TY - JOUR T1 - Estimating aquifer properties in the San Joaquin Basin, California, through the analysis of InSAR data AN - 1849310872; 2016-109426 AB - Increased groundwater withdrawal in the San Joaquin Valley, California, due to recent droughts has over-stressed many parts of the aquifer system, resulting in widespread aquifer compaction and land subsidence. Using Interferometric Synthetic Aperture Radar, or InSAR, we measure the magnitude of land subsidence to be as much as 20 cm/year for the period from 2007-2011. By comparing the observed subsidence with current and historic groundwater levels, we estimate that 90% of the observed subsidence is inelastic, or not recoverable. Due to delayed drainage in thick aquitards, we find that the majority (>95%) of compaction is caused by thin clay lenses within the upper and lower aquifers, which agrees with previous studies in the area. We use representative skeletal storage coefficients from previous studies in conjunction with observed subsidence and groundwater levels in a 1-dimensional vertical diffusion model to estimate the effective vertical hydraulic conductivity of the aquifer, and determine it is on the order of 1X10 (super -6) cm/second. JF - American Geophysical Union Fall Meeting AU - Smith, Ryan Glen AU - Knight, Rosemary J AU - Zebker, Howard A AU - Farr, Tom G AU - Liu, Zhen AU - Chen, Jingyi AU - Crews, J AU - Reeves, Jessica Anne AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract H53G EP - 1757 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849310872?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Estimating+aquifer+properties+in+the+San+Joaquin+Basin%2C+California%2C+through+the+analysis+of+InSAR+data&rft.au=Smith%2C+Ryan+Glen%3BKnight%2C+Rosemary+J%3BZebker%2C+Howard+A%3BFarr%2C+Tom+G%3BLiu%2C+Zhen%3BChen%2C+Jingyi%3BCrews%2C+J%3BReeves%2C+Jessica+Anne%3BAnonymous&rft.aulast=Smith&rft.aufirst=Ryan&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Geomorphic evolution of Sputnik Planum and surrounding terrain AN - 1849310595; 2016-109590 AB - The informally-named Sputnik Planum is a vast expanse (about 835 km east-west and 1500 km north-south) of N (sub 2) , CH (sub 4) , and CO ices which appears craterless at current resolutions, but which gives evidence of both glacial and convective flow in the ices (Stern and the New Horizons Team, Science, 2015). This ice field is surrounded by uplands of varying morphology from hilly terrain to the northeast, plains of apparent ices interspersed with rough terrain to the east, and textured ice surrounding the mountainous terrain to the southwest. The morphology and composition of this bordering terrain will provide clues to the long-term evolution of Sputnik Planum as higher resolution visual and spectral imaging of this region are returned from the New Horizons spacecraft over the next few months. Interactions between Sputnik Planum and surrounding terrain may have involved glacial erosion and deposition. The geomorphic evolution of this region will be discussed in the context of newly-returned encounter data. JF - American Geophysical Union Fall Meeting AU - Howard, Alan D AU - Moore, Jeffrey M AU - White, Oliver L AU - Umurhan, Orkan M AU - Schenk, Paul M AU - Beyer, Ross A AU - McKinnon, William B AU - Singer, Kelsi N AU - Spencer, John R AU - Stern, Alan AU - Weaver, Harold A, Jr AU - Young, Leslie A AU - Ennico Smith, Kimberly AU - Olkin, Catherine AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P41E EP - 05 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849310595?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Geomorphic+evolution+of+Sputnik+Planum+and+surrounding+terrain&rft.au=Howard%2C+Alan+D%3BMoore%2C+Jeffrey+M%3BWhite%2C+Oliver+L%3BUmurhan%2C+Orkan+M%3BSchenk%2C+Paul+M%3BBeyer%2C+Ross+A%3BMcKinnon%2C+William+B%3BSinger%2C+Kelsi+N%3BSpencer%2C+John+R%3BStern%2C+Alan%3BWeaver%2C+Harold+A%2C+Jr%3BYoung%2C+Leslie+A%3BEnnico+Smith%2C+Kimberly%3BOlkin%2C+Catherine%3BAnonymous&rft.aulast=Howard&rft.aufirst=Alan&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Charon as seen by New Horizons in the infrared AN - 1849310472; 2016-109587 AB - Charon, the largest satellite of Pluto, is a gray-colored icy world covered mostly in H (sub 2) O ice, with spectral evidence for NH (sub 3) , as previously reported (Cook et al. 2007, Astrophys. J. 663, 1406-1419; Merlin, et al. 2010, Icarus, 210, 930; Cook, et al. 2014, AAS/Division for Planetary Sciences Meeting Abstracts, 46, #401.04). Images from the New Horizons spacecraft reveal a surface with terrains of widely different ages and a moderate degree of localized coloration. New Horizons observed Charon at high spatial resolution (better than 10 km/px) with the LEISA imaging spectrometer. LEISA is part of the Ralph instrument (Reuter, D. C., Stern, S. A., Scherrer, J., et al. 2008, Space Science Reviews, 140, 129) and affords a spectral resolving power of 240 in the wavelength range 1.25-2.5 mu m, and 560 in the range 2.1-2.25 mu m. We present results obtained from the analysis of high spatial resolution data obtained close to flyby. JF - American Geophysical Union Fall Meeting AU - Dalle Ore, Cristina AU - Cruikshank, Dale P AU - Stern, Alan AU - Young, Leslie A AU - Ennico Smith, Kimberly AU - Grundy, William M AU - Olkin, Catherine AU - Weaver, Harold A, Jr AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P41E EP - 02 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849310472?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Charon+as+seen+by+New+Horizons+in+the+infrared&rft.au=Dalle+Ore%2C+Cristina%3BCruikshank%2C+Dale+P%3BStern%2C+Alan%3BYoung%2C+Leslie+A%3BEnnico+Smith%2C+Kimberly%3BGrundy%2C+William+M%3BOlkin%2C+Catherine%3BWeaver%2C+Harold+A%2C+Jr%3BAnonymous&rft.aulast=Dalle+Ore&rft.aufirst=Cristina&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Processes modifying cratered terrains on Pluto AN - 1849310450; 2016-109589 AB - The July encounter with Pluto by the New Horizons spacecraft permitted imaging of its cratered terrains with scales as high as approximately 100 m/pixel, and in stereo. In the initial download of images, acquired at 2.2 km/pixel, widely distributed impact craters up to 260 km diameter are seen in the near-encounter hemisphere. Many of the craters appear to be significantly degraded or infilled. Some craters appear partially destroyed, perhaps by erosion such as associated with the retreat of scarps. Bright ice-rich deposits highlight some crater rims and/or floors. While the cratered terrains identified in the initial downloaded images are generally seen on high-to-intermediate albedo surfaces, the dark equatorial terrain informally known as Cthulhu Regio is also densely cratered. We will explore the range of possible processes that might have operated (or still be operating) to modify the landscape from that of an ancient pristinely cratered state to the present terrains revealed in New Horizons images. The sequence, intensity, and type of processes that have modified ancient landscapes are, among other things, the record of climate and volatile evolution throughout much of the Pluto's existence. The deciphering of this record will be discussed. JF - American Geophysical Union Fall Meeting AU - Moore, Jeffrey M AU - Howard, Alan D AU - White, Oliver L AU - Umurhan, Orkan M AU - Schenk, Paul M AU - Beyer, Ross A AU - McKinnon, William B AU - Singer, Kelsi N AU - Spencer, John R AU - Stern, Alan AU - Weaver, Harold A, Jr AU - Young, Leslie A AU - Ennico Smith, Kimberly AU - Olkin, Catherine AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P41E EP - 04 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849310450?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Processes+modifying+cratered+terrains+on+Pluto&rft.au=Moore%2C+Jeffrey+M%3BHoward%2C+Alan+D%3BWhite%2C+Oliver+L%3BUmurhan%2C+Orkan+M%3BSchenk%2C+Paul+M%3BBeyer%2C+Ross+A%3BMcKinnon%2C+William+B%3BSinger%2C+Kelsi+N%3BSpencer%2C+John+R%3BStern%2C+Alan%3BWeaver%2C+Harold+A%2C+Jr%3BYoung%2C+Leslie+A%3BEnnico+Smith%2C+Kimberly%3BOlkin%2C+Catherine%3BAnonymous&rft.aulast=Moore&rft.aufirst=Jeffrey&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Geomorphological mapping of Sputnik Planum and surrounding terrain on Pluto AN - 1849310301; 2016-109591 AB - The New Horizons flyby of Pluto in July 2015 has provided the first few close-up images of the Kuiper belt object, which reveal it to have a highly diverse range of terrains, implying a complex geological history. The highest resolution images that have yet been returned are seven lossy 400 m/pixel frames that cover the majority of the prominent Plutonian feature informally named Sputnik Planum (all feature names are currently informal), and its surroundings. This resolution is sufficient to allow detailed geomorphological mapping of this area to commence. Lossless versions of all 15 frames that make up the mosaic will be returned in September 2015, and the map presented at AGU will incorporate the total area covered by these frames. Sputnik Planum, with an area of approximately 650,000 km (super 2) , is notable for its smooth appearance and apparent total lack of impact craters at 400 m/pixel resolution. The Planum actually displays a wide variety of textures across its expanse, which includes smooth and pitted plains to the south, polygonal terrain at its center (the polygons can reach tens of kilometers in size and are bounded by troughs that sometimes feature central ridges), and, to the north, darker polygonal terrain displaying patterns indicative of glacial flow. Within these plains there exist several well-defined outcrops of a mottled, light/dark unit that reach from several to tens of kilometers across. Separating Sputnik Planum from the dark, cratered equatorial terrain of Cthulhu Regio on its southwestern margin is a unit of chaotically arranged mountains; similar mountainous units exist on the south and western margins. The northern margin is bounded by rugged, hilly, cratered terrain into which ice of Sputnik Planum appears to be intruding in places. Terrain of similar relief exists to the east, but is much brighter than that to the north. The southernmost extent of the mosaic features a unit of rough, undulating terrain that displays very few impact craters at 400 m/pixel resolution. JF - American Geophysical Union Fall Meeting AU - White, Oliver L AU - Stern, S Alan AU - Weaver, Harold A, Jr AU - Olkin, Catherine AU - Ennico Smith, Kimberly AU - Young, Leslie A AU - Moore, Jeffrey M AU - Cheng, Andrew F AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P41E EP - 06 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849310301?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Geomorphological+mapping+of+Sputnik+Planum+and+surrounding+terrain+on+Pluto&rft.au=White%2C+Oliver+L%3BStern%2C+S+Alan%3BWeaver%2C+Harold+A%2C+Jr%3BOlkin%2C+Catherine%3BEnnico+Smith%2C+Kimberly%3BYoung%2C+Leslie+A%3BMoore%2C+Jeffrey+M%3BCheng%2C+Andrew+F%3BAnonymous&rft.aulast=White&rft.aufirst=Oliver&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - A first look at the geology of Charon AN - 1849310217; 2016-109586 AB - New Horizons imaged all of Pluto's moon Charon northward of approximately 30 degrees south at scales between 40 and 0.15 km/pixel, revealing a world of surprising geological complexity. Impact craters are common, but have densities well below saturation levels over much of the surface, indicating an extended history of resurfacing. Charon's surface is cut by several sets of fractures, hundreds of kilometers long and up to several kilometers deep, and large regions have been resurfaced by plains material, which is cut by rille-like depressions and forms moats around several isolated mountains. Dark terrain centered on the north pole may be dominantly of exogenic origin but also shows evidence for control by underlying topography. Elsewhere, complex albedo patterns, often associated with impact craters, may offer clues about subsurface structure and composition. The implications of these features for the geological history of Charon will be discussed. JF - American Geophysical Union Fall Meeting AU - Spencer, John R AU - Moore, Jeffrey M AU - McKinnon, William B AU - Stern, Alan AU - Weaver, Harold A, Jr AU - Young, Leslie A AU - Olkin, Catherine AU - Ennico Smith, Kimberly AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P41E EP - 01 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849310217?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=A+first+look+at+the+geology+of+Charon&rft.au=Spencer%2C+John+R%3BMoore%2C+Jeffrey+M%3BMcKinnon%2C+William+B%3BStern%2C+Alan%3BWeaver%2C+Harold+A%2C+Jr%3BYoung%2C+Leslie+A%3BOlkin%2C+Catherine%3BEnnico+Smith%2C+Kimberly%3BAnonymous&rft.aulast=Spencer&rft.aufirst=John&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - New insights into the structure, origin, and evolution of Pluto and Charon AN - 1849308901; 2016-109594 AB - The July 2015 New Horizons flyby has removed a long-standing obstacle to understanding the cosmogony of the Pluto-Charon system: the uncertain radius of Pluto. Combined with precise astrometric fits to the barycenter of the Pluto-Charon binary from HST observations of the more distant, small satellites (M. Brozovic et al., Icarus 246, 317-329, 2015), the densities of both Pluto and Charon are now known. At the 10% level, the densities of Pluto and Charon are rather similar, as opposed to the more divergent density estimates of years past in which Charon was thought to be substantially icier. In the context of a giant impact origin for binaries, a rock-poor Charon corresponds to an iron-poor Moon in the terrestrial case, with differentiated precursors being implied in both cases. A rock-rich Charon, however, implies that the precursor impacting bodies were at most only partially differentiated - possessing relatively thin ice shells (R. M. Canup, Astron. J. 141, 35, 2011). This suggests some combination of relatively slow and/or late accretion in the ancestral Kuiper Belt. A more rock-rich Charon also implies a more vigorous geological history, all other things being equal. For Pluto, the evolution to the surface of a substantial mass of supervolatile ices increases the likelihood that internal volatiles such as ammonia and methanol have been sequestered in an internal, aqueous layer (or ocean). JF - American Geophysical Union Fall Meeting AU - McKinnon, William B AU - Stern, Alan AU - Weaver, Harold A, Jr AU - Spencer, John R AU - Nimmo, Francis AU - Lisse, Carey M AU - Umurhan, Orkan M AU - Moore, Jeffrey M AU - Buie, Marc W AU - Porter, Simon AU - Olkin, Catherine AU - Young, Leslie A AU - Ennico Smith, Kimberly AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P41E EP - 09 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849308901?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=New+insights+into+the+structure%2C+origin%2C+and+evolution+of+Pluto+and+Charon&rft.au=McKinnon%2C+William+B%3BStern%2C+Alan%3BWeaver%2C+Harold+A%2C+Jr%3BSpencer%2C+John+R%3BNimmo%2C+Francis%3BLisse%2C+Carey+M%3BUmurhan%2C+Orkan+M%3BMoore%2C+Jeffrey+M%3BBuie%2C+Marc+W%3BPorter%2C+Simon%3BOlkin%2C+Catherine%3BYoung%2C+Leslie+A%3BEnnico+Smith%2C+Kimberly%3BAnonymous&rft.aulast=McKinnon&rft.aufirst=William&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Craters on Pluto and Charon; the influence of low gravities, low impact speeds, and unique ices AN - 1849307185; 2016-109592 AB - The surfaces of Pluto and Charon display a wide variety of crater landforms. Pluto and Charon present a unique regime to investigate cratering physics due to a combination of circumstances: 1) their relatively low gravities--Pluto's gravity ( approximately 0.66 m s-2) falls between those of the large icy satellites of Jupiter and their mid-sized saturnian cousins, while Charon's gravity (0.28 m s (super -2) ) is more similar to the latter, 2) the low primary impact velocities onto Pluto and Charon's surfaces (average approximately 2 km s (super -1) ), and 3) the mix of surface ices likely present (e.g., N (sub 2) , CO, CH (sub 4) , H (sub 2) O). We use available images from both the Long Range Reconnaissance Imager (LORRI; Cheng et al., 2008, SSR 140, 189-215) and data from the Ralph (Reuter et al., 2008, SSR 140, 129-154) color/composition instruments to characterize crater morphologies and ejecta characteristics. This presentation will focus on understanding formation of craters on Pluto and Charon (with reference to deformation/degradation processes described in other presentations) and will include comparison to icy satellites. We will also discuss what inferences can be drawn about impactor characteristics. JF - American Geophysical Union Fall Meeting AU - Singer, Kelsi N AU - Schenk, Paul M AU - McKinnon, William B AU - Robbins, Stuart J AU - Moore, Jeffrey M AU - Bray, Veronica J AU - Spencer, John R AU - Stern, S Alan AU - Grundy, William M AU - Beyer, Ross A AU - Howett, Carley AU - Dalle Ore, Cristina AU - White, Oliver L AU - Parker, Alex H AU - Porter, Simon AU - Zangari, Amanda M AU - Young, Leslie A AU - Olkin, Catherine AU - Ennico Smith, Kimberly AU - Weaver, Harold A, Jr AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P41E EP - 07 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849307185?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Craters+on+Pluto+and+Charon%3B+the+influence+of+low+gravities%2C+low+impact+speeds%2C+and+unique+ices&rft.au=Singer%2C+Kelsi+N%3BSchenk%2C+Paul+M%3BMcKinnon%2C+William+B%3BRobbins%2C+Stuart+J%3BMoore%2C+Jeffrey+M%3BBray%2C+Veronica+J%3BSpencer%2C+John+R%3BStern%2C+S+Alan%3BGrundy%2C+William+M%3BBeyer%2C+Ross+A%3BHowett%2C+Carley%3BDalle+Ore%2C+Cristina%3BWhite%2C+Oliver+L%3BParker%2C+Alex+H%3BPorter%2C+Simon%3BZangari%2C+Amanda+M%3BYoung%2C+Leslie+A%3BOlkin%2C+Catherine%3BEnnico+Smith%2C+Kimberly%3BWeaver%2C+Harold+A%2C+Jr%3BAnonymous&rft.aulast=Singer&rft.aufirst=Kelsi&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Chemical composition of lower Mount Sharp at Gale Crater, Mars, as measured by the APXS AN - 1849306935; 2016-109636 AB - From sol 810 through to 950 the MSL Curiosity Rover carried out detailed investigations at Pahrump, which likely represents the lowest strata of Mount Sharp. The bulk chemistry is very different compared to previously encountered formations like Sheepbed at Yellowknife Bay, which resembled an average Mars composition. The bedrock is significantly depleted in Mg and Ca, elevated in Al and Si and enriched in Zn ( approximately 2000 ppm), Se ( approximately 50 ppm) and Pb( approximately 100 ppm). The composition varies only slightly over the approximately 10 meter elevation explored at Pahrump and is chemically homogenous on a 10 cm scale. However, some clear trends uphill are present. Zn and Se decrease with elevation, the Fe/Mn ratio, a possible indicator for the Fe3+ content, increases from 50 to 100. Elevated 2.5% P (sub 2) O (sub 5) were encountered at higher elevations. SO3 ranges from 5 to 8% in the drill samples, higher abundances were found in Ca-sulfate veins and diagenetic features that contain approximately 15% (Mg,Ni)-sulfates. The Pahrump bedrock may be traced approximately 500m to the north and south. Bonanza King (sol 755, Hidden Valley) and Spokane (sol 989) share the same major chemistry, including similar trends in minor and trace elements. Most recently the rover approached a contact between Pahrump-like bedrock and an overlying, more resistant unit identified from orbit at Marias Pass. High SiO (sub 2) , ranging from 63 to 72%, was found close to the contact, above which the sandstone composition changes abruptly to that of average Mars. Increased Si is correlated with elevated P and Ti, lower Al and Fe, and a dramatic decrease in Zn, Ni and Cr to very low values of a few 100 ppm and less. The elevated silica and associated elemental trends observed at Marias Pass share characteristics with the high silica bedrock examined at HomePlate in Gusev Crater, where acidic leaching or silica mobilization has been proposed. The stratigraphy together with data from 4 drill samples for SAM and Chemin might shed light on the formation history of this extensive facies at the base of Mount Sharp. JF - American Geophysical Union Fall Meeting AU - Gellert, Ralf AU - Boyd, Nick AU - Campbell, John L AU - VanBommel, Scott AU - Perrett, Glynis M AU - Desouza, Elstan AU - Thompson, Lucy M AU - Yen, Albert S AU - Berger, Jeff A AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P43B EP - 2120 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849306935?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Chemical+composition+of+lower+Mount+Sharp+at+Gale+Crater%2C+Mars%2C+as+measured+by+the+APXS&rft.au=Gellert%2C+Ralf%3BBoyd%2C+Nick%3BCampbell%2C+John+L%3BVanBommel%2C+Scott%3BPerrett%2C+Glynis+M%3BDesouza%2C+Elstan%3BThompson%2C+Lucy+M%3BYen%2C+Albert+S%3BBerger%2C+Jeff+A%3BAnonymous&rft.aulast=Gellert&rft.aufirst=Ralf&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Paleo-environmental conditions revealed by fossil and geochemical features at Pampa-Lirima, a high-altitude geothermal system in the Andes AN - 1849306783; 2016-110003 AB - Sinter deposits that form in up-flow areas of high-temperature geothermal systems provide useful information about local and regional paleo-environmental conditions. We analyzed sinter from the Pampa Lirima geothermal field, a high-altitude (4,000 m) Andean site nearly equal 190 km east of Iquique in Northern Chile, 20 km from the Bolivian border. There, siliceous sinter is forming in several active thermal pools distributed in a broad, flat plain of sinter and sand debris. Water temperatures ranged from 38-80 degrees C and pH was near neutral (6.0-7.4), when we sampled in November 2014. We focused on the largest pool, one with an artificial trench extending from its SE corner, through which effluent flowed; this trench cut through 1.25m of sinter horizon, allowing us to sample older sinter material along with deposits actively forming in the pool. We used EMP and SEM data to characterize 16 sinter samples. The sinter deposit is comprised of massive sinter layers interbedded with layers rich in fragmented sinter debris cemented by opal-A. The material is dominantly opal-A with a few percent accessory minerals. Accessory phases consist of sulfates - gypsum, sodium- and sodium-calcium sulfates, in decreasing order of occurrence. Fossil frustules and plant remnants replaced by opal-A spheres are abundant; they are comprised of diatom casts (15-80% of the rock), and 10-300 mu m diameter filamentous features. In the trench, the fragmental layers are concentrated at the base of the exposed stratigraphy; these layers also show a higher abundance of sodium-sulfates, whereas the uppermost portion of the column presents calcium-sulfates - gypsum - and a lower frequency of fragmental layers. The mineralogy of the deposit is a record of changes in the geochemistry of the thermal pool and/or local environmental conditions over time, with periods of higher sodium and calcium content or higher evaporation rates. The fragmental nature of some sinter layers and the preserved plant remains suggest that hydrodynamic conditions have also changed throughout the deposition of the sinter layers. Based on these constraints, we can interpret a transition from a lacustrine environment synchronous with the geothermal activity towards a geothermal-dominated environment in the Pampa-Lirima area in the Late Holocene. JF - American Geophysical Union Fall Meeting AU - Nicolau, Constanza AU - Blank, J G AU - Clavero, J E AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract V13C EP - 3153 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849306783?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Paleo-environmental+conditions+revealed+by+fossil+and+geochemical+features+at+Pampa-Lirima%2C+a+high-altitude+geothermal+system+in+the+Andes&rft.au=Nicolau%2C+Constanza%3BBlank%2C+J+G%3BClavero%2C+J+E%3BAnonymous&rft.aulast=Nicolau&rft.aufirst=Constanza&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Sedimentary facies as indicators of changing lake levels in Gale Crater, Mars AN - 1849306781; 2016-109632 AB - The rover, Curiosity, has observed a variety of sediment deposits that record changing lake levels in Gale crater: (1) conglomerates and sandstones deposited by rivers flowing south from the crater rim toward Mt. Sharp; (2) sandstone and conglomerate beds inclined southward toward Mt. Sharp, interpreted as clinoforms deposited at shallow depths by small deltas advancing into a lake; the small scale of the clinoforms suggest that the lake was shallow and/or lake level fluctuated too quickly for clinoforms to advance into deep water; (3) relatively thin sandstone beds that contain sets of cross-beds that reverse in dip between north and south and that truncate and are draped over eroded clinoform foreset beds; these beds are interpreted to have been deposited by small eolian dunes when lake levels were low; (4) centimeter-scale flat-lying cyclic strata that are interpreted as annual depositional cycles (varves) in relatively still water; (5) and a variety of facies that formed along a widespread erosional surface. Even without considering all the stratigraphic complexities, distribution of these various deposits indicates changes in lake level. Eolian deposits truncating clinoforms record falling lake levels, and lake deposits that occur at higher elevation than fluvial or eolian deposits record rising lake levels. JF - American Geophysical Union Fall Meeting AU - Rubin, David M AU - Grotzinger, John P AU - Gupta, Sanjeev AU - Sumner, Dawn Y AU - Williams, Rebecca M E AU - Dietrich, William E AU - Edgar, Lauren A AU - Lewis, Kevin W AU - Oehler, Dorothy Z AU - Rice, Melissa S AU - Schieber, Juergen AU - Stack, Kathryn AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P43B EP - 2116 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849306781?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Sedimentary+facies+as+indicators+of+changing+lake+levels+in+Gale+Crater%2C+Mars&rft.au=Rubin%2C+David+M%3BGrotzinger%2C+John+P%3BGupta%2C+Sanjeev%3BSumner%2C+Dawn+Y%3BWilliams%2C+Rebecca+M+E%3BDietrich%2C+William+E%3BEdgar%2C+Lauren+A%3BLewis%2C+Kevin+W%3BOehler%2C+Dorothy+Z%3BRice%2C+Melissa+S%3BSchieber%2C+Juergen%3BStack%2C+Kathryn%3BAnonymous&rft.aulast=Rubin&rft.aufirst=David&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Chemical composition of diagenetic features at lower Aeolis Mons, Mars as measured by curiosity's APXS AN - 1849306776; 2016-109637 AB - Curiosity's APXS investigation of the Murray Fm. (sols 755-950) at lower Aeolis Mons (Mt. Sharp) in Gale Crater, Mars has revealed (Mg, Ni)-sulfate diagenetic features and dark gray Ca-rich veins. The (Mg, Ni)-sulfate features occur as approximately 2 cm wide dendritic and botryoidal concretions that stand out in relief approximately 1 cm above the mudstone surface. APXS rasters over the features (Moenkopi, Mammoth, Morrison, Rosamond, Potatoe; sols 758-810) resulted in 1:1 molar variation of S and Mg consistent with a MgSO (sub 4) phase. The sulfate is not pure; the features are a mixture of 10-15% MgSO (sub 4) with the host mudstone. This mixture suggests the sulfates precipitated within pre-existing pore spaces, or were partially dissolved and replaced by sediment, preserving the crystal morphology. The sulfate features are enriched in Ni (2000 - 4250 ppm), indicating Ni-sulfate. The Murray Fm. mudstones that host the diagenetic features range to high SiO (sub 2) (60-73 wt%) and have bulk elemental signatures that are consistent with alteration by acid leaching. Low MgO (3.0 wt%) and low Ni (100-300 ppm) in the most apparently altered (highest SiO (sub 2) ) mudstones may link the acidic alteration with the fluids that formed the (Mg, Ni)-sulfates. Diagenetic Ca-sulfate-bearing veins that were abundant across Aeolis Palus persist at lower Aeolis Mons. A new vein type containing dark gray material as a separate crystalline phase within white Ca-sulfate veins was discovered in a cluster of veins in the Murray Fm. (Coalville, Alvord Mt., Amboy; sols 930-948). APXS rasters of the dark-toned material indicate high CaO (20-30 wt%) without concomitant increases in SO (sub 3) . Ge (up to 650 ppm; 6.5X surrounding bedrock) and MnO (up to 1.0 wt%; 4X surrounding bedrock) are both enriched in the dark veins. These chemical observations are consistent with fluorite, although F (L.O.D. >5%) is not detectable in APXS spectra. The diagenetic features indicate that Ca, Mg, and Ni were mobilized with S in aqueous fluids, and that F may have played a role in the acidic alteration of the Murray Fm. JF - American Geophysical Union Fall Meeting AU - Berger, Jeff A AU - Schmidt, Mariek E AU - Gellert, Ralf AU - Boyd, Nick AU - Campbell, John L AU - Desouza, Elstan AU - Fisk, Martin R AU - Perrett, Glynis M AU - Thompson, Lucy M AU - VanBommel, Scott AU - Yen, Albert S AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P43B EP - 2121 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849306776?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Chemical+composition+of+diagenetic+features+at+lower+Aeolis+Mons%2C+Mars+as+measured+by+curiosity%27s+APXS&rft.au=Berger%2C+Jeff+A%3BSchmidt%2C+Mariek+E%3BGellert%2C+Ralf%3BBoyd%2C+Nick%3BCampbell%2C+John+L%3BDesouza%2C+Elstan%3BFisk%2C+Martin+R%3BPerrett%2C+Glynis+M%3BThompson%2C+Lucy+M%3BVanBommel%2C+Scott%3BYen%2C+Albert+S%3BAnonymous&rft.aulast=Berger&rft.aufirst=Jeff&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - The geology of Ceres; an overview AN - 1849306674; 2016-109605 AB - Ceres exhibits geological features indicating significant resurfacing due to impact cratering, tectonic stress, relaxation, mass displacement, upwelling, doming and possible cryo-volcanic and/or cryo-glacial processes. Ceres' surface is characterized by a smooth and rugged topography ranging from about -7.5km to 7.5km relative to a best-fit ellipsoidal shape with 482 X 482 X 446km. Ceres' topography has a much greater range in elevation relative to its ellipsoidal dimensions (3.2%) than the Moon and Mars (1% and 0.9%) or Earth (0.3%) but is lower compared to Vesta (15%). Its topography is comparable to the icy satellite Iapetus (3.6%) but significantly higher than that of other icy satellites (<1.8%). The topography of Ceres indicates a rigid crust manifesting a range of processes at large and small scales in the course of its geological evolution. Impact craters of all sizes, central peaks and rings, and a variety of ejecta blankets, as well as lineaments, apparent depression infills and distinctive bright spots characterize Ceres' surface. Impact craters range from pristine to highly degraded, comparable to that of various icy satellites, the Moon and Vesta, indicating an intensive cratering history over the age of the solar system as indicated by surface units with different crater densities. Some craters show upwelling dome-like structures on the floor. Bright spots with higher albedo than the surrounding terrain occur at different locations correlated with impact structures and tectonic crustal stress. These spots indicate material differences and possible time-variable effects related to cryo-processes either volcanic and/or glacial. Trough-like features and polygonal impact crater rims indicate crustal stress that compensates by tectonic processes. According to the relatively high topography to radius ratio, steep slopes, mass wasting, and flow processes are expected and observed. We thank the Dawn Science and Operations Team for their support. JF - American Geophysical Union Fall Meeting AU - Jaumann, Ralf AU - Russell, Christopher T AU - Raymond, Carol A AU - McSween, Harry Y, Jr AU - Williams, David A AU - Buczkowski, Debra AU - Hiesinger, Harald AU - De Sanctis, Maria C AU - Nathues, Andreas AU - Preusker, Frank AU - Roatsch, Thomas AU - Ammannito, Eleonora AU - Otto, Katharina AU - Krohn, Katrin AU - Stephan, Katrin AU - Matz, Klaus-Dieter AU - Elgner, Stefan AU - Kersten, Elke AU - Wagner, Roland J AU - Schroeder, Stefan AU - Schulzeck, Franziska AU - von der Gathen, Isabel AU - Schmedemann, Nico AU - Kneissl, Thomas AU - Nessemann, Adrian AU - Scully, Jennifer E C AU - Mest, Scott C AU - Marchi, Simone AU - Schenk, Paul M AU - McCord, Thomas B AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P42A EP - 05 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849306674?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=The+geology+of+Ceres%3B+an+overview&rft.au=Jaumann%2C+Ralf%3BRussell%2C+Christopher+T%3BRaymond%2C+Carol+A%3BMcSween%2C+Harry+Y%2C+Jr%3BWilliams%2C+David+A%3BBuczkowski%2C+Debra%3BHiesinger%2C+Harald%3BDe+Sanctis%2C+Maria+C%3BNathues%2C+Andreas%3BPreusker%2C+Frank%3BRoatsch%2C+Thomas%3BAmmannito%2C+Eleonora%3BOtto%2C+Katharina%3BKrohn%2C+Katrin%3BStephan%2C+Katrin%3BMatz%2C+Klaus-Dieter%3BElgner%2C+Stefan%3BKersten%2C+Elke%3BWagner%2C+Roland+J%3BSchroeder%2C+Stefan%3BSchulzeck%2C+Franziska%3Bvon+der+Gathen%2C+Isabel%3BSchmedemann%2C+Nico%3BKneissl%2C+Thomas%3BNessemann%2C+Adrian%3BScully%2C+Jennifer+E+C%3BMest%2C+Scott+C%3BMarchi%2C+Simone%3BSchenk%2C+Paul+M%3BMcCord%2C+Thomas+B%3BAnonymous&rft.aulast=Jaumann&rft.aufirst=Ralf&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Volcanic aerosols from satellites; current and emerging capabilities AN - 1849306654; 2016-109927 AB - There are 5 instruments currently operating in space with capability to measure stratospheric aerosols. Two of these are lidar backscatter instruments (CALIOP & ISS/CATS) that provide high vertical resolution, day/night coverage, and polarization information to separate ice clouds from sulfate aerosols. Two are limb scattering instruments (OSIRIS & OMPS-LP) with high sensitivity to aerosols and provide extensive spatial coverage of the sunlit globe. And a Canadian solar occultation instrument (ACE-MAESTRO) measures aerosol extinction twice per orbit. Next year we are expecting the launch of the SAGE III instrument on ISS with capability to measure aerosol extinction and Angstrom Exponent (AE) at multiple wavelengths by solar and lunar occultation techniques. It also has limb scattering capability to provide spatial coverage between solar occultations. The 51.6 degrees inclination of the ISS orbit will allow SAGE III to measure aerosol scattering across the gobe for a wide range of scattering angles. Therefore, ISS SAGE III has the capability to provide vertically resolved information about a wide variety of aerosol properties, potentially including aerosol extinction, size distribution, refractive index, and particle shape parameters, similar to the one provided by the ground-based almucantar technique. In our talk we will focus primarily on the synergy between the OMPS LP instrument that has been flying on the Suomi NPP satellite since October 2011 and ISS SAGE III. We will show how these measurements can be combined together to capture spatial and temporal evolution of aerosols and ozone in large volcanic plumes to validate models and to support field campaigns. JF - American Geophysical Union Fall Meeting AU - Bhartia, Pawan K AU - McCormick, Michael Patrick AU - Loughman, Robert P AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract U34A EP - 06 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849306654?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Volcanic+aerosols+from+satellites%3B+current+and+emerging+capabilities&rft.au=Bhartia%2C+Pawan+K%3BMcCormick%2C+Michael+Patrick%3BLoughman%2C+Robert+P%3BAnonymous&rft.aulast=Bhartia&rft.aufirst=Pawan&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Measurement of the depth of penetration of UV photons into Mars relevant rock samples to constrain habitability and limits of detection for the SHERLOC Mars 2020 instrument AN - 1849306631; 2016-109652 AB - We report on the depth of penetration of UV photons into a suite of Mars relevant materials in order to better characterize what constitutes a habitable environment on Mars, as well as to characterize the sensitivities of the Scanning Habitable Environments with Raman and Luminescence for Organics and Chemicals (SHERLOC) instrument on the Mars 2020 payload. To date, UV transparency of these rock types have not been fully characterized, and we have performed a systematic study to better constrain the UV attenuation over a wide range of materials relevant to Mars. At one point during the history of Mars, the surface may have been habitable, with flowing liquid water and access to food and energy sources. As surface conditions changed, it is not unreasonable to assume that life would have migrated into the protected interior of porous rocks, veins, fissures, and the subsurface as a means to protect itself from harsh surface conditions, such as the UV flux that we observe today. Given geological time, the depth that UV light penetrates into the subsurface will play a role in altering and/or effecting the preservation of organic molecule containing biosignatures. However, the extent to which various rock types can shield organic material currently is not well understood. In addition to constraining the UV-driven habitable "zone", the data also helps constrain the SHERLOC instrument limits of detection. SHERLOC is a deep UV fluorescence and Raman imaging instrument. This is achieved by spatially scanning a deep UV laser at 248.6 nm to stimulate fluorescence emissions and Raman scattering from the sample. Specifically, fluorescence is generated from electronic transition from aromatic organics and Raman scatter is generated from vibrational bonds from both organics and minerals. Given the excitation wavelength, and the emission/scattering wavelengths (250-350), the mineral transparency will affect the interrogation volume of analysis and thus constrain the limits of detection. We will report on the attenuation of both Raman and Fluorescence signals through natural rock samples selected based on relevance to Martian surface mineralogy. These samples have been prepared as thin sections of known thickness from 30-1000 mu m. Samples analyzed include various naturally occurring basalts, basaltic sandstones and evaporites. JF - American Geophysical Union Fall Meeting AU - Carrier, Brandi L AU - Beegle, Luther W AU - Bhartia, Rohit AU - Abbey, William J AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P43D EP - 2138 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849306631?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Measurement+of+the+depth+of+penetration+of+UV+photons+into+Mars+relevant+rock+samples+to+constrain+habitability+and+limits+of+detection+for+the+SHERLOC+Mars+2020+instrument&rft.au=Carrier%2C+Brandi+L%3BBeegle%2C+Luther+W%3BBhartia%2C+Rohit%3BAbbey%2C+William+J%3BAnonymous&rft.aulast=Carrier&rft.aufirst=Brandi&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Homogeneous spectral units on Ceres as inferred from Dawn/VIR AN - 1849305800; 2016-109606 AB - The dwarf planet Ceres, the largest object in the main asteroid belt, is being closely investigated by the NASA Dawn mission since the beginning of 2015. The Visible InfraRed (VIR) mapping spectrometer onboard Dawn has obtained hyperspectral images of Ceres, with spatial resolution increasing with decreasing distance from the surface. Using its overall spectral range from 0.25 to 5.1 mu m, VIR will ultimately enable a comprehensive mapping of Ceres' mineralogy and surface temperature. Prior to Dawn, Ceres was extensively observed with the Hubble Space Telescope (HST), which resulted in low-resolution (30 km/px) albedo and color maps in the UV-VIS spectral domain. During the approach phase VIR acquired data with a spatial resolution of approximately 11 km/px, and confirmed the regional color trends identified by HST earlier. In the subsequent Survey mission phase hyperspectral coverage of Ceres was obtained at approximately 1.3 km/px, while in the High Altitude Mapping Orbit (HAMO) the nominal spatial resolution will be approximately 0.4 km/px. Unlike Vesta, which was investigated by Dawn in 2011-2012, the spectrum of Ceres does not display prominent absorption bands in the VIS-near IR range. Ground-based observations of Ceres highlighted a decrease in reflectance shortward of 0.4 mu m and the existence of a broad absorption feature in the 3-mu m region, associated with hydrated minerals. VIR data are key to unveiling the surface composition of Ceres at different spatial scales, providing answers to several unsolved questions. Compositionally homogeneous surface units, emerging in the VIS-IR spectral range sampled by VIR, are presented here for the first time. These units and their degree of similarity in terms of spectral parameters might provide insight on the surface processes that led to the composition observed nowadays. JF - American Geophysical Union Fall Meeting AU - Zambon, Francesca AU - De Sanctis, Maria C AU - Ammannito, Eleonora AU - Tosi, Federico AU - Carrorro, Filippo G AU - Ciarniello, Mauro AU - Longobardo, Andrea AU - Fonte, Sergio AU - Giardino, Marco AU - Palomba, Ernesto AU - Frigeri, Alessandro AU - Raponi, Andrea AU - Capria, Maria T AU - Formisano, Michelangelo AU - Russell, Christopher T AU - Raymond, Carol A AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P42A EP - 06 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849305800?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Homogeneous+spectral+units+on+Ceres+as+inferred+from+Dawn%2FVIR&rft.au=Zambon%2C+Francesca%3BDe+Sanctis%2C+Maria+C%3BAmmannito%2C+Eleonora%3BTosi%2C+Federico%3BCarrorro%2C+Filippo+G%3BCiarniello%2C+Mauro%3BLongobardo%2C+Andrea%3BFonte%2C+Sergio%3BGiardino%2C+Marco%3BPalomba%2C+Ernesto%3BFrigeri%2C+Alessandro%3BRaponi%2C+Andrea%3BCapria%2C+Maria+T%3BFormisano%2C+Michelangelo%3BRussell%2C+Christopher+T%3BRaymond%2C+Carol+A%3BAnonymous&rft.aulast=Zambon&rft.aufirst=Francesca&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Potential persistence of ground ice at Gale crater, Mars constrained using Curiosity Rover REMS data AN - 1849305763; 2016-109628 AB - Shallow ground ice in the equatorial region on Mars would be quickly lost to sublimation under current Martian climate conditions; however, it may persist at depth since its suggested formation during the most recent high obliquity of 32 degrees approximately 500 ka ago when ice is believed to have been stable here. Ground-based measurements by Curiosity Rover's Environmental Monitoring Station (REMS) enable a detailed study of the processes that determine the rate of sublimation and the subsurface transport of heat and water vapor at Gale Crater. This study is prompted by an analogous investigation in the Dry Valleys of Antarctica where ground ice is currently unstable but has persisted approximately 0.5 m below the surface for over 1 Ma. A heat and vapor diffusion model is developed to understand the ground thermal regime and the persistence of potential ground ice in the equatorial region of Mars using the first year of data collected by Curiosity. Based on the derived thermal properties of dry regolith, including thermal inertia values ranging from 300 to 450 Jm (super -2) K (super -1) s (super -1/2) , diurnal and annual temperature variations propagate to depths of 0.05 m and 1.3 m, respectively. The modeled rate of water-vapor escape from the ground ice to the atmosphere corresponds to a sublimation rate of approximately 350 m Ma (super -1) for ice at the ground surface; however, the sublimation rates increasingly deceases with depth as overlying dry regolith thickens. We explore whether interstitial ground ice that formed at Gale Crater approximately 500 ka ago during the last high obliquity period could currently exist at shallow depths. While this study does not account for the effects of replenishing processes, adsorption, diffusion-advection, and climate change influenced by obliquity, it highlights the potential persistence of ground ice and implications for future missions on Mars. JF - American Geophysical Union Fall Meeting AU - Liu, Lu AU - Sletten, Ronald S AU - Hallet, Bernard AU - Mischna, Michael A AU - Vasavada, Ashwin R AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P43B EP - 2112 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849305763?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Potential+persistence+of+ground+ice+at+Gale+crater%2C+Mars+constrained+using+Curiosity+Rover+REMS+data&rft.au=Liu%2C+Lu%3BSletten%2C+Ronald+S%3BHallet%2C+Bernard%3BMischna%2C+Michael+A%3BVasavada%2C+Ashwin+R%3BAnonymous&rft.aulast=Liu&rft.aufirst=Lu&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Stable isotope systematics of Martian perchlorate AN - 1849305564; 2016-109646 AB - Chlorine isotopic compositions in HCl released during evolved gas analysis (EGA) runs have been detected by the Sample Analysis at Mars (SAM) instrument on the Curiosity rover ranging from approximately -9 ppm to -50 ppm delta (super 37) Cl, with two spatially and isotopically separated groups of samples averaging -15 ppm and -45 ppm. These extremely low values are the first such detection of any known natural material; common terrestrial values very rarely exceed + or -5 ppm, and the most extreme isotopic signature yet detected elsewhere in the solar system are values of around +24 ppm on the Moon. The only other known location in the solar system with large negative chlorine isotopes is the Atacama Desert, where perchlorate with -14 ppm delta (super 37) Cl has been detected. The Atacama perchlorate has unusual Delta (super 17) O signatures associated with it, indicating a formation mechanism involving O (sub 3) , which suggests an atmospheric origin of the perchlorate and associated large isotopic anomalies. Identification of non-zero positive Delta (super 17) O signatures in the O (sub 2) released during EGA runs would allow definitive evidence for a similar process having occurred on Mars. Perchlorate is thought to be the most likely source of HCl in EGA runs due to the simultaneous onset of O (sub 2) release. If perchlorate is indeed the HCl source, atmospheric chemistry could be responsible for the observed isotopic anomalies, with variable extents of perchlorate production producing the isotopic variability. However, chloride salts have also been observed to release HCl upon heating; if the timing of O (sub 2) release is merely coincidental, observed HCl could be coming from chlorides. At thermodynamic equilibrium, the fractionation factor of perchlorate reduction is 0.93, meaning that differing amounts of post-deposition reduction of isotopically normal perchlorate to chloride could account for the highly variable Cl isotopes. Additionally, post-deposition reduction could account for the difference between the two Cl isotopic groups if perchlorate is the HCl source, as the residual perchlorate after reduction will be isotopically heavy. Therefore, conclusive determination of the origin of HCl released during EGA is vital to understanding the origin of this large delta (super 37) Cl anomaly. JF - American Geophysical Union Fall Meeting AU - Martin, Peter AU - Farley, Kenneth A AU - Archer, Doug, Jr AU - Atreya, Sushil K AU - Conrad, Pamela G AU - Eigenbrode, Jennifer L AU - Fairen, Alberto G AU - Franz, Heather B AU - Freissinet, Caroline AU - Glavin, Daniel P AU - Mahaffy, Paul R AU - Malespin, Charles AU - Ming, Douglas W AU - Navarro-Gonzalez, Rafael AU - Sutter, Brad AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P43B EP - 2130 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849305564?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Stable+isotope+systematics+of+Martian+perchlorate&rft.au=Martin%2C+Peter%3BFarley%2C+Kenneth+A%3BArcher%2C+Doug%2C+Jr%3BAtreya%2C+Sushil+K%3BConrad%2C+Pamela+G%3BEigenbrode%2C+Jennifer+L%3BFairen%2C+Alberto+G%3BFranz%2C+Heather+B%3BFreissinet%2C+Caroline%3BGlavin%2C+Daniel+P%3BMahaffy%2C+Paul+R%3BMalespin%2C+Charles%3BMing%2C+Douglas+W%3BNavarro-Gonzalez%2C+Rafael%3BSutter%2C+Brad%3BAnonymous&rft.aulast=Martin&rft.aufirst=Peter&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - The Advanced Rapid Imaging and Analysis (ARIA) project's response to the April 25, 2015 M7.8 Nepal earthquake; rapid measurements and models for science and situational awareness AN - 1849305123; 2016-109916 AB - On April 25, 2015, the M7.8 Gorkha earthquake struck Nepal and the city of Kathmandu. The quake caused a significant humanitarian crisis and killed more than 8,000 due to widespread building damage and triggered landslides throughout the region. This was the strongest earthquake to occur in the region since the 1934 Nepal-Bihar magnitude 8.0 quake caused more than 10,000 fatalities. In the days following the earthquake, the JPL/Caltech ARIA project produced coseismic GPS and SAR displacements, fault slip models, and damage assessments from SAR coherence change that were helpful in both understanding the event and in the response efforts. The ARIA project produced InSAR observations from two new SAR missions - JAXA's ALOS-2 and ESA's Sentinel 1a. The GPS coseismic displacements showed approximately 1.8 meters of southward motion and approximately 1.3 meters of uplift in Kathmandu. InSAR images of the displacement field and fault models show that the rupture extended 135 km southeast of the epicenter. The SAR imagery also confirmed that the fault slip did not extend to the surface, though localized offsets formed due to liquefaction. The GPS and SAR analysis has continued to image the large M7.3 aftershock and postseismic deformation. The damage assessments from coherence change were used by several organizations guiding the response effort, including the NGA, the World Bank, and OFDA/USAID. We will present imaging, modeling, and damage assessment results from the recent April 25, 2015 M7.8 earthquake in Nepal, and its largest aftershock, a M7.3 event on May 12, 2015. We also discuss how these data were used for understanding the event, guiding the response, and for educational outreach. JF - American Geophysical Union Fall Meeting AU - Owen, Susan E AU - Fielding, Eric J AU - Yun, Sang-Ho AU - Yue, Han AU - Polet, Jascha AU - Riel, Bryan V AU - Liang, Cunren AU - Huang, Moon-Han AU - Webb, Frank AU - Simons, Mark AU - Moore, Angelyn W AU - Agram, Piyush S AU - Barnhart, William D AU - Hua, Hook AU - Liu, Zhen AU - Milillo, Pietro AU - Sacco, Gian Franco AU - Rosen, Paul Alan AU - Manipon, Gerald AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract U33A EP - 03 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849305123?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=The+Advanced+Rapid+Imaging+and+Analysis+%28ARIA%29+project%27s+response+to+the+April+25%2C+2015+M7.8+Nepal+earthquake%3B+rapid+measurements+and+models+for+science+and+situational+awareness&rft.au=Owen%2C+Susan+E%3BFielding%2C+Eric+J%3BYun%2C+Sang-Ho%3BYue%2C+Han%3BPolet%2C+Jascha%3BRiel%2C+Bryan+V%3BLiang%2C+Cunren%3BHuang%2C+Moon-Han%3BWebb%2C+Frank%3BSimons%2C+Mark%3BMoore%2C+Angelyn+W%3BAgram%2C+Piyush+S%3BBarnhart%2C+William+D%3BHua%2C+Hook%3BLiu%2C+Zhen%3BMilillo%2C+Pietro%3BSacco%2C+Gian+Franco%3BRosen%2C+Paul+Alan%3BManipon%2C+Gerald%3BAnonymous&rft.aulast=Owen&rft.aufirst=Susan&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Plume-induced subduction; from laboratory experiments to Venus large coronae AN - 1849305116; 2016-109617 AB - The development of new visualization techniques and the use of complex-rheology fluids open a new area for planetary geodynamic modelling, as observations of surface patterns (i.e. faults, folds, ridges, trenches) can be related to convective instabilities inside the laboratory mantle analog. The rheology of colloidal aqueous dispersions of silica nanoparticles depends strongly on the solid particle fraction, phi p, deforming in the Newtonian regime at low phi p, and transitioning to strain-rate weakening, plasticity, elasticity, and brittle properties as phi p increases. So, as the system is dried from above, a dense skin grows on the surface, akin to a planetary lithosphere. If it is also heated from below, hot plumes develop. When a hot plume impinges under the skin, it triggers a new mode of subduction: as the upwelling plume material breaks the lithosphere and flows above the denser skin, it forces it to sink. The subduction trenches are localized along the rim of the plumes and strong roll-back is observed. Subduction always occurs along partial circles, a situation very different from the purely viscous case. This is due to the brittle character of the upper part of the experimental lithosphere: it cannot deform viscously to accommodate roll-back and sinking motions. Instead, the plate tears, as a sheet of paper would do upon intrusion. The experiments further suggest that a weaker lithosphere than that present on Earth today is required for such a convective regime. These experimental observations strongly resemble the association of large coronae with trenches that is observed on Venus. The surface deformation structures and the subsurface density variations predicted by the laboratory agree with radar image observations and subsurface density variations inferred from modeling the gravity and topography data at Artemis and Quetzelpetlatl Coronae. Evidence for geologically recent volcanism at Quetzelpetlatl suggests that subduction may be currently active on Venus. JF - American Geophysical Union Fall Meeting AU - Davaille, Anne AU - Smrekar, Suzanne E AU - Tomlinson, Steve M AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P43A EP - 2100 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849305116?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Plume-induced+subduction%3B+from+laboratory+experiments+to+Venus+large+coronae&rft.au=Davaille%2C+Anne%3BSmrekar%2C+Suzanne+E%3BTomlinson%2C+Steve+M%3BAnonymous&rft.aulast=Davaille&rft.aufirst=Anne&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - An airborne mission to study background sulfur and prepare for a rapid response to a large volcanic eruption AN - 1849305087; 2016-109929 AB - We propose a focused airborne science mission to study the transport, chemistry and microphysics of sulfur in the upper troposphere and lower stratosphere (UTLS). This mission will: 1) provide measurements from which we can construct a species-resolved sulfur inventory over a geographic region including the mid-latitude lower stratosphere and tropical UTLS, and 2) investigate the transport and chemistry of sulfur species in order to assess the validity of global chemical transport model projections of anthropogenic sulfur transport from the lower troposphere into the UTLS. The proposed aircraft and its payload, when coupled with balloon SO (sub 2) and aerosol sondes as well as lidar measurements, will be a practical package for the initial study of a large volcanic eruption. JF - American Geophysical Union Fall Meeting AU - Gao, Ru-Shan AU - Rosenlof, Karen H AU - Thornberry, Troy D AU - Rollins, Andrew W AU - Toon, Brian AU - Murphy, Daniel M AU - Jensen, Eric J AU - Mills, Michael J AU - Neely, Ryan R, III AU - Fahey, David W AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract U34A EP - 08 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849305087?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=An+airborne+mission+to+study+background+sulfur+and+prepare+for+a+rapid+response+to+a+large+volcanic+eruption&rft.au=Gao%2C+Ru-Shan%3BRosenlof%2C+Karen+H%3BThornberry%2C+Troy+D%3BRollins%2C+Andrew+W%3BToon%2C+Brian%3BMurphy%2C+Daniel+M%3BJensen%2C+Eric+J%3BMills%2C+Michael+J%3BNeely%2C+Ryan+R%2C+III%3BFahey%2C+David+W%3BAnonymous&rft.aulast=Gao&rft.aufirst=Ru-Shan&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Airborne stratospheric observations of major volcanic eruptions; past and future AN - 1849304735; 2016-109928 AB - Major volcanic eruptions (e.g. the 1991 eruption of Mt. Pinatubo) lead to a surface cooling and disruptions of the chemistry of the stratosphere. In this presentation, we will show model simulations of Mt. Pinatubo that can be used to devise a strategy for answering specific science questions. In particular, what is the initial mass injection, how is the cloud spreading, how are the stratospheric aerosols evolving, what is the impact on stratospheric chemistry, and how will climate be affected? We will also review previous stratospheric airborne observations of volcanic clouds using NASA sub-orbital assets, and discuss our present capabilities to observe the evolution of a stratospheric volcanic plume. These capabilities include aircraft such as the NASA ER-2, WB-57f, and Global Hawk. In addition, the NASA DC-8 and P-3 can be used to perform remote sensing. Balloon assets have also been employed, and new instrumentation is now available for volcanic work. JF - American Geophysical Union Fall Meeting AU - Newman, Paul A AU - Aquila, Valentina AU - Colarco, Peter Richard AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract U34A EP - 07 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849304735?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Airborne+stratospheric+observations+of+major+volcanic+eruptions%3B+past+and+future&rft.au=Newman%2C+Paul+A%3BAquila%2C+Valentina%3BColarco%2C+Peter+Richard%3BAnonymous&rft.aulast=Newman&rft.aufirst=Paul&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - A multiproxy reconstruction of Holocene southern westerlies from the Auckland Islands AN - 1849304728; 2016-109766 AB - The strength and position of the Southern Hemisphere Westerly Wind belt plays an important role in our understanding of the global carbon cycle and glacial-interglacial climate change. We present a paleoclimate record that is primarily influenced by the strength and latitudinal position of the Southern Hemisphere Westerly Winds from a late Holocene lake sediment core and a peat core that spans the last 13,000 years, both obtained from New Zealand's subantarctic Auckland Islands (50 degrees S, 166 degrees E). Several proxy indicators contribute to our reconstruction. Hydrogen isotope ratios of specific organic molecules allow us to reconstruct the hydrogen isotope ratios of precipitation. Using macrofossil counts and the abundances of leaf wax biomarkers, we are able to estimate the moisture balance at our sites. Model simulations of the Westerlies and the rate and isotope ratios of precipitation allow us to interpret our proxy data as changes in the strength and position of the Westerly Winds. In our lacustrine sediment, we found that the Westerlies have been shifting southward since the Little Ice Age, consistent with modern observations of a southward shift. In the peatland sediment, we found a multi-millennial northward shift in the Westerlies during the middle Holocene. We will present further ongoing work that strengthens the chronology of Auckland Islands environmental change and integrates these results with vegetation shifts identified in pollen and macrofossil data. JF - American Geophysical Union Fall Meeting AU - Nichols, Jonathan E AU - Moy, Christopher M AU - Peteet, Dorothy M AU - Weiss, Anna AU - Curtin, Lorelei G AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract PP53D EP - 03 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849304728?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=A+multiproxy+reconstruction+of+Holocene+southern+westerlies+from+the+Auckland+Islands&rft.au=Nichols%2C+Jonathan+E%3BMoy%2C+Christopher+M%3BPeteet%2C+Dorothy+M%3BWeiss%2C+Anna%3BCurtin%2C+Lorelei+G%3BAnonymous&rft.aulast=Nichols&rft.aufirst=Jonathan&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Comparison of volcanic injection heights estimated from different methods for global climate models applications AN - 1849300254; 2016-106209 AB - Volcanic eruptions cause substantial climate and air quality hazards by injecting ash and gaseous material such as sulfur dioxide (SO (sub 2) ) into the atmosphere. This project identifies volcanic injection heights and SO (sub 2) emission amounts as constraints for global climate models such as GEOS-5/GOCART. By collecting and analyzing injection heights and their relationships with other factors, we aim to understand how much of an effect the eruptions have on climate, wind systems, energy budget and the water cycle. The study collected emission height of SO (sub 2) from major volcanic eruptions from 2002-2012 estimated with several different techniques, including the empirical relationships between the volcanic eruption magnitude and injection height, the retrieval of plume height from MISR stereo imaging, the spectral linear fitting using SO (sub 2) column amount from OMI, and the back trajectory analysis. From these comparisons and observations of volcanic plume transport patterns, we construct a database of "volcanic source function" that contains our optimal estimation of volcanic injection heights for major volcanoes together with the total SO (sub 2) amount from OMI. This database will be implemented into the GEOS-5 model to study the environmental effects of volcanic eruptions. JF - American Geophysical Union Fall Meeting AU - Chen, Heather AU - Chin, Mian AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract V51E EP - 3082 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849300254?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Comparison+of+volcanic+injection+heights+estimated+from+different+methods+for+global+climate+models+applications&rft.au=Chen%2C+Heather%3BChin%2C+Mian%3BAnonymous&rft.aulast=Chen&rft.aufirst=Heather&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Considering the complexities of U-Pb geochronology at the millennial scale AN - 1849300162; 2016-106348 AB - Recent advances in zircon U-Pb geochronology can yield radioisotopic (super 206) Pb/ (super 238) U dates with nominal precisions that approach the thousand year level for young samples, most often achieved by pooling several analyses. These advances are prompting a reevaluation of a number of aspects of the geology and the radioisotopic systematics of zircon that are only relevant at the scale of thousands of years, and must be addressed in order to extract a meaningful age that reflects a geological event. For example, in young volcanic rocks, individual crystals may take more than 1 ka to crystallize and growth events may take place over 10s or 100s of ka prior to an eruption. In order to best leverage this chronological information for stratigraphic purposes, e.g., where eruption is the key, we require tools to predict the timescales of zircon crystallization relative to eruption and to quantitatively extract this from measured dates. In this context it is also important to study the petrographic and petrologic relations of zircon contained in volcanic rocks. Recent studies suggest that, in some cases, the majority of zircon crystals are armored and thus cease to crystallize prior to an eruptive event. In addition to geological complexities, the systematics of short lived radionuclides with respect to initial disequilibrium and open system, including (super 230) Th, (super 226) Ra, (super 222) Rn and (super 234) U, are not fully understood, and may contribute to uncertainty in (super 206) Pb/ (super 238) U dates at timescales of 1 ka or greater. Potential additional effects from a subtle miscalibration of I (super 238) U have no bearing when (super 206) Pb/ (super 238) U ages are compared internally but must be considered for comparison with ages derived from other isotopic systems (most prominently (super 40) Ar/ (super 39) Ar). Efforts are currently underway to address some of these issues whereas others have been neglected. The combined effects of these limiting factors have yet to be fully understood, but must be quantified before analytical precision and accuracy of a reported weighted mean (super 206) Pb/ (super 238) U can be adequately translated to the age of a geological event such as a volcanic eruption. JF - American Geophysical Union Fall Meeting AU - Mundil, Roland AU - Ickert, Ryan Ben AU - Simon, Justin I AU - Renne, Paul R AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract V53H EP - 03 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 03:Geochronology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849300162?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Considering+the+complexities+of+U-Pb+geochronology+at+the+millennial+scale&rft.au=Mundil%2C+Roland%3BIckert%2C+Ryan+Ben%3BSimon%2C+Justin+I%3BRenne%2C+Paul+R%3BAnonymous&rft.aulast=Mundil&rft.aufirst=Roland&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Mantle water contents beneath the Rio Grande Rift (NM, USA); FTIR analysis of Rio Puerco and Kilbourne Hole peridotite xenoliths AN - 1849300045; 2016-106333 AB - Peridotite xenoliths from the Rio Grande Rift (RGR) are being analyzed for H (sub 2) O contents by FTIR as well as for major and trace element compositions. Nine samples are from the Rio Puerco Volcanic Field (RP) which overlaps the central RGR and southeastern Colorado Plateau; seventeen samples are from Kilbourne Hole (KH) in the southern RGR. Spinel Cr# (Cr/(Cr+Al) = 0.08-0.46) and olivine Mg# (Mg/(Mg+Fe) = 0.883-0.911) of samples fall within the olivine-spinel mantle array from an indicator that these are residues of partial melting. Pyroxene H (sub 2) O contents in KH correlate with bulk rock and pyroxene Al (sub 2) O (sub 3) contents. The KH clinopyroxene rare earth element (REE) variations fit models of 0-13% fractional melting of a primitive upper mantle. Most KH peridotites have bulk-rock light REE depleted patterns, but five are enriched in light REEs consistent with metasomatism. Variation in H (sub 2) O content seems unrelated to REE enrichment. Metasomatism is seen in RP pyroxenite xenoliths and will be examined in the peridotites studied here. Olivine H (sub 2) O contents are low (< or =20 ppm), and decrease from core to rim within grains. This is likely due to H loss during xenolith transport by the host magma. Diffusion models of H suggest that mantle H (sub 2) O contents are still preserved in cores of KH olivine, but not those of RP olivine. The average H (sub 2) O content of Colorado Plateau clinopyroxene (670 ppm) is approximately 300 ppm higher than RGR clinopyroxene (350 ppm). This upholds the hypothesis that hydration-induced lithospheric melting occurred during flat-slab subduction of the Farallon plate. Numerical models indicate hydration via slab fluids is possible beneath the plateau, approximately 600 km from the paleo-trench, but less likely approximately 850 km away beneath the rift. JF - American Geophysical Union Fall Meeting AU - Schaffer, Lillian Aurora AU - Peslier, Anne H AU - Brandon, Alan D AU - Selverstone, Jane AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract V53F EP - 3166 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849300045?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Mantle+water+contents+beneath+the+Rio+Grande+Rift+%28NM%2C+USA%29%3B+FTIR+analysis+of+Rio+Puerco+and+Kilbourne+Hole+peridotite+xenoliths&rft.au=Schaffer%2C+Lillian+Aurora%3BPeslier%2C+Anne+H%3BBrandon%2C+Alan+D%3BSelverstone%2C+Jane%3BAnonymous&rft.aulast=Schaffer&rft.aufirst=Lillian&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Quantifying sources, sinks and gas-surface interactions on the Moon from LADEE measurements of exospheric Na and K AN - 1849299697; 2016-105827 AB - We present numerical simulations of the generation and loss of the sodium (Na) and potassium (K) exospheres of the Moon and compare these results to recent LADEE observations. While both species appear to migrate towards the poles like other volatiles, Na resides on the soil and exosphere for one to two months before getting lost to the solar wind or the subsurface. K exhibits a different evolutionary trend: it is lost much more quickly than ionization and sputtering rates allow for, suggesting that it is lost to the ground in just a few bounces. Thus, the two alkalis exhibit very different interactions with the lunar surface. Reproducing the monthly variation exhibited by Na requires higher source rates at Mare, or higher sink rates at Highlands, or a combination of both. The very different behavior of Na on Mare and Highlands soils is reminiscent of laboratory experiments of water binding on Apollo fine soils. JF - American Geophysical Union Fall Meeting AU - Colaprete, Anthony AU - Sarantos, Menelaos AU - Poppe, Andrew R AU - Bennett, Christopher AU - Orlando, Thomas M AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53C EP - 2130 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299697?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Quantifying+sources%2C+sinks+and+gas-surface+interactions+on+the+Moon+from+LADEE+measurements+of+exospheric+Na+and+K&rft.au=Colaprete%2C+Anthony%3BSarantos%2C+Menelaos%3BPoppe%2C+Andrew+R%3BBennett%2C+Christopher%3BOrlando%2C+Thomas+M%3BAnonymous&rft.aulast=Colaprete&rft.aufirst=Anthony&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Prospecting for diverse igneous rock types on Mars; PIXL on "black beauty" NWA 7533 AN - 1849299690; 2016-105786 AB - In order to understand the evolution of the Martian crust and mantle, we need to acquire and analyze samples of igneous rocks other than the basaltic and ultramafic lithologies represented by the majority of Martian meteorites. Recent results from the Curiosity Rover demonstrate that diverse rock types exist in some Martian sedimentary environments in the form of conglomerate components or float, some of which shed light on the nature of early Martian crust (e.g., Sautter et al., 2015). We are developing investigation strategies for the in-situ instruments that will be flown on the Mars 2020 rover. These instruments will be used to inform the sampling campaigns required for future sample return missions. To achieve this, we applied PIXL (Planetary Instrument for X-ray Lithochemistry), an instrument for the Mars 2020 rover mission, to the meteorite NWA 7533. This meteorite is a pairing of NWA 7034, known informally as "Black Beauty", a new type of Martian meteorite that is broadly similar to the average composition of the Martian crust. This type of meteorite is essentially a 'conglomerate', with many diverse rock types, including mafic, feldspathic, and exotic rock fragments such as feldspar-ilmenite-phosphate clasts, as observed using higher-spatial resolution and higher sensitivity laboratory instruments (e.g., Agee et al., 2013; Humayun et al., 2014; Santos et al., 2015). Using PIXL, we analyzed a mm-scale cut and polished surface and applied algorithms developed by the PIXL team to semi-autonomously define and group regions containing similar lithological components (Thompson et al., 2015). PIXL data rapidly reveal distinctive zircon-bearing lithologies and feldspar-ilmenite-phosphate clasts similar to the detailed petrographic and mineralogical observations. Results suggest that PIXL readily identifies lithologies with minerals and elements (e.g., Rb and Sr) that are important for geochronology studies. JF - American Geophysical Union Fall Meeting AU - Liu, Yang AU - Flannery, David AU - Allwood, Abigail C AU - Thompson, David R AU - Hodyss, Robert P AU - Clark, Benton C AU - Elam, W Timothy AU - Hurowitz, Joel AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P51E EP - 08 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299690?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Prospecting+for+diverse+igneous+rock+types+on+Mars%3B+PIXL+on+%22black+beauty%22+NWA+7533&rft.au=Liu%2C+Yang%3BFlannery%2C+David%3BAllwood%2C+Abigail+C%3BThompson%2C+David+R%3BHodyss%2C+Robert+P%3BClark%2C+Benton+C%3BElam%2C+W+Timothy%3BHurowitz%2C+Joel%3BAnonymous&rft.aulast=Liu&rft.aufirst=Yang&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Using neutron spectroscopy to constrain the composition and provenance of Phobos and Deimos AN - 1849299688; 2016-105726 AB - The origin of the martian moons Phobos and Deimos is obscure and enigmatic. Hypotheses include the capture of asteroids originally from the outer main belt or beyond, residual material left over from Mars' formation, and accreted ejecta from a large impact on Mars, among others. Measurements of reflectance spectra indicate a similarity to dark, red D-type asteroids, but could indicate a highly space-weathered veneer. Here we suggest a way of constraining the near-surface composition of the two moons, for comparison to known meteoritic compositions. Neutron spectroscopy, particularly the thermal and epithermal neutron flux, distinguishes clearly between various classes of meteorites and varying hydrogen (water) abundances. Perhaps most surprising of all, a rendezvous with Phobos or Deimos is not necessary to achieve this. A low-cost mission based on the LADEE spacecraft design in an eccentric orbit around Mars can encounter Phobos every 2 weeks. As few as five flyby encounters at speeds of 2.3 km/sec and closest-approach distance of 3 km provide sufficient data to distinguish between ordinary chondrite, water-bearing carbonaceous chondrite, ureilite, Mars surface, and aubrite compositions. A one-Earth year mission design includes many more flybys at lower speeds and closer approach distances, as well as similar multiple flybys at Deimos in the second mission phase, as described in the Phobos And Deimos Mars Environment (PADME) mission concept. This presentation will describe the expected thermal and epithermal neutron fluxes based on MCNP6 simulations of different meteorite compositions and their uncertainties. JF - American Geophysical Union Fall Meeting AU - Elphic, Richard C AU - Lee, Pascal AU - Lim, Lucy F AU - Mittlefehldt, David W AU - Zolensky, Michael E AU - Colaprete, Anthony AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P44A EP - 09 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299688?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Using+neutron+spectroscopy+to+constrain+the+composition+and+provenance+of+Phobos+and+Deimos&rft.au=Elphic%2C+Richard+C%3BLee%2C+Pascal%3BLim%2C+Lucy+F%3BMittlefehldt%2C+David+W%3BZolensky%2C+Michael+E%3BColaprete%2C+Anthony%3BAnonymous&rft.aulast=Elphic&rft.aufirst=Richard&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Basin formation and cratering on Mercury revealed by MESSENGER AN - 1849299678; 2016-105801 AB - Mercury has been bombarded by asteroids and comets throughout its history. The resulting craters and basins are the dominant topographic features on the planet. Although visible basins contain some of the most interesting tectonic features, plains, and evidence of vertical stratigraphy, they fall far short of saturating the surface. Nevertheless, Mercury has a greater spatial density of peak-ring basins and protobasins than any other Solar System body, partly because these morphologies begin at smaller sizes than on most bodies. Cratering at approximately three times the cratering rate on the Moon, combined with likely plains-forming volcanism, prevents recognition of surface features older than 4.0 to 4.1 Ga. Severe losses of craters <50 km in diameter (<20 km in some places) are ascribed to extensive formation of intercrater plains. Estimates of the cratering chronology of Mercury suggest that most plains formation ended about 3.6 to 3.7 Ga, though activity has continued in a few small regions until much more recently (e.g., inside the Rachmaninoff basin). Mercury, compared with other terrestrial bodies, is struck by projectiles impacting at much higher velocities, which is probably responsible for the formation of abundant secondary craters that dominate the numbers of craters <10 km diameter on older plains surfaces. The history of high-velocity bombardment has resulted in the production of abundant impact melts and has churned and processed the regolith, and eroded older topography, more thoroughly than on other Solar System bodies. Although the possible role of Mercury-specific impactors ("vulcanoids") cannot be excluded, imaging searches by MESSENGER have revealed no remaining vulcanoids and no other evidence suggests that Mercury has been bombarded by anything other than the same populations of asteroids and comets that have impacted the Moon and other terrestrial planets from the end of the period of heavy bombardment 3.8 to 3.9 Ga to the present. JF - American Geophysical Union Fall Meeting AU - Chapman, Clark R AU - Fassett, Caleb AU - Marchi, Simone AU - Merline, William J AU - Ostrach, Lillian Rose AU - Prockter, Louise M AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53A EP - 2098 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299678?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Basin+formation+and+cratering+on+Mercury+revealed+by+MESSENGER&rft.au=Chapman%2C+Clark+R%3BFassett%2C+Caleb%3BMarchi%2C+Simone%3BMerline%2C+William+J%3BOstrach%2C+Lillian+Rose%3BProckter%2C+Louise+M%3BAnonymous&rft.aulast=Chapman&rft.aufirst=Clark&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Photometric properties of Pluto and Charon; comparison to other bodies AN - 1849299677; 2016-105911 AB - The New Horizons spacecraft provided the first detailed views of the photometric properties of Pluto and Charon, and how these properties relate to geophysical processes. Among the first results are the distribution of albedo on the surfaces of both bodies, and the surface phase function for both high- and low-albedo regions of Pluto, which yields information on macroscopic roughness and particle properties. The highest albedos on Pluto are similar to those of the bright icy moons of Saturn and Jupiter. The range of albedos on Pluto is surprisingly large, surpassed only by Saturn's moon Iapetus. Charon has a more limited range, with a bifurcated distribution. The disk-integrated phase function of Pluto is similar to those of the icy moons of Saturn. The geologic implications of these results will be discussed. Funded by NASA JF - American Geophysical Union Fall Meeting AU - Buratti, Bonnie J AU - Stern, Alan AU - Weaver, Harold A, Jr AU - Young, Leslie Ann AU - Ennico Smith, Kimberly AU - Momary, Thomas AU - Zangari, Amanda Marie AU - Binzel, Richard P AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P54A EP - 04 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299677?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Photometric+properties+of+Pluto+and+Charon%3B+comparison+to+other+bodies&rft.au=Buratti%2C+Bonnie+J%3BStern%2C+Alan%3BWeaver%2C+Harold+A%2C+Jr%3BYoung%2C+Leslie+Ann%3BEnnico+Smith%2C+Kimberly%3BMomary%2C+Thomas%3BZangari%2C+Amanda+Marie%3BBinzel%2C+Richard+P%3BAnonymous&rft.aulast=Buratti&rft.aufirst=Bonnie&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Cassini RADAR observations of Saturn's largest moon, Titan AN - 1849299668; 2016-105906 AB - The Cassini RADAR is a versatile instrument capable of operating in imaging, altimetry, scatterometry, radiometry, and, most recently, sounding modes. Despite vastly different material properties and environmental conditions, Titan's methane-based hydrologic system drives climatic and geologic processes that result in morphologic features with striking similarity to terrestrial counterparts, including vast equatorial dune fields, well-organized channel networks that route material through erosional and depositional landscapes defining source-to-sink sediment transport systems, and, perhaps most astonishingly, lakes and seas filled with liquid hydrocarbons. Using its various operating modes, the Cassini RADAR has provided a wealth of information regarding Titan's active surface-atmosphere system. In Synthetic Aperture Radar (SAR) mode, the RADAR has unveiled Titan's surface by producing backscatter maps with pixel scales of approximately 300 m. In altimetry mode, the RADAR has shown the elevation profile of surface features, including the liquid elevation of Titan's lakes and seas, revealed the roughness characteristics of the surface, and constrained the global shape. Most recently, the altimetry mode has doubled as a radar sounder that has successfully probed the depth and absorptivity of the lakes and seas. Data from the scatterometry and radiometry modes have been used to constrain material properties, including dielectric constants and volume scattering fractions, surface texture, and derive seasonal and diurnal temperature variations. Collectively, these datasets have revealed Titan's strange yet familiar nature, and demonstrated that it is one of the most compelling targets in our solar system. During our presentation, we will summarize these capabilities and review some of the most specular discoveries made by the Cassini RADAR. JF - American Geophysical Union Fall Meeting AU - Hayes, Alexander G, Jr AU - Mastrogiuseppe, Marco AU - Lunine, Jonathan I AU - Lorenz, Ralph D AU - Wall, Stephen D AU - Stiles, Bryan W AU - Kirk, Randolph L AU - Elachi, Charles AU - Hofgartner, Jason Daniel AU - Birch, Samuel P AU - Le Gall, Alice Anne AU - Poggiali, Valerio AU - Zebker, Howard A AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53G EP - 08 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299668?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Cassini+RADAR+observations+of+Saturn%27s+largest+moon%2C+Titan&rft.au=Hayes%2C+Alexander+G%2C+Jr%3BMastrogiuseppe%2C+Marco%3BLunine%2C+Jonathan+I%3BLorenz%2C+Ralph+D%3BWall%2C+Stephen+D%3BStiles%2C+Bryan+W%3BKirk%2C+Randolph+L%3BElachi%2C+Charles%3BHofgartner%2C+Jason+Daniel%3BBirch%2C+Samuel+P%3BLe+Gall%2C+Alice+Anne%3BPoggiali%2C+Valerio%3BZebker%2C+Howard+A%3BAnonymous&rft.aulast=Hayes&rft.aufirst=Alexander&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Tidal heating at Pluto and Charon as a result of non-zero obliquity AN - 1849299667; 2016-105747 AB - The Pluto-Charon system represents a unique opportunity to examine tidal heating in a zero eccentricity system. As a result, any tidal heating in these bodies will occur as a result of finite obliquity. While Pluto and Charon's obliquities have yet to be measured, theoretical models assuming the spin poles of the bodies are in Cassini states predict observable obliquity values. We present a new tidal heating model for synchronously rotating bodies. As a major result of this formulation, we show how tidal heating is quadratically dependent on the h and l Love numbers, in contrast with classic models which assume homogeneous interior structure and find a linear dependence on the k Love number. Furthermore, we show how the spatial patterns of tidal heating depend on obliquity as well as eccentricity. By applying theoretical predictions of Pluto and Charon's spin pole orientations we examine the radially integrated spatial pattern of tidal heating at these bodies. At degree two, these patterns on Pluto predict equal heating at the sub- and anti-Charon points. Recent observations, however, show a clear dichotomy at these locations. Degree three tidal heating patterns, though reduced in magnitude, break the spatial symmetry and represent a positive indicator that tidal heating is active at Pluto and may be a source of the geologic activity at Tombaugh Regio. JF - American Geophysical Union Fall Meeting AU - Walker, Matthew AU - Bills, Bruce G AU - Mitchell, Jonathan AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P51A EP - 2044 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299667?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Tidal+heating+at+Pluto+and+Charon+as+a+result+of+non-zero+obliquity&rft.au=Walker%2C+Matthew%3BBills%2C+Bruce+G%3BMitchell%2C+Jonathan%3BAnonymous&rft.aulast=Walker&rft.aufirst=Matthew&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Preliminary geological map of the Ac-H-5 Fejokoo quadrangle of Ceres; an integrated mapping study using Dawn spacecraft data AN - 1849299629; 2016-105869 AB - In order to enable methodical geologic mapping of the surface of Ceres the Dawn Science Team divided its surface into fifteen quadrangles. A preliminary map of the Fejokoo quadrangle is presented here. This region, located between 21 degrees -66 degrees N and 270-0 degrees E, hosts four primary features: (1) the centrally located, 90 km diameter, distinctly hexagonal impact crater Fejokoo; (2) a small unnamed crater midway up the eastern boundary of the quadrangle which contains and is surrounded by bright material; (3) an unnamed degraded crater NW of Fejokoo that contains lobate material deposits on both sides of the crater's S rim; and (4) a heavily cratered unit in the NW portion of the quadrangle. Key objectives for the ongoing mapping of this quadrangle are to assess the types of processes that may be responsible for the creation of the hexagonal Fejokoo crater, identifying the source and nature of the bright material on the eastern boundary, establishing possible mechanisms for the emplacement of lobate material deposits in Fejokoo and the unnamed crater to its NW, and establishing a detailed geological history of the quadrangle. The Fejokoo region is not associated with any major albedo feature identified by the Hubble Space Telescope (Li et al., 2006). At the time of this writing geologic mapping was performed using Framing Camera (FC) mosaics from the Approach (1.3 km/px) and Survey (415 m/px) orbits, including grayscale and color images and digital terrain models derived from stereo images. Future images from the High Altitude Mapping Orbit (140 m/px) and Low Altitude Mapping Orbit (35 m/px) will be used to refine the maps. Support of the Dawn Instrument, Operations, and Science Teams is acknowledged. This work is supported by grants from NASA, and from the German and Italian Space Agencies. JF - American Geophysical Union Fall Meeting AU - Hughson, Kynan AU - Russell, Christopher AU - Williams, David A AU - Buczkowski, Debra AU - Mest, Scott C AU - Scully, Jennifer E C AU - Hiesinger, Harald AU - Platz, Thomas AU - Ruesch, Ottaviano AU - Schenk, Paul AU - Frigeri, Alessandro AU - Jaumann, Ralf AU - Roatsch, Thomas AU - Preusker, Frank AU - Nathues, Andreas AU - Hoffmann, Martin AU - Schaefer, Michael AU - Park, Ryan S AU - Marchi, Simone AU - De Sanctis, Maria Cristina AU - Raymond, Carol A AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53E EP - 2172 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299629?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Preliminary+geological+map+of+the+Ac-H-5+Fejokoo+quadrangle+of+Ceres%3B+an+integrated+mapping+study+using+Dawn+spacecraft+data&rft.au=Hughson%2C+Kynan%3BRussell%2C+Christopher%3BWilliams%2C+David+A%3BBuczkowski%2C+Debra%3BMest%2C+Scott+C%3BScully%2C+Jennifer+E+C%3BHiesinger%2C+Harald%3BPlatz%2C+Thomas%3BRuesch%2C+Ottaviano%3BSchenk%2C+Paul%3BFrigeri%2C+Alessandro%3BJaumann%2C+Ralf%3BRoatsch%2C+Thomas%3BPreusker%2C+Frank%3BNathues%2C+Andreas%3BHoffmann%2C+Martin%3BSchaefer%2C+Michael%3BPark%2C+Ryan+S%3BMarchi%2C+Simone%3BDe+Sanctis%2C+Maria+Cristina%3BRaymond%2C+Carol+A%3BAnonymous&rft.aulast=Hughson&rft.aufirst=Kynan&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - The vertical distribution of buried volatiles at the Moon revealed by thermal and epithermal neutron fluxes from LEND observations AN - 1849299622; 2016-105817 AB - Determining the quantity and vertical distribution of volatile species on and below the surface of planetary bodies is vital to understand the primordial chemical inventory and subsequent evolution of planets. Volatiles may provide resources to support future human exploration. This is particularly true for the Moon, which is well observed by many methods from ground-based, lunar orbit, and in situ, and is an accessible destination or way station for human exploration. We present Geant4 models of relative fluxes of Fast, Epithermal, and Thermal neutron emission generated in a planetary regolith by galactic cosmic rays to reveal the first 1-2 meters vertical structure of embedded hydrogen or water. Varying ratios of Thermal versus Epithermal, low-energy-Epithermal versus high-energy-Epithermal, and Thermal versus Fast neutron emissions are diagnostics of the depth in which hydrogen/water layers are buried within the top 1-2 meters of the regolith. In addition, we apply model calculations to Lunar Exploration Neutron Detector (LEND) thermal and epithermal data, acquired on the Lunar Reconnaissance Orbiter (LRO), in specific regions of the Moon to retrieve the vertical distribution of buried ice from the remote sensing information. GEANT4 is a set of particle physics transport simulation codes that exploits object-oriented software methods to deliver a comprehensive and flexible toolkit that is modular and extensible, based on a free open-source development model. GEANT4 has become a standard tool to simulate applications as diverse as particle telescope and detector response, space radiation shielding and optimization, total ionizing dose in spacecraft components, and biological effects of radiation. JF - American Geophysical Union Fall Meeting AU - Chin, Gordon AU - Sagdeev, Roald AU - Su, Jao Jiang AU - Murray, Joseph AU - Livengood, Timothy A AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53B EP - 2115 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299622?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=The+vertical+distribution+of+buried+volatiles+at+the+Moon+revealed+by+thermal+and+epithermal+neutron+fluxes+from+LEND+observations&rft.au=Chin%2C+Gordon%3BSagdeev%2C+Roald%3BSu%2C+Jao+Jiang%3BMurray%2C+Joseph%3BLivengood%2C+Timothy+A%3BAnonymous&rft.aulast=Chin&rft.aufirst=Gordon&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - X-ray amorphous phases in Antarctica dry valley soils; insight into aqueous alteration processes on Mars? AN - 1849299619; 2016-105658 AB - The Chemistry and Mineralogy (CheMin) instrument onboard the Mars Curiosity rover has detected abundant amounts (approx. 25-30 wt.%) of X-ray amorphous materials in a windblown deposit (Rocknest) and in a sedimentary mudstone (Cumberland and John Klein) in Gale crater. On Earth, X-ray amorphous components are common in soils and sediments, but usually not as abundant as detected in Gale crater. One hypothesis for the abundant X-ray amorphous materials on Mars is limited interaction of liquid water with surface materials, kinetically inhibiting maturation to more crystalline phases. The objective of this study was to characterize the chemistry and mineralogy of soils formed in the Antarctica Dry Valleys, one of the driest locations on Earth. Two soils were characterized from different elevations, including a low elevation, coastal, subxerous soil in Taylor Valley and a high elevation, ultraxerous soil in University Valley. A variety of techniques were used to characterize materials from each soil horizon, including Rietveld analysis of X-ray diffraction data. For Taylor Valley soil, the X-ray amorphous component ranged from about 4 wt.% in the upper horizon to as high as 15 wt.% in the lowest horizon just above the permafrost layer. Transmission electron microscopy indicated that the presence of short-range ordered (SRO) smectite was the most likely candidate for the X-ray amorphous materials in the Taylor Valley soils. The SRO smectite is likely an aqueous alteration product of mica inherited from granitic materials during glaciation of Taylor Valley. The drier University Valley soil had lower X-ray amorphous contents of about 5 wt.% throughout the profile. The X-ray amorphous materials in University Valley are attributed to nanoparticles of TiO (sub 2) and possibly amorphous SiO (sub 2) . The high abundance of X-ray amorphous materials in Taylor Valley is surprising for one of the driest places on Earth. These materials may have been physically and chemical altered during soil formation, however, the limited interaction with water and low temperatures may have resulted in the formation of "immature" X-ray amorphous or SRO materials. Perhaps, a similar process contributes to the formation of the high content of X-ray amorphous materials detected on Mars. JF - American Geophysical Union Fall Meeting AU - Ming, Douglas W AU - Morris, Richard V AU - Rampe, Elizabeth B AU - Quinn, Julie E AU - Graff, Trevor G AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P24A EP - 02 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299619?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=X-ray+amorphous+phases+in+Antarctica+dry+valley+soils%3B+insight+into+aqueous+alteration+processes+on+Mars%3F&rft.au=Ming%2C+Douglas+W%3BMorris%2C+Richard+V%3BRampe%2C+Elizabeth+B%3BQuinn%2C+Julie+E%3BGraff%2C+Trevor+G%3BAnonymous&rft.aulast=Ming&rft.aufirst=Douglas&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Lunar field geological interpretations assisted by LROC, mini-RF and M3; Taurus-Littrow AN - 1849299608; 2016-105717 AB - Integration of Apollo 17 field observations and photographs, sample investigations, Lunar Reconnaissance Orbiter Camera images, Moon Mineralogical Mapper data, and Mini-RF images provides new insights into the geology of the valley of Taurus Littrow. Samples from the North Massif and the Sculptured Hills appear to represent a stratigraphic sequence of ejecta from the Cranium and Serenitatis basin-forming events. Published analyses of these samples provide the approximate ages for those events that appear consistent with this sequence; however, within current 2 sigma error limits, these ages overlap. Strong evidence exists that the Sculptured Hills physiographic unit consists of Imbrium ejecta made up of a layered, Mg-suite pluton. Rim boulders at Camelot Crater constitute wall rocks of the crater rather than ejecta and provide a potential opportunity for investigations of remnant magnetic field orientation at the time of the eruption of late mare basalt lavas in the valley. A second and older light mantle avalanche deposit has been identified, and the origin, potential fluidized flow mechanisms, and geology of the two avalanches from the South Massif have been clarified, including the probability of significant agitation heating during flow. The structure, potential effects, and timing of the Lee-Lincoln thrust fault, and of an ancillary fault revealed by radar, have been defined and raise doubts about the association of the light mantle avalanche with secondary impacts related to the Tycho event. JF - American Geophysical Union Fall Meeting AU - Schmitt, Harrison H AU - Petro, Noah E AU - Robinson, Mark Southwick AU - Wells, Ronald AU - Weiss, Benjamin P AU - Mercer, Cameron Mark AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P43F EP - 08 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299608?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Lunar+field+geological+interpretations+assisted+by+LROC%2C+mini-RF+and+M3%3B+Taurus-Littrow&rft.au=Schmitt%2C+Harrison+H%3BPetro%2C+Noah+E%3BRobinson%2C+Mark+Southwick%3BWells%2C+Ronald%3BWeiss%2C+Benjamin+P%3BMercer%2C+Cameron+Mark%3BAnonymous&rft.aulast=Schmitt&rft.aufirst=Harrison&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - How LEND sees the water on the Moon; the recent findings AN - 1849299559; 2016-105777 AB - The Lunar Exploration Neutron Detector (LEND) is operating on orbit around the Moon on-board the Lunar Reconnaissance Orbiter (LRO) spacecraft about six years. LEND has been designed and manufactured to investigate presence and determine average amount of hydrogen in upper ( approximately 1 m depth) subsurface layer of the Lunar regolith with spatial resolution approximately 10 km from 50 km orbit and to check the hypothesis what the permanently shadowed regions (PSRs) at circumpolar regions are the main reservoirs of a large deposition of water ice on the Moon. One of most interesting and surprising LEND observations that not all large PSRs regions contain a detectable amount of hydrogen but there are neutron suppression regions (NSRs) with statistically significant suppression of neutron flux. The NSRs partially overlap or include PSRs in Cabeus, Shoemaker, Haworth (on South) and Rozhdestvensky U (on North) but significant part of their area spread out at sunlit territory. This means that hydrogen may be preserved for a long time or even accumulated at approximately 1 m layer of regolith illuminated by Sun. The majority of PSRs do not show statistically significant suppressions of neutron flux in comparison with neighbor sunlit areas. This implies a hypothesis what a permanent shadow is not only necessary condition for the hydrogen hydrogen accumulation and preservation in the lunar subsurface. It is supported by analysis of poleward-facing and equatorial-facing slopes of craters. This analysis shows a statistically significant increasing of hydrogen concentration at poleward-facing slopes in comparison to equatorial-facing slopes. Moreover, it was found evidence that hydrogen-bearing volatiles are being diurnally cycled at the top meter of the Moon's high-latitude surfaces, above + or -75 degrees . JF - American Geophysical Union Fall Meeting AU - Sanin, Anton B AU - Mitrofanov, Igor G AU - Litvak, Maxim L AU - Bakhtin, Boris N AU - Bodnarik, Julia AU - Boynton, William V AU - Chin, Gordon AU - Evans, Larry G AU - Golovin, Dmitry AU - Harshman, Karl AU - Livengood, Timothy A AU - Malakhov, Alexey V AU - McClanahan, Timothy P AU - Mokrousov, Maxim AU - Sagdeev, Roald AU - Starr, Richard D AU - Vostrukhin, Andrey AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P51D EP - 07 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299559?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=How+LEND+sees+the+water+on+the+Moon%3B+the+recent+findings&rft.au=Sanin%2C+Anton+B%3BMitrofanov%2C+Igor+G%3BLitvak%2C+Maxim+L%3BBakhtin%2C+Boris+N%3BBodnarik%2C+Julia%3BBoynton%2C+William+V%3BChin%2C+Gordon%3BEvans%2C+Larry+G%3BGolovin%2C+Dmitry%3BHarshman%2C+Karl%3BLivengood%2C+Timothy+A%3BMalakhov%2C+Alexey+V%3BMcClanahan%2C+Timothy+P%3BMokrousov%2C+Maxim%3BSagdeev%2C+Roald%3BStarr%2C+Richard+D%3BVostrukhin%2C+Andrey%3BAnonymous&rft.aulast=Sanin&rft.aufirst=Anton&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Lakes on early Mars; a space-for-time substitution experiment AN - 1849299549; 2016-105643 AB - Lakes were abundant and active on early Mars for 100s millions of years. As global climate change prevented liquid water from remaining stable at the surface, they left behind key evidence of their past existence and duration in the landscape morphology, mineralogy, composition, and topography. As significant markers of environmental change, they have become critical exploration targets for our understanding of Mars past habitability potential, and the preservation potential of their sediments make them high-priority candidate landing sites for the upcoming NASA and ESA rover missions that will search for evidence of biosignatures on early Mars. Identifying and caching the most valuable samples with these missions will require to both recognize these signatures, the geological and environmental processes that may have modified them through time, the spatiotemporal constraints these processes could have imposed on a biogeological record, and their significance for biosignatures and their preservation potential. To help us understand where, what, and how to search on Mars, the Chilean Atacama desert, Altiplano, and the High Andes have provided robust analog study sites over the past 20 years. Exposed to the strongest solar irradiance measured so far on our planet, from sea level up to 6,000 m elevation, and from glacial regions to some of the most arid conditions on Earth, these unique sites allow us to perform a space-for-time substitution experiments that shows the likely evolution of martian lake habitats over time from the early Noachian to the Hesperian. The observed changes provide critical clues about plausible scenarios for the evolution of habitability and life potential. They also give us pointers on how increased environmental extremes linked to a thinning unstable atmosphere, increasing UV, desiccation, and geological and climate changes, may have impacted biodiversity at local and global scale. JF - American Geophysical Union Fall Meeting AU - Cabrol, Nathalie A AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P23C EP - 01 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299549?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Lakes+on+early+Mars%3B+a+space-for-time+substitution+experiment&rft.au=Cabrol%2C+Nathalie+A%3BAnonymous&rft.aulast=Cabrol&rft.aufirst=Nathalie&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - RIS4E at Kilauea's December 1974 (D1974) flow; establishing the D1974 flow as an ideal Mars analog AN - 1849299529; 2016-105692 AB - The Kilauea December 1974 (D1974) flow was emplaced from a series of en echelon fissures southwest of Kilauea Caldera. In 6.5 hours the D1974 flow was emplaced over the Keanakako'i ash member as a rapidly emplaced sheet flow. This flow has previously been used as a location for radar roughness studies due to the exposure of abrupt changes in surface texture ranging between smooth pahoehoe, rubbly and slabby lavas and 'a'a lava. When viewed in visible remote sensing images, this flow field displays dark and light toned areas that reveal sinuous patterns, streamlined islands, and rafted lava slabs and plates. The flow is an ideal location to study lava textures, textural relationships and the formation of non-traditional channels and associated features as analogs to characterizing the formation of channel networks on the flanks of martian volcanoes or rilles in the lunar mare.The D1974 flow is also positioned downwind from Kilauea Caldera along the volcano's SW rift zone. D1974 lavas flowed across older, active fumaroles and have since been exposed to acid fog, rain, and other plume related processes. In 2008 the Kilauea Caldera experienced an explosive event along the wall of Halema'uma'u and has since displayed an active lava lake, thereby elevating the flow's exposure to processes related to volcanic gasses. Alteration products have therefore formed both in and around the older fumaroles (at the solfatara site) as well as being deposited as thin coatings over the entire length of the flow. These products are reminiscent of sulfate-rich materials that have been identified on Mars by several groups. Though these martian deposits have been identified and analyzed, their formation mechanism remains somewhat ambiguous. The D1974 flow represents an ideal analog with which to test various formation scenarios using a variety of field portable technologies, designed to analyze the alteration products in situ (thereby preserving their initial structures and textures). JF - American Geophysical Union Fall Meeting AU - Young, Kelsey E AU - Bleacher, Jacob E AU - Rogers, Deanne AU - McAdam, Amy AU - Garry, William Brent AU - Scheidt, Stephen P AU - Carter, Lynn M AU - Glotch, Timothy D AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P31A EP - 2049 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299529?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=RIS4E+at+Kilauea%27s+December+1974+%28D1974%29+flow%3B+establishing+the+D1974+flow+as+an+ideal+Mars+analog&rft.au=Young%2C+Kelsey+E%3BBleacher%2C+Jacob+E%3BRogers%2C+Deanne%3BMcAdam%2C+Amy%3BGarry%2C+William+Brent%3BScheidt%2C+Stephen+P%3BCarter%2C+Lynn+M%3BGlotch%2C+Timothy+D%3BAnonymous&rft.aulast=Young&rft.aufirst=Kelsey&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Mercury's lithospheric thickness and crustal density, as inferred from MESSENGER observations AN - 1849299527; 2016-105805 AB - The gravity field and topography of Mercury measured by the MESSENGER spacecraft have provided insights into the thickness of the planet's elastic lithosphere, Te. We localized the HgM006 free-air gravity anomaly and gtmes (sub 125) v03 shape datasets to search for theoretical elastic thickness solutions that best fit a variety of localized coherence spectra between Bouguer gravity anomaly and topography. We adopted a crustal density of rho crust=2700 kg m-3 for the Bouguer gravity correction, but density uncertainty did not markedly affect the elastic thickness estimates. A best-fit solution in the northern smooth plains (NSP) gives an elastic thickness of Te =30-60 km at the time of formation of topography for a range of ratios of top to bottom loading from 1 to 5. For a mechanical lithosphere with a thickness of approximately 2Te and a temperature of 1600 degrees C at the base, this solution is consistent with a geothermal gradient of 9-18 K km (super -1) . A similar coherence analysis exterior to the NSP produces an elastic thickness estimate of Te=20-50 km, albeit with a poorer fit. Coherence in the northern hemisphere as a whole does not approach zero at any wavelength, because of the presence of variations in crustal thickness that are unassociated with elastic loading. The ratios and correlations of gravity and topography at intermediate wavelengths (harmonic degree l between 30 and 50) also constrain regional crustal densities. We localized gravity and topography with a moving Slepian taper and calculated regionally averaged crustal densities with the approximation rho crust=Zl/(2pi G), where Zl is the localized admittance and G is the gravitational constant. The only regional density estimates greater than 2000 kg m (super -3) for l=30 correspond to the NSP. Density estimates outside of the NSP were unreasonably low, even for highly porous crust. We attribute these low densities to the confounding effects of crustal thickness variations and Kaula filtering of the gravity dataset at the highest harmonic degrees, both of which tend to introduce a downward bias to crustal density estimation. An alternative analysis-which corrected for crustal thickness variability and was restricted to regions with gravity/topography coherence greater than 0.6-yielded an aggregate crustal density of rho crust=2602+ or -470 kg m (super -3) for Mercury's high northern latitudes. JF - American Geophysical Union Fall Meeting AU - James, Peter B AU - Mazarico, Erwan M AU - Genova, Antonio AU - Smith, David E AU - Neumann, Gregory A AU - Solomon, Sean C AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53A EP - 2102 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299527?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Mercury%27s+lithospheric+thickness+and+crustal+density%2C+as+inferred+from+MESSENGER+observations&rft.au=James%2C+Peter+B%3BMazarico%2C+Erwan+M%3BGenova%2C+Antonio%3BSmith%2C+David+E%3BNeumann%2C+Gregory+A%3BSolomon%2C+Sean+C%3BAnonymous&rft.aulast=James&rft.aufirst=Peter&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - The low-degree shape of Mercury AN - 1849299524; 2016-105806 AB - The shape of Mercury, particularly when combined with its geoid, provides clues to the planet's internal structure, thermal evolution, and rotational history. Twenty-five million elevation measurements of the northern hemisphere, acquired by the Mercury Laser Altimeter on the MErcury Surface, Space ENvironment, GEochemistry, and Ranging spacecraft, were combined with 378 occultation measurements of radio-frequency signals from the spacecraft in the planet's southern hemisphere to reveal the low-degree shape of Mercury. We solved for the spherical-harmonic coefficients through degree and order 128 and found that Mercury's mean radius is 2439.36+ or -0.02 km. The offset between the planet's centers of mass and figure is negligible (40+ or -40 m) along the polar axis and modest (140+ or -50 m) in the equatorial plane. Mercury's spherical-harmonic shape spectrum is dominated by degree 2, and the planet's first-order shape is that of a triaxial ellipsoid with semimajor axes a, b, and c. The polar radius, c, is 1.65 km less than (a+b)/2, and the equatorial difference, a-b, is 1.25 km. The long axis is rotated 15 degrees west of Mercury's dynamically defined principal axis. Mercury's geoid is similarly dominated by degree 2 and well described by a triaxial ellipsoid. The degree-2 geoid and shape are highly correlated, but the power spectral density of the geoid at degree 2 is only 1% of its shape counterpart, implying substantial compensation of elevation variations on a global scale and that Mercury is not in hydrostatic equilibrium. JF - American Geophysical Union Fall Meeting AU - Perry, Mark E AU - Neumann, Gregory A AU - Mazarico, Erwan M AU - Hauck, Steven A, II AU - Solomon, Sean C AU - Zuber, Maria T AU - Smith, David E AU - Phillips, Roger J AU - Margot, Jean-Luc AU - Johnson, Catherine L AU - Ernst, Carolyn M AU - Oberst, Juergen AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53A EP - 2104 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299524?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Crystal-chemical+analysis+of+Martian+minerals+in+Gale+Crater&rft.au=Morrison%2C+S+M%3BDowns%2C+R+T%3BBlake%2C+D+F%3BBish%2C+D+L%3BMorris%2C+R+V%3BVaniman%2C+D+T%3BRampe%2C+Elizabeth+B%3BAchilles%2C+C+N%3BMing%2C+D+W%3BChipera%2C+S+J%3BTreiman%2C+A+H%3BGellert%2C+R%3BBristow%2C+T+F%3BCrisp%2C+J+A%3BMorookian%2C+J+M%3BSarrazin%2C+P+C%3BFarmer%2C+J+D%3BYen%2C+A+S%3BDes+Marais%2C+D+J%3BGrotzinger%2C+John+P%3BStolper%2C+E+M%3BWilson%2C+M+A%3BSpanovich%2C+N%3BAnderson%2C+R+C%3BAnonymous&rft.aulast=Morrison&rft.aufirst=S&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Europa tide inversion from reason altimetry AN - 1849299462; 2016-105901 AB - Determining the amplitude of Europa's tides is central to understanding its ice shell and subsurface ocean. We assess the accuracy of retrieving the tidal amplitude solely using altimetry profiles produced by the REASON instrument (Radar for Europa Assessment and Sounding: Ocean to Near-surface), selected for the Europa Clipper mission. We investigate retrieval of the first Love number, h (sub 2) , by inverting the entire set of altimetric ground tracks over the life of the mission. The inversion simultaneously estimates h (sub 2) , long-wavelength topography, and spacecraft orbit parameters. In its simplest form, the inversion is quite robust: the time and location of the ground track uniquely fixes the phase of the sampled tide, where surface roughness acts as noise to be averaged out. In addition, we make an initial evaluation of altimetric biases that arise from known and hypothesized Europa topography using surface point target simulations. Overall, we find that the altimeter alone is capable of retrieving the first tidal Love number with accuracy sufficient to observationally constrain ice-shell thickness. JF - American Geophysical Union Fall Meeting AU - Haynes, Mark AU - Schroeder, Dustin M AU - Steinbruegge, Gregor AU - Bills, Bruce G AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53G EP - 03 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299462?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Europa+tide+inversion+from+reason+altimetry&rft.au=Haynes%2C+Mark%3BSchroeder%2C+Dustin+M%3BSteinbruegge%2C+Gregor%3BBills%2C+Bruce+G%3BAnonymous&rft.aulast=Haynes&rft.aufirst=Mark&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - N (sub 2) glacial flow on and onto Sputnik Planum AN - 1849299447; 2016-105743 AB - Sputnik Planum (SP)[1,2] is the high albedo crater-free western portion of Tombaugh Regio imaged in July by the New Horizons LORRI instrument. The relatively high resolution (400 m/pix) LORRI mosaics of the northern portions of the planum bordered by the Cousteau Rupes (CR) scarp reveal surface patterns highly suggestive of viscous flow dynamics. Spectroscopic measurements of SP taken by the New Horizons LEISA instrument also indicate that SP is a region containing (among others) a significant amount of N (sub 2) [2]. Taken together these observations suggest the possibility that the high albedo material on SP is glacial N (sub 2) ice atop a bedrock-like substrate and the notable lack of craters on SP means that these processes are acting on relatively fast geologic timescales. Using the known properties of N (sub 2) ice in the temperature range of interest, we formulate and implement a numerical landform evolution model in order to examine a number of hypothetical evolutionary scenarios for SP and its environs. [1] All place names on Pluto and Charon are informally known as such as of the writing of this abstract. [2] Stern, S. A et al. 2015 Science. JF - American Geophysical Union Fall Meeting AU - Umurhan, Orkan M AU - Moore, Jeffrey M AU - Howard, Alan D AU - McKinnon, William B AU - Nimmo, Francis AU - Schenk, Paul AU - White, Oliver L AU - Grundy, William M AU - Stern, Alan AU - Olkin, Catherine AU - Weaver, Harold A, Jr AU - Young, Leslie Ann AU - Ennico Smith, Kimberly AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P51A EP - 2040 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299447?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=N+%28sub+2%29+glacial+flow+on+and+onto+Sputnik+Planum&rft.au=Umurhan%2C+Orkan+M%3BMoore%2C+Jeffrey+M%3BHoward%2C+Alan+D%3BMcKinnon%2C+William+B%3BNimmo%2C+Francis%3BSchenk%2C+Paul%3BWhite%2C+Oliver+L%3BGrundy%2C+William+M%3BStern%2C+Alan%3BOlkin%2C+Catherine%3BWeaver%2C+Harold+A%2C+Jr%3BYoung%2C+Leslie+Ann%3BEnnico+Smith%2C+Kimberly%3BAnonymous&rft.aulast=Umurhan&rft.aufirst=Orkan&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Hydrogen bearing material in the lunar exosphere AN - 1849299439; 2016-105715 AB - We report on observations of water and its daughters in the lunar exosphere. Data from LADEE NMS, LADEE UVS, and LRO LAMP indicating the presence of H, H (sub 2) , OH, and H (sub 2) O are presented in terms of their relationship to external drivers. These observations point to the roles of solar wind and micrometeoroids in the source and release of hydrogen-bearing atoms and molecules in the exosphere. In particular, the implantation of H via solar wind is found to be the largest contributor to H (sub 2) in the moon's exosphere. However, the spatial distribution is more consistent with a release mechanism centered on the morning hemisphere. Thus the data are consistent with H (sub 2) created through a 2-step process involving the implantation of solar wind and subsequent release by micrometeoroids. This accounts for >12% of the solar wind H budget, leaving < 50% of the solar wind proton budget unobserved. LADEE data are consistent with water mainly being released by micrometeoroids. We present an overall picture of the present-day water cycle occurring on the Moon. JF - American Geophysical Union Fall Meeting AU - Hurley, Dana AU - Benna, Mehdi AU - Colaprete, Anthony AU - Retherford, Kurt D AU - Cook, Jason Campbell AU - Elphic, Richard C AU - Farrell, William M AU - Killen, Rosemary M AU - Sarantos, Menelaos AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P43F EP - 06 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299439?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Hydrogen+bearing+material+in+the+lunar+exosphere&rft.au=Hurley%2C+Dana%3BBenna%2C+Mehdi%3BColaprete%2C+Anthony%3BRetherford%2C+Kurt+D%3BCook%2C+Jason+Campbell%3BElphic%2C+Richard+C%3BFarrell%2C+William+M%3BKillen%2C+Rosemary+M%3BSarantos%2C+Menelaos%3BAnonymous&rft.aulast=Hurley&rft.aufirst=Dana&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Australian acid playa lake as a Mars analog; results from sediment lipid analysis AN - 1849299431; 2016-105644 AB - The ephemeral saline acidic lakes on the Yilgarn Craton of Western Australia have been suggested as geochemical analogues to martian terrains. Both are characterized by interbedded phyllosilicates and hydrated sulfates. On Mars, these areas indicate shifting environmental conditions, from the neutral/alkaline and wet conditions that dominated during the Noachian era to the more familiar dry, acidic conditions that began in the Hesperian. The habitability of such a dynamic environment can be informed by investigation of the Yilgarn Lake system. Previous work has found phospholipid fatty acids (PLFA) evidence of microbial communities in sections of sediment cores taken from Lake Gilmore. These communities include both Gram-positive and -negative bacteria, Actinomycetes, and even methanotrophs. Given recurring detection of methane on the martian surface, evidence of a methane cycling community in an analogous environment is of particular interest. In this study we analyze the carbon isotope composition of bulk organic material as well as extracted lipids from the Lake Gilmore sediment cores at both a near-shore and mid-lake location. These analyses reveal very low accumulations of organic carbon, concentrated primarily in the gypsum-rich near-shore core. The near-shore sediments show a down-core decrease in abundance of organic carbon as well as depletion in the carbon isotope composition (delta (super 13) C) with depth. Bulk carbon did not exhibit the unique, highly depleted, diagnostic signature associated with methanotrophic biomass. Compound-specific isotope analysis (CSIA) of carbon in extracted methanotroph PFLAs can confirm the presence of a methane cycling metabolism at depth. Also, additional extractions have isolated lipids associated with lake-edge grasses. These analyses consider both the chain-length distribution and carbon CSIA of these lipids in order to understand the effect of terrestrial detritus on any preserved methanotroph carbon signal, given the very low amounts of microbial biomass found in lake cores. While the mineralogy does not suggest anaerobic conditions, further investigation includes extraction of archaeal lipids in order to identify the presence of any methanogenic community associated with the putative methanotrophic community. JF - American Geophysical Union Fall Meeting AU - Graham, Heather V AU - Baldridge, Alice M AU - Stern, Jennifer C AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P23C EP - 02 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299431?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Testing+the+Mimas+ocean+hypothesis+using+tidal-tectonic+theory&rft.au=Rhoden%2C+Alyssa+R%3BTajeddine%2C+Radwan%3BHenning%2C+Wade%3BHurford%2C+Terry+A%3BAnonymous&rft.aulast=Rhoden&rft.aufirst=Alyssa&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Near-vent, fissure-fed lava channel network morphologies in the Kilauea December 1974 flow; implications for differentiating lava construction from fluvial erosion on planets AN - 1849299429; 2016-106100 AB - Streamlined islands are often assumed to be the product of erosion by water and are cited as evidence of aqueous flows on Mars. However, lava can build streamlined islands in a manner that is more easily explained by flow thickening followed by partial drainage of preferred lava pathways. Kilauea's December 1974 (D1974) flow was emplaced as a broad sheet-like flow from a series of en echelon fissures across an older hummocky pahoehoe tumulus field. The lavas surrounded the tumuli and coalesced to fill a topographic low near the basal scarp of the Koae Fault System. As these obstacles were inundated by the D1974 flow, the lava preferentially cooled around the tumuli to form a higher viscosity zone beneath a smooth crust. Stagnation of these thinner, cooler, and more viscous zones focused the flow into a series of preferred lava pathways located between the stagnant islands. Changes in the local discharge rate disrupted the crust of the flow above the lower viscosity pathways. Older tumuli adjacent to the D1974 flow display the same relief as the flow's islands and uncovered portions of this older flow are exposed at the tops of many islands, supporting an interpretation that islands were anchored by high-standing pre-flow tumuli. As the local lava supply waned, partial drainage of the preferred pathways occurred between the higher-standing surfaces anchored to the older tumuli. The resulting morphology consists of a relatively smooth flow field with thin margins that is dissected by depressed pathways or channels. This morphology resembles an erosional surface incised into a smooth plain, but actually represents an initial constructional process followed by partial drainage within a viscous lava flow. Many other Hawaiian rift zone, fissure-fed flow fields display comparable morphologies in the near vent facies, including islands, terraces, thin flow margins and a lack of well defined topographic levees along channels. Thus, branching channel networks and streamlined islands within fissure-fed flow fields on Mars could have resulted from a combination of initial flow thickening followed by partial drainage of preferred lava pathways, and therefore do not necessarily imply substrate erosion or modification by fluvial processes. JF - American Geophysical Union Fall Meeting AU - Bleacher, Jacob E AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract V31C EP - 3041 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299429?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Near-vent%2C+fissure-fed+lava+channel+network+morphologies+in+the+Kilauea+December+1974+flow%3B+implications+for+differentiating+lava+construction+from+fluvial+erosion+on+planets&rft.au=Bleacher%2C+Jacob+E%3BAnonymous&rft.aulast=Bleacher&rft.aufirst=Jacob&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Pluto as seen by the LEISA spectrometer on New Horizons AN - 1849299420; 2016-105939 AB - After its 3463-day journey, the New Horizons spacecraft flew by the Pluto-Charon system at nearly equal 12,000 km from Pluto's surface on 14 July 2015. Images from the New Horizons spacecraft reveal an icy surface with terrains of widely different ages and a significant degree of localized coloration. Pluto was observed at high spatial resolution ( nearly equal 6 km/px) by the LEISA imaging spectrometer. LEISA is a component of the Ralph instrument (Reuter, D.C., Stern, S.A., Scherrer, J., et al. 2008, Space Sci. Rev. 140, 129) and affords a spectral resolving power of 240 in the wavelength range 1.25-2.5 mu m, and 560 in the range 2.1-2.25 mu m. Spatially resolved spectra with LEISA are used to map the distributions of the known ices on Pluto (N (sub 2) , CH (sub 4) , CO, C (sub 2) H (sub 6) ) and to search for other surface components. We present results obtained from the analysis of the high spatial resolution dataset obtained close to flyby. JF - American Geophysical Union Fall Meeting AU - Cruikshank, Dale P AU - Grundy, William M AU - Olkin, C AU - Stern, Alan AU - Young, L A AU - Binzel, Richard P AU - Cook, Jason Campbell AU - Dalle Ore, Cristina AU - Earle, Alissa M AU - Ennico Smith, Kimberly AU - Jennings, Donald E AU - Howett, Carly AU - Linscott, I AU - Lunsford, Allen AU - Parker, Alex Harrison AU - Parker, Joel W AU - Protopapa, S AU - Reuter, Dennis AU - Singer, Kelsi N AU - Spencer, J R AU - Tsang, C AU - Weaver, Harold A AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract U53A EP - 04 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299420?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Pluto+as+seen+by+the+LEISA+spectrometer+on+New+Horizons&rft.au=Cruikshank%2C+Dale+P%3BGrundy%2C+William+M%3BOlkin%2C+C%3BStern%2C+Alan%3BYoung%2C+L+A%3BBinzel%2C+Richard+P%3BCook%2C+Jason+Campbell%3BDalle+Ore%2C+Cristina%3BEarle%2C+Alissa+M%3BEnnico+Smith%2C+Kimberly%3BJennings%2C+Donald+E%3BHowett%2C+Carly%3BLinscott%2C+I%3BLunsford%2C+Allen%3BParker%2C+Alex+Harrison%3BParker%2C+Joel+W%3BProtopapa%2C+S%3BReuter%2C+Dennis%3BSinger%2C+Kelsi+N%3BSpencer%2C+J+R%3BTsang%2C+C%3BWeaver%2C+Harold+A%3BAnonymous&rft.aulast=Cruikshank&rft.aufirst=Dale&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - The collisional history of dwarf planet Ceres revealed by Dawn AN - 1849299389; 2016-105882 AB - Impact craters are a ubiquitous feature of solid surfaces of celestial objects. Craters are oftentimes used to constrain the past evolution of their host objects, as well as to assess their crustal structures. The Dawn spacecraft, currently in orbit around the dwarf planet Ceres, has revealed a surface peppered with impact craters. Two important facts emerge from their global spatial distribution: i) significant longitudinal and latitudinal asymmetries in the crater areal density, ii) and the lack of well-preserved craters larger than 400 km in imaging data. Interestingly, most of the low crater density terrains are found in the vicinity of the three largest, well-preserved impact craters ranging from approximately 160 to approximately 290 km in diameter. These low crater areal density terrains expand over a greater distance than observed for large craters on rocky bodies and icy satellites, which typically are confined within one crater radius from the rim. To assess the collisional history of Ceres we developed a Monte Carlo model that tracks the timing, size and number of collisions throughout the history of the solar system. The model shows that Ceres' collisional evolution should have resulted typically in a factor of 10 more craters than observed, with some approximately 10 craters larger than 400 km expected to have formed over the last 4.5 Gyr ago. While small craters may have reached an equilibrium level, which does not allow then to further increase in number, the lack of evident large craters is a puzzle. A possibility is that the scars of large craters have been obliterated by topography relaxation due to an ice-rich crust. Here we will present an overview of the Ceres' crater spatial distribution and compare it to other siblings (such as the asteroid Vesta), and collisional evolution models. We will also discuss how these results pose important constraints on the internal structure of the dwarf planet in conjunction with surface composition and gravity data acquired by Dawn. JF - American Geophysical Union Fall Meeting AU - Marchi, Simone AU - Williams, David A AU - Mest, Scott C AU - Schenk, Paul AU - O'Brien, David P AU - De Sanctis, Maria Christina AU - Ermakov, Anton AU - Castillo, Julie C AU - Jaumann, Ralf AU - Neesemann, Adrian AU - Hiesinger, Harald AU - Park, Ryan S AU - Kneissl, Thomas AU - Schmedemann, Nico AU - Raymond, Carol A AU - Russell, Christopher T AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53E EP - 2185 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299389?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=The+collisional+history+of+dwarf+planet+Ceres+revealed+by+Dawn&rft.au=Marchi%2C+Simone%3BWilliams%2C+David+A%3BMest%2C+Scott+C%3BSchenk%2C+Paul%3BO%27Brien%2C+David+P%3BDe+Sanctis%2C+Maria+Christina%3BErmakov%2C+Anton%3BCastillo%2C+Julie+C%3BJaumann%2C+Ralf%3BNeesemann%2C+Adrian%3BHiesinger%2C+Harald%3BPark%2C+Ryan+S%3BKneissl%2C+Thomas%3BSchmedemann%2C+Nico%3BRaymond%2C+Carol+A%3BRussell%2C+Christopher+T%3BAnonymous&rft.aulast=Marchi&rft.aufirst=Simone&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Exploring the integration of field portable instrumentation into real-time surface science operations with the RIS4E SSERVI team AN - 1849299382; 2016-105723 AB - The Remote, In Situ, and Synchrotron Studies for Science (RIS4E) team represents one node of the Solar System Exploration Research Virtual Institute (SSERVI) program. While the RIS4E team consists of four themes, each dedicated to a different aspect of airless body exploration, this submission details the RIS4E work underway to maximize an astronaut's effectiveness while conducting surface science. The next generation of surface science operations will look quite different than the EVAs (extra vehicular activities) conducted during Apollo. Astronauts will possess data of much higher resolution than the Apollo reconnaissance data, and the EVAs will thus be designed to answer targeted science questions. Additionally, technological advancements over the last several decades have made it possible to conduct in situ analyses of a caliber much greater than was achievable during Apollo. For example, lab techniques such as x-ray fluorescence, x-ray diffraction, and multi-spectral imaging are now available in field portable formats, meaning that astronauts can gain real-time geochemical awareness during sample collection. The integration of these instruments into EVA operations, however, has not been widely tested. While these instruments will provide the astronaut with a high-resolution look at regional geochemistry and structure, their implementation could prove costly to the already constrained astronaut EVA timeline. The RIS4E team, through fieldwork at the December 1974 lava flow at Kilauea Volcano, HI, investigates the incorporation of portable technologies into planetary surface exploration and explores the relationship between science value added from these instruments and the cost associated with integrating them into an EVA timeline. We also consider what an appropriate instrumentation suite would be for the exploration of a volcanic terrain using this ideal terrestrial analog (see Rogers et al., Young et al., Bleacher et al., and Yant et al., this meeting). JF - American Geophysical Union Fall Meeting AU - Young, Kelsey E AU - Bleacher, Jacob E AU - Rogers, Deanne AU - Garry, William Brent AU - McAdam, Amy AU - Scheidt, Stephan P AU - Carter, Lynn M AU - Glotch, Timothy D AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P44A EP - 06 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299382?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=ARGUS%3B+a+concept+study+for+an+Io+observer+mission+from+the+2014+NASA%2FJPL+Planetary+Science+Summer+School&rft.au=Marcucci%2C+E+C%3BHays%2C+L%3BHolstein-Rathlou%2C+C%3BKeane%2C+J+T%3BBecerra%2C+P%3BBasu%2C+K%3BDavis%2C+B%3BFox%2C+V%3BHerman%2C+J%3BHughes%2C+A%3BMendez+Ramos%2C+E%3BNelessen%2C+A%3BNeveu%2C+M%3BParrish%2C+N%3BScheinberg%2C+A%3BWrobel%2C+J+S%3BAnonymous&rft.aulast=Marcucci&rft.aufirst=E&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - The radar for icy moon exploration (RIME) on the JUICE mission AN - 1849299379; 2016-105899 AB - The Radar for Icy Moon Exploration (RIME) is one of the main instruments included in the JUpiter ICy moons Explorer (JUICE) ESA mission. It is a radar sounder designed for studying the subsurface geology and geophysics of Galilean icy moons (i.e., Ganymede, Europa and Callisto) and for detecting possible subsurface water. RIME is designed for penetration of the icy moons up to a depth of 9 km. Two main operation scenarios are foreseen for RIME: i) flyby observations of Europa, Ganymede and Callisto (from a distance of 1000 km to the closest approach of about 400 km); and ii) circular orbital observations around Ganymede at 500 km of altitude. According to these scenarios, RIME is designed to explore the icy shell of the Galilean icy satellites by characterizing the wide range of compositional, thermal, and structural variation found in the subsurface of these moons. RIME observations will profile the ice shells of the Galilean icy satellites with specific focus on Ganymede given the circular orbital phase. The acquired measures will provide geological context on hemispheric (thousands of km), regional (hundreds of km with multiple overlaps), and targeted (tens of km) scales appropriate for a variety of hypothesis tests. RIME will operate in a single frequency band, centred at 9 MHz. The frequency was selected as the result of extensive study of penetration capabilities, surface roughness of the moons, Jovian radio noise, antenna accommodation, and system design. The 9 MHz frequency provides penetration capabilities and mitigation of surface scattering (which can cause signal loss and clutter issues), at the expense of mapping coverage, as it is likely to obtain high SNR observations only on the anti-Jovian side of the target moons. The RIME antenna is a 16 m dipole. The chirp pulse bandwidth is up to 3 MHz, which provides vertical resolution of about 50 m in ice after side lobe weighting. RIME will also operate with 1 MHz bandwidth to reduce data volume when observing deep sounding targets. This corresponds to a vertical resolution of about 140 m in ice. Within the high and low resolution modes, parameters can be adjusted to change the output data rate. RIME can downlink raw data for on-ground focusing or pre-processed data by a presuming operation for data rate reduction. JF - American Geophysical Union Fall Meeting AU - Bruzzone, Lorenzo AU - Plaut, Jeffrey AU - Alberti, Giovanni AU - Blankenship, Donald D AU - Bovolo, Francesca AU - Campbell, Bruce A AU - Castelletti, Davide AU - Gim, Yonggyu AU - Ilisei, Ana Maria AU - Kofman, Wlodek W AU - Komatsu, Goro AU - McKinnon, William B AU - Mitri, Giuseppe AU - Moussessian, Alina AU - Notarnicola, Claudia AU - Orosei, Roberto AU - Patterson, G Wesley AU - Pettinelli, Elena AU - Plettemeier, Dirk AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53G EP - 01 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299379?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=The+radar+for+icy+moon+exploration+%28RIME%29+on+the+JUICE+mission&rft.au=Bruzzone%2C+Lorenzo%3BPlaut%2C+Jeffrey%3BAlberti%2C+Giovanni%3BBlankenship%2C+Donald+D%3BBovolo%2C+Francesca%3BCampbell%2C+Bruce+A%3BCastelletti%2C+Davide%3BGim%2C+Yonggyu%3BIlisei%2C+Ana+Maria%3BKofman%2C+Wlodek+W%3BKomatsu%2C+Goro%3BMcKinnon%2C+William+B%3BMitri%2C+Giuseppe%3BMoussessian%2C+Alina%3BNotarnicola%2C+Claudia%3BOrosei%2C+Roberto%3BPatterson%2C+G+Wesley%3BPettinelli%2C+Elena%3BPlettemeier%2C+Dirk%3BAnonymous&rft.aulast=Bruzzone&rft.aufirst=Lorenzo&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Earth's Colorado Plateau and Loess Plateau (Ordos Basin) comparing with Mars' Thaumasia Plateau; evidence of ancient Martian lithospheric mobility AN - 1849299322; 2016-105690 AB - We have identified a terrestrial counterpart of the Colorado Plateau, western United States, called the Loess Plateau (including the Ordos Basin referred to hereafter as LPOB) based on size, shape, and spatial arrangement of landforms. LPOB is located to the west-southwest of Beijing China, and northeast of the Himalayas. Both the Colorado Plateau and LPOB display depressed central parts, rift systems along their southeastern margins, mountainous terrains along their margins, and expansive plains to their east. The Thaumasia Plateau of Mars also displays such features in a similar spatial arrangement. This includes Basin & Range-like terrain to the southwest, similar to the Colorado Plateau, and expansive plains to the east. Both the Colorado Plateau and LPOB occur among highly deformed terrains that have resulted from plate collision, subduction, major crustal shortening, contractional, extensional, and transtensional tectonism, basin formation, and magmatic upwelling and associated emplacement of both mafic and felsic rocks. At the meeting, we will detail the similarities among the Colorado Plateau, LPOB, and the Thaumasia Plateau, and make a case for why the latter may mark ancient lithospheric mobility with similarities to Earth's plate tectonics. JF - American Geophysical Union Fall Meeting AU - Dohm, James M AU - Anderson, Robert C AU - Komatsu, Goro AU - Baker, Victor R AU - Maruyama, Shigenori AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P31A EP - 2047 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849299322?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Earth%27s+Colorado+Plateau+and+Loess+Plateau+%28Ordos+Basin%29+comparing+with+Mars%27+Thaumasia+Plateau%3B+evidence+of+ancient+Martian+lithospheric+mobility&rft.au=Dohm%2C+James+M%3BAnderson%2C+Robert+C%3BKomatsu%2C+Goro%3BBaker%2C+Victor+R%3BMaruyama%2C+Shigenori%3BAnonymous&rft.aulast=Dohm&rft.aufirst=James&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - High-resolution Ceres HAMO atlas derived from dawn FC images AN - 1849298673; 2016-105863 AB - Introduction: NASA's Dawn spacecraft will orbit the dwarf planet Ceres in August and September 2015 in HAMO (High Altitude Mapping Orbit) with an altitude of about 1,500 km to characterize for instance the geology, topography, and shape of Ceres before it will be transferred to the lowest orbit. One of the major goals of this mission phase is the global mapping of Ceres. Data: The Dawn mission is equipped with a framing camera (FC). The framing camera will take about 2600 clear filter images with a resolution of about 120 m/pixel and different viewing angles and different illumination conditions. Data Processing: The first step of the processing chain towards the cartographic products is to ortho-rectify the images to the proper scale and map projection type. This process requires detailed information of the Dawn orbit and attitude data and of the topography of the target. Both, improved orientation and high-resolution shape models, are provided by stereo processing of the HAMO dataset. Ceres' HAMO shape model is used for the calculation of the ray intersection points while the map projection itself will be done onto a reference sphere for Ceres. The final step is the controlled mosaicking of all nadir images to a global mosaic of Ceres, the so called basemap. Ceres map tiles: The Ceres atlas will be produced in a scale of 1:750,000 and will consist of 15 tiles that conform to the quadrangle schema for small planets and medium size Icy satellites. A map scale of 1:750,000 guarantees a mapping at the highest available Dawn resolution in HAMO. Nomenclature: The Dawn team proposed to the International Astronomical Union (IAU) to use the names of gods and goddesses of agriculture and vegetation from world mythology as names for the craters. This proposal was accepted by the IAU and the team proposed names for geological features to the IAU based on the HAMO mosaic. These feature names will be applied to the map tiles. JF - American Geophysical Union Fall Meeting AU - Roatsch, Thomas AU - Kersten, Elke AU - Matz, Klaus-Dieter AU - Preusker, Frank AU - Scholten, Frank AU - Jaumann, Ralf AU - Raymond, Carol A AU - Russell, C T AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53E EP - 2166 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298673?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=High-resolution+Ceres+HAMO+atlas+derived+from+dawn+FC+images&rft.au=Roatsch%2C+Thomas%3BKersten%2C+Elke%3BMatz%2C+Klaus-Dieter%3BPreusker%2C+Frank%3BScholten%2C+Frank%3BJaumann%2C+Ralf%3BRaymond%2C+Carol+A%3BRussell%2C+C+T%3BAnonymous&rft.aulast=Roatsch&rft.aufirst=Thomas&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Salts as water ice cloud nuclei on Mars AN - 1849298648; 2016-105625 AB - In recent years, observations of the Martian surface have indicated the presence of chlorine-bearing minerals, including perchlorates, on the surface of Mars. These salt-bearing minerals would potentially be source material for dust lofted from the surface into the Martian atmosphere, thus providing potential nucleation sites for water ice clouds. Considering that salts play an important role in cloud formation on Earth, it is important to have a better understanding of how salt may affect nucleation processes under Mars-like conditions. We perform laboratory experiments to examine water ice nucleation onto salt substrates. We use a vacuum chamber that simulates the temperatures and pressures observed of the Martian atmosphere. Using infrared spectroscopy we measure the onset of nucleation and calculate the temperature-dependent critical saturation ratio (Scrit) for water ice nucleation onto salts, specifically sodium chloride and sodium perchlorate. Preliminary results of Scrit values for water ice nucleation on sodium chloride show a negative temperature dependence, as did other substrates from previous experiments. Values of Scrit are useful for understanding the realistic conditions under which water ice clouds may form on Mars, and can be used in climate models simulating clouds on Mars. JF - American Geophysical Union Fall Meeting AU - Santiago-Materese, Delia AU - Chuang, Patrick Y AU - Iraci, Laura T AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P22A EP - 06 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298648?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Salts+as+water+ice+cloud+nuclei+on+Mars&rft.au=Santiago-Materese%2C+Delia%3BChuang%2C+Patrick+Y%3BIraci%2C+Laura+T%3BAnonymous&rft.aulast=Santiago-Materese&rft.aufirst=Delia&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Behavior and stability of ground ice on Ceres; initial clues from dawn AN - 1849298639; 2016-105885 AB - Models of the historical evolution of Ceres [1] and recent observations of surface geomorphology by the Dawn spacecraft [2] suggest a crust with a substantial fraction of water ice. However, clear spectral detections of ice are absent indicating that the uppermost material is dry. Further constraints on near surface ice come from detections of water vapor around Ceres by the Herschel telescope [3], which indicate production rates of 10 (super 26) molecules per second. Here we build on the pioneering work of [4] and examine ground ice stability with the benefit of these new observations as well as accurate pole-vector determinations by Dawn. We model surface and subsurface temperatures on Ceres by balancing surface insolation, thermal emission and conduction to the subsurface. We estimate ice loss rates for both surface ice and ice covered with a low-thermal-inertia sublimation lag. Dawn observations show no large high-albedo regions indicating pure surface ice. In the case where pore-filling ice (50% ice by volume) extends to the surface, average loss rates range from almost zero (mm/Gyr) at the poles to several decimeters per year at the equator. These loss rates are suppressed by 2-3 orders of magnitude when this pore-filling ice is covered by even a few centimeters of dry sublimation lag, which is expected to form on geologically short timescales. Assuming negligible internal heat flux, we estimate the outgassing of water molecules expected from buried ice at all latitudes and in combination with previous work [5,6] find that the observations of [3] cannot be due to global sublimation of buried ice. Dawn observations also show the presence of small-scale high-albedo spots. Our models show that, if icy, the most prominent of these (in Occator crater) loses approximately 2 cm/yr. Suggestively, the area and sublimation rates of the Occator bright spots match the observed vapor production rates of [3]. However, these high loss rates are difficult to reconcile with long-term spot persistence without a source of resupply. Continued monitoring by Dawn over the coming months in the high- and low-altitude mapping orbits will test for changes. [1] McCord and Sotin, J. Geophys. Res., 2005. [2] Schmidt et al., this conference. [3] Kuppers et al., Nature, 2014. [4] Fanale and Salvail, Icarus, 1989. [5] Schorghofer, Ast. J. 2008. [6] Schorghofer, LPSC 2015. JF - American Geophysical Union Fall Meeting AU - Byrne, Shane AU - Landis, Margaret E AU - Schorghofer, Norbert AU - Schmidt, Britney E AU - Raymond, Carol A AU - Russell, Christopher T AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53E EP - 2188 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298639?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Behavior+and+stability+of+ground+ice+on+Ceres%3B+initial+clues+from+dawn&rft.au=Byrne%2C+Shane%3BLandis%2C+Margaret+E%3BSchorghofer%2C+Norbert%3BSchmidt%2C+Britney+E%3BRaymond%2C+Carol+A%3BRussell%2C+Christopher+T%3BAnonymous&rft.aulast=Byrne&rft.aufirst=Shane&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Charon's color; a view from New Horizon ralph/multispectral visible imaging camera AN - 1849298626; 2016-105910 AB - The Multispectral Visible Imaging Camera (MVIC; Reuter et al., 2008) is part of Ralph, an instrument on NASA's New Horizons spacecraft. MVIC is the color 'eyes' of New Horizons, observing objects using five bands from blue to infrared wavelengths. MVIC's images of Charon show it to be an intriguing place, a far cry from the grey heavily cratered world once postulated. Rather Charon is observed to have large surface areas free of craters, and a northern polar region that is much redder than its surroundings. This talk will describe these initial results in more detail, along with Charon's global geological color variations to put these results into their wider context. Finally possible surface coloration mechanisms due to global processes and/or seasonal cycles will be discussed. JF - American Geophysical Union Fall Meeting AU - Olkin, Catherine AU - Howett, Carly AU - Grundy, William M AU - Parker, Alex Harrison AU - Ennico Smith, Kimberly AU - Stern, S Alan AU - Binzel, Richard P AU - Cook, Jason Campbell AU - Cruikshank, Dale P AU - Dalle Ore, Christina AU - Earle, Alissa M AU - Jennings, Donald E AU - Linscott, Ivan AU - Lunsford, Allen AU - Parker, Joel W AU - Protopapa, Silvia AU - Reuter, Dennis AU - Singer, Kelsi N AU - Spencer, John R AU - Tsang, Constantine AU - Verbiscer, Anne AU - Weaver, Harold A, Jr AU - Young, Leslie Ann AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P54A EP - 03 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298626?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Charon%27s+color%3B+a+view+from+New+Horizon+ralph%2Fmultispectral+visible+imaging+camera&rft.au=Olkin%2C+Catherine%3BHowett%2C+Carly%3BGrundy%2C+William+M%3BParker%2C+Alex+Harrison%3BEnnico+Smith%2C+Kimberly%3BStern%2C+S+Alan%3BBinzel%2C+Richard+P%3BCook%2C+Jason+Campbell%3BCruikshank%2C+Dale+P%3BDalle+Ore%2C+Christina%3BEarle%2C+Alissa+M%3BJennings%2C+Donald+E%3BLinscott%2C+Ivan%3BLunsford%2C+Allen%3BParker%2C+Joel+W%3BProtopapa%2C+Silvia%3BReuter%2C+Dennis%3BSinger%2C+Kelsi+N%3BSpencer%2C+John+R%3BTsang%2C+Constantine%3BVerbiscer%2C+Anne%3BWeaver%2C+Harold+A%2C+Jr%3BYoung%2C+Leslie+Ann%3BAnonymous&rft.aulast=Olkin&rft.aufirst=Catherine&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Pyrite stability under Venus surface conditions AN - 1849298601; 2016-105628 AB - Radar mapping of the surface of Venus shows areas of high reflectivity in the Venusian highlands, increasing to 0.35+ or -0.04 to 0.43+ or -0.05 in the highlands from the planetary average of 0.14+ or -0.03. Iron sulfides, specifically pyrite (FeS (sub 2) ), can explain the observed high reflectivity. However, several studies suggest that pyrite is not stable under Venusian conditions and is destroyed on geologic timescales. To test the stability of pyrite on the Venusian surface, pyrite was heated in the Venus simulation chamber at NASA Goddard Space Flight Center to average Venusian surface conditions, and separately to highland conditions under an atmosphere of pure CO (sub 2) and separately under an atmosphere of 96.5% CO (sub 2) , 3.5% N (sub 2) and 150 ppm SO (sub 2) . After each run, the samples were weighed and analyzed using X-Ray Diffraction (XRD) to identify possible phase changes and determine the stability of pyrite under Venusian surface conditions. Under a pure CO (sub 2) atmosphere, the Fe in pyrite oxidizes to form hematite which is more stable at higher temperatures corresponding to the Venusian lowlands. Magnetite is the primary iron oxide that forms at lower temperatures corresponding to the radar-bright highlands. Our experiments also showed that the presence of atmospheric SO (sub 2) inhibits the oxidation of pyrite, increasing its stability under Venusian conditions, especially those corresponding to the highlands. This indicates that the relatively high level of SO (sub 2) in the Venusian atmosphere is key to the stability of pyrite, making it a possible candidate for the bright radar signal in the Venusian highlands. JF - American Geophysical Union Fall Meeting AU - Kohler, Erika AU - Craig, Patricia AU - Port, Sara AU - Chevrier, Vincent AU - Johnson, Natasha M AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P23A EP - 2110 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298601?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Pyrite+stability+under+Venus+surface+conditions&rft.au=Kohler%2C+Erika%3BCraig%2C+Patricia%3BPort%2C+Sara%3BChevrier%2C+Vincent%3BJohnson%2C+Natasha+M%3BAnonymous&rft.aulast=Kohler&rft.aufirst=Erika&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Widespread plains volcanism on Mercury ended by 3.6 Ga AN - 1849298593; 2016-105803 AB - The largest volcanic plains deposits on Mercury are situated in its northern hemisphere and include the extensive northern smooth plains and the Caloris interior plains. Crater size-frequency analyses have shown that both deposits were emplaced around 3.8 Ga, for any of the published model production function (MPF) chronologies for impact crater formation on Mercury. The largest volcanic deposit in the southern hemisphere, the Rembrandt interior plains, has a model age of approximately 3.7 Ga. To test the hypothesis that all major volcanic smooth plains on Mercury were emplaced at about the same time, we determined crater size-frequency distributions for nine additional deposits. The diameters of craters that superpose the smooth plains at each site were measured with CraterTools, yielding crater areal densities in terms of N(10), the number of craters > or =10 km in diameter per 106 km (super 2) area. Our crater density measurements span N(10) values of 29-146, a range that encompasses corresponding values for the larger areas of smooth plains. With CraterStats, we fit our data (for craters > or =4 km in diameter) to the MPF chronologies of Le Feuvre and Wieczorek. For porous scaling, the model ages of all nine sites span a narrow window. Non-porous scaling fails to match the crater size-frequency distributions. We show that widespread plains volcanism, likely the primary process by which Mercury's crust developed, had ended by 3.6 Ga. Younger volcanic deposits have been identified on the planet, but only within impact structures and at volumes much less than the smallest deposit considered here. Superposition relations between shortening landforms and craters on Mercury indicate that global contraction in response to interior cooling was underway by approximately 3.6 Ga. The cessation of widespread plains volcanism on Mercury may therefore reflect the onset of a stress state within the planet's lithosphere that inhibited magma ascent. Conversely, mantle thermochemical evolution models indicate that magma generation may have been voluminous only until approximately 3.5 Ga. Whatever the cause, the main building phase of Mercury's crust ended within the first 20% of the age of the planet, with only small-scale, explosive volcanism enduring beyond that time. JF - American Geophysical Union Fall Meeting AU - Byrne, Paul K AU - Ostrach, Lillian Rose AU - Fassett, Caleb AU - Chapman, Clark R AU - Evans, Alexander J AU - Klimczak, Christian AU - Banks, Maria E AU - Head, James W, III AU - Solomon, Sean C AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53A EP - 2100 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298593?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Widespread+plains+volcanism+on+Mercury+ended+by+3.6+Ga&rft.au=Byrne%2C+Paul+K%3BOstrach%2C+Lillian+Rose%3BFassett%2C+Caleb%3BChapman%2C+Clark+R%3BEvans%2C+Alexander+J%3BKlimczak%2C+Christian%3BBanks%2C+Maria+E%3BHead%2C+James+W%2C+III%3BSolomon%2C+Sean+C%3BAnonymous&rft.aulast=Byrne&rft.aufirst=Paul&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Preliminary geological map of the Ac-H-3 Dantu quadrangle of Ceres; an integrated mapping study using Dawn spacecraft data AN - 1849298591; 2016-105867 AB - We are using Dawn spacecraft data to create a geologic map of the Ac-H-3 Dantu Quadrangle of dwarf planet Ceres. The quadrangle is located between 21-66 degrees N and 90-180 degrees E and includes the following dominant features: 1) the central and northern portion of the 124.6 km diameter impact crater Dantu; 2) crater chains and/or grooves oriented in an east-west direction; 3) a portion of the 84 km diameter impact crater Gaue, whose ejecta blanket covers the SW corner of the quadrangle. Dantu is a complex impact crater showing terraces, a central pit structure, concentric fractures, and smooth deposits on the crater floor. The materials interpreted to be ejecta deposits of Dantu show low crater frequencies and dominate the southern half of the quadrangle. These deposits appear to be relatively bright and correspond to parts of the #2 high albedo region observed by (1) with the HST indicating different composition and/or material properties than the surroundings. The east-west striking crater chains and grooves are mainly found in the southern half of the quadrangle. They seem to be connected to the crater chains found in Ac-H-4 Ezinu, the neighboring quadrangle to the east, and are potentially related to ballistic ejecta emplacement. Further work will be focused on Dantu crater and its complex interior and exterior. The current geologic map is based on Framing Camera (FC) image mosaics derived from Approach ( approximately 1.3 km/px) and Survey ( approximately 400 m/px) data as well as digital terrain models (DTMs) derived from stereo imagery. In the course of the mission, we will incorporate mosaics from the High Altitude Mapping Orbit ( approximately 140 m/px, Fall 2015) and Low Altitude Mapping Orbit ( approximately 35 m/px, Spring 2016) phases. JF - American Geophysical Union Fall Meeting AU - Kneissl, Thomas AU - Schmedemann, Nico AU - Neesemann, Adrian AU - Williams, David A AU - Crown, David A AU - Mest, Scott C AU - Buczkowski, Debra AU - Scully, Jennifer E C AU - Frigeri, Alessandro AU - Ruesch, Ottaviano AU - Hiesinger, Harald AU - Walter, Sebastian H G AU - Jaumann, Ralf AU - Roatsch, Thomas AU - Preusker, Frank AU - Nathues, Andreas AU - Platz, Thomas AU - Hoffmann, Martin AU - Schaefer, Michael AU - De Sanctis, Maria Cristina AU - Raymond, Carol A AU - Russell, Christopher T AU - Kersten, Elke AU - Nass, Andrea AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53E EP - 2170 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298591?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Preliminary+geological+map+of+the+Ac-H-3+Dantu+quadrangle+of+Ceres%3B+an+integrated+mapping+study+using+Dawn+spacecraft+data&rft.au=Kneissl%2C+Thomas%3BSchmedemann%2C+Nico%3BNeesemann%2C+Adrian%3BWilliams%2C+David+A%3BCrown%2C+David+A%3BMest%2C+Scott+C%3BBuczkowski%2C+Debra%3BScully%2C+Jennifer+E+C%3BFrigeri%2C+Alessandro%3BRuesch%2C+Ottaviano%3BHiesinger%2C+Harald%3BWalter%2C+Sebastian+H+G%3BJaumann%2C+Ralf%3BRoatsch%2C+Thomas%3BPreusker%2C+Frank%3BNathues%2C+Andreas%3BPlatz%2C+Thomas%3BHoffmann%2C+Martin%3BSchaefer%2C+Michael%3BDe+Sanctis%2C+Maria+Cristina%3BRaymond%2C+Carol+A%3BRussell%2C+Christopher+T%3BKersten%2C+Elke%3BNass%2C+Andrea%3BAnonymous&rft.aulast=Kneissl&rft.aufirst=Thomas&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Preliminary geological map of the Ac-H-6 Haulani quadrangle of Ceres; an integrated mapping study using Dawn spacecraft data AN - 1849298588; 2016-105870 AB - We used geologic mapping applied to Dawn spacecraft data as a tool to understand the geologic history of the Ac-H-6 Haulani Quadrangle of dwarf planet Ceres. This region, located between 22 degrees S-22 degrees N and 0-72 degrees E, is dominated by the 31 km diameter Haulani impact crater in the west. Haulani shows a bright interior and is surrounded by bright ejecta, which preferentially extends westward. Photometrically corrected data show that small rays radially extend over several hundred kilometers to the west. A heavily cratered elevated plain extends around the equator to the NE, interrupted by a trough in the east. This plain seems to be part of a dominant geological unit crossing Ceres. A crater in the southern part of the plain reveals possible flow features extending to the NW, maybe of volcanic origin. The quadrangle is also affected by many impact craters with modified floors: smooth infilling, melted material, central peaks, possible domes and mass wasting. Some candidate volcanic domes occur in the northwestern and southern parts of the quadrangle. Linear depressions cross the quadrangle in W-E direction, with a slight tendency to NW. A set of small linear depressions close to each other are found in the SE. They are orientated in NW direction crossed by one in WE direction. At the time of writing, geologic mapping was performed on Framing Camera (FC) mosaics from the Approach (1.3 km/px) and Survey (415 m/px) orbits, including grayscale and color images and digital terrain models derived from stereo images. In Fall 2015 images from the High Altitude Mapping Orbit (140 m/px) will be available to refine the mapping, followed by Low Altitude Mapping Orbit (35 m/px) images in January 2016. The key goal of the ongoing mapping is to analyze, whether the origin of the bright material of the Haulani crater is endogenic or exogenic. Additionally, domes and linear depressions could be of volcanic and volcanic-tectonic origin. This work is supported by the HGF Postdoc Program. JF - American Geophysical Union Fall Meeting AU - Roatsch, Thomas AU - Krohn, Katrin AU - Jaumann, Ralf AU - Nass, Andrea AU - Otto, Katharina AU - Schroeder, Stefanus AU - Williams, David A AU - Buczkowski, Debra AU - Mest, Scott C AU - Scully, Jennifer E C AU - von der Gathen, Isabel AU - Kersten, Elke AU - Matz, Klaus-Dieter AU - Pieters, Carle M AU - Preusker, Frank AU - De Sanctis, Maria Cristina AU - Schulzeck, Franziska AU - Stephan, Katrin AU - Tosi, Federico AU - Wagner, Roland J AU - Zambon, Francesca AU - Russell, Christopher AU - Raymond, Carol A AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53E EP - 2173 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298588?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Preliminary+geological+map+of+the+Ac-H-6+Haulani+quadrangle+of+Ceres%3B+an+integrated+mapping+study+using+Dawn+spacecraft+data&rft.au=Roatsch%2C+Thomas%3BKrohn%2C+Katrin%3BJaumann%2C+Ralf%3BNass%2C+Andrea%3BOtto%2C+Katharina%3BSchroeder%2C+Stefanus%3BWilliams%2C+David+A%3BBuczkowski%2C+Debra%3BMest%2C+Scott+C%3BScully%2C+Jennifer+E+C%3Bvon+der+Gathen%2C+Isabel%3BKersten%2C+Elke%3BMatz%2C+Klaus-Dieter%3BPieters%2C+Carle+M%3BPreusker%2C+Frank%3BDe+Sanctis%2C+Maria+Cristina%3BSchulzeck%2C+Franziska%3BStephan%2C+Katrin%3BTosi%2C+Federico%3BWagner%2C+Roland+J%3BZambon%2C+Francesca%3BRussell%2C+Christopher%3BRaymond%2C+Carol+A%3BAnonymous&rft.aulast=Roatsch&rft.aufirst=Thomas&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Regional and local temperature maps of dwarf planet ceres from dawn/VIR AN - 1849298584; 2016-105881 AB - Since the beginning of 2015, the Visible InfraRed (VIR) mapping spectrometer onboard the NASA Dawn mission has obtained hyperspectral images of Ceres, with improving spatial resolution. VIR operates in the overall spectral range 0.25-5.1 mu m, with the main goal of inferring the surface composition of the target in its uppermost layer, as thick as tens of microns. Taking advantage of the wavelength range longward of 3 mu m, VIR can be used as a thermal mapper, i.e. as a tool to derive thermal images and spatially-resolved temperature maps. To do this, the VIR team uses a Bayesian approach to nonlinear inversion that was extensively applied to the Vesta dataset earlier. Already in February 2015, VIR had the chance to acquire data with a spatial resolution of approximately 11 km/px. Those temperature images revealed that a spot of high-albedo (bright) material, highlighted by the Hubble Space Telescope (HST) earlier and recently associated with the crater Haulani, was cooler than surrounding regions seen under similar solar illumination, whereas the brightest spots on Ceres, in the crater Occator, did not display any thermal contrast. The following Survey phase yielded hyperspectral coverage of Ceres at approximately 1.3 km/px, and the High Altitude Mapping Orbit (HAMO) phase starting in mid-August 2015 is expected to provide VIR data with a resolution of approximately 0.4 km/px. These datasets allow derivation of regional and local temperature maps as well as the study of thermal anomalies at those spatial scales. Due to the low overall thermal inertia of Ceres, the surface temperature is essentially dominated by the instantaneous value of the solar incidence angle. Small values of this angle result in high surface temperatures, and, unlike Vesta, the low obliquity of Ceres ( approximately 4 degrees ) does not result in observable seasonal effects for a given location on the surface. However, different responses to insolation as observed at the local scale may be indicative of differences in density/porosity and thermal conductivity, which is key to constrain thermo-physical modeling. JF - American Geophysical Union Fall Meeting AU - Zambon, Francesca AU - Tosi, Federico AU - Capria, Maria Teresa AU - Carrorro, Filippo Giacomo AU - Ciarniello, Mauro AU - De Sanctis, Maria Cristina AU - Longobardo, Andrea AU - Raponi, Andrea AU - Ammannito, Eleonora AU - Combe, Jean Philippe AU - Hiesinger, Harald AU - Li, Jian-Yang AU - McFadden, Lucy A AU - Schorghofer, Norbert AU - Schroeder, Stefan AU - Stephan, Katrin AU - Rayman, Marc AU - Raymond, Carol A AU - Russell, C T AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53E EP - 2184 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298584?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Regional+and+local+temperature+maps+of+dwarf+planet+ceres+from+dawn%2FVIR&rft.au=Zambon%2C+Francesca%3BTosi%2C+Federico%3BCapria%2C+Maria+Teresa%3BCarrorro%2C+Filippo+Giacomo%3BCiarniello%2C+Mauro%3BDe+Sanctis%2C+Maria+Cristina%3BLongobardo%2C+Andrea%3BRaponi%2C+Andrea%3BAmmannito%2C+Eleonora%3BCombe%2C+Jean+Philippe%3BHiesinger%2C+Harald%3BLi%2C+Jian-Yang%3BMcFadden%2C+Lucy+A%3BSchorghofer%2C+Norbert%3BSchroeder%2C+Stefan%3BStephan%2C+Katrin%3BRayman%2C+Marc%3BRaymond%2C+Carol+A%3BRussell%2C+C+T%3BAnonymous&rft.aulast=Zambon&rft.aufirst=Francesca&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Rapid and direct screening of H:C ratio in Archean kerogen via microRaman spectroscopy AN - 1849298581; 2016-105685 AB - Rapid evaluation of the preservation of biosignatures in ancient kerogens is essential for the evaluation of the usability of Earth analogues as proxies of Martian geological materials. No single, non-destructive and non-invasive technique currently exists to rapidly determine such state of preservation of the organic matter in relation to its geological and mineral environment. Due to its non-invasive nature, microRaman spectroscopy is emerging as a candidate technique for the qualitative determination maturity of organic matter, by correlating Raman spectral features and aromatic carbon cluster size. Here we will present a novel quantitative method in which before-neglected Raman spectral features are correlated directly and with excellent accuracy with the H:C ratio. In addition to providing a chemical justification of the found direct correlation, we will show its applicability and predictive capabilities in evaluating H:C in Archean kerogens. This novel method opens new opportunities for the use of Raman spectroscopy and mapping. This includes the non-invasively determination of kerogen preservation and microscale chemical diversity within a particular Earth analogue, to be potentially extended to evaluate Raman spectra acquired directly on Mars. JF - American Geophysical Union Fall Meeting AU - Ferralis, Nicola AU - Matys, Emily D AU - Allwood, Abigail C AU - Knoll, Andrew H AU - Summons, Roger E AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P31A EP - 2042 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298581?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Rapid+and+direct+screening+of+H%3AC+ratio+in+Archean+kerogen+via+microRaman+spectroscopy&rft.au=Ferralis%2C+Nicola%3BMatys%2C+Emily+D%3BAllwood%2C+Abigail+C%3BKnoll%2C+Andrew+H%3BSummons%2C+Roger+E%3BAnonymous&rft.aulast=Ferralis&rft.aufirst=Nicola&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Chemistry of the materials above and below an unconformity between the Murray and Stimson Formations in Gale Crater, Mars AN - 1849298550; 2016-105896 AB - MSL began investigating a contact between Murray formation, (fine grained lake deposits) and the younger Stimson formation at Marias Pass in May 2015, on the lower slopes of Mt. Sharp. Images show that the Murray formation, with numerous calcium sulfate veins compared to the Stimson, is truncated at an erosional contact. MAHLI images show a white layer a few mm thick at the contact that might be calcium sulfate. The lowermost beds of the Stimson unit in the Missoula area comprise horizontally laminated or cross-laminated sandstones. The sandstones are poorly sorted with floating granules and very coarse sand grains set in a fine- medium-grained sand 'matrix'. This material directly above the contact is a resistant, basal ledge-forming layer that also forms numerous blocks of float on top of the eroded Murray. This basal layer contains light toned fragments, possibly calcium sulfate, eroded from the Murray. The poor sorting and presence of sub-angular grains, together with the absence of preferential sorting into size sorted layers would seem to rule out eolian processes for the lowermost beds of the Stimson and suggest fluvial processes were responsible for deposition of these beds. For chemostratigraphy, the distance of each ChemCam or APXS observation above or below the contact was determined from images and the NavCam stereo mesh. The top of the Murray near the Missoula area is variable in composition, and additional analyses are planned to determine if weathering occurred at the eroded surface. Above the contact, the lowest 2 cm of the resistant slab is higher in SiO (sub 2) , and lower in Al (sub 2) O (sub 3) , K (sub 2) O and Na (sub 2) O, relative to other Stimson analyses. In a few points with low totals, there is a correlation between Ca and missing components (presumed to be mostly S). These points could be connected to calcium sulfate in the form of cements and/or incorporation of eroded clasts of Murray vein materials. JF - American Geophysical Union Fall Meeting AU - Newsom, Horton E AU - Belgacem, Ines AU - Wiens, Roger C AU - Frydenvang, Jens AU - Gasnault, Olivier AU - Maurice, Sylvestre AU - Gasda, Patrick James AU - Clegg, Samuel M AU - Cousin, Agnes AU - Rapin, William AU - Jackson, Ryan AU - Vaci, Zoltan AU - Ha, Beth AU - Blaney, Diana L AU - Bridges, Nathan AU - Francis, Raymond AU - Payre, Valerie AU - Gupta, Sanjeev AU - Banham, Steven AU - Schroeder, Jeff AU - Calef, Fred J, III AU - Edgett, Kenneth S AU - Fey, Deirdra M AU - Fisk, Martin R AU - Gellert, Ralf AU - Thompson, Lucy M AU - Perrett, Glynis M AU - Grotzinger, John P AU - Rubin, David M AU - Williams, Amy AU - Kah, Linda C AU - Kronyak, Rachel Emily AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53F EP - 06 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298550?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Chemistry+of+the+materials+above+and+below+an+unconformity+between+the+Murray+and+Stimson+Formations+in+Gale+Crater%2C+Mars&rft.au=Newsom%2C+Horton+E%3BBelgacem%2C+Ines%3BWiens%2C+Roger+C%3BFrydenvang%2C+Jens%3BGasnault%2C+Olivier%3BMaurice%2C+Sylvestre%3BGasda%2C+Patrick+James%3BClegg%2C+Samuel+M%3BCousin%2C+Agnes%3BRapin%2C+William%3BJackson%2C+Ryan%3BVaci%2C+Zoltan%3BHa%2C+Beth%3BBlaney%2C+Diana+L%3BBridges%2C+Nathan%3BFrancis%2C+Raymond%3BPayre%2C+Valerie%3BGupta%2C+Sanjeev%3BBanham%2C+Steven%3BSchroeder%2C+Jeff%3BCalef%2C+Fred+J%2C+III%3BEdgett%2C+Kenneth+S%3BFey%2C+Deirdra+M%3BFisk%2C+Martin+R%3BGellert%2C+Ralf%3BThompson%2C+Lucy+M%3BPerrett%2C+Glynis+M%3BGrotzinger%2C+John+P%3BRubin%2C+David+M%3BWilliams%2C+Amy%3BKah%2C+Linda+C%3BKronyak%2C+Rachel+Emily%3BAnonymous&rft.aulast=Newsom&rft.aufirst=Horton&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Chemo-stratigraphy in the Murray Formation using ChemCam AN - 1849298548; 2016-105893 AB - Curiosity has completed a detailed chemo-stratigraphy analysis at the Pahrump exposure of the Murray formation. In total >570 chemical measurements and supporting remote micro images to classify texturally were collected. Chemical trends with both stratigraphic position and with texture were evaluated. From these data emerges a complex aqueous history where sediments have interacted with fluids with variable chemistry in distinct episodes. The ChemCam data collected at the nearby "Garden City" (GC) vein complex provides constraints on the chemical evolution of the Pahrump. GC is thought be stratigraphically above the Pahrump outcrop. Fluids producing the veins likely also migrated through the Pahrump sediments. Multiple episodes of fluids are evident at GC, forming distinct Ca sulfate, F-rich, enhanced MgO, and FeO-rich veins. These different fluid chemistries could be the result of distinct fluids migrating through the section from a distance with a pre-established chemical signature, fluids locally evolved from water rock interactions, or both. Texturally rocks have been classified into two distinct categories: fine grained or as cross-bedded sandstones. The sandstones have significantly lower SiO (sub 2) , Al (sub 2) O (sub 3) , and K (sub 2) O and higher FeO, and CaO. Fine grained rocks have further been sub-classified as resistant and recessive with other textural features such as laminations and pits noted. The strongest chemical trend in the fine-grained sandstones shows enhancements in MgO and FeO in erosion-resistant materials compared to fine grained recessive units, suggesting that increased abundance of Mg- and/or iron-rich cements may provide additional strength. The MgO and FeO variations with texture are independent of stratigraphic locations (e.g resistant material at both the bottom and top of the outcrop both are enhanced in MgO and FeO). The presence of the GC MgO and FeO rich veins provides additional evidence for fluids rich in these elements were present in the outcrop. Other elemental trends results including SiO (sub 2) , Al (sub 2) O (sub 3) , K (sub 2) O and Na (sub 2) O will be explored in addition to key trace element signatures such as Li, Cr and F to understand the chemical evolution of the outcrop. JF - American Geophysical Union Fall Meeting AU - Blaney, Diana L AU - Anderson, Ryan B AU - Bridges, Nathan AU - Bridges, John AU - Calef, Fred J, III AU - Clegg, Samuel M AU - Le Deit, Laetitia AU - Fisk, Martin R AU - Forni, Olivier AU - Gasnault, Olivier AU - Kah, Linda C AU - Kronyak, Rachel Emily AU - Lanza, Nina AU - Lasue, Jeremie AU - Mangold, Nicolas AU - Maurice, Sylvestre AU - Milliken, Ralph AU - Ming, Douglas W AU - Nachon, Marion AU - Newsom, Horton E AU - Rapin, William AU - Stack, Kathryn AU - Sumner, Dawn Y AU - Wiens, Roger C AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53F EP - 03 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298548?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Chemo-stratigraphy+in+the+Murray+Formation+using+ChemCam&rft.au=Blaney%2C+Diana+L%3BAnderson%2C+Ryan+B%3BBridges%2C+Nathan%3BBridges%2C+John%3BCalef%2C+Fred+J%2C+III%3BClegg%2C+Samuel+M%3BLe+Deit%2C+Laetitia%3BFisk%2C+Martin+R%3BForni%2C+Olivier%3BGasnault%2C+Olivier%3BKah%2C+Linda+C%3BKronyak%2C+Rachel+Emily%3BLanza%2C+Nina%3BLasue%2C+Jeremie%3BMangold%2C+Nicolas%3BMaurice%2C+Sylvestre%3BMilliken%2C+Ralph%3BMing%2C+Douglas+W%3BNachon%2C+Marion%3BNewsom%2C+Horton+E%3BRapin%2C+William%3BStack%2C+Kathryn%3BSumner%2C+Dawn+Y%3BWiens%2C+Roger+C%3BAnonymous&rft.aulast=Blaney&rft.aufirst=Diana&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Ca-Mg carbonate cements in ophiolite-hosted creek waters of the Del Puerto ophiolite, CA, and their potential significance as a planetary biosignature AN - 1849298467; 2016-105944 AB - Serpentinization, the reaction at moderate pressure and temperature of water with olivine and pyroxene that are common in basalts and ultramafic rocks, results in the formation of alkaline fluids and the precipitation of a variety of secondary minerals. Terrestrial localities where active serpentinization is occurring are ideal Mars analogs for examining the characteristics of an environment that possesses two of the key features that we assume necessary to host life: water and an internally generated energy source. This study focuses on a related but different feature present where active serpentinization is occurring - namely, carbonate cements forming under plain air in the vicinity of Adobe Springs, CA. This site is located in the Del Puerto ophiolite about 150 km ESE of San Francisco, in the Coast Range of California. Two alkaline spring water compositions have been described at the site, a Ca-OH water (which is not currently being emitted by the active springs), and a Mg-CO (sub 3) water. Abundant dolomitic and calcitic carbonate cements are found in the creek drainages near the springs, associated with a diverse microbial community. We conducted a systematic study of the carbonate cements using SEM, EMP, XRD, TEM, and SIMS, focusing on sub-mm variations in texture, mineral chemistry and stable isotope (COH) composition. We compared our measurements with thermodynamic modeling results constrained by chemical analysis of water chemistry from the site and known partition coefficients and stable isotope fractionation factors. The wide range of carbonate compositions and textures observed at the Adobe Springs site suggests that more than one process is involved in their precipitation, including the possibility of microbially mediated dolomite mineralization. These carbonate cements could be a mineralogic biomarker of serpentinization and microbiological processes on Mars and other rocky planets and, therefore, prime targets for future astrobiological investigations. JF - American Geophysical Union Fall Meeting AU - Blank, J G AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract V11A EP - 3049 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298467?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Ca-Mg+carbonate+cements+in+ophiolite-hosted+creek+waters+of+the+Del+Puerto+ophiolite%2C+CA%2C+and+their+potential+significance+as+a+planetary+biosignature&rft.au=Blank%2C+J+G%3BAnonymous&rft.aulast=Blank&rft.aufirst=J&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Preliminary geological map of the Ac-H-2 Coniraya quadrangle of Ceres; an integrated mapping study using Dawn spacecraft data AN - 1849298449; 2016-105865 AB - To better understand the geologic history of dwarf planet Ceres, the surface has been divided into 15 quadrangles that are systematically mapped on the basis of images obtained by NASA's Dawn spacecraft, which began orbiting Ceres in April 2015. We will report on preliminary mapping results for the Ac-H-2 Coniraya Quadrangle based on Framing Camera (FC) mosaics from the Dawn Approach (1.3 km/px) and Survey (415 m/px) orbits. This quadrangle is located between 21-66 degrees N and 0-90 degrees E and is dominated by mostly highly degraded impact craters of diameters between 50 and 200 km and clusters of small- to midsize impact craters. Color data show that this quadrangle is generally darker than most regions of the southern hemisphere. Two prominent impact craters in this quadrangle have been named Coniraya and Gaue crater, respectively. Coniraya is the largest more or less intact impact crater with a diameter of 136 km, centered at 65.8 degrees N/40.5 degrees E. It appears shallow and its crater rim is heavily degraded but still continuous. At the current image resolution, textural differences between the interior and exterior of the crater are not visible. With a diameter of 84 km, Gaue crater appears to be the freshest large impact crater in this quadrangle. It is located at the eastern border of the Coniraya Quadrangle with a small central peak at 30 degrees N/85.7 degrees E. The crater rim is quite sharp and the ejecta blanket can be traced around the crater to a distance of approximately 200 km from the crater center. Most of the crater floor around the central peak is covered by a smooth uniform unit with a lower impact crater population than the surrounding surfaces. Color data show that this smooth unit is darker than the surrounding surfaces. A similar unit can be found on the floor of a complex cluster of 10-56 km diameter craters at 32 degrees N/40 degrees E. With upcoming higher resolution data we will refine our geologic map and will specifically investigate possible formation processes of these smooth units. JF - American Geophysical Union Fall Meeting AU - Hiesinger, Harald AU - Pasckert, Jan Hendrik AU - Williams, David A AU - Crown, David A AU - Mest, Scott C AU - Buczkowski, Debra AU - Schenk, Paul AU - Scully, Jennifer E C AU - Jaumann, Ralf AU - Roatsch, Thomas AU - Preusker, Frank AU - Platz, Thomas AU - Nathues, Andreas AU - Hoffmann, Martin AU - Marchi, Simone AU - De Sanctis, Maria Cristina AU - Russell, Christopher T AU - Raymond, Carol A AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53E EP - 2168 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298449?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Preliminary+geological+map+of+the+Ac-H-2+Coniraya+quadrangle+of+Ceres%3B+an+integrated+mapping+study+using+Dawn+spacecraft+data&rft.au=Hiesinger%2C+Harald%3BPasckert%2C+Jan+Hendrik%3BWilliams%2C+David+A%3BCrown%2C+David+A%3BMest%2C+Scott+C%3BBuczkowski%2C+Debra%3BSchenk%2C+Paul%3BScully%2C+Jennifer+E+C%3BJaumann%2C+Ralf%3BRoatsch%2C+Thomas%3BPreusker%2C+Frank%3BPlatz%2C+Thomas%3BNathues%2C+Andreas%3BHoffmann%2C+Martin%3BMarchi%2C+Simone%3BDe+Sanctis%2C+Maria+Cristina%3BRussell%2C+Christopher+T%3BRaymond%2C+Carol+A%3BAnonymous&rft.aulast=Hiesinger&rft.aufirst=Harald&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - In situ measurement of Kr and Xe in the atmosphere of Mars AN - 1849298446; 2016-105898 AB - The Sample Analysis at Mars (SAM) investigation [1] on NASA's Mars Science Laboratory mission has measured the six stable isotopes of krypton and the nine stable isotopes of xenon from the surface of Mars. Using semi-static mass spectrometry (MS) to measure the Kr, and static MS experiments (first ever on another planet) to measure the xenon, we have obtained isotopic ratios of these heavy noble gas elements with greatly improved precision over the Viking Measurements. The Viking landers detected both Kr and Xe [2] with a reported precision of + or -20%, insufficient for in situ isotope measurement. Using the Viking observation of high (super 129) Xe relative to Earth or to solar wind, Bogard & Johnson [3] and Swindle et al. [4] recognized that Shergottite meteorites may hold trapped Martian atmosphere, from which Swindle's team later reported precise noble gas isotope ratios, solidifying the theory that these meteorites were of martian origin. Our data are in very good agreement with the Swindle et al. [4] analysis, and the isotopic distributions of Kr and Xe in present day Martian atmosphere support the Pepin [5] model of massive hydrodynamic escape of the martian atmosphere early after formation. References: [1] Mahaffy, Paul R., et al. Space Science Revs 170.1-4 (2012): 401-478. [2] Owen, T., et al. Science 194.4271 (1976): 1293-1295. [3] Bogard, D. D. & Johnson, P. (1983) Science, 221: 651-654. [4] Swindle, T. D., M. W. Caffee, and C. M. Hohenberg. Geochim et Cosmochim Acta 50.6 (1986): 1001-1015. [5] Pepin, Robert O. Icarus 111.2 (1994): 289-304. JF - American Geophysical Union Fall Meeting AU - Conrad, Pamela Gales AU - Malespin, Charles AU - Franz, Heather B AU - Trainer, Melissa G AU - Pepin, Robert O AU - Schwenzer, Susanne P AU - Manning, Heidi L AU - Atreya, Sushil K AU - Wong, Michael H AU - Jones, John H AU - Owen, Tobias C AU - Mahaffy, Paul R AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53F EP - 08 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298446?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=In+situ+measurement+of+Kr+and+Xe+in+the+atmosphere+of+Mars&rft.au=Conrad%2C+Pamela+Gales%3BMalespin%2C+Charles%3BFranz%2C+Heather+B%3BTrainer%2C+Melissa+G%3BPepin%2C+Robert+O%3BSchwenzer%2C+Susanne+P%3BManning%2C+Heidi+L%3BAtreya%2C+Sushil+K%3BWong%2C+Michael+H%3BJones%2C+John+H%3BOwen%2C+Tobias+C%3BMahaffy%2C+Paul+R%3BAnonymous&rft.aulast=Conrad&rft.aufirst=Pamela&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Regolith formation rates and evolution from the diviner lunar radiometer AN - 1849298445; 2016-105711 AB - Fragmentation and overturn of lunar surface materials produces a layer of regolith, which increases in thickness through time. Experiments on the lunar surface during the Apollo era, combined with remote sensing, found that the upper 10's of cm of regolith exhibit a rapid increase in density and thermal conductivity with depth. This is interpreted to be the signature of impact gardening, which operates most rapidly in the uppermost layers. Gravity data from the GRAIL mission showed that impacts have also extensively fractured the deeper crust. The breakdown and mixing of crustal materials is therefore a central process to lunar evolution and must be understood in order to interpret compositional information from remote sensing and sample analysis. Recently, thermal infrared data from the Lunar Reconnaissance Orbiter (LRO) Diviner radiometer were used to provide the first remote observational constraints on the rate of ejecta breakdown around craters < 1 Ga (Ghent et al., 2014). Here, we use nighttime regolith temperatures derived from Diviner data to constrain regolith thermal inertia, thickness, and spatial variability. Applied to models, these new data help improve understanding of regolith formation on a variety of geologic units. We will also discuss several anomalous features that merit further investigation. Reference: Ghent, R. R., Hayne, P. O., Bandfield, J. L., Campbell, B. A., Allen, C. C., Carter, L. M., & Paige, D. A. (2014). Constraints on the recent rate of lunar ejecta breakdown and implications for crater ages. Geology, 42(12), 1059-1062. JF - American Geophysical Union Fall Meeting AU - Hayne, Paul Ottinger AU - Ghent, Rebecca R AU - Bandfield, Joshua L AU - Vasavada, Ashwin R AU - Williams, Jean-Pierre AU - Siegler, Matthew A AU - Lucey, Paul G AU - Greenhagen, Benjamin T AU - Elder, Catherine M AU - Paige, David A AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P43F EP - 02 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298445?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Regolith+formation+rates+and+evolution+from+the+diviner+lunar+radiometer&rft.au=Hayne%2C+Paul+Ottinger%3BGhent%2C+Rebecca+R%3BBandfield%2C+Joshua+L%3BVasavada%2C+Ashwin+R%3BWilliams%2C+Jean-Pierre%3BSiegler%2C+Matthew+A%3BLucey%2C+Paul+G%3BGreenhagen%2C+Benjamin+T%3BElder%2C+Catherine+M%3BPaige%2C+David+A%3BAnonymous&rft.aulast=Hayne&rft.aufirst=Paul&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Radar sounding for planetary subsurface exploration; translating the Mars experience to Jupiter's icy moons AN - 1849298440; 2016-105902 AB - Exploration of the subsurface of Mars using radar sounding began with MARSIS (Mars Advanced Radar for Subsurface and Ionospheric Sounding) on Mars Express in 2005 and continued with SHARAD (Shallow Radar) on Mars Reconnaissance Orbiter in 2006. These instruments have been operating continuously since, providing a rich legacy of science return and observational experience in the highly variable environments and target sets at Mars. New missions to the icy moons of Jupiter, ESA's JUICE (Jupiter Icy Moon Explorer) and NASA's Europa Mission, will both carry radar sounders to probe the subsurface of several of the icy moons (Ganymede, Europa and Callisto by JUICE; Europa by the Europa Mission). The success of the Mars sounders demonstrated the scientific value of the technique and provided confidence that sounding of the icy moons is a promising endeavor. Icy targets at Mars have proven especially amenable to penetration by radar sounding. The polar layered deposits of Mars have been probed to their base (2-4 km deep) by MARSIS, operating at frequencies of 1.3-5.5 MHz. SHARAD, operating with a wider bandwidth at 15-25 MHz, provides higher vertical resolution that allows detection and imaging of fine details of interior layering in the ice deposits. The sounder planned for the Europa mission, REASON (Radar for Europa Assessment and Sounding, Ocean to Near-Surface), will utilize simultaneous dual frequency signals to obtain complementary deep sounding and high-vertical-resolution shallow observations. Co-located observations by MARSIS and SHARAD also demonstrate that high surface roughness (relative to the radar wavelength) affects the strength of the penetrating signals, and thus the capability to detect deep or low-contrast subsurface interfaces. The icy moon sounders' wavelengths were selected, in part, to mitigate against this degradation of signals by the anticipated rough surfaces of Jupiter's moons. This paper will discuss these and other examples of lessons learned from Mars sounding that will be applied to the exploration of the icy moons. JF - American Geophysical Union Fall Meeting AU - Plaut, Jeffrey AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53G EP - 04 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298440?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Radar+sounding+for+planetary+subsurface+exploration%3B+translating+the+Mars+experience+to+Jupiter%27s+icy+moons&rft.au=Plaut%2C+Jeffrey%3BAnonymous&rft.aulast=Plaut&rft.aufirst=Jeffrey&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - RIS (super 4) E at Kilauea's December 1974 flow; lava flow texture LiDAR signatures AN - 1849298436; 2016-105693 AB - High-resolution point clouds and digital terrain models (DTMs) are used to investigate lava textures on the Big Island of Hawaii. Lava texture (e.g., 'a'a and pahoehoe) depends significantly on eruption conditions, and it is therefore instructive, if accurately determined. In places where field investigations are prohibitive (e.g., on other planets and remote regions of Earth) lava texture must be assessed from remote sensing data. A reliable method for doing so remains elusive. The December 1974 flow from Kilauea, in the Kau desert, presents an excellent field site to develop techniques for identifying lava texture. The eruption is young and the textures are well preserved. We present results comparing properties of lava textures observed in Terrestrial Laser Scanning (TLS) data. The authors collected the TLS data during May 2014 and June 2015 field seasons. Scans are a quantitative representation of what a geologist, or robotic system, sees "on the ground" and provides "ground truth" for airborne or orbital remote sensing analysis by enabling key parameters of lava morphology to be quantified. While individual scans have a heterogeneous point density, multiple scans are merged such that sub-cm lava textures can be quantified. Results indicate that TLS-derived surface roughness (i.e., de-trended RMS roughness) is useful for differentiating lava textures and assists volcanologic interpretations. As many lava types are quite rough, it is not simply roughness that is the most advantageous parameter for differentiating lava textures; rather co-occurrence patterns in surface roughness are used. Gradually forming textures (e.g., pahoehoe) are elevated in statistics that measure smoothness (e.g., homogeneity) while lava with disrupted crusts (e.g., slabby and platy flow) have more random distributions of roughness (i.e., high entropy). A similar technique will be used to analyze high-resolution DTMs of martian lava flows using High Resolution Imaging Science Experiment DTMs. This work will lead to faster and more reliable volcanic mapping efforts for planetary exploration as well as terrestrial geohazards. JF - American Geophysical Union Fall Meeting AU - Whelley, Patrick AU - Garry, William Brent AU - Scheidt, Stephen P AU - Bleacher, Jacob E AU - Hamilton, Christopher AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P31A EP - 2050 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298436?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=RIS+%28super+4%29+E+at+Kilauea%27s+December+1974+flow%3B+lava+flow+texture+LiDAR+signatures&rft.au=Whelley%2C+Patrick%3BGarry%2C+William+Brent%3BScheidt%2C+Stephen+P%3BBleacher%2C+Jacob+E%3BHamilton%2C+Christopher%3BAnonymous&rft.aulast=Whelley&rft.aufirst=Patrick&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Preliminary geological map of the Ac-H-13 Urvara quadrangle of Ceres; an integrated mapping study using dawn spacecraft data AN - 1849298423; 2016-105877 AB - We used geologic mapping applied to Dawn spacecraft data as a tool to understand the geologic history of the Ac-H-13 Urvara Quadrangle of dwarf planet Ceres. This region, located between 21 degrees S-66 degrees S and 180-270 degrees E, is dominated by the Urvara basin in the east and cratered plains in the west. The elevation of the cratered plains is intermediate between the identified "highland" and "lowland" units of Ceres. Plains in the SW corner of the quadrangle are hummocky and heavily cratered, while the NW corner is smoother and less densely cratered. Features of note include 1) the 200 km diameter Urvara basin, which includes a degraded northern rim and smooth interior and exterior material that hosts a significantly lower impact crater density than most of the rest of Ceres' surface; 2) semi-radial curvilinear structures extending to the east and west of Urvara; 3) two large-scale dome structures 10s of km in diameter exterior to Urvara; and 4) numerous small-scale domical structures (<12 km diameter) associated with the smooth material interior to the basin. Key goals of the ongoing mapping are to assess the types of resurfacing processes that might be responsible for producing the smooth units, and to assess the processes responsible for the development of large and small dome structures. At the time of this writing geologic mapping was performed on Framing Camera (FC) mosaics from the Approach (1.3 km/px) and Survey (415 m/px) orbits, including clear filter and color images and digital terrain models derived from stereo images. In Fall 2015 images from the High Altitude Mapping Orbit (140 m/px) will be used to refine the mapping, followed by Low Altitude Mapping Orbit (35 m/px) images starting in December 2015. Support of the Dawn Instrument, Operations, and Science Teams is acknowledged. This work is supported by grants from NASA, the Max Planck Society and from the German and Italian Space Agencies. JF - American Geophysical Union Fall Meeting AU - Williams, David A AU - Sizemore, Hanna G AU - Platz, Thomas AU - O'Brien, David P AU - Mest, Scott C AU - Yingst, R Aileen AU - Crown, David A AU - Buczkowski, Debra AU - Schenk, Paul AU - Scully, Jennifer E C AU - Jaumann, Ralf AU - Roatsch, Thomas AU - Preusker, Frank AU - Nathues, Andreas AU - De Sanctis, Maria Cristina AU - Russell, Christopher T AU - Raymond, Carol A AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53E EP - 2180 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298423?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Preliminary+geological+map+of+the+Ac-H-13+Urvara+quadrangle+of+Ceres%3B+an+integrated+mapping+study+using+dawn+spacecraft+data&rft.au=Williams%2C+David+A%3BSizemore%2C+Hanna+G%3BPlatz%2C+Thomas%3BO%27Brien%2C+David+P%3BMest%2C+Scott+C%3BYingst%2C+R+Aileen%3BCrown%2C+David+A%3BBuczkowski%2C+Debra%3BSchenk%2C+Paul%3BScully%2C+Jennifer+E+C%3BJaumann%2C+Ralf%3BRoatsch%2C+Thomas%3BPreusker%2C+Frank%3BNathues%2C+Andreas%3BDe+Sanctis%2C+Maria+Cristina%3BRussell%2C+Christopher+T%3BRaymond%2C+Carol+A%3BAnonymous&rft.aulast=Williams&rft.aufirst=David&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Understanding Europa's ice shell and subsurface water through terrestrial analogs for flyby radar sounding AN - 1849298421; 2016-105900 AB - The recently approved NASA mission to Europa proposes to study this ice-covered moon of Jupiter though a series of fly-by observations of its surface and subsurface from a spacecraft in Jovian orbit. The science goal of this mission is to "explore Europa to investigate its habitability". One of the primary instruments in the selected scientific payload is a multi-frequency, multi-channel ice penetrating radar system. The "Radar for Europa Assessment and Sounding: Ocean to Near-surface (REASON)" will play a critical role in achieving the mission's habitability driven science objectives, which include characterizing the distribution of any shallow subsurface water, searching for an ice-ocean interface and evaluating a spectrum of ice-ocean-atmosphere exchange hypotheses. The development of successful measurement and data interpretation techniques for exploring Europa will need to leverage knowledge of analogous terrestrial environments and processes. Towards this end, we will discuss a range of terrestrial radioglaciological analogs for hypothesized physical, chemical, and biological processes on Europa and present airborne data collected with the University of Texas dual-frequency radar system over a variety of terrestrial targets. These targets include water filled fractures, brine rich ice, water lenses, accreted marine ice, and ice surfaces with roughness ranging from firn to crevasse fields and will provide context for understanding and optimizing the observable signature of these processes in future radar data collected at Europa. JF - American Geophysical Union Fall Meeting AU - Blankenship, Donald D AU - Grima, Cyril AU - Young, Duncan A AU - Schroeder, Dustin M AU - Soderlund, Krista M AU - Gim, Young AU - Plaut, Jeffrey J AU - Patterson, Gerald AU - Moussessian, Alina AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53G EP - 02 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298421?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Understanding+Europa%27s+ice+shell+and+subsurface+water+through+terrestrial+analogs+for+flyby+radar+sounding&rft.au=Blankenship%2C+Donald+D%3BGrima%2C+Cyril%3BYoung%2C+Duncan+A%3BSchroeder%2C+Dustin+M%3BSoderlund%2C+Krista+M%3BGim%2C+Young%3BPlaut%2C+Jeffrey+J%3BPatterson%2C+Gerald%3BMoussessian%2C+Alina%3BAnonymous&rft.aulast=Blankenship&rft.aufirst=Donald&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Compositional analysis of primitive and icy planetary surfaces with in situ two-step laser mass spectrometry AN - 1849298420; 2016-105789 AB - Small bodies represent a diverse class of solar system objects that offer insights into the earliest composition and nascent alteration pathways that provided the chemical inventory available during planetary formation. Many of these bodies remain enigmatic and are compelling targets for in situ ground truth measurements by a simple but capable analytical instrument that would complement volatile and spectroscopic analyses. Such an instrument would also provide the benefit of guiding scientifically based sample selection and prioritization for a sample return mission. We have developed a prototype laser time-of-flight mass spectrometer that is able to detect both inorganic and organic species generated directly from an unprepared powdered sample or rock chip. Our L2MS (two-step laser mass spectrometer) instrument is sensitive over a wide mass range and employs advanced mass spectrometric techniques to distinguish between compounds of the same nominal mass by selected ion fragmentation and selective desorption/ionization techniques. A series of small body-relevant analog mixtures have been used to characterize the capabilities of this instrument, and results from an L2MS prototype will be presented. JF - American Geophysical Union Fall Meeting AU - Uckert, Kyle AU - Getty, Stephanie AU - Grubisic, Andrej AU - Li, Xiang AU - Cornish, Timothy AU - Brinckerhoff, William B AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P52A EP - 03 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298420?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Compositional+analysis+of+primitive+and+icy+planetary+surfaces+with+in+situ+two-step+laser+mass+spectrometry&rft.au=Uckert%2C+Kyle%3BGetty%2C+Stephanie%3BGrubisic%2C+Andrej%3BLi%2C+Xiang%3BCornish%2C+Timothy%3BBrinckerhoff%2C+William+B%3BAnonymous&rft.aulast=Uckert&rft.aufirst=Kyle&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Shapes and rotations of the small satellites of Pluto AN - 1849298308; 2016-105737 AB - Pluto-Charon is a binary dwarf planet surrounded by four much smaller satellites: Styx, Nix, Kerberos, and Hydra (in order of increasing distance from the barycenter). These satellites were discovered with the Hubble Space Telescope, which also showed that their orbits are nearly circular around the system barycenter and coplanar to the central binary. NASA's New Horizons spacecraft flew through the Pluto system on July 14, 2015, and obtained the first resolved images of all four small satellites. We will present initial models for the shapes and sizes of the small satellites determined from both those resolved images and earlier unresolved high-cadence images. We will also explore the implications of these shapes on the formation and rotational evolution of the satellites. JF - American Geophysical Union Fall Meeting AU - Porter, Simon AU - Showalter, Mark AU - Spencer, John R AU - Weaver, Harold A, Jr AU - Binzel, Richard P AU - Hamilton, Douglas P AU - Stern, S Alan AU - Olkin, Catherine AU - Young, Leslie Ann AU - Ennico Smith, Kimberly AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P51A EP - 2031 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298308?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Shapes+and+rotations+of+the+small+satellites+of+Pluto&rft.au=Porter%2C+Simon%3BShowalter%2C+Mark%3BSpencer%2C+John+R%3BWeaver%2C+Harold+A%2C+Jr%3BBinzel%2C+Richard+P%3BHamilton%2C+Douglas+P%3BStern%2C+S+Alan%3BOlkin%2C+Catherine%3BYoung%2C+Leslie+Ann%3BEnnico+Smith%2C+Kimberly%3BAnonymous&rft.aulast=Porter&rft.aufirst=Simon&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Ceres evolution; from thermodynamic modeling and now Dawn observation AN - 1849298303; 2016-105651 AB - Thermodynamic modeling indicated that Ceres has experienced planetary processes, including extensive melting of its approximately 25% water and differentiation, (McCord and Sotin, JGR, 2005; Castillo and McCord, Icarus, 2009). Early telescopic studies showed Ceres' surface to be spectrally similar to carbonaceous-chondrite-like material, i.e., aqueously altered silicates darkened by carbon, with a water-OH-related absorption near 3.06 mu m. Later observations improved the spectra and suggested more specific interpretations: Structural water in clay minerals, phyllosilicates, perhaps ammoniated, iron-rich clays, carbonates, brucite, all implying extensive aqueous alteration, perhaps in the presence of CO (sub 2) . Telescopic observations and thermodynamic models predicted Dawn would find a very different body compared to Vesta (e.g. McCord et al., SSR, 2011), as current Dawn observations are confirming. Ceres' original water ice should have melted early in its evolution, with the resulting differentiation and mineralization strongly affecting Ceres' composition, size and shape over time. The ocean should have become very salty and perhaps may still be liquid in places. The surface composition from telescopes seems to reflect this complex history. The mineralization with repeated mixing of the crust with the early liquid interior and with in-fall from space would create a complex surface that will present an interpretation challenge for Dawn. The Dawn spacecraft is currently collecting observations of Ceres' landforms, elemental and mineralogical/molecular composition and gravity field from orbit. Early results suggest a heavily cratered but distorted and lumpy body with features and composition consistent with internal activity, perhaps recent or current, associated with water and perhaps other volatiles. We will present and interpret the latest Dawn Ceres findings and how they affect our earlier understanding of Ceres evolution from modeling and telescope observations. JF - American Geophysical Union Fall Meeting AU - McCord, Thomas B AU - Combe, Jean-Philippe AU - Castillo, Julie C AU - Raymond, Carol A AU - De Sanctis, Maria Cristina AU - Jaumann, Ralf AU - Ammannito, Eleonora AU - Russell, Christopher T AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P23D EP - 01 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298303?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Ceres+evolution%3B+from+thermodynamic+modeling+and+now+Dawn+observation&rft.au=McCord%2C+Thomas+B%3BCombe%2C+Jean-Philippe%3BCastillo%2C+Julie+C%3BRaymond%2C+Carol+A%3BDe+Sanctis%2C+Maria+Cristina%3BJaumann%2C+Ralf%3BAmmannito%2C+Eleonora%3BRussell%2C+Christopher+T%3BAnonymous&rft.aulast=McCord&rft.aufirst=Thomas&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Evidence for acid-sulfate alteration in the Pahrump Hills region, Gale Crater, Mars AN - 1849298282; 2016-105894 AB - The Pahrump Hills region of Gale crater is a approximately 12 m thick section of sedimentary rock in the Murray formation, interpreted as the basal geological unit of Mount Sharp. The Mars Science Laboratory, Curiosity, arrived at the Pahrump Hills in September 2014 and performed a detailed six-month investigation of the sedimentary structures, geochemistry, and mineralogy of the area. During the campaign, Curiosity drilled and delivered three mudstone samples (targets Confidence Hills, Mojave 2, and Telegraph Peak) to its internal instruments, including the CheMin XRD/XRF. Results from CheMin show that these samples have variable amounts of plagioclase, pyroxene, iron oxides, jarosite, phyllosilicates, cristobalite, and X-ray amorphous material. The presence of jarosite in all samples indicates these rocks were affected by acid-sulfate alteration, and the mineralogical and geochemical trends observed through the section may give more insight into this process. Geochemical data measured by PXS show enrichment in Si and depletion in Mg moving up section. CheMin data show that cristobalite is more abundant up section, whereas pyroxene and phyllosilicates are more abundant at the bottom of the section. Based on mineralogical and geochemical trends and diagenetic features observed in the Pahrump Hills, we hypothesize that the sediments were altered in-situ by acid-sulfate fluids moving down from the top of the section to leach mobile elements, dissolve the minerals most susceptible to acidic alteration, and precipitate secondary silica at the top of the section. Alternative interpretations of the observed mineralogical and geochemical data are possible, including the hypothesis that the redox conditions of the body of water in which the sediments were deposited changed over time. JF - American Geophysical Union Fall Meeting AU - Rampe, Elizabeth B AU - Ming, Douglas W AU - Vaniman, David T AU - Blake, David Frederick AU - Chipera, Steve AU - Morris, Richard V AU - Bish, David L AU - Cavanagh, Patrick AU - Achilles, Cherie AU - Bristow, Thomas AU - Fairen, Alberto G AU - Morrison, Shaunna M AU - Treiman, Allan H AU - Crisp, Joy A AU - Downs, Robert T AU - Farmer, Jack D AU - Fendrich, Kim AU - Morookian, John AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53F EP - 04 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298282?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Evidence+for+acid-sulfate+alteration+in+the+Pahrump+Hills+region%2C+Gale+Crater%2C+Mars&rft.au=Rampe%2C+Elizabeth+B%3BMing%2C+Douglas+W%3BVaniman%2C+David+T%3BBlake%2C+David+Frederick%3BChipera%2C+Steve%3BMorris%2C+Richard+V%3BBish%2C+David+L%3BCavanagh%2C+Patrick%3BAchilles%2C+Cherie%3BBristow%2C+Thomas%3BFairen%2C+Alberto+G%3BMorrison%2C+Shaunna+M%3BTreiman%2C+Allan+H%3BCrisp%2C+Joy+A%3BDowns%2C+Robert+T%3BFarmer%2C+Jack+D%3BFendrich%2C+Kim%3BMorookian%2C+John%3BAnonymous&rft.aulast=Rampe&rft.aufirst=Elizabeth&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Third-order development of shape, gravity, and moment of inertia of Ceres AN - 1849298251; 2016-105886 AB - Ceres is the target of the space mission Dawn. It is a protoplanet that is left over from the formation of the solar System about 4.6 billion years ago and its study could improve our knowledge of the early solar system. Quantifying these properties under the assumption of hydrostatic equilibrium forms the basis for interpreting shape and gravity data in terms of interior structure and infer deviations from hydrostaticity that can bring information on the thermal and chemical history of the planet. Here, we investigate the hydrostatic shape and gravitational potential coefficients of Ceres that is large enough to have undergone internal differentiation and chemical stratification. The Dawn spacecraft is expected to obtained a high-resolution shape data, with an accuracy better than 200 m/pixel. In order to reach an accuracy of few tens of meters for this 9 hours self-gravitating body, the shape models developed up to first order are not enough because they attain an accuracy of 1.8 km. Therefore, we numerically integrate Clairaut's equations of rotational equilibrium expanded up to third order in a small parameter m, the geodetic parameter, to reach an accuracy of 25 meters. The following geodetical quantities under the hydrostatic hypothesis are derived: flattening and other shape parameters, gravitational potential coefficients, and moments of inertia. This type of modeling will be instrumental to the estimation of non-hydrostatic contributions to Ceres' shape to be measured by Dawn. JF - American Geophysical Union Fall Meeting AU - Rambaux, Nicolas AU - Chambat, Frederic AU - Castillo, Julie C AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53E EP - 2189 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298251?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Third-order+development+of+shape%2C+gravity%2C+and+moment+of+inertia+of+Ceres&rft.au=Rambaux%2C+Nicolas%3BChambat%2C+Frederic%3BCastillo%2C+Julie+C%3BAnonymous&rft.aulast=Rambaux&rft.aufirst=Nicolas&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Preliminary geological map of the Ac-H-9 Occator quadrangle of Ceres; an integrated mapping study using Dawn spacecraft data AN - 1849298234; 2016-105873 AB - We used geologic mapping applied to Dawn spacecraft data as a tool to understand the geologic history of the Ac-H-9 Occator quadrangle of dwarf planet Ceres. This region, located between 22 degrees S-22 degrees N and 216-288 degrees E, is one of two longitudinally distinct regions on Ceres where ESA Herschel space telescope data suggested a release of water vapor and hosts: 1) the 92 km diameter impact crater Occator in the NW of the quadrangle, whose rim is scalloped and whose interior encompasses Hubble "Bright Spot 5"; 2) the 115 km diameter crater Kirnis, a degraded crater that contains a large dome-like feature on the western half of its floor; and 3) regional linear structures, that both cut crater rims (including Occator and Kirnis) and affect crater shapes. Key goals of the ongoing mapping are to 1) determine the source of the bright spots in Occator; 2) determine if the dome-like feature in Kirnis resulted from a mass-wasting or is a product of uplift; and 3) assess the relationships between linear structural features and impact craters, including the effects of surface stress regimes on crater formation and modification. At the time of this writing geologic mapping was performed on Framing Camera (FC) mosaics from late Approach (1.3 km/px) and Survey (415 m/px) orbits, including clear filter and color images and digital terrain models derived from stereo images. In Fall 2015 images from the High Altitude Mapping Orbit (140 m/px) will be used to refine the mapping, followed by Low Altitude Mapping Orbit (35 m/px) images starting in December 2015. Support of the Dawn Instrument, Operations, and Science Teams is acknowledged. This work is supported by grants from NASA through the Dawn project, and from the German and Italian Space Agencies. JF - American Geophysical Union Fall Meeting AU - Buczkowski, Debra AU - Yingst, R Aileen AU - Williams, David A AU - Mest, Scott C AU - Scully, Jennifer E C AU - Crown, David A AU - Schenk, Paul AU - Jaumann, Ralf AU - Roatsch, Thomas AU - Preusker, Frank AU - Platz, Thomas AU - Nathues, Andreas AU - Hoffmann, Martin AU - Schaefer, Michael AU - Marchi, Simone AU - De Sanctis, Maria Cristina AU - Raymond, Carol A AU - Russell, Christopher T AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53E EP - 2176 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298234?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Preliminary+geological+map+of+the+Ac-H-9+Occator+quadrangle+of+Ceres%3B+an+integrated+mapping+study+using+Dawn+spacecraft+data&rft.au=Buczkowski%2C+Debra%3BYingst%2C+R+Aileen%3BWilliams%2C+David+A%3BMest%2C+Scott+C%3BScully%2C+Jennifer+E+C%3BCrown%2C+David+A%3BSchenk%2C+Paul%3BJaumann%2C+Ralf%3BRoatsch%2C+Thomas%3BPreusker%2C+Frank%3BPlatz%2C+Thomas%3BNathues%2C+Andreas%3BHoffmann%2C+Martin%3BSchaefer%2C+Michael%3BMarchi%2C+Simone%3BDe+Sanctis%2C+Maria+Cristina%3BRaymond%2C+Carol+A%3BRussell%2C+Christopher+T%3BAnonymous&rft.aulast=Weber&rft.aufirst=Renee&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Oceans abound? Tectonic tests of global ocean models for Enceladus and Mimas AN - 1849298225; 2016-105617 AB - Librations identified in Cassinidata imply that Mimas either has a global ocean or an irregular core (Tajeddine et al., 2014). A global ocean is the only model consistent with Enceladus' librations (Tajeddine et al., 2015). A global ocean can also explain gravity measurements of Enceladus as long as the overlying ice shell is thicker in the north pole than the south pole (McKinnon, 2015), although a regional sea is also possible (Iess et al., 2014). Generations of fractures at Enceladus' south pole may indicate longitudinal migration of the ice shell, which would also require a global ocean (Patthoff and Kattenhorn, 2011). Because both Mimas and Enceladus have eccentric orbits (0.0196 and 0.0047, respectively) interior models that include oceans can generate much larger tidal stresses than models without oceans. However, the enhancement in tidal stress due to oceans creates complications for both moons. Mimas' surface is ancient and heavily cratered; only about 40 tectonic features have been identified, globally (Schenk, 2011). The lack of tidal-tectonic activity on Mimas implies that either it has not experienced large tidal stresses over its surface age or that its ice shell behaves quite differently than Europa. Enceladus has a young, heavily-fractured region at the south pole, and an old, heavily-cratered region at the north pole. Are global ocean models compatible with ongoing, tidal-tectonic activity at Enceladus' south pole and the lack of activity on Mimas and at Enceladus' north pole? We consider whether global oceans are compatible with the geologic records of Mimas and Enceladus by calculating tidal stresses for 5-layer interior structure models. To explore the range of possible interior structures, we vary the ice shell thickness, the depth of the upper brittle ice layer, and the viscosities of the brittle and ductile ice layers. We find that a global ocean within Mimas generates tidal stresses comparable to those on Europa ( approximately 100 kPa) and in some cases much larger (>1 MPa), which is very difficult to reconcile with its lack of tectonic activity. We, thus, favor the interpretation that Mimas has an elongated core. For Enceladus, our preliminary analysis suggests that it is challenging to find global ocean models that would promote fracturing in the south pole while inhibiting fracturing in the north pole. JF - American Geophysical Union Fall Meeting AU - Rhoden, Alyssa AU - Henning, Wade G AU - Bland, Michael T AU - Tajeddine, Radwan AU - Hurford, Terry, Jr AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P21B EP - 08 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298225?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Oceans+abound%3F+Tectonic+tests+of+global+ocean+models+for+Enceladus+and+Mimas&rft.au=Rhoden%2C+Alyssa%3BHenning%2C+Wade+G%3BBland%2C+Michael+T%3BTajeddine%2C+Radwan%3BHurford%2C+Terry%2C+Jr%3BAnonymous&rft.aulast=Rhoden&rft.aufirst=Alyssa&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Plumes and tides on Europa; implications from the 2015 HST campaign AN - 1849298165; 2016-105653 AB - Two plumes of water vapor emanating from Europa's southern leading hemisphere provide the best explanation for UV emissions detected by HST in Dec 2012 (Roth et al., 2014a). The detection occurred when Europa was near its orbital apocenter; there was no indication of plumes in two previous observations that occurred near pericenter. A southern location and cyclic activity peaking at apocenter are characteristic of Enceladus' plumes (Porco et al., 2006; Spencer et al., 2006; Hedman et al., 2013), which led to the suggestion that Europa also has long-lived, active plumes controlled by tides (Roth et al., 2014a). However, two subsequent observations did not result in a repeat detection, even when Europa was again near apocenter (Roth et al., 2014b). Because tidal stresses caused by eccentricity, the supposed control mechanism of Enceladus' plumes (Hurford et al., 2007; Nimmo et al., 2014), repeat exactly over each orbit, the lack of a repeat detection challenged the interpretation of tidally-modulated plumes on Europa. In Rhoden et al. (2015), we considered the role of Europa's tilted and precessing spin pole in modulating the eruption timing of the plumes. We found that, for a range of plausible precession rates (see Bills et al., 2009), tidal stresses could change substantially over subsequent orbits even for the same fracture orientation, location, and time in Europa's orbit. We then identified subsets of fractures that would have been in tension when the plumes were detected and in compression during the other four observations. An additional 15 HST observations of Europa have now been conducted over a wide range of true anomalies, with no plumes detected. Whether we would predict plumes at these times--due to tidal stress--depends on the precession rate we assume for Europa. We use the approach presented in Rhoden et al. (2015) to simultaneously fit all 20 HST observations to determine whether any fractures on Europa would be compatible with long-lived, tidally-modulated plumes. Furthermore, the 4-fold increase in the number of observations from the 2015 HST cycle can provide new insight into the conditions that may control plume behavior, such as the availability of liquid water and the number of active faults. We will discuss these implications and how they relate to the upcoming mission to Europa. JF - American Geophysical Union Fall Meeting AU - Rhoden, Alyssa AU - Hurford, Terry, Jr AU - Roth, Lorenz AU - Retherford, Kurt D AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P23D EP - 03 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298165?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Plumes+and+tides+on+Europa%3B+implications+from+the+2015+HST+campaign&rft.au=Rhoden%2C+Alyssa%3BHurford%2C+Terry%2C+Jr%3BRoth%2C+Lorenz%3BRetherford%2C+Kurt+D%3BAnonymous&rft.aulast=Rhoden&rft.aufirst=Alyssa&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Significance of near-surface ice fracture for radio sounding of Europa's ice AN - 1849298163; 2016-105768 AB - Ice-penetrating radar sounding is a powerful geophysical technique for directly imaging the near-subsurface structure of icy satellites. Scattering losses from subsurface features such as regolith, faults, or crevasses constrains the performance of radar sounders and can limit their ability to detect radar returns from subsurface features such as a global ocean. We present a systematic assessment of potential scattering loss mechanisms for radar sounding observations of Europa's ice shell. We use a volume scattering model to evaluate losses from the Europan regolith, which is expected to be either impact-generated or tidal. While impact regolith does not extend deep enough to affect the radar signal, tidal regolith (if it exists) may be quite deep, based on thermal conductivity models. However, tidal regolith would only significantly attenuate the radar signal if it contained abundant pores at the decameter to meter scale. We also use a 1-D full-wave multi-layer scattering model to show that faults - regardless of their abundance and orientation- are unlikely to provide sufficient dielectric contrast to attenuate the radar signal. Finally, we use a rough-surface propagation model to show that vacuum-filled crevasses are not expected to have sufficient abundance to introduce significant losses. We conclude that, for the range of physical processes and material properties observed or hypothesized for Europa, scattering losses are unlikely to play a significant role in determining radar signal penetration and performance. JF - American Geophysical Union Fall Meeting AU - Aglyamov, Yury Salavatovich AU - Schroeder, Dustin M AU - Haynes, Mark AU - Vance, Steve AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P51C EP - 2081 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298163?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Significance+of+near-surface+ice+fracture+for+radio+sounding+of+Europa%27s+ice&rft.au=Aglyamov%2C+Yury+Salavatovich%3BSchroeder%2C+Dustin+M%3BHaynes%2C+Mark%3BVance%2C+Steve%3BAnonymous&rft.aulast=Aglyamov&rft.aufirst=Yury&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - A seasonal feature in Mercury's exosphere caused by meteoroids from Comet Encke AN - 1849298161; 2016-105795 AB - The planet Mercury is enveloped in a tenuous atmosphere, the result of a delicate balance between poorly understood sources and sinks (Killen et al, 2007). Meteoroid impacts are a contributing source process (e.g. Wurz et al, 2010), but their importance compared to other production mechanisms is uncertain. Killen and Hahn (2015) found that seasonal variations in Mercury's calcium exosphere as observed by the MASCS spectrometer onboard the MESSENGER spacecraft (Burger et al, 2014) may be due to impact vaporization of surface material by the infall of interplanetary dust. However, an additional dust source was required to explain a Ca excess at a True Anomaly Angle (TAA) of 25+ or -5 deg. Killen and Hahn suggested that dust from comet 2P/Encke, crossing Mercury's orbital plane at TAA=45 deg, may be the culprit. We have simulated numerically the stream of meteoroids ejected from Encke to test the Killen and Hahn conjecture. We find that Encke particles evolving solely under the gravity of the major planets and the Sun encounter Mercury at TAA=50-60 deg, well after the peak of the Ca excess emission. However, the addition of Poynting-Robertson (P-R) drag in our model couples the age and size of the meteoroids to the TAA at encounter, causing smaller, older particles to encounter Mercury progressively earlier in the Hermean year. In particular, mm-sized grains ejected between 10 and 20 kyr ago impact on the nightside hemisphere of Mercury at TAA= 50-30 deg, near the observed peak time of the exospheric feature. During this presentation, we will describe our model results and discuss their implications for the physical mechanism that injects impact-liberated Ca into sunlight as well as the origin and evolution of the Encke stream of meteoroids. JF - American Geophysical Union Fall Meeting AU - Burger, Matthew H AU - Christou, Apostolos AU - Killen, Rosemary M AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53A EP - 2091 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298161?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=A+seasonal+feature+in+Mercury%27s+exosphere+caused+by+meteoroids+from+Comet+Encke&rft.au=Burger%2C+Matthew+H%3BChristou%2C+Apostolos%3BKillen%2C+Rosemary+M%3BAnonymous&rft.aulast=Burger&rft.aufirst=Matthew&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - The correlation between electron density and temperature in low and high strength crustal magnetic field regions at Mars AN - 1849298144; 2016-105609 AB - The Langmuir Probe and Waves Instrument (LPW) onboard the MAVEN spacecraft is the first Langmuir probe to map out the upper atmosphere of Mars. The instrument provides measurements (amongst other variables) of electron density (Ne) and temperature (Te). The overarching scientific goal of MAVEN is to determining how Mars lost its atmosphere and to understand the physical processes governing this escape and the above quantities play a crucial role in understanding this. Ne and Te information is critical for determining the efficiency of the different photochemical reaction rates and thereby in understanding the upper atmospheric composition. Understanding the upper atmosphere allows the MAVEN mission to calculate escape rates. Photochemical reactions and collisions dominate below the exobase region ( approximately 150- approximately 180 km). Above the exobase, particles with energies greater than the Mars gravity well can escape. On the dayside solar EUV heats the atmosphere at lower altitudes and produces the ionosphere. It is of great interest to understand the how the electron density and temperature correlate. The presented study therefore shows the correlation between Ne and Te. This study investigates how different solar zenith angles affect these quantities and evaluates if closed magnetic field lines (as expected to occur over crustal magnetic fields) change the correlation between the two. Many previous studies have shown that crustal fields affect the plasma at high altitudes. In this study we present how the magnetic field influences the photochemical and the plasma processes close to the exobase via analyzing Ne and Te. JF - American Geophysical Union Fall Meeting AU - Chamandy, Tiffany AU - Andersson, Laila AU - Fowler, Christopher M AU - Ergun, Robert AU - Connerney, John E P AU - Brain, David A AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P21A EP - 2041 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298144?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=The+mineralogical+record+of+fO+%28sub+2%29+variation+and+alteration+in+Northwest+Africa+8159+%28NWA+8159%29%3B+evidence+for+the+interaction+between+a+mantle+derived+Martian+basalt+and+a+crustal+component%28s%29&rft.au=Shearer%2C+Charles+K%3BBell%2C+Aaron+S%3BBurger%2C+Paul+V%3BMcCubbin%2C+Francis+M%3BAgee%2C+Carl%3BSimon%2C+Justin%3BPapike%2C+James+J%3BAnonymous&rft.aulast=Shearer&rft.aufirst=Charles&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Preliminary geological map of the Ac-H-4 Ezinu quadrangle of Ceres; an integrated mapping study using Dawn spacecraft data AN - 1849298135; 2016-105868 AB - The Dawn team divided the surface of Ceres into fifteen quadrangles to facilitate systematic geological mapping, which is a tool used to methodically observe and interpret the surfaces of planetary bodies. Here we present a geological map of Ezinu quadrangle, along with initial interpretations of the quadrangle's geological history. Ezinu quadrangle is located from 21-66 degrees N and 180-270 degrees E and includes the following dominant features. (1) Ezinu crater (120 km diameter), which contains a cluster of small craters, sinuous grooves and mass wasting deposits in its interior. Ezinu crater is associated with dark mantling material, which corresponds to the northern part of the HST #8 dark albedo region observed by Li et al. (2006). (2) The northern portion of Occator crater (92 km diameter), which is associated with dark mantling material that we interpret as Occator ejecta. This dark mantling material corresponds to part of the HST #10 dark albedo region observed by Li et al. (2006). (3) Northwest-striking crater chains and grooves, which cross-cut the southern part of Ezinu quadrangle. It is possible that the crater chains and grooves were formed by material ejected during formation of the Yalode and/or Urvara impact craters in the southern hemisphere. In addition, Ezinu quadrangle is located in one of two possible source regions of water vapor detected around Ceres (Kuppers et al., 2014). Ongoing work will include the identification of possible water vapor source regions and the development of a detailed geological history of the quadrangle. Currently, the geological mapping is based on Approach ( approximately 1.3 km/pixel) and Survey ( approximately 400 m/pixel) mosaics of clear and color filter data from the Dawn spacecraft's Framing Camera. In addition, shape models derived from Framing Camera data are used as a mapping aid. Dawn will begin the High Altitude Mapping Orbit (HAMO) in mid-August, and our geological mapping will incorporate the higher resolution HAMO mosaics ( approximately 140 m/pixel). JF - American Geophysical Union Fall Meeting AU - Scully, Jennifer E C AU - Raymond, Ccarol A AU - Williams, David A AU - Buczkowski, Debra AU - Mest, Scott C AU - Hughson, Kynan AU - Russell, Christopher T AU - Kneissl, Thomas AU - Ruesch, Ottaviano AU - Frigeri, Alessandro AU - Combe, Jean-Philippe AU - Schenk, Paul AU - Jaumann, Ralf AU - Roatsch, Thomas AU - Preusker, Frank AU - Platz, Thomas AU - Nathues, Andreas AU - Hoffmann, Martin AU - Schaefer, Michael AU - Park, Ryan S AU - Marchi, Simone AU - De Sanctis, Maria Cristina AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53E EP - 2171 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298135?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Preliminary+geological+map+of+the+Ac-H-4+Ezinu+quadrangle+of+Ceres%3B+an+integrated+mapping+study+using+Dawn+spacecraft+data&rft.au=Scully%2C+Jennifer+E+C%3BRaymond%2C+Ccarol+A%3BWilliams%2C+David+A%3BBuczkowski%2C+Debra%3BMest%2C+Scott+C%3BHughson%2C+Kynan%3BRussell%2C+Christopher+T%3BKneissl%2C+Thomas%3BRuesch%2C+Ottaviano%3BFrigeri%2C+Alessandro%3BCombe%2C+Jean-Philippe%3BSchenk%2C+Paul%3BJaumann%2C+Ralf%3BRoatsch%2C+Thomas%3BPreusker%2C+Frank%3BPlatz%2C+Thomas%3BNathues%2C+Andreas%3BHoffmann%2C+Martin%3BSchaefer%2C+Michael%3BPark%2C+Ryan+S%3BMarchi%2C+Simone%3BDe+Sanctis%2C+Maria+Cristina%3BAnonymous&rft.aulast=Scully&rft.aufirst=Jennifer+E&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Albedo and spectral variability on ceres from four decades of observations AN - 1849298131; 2016-105880 AB - Dawn Framing Camera (FC) observations of Ceres established the bright spots inside the Occator and Dantu craters as the likely sources of the intermittent and localized water vapor activity observed by Herschel Space Telescope. Recent ground-based observations of Ceres suggested possible global spectral variability that was attributed to changing amount of water ice on the surface. These observations suggest a possibly changing amount of water ice caused by outgassing on time scales of months to decades. We combined the imaging and spectral data of Ceres collected in the past three decades from ground-based telescopes, Hubble Space Telescope (HST), and Dawn FC during its approach to Ceres to search for global and local variabilities on the surface, and did not find evidence supporting changes in the albedo or spectrum of Ceres. The global albedo of Ceres remains unchanged within 3% of its geometric albedo of 0.09 over the time scale of 10 years. The spectral variability of Ceres recently reported can be mostly explained by changes in the observing geometry. By comparing the spatially resolved images from HST and Dawn FC, if water outgassing causes any variations on the albedo of its sources or changes in size of albedo markings, then such change must be smaller than 15% over 10 years. The stable surface of Ceres under water sublimation activity is consistent with the nearly unchanged albedo and spectral properties of comets, although no liquid water is expected on comets and the sublimation mechanism on comets is completely different from that on Ceres. The bright spots on Ceres thus must be built up over a long period of time. It also possible that the sublimation activity on Ceres either occurs in subsurface, or at size scales of <1 km. JF - American Geophysical Union Fall Meeting AU - Li, Jian-Yang AU - Nathues, Andreas AU - Le Corre, Lucille AU - Reddy, Vishnu AU - Sykes, Mark V AU - Carsenty, Uri AU - Castillo, Julie C AU - Hoffmann, Martin AU - Jaumann, Ralf AU - Krohn, Katrin AU - Mottola, Stefano AU - Prettyman, Thomas H AU - Schaefer, Michael AU - Schenk, Paul AU - Schroeder, Stefan AU - Williams, David A AU - Smith, David E AU - Zuber, Maria T AU - Konopliv, Alexandar S AU - Park, Ryan S AU - Raymond, Carol A AU - Russell, Christopher AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P53E EP - 2183 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298131?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Albedo+and+spectral+variability+on+ceres+from+four+decades+of+observations&rft.au=Li%2C+Jian-Yang%3BNathues%2C+Andreas%3BLe+Corre%2C+Lucille%3BReddy%2C+Vishnu%3BSykes%2C+Mark+V%3BCarsenty%2C+Uri%3BCastillo%2C+Julie+C%3BHoffmann%2C+Martin%3BJaumann%2C+Ralf%3BKrohn%2C+Katrin%3BMottola%2C+Stefano%3BPrettyman%2C+Thomas+H%3BSchaefer%2C+Michael%3BSchenk%2C+Paul%3BSchroeder%2C+Stefan%3BWilliams%2C+David+A%3BSmith%2C+David+E%3BZuber%2C+Maria+T%3BKonopliv%2C+Alexandar+S%3BPark%2C+Ryan+S%3BRaymond%2C+Carol+A%3BRussell%2C+Christopher%3BAnonymous&rft.aulast=Li&rft.aufirst=Jian-Yang&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Preservation of lipid biomarkers under prolonged and extreme hyperaridity in Atacama Desert soils AN - 1849298123; 2016-105670 AB - Molecular biomarkers are the most direct biosignatures of life on early Earth and a key target in the search for life on Mars. Lipid biomarkers are of particular interest given their ability to survive oxidative degradation and record microbial presence and activity of microorganisms that occurred billions of years ago (Eigenbrode, 2008). Environmental conditions that suspend biotic and abiotic degradative processes prior to lithification can lead to enhanced biomolecular preservation over geological time-scales. The hyperarid core of the Atacama Desert in northern Chile offers a unique environment to investigate lipid biomarker taphonomy under extreme and prolonged dryness. We investigated the accumulation and degree of preservation of lipid biomarkers in million-year-old hyperarid soils where primarily abiotic conditions influence their taphonomy. Soils were extracted and free and membrane bound lipids were analyzed across a vertical profile of 2.5 meters in the Yungay hyper-arid core of the Atacama Desert. Due to the extremely low inventory of biomass in Atacama soils, samples were collected by scientists wearing cleanroom suits to minimize anthropogenic contamination during sampling. Fatty acids were found to be well preserved in Yungay soils, and were most abundant in the clay-rich soils at approximately 2 m depth ( approximately 750 ng of fatty acid methyl ester/g of soil). These buried clays layers were fluvially deposited approximately 2 million years ago, and have been excluded from exposure to rainwater and modern surficial processes since their emplacement (Ewing et al., 2008). Monocarboxylic fatty acid, monohydroxy fatty acid, glycerol tetraether, and n-alkane hydrocarbon content was found to change with depth. Lipid biomarker content in deeper soil layers is suggestive of soils having been formed at a time when environmental conditions were capable of supporting active microbial communities and plants. In short, total lipid extracts reveal a remarkable degree of lipid biomarker preservation even in the oldest soils analyzed (ca. 2 Myr) indicating that typical diagenetic processes of lipid destruction are arrested under extreme dryness. This result has implications for the search for molecular biomarkers on Mars, which could have experienced millions to billions of years of extreme hyperaridity. JF - American Geophysical Union Fall Meeting AU - Wilhelm, Mary Beth AU - Davila, Alfonso F AU - Eigenbrode, Jennifer L AU - Parenteau, Mary Nicole AU - Jahnke, Linda L AU - Summons, Roger E AU - Liu, Xiaolei AU - Wray, James J AU - Stamos, Brian AU - O'Reilly, Shane S AU - Williams, Amy J AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P31A EP - 2026 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849298123?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Preservation+of+lipid+biomarkers+under+prolonged+and+extreme+hyperaridity+in+Atacama+Desert+soils&rft.au=Wilhelm%2C+Mary+Beth%3BDavila%2C+Alfonso+F%3BEigenbrode%2C+Jennifer+L%3BParenteau%2C+Mary+Nicole%3BJahnke%2C+Linda+L%3BSummons%2C+Roger+E%3BLiu%2C+Xiaolei%3BWray%2C+James+J%3BStamos%2C+Brian%3BO%27Reilly%2C+Shane+S%3BWilliams%2C+Amy+J%3BAnonymous&rft.aulast=Wilhelm&rft.aufirst=Mary&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Shallow subsurface structures of volcanic fissures AN - 1844923795; 2016-101134 AB - Volcanic fissure vents are a difficult geologic feature to quantify. They are often too thin to document in detail with seismology or remote geophysical methods. Additionally, lava flows, lava drain back, or collapsed rampart blocks typically conceal a fissure's surface expression. For exposed fissures, quantifying the surface (let along sub-surface) geometric expression can become an overwhelming and time-consuming task given the non-uniform distribution of wall irregularities, drain back textures, and the larger scale sinuosity of the whole fissure system. We developed (and previously presented) VolcanoBot to acquire robust characteristic data of fissure geometries by going inside accessible fissures after an eruption ends and the fissure cools off to <50 C. Data from VolcanoBot documents the fissure conduit geometry with a near-IR structured light sensor, and reproduces the 3d structures to cm-scale accuracy. Here we present a comparison of shallow subsurface structures (<30 m depth) within the Mauna Ulu fissure system and their counterpart features at the vent-to-ground-surface interface. While we have not mapped enough length of the fissure to document sinuosity at depth, we see a self-similar pattern of irregularities on the fissure walls throughout the entire shallow subsurface, implying a fracture mechanical origin similar to faults. These irregularities are, on average, 1 m across and protrude 30 cm into the drained fissure. This is significantly larger than the 10% wall roughness addressed in the engineering literature on fluid dynamics, and implies that magma fluid dynamics during fissure eruptions are probably not as passive nor as simple as previously thought. In some locations, it is possible to match piercing points across the fissure walls, where the dike broke the wall rock in order to propagate upwards, yet in other locations there are erosional cavities, again, implying complex fluid dynamics in the shallow sub-surface during fissure eruptions. JF - American Geophysical Union Fall Meeting AU - Parcheta, Carolyn E AU - Nash, Jeremy AU - Mitchell, Karl L AU - Parness, Aaron AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract V43B EP - 3133 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1844923795?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Shallow+subsurface+structures+of+volcanic+fissures&rft.au=Parcheta%2C+Carolyn+E%3BNash%2C+Jeremy%3BMitchell%2C+Karl+L%3BParness%2C+Aaron%3BAnonymous&rft.aulast=Parcheta&rft.aufirst=Carolyn&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Searching for indigenous noble gases in the Moon; vacuum crushing of vesicular basalt 15016 and stepwise heating of anorthosites 60025, 60215 and 65315 aliquots AN - 1844922382; 2016-100871 AB - Despite extensive efforts during the last four decades, no primordial signature of lunar xenon has been found. In order to further investigate the possible occurrence of indigenous volatiles in the Moon, we have analysed the noble gas and nitrogen isotopic compositions in two different sets of samples. Vacuum crushing of highly vesicular ( approximately 50% by volume) basalt 15016 (3.4 b.y. old, 300 m.y. exposure age) releases large amounts of spallation-produced gases that overshadow any other component. Lunar anorthosites 60025, 60215 and 65315 have the lowest exposure duration ( approximately 2 m.y.) among Apollo samples. Consequently, they contain only limited cosmogenic (e.g. (super 124,126) Xe) and solar wind noble gases. Furthermore, anorthosite is poor in U and Pu, leading to negligible contribution of fissiogenic Xe isotopes. These properties make these samples ideal for searching for lunar primordial noble gases. As observed in previous studies, lunar anorthosite Xe presents an isotopic composition very close to that of terrestrial atmosphere, which has been previously attributed to "abnormal adsorption" of terrestrial Xe after sample return. This presumed atmospheric Xe contamination can only be removed by heating the samples at medium to high temperature under vacuum, and is therefore different from common adsorption. In order to investigate this abnormal adsorption, uncrushed gravels of lunar anorthosite were exposed to a neutral Xe-rich atmosphere. Infrared reflectance spectrometry of processed, and unprocessed, samples shows a shift in the anorthosite's peak of the former, possibly corresponding to chemical Xe bonding. This phenomenon could explain the difficulties met for forty years when investigating a lunar primordial xenon component in anorthosites. However, our high precision Xe isotope analysis shows a systematic trend toward depletion in the heavy Xe isotopes ( (super 134) Xe and (super 136) Xe) not seen before. This leads us to make a tantalising parallel between the indigenous component in theses samples and primordial U-Xe, inferred on theoretical ground to be the precursor of atmospheric Xe but never clearly identified. JF - American Geophysical Union Fall Meeting AU - Bekaert, David Vincent AU - Avice, Guillaume AU - Marty, Bernard AU - Gudipati, Murthy S AU - Henderson, Bryana L AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P11A EP - 2063 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1844922382?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Searching+for+indigenous+noble+gases+in+the+Moon%3B+vacuum+crushing+of+vesicular+basalt+15016+and+stepwise+heating+of+anorthosites+60025%2C+60215+and+65315+aliquots&rft.au=Bekaert%2C+David+Vincent%3BAvice%2C+Guillaume%3BMarty%2C+Bernard%3BGudipati%2C+Murthy+S%3BHenderson%2C+Bryana+L%3BAnonymous&rft.aulast=Bekaert&rft.aufirst=David&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Explanation of Europa's unusual polarization properties; the regolith is sub-micron, fine-grained, high porosity material AN - 1844922369; 2016-100878 AB - For several decades, unusual reflectance and polarization phase curves have been reported on Europa by experienced ground based astronomers (Rosenbush et al., 1997, 2015). The observed reflectance phase curve is consistent with the phase curves reported in the laboratory in fine grained particulate media (Nelson et al., 2000, 2002, Shkuratov et al., 2002). Shkuratov et al. (2002) also measured polarization properties of fine grained media showing that they relate to the coherent backscatter enhancement phenomenon and are consistent with the astronomical data. We have reconfigured a goniometric photopolarimeter (GPP) (Nelson et al., 2000, 2002) to measure in the laboratory the polarization phase curves of highly reflective particulate materials that simulate the Europa's predominately water ice regolith. We apply the Helmholtz Reciprocity Principle - we present our samples with linearly polarized light and measure the change in the intensity of the reflected component with phase angle from 0.05 to 15 degrees. This is physically equivalent to the astronomical polarization measurements. We report here the polarization phase curves for a suite of high albedo particulates of size 0.1100km from their sources, drifting ash plumes, often above meteorological clouds, are not easily detected from conventional remote sensing platforms, save deriving their quantitative characteristics, such as mass density. Quantitative interpretation of these observations depends on a priori knowledge of the spectral optical properties of the ash in UV (>0.3mu m) and TIR wavelengths (>10mu m). Incorrect assumptions about the optical properties result in large errors in inferred column mass loading and size distribution, which misguide operational ash forecasts. Similarly, simulating ash properties in global climate models also requires some knowledge of optical properties to improve aerosol speciation. Recent research has identified a wide range in volcanic ash optical properties among samples collected from the ground after different eruptions. The database of samples investigated remains relatively small, and measurements of optical properties at the relevant particle sizes and spectral channels are far from complete. Generalizing optical properties remains elusive, as does establishing relationships between ash composition and optical properties, which are essential for satellite retrievals. We are building a library of volcanic ash optical and microphysical properties. In this presentation we show preliminary results of the measured ash properties. We invite discussion of all aspects essential for building an optical ash database that can be used by modeling and remote sensing communities. If you have samples that you would like included, we would welcome their donation. Please visit the poster or email the authors. JF - American Geophysical Union Fall Meeting AU - Whelley, Patrick AU - Colarco, Peter Richard AU - Aquila, Valentina AU - Krotkov, Nikolay Anatoly AU - Bleacher, Jacob E AU - Garry, William Brent AU - Young, Kelsey E AU - Lima, Adrianna R AU - Martins, Jose Vanderlei AU - Carn, Simon A AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract PA43C EP - 2194 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1844922217?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Optical+properties+of+volcanic+ash%3B+improving+remote+sensing+observations&rft.au=Whelley%2C+Patrick%3BColarco%2C+Peter+Richard%3BAquila%2C+Valentina%3BKrotkov%2C+Nikolay+Anatoly%3BBleacher%2C+Jacob+E%3BGarry%2C+William+Brent%3BYoung%2C+Kelsey+E%3BLima%2C+Adrianna+R%3BMartins%2C+Jose+Vanderlei%3BCarn%2C+Simon+A%3BAnonymous&rft.aulast=Whelley&rft.aufirst=Patrick&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Composition, seasonal change and bathymetry of Ligeia Mare, Titan, derived from its 2.2-cm thermal emission AN - 1844921977; 2016-100900 AB - For the last 10 years, the Cassini RADAR has been exploring Saturn's moon Titan, the only planetary body besides Earth whose surface presently exhibits significant accumulations of liquids in the forms of lakes and seas. In particular, the passive Radiometer that is incorporated in this instrument has been recording the 2.2 cm-wavelength thermal emission from Titan's three seas. Radiometry observations provide new information beyond the active radar reflection data. In this paper, we analyze the radiometry observations collected from Feb. 2007 to July 2013 over one of these seas, Ligeia Mare, with the goal of providing constrains on its liquid composition, seafloor nature, bathymetry, and dynamics. In light of the two-layer model we have developed for this analysis, we find that the dielectric constant of the sea liquid is most likely smaller than 1.8, suggesting that the composition of Ligeia Mare is dominated by liquid methane rather than liquid ethane (although a ternary methane-ethane-nitrogen mixture cannot be ruled out). This result is further supported by the value we infer for the liquid loss tangent of 3-5X10-5. This value is in agreement with the one first published by Mastrogiuseppe et al. (2014) based on active radar observation. A high methane concentration suggests that Ligeia Mare is either a sea from which ethane has been removed by crustal interaction, or a sea primarily fed by methane-rich precipitation, or both. For the seafloor, a dielectric constant of 2.6-2.9+ or -0.9 is determined. Though this result is not very constraining, we favor a scenario where the floor of Ligeia Mare is covered by a sludge of compacted and possibly nitrile-rich organic material formed by the deposition of photochemical haze or by rain-washing of the nearby shores. These results are then used to convert the radiometry mosaic of Ligeia Mare into a qualitative low-resolution bathymetry map. Lastly, we establish limits on the physical temperature variation of the sea between Feb. 2007 to July 2013, namely less than 2 K, providing a constraint on the relative amounts of solar heating and evaporative cooling currently being explored in ocean circulation models. JF - American Geophysical Union Fall Meeting AU - Le Gall, Alice Anne AU - Malaska, Michael J AU - Lorenz, Ralph D AU - Janssen, Michael A AU - Tokano, Tetsuya AU - Hayes, Alexander AU - Lunine, Jonathan I AU - Veyssiaere, Gaelle AU - Mastrogiuseppe, Marco AU - Karatekin, Ozgur AU - Encrenaz, Pierre AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P12B EP - 03 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1844921977?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Composition%2C+seasonal+change+and+bathymetry+of+Ligeia+Mare%2C+Titan%2C+derived+from+its+2.2-cm+thermal+emission&rft.au=Le+Gall%2C+Alice+Anne%3BMalaska%2C+Michael+J%3BLorenz%2C+Ralph+D%3BJanssen%2C+Michael+A%3BTokano%2C+Tetsuya%3BHayes%2C+Alexander%3BLunine%2C+Jonathan+I%3BVeyssiaere%2C+Gaelle%3BMastrogiuseppe%2C+Marco%3BKaratekin%2C+Ozgur%3BEncrenaz%2C+Pierre%3BAnonymous&rft.aulast=Le+Gall&rft.aufirst=Alice&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Topographic constraints on the evolution and connectivity of Titan's lacustrine basins AN - 1844920815; 2016-100918 AB - The topographic information provided by Cassini RADAR Altimetry, SAR Topography, and stereo radargrammetry has opened new doors for Titan research by allowing the quantitative analysis of morphologic form. Using these datasets, we investigate the three-dimensional morphology of Titan's lacustrine basins in order to address their interconnectivity and provide observables that will constrain plausible formation mechanism. Using altimetry measurements, we will show that the liquid elevations of Titan's maria share, to within measurement error, the same equipotential surface. The liquid elevations of several smaller lakes, however, are several hundreds above sea level, suggesting that they exist in isolated or perched basins. However, within a given topographic basin, the floor elevations of empty lake floors are always higher than the local liquid elevation, suggesting local subsurface connectivity. Furthermore, basins with floors closer to the local phreatic surface appear brighter to both nadir and off-nadir microwave observations than those that are more elevated, indicating a potential change in composition. The majority of Titan's lakes reside in sharp edged depressions whose planform curvature suggests expansion through uniform scarp retreat. Many, but not all, of these basins exhibit flat floors and hundred-meter scale raised rims that present a challenge to proposed formation models. The basins are often topographically closed with no evidence for inflow or outflow channels at the 300 m resolution of Cassini SAR images. The implications of these observations will be discussed in the context of common basin formation models, including karst, organic diapirs, periglacial processes (e.g., pingos, thaw lakes, and kettle holes), cryovolcanic processes (e.g., laccoliths, maars, and calderas), craters, gas pockmarks, and sublimation. We will conclude that dissolution (e.g., karst) or pressurized gas release (e.g., gas pockmarks) mechanisms can best match the observed constraints, but that challenges still exist in the interpretation of formation processes and materials. JF - American Geophysical Union Fall Meeting AU - Hayes, Alexander G, Jr AU - Birch, Samuel P AU - Dietrich, William E AU - Howard, Alan D AU - Kirk, Randolph L AU - Mastrogiuseppe, Marco AU - Michaelides, Roger J AU - Moore, Jeffrey M AU - Mitchell, Karl L AU - Poggiali, Valerio AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P13B EP - 2134 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1844920815?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Topographic+constraints+on+the+evolution+and+connectivity+of+Titan%27s+lacustrine+basins&rft.au=Hayes%2C+Alexander+G%2C+Jr%3BBirch%2C+Samuel+P%3BDietrich%2C+William+E%3BHoward%2C+Alan+D%3BKirk%2C+Randolph+L%3BMastrogiuseppe%2C+Marco%3BMichaelides%2C+Roger+J%3BMoore%2C+Jeffrey+M%3BMitchell%2C+Karl+L%3BPoggiali%2C+Valerio%3BAnonymous&rft.aulast=Hayes&rft.aufirst=Alexander&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Jupiter's migration and the hydration of the early inner solar system AN - 1844920711; 2016-101083 AB - Determining the timing, flux and source of water accretion in the early solar system is important for understanding planet formation and habitability, and for constraining models of the movements of the giant planets during terrestrial planet formation. Angrite meteorites are ideal for studying early solar system processes; they sample one of the oldest planetesimals. Angrites are depleted in volatile elements compared to Earth. Plotting condensation temperature vs normalized mantle abundance, Na and K are depleted in the angrite parent body (APB) compared to Earth, yet the APB has an elevated Rb/Na (see Fig). To elucidate this inconsistency, we examined the volatile elements H, C, F, and Cl because these elements have 50% condensation temperatures ranging from 40 to 948 K. Here we report measurements of volatile and major element concentrations in olivines from D'Orbigny and Sahara 99555. Our olivine major, minor and volatile data closely matches a forward fractional crystallization model, which means (1) post crystallization diffusion of H is minor and (2) we were able to calculate the H, C, F, and Cl abundances of the APB melt. We are able to reproduce the volatile metal depletion trend of the APB and its relative volatile element enrichment from our H, C, F, and Cl data in combination with published data by adding approximately 0.3% carbonaceous chondrites to a volatile-poor reservoir. The antiquity of angrites in combination with their volatile contents demonstrates that inner solar system bodies accreted water and volatile elements very early. The kinks in the volatile element depletion diagram (see fig) suggest that both volatile-poor and volatile-rich components were accreted to the APB. One mechanism for large scale mixing in the inner solar system leading to early accretion of volatiles is a giant planet-migration event. The "Grand Tack" is a dynamic early solar system model that predicts that carbonaceous chondrite material entered the initially dry inner solar system at some point during planet formation. It provides one possible mechanism for the transport of volatile-rich material into the inner solar system. Our results constrain the timing of volatile addition and, therefore, provide a time constraint for the Grand Tack - or for alternative models that explain the addition of volatiles to the inner solar system. JF - American Geophysical Union Fall Meeting AU - Sarafian, Adam AU - Nielsen, Suse AU - Marschall, Horst AU - Gaetani, Glenn A AU - Sarafian, Emily K AU - Hauri, Eric AU - Righter, Kevin AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract V23D EP - 04 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1844920711?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Jupiter%27s+migration+and+the+hydration+of+the+early+inner+solar+system&rft.au=Sarafian%2C+Adam%3BNielsen%2C+Suse%3BMarschall%2C+Horst%3BGaetani%2C+Glenn+A%3BSarafian%2C+Emily+K%3BHauri%2C+Eric%3BRighter%2C+Kevin%3BAnonymous&rft.aulast=Sarafian&rft.aufirst=Adam&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Scientific synergies from the Europa multiple-flyby mission AN - 1844920659; 2016-100933 AB - In May 2015, NASA announced selection of a suite of nine instruments for the Europa mission's scientific payload. The payload consists of five remote sensing instruments that cover the wavelength range from ultraviolet through radar and four in situ instruments that measure fields and particles; moreover, gravity science can be achieved via the telecom system, and valuable scientific data could come from the spacecraft's planned radiation monitoring system. The remote sensing instruments are: an ultraviolet spectrograph (Europa-UVS); a wide-angle and narrow-angle visible camera system (EIS); an infrared spectrometer (MISE); a thermal instrument (E-THEMIS); and an ice-penetrating radar (REASON). The fields and particles instruments are: a magnetometer suite (ICEMAG); a plasma instrument (PIMS); a time-of-flight mass spectrometer (MASPEX); and a dust analyzer (SUDA). Taken together, the payload has the potential to test hypotheses relevant to the composition, interior, and geology of Europa, in order to address the potential habitability of this intriguing moon. This presentation will introduce the Europa mission's instrument suite, while providing an overview of the synergistic science that can come from this mission. JF - American Geophysical Union Fall Meeting AU - Pappalardo, Robert T AU - Prockter, Louise M AU - Senske, David A AU - Retherford, Kurt D AU - Turtle, Elizabeth P AU - Blaney, Diana L AU - Christensen, Philip R AU - Blankenship, Donald D AU - Raymond, Carol A AU - Westlake, Joseph H AU - Waite, Jack H, Jr AU - Kempf, Sascha AU - Collins, Geoffrey C AU - Hand, Kevin P AU - Lunine, Jonathan I AU - McGrath, Melissa A AU - Nimmo, Francis AU - Paty, Carol S AU - Soderblom, Jason M AU - Spencer, John R AU - Solomon, Sean C AU - Paranicas, Chris AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P13E EP - 01 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1844920659?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Scientific+synergies+from+the+Europa+multiple-flyby+mission&rft.au=Pappalardo%2C+Robert+T%3BProckter%2C+Louise+M%3BSenske%2C+David+A%3BRetherford%2C+Kurt+D%3BTurtle%2C+Elizabeth+P%3BBlaney%2C+Diana+L%3BChristensen%2C+Philip+R%3BBlankenship%2C+Donald+D%3BRaymond%2C+Carol+A%3BWestlake%2C+Joseph+H%3BWaite%2C+Jack+H%2C+Jr%3BKempf%2C+Sascha%3BCollins%2C+Geoffrey+C%3BHand%2C+Kevin+P%3BLunine%2C+Jonathan+I%3BMcGrath%2C+Melissa+A%3BNimmo%2C+Francis%3BPaty%2C+Carol+S%3BSoderblom%2C+Jason+M%3BSpencer%2C+John+R%3BSolomon%2C+Sean+C%3BParanicas%2C+Chris%3BAnonymous&rft.aulast=Pappalardo&rft.aufirst=Robert&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Investigating the vertical structure of volcanic clouds using NPP/OMPS limb aerosol observations and the GEOS-5/GOCART model AN - 1844920651; 2016-100982 AB - The explosive eruption of Chile's Calbuco volcano on April 22 (super nd) -23 (super rd) produced large volcanic ash and sulfur dioxide clouds that were observed by satellites for over a week. The volcanic clouds were reported to have spanned a large range of altitudes, from 12 km to greater than 20 km. This is confirmed by the vertical profiles of aerosols observed by the NPP/OMPS Limb Profiler, which have a frequency and sensitivity allowing for a thorough look into the evolving vertical structure of the volcanic clouds. The volcanic cloud aerosol signature in the OMPS Limb profiles can be better understood by comparing them to simulations of the volcanic sulfate aerosols, and volcanic ash of various particle sizes. UV and IR satellite observations from the first few days of the eruption are used to constrain the initial source parameters that describe the volcanic eruption (eruption time, duration, mass emitted, injection altitude). The GEOS-5/GOCART model uses these initial source parameters to simulate the transport, deposition, and chemical conversion processes within the volcanic clouds. OMPS limb observations taken during the first days after the eruption provide numerous detailed vertical profiles of the volcanic clouds. The OMPS Limb Aerosol Scattering Index profiles are compared to the GEOS-5/GOCART simulations of sulfate aerosols and volcanic ash to show: the complex vertical structure of the volcanic plumes, the extended presence of aerosols in the volcanic clouds well after the eruption, and how OMPS Limb profiles can be used to constrain different volcanic aerosols in the GEOS-5/GOCART model simulations. JF - American Geophysical Union Fall Meeting AU - Hughes, Eric J AU - Krotkov, Nickolay Anatoly AU - daSilva, Arlindo AU - Gorkavyi, Nick AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract PA43C EP - 2198 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1844920651?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Investigating+the+vertical+structure+of+volcanic+clouds+using+NPP%2FOMPS+limb+aerosol+observations+and+the+GEOS-5%2FGOCART+model&rft.au=Hughes%2C+Eric+J%3BKrotkov%2C+Nickolay+Anatoly%3BdaSilva%2C+Arlindo%3BGorkavyi%2C+Nick%3BAnonymous&rft.aulast=Hughes&rft.aufirst=Eric&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Kinematic model of Titan's rotation from Cassini radar data AN - 1844920575; 2016-100919 AB - The Cassini radar data provide important constraints on the rotational kinematics of Titan. Using 2602 tie-points, spanning 9.82 years, 26 October 2004 to 20 August 2014.we have obtained a number of rotation models, with various levels of complexity and quality of fit to the data. Our simplest model has a fixed orientation spin pole, and a fixed rate of rotation. The spin pole right ascension is (39.35034 0.0031) degree, declination is (83.43825 0.00036) degree, and the mean period of rotation is (15.94547727 ) day. The residual variance of misfit is 1.235 km2. It has long been understood that the rotation of Titan is synchronized to its orbital motion about Saturn, but with the Cassini radar data, we now see that the rate of rotation is not quite uniform. The current time span of the tie-point data is almost exactly 1/3 of Saturn's heliocentric orbital period. We have fitted a series of additional models to the data, each of which has a fixed spin pole, and a rotation rate which is represented by a finite length Fourier series in time. The residual variance drops, with increasing harmonic degree, up to N=8, and then remains nearly constant. The model with 8 cycles in the observation time span has a residual variance of 0.774 km2, or 62% of the uniform rotation case. The maximum deviation of the rotation angle, from the uniform case, amounts to 0.08 degree, or 3.6 km displacement, on the equator. JF - American Geophysical Union Fall Meeting AU - Bills, Bruce G AU - Stiles, Bryan W AU - Hayes, Alexander AU - Birch, Samuel AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P13B EP - 2136 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1844920575?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Kinematic+model+of+Titan%27s+rotation+from+Cassini+radar+data&rft.au=Bills%2C+Bruce+G%3BStiles%2C+Bryan+W%3BHayes%2C+Alexander%3BBirch%2C+Samuel%3BAnonymous&rft.aulast=Bills&rft.aufirst=Bruce&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - REASON for Europa AN - 1844920554; 2016-100935 AB - The science goal of the Europa multiple flyby mission is to "explore Europa to investigate its habitability". One of the primary instruments selected for the scientific payload is a multi-frequency, multi-channel ice penetrating radar system. This "Radar for Europa Assessment and Sounding: Ocean to Near-surface (REASON)" would revolutionize our understanding of Europa's ice shell by providing the first direct measurements of its surface character and subsurface structure. REASON addresses key questions regarding Europa's habitability, including the existence of any liquid water, through the innovative use of radar sounding, altimetry, reflectometry, and plasma/particles analyses. These investigations require a dual-frequency radar (HF and VHF frequencies) instrument with concurrent shallow and deep sounding that is designed for performance robustness in the challenging environment of Europa. The flyby-centric mission configuration is an opportunity to collect and transmit minimally processed data back to Earth and exploit advanced processing approaches developed for terrestrial airborne data sets. The observation and characterization of subsurface features beneath Europa's chaotic surface require discriminating abundant surface clutter from a relatively weak subsurface signal. Finally, the mission plan also includes using REASON as a nadir altimeter capable of measuring tides to test ice shell and ocean hypotheses as well as characterizing roughness across the surface statistically to identify potential follow-on landing sites. We will present a variety of measurement concepts for addressing these challenges. JF - American Geophysical Union Fall Meeting AU - Moussessian, Alina AU - Blankenship, Donald D AU - Plaut, Jeffrey J AU - Patterson, G Wesley AU - Gim, Yonggyu AU - Schroeder, Dustin M AU - Soderlund, Krista M AU - Grima, Cyril AU - Young, Duncan A AU - Chapin, Elaine AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P13E EP - 05 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1844920554?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=REASON+for+Europa&rft.au=Moussessian%2C+Alina%3BBlankenship%2C+Donald+D%3BPlaut%2C+Jeffrey+J%3BPatterson%2C+G+Wesley%3BGim%2C+Yonggyu%3BSchroeder%2C+Dustin+M%3BSoderlund%2C+Krista+M%3BGrima%2C+Cyril%3BYoung%2C+Duncan+A%3BChapin%2C+Elaine%3BAnonymous&rft.aulast=Moussessian&rft.aufirst=Alina&rft.date=2015-12-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Tidal currents between Titan's seas detected by solar glints AN - 1844920481; 2016-100901 AB - Titan is the only place in the solar system, besides Earth, to have stable bodies of liquids on its surface. The three large seas and most of the lakes are located in the northern pole area. They are major reservoirs of organic material. Questions related to the variability in composition of the seas and their interaction can be addressed by dedicated observations. For this purpose, the Visual and Infrared Mapping Spectrometer (VIMS) observed the area between Ligeia Mare and Kraken Mare, Titan's two largest seas on February 12, 2015. The location of the specular point was close to the strait that has been suggested to link Ligeia and Kraken. As demonstrated by previous observations of specular reflections on the lakes and seas, such observations provide a means to assess the presence of liquids and the dynamics of the liquid surface. The VIMS observation provides images of the strait, named Trevize fretum, with a footprint of about 3 km. It shows a remarkable correlation with the radar images, suggesting that no major changes in the level of the seas have occurred in the last 10 years, a third of a Titan year. Very strong values of I/F at 5-mu m suggest specular reflection away from the specular point on the Ligiea outlet. This is consistent with the presence of waves which can be generated by either winds or strong currents between Kraken Mare and Ligeia mare. Such currents can be generated during Titan's orbital motion around Saturn. We have investigated the volume of liquids that would transit through Trevize fretum during a Titan day and have found that the flow would be in a turbulent regime for the value of the mean anomaly at the time of the VIMS observation. Although subsurface communication between the two seas cannot be ruled out, the present observation underlines the role of the strait in providing exchange of fluids between the two large seas. This work has been performed at the Jet Propulsion Laboratory, California Institute of Technology, under contract to NASA. JF - American Geophysical Union Fall Meeting AU - Sotin, Christophe AU - Barnes, Jason W AU - Lawrence, Kenneth J AU - Soderblom, Jason M AU - Audi, Edward AU - Brown, Robert Hamilton AU - Le Mouelic, Stephane AU - Baines, Kevin H AU - Buratti, Bonnie J AU - Clark, Roger Nelson AU - Nicholson, Phil D AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P12B EP - 04 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1844920481?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Tidal+currents+between+Titan%27s+seas+detected+by+solar+glints&rft.au=Sotin%2C+Christophe%3BBarnes%2C+Jason+W%3BLawrence%2C+Kenneth+J%3BSoderblom%2C+Jason+M%3BAudi%2C+Edward%3BBrown%2C+Robert+Hamilton%3BLe+Mouelic%2C+Stephane%3BBaines%2C+Kevin+H%3BBuratti%2C+Bonnie+J%3BClark%2C+Roger+Nelson%3BNicholson%2C+Phil+D%3BAnonymous&rft.aulast=Sotin&rft.aufirst=Christophe&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Curating virtual data collections AN - 1844920450; 2016-100763 AB - NASA's Earth Observing System Data and Information System (EOSDIS) contains a rich set of datasets and related services throughout its many elements. As a result, locating all the EOSDIS data and related resources relevant to particular science theme can be daunting. This is largely because EOSDIS data's organizing principle is affected more by the way they are produced than around the expected end use.Virtual collections oriented around science themes can overcome this by presenting collections of data and related resources that are organized around the user's interest, not around the way the data were produced. Science themes can be: Specific applications (uses) of the data, e.g., landslide prediction Geophysical events (e.g., Hurricane Sandy) A specific science research problem Virtual collections consist of annotated web addresses (URLs) that point to data and related resource addresses, thus avoiding the need to copy all of the relevant data to a single place. These URL addresses can be consumed by a variety of clients, ranging from basic URL downloaders (wget, curl) and web browsers to sophisticated data analysis programs such as the Integrated Data Viewer. Eligible resources include anything accessible via URL: data files: data file URLs data subsets: OPeNDAP, webification or Web Coverage Service URLs data visualizations: Web Map Service data search results: OpenSearch Atom response custom analysis workflows: e.g., Giovanni analysis URL. JF - American Geophysical Union Fall Meeting AU - Lynnes, Christopher AU - Ramapriyan, Hampapuram AU - Leon, Amanda AU - Tsontos, Vardis M AU - Liu, Zhong AU - Shie, C L AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract IN33B EP - 1800 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 15:Miscellaneous UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1844920450?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Curating+virtual+data+collections&rft.au=Lynnes%2C+Christopher%3BRamapriyan%2C+Hampapuram%3BLeon%2C+Amanda%3BTsontos%2C+Vardis+M%3BLiu%2C+Zhong%3BShie%2C+C+L%3BAnonymous&rft.aulast=Lynnes&rft.aufirst=Christopher&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - "Bundle data" approach at GES DISC targeting natural hazards AN - 1844920424; 2016-100781 AB - Severe natural phenomena such as hurricane, volcano, blizzard, flood and drought have the potential to cause immeasurable property damages, great socioeconomic impact, and tragic loss of human life. From searching to assessing the "Big", i.e., massive and heterogeneous scientific data (particularly, satellite and model products) in order to investigate those natural hazards, it has, however, become a daunting task for Earth scientists and applications researchers, especially during recent decades. The NASA Goddard Earth Sciences Data and Information Service Center (GES DISC) has served "Big" Earth science data, and the pertinent valuable information and services to the aforementioned users of diverse communities for years. In order to help and guide our users to online readily (i.e., with a minimum effort) acquire their requested data from our enormous resource at GES DISC for studying their targeted hazard/event, we have thus initiated a "Bundle Data" approach in 2014, first targeting the hurricane event/topic. We have recently worked on new topics such as volcano and blizzard. The "bundle data" of a specific hazard/event is basically a sophisticated integrated data package consisting of a series of proper datasets containing a group of relevant ("knowledge-based") data variables readily accessible to users via a system-prearranged table linking those data variables to the proper datasets (URLs). This online approach has been developed by utilizing a few existing data services such as Mirador as search engine; Giovanni for visualization; and OPeNDAP for data access, etc. The online "Data Cookbook" site at GES DISC is the current host for the "bundle data". We are now also planning on developing an "Automated Virtual Collection Framework" that shall eventually accommodate the "bundle data", as well as further improve our management in "Big Data". JF - American Geophysical Union Fall Meeting AU - Shie, C L AU - Shen, S AU - Kempler, Steven J AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract IN51A EP - 1788 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1844920424?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=%22Bundle+data%22+approach+at+GES+DISC+targeting+natural+hazards&rft.au=Shie%2C+C+L%3BShen%2C+S%3BKempler%2C+Steven+J%3BAnonymous&rft.aulast=Shie&rft.aufirst=C&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - EarthCube Integration and Test Environment (ECITE); an environment to verify, validate, integrate and demonstrate EarthCube technology components AN - 1844919931; 2016-100783 AB - NSF EarthCube is building a community-driven cyberinfrastructure that supports standards for interoperability, infuses advanced technologies to improve and facilitate interdisciplinary research, and helps educate scientists in the emerging practices of digital scholarship, data and software stewardship, and open science. A Testbed Working Group (TWG) was formed by the EarthCube's Technology and Architecture Committee, and is working with the EarthCube and user communities to define and design a testbed that will facilitate the integration of separately funded EarthCube components and promote collaborative planning, testing and integration of technologies. Specifically, the testbed seeks to: Serve as a common ground for prototyping, testing,integration and preservation of EarthCube components and products; Facilitate verification and validation of technologies, use cases, architecture design, components, scalability, interface specifications and standards; Provide a platform for demonstration and showcasing of EarthCube technologies for science users, technologists and the broader geosciences community. This talk gives a brief overview of the role, activities and accomplished achieved by the TWG, as well as the requirements and design developed to drive the implementation of a sustainable EarthCube testbed. JF - American Geophysical Union Fall Meeting AU - Fils, D AU - Law, Emily AU - Keiser, K AU - Middleton, D AU - Pearlman, J AU - Stults, M AU - MacDermaid, Chris AU - Yang, C P AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract IN51C EP - 01 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 15:Miscellaneous UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1844919931?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=EarthCube+Integration+and+Test+Environment+%28ECITE%29%3B+an+environment+to+verify%2C+validate%2C+integrate+and+demonstrate+EarthCube+technology+components&rft.au=Fils%2C+D%3BLaw%2C+Emily%3BKeiser%2C+K%3BMiddleton%2C+D%3BPearlman%2C+J%3BStults%2C+M%3BMacDermaid%2C+Chris%3BYang%2C+C+P%3BAnonymous&rft.aulast=Fils&rft.aufirst=D&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-12-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Two-phase convection in the high-pressure ice layer of the large icy moons; geodynamical implications AN - 1840622195; 2016-098486 AB - The H (sub 2) O layers of large icy satellites such as Ganymede, Callisto, or Titan probably include a liquid water ocean sandwiched between the deep high-pressure ice layer and the outer ice I shell. It has been recently suggested that the high-pressure ice layer could be decoupled from the silicate core by a salty liquid water layer. However, it is not clear whether accumulation of liquids at the bottom of the high-pressure layer is possible due to positive buoyancy of water with respect to high-pressure ice. Numerical simulation of this two-phase (i.e. ice and water) problem is challenging, which explains why very few studies have self-consistently handled the presence and transport of liquids within the solid ice. While using a simplified description of water production and transport, it was recently showed in that (i) a significant fraction of the high-pressure layer reaches the melting point and (ii) the melt generation and its extraction to the overlying ocean significantly influence the global thermal evolution and interior structure of the large icy moons. Here, we treat the high-pressure ice layer as a compressible mixture of solid ice and liquid water. Several aspects are investigated: (i) the effect of the water formation on the vigor of solid-state convection and its influence on the amount of heat that is transferred from the silicate mantle to the ocean; (ii) the fate of liquids within the upper thermal boundary layer--whether they freeze or reach the ocean; and (iii) the effect of salts and volatile compounds (potentially released from the rocky core) on the melting/freezing processes. Investigation of these aspects will allow us to address the thermo-chemical evolution of the internal ocean which is crucial to evaluate the astrobiological potential of large icy moons. This work has been performed at the Jet Propulsion Laboratory, California Institute of Technology, under contract to NASA. JF - American Geophysical Union Fall Meeting AU - Kalousova, Klara AU - Sotin, Christophe AU - Tobie, Gabriel AU - Choblet, Gael AU - Grasset, Olivier AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P31C EP - 2078 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840622195?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Cross+calibration+of+GCR+spectrum%2C+orbital+and+in-situ+planetary+neutron+detections+by+Monte+Carlo+simulations%3B+revisiting+Apollo+17+LPNE+measurement&rft.au=Murray%2C+Joseph%3BSu%2C+Jao+Jang%3BSagdeev%2C+Roald%3BChin%2C+Gordon%3BMcClanahan%2C+T%3BLivengood%2C+T%3BStarr%2C+R+D%3BEvans%2C+L+G%3BAnonymous&rft.aulast=Murray&rft.aufirst=Joseph&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-11-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Mars gravity field and upper atmosphere from MGS, Mars Odyssey, and MRO AN - 1840622190; 2016-098545 AB - The NASA orbital missions Mars Global Surveyor (MGS), Mars Odyssey (ODY), and Mars Reconnaissance Orbiter (MRO) have been exploring and monitoring the planet Mars since 1997. MGS executed its mapping mission between 1999 and 2006 in a frozen sun-synchronous, near-circular, polar orbit with the periapsis altitude at approximately 370 km and the dayside equatorial crossing at 2 pm Local Solar Time (LST). The spacecraft was equipped with onboard instrumentation to acquire radio science data and to measure spacecraft ranges to the Martian surface (Mars Orbiter Laser Altimeter). These measurements resulted in static and time-varying gravity field and high-resolution global topography of the planet. ODY and MRO are still orbiting about Mars in two different sun-synchronous orbits, providing radio tracking data that indirectly measure both the static and time-varying gravity field and the atmospheric density. The orbit of ODY has its periapsis at approximately 390 km altitude and descending node at 4-5 pm LST. However, the spacecraft also collected measurements at lower altitudes ( approximately 220 km) in 2002 prior to the mapping phase. Since November 2006, MRO is in a low-altitude orbit with a periapsis altitude of 255 km and descending node at 3 pm LST. Radio data from MRO help improve the resolution of the static gravity field and measure the mass distribution of the polar caps, but the atmospheric drag at those altitudes may limit the benefits of these radio tracking observations. We present a combined solution of the Martian gravity field to degree and order 110 and atmospheric density profiles with radio tracking data from MGS, ODY and MRO. The gravity field solution is combined with the MOLA topography yielding an updated map of Mars crustal thickness. We also show our solution of the Love number k2 and time-variable gravity zonal harmonics (C20 and C30, in particular). The recovered atmospheric density profiles may be used in atmospheric models to constrain the long-term variability of the constituents in the upper atmosphere. JF - American Geophysical Union Fall Meeting AU - Genova, Antonio AU - Goossens, Sander J AU - Lemoine, Frank G AU - Mazarico, Erwan M AU - Neumann, Gregory A AU - Smith, David E AU - Zuber, Maria T AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P34A EP - 07 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840622190?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Mars+gravity+field+and+upper+atmosphere+from+MGS%2C+Mars+Odyssey%2C+and+MRO&rft.au=Genova%2C+Antonio%3BGoossens%2C+Sander+J%3BLemoine%2C+Frank+G%3BMazarico%2C+Erwan+M%3BNeumann%2C+Gregory+A%3BSmith%2C+David+E%3BZuber%2C+Maria+T%3BAnonymous&rft.aulast=Genova&rft.aufirst=Antonio&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-11-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Calibration of mercury laser altimeter data using digital elevation models derived from stereo image pairs AN - 1840622153; 2016-098584 AB - Knowledge of Mercury's topography is crucial to understanding Mercury's complex geology and history, as well as its current rotation state. From onboard the MESSENGER spacecraft, the Mercury Laser Altimeter (MLA) made around 26 million measurements of Mercury's topography, with radial and horizontal accuracies of approximately 10 m and approximately 100 m, respectively. Prior to orbit insertion in 2011, MESSENGER conducted three gravity-assist flybys of Mercury. During the January and October 2008 flybys, MLA made its first altimetric measurements, but the radial and horizontal accuracies were respectively limited to approximately 100 and approximately 1000 meters due to uncertainties in the spacecraft and planetary ephemerides. To reduce these geolocation uncertainties, the MLA flyby data have been compared to images taken by the Mercury Dual Imaging System (MDIS), another instrument on MESSENGER. Stereo image pairs acquired by MDIS were selected from a database of over 500,000 image pairs located within 5 degrees of the equator. The selected stereo pairs have high surface resolutions ( approximately 200 m/pixel), large overlap areas (overlap ratio >0.3), and well-matched illumination conditions. Using the NASA Ames Stereo Pipeline, digital elevation models (DEMs) were constructed from the image pairs that contained MLA flyby data points. We then ran an alignment program on these DEMs to match included MLA altimetry bounce points as closely as possible to the DEM surfaces. The resulting estimated track displacements were aggregated, and the general trends of these displacements can be used to perform a full-flyby orbit adjustment. Such an adjustment would enable more reliable determination of Mercury's surface elevation and MESSENGER's trajectory during the 2008 flybys. Accurate elevation measurements from these flybys are especially important because they passed over the southern hemisphere, where MLA coverage from the orbital mission is sparse. Calibration of these MLA data will improve our knowledge of Mercury's orientation and equatorial topography. JF - American Geophysical Union Fall Meeting AU - Bauer, Rebecca Suzanne AU - Barker, Michael Kenneth AU - Mazarico, Erwan M AU - Neumann, Gregory A AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P41C EP - 2079 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840622153?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Calibration+of+mercury+laser+altimeter+data+using+digital+elevation+models+derived+from+stereo+image+pairs&rft.au=Bauer%2C+Rebecca+Suzanne%3BBarker%2C+Michael+Kenneth%3BMazarico%2C+Erwan+M%3BNeumann%2C+Gregory+A%3BAnonymous&rft.aulast=Bauer&rft.aufirst=Rebecca&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-11-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - The volcanic history of Mars and influences on carbon outgassing AN - 1840621734; 2016-098495 AB - Exploration of Mars has revealed some of the most impressive volcanic landforms found throughout the solar system. Volatiles outgassed from volcanoes were likely to have strongly influenced atmospheric chemistry and affected the Martian climate. On Earth the role of carbon involved in volcanic outgassing is strongly influenced by tectonic setting, with the greatest weight percent contributions coming from partial mantle melts associated with hot spot volcanism. Most martian volcanic centers appear to represent this style of volcanism. Thus, one important factor in understanding the martian carbon cycle through time is understanding this volatile's link to the planet's volcanic history. The identified volcanic constructs on Mars are not unlike those of the Earth suggesting similar magmatic and eruptive processes. However, the dimensions of many martian volcanic features are significantly larger. The distribution of volcanoes and volcanic deposits on Mars are not spatially or temporally uniform. Large volcanoes (>100 km diameter) are spatially concentrated in volcanic provinces that likely represent focused upwellings or zones of crustal weakness that enabled magma ascension. Smaller (10s km diameters) volcanoes such as cones, low shields and fissures are often grouped into fields and their lava flows coalesce to produce low slope plains. In some cases plains lava fields are quite extensive with little to no evidence for the volcanic constructs. Although martian volcanism appears to have been dominated by effusive eruptions with likely contributions from passive degassing from the interior, explosive volcanic centers and deposits are known to exist. After the development of a Martian crust the planet's volcanic style appears to have evolved from early explosive activity to effusive activity centered at major volcanoes to effusive distributed activity in fields. However, questions remain as to whether or not these styles significantly overlapped in time and if so, why? As scientists continue to learn more about carbon's role in terrestrial volcanism, it is reasonable to question how and how much carbon was involved in different styles of Martian volcanic activity and how carbon and other volatiles have affected the martian atmosphere and climate through time. JF - American Geophysical Union Fall Meeting AU - Bleacher, Jacob E AU - Whelley, Patrick L AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P31F EP - 03 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840621734?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=The+volcanic+history+of+Mars+and+influences+on+carbon+outgassing&rft.au=Bleacher%2C+Jacob+E%3BWhelley%2C+Patrick+L%3BAnonymous&rft.aulast=Bleacher&rft.aufirst=Jacob&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-11-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Highlight on the indigenous organic molecules detected on Mars by SAM and potential sources of artifacts and backgrounds generated by the sample preparation AN - 1840621444; 2016-098520 AB - Among the experiments which explore the martian soil aboard the Curiosity Rover, SAM experiment is mainly dedicated to the search for indigenous organic compounds. To reach its goals SAM can operate in different analysis modes: Pyrolysis-GC-MS and Pyrolysis-MS (EGA). In addition SAM includes wet chemistry experiments to supports extraction of polar organic compounds from solid samples that improves their detection either by increasing the release of chemical species from solid sample matrices, or by changing their chemical structure to make compounds more amenable to gas chromatography mass spectrometry (GCMS). The two wet chemistry experimental capabilities of SAM provide alternatives to the nominal inert-thermal desorption/pyrolysis analytical protocol and are more aptly suited for polar components: MTBSTFA derivatization and TMAH thermochemolysis. Here we focus on the MTBSTFA derivatization experiment. In order to build a support used to help the interpretation of SAM results, we have investigated the artifacts and backgrounds sources generated by the all analysis process: Solid sample were heated up to approximately 840 degrees C at a rate of 35 degrees C/min under He flow. For GC analyses, the majority of the gas released was trapped on a hydrocarbon trap (Tenax (super R) ) over a specific temperature range. Adsorbed volatiles on the GC injection trap (IT) were then released into the GC column (CLP-MXT 30 mX0.25 mm x 0.25 mu m) by rapidly heating the IT to 300 degrees C. Then, in order better understand the part of compounds detected coming from internal reaction we have performed several lab experiments to mimic the SAM device: Among the sources of artifact, we test: (1) the thermal stability and the organic material released during the degradation of Tenax(Registered) and carbosieve, (2) the impact of MTBSTFA and a mixture of DMF and MTBSTFA on the adsorbent, (3) the reaction between the different adsorbents (Tenax (super R) and Carbosieve) and calcium perchlorate and then (4) the sources and molecules that may constitute organic material precursors sources. JF - American Geophysical Union Fall Meeting AU - Buch, Arnaud AU - Belmahdi, Imene AU - Szopa, Cyril AU - Freissinet, Caroline AU - Glavin, Daniel Patrick AU - Coll, Patrice J AU - Cabane, Michel AU - Millan, Maeva AU - Eigenbrode, Jennifer L AU - Navarro-Gonzalez, Rafael AU - Stern, Jennifer C AU - Pinnick, Veronica T AU - Coscia, David AU - Teinturier, Sanuel AU - Stambouli, Moncef AU - Dequaire, Tristan AU - Mahaffy, Paul R AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P33A EP - 2124 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840621444?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Highlight+on+the+indigenous+organic+molecules+detected+on+Mars+by+SAM+and+potential+sources+of+artifacts+and+backgrounds+generated+by+the+sample+preparation&rft.au=Buch%2C+Arnaud%3BBelmahdi%2C+Imene%3BSzopa%2C+Cyril%3BFreissinet%2C+Caroline%3BGlavin%2C+Daniel+Patrick%3BColl%2C+Patrice+J%3BCabane%2C+Michel%3BMillan%2C+Maeva%3BEigenbrode%2C+Jennifer+L%3BNavarro-Gonzalez%2C+Rafael%3BStern%2C+Jennifer+C%3BPinnick%2C+Veronica+T%3BCoscia%2C+David%3BTeinturier%2C+Sanuel%3BStambouli%2C+Moncef%3BDequaire%2C+Tristan%3BMahaffy%2C+Paul+R%3BAnonymous&rft.aulast=Buch&rft.aufirst=Arnaud&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-11-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Laser ranging in solar system; technology developments and new science measurement capabilities AN - 1840621199; 2016-098547 AB - Laser Ranging has played a major role in geodetic studies of the Earth over the past 40 years. The technique can potentially be used in between planets and spacecrafts within the solar system to advance planetary science. For example, a direct measurement of distances between planets, such as Mars and Venus would make significant improvements in understanding the dynamics of the whole solar system, including the masses of the planets and moons, asteroids and their perturbing interactions, and the gravity field of the Sun. Compared to the conventional radio frequency (RF) tracking systems, laser ranging is potentially more accurate because it is much less sensitive to the transmission media. It is also more efficient because the laser beams are much better focused onto the targets than RF beams. However, existing laser ranging systems are all Earth centric, that is, from ground stations on Earth to orbiting satellites in near Earth orbits or lunar orbit, and to the lunar retro-reflector arrays deployed by the astronauts in the early days of lunar explorations. Several long distance laser ranging experiments have been conducted with the lidar in space, including a two-way laser ranging demonstration between Earth and the Mercury Laser Altimeter (MLA) on the MESSENGER spacecraft over 24 million km, and a one way laser transmission and detection experiment over 80 million km between Earth and the Mars Orbiting Laser Altimeter (MOLA) on the MGS spacecraft in Mars orbit. A one-way laser ranging operation has been carried out continuously from 2009 to 2014 between multiple ground stations to LRO spacecraft in lunar orbit. The Lunar Laser Communication Demonstration (LLCD) on the LADEE mission has demonstrated that a two way laser ranging measurements, including both the Doppler frequency and the phase shift, can be obtained from the subcarrier or the data clocks of a high speed duplex laser communication system. Plans and concepts presently being studied suggest we may be on the cusp of demonstrating interplanetary laser ranging to bring the future of solar system geodesy and geodynamics into reality. JF - American Geophysical Union Fall Meeting AU - Sun, Xiaoli AU - Smith, David E AU - Zuber, Maria T AU - McGarry, Jan AU - Neumann, Gregory A AU - Mazarico, Erwan M AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P34A EP - 09 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840621199?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Laser+ranging+in+solar+system%3B+technology+developments+and+new+science+measurement+capabilities&rft.au=Sun%2C+Xiaoli%3BSmith%2C+David+E%3BZuber%2C+Maria+T%3BMcGarry%2C+Jan%3BNeumann%2C+Gregory+A%3BMazarico%2C+Erwan+M%3BAnonymous&rft.aulast=Sun&rft.aufirst=Xiaoli&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-11-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Topographic power laws and shape model estimation AN - 1840621011; 2016-098542 AB - Estimation of the shape (topography) of the rocky bodies of the Solar System is essential to the understanding of crustal composition, internal structure, and thermal evolution. Topography obeys an empirical power law as a function of spherical harmonic degree n, whereby the degree variance V(n) is roughly proportional to 1/(n(n+1)). First observed for the Earth, this law has been documented for Mars, Mercury, Moon and Venus. This law is similar to Kaula's law for gravity potential, but with the caveat that gravity predicted from topography must also consider density variations and partial compensation by relief on the crust-mantle interface. Neither power law can be rigorously deduced but the latter is often used a priori as a constraint for regularization of the problem of estimation of coefficients. With the resolution afforded by laser altimetry and satellite-satellite tracking over airless bodies it is feasible to examine gravity and topography to degree 100 and beyond with confidence. However, in the case of topography obtained from sparse occultation measurements, radar ranging, and/or flyby altimetry, even to achieve estimates of low-degree coefficients it is necessary to expand solutions to a maximum degree that the data do not support on a global basis. As a result, the use of a prior constraint is required to avoid the instability of least-squares methods. An example from the occultation measurements of the southern hemisphere of Mercury combined with the northern hemisphere altimetric measurements by the Mercury Laser Altimeter illustrates how the spectral power behavior is a critical constraint on the solution and its error estimation. A simulation of the topography that could be obtained by the Europa Flyby Mission with a laser altimeter demonstrates the ability to extract critical shape parameters from limited observations. JF - American Geophysical Union Fall Meeting AU - Neumann, Gregory A AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P34A EP - 04 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840621011?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Topographic+power+laws+and+shape+model+estimation&rft.au=Neumann%2C+Gregory+A%3BAnonymous&rft.aulast=Neumann&rft.aufirst=Gregory&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-11-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Harnessing Earth observations for disaster application science AN - 1840620982; 2016-096052 AB - Earth observations have made substantive contributions to the understanding of natural hazards, answering key science questions on the mechanisms, processes and dynamics of changes in the land, air and water. This has been achieved through the ability to advance models and interpret the results through maps and assessments. Disaster application science is focused on the two-way flow of data and information between hazard understanding and the knowledge required for disaster response, relief and recovery. This presentation will examine the integration of results from mature science and technology development in areas including optical imagery, synthetic-aperture radar and geodetic sensors, which together provide new levels of situational awareness. Specific examples will be highlighted from the recent Nepal "Gorkha" earthquake. Optical imagery from a host of satellite missions was used to create a comprehensive mosaic across the region, which when analyzed by a global network of volunteer scientists yielded insight into the extent of induced hazards and impacts. In some cases unique day/night band images provided guidance on areas where energy-dependent infrastructure of livelihoods were disrupted. Earthquake modeling and historical trend analysis revealed areas of potential vulnerability and combined with aftershock analysis to guide areas for urgent analysis and action. The combination of SAR and GPS data, innovative integration and processing approaches and nontraditional data integration approaches resulted in damage proxy maps or where combination with airborne photography, field sightings and crowd sourced reports to assess susceptibility to induced hazards (floods and landslides). Opportunities and challenges to build the science and community relationships, harness the earth observations from multiple agencies and institutions and co-develop timely applications to users will be areas for ongoing collaboration and study. Earth observations have made substantive contributions to the understanding of natural hazards, answering key science questions on the mechanisms, processes and dynamics of changes in the land, air and water. This has been achieved through the ability to advance models and interpret the results through maps and assessments. Disaster application science is focused on the two-way flow of data and information between hazard understanding and the knowledge required for disaster response, relief and recovery. This presentation will examine the integration of results from mature science and technology development in areas including optical imagery, synthetic-aperture radar and geodetic sensors, which together provide new levels of situational awareness. Specific examples will be highlighted from the recent Nepal "Gorkha" earthquake. Optical imagery from a host of satellite missions was used to create a comprehensive mosaic across the region, which when analyzed by a global network of volunteer scientists yielded insight into the extent of induced hazards and impacts. In some cases unique day/night band images provided guidance on areas where energy-dependent infrastructure of livelihoods were disrupted. Earthquake modeling and historical trend analysis revealed areas of potential vulnerability and combined with aftershock analysis to guide areas for urgent analysis and action. The combination of SAR and GPS data, innovative integration and processing approaches and nontraditional data integration approaches resulted in damage proxy maps or where combination with airborne photography, field sightings and crowd sourced reports to assess susceptibility to induced hazards (floods and landslides). Opportunities and challenges to build the science and community relationships, harness the earth observations from multiple agencies and institutions and co-develop timely applications to users will be areas for ongoing collaboration and study. JF - American Geophysical Union Fall Meeting AU - Green, David S AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract NH54A EP - 01 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840620982?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Harnessing+Earth+observations+for+disaster+application+science&rft.au=Green%2C+David+S%3BAnonymous&rft.aulast=Green&rft.aufirst=David&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-11-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Muon tomography for geological repositories AN - 1840620314; 2016-096069 AB - Cosmic-ray muons are subatomic particles produced in the upper atmosphere in collisions of primary cosmic rays with atoms in air. Due to their high penetrating power these muons can be used to image the content (primarily density) of matter they pass through. They have already been used to image the structure of pyramids, volcanoes and other objects. Their applications can be extended to investigating the structure of, and monitoring changes in geological formations and repositories, in particular deep subsurface sites with stored CO2. Current methods of monitoring subsurface CO2, such as repeat seismic surveys, are episodic and require highly skilled personnel to operate. Our simulations based on simplified models have previously shown that muon tomography could be used to continuously monitor CO2 injection and migration and complement existing technologies. Here we present a simulation of the monitoring of CO2 plume evolution in a geological reservoir using muon tomography. The stratigraphy in the vicinity of the reservoir is modelled using geological data, and a numerical fluid flow model is used to describe the time evolution of the CO2 plume. A planar detection region with a surface area of 1000 m2 is considered, at a vertical depth of 776 m below the seabed. We find that one year of constant CO2 injection leads to changes in the column density of about 1%, and that the CO2 plume is already resolvable with an exposure time of less than 50 days. The attached figure show a map of CO2 plume in angular coordinates as reconstructed from observed muons. In parallel with simulation efforts, a small prototype muon detector has been designed, built and tested in a deep subsurface laboratory. Initial calibrations of the detector have shown that it can reach the required angular resolution for muon detection. Stable operation in a small borehole within a few months has been demonstrated. JF - American Geophysical Union Fall Meeting AU - Woodward, David AU - Kudryavtsev, Vitaly AU - Gluyas, Jon G AU - Clark, Samantha J AU - Thompson, Lee F AU - Klinger, Joel AU - Spooner, Neil J C AU - Blackwell, Tim B AU - Pal, Sumanta AU - Lincoln, Darren L AU - Paling, Sean M AU - Mitchell, Cathryn N AU - Benton, Chris AU - Coleman, Max L AU - Telfer, Sam AU - Cole, Andrew AU - Nolan, Sam AU - Chadwick, Paula AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract NS21B EP - 1925 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840620314?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Muon+tomography+for+geological+repositories&rft.au=Woodward%2C+David%3BKudryavtsev%2C+Vitaly%3BGluyas%2C+Jon+G%3BClark%2C+Samantha+J%3BThompson%2C+Lee+F%3BKlinger%2C+Joel%3BSpooner%2C+Neil+J+C%3BBlackwell%2C+Tim+B%3BPal%2C+Sumanta%3BLincoln%2C+Darren+L%3BPaling%2C+Sean+M%3BMitchell%2C+Cathryn+N%3BBenton%2C+Chris%3BColeman%2C+Max+L%3BTelfer%2C+Sam%3BCole%2C+Andrew%3BNolan%2C+Sam%3BChadwick%2C+Paula%3BAnonymous&rft.aulast=Woodward&rft.aufirst=David&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-11-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Habitable zone boundaries; implications for our solar system and beyond AN - 1840620274; 2016-098553 AB - The successful completion of NASA's Kepler Mission has led to renewed interest in the definition and boundaries of the circumstellar habitable zone (HZ), where liquid water can be stable on a planet's surface. Goldblatt et al. showed that the runaway greenhouse effect, which defines the inner edge of the HZ, depends critically on absorption coefficients of H (sub 2) O obtained from the new HITEMP database. Kopparapu et al. followed up on this observation by recalculating HZ boundaries using HITEMP coefficients. This caused the inner edge to move out to 0.99 AU in their (fully saturated, cloud-free) 1-D climate model. Leconte et al.then used a 3-D climate model to show that the inner edge moves back in to 0.95 AU when relative humidity and clouds are taken into account. In their model, however, the upper stratosphere remained cold and dry, making it difficult to explain how Venus lost its water. But Leconte et al. only looked at surface temperatures up to approximately 330 K. At somewhat higher surface temperatures (350 K), our own 1-D model predicts that the stratosphere should indeed become wet. Towards the outer edge of the HZ, it now appears that planets should undergo limit cycles involving global glaciation, CO (sub 2) buildup from volcanism, and CO (sub 2) drawdown from weathering. If supplemented with volcanic H (sub 2) , such cycles could explain how early Mars could have been cold much of the time and yet have experienced enough warm periods to carve the observed fluvial features. Results from a new model of this process will be discussed. JF - American Geophysical Union Fall Meeting AU - Kasting, James F AU - Kopparapu, Ravi AU - Harman, Chester AU - Batalha, Natasha E AU - Haqq-Misra, Jacob D AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P34C EP - 01 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840620274?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Habitable+zone+boundaries%3B+implications+for+our+solar+system+and+beyond&rft.au=Kasting%2C+James+F%3BKopparapu%2C+Ravi%3BHarman%2C+Chester%3BBatalha%2C+Natasha+E%3BHaqq-Misra%2C+Jacob+D%3BAnonymous&rft.aulast=Kasting&rft.aufirst=James&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-11-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Sensitivity to uncertainty in asteroid impact risk assessment AN - 1840619763; 2016-095972 AB - The Engineering Risk Assessment (ERA) team at NASA Ames Research Center is developing a physics-based impact risk model for probabilistically assessing threats from potential asteroid impacts on Earth. The model integrates probabilistic sampling of asteroid parameter ranges with physics-based analyses of entry, breakup, and impact to estimate damage areas and casualties from various impact scenarios. Assessing these threats is a highly coupled, dynamic problem involving significant uncertainties in the range of expected asteroid characteristics, how those characteristics may affect the level of damage, and the fidelity of various modeling approaches and assumptions. The presented model is used to explore the sensitivity of impact risk estimates to these uncertainties in order to gain insight into what additional data or modeling refinements are most important for producing effective, meaningful risk assessments. In the extreme cases of very small or very large impacts, the results are generally insensitive to many of the characterization and modeling assumptions. However, the nature of the sensitivity can change across moderate-sized impacts. Results will focus on the value of additional information in this critical, mid-size range, and how this additional data can support more robust mitigation decisions. JF - American Geophysical Union Fall Meeting AU - Mathias, Donovan AU - Wheeler, L AU - Prabhu, Dinesh K AU - Aftosmis, Michael AU - Dotson, J AU - Robertson, D K AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract NH14B EP - 06 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840619763?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Sensitivity+to+uncertainty+in+asteroid+impact+risk+assessment&rft.au=Mathias%2C+Donovan%3BWheeler%2C+L%3BPrabhu%2C+Dinesh+K%3BAftosmis%2C+Michael%3BDotson%2C+J%3BRobertson%2C+D+K%3BAnonymous&rft.aulast=Mathias&rft.aufirst=Donovan&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-11-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Insights into the dynamics of planetary interiors obtained through the study of global distribution of volcanoes; III, Lessons from Io AN - 1840619653; 2016-098510 AB - Clues concerning dynamic aspects of planetary interiors can be obtained through the characterization of volcano distribution at a global scale. On past years, results obtained from global distribution of volcanism on Earth and Venus have been presented, and compared with each other. In this work, the global distribution of volcanism on Io (the innermost of Jupiter's Galilean satellites and the most volcanically active body in the Solar System) is explored using the same tools. Volcanic centers on Io can be divided in two groups: The first including positive thermal anomalies, or hotspots, and the second formed by volcano-tectonic depressions called paterae. Approximately 20% of the documented patera coincide with hotspots, but not all of Io's current volcanic activity is directly associated to paterae. It is uncertain whether hotspots located outside paterae represent volcanic systems still lacking a caldera-like structure, or they represent an entirely different type of volcanism. To account for this source of uncertainty, the analysis reported here was completed on different databases (hotspots, paterae, patera floor units and a combination of hotspots and paterae referred to as volcanic systems). In addition, the distribution of Io's mountains also was studied. As a result, we show that the main clusters of volcanism on Io support the existence of mantle convection patterns that include a combined heating between the asthenosphere and the deep mantle (with the former source being more important, but not necessarily on a 2:1 proportion), takes place at moderate to high Reynolds numbers, and includes some degree of impermeability between the asthenosphere and the mantle. We also show that although the long-wavelength volcano distribution is controlled by the patterns of mantle convection, the asthenosphere serves as a buffer zone where magma is distributed laterally giving place to volcanic activity away from the zones of influence of the hot mantle isotherms. The processes discussed serve to explain the long-wavelength anticorrelation that exists between volcanic activity and mountain building. JF - American Geophysical Union Fall Meeting AU - Canon-Tapia, Edgardo AU - Hamilton, Christopher AU - Lopes, Rosaly M C AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P31H EP - 07 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840619653?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Confidence+Hills+mineralogy+and+CheMin+results+from+base+of+Mt.+Sharp%2C+Pahrump+Hills%2C+Gale+Crater%2C+Mars&rft.au=Cavanagh%2C+P+D%3BBish%2C+D+L%3BBlake%2C+D+F%3BVaniman%2C+D+T%3BMorris%2C+R+V%3BMing%2C+D+W%3BRampe%2C+E+B%3BAchilles%2C+C+N%3BChipera%2C+S+J%3BTreiman%2C+A+H%3BDowns%2C+R+T%3BMorrison%2C+S+M%3BFendrich%2C+K+V%3BYen%2C+A+S%3BGrotzinger%2C+J%3BCrisp%2C+J+A%3BBristow%2C+T+F%3BSarrazin%2C+P+C%3BFarmer%2C+J+D%3BDes+Marais%2C+D+J%3BStolper%2C+Edward+M%3BMorookian%2C+J+M%3BWilson%2C+M+A%3BSpanovich%2C+N%3BAnderson%2C+R+C%3BAnonymous&rft.aulast=Cavanagh&rft.aufirst=P&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-11-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Long-term observations of Jovian mid-infrared aurora, hydrocarbon abundances, and temperature; ground-based and space-based comparison and preparation for Juno AN - 1840619633; 2016-098580 AB - With Juno's approach to Jupiter in 2016 nearing, we report on long term measurements of Jupiter's thermal infrared aurora covering spectral and altitude regions that will complement Juno observational capabilities. Previously acquired spectral data from ground-based observatories as well as by Voyager IRIS and Cassini CIRS during Jupiter flybys will be investigated using current methods and capabilities. The thermal (mid-) IR aurora from Jupiter's polar regions, hydrocarbon abundances, and thermal structure retrieved from the ground and from space-based investigations will be compared and used to illustrate the different capabilities and complementarity of the measurement platforms. We report on the reexamination and re-analysis of hydrocarbon emission spectra from Jupiter obtained using ground-based ultra-high spectral resolution infrared heterodyne spectroscopy (IRHS) and Fourier transform spectroscopy (FTS) from Cassini CIRS during its flyby of Jupiter in 2000-2001 and Voyager IRIS data obtained during flybys in 1979. Measurements with IRHS have been made over 30 years, primarily of ethane near 12 micrometer wavelength. These measurements yield fully resolved individual spectral lines whose shape provides unique information on variability of temperature and abundance. CIRS and IRIS data at coarser spectral resolution provide extended spatial distributions covering a broad spectral region, including abundances and auroral response of hydrocarbon constituents in the 8-13 micrometer spectral region (ethane, methane, ethylene, and acetylene). Analysis shows detailed spatial variability of the primary hydrocarbons in northern latitudes. Temporal changes of the ethane line emission over three solar cycles and comparison of retrievals from ethane data taken contemporaneously during the Cassini flyby by both techniques will be compared and results discussed. From these analyses, the expectation is that the thermal IR auroral emission may be low during the Juno tour at Jupiter Results will be useful for the Juno mission, since it does not have instrumentation in this spectral region and this work provides complementary information and diagnostics to study Jupiter in a spectral region and altitude range not directly probed by Juno. JF - American Geophysical Union Fall Meeting AU - Kostiuk, Theodor AU - Hewagama, Tilak AU - Livengood, Timothy A AU - Fast, Kelly E AU - Bjoraker, Gordon L AU - Carlson, Ronald C AU - Schmuelling, Frank AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P41B EP - 2073 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840619633?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Long-term+observations+of+Jovian+mid-infrared+aurora%2C+hydrocarbon+abundances%2C+and+temperature%3B+ground-based+and+space-based+comparison+and+preparation+for+Juno&rft.au=Kostiuk%2C+Theodor%3BHewagama%2C+Tilak%3BLivengood%2C+Timothy+A%3BFast%2C+Kelly+E%3BBjoraker%2C+Gordon+L%3BCarlson%2C+Ronald+C%3BSchmuelling%2C+Frank%3BAnonymous&rft.aulast=Kostiuk&rft.aufirst=Theodor&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-11-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - The provenance and formation of reduced carbon phases on Mars from the study of Martian meteorites AN - 1840619177; 2016-098494 AB - Organic carbon compounds are essential building blocks of terrestrial life, so the occurrence and origin (biotic or abiotic) of organic compounds on Mars is of great significance. Indeed, the question of Martian organic matter is among the highest priority targets for robotic spacecraft missions in the next decade including the Mars Science Laboratory and Mars 2020. Several Martian meteorites contain organic carbon (i.e., macromolecular reduced carbon-rich material, not necessarily related to biota), but there is little agreement on its origins. Initial hypotheses for the origin of this organic carbon included: terrestrial contamination; chondritic meteoritic input; thermal decomposition of Martian carbonate minerals; direct precipitation from cooling aqueous fluids; and the remains of ancient Martian biota. We report on results from the analysis of 14 martian meteorites and show the distribution of organic phases throughout the samples analyzed. We will present formation scenarios for each of the types of organic matter discovered. These studies when combined show 4 possible pools of reduced carbon on Mars. 1) impact generated graphite in the Tissint meteorite, 2) secondary hydrothermal generated graphite in ALH 84001, 3) primary igneous reduced carbon in 12 Martian meteorites associated with spinel inclusions in olivine and pyroxene 4) and potentially primary hydrothermally formed organic carbon / nitrogen containing organic species in the maskelynite phases of the Tissint meteorite. These studies show that Mars has produced reduced carbon / organic carbon via several mechanisms and reveal that the building blocks of life, if not life itself, are present on Mars. JF - American Geophysical Union Fall Meeting AU - Steele, Andrew AU - McCubbin, Francis M AU - Fries, Marc D AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P31F EP - 02 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840619177?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=The+provenance+and+formation+of+reduced+carbon+phases+on+Mars+from+the+study+of+Martian+meteorites&rft.au=Steele%2C+Andrew%3BMcCubbin%2C+Francis+M%3BFries%2C+Marc+D%3BAnonymous&rft.aulast=Steele&rft.aufirst=Andrew&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-11-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Evolution of the Tharsis region of Mars AN - 1840618640; 2016-098508 AB - The evolution of the Tharsis region includes at least five major stages of Tharsis-related activity, which includes the formation of igneous plateaus, canyon and fault systems, volcanoes, and centers of magmatic-driven tectonism. This activity drove major environmental changes that were recorded in the walls of Valles Marineris, the circum-Chryse outflow channel system, the northern plains, and impact basins such as Argyre, among many other Martian features and landscapes. Environmental change included flooding and associated formation of lakes and oceans in basins such as the prominent northern plains and impact basins such as Argyre. This Tharsis-driven activity also included the formation of glaciers in the southern hemisphere and other landscape features (e.g., alluvial fans, periglacial landforms, gelifluction features including mass wasting, fluvial channels) indicative of an active landscape. At this conference, we will present the details of the evolution of Tharsis, as well as discuss contributing factors to its origin, estimated beginning development, and explanations for its longevity. JF - American Geophysical Union Fall Meeting AU - Anderson, Robert C AU - Dohm, James M AU - Maruyama, Shigenori AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract P31H EP - 05 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840618640?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Evolution+of+the+Tharsis+region+of+Mars&rft.au=Anderson%2C+Robert+C%3BDohm%2C+James+M%3BMaruyama%2C+Shigenori%3BAnonymous&rft.aulast=Anderson&rft.aufirst=Robert&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-11-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Pre-earthquake magnetic pulses AN - 1840618523; 2016-095978 AB - A semiconductor model of rocks is shown to describe unipolar magnetic pulses, a phenomenon that has been observed prior to earthquakes. These pulses are suspected to be generated deep in the Earth's crust, in and around the hypocentral volume, days or even weeks before earth quakes. Their extremely long wavelength allows them to pass through kilometers of rock. Interestingly, when the sources of these pulses are triangulated, the locations coincide with the epicenters of future earthquakes. We couple a drift-diffusion semiconductor model to a magnetic field in order to describe the electromagnetic effects associated with electrical currents flowing within rocks. The resulting system of equations is solved numerically and it is seen that a volume of rock may act as a diode that produces transient currents when it switches bias. These unidirectional currents are expected to produce transient unipolar magnetic pulses similar in form, amplitude, and duration to those observed before earthquakes, and this suggests that the pulses could be the result of geophysical semiconductor processes. JF - American Geophysical Union Fall Meeting AU - Scoville, J AU - Heraud, J A AU - Freund, F T AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract NH21A EP - 1807 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840618523?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Pre-earthquake+magnetic+pulses&rft.au=Scoville%2C+J%3BHeraud%2C+J+A%3BFreund%2C+F+T%3BAnonymous&rft.aulast=Scoville&rft.aufirst=J&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-11-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Prediction of rock falls properties thanks to emitted seismic signal AN - 1832729278; 2016-089469 AB - The seismic signal generated by rockfalls, landslides or avalanches provides an unique tool to detect, characterize and monitor gravitational flow activity, with strong implication in terms of natural hazards. Indeed, as natural flows travel down the slope, they apply stresses on top of the Earth surface, generating seismic waves in a wide frequency band, associated to the different physical processes involved. Our aim is to deduce the granular flow properties from the generated signal. It is addressed here with both laboratory experiments and simulations. In practice, regarding the experimental part, a set-up using a combination of optical and acoustic methods is employed, in order to measure the seismic signal generated by, (i) the impact of beads of different properties, (ii) the collapse of granular columns, over horizontal and sloping substrates. The substrates are made of plates and blocs of different sizes and characteristics. For the first point (i), Farin et al. [2015] have showed that it exists a link between the properties of an impacting bead (mass and velocity) on smooth surfaces and the emitted signal (radiated elastic energy and mean frequency). This demonstrate that it is possible to deduce the impactor properties thanks to the emitted signal. We show here that it is slightly different for rough and erodible surfaces, because of more dissipative processes engaged (friction, grain reorganization, etc). The point (ii) is different from multiple single impacts. We compare experimental situation to a Discrete Elements Method simulation developed by Patrick Richard (IFSTTAR). It computes trajectories of each particle of a granular column collapses, using collisions forces from simplified Hertz's contact model (spring+dashpot) and Verlet's algorithm. We used it to compute synthetic signal generated by the impacts. If the dynamics of beads is well reproduced, waves are different, confirming that "more is different". JF - American Geophysical Union Fall Meeting AU - Bachelet, Vincent AU - Mangeney, Anne AU - de Rosny, Julien AU - Toussaint, Renaud AU - Farin, Maxime AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract NH41A EP - 1790 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832729278?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Prediction+of+rock+falls+properties+thanks+to+emitted+seismic+signal&rft.au=Bachelet%2C+Vincent%3BMangeney%2C+Anne%3Bde+Rosny%2C+Julien%3BToussaint%2C+Renaud%3BFarin%2C+Maxime%3BAnonymous&rft.aulast=Bachelet&rft.aufirst=Vincent&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-10-27 N1 - CODEN - #07548 ER - TY - JOUR T1 - Unmanned airborne system deployment at Turrialba volcano for real time eruptive cloud measurements AN - 1832729155; 2016-089530 AB - The development of small unmanned aerial systems (sUAS) with a variety of instrument packages enables in situ and proximal remote sensing measurements of volcanic plumes, even when the active conditions of the volcano do not allow volcanologists and emergency response personnel to get too close to the erupting crater. This has been demonstrated this year by flying a sUAS through the heavy ash driven erupting volcanic cloud of Turrialba Volcano, while conducting real time in situ measurement of gases over the crater summit. The event also achieved the collection of newly released ash samples from the erupting volcano. The interception of the Turrialba ash cloud occurred during the CARTA 2015 field campaign carried out as part of an ongoing program for remote sensing satellite calibration and validation purposes, using active volcanic plumes. These deployments are timed to support overflights of the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) onboard the NASA Terra satellite on a bimonthly basis using airborne platforms such as tethered balloons, free-flying fixed wing small UAVs at altitudes up to 12.5 Kft ASL within about a 5 km radius of the summit crater. The onboard instrument includes the MiniGas payload which consists of an array of single electrochemical and infrared gas detectors (SO (sub 2) , H (sub 2) S CO (sub 2) ), temperature, pressure, relative humidity and GPS sensors, all connected to an Arduino-based board, with data collected at 1Hz. Data are both stored onboard and sent by telemetry to the ground operator within a 3 km range. The UAV can also carry visible and infrared cameras as well as other payloads, such as a UAV-MS payload that is currently under development for mass spectrometer-based in situ measurements. The presentation describes the ongoing UAV-based in situ remote sensing validation program at Turrialba Volcano, the results of a fly-through the eruptive cloud, as well as future plans to continue these efforts. Work presented here was carried out, in part, at the Jet Propulsion Laboratory, California Institute of Technology, under contract to NASA. JF - American Geophysical Union Fall Meeting AU - Diaz, Jorge Andres AU - Pieri, David C AU - Fladeland, Matthew M AU - Bland, Geoff AU - Corrales, Ernesto AU - Alan, Alfred, Jr AU - Alegria, Oscar AU - Kolyer, Richard AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract NH41E EP - 02 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832729155?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Unmanned+airborne+system+deployment+at+Turrialba+volcano+for+real+time+eruptive+cloud+measurements&rft.au=Diaz%2C+Jorge+Andres%3BPieri%2C+David+C%3BFladeland%2C+Matthew+M%3BBland%2C+Geoff%3BCorrales%2C+Ernesto%3BAlan%2C+Alfred%2C+Jr%3BAlegria%2C+Oscar%3BKolyer%2C+Richard%3BAnonymous&rft.aulast=Diaz&rft.aufirst=Jorge&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-10-27 N1 - CODEN - #07548 ER - TY - JOUR T1 - Characterization of the interior density structure of near Earth objects with muons AN - 1832728626; 2016-089410 AB - Near Earth Objects (NEOs) are a diverse population of short-lived asteroids originating from the main belt and Jupiter family comets. Some have orbits that are easy to access from Earth, making them attractive as targets for science and exploration as well as a potential resource. Some pose a potential impact threat. NEOs have undergone extensive collisional processing, fragmenting and re-accreting to form rubble piles, which may be compositionally heterogeneous (e.g., like 2008 TC3, the precursor to Almahata Sitta). At present, little is known about their interior structure or how these objects are held together. The wide range of inferred NEO macroporosities hint at complex interiors. Information about their density structure would aid in understanding their formation and collisional histories, the risks they pose to human interactions with their surfaces, the constraints on industrial processing of NEO resources, and the selection of hazard mitigation strategies (e.g., kinetic impactor vs nuclear burst). Several methods have been proposed to characterize asteroid interiors, including radar imaging, seismic tomography, and muon imaging (muon radiography and tomography). Of these, only muon imaging has the potential to determine interior density structure, including the relative density of constituent fragments. Muons are produced by galactic cosmic ray showers within the top meter of asteroid surfaces. High-energy muons can traverse large distances through rock with little deflection. Muons transmitted through an Itokawa-sized asteroid can be imaged using a compact hodoscope placed on or near the surface. Challenges include background rejection and correction for variations in muon production with surface density. The former is being addressed by hodoscope design. Surface density variations can be determined via radar or muon limb imaging. The performance of muon imaging is evaluated for prospective NEO interior-mapping missions. JF - American Geophysical Union Fall Meeting AU - Prettyman, Thomas H AU - Sykes, Mark V AU - Miller, Richard S AU - Pinsky, Lawrence S AU - Empl, Anton AU - Nolan, Michael C AU - Koontz, Steven L AU - Lawrence, David J AU - Mittlefehldt, David W AU - Reddell, Brandon D AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract NH11A EP - 1896 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832728626?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Characterization+of+the+interior+density+structure+of+near+Earth+objects+with+muons&rft.au=Prettyman%2C+Thomas+H%3BSykes%2C+Mark+V%3BMiller%2C+Richard+S%3BPinsky%2C+Lawrence+S%3BEmpl%2C+Anton%3BNolan%2C+Michael+C%3BKoontz%2C+Steven+L%3BLawrence%2C+David+J%3BMittlefehldt%2C+David+W%3BReddell%2C+Brandon+D%3BAnonymous&rft.aulast=Prettyman&rft.aufirst=Thomas&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-10-27 N1 - CODEN - #07548 ER - TY - JOUR T1 - Effect of different rock models on hydrocode simulations of asteroid airburst and impact blast AN - 1832728620; 2016-089405 AB - Ground damage estimates from airburst or ground impact of asteroids depend on the shock waves and blast winds emitted. While semi-analytic models exist and hydrocode simulations of cratering are well studied, there is very little literature on the blast waves from asteroids hitting the Earth. The blast waves depend strongly on the energy deposition rate, which in turn depends on the break-up mechanics of the asteroid either during atmospheric entry or on the ground. This presentation will examine the effect of different rock models on the break-up and energy deposition. The simplest models can assign a single rock strength, chosen to match the burst altitude of previously observed airbursts. Such simple models can provide energy deposition curves that match observations reasonably well, but are not representative of the behaviour of real rock masses. We will compare the failure mechanisms and energy deposition of more sophisticated models including effects such as more realistic yield surfaces that account for tensile, shear, and compressive failure strengths, and size dependent features such as cracks, strength distributions, porosity, and variations in internal composition. JF - American Geophysical Union Fall Meeting AU - Robertson, Darrel Kim AU - Mathias, Donovan AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract NH11A EP - 1891 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832728620?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Effect+of+different+rock+models+on+hydrocode+simulations+of+asteroid+airburst+and+impact+blast&rft.au=Robertson%2C+Darrel+Kim%3BMathias%2C+Donovan%3BAnonymous&rft.aulast=Robertson&rft.aufirst=Darrel&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-10-27 N1 - CODEN - #07548 ER - TY - JOUR T1 - Volcano gas measurements from UAS; customization of sensors and platforms AN - 1832723594; 2016-092077 AB - Volcanic eruptions threaten not only the lives and property of local populations, but also aviation worldwide. Volcanic gas release is a key driving force in eruptive activity, and monitoring gas emissions is critical to assessing volcanic hazards, yet most volcanoes are not monitored for volcanic gas emission. Measuring volcanic gas emissions with manned aircraft has been standard practice for many years during eruptive crises, but such measurements are quite costly. As a result, measurements are typically only made every week or two at most during periods of unrest or eruption, whereas eruption dynamics change much more rapidly. Furthermore, very few measurements are made between eruptions to establish baseline emissions. Unmanned aerial system (UAS) measurements of volcanic plumes hold great promise for both improving temporal resolution of measurements during volcanic unrest, and for reducing the exposure of personnel to potentially hazardous conditions. Here we present the results of a new collaborative effort between the US Geological Survey and NASA Ames Research Center to develop a UAS specific for volcano gas monitoring using miniaturized gas sensing systems and a custom airframe. Two miniaturized sensing systems are being built and tested: a microDOAS system to quantify SO (sub 2) emission rates, and a miniature MultiGAS system for measuring in-situ concentrations of CO (sub 2) , SO (sub 2) , and H (sub 2) S. The instruments are being built into pods that will be flown on a custom airframe built from surplus Raven RQ-11. The Raven is one of the smallest UAS (a SUAS), and has the potential to support global rapid response when eruptions occur because they require less crew for operations. A test mission is planned for fall 2015 or spring 2016 at the Crows Landing Airfield in central California. Future measurement locations might include Kilauea Volcano in Hawaii, or Pagan Volcano in the Marianas. JF - American Geophysical Union Fall Meeting AU - Werner, Cynthia A AU - Dahlgren, Robert P AU - Kern, Christoph AU - Kelly, Peter J AU - Fladeland, Matthew M AU - Norton, Katherine AU - Johnson, Matthew S AU - Sutton, A Jeff AU - Elias, Tamar AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract NH43C EP - 1901 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832723594?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Volcano+gas+measurements+from+UAS%3B+customization+of+sensors+and+platforms&rft.au=Werner%2C+Cynthia+A%3BDahlgren%2C+Robert+P%3BKern%2C+Christoph%3BKelly%2C+Peter+J%3BFladeland%2C+Matthew+M%3BNorton%2C+Katherine%3BJohnson%2C+Matthew+S%3BSutton%2C+A+Jeff%3BElias%2C+Tamar%3BAnonymous&rft.aulast=Werner&rft.aufirst=Cynthia&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-10-27 N1 - CODEN - #07548 ER - TY - JOUR T1 - Mercury's crustal magnetic field from low-altitude measurements by MESSENGER AN - 1832723560; 2016-091902 AB - Magnetized rocks can record the history of a planet's magnetic field, a key constraint for understanding interior evolution. From orbital vector magnetic field measurements of Mercury taken by the MESSENGER spacecraft at altitudes below 150 km, we have detected fields indicative of crustal magnetization. Fields from non-crustal sources, which dominate the observations even at low altitudes, were estimated and subtracted from the observations using both magnetospheric models and signal filtering. The resulting high-pass filtered fields have amplitudes of a few to 20 nT. The first low-altitude signals were detected over the Suisei Planitia region and were confirmed by upward continuation to be of crustal origin. At least some contribution from thermoremanent magnetization is required to account for these signals, and we infer a lower bound on the average age of magnetization of 3.7-3.9 Ga on the basis of correlation of crustal magnetic fields with volcanic units of that age range. Ancient field strengths that range from those similar to Mercury's present dipole field to earth-like values are consistent with the magnetic field observations and with the low iron content of Mercury's crust derived from MESSENGER elemental composition data. Here, we extend these initial results with observations obtained at spacecraft altitudes below 60 km at all body-fixed longitudes from approximately 40 degrees N to approximately 75 degrees N. The strongest crustal fields occur in the region 120 degrees E to 210 degrees E, and weaker signals characterize the northern volcanic plains. We test the hypothesis that the longest-wavelength crustal field signals in this region reflect magnetization contrasts between the Caloris basin and the surrounding intercrater plains and circum-Caloris plains. We report the spatial distribution of observed crustal fields, together with magnetization models derived from them and the implications of these models, particularly for the depth distribution of sources compatible with the observations. JF - American Geophysical Union Fall Meeting AU - Johnson, Catherine L AU - Phillips, Roger J AU - Purucker, Michael E AU - Anderson, Brian J AU - Byrne, Paul K AU - Denevi, Brett W AU - Fan, Kevin A AU - Feinberg, Joshua M AU - Hauck, Steven A AU - Head, James W, III AU - Korth, Haje AU - James, Peter B AU - Mazarico, Erwan AU - Neumann, Gregory A AU - Philpott, Lydia C AU - Siegler, Matthew A AU - Strauss, Becky E AU - Tsyganenko, Nikolai A (Nikolay A) AU - Solomon, Sean C AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract GP33A EP - 03 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832723560?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Mercury%27s+crustal+magnetic+field+from+low-altitude+measurements+by+MESSENGER&rft.au=Johnson%2C+Catherine+L%3BPhillips%2C+Roger+J%3BPurucker%2C+Michael+E%3BAnderson%2C+Brian+J%3BByrne%2C+Paul+K%3BDenevi%2C+Brett+W%3BFan%2C+Kevin+A%3BFeinberg%2C+Joshua+M%3BHauck%2C+Steven+A%3BHead%2C+James+W%2C+III%3BKorth%2C+Haje%3BJames%2C+Peter+B%3BMazarico%2C+Erwan%3BNeumann%2C+Gregory+A%3BPhilpott%2C+Lydia+C%3BSiegler%2C+Matthew+A%3BStrauss%2C+Becky+E%3BTsyganenko%2C+Nikolai+A+%28Nikolay+A%29%3BSolomon%2C+Sean+C%3BAnonymous&rft.aulast=Johnson&rft.aufirst=Catherine&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-10-27 N1 - CODEN - #07548 ER - TY - JOUR T1 - Virtual quake and tsunami squares; scenario earthquake and tsunami simulations for a pacific rim GNSS tsunami early warning system AN - 1832723347; 2016-092069 AB - Plans for the first operational prototype for a Pacific Rim Tsunami Early Warning (TEW) system utilizing real-time data from the Global Navigational Satellite System (GNSS) are now gaining momentum. The proposed Pacific Rim TEW prototype may resemble the Japanese Meteorological Society's early warning algorithms and use earthquake parameters rapidly determined from GPS data to select the most similar earthquake and tsunami scenario from a database of precomputed scenarios to guide alerts and disaster response. To facilitate the development of this Pacific Rim TEW system, we have integrated tsunami modeling capabilities into the earthquake simulator Virtual Quake (formerly Virtual California). We will present the first results from coupling the earthquake simulator output (seafloor displacements) with the tsunami modeling method called Tsunami Squares. Combining Virtual Quake and Tsunami Squares provides a highly scalable and flexible platform for producing catalogs of tsunami scenarios for a wide range of simulated subduction zone earthquakes. JF - American Geophysical Union Fall Meeting AU - Schultz, Kasey AU - Yoder, Mark R AU - Sachs, Michael K AU - Heien, Eric M AU - Donnellan, Andrea AU - Rundle, John B AU - Turcotte, Donald L AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract NH43B EP - 1888 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832723347?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Virtual+quake+and+tsunami+squares%3B+scenario+earthquake+and+tsunami+simulations+for+a+pacific+rim+GNSS+tsunami+early+warning+system&rft.au=Schultz%2C+Kasey%3BYoder%2C+Mark+R%3BSachs%2C+Michael+K%3BHeien%2C+Eric+M%3BDonnellan%2C+Andrea%3BRundle%2C+John+B%3BTurcotte%2C+Donald+L%3BAnonymous&rft.aulast=Schultz&rft.aufirst=Kasey&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-10-27 N1 - CODEN - #07548 ER - TY - JOUR T1 - Error covariance calculation for forecast bias estimation in hydrologic data assimilation AN - 1832594915; 771775-4 AB - To date, an outstanding issue in hydrologic data assimilation is a proper way of dealing with forecast bias. A frequently used method to bypass this problem is to rescale the observations to the model climatology. While this approach improves the variability in the modeled soil wetness and discharge, it is not designed to correct the results for any bias. Alternatively, attempts have been made towards incorporating dynamic bias estimates into the assimilation algorithm. Persistent bias models are most often used to propagate the bias estimate, where the a priori forecast bias error covariance is calculated as a constant fraction of the unbiased a priori state error covariance. The latter approach is a simplification to the explicit propagation of the bias error covariance. The objective of this paper is to examine to which extent the choice for the propagation of the bias estimate and its error covariance influence the filter performance. An Observation System Simulation Experiment (OSSE) has been performed, in which ground water storage observations are assimilated into a biased conceptual hydrologic model. The magnitudes of the forecast bias and state error covariances are calibrated by optimizing the innovation statistics of groundwater storage. The obtained bias propagation models are found to be identical to persistent bias models. After calibration, both approaches for the estimation of the forecast bias error covariance lead to similar results, with a realistic attribution of error variances to the bias and state estimate, and significant reductions of the bias in both the estimates of groundwater storage and discharge. Overall, the results in this paper justify the use of the traditional approach for online bias estimation with a persistent bias model and a simplified forecast bias error covariance estimation. Abstract Copyright (2015) Elsevier, B.V. JF - Advances in Water Resources AU - Pauwels, Valentijn R N AU - De Lannoy, Gabrielle J M Y1 - 2015/12// PY - 2015 DA - December 2015 SP - 284 EP - 296 PB - Elsevier, Oxford VL - 86 IS - Part B SN - 0309-1708, 0309-1708 KW - models KW - hydrology KW - errors KW - statistical analysis KW - Kalman filters KW - data assimilation KW - algorithms KW - covariance analysis KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832594915?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Advances+in+Water+Resources&rft.atitle=Error+covariance+calculation+for+forecast+bias+estimation+in+hydrologic+data+assimilation&rft.au=Pauwels%2C+Valentijn+R+N%3BDe+Lannoy%2C+Gabrielle+J+M&rft.aulast=Pauwels&rft.aufirst=Valentijn+R&rft.date=2015-12-01&rft.volume=86&rft.issue=Part+B&rft.spage=284&rft.isbn=&rft.btitle=&rft.title=Advances+in+Water+Resources&rft.issn=03091708&rft_id=info:doi/10.1016%2Fj.advwatres.2015.05.013 L2 - http://www.sciencedirect.com/science/journal/03091708 LA - English DB - GeoRef N1 - Conference title - 20th International Conference on Computational methods in water resources N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Number of references - 31 N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - algorithms; covariance analysis; data assimilation; errors; hydrology; Kalman filters; models; statistical analysis DO - http://dx.doi.org/10.1016/j.advwatres.2015.05.013 ER - TY - JOUR T1 - Igneous processes and dike swarms; magnetic signatures in the solar system AN - 1824215059; 2016-082499 AB - Large igneous provinces (LIP) are common in planetary environments: at Mars, Venus, Mercury, Io, and of course the Earth and its Moon. Dike swarms are often associated with LIPs, and are one of the only remaining signatures of a LIP in old, eroded settings. On Earth, dike swarms are often recognized by their magnetic signatures. The World Digital Magnetic Anomaly Map (version 2, 2015) is now based on a higher resolution 5 km grid, so many more dike swarms are apparent. We review this latest compilation. Several new high resolution planetary magnetic data sets have also recently become available, and we review evidence for igneous processes, and dikes, in these new data sets. We also review the prospect for new planetary magnetic data sets that might further elucidate igneous processes. At Mars, for example, we have photogeologic evidence for a host of dike swarms, but because of the high altitude of the magnetic data sets, no magnetic evidence exists. A new technique based on remotely sensing the magnetic field of the atomic Na in micro-meteorite ablation layers offers the promise of improving the spatial resolution by a factor of 2-4 at Mars. JF - American Geophysical Union Fall Meeting AU - Purucker, Michael E AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract GP13B EP - 1305 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824215059?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Igneous+processes+and+dike+swarms%3B+magnetic+signatures+in+the+solar+system&rft.au=Purucker%2C+Michael+E%3BAnonymous&rft.aulast=Purucker&rft.aufirst=Michael&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-09-29 N1 - CODEN - #07548 ER - TY - JOUR T1 - How might recharge change under projected climate change in Western US? AN - 1819898046; 2016-078338 AB - Although ground water is a major source of water in the western US, little research has been done on the impacts of climate change on western groundwater storage and recharge. Here we assess the impact of projected changes in precipitation and temperature on groundwater recharge across the western US by dividing the domain into five major regions (viz. Northern Rockies and Plains, South, Southwest, Northwest and West). Hydrologic outputs from the Variable Infiltration Capacity (VIC) model based on Bias-Correction and Spatial Disaggregation (BCSD) Coupled Model Inter-comparison Project Phase 5 (CMIP5) climate projections from 11 Global Circulation Models (GCMs) for Representative Concentration pathway 6.0 (RCP 6.0) scenarios were selected for projecting changes in recharge. Projections are made for near future (2020-2050) and far future (2070-2100) relative to the historical period (1970-2000). Averaged over the domain, half of the GCMs caused VIC to increase recharge across the region while the remaining half resulted in decreased recharge for both the near (-10.1% to 5.8%) and far (-9.7% to 17%) future. A majority (9 out of 11 GCMs) of the VIC simulations projected increased recharge in the Northern Rockies and Plains for both the near and far future. A majority of the simulations agreed on reduced recharge in other regions for the near future. For the far future, a majority of the simulations agreed on decreased recharge in the South (9 out of 11 GCMs) and Southwest (7 out of 11 GCMs) regions. The change is projected to be largest for the South region which could see recharged reduced by as much as 50%. Changes in recharge in the Northwest region are predicted to be small (within 10% of historical recharge). Despite the large variability in projected recharge across the GCMs, recharge projections from this study will help water managers with long term water management planning. JF - American Geophysical Union Fall Meeting AU - Niraula, Rewati AU - Meixner, Thomas AU - Rodell, Matthew AU - Ajami, Hoori AU - Gochis, David J AU - Castro, Christopher L AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract H21B EP - 1377 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819898046?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=How+might+recharge+change+under+projected+climate+change+in+Western+US%3F&rft.au=Niraula%2C+Rewati%3BMeixner%2C+Thomas%3BRodell%2C+Matthew%3BAjami%2C+Hoori%3BGochis%2C+David+J%3BCastro%2C+Christopher+L%3BAnonymous&rft.aulast=Niraula&rft.aufirst=Rewati&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-10-25 N1 - CODEN - #07548 ER - TY - JOUR T1 - Dust on snow processes and impacts in the upper Colorado River basin AN - 1819897602; 2016-078241 AB - In the Upper Colorado River basin episodic deposition of mineral dust onto mountain snow cover frequently occurs in the spring when wind speeds and dust emission peaks on the nearby Colorado Plateau, and deposition rates have increased since the intensive settlement in the western USA in the mid 1880s. Dust deposition darkens the snow surface, and accelerates snowmelt through reduction of albedo and further indirect reduction of albedo by accelerating the growth of snow grain size. Observation and modeling of dust-on-snow processes began in 2005 at Senator Beck Basin Study Area (SBBSA) in the San Juan Mountains, CO, work which has shown that dust advances melt, shifts runoff timing and intensity, and reduces total water yield. The consistency of deposition and magnitude of impacts highlighted the need for more detailed understanding of the radiative impacts of dust-on-snow in this region. Here I will present results from a novel, high resolution, daily snow property dataset, collected at SBBSA over the 2013 ablation season, to facilitate physically based radiative transfer and snowmelt modeling. Measurements included snow albedo and vertical profiles of snow density, optical snow grain size, and dust/black carbon concentrations. This dataset was used to assess the relationship between episodic dust events, snow grain growth, and albedo over time, and observe the relation between deposited dust and melt water. Additionally, modeling results include the determination of the regionally specific dust-on-snow complex refractive index and radiative forcing partitioning between dust and black carbon, and dust and snow grain growth. JF - American Geophysical Union Fall Meeting AU - Skiles, McKenzie AU - Painter, Thomas H AU - Okin, Greg S AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract EP42A EP - 07 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819897602?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Dust+on+snow+processes+and+impacts+in+the+upper+Colorado+River+basin&rft.au=Skiles%2C+McKenzie%3BPainter%2C+Thomas+H%3BOkin%2C+Greg+S%3BAnonymous&rft.aulast=Skiles&rft.aufirst=McKenzie&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-09-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Analytical volcano deformation modelling; a new and fast generalized point-source approach with application to the 2015 Calbuco eruption AN - 1815674944; 2016-074016 AB - Ground deformation at active volcanoes is one of the key precursors of volcanic unrest, monitored by InSAR and GPS techniques at high spatial and temporal resolution, respectively. Modelling of the observed displacements establishes the link between them and the underlying subsurface processes and volume change. The so-called Mogi model and the rectangular dislocation are two commonly applied analytical solutions that allow for quick interpretations based on the location, depth and volume change of pressurized spherical cavities and planar intrusions, respectively. Geological observations worldwide, however, suggest elongated, tabular or other non-equidimensional geometries for the magma chambers. How can these be modelled? Generalized models such as the Davis's point ellipsoidal cavity or the rectangular dislocation solutions, are geometrically limited and could barely improve the interpretation of data. We develop a new analytical artefact-free solution for a rectangular dislocation, which also possesses full rotational degrees of freedom. We construct a kinematic model in terms of three pairwise-perpendicular rectangular dislocations with a prescribed opening only. This model represents a generalized point source in the far field, and also performs as a finite dislocation model for planar intrusions in the near field. We show that through calculating the Eshelby's shape tensor the far-field displacements and stresses of any arbitrary triaxial ellipsoidal cavity can be reproduced by using this model. Regardless of its aspect ratios, the volume change of this model is simply the sum of the volume change of the individual dislocations. Our model can be integrated in any inversion scheme as simply as the Mogi model, profiting at the same time from the advantages of a generalized point source. After evaluating our model by using a boundary element method code, we apply it to ground displacements of the 2015 Calbuco eruption, Chile, observed by the Sentinel-1 satellite. We infer the parameters of a deflating elongated source located beneath Calbuco, and find significant differences to Mogi type solutions. The results imply that interpretations based on our model may help us better understand source characteristics, and in the case of Calubuco volcano infer a volcano-tectonic coupling mechanism. JF - American Geophysical Union Fall Meeting AU - Nikkhoo, Mehdi AU - Walter, Thomas R AU - Lundgren, Paul AU - Prats-Iraola, Pau AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract G31C EP - 07 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815674944?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Analytical+volcano+deformation+modelling%3B+a+new+and+fast+generalized+point-source+approach+with+application+to+the+2015+Calbuco+eruption&rft.au=Nikkhoo%2C+Mehdi%3BWalter%2C+Thomas+R%3BLundgren%2C+Paul%3BPrats-Iraola%2C+Pau%3BAnonymous&rft.aulast=Nikkhoo&rft.aufirst=Mehdi&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-09-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Bridging the potential gap in polar ice sheet melt estimates between GRACE and GRACE follow-on using SLR/DORIS data AN - 1815673305; 2016-074007 AB - The GRACE mission has provided invaluable insight into polar ice sheet mass change since 2002. However, the GRACE mission might cease functioning before the August 2017 launch of its successor mission GRACE Follow-On. To mitigate against this potential lack of data, we reconstruct a single set of monthly, global gravity fields using conventional tracking data that would be uninterrupted over the potential gap. These fields would therefore provide continuous coverage of the polar ice sheet mass changes. We combined the conventional tracking data (SLR/DORIS) and GRACE fields via an Empirical Orthogonal Function (EOF) analysis, whereby the conventional tracking data temporal modes are obtained by fitting the SLR/DORIS Stokes coefficients to the GRACE spatial modes via linear least-squares. Combining those temporal modes with GRACE spatial modes yields the reconstructed global gravity fields. The validity of these reconstructed fields is characterized via Monte-Carlo simulations. In these simulations, randomly generated data gaps replace some of the GRACE fields. The mass change curve associated with each simulation is then compared to the original reconstruction (the "truth"). We see that the differences between the truth and the simulations are within the noise of the signal, except for the simulations with the longest gaps. For those, there are non-negligible differences in the trend. However, major short-term mass changes in Greenland are still captured. For example, even without data over the 2013 year (during the hiatus in Greenland ice sheet melt), the reconstructed mass change still captured this specific event. Similarly, the 2009 snowfall anomaly in East Antarctica is also detected in a reconstructed field, despite using simulated GRACE fields with a gap over that 2009 time frame. JF - American Geophysical Union Fall Meeting AU - Talpe, Matthieu AU - Lemoine, Frank G AU - Nerem, R Steven AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract G31B EP - 1117 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815673305?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Bridging+the+potential+gap+in+polar+ice+sheet+melt+estimates+between+GRACE+and+GRACE+follow-on+using+SLR%2FDORIS+data&rft.au=Talpe%2C+Matthieu%3BLemoine%2C+Frank+G%3BNerem%2C+R+Steven%3BAnonymous&rft.aulast=Talpe&rft.aufirst=Matthieu&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-09-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Determination of the amount of peroxy in granite rock using the Seebeck Effect AN - 1815673174; 2016-075882 AB - We present a series of laboratory experiments which provide evidence for peroxy defects in granite, coupled with a determination of the peroxy defect concentration. When peroxy defects are activated they become defect electrons (positive holes) in the oxygen anion sub-lattice. This in essence converts the granite sample to a p-type semiconductor. Our preliminary results of the thermoelectric (Seebeck) effect for granite show that positive charge carriers are being generated (positive gradient: see Figure) in the granite sample and that the concentration of peroxy defects in the granite sample is 1137 + or - 20 ppm. The Seebeck coefficient (alpha ) is the gradient between the voltage (V) and the temperature (T), such that alpha = V /T . One end of the granite sample was placed in a furnace and heated. At 300 degrees C the peroxy defect spins decouple, while at 430 degrees C the peroxy defects dissociate, producing positive holes. When the positive holes are activated their mobility increases and they move towards the cool end of the granite sample through diffusion. This induces a potential difference linked to a thermal gradient between the two ends of the sample. We then fitted the coefficients of two first order polynomials and a point of inflection using a Markov Chain Monte Carlo algorithm. This was done to statistically estimate the uncertainties in the coefficients from a Bayesian statistical analysis. The best fit and corresponding standard error of the reflection point was found to be 426 + or - 5 degrees C. This is in excellent agreement to values, around 430 degrees C, found in the literature. We then find alpha = 18.50 + or - 0.18 mu V K (super -1) above 426 + or - 5 degrees C, which equates to a carrier concentration of 1.16 X 10 (super 20) cm (super -3) compared to the carrier concentrations of heavily doped semiconductors, which are on the order of 10 (super 21) cm (super -3) . This then gives a peroxy defect concentration of 1137 + or - 20 ppm. JF - American Geophysical Union Fall Meeting AU - Tregloan-Reed, Jeremy James AU - Tarnas, Jesse AU - Plante, Zach AU - Freund, Friedemann T AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract MR21A EP - 2605 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815673174?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Determination+of+the+amount+of+peroxy+in+granite+rock+using+the+Seebeck+Effect&rft.au=Tregloan-Reed%2C+Jeremy+James%3BTarnas%2C+Jesse%3BPlante%2C+Zach%3BFreund%2C+Friedemann+T%3BAnonymous&rft.aulast=Tregloan-Reed&rft.aufirst=Jeremy&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-09-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Utilizing NASA Earth observations to identify locations for sedimentation mitigation in the Ralston Creek watershed following the September 2013 Colorado floods AN - 1815673168; 2016-075425 AB - The September 2013 flooding in Denver, CO, characterized as a "one in 1,000" rainfall event, resulted in excessive runoff and sedimentation, which altered surrounding watershed structure and hydrology. This flooding event and the uncharacteristic weather in spring 2015 prompted a study by the NASA DEVELOP team to address community concerns regarding water quality. DEVELOP worked with Denver Water, the city's primary water supplier, to determine erosion mitigation sites in the Ralston Creek Watershed using the Revised Universal Soil Loss Equation (RUSLE). This model combines rainfall, slope, land cover, and conservation practices to predict soil loss. This research integrated land cover maps derived from NASA's Landsat 8 with a high resolution airborne LiDAR digital elevation model, which provided Denver Water with a fine scale map detailing potential mitigation sites. Mitigation sites were determined based on RUSLE outputs and accessibility. JF - American Geophysical Union Fall Meeting AU - Gotzmann, R AU - Rhodes, Tyler AU - Phillips, A AU - Muench, Rebekke AU - Ryks, Jared AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract EP21C EP - 0925 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 06A:Sedimentary petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815673168?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Utilizing+NASA+Earth+observations+to+identify+locations+for+sedimentation+mitigation+in+the+Ralston+Creek+watershed+following+the+September+2013+Colorado+floods&rft.au=Gotzmann%2C+R%3BRhodes%2C+Tyler%3BPhillips%2C+A%3BMuench%2C+Rebekke%3BRyks%2C+Jared%3BAnonymous&rft.aulast=Gotzmann&rft.aufirst=R&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-09-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Measuring and modeling solid Earth; cryosphere gravimetric signals in GRACE and future satellite missions AN - 1815673099; 2016-075623 AB - Based on over a decade (2002-present) of Gravity Recovery and Climate Experiment (GRACE) gravity measurements, the results from southern Alaska indicate region-specific trends of annual ice mass loss and large variable seasonal mass fluctuations. Numerical modeling of the solid Earth response to cryosphere change on a variety of temporal and spatial scales plays a critical role in supporting the interpretation of time-variable gravity and other geodetic data in southern Alaska. Additionally, in this tectonically active region, the GRACE data are predicted to include ongoing mass change associated with seismic cycle processes including the viscoelastic response to the M 9.2 1964 Prince William Sound earthquake that influences our estimates of ice mass loss trends. Here, we highlight our results of numerical modeling of region specific contributing geophysical signals within the GRACE data. Our numerical modeling of the solid Earth response to cryosphere changes and earthquakes includes extrapolations of rock-mechanics based constitutive theories to the mantle and crustal rheology used in our regional finite element and global normal-mode modeling. With the longer time series provided by GRACE-GRACE-FO, and possibly enhanced spatial resolution of GRACE-FO and other future mission gravimetric data, we anticipate better characterization of the temporal and spatial nature of cryosphere-solid Earth interaction signals. These constraints will inform optimal strategies for exploiting gravimetric data from other tectonically active regions with cryosphere changes including Patagonia and Iceland. JF - American Geophysical Union Fall Meeting AU - Sauber, Jeanne M AU - Han, Shin-Chan AU - Luthcke, Scott B AU - Loomis, Bryant AU - Freymueller, Jeffrey Todd AU - Davis, James L AU - Pollitz, Frederick F AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract G41B EP - 05 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815673099?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Measuring+and+modeling+solid+Earth%3B+cryosphere+gravimetric+signals+in+GRACE+and+future+satellite+missions&rft.au=Sauber%2C+Jeanne+M%3BHan%2C+Shin-Chan%3BLuthcke%2C+Scott+B%3BLoomis%2C+Bryant%3BFreymueller%2C+Jeffrey+Todd%3BDavis%2C+James+L%3BPollitz%2C+Frederick+F%3BAnonymous&rft.aulast=Sauber&rft.aufirst=Jeanne&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-09-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Student journalists in the field; bridging the gap between science and communication AN - 1815673070; 2016-075264 AB - The Remote, In Situ, and Synchrotron Studies for Science and Exploration (RIS4E) team is one of nine nodes of NASA's Solar System Exploration Research Virtual Institute. A core goal of the RIS4E Education and Communication (E&C) plan is to increase the accessibility of science to the general public, both by teaching scientists how to communicate their work to the public and by training the next generation of science journalists. During the Spring 2015 semester, eight Stony Brook University journalism students, ranging from Sophomores through M.A. students, participated in a new Science Journalism course in the School of Journalism. During the semester, the students learned about the science being conducted by the RIS4E team, took field trips to labs, interviewed scientists and graduate students, and produced print and video pieces about the science and the scientists. As a capstone project, five of the students, along with a professor and TA, were embedded with the RIS4E field geology team during their 2015 field season at the 1974 Kilauea lava flow on the Big Island of Hawaii. During their time in Hawaii, the journalism students had complete access to the field team, both during work and after-work hours. For each of the students, it was their first exposure to the practice of science, made possible through the experience of watching scientists formulate and test hypotheses in real time. They posted daily blog updates about the work being done by the field team and acquired dozens of hours of video footage to be produced into longer pieces. This presentation will describe the unique Stony Brook Science Journalism course and the experiences of the students both in the classroom and in the field. We will highlight both the successes and the lessons learned, for both the students and the scientists involved, and discuss our plans to conduct a second class in 2017, when the students will accompany the RIS4E field team to the Potrillo Volcanic Field in New Mexico. JF - American Geophysical Union Fall Meeting AU - Glotch, T D AU - Jones, A P AU - Bleacher, L AU - Selvin, Barbara AU - Firstman, Richard AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract ED42A EP - 03 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 15:Miscellaneous UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815673070?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Student+journalists+in+the+field%3B+bridging+the+gap+between+science+and+communication&rft.au=Glotch%2C+T+D%3BJones%2C+A+P%3BBleacher%2C+L%3BSelvin%2C+Barbara%3BFirstman%2C+Richard%3BAnonymous&rft.aulast=Glotch&rft.aufirst=T&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-09-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Metal-silicate partitioning of lithophile elements at high pressures and temperatures AN - 1815672976; 2016-075854 AB - Trace element abundances in Earth's core were established during core-mantle differentiation and metal-silicate equilibration processes early in the planet's history. The core has been suggested as a possible reservoir in which the presence of nominally lithophile elements can explain the observance of non-chondritic ratios of some of these elements in surface rocks (e.g. Nb/Ta, Th/U and Mg/Si)[1-2]. Additionally, several of these elements (U, Th and K) are long-lived sources of radiogenic heat and could be important for explaining the geomagnetic field early in Earth's history. Based on their metal-silicate partitioning behavior at near ambient conditions, it is frequently assumed that uranium and other strongly lithophile elements are present in the core at only trivial abundances. However, core formation took place at a variety of conditions, reaching pressures and temperatures well above those in which most metal-silicate partitioning measurements were obtained[3]. Here we report metal-silicate partitioning data of lithophile elements such as U and Mg, as well as partially siderophile elements Si and S, at conditions more relevant to metal segregation and core formation in a magma ocean. Laser heated diamond anvil methods were used to obtain pressures of 30-70 GPa and temperatures up to 5200 K. FIB/EM methods were used to section the recovered samples and measure the quenched metal and silicate melt compositions. We find that even strongly lithophile elements such as U and Mg partition measurably into the metal phase under extreme P-T conditions. References: [1]Wade, J. and Wood, B. J., Nature, 109 (2001) [2]Allegre et al. EPSL, 134 (1995) [3]Rubie, et al. Icarus, 248 (2015) JF - American Geophysical Union Fall Meeting AU - Chidester, Bethany AU - Rahman, Zia AU - Righter, Kevin AU - Campbell, Andrew J AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract MR13C EP - 2708 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 17B:Geophysics of minerals and rocks UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815672976?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Metal-silicate+partitioning+of+lithophile+elements+at+high+pressures+and+temperatures&rft.au=Chidester%2C+Bethany%3BRahman%2C+Zia%3BRighter%2C+Kevin%3BCampbell%2C+Andrew+J%3BAnonymous&rft.aulast=Chidester&rft.aufirst=Bethany&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-09-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Recent progress in understanding natural-hazards-generated TEC perturbations; measurements and modeling results AN - 1815672970; 2016-075664 AB - Natural hazards, including earthquakes, volcanic eruptions, and tsunamis, have been significant threats to humans throughout recorded history. The Global Positioning System satellites have become primary sensors to measure signatures associated with such natural hazards. These signatures typically include GPS-derived seismic deformation measurements, co-seismic vertical displacements, and real-time GPS-derived ocean buoy positioning estimates. Another way to use GPS observables is to compute the ionospheric total electron content (TEC) to measure and monitor post-seismic ionospheric disturbances caused by earthquakes, volcanic eruptions, and tsunamis. Research at the University of New Brunswick (UNB) laid the foundations to model the three-dimensional ionosphere at NASA's Jet Propulsion Laboratory by ingesting ground- and space-based GPS measurements into the state-of-the-art Global Assimilative Ionosphere Modeling (GAIM) software. As an outcome of the UNB and NASA research, new and innovative GPS applications have been invented including the use of ionospheric measurements to detect tiny fluctuations in the GPS signals between the spacecraft and GPS receivers caused by natural hazards occurring on or near the Earth's surface. We will show examples for early detection of natural hazards generated ionospheric signatures using ground-based and space-borne GPS receivers. We will also discuss recent results from the U.S. Real-time Earthquake Analysis for Disaster Mitigation Network (READI) exercises utilizing our algorithms. By studying the propagation properties of ionospheric perturbations generated by natural hazards along with applying sophisticated first-principles physics-based modeling, we are on track to develop new technologies that can potentially save human lives and minimize property damage. It is also expected that ionospheric monitoring of TEC perturbations might become an integral part of existing natural hazards warning systems. JF - American Geophysical Union Fall Meeting AU - Komjathy, Attila AU - Yang, Yu-Ming AU - Meng, Xing AU - Verkhoglyadova, Olga P AU - Mannucci, Anthony J AU - Langley, Richard B AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract G51A EP - 1051 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815672970?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Recent+progress+in+understanding+natural-hazards-generated+TEC+perturbations%3B+measurements+and+modeling+results&rft.au=Komjathy%2C+Attila%3BYang%2C+Yu-Ming%3BMeng%2C+Xing%3BVerkhoglyadova%2C+Olga+P%3BMannucci%2C+Anthony+J%3BLangley%2C+Richard+B%3BAnonymous&rft.aulast=Komjathy&rft.aufirst=Attila&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-09-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Sea level, land motion, and the anomalous tide at Churchill, Hudson Bay AN - 1815672236; 2016-075646 AB - The importance of the tide gauge at Churchill, Manitoba, cannot be overstated. It is the only permanently operating tide gauge in the central Canadian Arctic, and it sits on a prime spot for monitoring the mantle's rebound from the Laurentide ice loss. Yet interpretation of the sea-level time series at Churchill has long been problematic, going back even to early work by Gutenberg in the 1940s. The long-term relative sea-level rates are inconsistent: approximately -4, -19, -5 + or - 1 mm/y for the periods 1940-1970, 1970-1990, 1990-2014 respectively. Annual mean high water (MHW) and mean low water (MLW) reflect these trends until around 1990, after which MLW leveled off and is now nearly unchanging. Slightly later, around 2000, the semidiurnal tides became very anomalous, with falling amplitudes and slightly increasing phase lags. The amplitude of M2 was approximately 154 cm before 2000; it dropped to about 146 cm by 2010 and reached an all-time low of 142 cm in 2014. Satellite altimeter estimates of the tide in this region, although challenging because of seasonal ice cover, show no comparable M2 changes, so the tidal changes must be localized to the near vicinity of the gauge (or to the gauge itself if caused by a malfunction). On the other hand, altimetry confirms the post-1992 Churchill measurements of mean sea level, thanks to the long time series of land motion measurements obtained at GPS station CHUR, which gives a vertical uplift of 10.1 mm/y. Combining satellite altimeter data with the Churchill tide-gauge data gives an implied vertical crustal rate of about 9.0 + or - 0.8 mm/y, in reasonable agreement with the GPS. In summary, we have still anomalous MSL measurements at the Churchill gauge for the intermediate 1970-1990 era, and very anomalous tidal measurements since 2000, but we have apparently quite reliable MSL rates since 1990. JF - American Geophysical Union Fall Meeting AU - Ray, Richard D AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract G43B EP - 1040 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 07:Oceanography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815672236?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Sea+level%2C+land+motion%2C+and+the+anomalous+tide+at+Churchill%2C+Hudson+Bay&rft.au=Ray%2C+Richard+D%3BAnonymous&rft.aulast=Ray&rft.aufirst=Richard&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-09-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Interseismic strain accumulation in metropolitan Los Angeles distinguished from oil and water management using InSAR and GPS AN - 1815672184; 2016-075508 AB - Thesis. InSAR measurements from 1992 to 2012 are detecting deformation due to oil pumping and groundwater changes throughout metropolitan Los Angeles. This is allowing elastic strain build up on blind thrusts beneath the city to be accurately evaluated using GPS. Oil Fields. Pumping and repressurization of oil fields have generated substantial displacement in metropolitan Los Angeles, causing Beverly Hills, downtown, and Whittier to subside at 3-10 mm/yr and Santa Fe Springs and La Mirada to rise at 5-9 mm/yr. Aquifers. Displacements of the Santa Ana and San Gabriel Valley aquifers accumulate in response to sustained changes in groundwater over periods of either drought or heavy precipitation. Santa Ana aquifer has subsided nearly 0.1 m in response to lowering of the groundwater level by about 25 m over the past 18 years. Anthropogenic Vs. Tectonic Motion. We are assessing horizontal motions due to changes groundwater using an empirical relationship established on the basis of seasonal oscillations of Santa Ana aquifer. Anthropogenic horizontal motion is estimated to be proportional to the directional gradient in vertical motion inferred with InSAR. We are finding this rough approximation to be quite useful for evaluating deviations of GPS positions from a constant velocity. We are also constructing Mogi models of volume change in oil fields to evaluate GPS deviations. Earthquake Strain Buildup on Blind Thrust Faults. NNE contraction perpendicular to the big restraining bend in the San Andreas fault is fastest not immediately south of the San Andreas in the San Gabriel Mountains, but instead 50 km south of the fault in northern metropolitan Los Angeles. An elastic model of interseismic strain accumulation fit to GPS data and incorporating a 1D approximation of the rheology of the Los Angeles basin indicates the deep segment of the Puente Hills (-upper Elysian Park) Thrust to be slipping at 9+ or -2 mm/yr beneath a locking depth of 12+ or -5 km. Please see also our complementary study [Rollins et al., AGU 2015] exploring elastic models with 3D geometry. This 9 mm/yr geodetic slip rate for the Puente Hills Thrust system is faster than the 3-5 mm/yr cumulative geologic slip rate for the upper Elysian Park and Puente Hills Thrust, indicating that M 6.5 and M 7 earthquakes in metropolitan Los Angeles are more frequent than forecast. JF - American Geophysical Union Fall Meeting AU - Argus, Donald F AU - Agram, Piyush S AU - Rollins, Chris AU - Avouac, Jean-Philippe AU - Barbot, Sylvain AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract G13B EP - 07 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815672184?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Interseismic+strain+accumulation+in+metropolitan+Los+Angeles+distinguished+from+oil+and+water+management+using+InSAR+and+GPS&rft.au=Argus%2C+Donald+F%3BAgram%2C+Piyush+S%3BRollins%2C+Chris%3BAvouac%2C+Jean-Philippe%3BBarbot%2C+Sylvain%3BAnonymous&rft.aulast=Argus&rft.aufirst=Donald&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-09-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - On the response of the Black Sea elevation to the Mediterranean Sea level AN - 1815672171; 2016-075657 AB - The response of the Black Sea elevation to sea level changes in the Mediterranean is studied using satellite altimetry data and a linear analytical model. We show that winds near the Strait of Gibraltar and over the Aegean Sea are able to dynamically change sea level in the Mediterranean and Black Seas, respectively. The nonseasonal sea level in the Black Sea is coherent with that in the Aegean Sea and Sea of Marmara, but lags them by 10-38 days at sub-annual periods. The observed time lag is mainly due to friction that constrains the exchange through Bosphorus, and it represents the time required for the Black Sea level to adjust to locally and remotely forced changes of sea level in the Aegean Sea. The analytical model, employed in this study, is able to explain the amplitude and, to a large degree, phase of the response of the observed Black Sea elevation to sea level changes in the Sea of Marmara and Aegean Sea. The response is due to the barotropic flow through the Bosphorus Strait constrained mainly by friction. The geostrophic control is found to be important only at low and unrealistic friction (lambda (sub s) < 1 X 10 (super -5) s (super -1) ). Using a realistic friction coefficient (lambda (sub s) = 3.8 X 10 (super -5) s (super -1) ), we find that the magnitude of the response increases from 50 to 100% of the disturbance magnitude (10 cm) and the time lag increases from 17 to 25 days at period between 100 and 500 days. The inclusion of fresh water fluxes into the Black Sea in the model increases the magnitude of the response by about 5 + or - 1.5 cm, and the inclusion of the along-strait wind in the direction of the Black/Marmara Sea increases/decreases the magnitude of the response by about 1 cm at periods greater than 150 days. The phase of the response appears to be insensitive to both the wind stress and freshwater flux. JF - American Geophysical Union Fall Meeting AU - Volkov, Denis AU - Johns, William E AU - Belonenko, Tatyana V AU - Landerer, Felix W AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract G43B EP - 1054 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 07:Oceanography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815672171?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=On+the+response+of+the+Black+Sea+elevation+to+the+Mediterranean+Sea+level&rft.au=Volkov%2C+Denis%3BJohns%2C+William+E%3BBelonenko%2C+Tatyana+V%3BLanderer%2C+Felix+W%3BAnonymous&rft.aulast=Volkov&rft.aufirst=Denis&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-09-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - American Geophysical Union 2015 fall meeting AN - 1815672114; 2016-075631 AB - The Crustal Dynamics Data Information System (CDDIS) supports data archiving and distribution activities for the space geodesy and geodynamics community. The main objectives of the system are to store space geodesy and geodynamics related data and products in a central data bank, to maintain information about the archival of these data, to disseminate these data and information in a timely manner to a global scientific research community and provide user based tools for the exploration and use of the archive. The CDDIS data system and its archive is a key component in several of the operational services within the International Association of Geodesy (IAG) and its observing system the Global Geodetic Observing System (GGOS), including the IGS, the International DORIS Service (IDS), the International Laser Ranging Service (ILRS), the International VLBI Service for Geodesy and Astrometry (IVS), and the International Earth Rotation and Reference Systems Service (IERS). In early 2015, CDDIS enhanced its operations with a new search tool enabling users to quickly search the archives in both spatial and temporal parameters. Also, in partnership with the IGS Real Rime Service, CDDIS established a new GNSS real-time streaming service with over 150 data streams and 30 products streams to the GNSS community providing additional capability and redundancy to the IGS Real Time Service (RTS). This poster will showcase these enhancements and others that CDDIS has made over the past year for the geodetic community and describe future plans for the system. JF - American Geophysical Union Fall Meeting AU - Noll, Carey E AU - Michael, Benjamin P AU - Pollack, Nathan AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract G43A EP - 1023 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815672114?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=American+Geophysical+Union+2015+fall+meeting&rft.au=Noll%2C+Carey+E%3BMichael%2C+Benjamin+P%3BPollack%2C+Nathan%3BAnonymous&rft.aulast=Noll&rft.aufirst=Carey&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-09-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - The virtual quake earthquake simulator; earthquake probability statistics for the El Mayor-Cucapah region and evidence of predictability in simulated earthquake sequences AN - 1815672105; 2016-075929 AB - We introduce a framework for developing earthquake forecasts using Virtual Quake (VQ), the generalized successor to the perhaps better known Virtual California (VC) earthquake simulator. We discuss the basic merits and mechanics of the simulator, and we present several statistics of interest for earthquake forecasting. We also show that, though the system as a whole (in aggregate) behaves quite randomly, (simulated) earthquake sequences limited to specific fault sections exhibit measurable predictability in the form of increasing seismicity precursory to large m >7 earthquakes. In order to quantify this, we develop an alert based forecasting metric similar to those presented in Keilis-Borok (2002); Molchan (1997), and show that it exhibits significant information gain compared to random forecasts. We also discuss the long standing question of activation vs quiescent type earthquake triggering. We show that VQ exhibits both behaviors separately for independent fault sections; some fault sections exhibit activation type triggering, while others are better characterized by quiescent type triggering. We discuss these aspects of VQ specifically with respect to faults in the Salton Basin and near the El Mayor-Cucapah region in southern California USA and northern Baja California Norte, Mexico. JF - American Geophysical Union Fall Meeting AU - Schultz, Kasey AU - Yoder, Mark R AU - Heien, Eric M AU - Rundle, John B AU - Turcotte, Donald L AU - Parker, Jay W AU - Donnellan, Andrea AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract NG13A EP - 1860 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815672105?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=The+virtual+quake+earthquake+simulator%3B+earthquake+probability+statistics+for+the+El+Mayor-Cucapah+region+and+evidence+of+predictability+in+simulated+earthquake+sequences&rft.au=Schultz%2C+Kasey%3BYoder%2C+Mark+R%3BHeien%2C+Eric+M%3BRundle%2C+John+B%3BTurcotte%2C+Donald+L%3BParker%2C+Jay+W%3BDonnellan%2C+Andrea%3BAnonymous&rft.aulast=Schultz&rft.aufirst=Kasey&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-09-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - The status and future directions for the GRACE mission AN - 1815672085; 2016-075621 AB - The twin satellites of the Gravity Recovery and Climate Experiment (GRACE) were launched on March 17, 2002 and have operated for over 13 years. The mission objectives are to sense the spatial and temporal variations of the Earth's mass through its effects on the gravity field at the GRACE satellite altitude. The major cause of the time varying mass is water motion and the GRACE mission has provided a continuous decade long measurement sequences which characterizes the seasonal cycle of mass transport between the oceans, land, cryosphere and atmosphere; its inter-annual variability; and the climate driven secular, or long period, mass transport signals. In 2012, a complete reanalysis of the mission data, referred to as the RL05 data release, was initiated. The monthly solutions from this effort were released in mid-2013 with the mean fields following in 2014 and 2015. The mission is entering the final phases of operations. The current mission operations strategy emphasizes extending the mission lifetime to achieve mission overlap with the GRACE Follow On Mission. This presentation will review the mission status and the projections for mission lifetime, summarize plans for the RL 06 data re-analysis, describe the issues that influence the operations philosophy and discuss the impact the operations may have on the scientific data products. JF - American Geophysical Union Fall Meeting AU - Tapley, Byron D AU - Flechtner, Frank AU - Watkins, Michael M AU - Bettadpur, Srinivas V AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract G41B EP - 02 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815672085?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=The+status+and+future+directions+for+the+GRACE+mission&rft.au=Tapley%2C+Byron+D%3BFlechtner%2C+Frank%3BWatkins%2C+Michael+M%3BBettadpur%2C+Srinivas+V%3BAnonymous&rft.aulast=Tapley&rft.aufirst=Byron&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-09-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Postseismic gravity changes caused by persistent viscoelastic relaxation after a series of great earthquakes since 2004 AN - 1815669406; 2016-073997 AB - GRACE data has detected regional-scale coseismic and postseismic gravity changes after recent great earthquakes, including 2004 M (sub w) 9.2 Sumatra-Andaman, 2005 M (sub w) 8.5 Nias, 2007 M (sub w) 8.5 Bengkulu, 2010 M (sub w) 8.8 Maule, 2011 M (sub w) 9.0 Tohoku-Oki, 2012 M (sub w) 8.6 Wharton Basin (Indian Ocean), and 2013 M (sub w) 8.3 Okhotsk earthquakes. Those earthquakes caused abrupt gravity field changes and triggered gradual postseismic adjustment that are expected to continue for years to decades due to viscoelastic relaxation. Significant postseismic gravity changes were recorded in GRACE not only for megathrust ruptures (as large as M (sub w) 9.2), but also for non-megathrust earthquakes (as small as M (sub w) 8.1) with very different mechanisms and properties, such as strike-slip earthquakes (not causing large vertical motion, e.g., 2012 Wharton Basin earthquake) and normal faulting events (e.g., 2007 Kuril earthquake). The cumulative postseismic gravity change can be even larger than the coseismic change depending on the rupture mechanism and the Earth's rheological structure around the region. The results from the newest GRACE Release-05 (RL05) Level-2 (L2) solutions found that the combined coseismic gravimetric signal from M (sub w) 8.3 Kuril thrust and M (sub w) 8.1 normal faulting events (doublet) was small but it produced substantial postseismic gravity change. Our preliminary results are consistent with the prominent influence of a biviscous asthenosphere underlying a thin elastic lithosphere in the Kuril trench. Now we have a unique opportunity to examine various types of earthquakes at time-scales from months to decades comprehensively using nearly 14 years of continuous gravity measurements from GRACE and to be extended for another decade or longer by GRACE-FO. In this presentation, we review the GRACE observations of postseismic gravity changes from those earthquakes and provide the numerical modelling results of gravity change anticipated from viscoelastic relaxation. By optimizing the model parameters, we will show the regional variability in the rheological structures along the plate boundaries. Our study will be indispensable not only for advancing earthquake physics but also for enabling climate investigations relying on GRACE data free of tectonic signals. We will discuss our progress to provide the optimized physical models of co- and post-seismic gravity changes to the GRACE Project and the broader science community for "earthquake corrections" to L1B and L2 data (just like "Atmosphere and Ocean De-aliasing", AOD products) to improve quantification of secular trends of ocean, cryosphere, and hydrological mass transport from GRACE measurements. JF - American Geophysical Union Fall Meeting AU - Han, Shin-Chan AU - Sauber, Jeanne M AU - Pollitz, Frederick F AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract G31A EP - 1106 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815669406?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Postseismic+gravity+changes+caused+by+persistent+viscoelastic+relaxation+after+a+series+of+great+earthquakes+since+2004&rft.au=Han%2C+Shin-Chan%3BSauber%2C+Jeanne+M%3BPollitz%2C+Frederick+F%3BAnonymous&rft.aulast=Han&rft.aufirst=Shin-Chan&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-09-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Scoping requirements for a drag-free system for next generation gravity field missions AN - 1815669381; 2016-074001 AB - Studies have shown that next generation gravity field mission architectures taking advantage of laser interferometric ranging and GOCE-type drag-free compensation will be limited by temporal aliasing errors (i.e undersampling and mismodeling of high frequency geophysical signals). In this study, we seek to define the required performance requirements for the removal of non-conservative forces (through drag-free compensation and/or measurement with an accelerometer) such that the high precision laser interferometry measurements can be fully exploited in light of temporal aliasing errors and their uncertainty. The performance requirements are derived via a matrix of high fidelity numerical simulations of the satellite system at various altitudes and for single and dual-pair mission architectures. Expected science outcomes are additionally presented. JF - American Geophysical Union Fall Meeting AU - Wiese, David N AU - Bettadpur, Srinivas V AU - Watkins, Michael M AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract G31B EP - 1110 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815669381?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Scoping+requirements+for+a+drag-free+system+for+next+generation+gravity+field+missions&rft.au=Wiese%2C+David+N%3BBettadpur%2C+Srinivas+V%3BWatkins%2C+Michael+M%3BAnonymous&rft.aulast=Wiese&rft.aufirst=David&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-09-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Validating crustal velocities derived from the IDS contribution to ITRF201 AN - 1815667494; 2016-073969 AB - In the context of the ITRF2014, the IDS Combination Center delivered 1140 weekly SINEX files to the IERS containing DORIS station positions and Earth orientation parameters from January 1993 to December 2014 (series IDS 09). For each DORIS station, we computed the mean position and velocity by stacking the IDS 09 weekly solutions and combining them with both DORIS internal local ties (3-D vector between two successive beacon installations at the same DORIS site) from IGN and a discontinuity file. The first objective of this study is to compare DORIS horizontal velocities to estimations from tectonic models such as GEODVEL and NNR-MORVEL56. The second purpose is to evaluate DORIS vertical velocities with respect to Global Isostatic Adjustment models (for Greenland, Fennoscandia, Iceland and Antarctica sites) such as ICE-6G (sub C) , and with respect to the latests GPS solution at the University of La Rochelle. Sites showing large differences in either horizontal (ex: Arequipa, Dionysos/Gavdos, Goldstone, Manila and Santiago) or vertical velocities (ex: Rothera, Thule and Yellowknife) will be of special concern. JF - American Geophysical Union Fall Meeting AU - Moreaux, Guilhem AU - Soudarin, Laurent AU - Gravelle, Mederic AU - Santamaria-Gomez, Alvaro AU - Lemoine, Frank G AU - Willis, Pascal AU - Ferrage, Pascale AU - Argus, Donald F AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract G23B EP - 1066 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815667494?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Validating+crustal+velocities+derived+from+the+IDS+contribution+to+ITRF201&rft.au=Moreaux%2C+Guilhem%3BSoudarin%2C+Laurent%3BGravelle%2C+Mederic%3BSantamaria-Gomez%2C+Alvaro%3BLemoine%2C+Frank+G%3BWillis%2C+Pascal%3BFerrage%2C+Pascale%3BArgus%2C+Donald+F%3BAnonymous&rft.aulast=Moreaux&rft.aufirst=Guilhem&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-09-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Using ISSM to simulate the LIA to present ice margin change at Upernavik Glacier, Greenland AN - 1812218303; 2016-068646 AB - The possibility for rapid melting of the Greenland ice sheet ranks among the most serious societal climate threats. This project puts the rate of contemporary climate change-driven Greenland ice mass change in a temporal context, by simulating the Greenland ice sheet margin throughout the Holocene and comparing the results with past ice margin positions (e.g. Andresen et al., 2014; Bjork et al., 2012) and records of glacier activity based on fjord sediment strata (Andresen et al. 2012). Here we show first steps to achieve this goal and model the evolution of the Upernavik Isstrom, a set of marine-terminating glaciers in Northwest Greenland, during the 20th century, using the Ice Sheet System Model (ISSM) (Larour et. al 2012). The simulation runs from 1900, shortly after the Little Ice Age (LIA), to year 2013, initialized using trimline data marking the former extent of the ice sheet and forced by a surface mass balance reconstruction after Box (2013). We address uncertainties in ice front positions and thickness by comparing our simulation output with present ice margin positions in the area. Finally, we investigate the possibility of simulating historic changes at ice sheet margins with this finite element ice sheet model. JF - American Geophysical Union Fall Meeting AU - Haubner, Konstanze AU - Larour, Eric Y AU - Box, Jason E AU - Schlegel, Nicole AU - Larsen, Signe Hillerup AU - Kjeldsen, Kristian K AU - Kjaer, Kurt Henrik AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract C51B EP - 0689 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1812218303?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Using+ISSM+to+simulate+the+LIA+to+present+ice+margin+change+at+Upernavik+Glacier%2C+Greenland&rft.au=Haubner%2C+Konstanze%3BLarour%2C+Eric+Y%3BBox%2C+Jason+E%3BSchlegel%2C+Nicole%3BLarsen%2C+Signe+Hillerup%3BKjeldsen%2C+Kristian+K%3BKjaer%2C+Kurt+Henrik%3BAnonymous&rft.aulast=Haubner&rft.aufirst=Konstanze&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-08-18 N1 - CODEN - #07548 ER - TY - JOUR T1 - First row transition metals in olivine; petrogenetic tracers for the evolution of mantle-derived magmas AN - 1812216946; 2016-068801 AB - Olivine is the most abundant mineral in the upper mantle and a major constituent of most mantle-derived rocks. However, despite its abundance, studies on the trace element chemistry of olivine are underrepresented in the literature. We present the results of a comprehensive study on the contents of first-row transition metals (FRTM: Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, and Zn), Ga and Ge in olivines from 2.7-3.5 Ga old Munro- and Barberton-type komatiites from the Kapvaal and Zimbabwe Cratons in southern Africa, the Yilgarn Craton in Australia, and the Superior Craton in Canada. Komatiitic olivines are compared to olivines from a Devonian-Carboniferous mantle peridotite (Finero, Italy) and contemporary ocean Island basalts (OIB, from St. Helena, South Atlantic Ocean). The olivine major element chemistry was determined using a JEOL JXA-8900 Superprobe at the University of Maryland. Trace element contents were determined using a Photon Machines Analyte G2 193 nm Excimer laser ablation system coupled to a Nu Instruments AttoM single collector ICP-MS at NASA Goddard Space Flight Center. Medium resolution mass discrimination (m/Delta m = 2500, at 5% peak intensity) was leveraged to separate isobaric interferences and support accurate quantitation of elemental abundances. The results show that olivines from komatiites are largely depleted in FRTM, Ga and Ge relative to the composition of the primitive mantle (FRTM (sub PM-norm) = nearly equal 0.01 - 1). All komatiitic olivines have similar mantle-normalized trace element patterns, regardless of age and/or locality. Olivines from the Finero mantle peridotite and the St. Helena OIB are similarly depleted. However, compared to komatiites, grains from Finero are enriched in Ge and distinctly depleted in Ti, V, Cr, and Ga, whereas olivines from St. Helena have overall flatter normalized trace element patterns. The distinct patterns show that olivine chemistry can be used to identify and understand the source and evolution of mantle-derived rocks. Furthermore, variable redox sensitive element ratios (e.g. V, Sc), and chalcophile element abundances (e.g. Cu) indicate a potential use of olivine FTRM chemistry to constrain mantle redox conditions and the sulfur saturation history of a magma. JF - American Geophysical Union Fall Meeting AU - Locmelis, Marek AU - Arevalo, Ricardo D, Jr AU - Puchtel, I S AU - Barnes, Steve J AU - Fiorentini, Marco L AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract DI31A EP - 2555 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1812216946?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=First+row+transition+metals+in+olivine%3B+petrogenetic+tracers+for+the+evolution+of+mantle-derived+magmas&rft.au=Locmelis%2C+Marek%3BArevalo%2C+Ricardo+D%2C+Jr%3BPuchtel%2C+I+S%3BBarnes%2C+Steve+J%3BFiorentini%2C+Marco+L%3BAnonymous&rft.aulast=Locmelis&rft.aufirst=Marek&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-08-18 N1 - CODEN - #07548 ER - TY - JOUR T1 - Implications of marginal weakening for grounding line migration and marine ice sheet (in)stability AN - 1812215017; 2016-068714 AB - The stability of a grounding line on reverse-sloping bedrock has been the subject of much attention and debate. In the absence of ice shelf buttressing or lateral flow variations, such a marine ice sheet configuration has been shown to be unconditionally unstable. Numerous studies have speculated that recent grounding line retreat in West Antarctica indicates that a runaway instability is already underway for this portion of the ice sheet. However, modeling studies have shown that a grounding line can be stabilized on a reverse-sloping bed in the case of strong lateral flow convergence. One factor that has not been addressed in modeling studies of the marine ice sheet stability is fracturing and weakening of ice stream and ice shelf shear margins, processes that are known to be operating in many places. It has been speculated that marginal weakening should reduce the stress carried across shear margins, leading to reduced buttressing and thus allowing accelerated flow and grounding line retreat. Here, we test this hypothesis using an ice sheet model and a previously-used, idealized marine ice sheet configuration with strong lateral flow convergence. We first confirm earlier modeling studies that a stable grounding line position can be found on reverse-sloping bedrock. We then explore perturbations of this stable position caused by allowing the shear margins to damage according to a new, generalized constitutive framework for ice deformation and weakening. Constitutive parameters for marginal weakening are taken from assimilated velocity observations for several different ice shelves. We demonstrate that marginal weakening is at least as important as basal lubrication or ice shelf thinning for perturbing the grounding line. Model projections of marine ice sheet evolution that do not account for marginal weakening are therefore likely to underestimate both the rate of grounding line retreat and ice flux. JF - American Geophysical Union Fall Meeting AU - Borstad, Christopher P AU - Seroussi, Helene L AU - Morlighem, Mathieu AU - Larour, Eric Y AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract C54B EP - 07 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1812215017?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Implications+of+marginal+weakening+for+grounding+line+migration+and+marine+ice+sheet+%28in%29stability&rft.au=Borstad%2C+Christopher+P%3BSeroussi%2C+Helene+L%3BMorlighem%2C+Mathieu%3BLarour%2C+Eric+Y%3BAnonymous&rft.aulast=Borstad&rft.aufirst=Christopher&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-08-18 N1 - CODEN - #07548 ER - TY - JOUR T1 - Extensive subglacial hydrological network and basal temperate layer in southwest Greenland; an integrated approach of radar analysis and ice sheet modeling AN - 1812213770; 2016-068663 AB - Meltwater storage in and beneath the ice sheet exerts strong control on ice flow velocity by modifying the ice thermal structure and basal sliding. However, observations of meltwater storage in Greenland are sparse and mostly limited to the margins of the ice sheet, providing an incomplete view on how water is distributed. To address this shortcoming, we use an integrated approach of radar analyses, and thermal and subglacial hydrology modeling to produce the first, catchment-wide characterization of the subglacial hydrological network. Our study focuses on a 1450 km (super 2) section of Russell Glacier and Isunnguata Sermia. We use the depth profiles of ice temperature from a thermal model to correct radar englacial attenuation losses, and produce maps of relative basal reflectivity from radar bed echoes. We examine the reflectivity relative to a subglacial hydrology model, and show that substantial volumes of water store in an extensive subglacial hydrological network. Data from mid-April show that subglacial water concentrates along the basal valleys in the lower catchment directly below where numerous moulins open later in the season. Additionally, we identify an unusually low apparent reflectivity feature at the catchment boundary of Russell and Isunnguata. We suggest that the apparent reflectivity anomaly is a result of high englacial attenuation losses associated with a basal temperate layer approximately 250 m thick and approximately 14 km (super 2) in area. This temperate layer was previously observed in another melt season from boreholes temperature measurements, suggesting that it is likely is a persistent and contiguous feature. Our results demonstrate the integration of observations and modeling are a powerful approach to characterize Greenland hydrology and its effect on ice sheet thermal state that may modify ice dynamics critically. JF - American Geophysical Union Fall Meeting AU - Chu, Winnie AU - Schroeder, Dustin M AU - Seroussi, Helene L AU - Bell, Robin E AU - Creyts, Timothy T AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract C51B EP - 0711 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1812213770?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Extensive+subglacial+hydrological+network+and+basal+temperate+layer+in+southwest+Greenland%3B+an+integrated+approach+of+radar+analysis+and+ice+sheet+modeling&rft.au=Chu%2C+Winnie%3BSchroeder%2C+Dustin+M%3BSeroussi%2C+Helene+L%3BBell%2C+Robin+E%3BCreyts%2C+Timothy+T%3BAnonymous&rft.aulast=Chu&rft.aufirst=Winnie&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-08-18 N1 - CODEN - #07548 ER - TY - JOUR T1 - Direct observations of rapid basal melting and bed topography in the grounding zones of the Dotson and Crosson ice shelves, West Antarctica AN - 1812213091; 2016-068696 AB - Glaciological changes of the Dotson and Crosson ice shelves and their tributary glaciers of Smith, Pope and Kohler are among the most noticeable in the Amundsen Sea Embayment region of West Antarctica. Here, we present sounding radar and laser altimetry observations of two aspects that are indispensable for understanding those changes: basal melting and bedrock topography in the grounding zones. We find that Smith Glacier in particular thinned by a remarkably fast 300-490 m between the years 2002 and 2009. Its grounding line has retreated far enough to be now at 2000 m below sea level in a previously identified trench. All three glacier grounding lines have already retreated down steeper parts of their bedrocks to flatter terrains, plausibly contributing to the reported slowing down in the acceleration of their ice volume discharges. The wider implications of the work emphasize the unprecedented perspectives that direct observation can offer of diverse grounding zone structures and evolution scenarios. JF - American Geophysical Union Fall Meeting AU - Khazendar, Ala AU - Rignot, Eric J AU - Schroeder, Dustin M AU - Seroussi, Helene L AU - Schodlok, Michael AU - Scheuchl, Bernd AU - Sutterley, Tyler C AU - Velicogna, Isabella AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract C51E EP - 08 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1812213091?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Direct+observations+of+rapid+basal+melting+and+bed+topography+in+the+grounding+zones+of+the+Dotson+and+Crosson+ice+shelves%2C+West+Antarctica&rft.au=Khazendar%2C+Ala%3BRignot%2C+Eric+J%3BSchroeder%2C+Dustin+M%3BSeroussi%2C+Helene+L%3BSchodlok%2C+Michael%3BScheuchl%2C+Bernd%3BSutterley%2C+Tyler+C%3BVelicogna%2C+Isabella%3BAnonymous&rft.aulast=Khazendar&rft.aufirst=Ala&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-08-18 N1 - CODEN - #07548 ER - TY - JOUR T1 - Operational system for estimating compaction of Arctic glacial firn and surface mass balance AN - 1812212958; 2016-068632 AB - NASA and other agencies are invested in obtaining measurements of Greenland Ice Sheet surface elevation with the objective of constraining the ice sheet's contribution to present and future sea level rise. However, a major limitation of repeat altimetry measurements, such as air and space-based surveys, is that variations in the density of surface accumulation and the firn layer must be constrained in order to relate changes in ice thickness to the overall ice sheet mass imbalance. The temporal variability of accumulation thickness and firn compaction rate is poorly constrained, particularly in regions subject to surface melt and refreezing. Additionally, recent warming and extreme melt events may be substantially changing the density of the firn, affecting altimeter measurements. This knowledge gap about snow accumulation and firn density, therefore, is a critical challenge to the ICESat-2 mission objectives. Our in-situ sensor packages, dubbed the Compaction Reconnaissance of Arctic Glacial Snow (CRAGS), will aid the deconvolution of surface change observations, with the goal of providing an operational system in concert with the launch of ICESat-2. The CRAGS prototype was deployed in April 2014 at 69.0754N, -45.6603E, and two fully-equipped systems were deployed in April 2015 at 69.0952N, -46.4446E and 69.0527N, -44.4281E. CRAGS is a tower system equipped with three instruments for measuring snow accumulation: a strain sensor, a sonar, and a snow scale. These systems will be taking measurements for at least two more years, but they are designed to last longer with limited maintenance. The use of a modular tower design allows for them to be extended higher for many years of observations. This method will supplement air and space-based observations, providing the polar science community with valuable ground-truth data regarding the state of the interior of the Greenland ice sheet. JF - American Geophysical Union Fall Meeting AU - Crowell, James M AU - Behar, Alberto AU - Howat, Ian M AU - de la Pena, Santiago AU - Thanga, Jekan AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract C43C EP - 0815 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1812212958?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Operational+system+for+estimating+compaction+of+Arctic+glacial+firn+and+surface+mass+balance&rft.au=Crowell%2C+James+M%3BBehar%2C+Alberto%3BHowat%2C+Ian+M%3Bde+la+Pena%2C+Santiago%3BThanga%2C+Jekan%3BAnonymous&rft.aulast=Crowell&rft.aufirst=James&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-08-18 N1 - CODEN - #07548 ER - TY - JOUR T1 - Bed topography under Antarctic outlet glaciers revealed by mass conservation and radar data AN - 1812212838; 2016-068693 AB - Bed topography, together with ice thickness, is an essential characteristic of glaciers and ice sheets for many glaciological applications. Despite significant technical advances, it remains challenging to measure ice thickness remotely, especially in deep troughs occupied by outlet glaciers. The method of mass conservation, that combines radar-derived ice thickness data with high-resolution InSAR-derived ice velocity vectors, provides an effective method for generating a high-resolution bed from sparse radar sounding profiles, and has been successfully applied along the coast of the Greenland Ice Sheet. Applying the same technique to the coast of the Antarctic Ice Sheet presents a number of challenges. The coverage of ice thickness data collected in Antarctica, for example, is much less comprehensive compared to Greenland, especially in the wake of NASA's Operation IceBridge (OIB) Mission in 2010-2015. Here, we combine radar sounder data collected by various centers (OIB/Center for Remote Sensing of Ice Sheets, the British Antarctic Survey and University of Texas) acquired between 1998 and 2011, with high-resolution ice motion data from interferometric SAR (ALOS PALSAR, RADARSAT-2 and Envisat ASAR) to reconstruct bed topography beneath major Antarctic outlet glaciers at an unprecedented level of detail. The results reveal some important features not known previously at that level of detail and shed light on the vulnerability of these glaciers in a warming climate. We find for example that Recovery glacier is deeper than in previous mappings and has long grooves parallel to the flow direction. Denman Glacier, East Antarctica, flow along a deep, narrow trough more than 2,000 m below sea level that extends more than 100 km inland. We find ridges and bumps in the vicinity of the grounding line of Thwaites Glacier, in the Amundsen Sea sector, that are consistent with the pattern of grounding line retreat. We have also a new mapping of the trough upstream of David Glacier and the Gogineni trough upstream Byrd Glacier. These features, mapped for the first time, have vast implications for the modeling of the Antarctic ice sheet in a warming climate. This work was performed at the UC Irvine under a contract with NASA's Cryospheric Sciences Program, grant NNX15AD55G. JF - American Geophysical Union Fall Meeting AU - Morlighem, Mathieu AU - Rignot, Eric J AU - Mouginot, Jeremie AU - Seroussi, Helene L AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract C51E EP - 02 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1812212838?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Bed+topography+under+Antarctic+outlet+glaciers+revealed+by+mass+conservation+and+radar+data&rft.au=Morlighem%2C+Mathieu%3BRignot%2C+Eric+J%3BMouginot%2C+Jeremie%3BSeroussi%2C+Helene+L%3BAnonymous&rft.aulast=Morlighem&rft.aufirst=Mathieu&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-08-18 N1 - CODEN - #07548 ER - TY - JOUR T1 - Spectral diversity of Ceres' surface as measured by VIR AN - 1807509568; 2016-066738 AB - The Dawn spacecraft has been acquiring data of dwarf planet Ceres since January 2015 (1). In particular, the VIS-IR spectrometer VIR (2) acquired data during approach to Ceres and the first two mapping orbits and it will continue its measurements during the last two mapping orbits (3). Ceres' average spectrum is characterized by a prominent absorption band at 2.7 micron and weaker bands in the 3.0-4.0 micron region while the visible and near-IR ranges lack prominent bands. This spectrum is well represented by a mixture of ammoniated phyllosilicates and other clays, Mg-carbonates, and dark material, like magnetite (4). VIR is observing spectral variability all across the surface of Ceres particularly evident in changes of the shape of the spectra in the range from 0.5 to 4.0 micron. The spectral diversity was already evident in the 11Km/px spectral images from the approach phase (5). The spectral slope in the visual spectral range in addition to the center and depth of the detected absorption bands in the IR range have been computed and mapped. The maps presented here are based on data from Survey orbit acquired in June 2015 with 1.1Km/px of nominal resolution and are the most spatially resolved global view of the surface by VIR. They have been used to study the distribution of the spectral heterogeneities on the surface. The parameters mapped so far, in particular the spectral slope in the VIS range, has a distribution which appears to be associated with impact craters and local events on the surface rather than global processes. The analysis of higher spatial resolution spectra that will be acquired in later phases of the Dawn encounter is needed to confirm this correlation and to provide an interpretation on its role on the evolution of Ceres' surface. 1) Russell, C. T. et al. Dawn arrives at Ceres: results of Survey orbits, 2015, EPSC. 2) De Sanctis, M. C. et al., The VIR Spectrometer, 2011, Space Sci. Rev. 3) Ammannito E. et al., Spectral diversity of Ceres surface as measured by VIR, 2015, EPSC. 4) De Sanctis, M. C. et al. Ammoniated phyllosilicates on dwarf planet Ceres reveal an outer solar system origin, Nature submitted, 2015. 5) Zambon F. et al., Color variations on Ceres derived by Dawn/VIR: Implications for the surface composition, 2015, EPSC JF - American Geophysical Union Fall Meeting AU - Ammannito, E AU - De Sanctis, M C AU - Capaccioni, F AU - Capria, M T AU - Carrorro, F Giacomo AU - Ciarniello, M AU - Combe, J P AU - Frigeri, A AU - Fonte, S AU - Giardino, M AU - Jaumann, R AU - Joy, S P AU - Longobardo, A AU - Magni, G AU - McCord, T B AU - McFadden, L A AU - McSween, H Y, Jr AU - Palomba, Ernesto AU - Pieters, C M AU - Polanskey, C A AU - Raponi, A AU - Rayman, M AU - Raymond, C A AU - Tosi, F AU - Zambon, F AU - Russell, C T AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract B51A EP - 0414 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1807509568?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Spectral+diversity+of+Ceres%27+surface+as+measured+by+VIR&rft.au=Ammannito%2C+E%3BDe+Sanctis%2C+M+C%3BCapaccioni%2C+F%3BCapria%2C+M+T%3BCarrorro%2C+F+Giacomo%3BCiarniello%2C+M%3BCombe%2C+J+P%3BFrigeri%2C+A%3BFonte%2C+S%3BGiardino%2C+M%3BJaumann%2C+R%3BJoy%2C+S+P%3BLongobardo%2C+A%3BMagni%2C+G%3BMcCord%2C+T+B%3BMcFadden%2C+L+A%3BMcSween%2C+H+Y%2C+Jr%3BPalomba%2C+Ernesto%3BPieters%2C+C+M%3BPolanskey%2C+C+A%3BRaponi%2C+A%3BRayman%2C+M%3BRaymond%2C+C+A%3BTosi%2C+F%3BZambon%2C+F%3BRussell%2C+C+T%3BAnonymous&rft.aulast=Ammannito&rft.aufirst=E&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - Number of references - 5 N1 - PubXState - DC N1 - Last updated - 2016-07-29 N1 - CODEN - #07548 ER - TY - JOUR T1 - Use of (super 13) C-labeled substrates to determine relative methane production rates in hypersaline microbial communities AN - 1807508949; 2016-064388 AB - Rates and pathways of methane production were determined from photosynthetic soft microbial mats and gypsum-encrusted endoevaporites collected in hypersaline environments from California, Mexico and Chile, as well as an organic-rich mud from a pond in the El Tatio volcanic fields, Chile. Samples (mud, homogenized soft mats and endoevaporites) were incubated anaerobically with deoxygenated site water, and the increase in methane concentration through time in the headspaces of the incubation vials was used to determine methane production rates. To ascertain the substrates used by the methanogens, 13C-labeled methylamines, methanol, dimethylsulfide, acetate or bicarbonate were added to the incubations (one substrate per vial) and the stable isotopic composition of the resulting methane was measured. The vials amended with (super 13) C-labeled methylamines produced the most (super 13) C-enriched methane, generally followed by the (super 13) C-labeled methanol-amended vials. The stable isotope data and the methane production rates were used to determine first order rate constants for each of the substrates at each of the sites. Estimates of individual substrate use revealed that the methylamines produced 55 to 92% of the methane generated, while methanol was responsible for another 8 to 40%. JF - American Geophysical Union Fall Meeting AU - Kelley, C A AU - Bebout, B AU - Chanton, J AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract B33B EP - 0660 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1807508949?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Use+of+%28super+13%29+C-labeled+substrates+to+determine+relative+methane+production+rates+in+hypersaline+microbial+communities&rft.au=Kelley%2C+C+A%3BBebout%2C+B%3BChanton%2C+J%3BAnonymous&rft.aulast=Kelley&rft.aufirst=C&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-07-29 N1 - CODEN - #07548 ER - TY - JOUR T1 - Modeling natural wetlands; a new global framework built on wetland observations AN - 1807504745; 2016-064429 AB - Natural wetlands are the world's largest methane (CH4) source, and their distribution and CH4 fluxes are sensitive to interannual and longer-term climate variations. Wetland distributions used in wetland-CH4 models diverge widely, and these geographic differences contribute substantially to large variations in magnitude, seasonality and distribution of modeled methane fluxes. Modeling wetland type and distribution - closely tied to simulating CH4 emissions - is a high priority, particularly for studies of wetlands and CH4 dynamics under past and future climates. Methane-wetland models either prescribe or simulate methane-producing areas (aka wetlands) and both approaches result in predictable over- and under-estimates. 1) Monthly satellite-derived inundation data include flooded areas that are not wetlands (e.g., lakes, reservoirs, and rivers), and do not identify non-flooded wetlands. 2) Models simulating methane-producing areas overwhelmingly rely on modeled soil moisture, systematically over-estimating total global area, with regional over- and under-estimates, while schemes to model soil-moisture typically cannot account for positive water tables (i.e., flooding). Interestingly, while these distinct hydrological approaches to identify wetlands are complementary, merging them does not provide critical data needed to model wetlands for methane studies. We present a new integrated framework for modeling wetlands, and ultimately their methane emissions, that exploits the extensive body of data and information on wetlands. The foundation of the approach is an existing global gridded data set comprising all and only wetlands, including vegetation information. This data set is augmented with data inter alia on climate, inundation dynamics, soil type and soil carbon, permafrost, active-layer depth, growth form, and species composition. We investigate this enhanced wetland data set to identify which variables best explain occurrence and characteristics of observed wetland ecosystems. The novelty of the new approach is that it starts from what we know about wetlands, builds ecosystem-specific models from these observations, and avoids known biases in current hydrology-based approaches to wetland definition in methane models. JF - American Geophysical Union Fall Meeting AU - Matthews, Elaine AU - Romanski, Joy N AU - Olefeldt, D AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract B41C EP - 0430 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1807504745?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Modeling+natural+wetlands%3B+a+new+global+framework+built+on+wetland+observations&rft.au=Matthews%2C+Elaine%3BRomanski%2C+Joy+N%3BOlefeldt%2C+D%3BAnonymous&rft.aulast=Matthews&rft.aufirst=Elaine&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-07-29 N1 - CODEN - #07548 ER - TY - JOUR T1 - Inferring glacial history and subglacial process through analysis of cosmogenic nuclides in icebound cobbles AN - 1803774026; 2016-060025 AB - Surfaces below ice sheets preserve long-term records of glacial history and process. Here, we study the isotopic composition of cobble-sized rocks sourced subglacially and transported to the ice margin by ice flow and/or the subglacial hydrologic system. We analyzed in situ cosmogenic 10Be in 86 cobbles collected directly from ice and outwash channels at three locations in western Greenland: Kangerlussuaq, Ilulissat, and Upernavik. These cobbles were eroded from up-ice bedrock surfaces and contain (super 10) Be indicative of the exposure, burial, and erosion history of the now subglacial landscape. Measured (super 10) Be/ (super 9) Be ratios were detectable for all but several samples (average blank (super 10) Be/ (super 9) Be = 4.2+ or -1.7X10 (super -16) , n=24) and form a right-skewed distribution. Calculated (super 10) Be concentrations are generally low (median = 1.0X10 (super 3) atoms g (super -1) ) but 6 of the 86 exceed 10 (super 4) atoms g (super -1) . One sample contains 1.1X10 (super 5) atoms g (super -1) , two orders of magnitude above the median and equivalent to >20 ky of surface exposure at sea level. Concentrations of (super 10) Be are not separable by sample site or type. Measured (super 10) Be may have been produced during previous interglacial periods or the mid Holocene when the ice margin retreated, or by deep muogenic production of (super 10) Be before glaciation of the landscape in the Pliocene. Because most cobbles preserve little inherited (super 10) Be, we infer that the subglacial area from which the samples were sourced has been primarily warm-based. The few cobbles with more (super 10) Be may have experienced exposure during the Holocene Optimum and/or previous interglacial periods when the ice margin retreated or may have been sourced from areas that were previously cold-based. We also sampled three cobbles from outside the current ice margin at each of the three sites. These cobbles record exposure since the last deglaciation plus any nuclides inherited from previous interglacial periods. Measured 10Be concentrations in Kangerlussuaq and Ilulissat are similar to or slightly exceed (by several thousand atoms g (super -1) , similar to the median (super 10) Be concentration in the icebound cobbles) expected (super 10) Be concentrations based on deglaciation age estimates from independent studies. Measured concentrations are less than expected in Upernavik, possibly reflecting post-glacial shielding of the cobbles or inherited 10Be in samples used to estimate deglaciation timing. JF - American Geophysical Union Fall Meeting AU - Corbett, Lee B AU - Bierman, Paul R AU - Neumann, Thomas AU - Graly, Joseph A AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract C11A EP - 0745 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803774026?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Inferring+glacial+history+and+subglacial+process+through+analysis+of+cosmogenic+nuclides+in+icebound+cobbles&rft.au=Corbett%2C+Lee+B%3BBierman%2C+Paul+R%3BNeumann%2C+Thomas%3BGraly%2C+Joseph+A%3BAnonymous&rft.aulast=Corbett&rft.aufirst=Lee&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-07-14 N1 - CODEN - #07548 ER - TY - JOUR T1 - Recent trends of the tropospheric vapor deuterium to hydrogen ratio and their climatological significance AN - 1800396911; 2016-058142 AB - Preliminary analysis of satellite-borne Tropospheric Emission Spectrometer (TES) data reveals recent trends in both the 900 hPa deuterium to hydrogen (D/H) ratio of water vapor, and the 500-800 hPa water vapor mixing ratio, rE. In the Arctic, vapor dD decreased at 1.9 ppm/yr (p=0.041) from 2004 to at least 2009, and rE increased at 0.041 g kg-1/yr (p=0.065). The ratio of the two trends is -46 ppm/ g kg-1, comparable with the dD vs. rE regression slope of -29 ppm/ g kg-1 (p<0.0001). In low latitudes (15-40 degrees N) the dD trend is much smaller and opposite in sign, but statistically insignificant (+0.42 ppm/yr, p=0.64), while rE also has a positive but statistically insignificant trend of +0.037 g kg-1/yr (p=0.58). During this period, Arctic sea surface temperature (SST) increased slightly, so its positive effect on equilibrium fractionation is the wrong sign to explain the observed decrease of Arctic dD. Making the preliminary assumption that these temporal variations in vapor are robust relative to TES data calibration, we investigate them using a marine boundary layer (MBL) model with isotopes. The model includes meteorological processes such as subsidence and convergence of air from the mid and upper troposphere, and height-dependent turbulent mixing in the MBL. The convergence component allows us to investigate the effect of the mixing ratio of air aloft (rE) on the isotopic composition of the MBL. Model results show that vapor delta D in the MBL decreases as rE increases. This is because the admixture of isotopically depleted vapor from the upper atmosphere, which increases with rE, results in isotopic depletion near the surface. However, the sensitivity of dD to rE is strongly nonlinear; it is -30.33 ppm/g kg-1 in the Arctic, but only -5.25 ppm/g kg-1 in the subtropics. This explains both the negative trend of dD in the Arctic and lack of trend in the subtropics. In addition, the simulated Arctic sensitivity compares well with the observed values of -46 and -29 ppm/ g kg-1. The model also shows that the effects of other variables, such as SST and turbulent mixing rate, have minor influence during this period. The recent gain in moisture of the Arctic upper troposphere, which has been both directly observed and inferred from the decrease of MBL delta D, is most likely due to global warming or decreasing Arctic sea ice. JF - American Geophysical Union Fall Meeting AU - Fan, N AU - Posmentier, E S AU - Worden, J R AU - Samuels-Crow, K E AU - Feng, X AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract PP11B EP - 2230 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800396911?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Recent+trends+of+the+tropospheric+vapor+deuterium+to+hydrogen+ratio+and+their+climatological+significance&rft.au=Fan%2C+N%3BPosmentier%2C+E+S%3BWorden%2C+J+R%3BSamuels-Crow%2C+K+E%3BFeng%2C+X%3BAnonymous&rft.aulast=Fan&rft.aufirst=N&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-06-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Developing a validated long-term satellite-based albedo record in the central Alaska Range to improve regional hydroclimate reconstructions AN - 1800396791; 2016-058342 AB - Mountain glaciers around the world, particularly in Alaska, are experiencing significant surface mass loss from rapid climatic shifts and constitute a large proportion of the cryosphere's contribution to sea level rise. Surface albedo acts as a primary control on a glacier's mass balance, yet it is difficult to measure and quantify spatially and temporally in steep, mountainous settings. During our 2013 field campaign in Denali National Park to recover two surface to bedrock ice cores, we used an Analytical Spectral Devices (ASD) FieldSpec4 Standard Resolution spectroradiometer to measure incoming solar radiation, outgoing surface reflectance and optical grain size on the Kahiltna Glacier and at the Kahiltna Base Camp. A Campbell Scientific automatic weather station was installed on Mount Hunter (3900 m) in June 2013, complementing a longer-term (2008-present) station installed at Kahiltna Base Camp (2100 m). Use of our in situ data aids in the validation of surface albedo values derived from Moderate Resolution Imaging Spectroradiometer (MODIS) and Landsat satellite imagery. Comparisons are made between ASD FieldSpec4 ground measurements and 500 m MODIS imagery to assess the ability of MODIS to capture the variability of surface albedo across the glacier surface. The MODIS MCD43A3 BRDF/Albedo Product performs well at Kahiltna Base Camp (<5% difference from ASD shortwave broadband data), but low biases in MODIS albedo (10-28% relative to ASD data) appear to occur along the Kahiltna Glacier due to the snow-free valley walls being captured in the 500 m MODIS footprint. Incorporating Landsat imagery will strengthen our interpretations and has the potential to produce a long-term (1982-present) validated satellite albedo record for steep and mountainous terrain. Once validation is complete, we will compare the satellite-derived albedo record to the Denali ice core accumulation rate, aerosol records (i.e. volcanics and biomass burning), and glacier mass balance data. This research will ultimately contribute to an improved understanding of the relationship between glacier albedo, surface processes, and regional glacier hydroclimate. JF - American Geophysical Union Fall Meeting AU - Kreutz, Karl J AU - Godaire, Timothy P AU - Burakowski, Elizabeth A AU - Winski, Dominic AU - Campbell, Seth W AU - Wang, Zhuosen AU - Sun, Qingsong AU - Hamilton, Gordon S AU - Birkel, Sean D AU - Wake, Cameron P AU - Osterberg, Erich C AU - Schaaf, Crystal AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract PP33A EP - 2273 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800396791?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Developing+a+validated+long-term+satellite-based+albedo+record+in+the+central+Alaska+Range+to+improve+regional+hydroclimate+reconstructions&rft.au=Kreutz%2C+Karl+J%3BGodaire%2C+Timothy+P%3BBurakowski%2C+Elizabeth+A%3BWinski%2C+Dominic%3BCampbell%2C+Seth+W%3BWang%2C+Zhuosen%3BSun%2C+Qingsong%3BHamilton%2C+Gordon+S%3BBirkel%2C+Sean+D%3BWake%2C+Cameron+P%3BOsterberg%2C+Erich+C%3BSchaaf%2C+Crystal%3BAnonymous&rft.aulast=Kreutz&rft.aufirst=Karl&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-06-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Remote sensing of the isotopic composition of water vapor; application to hydrology and climate AN - 1800396790; 2016-058262 AB - Remotely sensed measurements of water vapor and its isotopologues are inferred by how these molecules spectrally affect light as it is transferred from some source (e.g., the Sun, the Earth, or a laser), through the atmosphere, to a detector. Consequently, the use of satellite or ground based remotely sensed measurements of the isotopic composition of water vapor to investigate the global water cycle depends on the viewing geometry, photon source, and instrument characteristics which in turn affects the vertical resolution of the measurement and choice of regularization used to infer these quantities from a spectral radiance. Users of these data must therefore take these aspects formally into account when comparing these remotely sensed data to models or independent measurements. In this presentation I will summarize how profiles of the HDO/H2O ratio are inferred from Aura Tropospheric Emission Spectrometer thermal IR radiances and then how to account for the vertical resolution and regularization used in this "retrieval" when comparing to other models and data. In particular I will show comparisons of these satellite data to aircraft and model profiles of HDO and H2O as well as discuss previous and ongoing research into the global water cycle, climate, and paleo-climate that use these data. JF - American Geophysical Union Fall Meeting AU - Worden, J AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract PP13E EP - 02 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800396790?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Remote+sensing+of+the+isotopic+composition+of+water+vapor%3B+application+to+hydrology+and+climate&rft.au=Worden%2C+J%3BAnonymous&rft.aulast=Worden&rft.aufirst=J&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-06-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Environmental consequences of big nasty impacts on the early Earth AN - 1800396738; 2016-058320 AB - The geological record of the Archean Earth is spattered with impact spherules from a dozen or so major cosmic collisions involving Earth and asteroids or comets (Lowe, Byerly 1986, 2015). Extrapolation of the documented deposits suggests that most of these impacts were as big or bigger than the Chicxulub event that famously ended the reign of the thunder lizards. As the Archean impacts were greater, the environmental effects were also greater. The number and magnitude of the impacts is bounded by the lunar record. There are no lunar craters bigger than Chicxulub that date to Earth's mid-to-late Archean. Chance dictates that Earth experienced approximately 10 impacts bigger than Chicxulub between 2.5 Ga and 3.5 Ga, the biggest of which were approximately 30-100X more energetic than Chicxulub. To quantify the thermal consequences of big impacts on old Earth, we model the global flow of energy from the impact into the environment. The model presumes that a significant fraction of the impact energy goes into ejecta that interact with the atmosphere. Much of this energy is initially in rock vapor, melt, and high speed particles. (i) The upper atmosphere is heated by ejecta as they reenter the atmosphere. The mix of hot air, rock vapor, and hot silicates cools by thermal radiation. Rock raindrops fall out as the upper atmosphere cools. (ii) The energy balance of the lower atmosphere is set by radiative exchange with the upper atmosphere and with the surface, and by evaporation of seawater. Susequent cooling is governed by condensation of water vapor. (iii) The oceans are heated by thermal radiation and rock rain and cooled by evaporation. Surface waters become hot and salty; if a deep ocean remains it is relatively cool. Subsequently water vapor condenses to replenish the oceans with hot fresh water (how fresh depending on continental weathering, which might be rather rapid under the circumstances). (iv) The surface temperature of dry land is presumed to be the same as the lower atmosphere. A thermal wave propagates into the land at a rate set by conduction. Impacts larger than Chicxulub can raise the surface temperature by tens, hundreds, or even thousands of degrees, and evaporate meters to hundreds of meters of water. The biggest should have vitrified exposed dry land. More results--including shock chemistry--are for the talk, as here we have run out of space. JF - American Geophysical Union Fall Meeting AU - Zahnle, Kevin J AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract PP31E EP - 01 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800396738?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Environmental+consequences+of+big+nasty+impacts+on+the+early+Earth&rft.au=Zahnle%2C+Kevin+J%3BAnonymous&rft.aulast=Zahnle&rft.aufirst=Kevin&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-06-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - The effect of stratospheric water vapor in large volcanic eruptions on climate and atmospheric composition AN - 1797538111; 2016-053168 AB - Large, explosive volcanic eruptions that inject material into the stratosphere have a significant impact on atmospheric composition and climate. Understanding and generalizing these effects is crucial to the development of climate models. Previously, volcanic forcing was crudely parameterized in all climate models which may be a source of large error in past-climate simulations. Here we investigate how water vapor, in addition to sulfur dioxide, from volcanic eruptions affect atmospheric chemistry and climate using NASA's atmospheric general circulation model GISS Model-E2. Three simulations were considered: a control run with no eruption, a run with a summertime dry eruption of 18 Tg of SO2, and a run with a summertime eruption containing 150 MT of water vapor in addition to 18 Tg of SO2. These amounts roughly approximate the mass of water and SO2 injected during the 1991 Mt. Pinatubo eruption. They were also injected at the same geographic location, directly into 10-layers of the lower to mid stratosphere. Each simulation was set in a pre-industrial atmosphere and monthly averages from the control were subtracted from the data in order to avoid signals from anthropogenic and meteorological effects, respectively. Comparing the dry and wet eruptions, there is a quicker forming but shorter lived sulfate aerosol population from the eruption containing water vapor. It was also observed that the aerosols spread more evenly between the Northern and Southern hemispheres when water was added to the eruption, compared to the dry eruption which was mostly contained in the Northern hemisphere. These differences more rapidly increase sulfate aerosol optical depth and cause a climatic effect of a quicker, shorter-lived decrease in surface temperatures and increase in stratospheric temperatures. The quicker signal from the wet eruption matches observations more closely than that of the dry eruption. This understanding will help in generalizing the climatic effects of volcanoes and reduce the error introduced in historical climate model simulations-leading to a better understanding of our changing climate system. JF - American Geophysical Union Fall Meeting AU - Case, P A AU - Tsigaridis, K AU - LeGrande, A N AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract A51N EP - 0270 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1797538111?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=The+effect+of+stratospheric+water+vapor+in+large+volcanic+eruptions+on+climate+and+atmospheric+composition&rft.au=Case%2C+P+A%3BTsigaridis%2C+K%3BLeGrande%2C+A+N%3BAnonymous&rft.aulast=Case&rft.aufirst=P&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-06-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Characterizing thawing permafrost with the Miniaturized Laser Heterodyne Radiometer (mini-LHR) through column measurements of methane AN - 1797535013; 2016-050755 AB - We present mini-LHR measurements of column CH4 from our preliminary field campaign outside of Fairbanks, AK in June 2015. The mini-LHR is fully automated and works in tandem with the AERONET sun photometer for collection of column CH4 every 15 minutes. As part of a comprehensive array of ground based instruments, measurements made by the mini-LHR will aid in monitoring of changes in atmospheric greenhouse gas emissions and help interpret data collected by space-born instruments. The mini-LHR is a passive variation of typical heterodyne radiometry instruments, using sunlight as the light source for measuring CH4 in the infrared. Collecting through collimation optics mounted on the AERONET tracker, the sunlight is chopped in an optical chopper and mixed with a local oscillator in a fast photoreciever (InGaAs detector). The amplitude of the resultant RF (radio frequency) beat signal directly correlates with the concentration of the column gas being measured. Working in conjunction with ground penetrating radar, covariance flux tower, and high-resolution surface CO2 and CH4 measurements, our column CH4 measurements contribute to a holistic view of the atmospheric evolution and response to permafrost thaw. With the intent to expand our observational network to other North American sites, our column CH4 measurements will be instrumental in showing the effects of permafrost thaw on global CH4 levels, as well as benefiting ongoing efforts in retrospective and predictive simulations of greenhouse gasses. JF - American Geophysical Union Fall Meeting AU - Wilson, E L AU - DiGregorio, A AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract B31D EP - 0582 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1797535013?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Characterizing+thawing+permafrost+with+the+Miniaturized+Laser+Heterodyne+Radiometer+%28mini-LHR%29+through+column+measurements+of+methane&rft.au=Wilson%2C+E+L%3BDiGregorio%2C+A%3BAnonymous&rft.aulast=Wilson&rft.aufirst=E&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-06-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - The dynamic state of the ocean and atmosphere during megadroughts in the American West AN - 1797532531; 2016-053385 AB - Multidecadal droughts are a prominent feature of the Common Era paleoclimate record in the American West, particularly during the Medieval Climate Anomaly. These megadroughts represent an important out-of-sample target for validating the ability of Coupled General Circulation Models to adequately characterize drought risk over the near-term future. Such model validations, however, require a substantially improved understanding of the atmosphere-ocean state during megadroughts. Here we use spatiotemporal tree-ring reconstructions of Northern Hemisphere hydroclimate to infer the atmosphere-ocean dynamics that underlie megadroughts, and find that these features are consistently associated with ten-to-thirty year periods of frequent cold conditions in the tropical Pacific Ocean. Nevertheless, a prominent hypothesis that there were multiple centuries of persistently La Nina-like conditions during the Medieval Climate Anomaly is inconsistent with our analysis of the tree-ring reconstructions. Instead, warm conditions in the Atlantic likely played a necessary role in amplifying drying during this period. These results provide a framework for evaluating the performance of General Circulation Models, which simulate megadroughts under a range of different atmosphere-ocean states, including stochastic atmospheric variability, and clarify the dynamical mechanisms that will determine the risk of megadroughts in the future. JF - American Geophysical Union Fall Meeting AU - Coats, S AU - Smerdon, J E AU - Cook, B AU - Seager, R AU - Cook, E R AU - Anchukaitis, K J AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract PP44B EP - 08 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1797532531?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=The+dynamic+state+of+the+ocean+and+atmosphere+during+megadroughts+in+the+American+West&rft.au=Coats%2C+S%3BSmerdon%2C+J+E%3BCook%2C+B%3BSeager%2C+R%3BCook%2C+E+R%3BAnchukaitis%2C+K+J%3BAnonymous&rft.aulast=Coats&rft.aufirst=S&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-06-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - CALIPSO observations of changes in dust properties during Transatlantic transport AN - 1793203550; 2016-049155 AB - The vertical distribution of dust shape and size is highly important for understanding and estimating dust radiative forcing. We used CALIPSO nighttime datasets to examine the vertical structure and evolution of Saharan dust during transatlantic transport. The results show that most Saharan dust is lifted to high altitude and descends after traveling thousands of km-s. Initially, the depolarization ratio and color ratio of Saharan dust are uniformly distributed along altitude, suggesting vertically constant particle size and shape distributions. During transport, the depolarization ratio of Saharan dust drops at lower altitudes, suggesting that particle shapes become less irregular; while at relatively high altitudes, the depolarization ratio of dust increases during transport. The changes observed during transport likely come from the effects of gravitational sorting caused by variations in particle shape and size. A simple model with only two shapes qualitatively captures these features and confirms that shape-induced differential settling contribute significantly to the observed vertical stratification of dust properties. In addition, the effect of clouds on dust properties will be also discussed. JF - American Geophysical Union Fall Meeting AU - Marshak, Alexander AU - Yang, Weidong AU - Varnai, Tamas AU - Kostinski, Alex B AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract A22D EP - 05 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1793203550?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=CALIPSO+observations+of+changes+in+dust+properties+during+Transatlantic+transport&rft.au=Marshak%2C+Alexander%3BYang%2C+Weidong%3BVarnai%2C+Tamas%3BKostinski%2C+Alex+B%3BAnonymous&rft.aulast=Marshak&rft.aufirst=Alexander&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-06-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - The impacts of the 2014 eruption of Holuhraun in Iceland; the tropospheric equivalent of Mount Pinatubo AN - 1793203433; 2016-049199 AB - During the period 31st August September 2014-28th February 2015, a significant fissure eruption occurred in the Holuhraun area of Iceland. Unlike the well documented eruption of Eyjafjallajokull in 2010, this eruption has received relatively little public attention as the emissions are at low altitude, there is little accompanying ash, and thus there has not been any impact on trans-Atlantic air-traffic. However, the emission rates of sulphur dioxide from the eruption during the first two months was at least four times those from the entire 28 European member states and the continuous nature of the eruption means that by the end of the eruption, the emissions of sulphur dioxide exceeded the total annual emission targets of all of Europe. We provide a comprehensive global modelling estimate of the impact on cloud microphysics and show that the empirical relationship between degassed sulphur and TiO (sub 2) /FeO ratios derived from prior Icelandic basaltic flood lava has undoubted utility. The impact of the sulphur dioxide cloud droplet size is clearly identified in satellite retrievals over the entire North Atlantic. Pristine clouds of lesser reflectivity were replaced by polluted clouds of higher reflectivity. This eruption provides an ideal test bed for validating models and inter-comparing observations of aerosol-cloud-interactions. Simulations with HadGEM3 including a detailed aerosol-microphysical scheme show excellent agreement with observations of cloud effective radius and cloud droplet number concentration and we use the model to assess the detectability of other variables such as aerosol optical depth, cloud liquid water path, cloud optical depth and radiation forcing. We conclude that, just as the explosive eruption of Pinatubo into the stratosphere provided the basis for many model and satellite analysis and inter-comparisons, the Holuhraun eruption provides a similar counterpart for focussing analyses of tropospheric cloud-aerosol interactions. JF - American Geophysical Union Fall Meeting AU - Platnick, Steven E AU - Haywood, J M AU - Malavelle, F AU - Jones, Andy AU - Bellouin, N AU - Boucher, Olivier AU - Bauduin, S AU - Carslaw, K S AU - Clarisse, L AU - Coe, Hugh AU - Dalvi, Mohit AU - Dhomse, S S AU - Gettelman, Andrew AU - Grosvenor, D AU - Hartley, M E AU - Johnson, Ben T AU - Johnson, Colin AU - Knight, Jeff AU - Kristjansson, J E AU - Mann, G W AU - O'Connor, Fiona M AU - Schmidt, A AU - Stephens, Graeme L AU - Takahashi, Hanii AU - Allan, R P AU - Hawcroft, M AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract A41O EP - 07 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1793203433?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=The+impacts+of+the+2014+eruption+of+Holuhraun+in+Iceland%3B+the+tropospheric+equivalent+of+Mount+Pinatubo&rft.au=Platnick%2C+Steven+E%3BHaywood%2C+J+M%3BMalavelle%2C+F%3BJones%2C+Andy%3BBellouin%2C+N%3BBoucher%2C+Olivier%3BBauduin%2C+S%3BCarslaw%2C+K+S%3BClarisse%2C+L%3BCoe%2C+Hugh%3BDalvi%2C+Mohit%3BDhomse%2C+S+S%3BGettelman%2C+Andrew%3BGrosvenor%2C+D%3BHartley%2C+M+E%3BJohnson%2C+Ben+T%3BJohnson%2C+Colin%3BKnight%2C+Jeff%3BKristjansson%2C+J+E%3BMann%2C+G+W%3BO%27Connor%2C+Fiona+M%3BSchmidt%2C+A%3BStephens%2C+Graeme+L%3BTakahashi%2C+Hanii%3BAllan%2C+R+P%3BHawcroft%2C+M%3BAnonymous&rft.aulast=Platnick&rft.aufirst=Steven&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-06-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - Directly attributing methane emissions to point source locations using the next generation Airborne Visible/Infrared Imaging Spectrometer (AVIRIS-NG) AN - 1793203248; 2016-049173 AB - Imaging spectrometers like the next generation Airborne Visible/Infrared Imaging Spectrometer (AVIRIS-NG) are well suited for identifying methane point sources by covering large regions with the high spatial resolution necessary to resolve emissions. A controlled release experiment at the Rocky Mountain Oilfield Testing Center (RMOTC) showed detectable methane plumes at multiple flux rates and flight altitudes. Images of plumes agreed with wind direction measured at ground stations and were consistently present for fluxes as low as 0.09 kt/year (14.16 cubic meters per hour; 500 standard cubic feet per hour, scfh). In some cases plumes were detected as low as 0.02 kt/year (3.40 cubic meters per hour; 120 scfh), indicating that AVIRIS-NG has the capability of detecting a number of fugitive methane source categories for natural gas fields. Following the RMOTC campaign, real time detection and geolocation of methane plumes has been implemented using an operator interface that overlays plumes on a true color image acquired by AVIRIS-NG. This has facilitated surveys over existing oil and gas fields to identify and attribute methane emissions to individual point source locations, including well pads known to use hydraulic fracturing and natural gas pipelines. An imaging spectrometer built exclusively for detection, quantification, and attribution of methane plumes would have improved sensitivity compared to AVIRIS-NG. The Airborne Methane Plume Spectrometer (AMPS) instrument concept is mature, ready for development, and would provide a spectral resolution of 1 nm and a detection threshold of approximately 0.28 cubic meters per hour (10 scfh). By offering the potential to identify point source locations, airborne imaging spectrometers could have particular utility for resolving the large uncertainties associated with anthropogenic emissions, including industrial point source emissions and fugitive methane from the oil and gas industry. Fig. 1: True color image subset with superimposed methane plume. Google Earth imagery with finer spatial resolution is also included from June 2014 (red box), indicating likely methane source are tanks (likely either produced water storage tanks or condensate tanks). According to online databases, this well pad uses hydraulic fracturing for natural gas extraction. JF - American Geophysical Union Fall Meeting AU - Thorpe, Andrew K AU - Thompson, David Ray AU - Frankenberg, Christian AU - Aubrey, Andrew D AU - Bue, Brian D AU - Green, Robert O AU - Kort, E A AU - Eastwood, Michael L AU - Helmlinger, Mark C AU - Nolte, Scott H AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract A24F EP - 05 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1793203248?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Directly+attributing+methane+emissions+to+point+source+locations+using+the+next+generation+Airborne+Visible%2FInfrared+Imaging+Spectrometer+%28AVIRIS-NG%29&rft.au=Thorpe%2C+Andrew+K%3BThompson%2C+David+Ray%3BFrankenberg%2C+Christian%3BAubrey%2C+Andrew+D%3BBue%2C+Brian+D%3BGreen%2C+Robert+O%3BKort%2C+E+A%3BEastwood%2C+Michael+L%3BHelmlinger%2C+Mark+C%3BNolte%2C+Scott+H%3BAnonymous&rft.aulast=Thorpe&rft.aufirst=Andrew&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-06-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - Estimating emissions of toxic hydrocarbons from natural gas production sites in the Barnett Shale region AN - 1789753840; 2016-042535 AB - Throughout the past decade, shale gas operations have moved closer to urban centers and densely populated areas, contributing to growing public concerns regarding exposure to hazardous air pollutants (HAPs). These HAPs include gases like hexane, 1,3-butadiene and BTEX compounds, which can cause minor health effects from short-term exposure or possibly cancer due to prolonged exposure. During the Barnett Shale Coordinated Campaign in October, 2013, ground-based whole air samples revealed enhancements in several of these toxic volatile organic compounds (VOCs) downwind of natural gas well pads and compressor stations. Two methods were used to estimate the emission rate of several HAPs in the Barnett Shale. The first method utilized CH4 flux measurements derived from the Picarro Mobile Flux Plane (MFP) and taken concurrently with whole air samples, while the second used a CH4 emissions inventory developed for the Barnett Shale region. From these two approaches, the regional emission estimate for benzene (C6H6) ranged from 48 + or - 16 to 84 + or - 26 kg C6H6 hr-1. A significant regional source of atmospheric benzene is evident, despite measurement uncertainty and limited number of samples. The extent to which these emission rates equate to a larger public health risk is unclear, but is of particular interest as natural gas productions continues to expand. JF - American Geophysical Union Fall Meeting AU - Marrero, J E AU - Townsend-Small, A AU - Lyon, D R AU - Tsai, T AU - Meinardi, S AU - Blake, D R AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract A11M EP - 0252 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789753840?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Estimating+emissions+of+toxic+hydrocarbons+from+natural+gas+production+sites+in+the+Barnett+Shale+region&rft.au=Marrero%2C+J+E%3BTownsend-Small%2C+A%3BLyon%2C+D+R%3BTsai%2C+T%3BMeinardi%2C+S%3BBlake%2C+D+R%3BAnonymous&rft.aulast=Marrero&rft.aufirst=J&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-05-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - Polluted dust classification and its optical properties analysis using CALIPSO data and simulation AN - 1789748760; 2016-042508 AB - In CALIPSO Level 2 aerosol data, dust particles are classified into two subtypes, namely, pure dust and polluted dust based on lidar backscatter, depolarization ratio and surface types. In this research, the polluted dust subtype is found to have two distinct modes in terms of integrated depolarization ratio (IDR) and integrated total color ratio (ICR). Dust with smaller IDR and ICR occurs mainly over areas with strong smoke emissions such as industrial cities. This kind of polluted dust originating from East Asia is also found over the Pacific Ocean. In contrast, the other type originating from the Saharan desert with larger IDR and ICR occurs mainly over the Atlantic Ocean. The disparities of IDR and ICR may result from different pollutants. The polluted dust with smaller ICR and IDR should have stronger absorption of light and may contain black carbon. Other chemical compounds such as sea salts may account for polluted dust with larger ICR and IDR. To further separate the types of polluted dust, cluster analysis is applied to determine the centroid of each type in terms of IDR and ICR. Furthermore, scattering models of dust mixed with various pollutants are constructed to be included in a CALIPSO simulator. The simulated IDR and ICR values are compared with data to retrieve the chemical compositions of polluted dust. The difference of polluted dust over the Pacific and Atlantic Ocean provides new evidence about long-range transport of Asian dust to North America. The distribution of dust polluted by black carbon is determined, which can improve knowledge about the effect of black carbon on the earth's radiation budget. JF - American Geophysical Union Fall Meeting AU - Ding, J AU - Yang, P AU - Holz, R AU - Vaughan, M A AU - Hu, Y AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract A11A EP - 0005 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789748760?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Polluted+dust+classification+and+its+optical+properties+analysis+using+CALIPSO+data+and+simulation&rft.au=Ding%2C+J%3BYang%2C+P%3BHolz%2C+R%3BVaughan%2C+M+A%3BHu%2C+Y%3BAnonymous&rft.aulast=Ding&rft.aufirst=J&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-05-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - Kinematic rupture process of the 2015 Gorkha (Nepal) earthquake sequence from joint inversion of teleseismic, hr-GPS, strong-ground motion, InSAR interferograms and pixel offsets AN - 1784735213; 2016-035994 AB - The April 2015 Gorkha, Nepal (Mw 7.8) earthquake ruptured the front of Himalaya thrust belt, causing more than 9,000 fatalities. 17 days after the main event, a large aftershock (Mw 7.2) ruptured to down-dip and east of the main rupture area. To investigate the kinematic rupture process of this earthquake sequence, we explored linear and non-linear inversion techniques using a variety of datasets including teleseismic, high rate and conventional GPS, InSAR interferograms and pixel-offsets. InSAR interferograms from ALOS-2, RADARSAT-2 and Sentinel-1a satellites are used in the joint inversion. The main event is characterized by unilateral rupture extending along strike approximately 70 km to the southeast and 40 km along dip direction. The rupture velocity is well resolved to be lie between 2.8 and 3.0 km/s, which is consistent with back-projection results. An emergent initial phase is observed in teleseismic body wave records, which is consistent with a narrow area of rupture initiation near the hypocenter. The rupture mode of the main event is pulse like. The aftershock ruptured down-dip to the northeast of the main event rupture area. The aftershock rupture area is compact and contained within 40 km of its hypocenter. In contrast to the main event, teleseismic body wave records of the aftershock suggest an abrupt initial phase, which is consistent with a crack like rupture mode. The locations of most of the aftershocks (small and large) surround the rupture area of the main shock with little, if any, spatial overlap. JF - American Geophysical Union Fall Meeting AU - Yue, Han AU - Simons, M AU - Jiang, J AU - Fielding, Eric J AU - Owen, Susan E AU - Moore, Angelyn W AU - Riel, B V AU - Polet, J AU - Duputel, Zacharie AU - Samsonov, Sergey V AU - Avouac, J P AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract S41D EP - 05 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 19:Seismology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1784735213?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Kinematic+rupture+process+of+the+2015+Gorkha+%28Nepal%29+earthquake+sequence+from+joint+inversion+of+teleseismic%2C+hr-GPS%2C+strong-ground+motion%2C+InSAR+interferograms+and+pixel+offsets&rft.au=Yue%2C+Han%3BSimons%2C+M%3BJiang%2C+J%3BFielding%2C+Eric+J%3BOwen%2C+Susan+E%3BMoore%2C+Angelyn+W%3BRiel%2C+B+V%3BPolet%2C+J%3BDuputel%2C+Zacharie%3BSamsonov%2C+Sergey+V%3BAvouac%2C+J+P%3BAnonymous&rft.aulast=Yue&rft.aufirst=Han&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-04-28 N1 - CODEN - #07548 ER - TY - JOUR T1 - Advances in mineral dust source composition measurement with imaging spectroscopy at the Salton Sea, CA AN - 1777473109; 2016-028171 AB - Mineral dust emitted from the Earth's surface is a principal contributor to direct radiative forcing over the arid regions, where shifts in climate have a significant impact on agriculture, precipitation, and desert encroachment around the globe. Dust particles contribute to both positive and negative forcing, depending on the composition of the particles. Particle composition is a function of the surface mineralogy of dust source regions, but poor knowledge of surface mineralogy on regional to global scales limits the skill of Earth System models to predict shifts in regional climate around the globe. Earth System models include the source, emission, transport and deposition phases of the dust cycle. In addition to direct radiative forcing contributions, mineral dust impacts include indirect radiative forcing, modification of the albedo and melting rates of snow and ice, kinetics of tropospheric photochemistry, formation and deposition of acidic aerosols, supply of nutrients to aquatic and terrestrial ecosystems, and impact on human health and safety. We demonstrate the ability to map mineral dust source composition in the Salton Sea dust source region with imaging spectroscopy measurements acquired as part of the NASA HyspIRI preparatory airborne campaign. These new spectroscopically derived compositional measurements provide a six orders of magnitude improvement over current atlases for this dust source region and provide a pathfinder example for a remote measurement approach to address this critical dust composition gap for global Earth System models. JF - American Geophysical Union Fall Meeting AU - Green, Robert O AU - Realmuto, Vincent J AU - Thompson, David Ray AU - Mahowald, Natalie M AU - Garcia-Pando, Carlos Perez AU - Miller, Ron L AU - Clark, Roger Nelson AU - Swayze, Gregg A AU - Okin, Greg S AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract GC22D EP - 07 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 06A:Sedimentary petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777473109?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Advances+in+mineral+dust+source+composition+measurement+with+imaging+spectroscopy+at+the+Salton+Sea%2C+CA&rft.au=Green%2C+Robert+O%3BRealmuto%2C+Vincent+J%3BThompson%2C+David+Ray%3BMahowald%2C+Natalie+M%3BGarcia-Pando%2C+Carlos+Perez%3BMiller%2C+Ron+L%3BClark%2C+Roger+Nelson%3BSwayze%2C+Gregg+A%3BOkin%2C+Greg+S%3BAnonymous&rft.aulast=Green&rft.aufirst=Robert&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-04-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Importance of tetrahedral iron during microbial reduction of clay mineral NAu-2 AN - 1777472712; 2016-028110 AB - Transformations between Fe(II) and Fe(III) in ferruginous clay minerals significantly impact the physicochemical properties of soils and sediments, such as the ion exchange capacity and redox potential. An increasing number of studies have focused on clay minerals that undergo redox changes, however, none have so far addressed Fe isotope fractionation during these processes. In this study, Fe isotope fractionations were determined during microbial reduction of Fe(III) in nontronite NAu-2 with different concentrations of lactate. No secondary Fe-bearing minerals, including Fe oxides, were detected by SEM in over 100 days of incubation, suggesting that the measured fractionations only reflected the net isotope effect associated with the clay minerals. The initial reduction likely started from edge sites, and the reductive dissolution released aqueous Fe(II). Basal plane sorbed Fe(II) was detectable after the extent of Fe reduction exceeded 5% and extensive electron transfer and isotope exchange had occurred between basal plane sorbed Fe(II) and structural Fe(III). With lower concentrations of the lactate(40 mM), the maximum Fe isotope fractionation was larger (Delta 56Fe (sub basal Fe(II)-structure Fe(III)) =-4.37 ppm), consistent with greater adsorption than in systems with more lactate. After the Fe in reactive sites was all reduced, isotope exchange between Fe(II) and structural Fe(III) was inhibited due to blockage of electron transfer pathways by the collapse of the clay layers. The results agree with another study in our group on microbial reduction of NAu-1, despite both the smaller extent of reduction ( approximately 10% vs. 22% max bioreduction for NAu-1 and NAu-2, respectively) and smaller isotope fractionation factor than for NAu-2. We speculate that tetrahedral Fe in NAu-2 may have accelerated the electron transfer between Fe atoms, thus inducing a higher extent of reduction and a larger Fe isotope fractionation compared to NAu-1. JF - American Geophysical Union Fall Meeting AU - Shi, Bingjie AU - Wu, Lingling AU - Liu, Kai AU - Smeaton, Christina Marie AU - Li, Weiqiang AU - Beard, Brian L AU - Johnson, Clark AU - Roden, Eric E AU - Van Cappellen, Philippe AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract B21A EP - 0417 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777472712?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Importance+of+tetrahedral+iron+during+microbial+reduction+of+clay+mineral+NAu-2&rft.au=Shi%2C+Bingjie%3BWu%2C+Lingling%3BLiu%2C+Kai%3BSmeaton%2C+Christina+Marie%3BLi%2C+Weiqiang%3BBeard%2C+Brian+L%3BJohnson%2C+Clark%3BRoden%2C+Eric+E%3BVan+Cappellen%2C+Philippe%3BAnonymous&rft.aulast=Shi&rft.aufirst=Bingjie&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2017-01-19 N1 - CODEN - #07548 ER - TY - NEWS T1 - The "Omics" of Space Travel AN - 1735787773 JF - UPI Space Daily AU - Ferris Molina for NASA Science News Y1 - 2015/11/24/ PY - 2015 DA - 2015 Nov 24 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1735787773?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=The+%22Omics%22+of+Space+Travel&rft.au=Ferris+Molina+for+NASA+Science+News&rft.aulast=Ferris+Molina+for+NASA+Science+News&rft.aufirst=&rft.date=2015-11-24&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-11-24 ER - TY - NEWS T1 - Seven Case Studies in Carbon and Climate AN - 1735555223 JF - UPI Space Daily AU - Carol Rasmussen and Kate Ramsayer for NASA Earth Science News Y1 - 2015/11/24/ PY - 2015 DA - 2015 Nov 24 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1735555223?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=Seven+Case+Studies+in+Carbon+and+Climate&rft.au=Carol+Rasmussen+and+Kate+Ramsayer+for+NASA+Earth+Science+News&rft.aulast=Carol+Rasmussen+and+Kate+Ramsayer+for+NASA+Earth+Science+News&rft.aufirst=&rft.date=2015-11-24&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-11-24 ER - TY - NEWS T1 - Crew Dragon Propulsion System Completes Development Testing AN - 1733872195 JF - UPI Space Daily AU - Steven Siceloff for NASA News Y1 - 2015/11/18/ PY - 2015 DA - 2015 Nov 18 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1733872195?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=Crew+Dragon+Propulsion+System+Completes+Development+Testing&rft.au=Steven+Siceloff+for+NASA+News&rft.aulast=Steven+Siceloff+for+NASA+News&rft.aufirst=&rft.date=2015-11-18&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-11-18 ER - TY - JOUR T1 - Spatial and temporal analysis of a global landslide catalog AN - 1819894573; 2016-079967 AB - Landslide inventories are critical to support investigations of where and when landslides have happened and may occur in the future; however, there is surprisingly little information on the historical occurrence of landslides at the global scale. This paper presents a new publicly available global landslide catalog (GLC), which is based on media reports, online databases, and other sources. This database is currently available at http://ojo-streamer.herokuapp.com/. The 5741 points in the GLC provide a foundation for evaluating spatial and temporal trends in landslide activity from 2007 to 2013. Globally, landslides were reported most frequently from July to September. Most events occurred in Asia, North America and Southeast Asia. In contrast, fewer than 5% of the fatalities were reported in North America, suggesting a significant amount of under-reporting in other regions as well as potential discrepancies between developing and developed regions. Reported landslide events were also compared to satellite-based precipitation estimates from the Tropical Rainfall Measuring Mission (TRMM) to evaluate the co-occurrence of extreme precipitation and landslide activity. Of the 3550 points considered in a subset of the GLC, approximately 60% of the reported landslides have daily precipitation exceeding the 95th percentile of precipitation calculated over a 14-year TRMM record for the same location. This study also investigated how the recurrence interval of extreme precipitation corresponded to some of the most catastrophic landslide events. In spite of several reporting and cataloging biases, spatial and temporal analysis of the GLC suggests that it is a valuable database for characterizing global patterns of landslide occurrence and evaluating relationships with extreme precipitation at regional and global scales. Abstract Copyright (2015) Elsevier, B.V. JF - Geomorphology AU - Kirschbaum, Dalia AU - Stanley, Thomas AU - Zhou, Yaping Y1 - 2015/11/15/ PY - 2015 DA - 2015 Nov 15 SP - 4 EP - 15 PB - Elsevier, Amsterdam VL - 249 SN - 0169-555X, 0169-555X KW - geologic hazards KW - rainfall KW - global KW - data processing KW - statistical distribution KW - spatial distribution KW - landslides KW - Tropical Rainfall Measuring Mission KW - mass movements KW - natural hazards KW - data bases KW - TRMM KW - catalogs KW - temporal distribution KW - remote sensing KW - 20:Applied geophysics KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819894573?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geomorphology&rft.atitle=Spatial+and+temporal+analysis+of+a+global+landslide+catalog&rft.au=Kirschbaum%2C+Dalia%3BStanley%2C+Thomas%3BZhou%2C+Yaping&rft.aulast=Kirschbaum&rft.aufirst=Dalia&rft.date=2015-11-15&rft.volume=249&rft.issue=&rft.spage=4&rft.isbn=&rft.btitle=&rft.title=Geomorphology&rft.issn=0169555X&rft_id=info:doi/10.1016%2Fj.geomorph.2015.03.016 L2 - http://www.sciencedirect.com/science/journal/0169555X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 41 N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2016-09-16 N1 - SubjectsTermNotLitGenreText - catalogs; data bases; data processing; geologic hazards; global; landslides; mass movements; natural hazards; rainfall; remote sensing; spatial distribution; statistical distribution; temporal distribution; TRMM; Tropical Rainfall Measuring Mission DO - http://dx.doi.org/10.1016/j.geomorph.2015.03.016 ER - TY - JOUR T1 - Impact craters; an ice study on Rhea AN - 1765875203; 2016-016129 JF - Icarus AU - Dalle Ore, Cristina M AU - Cruikshank, Dale P AU - Mastrapa, Rachel M E AU - Lewis, Emma AU - White, Oliver L Y1 - 2015/11/15/ PY - 2015 DA - 2015 Nov 15 SP - 80 EP - 90 PB - Elsevier, New York, NY VL - 261 SN - 0019-1035, 0019-1035 KW - water KW - near-infrared spectra KW - icy satellites KW - hyperspectral analysis KW - imagery KW - irradiation KW - impact features KW - Obatala Crater KW - Inktomi Crater KW - amorphous materials KW - atmosphere KW - Rhea Satellite KW - crystallinity KW - temperature KW - Cassini-Huygens Mission KW - melting KW - ice KW - age KW - charged particles KW - impact craters KW - spectra KW - satellites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765875203?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Impact+craters%3B+an+ice+study+on+Rhea&rft.au=Dalle+Ore%2C+Cristina+M%3BCruikshank%2C+Dale+P%3BMastrapa%2C+Rachel+M+E%3BLewis%2C+Emma%3BWhite%2C+Oliver+L&rft.aulast=Dalle+Ore&rft.aufirst=Cristina&rft.date=2015-11-15&rft.volume=261&rft.issue=&rft.spage=80&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.08.008 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 41 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2016-02-18 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - age; amorphous materials; atmosphere; Cassini-Huygens Mission; charged particles; crystallinity; hyperspectral analysis; ice; icy satellites; imagery; impact craters; impact features; Inktomi Crater; irradiation; melting; near-infrared spectra; Obatala Crater; Rhea Satellite; satellites; spectra; temperature; water DO - http://dx.doi.org/10.1016/j.icarus.2015.08.008 ER - TY - JOUR T1 - Modeling the effects of Martian surface frost on ice table depth AN - 1765875015; 2016-016127 JF - Icarus AU - Williams, K E AU - McKay, Christopher P AU - Heldmann, J L Y1 - 2015/11/15/ PY - 2015 DA - 2015 Nov 15 SP - 58 EP - 65 PB - Elsevier, New York, NY VL - 261 SN - 0019-1035, 0019-1035 KW - soils KW - surface properties KW - general circulation models KW - frost KW - atmosphere KW - Viking Program KW - Mars KW - depth KW - terrestrial planets KW - models KW - planets KW - ice KW - ice table KW - ground-surface temperature KW - ground ice KW - seasonal variations KW - latitude KW - climate KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765875015?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Modeling+the+effects+of+Martian+surface+frost+on+ice+table+depth&rft.au=Williams%2C+K+E%3BMcKay%2C+Christopher+P%3BHeldmann%2C+J+L&rft.aulast=Williams&rft.aufirst=K&rft.date=2015-11-15&rft.volume=261&rft.issue=&rft.spage=58&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.08.005 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 51 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2016-02-18 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - atmosphere; climate; depth; frost; general circulation models; ground ice; ground-surface temperature; ice; ice table; latitude; Mars; models; planets; seasonal variations; soils; surface properties; terrestrial planets; Viking Program DO - http://dx.doi.org/10.1016/j.icarus.2015.08.005 ER - TY - JOUR T1 - Widespread occurrence of (per)chlorate in the solar system AN - 1739081510; 2015-115220 AB - Perchlorate (ClO (super -) (sub 4) ) and chlorate (ClO (super -) (sub 3) ) are ubiquitous on Earth and ClO (super -) (sub 4) has also been found on Mars. These species can play important roles in geochemical processes such as oxidation of organic matter and as biological electron acceptors, and are also indicators of important photochemical reactions involving oxyanions; on Mars they could be relevant for human habitability both in terms of in situ resource utilization and potential human health effects. For the first time, we extracted, detected and quantified ClO (super -) (sub 4) and ClO (super -) (sub 3) in extraterrestrial, non-planetary samples: regolith and rock samples from the Moon, and two chondrite meteorites (Murchison and Fayetteville). Lunar samples were collected by astronauts during the Apollo program, and meteorite samples were recovered immediately after their fall. This fact, together with the heterogeneous distribution of ClO (super -) (sub 4) and ClO (super -) (sub 3) within some of the samples, and their relative abundance with respect to other soluble species (e.g., NO (super -) (sub 3) ) are consistent with an extraterrestrial origin of the oxychlorine species. Our results, combined with the previously reported widespread occurrence on Earth and Mars, indicate that ClO (super -) (sub 4) and ClO (super -) (sub 3) could be present throughout the Solar System. Abstract Copyright (2015) Elsevier, B.V. JF - Earth and Planetary Science Letters AU - Jackson, W Andrew AU - Davila, Alfonso F AU - Sears, Derek W G AU - Coates, John D AU - McKay, Christopher P AU - Brundrett, Maeghan AU - Estrada, Nubia AU - Boehlke, J K Y1 - 2015/11/15/ PY - 2015 DA - 2015 Nov 15 SP - 470 EP - 476 PB - Elsevier, Amsterdam VL - 430 SN - 0012-821X, 0012-821X KW - ordinary chondrites KW - stony meteorites KW - halogens KW - mass spectra KW - Fayetteville Meteorite KW - Mars KW - Apollo Program KW - Murchison Meteorite KW - meteorites KW - chloride ion KW - spectra KW - Sample 66041 KW - nitrate ion KW - chondrites KW - chlorine KW - sulfate ion KW - Moon KW - chlorate ion KW - photochemistry KW - H chondrites KW - carbonaceous chondrites KW - perchlorate KW - terrestrial planets KW - planets KW - lunar samples KW - Sample 66095 KW - CM chondrites KW - regolith KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1739081510?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Earth+and+Planetary+Science+Letters&rft.atitle=Widespread+occurrence+of+%28per%29chlorate+in+the+solar+system&rft.au=Jackson%2C+W+Andrew%3BDavila%2C+Alfonso+F%3BSears%2C+Derek+W+G%3BCoates%2C+John+D%3BMcKay%2C+Christopher+P%3BBrundrett%2C+Maeghan%3BEstrada%2C+Nubia%3BBoehlke%2C+J+K&rft.aulast=Jackson&rft.aufirst=W&rft.date=2015-11-15&rft.volume=430&rft.issue=&rft.spage=470&rft.isbn=&rft.btitle=&rft.title=Earth+and+Planetary+Science+Letters&rft.issn=0012821X&rft_id=info:doi/10.1016%2Fj.epsl.2015.09.003 L2 - http://www.sciencedirect.com/science/journal/0012821X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2015-01-01 N1 - Number of references - 47 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2015-12-04 N1 - CODEN - EPSLA2 N1 - SubjectsTermNotLitGenreText - Apollo Program; carbonaceous chondrites; chlorate ion; chloride ion; chlorine; chondrites; CM chondrites; Fayetteville Meteorite; H chondrites; halogens; lunar samples; Mars; mass spectra; meteorites; Moon; Murchison Meteorite; nitrate ion; ordinary chondrites; perchlorate; photochemistry; planets; regolith; Sample 66041; Sample 66095; spectra; stony meteorites; sulfate ion; terrestrial planets DO - http://dx.doi.org/10.1016/j.epsl.2015.09.003 ER - TY - JOUR T1 - Evidence for primordial water in Earth's deep mantle AN - 1765870557; 2016-014730 AB - The hydrogen-isotope [deuterium/hydrogen (D/H)] ratio of Earth can be used to constrain the origin of its water. However, the most accessible reservoir, Earth's oceans, may no longer represent the original (primordial) D/H ratio, owing to changes caused by water cycling between the surface and the interior. Thus, a reservoir completely isolated from surface processes is required to define Earth's original D/H signature. Here we present data for Baffin Island and Icelandic lavas, which suggest that the deep mantle has a low D/H ratio (delta D more negative than -218 per mil). Such strongly negative values indicate the existence of a component within Earth's interior that inherited its D/H ratio directly from the protosolar nebula. JF - Science AU - Hallis, Lydia J AU - Huss, Gary R AU - Nagashima, Kazuhide AU - Taylor, G Jeffrey AU - Halldorsson, Saemundur A AU - Hilton, David R AU - Mottl, Michael J AU - Meech, Karen J Y1 - 2015/11/13/ PY - 2015 DA - 2015 Nov 13 SP - 795 EP - 797 PB - American Association for the Advancement of Science, Washington, DC VL - 350 IS - 6262 SN - 0036-8075, 0036-8075 KW - interior KW - primordial water KW - volcanic rocks KW - isotopes KW - igneous rocks KW - mantle KW - Europe KW - stable isotopes KW - melt inclusions KW - lower mantle KW - sampling KW - noble gases KW - Nunavut KW - inclusions KW - basalts KW - Baffin Island KW - helium KW - geochemistry KW - water KW - Western Europe KW - isotope ratios KW - solar nebula KW - Canada KW - D/H KW - hydrogen KW - mid-ocean ridge basalts KW - fluid inclusions KW - He-4/He-3 KW - Iceland KW - Eastern Canada KW - ocean-island basalts KW - crust KW - 18:Solid-earth geophysics KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765870557?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science&rft.atitle=Evidence+for+primordial+water+in+Earth%27s+deep+mantle&rft.au=Hallis%2C+Lydia+J%3BHuss%2C+Gary+R%3BNagashima%2C+Kazuhide%3BTaylor%2C+G+Jeffrey%3BHalldorsson%2C+Saemundur+A%3BHilton%2C+David+R%3BMottl%2C+Michael+J%3BMeech%2C+Karen+J&rft.aulast=Hallis&rft.aufirst=Lydia&rft.date=2015-11-13&rft.volume=350&rft.issue=6262&rft.spage=795&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.aac4834 L2 - http://www.sciencemag.org/magazine LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 41 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2016-02-18 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - Baffin Island; basalts; Canada; crust; D/H; Eastern Canada; Europe; fluid inclusions; geochemistry; He-4/He-3; helium; hydrogen; Iceland; igneous rocks; inclusions; interior; isotope ratios; isotopes; lower mantle; mantle; melt inclusions; mid-ocean ridge basalts; noble gases; Nunavut; ocean-island basalts; primordial water; sampling; solar nebula; stable isotopes; volcanic rocks; water; Western Europe DO - http://dx.doi.org/10.1126/science.aac4834 ER - TY - NEWS T1 - NASA Armstrong Hosts Convergent Aeronautics Solutions Showcase AN - 1732169059 JF - UPI Space Daily AU - Peter Merlin for AFRC News - NASA Armstrong Flight Research Center Y1 - 2015/11/10/ PY - 2015 DA - 2015 Nov 10 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1732169059?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=NASA+Armstrong+Hosts+Convergent+Aeronautics+Solutions+Showcase&rft.au=Peter+Merlin+for+AFRC+News+-+NASA+Armstrong+Flight+Research+Center&rft.aulast=Peter+Merlin+for+AFRC+News+-+NASA+Armstrong+Flight+Research+Center&rft.aufirst=&rft.date=2015-11-10&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-11-10 ER - TY - JOUR T1 - EVOLVING METADATA IN NASA EARTH SCIENCE DATA SYSTEMS WITH THE COMMON METADATA REPOSITORY (CMR) AND UNIFIED METADATA MODEL (UMM) AN - 1762356540; PQ0002506022 AB - NASA's Earth Observing System (EOS) is a coordinated series of satellites for long term global observations. NASA's Earth Observing System Data and Information System (EOSDIS) is a multi-petabyte-scale archive of environmental data that supports global climate change research by providing end-to-end services from EOS instrument data collection to science data processing to full access to EOS and other earth science data. Meta-data is used in all aspects of NASA's Earth Science data life-cycle from the initial measurement gathering to the accessing of data products by end-user. Missions use meta-data in their science data products when describing information such as the instrument/sensor, operational plan, and geographic region. Acting as the curator of the data products, data centers employ meta-data for preservation, access and manipulation of data. A common meta-data standard across NASA's Earth Science data systems promotes interoperability, enhances data utilization and removes levels of uncertainty found in data products. JF - EUMETSAT Meteorological Satellite Conference AU - Mitchell, Andrew AU - Pilone, Daniel AD - NASA Goddard Space Flight Center Y1 - 2015/11/05/ PY - 2015 DA - 2015 Nov 05 SP - 34 PB - EUMETSAT, Am Kavalleriesand 31 Darmstadt D-64295 Germany SN - 1011-3932, 1011-3932 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts KW - Remote Sensing KW - Information Systems KW - Sensors KW - Climate change KW - Scientific satellites KW - Data Collections KW - Modelling KW - Satellite Technology KW - Data processing KW - Data collections KW - Model Studies KW - Data Processing KW - Standards KW - Information systems KW - AQ 00001:Water Resources and Supplies KW - SW 5040:Data acquisition KW - Q2 09393:Remote geosensing UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1762356540?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=EUMETSAT+Meteorological+Satellite+Conference&rft.atitle=EVOLVING+METADATA+IN+NASA+EARTH+SCIENCE+DATA+SYSTEMS+WITH+THE+COMMON+METADATA+REPOSITORY+%28CMR%29+AND+UNIFIED+METADATA+MODEL+%28UMM%29&rft.au=Mitchell%2C+Andrew%3BPilone%2C+Daniel&rft.aulast=Mitchell&rft.aufirst=Andrew&rft.date=2015-11-05&rft.volume=&rft.issue=&rft.spage=34&rft.isbn=&rft.btitle=&rft.title=EUMETSAT+Meteorological+Satellite+Conference&rft.issn=10113932&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-02-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Data processing; Sensors; Climate change; Data collections; Scientific satellites; Modelling; Information systems; Remote Sensing; Information Systems; Satellite Technology; Data Processing; Standards; Model Studies; Data Collections ER - TY - JOUR T1 - NASA'S EARTH SCIENCE DATA STEWARDSHIP ACTIVITIES AN - 1762356166; PQ0002506011 AB - NASA has been collecting Earth observation data for over 40 years using instruments on board satellites, aircraft and ground-based systems. With the inception of the Earth Observing System (EOS) Program in 1990, NASA established the Earth Science Data and Information System (ESDIS) Project and initiated development of the Earth Observing System Data and Information System (EOSDIS). A set of Distributed Active Archive Centers (DAACs) was established, distributed across the United States. The data stewardship responsibilities include ensuring that the data and information content are reliable, of high quality, easily accessible, and usable for as long as they are considered to be of value. To meet these responsibilities, the ESDIS Project is involved with the data producing missions or projects throughout their lifecycles. NASA is taking active roles in the Data Stewardship Committee of the US Federation of Earth Science Information Partners and in the Data Stewardship Interest Group of the Committee on Earth Observing Satellites (CEOS) Working Group on Information Systems and Services (WGISS) to exchange ideas and help evolve best practices in stewardship. JF - EUMETSAT Meteorological Satellite Conference AU - Ramapriyan, Hampapuram AU - Lowe, Dawn AU - Murphy, Kevin AD - Science Systems and Applications, Inc. & NASA Goddard Space Flight Center Y1 - 2015/11/05/ PY - 2015 DA - 2015 Nov 05 SP - 5 PB - EUMETSAT, Am Kavalleriesand 31 Darmstadt D-64295 Germany SN - 1011-3932, 1011-3932 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts KW - Remote Sensing KW - Satellite Technology KW - Information Systems KW - Scientific satellites KW - USA KW - Aircraft KW - Archives KW - Information systems KW - AQ 00001:Water Resources and Supplies KW - SW 5010:Network design KW - Q2 09393:Remote geosensing UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1762356166?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=EUMETSAT+Meteorological+Satellite+Conference&rft.atitle=NASA%27S+EARTH+SCIENCE+DATA+STEWARDSHIP+ACTIVITIES&rft.au=Ramapriyan%2C+Hampapuram%3BLowe%2C+Dawn%3BMurphy%2C+Kevin&rft.aulast=Ramapriyan&rft.aufirst=Hampapuram&rft.date=2015-11-05&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-02-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Archives; Scientific satellites; Information systems; Remote Sensing; Information Systems; Satellite Technology; Aircraft; USA ER - TY - JOUR T1 - First results of the MAVEN magnetic field investigation AN - 1808379544; PQ0002797219 AB - Two Mars Atmosphere and Volatile EvolutioN magnetic field sensors sample the ambient magnetic field at the outer edge of each solar array. We characterized relatively minor spacecraft-generated magnetic fields using in-flight subsystem tests and spacecraft maneuvers. Dynamic spacecraft fields associated with the power subsystem ( less than or equal to 1nT) are compensated for using spacecraft engineering telemetry to identify active solar array circuits and monitor their electrical current production. Static spacecraft magnetic fields are monitored using spacecraft roll maneuvers. Accuracy of measurement of the environmental magnetic field is demonstrated by comparison with field directions deduced from the symmetry properties of the electron distribution function measured by the Solar Wind Electron Analyzer. We map the bow shock, magnetic pileup boundary, the VB convection electric field and ubiquitous proton cyclotron, and 1Hz waves in the ion foreshock region. Key Points * We observe, analyze, model, and mitigate spacecraft-generated magnetic fields * Measured field vectors are independently validated using electron analyzer observations * We map the Mars magnetosphere, convection electric field, foreshock waves, and magnetotail JF - Geophysical Research Letters AU - Connerney, JEP AU - Espley, J R AU - DiBraccio, G A AU - Gruesbeck, J R AU - Oliversen, R J AU - Mitchell, D L AU - Halekas, J AU - Mazelle, C AU - Brain, D AU - Jakosky, B M AD - NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2015/11// PY - 2015 DA - November 2015 SP - 8819 EP - 8827 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 42 IS - 21 SN - 0094-8276, 0094-8276 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Convection KW - Sensors KW - Vectors KW - Electric Fields KW - Field Tests KW - Wind fields KW - Magnetic fields KW - Engineering KW - Electric fields KW - Telemetry KW - Boundaries KW - Waves KW - Evolution KW - Wind KW - Modelling KW - SW 0810:General KW - Q2 09182:Methods and instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808379544?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=First+results+of+the+MAVEN+magnetic+field+investigation&rft.au=Connerney%2C+JEP%3BEspley%2C+J+R%3BDiBraccio%2C+G+A%3BGruesbeck%2C+J+R%3BOliversen%2C+R+J%3BMitchell%2C+D+L%3BHalekas%2C+J%3BMazelle%2C+C%3BBrain%2C+D%3BJakosky%2C+B+M&rft.aulast=Connerney&rft.aufirst=JEP&rft.date=2015-11-01&rft.volume=42&rft.issue=21&rft.spage=8819&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL065366 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-08-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Convection; Magnetic fields; Sensors; Telemetry; Electric fields; Vectors; Wind fields; Modelling; Engineering; Boundaries; Waves; Field Tests; Electric Fields; Wind; Evolution DO - http://dx.doi.org/10.1002/2015GL065366 ER - TY - JOUR T1 - Sensitivity of simulated Martian atmospheric temperature to prescribed dust opacity distribution; comparison of model results with reconstructed data from Mars Exploration Rover missions AN - 1800396319; 2016-055712 AB - We use the Mars Weather Research and Forecasting (MarsWRF) general circulation model to simulate the atmospheric structure corresponding to the landing location and time of the Mars Exploration Rovers (MER) Spirit (A) and Opportunity (B) in 2004. The multiscale capability of MarsWRF facilitates high-resolution nested model runs centered near the landing site of each of the rovers. Dust opacity distributions based on measurements by Thermal Emission Spectrometer (TES) aboard the Mars Global Surveyor spacecraft, and those from an old version of the Mars Climate Database (MCD v3.1 released in 2001) are used to study the sensitivity of the model temperature profile to variations in the dust prescription. The reconstructed entry, descent, and landing (EDL) data from the rover missions are used for comparisons. We show that the model using dust opacity from TES limb and nadir data for the year of MER EDL, Mars Year 26 (MY26), yields temperature profiles in closer agreement with the reconstructed data than the prelaunch EDL simulations and models using other dust opacity specifications. The temperature at 100 Pa from the model (MY26) and the reconstruction are within 5 degrees K. These results highlight the role of vertical dust opacity distribution in determining the atmospheric thermal structure. Similar studies involving data from past missions and models will be useful in understanding the extent to which atmospheric variability is captured by the models and in developing realistic preflight characterization required for future lander missions to Mars. Abstract Copyright (2015), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Natarajan, Murali AU - Dwyer Cianciolo, Alicia AU - Fairlie, T Duncan AU - Richardson, Mark I AU - McConnochie, Timothy H Y1 - 2015/11// PY - 2015 DA - November 2015 SP - 2002 EP - 2019 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 120 IS - 11 SN - 2169-9097, 2169-9097 KW - general circulation models KW - Spirit Rover KW - Opportunity Rover KW - clastic sediments KW - data processing KW - atmosphere KW - Mars KW - landing sites KW - distribution KW - temperature KW - terrestrial planets KW - Mars Exploration Rover KW - planets KW - dust KW - sediments KW - Mars Global Surveyor Program KW - data bases KW - thermal emission KW - climate KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800396319?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Planets&rft.atitle=Sensitivity+of+simulated+Martian+atmospheric+temperature+to+prescribed+dust+opacity+distribution%3B+comparison+of+model+results+with+reconstructed+data+from+Mars+Exploration+Rover+missions&rft.au=Natarajan%2C+Murali%3BDwyer+Cianciolo%2C+Alicia%3BFairlie%2C+T+Duncan%3BRichardson%2C+Mark+I%3BMcConnochie%2C+Timothy+H&rft.aulast=Natarajan&rft.aufirst=Murali&rft.date=2015-11-01&rft.volume=120&rft.issue=11&rft.spage=2002&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2F2015JE004813 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9100 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 38 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2016-06-30 N1 - SubjectsTermNotLitGenreText - atmosphere; clastic sediments; climate; data bases; data processing; distribution; dust; general circulation models; landing sites; Mars; Mars Exploration Rover; Mars Global Surveyor Program; Opportunity Rover; planets; sediments; Spirit Rover; temperature; terrestrial planets; thermal emission DO - http://dx.doi.org/10.1002/2015JE004813 ER - TY - JOUR T1 - Quantitative compositional analysis of sedimentary materials using thermal emission spectroscopy; 1, Application to sedimentary rocks AN - 1800396139; 2016-055710 AB - Thermal emission spectroscopy is used to determine the mineralogy of sandstone and mudstone rocks as part of an investigation of linear spectral mixing between sedimentary constituent phases. With widespread occurrences of sedimentary rocks on the surface of Mars, critical examination of the accuracy associated with quantitative models of mineral abundances derived from thermal emission spectra of sedimentary materials is necessary. Although thermal emission spectroscopy has been previously proven to be a viable technique to obtain quantitative mineralogy from igneous and metamorphic materials, sedimentary rocks, with natural variation of composition, compaction, and grain size, have yet to be examined. In this work, we present an analysis of the thermal emission spectral ( approximately 270-1650 cm (super -1) ) characteristics of a suite of 13 sandstones and 14 mudstones. X-ray diffraction and traditional point counting procedures were all evaluated in comparison with thermal emission spectroscopy. Results from this work are consistent with previous thermal emission spectroscopy studies and indicate that bulk rock mineral abundances can be estimated within 11.2% for detrital grains (i.e., quartz and feldspars) and 14.8% for all other mineral phases present in both sandstones and mudstones, in comparison to common in situ techniques used for determining bulk rock composition. Clay-sized to fine silt-sized grained phase identification is less accurate, with differences from the known ranging from approximately 5 to 24% on average. Nevertheless, linear least squares modeling of thermal emission spectra is an advantageous technique for determining abundances of detrital grains and sedimentary matrix and for providing a rapid classification of clastic rocks. Abstract Copyright (2015), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Thorpe, Michael T AU - Rogers, A Deanne AU - Bristow, Thomas F AU - Pan, Cong Y1 - 2015/11// PY - 2015 DA - November 2015 SP - 1956 EP - 1983 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 120 IS - 11 SN - 2169-9097, 2169-9097 KW - silicates KW - mudstone KW - X-ray diffraction data KW - silica minerals KW - grain size KW - sandstone KW - Mars KW - terrestrial planets KW - planets KW - sedimentary rocks KW - mineral composition KW - quantitative analysis KW - fine-grained materials KW - thermal emission KW - quartz KW - framework silicates KW - applications KW - spectroscopy KW - feldspar group KW - clastic rocks KW - 06A:Sedimentary petrology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800396139?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Planets&rft.atitle=Quantitative+compositional+analysis+of+sedimentary+materials+using+thermal+emission+spectroscopy%3B+1%2C+Application+to+sedimentary+rocks&rft.au=Thorpe%2C+Michael+T%3BRogers%2C+A+Deanne%3BBristow%2C+Thomas+F%3BPan%2C+Cong&rft.aulast=Thorpe&rft.aufirst=Shital&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9100 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 84 N1 - PubXState - DC N1 - Document feature - illus. incl. 7 tables N1 - Last updated - 2016-06-30 N1 - SubjectsTermNotLitGenreText - applications; clastic rocks; feldspar group; fine-grained materials; framework silicates; grain size; Mars; mineral composition; mudstone; planets; quantitative analysis; quartz; sandstone; sedimentary rocks; silica minerals; silicates; spectroscopy; terrestrial planets; thermal emission; X-ray diffraction data DO - http://dx.doi.org/10.1002/2015JE004863 ER - TY - JOUR T1 - Surface evolution of salt-encrusted playas under extreme and continued dryness AN - 1793208164; 2016-048854 AB - Miocene continental saltpans are scattered in the Central Valley of the Atacama Desert, one of the driest regions on Earth. These evaporitic deposits are hydrologically inactive, and are detached from groundwater brines or aquifers. The surface of the saltpans, also known as salars, comprises desiccation polygons, commonly with nodular salt structures along their sides. The morphology and bulk mineralogy of salt polygons differs between and within salars, and the shape and internal structure of salt nodules varies between different polygon types. Based on field observation, and mineralogy and crystallography data, we generated a conceptual model for the genesis and evolution of these surface features, whereby rare rainfall events are responsible for the transformation of desiccation salt polygons and the initial formation of salt nodules along polygon borders. In addition, frequent, but less intense, deliquescence events further drive the evolution of salt nodules, resulting in a characteristic internal structure that includes laminations, and changes in porosity and crystal morphologies. As a result, and despite the extreme dryness, the surfaces of fossil salars are dynamic on timescales of several years to decades, in response to daily cycles in atmospheric moisture, and also to rare and meager rainfall events. We propose that fossil salars in the Atacama Desert represent an end stage in the evolution of evaporitic deposits under extreme and prolonged dryness. Copyright Copyright 2015 John Wiley & Sons, Ltd. JF - Earth Surface Processes and Landforms AU - Artieda, Octavio AU - Davila, Alfonso AU - Wierzchos, Jacek AU - Buhler, Peter AU - Rodriguez-Ochoa, Rafael AU - Pueyo, Juan AU - Ascaso, Carmen Y1 - 2015/11// PY - 2015 DA - November 2015 SP - 1939 EP - 1950 PB - Wiley, Chichester VL - 40 IS - 14 SN - 0197-9337, 0197-9337 KW - halides KW - terrestrial environment KW - X-ray diffraction data KW - moisture KW - playas KW - atmospheric precipitation KW - Chile KW - sedimentary rocks KW - mineral composition KW - Atacama Desert KW - salars KW - chlorides KW - sedimentary structures KW - hydrology KW - landform evolution KW - electron microscopy data KW - properties KW - mineralogy KW - halite KW - desiccation KW - efflorescence KW - microscope methods KW - petrography KW - SEM data KW - salt KW - field studies KW - saltpans KW - secondary structures KW - thin sections KW - controls KW - deliquescence KW - sampling KW - fabric KW - polygons KW - encrustations KW - chemically precipitated rocks KW - rainfall KW - arid environment KW - structural analysis KW - morphometry KW - evaporites KW - genesis KW - concretions KW - South America KW - polished sections KW - geomorphology KW - transformations KW - crystallography KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1793208164?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Earth+Surface+Processes+and+Landforms&rft.atitle=Surface+evolution+of+salt-encrusted+playas+under+extreme+and+continued+dryness&rft.au=Artieda%2C+Octavio%3BDavila%2C+Alfonso%3BWierzchos%2C+Jacek%3BBuhler%2C+Peter%3BRodriguez-Ochoa%2C+Rafael%3BPueyo%2C+Juan%3BAscaso%2C+Carmen&rft.aulast=Artieda&rft.aufirst=Octavio&rft.date=2015-11-01&rft.volume=40&rft.issue=14&rft.spage=1939&rft.isbn=&rft.btitle=&rft.title=Earth+Surface+Processes+and+Landforms&rft.issn=01979337&rft_id=info:doi/10.1002%2Fesp.3771 L2 - http://www3.interscience.wiley.com/journal/117935722/grouphome/home.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 44 N1 - Document feature - illus. incl. 2 tables, sketch map N1 - Last updated - 2016-06-02 N1 - CODEN - ESPRDT N1 - SubjectsTermNotLitGenreText - arid environment; Atacama Desert; atmospheric precipitation; chemically precipitated rocks; Chile; chlorides; concretions; controls; crystallography; deliquescence; desiccation; efflorescence; electron microscopy data; encrustations; evaporites; fabric; field studies; genesis; geomorphology; halides; halite; hydrology; landform evolution; microscope methods; mineral composition; mineralogy; moisture; morphometry; petrography; playas; polished sections; polygons; properties; rainfall; salars; salt; saltpans; sampling; secondary structures; sedimentary rocks; sedimentary structures; SEM data; South America; structural analysis; terrestrial environment; thin sections; transformations; X-ray diffraction data DO - http://dx.doi.org/10.1002/esp.3771 ER - TY - JOUR T1 - Reduction of Nonuniform Beamfilling Effects by Multiple Constraints: A Simulation Study AN - 1790970610; PQ0003081059 AB - A spaceborne precipitation radar samples the vertical structure of precipitating hydrometeors from the top down. The viewing geometry and operating frequency result in certain limitations and opportunities. Among the limitations is attenuation of the radar signal that can cause the measured radar reflectivity factor to be substantially less than the desired quantity, the true radar reflectivity factor. Another error source is the spatial variability in precipitation rates that occurs at scales smaller than the sensor field of view (FOV), giving rise to the nonuniform beamfilling (NUBF) effect. The opportunities arise when the radar return from the surface can be used to obtain constraints on the path-integrated attenuation (PIA) for use in hybrid attenuation correction algorithms. The surface return can also provide some information on the degree of NUBF at off-nadir viewing angles. In this paper ground-based radar data are used to simulate spaceborne radar data at nadir and off-nadir viewing angles at Ku band and Ka band and to test attenuation correction algorithms in the presence of nonuniform beamfilling. The cross-FOV gradient in PIA is found to be an important characteristic for describing the performance of attenuation correction algorithms. JF - Journal of Atmospheric and Oceanic Technology AU - Short, David A AU - Meneghini, Robert AU - Emory, Amber E AU - Schwaller, Mathew R AD - Science Systems and Applications, Inc., Lanham, and NASA GSFC, Greenbelt, Maryland Y1 - 2015/11// PY - 2015 DA - November 2015 SP - 2114 EP - 2124 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 32 IS - 11 SN - 0739-0572, 0739-0572 KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Testing Procedures KW - Atmospheric precipitations KW - Marine KW - Variability KW - Reflectance KW - Sensors KW - Algorithms KW - Precipitation KW - Errors KW - Vertical profiles KW - Spatial variations KW - Radar observation of hydrometeors KW - Radar reflectivity KW - Numerical simulations KW - Hydrometeors KW - Radar KW - Spatial variability KW - Precipitation Rate KW - O 5080:Legal/Governmental KW - SW 0810:General KW - M2 551.577:General Precipitation (551.577) KW - Q2 09126:Sociology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1790970610?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Atmospheric+and+Oceanic+Technology&rft.atitle=Reduction+of+Nonuniform+Beamfilling+Effects+by+Multiple+Constraints%3A+A+Simulation+Study&rft.au=Short%2C+David+A%3BMeneghini%2C+Robert%3BEmory%2C+Amber+E%3BSchwaller%2C+Mathew+R&rft.aulast=Short&rft.aufirst=David&rft.date=2015-11-01&rft.volume=32&rft.issue=11&rft.spage=2114&rft.isbn=&rft.btitle=&rft.title=Journal+of+Atmospheric+and+Oceanic+Technology&rft.issn=07390572&rft_id=info:doi/10.1175%2FJTECH-D-15-0021.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Number of references - 15 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Spatial variations; Atmospheric precipitations; Reflectance; Sensors; Hydrometeors; Radar; Vertical profiles; Radar observation of hydrometeors; Numerical simulations; Radar reflectivity; Algorithms; Precipitation; Spatial variability; Testing Procedures; Variability; Errors; Precipitation Rate; Marine DO - http://dx.doi.org/10.1175/JTECH-D-15-0021.1 ER - TY - JOUR T1 - The Observed State of the Water Cycle in the Early Twenty-First Century AN - 1790968267; PQ0003081078 AB - This study quantifies mean annual and monthly fluxes of Earth's water cycle over continents and ocean basins during the first decade of the millennium. To the extent possible, the flux estimates are based on satellite measurements first and data-integrating models second. A careful accounting of uncertainty in the estimates is included. It is applied within a routine that enforces multiple water and energy budget constraints simultaneously in a variational framework in order to produce objectively determined optimized flux estimates. In the majority of cases, the observed annual surface and atmospheric water budgets over the continents and oceans close with much less than 10% residual. Observed residuals and optimized uncertainty estimates are considerably larger for monthly surface and atmospheric water budget closure, often nearing or exceeding 20% in North America, Eurasia, Australia and neighboring islands, and the Arctic and South Atlantic Oceans. The residuals in South America and Africa tend to be smaller, possibly because cold land processes are negligible. Fluxes were poorly observed over the Arctic Ocean, certain seas, Antarctica, and the Australasian and Indonesian islands, leading to reliance on atmospheric analysis estimates. Many of the satellite systems that contributed data have been or will soon be lost or replaced. Models that integrate ground-based and remote observations will be critical for ameliorating gaps and discontinuities in the data records caused by these transitions. Continued development of such models is essential for maximizing the value of the observations. Next-generation observing systems are the best hope for significantly improving global water budget accounting. JF - Journal of Climate AU - Rodell, M AU - Beaudoing, H K AU - L'Ecuyer, T S AU - Olson, W S AU - Famiglietti, J S AU - Houser, PR AU - Adler, R AU - Bosilovich, M G AU - Clayson, CA AU - Chambers, D AD - NASA Goddard Space Flight Center, Greenbelt, Maryland Y1 - 2015/11// PY - 2015 DA - November 2015 SP - 8289 EP - 8318 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 28 IS - 21 SN - 0894-8755, 0894-8755 KW - Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Physical Meteorology and Climatology KW - Water budget KW - Observational techniques and algorithms KW - Remote sensing KW - Mathematical and statistical techniques KW - Numerical analysis/modeling KW - Atmospheric Water KW - Remote Sensing KW - Meteorological data KW - Hydrologic Cycle KW - ISEW, Australia, Northern Terr. KW - Ocean-atmosphere system KW - Arctic Ocean KW - Ocean basins KW - Arctic KW - Modelling KW - Marine KW - North America KW - PN, Arctic Ocean KW - Satellite Technology KW - Climate models KW - Climates KW - Brackish KW - AS, South Atlantic KW - PNE, Eurasia KW - Hydrologic cycle KW - Energy budget KW - Model Studies KW - PS, Antarctica KW - ASW, South America KW - Water cycle KW - Oceans KW - Africa KW - Fluctuations KW - Water budget of oceans KW - AQ 00001:Water Resources and Supplies KW - SW 0810:General KW - M2 551.58:Climatology (551.58) KW - Q2 09244:Air-sea coupling UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1790968267?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Climate&rft.atitle=The+Observed+State+of+the+Water+Cycle+in+the+Early+Twenty-First+Century&rft.au=Rodell%2C+M%3BBeaudoing%2C+H+K%3BL%27Ecuyer%2C+T+S%3BOlson%2C+W+S%3BFamiglietti%2C+J+S%3BHouser%2C+PR%3BAdler%2C+R%3BBosilovich%2C+M+G%3BClayson%2C+CA%3BChambers%2C+D&rft.aulast=Rodell&rft.aufirst=M&rft.date=2015-11-01&rft.volume=28&rft.issue=21&rft.spage=8289&rft.isbn=&rft.btitle=&rft.title=Journal+of+Climate&rft.issn=08948755&rft_id=info:doi/10.1175%2FJCLI-D-14-00555.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Number of references - 157 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Water budget; Ocean-atmosphere system; Ocean basins; Hydrologic cycle; Energy budget; Modelling; Meteorological data; Climate models; Water cycle; Arctic Ocean; Water budget of oceans; Remote Sensing; Atmospheric Water; Satellite Technology; Hydrologic Cycle; Oceans; Climates; Arctic; Fluctuations; Model Studies; PS, Antarctica; PN, Arctic Ocean; North America; ASW, South America; ISEW, Australia, Northern Terr.; Africa; AS, South Atlantic; PNE, Eurasia; Marine; Brackish DO - http://dx.doi.org/10.1175/JCLI-D-14-00555.1 ER - TY - JOUR T1 - Sensitivity of simulated tropospheric CO to subgrid physics parameterization: A case study of Indonesian biomass burning emissions in 2006 AN - 1776672986; PQ0002801907 AB - Recent cumulus and turbulence parameterization changes to the NASA GISS ModelE2 have improved representation of the Madden-Julian Oscillation and low cloud distribution, but their effect on composition-related quantities is not known. In this study, we simulate the vertical transport of carbon monoxide (CO) from uncontrolled biomass burning in Indonesia in late 2006, during which uniquely high CO was detected in the upper troposphere. Two configurations of ModelE2, one without the changes (AR5) and one with the changes (AR5'), are used for an ensemble simulation of the transport of CO from the biomass burning. The simulation results are evaluated against new CO profiles retrieved jointly from the Aura Tropospheric Emission Spectrometer and the Microwave Limb Sounder. Modeled upper tropospheric CO using the AR5 physics was unrealistically high. The AR5' physics suppress deep convection that reaches near the tropopause, reducing vertical transport of CO to the upper troposphere and bringing the model into better agreement with satellite CO. In this regard, the most important changes were related to the strength of entrainment of environmental air into the convective column, the strength of re-evaporation above cloud base, and a negative plume buoyancy threshold based on density temperature. This study illustrates how individual, noncomposition model changes can lead to significantly different modeled composition, which in this case improved agreement with satellite retrievals. This study also illuminates the potential usefulness of CO satellite observations in constraining unobservable processes in general circulation models. Key Points * AR5 ModelE2 had too much upper tropospheric CO during a major emissions event * Changes to the subgrid physics significantly reduced this discrepancy * Comparing against TES/MLS CO was a useful independent model test JF - Journal of Geophysical Research: Atmospheres AU - Field, Robert D AU - Luo, Ming AU - Kim, Daehyun AU - Del Genio, Anthony D AU - Voulgarakis, Apostolos AU - Worden, John AD - NASA Goddard Institute for Space Studies, New York, New York, USA. Y1 - 2015/11// PY - 2015 DA - November 2015 SP - 11 EP - 11,759 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 120 IS - 22 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Convection KW - Entrainment KW - Atmospheric pollution models KW - Tropopause KW - Indonesia KW - Convection development KW - turbulence KW - Low clouds KW - Carbon monoxide KW - Carbon KW - Microwaves KW - Modelling KW - Buoyancy KW - Simulation Analysis KW - Troposphere KW - Atmospheric circulation KW - Biomass KW - Satellite instrumentation KW - Madden-Julian oscillation KW - Vertical advection KW - Clouds KW - Incineration KW - Strength KW - Satellite data KW - Numerical simulations KW - General circulation models KW - Convective activity KW - Q2 09243:Structure, mechanics and thermodynamics KW - M2 551.510.42:Air Pollution (551.510.42) KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1776672986?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=Sensitivity+of+simulated+tropospheric+CO+to+subgrid+physics+parameterization%3A+A+case+study+of+Indonesian+biomass+burning+emissions+in+2006&rft.au=Field%2C+Robert+D%3BLuo%2C+Ming%3BKim%2C+Daehyun%3BDel+Genio%2C+Anthony+D%3BVoulgarakis%2C+Apostolos%3BWorden%2C+John&rft.aulast=Field&rft.aufirst=Robert&rft.date=2015-11-01&rft.volume=120&rft.issue=22&rft.spage=11&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2015JD023402 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-03-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Convection; Clouds; Carbon monoxide; Microwaves; Troposphere; Atmospheric circulation; Vertical advection; Buoyancy; Modelling; Entrainment; Atmospheric pollution models; Tropopause; Convection development; Satellite instrumentation; Low clouds; Madden-Julian oscillation; Satellite data; Numerical simulations; General circulation models; Convective activity; Strength; Incineration; Carbon; Simulation Analysis; turbulence; Biomass; Indonesia DO - http://dx.doi.org/10.1002/2015JD023402 ER - TY - JOUR T1 - A hot flow anomaly at Mars AN - 1776669655; PQ0002797149 AB - One of the most important modes of planet/solar wind interaction are "foreshock transients" such as hot flow anomalies (HFAs). Here we present early observations by the NASA Mars Atmosphere and Volatile EvolutioN spacecraft, confirming their presence at Mars and for the first time at an unmagnetized planet revealing the underlying ion perturbations that drive the phenomenon, finding them to be weaker than at magnetized planets. Analysis revealed the HFA to be virtually microscopic: the smallest on record at 2200 km across and commensurate with the local proton gyroradius, resulting in a much stronger perturbation in solar wind protons than alpha particles. As at Venus, despite being physically diminutive, the HFA is still large (0.66 RM) when compared to the relative size of the induced magnetosphere. Given the associated order of magnitude decrease in solar wind dynamic pressure (411 pPa 70 pPa), we find that HFAs at Mars have the potential to directly impact the topside ionosphere. We thus hypothesize that the loss of a planetary magnetic dynamo left Mars far more vulnerable to the pressure pulses resulting from HFAs and related foreshock transients. Key Points * We confirm that hot flow anomalies occur at Mars * Ion perturbations are weaker than at Earth due to their relatively short lifespan * HFAs have the potential to directly impact the topside ionosphere of Mars JF - Geophysical Research Letters AU - Collinson, Glyn AU - Halekas, Jasper AU - Grebowsky, Joseph AU - Connerney, Jack AU - Mitchell, David AU - Espley, Jared AU - DiBraccio, Gina AU - Mazelle, Christian AU - Sauvaud, Jean-Andre AU - Fedorov, Andrei AU - Jakosky, Bruce AD - NASA Goddard Spaceflight Center, Greenbelt, Maryland, USA. Y1 - 2015/11// PY - 2015 DA - November 2015 SP - 9121 EP - 9127 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 42 IS - 21 SN - 0094-8276, 0094-8276 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Flow KW - Solar wind KW - Solar wind dynamics KW - Atmosphere KW - Mars atmosphere KW - Magnetosphere KW - Solar wind protons KW - Ionosphere KW - Venus studies KW - Vulnerability KW - Wind KW - Evolution KW - Q2 09262:Methods and instruments KW - SW 0810:General KW - M2 523.4:Planets (523.4) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1776669655?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=A+hot+flow+anomaly+at+Mars&rft.au=Collinson%2C+Glyn%3BHalekas%2C+Jasper%3BGrebowsky%2C+Joseph%3BConnerney%2C+Jack%3BMitchell%2C+David%3BEspley%2C+Jared%3BDiBraccio%2C+Gina%3BMazelle%2C+Christian%3BSauvaud%2C+Jean-Andre%3BFedorov%2C+Andrei%3BJakosky%2C+Bruce&rft.aulast=Collinson&rft.aufirst=Glyn&rft.date=2015-11-01&rft.volume=42&rft.issue=21&rft.spage=9121&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL065079 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-03-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Ionosphere; Vulnerability; Mars atmosphere; Magnetosphere; Solar wind protons; Solar wind; Solar wind dynamics; Venus studies; Flow; Atmosphere; Evolution; Wind DO - http://dx.doi.org/10.1002/2015GL065079 ER - TY - JOUR T1 - Magnetotail dynamics at Mars: Initial MAVEN observations AN - 1776668593; PQ0002797173 AB - We report on the complex nature of the induced Martian magnetotail using simultaneous magnetic field and plasma measurements from the Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft. Two case studies are analyzed from which we identify (1) repetitive loading and unloading of tail magnetic flux as the field magnitude changes dramatically, exhibiting signatures similar to substorm activity within intrinsic magnetospheres; (2) multiple current sheet crossings indicative of plasma sheet flapping; (3) tailward flowing high-energy planetary ions (O super(+) and O sub(2) super(+)), confined exclusively to the cross-tail current sheet, contributing to atmospheric escape; and (4) signatures of magnetic flux ropes, suggesting the occurrence of tail reconnection. These events illustrate the complexity of the Martian magnetotail as MAVEN provides key observations relevant to the unanswered questions of induced magnetosphere dynamics. Key Points * Initial MAVEN observations demonstrate dynamics of the complex Martian magnetotail * Observed substorm-like loading/unloading of magnetic flux with signatures of magnetic reconnection * Escaping high-energy planetary ions are observed exclusively in tail current sheet JF - Geophysical Research Letters AU - DiBraccio, Gina A AU - Espley, JaredR AU - Gruesbeck, Jacob R AU - Connerney, John EP AU - Brain, David A AU - Halekas, Jasper S AU - Mitchell, David L AU - McFadden, James P AU - Harada, Yuki AU - Livi, Roberto AU - Collinson, Glyn AU - Hara, Takuya AU - Mazelle, Christian AU - Jakosky, Bruce M AD - Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2015/11// PY - 2015 DA - November 2015 SP - 8828 EP - 8837 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 42 IS - 21 SN - 0094-8276, 0094-8276 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Magnetotail KW - Mars magnetic field KW - Mars magnetotail KW - Mars KW - Spacecraft KW - Current observations KW - Atmosphere KW - Identification keys KW - Case studies KW - Magnetosphere KW - Mars atmospheric evolution KW - Ions KW - Case Studies KW - Illustrations KW - Mars magnetosphere KW - Identification KW - Mars evolution KW - Mars magnetospheric ions KW - Magnetic fields KW - Mars atmosphere KW - Magnetic reconnection KW - Fluctuations KW - Evolution KW - Q2 09262:Methods and instruments KW - SW 0810:General KW - M2 523.4:Planets (523.4) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1776668593?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=Magnetotail+dynamics+at+Mars%3A+Initial+MAVEN+observations&rft.au=DiBraccio%2C+Gina+A%3BEspley%2C+JaredR%3BGruesbeck%2C+Jacob+R%3BConnerney%2C+John+EP%3BBrain%2C+David+A%3BHalekas%2C+Jasper+S%3BMitchell%2C+David+L%3BMcFadden%2C+James+P%3BHarada%2C+Yuki%3BLivi%2C+Roberto%3BCollinson%2C+Glyn%3BHara%2C+Takuya%3BMazelle%2C+Christian%3BJakosky%2C+Bruce+M&rft.aulast=DiBraccio&rft.aufirst=Gina&rft.date=2015-11-01&rft.volume=42&rft.issue=21&rft.spage=8828&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL065248 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-03-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Magnetic fields; Illustrations; Current observations; Identification; Identification keys; Mars magnetospheric ions; Mars atmosphere; Magnetosphere; Mars atmospheric evolution; Mars magnetic field; Magnetotail; Mars magnetotail; Magnetic reconnection; Mars magnetosphere; Mars; Mars evolution; Ions; Case studies; Spacecraft; Atmosphere; Case Studies; Fluctuations; Evolution DO - http://dx.doi.org/10.1002/2015GL065248 ER - TY - JOUR T1 - A comet engulfs Mars: MAVEN observations of comet Siding Spring's influence on the Martian magnetosphere AN - 1776667152; PQ0002797216 AB - The nucleus of comet C/2013 A1 (Siding Spring) passed within 141,000km of Mars on 19 October 2014. Thus, the cometary coma and the plasma it produces washed over Mars for several hours producing significant effects in the Martian magnetosphere and upper atmosphere. We present observations from Mars Atmosphere and Volatile EvolutioN's (MAVEN's) particles and field's instruments that show the Martian magnetosphere was severely distorted during the comet's passage. We note four specific major effects: (1) a variable induced magnetospheric boundary, (2) a strong rotation of the magnetic field as the comet approached, (3) severely distorted and disordered ionospheric magnetic fields during the comet's closest approach, and (4) unusually strong magnetosheath turbulence lasting hours after the comet left. We argue that the comet produced effects comparable to that of a large solar storm (in terms of incident energy) and that our results are therefore important for future studies of atmospheric escape, MAVEN's primary science objective. Key Points * Comet Siding Spring's coma and plasma engulfed Mars on 19 October 2014 * The comet's plasma very likely severely distorted the Martian magnetosphere * The comet might have driven atmospheric escape like a strong solar storm JF - Geophysical Research Letters AU - Espley, Jared R AU - DiBraccio, Gina A AU - Connerney, John EP AU - Brain, David AU - Gruesbeck, Jacob AU - Soobiah, Yasir AU - Halekas, Jasper AU - Combi, Michael AU - Luhmann, Janet AU - Ma, Yingjuan AU - Jia, Yingdong AU - Jakosky, Bruce AD - Laboratory for Planetary Magnetospheres, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2015/11// PY - 2015 DA - November 2015 SP - 8810 EP - 8818 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 42 IS - 21 SN - 0094-8276, 0094-8276 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Mars magnetic field KW - Comet coma KW - Mars KW - Particulates KW - turbulence KW - Atmosphere KW - Storms KW - Magnetosphere KW - Mars atmospheric evolution KW - Storms on Mars KW - Turbulence KW - Solar energy KW - Upper atmosphere KW - Mars ionosphere KW - Mars magnetosphere KW - Comets KW - Magnetic fields KW - Mars atmosphere KW - Energy KW - Rotation of Mars KW - Boundaries KW - Evolution KW - Q2 09262:Methods and instruments KW - SW 0810:General KW - M2 523.4:Planets (523.4) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1776667152?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=A+comet+engulfs+Mars%3A+MAVEN+observations+of+comet+Siding+Spring%27s+influence+on+the+Martian+magnetosphere&rft.au=Espley%2C+Jared+R%3BDiBraccio%2C+Gina+A%3BConnerney%2C+John+EP%3BBrain%2C+David%3BGruesbeck%2C+Jacob%3BSoobiah%2C+Yasir%3BHalekas%2C+Jasper%3BCombi%2C+Michael%3BLuhmann%2C+Janet%3BMa%2C+Yingjuan%3BJia%2C+Yingdong%3BJakosky%2C+Bruce&rft.aulast=Espley&rft.aufirst=Jared&rft.date=2015-11-01&rft.volume=42&rft.issue=21&rft.spage=8810&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL066300 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-03-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Magnetic fields; Upper atmosphere; Mars magnetic field; Mars ionosphere; Comet coma; Mars; Mars magnetosphere; Comets; Storms; Mars atmosphere; Magnetosphere; Mars atmospheric evolution; Rotation of Mars; Storms on Mars; Solar energy; Energy; Particulates; Turbulence; Atmosphere; Boundaries; turbulence; Evolution DO - http://dx.doi.org/10.1002/2015GL066300 ER - TY - JOUR T1 - On the dependence of storm time ULF wave power on magnetopause location: Impacts for ULF wave radial diffusion AN - 1776666905; PQ0002797248 AB - Ultralow frequency (ULF) waves play a crucial role in energetic particle dynamics in the inner magnetosphere. We examine the role of the magnetopause location in controlling the amplitude and penetration of ULF waves within the inner magnetosphere during 63 coronal mass ejection (CME)-driven and corotating interaction region (CIR)-driven geomagnetic storms. Significantly, at the time when the magnetopause is most compressed, ULF wave power increases and penetrates to the deepest L shells. Most likely this is explained by proximity to the energy source and accumulation of energy within a smaller volume through solar wind-magnetopause-magnetosphere coupling, and changes in the storm time Alfven continuum resulting from variations in the cold plasma density. The observed ULF wave power is consistently larger than Kp-dependent statistical estimates-especially in the heart of the outer radiation belt. This has important implications for radiation belt dynamics, including main phase loss and storm time ULF wave radial diffusion. Key Points * The magnetopause location controls ULF wave amplitude and penetration into the inner magnetosphere * ULF wave power can be underestimated by 2 orders of magnitude during storm main phase * Loss due to outward radial diffusion during storm main phase is faster than typically modeled JF - Geophysical Research Letters AU - Murphy, Kyle R AU - Mann, Ian R AU - Sibeck, David G AD - NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2015/11// PY - 2015 DA - November 2015 SP - 9676 EP - 9684 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 42 IS - 22 SN - 0094-8276, 0094-8276 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Wave frequency KW - Density KW - Wave power KW - Statistical analysis KW - Coronal mass ejections KW - Radiation belts KW - Energy sources KW - Storms KW - Wave amplitude KW - Magnetopause KW - Wave interactions KW - Magnetosphere KW - Radiation KW - Energy KW - Energy resources KW - Geomagnetic storms KW - Waves KW - Particle dynamics KW - Accumulation KW - Solar energy KW - Q2 09262:Methods and instruments KW - SW 0810:General KW - M2 523.62:Solar Wind, Interplanetary Plasma (523.62) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1776666905?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=On+the+dependence+of+storm+time+ULF+wave+power+on+magnetopause+location%3A+Impacts+for+ULF+wave+radial+diffusion&rft.au=Murphy%2C+Kyle+R%3BMann%2C+Ian+R%3BSibeck%2C+David+G&rft.aulast=Murphy&rft.aufirst=Kyle&rft.date=2015-11-01&rft.volume=42&rft.issue=22&rft.spage=9676&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL066592 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-03-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Wave frequency; Radiation; Energy resources; Wave power; Storms; Wave amplitude; Wave interactions; Magnetosphere; Geomagnetic storms; Statistical analysis; Coronal mass ejections; Radiation belts; Particle dynamics; Solar energy; Magnetopause; Density; Energy; Waves; Energy sources; Accumulation DO - http://dx.doi.org/10.1002/2015GL066592 ER - TY - JOUR T1 - Structure and composition of the neutral upper atmosphere of Mars from the MAVEN NGIMS investigation AN - 1776660933; PQ0002797140 AB - The Mars Atmosphere and Volatile EvolutioN (MAVEN) Neutral Gas and Ion Mass Spectrometer (NGIMS) provides sensitive detections of neutral gas and ambient ion composition. NGIMS measurements of nine atomic and molecular neutral species, and their variation with altitude, latitude, and solar zenith angle are reported over several months of operation of the MAVEN mission. Sampling NGIMS signals from multiple neutral species every several seconds reveals persistent and unexpectedly large amplitude density structures. The scale height temperatures are mapped over the course of the first few months of the mission from high down to midlatitudes. NGIMS measurements near the homopause of super(40)Ar/N sub(2) ratios agree with those reported by the Sample Analysis at Mars investigation and allow the altitude of the homopause for the most abundant gases to be established. Key Points * Neutral density structure measured with high temporal resolution * Scale height temperature of the upper atmosphere reported * Homopause altitude identified JF - Geophysical Research Letters AU - Mahaffy, PR AU - Benna, M AU - Elrod, M AU - Yelle, R V AU - Bougher, S W AU - Stone, S W AU - Jakosky, B M AD - Planetary Environments Laboratory, Code 699, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2015/11// PY - 2015 DA - November 2015 SP - 8951 EP - 8957 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 42 IS - 21 SN - 0094-8276, 0094-8276 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Biological surveys KW - Atmospheric gases KW - Density KW - Temperature KW - Population density KW - Atmosphere KW - Altitude KW - Mars atmosphere KW - Latitudinal variations KW - Sampling KW - Evolution KW - Upper atmosphere KW - Spectrometers KW - Q2 09262:Methods and instruments KW - SW 0810:General KW - M2 523.4:Planets (523.4) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1776660933?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=Structure+and+composition+of+the+neutral+upper+atmosphere+of+Mars+from+the+MAVEN+NGIMS+investigation&rft.au=Mahaffy%2C+PR%3BBenna%2C+M%3BElrod%2C+M%3BYelle%2C+R+V%3BBougher%2C+S+W%3BStone%2C+S+W%3BJakosky%2C+B+M&rft.aulast=Mahaffy&rft.aufirst=PR&rft.date=2015-11-01&rft.volume=42&rft.issue=21&rft.spage=8951&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL065329 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-03-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Biological surveys; Atmospheric gases; Latitudinal variations; Population density; Upper atmosphere; Mars atmosphere; Altitude; Density; Temperature; Sampling; Atmosphere; Evolution; Spectrometers DO - http://dx.doi.org/10.1002/2015GL065329 ER - TY - JOUR T1 - First measurements of composition and dynamics of the Martian ionosphere by MAVEN's Neutral Gas and Ion Mass Spectrometer AN - 1776655256; PQ0002797143 AB - We report the results of the observations of the ionosphere of Mars by the Neutral Gas and Ion Mass Spectrometer. These observations were conducted during the first 8months of the Mars Atmosphere and Volatile EvolutioN mission (MAVEN). These observations revealed the spatial and temporal structures in the density distributions of 22 ions: H sub(2) super(+), H sub(3) super(+), He super(+), O super(2+), C super(+), CH super(+), N super(+), NH super(+), O super(+), OH super(+), H sub(2)O super(+), H sub(3)O super(+), N sub(2) super(+)/CO super(+), HCO super(+)/HOC super(+)/N sub(2)H super(+), NO super(+), HNO super(+), O sub(2) super(+), HO sub(2) super(+), Ar super(+), ArH super(+), CO sub(2) super(+), and OCOH super(+). Dusk/dawn and day/night asymmetries in the density distributions were observed for nearly all ion species. Additionally, high-density fluctuations were detected on the nightside and may reflect the effect of the partial screening of the atmosphere of Mars by the weak intrinsic magnetic field of the planet. The two first MAVEN "deep dip" campaigns were used to investigate the location of the primary ion peak. This peak was detected at 190km near the terminator but was below the spacecraft altitude of 130km near the subsolar point. Key Points * Several ionospheric species were detected during the first 8months of the MAVEN mission * The major ion density peak was detected near the terminator at 190km altitude * The density profiles of all ions exhibit day/night and dusk/dawn asymmetries JF - Geophysical Research Letters AU - Benna, M AU - Mahaffy, PR AU - Grebowsky, J M AU - Fox, J L AU - Yelle, R V AU - Jakosky, B M AD - NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2015/11// PY - 2015 DA - November 2015 SP - 8958 EP - 8965 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 42 IS - 21 SN - 0094-8276, 0094-8276 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Screening KW - Ions KW - Atmospheric gases KW - Density KW - Mars atmospheric composition KW - Ecological distribution KW - Population density KW - Mars KW - Atmosphere KW - Identification keys KW - Magnetic fields KW - Altitude KW - Mars atmosphere KW - Ionosphere KW - Density profiles KW - Fluctuations KW - Evolution KW - Spectrometers KW - Mars nighttime ionosphere KW - Q2 09262:Methods and instruments KW - SW 0810:General KW - M2 523.4:Planets (523.4) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1776655256?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=First+measurements+of+composition+and+dynamics+of+the+Martian+ionosphere+by+MAVEN%27s+Neutral+Gas+and+Ion+Mass+Spectrometer&rft.au=Benna%2C+M%3BMahaffy%2C+PR%3BGrebowsky%2C+J+M%3BFox%2C+J+L%3BYelle%2C+R+V%3BJakosky%2C+B+M&rft.aulast=Benna&rft.aufirst=M&rft.date=2015-11-01&rft.volume=42&rft.issue=21&rft.spage=8958&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL066146 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-03-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Screening; Magnetic fields; Atmospheric gases; Ecological distribution; Ionosphere; Population density; Density profiles; Identification keys; Mars atmosphere; Mars atmospheric composition; Mars; Mars nighttime ionosphere; Ions; Altitude; Density; Fluctuations; Atmosphere; Evolution; Spectrometers DO - http://dx.doi.org/10.1002/2015GL066146 ER - TY - JOUR T1 - Electric Mars: The first direct measurement of an upper limit for the Martian "polar wind" electric potential AN - 1776644000; PQ0002797185 AB - An important mechanism in the generation of polar wind outflow is the ambipolar electric potential which assists ions in overcoming gravity and is a key mechanism for Terrestrial ionospheric escape. At Mars, open field lines are not confined to the poles, and outflow of ionospheric electrons is observed far into the tail. It has thus been hypothesized that a similar electric potential may be present at Mars, contributing to global ionospheric loss. However, no direct measurements of this potential have been made. In this pilot study, we examine photoelectron spectra measured by the Solar Wind Electron Analyzer instrument on the NASA Mars Atmosphere and Volatile EvolutioN (MAVEN) Mars Scout to put an initial upper bound on the total potential drop in the ionosphere of Mars of , with the possibility of a further 4.5 V potential drop above this in the magnetotail. If the total potential drop was close to the upper limit, then strong outflows of major ionospheric species (H super(+), O super(+), and ) would be expected. However, if most of the potential drop is confined below the spacecraft, as expected by current theory, then such a potential would not be sufficient on its own to accelerate to escape velocities, but would be sufficient for lighter ions. However, any potential would contribute to atmospheric loss through the enhancement of Jeans escape. Key Points * We put the first upper limit on the magnitude of the "polar wind" like parallel electric field * The strength of this electric field is <2 V in the ionosphere * This field is too weak to accelerate (the main ionospheric species) to escape velocities JF - Geophysical Research Letters AU - Collinson, Glyn AU - Mitchell, David AU - Glocer, Alex AU - Grebowsky, Joseph AU - Peterson, W K AU - Connerney, Jack AU - Andersson, Laila AU - Espley, Jared AU - Mazelle, Christian AU - Sauvaud, Jean-Andre AU - Fedorov, Andrei AU - Ma, Yingjuan AU - Bougher, Steven AU - Lillis, Robert AU - Ergun, Robert AU - Jakosky, Bruce AD - NASA Goddard Spaceflight Center, Greenbelt, Maryland, USA. Y1 - 2015/11// PY - 2015 DA - November 2015 SP - 9128 EP - 9134 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 42 IS - 21 SN - 0094-8276, 0094-8276 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Mars winds KW - Magnetotail KW - Mars magnetotail KW - Polar wind KW - Fluid Drops KW - Mars KW - Atmosphere KW - Wind fields KW - Identification keys KW - Electric fields KW - Electric potential KW - Solar wind electrons KW - Wind KW - Marine KW - Ions KW - Mars gravity field KW - Outflow KW - Brackish KW - Velocity KW - Electric Fields KW - Electric field KW - Mars spectra KW - Mars ionospheric currents KW - Ocean currents KW - Strength KW - Mars atmosphere KW - Ionosphere KW - Evolution KW - Electric Potential KW - Q2 09262:Methods and instruments KW - SW 0810:General KW - M2 523.4:Planets (523.4) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1776644000?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=Electric+Mars%3A+The+first+direct+measurement+of+an+upper+limit+for+the+Martian+%22polar+wind%22+electric+potential&rft.au=Collinson%2C+Glyn%3BMitchell%2C+David%3BGlocer%2C+Alex%3BGrebowsky%2C+Joseph%3BPeterson%2C+W+K%3BConnerney%2C+Jack%3BAndersson%2C+Laila%3BEspley%2C+Jared%3BMazelle%2C+Christian%3BSauvaud%2C+Jean-Andre%3BFedorov%2C+Andrei%3BMa%2C+Yingjuan%3BBougher%2C+Steven%3BLillis%2C+Robert%3BErgun%2C+Robert%3BJakosky%2C+Bruce&rft.aulast=Collinson&rft.aufirst=Glyn&rft.date=2015-11-01&rft.volume=42&rft.issue=21&rft.spage=9128&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL065084 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-03-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Ocean currents; Electric fields; Ionosphere; Outflow; Electric potential; Identification keys; Wind fields; Mars ionospheric currents; Mars spectra; Mars atmosphere; Magnetotail; Mars winds; Mars magnetotail; Polar wind; Mars gravity field; Mars; Electric field; Solar wind electrons; Ions; Strength; Fluid Drops; Velocity; Electric Fields; Atmosphere; Evolution; Wind; Electric Potential; Marine; Brackish DO - http://dx.doi.org/10.1002/2015GL065084 ER - TY - JOUR T1 - On the detectability of trace chemical species in the Martian atmosphere using gas correlation filter radiometry AN - 1729850419; 2015-102915 AB - The martian atmosphere is host to many trace gases including water (H (sub 2) O) and its isotopologues, methane (CH (sub 4) ) and potentially sulphur dioxide (SO (sub 2) ), nitrous oxide (N (sub 2) O) and further organic compounds, which would serve as indirect tracers of geological, chemical and biological processes on Mars. With exception of the recent detection of CH (sub 4) by Curiosity, previous detections of these species have been unsuccessful or considered tentative due to the low concentrations of these species in the atmosphere ( approximately 10 (super -9) partial pressures), limited spectral resolving power and/or signal-to-noise and the challenge of discriminating between telluric and martian features when observing from the Earth. In this study, we present radiative transfer simulations of an alternative method for detection of trace gas species - the gas correlation radiometry method. Two potential observing scenarios were explored where a gas correlation filter radiometer (GCFR) instrument: (1) performs nadir and/or limb sounding of the martian atmosphere in the thermal infrared (200-2000 cm (super -1) from an orbiting spacecraft or (2) performs solar occultation measurements in the near-infrared (2000-5000 cm (super -1) ) from a lander on the martian surface. In both scenarios, simulations of a narrowband filter radiometer (without gas correlation) were also generated to serve as a comparison. From a spacecraft, we find that a gas correlation filter radiometer, in comparison to a filter radiometer (FR), offers a greater discrimination between temperature and dust, a greater discrimination between H (sub 2) O and HDO, and would allow detection of N (sub 2) O and CH (sub 3) OH at concentrations of approximately 10 ppbv and approximately 2 ppbv, respectively, which are lower than previously-derived upper limits. However, the lowest retrievable concentration of SO2 (approximately 2 ppbv) is comparable with previous upper limits and CH4 is only detectable at concentrations of approximately 10 ppbv, which is an order of magnitude higher than the concentration recently measured by Curiosity. From a lander in low dust conditions, both a filter radiometer and gas correlation filter radiometer would provide measurement of H (sub 2) O and HDO, which allows the D/H ratio in H2O to be determined. Detection of N (sub 2) O, CH (sub 4) , SO (sub 2) , C (sub 2) H (sub 2) , C (sub 2) H (sub 6) at concentrations lower than previously-derived upper limits would be possible using a gas correlation filer radiometer in low dust conditions. However, either radiometer would be unable to detect these trace gases in high dust conditions, with the exception of H (sub 2) O. JF - Icarus AU - Sinclair, J A AU - Irwin, P G J AU - Calcutt, S B AU - Wilson, E L Y1 - 2015/11/01/ PY - 2015 DA - 2015 Nov 01 SP - 103 EP - 127 PB - Elsevier, New York, NY VL - 260 SN - 0019-1035, 0019-1035 KW - acetylene KW - aliphatic hydrocarbons KW - Mars KW - ethane KW - temperature KW - radiometers KW - alkynes KW - spacecraft KW - sediments KW - alcohols KW - thermal emission KW - gas correlation filter radiometers KW - chemical composition KW - water KW - sulfur dioxide KW - methane KW - clastic sediments KW - nitrous oxide KW - atmosphere KW - formaldehyde KW - alkanes KW - methanol KW - measurement KW - gases KW - terrestrial planets KW - planets KW - organic compounds KW - detection KW - dust KW - hydrocarbons KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1729850419?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=On+the+detectability+of+trace+chemical+species+in+the+Martian+atmosphere+using+gas+correlation+filter+radiometry&rft.au=Sinclair%2C+J+A%3BIrwin%2C+P+G+J%3BCalcutt%2C+S+B%3BWilson%2C+E+L&rft.aulast=Sinclair&rft.aufirst=J&rft.date=2015-11-01&rft.volume=260&rft.issue=&rft.spage=103&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.07.005 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 60 N1 - PubXState - NY N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2015-11-05 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - acetylene; alcohols; aliphatic hydrocarbons; alkanes; alkynes; atmosphere; chemical composition; clastic sediments; detection; dust; ethane; formaldehyde; gas correlation filter radiometers; gases; hydrocarbons; Mars; measurement; methane; methanol; nitrous oxide; organic compounds; planets; radiometers; remote sensing; sediments; spacecraft; sulfur dioxide; temperature; terrestrial planets; thermal emission; water DO - http://dx.doi.org/10.1016/j.icarus.2015.07.005 ER - TY - JOUR T1 - Coupling the Mars dust and water cycles; the importance of radiative-dynamic feedbacks during northern hemisphere summer AN - 1729849059; 2015-102937 JF - Icarus AU - Kahre, M A AU - Hollingsworth, J L AU - Haberle, R M AU - Wilson, R J Y1 - 2015/11/01/ PY - 2015 DA - 2015 Nov 01 SP - 477 EP - 480 PB - Elsevier, New York, NY VL - 260 SN - 0019-1035, 0019-1035 KW - water KW - clouds KW - general circulation models KW - polar regions KW - three-dimensional models KW - clastic sediments KW - water vapor KW - Mars KW - terrestrial planets KW - feedback KW - planets KW - atmospheric circulation KW - hydrologic cycle KW - dynamics KW - ice KW - dust KW - sediments KW - seasonal variations KW - climate KW - dynamic properties KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1729849059?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Coupling+the+Mars+dust+and+water+cycles%3B+the+importance+of+radiative-dynamic+feedbacks+during+northern+hemisphere+summer&rft.au=Kahre%2C+M+A%3BHollingsworth%2C+J+L%3BHaberle%2C+R+M%3BWilson%2C+R+J&rft.aulast=Kahre&rft.aufirst=M&rft.date=2015-11-01&rft.volume=260&rft.issue=&rft.spage=477&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.07.017 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 25 N1 - PubXState - NY N1 - Document feature - illus. N1 - Last updated - 2015-11-05 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - atmospheric circulation; clastic sediments; climate; clouds; dust; dynamic properties; dynamics; feedback; general circulation models; hydrologic cycle; ice; Mars; planets; polar regions; seasonal variations; sediments; terrestrial planets; three-dimensional models; water; water vapor DO - http://dx.doi.org/10.1016/j.icarus.2014.07.017 ER - TY - NEWS T1 - Close Encounter with Enceladus AN - 1728574109 JF - UPI Space Daily AU - Ferris Molina for NASA Science News Y1 - 2015/11/01/ PY - 2015 DA - 2015 Nov 01 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1728574109?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=Close+Encounter+with+Enceladus&rft.au=Ferris+Molina+for+NASA+Science+News&rft.aulast=Ferris+Molina+for+NASA+Science+News&rft.aufirst=&rft.date=2015-11-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-11-02 ER - TY - JOUR T1 - Rapid water loss can extend the lifetime of planetary habitability AN - 1832668763; 762124-79 AB - Two habitable planetary states are proposed: an aqua planet like the Earth and a land planet that has a small amount of water. Land planets keep liquid water under larger solar radiation compared to aqua planets. Water loss may change an aqua planet into a land planet, and the planet can remain habitable for a longer time than if it had remained an aqua planet. We calculate planetary evolution with hydrogen escape for different initial water inventories and different distances from the central star. We find that there are two conditions necessary to evolve an aqua planet into a land planet: the critical amount of water on the surface (M (sub ml) ) consistent with a planet being a land planet, and the critical amount of water vapor in the atmosphere (M (sub cv) ) that defines the onset of the runaway greenhouse state. We find that Earth-sized aqua planets with initial oceans <10% of the Earth's can evolve into land planets if M (sub cv) = 3 m in precipitable water and M (sub ml) = 5% of the Earth's ocean mass. Such planets can keep liquid water on their surface for another 2 Gyr. The initial amount of water and M (sub cv) are shown to be important dividing parameters of the planetary evolution path. Our results indicate that massive hydrogen escape could give a fresh start as another kind of habitable planet rather than the end of its habitability. Copyright (Copyright) 2015. The American Astronomical Society. All rights reserved. JF - The Astrophysical Journal AU - Kodama, Takanori AU - Genda, Hidenori AU - Abe, Yutaka AU - Zahnle, Kevin J Y1 - 2015/10/20/ PY - 2015 DA - 2015 Oct 20 EP - Paper no. 165 PB - IOP Publishing for American Astronomical Society, Bristol VL - 812 IS - 2 SN - 0004-637X, 0004-637X KW - water KW - planets KW - habitability KW - extrasolar planets KW - hydrogen KW - atmosphere KW - water vapor KW - greenhouse effect KW - habitable zone KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832668763?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Astrophysical+Journal&rft.atitle=Rapid+water+loss+can+extend+the+lifetime+of+planetary+habitability&rft.au=Kodama%2C+Takanori%3BGenda%2C+Hidenori%3BAbe%2C+Yutaka%3BZahnle%2C+Kevin+J&rft.aulast=Kodama&rft.aufirst=Takanori&rft.date=2015-10-20&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://iopscience.iop.org/0004-637X LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data supplied by IOP Publishing Ltd., London, United Kingdom N1 - Number of references - 27 N1 - Document feature - illus. N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - atmosphere; extrasolar planets; greenhouse effect; habitability; habitable zone; hydrogen; planets; water; water vapor DO - http://dx.doi.org/10.1088/0004-637X/812/2/165 ER - TY - JOUR T1 - Ice chemistry on outer solar system bodies; electron radiolysis of N (sub 2) -, CH (sub 4) -, and CO-containing ices AN - 1832666886; 762124-64 AB - Radiation processing of the surface ices of outer Solar System bodies may be an important process for the production of complex chemical species. The refractory materials resulting from radiation processing of known ices are thought to impart to them a red or brown color, as perceived in the visible spectral region. In this work, we analyzed the refractory materials produced from the 1.2-keV electron bombardment of low-temperature N (sub 2) -, CH (sub 4) -, and CO-containing ices (100:1:1), which simulates the radiation from the secondary electrons produced by cosmic ray bombardment of the surface ices of Pluto. Despite starting with extremely simple ices dominated by N (sub 2) , electron irradiation processing results in the production of refractory material with complex oxygen- and nitrogen-bearing organic molecules. These refractory materials were studied at room temperature using multiple analytical techniques including Fourier-transform infrared spectroscopy, X-ray absorption near-edge structure (XANES) spectroscopy, and gas chromatography coupled with mass spectrometry (GC-MS). Infrared spectra of the refractory material suggest the presence of alcohols, carboxylic acids, ketones, aldehydes, amines, and nitriles. XANES spectra of the material indicate the presence of carboxyl groups, amides, urea, and nitriles, and are thus consistent with the IR data. Atomic abundance ratios for the bulk composition of these residues from XANES analysis show that the organic residues are extremely N-rich, having ratios of N/C � 0.9 and O/C � 0.2. Finally, GC-MS data reveal that the residues contain urea as well as numerous carboxylic acids, some of which are of interest for prebiotic and biological chemistries. Copyright (Copyright) 2015. The American Astronomical Society. All rights reserved. JF - The Astrophysical Journal AU - Materese, Christopher K AU - Cruikshank, Dale P AU - Sandford, Scott A AU - Imanaka, Hiroshi AU - Nuevo, Michel Y1 - 2015/10/20/ PY - 2015 DA - 2015 Oct 20 EP - Paper no. 150 PB - IOP Publishing for American Astronomical Society, Bristol VL - 812 IS - 2 SN - 0004-637X, 0004-637X KW - irradiation KW - oxygen KW - Kuiper Belt KW - prebiotic chemistry KW - gas chromatograms KW - aliphatic hydrocarbons KW - mass spectra KW - dwarf planets KW - transneptunian objects KW - temperature KW - nitrogen KW - infrared spectra KW - carbon dioxide KW - XANES spectra KW - laboratory studies KW - FTIR spectra KW - ice KW - cosmic rays KW - spectra KW - radiolysis KW - electrons KW - experimental studies KW - methane KW - alkanes KW - X-ray spectra KW - carbon monoxide KW - organic compounds KW - chromatograms KW - low temperature KW - hydrocarbons KW - Pluto KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832666886?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Astrophysical+Journal&rft.atitle=Ice+chemistry+on+outer+solar+system+bodies%3B+electron+radiolysis+of+N+%28sub+2%29+-%2C+CH+%28sub+4%29+-%2C+and+CO-containing+ices&rft.au=Materese%2C+Christopher+K%3BCruikshank%2C+Dale+P%3BSandford%2C+Scott+A%3BImanaka%2C+Hiroshi%3BNuevo%2C+Michel&rft.aulast=Materese&rft.aufirst=Christopher&rft.date=2015-10-20&rft.volume=812&rft.issue=2&rft.spage=&rft.isbn=&rft.btitle=&rft.title=The+Astrophysical+Journal&rft.issn=0004637X&rft_id=info:doi/10.1088%2F0004-637X%2F812%2F2%2F150 L2 - http://iopscience.iop.org/0004-637X LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data supplied by IOP Publishing Ltd., London, United Kingdom N1 - Number of references - 41 N1 - Document feature - illus. N1 - SuppNotes - Includes appendix N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; carbon dioxide; carbon monoxide; chromatograms; cosmic rays; dwarf planets; electrons; experimental studies; FTIR spectra; gas chromatograms; hydrocarbons; ice; infrared spectra; irradiation; Kuiper Belt; laboratory studies; low temperature; mass spectra; methane; nitrogen; organic compounds; oxygen; Pluto; prebiotic chemistry; radiolysis; spectra; temperature; transneptunian objects; X-ray spectra; XANES spectra DO - http://dx.doi.org/10.1088/0004-637X/812/2/150 ER - TY - JOUR T1 - The Pluto system; initial results from its exploration by New Horizons AN - 1765869795; 2016-014727 AB - The Pluto system was recently explored by NASA's New Horizons spacecraft, making closest approach on 14 July 2015. Pluto's surface displays diverse landforms, terrain ages, albedos, colors, and composition gradients. Evidence is found for a water-ice crust, geologically young surface units, surface ice convection, wind streaks, volatile transport, and glacial flow. Pluto's atmosphere is highly extended, with trace hydrocarbons, a global haze layer, and a surface pressure near 10 microbars. Pluto's diverse surface geology and long-term activity raise fundamental questions about how small planets remain active many billions of years after formation. Pluto's large moon Charon displays tectonics and evidence for a heterogeneous crustal composition; its north pole displays puzzling dark terrain. Small satellites Hydra and Nix have higher albedos than expected. JF - Science AU - Stern, S A AU - Bagenal, F AU - Ennico, K AU - Gladstone, G R AU - Grundy, W M AU - McKinnon, W B AU - Moore, J M AU - Olkin, C B AU - Spencer, J R AU - Weaver, H A AU - Young, L A AU - Andert, T AU - Andrews, J AU - Banks, M AU - Bauer, B AU - Bauman, J AU - Barnouin, O S AU - Bedini, P AU - Beisser, K AU - Beyer, R A AU - Bhaskaran, S AU - Binzel, R P AU - Birath, E AU - Bird, M AU - Bogan, D J AU - Bowman, A AU - Bray, V J AU - Brozovic, M AU - Bryan, C AU - Buckley, M R AU - Buie, M W AU - Buratti, B J AU - Bushman, S S AU - Calloway, A AU - Carcich, B AU - Cheng, A F AU - Conard, S AU - Conrad, C A AU - Cook, J C AU - Cruikshank, D P AU - Custodio, O S AU - Dalle Ore, C M AU - Deboy, C AU - Dischner, Z J B AU - Dumont, P AU - Earle, A M AU - Elliott, H A AU - Ercol, J AU - Ernst, C M AU - Finley, T AU - Flanigan, S H AU - Fountain, G AU - Freeze, M J AU - Greathouse, T AU - Green, J L AU - Guo, Y AU - Hahn, M AU - Hamilton, D P AU - Hamilton, S A AU - Hanley, J AU - Harch, A AU - Hart, H M AU - Hersman, C B AU - Hill, A AU - Hill, M E AU - Hinson, D P AU - Holdridge, M E AU - Horanyi, M AU - Howard, A D AU - Howett, C J A AU - Jackman, C AU - Jacobson, R A AU - Jennings, D E AU - Kammer, J A AU - Kang, H K AU - Kaufmann, D E AU - Kollmann, P AU - Krimigis, S M AU - Kusnierkiewicz, D AU - Lauer, T R AU - Lee, J E AU - Lindstrom, K L AU - Linscott, I R AU - Lisse, C M AU - Lunsford, A W AU - Mallder, V A AU - Martin, N AU - McComas, D J AU - McNutt, R L, Jr AU - Mehoke, D AU - Mehoke, T AU - Melin, E D AU - Mutchler, M AU - Nelson, D AU - Nimmo, F AU - Nunez, J I AU - Ocampo, A AU - Owen, W M AU - Paetzold, M AU - Page, B AU - Parker, A H AU - Parker, J W AU - Pelletier, F AU - Peterson, J AU - Pinkine, N AU - Piquette, M AU - Porter, S B AU - Protopapa, S AU - Redfern, J AU - Reitsema, H J AU - Reuter, D C AU - Roberts, J H AU - Robbins, S J AU - Rogers, G AU - Rose, D AU - Runyon, K AU - Retherford, K D AU - Ryschkewitsch, M G AU - Schenk, P AU - Schindhelm, E AU - Sepan, B AU - Showalter, M R AU - Singer, K N AU - Soluri, M AU - Stanbridge, D AU - Steffl, A J AU - Strobel, D F AU - Stryk, T AU - Summers, M E AU - Szalay, J R AU - Tapley, M AU - Taylor, A AU - Taylor, H AU - Throop, H B AU - Tsang, C C C AU - Tyler, G L AU - Umurhan, O M AU - Verbiscer, A J AU - Versteeg, M H AU - Vincent, M AU - Webbert, R AU - Weidner, S AU - Weigle, G E, II AU - White, O L AU - Whittenburg, K AU - Williams, B G AU - Williams, K AU - Williams, S AU - Woods, W W AU - Zangari, A M AU - Zirnstein, E Y1 - 2015/10/16/ PY - 2015 DA - 2015 Oct 16 SP - 292 PB - American Association for the Advancement of Science, Washington, DC VL - 350 IS - 6258 SN - 0036-8075, 0036-8075 KW - albedo KW - atmosphere KW - landforms KW - dwarf planets KW - exploration KW - volatiles KW - ice KW - surface features KW - Charon KW - orbital observations KW - satellites KW - Pluto KW - New Horizons Mission KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765869795?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science&rft.atitle=The+Pluto+system%3B+initial+results+from+its+exploration+by+New+Horizons&rft.au=Zurek%2C+R+W%3BTolson%2C+R+H%3BBougher%2C+S+W%3BBaird%2C+D%3BKass%2C+D%3BSmith%2C+M%3BCantor%2C+B%3BDemcak%2C+S%3BAnonymous&rft.aulast=Zurek&rft.aufirst=R&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.sciencemag.org/magazine LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 37 N1 - PubXState - DC N1 - Document feature - illus. incl. sketch map N1 - Last updated - 2016-02-18 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - albedo; atmosphere; Charon; dwarf planets; exploration; ice; landforms; New Horizons Mission; orbital observations; Pluto; satellites; surface features; volatiles DO - http://dx.doi.org/10.1126/science.aad1815 ER - TY - JOUR T1 - Deposition, exhumation, and paleoclimate of an ancient lake deposit, Gale Crater, Mars AN - 1734265557; 2015-110053 AB - The landforms of northern Gale crater on Mars expose thick sequences of sedimentary rocks. Based on images obtained by the Curiosity rover, we interpret these outcrops as evidence for past fluvial, deltaic, and lacustrine environments. Degradation of the crater wall and rim probably supplied these sediments, which advanced inward from the wall, infilling both the crater and an internal lake basin to a thickness of at least 75 meters. This intracrater lake system probably existed intermittently for thousands to millions of years, implying a relatively wet climate that supplied moisture to the crater rim and transported sediment via streams into the lake basin. The deposits in Gale crater were then exhumed, probably by wind-driven erosion, creating Aeolis Mons (Mount Sharp). JF - Science AU - Grotzinger, J P AU - Gupta, S AU - Malin, M C AU - Rubin, D M AU - Schieber, J AU - Siebach, K AU - Sumner, D Y AU - Stack, K M AU - Vasavada, A R AU - Arvidson, R E AU - Calef, F, III AU - Edgar, L AU - Fischer, W F AU - Grant, J A AU - Griffes, J AU - Kah, L C AU - Lamb, Michael P AU - Lewis, K W AU - Mangold, N AU - Minitti, M E AU - Palucis, M AU - Rice, M AU - Williams, R M E AU - Yingst, R A AU - Blake, D AU - Blaney, D AU - Conrad, P AU - Crisp, J AU - Dietrich, W E AU - Dromart, G AU - Edgett, K S AU - Ewing, R C AU - Gellert, R AU - Hurowitz, J A AU - Kocurek, G AU - Mahaffy, P AU - McBride, M J AU - McLennan, S M AU - Mischna, M AU - Ming, D AU - Milliken, R AU - Newsom, H AU - Oehler, D AU - Parker, T J AU - Vaniman, D AU - Wiens, R C AU - Wilson, S A Y1 - 2015/10/09/ PY - 2015 DA - 2015 Oct 09 SP - 177 PB - American Association for the Advancement of Science, Washington, DC VL - 350 IS - 6257 SN - 0036-8075, 0036-8075 KW - water KW - impact features KW - Mars KW - paleoclimatology KW - Gale Crater KW - terrestrial planets KW - models KW - Aeolis Mons KW - planets KW - sedimentary rocks KW - paleoenvironment KW - Curiosity Rover KW - Mars Science Laboratory Mission KW - lacustrine environment KW - exhumation KW - outcrops KW - impact craters KW - depositional environment KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734265557?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science&rft.atitle=Deposition%2C+exhumation%2C+and+paleoclimate+of+an+ancient+lake+deposit%2C+Gale+Crater%2C+Mars&rft.au=Grotzinger%2C+J+P%3BGupta%2C+S%3BMalin%2C+M+C%3BRubin%2C+D+M%3BSchieber%2C+J%3BSiebach%2C+K%3BSumner%2C+D+Y%3BStack%2C+K+M%3BVasavada%2C+A+R%3BArvidson%2C+R+E%3BCalef%2C+F%2C+III%3BEdgar%2C+L%3BFischer%2C+W+F%3BGrant%2C+J+A%3BGriffes%2C+J%3BKah%2C+L+C%3BLamb%2C+Michael+P%3BLewis%2C+K+W%3BMangold%2C+N%3BMinitti%2C+M+E%3BPalucis%2C+M%3BRice%2C+M%3BWilliams%2C+R+M+E%3BYingst%2C+R+A%3BBlake%2C+D%3BBlaney%2C+D%3BConrad%2C+P%3BCrisp%2C+J%3BDietrich%2C+W+E%3BDromart%2C+G%3BEdgett%2C+K+S%3BEwing%2C+R+C%3BGellert%2C+R%3BHurowitz%2C+J+A%3BKocurek%2C+G%3BMahaffy%2C+P%3BMcBride%2C+M+J%3BMcLennan%2C+S+M%3BMischna%2C+M%3BMing%2C+D%3BMilliken%2C+R%3BNewsom%2C+H%3BOehler%2C+D%3BParker%2C+T+J%3BVaniman%2C+D%3BWiens%2C+R+C%3BWilson%2C+S+A&rft.aulast=Grotzinger&rft.aufirst=J&rft.date=2015-10-09&rft.volume=350&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.sciencemag.org/magazine LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 103 N1 - PubXState - DC N1 - Document feature - illus. incl. strat. cols., geol. sketch maps N1 - SuppNotes - Full text available only online N1 - Last updated - 2015-11-19 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - Aeolis Mons; Curiosity Rover; depositional environment; exhumation; Gale Crater; impact craters; impact features; lacustrine environment; Mars; Mars Science Laboratory Mission; models; outcrops; paleoclimatology; paleoenvironment; planets; sedimentary rocks; terrestrial planets; water DO - http://dx.doi.org/10.1126/science.aac7575 ER - TY - JOUR T1 - The 2014 KCG meteor outburst; clues to a parent body AN - 1832666268; 762147-8 AB - The � Cygnid (KCG) meteor shower exhibited unusually high activity in 2014, producing ten times the flux of KCG meteors compared to normal years. The shower was detected during the routine operation of several radar and optical systems. Meteoroids associated with the outburst ranged from approximately 10 (super �6) �10 (super �5) kg for radar meteors and from 10 (super �3) to 2 kg for optical meteors. The Canadian Meteor Orbit Radar, Czech part of the European Fireball Network, and NASA All Sky and Southern Ontario Meteor Networks produced thousands of KCG meteor trajectories in total. Using these data, we have undertaken a new and improved characterization of the dynamics of this little-studied, variable meteor shower. The KCGs have a diffuse radiant and a significant spread in orbital characteristics. Our analysis of the highest quality KCG trajectories reveals concentrations of stream members near major resonances with Jupiter. We conducted a new search for parent bodies and find that several known asteroids are orbitally similar to the KCGs. Our meteor stream simulations show that the two best parent body candidates readily transfer meteoroids to the Earth in recent centuries, but neither produces a match to the KCG radiant, velocity, and solar longitude. We nevertheless identify asteroid 2001 MG1 as a promising parent body candidate. Copyright (Copyright) 2015. The American Astronomical Society. All rights reserved. JF - The Astronomical Journal (New York) AU - Moorhead, Althea V AU - Brown, Peter G AU - Spurny, Pavel AU - Cooke, William J AU - Shrbeny, Lukas Y1 - 2015/10/01/ PY - 2015 DA - 2015 Oct 01 EP - Paper no. 122 PB - IOP Publishing for American Institute of Physics, Bristol VL - 150 IS - 4 SN - 0004-6256, 0004-6256 KW - numerical models KW - meteor observation networks KW - asteroids KW - orbits KW - parent bodies KW - Jupiter KW - trajectories KW - Kappa Cygnid meteor shower KW - meteoroids KW - simulation KW - giant planets KW - meteors KW - Southern Ontario Meteor Network KW - planets KW - resonance KW - NASA All Sky Fireball Network KW - European Fireball Network KW - dynamics KW - meteor showers KW - outer planets KW - Canadian Meteor Orbit Radar KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832666268?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Astronomical+Journal+%28New+York%29&rft.atitle=The+2014+KCG+meteor+outburst%3B+clues+to+a+parent+body&rft.au=Moorhead%2C+Althea+V%3BBrown%2C+Peter+G%3BSpurny%2C+Pavel%3BCooke%2C+William+J%3BShrbeny%2C+Lukas&rft.aulast=Moorhead&rft.aufirst=Althea&rft.date=2015-10-01&rft.volume=150&rft.issue=4&rft.spage=&rft.isbn=&rft.btitle=&rft.title=The+Astronomical+Journal+%28New+York%29&rft.issn=00046256&rft_id=info:doi/10.1088%2F0004-6256%2F150%2F4%2F122 L2 - http://www.iop.org/EJ/journal/aj LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data supplied by IOP Publishing Ltd., London, United Kingdom N1 - Number of references - 38 N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - asteroids; Canadian Meteor Orbit Radar; dynamics; European Fireball Network; giant planets; Jupiter; Kappa Cygnid meteor shower; meteor observation networks; meteor showers; meteoroids; meteors; NASA All Sky Fireball Network; numerical models; orbits; outer planets; parent bodies; planets; resonance; simulation; Southern Ontario Meteor Network; trajectories DO - http://dx.doi.org/10.1088/0004-6256/150/4/122 ER - TY - JOUR T1 - PV dynamics; the role of small-scale turbulence, submesoscales and mesoscales AN - 1832664979; 766417-23 AB - The diabatic and frictional components of the PV fluxes J in the Haynes-McIntyre conservation law have been studied with physical arguments, scaling laws and numerical simulations. We suggest a procedure that expresses J in terms of buoyancy and momentum fluxes by small-scale turbulence SS, submesoscales SM and mesoscales M. We employ the latest parameterizations of these processes and derive analytic expressions of the diabatic and frictional J fluxes for arbitrary wind stresses; we then consider the case of an Ekman flow. Small-scale turbulence: at z=0, down and up-front winds contribute equally to the frictional component of J while the diabatic component is much larger than that of mesoscales. Submesoscales: the geostrophic contributions to both diabatic and frictional J have the same sign while the wind contributions have opposite signs. Their magnitude depends on the SM kinetic energy which is derived in terms of large-scale parameters. Comparison with numerical simulations is limited since the ones available resolve M but not SM. They concluded that the field patterns of the J fluxes are very similar to those obtained without resolving M, in agreement with the present analysis; a second conclusion that the diabatic component of J is an order of magnitude larger than the frictional one, is also in accordance with present results. When wind stresses are accounted for, down-front winds lower PV and up-front winds increase it. The changes in Hoskins' criterion for the onset of symmetric instabilities are discussed. Abstract Copyright Published 2015. This article is a U.S. Government work and is in the public domain in the USA. JF - Journal of Geophysical Research: Oceans AU - Canuto, V M Y1 - 2015/10// PY - 2015 DA - October 2015 SP - 6971 EP - 6985 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 120 IS - 10 SN - 2169-9275, 2169-9275 KW - currents KW - ocean circulation KW - numerical models KW - data processing KW - turbulence KW - ocean currents KW - 07:Oceanography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832664979?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Oceans&rft.atitle=PV+dynamics%3B+the+role+of+small-scale+turbulence%2C+submesoscales+and+mesoscales&rft.au=Canuto%2C+V+M&rft.aulast=Canuto&rft.aufirst=V&rft.date=2015-10-01&rft.volume=120&rft.issue=10&rft.spage=6971&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Oceans&rft.issn=21699275&rft_id=info:doi/10.1002%2F2015JC011043 LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Number of references - 25 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - currents; data processing; numerical models; ocean circulation; ocean currents; turbulence DO - http://dx.doi.org/10.1002/2015JC011043 ER - TY - JOUR T1 - Compact Tissue-equivalent Proportional Counter for Deep Space Human Missions AN - 1776641900; PQ0002740253 AB - Effects on human health from the complex radiation environment in deep space have not been measured and can only be simulated here on Earth using experimental systems and beams of radiations produced by accelerators, usually one beam at a time. This makes it particularly important to develop instruments that can be used on deep-space missions to measure quantities that are known to be relatable to the biological effectiveness of space radiation. Tissue-equivalent proportional counters (TEPCs) are such instruments. Unfortunately, present TEPCs are too large and power intensive to be used beyond low Earth orbit (LEO). Here, the authors describe a prototype of a compact TEPC designed for deep space applications with the capability to detect both ambient galactic cosmic rays and intense solar particle event radiation. The device employs an approach that permits real time determination of (ProQuest: Formulae and/or non-USASCII text omitted) (and thus quality factor) using a single detector. This was accomplished by assigning sequential sampling intervals as detectors "1" and "2" and requiring the intervals to be brief compared to the change in dose rate. Tests with [gamma] rays show that the prototype instrument maintains linear response over the wide dose-rate range expected in space with an accuracy of better than 5% for dose rates above 3 mGy h super(-1). Measurements of (ProQuest: Formulae and/or non-USASCII text omitted) for 200 MeV n super(-1) carbon ions were better than 10%. Limited tests with fission spectrum neutrons show absorbed dose-rate accuracy better than 15%. JF - Health Physics AU - Straume, T AU - Braby, L A AU - Borak, T B AU - Lusby, T AU - Warner, D W AU - Perez-Nunez, D AD - NASA Ames Research Center, Moffett Field, CA 94035, Tore.Straume-1@nasa.gov Y1 - 2015/10// PY - 2015 DA - October 2015 SP - 277 EP - 283 PB - Williams & Wilkins, 351 W. Camden St. Baltimore MD 21201 United States VL - 109 IS - 4 SN - 0017-9078, 0017-9078 KW - Health & Safety Science Abstracts KW - detector KW - radiation KW - microdosimetry KW - atmospheric KW - radioactivity KW - natural UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1776641900?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ahealthsafetyabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Health+Physics&rft.atitle=Compact+Tissue-equivalent+Proportional+Counter+for+Deep+Space+Human+Missions&rft.au=Straume%2C+T%3BBraby%2C+L+A%3BBorak%2C+T+B%3BLusby%2C+T%3BWarner%2C+D+W%3BPerez-Nunez%2C+D&rft.aulast=Straume&rft.aufirst=T&rft.date=2015-10-01&rft.volume=109&rft.issue=4&rft.spage=277&rft.isbn=&rft.btitle=&rft.title=Health+Physics&rft.issn=00179078&rft_id=info:doi/10.1097%2FHP.0000000000000334 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-03-01 N1 - Last updated - 2016-03-30 DO - http://dx.doi.org/10.1097/HP.0000000000000334 ER - TY - JOUR T1 - Normal to inverse transition in Martian spinel; understanding the interplay between chromium, vanadium, and iron valence state partitioning through a crystal-chemical lens AN - 1756504212; 2016-007287 AB - Spinel is a very important rock-forming mineral that is found in basalts from Earth, Mars, the Earth's Moon, and basaltic meteorites. Spinel can be used as a sensitive indicator of petrologic and geochemical processes that occur in its host rock. This paper highlights the role of increasing f (sub O2) (from IW-1 to FMQ+2) in converting a >90% normal spinel to an approximately 25% magnetite (inverse) spinel, the trajectory of C (sub V) (super spinel/melt) as it relates to the ratio of V (super 3+) /V (super 4+) in the melt, and the crystal chemical attributes of the spinel that control the intrinsic compatibility of both V (super 3+) and V (super 4+) . This work examines the nuances of the V partitioning and provides a crystal chemical basis for understanding Fe (super 3+) , Cr, and V substitution into the octahedral sites of spinel. Understanding this interplay is critical for using spinels as both indicators of planetary parentage and reconstructing the redox history of magmatic systems on the terrestrial planets. Three potential examples for this use are provided. In addition, this work helps explain the ubiquitous miscibility gap between spinels with changing ulvospinel contents. JF - American Mineralogist AU - Papike, James J AU - Burger, Paul V AU - Bell, Aaron S AU - Shearer, Charles K AU - Le, Loan AU - Jones, John Y1 - 2015/10// PY - 2015 DA - October 2015 SP - 2018 EP - 2025 PB - Mineralogical Society of America, Washington, DC VL - 100 IS - 10 SN - 0003-004X, 0003-004X KW - volcanic rocks KW - oxygen KW - igneous rocks KW - phase transitions KW - Mars KW - iron KW - fugacity KW - partitioning KW - meteorites KW - vanadium KW - basalts KW - oxides KW - valency KW - chromium KW - ulvospinel KW - Moon KW - spinel KW - solid solution KW - indicators KW - terrestrial planets KW - planets KW - metals KW - cations KW - crystal chemistry KW - miscibility gap KW - 04:Extraterrestrial geology KW - 01C:Mineralogy of non-silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756504212?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Iron-manganese+redox+reactions+in+Endeavour+Crater+rim+apron+rocks&rft.au=Ming%2C+Douglas+W%3BMittlefehldt%2C+D+W%3BGellert%2C+R%3BPeretyazhko%2C+T%3BClark%2C+B+C%3BMorris%2C+R+V%3BYen%2C+A+S%3BArvidson%2C+R+E%3BCrumpler%2C+L+S%3BFarrand%2C+W+H%3BGrant%2C+J+A%2C+III%3BJolliff%2C+B+L%3BParker%2C+T+J%3BSchroeder%2C+C%3BAnonymous&rft.aulast=Ming&rft.aufirst=Douglas&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2016-01-01 N1 - Number of references - 46 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2016-01-14 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - basalts; cations; chromium; crystal chemistry; fugacity; igneous rocks; indicators; iron; Mars; metals; meteorites; miscibility gap; Moon; oxides; oxygen; partitioning; phase transitions; planets; solid solution; spinel; terrestrial planets; ulvospinel; valency; vanadium; volcanic rocks DO - http://dx.doi.org/10.2138/am-2015-5208 ER - TY - JOUR T1 - Effect of depth and vent fluid composition on the carbon sources at two neighboring deep-sea hydrothermal vent fields (Mid-Cayman Rise) AN - 1751212511; PQ0002340563 AB - In this study, we have used stable isotopes of megafauna, microbial mats and particulate organic matter to examine the effect of depth and vent fluid composition on the carbon sources at two proximal, chemically distinct hydrothermal vent fields along the Mid-Cayman Rise. The basalt hosted Piccard vent field (4980m) is twice as deep as the ultramafic hosted Von Damm vent field (2300m) and has very different faunal assemblages. Of particular note is the presence of seep-associated fauna, Escarpia and Lamellibrachia tubeworms, at the Von Damm vent field. We identify a greater range of carbon sources and a suggestion of increased photosynthetic inputs to the Von Damm vent field compared to Piccard vent field. Rimicaris hybisae shrimp are the only abundant species shared between the two vent fields with delta 13C values ranging between -22.7 and -10.1ppt. Higher concentrations of hydrogen sulfide in the vent fluids at Piccard is proposed to be responsible for varying the relative contributions of the carbon fixation cycles used by their epibionts. Seep-associated fauna at Von Damm rely on elevated, thermogenic hydrocarbon content of the vent fluids for their carbon source ( delta 13C values ranging from -21.3 to 11.6ppt). They also derive energy from hydrogen sulfide formed by the microbial reduction of sulfide ( delta 34S values ranging from -10.2 to -6.9ppt). The tubeworms have very short roots (buried at most a centimeter into rubble), suggesting that microbial sulfate reduction must be occurring either in the shallow subsurface and/or in the anterior part of the tube. Overall, megafauna at Von Damm vent field appear to have a smaller food chain length (smaller delta 15N range) but a greater breadth of trophic resources compared to the megafauna at the Piccard vent field. JF - Deep Sea Research (Part I, Oceanographic Research Papers) AU - Bennett, Sarah A AU - Dover, Cindy Van AU - Breier, John A AU - Coleman, Max AD - NASA Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA Y1 - 2015/10// PY - 2015 DA - October 2015 SP - 122 EP - 133 PB - Elsevier B.V., P.O. Box 800 Kidlington Oxford OX5 1DX United Kingdom VL - 104 SN - 0967-0637, 0967-0637 KW - ASFA Marine Biotechnology Abstracts; Ecology Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Oceanic Abstracts KW - Hydrothermal KW - Seeps KW - Food Web KW - Stable Isotopes KW - Cayman KW - Isotopes KW - Food chains KW - Sulfate reduction KW - Hydrogen sulphide KW - Carbon isotopes KW - Roots KW - Carbon sources KW - Hydrothermal springs KW - Sulphides KW - Carbon KW - Lamellibrachia KW - Deep sea KW - Marine KW - Decapoda KW - Hydrocarbons KW - Escarpia KW - Rimicaris KW - Hydrothermal vents KW - Hydrogen sulfide KW - Sulfide KW - Epibionts KW - Particulate organic matter KW - Megafauna KW - Energy KW - Microbial mats KW - Carbon fixation KW - Q4 27750:Environmental KW - O 6030:Oil and Gas Resources KW - D 04040:Ecosystem and Ecology Studies KW - Q2 09162:Methods and instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1751212511?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Deep+Sea+Research+%28Part+I%2C+Oceanographic+Research+Papers%29&rft.atitle=Effect+of+depth+and+vent+fluid+composition+on+the+carbon+sources+at+two+neighboring+deep-sea+hydrothermal+vent+fields+%28Mid-Cayman+Rise%29&rft.au=Bennett%2C+Sarah+A%3BDover%2C+Cindy+Van%3BBreier%2C+John+A%3BColeman%2C+Max&rft.aulast=Bennett&rft.aufirst=Sarah&rft.date=2015-10-01&rft.volume=104&rft.issue=&rft.spage=122&rft.isbn=&rft.btitle=&rft.title=Deep+Sea+Research+%28Part+I%2C+Oceanographic+Research+Papers%29&rft.issn=09670637&rft_id=info:doi/10.1016%2Fj.dsr.2015.06.005 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-12-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Sulphides; Food chains; Epibionts; Carbon; Hydrogen sulphide; Carbon isotopes; Hydrothermal springs; Carbon fixation; Isotopes; Sulfate reduction; Hydrocarbons; Roots; Hydrothermal vents; Carbon sources; Hydrogen sulfide; Sulfide; Particulate organic matter; Energy; Megafauna; Deep sea; Microbial mats; Decapoda; Rimicaris; Escarpia; Lamellibrachia; Marine DO - http://dx.doi.org/10.1016/j.dsr.2015.06.005 ER - TY - JOUR T1 - Improvement of the VEGF binding ability of DNA aptamers through in silico maturation and multimerization strategy AN - 1751204821; PQ0002338510 AB - Aptamers are mainly selected by in vitro selection using random nucleic acid libraries. These aptamers have often shown insufficient affinity for biomedical applications. We improved DNA aptamer binding affinity for vascular endothelial growth factor (VEGF) through in silico maturation (ISM) and aptamer multimerization. ISM is one of a number of evolutionary approaches and aptamer multimerization is one of several semi-rational strategies to improve function. We first reselected VEGF-binding aptamers using a partially randomized DNA library and identified two aptamers with higher binding ability than that of a known aptamer. We conducted ISM using the re-selected aptamers to optimize the key loop sequences created by a three-way junction structure. After five ISM rounds, we identified aptamer 2G19 [dissociation constant (Kd), 52nM] as a local optimum of the defined search space. We characterized the aptamer and found that a specific stem-loop structure was involved in aptamer VEGF recognition. To further improve its affinity for VEGF, we multimerized 2G19 or its stem-loop structure. The designed SL5-trivalent aptamer (Kd, 0.37nM) with three binding motifs significantly increased binding affinity, representing a 500-fold improvement from systematic evolution of ligands by exponential enrichment-selected aptamers. JF - Journal of Biotechnology AU - Fukaya, Takahiro AU - Abe, Koichi AU - Savory, Nasa AU - Tsukakoshi, Kaori AU - Yoshida, Wataru AU - Ferri, Stefano AU - Sode, Koji AU - Ikebukuro, Kazunori AD - Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, Japan Y1 - 2015/10// PY - 2015 DA - October 2015 SP - 99 EP - 105 PB - Elsevier B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 212 SN - 0168-1656, 0168-1656 KW - Biochemistry Abstracts 2: Nucleic Acids; Biotechnology and Bioengineering Abstracts KW - ISM in silico maturation KW - SPR surface plasmon resonance KW - SELEX systematic evolution of ligands by exponential enrichment KW - VEGF vascular endothelial growth factor KW - Aptamer KW - in silico maturation KW - Multimerization KW - Vascular endothelial growth factor KW - Aptamers KW - nucleic acids KW - Evolution KW - W 30940:Products KW - N 14845:Miscellaneous UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1751204821?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Abiotechresearch&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Biotechnology&rft.atitle=Improvement+of+the+VEGF+binding+ability+of+DNA+aptamers+through+in+silico+maturation+and+multimerization+strategy&rft.au=Fukaya%2C+Takahiro%3BAbe%2C+Koichi%3BSavory%2C+Nasa%3BTsukakoshi%2C+Kaori%3BYoshida%2C+Wataru%3BFerri%2C+Stefano%3BSode%2C+Koji%3BIkebukuro%2C+Kazunori&rft.aulast=Fukaya&rft.aufirst=Takahiro&rft.date=2015-10-01&rft.volume=212&rft.issue=&rft.spage=99&rft.isbn=&rft.btitle=&rft.title=Journal+of+Biotechnology&rft.issn=01681656&rft_id=info:doi/10.1016%2Fj.jbiotec.2015.08.011 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-12-01 N1 - Last updated - 2016-07-20 N1 - SubjectsTermNotLitGenreText - Vascular endothelial growth factor; Aptamers; nucleic acids; Evolution DO - http://dx.doi.org/10.1016/j.jbiotec.2015.08.011 ER - TY - JOUR T1 - Recent decadal trends in global phytoplankton composition AN - 1751202756; PQ0002329691 AB - Identifying major trends in biogeochemical composition of the oceans is essential to improve our understanding of biological responses to climate forcing. Using the NASA Ocean Biogeochemical Model combined with ocean color remote sensing data assimilation, we assessed the trends in phytoplankton composition (diatoms, cyanobacteria, coccolithophores, and chlorophytes) at a global scale for the period 1998-2012. We related these trends in phytoplankton to physical conditions (surface temperature, surface photosynthetically available radiation (PAR), and mixed layer depth (MLD)) and nutrients (iron, silicate, and nitrate). We found a significant global decline in diatoms (-1.22%yr super(-1), p<0.05). This trend was associated with a significant (p<0.05) shallowing of the MLD (-0.20%yr super(-1)), a significant increase in PAR (0.09%yr super(-1)), and a significant decline in nitrate (-0.38%yr super(-1)). The global decline in diatoms was mostly attributed to their decline in the North Pacific (-1.00%yr super(-1), p<0.05), where the MLD shallowed significantly and resulted in a decline in all three nutrients (p<0.05). None of the other phytoplankton groups exhibited a significant change globally, but regionally there were considerable significant trends. A decline in nutrients in the northernmost latitudes coincided with a significant decline in diatoms (North Pacific, -1.00%yr super(-1)) and chlorophytes (North Atlantic, -9.70%yr super(-1)). In the northern midlatitudes (North Central Pacific and Atlantic) where nutrients were more scarce, a decline in nutrients was associated with a decline in smaller phytoplankton: cyanobacteria declined significantly in the North Central Pacific (-0.72%yr super(-1)) and Atlantic (-1.56%yr super(-1)), and coccolithophores declined significantly in the North Central Atlantic (-2.06%yr super(-1)). These trends represent the diversity and complexity of mechanisms that drives phytoplankton communities to adapt to variable conditions of nutrients, light, and mixed layer depth. These results provide a first insight into the existence of trends in phytoplankton composition over the maturing satellite ocean color era and illustrate how changes in the conditions of the oceans in the last ~15years may have affected them. Key Points * Fifteen year assimilated ocean color observations show global decline in diatoms * Regional and global diatom decline coincide with changes in physics and nutrients * Evidence of regional shifts in phytoplankton composition JF - Global Biogeochemical Cycles AU - Rousseaux, Cecile S AU - Gregg, Watson W AD - Global Modeling and Assimilation Office, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2015/10// PY - 2015 DA - October 2015 SP - 1674 EP - 1688 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 29 IS - 10 SN - 0886-6236, 0886-6236 KW - ASFA 1: Biological Sciences & Living Resources; Microbiology Abstracts C: Algology, Mycology & Protozoology; Ecology Abstracts KW - Nitrate KW - Chlorophylls KW - Bacillariophyceae KW - Remote sensing KW - Diatoms KW - Phytoplankton KW - Nutrients KW - Models KW - Mixed layer depth KW - IN, North Pacific KW - Radiation KW - Temperature effects KW - I, Central Pacific KW - Data processing KW - Biogeochemistry KW - Climate KW - Silicic acid KW - Iron silicates KW - Environmental impact KW - AN, North Atlantic KW - AS, Central Atlantic KW - Satellites KW - Color KW - Light effects KW - Community composition KW - Cyanobacteria KW - Oceans KW - Iron KW - D 04040:Ecosystem and Ecology Studies KW - Q1 08604:Stock assessment and management KW - K 03320:Cell Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1751202756?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Global+Biogeochemical+Cycles&rft.atitle=Recent+decadal+trends+in+global+phytoplankton+composition&rft.au=Rousseaux%2C+Cecile+S%3BGregg%2C+Watson+W&rft.aulast=Rousseaux&rft.aufirst=Cecile&rft.date=2015-10-01&rft.volume=29&rft.issue=10&rft.spage=1674&rft.isbn=&rft.btitle=&rft.title=Global+Biogeochemical+Cycles&rft.issn=08866236&rft_id=info:doi/10.1002%2F2015GB005139 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-12-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Chlorophylls; Community composition; Cyanobacteria; Mixed layer depth; Radiation; Biogeochemistry; Iron silicates; Environmental impact; Phytoplankton; Temperature effects; Nitrate; Data processing; Silicic acid; Climate; Remote sensing; Diatoms; Nutrients; Satellites; Light effects; Color; Models; Oceans; Iron; Bacillariophyceae; I, Central Pacific; IN, North Pacific; AS, Central Atlantic; AN, North Atlantic DO - http://dx.doi.org/10.1002/2015GB005139 ER - TY - JOUR T1 - A complementary note to 'A lag-1 smoother approach to system-error estimation': the intrinsic limitations of residual diagnostics AN - 1735914512; PQ0002283246 AB - Recently, this author studied an approach to the estimation of system error based on combining observation residuals derived from a sequential filter and fixed lag-1 smoother. While extending the methodology to a variational formulation, experimenting with simple models and making sure consistency was found between the sequential and variational formulations, the limitations of the residual-based approach came clearly to the surface. This note uses the sequential assimilation application to simple nonlinear dynamics to highlight the issue. Only when some of the underlying error statistics are assumed known is it possible to estimate the unknown component. In general, when considerable uncertainties exist in the underlying statistics as a whole, attempts to obtain separate estimates of the various error covariances are bound to lead to misrepresentation of errors. The conclusions are particularly relevant to present-day attempts to estimate observation-error correlations from observation residual statistics. A brief illustration of the issue is also provided by comparing estimates of error correlations derived from a quasi-operational assimilation system and a corresponding Observing System Simulation Experiments framework. JF - Quarterly Journal of the Royal Meteorological Society AU - Todling, Ricardo AD - Global Modeling and Assimilation Office, NASA Goddard Space Flight Center, Greenbelt, MD, USA. Y1 - 2015/10// PY - 2015 DA - October 2015 SP - 2917 EP - 2922 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 141 IS - 692 SN - 0035-9009, 0035-9009 KW - Oceanic Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Filters KW - Meteorological data KW - Statistics KW - Numerical simulations KW - Simulation Analysis KW - Statistical analysis KW - Correlations KW - Identification KW - Data assimilation KW - Modelling KW - O 5080:Legal/Governmental KW - SW 0810:General KW - M2 551.5:General (551.5) KW - Q2 09244:Air-sea coupling UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1735914512?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Quarterly+Journal+of+the+Royal+Meteorological+Society&rft.atitle=A+complementary+note+to+%27A+lag-1+smoother+approach+to+system-error+estimation%27%3A+the+intrinsic+limitations+of+residual+diagnostics&rft.au=Todling%2C+Ricardo&rft.aulast=Todling&rft.aufirst=Ricardo&rft.date=2015-10-01&rft.volume=141&rft.issue=692&rft.spage=2917&rft.isbn=&rft.btitle=&rft.title=Quarterly+Journal+of+the+Royal+Meteorological+Society&rft.issn=00359009&rft_id=info:doi/10.1002%2Fqj.2546 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-11-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Identification; Modelling; Meteorological data; Numerical simulations; Correlations; Statistical analysis; Data assimilation; Filters; Statistics; Simulation Analysis DO - http://dx.doi.org/10.1002/qj.2546 ER - TY - JOUR T1 - Kepler, a giant leap for exoplanet studies AN - 1734270471; 2015-112808 JF - Eos (Washington, DC) AU - Lassauer, Jack L Y1 - 2015/10/01/ PY - 2015 DA - 2015 Oct 01 SP - 12 EP - 17 PB - American Geophysical Union, Washington, DC VL - 96 IS - 18 SN - 0096-3941, 0096-3941 KW - planets KW - detection KW - Kepler space telescope KW - extrasolar planets KW - exploration KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734270471?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos+%28Washington%2C+DC%29&rft.atitle=Kepler%2C+a+giant+leap+for+exoplanet+studies&rft.au=Lassauer%2C+Jack+L&rft.aulast=Lassauer&rft.aufirst=Jack&rft.date=2015-10-01&rft.volume=96&rft.issue=18&rft.spage=12&rft.isbn=&rft.btitle=&rft.title=Eos+%28Washington%2C+DC%29&rft.issn=00963941&rft_id=info:doi/ L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292324-9250 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 8 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2015-11-19 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - detection; exploration; extrasolar planets; Kepler space telescope; planets ER - TY - JOUR T1 - Mineralogy, petrology, chronology, and exposure history of the Chelyabinsk Meteorite and parent body AN - 1734267989; 2015-110012 AB - Three masses of the Chelyabinsk meteorite have been studied with a wide range of analytical techniques to understand the mineralogical variation and thermal history of the Chelyabinsk parent body. The samples exhibit little to no postentry oxidation via Mossbauer and Raman spectroscopy indicating their fresh character, but despite the rapid collection and care of handling some low levels of terrestrial contamination did nonetheless result. Detailed studies show three distinct lithologies, indicative of a genomict breccia. A light-colored lithology is LL5 material that has experienced thermal metamorphism and subsequent shock at levels near S4. The second lithology is a shock-darkened LL5 material in which the darkening is caused by melt and metal-troilite veins along grain boundaries. The third lithology is an impact melt breccia that formed at high temperatures ( approximately 1600 degrees C), and it experienced rapid cooling and degassing of S (sub 2) gas. Portions of light and dark lithologies from Chel-101, and the impact melt breccias (Chel-102 and Chel-103) were prepared and analyzed for Rb-Sr, Sm-Nd, and Ar-Ar dating. When combined with results from other studies and chronometers, at least eight impact events (e.g., approximately 4.53 Ga, approximately 4.45 Ga, approximately 3.73 Ga, approximately 2.81 Ga, approximately 1.46 Ga, approximately 852 Ma, approximately 312 Ma, and approximately 27 Ma) are clearly identified for Chelyabinsk, indicating a complex history of impacts and heating events. Finally, noble gases yield young cosmic ray exposure ages, near 1 Ma. These young ages, together with the absence of measurable cosmogenic derived Sm and Cr, indicate that Chelyabinsk may have been derived from a recent breakup event on an NEO of LL chondrite composition. Abstract Copyright Published 2015. This article is a U.S. Government work and is in the public domain in the USA. JF - Meteoritics & Planetary Science AU - Righter, Kevin AU - Abell, P AU - Agresti, D AU - Berger, E L AU - Burton, A S AU - Delaney, J S AU - Fries, M D AU - Gibson, E K AU - Haba, M K AU - Harrington, R AU - Herzog, G F AU - Keller, L P AU - Locke, D AU - Lindsay, F N AU - McCoy, T J AU - Morris, R V AU - Nagao, K AU - Nakamura-Messenger, K AU - Niles, P B AU - Nyquist, L E AU - Park, J AU - Peng, Z X AU - Shih, C Y AU - Simon, J I AU - Swisher, C C, III AU - Tappa, Michael J AU - Turrin, B D AU - Zeigler, R A Y1 - 2015/10// PY - 2015 DA - October 2015 SP - 1790 EP - 1819 PB - Meteoritical Society, Fayetteville, AR VL - 50 IS - 10 SN - 1086-9379, 1086-9379 KW - ordinary chondrites KW - stony meteorites KW - Russian Federation KW - thermal history KW - exposure age KW - Rb/Sr KW - electron probe data KW - Chelyabinsk Meteorite KW - meteorites KW - mineral composition KW - Commonwealth of Independent States KW - chronology KW - dates KW - absolute age KW - chondrites KW - chromium KW - Southern Urals KW - Urals KW - Ar/Ar KW - oxidation KW - LL chondrites KW - thermal metamorphism KW - impacts KW - metamorphism KW - meteorite falls KW - organic compounds KW - Sm/Nd KW - ion chromatograms KW - metals KW - chromatograms KW - fireballs KW - petrography KW - shock metamorphism KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734267989?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=Mineralogy%2C+petrology%2C+chronology%2C+and+exposure+history+of+the+Chelyabinsk+Meteorite+and+parent+body&rft.au=Righter%2C+Kevin%3BAbell%2C+P%3BAgresti%2C+D%3BBerger%2C+E+L%3BBurton%2C+A+S%3BDelaney%2C+J+S%3BFries%2C+M+D%3BGibson%2C+E+K%3BHaba%2C+M+K%3BHarrington%2C+R%3BHerzog%2C+G+F%3BKeller%2C+L+P%3BLocke%2C+D%3BLindsay%2C+F+N%3BMcCoy%2C+T+J%3BMorris%2C+R+V%3BNagao%2C+K%3BNakamura-Messenger%2C+K%3BNiles%2C+P+B%3BNyquist%2C+L+E%3BPark%2C+J%3BPeng%2C+Z+X%3BShih%2C+C+Y%3BSimon%2C+J+I%3BSwisher%2C+C+C%2C+III%3BTappa%2C+Michael+J%3BTurrin%2C+B+D%3BZeigler%2C+R+A&rft.aulast=Righter&rft.aufirst=Kevin&rft.date=2015-10-01&rft.volume=50&rft.issue=10&rft.spage=1790&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12511 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 109 N1 - PubXState - AR N1 - Document feature - illus. incl. 10 tables, sketch map N1 - Last updated - 2015-11-19 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - absolute age; Ar/Ar; Chelyabinsk Meteorite; chondrites; chromatograms; chromium; chronology; Commonwealth of Independent States; dates; electron probe data; exposure age; fireballs; impacts; ion chromatograms; LL chondrites; metals; metamorphism; meteorite falls; meteorites; mineral composition; ordinary chondrites; organic compounds; oxidation; petrography; Rb/Sr; Russian Federation; shock metamorphism; Sm/Nd; Southern Urals; stony meteorites; thermal history; thermal metamorphism; Urals DO - http://dx.doi.org/10.1111/maps.12511 ER - TY - JOUR T1 - Indigenous aliphatic amines in the aqueously altered Orgueil Meteorite AN - 1734265440; 2015-110009 AB - The CI1 Orgueil meteorite is a highly aqueously altered carbonaceous chondrite. It has been extensively studied, and despite its extensive degree of aqueous alteration and some documented instances of contamination, several indigenous organic compounds including amino acids, carboxylic acids, and nucleobases have been detected in its carbon-rich matrix. We recently developed a novel gas chromatographic method for the enantiomeric and compound-specific isotopic analyses of meteoritic aliphatic monoamines in extracts and have now applied this method to investigate the monoamine content in Orgueil. We detected 12 amines in Orgueil, with concentrations ranging from 1.1 to 332 nmol g (super -1) of meteorite and compared this amine content in Orgueil with that of the CM2 Murchison meteorite, which experienced less parent-body aqueous alteration. Methylamine is four times more abundant in Orgueil than in Murchison. As with other species, the amine content in Orgueil extracts shows less structural diversity than that in Murchison extracts. We measured the compound-specific stable carbon isotopic ratios (delta (super 13) C) for 5 of the 12 monoamines detected in Orgueil and found a range of delta (super 13) C values from -20 to +59 ppm. These delta (super 13) C values fall into the range of other meteoritic organic compounds, although they are (super 13) C-depleted relative to their counterparts extracted from the Murchison meteorite. In addition, we measured the enantiomeric composition for the chiral monoamines (R)- and (S)-sec-butylamine in Orgueil, and found it was racemic within experimental error, in contrast with the l-enantiomeric excess found for its amino acid structural analog isovaline. The racemic nature of sec-butylamine in Orgueil was comparable to that previously observed in Murchison, and to other CM2 and CR2 carbonaceous chondrites measured in this work (ALH 83100 [CM1/2], LON 94101 [CM2], LEW 90500 [CM2], LAP 02342 [CR2], and GRA 95229 [CR2]). These results allow us to place some constraints on the effects of aqueous alteration observed over the monoamine concentrations in Orgueil and Murchison, and to evaluate the primordial synthetic relationships between meteoritic monoamines and amino acids. Abstract Copyright The Meteoritical Society, 2015. JF - Meteoritics & Planetary Science AU - Aponte, Jose C AU - Dworkin, Jason P AU - Elsila, Jamie E Y1 - 2015/10// PY - 2015 DA - October 2015 SP - 1733 EP - 1749 PB - Meteoritical Society, Fayetteville, AR VL - 50 IS - 10 SN - 1086-9379, 1086-9379 KW - CI chondrites KW - monoamines KW - stony meteorites KW - Orgueil Meteorite KW - isotopes KW - isotope ratios KW - biochemistry KW - C-13/C-12 KW - aliphatic amines KW - astrobiology KW - carbonaceous chondrites KW - methylamine KW - stable isotopes KW - Murchison Meteorite KW - aqueous alteration KW - meteorites KW - organic compounds KW - organic acids KW - amines KW - carbon KW - amino acids KW - CM chondrites KW - chondrites KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734265440?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=Indigenous+aliphatic+amines+in+the+aqueously+altered+Orgueil+Meteorite&rft.au=Aponte%2C+Jose+C%3BDworkin%2C+Jason+P%3BElsila%2C+Jamie+E&rft.aulast=Aponte&rft.aufirst=Jose&rft.date=2015-10-01&rft.volume=50&rft.issue=10&rft.spage=1733&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12507 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 90 N1 - PubXState - AR N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2015-11-19 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - aliphatic amines; amines; amino acids; aqueous alteration; astrobiology; biochemistry; C-13/C-12; carbon; carbonaceous chondrites; chondrites; CI chondrites; CM chondrites; isotope ratios; isotopes; meteorites; methylamine; monoamines; Murchison Meteorite; organic acids; organic compounds; Orgueil Meteorite; stable isotopes; stony meteorites DO - http://dx.doi.org/10.1111/maps.12507 ER - TY - JOUR T1 - A Linearized Prognostic Cloud Scheme in NASA's Goddard Earth Observing System Data Assimilation Tools AN - 1732835936; PQ0002230073 AB - A linearized prognostic cloud scheme has been developed to accompany the linearized convection scheme recently implemented in NASA's Goddard Earth Observing System data assimilation tools. The linearization, developed from the nonlinear cloud scheme, treats cloud variables prognostically so they are subject to linearized advection, diffusion, generation, and evaporation. Four linearized cloud variables are modeled, the ice and water phases of clouds generated by large-scale condensation and, separately, by detraining convection. For each species the scheme models their sources, sublimation, evaporation, and autoconversion. Large-scale, anvil and convective species of precipitation are modeled and evaporated. The cloud scheme exhibits linearity and realistic perturbation growth, except around the generation of clouds through large-scale condensation. Discontinuities and steep gradients are widely used here and severe problems occur in the calculation of cloud fraction. For data assimilation applications this poor behavior is controlled by replacing this part of the scheme with a perturbation model. For observation impacts, where efficiency is less of a concern, a filtering is developed that examines the Jacobian. The replacement scheme is only invoked if Jacobian elements or eigenvalues violate a series of tuned constants. The linearized prognostic cloud scheme is tested by comparing the linear and nonlinear perturbation trajectories for 6-, 12-, and 24-h forecast times. The tangent linear model performs well and perturbations of clouds are well captured for the lead times of interest. JF - Monthly Weather Review AU - Holdaway, Daniel AU - Errico, Ronald AU - Gelaro, Ronald AU - Kim, Jong G AU - Mahajan, Rahul AD - Global Modeling and Assimilation Office, NASA Goddard Space Flight Center, Greenbelt, and Goddard Earth Sciences, Technology and Research, Universities Space Research Association, Columbia, Maryland Y1 - 2015/10// PY - 2015 DA - October 2015 SP - 4198 EP - 4219 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 143 IS - 10 SN - 0027-0644, 0027-0644 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Filtering techniques KW - Singular vectors KW - Variational analysis KW - Cloud parameterizations KW - Convective parameterization KW - Data assimilation KW - Convection KW - Weather KW - Meteorological data KW - Anvils KW - Evaporation KW - Convection development KW - Precipitation KW - Model Studies KW - Advection KW - Clouds KW - Growth KW - Eigenvalues KW - Convective activity KW - Condensation KW - Sublimation KW - Q2 09402:Freshwater from the sea KW - SW 0820:Snow, ice and frost KW - M2 556.13:Evaporation/Evapotranspiration (556.13) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1732835936?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Monthly+Weather+Review&rft.atitle=A+Linearized+Prognostic+Cloud+Scheme+in+NASA%27s+Goddard+Earth+Observing+System+Data+Assimilation+Tools&rft.au=Holdaway%2C+Daniel%3BErrico%2C+Ronald%3BGelaro%2C+Ronald%3BKim%2C+Jong+G%3BMahajan%2C+Rahul&rft.aulast=Holdaway&rft.aufirst=Daniel&rft.date=2015-10-01&rft.volume=143&rft.issue=10&rft.spage=4198&rft.isbn=&rft.btitle=&rft.title=Monthly+Weather+Review&rft.issn=00270644&rft_id=info:doi/10.1175%2FMWR-D-15-0037.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-11-01 N1 - Number of references - 36 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Convection; Growth; Sublimation; Clouds; Meteorological data; Anvils; Eigenvalues; Evaporation; Convective activity; Condensation; Convection development; Precipitation; Data assimilation; Advection; Weather; Model Studies DO - http://dx.doi.org/10.1175/MWR-D-15-0037.1 ER - TY - JOUR T1 - Quantifying sources and sinks of reactive gases in the lower atmosphere using airborne flux observations AN - 1732826747; PQ0002230631 AB - Atmospheric composition is governed by the interplay of emissions, chemistry, deposition, and transport. Substantial questions surround each of these processes, especially in forested environments with strong biogenic emissions. Utilizing aircraft observations acquired over a forest in the southeast U.S., we calculate eddy covariance fluxes for a suite of reactive gases and apply the synergistic information derived from this analysis to quantify emission and deposition fluxes, oxidant concentrations, aerosol uptake coefficients, and other key parameters. Evaluation of results against state-of-the-science models and parameterizations provides insight into our current understanding of this system and frames future observational priorities. As a near-direct measurement of fundamental process rates, airborne fluxes offer a new tool to improve biogenic and anthropogenic emissions inventories, photochemical mechanisms, and deposition parameterizations. Key Points * Airborne flux observations for a suite of reactive gases * Direct constraints on production, loss, and surface-atmosphere exchange * Comprehensive evaluation of chemical budgets over a temperate forest JF - Geophysical Research Letters AU - Wolfe, G M AU - Hanisco, T F AU - Arkinson, H L AU - Bui, T P AU - Crounse, J D AU - Dean-Day, J AU - Goldstein, A AU - Guenther, A AU - Hall AU - Huey, G AU - Jacob, D J AU - Karl, T AU - Kim, P S AU - Liu, X AU - Marvin, M R AU - Mikoviny, T AU - Misztal, P K AU - Nguyen, T B AU - Peischl, J AU - Pollack, I AU - Ryerson, T AU - St Clair, JM AU - Teng, A AU - Travis, K R AU - Ullmann, K AU - Wennberg, PO AU - Wisthaler, A AD - Atmospheric Chemistry and Dynamics Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2015/10// PY - 2015 DA - October 2015 SP - 8231 EP - 8240 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 42 IS - 19 SN - 0094-8276, 0094-8276 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Photochemistry KW - Marine KW - Aerosols KW - Atmospheric gases KW - Aircraft observations KW - Parameterization KW - Anthropogenic factors KW - Sinks KW - Oceanic eddies KW - Current observations KW - Atmosphere KW - Evaluation KW - Eddies KW - Aircraft KW - Eddy covariance KW - Atmospheric chemistry KW - Absorption KW - Deposition KW - Atmospheric composition KW - Uptake KW - Fluctuations KW - M2 551.510.42:Air Pollution (551.510.42) KW - SW 0810:General KW - Q2 09105:Research programmes and expeditions UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1732826747?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=Quantifying+sources+and+sinks+of+reactive+gases+in+the+lower+atmosphere+using+airborne+flux+observations&rft.au=Wolfe%2C+G+M%3BHanisco%2C+T+F%3BArkinson%2C+H+L%3BBui%2C+T+P%3BCrounse%2C+J+D%3BDean-Day%2C+J%3BGoldstein%2C+A%3BGuenther%2C+A%3BHall%3BHuey%2C+G%3BJacob%2C+D+J%3BKarl%2C+T%3BKim%2C+P+S%3BLiu%2C+X%3BMarvin%2C+M+R%3BMikoviny%2C+T%3BMisztal%2C+P+K%3BNguyen%2C+T+B%3BPeischl%2C+J%3BPollack%2C+I%3BRyerson%2C+T%3BSt+Clair%2C+JM%3BTeng%2C+A%3BTravis%2C+K+R%3BUllmann%2C+K%3BWennberg%2C+PO%3BWisthaler%2C+A&rft.aulast=Wolfe&rft.aufirst=G&rft.date=2015-10-01&rft.volume=42&rft.issue=19&rft.spage=8231&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL065839 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-11-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Photochemistry; Atmospheric gases; Aerosols; Atmospheric chemistry; Anthropogenic factors; Parameterization; Uptake; Oceanic eddies; Current observations; Eddy covariance; Aircraft observations; Atmospheric composition; Evaluation; Eddies; Aircraft; Absorption; Sinks; Deposition; Atmosphere; Fluctuations; Marine DO - http://dx.doi.org/10.1002/2015GL065839 ER - TY - JOUR T1 - A prototype physical database for passive microwave retrievals of precipitation over the US Southern Great Plains AN - 1732825406; PQ0002211064 AB - An accurate understanding of the instantaneous, dynamic land surface emissivity is necessary for a physically based, multi-channel passive microwave precipitation retrieval scheme over land. In an effort to assess the feasibility of the physical approach for land surfaces, a semi-empirical emissivity model is applied for calculation of the surface component in a test area of the US Southern Great Plains. A physical emissivity model, using land surface model data as input, is used to calculate emissivity at the 10GHz frequency, combining contributions from the underlying soil and vegetation layers, including the dielectric and roughness effects of each medium. An empirical technique is then applied, based upon a robust set of observed channel covariances, extending the emissivity calculations to all channels. For calculation of the hydrometeor contribution, reflectivity profiles from the Tropical Rainfall Measurement Mission Precipitation Radar (TRMM PR) are utilized along with coincident brightness temperatures (Tbs) from the TRMM Microwave Imager (TMI), and cloud-resolving model profiles. Ice profiles are modified to be consistent with the higher frequency microwave Tbs. Resulting modeled top of the atmosphere Tbs show correlations to observations of 0.9, biases of 1K or less, root-mean-square errors on the order of 5K, and improved agreement over the use of climatological emissivity values. The synthesis of these models and data sets leads to the creation of a simple prototype Tb database that includes both dynamic surface and atmospheric information physically consistent with the land surface model, emissivity model, and atmospheric information. Key Points * A simple geophysical database is created using combined active/passive satellite sensors over SGP * An emissivity model is coupled with hydrometeor profiles, constrained using satellite observations * Simulated Tbs from the physical database are compared to observed values with correlations of 0.9 JF - Journal of Geophysical Research: Atmospheres AU - Ringerud, S AU - Kummerow, C D AU - Peters-Lidard, C D AD - NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2015/10// PY - 2015 DA - October 2015 SP - 10 EP - 10,482 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 120 IS - 19 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Remote Sensing KW - Hydrometeor profiles KW - Prototypes KW - Correlations KW - Surface radiation temperature KW - Emissivity KW - Microwaves KW - Soils KW - Tetrapropylene-benzene Sulfonate KW - Modelling KW - Atmospheric precipitations KW - Satellite Technology KW - Ice KW - Precipitation KW - Channels KW - Clouds KW - Databases KW - Roughness effects KW - Satellite data KW - Radar observation of hydrometeors KW - USA, Great Plains KW - Microwave investigation of hydrometeors KW - Hydrometeors KW - Surface roughness KW - Radar KW - Tropical Rainfall Measuring Mission (TRMM) KW - Brightness temperature KW - SW 0810:General KW - Q2 09105:Research programmes and expeditions KW - M2 551.578.1:Liquid (551.578.1) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1732825406?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=A+prototype+physical+database+for+passive+microwave+retrievals+of+precipitation+over+the+US+Southern+Great+Plains&rft.au=Ringerud%2C+S%3BKummerow%2C+C+D%3BPeters-Lidard%2C+C+D&rft.aulast=Ringerud&rft.aufirst=S&rft.date=2015-10-01&rft.volume=120&rft.issue=19&rft.spage=10&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2015JD023430 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-11-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Atmospheric precipitations; Emissivity; Microwaves; Surface roughness; Prototypes; Hydrometeors; Soils; Surface radiation temperature; Modelling; Clouds; Satellite data; Roughness effects; Radar observation of hydrometeors; Hydrometeor profiles; Microwave investigation of hydrometeors; Radar; Correlations; Tropical Rainfall Measuring Mission (TRMM); Brightness temperature; Precipitation; Remote Sensing; Channels; Ice; Satellite Technology; Databases; Tetrapropylene-benzene Sulfonate; USA, Great Plains DO - http://dx.doi.org/10.1002/2015JD023430 ER - TY - JOUR T1 - Dynamical, convective, and microphysical control on wintertime distributions of water vapor and clouds in the tropical tropopause layer AN - 1732808003; PQ0002211066 AB - Processes that influence the humidity and cirrus cloud abundance in the Tropical Tropopause Layer (TTL) during boreal winter 2006-2007 are investigated in simulations of clouds along backward trajectories of parcels ending at the 372K potential temperature (100hPa) level in the tropics. Trajectories are calculated using offline calculations of seasonal mean tropical radiative heating rates along with reanalysis temperature and wind data with enhanced wave-driven variability in the TTL. The one-dimensional (vertical) time-dependent cloud microphysical model is initialized with water vapor measurements from the Microwave Limb Sounder and the evolution of clouds along each trajectory is simulated using temperature profiles extracted from reanalysis data and convective cloud top heights estimated from 3-hourly geostationary satellite imagery. Averaged over the tropics, waves dehydrate the 100hPa level by 0.5ppmv, while convection and cloud microphysical processes moisten by 0.3 and 0.7ppmv, respectively. The tropical mean cloud occurrence frequencies in the middle to upper TTL agree well with those based on satellite observations (spatial correlation of 0.8). Waves and convection enhance cloud occurrence at the cold point tropopause by 4% and 2%, respectively. Temporal variability of the heating rates as indicated by the ERA-Interim 6-hourly heating rate fields dehydrates the TTL by 0.4ppmv and decreases the cloud occurrence by 4% because parcels are more likely to encounter the coldest temperatures and dehydrate near the cold point, limiting cloud formation above. The final dehydration locations of parcels, concentrated near the dateline in the tropical Pacific, are insensitive to various model parameters. Key Points * Waves dehydrate whereas convection and microphysics hydrate the 100hPa level * Waves and convection increase cloud occurrence frequency in the TTL * Heating rate variability dehydrates and decreases TTL clouds JF - Journal of Geophysical Research: Atmospheres AU - Ueyama, Rei AU - Jensen, Eric J AU - Pfister, Leonhard AU - Kim, Ji-Eun AD - NASA Ames Research Center, Moffett Field, California, USA. Y1 - 2015/10// PY - 2015 DA - October 2015 SP - 10 EP - 10,500 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 120 IS - 19 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Remote Sensing KW - Convection KW - Variability KW - Water Vapor KW - Tropical tropopause KW - Wave frequency KW - Tropopause KW - Correlations KW - Convection development KW - IS, Tropical Pacific KW - Data reanalysis KW - Microwaves KW - Hydrates KW - Waves KW - Seasonal variability KW - Radiative heating KW - Wind variability KW - Temperature data KW - Modelling KW - Satellite Technology KW - Water vapor in the atmosphere KW - Temperature KW - Humidity KW - Clouds KW - Numerical simulations KW - Tropical environment KW - Convective activity KW - Cloud top heights KW - Temperature profiles KW - Q2 09243:Structure, mechanics and thermodynamics KW - M2 551.558:Vertical Air Motion (551.558) KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1732808003?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=The+second+extended+science+mission+for+the+Lunar+Reconnaissance+Orbiter%3B+status%2C+science+goals%2C+and+data+deliveries&rft.au=Petro%2C+Noah+E%3BKeller%2C+John+W%3BAnonymous&rft.aulast=Petro&rft.aufirst=Noah&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-11-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Convection; Wave frequency; Microwaves; Tropopause; Tropical environment; Hydrates; Humidity; Temperature data; Modelling; Tropical tropopause; Water vapor in the atmosphere; Correlations; Convection development; Data reanalysis; Clouds; Numerical simulations; Convective activity; Seasonal variability; Cloud top heights; Radiative heating; Wind variability; Temperature profiles; Remote Sensing; Satellite Technology; Water Vapor; Variability; Temperature; Waves; IS, Tropical Pacific DO - http://dx.doi.org/10.1002/2015JD023318 ER - TY - JOUR T1 - Mineralogical analysis of the Oppia Quadrangle of asteroid (4) Vesta; evidence for occurrence of moderate-reflectance hydrated minerals AN - 1729850528; 2015-102905 AB - Quadrangle Av-10 "Oppia" is one of five quadrangles that cover the equatorial region of asteroid (4) Vesta. This quadrangle is notable for the broad, spectrally distinct ejecta that extend south of the Oppia crater. These ejecta exhibit the steepest ("reddest") visible spectral slope observed across the asteroid and have distinct color properties as seen in multispectral composite images. Compared to previous works that focused on the composition and nature of unusual ("orange") ejecta found on Vesta, here we take into account a broader area that includes several features of interest, with an emphasis on mineralogy as inferred from data obtained by Dawn's Visible InfraRed mapping spectrometer (VIR). Our analysis shows that the older northern and northeastern part of Av-10 is dominated by howardite-like material, while the younger southwestern part, including Oppia and its ejecta blanket, has a markedly eucritic mineralogy. The association of the mineralogical information with the geologic and topographic contexts allows for the establishment of relationships between the age of the main formations observed in this quadrangle and their composition. A major point of interest in the Oppia quadrangle is the spectral signature of hydrous material seen at the local scale. This material can be mapped by using high-resolution VIR data, combined with multispectral image products from the Dawn Framing Camera (FC) so as to enable a clear correlation with specific geologic features. Hydrated mineral phases studied previously on Vesta generally correlate with low-albedo material delivered by carbonaceous asteroids. However, our analysis shows that the strongest OH signature in Av-10 is found in a unit west of Oppia, previously mapped as "light mantle material" and showing moderate reflectance and a red visible slope. With the available data we cannot yet assess the presence of water in this material. However, we offer a possible explanation for its origin. JF - Icarus AU - Tosi, Federico AU - Frigeri, Alessandro AU - Combe, Jean-Philippe AU - Zambon, Francesca AU - De Sanctis, Maria Cristina AU - Ammannito, Eleonora AU - Longobardo, Andrea AU - Hoffmann, Martin AU - Nathues, A AU - Garry, W B AU - Blewett, D T AU - Pieters, C M AU - Palomba, Ernesto AU - Stephan, K AU - McFadden, Lucy A AU - McSween, H Y AU - Russell, Christopher T AU - Raymond, Carol A Y1 - 2015/10// PY - 2015 DA - October 2015 SP - 129 EP - 149 PB - Elsevier, New York, NY VL - 259 SN - 0019-1035, 0019-1035 KW - silicates KW - near-infrared spectra KW - imagery KW - stony meteorites KW - asteroids KW - mapping KW - Dawn Mission KW - infrared spectra KW - multispectral analysis KW - meteorites KW - pyroxene group KW - mineral composition KW - howardite KW - Oppia Crater KW - spectra KW - color imagery KW - chain silicates KW - water KW - Vesta Asteroid KW - Visible and Infrared Mapping Spectrometer KW - ejecta KW - achondrites KW - hydroxyl ion KW - hydration KW - Framing Camera KW - Oppia Quadrangle KW - reflectance KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1729850528?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Mineralogical+analysis+of+the+Oppia+Quadrangle+of+asteroid+%284%29+Vesta%3B+evidence+for+occurrence+of+moderate-reflectance+hydrated+minerals&rft.au=Tosi%2C+Federico%3BFrigeri%2C+Alessandro%3BCombe%2C+Jean-Philippe%3BZambon%2C+Francesca%3BDe+Sanctis%2C+Maria+Cristina%3BAmmannito%2C+Eleonora%3BLongobardo%2C+Andrea%3BHoffmann%2C+Martin%3BNathues%2C+A%3BGarry%2C+W+B%3BBlewett%2C+D+T%3BPieters%2C+C+M%3BPalomba%2C+Ernesto%3BStephan%2C+K%3BMcFadden%2C+Lucy+A%3BMcSween%2C+H+Y%3BRussell%2C+Christopher+T%3BRaymond%2C+Carol+A&rft.aulast=Tosi&rft.aufirst=Federico&rft.date=2015-10-01&rft.volume=259&rft.issue=&rft.spage=129&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.05.018 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 62 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table, sketch maps N1 - Last updated - 2015-11-05 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - achondrites; asteroids; chain silicates; color imagery; Dawn Mission; ejecta; Framing Camera; howardite; hydration; hydroxyl ion; imagery; infrared spectra; mapping; meteorites; mineral composition; multispectral analysis; near-infrared spectra; Oppia Crater; Oppia Quadrangle; pyroxene group; reflectance; silicates; spectra; stony meteorites; Vesta Asteroid; Visible and Infrared Mapping Spectrometer; water DO - http://dx.doi.org/10.1016/j.icarus.2015.05.018 ER - TY - JOUR T1 - Concentrations of potassium and thorium within Vesta's regolith AN - 1729850520; 2015-102900 AB - The globally-averaged concentrations of radioelements K and Th within Vesta's regolith are determined from gamma ray spectra acquired by Dawn's Gamma Ray and Neutron Detector (GRaND). Spectra measured by GRaND's bismuth germanate (BGO) scintillator, while in close proximity to Vesta, are analyzed. Improvements in data reduction and analysis methods enable detection and quantification of K and Th. Ample precision is achieved using the entire data set acquired by Dawn during 5 months of low-altitude operations. A simple, analytic model, which can be applied to measurements of Vesta and Ceres, is used to determine radioelement concentrations from measured counting rates. Systematic errors in the analysis are evaluated using simulated gamma ray spectra for representative vestan meteorite compositions. Concentrations of K and Th within Vesta's global regolith, measured by GRaND, are consistent with eucrite-rich howardite, and are distinct from most achondrites, all chondrites, and Mars meteorites. The K/Th ratio of Vesta (900 + or - 400) is similar to the average ratio for howardite (approximately 1200). These radioelement data, along with major element ratios determined by nuclear spectroscopy, strongly support the hypothesis that Vesta is the parent body of the HEDs. The depletion of moderately-volatile elements implied by the measured K/Th ratio is consistent with early accretion of Vesta from a hot, incompletely condensed solar nebula and/or, less likely, subsequent removal of volatiles by energetic collisions or degassing of magmas. JF - Icarus AU - Prettyman, T H AU - Yamashita, N AU - Reedy, R C AU - McSween, H Y, Jr AU - Mittlefehldt, D W AU - Hendricks, J S AU - Toplis, M J Y1 - 2015/10// PY - 2015 DA - October 2015 SP - 39 EP - 52 PB - Elsevier, New York, NY VL - 259 SN - 0019-1035, 0019-1035 KW - concentration KW - stony meteorites KW - asteroids KW - Vesta Asteroid KW - data processing KW - alkali metals KW - GRaND instrument KW - Dawn Mission KW - achondrites KW - meteorites KW - volatiles KW - Gamma Ray and Neutron Detector KW - errors KW - howardite KW - metals KW - magmas KW - potassium KW - gamma-ray spectra KW - thorium KW - eucrite KW - spectra KW - actinides KW - regolith KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1729850520?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Concentrations+of+potassium+and+thorium+within+Vesta%27s+regolith&rft.au=Prettyman%2C+T+H%3BYamashita%2C+N%3BReedy%2C+R+C%3BMcSween%2C+H+Y%2C+Jr%3BMittlefehldt%2C+D+W%3BHendricks%2C+J+S%3BToplis%2C+M+J&rft.aulast=Prettyman&rft.aufirst=T&rft.date=2015-10-01&rft.volume=259&rft.issue=&rft.spage=39&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.05.035 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 94 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-11-05 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - achondrites; actinides; alkali metals; asteroids; concentration; data processing; Dawn Mission; errors; eucrite; Gamma Ray and Neutron Detector; gamma-ray spectra; GRaND instrument; howardite; magmas; metals; meteorites; potassium; regolith; spectra; stony meteorites; thorium; Vesta Asteroid; volatiles DO - http://dx.doi.org/10.1016/j.icarus.2015.05.035 ER - TY - JOUR T1 - Composition of the northern regions of Vesta analyzed by the Dawn Mission AN - 1729849420; 2015-102901 AB - The surface composition of the northern regions of Vesta, observed by the Dawn spacecraft, offers the possibility to test several hypotheses related to impact-related processes. We used mostly imaging spectrometry in the visible and near infrared to assess the distribution of mafic lithologies, hydrated components and albedo properties, and use the link with howardite, eucrite and diogenite meteorites (HEDs) to investigate the origin of those materials. We established that Rheasilvia ejecta reached part of the northern regions, and have a diogenitic-rich composition characteristic of the lower crust. Investigations of the antipodes of the two major impact basins (Rheasilvia and Veneneia) did not reveal any correlation between geographic location, geological features and the surface composition. The northern wall of Mamilia crater, which is one of the freshest craters above 22 degrees N, contains relatively pure eucritic-rich, diogenitic-rich and dark, hydrated materials, which are representative of the rest of the northern regions (and most of Vesta), with the exception of an olivine-like component found in Bellicia crater by Ammannito et al. (Ammannito, E. et al. [2013a]. Nature 504(7478), 122-125). We determined that similar types of materials are found in various proportions over a large region, including Bellicia, Arruntia and Pomponia craters, and their origin does not seem to be related to Rheasilvia ejecta. These materials are hydrated, which could indicate an exogenous origin, and not as dark as expected for carbonaceous chondrites, which likely compose the majority of dark hydrated materials on Vesta. Spectral mixture analysis reveals that mixtures of pyroxenes (hypersthene, pigeonite and diopside) could offer an alternative interpretation to olivine in this area. JF - Icarus AU - Combe, Jean-Philippe AU - McCord, Thomas B AU - McFadden, Lucy A AU - Ieva, Simone AU - Tosi, Federico AU - Longobardo, Andrea AU - Frigeri, Alessandro AU - De Sanctis, Maria Cristina AU - Ammannito, Eleonora AU - Ruesch, Ottaviano AU - Palomba, Ernesto AU - Fulchignoni, Marcello AU - Raymond, Carol A AU - Russell, Christopher T Y1 - 2015/10// PY - 2015 DA - October 2015 SP - 53 EP - 71 PB - Elsevier, New York, NY VL - 259 SN - 0019-1035, 0019-1035 KW - silicates KW - albedo KW - Arruntia Crater KW - stony meteorites KW - impact features KW - asteroids KW - Rheasilvia Basin KW - Dawn Mission KW - antipodes KW - meteorites KW - pyroxene group KW - impact basins KW - composition KW - Gamma Ray and neutron Detector KW - chain silicates KW - Vesta Asteroid KW - Visible and Infrared Mapping Spectrometer KW - Veneneia Basin KW - HED meteorites KW - diogenite KW - Mamilia Crater KW - ejecta KW - achondrites KW - Framing Camera KW - Bellicia Crater KW - Pomponia Crater KW - eucrite KW - impact craters KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1729849420?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Composition+of+the+northern+regions+of+Vesta+analyzed+by+the+Dawn+Mission&rft.au=Combe%2C+Jean-Philippe%3BMcCord%2C+Thomas+B%3BMcFadden%2C+Lucy+A%3BIeva%2C+Simone%3BTosi%2C+Federico%3BLongobardo%2C+Andrea%3BFrigeri%2C+Alessandro%3BDe+Sanctis%2C+Maria+Cristina%3BAmmannito%2C+Eleonora%3BRuesch%2C+Ottaviano%3BPalomba%2C+Ernesto%3BFulchignoni%2C+Marcello%3BRaymond%2C+Carol+A%3BRussell%2C+Christopher+T&rft.aulast=Combe&rft.aufirst=Jean-Philippe&rft.date=2015-10-01&rft.volume=259&rft.issue=&rft.spage=53&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.04.026 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 90 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table, sketch maps N1 - Last updated - 2015-11-05 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - achondrites; albedo; antipodes; Arruntia Crater; asteroids; Bellicia Crater; chain silicates; composition; Dawn Mission; diogenite; ejecta; eucrite; Framing Camera; Gamma Ray and neutron Detector; HED meteorites; impact basins; impact craters; impact features; Mamilia Crater; meteorites; Pomponia Crater; pyroxene group; Rheasilvia Basin; silicates; stony meteorites; Veneneia Basin; Vesta Asteroid; Visible and Infrared Mapping Spectrometer DO - http://dx.doi.org/10.1016/j.icarus.2015.04.026 ER - TY - JOUR T1 - Vesta's Pinaria region; original basaltic achondrite material derived form mixing upper and lower crust AN - 1729848954; 2015-102906 AB - Analysis of data from the Dawn mission shows that the Pinaria region of Vesta spanning a portion of the rim of the Rheasilvia basin is bright and anhydrous. Reflectance spectra, absorption band centers, and their variations, cover the range of pyroxenes from diogenite-rich to howardite and eucrite compositions, with no evidence of olivine in this region. By examining band centers and depths of the floor, walls and rims of six major craters in the region, we find a lane of diogenite-rich material next to howardite-eucrite material that does not follow the local topography. The source of this material is not clear and is probably ejecta from post-Rheasilvia impacts. Material of a howardite-eucrite composition originating from beyond the Rheasilvia basin is evident on the western edge of the region. Overall, the Pinaria region exposes the complete range of basaltic achondrite parent body material, with little evidence of contamination of non-basaltic achondrite material. With both high reflectance and low abundance of hydrated material, this region of Vesta may be considered the "Pinaria desert". JF - Icarus AU - McFadden, Lucy A AU - Combe, Jean-Philippe AU - Ammannito, Eleonora AU - Frigeri, Alessandro AU - Stephan, K AU - Longobardo, Andrea AU - Palomba, Ernesto AU - Tosi, Federico AU - Zambon, Francesca AU - Krohn, Katrin AU - De Sanctis, Maria-Cristina AU - Reddy, V AU - Le Corre, Lucille AU - Nathues, A AU - Pieters, C M AU - Prettyman, T H AU - Raymond, Carol A AU - Russell, Christopher T Y1 - 2015/10// PY - 2015 DA - October 2015 SP - 150 EP - 161 PB - Elsevier, New York, NY VL - 259 SN - 0019-1035, 0019-1035 KW - silicates KW - Pinaria Quadrangle KW - albedo KW - stony meteorites KW - asteroids KW - Rheasilvia Basin KW - optical spectra KW - olivine group KW - Dawn Mission KW - infrared spectra KW - meteorites KW - pyroxene group KW - howardite KW - olivine KW - orthosilicates KW - spectra KW - basaltic composition KW - lower crust KW - chain silicates KW - upper crust KW - Vesta Asteroid KW - diogenite KW - achondrites KW - nesosilicates KW - eucrite KW - reflectance KW - Pinaria Crater KW - crust KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1729848954?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Vesta%27s+Pinaria+region%3B+original+basaltic+achondrite+material+derived+form+mixing+upper+and+lower+crust&rft.au=McFadden%2C+Lucy+A%3BCombe%2C+Jean-Philippe%3BAmmannito%2C+Eleonora%3BFrigeri%2C+Alessandro%3BStephan%2C+K%3BLongobardo%2C+Andrea%3BPalomba%2C+Ernesto%3BTosi%2C+Federico%3BZambon%2C+Francesca%3BKrohn%2C+Katrin%3BDe+Sanctis%2C+Maria-Cristina%3BReddy%2C+V%3BLe+Corre%2C+Lucille%3BNathues%2C+A%3BPieters%2C+C+M%3BPrettyman%2C+T+H%3BRaymond%2C+Carol+A%3BRussell%2C+Christopher+T&rft.aulast=McFadden&rft.aufirst=Lucy&rft.date=2015-10-01&rft.volume=259&rft.issue=&rft.spage=150&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.07.003 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 55 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table, sketch maps N1 - Last updated - 2015-11-05 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - achondrites; albedo; asteroids; basaltic composition; chain silicates; crust; Dawn Mission; diogenite; eucrite; howardite; infrared spectra; lower crust; meteorites; nesosilicates; olivine; olivine group; optical spectra; orthosilicates; Pinaria Crater; Pinaria Quadrangle; pyroxene group; reflectance; Rheasilvia Basin; silicates; spectra; stony meteorites; upper crust; Vesta Asteroid DO - http://dx.doi.org/10.1016/j.icarus.2015.07.003 ER - TY - NEWS T1 - Total Eclipse of the Harvest Moon AN - 1717957941 JF - UPI Space Daily AU - Staff Writers for NASA Science News Y1 - 2015/10/01/ PY - 2015 DA - 2015 Oct 01 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1717957941?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=Total+Eclipse+of+the+Harvest+Moon&rft.au=Staff+Writers+for+NASA+Science+News&rft.aulast=Staff+Writers+for+NASA+Science+News&rft.aufirst=&rft.date=2015-10-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-10-01 ER - TY - JOUR T1 - Air pollution or global warming: Attribution of extreme precipitation changes in eastern China-Comments on "Trends of extreme precipitation in Eastern China and their possible causes" AN - 1712772187; PQ0001920572 AB - The recent study "Trends of Extreme Precipitation in Eastern China and Their Possible Causes" attributed the observed decrease/increase of light/heavy precipitation in eastern China to global warming rather than the regional aerosol effects. However, there exist compelling evidence from previous long-term observations and numerical modeling studies, suggesting that anthropogenic pollution is closely linked to the recent changes in precipitation intensity because of considerably modulated cloud physical properties by aerosols in eastern China. Clearly, a quantitative assessment of the aerosol and greenhouse effects on the regional scale is required to identify the primary cause for the extreme precipitation changes. JF - Advances in Atmospheric Sciences AU - Wang, Yuan AD - Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, 91109, USA, yuan.wang@jpl.nasa.gov Y1 - 2015/10// PY - 2015 DA - October 2015 SP - 1444 EP - 1446 PB - China Ocean Press, 8 Dahuisi Beijing 100081 China VL - 32 IS - 10 SN - 0256-1530, 0256-1530 KW - Sustainability Science Abstracts; Pollution Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Heavy precipitation KW - Atmospheric sciences KW - Rainfall KW - Climate change KW - Anthropogenic factors KW - Precipitation intensities KW - Numerical models KW - Assessments KW - Physical Properties KW - Precipitation Intensity KW - Abiotic factors KW - Air Pollution KW - Aerosols KW - Mathematical models KW - Greenhouse effect KW - Precipitation KW - Global Warming KW - Greenhouses KW - Light effects KW - Clouds KW - Air pollution KW - Physical properties KW - Global warming KW - China, People's Rep. KW - Q2 09243:Structure, mechanics and thermodynamics KW - P 0000:AIR POLLUTION KW - M3 1010:Issues in Sustainable Development KW - SW 0810:General KW - M2 556.12:Precipitation (556.12) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1712772187?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Advances+in+Atmospheric+Sciences&rft.atitle=Air+pollution+or+global+warming%3A+Attribution+of+extreme+precipitation+changes+in+eastern+China-Comments+on+%22Trends+of+extreme+precipitation+in+Eastern+China+and+their+possible+causes%22&rft.au=Wang%2C+Yuan&rft.aulast=Wang&rft.aufirst=Yuan&rft.date=2015-10-01&rft.volume=32&rft.issue=10&rft.spage=1444&rft.isbn=&rft.btitle=&rft.title=Advances+in+Atmospheric+Sciences&rft.issn=02561530&rft_id=info:doi/10.1007%2Fs00376-015-5109-4 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-09-01 N1 - Number of references - 21 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Physical properties; Air pollution; Aerosols; Atmospheric sciences; Climate change; Anthropogenic factors; Greenhouse effect; Abiotic factors; Light effects; Clouds; Heavy precipitation; Numerical models; Global warming; Precipitation intensities; Precipitation; Mathematical models; Rainfall; Air Pollution; Assessments; Physical Properties; Precipitation Intensity; Global Warming; Greenhouses; China, People's Rep. DO - http://dx.doi.org/10.1007/s00376-015-5109-4 ER - TY - JOUR T1 - Evidence for the episodic erosion of the Medusae Fossae Formation preserved within the youngest volcanic province on Mars AN - 1784737558; 2016-037516 AB - We use orbital SHAllow RADar (SHARAD) sounder data to three-dimensionally visualize the subsurface structure of Elysium Planitia, the youngest volcanic province on Mars. Our results reveal an emplacement history consisting of multiple groups of overlapping lava flow units, originating from different sources. The uniquely complex "radar stratigraphy" of Elysium Planitia, relative to other volcanic regions, requires a distinct mechanism to generate the numerous reflectors observed in SHARAD data. Sedimentary deposits interbedded with successive batches of lava flows could account for the elaborate pattern of reflectors. We infer that widespread, rapidly emplaced material sourced from the enigmatic Medusae Fossae Formation (MFF) creates these sedimentary layers. This implies that episodes of atmospheric activity, perhaps linked with the obliquity of Mars, periodically erode and redeposit material from the MFF across a large region. Abstract Copyright (2015), . American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Morgan, Gareth A AU - Campbell, Bruce A AU - Carter, Lynn M AU - Plaut, Jeffrey J Y1 - 2015/09/28/ PY - 2015 DA - 2015 Sep 28 SP - 7336 EP - 7342 PB - American Geophysical Union, Washington, DC VL - 42 IS - 18 SN - 0094-8276, 0094-8276 KW - volcanic rocks KW - erosion KW - igneous rocks KW - Elysium Mons KW - Mars KW - erosion features KW - terrestrial planets KW - planets KW - Medusae Fossae Formation KW - Elysium KW - surface features KW - Elysium Planitia KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1784737558?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=Evidence+for+the+episodic+erosion+of+the+Medusae+Fossae+Formation+preserved+within+the+youngest+volcanic+province+on+Mars&rft.au=Morgan%2C+Gareth+A%3BCampbell%2C+Bruce+A%3BCarter%2C+Lynn+M%3BPlaut%2C+Jeffrey+J&rft.aulast=Morgan&rft.aufirst=Gareth&rft.date=2015-09-28&rft.volume=42&rft.issue=18&rft.spage=7336&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL065017 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 22 N1 - PubXState - DC N1 - Document feature - illus. incl. sketch map N1 - Last updated - 2016-04-28 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - Elysium; Elysium Mons; Elysium Planitia; erosion; erosion features; igneous rocks; Mars; Medusae Fossae Formation; planets; surface features; terrestrial planets; volcanic rocks DO - http://dx.doi.org/10.1002/2015GL065017 ER - TY - JOUR T1 - The meteoroid stream of Comet Encke at Mercury; implications for MErcury Surface, Space ENvironment, GEochemistry, and Ranging observations of the exosphere AN - 1784737467; 2016-037513 AB - We test the hypothesis that an annually repeatable Ca emission excess in Mercury's exosphere at a True Anomaly Angle (TAA) of 25 degrees + or - 5 degrees is due to particles from comet 2P/Encke impacting the surface. By simulating the dynamical evolution of Encke particles under planetary perturbations and Poynting-Robertson drag, we find that millimeter-sized grains ejected 1-2 X 10 (super 4) years ago encounter Mercury at TAA = 350 degrees -30 degrees . The timing of the excess emission is consistent with a major dust release episode < or =20 kyr ago, possibly due to Encke progenitor breakup. The emission mechanism is likely the direct injection of impact-liberated Ca into sunlight rather than nightside surface adsorption for subsequent release at dawn. The timing of dust release from the comet depends on this mechanism; a 10 kyr age is implied by the direct-injection scenario. Abstract Copyright (2015), . American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Christou, Apostolos A AU - Killen, Rosemary M AU - Burger, Matthew H Y1 - 2015/09/28/ PY - 2015 DA - 2015 Sep 28 SP - 7311 EP - 7318 PB - American Geophysical Union, Washington, DC VL - 42 IS - 18 SN - 0094-8276, 0094-8276 KW - terrestrial planets KW - programs KW - planets KW - comets KW - Mercury Planet KW - meteoroids KW - MESSENGER Mission KW - geochemistry KW - Comet Encke KW - exploration KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1784737467?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=The+meteoroid+stream+of+Comet+Encke+at+Mercury%3B+implications+for+MErcury+Surface%2C+Space+ENvironment%2C+GEochemistry%2C+and+Ranging+observations+of+the+exosphere&rft.au=Christou%2C+Apostolos+A%3BKillen%2C+Rosemary+M%3BBurger%2C+Matthew+H&rft.aulast=Christou&rft.aufirst=Apostolos&rft.date=2015-09-28&rft.volume=42&rft.issue=18&rft.spage=7311&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL065361 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 35 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2016-04-28 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - Comet Encke; comets; exploration; geochemistry; Mercury Planet; MESSENGER Mission; meteoroids; planets; programs; terrestrial planets DO - http://dx.doi.org/10.1002/2015GL065361 ER - TY - JOUR T1 - A solar escalator on Mars; self-lifting of dust layers by radiative heating AN - 1784737369; 2016-037514 AB - Dust layers detected in the atmosphere of Mars by the light detection and ranging (LIDAR) instrument on the Phoenix Mars mission are explained using an atmospheric general circulation model. The layers were traced back to observed dust storm activity near the edge of the north polar ice cap where simulated surface winds exceeded the threshold for dust lifting by saltation. Heating of the atmospheric dust by solar radiation caused buoyant instability and mixing across the top of the planetary boundary layer (PBL). Differential advection by wind shear created detached dust layers above the PBL that ascended due to radiative heating and arrived at the Phoenix site at heights corresponding to the LIDAR observations. The self-lifting of the dust layers is similar to the "solar escalator" mechanism for aerosol layers in the Earth's stratosphere. Abstract Copyright (2015), . American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Daerden, F AU - Whiteway, J A AU - Neary, L AU - Komguem, L AU - Lemmon, M T AU - Heavens, N G AU - Cantor, B A AU - Hebrard, E AU - Smith, M D Y1 - 2015/09/28/ PY - 2015 DA - 2015 Sep 28 SP - 7319 EP - 7326 PB - American Geophysical Union, Washington, DC VL - 42 IS - 18 SN - 0094-8276, 0094-8276 KW - terrestrial planets KW - planets KW - general circulation models KW - lidar methods KW - laser methods KW - clastic sediments KW - dust KW - solar radiation KW - sediments KW - atmosphere KW - Mars KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1784737369?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=A+solar+escalator+on+Mars%3B+self-lifting+of+dust+layers+by+radiative+heating&rft.au=Daerden%2C+F%3BWhiteway%2C+J+A%3BNeary%2C+L%3BKomguem%2C+L%3BLemmon%2C+M+T%3BHeavens%2C+N+G%3BCantor%2C+B+A%3BHebrard%2C+E%3BSmith%2C+M+D&rft.aulast=Daerden&rft.aufirst=F&rft.date=2015-09-28&rft.volume=42&rft.issue=18&rft.spage=7319&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL064892 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 36 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2016-04-28 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - atmosphere; clastic sediments; dust; general circulation models; laser methods; lidar methods; Mars; planets; sediments; solar radiation; terrestrial planets DO - http://dx.doi.org/10.1002/2015GL064892 ER - TY - JOUR T1 - Synthesis of Fluorophore-Doped Polystyrene Microspheres: Seed Material for Airflow Sensing. AN - 1716257107; 26322378 AB - Kiton red 620 (KR620) doped polystyrene latex microspheres (PSLs) were synthesized via soap-free emulsion polymerization to be utilized as a relatively nontoxic, fluorescent seed material for airflow characterization experiments. Poly(styrene-co-styrenesulfonate) was used as the PSL matrix to promote KR620 incorporation. Additionally, a bicarbonate buffer and poly(diallyldimethylammonium chloride), polyD, cationic polymer were added to the reaction solution to stabilize the pH and potentially influence the electrostatic interactions between the PSLs and dye molecules. A design of experiments (DOE) approach was used to efficiently investigate the variation of these materials. Using a 4-factor, 2-level response surface design with a center point, a series of experiments were performed to determine the dependence of these factors on particle diameter, diameter size distribution, fluorescent emission intensity, and KR620 retention. Using statistical analysis, the factors and factor interactions that most significantly affect the outputs were identified. These particles enabled velocity measurements to be made much closer to walls and surfaces than previously. Based on these results, KR620-doped PSLs may be utilized to simultaneously measure the velocity and mixing concentration, among other airflow parameters, in complex flows. JF - ACS applied materials & interfaces AU - Wohl, Christopher J AU - Kiefer, Jacob M AU - Petrosky, Brian J AU - Tiemsin, Pacita I AU - Lowe, K Todd AU - Maisto, Pietro M F AU - Danehy, Paul M AD - NASA Langley Research Center , Hampton, Virginia 23681, United States. ; NASA Langley Research Summer Scholars (LARSS), NASA Langley Research Center , Hampton, Virginia 23681, United States. ; Department of Aerospace and Ocean Engineering, Virginia Polytechnic Institute and State University , Blacksburg, Virginia 24060, United States. Y1 - 2015/09/23/ PY - 2015 DA - 2015 Sep 23 SP - 20714 EP - 20725 VL - 7 IS - 37 KW - particle image velocimetry (PIV) KW - fluorescent particles KW - PSLs KW - emulsifier-free emulsion polymerization KW - kiton red 620 KW - design of experiments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1716257107?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=ACS+applied+materials+%26+interfaces&rft.atitle=Synthesis+of+Fluorophore-Doped+Polystyrene+Microspheres%3A+Seed+Material+for+Airflow+Sensing.&rft.au=Wohl%2C+Christopher+J%3BKiefer%2C+Jacob+M%3BPetrosky%2C+Brian+J%3BTiemsin%2C+Pacita+I%3BLowe%2C+K+Todd%3BMaisto%2C+Pietro+M+F%3BDanehy%2C+Paul+M&rft.aulast=Wohl&rft.aufirst=Christopher&rft.date=2015-09-23&rft.volume=7&rft.issue=37&rft.spage=20714&rft.isbn=&rft.btitle=&rft.title=ACS+applied+materials+%26+interfaces&rft.issn=1944-8252&rft_id=info:doi/10.1021%2Facsami.5b05584 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-01-08 N1 - Date created - 2015-09-23 N1 - Date revised - 2017-01-14 N1 - Last updated - 2017-01-19 DO - http://dx.doi.org/10.1021/acsami.5b05584 ER - TY - JOUR T1 - The physical characterization of the potentially hazardous asteroid 2004 Bl86; a fragment of a differentiated asteroid AN - 1832662897; 762121-15 AB - The physical characterization of potentially hazardous asteroids (PHAs) is important for impact hazard assessment and evaluating mitigation options. Close flybys of PHAs provide an opportunity to study their surface photometric and spectral properties that enable the identification of their source regions in the main asteroid belt. We observed PHA (357439) 2004 BL86 during a close flyby of the Earth at a distance of 1.2 million km (0.0080 AU) on 2015 January 26, with an array of ground-based telescopes to constrain its photometric and spectral properties. Lightcurve observations showed that the asteroid was a binary and subsequent radar observations confirmed the binary nature and gave a primary diameter of 300 m and a secondary diameter of 50�100 m. Our photometric observations were used to derive the phase curve of 2004 BL86 in the V-band. Two different photometric functions were fitted to this phase curve, the IAU H�G model and the Shevchenko model. From the fit of the H�G function we obtained an absolute magnitude of H = 19.51 + or - 0.02 and a slope parameter of G = 0.34 + or - 0.02. The Shevchenko function yielded an absolute magnitude of H = 19.03 + or - 0.07 and a phase coefficient b = 0.0225 + or - 0.0006. The phase coefficient was used to calculate the geometric albedo (Ag) using the relationship found by Belskaya & Schevchenko, obtaining a value of Ag = 40% + or - 8% in the V-band. With the geometric albedo and the absolute magnitudes derived from the H�G and the Shevchenko functions we calculated the diameter (D) of 2004 BL86, obtaining D = 263 + or - 26 and D = 328 + or - 35 m, respectively. 2004 BL86 spectral band parameters and pyroxene chemistry are consistent with non-cumulate eucrite meteorites. A majority of these meteorites are derived from Vesta and are analogous with surface lava flows on a differentiated parent body. A non-diagnostic spectral curve match using the Modeling for Asteroids tool yielded a best-match with non-cumulate eucrite Bereba. Three other near-Earth asteroids (1993 VW, 1998 KK17, and 2000 XH44) that were observed by Burbine et al. also have spectral properties similar to 2004 BL86. The presence of eucrites with anomalous oxygen isotope ratios compared to the howardites, eucrites, and diogenites meteorites from Vesta suggests the possible presence of multiple differentiated bodies in the inner main belt or the contamination of Vesta�s surface with exogenic material. The spectral properties of both anomalous and Vestan eucrites are degenerate, making it difficult to identify the parent bodies of anomalous eucrites in the main belt and the NEO population using remote sensing. This makes it difficult to link 2004 BL86 directly to Vesta, although the Vesta family is the largest contributor of V-types to near-Earth space. Copyright (Copyright) 2015. The American Astronomical Society. All rights reserved. JF - The Astrophysical Journal AU - Reddy, Vishnu AU - Gary, Bruce L AU - Sanchez, Juan A AU - Takir, Driss AU - Thomas, Cristina A AU - Hardersen, Paul S AU - Ogmen, Yenal AU - Benni, Paul AU - Kaye, Thomas G AU - Gregorio, Joao AU - Garlitz, Joe AU - Polishook, David AU - Corre, Lucille Le AU - Nathues, Andreas Y1 - 2015/09/20/ PY - 2015 DA - 2015 Sep 20 EP - Paper no. 65 PB - IOP Publishing for American Astronomical Society, Bristol VL - 811 IS - 1 SN - 0004-637X, 0004-637X KW - silicates KW - albedo KW - near-infrared spectra KW - stony meteorites KW - phase curve KW - asteroids KW - near-Earth asteroids KW - 2004 B186 Asteroid KW - meteorites KW - photometry KW - pyroxene group KW - howardite KW - lightcurve KW - spectra KW - chain silicates KW - near-Earth objects KW - Vesta Asteroid KW - telescope methods KW - parent bodies KW - HED meteorites KW - differentiation KW - diogenite KW - binary asteroids KW - achondrites KW - non-cumulate eucrites KW - eucrite KW - V-type asteroids KW - remote sensing KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832662897?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Astrophysical+Journal&rft.atitle=The+physical+characterization+of+the+potentially+hazardous+asteroid+2004+Bl86%3B+a+fragment+of+a+differentiated+asteroid&rft.au=Reddy%2C+Vishnu%3BGary%2C+Bruce+L%3BSanchez%2C+Juan+A%3BTakir%2C+Driss%3BThomas%2C+Cristina+A%3BHardersen%2C+Paul+S%3BOgmen%2C+Yenal%3BBenni%2C+Paul%3BKaye%2C+Thomas+G%3BGregorio%2C+Joao%3BGarlitz%2C+Joe%3BPolishook%2C+David%3BCorre%2C+Lucille+Le%3BNathues%2C+Andreas&rft.aulast=Reddy&rft.aufirst=Vishnu&rft.date=2015-09-20&rft.volume=811&rft.issue=1&rft.spage=&rft.isbn=&rft.btitle=&rft.title=The+Astrophysical+Journal&rft.issn=0004637X&rft_id=info:doi/10.1088%2F0004-637X%2F811%2F1%2F65 L2 - http://iopscience.iop.org/0004-637X LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data supplied by IOP Publishing Ltd., London, United Kingdom N1 - Number of references - 30 N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - 2004 B186 Asteroid; achondrites; albedo; asteroids; binary asteroids; chain silicates; differentiation; diogenite; eucrite; HED meteorites; howardite; lightcurve; meteorites; near-Earth asteroids; near-Earth objects; near-infrared spectra; non-cumulate eucrites; parent bodies; phase curve; photometry; pyroxene group; remote sensing; silicates; spectra; stony meteorites; telescope methods; V-type asteroids; Vesta Asteroid DO - http://dx.doi.org/10.1088/0004-637X/811/1/65 ER - TY - JOUR T1 - The fractured Moon; production and saturation of porosity in the lunar highlands from impact cratering AN - 1773797071; 2016-024834 AB - We have analyzed the Bouguer anomaly (BA) of nearly equal 1200 complex craters in the lunar highlands from Gravity Recovery and Interior Laboratory observations. The BA of these craters is generally negative, though positive BA values are observed, particularly for smaller craters. Crater BA values scale inversely with crater diameter, quantifying how larger impacts produce more extensive fracturing and dilatant bulking. The Bouguer anomaly of craters larger than 93 (super +47) (sub -19) km in diameter is independent of crater size, indicating that there is a limiting depth to impact-generated porosity, presumably from pore collapse associated with either overburden pressure or viscous flow. Impact-generated porosity of the bulk lunar crust is likely in a state of equilibrium for craters smaller than nearly equal 30 km in diameter, consistent with an nearly equal 8 km thick lunar megaregolith, whereas the gravity signature of larger craters is still preserved and provides new insight into the cratering record of even the oldest lunar surfaces. Abstract Copyright (2015), American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Soderblom, Jason M AU - Evans, Alexander J AU - Johnson, Brandon C AU - Melosh, H Jay AU - Miljkovic, Katarina AU - Phillips, Roger J AU - Andrews-Hanna, Jeffrey C AU - Bierson, Carver J AU - Head, James W, III AU - Milbury, Colleen AU - Neumann, Gregory A AU - Nimmo, Francis AU - Smith, David E AU - Solomon, Sean C AU - Sori, Michael M AU - Wieczorek, Mark A AU - Zuber, Maria T Y1 - 2015/09/16/ PY - 2015 DA - 2015 Sep 16 SP - 6939 EP - 6944 PB - American Geophysical Union, Washington, DC VL - 42 IS - 17 SN - 0094-8276, 0094-8276 KW - gravity anomalies KW - topography KW - impact features KW - Moon KW - surface features KW - Bouguer anomalies KW - impact craters KW - lunar highlands KW - regolith KW - porosity KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773797071?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=The+fractured+Moon%3B+production+and+saturation+of+porosity+in+the+lunar+highlands+from+impact+cratering&rft.au=Soderblom%2C+Jason+M%3BEvans%2C+Alexander+J%3BJohnson%2C+Brandon+C%3BMelosh%2C+H+Jay%3BMiljkovic%2C+Katarina%3BPhillips%2C+Roger+J%3BAndrews-Hanna%2C+Jeffrey+C%3BBierson%2C+Carver+J%3BHead%2C+James+W%2C+III%3BMilbury%2C+Colleen%3BNeumann%2C+Gregory+A%3BNimmo%2C+Francis%3BSmith%2C+David+E%3BSolomon%2C+Sean+C%3BSori%2C+Michael+M%3BWieczorek%2C+Mark+A%3BZuber%2C+Maria+T&rft.aulast=Soderblom&rft.aufirst=Jason&rft.date=2015-09-16&rft.volume=42&rft.issue=17&rft.spage=6939&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL065022 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 34 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2016-03-17 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - Bouguer anomalies; gravity anomalies; impact craters; impact features; lunar highlands; Moon; porosity; regolith; surface features; topography DO - http://dx.doi.org/10.1002/2015GL065022 ER - TY - JOUR T1 - Giant-planet chemistry; ammonium hydrosulfide (NH (sub 4) SH), its IR spectra and thermal and radiolytic stabilities AN - 1729845321; 2015-102344 AB - Here we present our recent studies of proton-irradiated and unirradiated ammonium hydrosulfide, NH (sub 4) SH, a compound predicted to be an important tropospheric cloud component of Jupiter and other giant planets. We irradiated both crystalline and amorphous NH (sub 4) SH at 10-160 K and used IR spectroscopy to observe and identify reaction products in the ice, specifically NH3 and long-chained sulfur-containing ions. Crystalline NH4SH was amorphized during irradiation at all temperatures studied with the rate being the fastest at the lowest temperatures. Irradiation of amorphous NH4SH at approximately 10-75 K showed that 60-80% of the NH (super 4+) remained when equilibrium was reached, and that NH (sub 4) SH destruction rates were relatively constant within this temperature range. Irradiations at higher temperatures produced different dose dependence and were accompanied by pressure outbursts that, in some cases, fractured the ice. The thermal stability of irradiated NH (sub 4) SH was found to be greater than that of unirradiated NH (sub 4) SH, suggesting that an irradiated giant-planet cloud precipitate can exist at temperatures and altitudes not previously considered. JF - Icarus AU - Loeffler, Mark J AU - Hudson, Reggie L AU - Chanover, Nancy J AU - Simon, Amy A Y1 - 2015/09/15/ PY - 2015 DA - 2015 Sep 15 SP - 181 EP - 191 PB - Elsevier, New York, NY VL - 258 SN - 0019-1035, 0019-1035 KW - clouds KW - experimental studies KW - irradiation KW - amorphous materials KW - altitude KW - Jupiter KW - stability KW - mass spectra KW - cosmochemistry KW - troposphere KW - crystallinity KW - temperature KW - infrared spectra KW - giant planets KW - planets KW - ammonium hydrosulfide KW - ice KW - low temperature KW - spectra KW - radiolysis KW - outer planets KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1729845321?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Giant-planet+chemistry%3B+ammonium+hydrosulfide+%28NH+%28sub+4%29+SH%29%2C+its+IR+spectra+and+thermal+and+radiolytic+stabilities&rft.au=Loeffler%2C+Mark+J%3BHudson%2C+Reggie+L%3BChanover%2C+Nancy+J%3BSimon%2C+Amy+A&rft.aulast=Loeffler&rft.aufirst=Mark&rft.date=2015-09-15&rft.volume=258&rft.issue=&rft.spage=181&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.06.015 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 59 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2015-11-05 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - altitude; ammonium hydrosulfide; amorphous materials; clouds; cosmochemistry; crystallinity; experimental studies; giant planets; ice; infrared spectra; irradiation; Jupiter; low temperature; mass spectra; outer planets; planets; radiolysis; spectra; stability; temperature; troposphere DO - http://dx.doi.org/10.1016/j.icarus.2015.06.015 ER - TY - JOUR T1 - Testing the early Mars H (sub 2) -CO (sub 2) greenhouse hypothesis with a 1-D photochemical model AN - 1729845131; 2015-102350 AB - A recent study by Ramirez et al. (Ramirez, R.M. et al. [2014]. Nat. Geosci. 7(1), 59-63. http://www.nature.com/doifinder/10.1038/ngeo2000 (accessed 16.09.14)) demonstrated that an atmosphere with 1.3-4 bar of CO2 and H2O, in addition to 5-20% H (sub 2) , could have raised the mean annual and global surface temperature of early Mars above the freezing point of water. Such warm temperatures appear necessary to generate the rainfall (or snowfall) amounts required to carve the ancient martian valleys. Here, we use our best estimates for early martian outgassing rates, along with a 1-D photochemical model, to assess the conversion efficiency of CO, CH (sub 4) , and H (sub 2) S to CO (sub 2) , SO (sub 2) , and H (sub 2) . Our outgassing estimates assume that Mars was actively recycling volatiles between its crust and interior, as Earth does today. H (sub 2) production from serpentinization and deposition of banded iron-formations is also considered. Under these assumptions, maintaining an H (sub 2) concentration of approximately 1-2% by volume is achievable, but reaching 5% H (sub 2) requires additional H (sub 2) sources or a slowing of the hydrogen escape rate below the diffusion limit. If the early martian atmosphere was indeed H (sub 2) -rich, we might be able to see evidence of this in the rock record. The hypothesis proposed here is consistent with new data from the Curiosity Rover, which show evidence for a long-lived lake in Gale Crater near Mt. Sharp. It is also consistent with measured oxygen fugacities of martian meteorites, which show evidence for progressive mantle oxidation over time. JF - Icarus AU - Batalha, Natasha AU - Domagal-Goldman, Shawn D AU - Ramirez, Ramses AU - Kasting, James F Y1 - 2015/09/15/ PY - 2015 DA - 2015 Sep 15 SP - 337 EP - 349 PB - Elsevier, New York, NY VL - 258 SN - 0019-1035, 0019-1035 KW - serpentinization KW - one-dimensional models KW - aliphatic hydrocarbons KW - mantle KW - Mars KW - paleoclimatology KW - metasomatism KW - iron KW - Gale Crater KW - carbon dioxide KW - volcanism KW - Curiosity Rover KW - greenhouse effect KW - water KW - sulfur dioxide KW - methane KW - oxidation KW - photochemistry KW - hydrogen sulfide KW - alkanes KW - gases KW - terrestrial planets KW - planets KW - carbon monoxide KW - organic compounds KW - metals KW - hydrogen KW - hydrocarbons KW - sulfur KW - greenhouse gases KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1729845131?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Testing+the+early+Mars+H+%28sub+2%29+-CO+%28sub+2%29+greenhouse+hypothesis+with+a+1-D+photochemical+model&rft.au=Batalha%2C+Natasha%3BDomagal-Goldman%2C+Shawn+D%3BRamirez%2C+Ramses%3BKasting%2C+James+F&rft.aulast=Batalha&rft.aufirst=Natasha&rft.date=2015-09-15&rft.volume=258&rft.issue=&rft.spage=337&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.06.016 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 85 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-11-05 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; carbon dioxide; carbon monoxide; Curiosity Rover; Gale Crater; gases; greenhouse effect; greenhouse gases; hydrocarbons; hydrogen; hydrogen sulfide; iron; mantle; Mars; metals; metasomatism; methane; one-dimensional models; organic compounds; oxidation; paleoclimatology; photochemistry; planets; serpentinization; sulfur; sulfur dioxide; terrestrial planets; volcanism; water DO - http://dx.doi.org/10.1016/j.icarus.2015.06.016 ER - TY - JOUR T1 - Laboratory reflectance spectra of clay minerals mixed with Mars analog materials; toward enabling quantitative clay abundances from Mars spectra AN - 1729843736; 2015-102357 AB - Quantitative estimates of clay minerals on the martian surface, via remote sensing observations, provide constraints on activity, timing, duration, and extent of aqueous processes and the geochemical environment in martian history. We describe an analytical study to begin enabling quantitative estimates of phyllosilicates when mixed with martian analog materials. We characterize the chemistry, mineralogy, particle size distribution, and reflectance spectra of the end-member materials: saponite, montmorillonite, pyroxene, and palagonitic soil. Reflectance spectra were obtained for physical mixtures of saponite and montmorillonite with pyroxene, and saponite with palagonitic soil. We analyzed the diagnostic phyllosilicate spectral signatures in the 2.2-2.4 mu m wavelength region in detail for the mixtures. This involved fitting the observed approximately 2.3 or approximately 2.2 mu m band depth, associated with the presence of saponite and montmorillonite, respectively, as a function of the abundance of these materials in the mixtures. Based upon the band depth of the spectral features we find that 3-5 wt.% of the clay minerals in the mixture with pyroxene can be recognized and at 25 wt.% their presence is indisputable in the mixtures. When the saponite is mixed with the lower albedo palagonitic soil, its presence is clearly distinguishable via the 1.4 and 2.3 mu m features at 25 wt.% abundance. These relationships, between abundance and band depth, provide an ability to quantitatively address the amount of these materials in mixtures. The trends described here provide guidance for estimating the presence of phyllosilicates in matrices on the martian surface. JF - Icarus AU - Roush, Ted L AU - Bishop, Janice L AU - Brown, Adrian J AU - Blake, David F AU - Bristow, Thomas F Y1 - 2015/09/15/ PY - 2015 DA - 2015 Sep 15 SP - 454 EP - 466 PB - Elsevier, New York, NY VL - 258 SN - 0019-1035, 0019-1035 KW - silicates KW - albedo KW - volcanic rocks KW - glasses KW - X-ray diffraction data KW - igneous rocks KW - Mars KW - laboratory studies KW - size distribution KW - pyroxene group KW - mineral composition KW - quantitative analysis KW - mixing KW - chemical composition KW - montmorillonite KW - chain silicates KW - CRISM KW - saponite KW - grain size KW - palagonite KW - clay minerals KW - terrestrial planets KW - planets KW - natural analogs KW - sheet silicates KW - reflectance KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1729843736?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=The+solar+energetic+particle+experiment+on+MAVEN%3B+first+results&rft.au=Larson%2C+Davin+E%3BLillis%2C+R+J%3BDunn%2C+P+A%3BRahmati%2C+A%3BCravens%2C+T+E%3BHatch%2C+K%3BRobinson%2C+M%3BGlaser%2C+D%3BChen%2C+J%3BCurtis%2C+D+W%3BTiu%2C+C%3BLin%2C+R+P%3BLuhman%2C+J+G%3BMcFadden%2C+J+P%3BConnerney%2C+J%3BHalekas%2C+J%3BJakosky%2C+B+M%3BAnonymous&rft.aulast=Larson&rft.aufirst=Davin&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 75 N1 - PubXState - NY N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2015-11-05 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - albedo; chain silicates; chemical composition; clay minerals; CRISM; glasses; grain size; igneous rocks; laboratory studies; Mars; mineral composition; mixing; montmorillonite; natural analogs; palagonite; planets; pyroxene group; quantitative analysis; reflectance; saponite; sheet silicates; silicates; size distribution; terrestrial planets; volcanic rocks; X-ray diffraction data DO - http://dx.doi.org/10.1016/j.icarus.2015.06.035 ER - TY - JOUR T1 - Mars Orbiter Camera climatology of textured dust storms AN - 1729843659; 2015-102332 AB - We report the climatology of "textured dust storms", those dust storms that have visible structure on their cloud tops that are indicative of active dust lifting, as observed in Mars Daily Global Maps produced from Mars Orbiter Camera wide-angle images. Textured dust storms predominantly occur in the equinox seasons while both solstice periods experience a planet-wide "pause" in textured dust storm activity. These pauses correspond to concurrent decreases in global atmospheric dust opacity. Textured dust storms most frequently occur in Acidalia Planitia, Chryse Planitia, Arcadia Planitia, and Hellas basin. To examine the nature of the link between textured dust storms and atmospheric dust opacity, we compare the textured dust storm climatology with a record of atmospheric dust opacity and find a peak global correlation coefficient of approximately 0.5 with a lag of 20-40 degrees in solar longitude in the opacity compared to the solar climatology. This implies that textured dust storms observed at 1400 local time by MOC are responsible for a large fraction of atmospheric dust opacity and that other mechanisms (e.g., dust devil lifting or storm-scale lifting not observed in this study) may supply a comparable amount of dust. JF - Icarus AU - Guzewich, Scott D AU - Toigo, Anthony D AU - Kulowski, Laura AU - Wang, Huiqun Y1 - 2015/09/15/ PY - 2015 DA - 2015 Sep 15 SP - 1 EP - 13 PB - Elsevier, New York, NY VL - 258 SN - 0019-1035, 0019-1035 KW - dust storms KW - polar regions KW - imagery KW - monitoring KW - Hellas Basin KW - textures KW - statistical analysis KW - atmosphere KW - Mars KW - Mars Orbiter Camera KW - dust devils KW - Arcadia Planitia KW - terrestrial planets KW - planets KW - crosscorrelation KW - autocorrelation KW - opacity KW - Mars Global Surveyor Program KW - Acidalia Planitia KW - seasonal variations KW - meteorology KW - Chryse Planitia KW - climate KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1729843659?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Mars+Orbiter+Camera+climatology+of+textured+dust+storms&rft.au=Guzewich%2C+Scott+D%3BToigo%2C+Anthony+D%3BKulowski%2C+Laura%3BWang%2C+Huiqun&rft.aulast=Guzewich&rft.aufirst=Scott&rft.date=2015-09-15&rft.volume=258&rft.issue=&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.06.023 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 32 N1 - PubXState - NY N1 - Document feature - illus. incl. sketch maps N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-11-05 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - Acidalia Planitia; Arcadia Planitia; atmosphere; autocorrelation; Chryse Planitia; climate; crosscorrelation; dust devils; dust storms; Hellas Basin; imagery; Mars; Mars Global Surveyor Program; Mars Orbiter Camera; meteorology; monitoring; opacity; planets; polar regions; seasonal variations; statistical analysis; terrestrial planets; textures DO - http://dx.doi.org/10.1016/j.icarus.2015.06.023 ER - TY - JOUR T1 - Refining the extraction methodology of carbonate associated sulfate; evidence from synthetic and natural carbonate samples AN - 1718053284; 2015-094030 AB - Sulfur and oxygen isotope analyses of trace and whole mineral sulfate are valuable in investigating diagenetic processes and the microbial communities that produced them, seawater anoxia, and paleoclimate. Oxygen isotopes are particularly useful in that they may also record alterations to the original isotope ratio, be it from post-depositional processes or oxidation of sulfide minerals during the chemical extraction procedure. Here we rigorously test several common methodological procedures of extracting carbonate associated sulfate (CAS) for sulfur and oxygen isotope analyses in order to generate a method that will extract only the CAS, while preserving associated organic reduced sulfur and sulfides for analysis. The results of these experiments on synthetically generated carbonates demonstrate that our proposed protocol sufficiently removes all non-CAS sulfate and does not result in oxidation of included sulfides. Analytical reproducibility (standard deviation) of synthetic carbonates is 0.1 ppm (1sigma ) for delta (super 34) S and 0.3 ppm (1sigma ) for delta (super 18) O. Extractions of low pyrite, high organic matter geologic samples from the Monterey Formation across a range of facies types demonstrate a reproducibility (1sigma ) of 0.4 ppm-0.7 ppm for delta (super 34) S and 0.8 ppm-1.3 ppm for delta (super 18) O, resulting from sample heterogeneity. delta (super 34) S and delta (super 18) O from Monterey Formation samples do not demonstrate oxidation of organic matter, suggesting our proposed protocol will preserve organic sulfur. A high pyrite-concentration Jet Rock concretion demonstrates that additional sulfate can be produced during the non-CAS leaching processes from oxidation of pyrite. We show that pyrite from the Jet Rock concretion ceases to oxidize when the sample is leached under an anoxic environment. Abstract Copyright (2015) Elsevier, B.V. JF - Chemical Geology AU - Theiling, Bethany P AU - Coleman, Max Y1 - 2015/09/14/ PY - 2015 DA - 2015 Sep 14 SP - 36 EP - 48 PB - Elsevier, Amsterdam VL - 411 SN - 0009-2541, 0009-2541 KW - United States KW - reproducibility KW - oxygen KW - ion probe data KW - isotopes KW - mass spectra KW - stable isotopes KW - California KW - Monterey Formation KW - chemical reactions KW - spectra KW - chemical composition KW - synthetic materials KW - experimental studies KW - sulfates KW - isotope ratios KW - oxidation KW - electron microscopy data KW - O-18/O-16 KW - X-ray spectra KW - EDS spectra KW - Naples Beach KW - Santa Barbara County California KW - S-34/S-32 KW - sulfur KW - leaching KW - crystal chemistry KW - sulfides KW - carbonates KW - SEM data KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1718053284?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Chemical+Geology&rft.atitle=Refining+the+extraction+methodology+of+carbonate+associated+sulfate%3B+evidence+from+synthetic+and+natural+carbonate+samples&rft.au=Theiling%2C+Bethany+P%3BColeman%2C+Max&rft.aulast=Theiling&rft.aufirst=Bethany&rft.date=2015-09-14&rft.volume=411&rft.issue=&rft.spage=36&rft.isbn=&rft.btitle=&rft.title=Chemical+Geology&rft.issn=00092541&rft_id=info:doi/10.1016%2Fj.chemgeo.2015.06.018 L2 - http://www.sciencedirect.com/science/journal/00092541 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2015-01-01 N1 - Number of references - 53 N1 - Document feature - illus. incl. 7 tables, sketch map N1 - Last updated - 2015-10-01 N1 - CODEN - CHGEAD N1 - SubjectsTermNotLitGenreText - California; carbonates; chemical composition; chemical reactions; crystal chemistry; EDS spectra; electron microscopy data; experimental studies; ion probe data; isotope ratios; isotopes; leaching; mass spectra; Monterey Formation; Naples Beach; O-18/O-16; oxidation; oxygen; reproducibility; S-34/S-32; Santa Barbara County California; SEM data; spectra; stable isotopes; sulfates; sulfides; sulfur; synthetic materials; United States; X-ray spectra DO - http://dx.doi.org/10.1016/j.chemgeo.2015.06.018 ER - TY - JOUR T1 - Connecting groundwater and surface water sources in groundwater dependent coastal wetlands and estuaries; Sian Ka'an Biosphere Reserve, Quintana Roo, Mexico AN - 1840618219; 2016-097558 AB - Groundwater and surface water samples were collected in five different regions of the Sian Ka'an Biosphere Reserve (SKBR) along the eastern coast of the Yucatan Peninsula in Quintana Roo, Mexico. Samples were analyzed for major ions, total phosphorus, total nitrogen, delta (super 18) O, and delta (super 2) H. Chemical modeling and a coupled principal component analysis and end-member mixing model were used to identify three groundwater sources that discharge to the coastal wetlands and estuaries of the SKBR. A sulfate-dominated and a calcium-dominated fresh groundwater source were found to contribute significantly to the headwaters of a southern and northern SKBR estuary, respectively. In the northern part of the Reserve, an elevated road disrupts the flow of freshwater through the estuarine zone creating hypersaline conditions and mangrove dead-zones. In a more pristine estuary to the south, coastal groundwater discharge associated with petens (tree islands) accounted for approximately 20% of the surface water in the mid-estuary. This coastal groundwater discharge from the petens adds a significant amount of phosphorus to the surface water in the estuary relative to the upstream and downstream sources. The lower alkalinity measured in the surface water relative to the high-alkalinity groundwater, despite clear indication of groundwater discharge, suggests that inorganic carbon export through degassing of CO (sub 2) could represent important carbon process in mangrove ecosystems. Our results indicate an important groundwater discharge mechanism that may facilitate nutrient delivery to karstic, oligotrophic estuaries when upland and marine nutrient supplies are depleted. Copyright 2014 Coastal and Estuarine Research Federation JF - Estuaries and Coasts AU - Lagomasino, David AU - Price, Rene M AU - Herrera-Silveira, Jorge AU - Miralles-Wilhelm, Fernando AU - Merediz-Alonso, Gonzalo AU - Gomez-Hernandez, Yadira Y1 - 2015/09// PY - 2015 DA - September 2015 SP - 1744 EP - 1763 PB - Springer in partnership with Coastal and Estuarine Research Federation, Port Republic, MD VL - 38 IS - 5 SN - 1559-2723, 1559-2723 KW - electrical conductivity KW - oxygen KW - mangrove swamps KW - isotopes KW - observation wells KW - salinity KW - stable isotopes KW - ground water KW - alkalinity KW - estuarine environment KW - discharge KW - geochemistry KW - Quintana Roo Mexico KW - pH KW - Sian Ka'an Biosphere Reserve KW - concentration KW - anions KW - shore features KW - principal components analysis KW - isotope ratios KW - surface water KW - statistical analysis KW - Yucatan Peninsula KW - O-18/O-16 KW - hydrochemistry KW - mires KW - Mexico KW - wetlands KW - D/H KW - hydrogen KW - swamps KW - cations KW - water wells KW - 21:Hydrogeology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840618219?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Estuaries+and+Coasts&rft.atitle=Connecting+groundwater+and+surface+water+sources+in+groundwater+dependent+coastal+wetlands+and+estuaries%3B+Sian+Ka%27an+Biosphere+Reserve%2C+Quintana+Roo%2C+Mexico&rft.au=Lagomasino%2C+David%3BPrice%2C+Rene+M%3BHerrera-Silveira%2C+Jorge%3BMiralles-Wilhelm%2C+Fernando%3BMerediz-Alonso%2C+Gonzalo%3BGomez-Hernandez%2C+Yadira&rft.aulast=Lagomasino&rft.aufirst=David&rft.date=2015-09-01&rft.volume=38&rft.issue=5&rft.spage=1744&rft.isbn=&rft.btitle=&rft.title=Estuaries+and+Coasts&rft.issn=15592723&rft_id=info:doi/10.1007%2Fs12237-014-9892-4 L2 - http://www.springerlink.com/content/120846/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by Springer Verlag, Berlin, Federal Republic of Germany N1 - Date revised - 2016-01-01 N1 - Number of references - 67 N1 - PubXState - MD N1 - Document feature - illus. incl. 4 tables, sketch map N1 - Last updated - 2016-11-17 N1 - CODEN - ESTUDO N1 - SubjectsTermNotLitGenreText - alkalinity; anions; cations; concentration; D/H; discharge; electrical conductivity; estuarine environment; geochemistry; ground water; hydrochemistry; hydrogen; isotope ratios; isotopes; mangrove swamps; Mexico; mires; O-18/O-16; observation wells; oxygen; pH; principal components analysis; Quintana Roo Mexico; salinity; shore features; Sian Ka'an Biosphere Reserve; stable isotopes; statistical analysis; surface water; swamps; water wells; wetlands; Yucatan Peninsula DO - http://dx.doi.org/10.1007/s12237-014-9892-4 ER - TY - JOUR T1 - Magma ocean depth and oxygen fugacity in the early Earth; implications for biochemistry AN - 1832622188; 779835-2 AB - A large class of elements, referred to as the siderophile (iron-loving) elements, in the Earth's mantle can be explained by an early deep magma ocean on the early Earth in which the mantle equilibrated with metallic liquid (core liquid). This stage would have affected the distribution of some of the classic volatile elements that are also essential ingredients for life and biochemistry - H, C, S, and N. Estimates are made of the H, C, S, and N contents of Earth's early mantle after core formation, considering the effects of variable temperature, pressure, oxygen fugacity, and composition on their partitioning. Assessment is made of whether additional, exogenous, sources are required to explain the observed mantle concentrations, and areas are identified where additional data and experimentation would lead to an improved understanding of this phase of Earth's history. Copyright 2015 Springer Science+Business Media Dordrecht and Springer Science+Business Media Dordrecht (outside the USA) JF - Origins of Life and Evolution of the Biosphere AU - Righter, Kevin AU - Cleaves, Henderson James Y1 - 2015/09// PY - 2015 DA - September 2015 SP - 361 EP - 366 PB - Springer, Dordrecht VL - 45 IS - 3 SN - 0169-6149, 0169-6149 KW - Hadean KW - magma oceans KW - Precambrian KW - oxygen KW - biochemistry KW - mantle KW - siderophile elements KW - life origin KW - fugacity KW - depth KW - nitrogen KW - hydrogen KW - carbon KW - sulfur KW - Eh KW - 02C:Geochemistry of rocks, soils, and sediments KW - 08:General paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832622188?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Origins+of+Life+and+Evolution+of+the+Biosphere&rft.atitle=Magma+ocean+depth+and+oxygen+fugacity+in+the+early+Earth%3B+implications+for+biochemistry&rft.au=Righter%2C+Kevin%3BCleaves%2C+Henderson+James&rft.aulast=Righter&rft.aufirst=Kevin&rft.date=2015-09-01&rft.volume=45&rft.issue=3&rft.spage=361&rft.isbn=&rft.btitle=&rft.title=Origins+of+Life+and+Evolution+of+the+Biosphere&rft.issn=01696149&rft_id=info:doi/10.1007%2Fs11084-015-9445-2 L2 - http://link.springer.com/journal/11084 LA - English DB - GeoRef N1 - Conference title - 2nd annual Earth-Life Science Institute international symposium N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data supplied by Springer Verlag, Berlin, Federal Republic of Germany N1 - Number of references - 38 N1 - SuppNotes - Based on Publisher-supplied data N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - biochemistry; carbon; depth; Eh; fugacity; Hadean; hydrogen; life origin; magma oceans; mantle; nitrogen; oxygen; Precambrian; siderophile elements; sulfur DO - http://dx.doi.org/10.1007/s11084-015-9445-2 ER - TY - JOUR T1 - Tidal Heating of Earth-like Exoplanets around M Stars: Thermal, Magnetic, and Orbital Evolutions AN - 1827883202; PQ0003681280 AB - The internal thermal and magnetic evolution of rocky exoplanets is critical to their habitability. We focus on the thermal-orbital evolution of Earth-mass planets around low-mass M stars whose radiative habitable zone overlaps with the "tidal zone," where tidal dissipation is expected to be a significant heat source in the interior. We develop a thermal-orbital evolution model calibrated to Earth that couples tidal dissipation, with a temperature-dependent Maxwell rheology, to orbital circularization and migration. We illustrate thermal-orbital steady states where surface heat flow is balanced by tidal dissipation and cooling can be stalled for billions of years until circularization occurs. Orbital energy dissipated as tidal heat in the interior drives both inward migration and circularization, with a circularization time that is inversely proportional to the dissipation rate. We identify a peak in the internal dissipation rate as the mantle passes through a viscoelastic state at mantle temperatures near 1800K. Planets orbiting a 0.1 solar-mass star within 0.07 AU circularize before 10 Gyr, independent of initial eccentricity. Once circular, these planets cool monotonically and maintain dynamos similar to that of Earth. Planets forced into eccentric orbits can experience a super-cooling of the core and rapid core solidification, inhibiting dynamo action for planets in the habitable zone. We find that tidal heating is insignificant in the habitable zone around 0.45 (or larger) solar-mass stars because tidal dissipation is a stronger function of orbital distance than stellar mass, and the habitable zone is farther from larger stars. Suppression of the planetary magnetic field exposes the atmosphere to stellar wind erosion and the surface to harmful radiation. In addition to weak magnetic fields, massive melt eruption rates and prolonged magma oceans may render eccentric planets in the habitable zone of low-mass stars inhospitable for life. Key Words: Tidal dissipation-Thermal history-Planetary interiors-Magnetic field. Astrobiology 15, 739-760. JF - Astrobiology AU - Driscoll, P E AU - Barnes, R AD - Astronomy Department, University of Washington, Seattle, Washington; NASA Astrobiology Institute, Virtual Planetary Laboratory Lead Team. Y1 - 2015/09// PY - 2015 DA - September 2015 SP - 739 EP - 760 PB - Mary Ann Liebert, Inc., 2 Madison Ave Larchmont NY 10538-1962 United States VL - 15 IS - 9 SN - 1531-1074, 1531-1074 KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Temperature effects KW - Eruptions KW - Illustrations KW - Heat flow KW - Identification KW - Migration KW - Atmosphere KW - viscoelasticity KW - Models KW - Magnetic fields KW - Rheology KW - Radiation KW - Energy KW - Oceans KW - Tidal dissipation KW - Solidification KW - Cell migration KW - Magma KW - Wind KW - Evolution KW - Q1 08421:Migrations and rhythms KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1827883202?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Astrobiology&rft.atitle=Tidal+Heating+of+Earth-like+Exoplanets+around+M+Stars%3A+Thermal%2C+Magnetic%2C+and+Orbital+Evolutions&rft.au=Driscoll%2C+P+E%3BBarnes%2C+R&rft.aulast=Driscoll&rft.aufirst=P&rft.date=2015-09-01&rft.volume=15&rft.issue=9&rft.spage=739&rft.isbn=&rft.btitle=&rft.title=Astrobiology&rft.issn=15311074&rft_id=info:doi/10.1089%2Fast.2015.1325 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-10-01 N1 - Number of references - 72 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Temperature effects; Magnetic fields; Radiation; Illustrations; Tidal dissipation; Heat flow; Solidification; Identification; Magma; Eruptions; Atmosphere; Migration; viscoelasticity; Models; Rheology; Oceans; Energy; Cell migration; Evolution; Wind DO - http://dx.doi.org/10.1089/ast.2015.1325 ER - TY - JOUR T1 - Hydro-economic analysis of groundwater pumping for irrigated agriculture in California's Central Valley, USA AN - 1824216591; 2016-083755 AB - As in many places, groundwater in California (USA) is the major alternative water source for agriculture during drought, so groundwater's availability will drive some inevitable changes in the state's water management. Currently, agricultural, environmental, and urban uses compete for groundwater, resulting in substantial overdraft in dry years with lowering of water tables, which in turn increases pumping costs and reduces groundwater pumping capacity. In this study, SWAP (an economic model of agricultural production and water use in California) and C2VISim (the California Department of Water Resources groundwater model for California's Central Valley) are connected. This paper examines the economic costs of pumping replacement groundwater during drought and the potential loss of pumping capacity as groundwater levels drop. A scenario of three additional drought years continuing from 2014 show lower water tables in California's Central Valley and loss of pumping capacity. Places without access to groundwater and with uncertain surface-water deliveries during drought are the most economically vulnerable in terms of crop revenues, employment and household income. This is particularly true for Tulare Lake basin, which relies heavily on water imported from the Sacramento-San Joaquin Delta. Remote-sensing estimates of idle agricultural land between 2012 and 2014 confirm this finding. Results also point to the potential of a portfolio approach for agriculture, in which crop mixing and conservation practices have substantial roles. Copyright 2015 Springer-Verlag Berlin Heidelberg JF - Hydrogeology Journal AU - Medellin-Azuara, Josue AU - MacEwan, Duncan AU - Howitt, Richard E AU - Koruakos, George AU - Dogrul, Emin C AU - Brush, Charles F AU - Kadir, Tariq N AU - Harter, Thomas AU - Melton, Forrest AU - Lund, Jay R Y1 - 2015/09// PY - 2015 DA - September 2015 SP - 1205 EP - 1216 PB - Springer, Berlin - Heidelberg VL - 23 IS - 6 SN - 1431-2174, 1431-2174 KW - United States KW - pumping KW - impact statements KW - water management KW - irrigation KW - ground water KW - drought KW - California KW - Tulare Lake basin KW - conservation KW - water use KW - water supply KW - regional planning KW - optimization KW - mathematical models KW - cost KW - Central Valley KW - water table KW - drawdown KW - policy KW - economics KW - water resources KW - land use KW - remote sensing KW - 21:Hydrogeology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824216591?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrogeology+Journal&rft.atitle=Hydro-economic+analysis+of+groundwater+pumping+for+irrigated+agriculture+in+California%27s+Central+Valley%2C+USA&rft.au=Medellin-Azuara%2C+Josue%3BMacEwan%2C+Duncan%3BHowitt%2C+Richard+E%3BKoruakos%2C+George%3BDogrul%2C+Emin+C%3BBrush%2C+Charles+F%3BKadir%2C+Tariq+N%3BHarter%2C+Thomas%3BMelton%2C+Forrest%3BLund%2C+Jay+R&rft.aulast=Medellin-Azuara&rft.aufirst=Josue&rft.date=2015-09-01&rft.volume=23&rft.issue=6&rft.spage=1205&rft.isbn=&rft.btitle=&rft.title=Hydrogeology+Journal&rft.issn=14312174&rft_id=info:doi/10.1007%2Fs10040-015-1283-9 L2 - http://www.springerlink.com/content/102028/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by Springer Verlag, Berlin, Federal Republic of Germany N1 - Date revised - 2016-01-01 N1 - Number of references - 255 N1 - Document feature - illus. incl. 8 tables, sketch maps N1 - Last updated - 2016-09-29 N1 - SubjectsTermNotLitGenreText - California; Central Valley; conservation; cost; drawdown; drought; economics; ground water; impact statements; irrigation; land use; mathematical models; optimization; policy; pumping; regional planning; remote sensing; Tulare Lake basin; United States; water management; water resources; water supply; water table; water use DO - http://dx.doi.org/10.1007/s10040-015-1283-9 ER - TY - JOUR T1 - Pattern Design for 3D Point Matching AN - 1808370509; PQ0002283164 AB - This paper presents an approach for designing 3D point patterns which are uniquely distinguishable in the absence of an a priori pose estimate. The principles for designing 3D point patterns are presented. Simple example patterns with analytic solutions are used to illustrate the approach. The search for desirable point patterns is mechanized through the optimization of a fitness function. This fitness function provides a metric for assessing the distinguishability of any pattern. Two example applications are given to demonstrate the utility of the technique for navigation systems. Finally, the technique is modified to allow the use of evolutionary algorithms for the design of patterns having greater complexity. JF - Navigation (Washington) AU - Robinson, Shane B AU - Christian, John A AD - NASA Johnson Space Center Houston, TX 77058. Y1 - 2015/09// PY - 2015 DA - September 2015 SP - 189 EP - 203 PB - Wiley Subscription Services, Inc., 1105 N Market St Wilmington DE 19801 VL - 62 IS - 3 SN - 0028-1522, 0028-1522 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Algorithms KW - Navigation systems KW - INE, USA, Washington KW - Navigation KW - Optimization KW - Utilities KW - Q2 09393:Remote geosensing KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808370509?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Navigation+%28Washington%29&rft.atitle=Pattern+Design+for+3D+Point+Matching&rft.au=Robinson%2C+Shane+B%3BChristian%2C+John+A&rft.aulast=Robinson&rft.aufirst=Shane&rft.date=2015-09-01&rft.volume=62&rft.issue=3&rft.spage=189&rft.isbn=&rft.btitle=&rft.title=Navigation+%28Washington%29&rft.issn=00281522&rft_id=info:doi/10.1002%2Fnavi.115 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-08-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Navigation systems; Algorithms; Navigation; Utilities; Optimization; INE, USA, Washington DO - http://dx.doi.org/10.1002/navi.115 ER - TY - JOUR T1 - Inroads of remote sensing into hydrologic science during the WRR era AN - 1797532587; 2016-053103 AB - The first issue of WRR appeared eight years after the launch of Sputnik, but by WRR's 25 (super th) anniversary, only seven papers that used remote sensing had appeared. Over the journal's second 25 years, that changed remarkably, and remote sensing is now widely used in hydrology and other geophysical sciences. We attribute this evolution to production of data sets that scientists not well versed in remote sensing can use, and to educational initiatives like NASA's Earth System Science Fellowship program that has supported over a thousand scientists, many in hydrology. We review progress in remote sensing in hydrology from a water balance perspective. We argue that progress is primarily attributable to a creative use of existing and past satellite sensors to estimate such variables as evapotranspiration rates or water storage in lakes and reservoirs and to new and planned missions. Recent transforming technologies include the Gravity Recovery and Climate Experiment (GRACE), the European Soil Moisture and Ocean Salinity (SMOS) and U.S. Soil Moisture Active Passive (SMAP) missions, and the Global Precipitation Measurement (GPM) mission. Future missions include Surface Water and Ocean Topography (SWOT) to measure river discharge and lake, reservoir, and wetland storage. Measurement of some important hydrologic variables remains problematic: retrieval of snow water equivalent (SWE) from space remains elusive especially in mountain areas, even though snow cover extent is well observed, and was the topic of 4 of the first 5 remote sensing papers published in WRR. We argue that this area deserves more strategic thinking from the hydrology community. Abstract Copyright (2015), . American Geophysical Union. All Rights Reserved. JF - Water Resources Research AU - Lettenmaier, Dennis P AU - Alsdorf, Doug AU - Dozier, Jeff AU - Huffman, George J AU - Pan, Ming AU - Wood, Eric F AU - Montanari, Alberto AU - Bahr, Jean AU - Bloeschl, Guenter AU - Cai, Ximing AU - Mackay, D Scott AU - Michalak, Anna M AU - Rajaram, Harihar AU - Sander, Graham Y1 - 2015/09// PY - 2015 DA - September 2015 SP - 7309 EP - 7342 PB - American Geophysical Union, Washington, DC VL - 51 IS - 9 SN - 0043-1397, 0043-1397 KW - soils KW - hydrology KW - water storage KW - Water Resources Research KW - snow water equivalent KW - moisture KW - global KW - surface water KW - GRACE KW - water balance KW - satellite methods KW - history KW - AVHRR KW - mountains KW - publications KW - snow KW - reflectance KW - review KW - TOPEX/POSEIDON KW - remote sensing KW - MODIS KW - 21:Hydrogeology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1797532587?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Water+Resources+Research&rft.atitle=Inroads+of+remote+sensing+into+hydrologic+science+during+the+WRR+era&rft.au=Lettenmaier%2C+Dennis+P%3BAlsdorf%2C+Doug%3BDozier%2C+Jeff%3BHuffman%2C+George+J%3BPan%2C+Ming%3BWood%2C+Eric+F%3BMontanari%2C+Alberto%3BBahr%2C+Jean%3BBloeschl%2C+Guenter%3BCai%2C+Ximing%3BMackay%2C+D+Scott%3BMichalak%2C+Anna+M%3BRajaram%2C+Harihar%3BSander%2C+Graham&rft.aulast=Lettenmaier&rft.aufirst=Dennis&rft.date=2015-09-01&rft.volume=51&rft.issue=9&rft.spage=7309&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1002%2F2015WR017616 L2 - http://www.agu.org/journals/wr/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 250 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2016-06-17 N1 - CODEN - WRERAQ N1 - SubjectsTermNotLitGenreText - AVHRR; global; GRACE; history; hydrology; MODIS; moisture; mountains; publications; reflectance; remote sensing; review; satellite methods; snow; snow water equivalent; soils; surface water; TOPEX/POSEIDON; water balance; Water Resources Research; water storage DO - http://dx.doi.org/10.1002/2015WR017616 ER - TY - JOUR T1 - The Syrtis Major Volcano, Mars; a multidisciplinary approach to interpreting its magmatic evolution and structural development AN - 1789752132; 2016-044061 AB - Very weak crustal magnetic fields over the Syrtis Major volcanic complex imply almost total thermal demagnetization via magmatic intrusions over a large area less than approximately 4 Ga. We fit a model of these intrusions and the resulting thermal demagnetization to maps of crustal magnetic field strength at 185 km altitude. The best fits are most consistent with a "dog bone"-shaped region of intrusive material, elongated approximately north-south, with an area of approximately 350,000 km (super 2) and an inferred volume of approximately 4-19 X 10 (super 6) km (super 3) . Such a large volume is best explained by a long-lived mantle plume beneath the Syrtis edifice. A free-air gravity anomaly high over the Syrtis Major caldera is consistent with dense mafic residue remaining at depth following crystal fractionation that produced the silicic magmas seen at the surface. The elongation of this region is consistent with ascent and north-south emplacement of magma enabled by structures parallel to and associated with the preexisting Isidis impact basin. Abstract Copyright (2015), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Lillis, Robert J AU - Dufek, Josef AU - Kiefer, Walter S AU - Black, Benjamin A AU - Manga, Michael AU - Richardson, Jacob A AU - Bleacher, Jacob E Y1 - 2015/09// PY - 2015 DA - September 2015 SP - 1476 EP - 1496 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 120 IS - 9 SN - 2169-9097, 2169-9097 KW - magmatic differentiation KW - demagnetization KW - impact features KW - mantle KW - Mars KW - magnetic field KW - gravity anomalies KW - volcanic features KW - Syrtis Major KW - tectonics KW - interpretation KW - crystal fractionation KW - mantle plumes KW - paleomagnetism KW - emplacement KW - terrestrial planets KW - calderas KW - planets KW - Isidis Planitia KW - intrusions KW - magmas KW - volcanoes KW - impact craters KW - crust KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789752132?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Planets&rft.atitle=The+Syrtis+Major+Volcano%2C+Mars%3B+a+multidisciplinary+approach+to+interpreting+its+magmatic+evolution+and+structural+development&rft.au=Lillis%2C+Robert+J%3BDufek%2C+Josef%3BKiefer%2C+Walter+S%3BBlack%2C+Benjamin+A%3BManga%2C+Michael%3BRichardson%2C+Jacob+A%3BBleacher%2C+Jacob+E&rft.aulast=Lillis&rft.aufirst=Robert&rft.date=2015-09-01&rft.volume=120&rft.issue=9&rft.spage=1476&rft.isbn=&rft.btitle=&rft.title=International+Environmental+Agreements&rft.issn=15679764&rft_id=info:doi/10.1007%2Fs10784-016-9321-1 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9100 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 91 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2016-05-19 N1 - SubjectsTermNotLitGenreText - calderas; crust; crystal fractionation; demagnetization; emplacement; gravity anomalies; impact craters; impact features; interpretation; intrusions; Isidis Planitia; magmas; magmatic differentiation; magnetic field; mantle; mantle plumes; Mars; paleomagnetism; planets; Syrtis Major; tectonics; terrestrial planets; volcanic features; volcanoes DO - http://dx.doi.org/10.1002/2014JE004774 ER - TY - JOUR T1 - Simulation of the radiolysis of water using Green's functions of the diffusion equation AN - 1785238243; PQ0002900902 AB - Radiation chemistry is of fundamental importance in the understanding of the effects of ionising radiation, notably with regard to DNA damage by indirect effect (e.g. damage by [middot]OH radicals created by the radiolysis of water). In the recent years, Green's functions of the diffusion equation (GFDEs) have been used extensively in biochemistry, notably to simulate biochemical networks in time and space. In the present work, an approach based on the GFDE will be used to refine existing models on the indirect effect of ionising radiation on DNA. As a starting point, the code RITRACKS (relativistic ion tracks) will be used to simulate the radiation track structure and calculate the position of all radiolytic species formed during irradiation. The chemical reactions between these radiolytic species and with DNA will be done by using an efficient Monte Carlo sampling algorithm for the GFDE of reversible reactions with an intermediate state that has been developed recently. These simulations should help the understanding of the contribution of the indirect effect in the formation of DNA damage, particularly with regards to the formation of double-strand breaks. JF - Radiation Protection Dosimetry AU - Plante, I AU - Cucinotta, F A AD - Wyle Science, Technology & Engineering, NASA Johnson Space Center, 2101 NASA Parkway, Houston, TX 77058, USA, ianik.plante-1@nasa.gov Y1 - 2015/09// PY - 2015 DA - September 2015 SP - 24 EP - 28 PB - Oxford University Press, Great Clarendon Street Oxford OX2 6DP United Kingdom VL - 166 IS - 1-4 SN - 0144-8420, 0144-8420 KW - Environment Abstracts KW - Monte Carlo simulation KW - Radiation KW - Biochemistry KW - Chemical reactions KW - Ionizing radiation KW - Irradiation KW - Dosimetry KW - DNA KW - Simulation KW - Diffusion KW - ENA 21:Wildlife UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1785238243?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Radiation+Protection+Dosimetry&rft.atitle=Simulation+of+the+radiolysis+of+water+using+Green%27s+functions+of+the+diffusion+equation&rft.au=Plante%2C+I%3BCucinotta%2C+F+A&rft.aulast=Plante&rft.aufirst=I&rft.date=2015-09-01&rft.volume=166&rft.issue=1-4&rft.spage=24&rft.isbn=&rft.btitle=&rft.title=Radiation+Protection+Dosimetry&rft.issn=01448420&rft_id=info:doi/10.1093%2Frpd%2Fncv179 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Last updated - 2016-05-12 N1 - SubjectsTermNotLitGenreText - Monte Carlo simulation; Biochemistry; Radiation; Chemical reactions; Irradiation; Ionizing radiation; Dosimetry; DNA; Simulation; Diffusion DO - http://dx.doi.org/10.1093/rpd/ncv179 ER - TY - JOUR T1 - Binary-Encounter-Bethe ionisation cross sections for simulation of DNA damage by the direct effect of ionising radiation AN - 1785227758; PQ0002900901 AB - DNA damage is of crucial importance in the understanding of the effects of ionising radiation. To refine existing DNA damage models, an approach using the Binary-Encounter-Bethe (BEB) cross sections was developed. The differential cross sections for ionisation of the molecular orbitals of the DNA bases, sugars and phosphates are calculated using the electron binding energy, the mean kinetic energy and the occupancy number of each orbital as parameters. The resulting cross section has an analytic form which is quite convenient to use for Monte-Carlo codes that randomly sample the energy loss occurring during an ionisation event. We also describe an algorithm to simulate the interactions of electrons with DNA in the radiation transport code RITRACKS using the integrated BEB cross section for the bases, sugar and phosphates. JF - Radiation Protection Dosimetry AU - Plante, I AU - Cucinotta, F A AD - Wyle Sciences, Technology and Engineering, NASA Johnson Space Center, 2101 NASA Parkway, Houston, TX 77058, USA, ianik.plante-1@nasa.gov Y1 - 2015/09// PY - 2015 DA - September 2015 SP - 19 EP - 23 PB - Oxford University Press, Great Clarendon Street Oxford OX2 6DP United Kingdom VL - 166 IS - 1-4 SN - 0144-8420, 0144-8420 KW - Toxicology Abstracts; Biochemistry Abstracts 2: Nucleic Acids; Environment Abstracts KW - Sugar KW - Thermodynamics KW - Dosimetry KW - Algorithms KW - Simulation KW - DNA damage KW - Phosphates KW - Radiation KW - Phosphate KW - Kinetic energy KW - Ionizing radiation KW - Kinetics KW - Energy KW - DNA KW - N 14820:DNA Metabolism & Structure KW - X 24300:Methods KW - ENA 07:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1785227758?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxicologyabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Radiation+Protection+Dosimetry&rft.atitle=Binary-Encounter-Bethe+ionisation+cross+sections+for+simulation+of+DNA+damage+by+the+direct+effect+of+ionising+radiation&rft.au=Plante%2C+I%3BCucinotta%2C+F+A&rft.aulast=Plante&rft.aufirst=I&rft.date=2015-09-01&rft.volume=166&rft.issue=1-4&rft.spage=19&rft.isbn=&rft.btitle=&rft.title=Radiation+Protection+Dosimetry&rft.issn=01448420&rft_id=info:doi/10.1093%2Frpd%2Fncv143 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-04-01 N1 - Last updated - 2016-08-17 N1 - SubjectsTermNotLitGenreText - Sugar; DNA damage; Thermodynamics; Kinetic energy; Phosphate; Radiation; Energy; Dosimetry; Algorithms; Phosphates; Kinetics; Ionizing radiation; DNA; Simulation DO - http://dx.doi.org/10.1093/rpd/ncv143 ER - TY - JOUR T1 - Life Cycle Management Considerations of Remotely Sensed Geospatial Data and Documentation for Long Term Preservation AN - 1784139803 AB - As geospatial missions age, one of the challenges for the usability of data is the availability of relevant and updated metadata with sufficient documentation that can be used by future generations of users to gain knowledge from the original data. Given that remote sensing data undergo many intermediate processing steps, for example, an understanding of the exact algorithms employed and the quality of that data produced could be key considerations for these users. As interest in global climate data is increasing, documentation about older data, their origins, and their provenance are valuable to first-time users attempting to perform historical climate research or comparative analysis of global change. Incomplete or missing documentation could be what stands in the way of a new researcher attempting to use the data. Therefore, preservation of documentation and related metadata is sometimes just as critical as the preservation of the original observational data. The Goddard Earth Sciences-Data and Information Service Center (GES DISC), a NASA Earth science Distributed Active Archive Center (DAAC) that falls under the management structure of the Earth Science Data and Information System (ESDIS), is actively pursuing the preservation of all necessary artifacts needed by future users. In this article, we will detail the data custodial planning and the data lifecycle process developed for content preservation, and our implementation of a Preservation System to safeguard documents and associated artifacts from legacy (older) missions, as well as detail lessons learned regarding access rights and confidentiality of information issues. We also elaborate on key points that made our preservation effort successful; the primary points being drafting of a governing baseline for historical data preservation from satellite missions and using the historical baseline as a guide to content filtering of what documents to preserve. The Preservation System currently archives documentation content for High Resolution Dynamics Limb Sounder (HIRDLS), Upper Atmosphere Research Satellite (UARS), Total Ozone Mapping Spectrometer (TOMS) mission data, and the 1960s era Nimbus mission. Documentation from other missions like the Tropical Rainfall Measuring Mission (TRMM), the Ozone Monitoring Instrument (OMI), and the Atmospheric Infra-Red Sounder (AIRS) are also slated to be added to this repository, as well as other mission datasets to be preserved at the GES DISC. JF - Journal of Map & Geography Libraries AU - Khayat, Mohammad AU - Kempler, Steven J AD - ADNET Systems Inc., Rockville, Maryland, USA; NASA, Goddard Space Flight Center, Greenbelt, Maryland, USA ; NASA, Goddard Space Flight Center, Greenbelt, Maryland, USA Y1 - 2015///Sep/Dec PY - 2015 DA - Sep/Dec 2015 SP - 271 EP - 288 CY - Binghamton PB - Taylor & Francis Ltd. VL - 11 IS - 3 SN - 1542-0353 KW - Library And Information Sciences KW - geospatial data curation KW - digital document preservation KW - open-source KW - FEDORA Commons KW - Meteorological satellites KW - Metadata KW - Documentation KW - Earth science KW - 9.15:TECHNICAL SERVICES - PRESERVATION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1784139803?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Alisa&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Map+%26+Geography+Libraries&rft.atitle=Life+Cycle+Management+Considerations+of+Remotely+Sensed+Geospatial+Data+and+Documentation+for+Long+Term+Preservation&rft.au=Khayat%2C+Mohammad%3BKempler%2C+Steven+J&rft.aulast=Khayat&rft.aufirst=Mohammad&rft.date=2015-09-01&rft.volume=11&rft.issue=3&rft.spage=271&rft.isbn=&rft.btitle=&rft.title=Journal+of+Map+%26+Geography+Libraries&rft.issn=15420353&rft_id=info:doi/10.1080%2F15420353.2015.1072122 LA - English DB - Library & Information Science Abstracts (LISA) N1 - Name - National Aeronautics & Space Administration--NASA N1 - Copyright - Published with license by Taylor & Francis N1 - Last updated - 2016-10-05 DO - http://dx.doi.org/10.1080/15420353.2015.1072122 ER - TY - JOUR T1 - Did the Martian outflow channels mostly form during the Amazonian period? AN - 1765874838; 2016-015885 JF - Icarus AU - Rodriguez, J Alexis P AU - Platz, Thomas AU - Gulick, Virginia AU - Baker, Victor R AU - Fairen, Alberto G AU - Kargel, Jeffrey AU - Yan, Jianguo AU - Miyamoto, Hideaki AU - Glines, Natalie Y1 - 2015/09/01/ PY - 2015 DA - 2015 Sep 01 SP - 387 EP - 395 PB - Elsevier, New York, NY VL - 257 SN - 0019-1035, 0019-1035 KW - impact features KW - resurfacing KW - Mars KW - mapping KW - Hesperian KW - erosion features KW - outflow channels KW - chaotic terrains KW - paleoclimatology KW - excavations KW - ground water KW - Simud Vallis KW - Amazonian KW - age KW - floods KW - Tiu Vallis KW - hydrology KW - size-frequency distribution KW - bedforms KW - terrestrial planets KW - planets KW - Ares Vallis KW - impact craters KW - geomorphology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765874838?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Did+the+Martian+outflow+channels+mostly+form+during+the+Amazonian+period%3F&rft.au=Rodriguez%2C+J+Alexis+P%3BPlatz%2C+Thomas%3BGulick%2C+Virginia%3BBaker%2C+Victor+R%3BFairen%2C+Alberto+G%3BKargel%2C+Jeffrey%3BYan%2C+Jianguo%3BMiyamoto%2C+Hideaki%3BGlines%2C+Natalie&rft.aulast=Rodriguez&rft.aufirst=J+Alexis&rft.date=2015-09-01&rft.volume=257&rft.issue=&rft.spage=387&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.04.024 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 70 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table, sketch maps N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-02-18 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - age; Amazonian; Ares Vallis; bedforms; chaotic terrains; erosion features; excavations; floods; geomorphology; ground water; Hesperian; hydrology; impact craters; impact features; mapping; Mars; outflow channels; paleoclimatology; planets; resurfacing; Simud Vallis; size-frequency distribution; terrestrial planets; Tiu Vallis DO - http://dx.doi.org/10.1016/j.icarus.2015.04.024 ER - TY - JOUR T1 - The mutual orbit, mass, and density of the large transneptunian binary system Varda and Ilmare AN - 1765871899; 2016-015867 JF - Icarus AU - Grundy, W M AU - Porter, S B AU - Benecchi, S D AU - Roe, H G AU - Noll, K S AU - Trujillo, C A AU - Thirouin, A AU - Stansberry, J A AU - Barker, E AU - Levison, H F Y1 - 2015/09/01/ PY - 2015 DA - 2015 Sep 01 SP - 130 EP - 138 PB - Elsevier, New York, NY VL - 257 SN - 0019-1035, 0019-1035 KW - near-infrared spectra KW - imagery KW - angular momentum KW - bulk density KW - density KW - orbits KW - Kuiper Belt KW - Keck II Telescope KW - optical spectra KW - trans-Neptunian objects KW - Gemini North Telescope KW - Ilmare trans-Neptunian object KW - mass KW - photometry KW - color KW - Hubble Space Telescope KW - periodicity KW - spectra KW - Varda trans-Neptunian object KW - satellites KW - binary systems KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765871899?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=The+mutual+orbit%2C+mass%2C+and+density+of+the+large+transneptunian+binary+system+Varda+and+Ilmare&rft.au=Grundy%2C+W+M%3BPorter%2C+S+B%3BBenecchi%2C+S+D%3BRoe%2C+H+G%3BNoll%2C+K+S%3BTrujillo%2C+C+A%3BThirouin%2C+A%3BStansberry%2C+J+A%3BBarker%2C+E%3BLevison%2C+H+F&rft.aulast=Grundy&rft.aufirst=W&rft.date=2015-09-01&rft.volume=257&rft.issue=&rft.spage=130&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.04.036 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 61 N1 - PubXState - NY N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2016-02-18 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - angular momentum; binary systems; bulk density; color; density; Gemini North Telescope; Hubble Space Telescope; Ilmare trans-Neptunian object; imagery; Keck II Telescope; Kuiper Belt; mass; near-infrared spectra; optical spectra; orbits; periodicity; photometry; satellites; spectra; trans-Neptunian objects; Varda trans-Neptunian object DO - http://dx.doi.org/10.1016/j.icarus.2015.04.036 ER - TY - JOUR T1 - Vesta's missing moons; comprehensive search for natural satellites of Vesta by the Dawn spacecraft AN - 1765869513; 2016-015871 JF - Icarus AU - McFadden, Lucy A AU - Skillman, David R AU - Memarsadeghi, Nargess AU - Li, Jian-Yang AU - Joy, S P AU - Polanskey, C A AU - Rayman, Marc D AU - Sykes, Mark V AU - Tricarico, Pasquale AU - Palmer, Eric AU - O'Brien, David P AU - Mottola, Stefano AU - Carsenty, Uri AU - Mutchler, Max AU - McLean, Brian AU - Schroeder, Stefan E AU - Mastrodemos, Nicolas AU - Schiff, Conrad AU - Keller, H Uwe AU - Nathues, Andreas AU - Gutierrez-Marques, Pablo AU - Raymond, C A AU - Russell, C T Y1 - 2015/09/01/ PY - 2015 DA - 2015 Sep 01 SP - 207 EP - 216 PB - Elsevier, New York, NY VL - 257 SN - 0019-1035, 0019-1035 KW - asteroids KW - Vesta Asteroid KW - detection limit KW - orbits KW - data processing KW - simulation KW - Dawn Mission KW - Framing Camera KW - mosaics KW - dynamics KW - surveys KW - satellites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765869513?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Vesta%27s+missing+moons%3B+comprehensive+search+for+natural+satellites+of+Vesta+by+the+Dawn+spacecraft&rft.au=McFadden%2C+Lucy+A%3BSkillman%2C+David+R%3BMemarsadeghi%2C+Nargess%3BLi%2C+Jian-Yang%3BJoy%2C+S+P%3BPolanskey%2C+C+A%3BRayman%2C+Marc+D%3BSykes%2C+Mark+V%3BTricarico%2C+Pasquale%3BPalmer%2C+Eric%3BO%27Brien%2C+David+P%3BMottola%2C+Stefano%3BCarsenty%2C+Uri%3BMutchler%2C+Max%3BMcLean%2C+Brian%3BSchroeder%2C+Stefan+E%3BMastrodemos%2C+Nicolas%3BSchiff%2C+Conrad%3BKeller%2C+H+Uwe%3BNathues%2C+Andreas%3BGutierrez-Marques%2C+Pablo%3BRaymond%2C+C+A%3BRussell%2C+C+T&rft.aulast=McFadden&rft.aufirst=Lucy&rft.date=2015-09-01&rft.volume=257&rft.issue=&rft.spage=207&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.04.038 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 50 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-02-18 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - asteroids; data processing; Dawn Mission; detection limit; dynamics; Framing Camera; mosaics; orbits; satellites; simulation; surveys; Vesta Asteroid DO - http://dx.doi.org/10.1016/j.icarus.2015.04.038 ER - TY - JOUR T1 - Estimating surface NO sub(2) and SO sub(2) mixing ratios from fast-response total column observations and potential application to geostationary missions AN - 1751229218; PQ0002368484 AB - Total-column nitrogen dioxide (NO sub(2)) data collected by a ground-based sun-tracking spectrometer system (Pandora) and an photolytic-converter-based in-situ instrument collocated at NASA's Langley Research Center in Hampton, Virginia were analyzed to study the relationship between total-column and surface NO sub(2) measurements. The measurements span more than a year and cover all seasons. Surface mixing ratios are estimated via application of a planetary boundary-layer (PBL) height correction factor. This PBL correction factor effectively corrects for boundary-layer variability throughout the day, and accounts for up to approximately 75 % of the variability between the NO sub(2) data sets. Previous studies have made monthly and seasonal comparisons of column/surface data, which has shown generally good agreement over these long average times. In the current analysis comparisons of column densities averaged over 90 s and 1 h are made. Applicability of this technique to sulfur dioxide (SO sub(2)) is briefly explored. The SO sub(2) correlation is improved by excluding conditions where surface levels are considered background. The analysis is extended to data from the July 2011 DISCOVER-AQ mission over the greater Baltimore, MD area to examine the method's performance in more-polluted urban conditions where NO sub(2) concentrations are typically much higher. JF - Journal of Atmospheric Chemistry AU - Knepp, T AU - Pippin, M AU - Crawford, J AU - Chen, G AU - Szykman, J AU - Long, R AU - Cowen, L AU - Cede, A AU - Abuhassan, N AU - Herman, J AU - Delgado, R AU - Compton, J AU - Berkoff, T AU - Fishman, J AU - Martins, D AU - Stauffer, R AU - Thompson, A M AU - Weinheimer, A AU - Knapp, D AU - Montzka, D AU - Lenschow, D AU - Neil, D AD - Science Systems and Applications, Inc., Hampton, VA, 23681, USA, travis.n.knepp@nasa.gov Y1 - 2015/09// PY - 2015 DA - September 2015 SP - 261 EP - 286 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 72 IS - 3-4 SN - 0167-7764, 0167-7764 KW - Pollution Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Sulfur KW - Variability KW - Sulphur KW - Correlations KW - Current observations KW - Mixing KW - ANW, USA, Virginia KW - Nitrogen dioxide KW - Sulfur dioxide KW - Seasonal comparisons KW - ANW, USA, Maryland, Baltimore KW - Seasonal variability KW - Mixing ratio KW - Atmospheric boundary layer KW - Spectrometers KW - Atmospheric Chemistry KW - Density KW - Estimating KW - Performance Evaluation KW - Atmospheric chemistry KW - Nitrogen KW - M2 551.510.42:Air Pollution (551.510.42) KW - SW 5040:Data acquisition KW - P 0000:AIR POLLUTION KW - Q2 09244:Air-sea coupling UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1751229218?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Atmospheric+Chemistry&rft.atitle=Estimating+surface+NO+sub%282%29+and+SO+sub%282%29+mixing+ratios+from+fast-response+total+column+observations+and+potential+application+to+geostationary+missions&rft.au=Knepp%2C+T%3BPippin%2C+M%3BCrawford%2C+J%3BChen%2C+G%3BSzykman%2C+J%3BLong%2C+R%3BCowen%2C+L%3BCede%2C+A%3BAbuhassan%2C+N%3BHerman%2C+J%3BDelgado%2C+R%3BCompton%2C+J%3BBerkoff%2C+T%3BFishman%2C+J%3BMartins%2C+D%3BStauffer%2C+R%3BThompson%2C+A+M%3BWeinheimer%2C+A%3BKnapp%2C+D%3BMontzka%2C+D%3BLenschow%2C+D%3BNeil%2C+D&rft.aulast=Knepp&rft.aufirst=T&rft.date=2015-09-01&rft.volume=72&rft.issue=3-4&rft.spage=261&rft.isbn=&rft.btitle=&rft.title=Journal+of+Atmospheric+Chemistry&rft.issn=01677764&rft_id=info:doi/10.1007%2Fs10874-013-9257-6 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-12-01 N1 - Number of references - 56 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Sulphur; Atmospheric chemistry; Mixing ratio; Current observations; Correlations; Seasonal variability; Atmospheric boundary layer; Nitrogen dioxide; Seasonal comparisons; Sulfur dioxide; Atmospheric Chemistry; Sulfur; Performance Evaluation; Variability; Estimating; Density; Mixing; Spectrometers; Nitrogen; ANW, USA, Maryland, Baltimore; ANW, USA, Virginia DO - http://dx.doi.org/10.1007/s10874-013-9257-6 ER - TY - JOUR T1 - Spatial and temporal variability of ozone and nitrogen dioxide over a major urban estuarine ecosystem AN - 1751228534; PQ0002368483 AB - Spatial and temporal dynamics in trace gas pollutants were examined over a major urban estuarine ecosystem, using a new network of ground-based Pandora spectrometers deployed at strategic locations along the Washington-Baltimore corridor and the Chesapeake Bay. Total column ozone (TCO sub(3)) and nitrogen dioxide (TCNO sub(2)) were measured during NASA's DISCOVER-AQ and GeoCAPE-CBODAQ campaigns in July 2011. The Pandora network provided high-resolution information on air-quality variability, local pollution conditions, large-scale meteorological influences, and interdependencies of ozone and its major precursor, NO sub(2). Measurements were used to compare with air-quality model simulations (CMAQ), evaluate Aura-OMI satellite retrievals, and assess advantages and limitations of space-based observations under a range of conditions. During the campaign, TCNO sub(2) varied by an order of magnitude, both spatially and temporally. Although fairly constant in rural regions, TCNO sub(2) showed clear diurnal and weekly patterns in polluted urban areas caused by changes in near-surface emissions. With a coarse resolution and an overpass at around 13:30 local time, OMI cannot detect this strong variability in NO sub(2), missing pollution peaks from industrial and rush hour activities. Not as highly variable as NO sub(2), TCO sub(3) was mostly affected by large-scale meteorological patterns as observed by OMI. A clear weekly cycle in TCO sub(3), with minima over the weekend, was due to a combination of weekly weather patterns and changes in near-surface NO sub(x) emissions. A Pandora instrument intercomparison under the same conditions at GSFC showed excellent agreement, within plus or minus 4.8DU for TCO sub(3) and plus or minus 0.07DU for TCNO sub(2) with no air-mass-factor dependence, suggesting that observed variability during the campaign was real. JF - Journal of Atmospheric Chemistry AU - Tzortziou, Maria AU - Herman, Jay R AU - Cede, Alexander AU - Loughner, Christopher P AU - Abuhassan, Nader AU - Naik, Sheenali AD - University of Maryland, Earth System Science Interdisciplinary Center, College Park, MD, 20742, USA, maria.a.tzortziou@nasa.gov Y1 - 2015/09// PY - 2015 DA - September 2015 SP - 287 EP - 309 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 72 IS - 3-4 SN - 0167-7764, 0167-7764 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; Pollution Abstracts KW - Variability KW - Ozone measurements KW - Ecosystems KW - Spatial distribution KW - Remote sensing KW - Air quality KW - Nitrogen dioxide KW - Industrial wastes KW - Pollutants KW - Networks KW - Emissions KW - Brackishwater environment KW - Meteorology KW - Spatial variability KW - Weather Patterns KW - Spectrometers KW - Ozone KW - Weather KW - Diurnal variations KW - Pollution detection KW - Estuaries KW - Brackish KW - Simulation KW - Estuarine ecosystems KW - ANW, USA, Chesapeake Bay KW - Satellites KW - Model Studies KW - Numerical simulations KW - Urban Areas KW - Atmospheric chemistry KW - Nitrogen compounds KW - Oxides KW - Rural areas KW - Nitrogen KW - SW 5010:Network design KW - P 0000:AIR POLLUTION KW - M2 551.468:Coastal Oceanography (551.468) KW - Q2 09244:Air-sea coupling UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1751228534?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Atmospheric+Chemistry&rft.atitle=Spatial+and+temporal+variability+of+ozone+and+nitrogen+dioxide+over+a+major+urban+estuarine+ecosystem&rft.au=Tzortziou%2C+Maria%3BHerman%2C+Jay+R%3BCede%2C+Alexander%3BLoughner%2C+Christopher+P%3BAbuhassan%2C+Nader%3BNaik%2C+Sheenali&rft.aulast=Tzortziou&rft.aufirst=Maria&rft.date=2015-09-01&rft.volume=72&rft.issue=3-4&rft.spage=287&rft.isbn=&rft.btitle=&rft.title=Journal+of+Atmospheric+Chemistry&rft.issn=01677764&rft_id=info:doi/10.1007%2Fs10874-013-9255-8 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-12-01 N1 - Number of references - 59 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Industrial wastes; Pollution detection; Pollutants; Estuaries; Brackishwater environment; Nitrogen compounds; Oxides; Nitrogen; Ozone; Ozone measurements; Numerical simulations; Atmospheric chemistry; Spatial variability; Spectrometers; Diurnal variations; Weather; Spatial distribution; Remote sensing; Simulation; Estuarine ecosystems; Air quality; Satellites; Nitrogen dioxide; Emissions; Meteorology; Rural areas; Variability; Ecosystems; Urban Areas; Networks; Model Studies; Weather Patterns; ANW, USA, Chesapeake Bay; Brackish DO - http://dx.doi.org/10.1007/s10874-013-9255-8 ER - TY - JOUR T1 - Implementation of microchip electrophoresis instrumentation for future spaceflight missions AN - 1746887692; PQ0002075088 AB - We present a comprehensive discussion of the role that microchip electrophoresis (ME) instrumentation could play in future NASA missions of exploration, as well as the current barriers that must be overcome to make this type of chemical investigation possible. We describe how ME would be able to fill fundamental gaps in our knowledge of the potential for past, present, or future life beyond Earth. Despite the great promise of ME for ultrasensitive portable chemical analysis, to date, it has never been used on a robotic mission of exploration to another world. We provide a current snapshot of the technology readiness level (TRL) of ME instrumentation, where the TRL is the NASA systems engineering metric used to evaluate the maturity of technology, and its fitness for implementation on missions. We explain how the NASA flight implementation process would apply specifically to ME instrumentation, and outline the scientific and technology development issues that must be addressed for ME analyses to be performed successfully on another world. We also outline research demonstrations that could be accomplished by independent researchers to help advance the TRL of ME instrumentation for future exploration missions. The overall approach described here for system development could be readily applied to a wide range of other instrumentation development efforts having broad societal and commercial impact. JF - Analytical and Bioanalytical Chemistry AU - Willis, Peter A AU - Creamer, Jessica S AU - Mora, Maria F AD - Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA, 91109, USA, peter.a.willis@jpl.nasa.gov PY - 2015 SP - 6939 EP - 6963 PB - Springer Science+Business Media, Berlin/Heidelberg Germany VL - 407 IS - 23 SN - 1618-2642, 1618-2642 KW - Aqualine Abstracts; Water Resources Abstracts KW - Electrophoresis KW - Barriers KW - Instrumentation KW - Chemical Analysis KW - Systems Engineering KW - Exploration KW - AQ 00001:Water Resources and Supplies KW - SW 5040:Data acquisition UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1746887692?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Analytical+and+Bioanalytical+Chemistry&rft.atitle=Implementation+of+microchip+electrophoresis+instrumentation+for+future+spaceflight+missions&rft.au=Willis%2C+Peter+A%3BCreamer%2C+Jessica+S%3BMora%2C+Maria+F&rft.aulast=Willis&rft.aufirst=Peter&rft.date=2015-09-01&rft.volume=407&rft.issue=23&rft.spage=6939&rft.isbn=&rft.btitle=&rft.title=Analytical+and+Bioanalytical+Chemistry&rft.issn=16182642&rft_id=info:doi/10.1007%2Fs00216-015-8903-z LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-12-01 N1 - Number of references - 156 N1 - Last updated - 2016-01-21 N1 - SubjectsTermNotLitGenreText - Systems Engineering; Barriers; Electrophoresis; Instrumentation; Chemical Analysis; Exploration DO - http://dx.doi.org/10.1007/s00216-015-8903-z ER - TY - JOUR T1 - A CloudSat-CALIPSO View of Cloud and Precipitation Properties across Cold Fronts over the Global Oceans AN - 1722175849; PQ0002014854 AB - The distribution of cloud and precipitation properties across oceanic extratropical cyclone cold fronts is examined using four years of combined CloudSat radar and CALIPSO lidar retrievals. The global annual mean cloud and precipitation distributions show that low-level clouds are ubiquitous in the postfrontal zone while higher-level cloud frequency and precipitation peak in the warm sector along the surface front. Increases in temperature and moisture within the cold front region are associated with larger high-level but lower mid-/low-level cloud frequencies and precipitation decreases in the cold sector. This behavior seems to be related to a shift from stratiform to convective clouds and precipitation. Stronger ascent in the warm conveyor belt tends to enhance cloudiness and precipitation across the cold front. A strong temperature contrast between the warm and cold sectors also encourages greater post-cold-frontal cloud occurrence. While the seasonal contrasts in environmental temperature, moisture, and ascent strength are enough to explain most of the variations in cloud and precipitation across cold fronts in both hemispheres, they do not fully explain the differences between Northern and Southern Hemisphere cold fronts. These differences are better explained when the impact of the contrast in temperature across the cold front is also considered. In addition, these large-scale parameters do not explain the relatively large frequency in springtime postfrontal precipitation. JF - Journal of Climate AU - Naud, Catherine M AU - Posselt, Derek J AU - van den Heever, Susan C AD - Department of Applied Physics and Applied Mathematics, Columbia University, and NASA Goddard Institute for Space Studies, New York, New York Y1 - 2015/09// PY - 2015 DA - September 2015 SP - 6743 EP - 6762 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 28 IS - 17 SN - 0894-8755, 0894-8755 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Clouds KW - Cold fronts KW - Fronts KW - Precipitation KW - Warm fronts KW - Cyclones KW - Moisture KW - Cloud frequencies KW - Postfrontal precipitation KW - CLOUDSAT KW - Cloudiness KW - Ocean-atmosphere system KW - Precipitation distribution KW - Annual Distribution KW - Extratropical cyclones KW - Marine KW - Weather KW - Climates KW - Temperature KW - Cloud cover KW - Oceans KW - Lidar applications KW - Radar KW - Convective activity KW - Global warming KW - Atmospheric fronts KW - LIDAR KW - Q2 09393:Remote geosensing KW - SW 0810:General KW - M2 551.58:Climatology (551.58) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1722175849?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Climate&rft.atitle=A+CloudSat-CALIPSO+View+of+Cloud+and+Precipitation+Properties+across+Cold+Fronts+over+the+Global+Oceans&rft.au=Naud%2C+Catherine+M%3BPosselt%2C+Derek+J%3Bvan+den+Heever%2C+Susan+C&rft.aulast=Naud&rft.aufirst=Catherine&rft.date=2015-09-01&rft.volume=28&rft.issue=17&rft.spage=6743&rft.isbn=&rft.btitle=&rft.title=Journal+of+Climate&rft.issn=08948755&rft_id=info:doi/10.1175%2FJCLI-D-15-0052.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-10-01 N1 - Number of references - 42 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Ocean-atmosphere system; Atmospheric fronts; Cloud cover; LIDAR; Cloud frequencies; Precipitation; Postfrontal precipitation; Clouds; Cold fronts; Fronts; CLOUDSAT; Convective activity; Radar; Lidar applications; Cloudiness; Global warming; Precipitation distribution; Extratropical cyclones; Cyclones; Moisture; Weather; Oceans; Climates; Temperature; Annual Distribution; Marine DO - http://dx.doi.org/10.1175/JCLI-D-15-0052.1 ER - TY - JOUR T1 - A 12,000-yr pollen record off Cape Hatteras; pollen sources and mechanisms of pollen dispersion AN - 1722153847; 2015-098602 AB - Integrating both marine and terrestrial signals from the same sediment core is one of the primary challenges for understanding the role of ocean-atmosphere coupling throughout past climate changes. It is therefore vital to understand how the pollen signal of a given marine record reflects the vegetation changes of the neighboring continent. The comparison between the pollen record of marine core JPC32 (KNR178JPC32) and available terrestrial pollen sequences from eastern North America over the last 12,170 years indicates that the pollen signature off Cape Hatteras gives an integrated image of the regional vegetation encompassing the Pee Dee river, Chesapeake and Delaware hydrographic basins and is reliable in reconstructing the past climate of the adjacent continent. Extremely high quantities of pollen grains included in the marine sediments off Cape Hatteras were transferred from the continent to the sea, at intervals 10,100-8800 cal yr BP, 8300-7500 cal yr BP, 5800-4300 cal yr BP and 2100-730 cal yr BP, during storm events favored by episodes of rapid sea-level rise in the eastern coast of US. In contrast, pollen grains export was reduced during 12,170-10,150 cal yr BP and 4200-2200 cal yr BP, during episodes of intense continental dryness and slow sea level rise episodes or lowstands in the eastern coast of US. The near absence of reworked pollen grains in core JPC32 contrasts with the high quantity of reworked material in nearby but deeper located marine sites, suggesting that the JPC32 record was not affected by the Deep Western Boundary Current (DWBC) since the end of the Younger Dryas and should be considered a key site for studying past climate changes in the western North Atlantic. Abstract Copyright (2015) Elsevier, B.V. JF - Marine Geology AU - Naughton, F AU - Keigwin, L AU - Peteet, D AU - Costas, S AU - Desprat, S AU - Oliveira, D AU - de Vernal, A AU - Voelker, A AU - Abrantes, F Y1 - 2015/09/01/ PY - 2015 DA - 2015 Sep 01 SP - 118 EP - 129 PB - Elsevier, Amsterdam VL - 367 SN - 0025-3227, 0025-3227 KW - United States KW - Cape Hatteras KW - isotopes KW - Dare County North Carolina KW - vegetation KW - paleoclimatology KW - Holocene KW - cores KW - paleoecology KW - upper Pleistocene KW - Cenozoic KW - marine sediments KW - radioactive isotopes KW - pollen KW - dates KW - carbon KW - sediments KW - absolute age KW - miospores KW - Northwest Atlantic KW - Quaternary KW - chronostratigraphy KW - biostratigraphy KW - pollen diagrams KW - spores KW - palynomorphs KW - North Carolina KW - Pleistocene KW - reconstruction KW - C-14 KW - North Atlantic KW - microfossils KW - Atlantic Ocean KW - 24:Quaternary geology KW - 03:Geochronology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1722153847?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Marine+Geology&rft.atitle=A+12%2C000-yr+pollen+record+off+Cape+Hatteras%3B+pollen+sources+and+mechanisms+of+pollen+dispersion&rft.au=Naughton%2C+F%3BKeigwin%2C+L%3BPeteet%2C+D%3BCostas%2C+S%3BDesprat%2C+S%3BOliveira%2C+D%3Bde+Vernal%2C+A%3BVoelker%2C+A%3BAbrantes%2C+F&rft.aulast=Naughton&rft.aufirst=F&rft.date=2015-09-01&rft.volume=367&rft.issue=&rft.spage=118&rft.isbn=&rft.btitle=&rft.title=Marine+Geology&rft.issn=00253227&rft_id=info:doi/10.1016%2Fj.margeo.2015.06.003 L2 - http://www.sciencedirect.com/science/journal/00253227 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2015-01-01 N1 - Number of references - 120 N1 - Document feature - illus. incl. 2 tables, sketch map N1 - Last updated - 2015-10-15 N1 - CODEN - MAGEA6 N1 - SubjectsTermNotLitGenreText - absolute age; Atlantic Ocean; biostratigraphy; C-14; Cape Hatteras; carbon; Cenozoic; chronostratigraphy; cores; Dare County North Carolina; dates; Holocene; isotopes; marine sediments; microfossils; miospores; North Atlantic; North Carolina; Northwest Atlantic; paleoclimatology; paleoecology; palynomorphs; Pleistocene; pollen; pollen diagrams; Quaternary; radioactive isotopes; reconstruction; sediments; spores; United States; upper Pleistocene; vegetation DO - http://dx.doi.org/10.1016/j.margeo.2015.06.003 ER - TY - JOUR T1 - Sustainable Groundwater Management in the Arid Southwestern US: Coachella Valley, California AN - 1712773933; PQ0001973977 AB - Sustainable groundwater management requires approaches to assess the influence of climate and management actions on the evolution of groundwater systems. Traditional approaches that apply continuity to assess groundwater sustainability fail to capture the spatial variability of aquifer responses. To address this gap, our study evaluates groundwater elevation data from the Coachella Valley, California, within a groundwater sustainability framework given the adoption of integrative management strategies in the valley. Our study details an innovative approach employing traditional statistical methods to improve understanding of aquifer responses. In this analysis, we evaluate trends at individual groundwater observation wells and regional groundwater behaviors using field significance. Regional elevation trends identified no significant trends during periods of intense groundwater replenishment, active since 1973, despite spatial variability in individual well trends. Our results illustrate the spatially limited effects of groundwater replenishment occur against a setting of long-term groundwater depletion, raising concerns over the definition of sustainable groundwater management in aquifer systems employing integrative management strategies. JF - Water Resources Management AU - Thomas, Brian F AU - Famiglietti, James S AD - Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, 91109, USA, Brian.F.Thomas@jpl.nasa.gov Y1 - 2015/09// PY - 2015 DA - September 2015 SP - 4411 EP - 4426 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 29 IS - 12 SN - 0920-4741, 0920-4741 KW - Environment Abstracts; Meteorological & Geoastrophysical Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Sustainability Science Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - Aquifers KW - Aquifer KW - Variability KW - Resource management KW - Groundwater management KW - Aquifer systems KW - Statistical analysis KW - Water resources KW - USA, California, Coachella Valley KW - Spatial variations KW - Observation Wells KW - Groundwater depletion KW - INE, USA, California KW - Ground water KW - Groundwater Management KW - Replenishment KW - Spatial variability KW - Innovations KW - Water resources management KW - Climates KW - Climate KW - Illustrations KW - Identification KW - Valleys KW - Sustainability KW - Behavior KW - Water management KW - Elevation KW - Groundwater KW - Evolution KW - Q2 09243:Structure, mechanics and thermodynamics KW - AQ 00001:Water Resources and Supplies KW - M3 1010:Issues in Sustainable Development KW - M2 556.18:Water Management (556.18) KW - ENA 16:Renewable Resources-Water KW - SW 6010:Structures UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1712773933?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Water+Resources+Management&rft.atitle=Sustainable+Groundwater+Management+in+the+Arid+Southwestern+US%3A+Coachella+Valley%2C+California&rft.au=Thomas%2C+Brian+F%3BFamiglietti%2C+James+S&rft.aulast=Thomas&rft.aufirst=Brian&rft.date=2015-09-01&rft.volume=29&rft.issue=12&rft.spage=4411&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Management&rft.issn=09204741&rft_id=info:doi/10.1007%2Fs11269-015-1067-y LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-09-01 N1 - Number of references - 69 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Spatial variations; Aquifer; Resource management; Water management; Illustrations; Ground water; Water resources; Identification; Aquifers; Groundwater depletion; Water resources management; Aquifer systems; Groundwater management; Statistical analysis; Spatial variability; Behavior; Climate; Groundwater; Valleys; Sustainability; Innovations; Observation Wells; Variability; Climates; Elevation; Replenishment; Groundwater Management; Evolution; INE, USA, California; USA, California, Coachella Valley DO - http://dx.doi.org/10.1007/s11269-015-1067-y ER - TY - JOUR T1 - Modeling of turbulent free shear flows AN - 1765965937; PQ0002160808 AB - The modeling of turbulent free shear flows is crucial to the simulation of many aerospace applications, yet often receives less attention than the modeling of wall boundary layers. Thus, while turbulence model development in general has proceeded very slowly in the past twenty years, progress for free shear flows has been even more so. This paper highlights some of the fundamental issues in modeling free shear flows for propulsion applications, presents a review of past modeling efforts, and identifies areas where further research is needed. Among the topics discussed are differences between planar and axisymmetric flows, development versus self-similar regions, the effect of compressibility and the evolution of compressibility corrections, the effect of temperature on jets, and the significance of turbulent Prandtl and Schmidt numbers for reacting shear flows. Large-eddy simulation greatly reduces the amount of empiricism in the physical modeling, but is sensitive to a number of numerical issues. This paper includes an overview of the importance of numerical scheme, mesh resolution, boundary treatment, sub-grid modeling, and filtering in conducting a successful simulation. JF - Computers & Fluids AU - Yoder, D A AU - DeBonis, J R AU - Georgiadis, N J AD - NASA Glenn Research Center, 21000 Brookpark Rd., Cleveland, OH 44135, United States, james.r.debonis@nasa.gov Y1 - 2015/08/31/ PY - 2015 DA - 2015 Aug 31 SP - 212 EP - 232 PB - Elsevier B.V., P.O. Box 800 Kidlington Oxford OX5 1DX United Kingdom VL - 117 SN - 0045-7930, 0045-7930 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Jet flow KW - Mixing layers KW - Turbulence models KW - Compressibility effects KW - Temperature effects KW - Propulsion KW - Shear KW - Shear flow KW - Marine KW - Jets KW - Computers KW - Oceanic eddies KW - turbulence KW - Model Studies KW - Reviews KW - Boundary layers KW - Boundaries KW - Compressibility KW - Turbulent boundary layer KW - Evolution KW - Abiotic factors KW - Modelling KW - SW 0810:General KW - Q2 09183:Physics and chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765965937?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Computers+%26+Fluids&rft.atitle=Modeling+of+turbulent+free+shear+flows&rft.au=Yoder%2C+D+A%3BDeBonis%2C+J+R%3BGeorgiadis%2C+N+J&rft.aulast=Yoder&rft.aufirst=D&rft.date=2015-08-31&rft.volume=117&rft.issue=&rft.spage=212&rft.isbn=&rft.btitle=&rft.title=Computers+%26+Fluids&rft.issn=00457930&rft_id=info:doi/10.1016%2Fj.compfluid.2015.05.009 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-02-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Temperature effects; Shear flow; Boundary layers; Compressibility; Oceanic eddies; Turbulent boundary layer; Modelling; Abiotic factors; Shear; Computers; Reviews; Jets; Boundaries; turbulence; Evolution; Model Studies; Marine DO - http://dx.doi.org/10.1016/j.compfluid.2015.05.009 ER - TY - NEWS T1 - NASA Aircraft to Begin NOAA Hurricane Mission AN - 1708134911 JF - UPI Space Daily AU - Kate Squires for Armstrong Flight Research Center Y1 - 2015/08/31/ PY - 2015 DA - 2015 Aug 31 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1708134911?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=NASA+Aircraft+to+Begin+NOAA+Hurricane+Mission&rft.au=Kate+Squires+for+Armstrong+Flight+Research+Center&rft.aulast=Kate+Squires+for+Armstrong+Flight+Research+Center&rft.aufirst=&rft.date=2015-08-31&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-08-31 ER - TY - JOUR T1 - Petrologic and impact size controls on Precambrian spherule diameters AN - 1718051883; 2015-096612 AB - Spherules from three impact layers ranging in age from 3.24 Ga to 2.49 Ga display petrologic and size diversity. All of these layers represent the distal debris from asteroid impacts in the Archean and early Proterozoic. We examine the petrologic control on the size of these spherules. Though all three spherule layers have different diagenetic histories, some textural properties are consistent in all of the layers and can be used to infer original mineralogy. Spherules that are uniform in composition, with the exception of fine-grained minerals around the rims, are inferred to have been altered from an original glassy composition and are the largest spherules. Spherules that are heterogeneous and contain either pseudomorphs of olivine or contain Ni-chromite are the smallest spherules in all sections. Spherules with plagioclase pseudomorphs tend to be intermediate in size. The larger the impact, the more pronounced is the size segregation of these spherule types. Spherules in the older S3 layer from the Barberton greenstone belt are significantly larger and display a wider range of sizes, and these differences in sizes are related to their petrologic type compared to the younger Dales Gorge and Paraburdoo layers from the Hamersley Basin. The S3 layer also tends to have the largest aggregate bed thickness and Ir content, consistent with this bed resulting from a larger impactor. The Dales Gorge spherule layer contains nonspherical particles, indicative of a ballistic melt, and it is therefore used as a point of comparison with the vapor plume condensates of the S3 and Paraburdoo layers. The Dales Gorge spherules are similar in size to those of the Paraburdoo layer; however, they have a significantly higher percentage of largely glassy spherules, and only approximately 21% have crystalline pseudomorphs. JF - Special Paper - Geological Society of America AU - Krull Davatzes, Alexandra AU - Swartz, Nicholas AU - Enos, Matthew Y1 - 2015/08/28/ PY - 2015 DA - 2015 Aug 28 SP - 115 EP - 125, 12 PB - Geological Society of America (GSA), Boulder, CO VL - 518 SN - 0072-1077, 0072-1077 KW - silicates KW - upper Precambrian KW - Western Australia KW - olivine group KW - Dales Gorge KW - pseudomorphism KW - olivine KW - metamorphic rocks KW - orthosilicates KW - oxides KW - Australia KW - Archean KW - Barberton greenstone belt KW - glass materials KW - spherules KW - Hamersley Basin KW - Precambrian KW - impactites KW - Australasia KW - statistical analysis KW - chromite KW - Proterozoic KW - impacts KW - size KW - nesosilicates KW - Paraburdoo Australia KW - metals KW - fine-grained materials KW - Southern Africa KW - nickel KW - petrography KW - Africa KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1718051883?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Special+Paper+-+Geological+Society+of+America&rft.atitle=Petrologic+and+impact+size+controls+on+Precambrian+spherule+diameters&rft.au=Krull+Davatzes%2C+Alexandra%3BSwartz%2C+Nicholas%3BEnos%2C+Matthew&rft.aulast=Krull+Davatzes&rft.aufirst=Alexandra&rft.date=2015-08-28&rft.volume=518&rft.issue=&rft.spage=115&rft.isbn=&rft.btitle=&rft.title=Special+Paper+-+Geological+Society+of+America&rft.issn=00721077&rft_id=info:doi/10.1130%2F2015.2518%2807%29 L2 - http://specialpapers.gsapubs.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2015-01-01 N1 - Number of references - 36 N1 - PubXState - CO N1 - Document feature - illus. incl. 4 tables N1 - SuppNotes - Online First N1 - Last updated - 2015-12-17 N1 - CODEN - GSAPAZ N1 - SubjectsTermNotLitGenreText - Africa; Archean; Australasia; Australia; Barberton greenstone belt; chromite; Dales Gorge; fine-grained materials; glass materials; Hamersley Basin; impactites; impacts; metals; metamorphic rocks; nesosilicates; nickel; olivine; olivine group; orthosilicates; oxides; Paraburdoo Australia; petrography; Precambrian; Proterozoic; pseudomorphism; silicates; size; Southern Africa; spherules; statistical analysis; upper Precambrian; Western Australia DO - http://dx.doi.org/10.1130/2015.2518(07) ER - TY - JOUR T1 - Scaling impact crater dimensions in cohesive rock by numerical modeling and laboratory experiments AN - 1718051860; 2015-096613 AB - Laboratory and numerical cratering experiments into sandstone and quartzite targets were carried out under conditions ranging from pure strength- to pure gravity-dominated crater formation. Numerical models were used to expand the process of crater formation beyond the strength-dominated laboratory impact experiments up to the gravity regime. We focused on the effect of strength and porosity on crater size and determined scaling parameters for two cohesive materials, sandstone and quartzite, over a range of crater sizes from the laboratory scale to large terrestrial craters. Crater volumes and diameters of experimental and modeling data were measured, and scaling laws were then used to determine mu values for these data in the strength and gravity regimes. These mu values range between 0.48 and 0.55 for sandstone and between 0.49 and 0.64 for quartzite. The scaled crater dimensions in numerical models agree quite well with experimental observations. An accurate definition of the strength parameter in pi-group scaling is crucial for predicting the crater size, in particular, in the transitional regime from strength to gravity scaling. We determined an effective strength value that accounts for the weakening of target material due to the accumulation of damage. Using the numerical models, we found an effective strength of 4.6 kPa for quartzite and 3.2 kPa for sandstone, which are almost five orders smaller than the quasi-static experimental strength values that only account for the intact state of the target material. JF - Special Paper - Geological Society of America AU - Gueldemeister, N AU - Wuennemann, K AU - Poelchau, M H Y1 - 2015/08/28/ PY - 2015 DA - 2015 Aug 28 SP - 17 EP - 29, 15 PB - Geological Society of America (GSA), Boulder, CO VL - 518 SN - 0072-1077, 0072-1077 KW - scale factor KW - experimental studies KW - numerical models KW - impact features KW - strength KW - sandstone KW - quartzites KW - mathematical models KW - equations KW - impacts KW - porosity KW - size KW - laboratory studies KW - sedimentary rocks KW - metamorphic rocks KW - impact craters KW - clastic rocks KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1718051860?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Special+Paper+-+Geological+Society+of+America&rft.atitle=Scaling+impact+crater+dimensions+in+cohesive+rock+by+numerical+modeling+and+laboratory+experiments&rft.au=Gueldemeister%2C+N%3BWuennemann%2C+K%3BPoelchau%2C+M+H&rft.aulast=Gueldemeister&rft.aufirst=N&rft.date=2015-08-28&rft.volume=518&rft.issue=&rft.spage=17&rft.isbn=&rft.btitle=&rft.title=Special+Paper+-+Geological+Society+of+America&rft.issn=00721077&rft_id=info:doi/10.1130%2F2015.2518%2802%29 L2 - http://specialpapers.gsapubs.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2015-01-01 N1 - Number of references - 32 N1 - PubXState - CO N1 - Document feature - illus. incl. 3 tables N1 - SuppNotes - Online First N1 - Last updated - 2015-12-17 N1 - CODEN - GSAPAZ N1 - SubjectsTermNotLitGenreText - clastic rocks; equations; experimental studies; impact craters; impact features; impacts; laboratory studies; mathematical models; metamorphic rocks; numerical models; porosity; quartzites; sandstone; scale factor; sedimentary rocks; size; strength DO - http://dx.doi.org/10.1130/2015.2518(02) ER - TY - JOUR T1 - Large meteorite impacts and planetary evolution; V AN - 1718049607; 2015-096611 JF - Special Paper - Geological Society of America Y1 - 2015/08/28/ PY - 2015 DA - 2015 Aug 28 PB - Geological Society of America (GSA), Boulder, CO VL - 518 SN - 0072-1077, 0072-1077 KW - terrestrial planets KW - planets KW - Earth KW - impact features KW - Mars KW - impact craters KW - impacts KW - 23:Geomorphology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1718049607?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Special+Paper+-+Geological+Society+of+America&rft.atitle=Large+meteorite+impacts+and+planetary+evolution%3B+V&rft.au=&rft.aulast=&rft.aufirst=&rft.date=2015-08-28&rft.volume=518&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Special+Paper+-+Geological+Society+of+America&rft.issn=00721077&rft_id=info:doi/ L2 - http://specialpapers.gsapubs.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2015-01-01 N1 - PubXState - CO N1 - SuppNotes - Individual papers are cited separately; Online First N1 - Last updated - 2015-10-01 N1 - CODEN - GSAPAZ N1 - SubjectsTermNotLitGenreText - Earth; impact craters; impact features; impacts; Mars; planets; terrestrial planets ER - TY - JOUR T1 - Community-acquired Pneumonia Caused by Macrolide-resistant Mycoplasma pneumoniae in Adults AN - 1794503386; PQ0002940641 AB - We herein describe a case of community-acquired pneumonia caused by macrolide-resistant Mycoplasma pneumoniae (MRMP) in an adult who responded poorly to macrolide antibiotics, progressively deteriorated to acute respiratory failure and then responded effectively to a fluoroquinolone. In a series of 14 patients with M. pneumoniae pneumonia, 11 were infected with MRMP. In seven of the eight cases of MRMP initially treated with macrolides, the patients did not improve, and a marked improvement was observed only after the antibiotic regimen was modified to include fluoroquinolones or tetracyclines. Nationwide surveillance should provide important information regarding the prevalence and empirical treatment of MRMP infection in adults. JF - Internal Medicine (Tokyo, 1992) AU - Hanada, Shigeo AU - Morozumi, Miyuki AU - Takahashi, Yui AU - Mochizuki, Sayaka AU - Sato, Toshitaka AU - Suzuki, Shinko AU - Uruga, Hironori AU - Takaya, Hisashi AU - Miyamoto, Atsushi AU - Morokawa, Nasa AU - Ubukata, Kimiko AU - Kishi, Kazuma Y1 - 2015/08/20/ PY - 2015 DA - 2015 Aug 20 SP - 1675 EP - 1678 PB - Nihon Naika Gakkai VL - 53 IS - 15 SN - 0918-2918, 0918-2918 KW - Microbiology Abstracts B: Bacteriology KW - community-acquired pneumonia KW - macrolide KW - Mycoplasma pneumoniae KW - Fluoroquinolones KW - Infection KW - Macrolide antibiotics KW - Tetracyclines KW - Pneumonia KW - J 02400:Human Diseases UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1794503386?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Internal+Medicine+%28Tokyo%2C+1992%29&rft.atitle=Community-acquired+Pneumonia+Caused+by+Macrolide-resistant+Mycoplasma+pneumoniae+in+Adults&rft.au=Hanada%2C+Shigeo%3BMorozumi%2C+Miyuki%3BTakahashi%2C+Yui%3BMochizuki%2C+Sayaka%3BSato%2C+Toshitaka%3BSuzuki%2C+Shinko%3BUruga%2C+Hironori%3BTakaya%2C+Hisashi%3BMiyamoto%2C+Atsushi%3BMorokawa%2C+Nasa%3BUbukata%2C+Kimiko%3BKishi%2C+Kazuma&rft.aulast=Hanada&rft.aufirst=Shigeo&rft.date=2015-08-20&rft.volume=53&rft.issue=15&rft.spage=1675&rft.isbn=&rft.btitle=&rft.title=Internal+Medicine+%28Tokyo%2C+1992%29&rft.issn=09182918&rft_id=info:doi/10.2169%2Finternalmedicine.53.1418 L2 - https://www.jstage.jst.go.jp/article/internalmedicine/53/15/53_53.1418/_article LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-06-01 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Fluoroquinolones; Tetracyclines; Macrolide antibiotics; Infection; Pneumonia; Mycoplasma pneumoniae DO - http://dx.doi.org/10.2169/internalmedicine.53.1418 ER - TY - JOUR T1 - Growing the gas-giant planets by the gradual accumulation of pebbles AN - 1722156865; 2015-099288 JF - Nature (London) AU - Levison, Harold F AU - Kretke, Katherine A AU - Duncan, Martin J Y1 - 2015/08/20/ PY - 2015 DA - 2015 Aug 20 SP - 322 EP - 324 PB - Macmillan Journals, London VL - 524 IS - 7565 SN - 0028-0836, 0028-0836 KW - accretion KW - Jupiter KW - planetesimals KW - simulation KW - giant planets KW - models KW - Saturn KW - planets KW - planetary interiors KW - planetology KW - interplanetary comparison KW - outer planets KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1722156865?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nature+%28London%29&rft.atitle=Growing+the+gas-giant+planets+by+the+gradual+accumulation+of+pebbles&rft.au=Levison%2C+Harold+F%3BKretke%2C+Katherine+A%3BDuncan%2C+Martin+J&rft.aulast=Levison&rft.aufirst=Harold&rft.date=2015-08-20&rft.volume=524&rft.issue=7565&rft.spage=322&rft.isbn=&rft.btitle=&rft.title=Nature+%28London%29&rft.issn=00280836&rft_id=info:doi/10.1038%2Fnature14675 L2 - http://www.nature.com/nature/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 21 N1 - Document feature - illus. N1 - Last updated - 2015-10-15 N1 - CODEN - NATUAS N1 - SubjectsTermNotLitGenreText - accretion; giant planets; interplanetary comparison; Jupiter; models; outer planets; planetary interiors; planetesimals; planetology; planets; Saturn; simulation DO - http://dx.doi.org/10.1038/nature14675 ER - TY - JOUR T1 - On the size and velocity distribution of cosmic dust particles entering the atmosphere AN - 1800392982; 2016-057247 AB - The size and velocity distribution of cosmic dust particles entering the Earth's atmosphere is uncertain. Here we show that the relative concentrations of metal atoms in the upper mesosphere, and the surface accretion rate of cosmic spherules, provide sensitive probes of this distribution. Three cosmic dust models are selected as case studies: two are astronomical models, the first constrained by infrared observations of the Zodiacal Dust Cloud and the second by radar observations of meteor head echoes; the third model is based on measurements made with a spaceborne dust detector. For each model, a Monte Carlo sampling method combined with a chemical ablation model is used to predict the ablation rates of Na, K, Fe, Mg, and Ca above 60 km and cosmic spherule production rate. It appears that a significant fraction of the cosmic dust consists of small (<5 mu g) and slow (<15 km s (super -1) ) particles. Abstract Copyright (2015), . The Authors. JF - Geophysical Research Letters AU - Carrillo-Sanchez, J D AU - Plane, J M C AU - Feng, W AU - Nesvorny, D AU - Janches, D Y1 - 2015/08/16/ PY - 2015 DA - 2015 Aug 16 SP - 6518 EP - 6525 PB - American Geophysical Union, Washington, DC VL - 42 IS - 15 SN - 0094-8276, 0094-8276 KW - meteors KW - meteorites KW - cosmic dust KW - infrared methods KW - grain size KW - geophysical methods KW - velocity KW - atmosphere KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800392982?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=On+the+size+and+velocity+distribution+of+cosmic+dust+particles+entering+the+atmosphere&rft.au=Carrillo-Sanchez%2C+J+D%3BPlane%2C+J+M+C%3BFeng%2C+W%3BNesvorny%2C+D%3BJanches%2C+D&rft.aulast=Carrillo-Sanchez&rft.aufirst=J&rft.date=2015-08-16&rft.volume=42&rft.issue=15&rft.spage=6518&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL065149 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 22 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2016-06-30 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - atmosphere; cosmic dust; geophysical methods; grain size; infrared methods; meteorites; meteors; velocity DO - http://dx.doi.org/10.1002/2015GL065149 ER - TY - CPAPER T1 - Site Fidelity and Migrations of Florida Surf Zone Fishes: Does High Mobility Limit Impacts of Beach Renourishment? T2 - 145th Annual Meeting of the American Fisheries Society (AFS 2015) AN - 1731769815; 6358765 JF - 145th Annual Meeting of the American Fisheries Society (AFS 2015) AU - Reyier, Eric AU - Bourtis, Carla AU - Scheidt, Douglas AU - Holloway-Adkins, Karen AU - Lowers, Russell Y1 - 2015/08/16/ PY - 2015 DA - 2015 Aug 16 KW - Mobility KW - USA, Florida KW - Beach nourishment KW - Site fidelity KW - Fish KW - Surf zone KW - Habitat selection KW - Migration UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1731769815?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=145th+Annual+Meeting+of+the+American+Fisheries+Society+%28AFS+2015%29&rft.atitle=Site+Fidelity+and+Migrations+of+Florida+Surf+Zone+Fishes%3A+Does+High+Mobility+Limit+Impacts+of+Beach+Renourishment%3F&rft.au=Reyier%2C+Eric%3BBourtis%2C+Carla%3BScheidt%2C+Douglas%3BHolloway-Adkins%2C+Karen%3BLowers%2C+Russell&rft.aulast=Reyier&rft.aufirst=Eric&rft.date=2015-08-16&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=145th+Annual+Meeting+of+the+American+Fisheries+Society+%28AFS+2015%29&rft.issn=&rft_id=info:doi/ L2 - https://afs.confex.com/afs/2015/webprogram/meeting.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-11-06 N1 - Last updated - 2015-11-09 ER - TY - CPAPER T1 - Gas Supersaturation May Reduce the Survival of Yearling Chinook Salmon in the Lower Columbia River and Ocean Plume T2 - 145th Annual Meeting of the American Fisheries Society (AFS 2015) AN - 1731767317; 6359421 JF - 145th Annual Meeting of the American Fisheries Society (AFS 2015) AU - Brosnan, Ian AU - Welch, David AU - Jacobs, Melinda Y1 - 2015/08/16/ PY - 2015 DA - 2015 Aug 16 KW - Salmon KW - Rivers KW - Juveniles KW - Supersaturation KW - Anadromous species KW - Oceans KW - Survival KW - USA, Columbia R. KW - Plumes KW - Oncorhynchus tshawytscha UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1731767317?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=145th+Annual+Meeting+of+the+American+Fisheries+Society+%28AFS+2015%29&rft.atitle=Gas+Supersaturation+May+Reduce+the+Survival+of+Yearling+Chinook+Salmon+in+the+Lower+Columbia+River+and+Ocean+Plume&rft.au=Brosnan%2C+Ian%3BWelch%2C+David%3BJacobs%2C+Melinda&rft.aulast=Brosnan&rft.aufirst=Ian&rft.date=2015-08-16&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=145th+Annual+Meeting+of+the+American+Fisheries+Society+%28AFS+2015%29&rft.issn=&rft_id=info:doi/ L2 - https://afs.confex.com/afs/2015/webprogram/meeting.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-11-06 N1 - Last updated - 2015-11-09 ER - TY - JOUR T1 - Meteorologically Driven Simulations of Dengue Epidemics in San Juan, PR AN - 1717497741; PQ0001972389 AB - Meteorological factors influence dengue virus ecology by modulating vector mosquito population dynamics, viral replication, and transmission. Dynamic modeling techniques can be used to examine how interactions among meteorological variables, vectors and the dengue virus influence transmission. We developed a dengue fever simulation model by coupling a dynamic simulation model for Aedes aegypti, the primary mosquito vector for dengue, with a basic epidemiological Susceptible-Exposed-Infectious-Recovered (SEIR) model. Employing a Monte Carlo approach, we simulated dengue transmission during the period of 2010-2013 in San Juan, PR, where dengue fever is endemic. The results of 9600 simulations using varied model parameters were evaluated by statistical comparison (r2) with surveillance data of dengue cases reported to the Centers for Disease Control and Prevention. To identify the most influential parameters associated with dengue virus transmission for each period the top 1% of best-fit model simulations were retained and compared. Using the top simulations, dengue cases were simulated well for 2010 (r2 = 0.90, p = 0.03), 2011 (r2 = 0.83, p = 0.05), and 2012 (r2 = 0.94, p = 0.01); however, simulations were weaker for 2013 (r2 = 0.25, p = 0.25) and the entire four-year period (r2 = 0.44, p = 0.002). Analysis of parameter values from retained simulations revealed that rain dependent container habitats were more prevalent in best-fitting simulations during the wetter 2010 and 2011 years, while human managed (i.e. manually filled) container habitats were more prevalent in best-fitting simulations during the drier 2012 and 2013 years. The simulations further indicate that rainfall strongly modulates the timing of dengue (e.g., epidemics occurred earlier during rainy years) while temperature modulates the annual number of dengue fever cases. Our results suggest that meteorological factors have a time-variable influence on dengue transmission relative to other important environmental and human factors. Numerous studies have investigated meteorological and climatic influences on mosquito transmitted viruses. However, dengue ecology is complex, necessitating an understanding of the interactions among components in the system. We estimate dengue fever cases in San Juan, Puerto Rico using a mathematical model informed by relationships among meteorology, land cover, and interactions among human hosts, mosquitoes, and the dengue viruses identified from the literature. Because some of these relationships are not well known or static, we performed several thousand simulations and compared model output to dengue fever cases reported to the Centers for Diseases Control and Prevention. The model replicated reported dengue cases well, but factors related to dengue transmission patterns varied between years. During wetter years, precipitation-filled containers were the primary immature mosquito habitat in the model. Conversely, during drier years, containers filled with water by humans were the most important habitat. In warmer years there was an increased number of dengue cases that peaked following higher rainfall. These results reveal that current climatic conditions modify the relative influence of human and climatic factors on dengue transmission patterns. This knowledge can be used to develop forecasting tools for dengue outbreaks and enhance mosquito control campaigns based on weather predictions. JF - PLoS Neglected Tropical Diseases AU - Morin, Cory W AU - Monaghan, Andrew J AU - Hayden, Mary H AU - Barrera, Roberto AU - Ernst, Kacey AD - Earth Science Office, NASA Marshall Space Flight Center, Huntsville, Alabama, United States of America Y1 - 2015/08/14/ PY - 2015 DA - 2015 Aug 14 PB - Public Library of Science, 185 Berry Street San Francisco CA 94107 United States VL - 9 IS - 8 SN - 1935-2727, 1935-2727 KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Meteorological & Geoastrophysical Abstracts; Virology & AIDS Abstracts; Entomology Abstracts KW - Dengue virus KW - Aedes aegypti KW - Human diseases KW - Statistics KW - Rainfall KW - Viruses KW - Statistical analysis KW - Disease control KW - Monte Carlo method KW - Hosts KW - Population dynamics KW - Climatic conditions KW - Models KW - Public health KW - Disease transmission KW - Ecology KW - Dengue KW - Meteorology KW - Weather forecasting KW - Aquatic insects KW - Temperature effects KW - Weather KW - Epidemics KW - Mathematical models KW - Data processing KW - Replication KW - Climate KW - Vectors KW - Pest control KW - Habitat KW - Numerical simulations KW - ASW, Caribbean Sea, Greater Antilles, Puerto Rico KW - Rain KW - Z 05350:Medical, Veterinary, and Agricultural Entomology KW - V 22320:Replication KW - Q1 08604:Stock assessment and management KW - M2 551.578.1:Liquid (551.578.1) KW - Q5 08524:Public health, medicines, dangerous organisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1717497741?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=PLoS+Neglected+Tropical+Diseases&rft.atitle=Meteorologically+Driven+Simulations+of+Dengue+Epidemics+in+San+Juan%2C+PR&rft.au=Morin%2C+Cory+W%3BMonaghan%2C+Andrew+J%3BHayden%2C+Mary+H%3BBarrera%2C+Roberto%3BErnst%2C+Kacey&rft.aulast=Morin&rft.aufirst=Cory&rft.date=2015-08-14&rft.volume=9&rft.issue=8&rft.spage=&rft.isbn=&rft.btitle=&rft.title=PLoS+Neglected+Tropical+Diseases&rft.issn=19352727&rft_id=info:doi/10.1371%2Fjournal.pntd.0004002 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-09-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Human diseases; Climate; Viruses; Disease control; Pest control; Hosts; Aquatic insects; Disease transmission; Public health; Temperature effects; Weather; Data processing; Mathematical models; Epidemics; Statistics; Replication; Rainfall; Statistical analysis; Vectors; Population dynamics; Habitat; Climatic conditions; Models; Dengue; Meteorology; Rain; Ecology; Numerical simulations; Monte Carlo method; Weather forecasting; Dengue virus; Aedes aegypti; ASW, Caribbean Sea, Greater Antilles, Puerto Rico DO - http://dx.doi.org/10.1371/journal.pntd.0004002 ER - TY - JOUR T1 - The Southern Argentina Agile Meteor Radar Orbital System (SAAMER-OS); an initial sporadic meteoroid orbital survey in the southern sky AN - 1832596468; 757446-36 AB - We present an initial survey in the southern sky of the sporadic meteoroid orbital environment obtained with the Southern Argentina Agile MEteor Radar (SAAMER) Orbital System (OS), in which over three-quarters of a million orbits of dust particles were determined from 2012 January through 2015 April. SAAMER-OS is located at the southernmost tip of Argentina and is currently the only operational radar with orbit determination capability providing continuous observations of the southern hemisphere. Distributions of the observed meteoroid speed, radiant, and heliocentric orbital parameters are presented, as well as those corrected by the observational biases associated with the SAAMER-OS operating parameters. The results are compared with those reported by three previous surveys performed with the Harvard Radio Meteor Project, the Advanced Meteor Orbit Radar, and the Canadian Meteor Orbit Radar, and they are in agreement with these previous studies. Weighted distributions for meteoroids above the thresholds for meteor trail electron line density, meteoroid mass, and meteoroid kinetic energy are also considered. Finally, the minimum line density and kinetic energy weighting factors are found to be very suitable for meteroid applications. The outcomes of this work show that, given SAAMER�s location, the system is ideal for providing crucial data to continuously study the South Toroidal and South Apex sporadic meteoroid apparent sources. Copyright (Copyright) 2015. The American Astronomical Society. All rights reserved. JF - The Astrophysical Journal AU - Janches, D AU - Close, S AU - Hormaechea, J L AU - Swarnalingam, N AU - Murphy, A AU - O'Connor, D AU - Vandepeer, B AU - Fuller, B AU - Fritts, D C AU - Brunini, C Y1 - 2015/08/10/ PY - 2015 DA - 2015 Aug 10 EP - Paper no. 36 PB - IOP Publishing for American Astronomical Society, Bristol VL - 809 IS - 1 SN - 0004-637X, 0004-637X KW - Southern Argentina Agile Meteor Radar Orbital System KW - kinetic energy KW - orbits KW - radar methods KW - meteoroids KW - interplanetary dust KW - distribution KW - Southern Hemisphere KW - meteors KW - mass KW - cosmic dust KW - velocity KW - surveys KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832596468?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Astrophysical+Journal&rft.atitle=The+Southern+Argentina+Agile+Meteor+Radar+Orbital+System+%28SAAMER-OS%29%3B+an+initial+sporadic+meteoroid+orbital+survey+in+the+southern+sky&rft.au=Janches%2C+D%3BClose%2C+S%3BHormaechea%2C+J+L%3BSwarnalingam%2C+N%3BMurphy%2C+A%3BO%27Connor%2C+D%3BVandepeer%2C+B%3BFuller%2C+B%3BFritts%2C+D+C%3BBrunini%2C+C&rft.aulast=Janches&rft.aufirst=D&rft.date=2015-08-10&rft.volume=809&rft.issue=1&rft.spage=&rft.isbn=&rft.btitle=&rft.title=The+Astrophysical+Journal&rft.issn=0004637X&rft_id=info:doi/10.1088%2F0004-637X%2F809%2F1%2F36 L2 - http://iopscience.iop.org/0004-637X LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data supplied by IOP Publishing Ltd., London, United Kingdom N1 - Number of references - 74 N1 - Document feature - illus. N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - cosmic dust; distribution; interplanetary dust; kinetic energy; mass; meteoroids; meteors; orbits; radar methods; Southern Argentina Agile Meteor Radar Orbital System; Southern Hemisphere; surveys; velocity DO - http://dx.doi.org/10.1088/0004-637X/809/1/36 ER - TY - CPAPER T1 - Assessing forest edge effects in the southeastern U.S. using NASA's G-LiHT Airborne Imager T2 - 100th Annual Meeting of the Ecological Society of America (ESA 2015) AN - 1731770236; 6363552 JF - 100th Annual Meeting of the Ecological Society of America (ESA 2015) AU - Fagan, Matthew AU - Morton, Douglas AU - Cook, Bruce AU - Masek, Jeff AU - Zhao, Feng AU - Huang, Chengquan AU - Nelson, Ross Y1 - 2015/08/09/ PY - 2015 DA - 2015 Aug 09 KW - Forests KW - Edge effect UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1731770236?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=100th+Annual+Meeting+of+the+Ecological+Society+of+America+%28ESA+2015%29&rft.atitle=Assessing+forest+edge+effects+in+the+southeastern+U.S.+using+NASA%27s+G-LiHT+Airborne+Imager&rft.au=Fagan%2C+Matthew%3BMorton%2C+Douglas%3BCook%2C+Bruce%3BMasek%2C+Jeff%3BZhao%2C+Feng%3BHuang%2C+Chengquan%3BNelson%2C+Ross&rft.aulast=Fagan&rft.aufirst=Matthew&rft.date=2015-08-09&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=100th+Annual+Meeting+of+the+Ecological+Society+of+America+%28ESA+2015%29&rft.issn=&rft_id=info:doi/ L2 - http://eco.confex.com/eco/2015/webprogram/meeting.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-11-06 N1 - Last updated - 2015-11-09 ER - TY - CPAPER T1 - Modeling impacts of climate and land use change on ecosystem processes to quantify exposure to climate change in two Landscape Conservation Cooperatives T2 - 100th Annual Meeting of the Ecological Society of America (ESA 2015) AN - 1731763030; 6361978 JF - 100th Annual Meeting of the Ecological Society of America (ESA 2015) AU - Melton, Forrest AU - Wang, Weile AU - Xiong, Jun AU - Guzman, Alberto AU - Milesi, Cristina AU - Nemani, Rama AU - Goetz, Scott AU - Gross, John AU - Jantz, Patrick AU - Hansen, Andrew AU - Monahan, William AU - Theobald, Dave Y1 - 2015/08/09/ PY - 2015 DA - 2015 Aug 09 KW - Resource management KW - Landscape KW - Climatic changes KW - Cooperatives KW - Conservation KW - Land use UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1731763030?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=100th+Annual+Meeting+of+the+Ecological+Society+of+America+%28ESA+2015%29&rft.atitle=Modeling+impacts+of+climate+and+land+use+change+on+ecosystem+processes+to+quantify+exposure+to+climate+change+in+two+Landscape+Conservation+Cooperatives&rft.au=Melton%2C+Forrest%3BWang%2C+Weile%3BXiong%2C+Jun%3BGuzman%2C+Alberto%3BMilesi%2C+Cristina%3BNemani%2C+Rama%3BGoetz%2C+Scott%3BGross%2C+John%3BJantz%2C+Patrick%3BHansen%2C+Andrew%3BMonahan%2C+William%3BTheobald%2C+Dave&rft.aulast=Melton&rft.aufirst=Forrest&rft.date=2015-08-09&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=100th+Annual+Meeting+of+the+Ecological+Society+of+America+%28ESA+2015%29&rft.issn=&rft_id=info:doi/ L2 - http://eco.confex.com/eco/2015/webprogram/meeting.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-11-06 N1 - Last updated - 2015-11-09 ER - TY - CPAPER T1 - Earth right now: NASA climate indicators for action and assessment T2 - 100th Annual Meeting of the Ecological Society of America (ESA 2015) AN - 1731761484; 6361756 JF - 100th Annual Meeting of the Ecological Society of America (ESA 2015) AU - Lewis, Kristin AU - Tsaoussi, Lucia Y1 - 2015/08/09/ PY - 2015 DA - 2015 Aug 09 KW - Rights KW - Climate UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1731761484?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=100th+Annual+Meeting+of+the+Ecological+Society+of+America+%28ESA+2015%29&rft.atitle=Earth+right+now%3A+NASA+climate+indicators+for+action+and+assessment&rft.au=Lewis%2C+Kristin%3BTsaoussi%2C+Lucia&rft.aulast=Lewis&rft.aufirst=Kristin&rft.date=2015-08-09&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=100th+Annual+Meeting+of+the+Ecological+Society+of+America+%28ESA+2015%29&rft.issn=&rft_id=info:doi/ L2 - http://eco.confex.com/eco/2015/webprogram/meeting.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-11-06 N1 - Last updated - 2015-11-09 ER - TY - JOUR T1 - Operational thermal remote sensing and lava flow monitoring at the Hawaiian Volcano Observatory AN - 1718054585; 2015-093975 AB - Hawaiian volcanoes are highly accessible and well monitored by ground instruments. Nevertheless, observational gaps remain and thermal satellite imagery has proven useful in Hawai'i for providing synoptic views of activity during intervals between field visits. Here we describe the beginning of a thermal remote sensing programme at the US Geological Survey Hawaiian Volcano Observatory (HVO). Whereas expensive receiving stations have been traditionally required to achieve rapid downloading of satellite data, we exploit free, low-latency data sources on the internet for timely access to GOES, MODIS, ASTER and EO-1 ALI imagery. Automated scripts at the observatory download these data and provide a basic display of the images. Satellite data have been extremely useful for monitoring the ongoing lava flow activity on Kilauea's East Rift Zone at Pu'u 'O'o over the past few years. A recent lava flow, named Kahauale'a 2, was upslope from residential subdivisions for over a year. Satellite data helped track the slow advance of the flow and contributed to hazard assessments. Ongoing improvement to thermal remote sensing at HVO incorporates automated hotspot detection, effusion rate estimation and lava flow forecasting, as has been done in Italy. These improvements should be useful for monitoring future activity on Mauna Loa. JF - Special Publication - Geological Society of London AU - Patrick, M R AU - Kauahikaua, J AU - Orr, T AU - Davies, A AU - Ramsey, M Y1 - 2015/08/06/ PY - 2015 DA - 2015 Aug 06 SP - 489 EP - 503, 15 PB - Geological Society of London, London VL - 426 IS - 1 SN - 0305-8719, 0305-8719 KW - United States KW - hot spots KW - imagery KW - Hawaii Island KW - effusion KW - data processing KW - Mauna Loa KW - Earth Observing System KW - volcanism KW - future KW - East Rift Zone KW - Hawaiian Volcano Observatory KW - applications KW - Kilauea KW - ASTER instrument KW - Puu Oo KW - GEOS KW - monitoring KW - lava flows KW - Hawaii County Hawaii KW - geophysical methods KW - prediction KW - Hawaii KW - rates KW - East Pacific Ocean Islands KW - satellite methods KW - volcanic risk KW - detection KW - observatories KW - eruptions KW - Oceania KW - risk assessment KW - Polynesia KW - Kahaualea 2 Flow KW - remote sensing KW - MODIS KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1718054585?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Special+Publication+-+Geological+Society+of+London&rft.atitle=Operational+thermal+remote+sensing+and+lava+flow+monitoring+at+the+Hawaiian+Volcano+Observatory&rft.au=Patrick%2C+M+R%3BKauahikaua%2C+J%3BOrr%2C+T%3BDavies%2C+A%3BRamsey%2C+M&rft.aulast=Patrick&rft.aufirst=M&rft.date=2015-08-06&rft.volume=426&rft.issue=1&rft.spage=489&rft.isbn=&rft.btitle=&rft.title=Special+Publication+-+Geological+Society+of+London&rft.issn=03058719&rft_id=info:doi/10.1144%2FSP426.17 L2 - http://sp.lyellcollection.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from The Geological Society, London, London, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 62 N1 - Document feature - illus. incl. geol. sketch maps N1 - SuppNotes - Online First N1 - Last updated - 2016-09-16 N1 - CODEN - GSLSBW N1 - SubjectsTermNotLitGenreText - applications; ASTER instrument; data processing; detection; Earth Observing System; East Pacific Ocean Islands; East Rift Zone; effusion; eruptions; future; geophysical methods; GEOS; Hawaii; Hawaii County Hawaii; Hawaii Island; Hawaiian Volcano Observatory; hot spots; imagery; Kahaualea 2 Flow; Kilauea; lava flows; Mauna Loa; MODIS; monitoring; observatories; Oceania; Polynesia; prediction; Puu Oo; rates; remote sensing; risk assessment; satellite methods; United States; volcanic risk; volcanism DO - http://dx.doi.org/10.1144/SP426.17 ER - TY - CPAPER T1 - Growing Food for Space and Earth: NASA's Contributions to Vertical Farming T2 - 2015 Annual Conference of the American Society for Horticultural Science (ASHS 2014) AN - 1704507481; 6354185 JF - 2015 Annual Conference of the American Society for Horticultural Science (ASHS 2014) AU - Wheeler, Raymond Y1 - 2015/08/04/ PY - 2015 DA - 2015 Aug 04 KW - Food UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1704507481?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+Annual+Conference+of+the+American+Society+for+Horticultural+Science+%28ASHS+2014%29&rft.atitle=Growing+Food+for+Space+and+Earth%3A+NASA%27s+Contributions+to+Vertical+Farming&rft.au=Wheeler%2C+Raymond&rft.aulast=Wheeler&rft.aufirst=Raymond&rft.date=2015-08-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+Annual+Conference+of+the+American+Society+for+Horticultural+Science+%28ASHS+2014%29&rft.issn=&rft_id=info:doi/ L2 - https://ashs.confex.com/ashs/2015/webprogram/meeting.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-07-31 N1 - Last updated - 2015-08-18 ER - TY - CPAPER T1 - Targeted reforestation to combat declines in connectivity for understory birds in a tropical habitat corridor T2 - 27th International Congress for Conservation Biology and 4th European Congress for Conservation Biology (ICCB-ECCB 2015) AN - 1713518614; 6356432 JF - 27th International Congress for Conservation Biology and 4th European Congress for Conservation Biology (ICCB-ECCB 2015) AU - Fagan, Matthew AU - Defries, R AU - Sesnie, S AU - Arroyo Mora, J AU - Chazdon, R Y1 - 2015/08/02/ PY - 2015 DA - 2015 Aug 02 KW - Aves KW - Habitat corridors KW - Corridor KW - Habitat KW - Reforestation KW - Understory UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1713518614?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=27th+International+Congress+for+Conservation+Biology+and+4th+European+Congress+for+Conservation+Biology+%28ICCB-ECCB+2015%29&rft.atitle=Targeted+reforestation+to+combat+declines+in+connectivity+for+understory+birds+in+a+tropical+habitat+corridor&rft.au=Fagan%2C+Matthew%3BDefries%2C+R%3BSesnie%2C+S%3BArroyo+Mora%2C+J%3BChazdon%2C+R&rft.aulast=Fagan&rft.aufirst=Matthew&rft.date=2015-08-02&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=27th+International+Congress+for+Conservation+Biology+and+4th+European+Congress+for+Conservation+Biology+%28ICCB-ECCB+2015%29&rft.issn=&rft_id=info:doi/ L2 - http://conbio.org/images/content_conferences/WebView-ICCB-ECCB2015Program.pdf LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-09-17 N1 - Last updated - 2015-09-18 ER - TY - JOUR T1 - Advantages to Geoscience and Disaster Response from QuakeSim Implementation of Interferometric Radar Maps in a GIS Database System AN - 1808375007; PQ0001897526 AB - High-resolution maps of earth surface deformation are available in public archives for scientific interpretation, but are primarily available as bulky downloads on the internet. The NASA uninhabited aerial vehicle synthetic aperture radar (UAVSAR) archive of airborne radar interferograms delivers very high resolution images (approximately seven meter pixels) making remote handling of the files that much more pressing. Data exploration requiring data selection and exploratory analysis has been tedious. QuakeSim has implemented an archive of UAVSAR data in a web service and browser system based on GeoServer (http://geoserver.org). This supports a variety of services that supply consistent maps, raster image data and geographic information systems (GIS) objects including standard earthquake faults. Browsing the database is supported by initially displaying GIS-referenced thumbnail images of the radar displacement maps. Access is also provided to image metadata and links for full file downloads. One of the most widely used features is the QuakeSim line-of-sight profile tool, which calculates the radar-observed displacement (from an unwrapped interferogram product) along a line specified through a web browser. Displacement values along a profile are updated to a plot on the screen as the user interactively redefines the endpoints of the line and the sampling density. The profile and also a plot of the ground height are available as CSV (text) files for further examination, without any need to download the full radar file. Additional tools allow the user to select a polygon overlapping the radar displacement image, specify a downsampling rate and extract a modest sized grid of observations for display or for inversion, for example, the QuakeSim simplex inversion tool which estimates a consistent fault geometry and slip model. JF - Pure and Applied Geophysics AU - Parker, Jay AU - Donnellan, Andrea AU - Glasscoe, Margaret AU - Fox, Geoffrey AU - Wang, Jun AU - Pierce, Marlon AU - Ma, Yu AD - Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA, 91109, USA, jay.w.parker@jpl.nasa.gov Y1 - 2015/08// PY - 2015 DA - August 2015 SP - 2295 EP - 2304 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 172 IS - 8 SN - 0033-4553, 0033-4553 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Earthquakes KW - Geologic Fractures KW - Airborne sensing KW - Density KW - Handling KW - Disasters KW - Inversions KW - Databases KW - Synthetic aperture radar KW - Radar KW - Exploration KW - Standards KW - Sampling KW - Archives KW - Geophysics KW - GIS KW - Geographical Information Systems KW - Q2 09103:Information services KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808375007?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Pure+and+Applied+Geophysics&rft.atitle=Advantages+to+Geoscience+and+Disaster+Response+from+QuakeSim+Implementation+of+Interferometric+Radar+Maps+in+a+GIS+Database+System&rft.au=Parker%2C+Jay%3BDonnellan%2C+Andrea%3BGlasscoe%2C+Margaret%3BFox%2C+Geoffrey%3BWang%2C+Jun%3BPierce%2C+Marlon%3BMa%2C+Yu&rft.aulast=Parker&rft.aufirst=Jay&rft.date=2015-08-01&rft.volume=172&rft.issue=8&rft.spage=2295&rft.isbn=&rft.btitle=&rft.title=Pure+and+Applied+Geophysics&rft.issn=00334553&rft_id=info:doi/10.1007%2Fs00024-014-0886-8 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-08-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Earthquakes; Airborne sensing; Synthetic aperture radar; Handling; Disasters; Geophysics; Archives; GIS; Inversions; Databases; Geologic Fractures; Density; Radar; Standards; Exploration; Sampling; Geographical Information Systems DO - http://dx.doi.org/10.1007/s00024-014-0886-8 ER - TY - JOUR T1 - E-DECIDER: Using Earth Science Data and Modeling Tools to Develop Decision Support for Earthquake Disaster Response AN - 1808371508; PQ0001897523 AB - Earthquake Data Enhanced Cyber-Infrastructure for Disaster Evaluation and Response (E-DECIDER) is a NASA-funded project developing new capabilities for decision making utilizing remote sensing data and modeling software to provide decision support for earthquake disaster management and response. E-DECIDER incorporates the earthquake forecasting methodology and geophysical modeling tools developed through NASA's QuakeSim project. Remote sensing and geodetic data, in conjunction with modeling and forecasting tools allows us to provide both long-term planning information for disaster management decision makers as well as short-term information following earthquake events (i.e. identifying areas where the greatest deformation and damage has occurred and emergency services may need to be focused). This in turn is delivered through standards-compliant web services for desktop and hand-held devices. JF - Pure and Applied Geophysics AU - Glasscoe, Margaret T AU - Wang, Jun AU - Pierce, Marlon E AU - Yoder, Mark R AU - Parker, Jay W AU - Burl, Michael C AU - Stough, Timothy M AU - Granat, Robert A AU - Donnellan, Andrea AU - Rundle, John B AU - Ma, Yu AU - Bawden, Gerald W AU - Yuen, Karen AD - Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA, 91109, USA, Margaret.T.Glasscoe@jpl.nasa.gov Y1 - 2015/08// PY - 2015 DA - August 2015 SP - 2305 EP - 2324 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 172 IS - 8 SN - 0033-4553, 0033-4553 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Remote Sensing KW - Earthquakes KW - Prediction KW - Disasters KW - Remote sensing KW - Evaluation KW - Long-term planning KW - Emergencies KW - Forecasting KW - Geophysics KW - Long-term Planning KW - Deformation KW - Modelling KW - SW 0810:General KW - Q2 09124:Coastal zone management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808371508?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft.genre=article&rft.jtitle=&rft.atitle=&rft.au=Glasscoe%2C+Margaret+T%3BWang%2C+Jun%3BPierce%2C+Marlon+E%3BYoder%2C+Mark+R%3BParker%2C+Jay+W%3BBurl%2C+Michael+C%3BStough%2C+Timothy+M%3BGranat%2C+Robert+A%3BDonnellan%2C+Andrea%3BRundle%2C+John+B%3BMa%2C+Yu%3BBawden%2C+Gerald+W%3BYuen%2C+Karen&rft.aulast=Glasscoe&rft.aufirst=Margaret&rft.date=2015-08-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=E-DECIDER%3A+Using+Earth+Science+Data+and+Modeling+Tools+to+Develop+Decision+Support+for+Earthquake+Disaster+Response&rft.issn=&rft_id=info:doi/10.1007%2Fs00024-014-0824-9 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-08-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Prediction; Earthquakes; Long-term planning; Remote sensing; Disasters; Emergencies; Geophysics; Modelling; Deformation; Evaluation; Remote Sensing; Forecasting; Long-term Planning DO - http://dx.doi.org/10.1007/s00024-014-0824-9 ER - TY - JOUR T1 - An enhanced model of the contemporary and long-term (200 ka) sublimation of the massive subsurface ice in Beacon Valley, Antarctica AN - 1793209416; 2016-046211 AB - A massive ice body buried under several decimeters of dry regolith in Beacon Valley, Antarctica, is believed to be more than 1 Ma old and perhaps over 8.1 Ma; however, vapor diffusion models suggest that subsurface ice in this region is not stable under current climate conditions. To better understand the controls on sublimation rates and stability of this massive ice, we have modeled vapor diffusion using 12 years of climate and soil temperature data from 1999 to 2011, including field measurements of episodic snow cover and snowmelt events that have not been represented in previous models of ground ice sublimation. The model is then extended to reconstruct the sublimation history over the last 200 ka using paleotemperatures estimated from ice core data from nearby Taylor Dome and a relationship between atmospheric temperature and humidity derived from our meteorological records. The model quantifies the impact of episodic snow events; they account for a nearly 30% reduction in the massive ice loss. The sublimation rate of ground ice averages 0.11 mm a (super -1) between 1999 and 2011 in Beacon Valley. Parameterized with past environmental conditions and assuming the same regolith thickness, the modeled sublimation rate of ground ice in Beacon Valley averages 0.09 mm a (super -1) for the last 200 ka, comparable to the long-term average rate estimated independently from various studies based on cosmogenic isotopes. This study provides a realistic estimate of the long-term sublimation history and supports the inference that the buried ice in Beacon Valley is older than 1 Ma. Abstract Copyright (2015), American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Earth Surface AU - Liu, Lu AU - Sletten, Ronald S AU - Hagedorn, Birgit AU - Hallet, Bernard AU - McKay, Christopher P AU - Stone, John O Y1 - 2015/08// PY - 2015 DA - August 2015 SP - 1596 EP - 1610 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 120 IS - 8 SN - 2169-9003, 2169-9003 KW - hydrology KW - Quaternary KW - numerical models KW - subglacial processes KW - ice cover KW - glaciers KW - models KW - Cenozoic KW - sublimation KW - Antarctica KW - mass balance KW - ice KW - Victoria Land KW - ground ice KW - glacial geology KW - Beacon Valley KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1793209416?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Earth+Surface&rft.atitle=An+enhanced+model+of+the+contemporary+and+long-term+%28200+ka%29+sublimation+of+the+massive+subsurface+ice+in+Beacon+Valley%2C+Antarctica&rft.au=Liu%2C+Lu%3BSletten%2C+Ronald+S%3BHagedorn%2C+Birgit%3BHallet%2C+Bernard%3BMcKay%2C+Christopher+P%3BStone%2C+John+O&rft.aulast=Liu&rft.aufirst=Lu&rft.date=2015-08-01&rft.volume=120&rft.issue=8&rft.spage=1596&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Earth+Surface&rft.issn=21699003&rft_id=info:doi/10.1002%2F2014JF003415 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9011/issues?year=2013 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-06-02 N1 - SubjectsTermNotLitGenreText - Antarctica; Beacon Valley; Cenozoic; glacial geology; glaciers; ground ice; hydrology; ice; ice cover; mass balance; models; numerical models; Quaternary; subglacial processes; sublimation; Victoria Land DO - http://dx.doi.org/10.1002/2014JF003415 ER - TY - JOUR T1 - Progressive damage analysis as a design tool for composite bonded joints AN - 1770337317; PQ0002259784 AB - This paper discusses the application of progressive damage analysis (PDA) methods as a design tool. Two case studies are presented in which the effects of changing design features on the strength of bonded composite joints are evaluated. It is shown that the trends of parametric evaluations performed with full-featured PDA models can be unintuitive and the trends can be opposite to those obtained with traditional design criteria. The joint configurations that were tested exhibit multiple damage modes, requiring several different PDA tools to accurately predict the structural peak loads. For damage tolerant structures that exhibit complex sequences of multiple failure mechanisms, traditional failure prediction tools are insufficient. Parametric PDA models encompassing a bonded joint specimen's design space have the potential to reveal unintuitive and advantageous design changes. JF - Composites Part B: Engineering AU - Leone, Frank A AU - Davila, Carlos G AU - Girolamo, Donato AD - NASA Langley Research Center, Hampton, VA, 23681, USA Y1 - 2015/08// PY - 2015 DA - August 2015 SP - 474 EP - 483 PB - Elsevier B.V., P.O. Box 800 Kidlington Oxford OX5 1DX United Kingdom VL - 77 SN - 1359-8368, 1359-8368 KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Composites Industry Abstracts (ED); CSA / ASCE Civil Engineering Abstracts (CE) KW - C. Finite element analysis (FEA) KW - B. Adhesion KW - A. Honeycomb KW - D. Mechanical testing KW - Mathematical models KW - Bonding strength KW - Design engineering KW - Damage assessment KW - PDA KW - Peak load KW - Trends KW - Bonded joints UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1770337317?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Composites+Part+B%3A+Engineering&rft.atitle=&rft.au=Lester%2C+Luke+Fleet&rft.aulast=Lester&rft.aufirst=Luke&rft.date=1992-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=High-frequence+multiple+quantum+well+strained-layer+lasers&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-03-01 N1 - Last updated - 2016-03-04 DO - http://dx.doi.org/10.1016/j.compositesb.2015.03.046 ER - TY - JOUR T1 - Evaluation of the Tenax trap in the Sample Analysis at Mars instrument suite on the Curiosity Rover as a potential hydrocarbon source for chlorinated organics detected in Gale Crater AN - 1739081899; 2015-115153 AB - The Sample Analysis at Mars (SAM) instrument suite aboard Curiosity has detected chlorinated organic compounds in Martian sediment samples. The chlorine in these molecules is thought to derive from oxychlorine salts in Martian sediments, but the carbon source remains under investigation. To constrain possible carbon sources, we investigated how the composition and concentration of oxychlorine phases in solid samples affect organic molecules released from the Tenax traps on board SAM. We created Mars analogue soils by spiking olivine sand with calcium perchlorate, magnesium perchlorate, or ferric iron chloride and analyzed the volatiles generated during pyrolysis-gas chromatography-mass spectrometry using commercial instruments operated under SAM-like conditions, with and without a Tenax trap. Benzoic acid, phthalic anhydride, high molecular weight aromatics, and chlorobenzenes are produced from the trap in response to volatiles released during Cl salt pyrolysis. Changes in composition or concentration of oxychlorine phases between samples could thus potentially produce an increase in chlorobenzene, as observed between samples from Rocknest and Cumberland. However, in our experiments benzoic acid, phthalic anhydride, and chlorobenzenes increase in proportion with the amount of HCl sent to the trap, while in Cumberland samples the chlorobenzene increase showed no corresponding increase in HCl. Based on our experiments, the Tenax trap is a possible source of the traces of chlorobenzene observed at Rocknest, John Klein, and Confidence Hills. The order-of-magnitude higher chlorobenzene abundances observed at Cumberland cannot be attributed to the Tenax trap. Furthermore, we found no evidence of significant trap degradation after hundreds of experiments with Cl salt-containing analogue soils. Abstract Copyright (2015), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Miller, Kristen E AU - Kotrc, Benjamin AU - Summons, Roger E AU - Belmahdi, Imene AU - Buch, Arnaud AU - Eigenbrode, Jennifer L AU - Freissinet, Caroline AU - Glavin, Daniel P AU - Szopa, Cyril Y1 - 2015/08// PY - 2015 DA - August 2015 SP - 1446 EP - 1459 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 120 IS - 8 SN - 2169-9097, 2169-9097 KW - chlorinated hydrocarbons KW - chlorobenzene KW - Confidence Hills KW - techniques KW - Mars KW - Rocknest landing site KW - landing sites KW - Cumberland landing site KW - analysis KW - samples KW - terrestrial planets KW - planets KW - organic compounds KW - absorbent materials KW - Curiosity Rover KW - Mars Science Laboratory KW - halogenated hydrocarbons KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1739081899?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Planets&rft.atitle=Evaluation+of+the+Tenax+trap+in+the+Sample+Analysis+at+Mars+instrument+suite+on+the+Curiosity+Rover+as+a+potential+hydrocarbon+source+for+chlorinated+organics+detected+in+Gale+Crater&rft.au=Miller%2C+Kristen+E%3BKotrc%2C+Benjamin%3BSummons%2C+Roger+E%3BBelmahdi%2C+Imene%3BBuch%2C+Arnaud%3BEigenbrode%2C+Jennifer+L%3BFreissinet%2C+Caroline%3BGlavin%2C+Daniel+P%3BSzopa%2C+Cyril&rft.aulast=Miller&rft.aufirst=Kristen&rft.date=2015-08-01&rft.volume=120&rft.issue=8&rft.spage=1446&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2F2015JE004825 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9100 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 16 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2015-12-04 N1 - SubjectsTermNotLitGenreText - absorbent materials; analysis; chlorinated hydrocarbons; chlorobenzene; Confidence Hills; Cumberland landing site; Curiosity Rover; halogenated hydrocarbons; instruments; landing sites; Mars; Mars Science Laboratory; organic compounds; planets; Rocknest landing site; samples; techniques; terrestrial planets DO - http://dx.doi.org/10.1002/2015JE004825 ER - TY - JOUR T1 - Assessment of precipitation anomalies in California using TRMM and MERRA data AN - 1722182768; PQ0002019086 AB - Using modern satellite (Tropical Rainfall Measuring Mission, TRMM, 1998-2014) and reanalysis (Modern-Era Retrospective Analysis for Research and Applications, MERRA, 1979-2015) data, we reassess certain aspects of the precipitation climate in California from the past decades. California has a well-pronounced rain season that peaks in December-February. However, the 95% confidence interval around the climatological precipitation during these months imply that deviations on the order of 60% of the expected amounts are very likely during the most important period of the rain season. While these positive and negative anomalies alternate almost every year and tend to cancel each other, severe multiyear declines of precipitation in California appear on decadal scales. The 1986-1994 decline of precipitation was similar to the current one that started in 2011 and is apparent in the reanalysis data. In terms of accumulated deficits of precipitation, that episode was no less severe than the current one. While El Nino (the warm phase of the El Nino-Southern Oscillation, ENSO) is frequently cited as the natural forcing expected to bring a relief from drought, our assessment is that ENSO has been driving at best only 6% of precipitation variability in California in the past three decades. Using fractional risk analysis of precipitation during typical versus drying periods, we show that the likelihood of losing the most intensive precipitation events drastically increases during the multiyear drying events. Storms delivering up to 50% of the precipitation in California are driven by atmospheric rivers making landfall. However, these phenomena can be suppressed and even blocked by persistent ridges of atmospheric pressure in the northeast Pacific. The reanalysis and satellite data are proven to be reliable to the extent where they yield information on developing conditions and observed precipitation anomalies. Key Points * Satellite and reanalysis consistently reveal large precipitation variability * It is very likely that accumulated deficits will not be eliminated in 2015 * There is a high risk of losing the intensive precipitation during dry periods JF - Journal of Geophysical Research: Atmospheres AU - Savtchenko, Andrey K AU - Huffman, George AU - Vollmer, Bruce AD - Code 610.2, ADNET Systems, NASA, Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2015/08// PY - 2015 DA - August 2015 SP - 8206 EP - 8215 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 120 IS - 16 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Risk Abstracts; Meteorological & Geoastrophysical Abstracts KW - Remote Sensing KW - Risk assessment KW - Variability KW - Rainfall KW - Remote sensing KW - Drought KW - Storms KW - Data reanalysis KW - INE, USA, California KW - Precipitation anomalies KW - El Nino KW - Ocean-atmosphere system KW - Seasonal variability KW - Hydrologic Data KW - Droughts KW - El Nino phenomena KW - Rivers KW - Dry periods KW - Atmospheric precipitations KW - Marine KW - Satellite Technology KW - Risk analysis KW - Climates KW - Climate KW - Drying KW - Atmospheric Pressure KW - Precipitation KW - Satellites KW - Ridges KW - Southern Oscillation KW - Currents KW - Satellite data KW - El Nino-Southern Oscillation event KW - Precipitation variability KW - Tropical Rainfall Measuring Mission (TRMM) KW - Atmospheric pressure KW - Rain KW - Q2 09243:Structure, mechanics and thermodynamics KW - SW 0810:General KW - M2 551.588:Environmental Influences (551.588) KW - R2 23050:Environment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1722182768?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ariskabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=Assessment+of+precipitation+anomalies+in+California+using+TRMM+and+MERRA+data&rft.au=Savtchenko%2C+Andrey+K%3BHuffman%2C+George%3BVollmer%2C+Bruce&rft.aulast=Savtchenko&rft.aufirst=Andrey&rft.date=2015-08-01&rft.volume=120&rft.issue=16&rft.spage=8206&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2015JD023573 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-10-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Atmospheric precipitations; El Nino; Ocean-atmosphere system; Drying; Atmospheric pressure; Droughts; El Nino phenomena; Southern Oscillation; Dry periods; Rivers; Precipitation; Drought; Data reanalysis; Storms; Satellite data; Precipitation anomalies; El Nino-Southern Oscillation event; Precipitation variability; Tropical Rainfall Measuring Mission (TRMM); Seasonal variability; Risk assessment; Risk analysis; Rainfall; Climate; Remote sensing; Satellites; Ridges; Currents; Remote Sensing; Satellite Technology; Variability; Climates; Atmospheric Pressure; Rain; Hydrologic Data; INE, USA, California; Marine DO - http://dx.doi.org/10.1002/2015JD023573 ER - TY - JOUR T1 - Retrieving the height of smoke and dust aerosols by synergistic use of VIIRS, OMPS, and CALIOP observations AN - 1722175403; PQ0002019104 AB - This study extends the application of the previously developed Aerosol Single-scattering albedo and layer Height Estimation (ASHE) algorithm, which was originally applied to smoke aerosols only, to both smoke and dust aerosols by including nonspherical dust properties in the retrieval process. The main purpose of the algorithm is to derive aerosol height information over wide areas using aerosol products from multiple satellite sensors simultaneously: aerosol optical depth (AOD) and Aangstrom exponent from the Visible Infrared Imaging Radiometer Suite (VIIRS), UV aerosol index from the Ozone Mapping and Profiler Suite (OMPS), and total backscatter coefficient profile from the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP). The case studies suggest that the ASHE algorithm performs well for both smoke and dust aerosols, showing root-mean-square error of the retrieved aerosol height as compared to CALIOP observations from 0.58 to 1.31km and mean bias from -0.70 to 1.13km. In addition, the algorithm shows the ability to retrieve single-scattering albedo to within 0.03 of Aerosol Robotic Network inversion data for moderate to thick aerosol loadings (AOD of ~1.0). For typical single-layered aerosol cases, the estimated uncertainty in the retrieved height ranges from 1.20 to 1.80km over land and from 1.15 to 1.58km over ocean when favorable conditions are met. Larger errors are observed for multilayered aerosol events, due to the limited sensitivities of the passive sensors to such cases. Key Points * Aerosol height is derived over wide areas from passive satellite sensors * The present algorithm can be applied to both smoke and dust aerosols * The retrieved height and SSA compare well with the CALIOP and AERONET data JF - Journal of Geophysical Research: Atmospheres AU - Lee, Jaehwa AU - Hsu, NChristina AU - Bettenhausen, Corey AU - Sayer, Andrew M AU - Seftor, Colin J AU - Jeong, Myeong-Jae AD - NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2015/08// PY - 2015 DA - August 2015 SP - 8372 EP - 8388 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 120 IS - 16 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Remote Sensing KW - Sensors KW - Algorithms KW - Dust KW - Radiometers KW - Aerosol Robotic Network (AERONET) KW - Satellite Technology KW - Atmospheric particulates KW - Aerosols KW - Mathematical models KW - Albedo KW - Polarization KW - Dusts KW - Ashes KW - Inversions KW - Clouds KW - Smoke KW - Oceans KW - Lidar applications KW - Optical depth of aerosols KW - Eolian dust KW - M2 551.510.42:Air Pollution (551.510.42) KW - SW 0810:General KW - Q2 09105:Research programmes and expeditions UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1722175403?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=Retrieving+the+height+of+smoke+and+dust+aerosols+by+synergistic+use+of+VIIRS%2C+OMPS%2C+and+CALIOP+observations&rft.au=Lee%2C+Jaehwa%3BHsu%2C+NChristina%3BBettenhausen%2C+Corey%3BSayer%2C+Andrew+M%3BSeftor%2C+Colin+J%3BJeong%2C+Myeong-Jae&rft.aulast=Lee&rft.aufirst=Jaehwa&rft.date=2015-08-01&rft.volume=120&rft.issue=16&rft.spage=8372&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2015JD023567 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-10-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Smoke; Atmospheric particulates; Aerosols; Mathematical models; Sensors; Albedo; Ashes; Eolian dust; Dust; Aerosol Robotic Network (AERONET); Clouds; Radiometers; Lidar applications; Algorithms; Optical depth of aerosols; Polarization; Inversions; Remote Sensing; Satellite Technology; Oceans; Dusts DO - http://dx.doi.org/10.1002/2015JD023567 ER - TY - JOUR T1 - Pristine stratospheric collection of interplanetary dust on an oil-free polyurethane foam substrate AN - 1718053309; 2015-093994 AB - We performed chemical, mineralogical, and isotopic studies of the first interplanetary dust particles (IDPs) collected in the stratosphere without the use of silicone oil. The collection substrate, polyurethane foam, effectively traps impacting particles, but the lack of an embedding medium results in significant particle fragmentation. Two dust particles found on the collector exhibit the typical compositional and mineralogical properties of chondritic porous interplanetary dust particles (CP-IDPs). Hydrogen and nitrogen isotopic imaging revealed isotopic anomalies of typical magnitude and spatial variability observed in previous CP-IDP studies. Oxygen isotopic imaging shows that individual mineral grains and glass with embedded metal and sulfide (GEMS) grains are dominated by solar system materials. No systematic differences are observed in element abundance patterns of GEMS grains from the dry collection versus silicone oil-collected IDPs. This initial study establishes the validity of a new IDP collection substrate that avoids the use of silicone oil as a collection medium, removing the need for this problematic contaminant and the organic solvents necessary to remove it. Additional silicone oil-free collections of this type are needed to determine more accurate bulk element abundances of IDPs and to examine the indigenous soluble organic components of IDPs. Abstract Copyright The Meteoritical Society, 2015. JF - Meteoritics & Planetary Science AU - Messenger, Scott AU - Nakamura-Messenger, Keiko AU - Keller, Lindsay P AU - Clemett, Simon J Y1 - 2015/08// PY - 2015 DA - August 2015 SP - 1468 EP - 1485 PB - Meteoritical Society, Fayetteville, AR VL - 50 IS - 8 SN - 1086-9379, 1086-9379 KW - oxygen KW - ion probe data KW - isotopes KW - mass spectra KW - interplanetary dust KW - stable isotopes KW - solvents KW - mineral composition KW - stratosphere KW - sampling KW - spectra KW - chemical composition KW - O-17/O-16 KW - isotope ratios KW - electron microscopy data KW - O-18/O-16 KW - X-ray spectra KW - TEM data KW - EDS spectra KW - sample preparation KW - cosmic dust KW - polyurethane foam KW - glass with embedded metal and sulfide grains KW - NanoSIMS KW - SEM data KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1718053309?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=Pristine+stratospheric+collection+of+interplanetary+dust+on+an+oil-free+polyurethane+foam+substrate&rft.au=Messenger%2C+Scott%3BNakamura-Messenger%2C+Keiko%3BKeller%2C+Lindsay+P%3BClemett%2C+Simon+J&rft.aulast=Messenger&rft.aufirst=Scott&rft.date=2015-08-01&rft.volume=50&rft.issue=8&rft.spage=1468&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12473 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 46 N1 - PubXState - AR N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2015-10-01 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - chemical composition; cosmic dust; EDS spectra; electron microscopy data; glass with embedded metal and sulfide grains; interplanetary dust; ion probe data; isotope ratios; isotopes; mass spectra; mineral composition; NanoSIMS; O-17/O-16; O-18/O-16; oxygen; polyurethane foam; sample preparation; sampling; SEM data; solvents; spectra; stable isotopes; stratosphere; TEM data; X-ray spectra DO - http://dx.doi.org/10.1111/maps.12473 ER - TY - JOUR T1 - Vegetation cover change in the Upper Kings River basin of the Sierra Nevada detected using Landsat satellite image analysis AN - 1709189978; PQ0001899227 AB - The Sierra Nevada of California is a region where large forest fires have been suppressed for over a century and future climate warming has the potential to alter vegetation cover and surface water runoff. A detailed geographic record of recent changes in vegetation cover across the Sierra Nevada remains a gap that can be filled with satellite remote sensing data. Results from Landsat image analysis over the past 25 years in the Upper Kings River basin showed that consistent increases in the normalized difference vegetation index (NDVI) have not extended above 2000 m elevation. Moreover, mean increases in NDVI since 1986 at elevations below 2000 m (which cover about half of the total basin area) have not exceeded 9 %, even in the most extreme precipitation yearly comparisons. NDVI has decreased significantly at elevations above 2000 m throughout the basin in relatively wet year comparisons since the mid-1980s. These findings conflict with any assumptions that evapotranspiration fluxes impacting river flows downstream have been altered mainly by vegetation change over most of the Upper Kings River basin in recent decades. JF - Climatic Change AU - Potter, Christopher AD - NASA Ames Research Center, Mail Stop 232-21, Moffett Field, CA, USA, chris.potter@nasa.gov Y1 - 2015/08// PY - 2015 DA - August 2015 SP - 635 EP - 647 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 131 IS - 4 SN - 0165-0009, 0165-0009 KW - ASFA 3: Aquatic Pollution & Environmental Quality; Environment Abstracts; Sustainability Science Abstracts; Meteorological & Geoastrophysical Abstracts KW - Surface water KW - Remote sensing KW - Basins KW - LANDSAT KW - Freshwater KW - Climate and vegetation KW - Vegetation cover KW - INE, USA, California KW - Downstream KW - Vegetation index KW - Rivers KW - Atmospheric precipitations KW - River flow KW - Forest fires KW - Vegetation KW - River basins KW - Evapotranspiration KW - Precipitation KW - Satellites KW - USA, California, Sierra Nevada Mts. KW - Satellite sensing KW - Landsat KW - Vegetation changes KW - Global warming KW - Conflicts KW - Runoff KW - Future climates KW - M3 1010:Issues in Sustainable Development KW - Q5 08502:Methods and instruments KW - M2 556.16:Runoff (556.16) KW - ENA 20:Weather Modification & Geophysical Change UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1709189978?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Climatic+Change&rft.atitle=Vegetation+cover+change+in+the+Upper+Kings+River+basin+of+the+Sierra+Nevada+detected+using+Landsat+satellite+image+analysis&rft.au=Potter%2C+Christopher&rft.aulast=Potter&rft.aufirst=Christopher&rft.date=2015-08-01&rft.volume=131&rft.issue=4&rft.spage=635&rft.isbn=&rft.btitle=&rft.title=Climatic+Change&rft.issn=01650009&rft_id=info:doi/10.1007%2Fs10584-015-1397-z LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-09-01 N1 - Number of references - 33 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Atmospheric precipitations; Rivers; Satellite sensing; Vegetation cover; Remote sensing; Evapotranspiration; River basins; Runoff; Climate and vegetation; River flow; Forest fires; LANDSAT; Precipitation; Vegetation index; Future climates; Surface water; Basins; Vegetation; Satellites; Landsat; Vegetation changes; Global warming; Downstream; Conflicts; INE, USA, California; USA, California, Sierra Nevada Mts.; Freshwater DO - http://dx.doi.org/10.1007/s10584-015-1397-z ER - TY - JOUR T1 - Constraints on Cumulus Parameterization from Simulations of Observed MJO Events AN - 1709164603; PQ0001901101 AB - Two recent activities offer an opportunity to test general circulation model (GCM) convection and its interaction with large-scale dynamics for observed Madden-Julian oscillation (MJO) events. This study evaluates the sensitivity of the Goddard Institute for Space Studies (GISS) GCM to entrainment, rain evaporation, downdrafts, and cold pools. Single Column Model versions that restrict weakly entraining convection produce the most realistic dependence of convection depth on column water vapor (CWV) during the Atmospheric Radiation Measurement MJO Investigation Experiment at Gan Island. Differences among models are primarily at intermediate CWV where the transition from shallow to deeper convection occurs. GCM 20-day hindcasts during the Year of Tropical Convection that best capture the shallow-deep transition also produce strong MJOs, with significant predictability compared to Tropical Rainfall Measuring Mission data. The dry anomaly east of the disturbance on hindcast day 1 is a good predictor of MJO onset and evolution. Initial CWV there is near the shallow-deep transition point, implicating premature onset of deep convection as a predictor of a poor MJO simulation. Convection weakly moistens the dry region in good MJO simulations in the first week; weakening of large-scale subsidence over this time may also affect MJO onset. Longwave radiation anomalies are weakest in the worst model version, consistent with previous analyses of cloud/moisture greenhouse enhancement as the primary MJO energy source. The authors' results suggest that both cloud-/moisture-radiative interactions and convection-moisture sensitivity are required to produce a successful MJO simulation. JF - Journal of Climate AU - Del Genio, Anthony D AU - Wu, Jingbo AU - Wolf, Audrey B AU - Chen, Yonghua AU - Yao, Mao-Sung AU - Kim, Daehyun AD - NASA Goddard Institute for Space Studies, New York, New York Y1 - 2015/08// PY - 2015 DA - August 2015 SP - 6419 EP - 6442 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 28 IS - 16 SN - 0894-8755, 0894-8755 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Indian Ocean KW - Cold pools KW - Convection KW - Convective clouds KW - Madden-Julian oscillation KW - Convective parameterization KW - Moisture KW - Water Vapor KW - Entrainment KW - Evaporation KW - Rainfall KW - Convection development KW - Downdrafts KW - Predictability KW - Radiation KW - Subsidence KW - Water vapor in the atmosphere KW - Atmospheric radiation measurements KW - Climates KW - Simulation KW - Atmospheric circulation KW - Model Studies KW - Clouds KW - Numerical simulations KW - General circulation models KW - Energy resources KW - Long-wave radiation KW - Tropical Rainfall Measuring Mission (TRMM) KW - Downward long wave radiation KW - Rain KW - SW 5010:Network design KW - Q2 09402:Freshwater from the sea KW - M2 556.13:Evaporation/Evapotranspiration (556.13) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1709164603?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Climate&rft.atitle=Constraints+on+Cumulus+Parameterization+from+Simulations+of+Observed+MJO+Events&rft.au=Del+Genio%2C+Anthony+D%3BWu%2C+Jingbo%3BWolf%2C+Audrey+B%3BChen%2C+Yonghua%3BYao%2C+Mao-Sung%3BKim%2C+Daehyun&rft.aulast=Del+Genio&rft.aufirst=Anthony&rft.date=2015-08-01&rft.volume=28&rft.issue=16&rft.spage=6419&rft.isbn=&rft.btitle=&rft.title=Journal+of+Climate&rft.issn=08948755&rft_id=info:doi/10.1175%2FJCLI-D-14-00832.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-09-01 N1 - Number of references - 108 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Clouds; Convection; Radiation; Energy resources; Subsidence; Simulation; Downward long wave radiation; Atmospheric circulation; Entrainment; Evaporation; Water vapor in the atmosphere; Atmospheric radiation measurements; Convection development; Downdrafts; Cold pools; Numerical simulations; Predictability; General circulation models; Tropical Rainfall Measuring Mission (TRMM); Long-wave radiation; Moisture; Water Vapor; Rainfall; Climates; Rain; Model Studies DO - http://dx.doi.org/10.1175/JCLI-D-14-00832.1 ER - TY - JOUR T1 - TRMM LIS Climatology of Thunderstorm Occurrence and Conditional Lightning Flash Rates* AN - 1709164551; PQ0001901108 AB - The Lightning Imaging Sensor (LIS) on the Tropical Rainfall Measuring Mission (TRMM) satellite has previously been used to build climatologies of mean lightning flash rate across the global tropics and subtropics. This new work explores climatologies of thunderstorm occurrence as seen by LIS and the conditional mean flash rates when thunderstorms do occur. The region where thunderstorms are seen most often by LIS extends slightly farther east in central Africa than the corresponding region with the highest total mean annual flash rates. Presumably this reflects a difference between more frequent thunderstorm initiation in the east and upscale growth as storms move westward. There are some differences between locations with the greatest total lightning flash counts and those where thunderstorms occur most often. The greatest conditional mean flash rates-considering only those TRMM orbits that do have lightning in a given grid box-are found in subtropical regions. The highest values are in Argentina, with the central United States, Pakistan, eastern China, and the east coast of Australia also having particularly high values. JF - Journal of Climate AU - Cecil, Daniel J AU - Buechler, Dennis E AU - Blakeslee, Richard J AD - NASA Marshall Space Flight Center, Huntsville, Alabama Y1 - 2015/08// PY - 2015 DA - August 2015 SP - 6536 EP - 6547 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 28 IS - 16 SN - 0894-8755, 0894-8755 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Lightning KW - Thunderstorms KW - Atmospheric electricity KW - Convective storms KW - PSE, Australia KW - Thunderstorm statistics KW - Lightning flashes KW - Sensors KW - Rainfall KW - Storms KW - Growth KW - Thunderstorm location KW - Climatology KW - Coasts KW - Thunderstorm rainfall KW - Climates KW - Climate KW - Satellite observation of thunderstorms KW - Imaging techniques KW - Thunderstorm activity KW - USA KW - ISW, Pakistan KW - Africa KW - Tropical Rainfall Measuring Mission (TRMM) KW - China, People's Rep. KW - PSW, Argentina KW - Q2 09393:Remote geosensing KW - SW 0810:General KW - M2 551.58:Climatology (551.58) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1709164551?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Climate&rft.atitle=TRMM+LIS+Climatology+of+Thunderstorm+Occurrence+and+Conditional+Lightning+Flash+Rates*&rft.au=Cecil%2C+Daniel+J%3BBuechler%2C+Dennis+E%3BBlakeslee%2C+Richard+J&rft.aulast=Cecil&rft.aufirst=Daniel&rft.date=2015-08-01&rft.volume=28&rft.issue=16&rft.spage=6536&rft.isbn=&rft.btitle=&rft.title=Journal+of+Climate&rft.issn=08948755&rft_id=info:doi/10.1175%2FJCLI-D-15-0124.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-09-01 N1 - Number of references - 16 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Growth; Sensors; Lightning; Climate; Thunderstorms; Climatology; Imaging techniques; Thunderstorm statistics; Thunderstorm activity; Thunderstorm location; Lightning flashes; Tropical Rainfall Measuring Mission (TRMM); Satellite observation of thunderstorms; Storms; Thunderstorm rainfall; Rainfall; Climates; Coasts; PSE, Australia; USA; ISW, Pakistan; Africa; China, People's Rep.; PSW, Argentina DO - http://dx.doi.org/10.1175/JCLI-D-15-0124.1 ER - TY - JOUR T1 - Interactive Vegetation Phenology, Soil Moisture, and Monthly Temperature Forecasts AN - 1705071050; PQ0001825784 AB - The time scales that characterize the variations of vegetation phenology are generally much longer than those that characterize atmospheric processes. The explicit modeling of phenological processes in an atmospheric forecast system thus has the potential to provide skill to subseasonal or seasonal forecasts. We examine this possibility here using a forecast system fitted with a dynamic vegetation phenology model. We perform three experiments, each consisting of 128 independent warm-season monthly forecasts: 1) an experiment in which both soil moisture states and carbon states (e.g., those determining leaf area index) are initialized realistically, 2) an experiment in which the carbon states are prescribed to climatology throughout the forecasts, and 3) an experiment in which both the carbon and soil moisture states are prescribed to climatology throughout the forecasts. Evaluating the monthly forecasts of air temperature in each ensemble against observations-as well as quantifying the inherent predictability of temperature within each ensemble-shows that dynamic phenology can indeed contribute positively to subseasonal forecasts, though only to a small extent, with an impact dwarfed by that of soil moisture. JF - Journal of Hydrometeorology AU - Koster, R D AU - Walker, G K AD - Global Modeling and Assimilation Office, NASA GSFC, Greenbelt, Maryland Y1 - 2015/08// PY - 2015 DA - August 2015 SP - 1456 EP - 1465 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 16 IS - 4 SN - 1525-755X, 1525-755X KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Vegetation-atmosphere interactions KW - Soil moisture KW - Forecasting techniques KW - Seasonal forecasting KW - Atmospheric processes KW - Soil Water KW - Air temperature KW - Climate and vegetation KW - Carbon KW - Predictability KW - Phenology KW - Hydrometeorological forecasting KW - Climatology KW - Temperature KW - Leaves KW - Vegetation KW - Monthly forecasts KW - Seasonal forecasts KW - Model Studies KW - Hydrometeorology KW - Hydrometeorological research KW - Monthly temperature forecasts KW - Moisture Content KW - AQ 00001:Water Resources and Supplies KW - SW 0810:General KW - Q2 09171:Dynamics of lakes and rivers KW - M2 556.14:Infiltration/Soil Moisture (556.14) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1705071050?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydrometeorology&rft.atitle=Interactive+Vegetation+Phenology%2C+Soil+Moisture%2C+and+Monthly+Temperature+Forecasts&rft.au=Koster%2C+R+D%3BWalker%2C+G+K&rft.aulast=Koster&rft.aufirst=R&rft.date=2015-08-01&rft.volume=16&rft.issue=4&rft.spage=1456&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrometeorology&rft.issn=1525755X&rft_id=info:doi/10.1175%2FJHM-D-14-0205.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Number of references - 36 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Phenology; Leaves; Climatology; Air temperature; Climate and vegetation; Hydrometeorological research; Monthly temperature forecasts; Predictability; Atmospheric processes; Seasonal forecasts; Monthly forecasts; Hydrometeorological forecasting; Soil moisture; Hydrometeorology; Carbon; Temperature; Vegetation; Moisture Content; Soil Water; Model Studies DO - http://dx.doi.org/10.1175/JHM-D-14-0205.1 ER - TY - JOUR T1 - Early plasmapheresis in patients with severe hypertriglyceridemia induced acute pancreatitis AN - 1704737765 AB - Hypertriglyceridemia can cause severe diseases such as acute pancreatitis (AP) and coronary artery disease. The routine management of hypertriglyceridemia is dietary restriction of fat and lipid-lowering medications to manage the secondary or precipitating causes of hypertriglyceridemia. However, in cases of AP with severe hypertriglyceridemia (SHTG) (triglycerides [TG] >1000 mg/dl) rapid reduction of TG levels to well below 1000 mg/dl can improve outcome and prevent further episodes of pancreatitis. Plasmapheresis is a therapeutic option in such medical emergencies. We discussed 2 cases of severe AP with SHTG where we used early plsmapheresis along with other supportive management. JF - Indian Journal of Critical Care Medicine AU - Nasa, Prashant AU - Alexander, George AU - Kulkarni, Amitabh AU - Juneja, Deven AU - Sehra, Sudhish AU - Agarwal, Rajesh AU - Koul, Kandy Y1 - 2015/08// PY - 2015 DA - Aug 2015 SP - 487 EP - 489 CY - Mumbai PB - Medknow Publications & Media Pvt. Ltd. VL - 19 IS - 8 SN - 09725229 KW - Medical Sciences UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1704737765?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ahealthcompleteshell&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Indian+Journal+of+Critical+Care+Medicine&rft.atitle=Early+plasmapheresis+in+patients+with+severe+hypertriglyceridemia+induced+acute+pancreatitis&rft.au=Nasa%2C+Prashant%3BAlexander%2C+George%3BKulkarni%2C+Amitabh%3BJuneja%2C+Deven%3BSehra%2C+Sudhish%3BAgarwal%2C+Rajesh%3BKoul%2C+Kandy&rft.aulast=Nasa&rft.aufirst=Prashant&rft.date=2015-08-01&rft.volume=19&rft.issue=8&rft.spage=487&rft.isbn=&rft.btitle=&rft.title=Indian+Journal+of+Critical+Care+Medicine&rft.issn=09725229&rft_id=info:doi/10.4103%2F0972-5229.162472 LA - English DB - ProQuest Central N1 - Copyright - Copyright Medknow Publications & Media Pvt Ltd Aug 2015 N1 - Last updated - 2016-06-11 DO - http://dx.doi.org/10.4103/0972-5229.162472 ER - TY - NEWS T1 - Engine fed steady diet of volcanic ash AN - 1700065829 JF - UPI Space Daily AU - Jay Levine for Armstrong Flight Research Center Y1 - 2015/07/30/ PY - 2015 DA - 2015 Jul 30 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700065829?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=Engine+fed+steady+diet+of+volcanic+ash&rft.au=Jay+Levine+for+Armstrong+Flight+Research+Center&rft.aulast=Jay+Levine+for+Armstrong+Flight+Research+Center&rft.aufirst=&rft.date=2015-07-30&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-07-30 ER - TY - NEWS T1 - NASA could help keep large unmanned aircraft clear of commercial planes AN - 1700065613 JF - UPI Space Daily AU - Joe Atkinson for Langley Research Center Y1 - 2015/07/30/ PY - 2015 DA - 2015 Jul 30 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700065613?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=NASA+could+help+keep+large+unmanned+aircraft+clear+of+commercial+planes&rft.au=Joe+Atkinson+for+Langley+Research+Center&rft.aulast=Joe+Atkinson+for+Langley+Research+Center&rft.aufirst=&rft.date=2015-07-30&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-07-30 ER - TY - JOUR T1 - Three-dimensional distribution of a major desert dust outbreak over east Asia in March 2008 derived from IASI satellite observations AN - 1718049994; 2015-096564 AB - We describe the daily evolution of the three-dimensional (3D) structure of a major dust outbreak initiated by an extratropical cyclone over East Asia in early March 2008, using new aerosol retrievals derived from satellite observations of IASI (Infrared Atmospheric Sounding Interferometer). A novel auto-adaptive Tikhonov-Phillips-type approach called AEROIASI is used to retrieve vertical profiles of dust extinction coefficient at 10 mu m for most cloud-free IASI pixels, both over land and ocean. The dust vertical distribution derived from AEROIASI is shown to agree remarkably well with along-track transects of CALIOP spaceborne lidar vertical profiles (mean biases less than 110 m, correlation of 0.95, and precision of 260 m for mean altitudes of the dust layers). AEROIASI allows the daily characterization of the 3D transport pathways across East Asia of two dust plumes originating from the Gobi and North Chinese deserts. From AEROIASI retrievals, we provide evidence that (i) both dust plumes are transported over the Beijing region and the Yellow Sea as elevated layers above a shallow boundary layer, (ii) as they progress eastward, the dust layers are lifted up by the ascending motions near the core of the extratropical cyclone, and (iii) when being transported over the warm waters of the Japan Sea, turbulent mixing in the deep marine boundary layer leads to high dust concentrations down to the surface. AEROIASI observations and model simulations also show that the progression of the dust plumes across East Asia is tightly related to the advancing cold front of the extratropical cyclone. Abstract Copyright (2015), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Atmospheres AU - Cuesta, Juan AU - Eremenko, Maxim AU - Flamant, Cyrille AU - Dufour, Gaelle AU - Laurent, Benoit AU - Bergametti, Gilles AU - Hoepfner, Michael AU - Orphal, Johannes AU - Zhou, Daniel Y1 - 2015/07/27/ PY - 2015 DA - 2015 Jul 27 SP - 7099 EP - 7127 PB - Blackwell Wiley for American Geophysical Union, Washington, DC VL - 120 IS - 14 SN - 2169-897X, 2169-897X KW - plumes KW - Far East KW - three-dimensional models KW - sediment transport KW - clastic sediments KW - Gobi Desert KW - satellite methods KW - environmental effects KW - deserts KW - eastern Asia KW - spatial distribution KW - transport KW - atmospheric transport KW - dust KW - sediments KW - climate effects KW - wind transport KW - Asia KW - China KW - remote sensing KW - 20:Applied geophysics KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1718049994?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=Three-dimensional+distribution+of+a+major+desert+dust+outbreak+over+east+Asia+in+March+2008+derived+from+IASI+satellite+observations&rft.au=Cuesta%2C+Juan%3BEremenko%2C+Maxim%3BFlamant%2C+Cyrille%3BDufour%2C+Gaelle%3BLaurent%2C+Benoit%3BBergametti%2C+Gilles%3BHoepfner%2C+Michael%3BOrphal%2C+Johannes%3BZhou%2C+Daniel&rft.aulast=Cuesta&rft.aufirst=Juan&rft.date=2015-07-27&rft.volume=120&rft.issue=14&rft.spage=7099&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2014JD022406 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-8996 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 25 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2015-10-01 N1 - SubjectsTermNotLitGenreText - Asia; atmospheric transport; China; clastic sediments; climate effects; deserts; dust; eastern Asia; environmental effects; Far East; Gobi Desert; plumes; remote sensing; satellite methods; sediment transport; sediments; spatial distribution; three-dimensional models; transport; wind transport DO - http://dx.doi.org/10.1002/2014JD022406 ER - TY - NEWS T1 - Predicting Floods AN - 1698870339 JF - UPI Space Daily AU - Staff Writers for NASA Science News Y1 - 2015/07/26/ PY - 2015 DA - 2015 Jul 26 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1698870339?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=Predicting+Floods&rft.au=Staff+Writers+for+NASA+Science+News&rft.aulast=Staff+Writers+for+NASA+Science+News&rft.aufirst=&rft.date=2015-07-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-07-27 ER - TY - JOUR T1 - The volatile composition of Comet C/2003 K4 (Linear) at near-IR wavelengths-comparisons with results from the Nancay Radio Telescope and from the Odin, Spitzer, and Soho Space Observatories AN - 1832605994; 757444-1 AB - We observed comet C/2003 K4 (LINEAR) using NIRSPEC at the Keck Observatory on UT 2004 November 28, when the comet was at 1.28 AU from the Sun (post-perihelion) and 1.38 AU from Earth. We detected six gaseous species (H (sub 2) O, OH*, C (sub 2) H (sub 6) , CH (sub 3) OH, CH (sub 4) , and HCN) and obtained upper limits for three others (H (sub 2) CO, C (sub 2) H (sub 2) , and NH (sub 3) ). Our results indicate a water production rate of (1.72 + or - 0.18) X 10 (super 29) molecules s (super �1) , in reasonable agreement with production rates from SOHO (on the same day), Odin (one day earlier), and Nancay (about two weeks earlier). We also report abundances (relative to water) for seven trace species: CH (sub 3) OH (�1.8%), CH (sub 4) (�0.9%), and C (sub 2) H (sub 6) (�0.4%) that were consistent with mean values among Oort cloud (OC) comets, while NH (sub 3) (<0.55%), HCN (�0.07%), H (sub 2) CO (<0.07%), and C (sub 2) H (sub 2) (<0.04%) were �lower� than the mean values in other OC comets. We extracted inner-coma rotational temperatures for four species (H (sub 2) O, C (sub 2) H (sub 6) , CH (sub 3) OH, and CH (sub 4) ), all of which are consistent with 70 K (within 1�). The extracted ortho-para ratio for water was 3.0 + or - 0.15, corresponding to spin temperatures larger than 39 K (at the 1� level) and agreeing with those obtained with the Spitzer Space Telescope at the 2� level. Copyright (Copyright) 2015. The American Astronomical Society. All rights reserved. JF - The Astrophysical Journal AU - Paganini, L AU - Mumma, M J AU - Villanueva, G L AU - DiSanti, M A AU - Bonev, B P Y1 - 2015/07/20/ PY - 2015 DA - 2015 Jul 20 EP - Paper no. 1 PB - IOP Publishing for American Astronomical Society, Bristol VL - 808 IS - 1 SN - 0004-637X, 0004-637X KW - near-infrared spectra KW - ammonium KW - Solar and Heliospheric Observatory KW - Odin space telescope KW - aliphatic hydrocarbons KW - ethane KW - C/2003 K4 Comet KW - temperature KW - rotation KW - composition KW - alcohols KW - hydrogen cyanide KW - spectra KW - degassing KW - water KW - methane KW - telescope methods KW - Spitzer Space Telescope KW - formaldehyde KW - alkanes KW - methanol KW - gases KW - volatiles KW - organic compounds KW - comets KW - Nancay radio telescope KW - hydrocarbons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832605994?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Astrophysical+Journal&rft.atitle=The+volatile+composition+of+Comet+C%2F2003+K4+%28Linear%29+at+near-IR+wavelengths-comparisons+with+results+from+the+Nancay+Radio+Telescope+and+from+the+Odin%2C+Spitzer%2C+and+Soho+Space+Observatories&rft.au=Paganini%2C+L%3BMumma%2C+M+J%3BVillanueva%2C+G+L%3BDiSanti%2C+M+A%3BBonev%2C+B+P&rft.aulast=Paganini&rft.aufirst=L&rft.date=2015-07-20&rft.volume=808&rft.issue=1&rft.spage=&rft.isbn=&rft.btitle=&rft.title=The+Astrophysical+Journal&rft.issn=0004637X&rft_id=info:doi/10.1088%2F0004-637X%2F808%2F1%2F1 L2 - http://iopscience.iop.org/0004-637X LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data supplied by IOP Publishing Ltd., London, United Kingdom N1 - Number of references - 53 N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - alcohols; aliphatic hydrocarbons; alkanes; ammonium; C/2003 K4 Comet; comets; composition; degassing; ethane; formaldehyde; gases; hydrocarbons; hydrogen cyanide; methane; methanol; Nancay radio telescope; near-infrared spectra; Odin space telescope; organic compounds; rotation; Solar and Heliospheric Observatory; spectra; Spitzer Space Telescope; telescope methods; temperature; volatiles; water DO - http://dx.doi.org/10.1088/0004-637X/808/1/1 ER - TY - JOUR T1 - Effects of postdepositional processing on nitrogen isotopes of nitrate in the Greenland Ice Sheet Project 2 ice core AN - 1803774243; 2016-059834 AB - Records of ice core nitrate and its isotopes hold the potential to assess past atmospheric conditions regarding NO (sub x) and oxidant levels. However, relating such records to past atmospheric conditions requires a site-specific understanding of the postdepositional processing of snow nitrate. We report delta (super 15) N(NO (sub 3) (super -) ) records from the Greenland Ice Sheet Project 2 (GISP2) ice core over major climate transitions. Model calculations and comparison with records of parameters influencing UV-driven postdepositional processing of snow nitrate suggest that the observed variability in GISP2 delta (super 15) N(NO (sub 3) (super -) ) over major climate transitions is primarily driven by changes in the degree of postdepositional loss of snow nitrate. Estimates of the fractional loss of snow nitrate is (16-23)% in the Holocene and (45-53)% in the glacial period, suggesting a (41 + or - 32)% lower nitrate depositional flux to Greenland during the glacial period relative to the Holocene. Abstract Copyright (2015), . American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Geng, Lei AU - Zatko, Maria C AU - Alexander, Becky AU - Fudge, T J AU - Schauer, Andrew J AU - Murray, Lee T AU - Mickley, Loretta J Y1 - 2015/07/16/ PY - 2015 DA - 2015 Jul 16 SP - 5346 EP - 5354 PB - American Geophysical Union, Washington, DC VL - 42 IS - 13 SN - 0094-8276, 0094-8276 KW - N-15/N-14 KW - isotopes KW - isotope ratios KW - Arctic region KW - Greenland ice sheet KW - GISP2 KW - stable isotopes KW - ice sheets KW - deglaciation KW - climate change KW - nitrogen KW - Greenland KW - snow KW - climate effects KW - glacial geology KW - chemical composition KW - meltwater KW - 24:Quaternary geology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803774243?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=Effects+of+postdepositional+processing+on+nitrogen+isotopes+of+nitrate+in+the+Greenland+Ice+Sheet+Project+2+ice+core&rft.au=Geng%2C+Lei%3BZatko%2C+Maria+C%3BAlexander%2C+Becky%3BFudge%2C+T+J%3BSchauer%2C+Andrew+J%3BMurray%2C+Lee+T%3BMickley%2C+Loretta+J&rft.aulast=Geng&rft.aufirst=Lei&rft.date=2015-07-16&rft.volume=42&rft.issue=13&rft.spage=5346&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL064218 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 40 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2016-07-14 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - Arctic region; chemical composition; climate change; climate effects; deglaciation; GISP2; glacial geology; Greenland; Greenland ice sheet; ice sheets; isotope ratios; isotopes; meltwater; N-15/N-14; nitrogen; snow; stable isotopes DO - http://dx.doi.org/10.1002/2015GL064218 ER - TY - JOUR T1 - Evidence for the sequestration of hydrogen-bearing volatiles towards the Moon's southern pole-facing slopes AN - 1718050865; 2015-093459 AB - The Lunar Exploration Neutron Detector (LEND) onboard the Lunar Reconnaissance Orbiter (LRO) detects a widespread suppression of the epithermal neutron leakage flux that is coincident with the pole-facing slopes (PFS) of the Moon's southern hemisphere. Suppression of the epithermal neutron flux is consistent with an interpretation of enhanced concentrations of hydrogen-bearing volatiles within the upper meter of the regolith. Localized flux suppression in PFS suggests that the reduced solar irradiation and lowered temperature on PFS constrains volatility to a greater extent than in surrounding regions. Epithermal neutron flux mapped with LEND's Collimated Sensor for Epithermal Neutrons (CSETN) was analyzed as a function of slope geomorphology derived from the Lunar Orbiting Laser Altimeter (LOLA) and the results compared to co-registered maps of diurnally averaged temperature from the Diviner Lunar Radiometer Experiment and an averaged illumination map derived from LOLA. The suppression in the average south polar epithermal neutron flux on equator-facing slopes (EFS) and PFS (85-90 degrees S) is 3.3 + or - 0.04% and 4.3 + or - 0.05% respectively (one-sigma-uncertainties), relative to the average count-rate in the latitude band 45-90 degrees S. The discrepancy of 1.0 + or - 0.06% between EFS and PFS neutron flux corresponds to an average of approximately 23 parts-per-million-by-weight (ppmw) more hydrogen on PFS than on EFS. Results show that the detection of hydrogen concentrations on PFS is dependent on their spatial scale. Epithermal flux suppression on large scale PFS was found to be enhanced to 5.2 + or - 0.13%, a discrepancy of approximately 45 ppmw hydrogen relative to equivalent EFS. Enhanced poleward hydration of PFS begins between 50 degrees S and 60 degrees S latitude. Polar regolith temperature contrasts do not explain the suppression of epithermal neutrons on pole-facing slopes. The Supplemental on-line materials include supporting results derived from the uncollimated Lunar Prospector Neutron Spectrometer and the LEND Sensor for Epithermal Neutrons. JF - Icarus AU - McClanahan, Timothy P AU - Mitrofanov, I G AU - Boynton, W V AU - Chin, G AU - Bodnarik, J AU - Droege, G AU - Evans, L G AU - Golovin, D AU - Hamara, D AU - Harshman, K AU - Litvak, M L AU - Livengood, Timothy A AU - Malakhov, A AU - Mazarico, E AU - Milikh, G AU - Nandikotkur, G AU - Parsons, A AU - Sagdeev, R AU - Sanin, A AU - Starr, R D AU - Su, J J AU - Murray, J Y1 - 2015/07/15/ PY - 2015 DA - 2015 Jul 15 SP - 88 EP - 99 PB - Elsevier, New York, NY VL - 255 SN - 0019-1035, 0019-1035 KW - water KW - Moon KW - Lunar Reconnaissance Orbiter KW - slopes KW - data processing KW - Lunar Exploration Neutron Detector KW - temperature KW - cold traps KW - hydration KW - volatiles KW - neutrons KW - neutron probe KW - hydrogen KW - solar radiation KW - Lunar Orbiting Laser Altimeter KW - latitude KW - geomorphology KW - diurnal variations KW - Diviner Lunar Radiometer Experiment KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1718050865?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Evidence+for+the+sequestration+of+hydrogen-bearing+volatiles+towards+the+Moon%27s+southern+pole-facing+slopes&rft.au=McClanahan%2C+Timothy+P%3BMitrofanov%2C+I+G%3BBoynton%2C+W+V%3BChin%2C+G%3BBodnarik%2C+J%3BDroege%2C+G%3BEvans%2C+L+G%3BGolovin%2C+D%3BHamara%2C+D%3BHarshman%2C+K%3BLitvak%2C+M+L%3BLivengood%2C+Timothy+A%3BMalakhov%2C+A%3BMazarico%2C+E%3BMilikh%2C+G%3BNandikotkur%2C+G%3BParsons%2C+A%3BSagdeev%2C+R%3BSanin%2C+A%3BStarr%2C+R+D%3BSu%2C+J+J%3BMurray%2C+J&rft.aulast=McClanahan&rft.aufirst=Timothy&rft.date=2015-07-15&rft.volume=255&rft.issue=&rft.spage=88&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.10.001 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 65 N1 - PubXState - NY N1 - Document feature - illus. N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-10-01 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - cold traps; data processing; diurnal variations; Diviner Lunar Radiometer Experiment; geomorphology; hydration; hydrogen; latitude; Lunar Exploration Neutron Detector; Lunar Orbiting Laser Altimeter; Lunar Reconnaissance Orbiter; Moon; neutron probe; neutrons; regolith; slopes; solar radiation; temperature; volatiles; water DO - http://dx.doi.org/10.1016/j.icarus.2014.10.001 ER - TY - JOUR T1 - Solar wind implantation into lunar regolith; hydrogen retention in a surface with defects AN - 1718050859; 2015-093461 AB - Solar wind protons are implanted directly into the top 100 nm of the lunar near-surface region, but can either quickly diffuse out of the surface or be retained, depending upon surface temperature and the activation energy, U, associated with the implantation site. In this work, we explore the distribution of activation energies upon implantation and the associated hydrogen-retention times; this for comparison with recent observation of OH on the lunar surface. We apply a Monte Carlo approach: for simulated solar wind protons at a given local time, we assume a distribution of U values with a central peak, Uc and width, Uw, and derive the fraction retained for long periods in the near-surface. We find that surfaces characterized by a distribution with predominantly large values of U (>1 eV) like that expected at defect sites will retain implanted H (to likely form OH). Surfaces with the distribution predominantly at small values of U (<0.2 eV) will quickly diffuse away implanted H. However, surfaces with a large portion of activation energies between 0.3 eV < U < 0.9 eV will tend to be H-retentive in cool conditions but transform into H-emissive surfaces when warmed (as when the surface rotates into local noon). These mid-range activation energies give rise to a diurnal effect with diffusive loss of H at noontime. JF - Icarus AU - Farrell, W M AU - Hurley, D M AU - Zimmerman, M I Y1 - 2015/07/15/ PY - 2015 DA - 2015 Jul 15 SP - 116 EP - 126 PB - Elsevier, New York, NY VL - 255 SN - 0019-1035, 0019-1035 KW - diffusion KW - Moon KW - Monte Carlo analysis KW - statistical analysis KW - solar wind KW - simulation KW - distribution KW - defects KW - temperature KW - models KW - activation energy KW - hydrogen KW - retention KW - diurnal variations KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1718050859?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Solar+wind+implantation+into+lunar+regolith%3B+hydrogen+retention+in+a+surface+with+defects&rft.au=Farrell%2C+W+M%3BHurley%2C+D+M%3BZimmerman%2C+M+I&rft.aulast=Farrell&rft.aufirst=W&rft.date=2015-07-15&rft.volume=255&rft.issue=&rft.spage=116&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.09.014 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 40 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2015-10-01 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - activation energy; defects; diffusion; distribution; diurnal variations; hydrogen; models; Monte Carlo analysis; Moon; regolith; retention; simulation; solar wind; statistical analysis; temperature DO - http://dx.doi.org/10.1016/j.icarus.2014.09.014 ER - TY - JOUR T1 - Moonshine; diurnally varying hydration through natural distillation on the Moon, detected by the Lunar Exploration Neutron Detector (LEND) AN - 1718050736; 2015-093460 AB - The Lunar Exploration Neutron Detector (LEND), on the polar-orbiting Lunar Reconnaissance Orbiter (LRO) spacecraft, has detected suppression in the Moon's naturally-occurring epithermal neutron leakage flux that is consistent with the presence of diurnally varying quantities of hydrogen in the regolith near the equator. Peak hydrogen concentration (neutron flux suppression) is on the dayside of the dawn terminator and diminishes through the dawn-to-noon sector. The minimum concentration of hydrogen is in the late afternoon and dusk sector. The chemical form of hydrogen is not determinable from these measurements, but other remote sensing methods and anticipated elemental availability suggest water molecules or hydroxyl ions. Signal-to-noise ratio at maximum contrast is 5.6sigma in each of two detector systems. Volatiles are deduced to collect in or on the cold nightside surface and distill out of the regolith after dawn as rotation exposes the surface to sunlight. Liberated volatiles migrate away from the warm subsolar region toward the nearby cold nightside surface beyond the terminator, resulting in maximum concentration at the dawn terminator. The peak concentration within the upper approximately 1 m of regolith is estimated to be 0.0125 + or - 0.0022 weight-percent water-equivalent hydrogen (wt% WEH) at dawn, yielding an accumulation of 190 + or - 30 ml recoverable water per square meter of regolith at each dawn. Volatile transport over the lunar surface in opposition to the Moon's rotation exposes molecules to solar ultraviolet radiation. The short lifetime against photolysis and permanent loss of hydrogen from the Moon requires a resupply rate that greatly exceeds anticipated delivery of hydrogen by solar wind implantation or by meteoroid impacts, suggesting that the surface inventory must be continually resupplied by release from a deep volatile inventory in the Moon. The natural distillation of water from the regolith by sunlight and its capture on the cold night surface may provide energy-efficient access to volatiles for in situ resource utilization (ISRU) by direct capture before volatiles can enter the surface, eliminating the need to actively mine regolith for volatile resource recovery. JF - Icarus AU - Livengood, Timothy A AU - Chin, G AU - Sagdeev, R Z AU - Mitrofanov, I G AU - Boynton, W V AU - Evans, L G AU - Litvak, M L AU - McClanahan, Timothy P AU - Sanin, A B AU - Starr, R D AU - Su, J J Y1 - 2015/07/15/ PY - 2015 DA - 2015 Jul 15 SP - 100 EP - 115 PB - Elsevier, New York, NY VL - 255 SN - 0019-1035, 0019-1035 KW - water KW - resources KW - Moon KW - Lunar Reconnaissance Orbiter KW - photochemistry KW - Lunar Exploration Neutron Detector KW - ultraviolet radiation KW - gases KW - hydroxyl ion KW - hydration KW - volatiles KW - neutrons KW - electromagnetic radiation KW - rotation KW - photolysis KW - ice KW - hydrogen KW - solar radiation KW - diurnal variations KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1718050736?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Moonshine%3B+diurnally+varying+hydration+through+natural+distillation+on+the+Moon%2C+detected+by+the+Lunar+Exploration+Neutron+Detector+%28LEND%29&rft.au=Livengood%2C+Timothy+A%3BChin%2C+G%3BSagdeev%2C+R+Z%3BMitrofanov%2C+I+G%3BBoynton%2C+W+V%3BEvans%2C+L+G%3BLitvak%2C+M+L%3BMcClanahan%2C+Timothy+P%3BSanin%2C+A+B%3BStarr%2C+R+D%3BSu%2C+J+J&rft.aulast=Livengood&rft.aufirst=Timothy&rft.date=2015-07-15&rft.volume=255&rft.issue=&rft.spage=100&rft.isbn=&rft.btitle=&rft.title=Adsorption+and+degradation+of+aniline+on+colloidal+materials+of+soil&rft.issn=&rft_id=info:doi/ L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 46 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables, sketch map N1 - Last updated - 2015-10-01 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - diurnal variations; electromagnetic radiation; gases; hydration; hydrogen; hydroxyl ion; ice; Lunar Exploration Neutron Detector; Lunar Reconnaissance Orbiter; Moon; neutrons; photochemistry; photolysis; regolith; resources; rotation; solar radiation; ultraviolet radiation; volatiles; water DO - http://dx.doi.org/10.1016/j.icarus.2015.04.004 ER - TY - JOUR T1 - The age of lunar south circumpolar craters Haworth, Shoemaker, Faustini, and Shackleton AN - 1718049314; 2015-093457 AB - The interiors of the lunar south circumpolar craters Haworth, Shoemaker, Faustini, and Shackleton contain permanently shadowed regions (PSRs) and have been interpreted to contain sequestered volatiles including water ice. Altimetry data from the Lunar Orbiter Laser Altimeter (LOLA) onboard the Lunar Reconnaissance Orbiter provide a new means of examining the permanently shadowed interiors of these craters in unprecedented detail. In this study, we used extremely high-resolution gridded LOLA data of Haworth, Shoemaker, Faustini, and Shackleton to determine the size-frequency distributions and the spatial density of craters superposing their rims, inner slopes, and floors. Based on their population of superposed D > or = 2 km craters, Haworth, Shoemaker, and Faustini have pre-Nectarian formation ages. Shackleton is interpreted as having a Late Imbrian age on the basis of craters with diameter D > or = 0.5 km superposed on its rim. The local density of craters with sub-km diameters across our study area is strongly dependent on slope; because of its steep interior slopes, the lifetime of craters on the interior of Shackleton is limited. The slope-dependence of the small crater population implies that the population in this size range is controlled primarily by the rate at which craters are destroyed. This is consistent with the hypothesis that crater removal and resurfacing is a result of slope-dependent processes such as diffusive mass wasting and seismic shaking, linked to micrometeorite and meteorite bombardment. Epithermal neutron flux data and UV albedo data show that these circumpolar PSRs, particularly Shoemaker, may have approximately 1-2% water ice by mass in their highly porous surface regolith, and that Shoemaker may have approximately 5% or more water ice by mass in the near subsurface. The ancient formation ages of Shoemaker, Faustini and Haworth, and the Late Imbrian ( approximately 3.5 Ga) crater retention ages of their floors suggests that any water ice that might have been deposited in their permanently shadowed areas was insufficient to modify the superposed crater population since that time. JF - Icarus AU - Tye, A R AU - Fassett, C I AU - Head, J W AU - Mazarico, E AU - Basilevsky, A T AU - Neumann, G A AU - Smith, D E AU - Zuber, M T Y1 - 2015/07/15/ PY - 2015 DA - 2015 Jul 15 SP - 70 EP - 77 PB - Elsevier, New York, NY VL - 255 SN - 0019-1035, 0019-1035 KW - Lunar Orbiter Laser Altimeter KW - cratering KW - albedo KW - relative age KW - impact features KW - Lunar Reconnaissance Orbiter KW - slopes KW - Haworth Crater KW - lunar craters KW - spatial distribution KW - Shoemaker Crater KW - ice KW - permanently shadowed regions KW - ultraviolet spectra KW - spectra KW - water KW - Moon KW - Shackleton Crater KW - Imbrian KW - size KW - volatiles KW - neutrons KW - Faustini Crater KW - impact craters KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1718049314?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=The+age+of+lunar+south+circumpolar+craters+Haworth%2C+Shoemaker%2C+Faustini%2C+and+Shackleton&rft.au=Tye%2C+A+R%3BFassett%2C+C+I%3BHead%2C+J+W%3BMazarico%2C+E%3BBasilevsky%2C+A+T%3BNeumann%2C+G+A%3BSmith%2C+D+E%3BZuber%2C+M+T&rft.aulast=Tye&rft.aufirst=A&rft.date=2015-07-15&rft.volume=255&rft.issue=&rft.spage=70&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.03.016 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 24 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables, geol. sketch maps N1 - Last updated - 2015-10-01 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - albedo; cratering; Faustini Crater; Haworth Crater; ice; Imbrian; impact craters; impact features; lunar craters; Lunar Orbiter Laser Altimeter; Lunar Reconnaissance Orbiter; Moon; neutrons; permanently shadowed regions; regolith; relative age; Shackleton Crater; Shoemaker Crater; size; slopes; spatial distribution; spectra; ultraviolet spectra; volatiles; water DO - http://dx.doi.org/10.1016/j.icarus.2015.03.016 ER - TY - RPRT T1 - NASA's newest astronauts complete training AN - 1696285995 JF - U.S. Department of Defense Information / FIND AU - NASA Press Release Y1 - 2015/07/14/ PY - 2015 DA - 2015 Jul 14 CY - Lanham PB - Federal Information & News Dispatch, Inc. KW - Military UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696285995?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/Military+Database&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=report&rft.jtitle=&rft.atitle=&rft.au=NASA+Press+Release&rft.aulast=NASA+Press+Release&rft.aufirst=&rft.date=2015-07-14&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=NASA%27s+newest+astronauts+complete+training&rft.title=NASA%27s+newest+astronauts+complete+training&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) 2015 Federal Information & News Dispatch, Inc. N1 - Last updated - 2015-07-15 ER - TY - JOUR T1 - Detached shear-layer instability and entrainment in the wake of a flat plate with turbulent separating boundary layers AN - 1701499297; PQ0001708019 AB - The near and very near wake of a flat plate with a circular trailing edge, with vigorous vortex shedding, is investigated with data from direct numerical simulations (DNS). Computations were performed for four different combinations of the Reynolds numbers based on plate thickness () and momentum thickness near the trailing edge (). Unlike the case of the cylinder, these Reynolds numbers are independent parameters for the flat plate. The objectives of the study are twofold, to investigate the entrainment process when the separating boundary layers are turbulent and to better understand the instability of the detached shear layers (DSLs). A visualization of the entrainment process, the effect of changing the ratio on entrainment and wake-velocity statistics, and a way of understanding entrainment in a phase-averaged sense via distributions of the turbulent transport rate are provided here. The discussion on shear-layer instability focuses on the role of log-layer eddies in the destabilization process, the effect of high-speed streaks in the turbulent boundary layer in the vicinity of the trailing edge on shear-layer vortex generation rates, and a relationship between the prevalence of shear-layer vortex generation and shedding phase that is a result of an interaction between the shedding process and the shear-layer instability mechanism. A power-law relationship between the ratio of shear-layer and shedding frequencies and the Reynolds numbers mentioned above is obtained. A discussion of the relative magnitudes of the exponents is provided. A second power-law relationship between shed-vortex strength and these two Reynolds numbers is also proposed. JF - Journal of Fluid Mechanics AU - Rai, Man Mohan AD - NASA Ames Research Center, Moffett Field, CA 94035, USA, man.m.rai@nasa.gov Y1 - 2015/07/10/ PY - 2015 DA - 2015 Jul 10 SP - 5 EP - 36 PB - Cambridge University Press, The Edinburgh Building, Cambridge CB2 2RU United Kingdom VL - 774 SN - 0022-1120, 0022-1120 KW - Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Entrainment KW - Statistics KW - Reynolds Number KW - Boundary Layers KW - Statistical analysis KW - Vortex shedding KW - Vortex generation KW - Vortexes KW - Fluid mechanics KW - Statistical Analysis KW - Reynolds number KW - Turbulent boundary layer KW - Shear KW - Wakes KW - Cylinders KW - Oceanic eddies KW - Fluid Mechanics KW - Strength KW - Eddies KW - Numerical simulations KW - Boundary layers KW - Instability KW - M2 551.511:Mechanics and Thermodynamics of the Atmosphere (551.511) KW - Q2 09183:Physics and chemistry KW - SW 6010:Structures UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1701499297?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Fluid+Mechanics&rft.atitle=Detached+shear-layer+instability+and+entrainment+in+the+wake+of+a+flat+plate+with+turbulent+separating+boundary+layers&rft.au=Rai%2C+Man+Mohan&rft.aulast=Rai&rft.aufirst=Man&rft.date=2015-07-10&rft.volume=774&rft.issue=&rft.spage=5&rft.isbn=&rft.btitle=&rft.title=Journal+of+Fluid+Mechanics&rft.issn=00221120&rft_id=info:doi/10.1017%2Fjfm.2015.254 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Number of references - 16 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Fluid mechanics; Entrainment; Cylinders; Boundary layers; Vortex shedding; Oceanic eddies; Reynolds number; Turbulent boundary layer; Wakes; Numerical simulations; Statistical analysis; Vortex generation; Vortexes; Instability; Shear; Strength; Eddies; Statistics; Reynolds Number; Statistical Analysis; Boundary Layers; Fluid Mechanics DO - http://dx.doi.org/10.1017/jfm.2015.254 ER - TY - JOUR T1 - Modeling circulation and seasonal fluctuations in perennially ice-covered and ice-walled Lake Untersee, Antarctica AN - 1832591889; 743808-5 AB - Lake Untersee, Antarctica, is a freshwater perennially ice covered lake bounded along its north by the Anuchin glacier. The Massachusetts Institute of Technology general circulation model, used on a representative wedge-shaped lake and actual bathymetry for Lake Untersee, produces estimates for circulation and long-term temperature and mixing trends. Modeled circulation is dominated by an anticyclonic gyre in front of the glacier, with slower (sub math xmlns="http://www.w3.org/1998/Math/MathML" xmlns:wiley="http://www.wiley.com/namespaces/wiley/wiley" display="inline" altimg="urn:x-wiley:00243590:media:lno10086:lno10086-math-0001" wiley:location="equation/lno10086-math-0001.png" (super (sub mrow (super (sub mo (super approximately (sub /mo (super (sub mo (super (sub /mo (super (sub mn (super 3 (sub /mn (super (sub mo (super (sub /mo (super (sub msup (super (sub mrow (super (sub mtext (super mm (sub /mtext (super (sub mo (super (sub /mo (super (sub mi mathvariant="normal" (super s (sub /mi (super (sub /mrow (super (sub mrow (super (sub mo (super - (sub /mo (super (sub mn (super 1 (sub /mn (super (sub /mrow (super (sub /msup (super (sub /mrow (super (sub /math (super flow exhibited around the lake's perimeter, allowing effective mixing throughout most of the lake with time scales of one month. Estimated velocities bound maximal glacial flour particle size at (sub math xmlns="http://www.w3.org/1998/Math/MathML" xmlns:wiley="http://www.wiley.com/namespaces/wiley/wiley" display="inline" altimg="urn:x-wiley:00243590:media:lno10086:lno10086-math-0002" wiley:location="equation/lno10086-math-0002.png" (super (sub mrow (super (sub mo (super approximately (sub /mo (super (sub mo (super (sub /mo (super (sub mn (super 10 (sub /mn (super (sub mo (super (sub /mo (super (sub mi (super mu (sub /mi (super (sub mi mathvariant="normal" (super m (sub /mi (super (sub /mrow (super (sub /math (super for effective transport throughout the lake, consistent with the sediment's mostly fine composition observed in field studies, and mixing time scales mean nonuniformities in measured (sub math xmlns="http://www.w3.org/1998/Math/MathML" xmlns:wiley="http://www.wiley.com/namespaces/wiley/wiley" display="inline" altimg="urn:x-wiley:00243590:media:lno10086:lno10086-math-0003" wiley:location="equation/lno10086-math-0003.png" (super (sub mrow (super (sub msub (super (sub mi mathvariant="normal" (super O (sub /mi (super (sub mn (super 2 (sub /mn (super (sub /msub (super (sub /mrow (super (sub /math (super concentration likely require recent or ongoing sources. Areas in which large temperature gradients prevent exchange of fluid demonstrate minimal mixing, such as the lake's upper water layers and the anoxic basin in the south, and circulation is consistently slowed in the northern sheltered bay area. Mean flow velocities fluctuate by about one fifth of their magnitude between summer and winter, and the lake's almost homothermal body temperature varies by about one tenth of a degree over the same period. While calculated temperature profiles qualitatively agree with field data, the model's long-term equilibrium temperature differs substantially, likely due to poor description of heat transfer with the glacier. Model robustness tests show results differ by approximately 10% when either grid scale or water temperature are halved. Abstract Copyright (2015), The Authors Limnology and Oceanography published by Wiley Periodicals, Inc. on behalf of Association for the Sciences of Limnology and Oceanography. JF - Limnology and Oceanography AU - Steel, H C B AU - McKay, C P AU - Andersen, D T Y1 - 2015/07// PY - 2015 DA - July 2015 SP - 1139 EP - 1155 PB - American Society of Limnology and Oceanography, Ann Arbor, MI VL - 60 IS - 4 SN - 0024-3590, 0024-3590 KW - oxygen KW - lakes KW - ice cover KW - fresh water KW - simulation KW - temperature KW - Lake Untersee KW - circulation KW - tracers KW - velocity KW - pH KW - Eh KW - hydrology KW - general circulation models KW - solutes KW - Anuchin Glacier KW - Queen Maud Land KW - depth KW - fluctuations KW - limnology KW - ice-covered lakes KW - Antarctica KW - seasonal variations KW - meltwater KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832591889?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Limnology+and+Oceanography&rft.atitle=Modeling+circulation+and+seasonal+fluctuations+in+perennially+ice-covered+and+ice-walled+Lake+Untersee%2C+Antarctica&rft.au=Steel%2C+H+C+B%3BMcKay%2C+C+P%3BAndersen%2C+D+T&rft.aulast=Steel&rft.aufirst=H+C&rft.date=2015-07-01&rft.volume=60&rft.issue=4&rft.spage=1139&rft.isbn=&rft.btitle=&rft.title=Limnology+and+Oceanography&rft.issn=00243590&rft_id=info:doi/10.1002%2Flno.10086 L2 - http://www.aslo.org/lo/ LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Number of references - 57 N1 - PubXState - MI N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2017-01-24 N1 - CODEN - LIOCAH N1 - SubjectsTermNotLitGenreText - Antarctica; Anuchin Glacier; circulation; depth; Eh; fluctuations; fresh water; general circulation models; hydrology; ice cover; ice-covered lakes; Lake Untersee; lakes; limnology; meltwater; oxygen; pH; Queen Maud Land; seasonal variations; simulation; solutes; temperature; tracers; velocity DO - http://dx.doi.org/10.1002/lno.10086 ER - TY - JOUR T1 - HEMODOSE: A Biodosimetry Tool Based on Multi-type Blood Cell Counts AN - 1768584447; PQ0002679667 AB - Peripheral blood cell counts are important biomarkers of radiation exposure. In this work, a simplified compartmental modeling approach is applied to simulate the perturbation of the hematopoiesis system in humans after radiation exposure, and HemoDose software is reported to estimate individuals' absorbed doses based on multi-type blood cell counts. Testing with patient data in some historical accidents indicates that either single or serial granulocyte, lymphocyte, leukocyte, and platelet counts after exposure can be robust indicators of the absorbed doses. In addition, such correlation exists not only in the early time window (1 or 2 d) but also in the late phase (up to 4 wk) after exposure, when the four types of cell counts are combined for analysis. These demonstrate the capability of HemoDose as a rapid point-of-care diagnostic or centralized high-throughput assay system for personnel exposed to unintended high doses of radiation, especially in large-scale nuclear/radiological disaster scenarios involving mass casualties. JF - Health Physics AU - Hu, Shaowen AU - Blakely, William F AU - Cucinotta, Francis A AD - Wyle Laboratories, NASA Johnson Space Center, Houston, TX 77058, Shaowen.Hu-1@nasa.gov Y1 - 2015/07// PY - 2015 DA - July 2015 SP - 54 EP - 68 PB - Williams & Wilkins, 351 W. Camden St. Baltimore MD 21201 United States VL - 109 IS - 1 SN - 0017-9078, 0017-9078 KW - Health & Safety Science Abstracts KW - Bioindicators KW - Historical account KW - Computer programs KW - Accidents KW - Radiation KW - Occupational safety KW - Disasters KW - Lymphocytes KW - H 6000:Natural Disasters/Civil Defense/Emergency Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1768584447?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ahealthsafetyabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Health+Physics&rft.atitle=HEMODOSE%3A+A+Biodosimetry+Tool+Based+on+Multi-type+Blood+Cell+Counts&rft.au=Hu%2C+Shaowen%3BBlakely%2C+William+F%3BCucinotta%2C+Francis+A&rft.aulast=Hu&rft.aufirst=Shaowen&rft.date=2015-07-01&rft.volume=109&rft.issue=1&rft.spage=54&rft.isbn=&rft.btitle=&rft.title=Health+Physics&rft.issn=00179078&rft_id=info:doi/10.1097%2FHP.0000000000000295 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-02-01 N1 - Last updated - 2016-03-17 N1 - SubjectsTermNotLitGenreText - Bioindicators; Computer programs; Historical account; Accidents; Radiation; Occupational safety; Disasters; Lymphocytes DO - http://dx.doi.org/10.1097/HP.0000000000000295 ER - TY - JOUR T1 - TanDEM-X Pol-InSAR Inversion for Mangrove Canopy Height Estimation AN - 1765958288; PQ0002544454 AB - This paper presents mangrove canopy height estimations using single- and dual-pol TanDEM-X (TDX) data by means of Pol-InSAR techniques. Using the TDX data for forest applications, the penetration capability of X-band into the volume and the polarimetric diversity of interferometric coherence can create false effects that could sometimes lead to biased three-dimensional (3-D) forest parameter estimation. Moreover, in the case of single-pol TDX acquisition (i.e., one independent complex interferometric coherence), it is not possible to perform the inversion without external topographic information due to the underdetermined problem for Pol-InSAR inversion. To solve these problems, the ground phase in the Pol-InSAR model has been estimated directly from TDX interferograms with an assumption that the underlying topography (i.e., water surface level) over mangroves is flat and negligible. With the estimated ground phase that represents water-level elevation in mangroves, the Pol-InSAR inversion from the single- and dual-pol TDX data did not rely on an external DTM data set. The inversion results were validated against airborne lidar measurements in Campeche, Mexico, and in the Zambezi Delta, Mozambique. The single- and dual-pol inversion results showed a successful inversion performance with a high correlation coefficient (0.851-0.919) and with low RMSEs (1.069-1.727 m). The entire inversion performance quality over mangroves at X-band could reach to 10% height estimation accuracy. In addition to Pol-InSAR inversion results, the location of phase center was checked and assessed. The results showed a surprisingly deep location of phase centers from top mangrove canopy (5-7 m, up to 12.36 m) with a similarity at HH and VV polarization. JF - IEEE Journal on Selected Topics in Applied Earth Observations and Remote Sensing AU - Lee, Seung-Kuk AU - Fatoyinbo, Temilola E AD - Biospheric Sciences Laboratory, NASA/GSFC, Greenbelt, MD, USA Y1 - 2015/07// PY - 2015 DA - July 2015 SP - 3608 EP - 3618 PB - Institute of Electrical and Electronics Engineers, Inc., 3 Park Avenue, 17th Fl New York NY 10016-5997 United States VL - 8 IS - 7 SN - 1939-1404, 1939-1404 KW - Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Remote Sensing KW - Correlation Coefficient KW - Remote sensing KW - Deltas KW - Topographic effects KW - ISW, Mozambique KW - ASW, Mexico, Campeche KW - Canopies KW - Canopy KW - Topography KW - Water Level KW - Polarization KW - Inversions KW - Mexico KW - Elevation KW - Mangrove Swamps KW - LIDAR KW - Mangroves KW - AQ 00001:Water Resources and Supplies KW - Q2 09262:Methods and instruments KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765958288?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=IEEE+Journal+on+Selected+Topics+in+Applied+Earth+Observations+and+Remote+Sensing&rft.atitle=TanDEM-X+Pol-InSAR+Inversion+for+Mangrove+Canopy+Height+Estimation&rft.au=Lee%2C+Seung-Kuk%3BFatoyinbo%2C+Temilola+E&rft.aulast=Lee&rft.aufirst=Seung-Kuk&rft.date=2015-07-01&rft.volume=8&rft.issue=7&rft.spage=3608&rft.isbn=&rft.btitle=&rft.title=IEEE+Journal+on+Selected+Topics+in+Applied+Earth+Observations+and+Remote+Sensing&rft.issn=19391404&rft_id=info:doi/10.1109%2FJSTARS.2015.2431646 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-02-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Remote sensing; Topographic effects; Canopies; Polarization; LIDAR; Mangroves; Inversions; Remote Sensing; Correlation Coefficient; Elevation; Water Level; Deltas; Mangrove Swamps; Canopy; Topography; ISW, Mozambique; ASW, Mexico, Campeche; Mexico DO - http://dx.doi.org/10.1109/JSTARS.2015.2431646 ER - TY - JOUR T1 - Linking from observations to data to actionable science in the climate data initiative AN - 1753472309; PQ0002398943 AB - A tremendous amount of Earth and Climate related data and information are available from the U.S. Federal government. Among the proposed actions of the President's Climate Action Plan are several efforts to foster the use of existing data to encourage development of additional data products and tools that can be used to improve community resilience and prepare for the impacts of climate change. Building on previous efforts to organize the presentation of this material from Federal web pages and data centers, the Climate Data Initiative is working together with other related efforts to link Earth observation systems through to data resulting from them and on to related web pages, case studies, decision making tools, and other relevant content. Often such information is not located in a single web site, data center, or even a single agency, but distributed across the Federal Government. Linking such information across the breadth of interagency holdings can increase understanding of the complexity of those holdings and their inter-relationships and allow a more cohesive presentation of all of the material. JF - IEEE Conferences AU - Tilmes, Curt AU - Privette, Ana Pinheiro AU - Chen, Jeffrey AU - Ramachandran, Rahul AU - Bugbee, Kaylin M AU - Wolfe, Robert E AD - NASA Goddard Space Flight Center, Greenbelt, MD 20771 Y1 - 2015/07// PY - 2015 DA - July 2015 SP - 1354 EP - 1357 PB - Institute of Electrical and Electronics Engineers, Inc., 345 E. 47th St. NY NY 10017-2394 USA KW - Sustainability Science Abstracts KW - Decision making KW - Case studies KW - Conferences KW - Climate KW - Climate change KW - Remote sensing KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1753472309?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=IEEE+Conferences&rft.atitle=Linking+from+observations+to+data+to+actionable+science+in+the+climate+data+initiative&rft.au=Tilmes%2C+Curt%3BPrivette%2C+Ana+Pinheiro%3BChen%2C+Jeffrey%3BRamachandran%2C+Rahul%3BBugbee%2C+Kaylin+M%3BWolfe%2C+Robert+E&rft.aulast=Tilmes&rft.aufirst=Curt&rft.date=2015-07-01&rft.volume=&rft.issue=&rft.spage=1354&rft.isbn=&rft.btitle=&rft.title=IEEE+Conferences&rft.issn=&rft_id=info:doi/10.1109%2FIGARSS.2015.7326027 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-01-01 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Decision making; Case studies; Conferences; Climate change; Climate; Remote sensing DO - http://dx.doi.org/10.1109/IGARSS.2015.7326027 ER - TY - JOUR T1 - LIME silicates in amoeboid olivine aggregates in carbonaceous chondrites; indicator of nebular and asteroidal processes AN - 1734269301; 2015-091593 AB - MnO/FeO ratios in olivine from amoeboid olivine aggregates (AOAs) reflect conditions of nebular condensation and can be used in concert with matrix textures to compare metamorphic conditions in carbonaceous chondrites. LIME (low-iron, Mn-enriched) olivine was identified in AOAs from Y-81020 (CO3.05), Kaba (CV approximately 3.1), and in Y-86009 (CV3), Y-86751 (CV3), NWA 1152 (CR/CV3), but was not identified in AOAs from Efremovka (CV3.1-3.4) or Allende (CV>3.6). According to thermodynamic models of nebular condensation, LIME olivine is stable at lower temperatures than Mn-poor olivine and at low oxygen fugacities (dust enrichment 95) ) in our study, whereas Efremovka AOAs are slightly Fe-rich (Fo (sub >92) ). AOA olivines from Kaba are mostly forsteritic, but rare Fe-rich olivine precipitated from an aqueous fluid. A combination of precipitation of Fe-rich olivine and diffusion of Fe into primary olivine grains resulted in iron-rich compositions (Fo (sub 97-59) ) in Allende AOAs. Variations from fine-grained, nonporous matrix toward higher porosity and coarser lath-like matrix olivine can be divided into six stages represented by (1) Y-81020, Efremovka, NWA 1152; (2) Y-86751 lithology B; (3) Y-86009; (4) Kaba; (5) Y-86751 lithology A; (6) Allende. These stages are inferred to represent general degree of metamorphism, although the specific roles of thermally driven grain growth and diffusion versus aqueous dissolution and precipitation remain uncertain. Abstract Copyright The Meteoritical Society, 2015. JF - Meteoritics & Planetary Science AU - Komatsu, Mutsumi AU - Fagan, Timothy J AU - Mikouchi, Takashi AU - Petaev, Michail I AU - Zolensky, Michael E Y1 - 2015/07// PY - 2015 DA - July 2015 SP - 1271 EP - 1294 PB - Meteoritical Society, Fayetteville, AR VL - 50 IS - 7 SN - 1086-9379, 1086-9379 KW - silicates KW - Northwest Africa Meteorites KW - NWA 1152 KW - stony meteorites KW - asteroids KW - olivine group KW - low iron, manganese enriched olivine KW - aqueous solutions KW - CV chondrites KW - manganese KW - iron KW - CO chondrites KW - meteorites KW - CR chondrites KW - olivine KW - Y 86009 KW - orthosilicates KW - LIME olivine KW - amoeboid olivine aggregates KW - Kaba Meteorite KW - chondrites KW - Yamato Meteorites KW - diffusion KW - condensation KW - textures KW - parent bodies KW - matrix KW - Y 81020 KW - carbonaceous chondrites KW - metamorphism KW - solar nebula KW - nesosilicates KW - aqueous alteration KW - precipitation KW - metals KW - Y 86751 KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734269301?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=LIME+silicates+in+amoeboid+olivine+aggregates+in+carbonaceous+chondrites%3B+indicator+of+nebular+and+asteroidal+processes&rft.au=Komatsu%2C+Mutsumi%3BFagan%2C+Timothy+J%3BMikouchi%2C+Takashi%3BPetaev%2C+Michail+I%3BZolensky%2C+Michael+E&rft.aulast=Komatsu&rft.aufirst=Mutsumi&rft.date=2015-07-01&rft.volume=50&rft.issue=7&rft.spage=1271&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12460 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 105 N1 - PubXState - AR N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2015-11-19 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - amoeboid olivine aggregates; aqueous alteration; aqueous solutions; asteroids; carbonaceous chondrites; chondrites; CO chondrites; condensation; CR chondrites; CV chondrites; diffusion; iron; Kaba Meteorite; LIME olivine; low iron, manganese enriched olivine; manganese; matrix; metals; metamorphism; meteorites; nesosilicates; Northwest Africa Meteorites; NWA 1152; olivine; olivine group; orthosilicates; parent bodies; precipitation; silicates; solar nebula; stony meteorites; textures; Y 81020; Y 86009; Y 86751; Yamato Meteorites DO - http://dx.doi.org/10.1111/maps.12460 ER - TY - JOUR T1 - Near-Sun speed of CMEs and the magnetic nonpotentiality of their source active regions AN - 1718939035; PQ0001865603 AB - We show that the speed of the fastest coronal mass ejections (CMEs) that an active region (AR) can produce can be predicted from a vector magnetogram of the AR. This is shown by logarithmic plots of CME speed (from the SOHO Large Angle and Spectrometric Coronagraph CME catalog) versus each of ten AR-integrated magnetic parameters (AR magnetic flux, three different AR magnetic-twist parameters, and six AR free-magnetic-energy proxies) measured from the vertical and horizontal field components of vector magnetograms (from the Solar Dynamics Observatory's Helioseismic and Magnetic Imager) of the source ARs of 189 CMEs. These plots show the following: (1) the speed of the fastest CMEs that an AR can produce increases with each of these whole-AR magnetic parameters and (2) that one of the AR magnetic-twist parameters and the corresponding free-magnetic-energy proxy each determine the CME-speed upper limit line somewhat better than any of the other eight whole-AR magnetic parameters. Key Points * Vector magnetograms of source ARs of 189 CMEs are analyzed * The speed of the fastest CMEs produced by ARs increases with twist and magnetic energy parameters * One of the parameters determines the CME-speed upper limit line better than others JF - Geophysical Research Letters AU - Tiwari, Sanjiv K AU - Falconer, David A AU - Moore, Ronald L AU - Venkatakrishnan, P AU - Winebarger, Amy R AU - Khazanov, Igor G AD - NASA Marshall Space Flight Center, Huntsville, Alabama, USA. Y1 - 2015/07// PY - 2015 DA - July 2015 SP - 5702 EP - 5710 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 42 IS - 14 SN - 0094-8276, 0094-8276 KW - Environmental Engineering Abstracts (EN); CSA / ASCE Civil Engineering Abstracts (CE); Aerospace & High Technology Database (AH) KW - Magnetic flux KW - Solar observatories KW - Cobalt KW - Coronal mass ejection KW - Coronagraphs KW - Geophysics KW - Vectors (mathematics) KW - Mathematical analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1718939035?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=Near-Sun+speed+of+CMEs+and+the+magnetic+nonpotentiality+of+their+source+active+regions&rft.au=Tiwari%2C+Sanjiv+K%3BFalconer%2C+David+A%3BMoore%2C+Ronald+L%3BVenkatakrishnan%2C+P%3BWinebarger%2C+Amy+R%3BKhazanov%2C+Igor+G&rft.aulast=Tiwari&rft.aufirst=Sanjiv&rft.date=2015-07-01&rft.volume=42&rft.issue=14&rft.spage=5702&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL064865 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-10-01 N1 - Last updated - 2017-01-05 DO - http://dx.doi.org/10.1002/2015GL064865 ER - TY - JOUR T1 - Improving the modelling of short-wave radiation through the use of a 3D scene construction algorithm AN - 1712773097; PQ0001915438 AB - Active satellite sensors, such as Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) and CloudSat, provide cloud properties that are not available from passive sensors, such as MODerate-resolution Imaging Spectroradiometer (MODIS). While active sensors provide vertical profiles of clouds, their spatial coverage is limited to their narrow, nadir ground-track. As a result, estimation of radiation by combining active sensors and broadband instrument has limitations due to their different spatial coverages. This study uses a scene construction algorithm (SCA) and MODIS data to extend two-dimensional (2D) nadir cloud profiles into the cross-track direction, and examines how the resulting constructed 3D cloud fields improve simulation of solar radiative transfer. Clouds and the Earth's Radiant Energy System (CERES) radiances are used as references to assess the improvements. While use of constructed 3D cloud fields only slightly impacts mean-bias errors for instantaneous 20 km CERES footprint-averaged top-of-atmosphere (TOA) radiances, reductions in random errors are about 40%. The largest improvements in TOA radiance simulation are for clouds with small-scale horizontal inhomogeneity such as stratocumulus and cumulus. In contrast, uniform clouds such as nimbostratus, and deep convective clouds (Dc) show little response to the SCA. The impact of using the SCA on instantaneous surface irradiances is significant for stratocumulus and cumulus, but weak for nimbostratus and Dc. Conversely, SCA significantly influences atmospheric absorption and heating rates for nimbostratus and Dc. Differences in TOA radiances simulated by 1D and 3D transfer models are smaller than differences due to use of only the 2D nadir cross-sections and the 3D constructed fields. This is because of smoothing of 3D radiative effects when averaged up to CERES footprints. For surface irradiance and atmospheric absorption, however, differences simulated by 1D and 3D transfer models are more comparable to differences that stem from use of 2D and 3D cloud information. JF - Quarterly Journal of the Royal Meteorological Society AU - Ham, Seung-Hee AU - Kato, Seiji AU - Barker, Howard W AU - Rose, Fred G AU - Sun-Mack, Sunny AD - NASA Langley Research Center, Hampton, VA, USA. Y1 - 2015/07// PY - 2015 DA - July 2015 SP - 1870 EP - 1883 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 141 IS - 690 SN - 0035-9009, 0035-9009 KW - Oceanic Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; Environment Abstracts KW - Remote Sensing KW - Sensors KW - Remote sensing KW - Algorithms KW - Lidar KW - Radiance KW - CLOUDSAT KW - Asteroids KW - Radiation KW - Absorption KW - Meteorology KW - Cloud properties KW - MODIS (Moderate Resolution Imaging Spectrometer) KW - Modelling KW - Satellite Technology KW - Mathematical models KW - Simulation Analysis KW - Construction KW - Simulation KW - Satellites KW - Imaging techniques KW - Vertical profiles KW - Clouds KW - Atmospheric absorption KW - Satellite data KW - Numerical simulations KW - Energy KW - Lidar applications KW - Convective activity KW - Radiative transfer KW - Short-wave radiation KW - SW 0810:General KW - O 4080:Pollution - Control and Prevention KW - M2 551.521.1/.18:Solar (551.521.1/.18) KW - Q2 09244:Air-sea coupling KW - ENA 01:Air Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1712773097?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Quarterly+Journal+of+the+Royal+Meteorological+Society&rft.atitle=Improving+the+modelling+of+short-wave+radiation+through+the+use+of+a+3D+scene+construction+algorithm&rft.au=Ham%2C+Seung-Hee%3BKato%2C+Seiji%3BBarker%2C+Howard+W%3BRose%2C+Fred+G%3BSun-Mack%2C+Sunny&rft.aulast=Ham&rft.aufirst=Seung-Hee&rft.date=2015-07-01&rft.volume=141&rft.issue=690&rft.spage=1870&rft.isbn=&rft.btitle=&rft.title=Quarterly+Journal+of+the+Royal+Meteorological+Society&rft.issn=00359009&rft_id=info:doi/10.1002%2Fqj.2491 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-09-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Clouds; Radiance; Mathematical models; Radiation; Sensors; Radiative transfer; Imaging techniques; Vertical profiles; Modelling; Algorithms; Atmospheric absorption; Satellite data; Asteroids; Numerical simulations; CLOUDSAT; Convective activity; Lidar applications; MODIS (Moderate Resolution Imaging Spectrometer); Cloud properties; Short-wave radiation; Energy; Remote sensing; Absorption; Lidar; Simulation; Meteorology; Satellites; Remote Sensing; Satellite Technology; Construction; Simulation Analysis DO - http://dx.doi.org/10.1002/qj.2491 ER - TY - JOUR T1 - A lag-1 smoother approach to system-error estimation: sequential method AN - 1712770024; PQ0001915407 AB - Starting from sequential data assimilation arguments, the present work shows how to use residual statistics from filtering and lag-1 (6 h) smoothing to infer components of the system (model) error covariance matrix that project on to a dense observing network. The residuals relationships involving the system-error covariance matrix are similar to those available to derive background, observation and analysis-error covariance information from filter residual statistics. An illustration of the approach is given for two low-dimensional dynamical systems: a linear damped harmonic oscillator and the nonlinear Lorenz system. The application examples consider the important case of evaluating the ability to estimate the model-error covariance from residual time series obtained from suboptimal filters and smoothers that assume the model to be perfect. The examples show the residuals to contain the necessary information to allow for such estimation. The examples also illustrate the consequences of estimating covariances through time series of residuals (available in practice) instead of multiple realizations from Monte Carlo sampling. A recast of the sequential approach into variational approach language will appear in a companion article. JF - Quarterly Journal of the Royal Meteorological Society AU - Todling, Ricardo AD - Global Modeling and Assimilation Office, NASA Goddard Space Flight Center, Greenbelt, MD, USA. Y1 - 2015/07// PY - 2015 DA - July 2015 SP - 1502 EP - 1513 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 141 IS - 690 SN - 0035-9009, 0035-9009 KW - Meteorological & Geoastrophysical Abstracts; Oceanic Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Filters KW - Statistics KW - Statistical analysis KW - Monte Carlo method KW - Sampling KW - Time series analysis KW - Identification KW - Data assimilation KW - Modelling KW - Methodology KW - Q2 09103:Information services KW - O 2090:Instruments/Methods KW - SW 0810:General KW - M2 551.5:General (551.5) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1712770024?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Quarterly+Journal+of+the+Royal+Meteorological+Society&rft.atitle=A+lag-1+smoother+approach+to+system-error+estimation%3A+sequential+method&rft.au=Todling%2C+Ricardo&rft.aulast=Todling&rft.aufirst=Ricardo&rft.date=2015-07-01&rft.volume=141&rft.issue=690&rft.spage=1502&rft.isbn=&rft.btitle=&rft.title=Quarterly+Journal+of+the+Royal+Meteorological+Society&rft.issn=00359009&rft_id=info:doi/10.1002%2Fqj.2460 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-09-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Statistical analysis; Identification; Methodology; Modelling; Monte Carlo method; Time series analysis; Data assimilation; Filters; Statistics; Sampling DO - http://dx.doi.org/10.1002/qj.2460 ER - TY - JOUR T1 - Laurentide ice-sheet instability during the last deglaciation AN - 1703691886; 2015-076459 JF - Nature Geoscience AU - Ullman, David J AU - Carlson, Anders E AU - Anslow, Faron S AU - LeGrande, Allegra N AU - Licciardi, Joseph M Y1 - 2015/07// PY - 2015 DA - July 2015 SP - 534 EP - 537 PB - Nature Publishing Group, London VL - 8 IS - 7 SN - 1752-0894, 1752-0894 KW - general circulation models KW - Laurentide ice sheet KW - ablation KW - Quaternary KW - lower Holocene KW - stability KW - simulation KW - paleoclimatology KW - Holocene KW - energy balance KW - ice sheets KW - deglaciation KW - climate change KW - Cenozoic KW - paleoenvironment KW - mass balance KW - glacial geology KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703691886?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nature+Geoscience&rft.atitle=Laurentide+ice-sheet+instability+during+the+last+deglaciation&rft.au=Ullman%2C+David+J%3BCarlson%2C+Anders+E%3BAnslow%2C+Faron+S%3BLeGrande%2C+Allegra+N%3BLicciardi%2C+Joseph+M&rft.aulast=Ullman&rft.aufirst=David&rft.date=2015-07-01&rft.volume=8&rft.issue=7&rft.spage=534&rft.isbn=&rft.btitle=&rft.title=Nature+Geoscience&rft.issn=17520894&rft_id=info:doi/10.1038%2FNGEO2463 L2 - http://www.nature.com/ngeo/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 28 N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2015-08-13 N1 - SubjectsTermNotLitGenreText - ablation; Cenozoic; climate change; deglaciation; energy balance; general circulation models; glacial geology; Holocene; ice sheets; Laurentide ice sheet; lower Holocene; mass balance; paleoclimatology; paleoenvironment; Quaternary; simulation; stability DO - http://dx.doi.org/10.1038/NGEO2463 ER - TY - JOUR T1 - River meandering on Earth and Mars; a comparative study of Aeolis Dorsa meanders, Mars and possible terrestrial analogs of the Usuktuk River, AK, and the Quinn River, NV AN - 1703691787; 2015-076367 AB - The paleo-meanders in the Aeolis Dorsa (AD) region show that meandering channels can develop in the absence of vegetation. Three possible mechanisms other than vegetation could contribute to the bank cohesion required to promote meandering: permafrost, abundant mud, and chemical cementation. Banks at the meandering Quinn River show little vegetation cover. Almost all sediment samples collected from the Quinn River deposits contain at least 41% mud (silt/clay), which is much higher than for most meandering streams. Ion chromatography (IC) analysis and scanning electron microscope (SEM) images showed presence of salts in river waters and sediments which may induce fine sediment to flocculate and be deposited. We find that bank cohesion promoting meandering can be provided by silt/clay, the deposition of which may be induced by dissolved salts. The sinuous Usuktuk River in the continuous permafrost region near Barrow, Alaska exhibited no exposed permafrost on stream banks. Instead vegetation seemed to be the dominant control of bank erosion. We have not found evidence for ice control of bank cohesion in this or other terrestrial rivers of similar size and in meandering pattern to the Martian AD meanders. We conclude that bank cohesion in the AD meanders was probably provided by deposition of fine suspended sediment that was flocculated by dissolved salts. Abstract Copyright (2015) Elsevier, B.V. JF - Geomorphology AU - Matsubara, Yo AU - Howard, Alan D AU - Burr, Devon M AU - Williams, Rebecca M E AU - Dietrich, William E AU - Moore, Jeffery M Y1 - 2015/07/01/ PY - 2015 DA - 2015 Jul 01 SP - 102 EP - 120 PB - Elsevier, Amsterdam VL - 240 SN - 0169-555X, 0169-555X KW - United States KW - shear strength KW - permafrost KW - Mars KW - vegetation KW - Barrow Alaska KW - Quinn River KW - mud KW - river banks KW - sediments KW - geochemistry KW - saline composition KW - Nevada KW - meanders KW - valleys KW - clastic sediments KW - solutes KW - Aeolis Dorsa KW - electron microscopy data KW - rivers KW - Usuktuk River KW - terrestrial planets KW - planets KW - ion chromatograms KW - chromatograms KW - mathematical methods KW - fluvial features KW - petrography KW - terrestrial comparison KW - Alaska KW - SEM data KW - 23:Geomorphology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703691787?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geomorphology&rft.atitle=River+meandering+on+Earth+and+Mars%3B+a+comparative+study+of+Aeolis+Dorsa+meanders%2C+Mars+and+possible+terrestrial+analogs+of+the+Usuktuk+River%2C+AK%2C+and+the+Quinn+River%2C+NV&rft.au=Matsubara%2C+Yo%3BHoward%2C+Alan+D%3BBurr%2C+Devon+M%3BWilliams%2C+Rebecca+M+E%3BDietrich%2C+William+E%3BMoore%2C+Jeffery+M&rft.aulast=Matsubara&rft.aufirst=Yo&rft.date=2015-07-01&rft.volume=240&rft.issue=&rft.spage=102&rft.isbn=&rft.btitle=&rft.title=Geomorphology&rft.issn=0169555X&rft_id=info:doi/10.1016%2Fj.geomorph.2014.08.031 L2 - http://www.sciencedirect.com/science/journal/0169555X LA - English DB - GeoRef N1 - Conference title - 45th annual Binghamton geomorphology symposium N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2015-01-01 N1 - Number of references - 151 N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2015-08-13 N1 - SubjectsTermNotLitGenreText - Aeolis Dorsa; Alaska; Barrow Alaska; chromatograms; clastic sediments; electron microscopy data; fluvial features; geochemistry; ion chromatograms; Mars; mathematical methods; meanders; mud; Nevada; permafrost; petrography; planets; Quinn River; river banks; rivers; saline composition; sediments; SEM data; shear strength; solutes; terrestrial comparison; terrestrial planets; United States; Usuktuk River; valleys; vegetation DO - http://dx.doi.org/10.1016/j.geomorph.2014.08.031 ER - TY - JOUR T1 - Is the electron avalanche process in a Martian dust devil self-quenching? AN - 1703691329; 2015-078793 AB - Viking era laboratory experiments show that mixing tribocharged grains in a low pressure CO (sub 2) gas can form a discharge that glows, indicating the presence of an excited electron population that persists over many seconds. Based on these early experiments, it has been predicted that martian dust devils and storms may also contain a plasma and new plasma chemical species as a result of dust grain tribo-charging. However, recent results from modeling suggest a contrasting result: that a sustained electron discharge may not be easily established since the increase in gas conductivity would act to short-out the local E-fields and quickly dissipate the charged grains driving the process. In essence, the system was thought to be self-quenching (i.e., turn itself off). In this work, we attempt to reconcile the difference between observation and model via new laboratory measurements. We conclude that in a Mars-like low pressure CO (sub 2) atmosphere and expected E-fields, the electron current remains (for the most part) below the expected driving tribo-electric dust currents ( approximately 10 mu A/m (super 2) ), thereby making quenching unlikely. JF - Icarus AU - Farrell, W M AU - McLain, J L AU - Collier, M R AU - Keller, J W AU - Jackson, T J AU - Delory, G T Y1 - 2015/07/01/ PY - 2015 DA - 2015 Jul 01 SP - 333 EP - 337 PB - Elsevier, New York, NY VL - 254 SN - 0019-1035, 0019-1035 KW - experimental studies KW - electrical conductivity KW - pressure KW - atmosphere KW - Mars KW - low pressure KW - dust devils KW - terrestrial planets KW - planets KW - laboratory studies KW - carbon monoxide KW - electrical currents KW - electrons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703691329?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Is+the+electron+avalanche+process+in+a+Martian+dust+devil+self-quenching%3F&rft.au=Farrell%2C+W+M%3BMcLain%2C+J+L%3BCollier%2C+M+R%3BKeller%2C+J+W%3BJackson%2C+T+J%3BDelory%2C+G+T&rft.aulast=Farrell&rft.aufirst=W&rft.date=2015-07-01&rft.volume=254&rft.issue=&rft.spage=333&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.04.003 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 23 N1 - PubXState - NY N1 - Document feature - illus. N1 - Last updated - 2015-08-13 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - atmosphere; carbon monoxide; dust devils; electrical conductivity; electrical currents; electrons; experimental studies; laboratory studies; low pressure; Mars; planets; pressure; terrestrial planets DO - http://dx.doi.org/10.1016/j.icarus.2015.04.003 ER - TY - JOUR T1 - General circulation models of the dynamics of Pluto's volatile transport on the eve of the New Horizons encounter AN - 1703690056; 2015-078791 AB - Pluto's atmospheric dynamics occupy an interesting regime in which the radiative time constant is quite long, the combined effects of high obliquity and a highly eccentric orbit can produce strong seasonal variations in atmospheric pressure, and the strong coupling between the atmosphere and volatile transport on the surface results in atmospheric flows that are quite sensitive to surface and subsurface properties that at present are poorly constrained by direct observations. In anticipation of the New Horizons encounter with the Pluto system in July 2015, we present a Pluto-specific three-dimensional general circulation model (GCM), PlutoWRF, incorporating the most accurate current radiative transfer models of Pluto's atmosphere, a physically robust treatment of nitrogen volatile transport, and the flexibility to accommodate richly detailed information about the surface and subsurface conditions as new data become available. We solve for a physically self-consistent, equilibrated combination of surface, subsurface, and atmospheric conditions to specify the boundary conditions and initial state values for each GCM run. This is accomplished using two reduced versions of PlutoWRF: a two-dimensional surface volatile exchange model to specify the properties of surface nitrogen ice and the initial atmospheric surface pressure, and a one-dimensional radiative-conductive-convective model that uses the two-dimensional model predictions to determine the corresponding global-mean atmospheric thermal profile. We illustrate the capabilities of PlutoWRF in predicting Pluto's general circulation, thermal state, and volatile transport of nitrogen by calculating the dynamical response of Pluto's atmosphere, based on four different idealized models of Pluto's surface ice distribution from Young (Young, L.A. [2013]. Astrophys. J. 766, L22) and Hansen et al. (Hansen, C.J., Paige, D.A., Young, L.A. [2015]. Icarus 246, 183). Our GCM runs typically span 30 years, from 1985 to 2015, covering the period from the discovery of Pluto's atmosphere to present. For most periods simulated, zonal winds are strongly forced by a gradient wind balance, relaxing in later (recent) years to an angular momentum conservation balance of the seasonal polar cap sublimation flow. Near-surface winds generally follow a sublimation flow from the sunlit polar cap to the polar night cap, with a Coriolis turning of the wind as the air travels from pole to pole. We demonstrate the strong contribution of nitrogen sublimation and deposition to Pluto's atmospheric circulation. As New Horizons data become available, PlutoWRF can be used to construct models of Pluto's atmospheric dynamics and surface wind regimes more constrained by physical observations. JF - Icarus AU - Toigo, Anthony D AU - French, Richard G AU - Gierasch, Peter J AU - Guzewich, Scott D AU - Zhu, Xun AU - Richardson, Mark I Y1 - 2015/07/01/ PY - 2015 DA - 2015 Jul 01 SP - 306 EP - 323 PB - Elsevier, New York, NY VL - 254 SN - 0019-1035, 0019-1035 KW - general circulation models KW - angular momentum KW - obliquity of the ecliptic KW - orbits KW - one-dimensional models KW - atmosphere KW - dwarf planets KW - boundary conditions KW - two-dimensional models KW - polar caps KW - nitrogen KW - eccentricity KW - sublimation KW - atmospheric circulation KW - volatiles KW - transport KW - dynamics KW - seasonal variations KW - radiative transfer KW - winds KW - Pluto KW - New Horizons Mission KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703690056?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=General+circulation+models+of+the+dynamics+of+Pluto%27s+volatile+transport+on+the+eve+of+the+New+Horizons+encounter&rft.au=Toigo%2C+Anthony+D%3BFrench%2C+Richard+G%3BGierasch%2C+Peter+J%3BGuzewich%2C+Scott+D%3BZhu%2C+Xun%3BRichardson%2C+Mark+I&rft.aulast=Toigo&rft.aufirst=Anthony&rft.date=2015-07-01&rft.volume=254&rft.issue=&rft.spage=306&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.03.034 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 30 N1 - PubXState - NY N1 - Document feature - illus. N1 - Last updated - 2015-08-13 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - angular momentum; atmosphere; atmospheric circulation; boundary conditions; dwarf planets; dynamics; eccentricity; general circulation models; New Horizons Mission; nitrogen; obliquity of the ecliptic; one-dimensional models; orbits; Pluto; polar caps; radiative transfer; seasonal variations; sublimation; transport; two-dimensional models; volatiles; winds DO - http://dx.doi.org/10.1016/j.icarus.2015.03.034 ER - TY - JOUR T1 - Evolution of the dust and water ice plume components as observed by the LCROSS visible camera and UV-visible spectrometer AN - 1703689800; 2015-078788 AB - The LCROSS (Lunar Crater Observation and Sensing Satellite) impacted the Cabeus crater near the lunar South Pole on 9 October 2009 and created an impact plume that was observed by the LCROSS Shepherding Spacecraft. Here we analyze data from the ultraviolet-visible spectrometer and visible context camera aboard the spacecraft. We use these data to constrain a numerical model to understand the physical evolution of the resultant plume. The UV-visible light curve peaks in brightness 18 s after impact and then decreases in radiance but never returns to the pre-impact radiance value for the approximately 4 min of observation by the Shepherding Spacecraft. The blue:red spectral ratio increases in the first 10 s, decreases over the following 50 s, remains constant for approximately 150 s, and then begins to increase again approximately 180 s after impact. Constraining the modeling results with spacecraft observations, we conclude that lofted dust grains remained suspended above the lunar surface for the entire 250 s of observation after impact. The impact plume was composed of both a high angle spike and low angle plume component. Numerical modeling is used to evaluate the relative effects of various plume parameters to further constrain the plume properties when compared with the observational data. Dust particle sizes lofted above the lunar surface were micron to sub-micron in size. Water ice particles were also contained within the ejecta cloud and simultaneously photo-dissociated and sublimated after reaching sunlight. JF - Icarus AU - Heldmann, Jennifer L AU - Lamb, Justin AU - Asturias, Daniel AU - Colaprete, Anthony AU - Goldstein, David B AU - Trafton, Laurence M AU - Varghese, Philip L Y1 - 2015/07/01/ PY - 2015 DA - 2015 Jul 01 SP - 262 EP - 275 PB - Elsevier, New York, NY VL - 254 SN - 0019-1035, 0019-1035 KW - water KW - Lunar Crater Observation and Sensing Satellite KW - polar regions KW - plumes KW - numerical models KW - Moon KW - clastic sediments KW - Cabeus Crater KW - optical spectra KW - grain size KW - impacts KW - ejecta KW - LCROSS Mission KW - sublimation KW - ice KW - dust KW - sediments KW - ultraviolet spectra KW - spectra KW - regolith KW - cameras KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703689800?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Evolution+of+the+dust+and+water+ice+plume+components+as+observed+by+the+LCROSS+visible+camera+and+UV-visible+spectrometer&rft.au=Heldmann%2C+Jennifer+L%3BLamb%2C+Justin%3BAsturias%2C+Daniel%3BColaprete%2C+Anthony%3BGoldstein%2C+David+B%3BTrafton%2C+Laurence+M%3BVarghese%2C+Philip+L&rft.aulast=Heldmann&rft.aufirst=Jennifer&rft.date=2015-07-01&rft.volume=254&rft.issue=&rft.spage=262&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.02.026 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - PubXState - NY N1 - Last updated - 2015-08-13 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - Cabeus Crater; cameras; clastic sediments; dust; ejecta; grain size; ice; impacts; LCROSS Mission; Lunar Crater Observation and Sensing Satellite; Moon; numerical models; optical spectra; plumes; polar regions; regolith; sediments; spectra; sublimation; ultraviolet spectra; water DO - http://dx.doi.org/10.1016/j.icarus.2015.02.026 ER - TY - JOUR T1 - An Intercomparison of the Spatiotemporal Variability of Satellite- and Ground-Based Cloud Datasets Using Spectral Analysis Techniques AN - 1701497470; PQ0001794040 AB - Because of the importance of clouds in modulating Earth's energy budget, it is critical to understand their variability in space and time for climate and modeling studies. This study examines the consistency of the spatiotemporal variability of cloud amount (CA) and cloud-top pressure (CTP) represented by five 7-yr satellite datasets from the Global Energy and Water Cycle Experiment (GEWEX) cloud assessment project, and total cloud fraction observation from the Extended Edited Cloud Reports Archive (EECRA). Two spectral analysis techniques, namely combined maximum covariance analysis (CMCA) and combined principal component analysis (CPCA), are used to extract the dominant modes of variability from the combined datasets, and the resulting spatial patterns are compared in parallel. The results indicate that the datasets achieve overall excellent agreement on both seasonal and interannual scales of variability, with the correlations between the spatial patterns mostly above 0.6 and often above 0.8. For seasonal variability, the largest differences are found in the Northern Hemisphere high latitudes and near the South African coast for CA and in the Sahel region for CTP, where some differences in the phase and strength of the seasonal cycle are found. On interannual scales, global cloud variability is mostly associated with major climate modes, including El Nino-Southern Oscillation (ENSO), the Pacific decadal oscillation (PDO), and the Indian Ocean dipole mode (IODM), and the datasets also agree reasonably well. The good agreement across the datasets supports the conclusion that they are describing cloud variations with these climate modes. JF - Journal of Climate AU - Li, Jing AU - Carlson, Barbara E AU - Rossow, William B AU - Lacis, Andrew A AU - Zhang, Yuanchong AD - NASA Goddard Institute for Space Studies, and Department of Applied Physics and Applied Math, Columbia University, New York, New York Y1 - 2015/07// PY - 2015 DA - July 2015 SP - 5716 EP - 5736 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 28 IS - 14 SN - 0894-8755, 0894-8755 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Clouds KW - Cloud retrieval KW - Principal components analysis KW - Spectral analysis/models/distribution KW - Interannual variability KW - Seasonal variability KW - Variability KW - Spectral Analysis KW - Principal Component Analysis KW - Climate change KW - Correlations KW - Cloud variations KW - Africa, West, Sahel Region KW - Hydrologic Cycle KW - Assessments KW - Cloud amount KW - I, Pacific KW - Ocean-atmosphere system KW - Archives KW - Seasonal variations KW - Coasts KW - Marine KW - ISW, Indian Ocean KW - Principal component analysis KW - Climate models KW - Climates KW - Spectral analysis KW - Pacific Decadal Oscillation KW - Hydrologic cycle KW - Energy budget KW - Southern Oscillation KW - Satellite data KW - Water cycle KW - Oceans KW - Latitudinal variations KW - El Nino-Southern Oscillation event KW - Q2 09393:Remote geosensing KW - SW 0810:General KW - M2 551.588:Environmental Influences (551.588) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1701497470?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Climate&rft.atitle=An+Intercomparison+of+the+Spatiotemporal+Variability+of+Satellite-+and+Ground-Based+Cloud+Datasets+Using+Spectral+Analysis+Techniques&rft.au=Li%2C+Jing%3BCarlson%2C+Barbara+E%3BRossow%2C+William+B%3BLacis%2C+Andrew+A%3BZhang%2C+Yuanchong&rft.aulast=Li&rft.aufirst=Jing&rft.date=2015-07-01&rft.volume=28&rft.issue=14&rft.spage=5716&rft.isbn=&rft.btitle=&rft.title=Journal+of+Climate&rft.issn=08948755&rft_id=info:doi/10.1175%2FJCLI-D-14-00537.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Number of references - 41 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Latitudinal variations; Climate change; Spectral analysis; Ocean-atmosphere system; Archives; Hydrologic cycle; Seasonal variations; Energy budget; Southern Oscillation; Principal component analysis; Climate models; Correlations; Cloud variations; Pacific Decadal Oscillation; Clouds; Interannual variability; Satellite data; Water cycle; Cloud amount; El Nino-Southern Oscillation event; Seasonal variability; Hydrologic Cycle; Variability; Assessments; Oceans; Spectral Analysis; Principal Component Analysis; Climates; Coasts; ISW, Indian Ocean; Africa, West, Sahel Region; I, Pacific; Marine DO - http://dx.doi.org/10.1175/JCLI-D-14-00537.1 ER - TY - JOUR T1 - Using a pattern metric-based analysis to examine the success of forest policy implementation in Southwest China AN - 1701486723; PQ0001807669 AB - Context: The National Forest Protection Program (NFPP) and sloping land conversion program (SLCP) were introduced in 1998 and 2000, respectively, with the shared goal of increasing forest cover and decreasing forest loss across China. The NFPP banned commercial logging and funded tree planting efforts while the SLCP subsidized tree planting on steeply sloping and otherwise disused lands. Objective: This study quantifies the patterns of forest loss and gain before and during policy implementation to gauge implementation effectiveness. By measuring patterns associated with spatially explicit processes linking land managers and forest resources, this study improves upon overly simplified assessments of implementation effectiveness that only consider the area of forest cover change. Methods: The shifting patterns of short- and long-term forest cover change in Diqing Prefecture, southwest China, are measured between 1990 and 2009. Eleven pattern metrics quantify the area, topography, and landscape feature proximity of forest loss or gain patches based on Landsat imagery-derived forest cover changes. Results: Trends generally conformed to those expected under successful policy implementation: the proportion and fragmentation of forest loss declined, loss patches were found closer to villages and at lower elevations, and forest gain increased in proportion and median patch area. However, median loss patch area increased, suggesting greater localized harvesting intensity, and loss sites occupied steeper slopes contrary to SLCP goals. Conclusions: Forest cover change patterns did not wholly align with those expected of successful implementation but rather deviated due to the influences of regional tourism development and village- and household-level forest resource scarcity. JF - Landscape Ecology AU - Van Den Hoek, Jamon AU - Burnicki, Amy C AU - Ozdogan, Mutlu AU - Zhu, A-Xing AD - Department of Geography, University of Wisconsin, 550 N. Park St., Madison, WI, 53706, USA, jamon.vandenhoek@nasa.gov Y1 - 2015/07// PY - 2015 DA - July 2015 SP - 1111 EP - 1127 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 30 IS - 6 SN - 0921-2973, 0921-2973 KW - Ecology Abstracts; Sustainability Science Abstracts KW - Tourism KW - Trees KW - Landscape KW - Forests KW - Habitat fragmentation KW - Logging KW - Landsat KW - Tourism development KW - Villages KW - Planting KW - Scarcity KW - China, People's Rep. KW - Harvesting KW - National forests KW - Forest resources KW - Topography KW - M3 1010:Issues in Sustainable Development KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1701486723?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Landscape+Ecology&rft.atitle=Using+a+pattern+metric-based+analysis+to+examine+the+success+of+forest+policy+implementation+in+Southwest+China&rft.au=Van+Den+Hoek%2C+Jamon%3BBurnicki%2C+Amy+C%3BOzdogan%2C+Mutlu%3BZhu%2C+A-Xing&rft.aulast=Van+Den+Hoek&rft.aufirst=Jamon&rft.date=2015-07-01&rft.volume=30&rft.issue=6&rft.spage=1111&rft.isbn=&rft.btitle=&rft.title=Landscape+Ecology&rft.issn=09212973&rft_id=info:doi/10.1007%2Fs10980-015-0171-y LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Number of references - 86 N1 - Last updated - 2016-08-03 N1 - SubjectsTermNotLitGenreText - Tourism; Logging; Landsat; Trees; Planting; Landscape; Habitat fragmentation; Harvesting; Topography; Forests; Villages; Tourism development; Scarcity; Forest resources; National forests; China, People's Rep. DO - http://dx.doi.org/10.1007/s10980-015-0171-y ER - TY - JOUR T1 - Quantifying the Land-Atmosphere Coupling Behavior in Modern Reanalysis Products over the U.S. Southern Great Plains AN - 1701481837; PQ0001794046 AB - The coupling of the land with the planetary boundary layer (PBL) on diurnal time scales is critical to regulating the strength of the connection between soil moisture and precipitation. To improve understanding of land-atmosphere (L-A) interactions, recent studies have focused on the development of diagnostics to quantify the strength and accuracy of the land-PBL coupling at the process level. In this paper, the authors apply a suite of local land-atmosphere coupling (LoCo) metrics to modern reanalysis (RA) products and observations during a 17-yr period over the U.S. southern Great Plains. Specifically, a range of diagnostics exploring the links between soil moisture, evaporation, PBL height, temperature, humidity, and precipitation is applied to the summertime monthly mean diurnal cycles of the North American Regional Reanalysis (NARR), Modern-Era Retrospective Analysis for Research and Applications (MERRA), and Climate Forecast System Reanalysis (CFSR). Results show that CFSR is the driest and MERRA the wettest of the three RAs in terms of overall surface-PBL coupling. When compared against observations, CFSR has a significant dry bias that impacts all components of the land-PBL system. CFSR and NARR are more similar in terms of PBL dynamics and response to dry and wet extremes, while MERRA is more constrained in terms of evaporation and PBL variability. Each RA has a unique land-PBL coupling that has implications for downstream impacts on the diurnal cycle of PBL evolution, clouds, convection, and precipitation as well as representation of extremes and drought. As a result, caution should be used when treating RAs as truth in terms of their water and energy cycle processes. JF - Journal of Climate AU - Santanello, Joseph A, Jr AU - Roundy, Joshua AU - Dirmeyer, Paul A AD - Hydrological Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland Y1 - 2015/07// PY - 2015 DA - July 2015 SP - 5813 EP - 5829 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 28 IS - 14 SN - 0894-8755, 0894-8755 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Boundary layer KW - Drought KW - Atmosphere-land interaction KW - Hydrometeorology KW - Reanalysis data KW - Interannual variability KW - Convection KW - Evaporation KW - Convection development KW - Soil Water KW - Data reanalysis KW - Soils KW - Downstream KW - Climatology KW - Atmospheric boundary layer KW - Droughts KW - Diurnal precipitation variations KW - North America KW - Soil moisture evaporation KW - Climates KW - Humidity KW - Monthly mean diurnal cycles KW - Precipitation KW - RAS KW - Clouds KW - Strength KW - USA, Great Plains KW - Boundary layers KW - Moisture Content KW - Land-atmosphere interaction KW - Soil moisture KW - Evolution KW - Future climates KW - SW 0810:General KW - Q2 09402:Freshwater from the sea KW - M2 556.13:Evaporation/Evapotranspiration (556.13) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1701481837?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Climate&rft.atitle=Quantifying+the+Land-Atmosphere+Coupling+Behavior+in+Modern+Reanalysis+Products+over+the+U.S.+Southern+Great+Plains&rft.au=Santanello%2C+Joseph+A%2C+Jr%3BRoundy%2C+Joshua%3BDirmeyer%2C+Paul+A&rft.aulast=Santanello&rft.aufirst=Joseph&rft.date=2015-07-01&rft.volume=28&rft.issue=14&rft.spage=5813&rft.isbn=&rft.btitle=&rft.title=Journal+of+Climate&rft.issn=08948755&rft_id=info:doi/10.1175%2FJCLI-D-14-00680.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Number of references - 52 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Convection; Boundary layers; Soils; Humidity; Droughts; RAS; Soil moisture evaporation; Evaporation; Convection development; Monthly mean diurnal cycles; Precipitation; Data reanalysis; Clouds; Climatology; Atmospheric boundary layer; Soil moisture; Land-atmosphere interaction; Diurnal precipitation variations; Future climates; Strength; Climates; Downstream; Moisture Content; Soil Water; Evolution; North America; USA, Great Plains DO - http://dx.doi.org/10.1175/JCLI-D-14-00680.1 ER - TY - JOUR T1 - Improved Low-Cloud Simulation from the Community Atmosphere Model with an Advanced Third-Order Turbulence Closure AN - 1701481714; PQ0001794049 AB - In this study, a simplified intermediately prognostic higher-order turbulence closure (IPHOC) is implemented in the Community Atmosphere Model, version 5 (CAM5), to provide a consistent treatment of subgrid-scale cloud processes, except for deep convection. The planetary boundary layer (PBL) height is prognosticated to better resolve the discontinuity of temperature and moisture above the PBL top. Single-column model tests show that fluxes of liquid water potential temperature and total water, cloud fraction, and liquid water content are improved with this approach. The simplified IPHOC package replaces the boundary layer dry and moist turbulence parameterizations, the shallow convection parameterization, and the liquid-phase part of the cloud macrophysics parameterization in CAM5. CAM5-IPHOC improves the simulation of the low-level clouds off the west coasts of continents and the storm track region in the Southern Hemisphere (SH). The transition from stratocumulus to cumulus clouds is more gradual. There are also improvements on the cloud radiative forcing, especially shortwave, in the subsidence regime. The improvements in the relationships among low cloud amount, surface relative humidity, lower tropospheric stability, and PBL depth are seen in some stratocumulus regions. CAM5-IPHOC, however, produces weaker precipitation at the South Pacific convergence zone than CAM5 because of less energy flux into the SH atmosphere. The more downward surface shortwave radiative cooling and the less top-of-the-atmosphere longwave cloud radiative heating in the SH relative to the Northern Hemisphere explains the anomalous cooling and the lesser energy flux into the SH, which is related to the underestimate of extratropical middle/high clouds in the SH. JF - Journal of Climate AU - Cheng, Anning AU - Xu, Kuan-Man AD - Science Systems and Applications, Inc., and Climate Science Branch, NASA Langley Research Center, Hampton, Virginia Y1 - 2015/07// PY - 2015 DA - July 2015 SP - 5737 EP - 5762 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 28 IS - 14 SN - 0894-8755, 0894-8755 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Atmospheric circulation KW - Cloud cover KW - Climate models KW - Cloud resolving models KW - Model evaluation/performance KW - Convergence zones KW - Convection KW - Relative humidity KW - Energy flux KW - Boundary Layers KW - Convection development KW - turbulence KW - Atmosphere KW - Storms KW - Radiative forcing KW - Radiative heating KW - Atmospheric boundary layer KW - Turbulence KW - Turbulent boundary layer KW - Cumulus clouds KW - Temperature KW - ISEW, South Pacific, South Pacific Convergence Zone KW - Precipitation KW - Cooling KW - Model Studies KW - Clouds KW - Storm tracks KW - Numerical simulations KW - Potential temperature KW - Energy transfer KW - Boundary layers KW - Atmospheric forcing KW - Fluctuations KW - Q2 09242:Observations and measurements at sea KW - SW 0810:General KW - M2 551.58:Climatology (551.58) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1701481714?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Climate&rft.atitle=Improved+Low-Cloud+Simulation+from+the+Community+Atmosphere+Model+with+an+Advanced+Third-Order+Turbulence+Closure&rft.au=Cheng%2C+Anning%3BXu%2C+Kuan-Man&rft.aulast=Cheng&rft.aufirst=Anning&rft.date=2015-07-01&rft.volume=28&rft.issue=14&rft.spage=5737&rft.isbn=&rft.btitle=&rft.title=Journal+of+Climate&rft.issn=08948755&rft_id=info:doi/10.1175%2FJCLI-D-14-00776.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Number of references - 67 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Relative humidity; Clouds; Convection; Boundary layers; Energy transfer; Atmospheric forcing; Storms; Turbulent boundary layer; Turbulence; Convergence zones; Climate models; Energy flux; Convection development; Precipitation; Storm tracks; Radiative forcing; Numerical simulations; Potential temperature; Atmospheric boundary layer; Radiative heating; Cumulus clouds; Boundary Layers; Temperature; turbulence; Fluctuations; Cooling; Atmosphere; Model Studies; ISEW, South Pacific, South Pacific Convergence Zone DO - http://dx.doi.org/10.1175/JCLI-D-14-00776.1 ER - TY - JOUR T1 - A Trust-Powered Technique to Facilitate Scientific Tool Discovery and Recommendation AN - 1698867967 AB - While the open science community engenders many similar scientific tools as services, how to differentiate them and help scientists select and reuse existing software services developed by peers remains a challenge. Most of the existing service discovery approaches focus on finding candidate services based on functional and non-functional requirements as well as historical usage analysis. Complementary to the existing methods, this paper proposes to leverage human trust to facilitate software service selection and recommendation. A trust model is presented that leverages the implicit human factor to help quantify the trustworthiness of candidate services. A hierarchical Knowledge-Social-Trust (KST) network model is established to extract hidden knowledge from various publication repositories (e.g., DBLP) and social networks (e.g., Twitter and DBLP). As a proof of concept, a prototyping service has been developed to help scientists evaluate and visualize trust of services. The performance factor is studied and experience is reported. JF - International Journal of Web Services Research AU - Zhang, Jia AU - Lee, Chris AU - Votava, Petr AU - Lee, Tsengdar J AU - Wang, Shuai AU - Sriram, Venkatesh AU - Saini, Neeraj AU - Rao, Pujita AU - Nemani, Ramakrishna AD - Carnegie Mellon University, Silicon Valley, CA, USA ; NASA Ames Research Center, Silicon Valley, USA & Science Mission Directorate, NASA Headquarters, Washington, D.C., USA ; Science Mission Directorate, NASA Headquarters, Washington, D.C., USA ; NASA Ames Research Center, Silicon Valley, CA, USA ; Carnegie Mellon University, Silicon Valley, CA, USA Y1 - 2015/07// PY - 2015 DA - Jul 2015 SP - 25 EP - 47 CY - Hershey PB - IGI Global VL - 12 IS - 3 SN - 1545-7362 KW - Computers KW - Knowledge-Social-Trust (KST) Network Model KW - Scientific Workflows KW - Social Networks KW - Trust-based Recommendation KW - Workflow Recommendation KW - Social networks KW - Trust KW - 13.11:INFORMATION STORAGE AND RETRIEVAL - NETWORKS UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1698867967?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Alisa&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=International+Journal+of+Web+Services+Research&rft.atitle=A+Trust-Powered+Technique+to+Facilitate+Scientific+Tool+Discovery+and+Recommendation&rft.au=Zhang%2C+Jia%3BLee%2C+Chris%3BVotava%2C+Petr%3BLee%2C+Tsengdar+J%3BWang%2C+Shuai%3BSriram%2C+Venkatesh%3BSaini%2C+Neeraj%3BRao%2C+Pujita%3BNemani%2C+Ramakrishna&rft.aulast=Zhang&rft.aufirst=Jia&rft.date=2015-07-01&rft.volume=12&rft.issue=3&rft.spage=25&rft.isbn=&rft.btitle=&rft.title=International+Journal+of+Web+Services+Research&rft.issn=15457362&rft_id=info:doi/10.4018%2FIJWSR.2015070102 LA - English DB - Library & Information Science Abstracts (LISA) N1 - Name - Twitter Inc N1 - Date revised - 2015-09-22 N1 - Last updated - 2016-08-16 DO - http://dx.doi.org/10.4018/IJWSR.2015070102 ER - TY - JOUR T1 - Defining the Biological Effectiveness of Components of High-LET Track Structure. AN - 1697210715; 26114329 AB - During space travel, astronauts are exposed to a wide array of high-linear energy transfer (LET) particles, with differing energies and resulting biological effects. Risk assessment of these exposures carries a large uncertainty predominantly due to the unique track structure of the particle's energy deposition. The complex damage elicited by high charge and energy (HZE) particles results from both lesions along the track core and from energetic electrons, δ rays, generated as a consequence of particle traversal. To better define how cells respond to this complex radiation exposure, a normal hTERT immortalized skin fibroblast cell line was exposed to a defined panel of particles carefully chosen to tease out track structure effects. Phosphorylation kinetics for several key double-strand break (DSB) response proteins (γ-H2AX, pATF2 and pSMC1) were defined after exposure to ten different high-LET radiation qualities and one low-LET radiation (X ray), at two doses (0.5-2 Gy) and time points (2 and 24 h). The results reveal that the lower energy particles (Fe 300, Si 93 and Ti 300 MeV/u), with a narrower track width and higher number and intensity of δ rays, cause the highest degree of persistent damage response. The persistent γ-H2AX signal at lower energies suggests that damage from these exposures are more difficult to resolve, likely due to the greater complexity of the associated DNA lesions. However, different kinetics were observed for the solely ATM-mediated phosphorylations (pATF2 and pSMC1), revealing a shallow induction at early times and a higher level of residual phosphorylation compared to γ-H2AX. The differing phospho-protein profiles exhibited, compared to γ-H2AX, suggests additional functions for these proteins within the cell. The strong correspondence between the predicted curves for energy deposition per nucleosome for each ion/energy combination and the persistent levels of γ-H2AX indicates that the nature of energy distribution defines residual levels of γ-H2AX, an indicator of unrepaired DSBs. Our results suggest that decreasing the energy of a particle results in more complex damage that may increase genomic instability and increase the risk of carcinogenesis. JF - Radiation research AU - Sridharan, Deepa M AU - Chappell, Lori J AU - Whalen, Mary K AU - Cucinotta, Francis A AU - Pluth, Janice M AD - a  Lawrence Berkeley National Laboratory, Life Sciences Division, Berkeley, California 94710; ; b  NASA, Lyndon B. Johnson Space Center, Houston, Texas 77058; and. ; c  University of Nevada, Las Vegas, Health Physics and Diagnostic Sciences, Las Vegas, Nevada 89154. Y1 - 2015/07// PY - 2015 DA - July 2015 SP - 105 EP - 119 VL - 184 IS - 1 KW - ATF2 protein, human KW - 0 KW - Activating Transcription Factor 2 KW - H2AFX protein, human KW - Histones KW - Nucleosomes KW - ATM protein, human KW - EC 2.7.11.1 KW - Ataxia Telangiectasia Mutated Proteins KW - Index Medicus KW - Space life sciences KW - Nucleosomes -- radiation effects KW - DNA Damage KW - Cells, Cultured KW - Humans KW - Ataxia Telangiectasia Mutated Proteins -- physiology KW - Fibroblasts -- radiation effects KW - Histones -- analysis KW - Cell Cycle -- radiation effects KW - Activating Transcription Factor 2 -- analysis KW - Linear Energy Transfer KW - Cosmic Radiation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1697210715?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Radiation+research&rft.atitle=Defining+the+Biological+Effectiveness+of+Components+of+High-LET+Track+Structure.&rft.au=Sridharan%2C+Deepa+M%3BChappell%2C+Lori+J%3BWhalen%2C+Mary+K%3BCucinotta%2C+Francis+A%3BPluth%2C+Janice+M&rft.aulast=Sridharan&rft.aufirst=Deepa&rft.date=2015-07-01&rft.volume=184&rft.issue=1&rft.spage=105&rft.isbn=&rft.btitle=&rft.title=Radiation+research&rft.issn=1938-5404&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-09-30 N1 - Date created - 2015-07-16 N1 - Date revised - 2017-01-14 N1 - Last updated - 2017-01-19 ER - TY - JOUR T1 - Evaluation of a model-based ground water drought indicator in the conterminous U. S. AN - 1696876841; 2015-067891 AB - Monitoring groundwater drought using land surface models is a valuable alternative given the current lack of systematic in situ measurements at continental and global scales and the low resolution of current remote sensing based groundwater data. However, uncertainties inherent to land surface models may impede drought detection, and thus should be assessed using independent data sources. In this study, we evaluated a groundwater drought index (GWI) derived from monthly groundwater storage output from the Catchment Land Surface Model (CLSM) using a GWI similarly derived from in situ groundwater observations. Groundwater observations were obtained from unconfined or semi-confined aquifers in eight regions of the central and northeastern U.S. Regional average GWI derived from CLSM exhibited strong correlation with that from observation wells, with correlation coefficients between 0.43 and 0.92. GWI from both in situ data and CLSM was generally better correlated with the Standard Precipitation Index (SPI) at 12 and 24 month timescales than at shorter timescales, but it varied depending on climate conditions. The correlation between CLSM derived GWI and SPI generally decreases with increasing depth to the water table, which in turn depends on both bedrock depth (a CLSM parameter) and mean annual precipitation. The persistence of CLSM derived GWI is spatially varied and again shows a strong influence of depth to groundwater. CLSM derived GWI generally persists longer than GWI derived from in situ data, due at least in part to the inability of coarse model inputs to capture high frequency meteorological variability at local scales. The study also showed that groundwater can have a significant impact on soil moisture persistence where the water table is shallow. Soil moisture persistence was estimated to be longer in the eastern U.S. than in the west, in contrast to previous findings that were based on models that did not represent groundwater. Assimilation of terrestrial water storage data from the Gravity Recovery and Climate Experiment (GRACE) satellite mission improved the correlation between CLSM based regional average GWI and that based on in situ data in six of the eight regions. Practical issues regarding the application of GRACE assimilated groundwater storage for drought detection are discussed. An important conclusion of this study is that model parameters that control the depth to the water table, including bedrock depth, strongly influence the evolution and persistence of simulated groundwater and require careful configuration for drought monitoring. Abstract Copyright (2015) Elsevier, B.V. JF - Journal of Hydrology AU - Li, Bailing AU - Rodell, Matthew Y1 - 2015/07// PY - 2015 DA - July 2015 SP - 78 EP - 88 PB - Elsevier, Amsterdam VL - 526 SN - 0022-1694, 0022-1694 KW - United States KW - soils KW - bedrock KW - monitoring KW - Catchment Land Surface model KW - ground water drought index KW - moisture KW - standardized precipitation index KW - GRACE KW - indicators KW - satellite methods KW - depth KW - ground water KW - drought KW - models KW - water table KW - regional KW - mathematical methods KW - water resources KW - CLM model KW - remote sensing KW - 21:Hydrogeology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696876841?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydrology&rft.atitle=Evaluation+of+a+model-based+ground+water+drought+indicator+in+the+conterminous+U.+S.&rft.au=Li%2C+Bailing%3BRodell%2C+Matthew&rft.aulast=Li&rft.aufirst=Bailing&rft.date=2015-07-01&rft.volume=526&rft.issue=&rft.spage=78&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology&rft.issn=00221694&rft_id=info:doi/10.1016%2Fj.jhydrol.2014.09.027 L2 - http://www.sciencedirect.com/science/journal/00221694 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2015-01-01 N1 - Number of references - 36 N1 - Document feature - illus. incl. 3 tables, sketch maps N1 - Last updated - 2015-11-19 N1 - CODEN - JHYDA7 N1 - SubjectsTermNotLitGenreText - bedrock; Catchment Land Surface model; CLM model; depth; drought; GRACE; ground water; ground water drought index; indicators; mathematical methods; models; moisture; monitoring; regional; remote sensing; satellite methods; soils; standardized precipitation index; United States; water resources; water table DO - http://dx.doi.org/10.1016/j.jhydrol.2014.09.027 ER - TY - CPAPER T1 - An Overview of NASA Health and Air Quality Applications T2 - 108th Air and Waste Management Association Annual Conference AN - 1697992613; 6353234 JF - 108th Air and Waste Management Association Annual Conference AU - Haynes, John AU - Omar, Ali AU - Estes, Sue Y1 - 2015/06/22/ PY - 2015 DA - 2015 Jun 22 KW - Reviews KW - Air quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1697992613?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=108th+Air+and+Waste+Management+Association+Annual+Conference&rft.atitle=An+Overview+of+NASA+Health+and+Air+Quality+Applications&rft.au=Haynes%2C+John%3BOmar%2C+Ali%3BEstes%2C+Sue&rft.aulast=Haynes&rft.aufirst=John&rft.date=2015-06-22&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=108th+Air+and+Waste+Management+Association+Annual+Conference&rft.issn=&rft_id=info:doi/ L2 - http://ace2015.awma.org/wp-content/uploads/2015/05/01-7294-2015-ACE-Final-Program.pdf LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-06-30 N1 - Last updated - 2015-07-23 ER - TY - NEWS T1 - Amazing Sunset Sky Show AN - 1690252564 JF - UPI Space Daily AU - Dr. Tony Phillips for NASA Science News Y1 - 2015/06/22/ PY - 2015 DA - 2015 Jun 22 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1690252564?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=Amazing+Sunset+Sky+Show&rft.au=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2015-06-22&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-06-22 ER - TY - CPAPER T1 - Early Tsunami Detection Directly from GNSS T2 - 25th International Ocean and Polar Engineering Conference (ISOPE 2015) AN - 1676334730; 6342560 JF - 25th International Ocean and Polar Engineering Conference (ISOPE 2015) AU - Song, Tony Y1 - 2015/06/21/ PY - 2015 DA - 2015 Jun 21 KW - Tsunamis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1676334730?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=25th+International+Ocean+and+Polar+Engineering+Conference+%28ISOPE+2015%29&rft.atitle=Early+Tsunami+Detection+Directly+from+GNSS&rft.au=Song%2C+Tony&rft.aulast=Song&rft.aufirst=Tony&rft.date=2015-06-21&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=25th+International+Ocean+and+Polar+Engineering+Conference+%28ISOPE+2015%29&rft.issn=&rft_id=info:doi/ L2 - http://www.isope.org/conferences/2015/Pap-2015%20Kona-Key-Sess%20Order-No%20Paper%20no.-0227-Prog-yj.pdf LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-04-30 N1 - Last updated - 2015-04-29 ER - TY - JOUR T1 - Capture and evolution of planetesimals in circumjovian disks AN - 1832596636; 757440-56 AB - We study the evolution of planetesimals in evolved gaseous disks that orbit a solar-mass star and harbor a Jupiter-mass planet at (sub IMG .../ (super AU. The gas dynamics are modeled with a three-dimensional hydrodynamics code that employs nested grids and achieves a resolution of one Jupiter radius in the circumplanetary disk. The code models solids as individual particles. Planetesimals are subjected to gravitational forces by the star and the planet, a drag force by the gas, disruption via ram pressure, and mass loss through ablation. The mass evolution of solids is calculated self-consistently with their temperature, velocity, and position. We consider icy and icy/rocky bodies of radius 0.1�100 km, initially deployed on orbits around the star within a few Hill radii (R (sub H) ) of the planet's orbit. Planetesimals are scattered inward, outward, and toward disk regions of radius (sub IMG .../ (super . Scattering can relocate significant amounts of solids, provided that regions (sub IMG .../ (super R (sub H) are replenished with planetesimals. Scattered bodies can be temporarily captured on planetocentric orbits. Ablation consumes nearly all solids at gas temperatures (sub IMG .../ (super K. Super-Keplerian rotation around and beyond the outer edge of the gas gap can segregate (sub IMG .../ (super bodies, producing solid gap edges at size-dependent radial locations. Capture, break-up, and ablation of solids result in a dust-laden circumplanetary disk with low surface densities of kilometer sized planetesimals, implying relatively long timescales for satellite formation. After a giant planet acquires most of its mass, accretion of solids is unlikely to significantly alter its heavy element content. The luminosity generated by accretion of solids and the contraction luminosity can be of similar orders of magnitude. Copyright (Copyright) 2015. The American Astronomical Society. All rights reserved. JF - The Astrophysical Journal AU - D'Angelo, Gennaro AU - Podolak, Morris Y1 - 2015/06/20/ PY - 2015 DA - 2015 Jun 20 EP - Paper no. 203 PB - IOP Publishing for American Astronomical Society, Bristol VL - 806 IS - 2 SN - 0004-637X, 0004-637X KW - accretion KW - ablation KW - numerical models KW - extrasolar planets KW - three-dimensional models KW - orbits KW - planetesimals KW - protoplanetary disk KW - temperature KW - giant planets KW - gases KW - mass KW - planets KW - dynamics KW - velocity KW - planetology KW - hydrodynamics KW - circumplanetary disks KW - thermodynamic properties KW - luminosity KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832596636?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Astrophysical+Journal&rft.atitle=Capture+and+evolution+of+planetesimals+in+circumjovian+disks&rft.au=D%27Angelo%2C+Gennaro%3BPodolak%2C+Morris&rft.aulast=D%27Angelo&rft.aufirst=Gennaro&rft.date=2015-06-20&rft.volume=806&rft.issue=2&rft.spage=&rft.isbn=&rft.btitle=&rft.title=The+Astrophysical+Journal&rft.issn=0004637X&rft_id=info:doi/10.1088%2F0004-637X%2F806%2F2%2F203 L2 - http://iopscience.iop.org/0004-637X LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data supplied by IOP Publishing Ltd., London, United Kingdom N1 - Number of references - 122 N1 - Document feature - illus. incl. 5 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - ablation; accretion; circumplanetary disks; dynamics; extrasolar planets; gases; giant planets; hydrodynamics; luminosity; mass; numerical models; orbits; planetesimals; planetology; planets; protoplanetary disk; temperature; thermodynamic properties; three-dimensional models; velocity DO - http://dx.doi.org/10.1088/0004-637X/806/2/203 ER - TY - JOUR T1 - Impact of snow darkening via dust, black carbon, and organic carbon on boreal spring climate in the Earth system AN - 1718050053; 2015-096304 AB - Dust, black carbon (BC), and organic carbon (OC) aerosols, when deposited onto snow, are known to reduce the albedo of the snow (i.e., snow darkening effect (SDE)). Here using the NASA Goddard Earth Observing System Model, Version 5 (GEOS-5) with aerosol tracers and a state-of-the-art snow darkening module (GOddard SnoW Impurity Module: GOSWIM) for the land surface, we examine the role of SDE on climate in the boreal spring snowmelt season. SDE is found to produce significant surface warming (over 15 W m (super -2) ) over broad areas in midlatitudes, with dust being the most important contributor to the warming in central Asia and the western Himalayas and with BC having larger impact in the Europe, eastern Himalayas, East Asia, and North America. The contribution of OC to the warming is generally low but still significant mainly over southeastern Siberia, northeastern East Asia, and western Canada ( approximately 19% of the total solar visible absorption by these snow impurities). The simulations suggest that SDE strengthens the boreal spring water cycle in East Asia through water recycling and moisture advection from the ocean and contributes to the maintenance of dry conditions in parts of a region spanning Europe to central Asia, partially through feedback on the model's background climatology. Overall, our study suggests that the existence of SDE in the Earth system associated with dust, BC, and OC contributes significantly to enhanced surface warming over continents in northern hemisphere midlatitudes during boreal spring, raising the surface skin temperature by approximately 3-6 K near the snowline. Abstract Copyright (2015), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Atmospheres AU - Yasunari, Teppei J AU - Koster, Randal D AU - Lau, William K M AU - Kim, Kyu-Myong Y1 - 2015/06/16/ PY - 2015 DA - 2015 Jun 16 SP - 5485 EP - 5503 PB - Blackwell Wiley for American Geophysical Union, Washington, DC VL - 120 IS - 11 SN - 2169-897X, 2169-897X KW - snowmelt KW - clastic sediments KW - global KW - pollution KW - environmental effects KW - climate change KW - transport KW - deposition KW - atmospheric transport KW - carbon KW - snow KW - dust KW - sediments KW - climate effects KW - aerosols KW - seasonal variations KW - organic carbon KW - chemical composition KW - meteorology KW - meltwater KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1718050053?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=Impact+of+snow+darkening+via+dust%2C+black+carbon%2C+and+organic+carbon+on+boreal+spring+climate+in+the+Earth+system&rft.au=Yasunari%2C+Teppei+J%3BKoster%2C+Randal+D%3BLau%2C+William+K+M%3BKim%2C+Kyu-Myong&rft.aulast=Yasunari&rft.aufirst=Teppei&rft.date=2015-06-16&rft.volume=120&rft.issue=11&rft.spage=5485&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2014JD022977 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-8996 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 22 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table, sketch maps N1 - Last updated - 2015-10-01 N1 - SubjectsTermNotLitGenreText - aerosols; atmospheric transport; carbon; chemical composition; clastic sediments; climate change; climate effects; deposition; dust; environmental effects; global; meltwater; meteorology; organic carbon; pollution; seasonal variations; sediments; snow; snowmelt; transport DO - http://dx.doi.org/10.1002/2014JD022977 ER - TY - JOUR T1 - Descent without Modification? The Thermal Chemistry of H2O2 on Europa and Other Icy Worlds AN - 1859481373; PQ0003999182 AB - The strong oxidant H2O2 is known to exist in solid form on Europa and is suspected to exist on several other Solar System worlds at temperatures below 200 K. However, little is known of the thermal chemistry that H2O2 might induce under these conditions. Here, we report new laboratory results on the reactivity of solid H2O2 with eight different compounds in H2O-rich ices. Using infrared spectroscopy, we monitored compositional changes in ice mixtures during warming. The compounds CH4 (methane), C3H4 (propyne), CH3OH (methanol), and CH3CN (acetonitrile) were unaltered by the presence of H2O2 in ices, showing that exposure to either solid H2O2 or frozen H2O+H2O2 at cryogenic temperatures will not oxidize these organics, much less convert them to CO2. This contrasts strongly with the much greater reactivity of organics with H2O2 at higher temperatures, and particularly in the liquid and gas phases. Of the four inorganic compounds studied, CO, H2S, NH3, and SO2, only the last two reacted in ices containing H2O2, NH3 making \documentclass{aastex}\usepackage{amsbsy}\usepackage{amsfonts}\use p ackage{amssymb}\usepackage{bm}\usepackage{mathrsfs}\usepackage{pif o n t}\usepackage{stmaryrd}\usepackage{textcomp}\usepackage{portland, xspace}\usepackage{amsmath, amsxtra}\pagestyle{empty}\DeclareMathSizes{10}{9}{7}{6}\begin{docu m ent} $${ \rm NH}_4 +}$$ \end{document} and SO2 making \documentclass{aastex}\usepackage{amsbsy}\usepackage{amsfonts}\use p ackage{amssymb}\usepackage{bm}\usepackage{mathrsfs}\usepackage{pif o n t}\usepackage{stmaryrd}\usepackage{textcomp}\usepackage{portland, xspace}\usepackage{amsmath, amsxtra}\pagestyle{empty}\DeclareMathSizes{10}{9}{7}{6}\begin{docu m ent} $${ \rm SO}_42 -}$$ \end{document} by H+ and e- transfer, respectively. An important astrobiological conclusion is that formation of surface H2O2 on Europa and that molecule's downward movement with H2O-ice do not necessarily mean that all organics encountered in icy subsurface regions will be destroyed by H2O2 oxidation. Key Words: Europa-Laboratory investigations-Icy moons-Infrared spectroscopy-H2O2 resistance. Astrobiology 15, 453-461. JF - Astrobiology AU - Loeffler, Mark J AU - Hudson, Reggie L AD - Astrochemistry Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland. Y1 - 2015/06// PY - 2015 DA - June 2015 SP - 453 EP - 461 PB - Mary Ann Liebert, Inc., 2 Madison Ave Larchmont NY 10538-1962 United States VL - 15 IS - 6 SN - 1531-1074, 1531-1074 KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859481373?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Astrobiology&rft.atitle=Descent+without+Modification%3F+The+Thermal+Chemistry+of+H2O2+on+Europa+and+Other+Icy+Worlds&rft.au=Loeffler%2C+Mark+J%3BHudson%2C+Reggie+L&rft.aulast=Loeffler&rft.aufirst=Mark&rft.date=2015-06-01&rft.volume=15&rft.issue=6&rft.spage=453&rft.isbn=&rft.btitle=&rft.title=Astrobiology&rft.issn=15311074&rft_id=info:doi/10.1089%2Fast.2014.1195 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2017-01-01 N1 - Number of references - 55 N1 - Last updated - 2017-01-18 DO - http://dx.doi.org/10.1089/ast.2014.1195 ER - TY - JOUR T1 - Holidays in lights: Tracking cultural patterns in demand for energy services AN - 1776647130; PQ0002794793 AB - Successful climate change mitigation will involve not only technological innovation, but also innovation in how we understand the societal and individual behaviors that shape the demand for energy services. Traditionally, individual energy behaviors have been described as a function of utility optimization and behavioral economics, with price restructuring as the dominant policy lever. Previous research at the macro-level has identified economic activity, power generation and technology, and economic role as significant factors that shape energy use. However, most demand models lack basic contextual information on how dominant social phenomenon, the changing demographics of cities, and the sociocultural setting within which people operate, affect energy decisions and use patterns. Here we use high-quality Suomi-NPP VIIRS nighttime environmental products to: (1) observe aggregate human behavior through variations in energy service demand patterns during the Christmas and New Year's season and the Holy Month of Ramadan and (2) demonstrate that patterns in energy behaviors closely track sociocultural boundaries at the country, city, and district level. These findings indicate that energy decision making and demand is a sociocultural process as well as an economic process, often involving a combination of individual price-based incentives and societal-level factors. While nighttime satellite imagery has been used to map regional energy infrastructure distribution, tracking daily dynamic lighting demand at three major scales of urbanization is novel. This methodology can enrich research on the relative importance of drivers of energy demand and conservation behaviors at fine scales. Our initial results demonstrate the importance of seating energy demand frameworks in a social context. Key Points * Science-quality VIIRS night-sky products can capture short-term changes in energy service demand * We explore the influence of cultural, socioeconomic, and geopolitical groupings on energy use patterns * We conclude that energy decision-making and demand is both an individual and sociocultural process JF - Earth's Future AU - Roman, Miguel O AU - Stokes, Eleanor C AD - NASA Goddard Space Flight Center, Terrestrial Information Systems Laboratory, Greenbelt, Maryland, USA. Y1 - 2015/06// PY - 2015 DA - June 2015 SP - 182 EP - 205 PB - Wiley Subscription Services, Inc. VL - 3 IS - 6 SN - 2328-4277, 2328-4277 KW - Sustainability Science Abstracts; Meteorological & Geoastrophysical Abstracts; Environment Abstracts KW - Culture KW - Urbanization KW - Climate change KW - Lighting KW - Energy consumption KW - Energy demand KW - Infrastructure KW - Cities KW - Human behavior KW - Behavior KW - Electric power generation KW - Energy KW - Economics KW - Conservation KW - Seasonal variability KW - Technology KW - Innovations KW - ENA 03:Energy KW - M2 551.583:Variations (551.583) KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1776647130?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Earth%27s+Future&rft.atitle=Holidays+in+lights%3A+Tracking+cultural+patterns+in+demand+for+energy+services&rft.au=Roman%2C+Miguel+O%3BStokes%2C+Eleanor+C&rft.aulast=Roman&rft.aufirst=Miguel&rft.date=2015-06-01&rft.volume=3&rft.issue=6&rft.spage=182&rft.isbn=&rft.btitle=&rft.title=Earth%27s+Future&rft.issn=23284277&rft_id=info:doi/10.1002%2F2014EF000285 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-03-01 N1 - Last updated - 2016-04-13 N1 - SubjectsTermNotLitGenreText - Human behavior; Climate change; Conservation; Seasonal variability; Culture; Urbanization; Lighting; Energy consumption; Infrastructure; Energy demand; Cities; Behavior; Energy; Electric power generation; Economics; Innovations; Technology DO - http://dx.doi.org/10.1002/2014EF000285 ER - TY - JOUR T1 - Sources of organic carbon for Rimicaris hybisae: Tracing individual fatty acids at two hydrothermal vent fields in the Mid-Cayman rise AN - 1732813933; PQ0002231552 AB - Hydrothermal vents harbor ecosystems mostly decoupled from organic carbon synthesized with the energy of sunlight (photosynthetic carbon source) but fueled instead by oxidation of reduced compounds to generate a chemosynthetic carbon source. Our study aimed to disentangle photosynthetic and chemosynthetic organic carbon sources for the shrimp species Rimicaris hybisae, a primary consumer presumed to obtain its organic carbon mainly from ectosymbiotic chemoautotrophic bacteria living on its gill cover membrane. To provide ectosymbionts with ideal conditions for chemosynthesis, these shrimp live in dense clusters around vent chimneys; they are, however, also found sparsely distributed adjacent to diffuse vent flows, where they might depend on alternative food sources. Densely and sparsely distributed shrimp were sampled and dissected into abdominal tissue and gill cover membrane, covered with ectosymbiotic bacteria, at two hydrothermal vent fields in the Mid-Cayman rise that differ in vent chemistry. Fatty acids (FA) were extracted from shrimp tissues and their carbon isotopic compositions assessed. The FA data indicate that adult R. hybisae predominantly rely on bacteria for their organic carbon needs. Their FA composition is dominated by common bacterial FA of the n7 family (~41%). Bacterial FA of the n4 FA family are also abundant and found to constitute good biomarkers for gill ectosymbionts. Sparsely distributed shrimp contain fractions of n4 FA in gill cover membranes ~4% lower than densely packed ones (~18%) and much higher fractions of photosynthetic FA in abdominal tissues, ~4% more (compared with 1.6%), suggesting replacement of ectosymbionts along with exoskeletons (molt), while they take up alternative diets of partly photosynthetic organic carbon. Abdominal tissues also contain photosynthetic FA from a second source taken up presumably during an early dispersal phase and still present to c. 3% in adult shrimp. The contribution of photosynthetic carbon to the FA pool of adult R. hybisae is, however, overall small (max. 8%). Significant differences in carbon isotopic values of chemosynthetically derived FA between vent fields suggest that different dominant C fixation pathways are being used. JF - Deep Sea Research (Part I, Oceanographic Research Papers) AU - Streit, Kathrin AU - Bennett, Sarah A AU - Van Dover, Cindy L AU - Coleman, Max AD - NASA Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA Y1 - 2015/06// PY - 2015 DA - June 2015 SP - 13 EP - 20 PB - Elsevier B.V., P.O. Box 800 Kidlington Oxford OX5 1DX United Kingdom VL - 100 SN - 0967-0637, 0967-0637 KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources; Oceanic Abstracts KW - Chemosynthetic carbon source KW - Photosynthetic carbon source KW - Hydrothermal vent chemistry KW - Piccard KW - Von Damm KW - Ectosymbionts KW - Organic carbon KW - Carbon sources KW - Biomarkers KW - Molting KW - Hydrothermal springs KW - Carbon KW - Chemoautotrophic bacteria KW - Food sources KW - Sunlight KW - Deep sea KW - Consumers KW - Marine crustaceans KW - Gills KW - Exoskeleton KW - Diets KW - Marine KW - Data processing KW - Symbionts KW - Decapoda KW - Rimicaris KW - Hydrothermal vents KW - biomarkers KW - Chemosynthesis KW - Energy KW - Oxidation KW - Fatty acids KW - Dispersal KW - O 5080:Legal/Governmental KW - D 04040:Ecosystem and Ecology Studies KW - Q1 08604:Stock assessment and management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1732813933?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Deep+Sea+Research+%28Part+I%2C+Oceanographic+Research+Papers%29&rft.atitle=Sources+of+organic+carbon+for+Rimicaris+hybisae%3A+Tracing+individual+fatty+acids+at+two+hydrothermal+vent+fields+in+the+Mid-Cayman+rise&rft.au=Streit%2C+Kathrin%3BBennett%2C+Sarah+A%3BVan+Dover%2C+Cindy+L%3BColeman%2C+Max&rft.aulast=Streit&rft.aufirst=Kathrin&rft.date=2015-06-01&rft.volume=100&rft.issue=&rft.spage=13&rft.isbn=&rft.btitle=&rft.title=Deep+Sea+Research+%28Part+I%2C+Oceanographic+Research+Papers%29&rft.issn=09670637&rft_id=info:doi/10.1016%2Fj.dsr.2015.02.003 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-11-01 N1 - Last updated - 2016-03-30 N1 - SubjectsTermNotLitGenreText - Chemosynthesis; Symbionts; Organic carbon; Fatty acids; Biomarkers; Marine crustaceans; Hydrothermal springs; Gills; Exoskeleton; Diets; Data processing; Hydrothermal vents; Carbon sources; Molting; biomarkers; Chemoautotrophic bacteria; Carbon; Energy; Food sources; Oxidation; Sunlight; Consumers; Deep sea; Dispersal; Decapoda; Rimicaris; Marine DO - http://dx.doi.org/10.1016/j.dsr.2015.02.003 ER - TY - JOUR T1 - SPECTROSCOPIC EVIDENCE FOR A TEMPERATURE INVERSION IN THE DAYSIDE ATMOSPHERE OF HOT JUPITER WASP-33b AN - 1727680993; PQ0002187272 AB - We present observations of two occultations of the extrasolar planet WASP-33b using the Wide Field Camera 3 (WFC3) on the Hubble Space Telescope, which allow us to constrain the temperature structure and composition of its dayside atmosphere. WASP-33b is the most highly irradiated hot Jupiter discovered to date, and the only exoplanet known to orbit a delta -Scuti star. We observed in spatial scan mode to decrease instrument systematic effects in the data, and removed fluctuations in the data due to stellar pulsations. The rms for our final, binned spectrum is 1.05 times the photon noise. We compare our final spectrum, along with previously published photometric data, to atmospheric models of WASP-33b spanning a wide range in temperature profiles and chemical compositions. We find that the data require models with an oxygen-rich chemical composition and a temperature profile that increases at high altitude. We find that our measured spectrum displays an excess in the measured flux toward short wavelengths that is best explained as emission from TiO. If confirmed by additional measurements at shorter wavelengths, this planet would become the first hot Jupiter with a thermal inversion that can be definitively attributed to the presence of TiO in its dayside atmosphere. JF - Astrophysical Journal AU - Haynes, Korey AU - Mandell, Avi M AU - Madhusudhan, Nikku AU - Deming, Drake AU - Knutson, Heather AD - Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA, khaynes0112@gmail.com PY - 2015 SP - 1 EP - 12 PB - IOP Publishing, The Public Ledger Building, Suite 929 Philadelphia PA 19106 United States VL - 806 IS - 2 SN - 0004-637X, 0004-637X KW - Pollution Abstracts; Meteorological & Geoastrophysical Abstracts KW - eclipses KW - planetary systems KW - techniques: photometric KW - techniques: spectroscopic KW - Chemical composition KW - Atmospheric pollution models KW - Acoustic waves KW - Temperature KW - Jupiter KW - Temperature inversions KW - Star pulsations KW - Atmosphere KW - Temperature structure KW - Inversions KW - Atmospheric models KW - Altitude KW - Inversion KW - Photometric observations KW - Atmospheric chemistry KW - Atmospheric chemistry models KW - Emissions KW - Emission measurements KW - Hubble Space Telescope KW - Stellar investigations KW - Noise pollution KW - Temperature profiles KW - P 0000:AIR POLLUTION KW - M2 523.4:Planets (523.4) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1727680993?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Astrophysical+Journal&rft.atitle=SPECTROSCOPIC+EVIDENCE+FOR+A+TEMPERATURE+INVERSION+IN+THE+DAYSIDE+ATMOSPHERE+OF+HOT+JUPITER+WASP-33b&rft.au=Haynes%2C+Korey%3BMandell%2C+Avi+M%3BMadhusudhan%2C+Nikku%3BDeming%2C+Drake%3BKnutson%2C+Heather&rft.aulast=Haynes&rft.aufirst=Korey&rft.date=2015-06-01&rft.volume=806&rft.issue=2&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Astrophysical+Journal&rft.issn=0004637X&rft_id=info:doi/10.1088%2F0004-637X%2F806%2F2%2F146 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-10-01 N1 - Last updated - 2015-12-23 N1 - SubjectsTermNotLitGenreText - Atmospheric pollution models; Acoustic waves; Jupiter; Temperature inversions; Star pulsations; Temperature structure; Inversions; Atmospheric models; Photometric observations; Atmospheric chemistry models; Hubble Space Telescope; Stellar investigations; Noise pollution; Temperature profiles; Altitude; Chemical composition; Inversion; Atmospheric chemistry; Emission measurements; Emissions; Temperature; Atmosphere DO - http://dx.doi.org/10.1088/0004-637X/806/2/146 ER - TY - JOUR T1 - Global patterns and controls of soil organic carbon dynamics as simulated by multiple terrestrial biosphere models; current status and future directions AN - 1722156673; 2015-099155 AB - Soil is the largest organic carbon (C) pool of terrestrial ecosystems, and C loss from soil accounts for a large proportion of land-atmosphere C exchange. Therefore, a small change in soil organic C (SOC) can affect atmospheric carbon dioxide (CO (sub 2) ) concentration and climate change. In the past decades, a wide variety of studies have been conducted to quantify global SOC stocks and soil C exchange with the atmosphere through site measurements, inventories, and empirical/process-based modeling. However, these estimates are highly uncertain, and identifying major driving forces controlling soil C dynamics remains a key research challenge. This study has compiled century-long (1901-2010) estimates of SOC storage and heterotrophic respiration (Rh) from 10 terrestrial biosphere models (TBMs) in the Multi-scale Synthesis and Terrestrial Model Intercomparison Project and two observation-based data sets. The 10 TBM ensemble shows that global SOC estimate ranges from 425 to 2111 Pg C (1 Pg = 10 (super 15) g) with a median value of 1158 Pg C in 2010. The models estimate a broad range of Rh from 35 to 69 Pg C yr (super -1) with a median value of 51 Pg C yr (super -1) during 2001-2010. The largest uncertainty in SOC stocks exists in the 40-65 degrees N latitude whereas the largest cross-model divergence in Rh are in the tropics. The modeled SOC change during 1901-2010 ranges from -70 Pg C to 86 Pg C, but in some models the SOC change has a different sign from the change of total C stock, implying very different contribution of vegetation and soil pools in determining the terrestrial C budget among models. The model ensemble-estimated mean residence time of SOC shows a reduction of 3.4 years over the past century, which accelerate C cycling through the land biosphere. All the models agreed that climate and land use changes decreased SOC stocks, while elevated atmospheric CO (sub 2) and nitrogen deposition over intact ecosystems increased SOC stocks-even though the responses varied significantly among models. Model representations of temperature and moisture sensitivity, nutrient limitation, and land use partially explain the divergent estimates of global SOC stocks and soil C fluxes in this study. In addition, a major source of systematic error in model estimations relates to nonmodeled SOC storage in wetlands and peatlands, as well as to old C storage in deep soil layers. Abstract Copyright (2015), . The Authors. JF - Global Biogeochemical Cycles AU - Tian, Hanqin AU - Lu, Chaoqun AU - Yang, Jia AU - Banger, Kamaljit AU - Huntzinger, Deborah N AU - Schwalm, Christopher R AU - Michalak, Anna M AU - Cook, Robert AU - Ciais, Philippe AU - Hayes, Daniel AU - Huang, Maoyi AU - Ito, Akihiko AU - Jain, Atul K AU - Lei, Huimin AU - Mao, Jiafu AU - Pan, Shufen AU - Post, Wilfred M AU - Peng, Shushi AU - Poulter, Benjamin AU - Ren, Wei AU - Ricciuto, Daniel AU - Schaefer, Kevin AU - Shi, Xiaoying AU - Tao, Bo AU - Wang, Weile AU - Wei, Yaxing AU - Yang, Qichun AU - Zhang, Bowen AU - Zeng, Ning Y1 - 2015/06// PY - 2015 DA - June 2015 SP - 775 EP - 792 PB - American Geophysical Union, Washington, DC VL - 29 IS - 6 SN - 0886-6236, 0886-6236 KW - soils KW - respiration KW - peatlands KW - terrestrial environment KW - numerical models KW - ecosystems KW - nitrogen KW - geochemical cycle KW - carbon dioxide KW - nitrogen cycle KW - controls KW - mires KW - dynamics KW - carbon KW - biosphere KW - residence time KW - carbon cycle KW - organic carbon KW - uncertainty KW - storage KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1722156673?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Global+Biogeochemical+Cycles&rft.atitle=Global+patterns+and+controls+of+soil+organic+carbon+dynamics+as+simulated+by+multiple+terrestrial+biosphere+models%3B+current+status+and+future+directions&rft.au=Tian%2C+Hanqin%3BLu%2C+Chaoqun%3BYang%2C+Jia%3BBanger%2C+Kamaljit%3BHuntzinger%2C+Deborah+N%3BSchwalm%2C+Christopher+R%3BMichalak%2C+Anna+M%3BCook%2C+Robert%3BCiais%2C+Philippe%3BHayes%2C+Daniel%3BHuang%2C+Maoyi%3BIto%2C+Akihiko%3BJain%2C+Atul+K%3BLei%2C+Huimin%3BMao%2C+Jiafu%3BPan%2C+Shufen%3BPost%2C+Wilfred+M%3BPeng%2C+Shushi%3BPoulter%2C+Benjamin%3BRen%2C+Wei%3BRicciuto%2C+Daniel%3BSchaefer%2C+Kevin%3BShi%2C+Xiaoying%3BTao%2C+Bo%3BWang%2C+Weile%3BWei%2C+Yaxing%3BYang%2C+Qichun%3BZhang%2C+Bowen%3BZeng%2C+Ning&rft.aulast=Tian&rft.aufirst=Hanqin&rft.date=2015-06-01&rft.volume=29&rft.issue=6&rft.spage=775&rft.isbn=&rft.btitle=&rft.title=Global+Biogeochemical+Cycles&rft.issn=08866236&rft_id=info:doi/10.1002%2F2014GB005021 L2 - http://www.agu.org/journals/gb/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 66 N1 - PubXState - DC N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2015-10-15 N1 - SubjectsTermNotLitGenreText - biosphere; carbon; carbon cycle; carbon dioxide; controls; dynamics; ecosystems; geochemical cycle; mires; nitrogen; nitrogen cycle; numerical models; organic carbon; peatlands; residence time; respiration; soils; storage; terrestrial environment; uncertainty DO - http://dx.doi.org/10.1002/2014GB005021 ER - TY - JOUR T1 - Linking Europa's plume activity to tides, tectonics, and liquid water AN - 1707520470; 2015-084805 AB - Much of the geologic activity preserved on Europa's icy surface has been attributed to tidal deformation, mainly due to Europa's eccentric orbit. Although the surface is geologically young (30-80 Myr), there is little information as to whether tidally-driven surface processes are ongoing. However, a recent detection of water vapor near Europa's south pole suggests that it may be geologically active. Initial observations indicated that Europa's plume eruptions are time-variable and may be linked to its tidal cycle. Saturn's moon, Enceladus, which shares many similar traits with Europa, displays tidally-modulated plume eruptions, which bolstered this interpretation. However, additional observations of Europa at the same time in its orbit failed to yield a plume detection, casting doubt on the tidal control hypothesis. The purpose of this study is to analyze the timing of plume eruptions within the context of Europa's tidal cycle to determine whether such a link exists and examine the inferred similarities and differences between plume activity on Europa and Enceladus. To do this, we determine the locations and orientations of hypothetical tidally-driven fractures that best match the temporal variability of the plumes observed at Europa. Specifically, we identify model faults that are in tension at the time in Europa's orbit when a plume was detected and in compression at times when the plume was not detected. We find that tidal stress driven solely by eccentricity is incompatible with the observations unless additional mechanisms are controlling the eruption timing or restricting the longevity of the plumes. The addition of obliquity tides, and corresponding precession of the spin pole, can generate a number of model faults that are consistent with the pattern of plume detections. The locations and orientations of these hypothetical source fractures are robust across a broad range of precession rates and spin pole directions. Analysis of the stress variations across the fractures suggests that the plumes would be best observed earlier in the orbit (true anomaly approximately 120 degrees ). Our results indicate that Europa's plumes, if confirmed, differ in many respects from the Enceladean plumes and that either active fractures or volatile sources are rare. JF - Icarus AU - Rhoden, Alyssa Rose AU - Hurford, Terry A AU - Roth, Lorenz AU - Retherford, Kurt Y1 - 2015/06// PY - 2015 DA - June 2015 SP - 169 EP - 178 PB - Elsevier, New York, NY VL - 253 SN - 0019-1035, 0019-1035 KW - icy satellites KW - plumes KW - obliquity of the ecliptic KW - Europa Satellite KW - orbits KW - water vapor KW - Galilean satellites KW - ice shell KW - eccentricity KW - fractures KW - tectonics KW - satellites KW - compression KW - faults KW - water KW - liquid phase KW - orientation KW - patterns KW - cyclic processes KW - stress KW - precession KW - deformation KW - tides KW - volatiles KW - detection KW - Enceladus Satellite KW - tension KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1707520470?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Linking+Europa%27s+plume+activity+to+tides%2C+tectonics%2C+and+liquid+water&rft.au=Rhoden%2C+Alyssa+Rose%3BHurford%2C+Terry+A%3BRoth%2C+Lorenz%3BRetherford%2C+Kurt&rft.aulast=Rhoden&rft.aufirst=Alyssa&rft.date=2015-06-01&rft.volume=253&rft.issue=&rft.spage=169&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.02.023 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 48 N1 - PubXState - NY N1 - Document feature - illus. N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-11-19 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - compression; cyclic processes; deformation; detection; eccentricity; Enceladus Satellite; Europa Satellite; faults; fractures; Galilean satellites; ice shell; icy satellites; liquid phase; obliquity of the ecliptic; orbits; orientation; patterns; plumes; precession; satellites; stress; tectonics; tension; tides; volatiles; water; water vapor DO - http://dx.doi.org/10.1016/j.icarus.2015.02.023 ER - TY - JOUR T1 - The opposition effect in Saturn's main rings as seen by Cassini ISS; 2, Constraints on the ring particles and their regolith with analytical radiative transfer models AN - 1707520278; 2015-084814 AB - The opposition effect in Saturn's main rings is characterized by a surge in ring brightness, when the phase angle approaches zero degree. This effect can be used to derive: physical properties of the ring particles and the ring layer, via the shadow hiding mechanism; and physical properties of the regolith grains that cover the ring particles, via the coherent backscattering mechanism. Since the exact origin of this effect is still a matter of debate, we try different combinations of the physical mechanisms cited above to derive constraints on the nature, the texture, and the disposition of the ring particles. In particular, we derive regolith grain sizes, particle sizes, differential power law indices, filling factors, and vertical thicknesses; and we compare them with independent works to validate or invalidate the assumptions of the opposition effect models used. Our coherent backscattering model provides grain sizes similar to the sizes estimated from water ice band depth modeling in the near infrared. Our shadow hiding model assuming a power law size distribution provides vertical thickness consistent with previous estimates from density waves measurements and N-body simulations. We show that the assumption of an homogeneous medium is a key parameter in the shadow hiding modeling. In the case of the B ring, we demonstrate that all previous photometric models assuming an homogeneous ring layer (i.e. uniform particle size distribution, random spacing of the particles and small filling factor) have led to a set of unconfirmed solutions. This result reinforces the idea that the Saturn's main rings should be modeled as an heterogeneous medium. JF - Icarus AU - Deau, Estelle Y1 - 2015/06// PY - 2015 DA - June 2015 SP - 311 EP - 345 PB - Elsevier, New York, NY VL - 253 SN - 0019-1035, 0019-1035 KW - near-infrared spectra KW - power law KW - simulation KW - giant planets KW - brightness KW - Saturn KW - photometry KW - Cassini-Huygens Mission KW - N-body simulation KW - ice KW - thickness KW - spectra KW - outer planets KW - radiative transfer KW - Imaging Science Subsystem KW - textures KW - grain size KW - models KW - planets KW - planetary rings KW - physical properties KW - optical depth KW - regolith KW - particles KW - backscattering KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1707520278?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=The+opposition+effect+in+Saturn%27s+main+rings+as+seen+by+Cassini+ISS%3B+2%2C+Constraints+on+the+ring+particles+and+their+regolith+with+analytical+radiative+transfer+models&rft.au=Deau%2C+Estelle&rft.aulast=Deau&rft.aufirst=Estelle&rft.date=2015-06-01&rft.volume=253&rft.issue=&rft.spage=311&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.08.031 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 187 N1 - PubXState - NY N1 - Document feature - illus. incl. 15 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-08-27 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - backscattering; brightness; Cassini-Huygens Mission; giant planets; grain size; ice; Imaging Science Subsystem; models; N-body simulation; near-infrared spectra; optical depth; outer planets; particles; photometry; physical properties; planetary rings; planets; power law; radiative transfer; regolith; Saturn; simulation; spectra; textures; thickness DO - http://dx.doi.org/10.1016/j.icarus.2013.08.031 ER - TY - JOUR T1 - Metallic ions in the upper atmosphere of Mars from the passage of comet C/2013 A1 (Siding Spring) AN - 1705100369; PQ0001771723 AB - We report the first in situ detection of metal ions in the upper atmosphere of Mars resulting from the ablation of dust particles from comet Siding Spring. This detection was carried out by the Neutral Gas and Ion Mass Spectrometer on board the Mars Atmosphere and Volatile Evolution Mission. Metal ions of Na, Mg, Al, K, Ti, Cr, Mn, Fe, Co, Ni, Cu, and Zn, and possibly of Si, and Ca, were identified in the ion spectra collected at altitudes of ~185km. The measurements revealed that Na super(+) was the most abundant species, and that the remaining metals were depleted with respect to the CI (type 1 carbonaceous Chondrites) abundance of Na super(+). The temporal profile and abundance ratios of these metal ions suggest that the combined effects of dust composition, partial ablation, differential upward transport, and differences in the rates of formation and removal of these metal ions are responsible for the observed depletion. Key Points * Metal ions were identified for the first time in the upper atmosphere of Mars * Metal ions result from cometary dust ablation in the atmosphere of Mars * Metal ions were depleted with respect to the CI abundance of Na super(+) JF - Geophysical Research Letters AU - Benna, M AU - Mahaffy, PR AU - Grebowsky, J M AU - Plane, JMC AU - Yelle, R V AU - Jakosky, B M AD - NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2015/06// PY - 2015 DA - June 2015 SP - 4670 EP - 4675 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 42 IS - 12 SN - 0094-8276, 0094-8276 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Dust particles KW - Population dynamics KW - Atmosphere KW - Dust composition KW - Dust KW - Altitude KW - Cometary dust KW - Ablation KW - Upper atmosphere KW - Biological surveys KW - Metals KW - Ions KW - Atmospheric particulates KW - Atmospheric gases KW - Metal ions KW - Depletion KW - Dusts KW - Comets KW - Metals in dust particles KW - Mars atmosphere KW - Chondrites KW - Evolution KW - Eolian dust KW - Q2 09262:Methods and instruments KW - SW 0810:General KW - M2 523.4:Planets (523.4) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1705100369?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=Metallic+ions+in+the+upper+atmosphere+of+Mars+from+the+passage+of+comet+C%2F2013+A1+%28Siding+Spring%29&rft.au=Benna%2C+M%3BMahaffy%2C+PR%3BGrebowsky%2C+J+M%3BPlane%2C+JMC%3BYelle%2C+R+V%3BJakosky%2C+B+M&rft.aulast=Benna&rft.aufirst=M&rft.date=2015-06-01&rft.volume=42&rft.issue=12&rft.spage=4670&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL064159 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Biological surveys; Atmospheric particulates; Atmospheric gases; Metal ions; Population dynamics; Upper atmosphere; Dust; Ablation; Eolian dust; Metals in dust particles; Chondrites; Mars atmosphere; Cometary dust; Dust particles; Dust composition; Comets; Ions; Metals; Altitude; Depletion; Dusts; Atmosphere; Evolution DO - http://dx.doi.org/10.1002/2015GL064159 ER - TY - JOUR T1 - Hypobaric Decompression Sickness Treatment Model AN - 1705062162; PQ0001825103 AB - INTRODUCTION: The Hypobaric Decompression Sickness (DCS) Treatment Model links a decrease in computed bubble volume from increased pressure ([Delta]P), increased oxygen (O sub(2)) partial pressure, and passage of time during treatment to the probability of symptom resolution [P(SR)]. The decrease in offending volume is realized in two stages: 1) during compression via Boyle's law; and 2) during subsequent dissolution of the gas phase via the oxygen window. METHODS: We established an empirical model for the P(SR) while accounting for multiple symptoms within subjects. The data consisted of 154 cases of hypobaric DCS symptoms with ancillary information from tests on 56 men and 18 women. RESULTS: Our best estimated model is P(SR) = 1/(1+exp(-(ln([Delta]P) - 1.510 + 0.795 x AMB - 0.00308 x Ts)/0.478)), where [Delta]P is pressure difference (psid); AMB = 1 if ambulation took place during part of the altitude exposure, otherwise AMB = 0; and Ts is the elapsed time in minutes from the start of altitude exposure to recognition of a DCS symptom. DISCUSSION: Values of [Delta]P as inputs to the model would be calculated from the Tissue Bubble Dynamics Model based on the effective treatment pressure: [Delta]P = P2 - P1| = P1 x V1/V2 - P1, where V1 is the computed volume of a bubble at low pressure P1 and V2 is computed volume after a change to a higher pressure P2. If 100% ground-level oxygen was breathed in place of air, then V2 continues to decrease through time at P2 at a faster rate. JF - Aerospace Medicine and Human Performance AU - Conkin, Johnny AU - Abercromby, Andrew F J AU - Dervay, Joseph P AU - Feiveson, Alan H AU - Gernhardt, Michael L AU - Norcross, Jason R AU - Ploutz-Snyder, Robert AU - Wessel, James H, III AD - Universities Space Research Association, 3600 Bay Area Boulevard, Houston, TX 77058-2769, johnny.conkin-1@nasa.gov Y1 - 2015/06// PY - 2015 DA - Jun 2015 SP - 508 EP - 517 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 86 IS - 6 SN - 2375-6314, 2375-6314 KW - Health & Safety Science Abstracts KW - oxygen window KW - Boyle's law KW - astronaut KW - survival analysis KW - tissue bubble dynamics KW - Oxygen KW - Altitude KW - Human factors KW - H 6000:Natural Disasters/Civil Defense/Emergency Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1705062162?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ahealthsafetyabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Aerospace+Medicine+and+Human+Performance&rft.atitle=Hypobaric+Decompression+Sickness+Treatment+Model&rft.au=Conkin%2C+Johnny%3BAbercromby%2C+Andrew+F+J%3BDervay%2C+Joseph+P%3BFeiveson%2C+Alan+H%3BGernhardt%2C+Michael+L%3BNorcross%2C+Jason+R%3BPloutz-Snyder%2C+Robert%3BWessel%2C+James+H%2C+III&rft.aulast=Conkin&rft.aufirst=Johnny&rft.date=2015-06-01&rft.volume=86&rft.issue=6&rft.spage=508&rft.isbn=&rft.btitle=&rft.title=Aerospace+Medicine+and+Human+Performance&rft.issn=23756314&rft_id=info:doi/10.3357%2FAMHP.4178.2015 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Number of references - 22 N1 - Last updated - 2015-09-03 N1 - SubjectsTermNotLitGenreText - Oxygen; Altitude; Human factors DO - http://dx.doi.org/10.3357/AMHP.4178.2015 ER - TY - JOUR T1 - Cloud-radiative driving of the Madden-Julian oscillation as seen by the A-Train AN - 1701485625; PQ0001723072 AB - Cloud and water vapor radiative heating anomalies associated with convection may be an effective source of moist static energy driving the Madden-Julian Oscillation (MJO). In this paper 5years of radiative heating profiles derived from CloudSat radar and Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation data are analyzed to document radiative heating anomalies during the MJO. Atmospheric shortwave absorption and surface longwave radiation anomalies are of opposite sign and 10-20% as large as top-of-atmosphere outgoing longwave radiation (OLR) anomalies, confirming that OLR provides a useful estimate of the total column radiative heating anomaly. Positive anomalies generally peak about 1week before the MJO peak and are smallest over the Indian Ocean. Anomalies over the Maritime Continent are strongest and coincident with the MJO peak. Shortwave heating profile anomalies are weaker than longwave anomalies in the active region of the MJO but generally of opposite sign; thus, shortwave heating damps the longwave destabilization of the lower troposphere. The exception is the onset phase of the MJO, where shortwave and longwave heating anomalies due to thin cirrus are both positive in the upper troposphere and exert a stabilizing influence. Specific humidity anomalies in the middle troposphere reach 0.5gkg super(-1), but the associated clear-sky heating anomaly is small. Radiative enhancement of column moist static energy becomes significant as precipitation increases before the MJO peak and remains high after the MJO peak as precipitation begins to decline. Elevated radiative heating after the peak may contribute to destabilizing the MJO. Key Points * Positive radiative heating anomalies are greatest in advance of the MJO peak * Shortwave heating partly offsets longwave heating except before the MJO peak * Elevated heating after the MJO peak may contribute to destabilizing the MJO JF - Journal of Geophysical Research: Atmospheres AU - Del Genio, Anthony D AU - Chen, Yonghua AD - NASA Goddard Institute for Space Studies, New York, New York, USA. Y1 - 2015/06// PY - 2015 DA - June 2015 SP - 5344 EP - 5356 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 120 IS - 11 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Remote Sensing KW - Specific humidity KW - Convection KW - Outgoing long-wave radiation KW - Humidity anomalies KW - Convection development KW - Radiation KW - Absorption KW - Moist static energy KW - Radiative heating KW - Atmospheric precipitations KW - ISW, Indian Ocean KW - Satellite Technology KW - Water vapor in the atmosphere KW - Troposphere KW - Precipitation KW - Stabilizing KW - Madden-Julian oscillation KW - Clouds KW - Satellite data KW - Lower troposphere KW - Energy KW - Oceans KW - Lidar applications KW - Radar KW - Long-wave radiation KW - LIDAR KW - Q2 09243:Structure, mechanics and thermodynamics KW - SW 0810:General KW - M2 551.577:General Precipitation (551.577) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1701485625?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=Cloud-radiative+driving+of+the+Madden-Julian+oscillation+as+seen+by+the+A-Train&rft.au=Del+Genio%2C+Anthony+D%3BChen%2C+Yonghua&rft.aulast=Del+Genio&rft.aufirst=Anthony&rft.date=2015-06-01&rft.volume=120&rft.issue=11&rft.spage=5344&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2015JD023278 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Convection; Specific humidity; Atmospheric precipitations; Radiation; Troposphere; LIDAR; Stabilizing; Outgoing long-wave radiation; Water vapor in the atmosphere; Humidity anomalies; Convection development; Precipitation; Madden-Julian oscillation; Clouds; Satellite data; Lower troposphere; Radar; Lidar applications; Moist static energy; Long-wave radiation; Radiative heating; Remote Sensing; Satellite Technology; Oceans; Energy; Absorption; ISW, Indian Ocean DO - http://dx.doi.org/10.1002/2015JD023278 ER - TY - JOUR T1 - External Influences on Modeled and Observed Cloud Trends AN - 1701477916; PQ0001687606 AB - Understanding the cloud response to external forcing is a major challenge for climate science. This crucial goal is complicated by intermodel differences in simulating present and future cloud cover and by observational uncertainty. This is the first formal detection and attribution study of cloud changes over the satellite era. Presented herein are CMIP5 model-derived fingerprints of externally forced changes to three cloud properties: the latitudes at which the zonally averaged total cloud fraction (CLT) is maximized or minimized, the zonal average CLT at these latitudes, and the height of high clouds at these latitudes. By considering simultaneous changes in all three properties, the authors define a coherent multivariate fingerprint of cloud response to external forcing and use models from phase 5 of CMIP (CMIP5) to calculate the average time to detect these changes. It is found that given perfect satellite cloud observations beginning in 1983, the models indicate that a detectable multivariate signal should have already emerged. A search is then made for signals of external forcing in two observational datasets: ISCCP and PATMOS-x. The datasets are both found to show a poleward migration of the zonal CLT pattern that is incompatible with forced CMIP5 models. Nevertheless, a detectable multivariate signal is predicted by models over the PATMOS-x time period and is indeed present in the dataset. Despite persistent observational uncertainties, these results present a strong case for continued efforts to improve these existing satellite observations, in addition to planning for new missions. JF - Journal of Climate AU - Marvel, Kate AU - Zelinka, Mark AU - Klein, Stephen A AU - Bonfils, Celine AU - Caldwell, Peter AU - Doutriaux, Charles AU - Santer, Benjamin D AU - Taylor, Karl E AD - Lawrence Livermore National Laboratory, Livermore, California, and NASA Goddard Institute for Space Studies, and Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York Y1 - 2015/06// PY - 2015 DA - June 2015 SP - 4820 EP - 4840 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 28 IS - 12 SN - 0894-8755, 0894-8755 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Clouds KW - Radiative forcing KW - Pattern detection KW - Climate models KW - Satellite cloud observations KW - Climates KW - Cloud Cover KW - Cloud cover KW - Migration KW - High level clouds KW - Model Studies KW - Satellite data KW - Planning KW - Atmospheric forcing KW - Cloud properties KW - Q2 09393:Remote geosensing KW - SW 0810:General KW - M2 551.58:Climatology (551.58) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1701477916?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Climate&rft.atitle=External+Influences+on+Modeled+and+Observed+Cloud+Trends&rft.au=Marvel%2C+Kate%3BZelinka%2C+Mark%3BKlein%2C+Stephen+A%3BBonfils%2C+Celine%3BCaldwell%2C+Peter%3BDoutriaux%2C+Charles%3BSanter%2C+Benjamin+D%3BTaylor%2C+Karl+E&rft.aulast=Marvel&rft.aufirst=Kate&rft.date=2015-06-01&rft.volume=28&rft.issue=12&rft.spage=4820&rft.isbn=&rft.btitle=&rft.title=Journal+of+Climate&rft.issn=08948755&rft_id=info:doi/10.1175%2FJCLI-D-14-00734.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Number of references - 66 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Atmospheric forcing; Cloud cover; Clouds; Satellite data; Climate models; Satellite cloud observations; Cloud properties; High level clouds; Planning; Climates; Cloud Cover; Migration; Model Studies DO - http://dx.doi.org/10.1175/JCLI-D-14-00734.1 ER - TY - JOUR T1 - Airmass Origin in the Arctic. Part I: Seasonality AN - 1701477054; PQ0001687602 AB - The first climatology of airmass origin in the Arctic is presented in terms of rigorously defined airmass fractions that partition air according to where it last contacted the planetary boundary layer (PBL). Results from a present-day climate integration of the Goddard Earth Observing System Chemistry-Climate Model (GEOSCCM) reveal that the majority of air in the Arctic below 700 mb last contacted the PBL poleward of 60 degree N. By comparison, 62% ( plus or minus 0.8%) of the air above 700 mb originates over Northern Hemisphere midlatitudes (i.e., "midlatitude air"). Seasonal variations in the airmass fractions above 700 mb reveal that during boreal winter air from midlatitudes originates primarily over the oceans, with 26% ( plus or minus 1.9%) last contacting the PBL over the eastern Pacific, 21% ( plus or minus 0.87%) over the Atlantic, and 16% ( plus or minus 1.2%) over the western Pacific. During summer, by comparison, midlatitude air originates primarily over land, overwhelmingly so over Asia [41% ( plus or minus 1.0%)] and, to a lesser extent, over North America [24% ( plus or minus 1.5%)]. Seasonal variations in the airmass fractions are interpreted in terms of changes in the large-scale ventilation of the midlatitude boundary layer and the midlatitude tropospheric jet. JF - Journal of Climate AU - Orbe, Clara AU - Newman, Paul A AU - Waugh, Darryn W AU - Holzer, Mark AU - Li, Feng AD - Laboratory for Atmospheric Chemistry and Dynamics, NASA Goddard Space Flight Center, Greenbelt, Maryland Y1 - 2015/06// PY - 2015 DA - June 2015 SP - 4997 EP - 5014 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 28 IS - 12 SN - 0894-8755, 0894-8755 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Large-scale motions KW - Transport KW - Climate models KW - Pollution KW - Meteorological data KW - IE, Pacific KW - Seasonal Variations KW - Ventilation KW - Climate change KW - Boundary Layers KW - INW, Asia KW - Ocean-atmosphere system KW - Climatology KW - Atmospheric boundary layer KW - Arctic KW - Seasonal variations KW - Seasonality KW - Marine KW - North America KW - Climates KW - Troposphere KW - A, Atlantic KW - Model Studies KW - PN, Arctic KW - Oceans KW - Boundary layers KW - Q2 09242:Observations and measurements at sea KW - SW 0810:General KW - M2 551.58:Climatology (551.58) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1701477054?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Climate&rft.atitle=Airmass+Origin+in+the+Arctic.+Part+I%3A+Seasonality&rft.au=Orbe%2C+Clara%3BNewman%2C+Paul+A%3BWaugh%2C+Darryn+W%3BHolzer%2C+Mark%3BLi%2C+Feng&rft.aulast=Orbe&rft.aufirst=Clara&rft.date=2015-06-01&rft.volume=28&rft.issue=12&rft.spage=4997&rft.isbn=&rft.btitle=&rft.title=Journal+of+Climate&rft.issn=08948755&rft_id=info:doi/10.1175%2FJCLI-D-14-00720.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Number of references - 66 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Seasonality; Ventilation; Boundary layers; Climate change; Ocean-atmosphere system; Troposphere; Climatology; Meteorological data; Climate models; Atmospheric boundary layer; Seasonal variations; Seasonal Variations; Oceans; Climates; Boundary Layers; Arctic; Model Studies; PN, Arctic; North America; IE, Pacific; INW, Asia; A, Atlantic; Marine DO - http://dx.doi.org/10.1175/JCLI-D-14-00720.1 ER - TY - JOUR T1 - Impact of Irrigation Methods on Land Surface Model Spinup and Initialization of WRF Forecasts AN - 1701475895; PQ0001687634 AB - In the United States, irrigation represents the largest consumptive use of freshwater and accounts for approximately one-third of total water usage. Irrigation impacts soil moisture and can ultimately influence clouds and precipitation through land-planetary boundary layer (PBL) coupling processes. This study utilizes NASA's Land Information System (LIS) and the NASA Unified Weather Research and Forecasting Model (NU-WRF) framework to investigate the effects of drip, flood, and sprinkler irrigation methods on land-atmosphere interactions, including land-PBL coupling and feedbacks at the local scale. To initialize 2-day, 1-km WRF forecasts over the central Great Plains in a drier-than-normal (2006) and a wetter-than-normal year (2008), 5-yr irrigated LIS spinups were used. The offline and coupled simulation results show that regional irrigation impacts are sensitive to time, space, and method and that irrigation cools and moistens the surface over and downwind of irrigated areas, ultimately resulting in both positive and negative feedbacks on the PBL depending on the time of day and background climate conditions. Furthermore, the results portray the importance of both irrigation method physics and correct representation of several key components of land surface models, including accurate and timely land-cover and crop-type classification, phenology (greenness), and soil moisture anomalies (through a land surface model spinup) in coupled prediction models. JF - Journal of Hydrometeorology AU - Lawston, Patricia M AU - Santanello, Joseph A, Jr AU - Zaitchik, Benjamin F AU - Rodell, Matthew AD - Department of Geography, University of Delaware, Newark, Delaware, and Hydrological Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland Y1 - 2015/06// PY - 2015 DA - June 2015 SP - 1135 EP - 1154 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 16 IS - 3 SN - 1525-755X, 1525-755X KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Atmosphere-land interaction KW - Coupled models KW - Land surface model KW - Prediction KW - Surface Irrigation KW - Soil Water KW - Identification keys KW - Classification KW - Phenology KW - Floods KW - Hydrometeorological forecasting KW - Atmospheric boundary layer KW - Weather forecasting KW - Climate models KW - Climates KW - Irrigation KW - Climate KW - Sprinkler Irrigation KW - Precipitation KW - Model Studies KW - Clouds KW - USA KW - Hydrometeorological research KW - USA, Great Plains KW - Numerical simulations KW - Negative feedback KW - Boundary layers KW - Moisture Content KW - Land-atmosphere interaction KW - Soil moisture KW - Information systems KW - Q2 09243:Structure, mechanics and thermodynamics KW - AQ 00006:Sewage KW - SW 0810:General KW - M2 556.16:Runoff (556.16) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1701475895?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydrometeorology&rft.atitle=Impact+of+Irrigation+Methods+on+Land+Surface+Model+Spinup+and+Initialization+of+WRF+Forecasts&rft.au=Lawston%2C+Patricia+M%3BSantanello%2C+Joseph+A%2C+Jr%3BZaitchik%2C+Benjamin+F%3BRodell%2C+Matthew&rft.aulast=Lawston&rft.aufirst=Patricia&rft.date=2015-06-01&rft.volume=16&rft.issue=3&rft.spage=1135&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrometeorology&rft.issn=1525755X&rft_id=info:doi/10.1175%2FJHM-D-14-0203.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Number of references - 57 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Prediction; Phenology; Classification; Boundary layers; Climate; Irrigation; Identification keys; Weather forecasting; Information systems; Climate models; Precipitation; Clouds; Hydrometeorological research; Negative feedback; Numerical simulations; Floods; Hydrometeorological forecasting; Atmospheric boundary layer; Soil moisture; Land-atmosphere interaction; Surface Irrigation; Climates; Sprinkler Irrigation; Moisture Content; Soil Water; Model Studies; USA; USA, Great Plains DO - http://dx.doi.org/10.1175/JHM-D-14-0203.1 ER - TY - JOUR T1 - Examining Deep Convective Cloud Evolution Using Total Lightning, WSR-88D, and GOES-14 Super Rapid Scan Datasets* AN - 1701475661; PQ0001687682 AB - The Geostationary Operational Environmental Satellite-14 (GOES-14) Imager operated in 1-min Super Rapid Scan Operations for GOES-R (SRSOR) mode during summer and fall of 2012 to emulate the high temporal resolution sampling of the GOES-R Advanced Baseline Imager (ABI). The current GOES operational scan interval is 15-30 min, which is too coarse to capture details important for severe convective storm forecasting including 1) when indicators of a severe storm such as rapid cloud-top cooling, overshooting tops, and above-anvil cirrus plumes first appear; 2) how satellite-observed cloud tops truly evolve over time; and 3) how satellite cloud-top observations compare with radar and lightning observations at high temporal resolution. In this paper, SRSOR data, radar, and lightning observations are used to analyze five convective storms, four of which were severe, to address these uncertainties. GOES cloud-top cooling, increased lightning flash rates, and peak precipitation echo tops often preceded severe weather, signaling rapid intensification of the storm updraft. Near the time of several severe hail or damaging wind events, GOES cloud-top temperatures and radar echo tops were warming rapidly, which indicated variability in the storm updraft that could have allowed the hail and wind gusts to reach the surface. Above-anvil cirrus plumes were another prominent indicator of impending severe weather. Detailed analysis of storms throughout the 2012 SRSOR period indicates that 57% of the plume-producing storms were severe and 85% of plumes from severe storms appeared before a severe weather report with an average lead time of 18 min, 9 min earlier than what would be observed by GOES operational scanning. JF - Weather and Forecasting AU - Bedka, Kristopher M AU - Wang, Cecilia AU - Rogers, Ryan AU - Carey, Lawrence D AU - Feltz, Wayne AU - Kanak, Jan AD - NASA Langley Research Center, Hampton, Virginia Y1 - 2015/06// PY - 2015 DA - June 2015 SP - 571 EP - 590 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 30 IS - 3 SN - 0882-8156, 0882-8156 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Convective storms/systems KW - Updrafts/downdrafts KW - Radars/Radar observations KW - Remote sensing KW - Satellite observations KW - Nowcasting KW - Prediction KW - Lightning KW - Indicators KW - Gusts KW - Updrafts KW - Storms KW - Severe storms KW - Plumes KW - Wind variability KW - Severe convective storm forecasting KW - Weather forecasting KW - Wind KW - Weather KW - Hail KW - Radar wind measurements KW - Radar cirrus cloud detection KW - Precipitation KW - Cooling KW - Clouds KW - Satellite data KW - Severe weather events KW - Convective activity KW - Radar KW - SW 5010:Network design KW - Q2 09393:Remote geosensing KW - M2 551.509.1/.5:Forecasting (551.509.1/.5) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1701475661?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Weather+and+Forecasting&rft.atitle=Examining+Deep+Convective+Cloud+Evolution+Using+Total+Lightning%2C+WSR-88D%2C+and+GOES-14+Super+Rapid+Scan+Datasets*&rft.au=Bedka%2C+Kristopher+M%3BWang%2C+Cecilia%3BRogers%2C+Ryan%3BCarey%2C+Lawrence+D%3BFeltz%2C+Wayne%3BKanak%2C+Jan&rft.aulast=Bedka&rft.aufirst=Kristopher&rft.date=2015-06-01&rft.volume=30&rft.issue=3&rft.spage=571&rft.isbn=&rft.btitle=&rft.title=Weather+and+Forecasting&rft.issn=08828156&rft_id=info:doi/10.1175%2FWAF-D-14-00062.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Number of references - 37 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Prediction; Hail; Lightning; Gusts; Weather forecasting; Radar wind measurements; Radar cirrus cloud detection; Precipitation; Storms; Updrafts; Clouds; Severe storms; Satellite data; Severe weather events; Radar; Convective activity; Severe convective storm forecasting; Wind variability; Weather; Indicators; Cooling; Plumes; Wind DO - http://dx.doi.org/10.1175/WAF-D-14-00062.1 ER - TY - JOUR T1 - Correction of Excessive Precipitation over Steep and High Mountains in a GCM: A Simple Method of Parameterizing the Thermal Effects of Subgrid Topographic Variation AN - 1701475605; PQ0001687552 AB - The excessive precipitation over steep and high mountains (EPSM) in GCMs and mesoscale models is due to a lack of parameterization of the thermal effects of subgrid-scale topographic variation. These thermal effects drive subgrid-scale heated-slope-induced vertical circulations (SHVC). SHVC provide a ventilation effect of removing heat from the boundary layer of resolvable-scale mountain slopes and depositing it higher up. The lack of SHVC parameterization is the cause of EPSM. The author has previously proposed a method of parameterizing SHVC, here termed SHVC.1. Although this has been successful in avoiding EPSM, the drawback is that it suppresses convective-type precipitation in the regions where it is applied. In this article, the author proposes a new method of parameterizing SHVC, here termed SHVC.2. In SHVC.2, the potential temperature and mixing ratio of the boundary layer are changed when used as input to the cumulus parameterization scheme over mountainous regions. This allows the cumulus parameterization to assume the additional function of SHVC parameterization. SHVC.2 has been tested in NASA Goddard's GEOS-5 GCM. It achieves the primary goal of avoiding EPSM while also avoiding the suppression of convective-type precipitation in the regions where it is applied. JF - Journal of the Atmospheric Sciences AU - Chao, Winston C AD - Global Modeling and Assimilation Office, NASA Goddard Space Flight Center, Greenbelt, Maryland Y1 - 2015/06// PY - 2015 DA - June 2015 SP - 2366 EP - 2378 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 72 IS - 6 SN - 0022-4928, 0022-4928 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Convective parameterization KW - General circulation models KW - Model errors KW - Parameterization KW - Ventilation KW - Atmospheric sciences KW - Boundary Layers KW - Topographic effects KW - Mesoscale features KW - Mixing KW - Mountains KW - Mixing ratio KW - Slopes KW - Temperature effects KW - Temperature KW - Atmospheric circulation KW - Precipitation KW - Model Studies KW - Clouds KW - Heat KW - Potential temperature KW - Boundary layers KW - Mountain regions KW - Mesoscale models KW - Vertical circulation KW - Q2 09242:Observations and measurements at sea KW - SW 0810:General KW - M2 551.509.1/.5:Forecasting (551.509.1/.5) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1701475605?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+Atmospheric+Sciences&rft.atitle=Correction+of+Excessive+Precipitation+over+Steep+and+High+Mountains+in+a+GCM%3A+A+Simple+Method+of+Parameterizing+the+Thermal+Effects+of+Subgrid+Topographic+Variation&rft.au=Chao%2C+Winston+C&rft.aulast=Chao&rft.aufirst=Winston&rft.date=2015-06-01&rft.volume=72&rft.issue=6&rft.spage=2366&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+Atmospheric+Sciences&rft.issn=00224928&rft_id=info:doi/10.1175%2FJAS-D-14-0336.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Number of references - 16 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Clouds; Temperature effects; Atmospheric sciences; Potential temperature; Boundary layers; Mixing ratio; Atmospheric circulation; Mesoscale features; Topographic effects; General circulation models; Mountain regions; Mesoscale models; Precipitation; Vertical circulation; Mountains; Ventilation; Heat; Temperature; Boundary Layers; Slopes; Mixing; Model Studies DO - http://dx.doi.org/10.1175/JAS-D-14-0336.1 ER - TY - JOUR T1 - Integration of model verification, validation, and calibration for uncertainty quantification in engineering systems AN - 1694970828; PQ0001595061 AB - This paper proposes a Bayesian methodology to integrate model verification, validation, and calibration activities for the purpose of overall uncertainty quantification in different types of engineering systems. The methodology is first developed for single-level models, and then extended to systems that are studied using multi-level models that interact with each other. Two types of interactions amongst multi-level models are considered: (1) Type-I, where the output of a lower-level model (component and/or subsystem) becomes an input to a higher level system model, and (2) Type-II, where parameters of the system model are inferred using lower-level models and tests (that describe simplified components and/or isolated physics). The various models, their inputs, parameters, and outputs, experimental data, and various sources of model error are connected through a Bayesian network. The results of calibration, verification, and validation with respect to each individual model are integrated using the principles of conditional probability and total probability, and propagated through the Bayesian network in order to quantify the overall system-level prediction uncertainty. The proposed methodology is illustrated with numerical examples that deal with heat conduction and structural dynamics. JF - Reliability Engineering & System Safety AU - Sankararaman, Shankar AU - Mahadevan, Sankaran AD - SGT Inc., NASA Ames Research Center, Moffett Field, CA 94035, United States, shankar.sankararaman@nasa.gov Y1 - 2015/06// PY - 2015 DA - Jun 2015 SP - 194 EP - 209 PB - Elsevier B.V., The Boulevard Kidlington Oxford OX5 1GB United Kingdom VL - 138 SN - 0951-8320, 0951-8320 KW - Health & Safety Science Abstracts KW - Multi-level system KW - Uncertainty quantification KW - Bayesian network KW - Calibration KW - Validation KW - Verification KW - Prediction KW - Safety engineering KW - Safety KW - H 0500:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1694970828?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ahealthsafetyabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Reliability+Engineering+%26+System+Safety&rft.atitle=Integration+of+model+verification%2C+validation%2C+and+calibration+for+uncertainty+quantification+in+engineering+systems&rft.au=Sankararaman%2C+Shankar%3BMahadevan%2C+Sankaran&rft.aulast=Sankararaman&rft.aufirst=Shankar&rft.date=2015-06-01&rft.volume=138&rft.issue=&rft.spage=194&rft.isbn=&rft.btitle=&rft.title=Reliability+Engineering+%26+System+Safety&rft.issn=09518320&rft_id=info:doi/10.1016%2Fj.ress.2015.01.023 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-07-01 N1 - Last updated - 2015-07-23 N1 - SubjectsTermNotLitGenreText - Prediction; Safety engineering; Safety DO - http://dx.doi.org/10.1016/j.ress.2015.01.023 ER - TY - JOUR T1 - Fayalite oxidation processes in Obsidian Cliffs rhyolite flow, Oregon AN - 1692745874; 2015-065518 AB - This study investigates the oxidation of fayalite Fe (sub 2) (super 2+) SiO (sub 4) that is present in lithophysae from a rhyolite flow (Obsidian Cliffs, Oregon). Textural, chemical, and structural analyses of the successive oxidation zones are used to constrain: (1) the oxidation processes of olivine, and (2) the role of temperature, chemical diffusion, and meteoric infiltration. Petrologic analyses and thermodynamic modeling show that the rhyolite flow emplaced at 800-950 degrees C. Fayalite-bearing lithophysae formed only in the core of the lava flow. Variations in the gas composition inside the lithophysae induced the oxidation of fayalite to a laihunite-1M zone Fe (sub 1) (super 2+) Fe (sub 2) (super 3+) (sub 1) (SiO (sub 4) ) (sub 2) . This zone is made of nano-lamellae of amorphous silica SiO (sub 2) and laihunite-3M Fe (super 2+) (sub 1.6) Fe (super 3+) (sub 1.6) (sub 0.8) (SiO (sub 4) ) (sub 2) + hematite Fe (sub 2) O (sub 3) . It probably formed by a nucleation and growth process in the fayalite fractures and defects and at fayalite crystal edges. The laihunite-1M zone then oxidized into an "oxyfayalite" zone with the composition Fe (super 2+) (sub 0.52) Fe (super 3+) (sub 2.32) (sub 1.16) (SiO (sub 4) ) (sub 2) . This second oxidation zone is made of lamellae of amorphous silica SiO (sub 2) and hematite Fe (sub 2) O (sub 3) , with a possible small amount of ferrosilite Fe (super 2+) SiO (sub 3) . A third and outer zone, composed exclusively of hematite, is also present. The successive oxidation zones suggest that there may be a mineral in the olivine group with higher Fe (super 3+) content than laihunite-1M. The transformation of laihunite-1M to this "oxyfayalite" phase could occur by a reaction such as 0.24Fe (super 2+) (sub M1) laihunite (super -1M) (sub +0.06O2) =0.16Fe (super 3+) (sub M1) "oxyfayalite"+0 08[]"oxyfayalite"+0.04 Fe (super 3+) (sub 2) O (sub 3) hematite. This would imply that Fe (super 3+) can also be incorporated in the M1 site of olivine. JF - American Mineralogist AU - Martin, Audrey M AU - Medard, Etienne AU - Devouard, Bertrand AU - Keller, Lindsay P AU - Righter, Kevin AU - Devidal, Jean-Luc AU - Rahman, Zia Y1 - 2015/06// PY - 2015 DA - June 2015 SP - 1153 EP - 1164 PB - Mineralogical Society of America, Washington, DC VL - 100 IS - 5-6 SN - 0003-004X, 0003-004X KW - United States KW - silicates KW - milarite group KW - volcanic rocks KW - igneous rocks KW - ring silicates KW - laihunite KW - osumilite KW - olivine group KW - iron KW - Oregon KW - Lane County Oregon KW - chemical reactions KW - hematite KW - fayalite KW - orthosilicates KW - oxides KW - rhyolites KW - oxyfayalite KW - Obsidian Cliffs KW - lava flows KW - oxidation KW - electron microscopy data KW - TEM data KW - nesosilicates KW - metals KW - exsolution KW - formula KW - 01B:Mineralogy of silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692745874?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Mineralogist&rft.atitle=Fayalite+oxidation+processes+in+Obsidian+Cliffs+rhyolite+flow%2C+Oregon&rft.au=Martin%2C+Audrey+M%3BMedard%2C+Etienne%3BDevouard%2C+Bertrand%3BKeller%2C+Lindsay+P%3BRighter%2C+Kevin%3BDevidal%2C+Jean-Luc%3BRahman%2C+Zia&rft.aulast=Martin&rft.aufirst=Audrey&rft.date=2015-06-01&rft.volume=100&rft.issue=5-6&rft.spage=1153&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam-2015-5042 L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2015-01-01 N1 - Number of references - 73 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2015-07-02 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - chemical reactions; electron microscopy data; exsolution; fayalite; formula; hematite; igneous rocks; iron; laihunite; Lane County Oregon; lava flows; metals; milarite group; nesosilicates; Obsidian Cliffs; olivine group; Oregon; orthosilicates; osumilite; oxidation; oxides; oxyfayalite; rhyolites; ring silicates; silicates; TEM data; United States; volcanic rocks DO - http://dx.doi.org/10.2138/am-2015-5042 ER - TY - JOUR T1 - Modeling siderophile elements during core formation and accretion, and the role of the deep mantle and volatiles AN - 1692745437; 2015-065514 AB - The last decade has seen general agreement that moderately siderophile elements (MSE) in Earth's primitive upper mantle (PUM) can be explained by metal-silicate equilibrium at mid-mantle depths in an early Earth magma ocean environment. Despite the agreement, there are some differences in the detailed modeling that has been carried out. This paper will examine siderophile element metal/silicate partitioning with respect to three different topics: (1) an examination of aspects of the modeling that one might suspect leads to differences in outcomes or in comparison between models, but actually are in agreement with experimental data and between models; (2) a discussion of the role of the deep mantle in modeling efforts; and (3) the role and/or fate of volatiles in magma ocean scenarios with an emphasis on where data are lacking. JF - American Mineralogist AU - Righter, Kevin Y1 - 2015/06// PY - 2015 DA - June 2015 SP - 1098 EP - 1109 PB - Mineralogical Society of America, Washington, DC VL - 100 IS - 5-6 SN - 0003-004X, 0003-004X KW - interior KW - magma oceans KW - Earth KW - accretion KW - oxygen KW - numerical models KW - asteroids KW - Moon KW - mantle KW - Mars KW - siderophile elements KW - equations KW - fugacity KW - terrestrial planets KW - lower mantle KW - planets KW - volatiles KW - planetary interiors KW - interplanetary comparison KW - core KW - 18:Solid-earth geophysics KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692745437?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Mineralogist&rft.atitle=Modeling+siderophile+elements+during+core+formation+and+accretion%2C+and+the+role+of+the+deep+mantle+and+volatiles&rft.au=Righter%2C+Kevin&rft.aulast=Righter&rft.aufirst=Kevin&rft.date=2015-06-01&rft.volume=100&rft.issue=5-6&rft.spage=1098&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam-2015-5052 L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2015-01-01 N1 - Number of references - 113 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2015-07-02 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - accretion; asteroids; core; Earth; equations; fugacity; interior; interplanetary comparison; lower mantle; magma oceans; mantle; Mars; Moon; numerical models; oxygen; planetary interiors; planets; siderophile elements; terrestrial planets; volatiles DO - http://dx.doi.org/10.2138/am-2015-5052 ER - TY - NEWS T1 - Roundworms have the Right Stuff AN - 1684253190 JF - UPI Space Daily AU - Rachel Molina for NASA Science News Y1 - 2015/05/31/ PY - 2015 DA - 2015 May 31 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684253190?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=Roundworms+have+the+Right+Stuff&rft.au=Rachel+Molina+for+NASA+Science+News&rft.aulast=Rachel+Molina+for+NASA+Science+News&rft.aufirst=&rft.date=2015-05-31&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-05-31 ER - TY - CPAPER T1 - Ancient bacteria: Pre-Cambrian Fossils and the Earliest Life on Earth T2 - 115th General Meeting of the American Society for Microbiology (ASM 2015) AN - 1658699103; 6336115 JF - 115th General Meeting of the American Society for Microbiology (ASM 2015) AU - Allwood, Abigail Y1 - 2015/05/30/ PY - 2015 DA - 2015 May 30 KW - Fossils UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658699103?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=115th+General+Meeting+of+the+American+Society+for+Microbiology+%28ASM+2015%29&rft.atitle=Ancient+bacteria%3A+Pre-Cambrian+Fossils+and+the+Earliest+Life+on+Earth&rft.au=Allwood%2C+Abigail&rft.aulast=Allwood&rft.aufirst=Abigail&rft.date=2015-05-30&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=115th+General+Meeting+of+the+American+Society+for+Microbiology+%28ASM+2015%29&rft.issn=&rft_id=info:doi/ L2 - http://www.abstractsonline.com/plan/start.aspx?mkey={224BAD71-94EA-4FA5-8DF3-F4087BDC3625} LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - JOUR T1 - Coseismic compression/dilatation and viscoelastic uplift/subsidence following the 2012 Indian Ocean earthquakes quantified from satellite gravity observations AN - 1793205093; 2016-048521 AB - The 2012 Indian Ocean earthquake sequence (M (sub w) 8.6, 8.2) is a rare example of great strike-slip earthquakes in an intraoceanic setting. With over a decade of Gravity Recovery and Climate Experiment (GRACE) data, we were able to measure and model the unanticipated large coseismic and postseismic gravity changes of these events. Using the approach of normal mode decomposition and spatial localization, we computed the gravity changes corresponding to five moment tensor components. Our analysis revealed that the gravity changes are produced predominantly by coseismic compression and dilatation within the oceanic crust and upper mantle and by postseismic vertical motion. Our results suggest that the postseismic positive gravity and the postseismic uplift measured with GPS within the coseismic compressional quadrant are best fit by ongoing uplift associated with viscoelastic mantle relaxation. Our study demonstrates that the GRACE data are suitable for analyzing strike-slip earthquakes as small as M (sub w) 8.2 with the noise characteristics of this region. Abstract Copyright (2015), . American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Han, Shin-Chan AU - Sauber, Jeanne AU - Pollitz, Fred Y1 - 2015/05/28/ PY - 2015 DA - 2015 May 28 SP - 3764 EP - 3772 PB - American Geophysical Union, Washington, DC VL - 42 IS - 10 SN - 0094-8276, 0094-8276 KW - risk management KW - geologic hazards KW - uplifts KW - GRACE KW - subsidence KW - Indian Ocean earthquake 2012 KW - strike-slip faults KW - satellite methods KW - viscoelasticity KW - coseismic processes KW - Indian Ocean KW - seismicity KW - seismic risk KW - natural hazards KW - risk assessment KW - tectonics KW - compression KW - earthquakes KW - seismotectonics KW - faults KW - remote sensing KW - 19:Seismology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1793205093?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=Coseismic+compression%2Fdilatation+and+viscoelastic+uplift%2Fsubsidence+following+the+2012+Indian+Ocean+earthquakes+quantified+from+satellite+gravity+observations&rft.au=Han%2C+Shin-Chan%3BSauber%2C+Jeanne%3BPollitz%2C+Fred&rft.aulast=Han&rft.aufirst=Shin-Chan&rft.date=2015-05-28&rft.volume=42&rft.issue=10&rft.spage=3764&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL063819 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 30 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2016-06-02 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - compression; coseismic processes; earthquakes; faults; geologic hazards; GRACE; Indian Ocean; Indian Ocean earthquake 2012; natural hazards; remote sensing; risk assessment; risk management; satellite methods; seismic risk; seismicity; seismotectonics; strike-slip faults; subsidence; tectonics; uplifts; viscoelasticity DO - http://dx.doi.org/10.1002/2015GL063819 ER - TY - NEWS T1 - The First Martian Marathon AN - 1682754335 JF - UPI Space Daily AU - Dr. Tony Phillips for NASA Science News Y1 - 2015/05/24/ PY - 2015 DA - 2015 May 24 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1682754335?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=The+First+Martian+Marathon&rft.au=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2015-05-24&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-05-24 ER - TY - JOUR T1 - Low-altitude magnetic field measurements by MESSENGER reveal Mercury's ancient crustal field AN - 1703691466; 2015-076428 AB - Magnetized rocks can record the history of the magnetic field of a planet, a key constraint for understanding its evolution. From orbital vector magnetic field measurements of Mercury taken by the MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) spacecraft at altitudes below 150 kilometers, we have detected remanent magnetization in Mercury's crust. We infer a lower bound on the average age of magnetization of 3.7 to 3.9 billion years. Our findings indicate that a global magnetic field driven by dynamo processes in the fluid outer core operated early in Mercury's history. Ancient field strengths that range from those similar to Mercury's present dipole field to Earth-like values are consistent with the magnetic field observations and with the low iron content of Mercury's crust inferred from MESSENGER elemental composition data. JF - Science AU - Johnson, Catherine L AU - Phillips, Roger J AU - Purucker, Michael E AU - Anderson, Brian J AU - Byrne, Paul K AU - Denevi, Brett W AU - Feinberg, Joshua M AU - Hauck, Steven A, II AU - Head, James W, III AU - Korth, Haje AU - James, Peter B AU - Mazarico, Erwan AU - Neumann, Gregory A AU - Philpott, Lydia C AU - Siegler, Matthew A AU - Tsyganenko, Nikolai A AU - Solomon, Sean C Y1 - 2015/05/22/ PY - 2015 DA - 2015 May 22 SP - 892 EP - 895 PB - American Association for the Advancement of Science, Washington, DC VL - 348 IS - 6237 SN - 0036-8075, 0036-8075 KW - Suisei Planitia KW - dynamos KW - thermal properties KW - magnetic field KW - variations KW - magnetic properties KW - thermal gradient KW - terrestrial planets KW - planets KW - planetary interiors KW - Mercury Planet KW - MESSENGER Mission KW - crust KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703691466?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science&rft.atitle=Low-altitude+magnetic+field+measurements+by+MESSENGER+reveal+Mercury%27s+ancient+crustal+field&rft.au=Johnson%2C+Catherine+L%3BPhillips%2C+Roger+J%3BPurucker%2C+Michael+E%3BAnderson%2C+Brian+J%3BByrne%2C+Paul+K%3BDenevi%2C+Brett+W%3BFeinberg%2C+Joshua+M%3BHauck%2C+Steven+A%2C+II%3BHead%2C+James+W%2C+III%3BKorth%2C+Haje%3BJames%2C+Peter+B%3BMazarico%2C+Erwan%3BNeumann%2C+Gregory+A%3BPhilpott%2C+Lydia+C%3BSiegler%2C+Matthew+A%3BTsyganenko%2C+Nikolai+A%3BSolomon%2C+Sean+C&rft.aulast=Johnson&rft.aufirst=Catherine&rft.date=2015-05-22&rft.volume=348&rft.issue=6237&rft.spage=892&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.aaa8720 L2 - http://www.sciencemag.org/magazine LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 30 N1 - PubXState - DC N1 - Document feature - illus. incl. geol. sketch maps N1 - Last updated - 2015-08-13 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - crust; dynamos; magnetic field; magnetic properties; Mercury Planet; MESSENGER Mission; planetary interiors; planets; Suisei Planitia; terrestrial planets; thermal gradient; thermal properties; variations DO - http://dx.doi.org/10.1126/science.aaa8720 ER - TY - JOUR T1 - Toward the formation of carbonaceous refractory matter in high temperature hydrocarbon-rich atmospheres of exoplanets upon micrometeoroid impact AN - 1832609993; 741336-76 AB - We report on laboratory simulation experiments mimicking the chemical processing of model atmospheres of exoplanets containing C3 and C4 hydrocarbons at moderate temperatures of 400 K upon interaction of catalytic surfaces of micrometeoroids. By utilizing an ultrasonic levitator device and heating singly levitated particles under simulated microgravity conditions, Raman spectroscopy is utilized as a non-invasive tool to probe on line and in situ the conversion of C3 and C4 hydrocarbons to refractory carbonaceous matter on the surfaces of levitated particles. Secondary Ion Mass Spectrometry and electron microscopic imaging were also conducted to gain further insight into the elementary composition and structures of the refractories formed. Our results provide compelling evidence that in the presence of a catalytic surface, which can be supplied in the form of micrometeoroids and atmospheric dust particles, hydrocarbon gases present in the atmospheres of exoplanets can be converted to refractory, carbon-rich carbonaceous matter of mainly graphitic structure with a carbon content of at least 90% at elevated temperatures. This finding might explain the low methane to carbon monoxide (CH (sub 4) -CO) ratio in the hot Neptune GJ 436b, where the abundant methane photochemically converts to higher order hydrocarbons and ultimately to refractory graphite-like carbon in the presence of a silicon surface. Copyright (Copyright) 2015. The American Astronomical Society. All rights reserved. JF - The Astrophysical Journal AU - Dangi, Beni B AU - Kim, Yong S AU - Krasnokutski, Serge A AU - Kaiser, Ralf I AU - Bauschlicher, Charles W, Jr Y1 - 2015/05/20/ PY - 2015 DA - 2015 May 20 EP - Paper no. 76 PB - IOP Publishing for American Astronomical Society, Bristol VL - 805 IS - 1 SN - 0004-637X, 0004-637X KW - refractory materials KW - aliphatic hydrocarbons KW - simulation KW - temperature KW - meteorites KW - laboratory studies KW - electromagnetic radiation KW - carbon KW - spectra KW - carbonaceous composition KW - experimental studies KW - methane KW - extrasolar planets KW - photochemistry KW - atmosphere KW - electron microscopy data KW - native elements KW - alkanes KW - impacts KW - ultraviolet radiation KW - planets KW - micrometeorites KW - graphite KW - carbon monoxide KW - organic compounds KW - Raman spectra KW - hydrocarbons KW - high temperature KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832609993?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Astrophysical+Journal&rft.atitle=Toward+the+formation+of+carbonaceous+refractory+matter+in+high+temperature+hydrocarbon-rich+atmospheres+of+exoplanets+upon+micrometeoroid+impact&rft.au=Dangi%2C+Beni+B%3BKim%2C+Yong+S%3BKrasnokutski%2C+Serge+A%3BKaiser%2C+Ralf+I%3BBauschlicher%2C+Charles+W%2C+Jr&rft.aulast=Dangi&rft.aufirst=Beni&rft.date=2015-05-20&rft.volume=805&rft.issue=1&rft.spage=&rft.isbn=&rft.btitle=&rft.title=The+Astrophysical+Journal&rft.issn=0004637X&rft_id=info:doi/10.1088%2F0004-637X%2F805%2F1%2F76 L2 - http://iopscience.iop.org/0004-637X LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data supplied by IOP Publishing Ltd., London, United Kingdom N1 - Number of references - 44 N1 - Document feature - illus. N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; atmosphere; carbon; carbon monoxide; carbonaceous composition; electromagnetic radiation; electron microscopy data; experimental studies; extrasolar planets; graphite; high temperature; hydrocarbons; impacts; laboratory studies; meteorites; methane; micrometeorites; native elements; organic compounds; photochemistry; planets; Raman spectra; refractory materials; simulation; spectra; temperature; ultraviolet radiation DO - http://dx.doi.org/10.1088/0004-637X/805/1/76 ER - TY - NEWS T1 - Auroras on Mars AN - 1681891674 JF - UPI Space Daily AU - Dr. Tony Phillips for NASA Science News Y1 - 2015/05/20/ PY - 2015 DA - 2015 May 20 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1681891674?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=Auroras+on+Mars&rft.au=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2015-05-20&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-05-20 ER - TY - NEWS T1 - NASA Satellite Data Helps Protect Endangered Whales AN - 1681397504 JF - UPI Space Daily AU - Ellen Gray NASA's Earth Science News Y1 - 2015/05/19/ PY - 2015 DA - 2015 May 19 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1681397504?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=NASA+Satellite+Data+Helps+Protect+Endangered+Whales&rft.au=Ellen+Gray+NASA%27s+Earth+Science+News&rft.aulast=Ellen+Gray+NASA%27s+Earth+Science+News&rft.aufirst=&rft.date=2015-05-19&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-05-19 ER - TY - CPAPER T1 - Acoustic Characterization of Micro-Perforate Porous Plates T2 - 169th Meeting of the Acoustical Society of America AN - 1669822472; 6341953 JF - 169th Meeting of the Acoustical Society of America AU - Brown, Martha AU - Jones, Michael AU - Howerton, Brian Y1 - 2015/05/18/ PY - 2015 DA - 2015 May 18 KW - Acoustics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1669822472?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=169th+Meeting+of+the+Acoustical+Society+of+America&rft.atitle=Acoustic+Characterization+of+Micro-Perforate+Porous+Plates&rft.au=Brown%2C+Martha%3BJones%2C+Michael%3BHowerton%2C+Brian&rft.aulast=Brown&rft.aufirst=Martha&rft.date=2015-05-18&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=169th+Meeting+of+the+Acoustical+Society+of+America&rft.issn=&rft_id=info:doi/ L2 - https://asa2015spring.abstractcentral.com/planner.jsp LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-03-31 N1 - Last updated - 2015-04-06 ER - TY - JOUR T1 - Spillage of lunar polar crater volatiles onto adjacent terrains; the case for dynamic processes AN - 1729845750; 2015-102298 AB - We present an investigation of the release and transport of lunar polar crater volatiles onto topside regions surrounding the cold traps. The volatiles are liberated via surface energization processes associated with the harsh space environment, including solar wind plasma sputtering and impact vaporization. We find that some fraction of these volatiles can migrate from crater floors onto topside regions (those regions directly adjacent to and above the polar crater floors), and that these surrounding terrains should contain a sampling of the material originating within the crater itself. It is concluded that the nature of the volatile content on crater floors can be obtained by sampling the surface volatiles that have migrated or "spilled out" onto the adjacent terrain. This "spillage" effect could make human or robotic prospecting for crater resources significantly easier, since an assessment may not require direct entry into the very harsh polar crater environment. We also suggest that there are dynamic processes actively operating on the crater floors, and we estimate their source rates assuming dynamic equilibrium of the observed water frost and our modeled loss rates. Abstract Copyright (2015), . The Authors. JF - Geophysical Research Letters AU - Farrell, W M AU - Hurley, D M AU - Zimmerman, M I Y1 - 2015/05/16/ PY - 2015 DA - 2015 May 16 SP - 3160 EP - 3165 PB - American Geophysical Union, Washington, DC VL - 42 IS - 9 SN - 0094-8276, 0094-8276 KW - water KW - hydration KW - volatiles KW - craters KW - Moon KW - surface features KW - water vapor KW - chemical composition KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1729845750?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=South+China+Morning+Post+%281903-1941%29&rft.atitle=SATURDAY%27S+TELEGRAMS%3A+THE+COAL+CRISIS+%22PRACTICALLY+CIVIL+WAR.%22+ARMY+AND+NAVY+RESERVES+CALLED+UP+LONDON%2C+APRIL+8&rft.au=&rft.aulast=&rft.aufirst=&rft.date=1921-04-11&rft.volume=&rft.issue=&rft.spage=8&rft.isbn=&rft.btitle=&rft.title=South+China+Morning+Post+%281903-1941%29&rft.issn=&rft_id=info:doi/ L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 22 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2015-11-05 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - chemical composition; craters; hydration; Moon; surface features; volatiles; water; water vapor DO - http://dx.doi.org/10.1002/2015GL063200 ER - TY - JOUR T1 - Simulated recovery of Europa's global shape and tidal Love numbers from altimetry and radio tracking during a dedicated flyby tour AN - 1729843267; 2015-102299 AB - The fundamental scientific objectives for future spacecraft exploration of Jupiter's moon Europa include confirmation of the existence of subsurface ocean beneath the surface ice shell and constraints on the physical properties of the ocean. Here we conduct a comprehensive simulation of a multiple-flyby mission. We demonstrate that radio tracking data can provide an estimate of the gravitational tidal Love number k (sub 2) with sufficient precision to confirm the presence of a liquid layer. We further show that a capable long-range laser altimeter can improve determination of the spacecraft position, improve the k (sub 2) determination (<1% error), and enable the estimation of the planetary shape and Love number h (sub 2) (3-4% error), which is directly related to the amplitude of the surface tidal deformation. These measurements, in addition to the global shape accurately constrained by the long altimetric profiles, can yield further constraints on the interior structure of Europa. Abstract Copyright (2015), . American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Mazarico, Erwan AU - Genova, Antonio AU - Neumann, Gregory A AU - Smith, David E AU - Zuber, Maria T Y1 - 2015/05/16/ PY - 2015 DA - 2015 May 16 SP - 3166 EP - 3173 PB - American Geophysical Union, Washington, DC VL - 42 IS - 9 SN - 0094-8276, 0094-8276 KW - icy satellites KW - laser methods KW - Europa Satellite KW - Jupiter KW - ice cover KW - altimetry KW - Galilean satellites KW - giant planets KW - planets KW - Love number KW - ice KW - outer planets KW - satellites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1729843267?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=Simulated+recovery+of+Europa%27s+global+shape+and+tidal+Love+numbers+from+altimetry+and+radio+tracking+during+a+dedicated+flyby+tour&rft.au=Mazarico%2C+Erwan%3BGenova%2C+Antonio%3BNeumann%2C+Gregory+A%3BSmith%2C+David+E%3BZuber%2C+Maria+T&rft.aulast=Mazarico&rft.aufirst=Erwan&rft.date=2015-05-16&rft.volume=42&rft.issue=9&rft.spage=3166&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL063224 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 30 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2015-11-05 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - altimetry; Europa Satellite; Galilean satellites; giant planets; ice; ice cover; icy satellites; Jupiter; laser methods; Love number; outer planets; planets; satellites DO - http://dx.doi.org/10.1002/2015GL063224 ER - TY - JOUR T1 - Combined structural and compositional evolution of planetary rings due to micrometeoroid impacts and ballistic transport AN - 1692746904; 2015-063875 AB - We introduce improved numerical techniques for simulating the structural and compositional evolution of planetary rings due to micrometeoroid bombardment and subsequent ballistic transport of impact ejecta. Our current, robust code is capable of modeling structural changes and pollution transport simultaneously over long times on both local and global scales. In this paper, we describe the methodology based on the original structural code of Durisen et al. (Durisen, R.H. et al. [1989]. Icarus 80, 136-166) and on the pollution transport code of Cuzzi and Estrada (Cuzzi, J.N., Estrada, P.R. [1998]. Icarus 132, 1-35). We provide demonstrative simulations to compare with, and extend upon previous work, as well as examples of how ballistic transport can maintain the observed structure in Saturn's rings using available Cassini occultation optical depth data. In particular, we explicitly verify the claim that the inner B (and presumably A) ring edge can be maintained over long periods of time due to an ejecta distribution that is heavily biased in the prograde direction through a balance between the sharpening effects of ballistic transport and the broadening effects of viscosity. We also see that a "ramp"-like feature forms over time just inside that edge. However, it does not remain linear for the duration of the runs presented here unless a less steep ejecta velocity distribution is adopted. We also model the C ring plateaus and find that their outer edges can be maintained at their observed sharpness for long periods due to ballistic transport. We hypothesize that the addition of a significant component of a retrograde-biased ejecta distribution may help explain the linearity of the ramp and could provide a mechanism for maintaining the sharpness of C ring plateau inner edges. This component would arise for the subset of micrometeoroid impacts which are destructive rather than merely cratering. Such a distribution will be introduced in future work. JF - Icarus AU - Estrada, Paul R AU - Durisen, Richard H AU - Cuzzi, Jeffrey N AU - Morgan, Demitri A Y1 - 2015/05/15/ PY - 2015 DA - 2015 May 15 SP - 415 EP - 439 PB - Elsevier, New York, NY VL - 252 SN - 0019-1035, 0019-1035 KW - ballistics KW - numerical models KW - meteoroids KW - impacts KW - ejecta KW - distribution KW - giant planets KW - Saturn KW - planets KW - planetary rings KW - micrometeoroids KW - viscosity KW - transport KW - outer planets KW - optical depth KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692746904?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Combined+structural+and+compositional+evolution+of+planetary+rings+due+to+micrometeoroid+impacts+and+ballistic+transport&rft.au=Estrada%2C+Paul+R%3BDurisen%2C+Richard+H%3BCuzzi%2C+Jeffrey+N%3BMorgan%2C+Demitri+A&rft.aulast=Estrada&rft.aufirst=Paul&rft.date=2015-05-15&rft.volume=252&rft.issue=&rft.spage=415&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.02.005 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 78 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-07-02 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - ballistics; distribution; ejecta; giant planets; impacts; meteoroids; micrometeoroids; numerical models; optical depth; outer planets; planetary rings; planets; Saturn; transport; viscosity DO - http://dx.doi.org/10.1016/j.icarus.2015.02.005 ER - TY - JOUR T1 - The composition of "ultra-red" TNOs and Centaurs AN - 1692745678; 2015-063868 AB - We present an analysis of the colors available for seven trans-neptunian objects (TNOs) and three centaurs among the reddest known, aimed at characterizing their surface chemical properties. In particular we seek to obtain evidence in support of the proposed correlation between the visible coloration of the surface of TNOs and their surface compositions (Brown, M.E., Schaller, E.L., Fraser, W.C. [2011]. Astrophys. J. 739, L60). The analysis focuses on nine available colors in the visible-near IR (0.3-4.5 mu m) spectral range scaled to the V albedo to provide a proxy for the spectral shape of the objects. The colors include Spitzer IRAC data never published before, key in providing an effective constraint in the discrimination of ices contributing to the surface composition of the objects. Compositions are obtained by comparing the data to a grid of radiative transfer models convolved by the filter response functions of the colors adopted in the spectrum-proxies to match the resolution of the observations. We find evidence suggesting the presence of hydrocarbons and/or methanol on the surfaces of most objects in our sample, supporting the hypothesis by Brown et al. (Brown, M.E., Schaller, E.L., Fraser, W.C. [2011]. Astrophys. J. 739, L60) that the coloration of red TNOs could be linked to their methanol content. From our finding of methanol/hydrocarbon ices on the surfaces of the objects in our sample of very red TNOs and centaurs we infer that ultra-red objects in general might contain these ices and therefore might have formed in the outer part of the Solar System. We also deduce that the surfaces of most of the very red TNOs in our dataset are probably still quite pristine, and that their organic materials could have been produced by irradiation of the volatile ices whose traces are still present on their surface. Although our sample is small, we infer that the irradiation process is still in progress, as hinted by the centaurs' slightly elevated organic amounts at smaller perihelion distances. However, considering the relatively similar amounts of organics found in our data at a wide variety of perihelion distances, we also infer that it could have started before Neptune's migration. The technique used to constrain the composition described as part of this study introduces a new approach at investigating the surface chemistry of the very small and numerous objects that constitute the bulk of the TNO and centaur populations. This innovative method has the potential to provide constraints for irradiation theories and for models of dynamical and chemical evolution of the Solar System. JF - Icarus AU - Dalle Ore, C Morea AU - Barucci, M A AU - Emery, J P AU - Cruikshank, D P AU - de Bergh, C AU - Roush, T L AU - Perma, D AU - Merlin, F AU - Dalle Ore, L V Y1 - 2015/05/15/ PY - 2015 DA - 2015 May 15 SP - 311 EP - 326 PB - Elsevier, New York, NY VL - 252 SN - 0019-1035, 0019-1035 KW - irradiation KW - optical spectra KW - trans-Neptunian objects KW - methanol KW - infrared spectra KW - models KW - volatiles KW - photometry KW - organic compounds KW - centaurs KW - chemical reactions KW - color KW - ice KW - hydrocarbons KW - chemical properties KW - alcohols KW - spectra KW - radiative transfer KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692745678?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=The+composition+of+%22ultra-red%22+TNOs+and+Centaurs&rft.au=Dalle+Ore%2C+C+Morea%3BBarucci%2C+M+A%3BEmery%2C+J+P%3BCruikshank%2C+D+P%3Bde+Bergh%2C+C%3BRoush%2C+T+L%3BPerma%2C+D%3BMerlin%2C+F%3BDalle+Ore%2C+L+V&rft.aulast=Dalle+Ore&rft.aufirst=C&rft.date=2015-05-15&rft.volume=252&rft.issue=&rft.spage=311&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.01.014 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 138 N1 - PubXState - NY N1 - Document feature - illus. incl. 5 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-11-19 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - alcohols; centaurs; chemical properties; chemical reactions; color; hydrocarbons; ice; infrared spectra; irradiation; methanol; models; optical spectra; organic compounds; photometry; radiative transfer; spectra; trans-Neptunian objects; volatiles DO - http://dx.doi.org/10.1016/j.icarus.2015.01.014 ER - TY - JOUR T1 - The radiation stability of glycine in solid CO (sub 2) ; in situ laboratory measurements with applications to Mars AN - 1692745208; 2015-063878 AB - The detection of biologically important, organic molecules on Mars is an important goal that may soon be reached. However, the current small number of organic detections at the martian surface may be due to the harsh UV and radiation conditions there. It seems likely that a successful search will require probing the subsurface of Mars, where penetrating cosmic rays and solar energetic particles dominate the radiation environment, with an influence that weakens with depth. Toward the goal of understanding the survival of organic molecules in cold radiation-rich environments on Mars, we present new kinetics data on the radiolytic destruction of glycine diluted in frozen carbon dioxide. Rate constants were measured in situ with infrared spectroscopy, without additional sample manipulation, for irradiations at 25, 50, and 75 K with 0.8-MeV protons. The resulting half-lives for glycine in CO (sub 2) -ice are compared to previous results for glycine in H (sub 2) O-ice and show that glycine in CO (sub 2) -ice is much less stable in a radiation environment, with destruction rate constants approximately 20-40 times higher than glycine in H (sub 2) O-ice. Extrapolation of these results to conditions in the martian subsurface results in half-lives estimated to be less than 100-200 Myr even at depths of a few meters. JF - Icarus AU - Gerakines, Perry A AU - Hudson, Reggie L Y1 - 2015/05/15/ PY - 2015 DA - 2015 May 15 SP - 466 EP - 472 PB - Elsevier, New York, NY VL - 252 SN - 0019-1035, 0019-1035 KW - irradiation KW - stability KW - astrobiology KW - Mars KW - infrared spectra KW - carbon dioxide KW - laboratory studies KW - electromagnetic radiation KW - ice KW - background radiation KW - amino acids KW - cosmic rays KW - spectra KW - water KW - glycine KW - biomarkers KW - depth KW - ultraviolet radiation KW - terrestrial planets KW - solid phase KW - planets KW - organic compounds KW - organic acids KW - detection KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692745208?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=The+radiation+stability+of+glycine+in+solid+CO+%28sub+2%29+%3B+in+situ+laboratory+measurements+with+applications+to+Mars&rft.au=Gerakines%2C+Perry+A%3BHudson%2C+Reggie+L&rft.aulast=Gerakines&rft.aufirst=Perry&rft.date=2015-05-15&rft.volume=252&rft.issue=&rft.spage=466&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.02.008 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 30 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2015-07-02 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - amino acids; astrobiology; background radiation; biomarkers; carbon dioxide; cosmic rays; depth; detection; electromagnetic radiation; glycine; ice; infrared spectra; irradiation; laboratory studies; Mars; organic acids; organic compounds; planets; solid phase; spectra; stability; terrestrial planets; ultraviolet radiation; water DO - http://dx.doi.org/10.1016/j.icarus.2015.02.008 ER - TY - JOUR T1 - New crater on the Moon and a swarm of secondaries AN - 1692743396; 2015-063863 AB - Lunar Reconnaissance Orbiter Camera images acquired both before and after the formation of an 18.8 m diameter crater on 17 March 2013 reveal intricate details of ejecta distribution and the structure of the top two meters of the regolith. Our observations indicate that (1) the regolith is mature down to several tens of cm and immature below one meter, (2) surface reflectivity properties are affected for distances greater than fifty crater radii, and (3) large numbers of secondary impacts (splotches) formed up to 30 km distant from this new primary crater. These observations provide new knowledge of the distribution of ejected materials from small impact craters on the Moon, the modification of the top few cm of the regolith by micrometeorite impacts, and potential hazards to future explorers. JF - Icarus AU - Robinson, Mark S AU - Boyd, Aaron K AU - Denevi, Brett W AU - Lawrence, Samuel J AU - McEwen, Alfred S AU - Moser, Danielle E AU - Povilaitis, Reinhold Z AU - Stelling, Richard W AU - Suggs, Robert M AU - Thompson, Shane D AU - Wagner, Robert V Y1 - 2015/05/15/ PY - 2015 DA - 2015 May 15 SP - 229 EP - 235 PB - Elsevier, New York, NY VL - 252 SN - 0019-1035, 0019-1035 KW - maturity KW - impact features KW - Moon KW - secondary craters KW - Lunar Reconnaissance Orbiter Camera KW - impacts KW - ejecta KW - distribution KW - lunar craters KW - size KW - morphology KW - micrometeorites KW - meteorites KW - craters KW - impact craters KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692743396?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=New+crater+on+the+Moon+and+a+swarm+of+secondaries&rft.au=Robinson%2C+Mark+S%3BBoyd%2C+Aaron+K%3BDenevi%2C+Brett+W%3BLawrence%2C+Samuel+J%3BMcEwen%2C+Alfred+S%3BMoser%2C+Danielle+E%3BPovilaitis%2C+Reinhold+Z%3BStelling%2C+Richard+W%3BSuggs%2C+Robert+M%3BThompson%2C+Shane+D%3BWagner%2C+Robert+V&rft.aulast=Robinson&rft.aufirst=Mark&rft.date=2015-05-15&rft.volume=&rft.issue=&rft.spage=5&rft.isbn=&rft.btitle=&rft.title=South+China+Morning+Post+%281903-1941%29&rft.issn=&rft_id=info:doi/ L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 26 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2015-07-02 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - craters; distribution; ejecta; impact craters; impact features; impacts; lunar craters; Lunar Reconnaissance Orbiter Camera; maturity; meteorites; micrometeorites; Moon; morphology; regolith; secondary craters; size DO - http://dx.doi.org/10.1016/j.icarus.2015.01.019 ER - TY - JOUR T1 - Tracking the source of the enriched Martian meteorites in olivine-hosted melt inclusions of two depleted shergottites, Yamato 980459 and Tissint AN - 1680752954; 2015-041806 AB - The apparent lack of plate tectonics on all terrestrial planets other than Earth has been used to support the notion that for most planets, once a primitive crust forms, the crust and mantle evolve geochemically-independent through time. This view has had a particularly large impact on models for the evolution of Mars and its silicate interior. Recent data indicating a greater potential that there may have been exchange between the martian crust and mantle has led to a search for additional geochemical evidence to support the alternative hypothesis, that some mechanism of crustal recycling may have operated early in the history of Mars. In order to study the most juvenile melts available to investigate martian mantle source(s) and melting processes, the trace element compositions of olivine-hosted melt inclusions for two incompatible-element-depleted olivine-phyric shergottites, Yamato 980459 (Y98) and Tissint, and the interstitial glass of Y98, have been measured by Secondary Ionization Mass Spectrometry (SIMS). Chondrite-normalized Rare Earth Element (REE) patterns for both Y98 and Tissint melt inclusions, and the Y98 interstitial glass, are characteristically light-REE depleted and parallel those of their host rock. For Y98, a clear flattening and upward inflection of La and Ce, relative to predictions based on middle and heavier REE, provides evidence for involvement of an enriched component early in their magmatic history; either inherited from a metasomatized mantle or crustal source, early on and prior to extensive host crystallization. Comparing these melt inclusion and interstitial glass analyses to existing melt inclusion and whole-rock data sets for the shergottite meteorite suite, defines mixing relationships between depleted and enriched end members, analogous to mixing relationships between whole rock Sr and Nd isotopic measurements. When considered in light of their petrologic context, the origin of these trace element enriched and isotopically evolved signatures represents either (1) crustal assimilation during the final few km of melt ascent towards the martian surface, or (2) assimilation soon after melt segregation, through melt-rock interaction with a portion of the martian crust recycled back into the mantle. Abstract Copyright (2015) Elsevier, B.V. JF - Earth and Planetary Science Letters AU - Peters, T J AU - Simon, J I AU - Jones, J H AU - Usui, T AU - Moriwaki, R AU - Economos, R C AU - Schmitt, A K AU - McKeegan, K D Y1 - 2015/05/15/ PY - 2015 DA - 2015 May 15 SP - 91 EP - 102 PB - Elsevier, Amsterdam VL - 418 SN - 0012-821X, 0012-821X KW - silicates KW - stony meteorites KW - ion probe data KW - Martian meteorites KW - mass spectra KW - mantle KW - olivine group KW - Mars KW - melt inclusions KW - SNC Meteorites KW - assimilation KW - meteorites KW - melting KW - olivine KW - inclusions KW - orthosilicates KW - spectra KW - rare earths KW - trace elements KW - depletion KW - Yamato Meteorites KW - recycling KW - incompatible elements KW - Y 980459 KW - achondrites KW - terrestrial planets KW - nesosilicates KW - planets KW - Tissint Meteorite KW - shergottite KW - metals KW - planetary interiors KW - crystallization KW - fluid inclusions KW - crust KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680752954?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Earth+and+Planetary+Science+Letters&rft.atitle=Tracking+the+source+of+the+enriched+Martian+meteorites+in+olivine-hosted+melt+inclusions+of+two+depleted+shergottites%2C+Yamato+980459+and+Tissint&rft.au=Peters%2C+T+J%3BSimon%2C+J+I%3BJones%2C+J+H%3BUsui%2C+T%3BMoriwaki%2C+R%3BEconomos%2C+R+C%3BSchmitt%2C+A+K%3BMcKeegan%2C+K+D&rft.aulast=Peters&rft.aufirst=T&rft.date=2015-05-15&rft.volume=418&rft.issue=&rft.spage=91&rft.isbn=&rft.btitle=&rft.title=Earth+and+Planetary+Science+Letters&rft.issn=0012821X&rft_id=info:doi/10.1016%2Fj.epsl.2015.02.033 L2 - http://www.sciencedirect.com/science/journal/0012821X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2015-01-01 N1 - Number of references - 59 N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-10-25 N1 - CODEN - EPSLA2 N1 - SubjectsTermNotLitGenreText - achondrites; assimilation; crust; crystallization; depletion; fluid inclusions; inclusions; incompatible elements; ion probe data; mantle; Mars; Martian meteorites; mass spectra; melt inclusions; melting; metals; meteorites; nesosilicates; olivine; olivine group; orthosilicates; planetary interiors; planets; rare earths; recycling; shergottite; silicates; SNC Meteorites; spectra; stony meteorites; terrestrial planets; Tissint Meteorite; trace elements; Y 980459; Yamato Meteorites DO - http://dx.doi.org/10.1016/j.epsl.2015.02.033 ER - TY - NEWS T1 - Meteors from Halley's Comet AN - 1680663852 JF - UPI Space Daily AU - Dr. Tony Phillips for NASA Science News Y1 - 2015/05/14/ PY - 2015 DA - 2015 May 14 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680663852?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=Meteors+from+Halley%27s+Comet&rft.au=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2015-05-14&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-05-14 ER - TY - NEWS T1 - Pollution Monitoring Instrument Passes Critical NASA Review AN - 1680663238 JF - UPI Space Daily AU - Michael Finneran for Langley Research Center Y1 - 2015/05/14/ PY - 2015 DA - 2015 May 14 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680663238?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=Pollution+Monitoring+Instrument+Passes+Critical+NASA+Review&rft.au=Michael+Finneran+for+Langley+Research+Center&rft.aulast=Michael+Finneran+for+Langley+Research+Center&rft.aufirst=&rft.date=2015-05-14&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-05-14 ER - TY - NEWS T1 - How Dry Is Texas? SMAP, TxSON Network Aim to Find Out AN - 1680296946 JF - UPI Space Daily AU - Carol Rasmussen for NASA Earth News Y1 - 2015/05/13/ PY - 2015 DA - 2015 May 13 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680296946?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=How+Dry+Is+Texas%3F+SMAP%2C+TxSON+Network+Aim+to+Find+Out&rft.au=Carol+Rasmussen+for+NASA+Earth+News&rft.aulast=Carol+Rasmussen+for+NASA+Earth+News&rft.aufirst=&rft.date=2015-05-13&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-05-13 ER - TY - NEWS T1 - Fire and Ice: A MESSENGER Recap AN - 1679853046 JF - UPI Space Daily AU - Dr. Tony Phillips for NASA Science News Y1 - 2015/05/11/ PY - 2015 DA - 2015 May 11 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1679853046?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=Fire+and+Ice%3A+A+MESSENGER+Recap&rft.au=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2015-05-11&rft.volume=&rft.issue=&rft.spage=10&rft.isbn=&rft.btitle=&rft.title=South+China+Morning+Post+%281903-1941%29&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-05-11 ER - TY - JOUR T1 - RECONSTRUCTING EMISSION FROM PRE-REIONIZATION SOURCES WITH COSMIC INFRARED BACKGROUND FLUCTUATION MEASUREMENTS BY THE JWST AN - 1727678863; PQ0002197589 AB - We present new methodology to use cosmic infrared background (CIB) fluctuations to probe sources at 10 [, ~] 30. JF - Astrophysical Journal AU - Kashlinsky, A AU - Mather, J C AU - Helgason, K AU - Arendt, R G AU - Bromm, V AU - Moseley, S H AD - Code 665, Observational Cosmology Lab, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA, Alexander.Kashlinsky@nasa.gov Y1 - 2015/05/10/ PY - 2015 DA - 2015 May 10 SP - 1 EP - 26 PB - IOP Publishing, The Public Ledger Building, Suite 929 Philadelphia PA 19106 United States VL - 804 IS - 2 SN - 0004-637X, 0004-637X KW - Pollution Abstracts; Meteorological & Geoastrophysical Abstracts KW - cosmic background radiation KW - early universe KW - infrared: diffuse background KW - large-scale structure of universe KW - Historical account KW - Age KW - Telescopes KW - Acoustic waves KW - Emission measurements KW - Emissions KW - Galaxies KW - Noise pollution KW - Universe KW - P 0000:AIR POLLUTION KW - M2 524:Stars, Universe (524) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1727678863?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Astrophysical+Journal&rft.atitle=RECONSTRUCTING+EMISSION+FROM+PRE-REIONIZATION+SOURCES+WITH+COSMIC+INFRARED+BACKGROUND+FLUCTUATION+MEASUREMENTS+BY+THE+JWST&rft.au=Kashlinsky%2C+A%3BMather%2C+J+C%3BHelgason%2C+K%3BArendt%2C+R+G%3BBromm%2C+V%3BMoseley%2C+S+H&rft.aulast=Kashlinsky&rft.aufirst=A&rft.date=2015-05-10&rft.volume=804&rft.issue=2&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Astrophysical+Journal&rft.issn=0004637X&rft_id=info:doi/10.1088%2F0004-637X%2F804%2F2%2F99 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-10-01 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Telescopes; Acoustic waves; Galaxies; Noise pollution; Universe; Historical account; Age; Emissions; Emission measurements DO - http://dx.doi.org/10.1088/0004-637X/804/2/99 ER - TY - JOUR T1 - Curtain eruptions from Enceladus' south-polar terrain AN - 1692747223; 2015-061866 JF - Nature (London) AU - Spitale, Joseph N AU - Hurford, Terry A AU - Rhoden, Alyssa R AU - Berkson, Emily E AU - Platts, Symeon S Y1 - 2015/05/07/ PY - 2015 DA - 2015 May 07 SP - 57 EP - 60 PB - Macmillan Journals, London VL - 521 IS - 7550 SN - 0028-0836, 0028-0836 KW - surface properties KW - icy satellites KW - polar regions KW - imagery KW - anomalies KW - giant planets KW - Saturn KW - planets KW - fractures KW - terrains KW - eruptions KW - surface features KW - outer planets KW - Enceladus Satellite KW - satellites KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692747223?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nature+%28London%29&rft.atitle=Curtain+eruptions+from+Enceladus%27+south-polar+terrain&rft.au=Spitale%2C+Joseph+N%3BHurford%2C+Terry+A%3BRhoden%2C+Alyssa+R%3BBerkson%2C+Emily+E%3BPlatts%2C+Symeon+S&rft.aulast=Spitale&rft.aufirst=Joseph&rft.date=2015-05-07&rft.volume=521&rft.issue=7550&rft.spage=57&rft.isbn=&rft.btitle=&rft.title=Nature+%28London%29&rft.issn=00280836&rft_id=info:doi/10.1038%2Fnature14368 L2 - http://www.nature.com/nature/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 7 N1 - Document feature - illus. N1 - Last updated - 2015-07-02 N1 - CODEN - NATUAS N1 - SubjectsTermNotLitGenreText - anomalies; Enceladus Satellite; eruptions; fractures; giant planets; icy satellites; imagery; outer planets; planets; polar regions; remote sensing; satellites; Saturn; surface features; surface properties; terrains DO - http://dx.doi.org/10.1038/nature14368 ER - TY - JOUR T1 - Potential for Microbial Oxidation of Ferrous Iron in Basaltic Glass AN - 1837299763; PQ0003746432 AB - Basaltic glass (BG) is an amorphous ferrous iron [Fe(II)]-containing material present in basaltic rocks, which are abundant on rocky planets such as Earth and Mars. Previous research has suggested that Fe(II) in BG can serve as an energy source for chemolithotrophic microbial metabolism, which has important ramifications for potential past and present microbial life on Mars. However, to date there has been no direct demonstration of microbially catalyzed oxidation of Fe(II) in BG. In this study, three different culture systems were used to investigate the potential for microbial oxidation of Fe(II) in BG, including (1) the chemolithoautotrophic Fe(II)-oxidizing, nitrate-reducing "Straub culture"; (2) the mixotrophic Fe(II)-oxidizing, nitrate-reducing organism Desulfitobacterium frappieri strain G2; and (3) indigenous microorganisms from a streambed Fe seep in Wisconsin. The BG employed consisted of clay and silt-sized particles of freshly quenched lava from the TEB flow in Kilauea, Hawaii. Soluble Fe(II) or chemically reduced NAu-2 smectite (RS) were employed as positive controls to verify Fe(II) oxidation activity in the culture systems. All three systems demonstrated oxidation of soluble Fe(II) and/or structural Fe(II) in RS, whereas no oxidation of Fe(II) in BG material was observed. The inability of the Straub culture to oxidize Fe(II) in BG was particularly surprising, as this culture can oxidize other insoluble Fe(II)-bearing minerals such as biotite, magnetite, and siderite. Although the reason for the resistance of the BG toward enzymatic oxidation remains unknown, it seems possible that the absence of distinct crystal faces or edge sites in the amorphous glass renders the material resistant to such attack. These findings have implications with regard to the idea that Fe(II)-Si-rich phases in basalt rocks could provide a basis for chemolithotrophic microbial life on Mars, specifically in neutral-pH environments where acid-promoted mineral dissolution and utilization of dissolved Fe(II) as an energy source is not likely to take place. Key Words: Basaltic glass-Chemolithotrophic-Microbial-Iron oxidation-Mars. Astrobiology 15, 331-340. JF - Astrobiology AU - Xiong, Mai Yia AU - Shelobolina, Evgenya S AU - Roden, Eric E AD - Department of Geoscience, University of Wisconsin, and NASA Astrobiology Institute, University of Wisconsin, Madison, Wisconsin. Y1 - 2015/05// PY - 2015 DA - May 2015 SP - 331 EP - 340 PB - Mary Ann Liebert, Inc., 2 Madison Ave Larchmont NY 10538-1962 United States VL - 15 IS - 5 SN - 1531-1074, 1531-1074 KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Magnetite KW - Volcanic glass KW - Smectite KW - ISE, USA, Hawaii KW - Crystals KW - USA, Wisconsin KW - Desulfitobacterium frappieri KW - Siderite KW - Basalts KW - Clays KW - Energy KW - Energy resources KW - Oxidation KW - Microorganisms KW - Dissolution KW - Seepages KW - Minerals KW - Iron KW - Metabolism KW - Biotite KW - magnetite KW - Q1 08563:Fishing gear and methods KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1837299763?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Astrobiology&rft.atitle=Potential+for+Microbial+Oxidation+of+Ferrous+Iron+in+Basaltic+Glass&rft.au=Xiong%2C+Mai+Yia%3BShelobolina%2C+Evgenya+S%3BRoden%2C+Eric+E&rft.aulast=Xiong&rft.aufirst=Mai&rft.date=2015-05-01&rft.volume=15&rft.issue=5&rft.spage=331&rft.isbn=&rft.btitle=&rft.title=Astrobiology&rft.issn=15311074&rft_id=info:doi/10.1089%2Fast.2014.1233 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-11-01 N1 - Number of references - 59 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Magnetite; Volcanic glass; Energy resources; Smectite; Siderite; Seepages; Basalts; Iron; Biotite; Energy; Oxidation; Microorganisms; Dissolution; Crystals; Minerals; Metabolism; Clays; magnetite; Desulfitobacterium frappieri; ISE, USA, Hawaii; USA, Wisconsin DO - http://dx.doi.org/10.1089/ast.2014.1233 ER - TY - JOUR T1 - A combined solar and geomagnetic index for thermospheric climate AN - 1808375572; PQ0001680737 AB - Infrared radiation from nitric oxide (NO) at 5.3 mu m is a primary mechanism by which the thermosphere cools to space. The Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument on the NASA Thermosphere-Ionosphere-Mesosphere Energetics and Dynamics satellite has been measuring thermospheric cooling by NO for over 13years. In this letter we show that the SABER time series of globally integrated infrared power (watts) radiated by NO can be replicated accurately by a multiple linear regression fit using the F sub(10.7), Ap, and Dst indices. This allows reconstruction of the NO power time series back nearly 70years with extant databases of these indices. The relative roles of solar ultraviolet and geomagnetic processes in determining the NO cooling are derived and shown to vary significantly over the solar cycle. The NO power is a fundamental integral constraint on the thermospheric climate, and the time series presented here can be used to test upper atmosphere models over seven different solar cycles. Key Points * F sub(10.7), Ap, and Dst replicate time series of radiative cooling by nitric oxide * Quantified relative roles of solar irradiance, geomagnetism in radiative cooling * Establish a new index and extend record of thermospheric cooling back 70years JF - Geophysical Research Letters AU - Mlynczak, Martin G AU - Hunt, Linda A AU - Marshall, BThomas AU - Russell, James M AU - Mertens, Christopher J AU - Thompson, REarl AU - Gordley, Larry L AD - NASA Langley Research Center, Hampton, Virginia, USA. Y1 - 2015/05// PY - 2015 DA - May 2015 SP - 3677 EP - 3682 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 42 IS - 10 SN - 0094-8276, 0094-8276 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Climates KW - Infrared radiation KW - Soundings KW - Infrared Radiation KW - Cooling KW - Atmosphere KW - Databases KW - Radiometry KW - Geomagnetism KW - Oxides KW - Upper atmosphere KW - Modelling KW - SW 0810:General KW - Q2 09182:Methods and instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808375572?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=A+combined+solar+and+geomagnetic+index+for+thermospheric+climate&rft.au=Mlynczak%2C+Martin+G%3BHunt%2C+Linda+A%3BMarshall%2C+BThomas%3BRussell%2C+James+M%3BMertens%2C+Christopher+J%3BThompson%2C+REarl%3BGordley%2C+Larry+L&rft.aulast=Mlynczak&rft.aufirst=Martin&rft.date=2015-05-01&rft.volume=42&rft.issue=10&rft.spage=3677&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL064038 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-08-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Geomagnetism; Infrared radiation; Soundings; Upper atmosphere; Modelling; Databases; Radiometry; Climates; Infrared Radiation; Atmosphere; Cooling; Oxides DO - http://dx.doi.org/10.1002/2015GL064038 ER - TY - JOUR T1 - Evaluating Observation Influence on Regional Water Budgets in Reanalyses AN - 1790969682; PQ0003081197 AB - The assimilation of observations in reanalyses incurs the potential for the physical terms of budgets to be balanced by a term relating the fit of the observations relative to a forecast first guess analysis. This may indicate a limitation in the physical processes of the background model or perhaps assimilating data from an inconsistent observing system. In the MERRA reanalysis, an area of long-term moisture flux divergence over land has been identified over the central United States. Here, the water vapor budget is evaluated in this region, taking advantage of two unique features of the MERRA diagnostic output: 1) a closed water budget that includes the analysis increment and 2) a gridded diagnostic output dataset of the assimilated observations and their innovations (e.g., forecast departures). In the central United States, an anomaly occurs where the analysis adds water to the region, while precipitation decreases and moisture flux divergence increases. This is related more to a change in the observing system than to a deficiency in the model physical processes. MERRA's Gridded Innovations and Observations (GIO) data narrow the observations that influence this feature to the ATOVS and Aqua satellites during the 0600 and 1800 UTC analysis cycles, when radiosonde information is not prevalent. Observing system experiments further narrow the instruments that affect the anomalous feature to AMSU-A (mainly window channels) and Atmospheric Infrared Sounder (AIRS). This effort also shows the complexities of the observing system and the reactions of the regional water budgets in reanalyses to the assimilated observations. JF - Journal of Climate AU - Bosilovich, Michael G AU - Chern, Jiun-Dar AU - Mocko, David AU - Robertson, Franklin R AU - da Silva, Arlindo M AD - Global Modeling and Assimilation Office, NASA Goddard Space Flight Center, Greenbelt, Maryland Y1 - 2015/05// PY - 2015 DA - May 2015 SP - 3631 EP - 3649 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 28 IS - 9 SN - 0894-8755, 0894-8755 KW - Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Water budget KW - Water vapor KW - Data assimilation KW - Diagnostics KW - Reanalysis data KW - Remote Sensing KW - Moisture KW - Meteorological data KW - Moisture flux KW - ATOVS satellite KW - Hydrologic Budget KW - Divergence KW - Data reanalysis KW - Radiosondes KW - Modelling KW - Biological surveys KW - Atmospheric precipitations KW - Satellite Technology KW - Climates KW - Precipitation KW - Water vapor budget KW - Model Studies KW - Channels KW - USA KW - Satellite data KW - Fluctuations KW - AQ 00001:Water Resources and Supplies KW - Q2 09144:Regional studies, expeditions and data reports KW - SW 0810:General KW - M2 551.58:Climatology (551.58) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1790969682?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Climate&rft.atitle=Evaluating+Observation+Influence+on+Regional+Water+Budgets+in+Reanalyses&rft.au=Bosilovich%2C+Michael+G%3BChern%2C+Jiun-Dar%3BMocko%2C+David%3BRobertson%2C+Franklin+R%3Bda+Silva%2C+Arlindo+M&rft.aulast=Bosilovich&rft.aufirst=Michael&rft.date=2015-05-01&rft.volume=28&rft.issue=9&rft.spage=3631&rft.isbn=&rft.btitle=&rft.title=Journal+of+Climate&rft.issn=08948755&rft_id=info:doi/10.1175%2FJCLI-D-14-00623.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Number of references - 20 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Atmospheric precipitations; Biological surveys; Water budget; Radiosondes; Modelling; Moisture flux; Meteorological data; Satellite data; ATOVS satellite; Precipitation; Divergence; Water vapor budget; Data assimilation; Data reanalysis; Remote Sensing; Channels; Satellite Technology; Moisture; Climates; Hydrologic Budget; Fluctuations; Model Studies; USA DO - http://dx.doi.org/10.1175/JCLI-D-14-00623.1 ER - TY - JOUR T1 - Integrated modeling of aerosol, cloud, precipitation and land processes at satellite-resolved scales AN - 1770302225; PQ0002195163 AB - With support from NASA's Modeling and Analysis Program, we have recently developed the NASA Unified-Weather Research and Forecasting model (NU-WRF). NU-WRF is an observation-driven integrated modeling system that represents aerosol, cloud, precipitation and land processes at satellite-resolved scales. "Satellite-resolved" scales (roughly 1-25 km), bridge the continuum between local (microscale), regional (mesoscale) and global (synoptic) processes. NU-WRF is a superset of the National Center for Atmospheric Research (NCAR) Advanced Research WRF (ARW) dynamical core model, achieved by fully integrating the GSFC Land Information System (LIS, already coupled to WRF), the WRF/Chem enabled version of the GOddard Chemistry Aerosols Radiation Transport (GOCART) model, the Goddard Satellite Data Simulation Unit (G-SDSU), and custom boundary/initial condition preprocessors into a single software release, with source code available by agreement with NASA/GSFC. Full coupling between aerosol, cloud, precipitation and land processes is critical for predicting local and regional water and energy cycles. JF - Environmental Modelling & Software AU - Peters-Lidard, Christa D AU - Kemp, Eric M AU - Matsui, Toshihisa AU - Santanello, Joseph A, Jr AU - Kumar, Sujay V AU - Jacob, Jossy P AU - Clune, Thomas AU - Tao, Wei-Kuo AU - Chin, Mian AU - Hou, Arthur AU - Case, Jonathan L AU - Kim, Dongchul AU - Kim, Kyu-Myong AU - Lau, William AU - Liu, Yuqiong AU - Shi, Jainn AU - Starr, David AU - Tan, Qian AU - Tao, Zhining AU - Zaitchik, Benjamin F AU - Zavodsky, Bradley AU - Zhang, Sara Q AU - Zupanski, Milija AD - Hydrospheric and Biospheric Sciences Division, Code 610HB, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA Y1 - 2015/05// PY - 2015 DA - May 2015 SP - 149 EP - 159 PB - Elsevier B.V., P.O. Box 800 Kidlington Oxford OX5 1DX United Kingdom VL - 67 SN - 1364-8152, 1364-8152 KW - Environmental Engineering Abstracts (EN); Computer and Information Systems Abstracts (CI); CSA / ASCE Civil Engineering Abstracts (CE); Aerospace & High Technology Database (AH) KW - Earth system modeling KW - Aerosols KW - Clouds KW - Precipitation KW - Land surface modeling KW - Satellites KW - High performance computing KW - Frameworks KW - Interoperability KW - Earth system studies KW - Software KW - Computer programs KW - Mathematical models KW - Land KW - NASA UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1770302225?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Modelling+%26+Software&rft.atitle=Integrated+modeling+of+aerosol%2C+cloud%2C+precipitation+and+land+processes+at+satellite-resolved+scales&rft.au=Peters-Lidard%2C+Christa+D%3BKemp%2C+Eric+M%3BMatsui%2C+Toshihisa%3BSantanello%2C+Joseph+A%2C+Jr%3BKumar%2C+Sujay+V%3BJacob%2C+Jossy+P%3BClune%2C+Thomas%3BTao%2C+Wei-Kuo%3BChin%2C+Mian%3BHou%2C+Arthur%3BCase%2C+Jonathan+L%3BKim%2C+Dongchul%3BKim%2C+Kyu-Myong%3BLau%2C+William%3BLiu%2C+Yuqiong%3BShi%2C+Jainn%3BStarr%2C+David%3BTan%2C+Qian%3BTao%2C+Zhining%3BZaitchik%2C+Benjamin+F%3BZavodsky%2C+Bradley%3BZhang%2C+Sara+Q%3BZupanski%2C+Milija&rft.aulast=Peters-Lidard&rft.aufirst=Christa&rft.date=2015-05-01&rft.volume=67&rft.issue=&rft.spage=149&rft.isbn=&rft.btitle=&rft.title=Environmental+Modelling+%26+Software&rft.issn=13648152&rft_id=info:doi/10.1016%2Fj.envsoft.2015.01.007 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-03-01 N1 - Last updated - 2017-01-05 DO - http://dx.doi.org/10.1016/j.envsoft.2015.01.007 ER - TY - JOUR T1 - UNVEILING THE SECRETS OF METALLICITY AND MASSIVE STAR FORMATION USING DLAS ALONG GAMMA-RAY BURSTS AN - 1765951352; PQ0002556363 AB - We present the largest, publicly available sample of damped Ly alpha systems (DLAs) along the lines of sight of Swift-discovered gamma-ray bursts (GRBs) in order to investigate the environmental properties of long GRB hosts in the z = 1.8-6 redshift range. Compared with the most recent quasar DLA sample (QSO-DLA), our analysis shows that GRB-DLAs probe a more metal-enriched environment at z [> ~] 3, up to [X/H] ~ -0.5. In the z = 2-3 redshift range, despite the large number of lower limits, there are hints that the two populations may be more similar (only at a 90% significance level) than at higher redshifts. Also, at high-z, the GRB-DLA average metallicity seems to decline at a lower rate than the QSO-DLAs: GRB-DLA hosts may be polluted with metals at least as far as ~2 kpc from the GRB explosion site, probably due to previous star formation episodes and/or supernova explosions. This shallow metallicity trend, now extended up to z ~ 5, confirms previous results that GRB hosts are star-forming and have, on average, higher metallicities than the general QSO-DLA population. Finally, our host metallicity measurements are broadly consistent with the predictions derived from the hypothesis of two channels of GRB progenitors, one of which is mildly affected by a metallicity bias, although more data are needed to constrain the models at z [> ~] 4. JF - Astrophysical Journal AU - Cucchiara, A AU - Fumagalli, M AU - Rafelski, M AU - Kocevski, D AU - Prochaska, J X AU - Cooke, R J AU - Becker, G D AD - NASA Postdoctoral Program Fellow, Goddard Space Flight Center, Greenbelt, MD 20771, USA, antonino.cucchiara@nasa.gov Y1 - 2015/05/01/ PY - 2015 DA - 2015 May 01 SP - 1 EP - 16 PB - IOP Publishing, The Public Ledger Building, Suite 929 Philadelphia PA 19106 United States VL - 804 IS - 1 SN - 0004-637X, 0004-637X KW - Pollution Abstracts; Meteorological & Geoastrophysical Abstracts KW - galaxies: general KW - galaxies: ISM KW - gamma-ray burst: general KW - quasars: absorption lines KW - techniques: imaging spectroscopy KW - Prediction KW - Metallicity KW - Metals KW - Supernova KW - Star formation KW - Gamma-ray bursts KW - Quasars KW - Explosions KW - P 9999:GENERAL POLLUTION KW - M2 524:Stars, Universe (524) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765951352?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Astrophysical+Journal&rft.atitle=UNVEILING+THE+SECRETS+OF+METALLICITY+AND+MASSIVE+STAR+FORMATION+USING+DLAS+ALONG+GAMMA-RAY+BURSTS&rft.au=Cucchiara%2C+A%3BFumagalli%2C+M%3BRafelski%2C+M%3BKocevski%2C+D%3BProchaska%2C+J+X%3BCooke%2C+R+J%3BBecker%2C+G+D&rft.aulast=Cucchiara&rft.aufirst=A&rft.date=2015-05-01&rft.volume=804&rft.issue=1&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Astrophysical+Journal&rft.issn=0004637X&rft_id=info:doi/10.1088%2F0004-637X%2F804%2F1%2F51 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-02-01 N1 - Last updated - 2016-03-17 N1 - SubjectsTermNotLitGenreText - Metallicity; Supernova; Star formation; Quasars; Gamma-ray bursts; Prediction; Metals; Explosions DO - http://dx.doi.org/10.1088/0004-637X/804/1/51 ER - TY - JOUR T1 - Characterizing the impacts of vertical transport and photochemical ozone production on an exceedance area AN - 1732832132; PQ0002221973 AB - Offshore and inland vertical profiles of ozone (O3) were measured from an aircraft during 16 flights from January 2012 to January 2013 over the northern San Joaquin Valley (SJV) and over the Pacific Ocean. Analysis of in situ measurements presents an assessment of the seasonality and magnitude of net O3 production and transport within the lower troposphere above the SJV. During the high O3 season (May-October), the Dobson Unit sum of O3 in the 0-2 km above sea level (km.a.s.l.) layer above the SJV exceeds that above the offshore profile by up to 20.5%, implying net O3 production over the SJV or vertical transport from above. During extreme events (e.g. Stratosphere-to-troposphere transport) vertical features (areas of enhanced or depleted O3 or water vapor) are observed in the offshore and SJV profiles at different altitudes, demonstrating the scale of vertical mixing during transport. Correlation analysis between offshore O3 profiles and O3 surface sites in the SJV lends further support the hypothesis of vertical mixing. Correlation analysis indicates that O3 mixing ratios at surface sites in the northern and middle SJV show significant correlations to the 1.5-2 km.a.s.l. offshore altitude range. Southern SJV O3 surface sites show a shift towards maximum correlations at increased time-offsets, and O3 surface sites at elevated altitudes show significant correlations with higher offshore altitudes (2.5-4 km.a.s.l.). JF - Atmospheric Environment AU - Yates, Emma L AU - Iraci, Laura T AU - Austerberry, David AU - Pierce, RBradley AU - Roby, Matthew C AU - Tadic, Jovan M AU - Loewenstein, Max AU - Gore, Warren AD - Atmospheric Science Branch, NASA Ames Research Center, Moffett Field, CA 94035, USA Y1 - 2015/05// PY - 2015 DA - May 2015 SP - 342 EP - 350 PB - Elsevier B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 109 SN - 1352-2310, 1352-2310 KW - Environment Abstracts; Meteorological & Geoastrophysical Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Tropospheric ozone KW - Air quality KW - San Joaquin Valley KW - Photochemistry KW - Water Vapor KW - Ozone measurements KW - Sea level KW - Photochemical ozone production KW - USA, California, San Joaquin Valley KW - Correlations KW - Correlation analysis KW - Mixing KW - Ozone in troposphere KW - Altitude KW - Assessments KW - Aircraft KW - Correlation Analysis KW - Ozone profiles KW - Seasonal variability KW - Mixing ratio KW - Seasonal variations KW - Ozone KW - Seasonality KW - Marine KW - Water vapor KW - Aircraft observations KW - Troposphere KW - Valleys KW - Vertical advection KW - Vertical mixing KW - Vertical profiles KW - Photochemicals KW - Lower troposphere KW - Profiles KW - Oceans KW - In situ measurement KW - Q2 09243:Structure, mechanics and thermodynamics KW - M2 551.510.42:Air Pollution (551.510.42) KW - SW 0810:General KW - ENA 01:Air Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1732832132?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=South+China+Morning+Post+%281903-1941%29&rft.atitle=CORRESPONDENCE%3A+THE+BANQUE+INDUSTRIELLE+%5BTO+THE+EDITOR%2C+S.+C.+M.+POST.%5D&rft.au=ANOTHER+POOR+DEPOSITOR.&rft.aulast=ANOTHER+POOR+DEPOSITOR.&rft.aufirst=&rft.date=1921-07-06&rft.volume=&rft.issue=&rft.spage=6&rft.isbn=&rft.btitle=&rft.title=South+China+Morning+Post+%281903-1941%29&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-11-01 N1 - Number of references - 31 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Photochemistry; Seasonality; Sea level; Troposphere; Correlation analysis; Vertical advection; Vertical profiles; Vertical mixing; Ozone; Ozone in troposphere; Ozone measurements; Lower troposphere; Photochemical ozone production; Aircraft observations; Correlations; Mixing ratio; Seasonal variability; Ozone profiles; Altitude; Photochemicals; Aircraft; Water vapor; Oceans; Valleys; Seasonal variations; In situ measurement; Water Vapor; Assessments; Profiles; Correlation Analysis; Mixing; USA, California, San Joaquin Valley; Marine DO - http://dx.doi.org/10.1016/j.atmosenv.2014.09.002 ER - TY - JOUR T1 - The Saturn hexagon TT - L'hexagone de Saturne AN - 1709176630; PQ0001866796 JF - La Meteorologie AU - Anonymous Y1 - 2015/05// PY - 2015 DA - May 2015 SP - 7 PB - Societe Meteorologique de France, 1, Quai Branly Paris 75340 Cedex 07 France IS - 89 SN - 0026-1181, 0026-1181 KW - Water Resources Abstracts; Aqualine Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Weather KW - Meteorology KW - AQ 00001:Water Resources and Supplies KW - Q2 09242:Observations and measurements at sea KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1709176630?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=La+Meteorologie&rft.atitle=The+Saturn+hexagon&rft.au=Anonymous&rft.aulast=Anonymous&rft.aufirst=&rft.date=2015-05-01&rft.volume=&rft.issue=89&rft.spage=7&rft.isbn=&rft.btitle=&rft.title=La+Meteorologie&rft.issn=00261181&rft_id=info:doi/ LA - French DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-09-01 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Meteorology; Weather ER - TY - JOUR T1 - Air-mass origin in the tropical lower stratosphere: The influence of Asian boundary layer air AN - 1705099324; PQ0001680760 AB - A climatology of air-mass origin in the tropical lower stratosphere is presented for the Goddard Earth Observing System Chemistry Climate Model. During late boreal summer and fall, air-mass fractions reveal that as much as 20% of the air in the tropical lower stratosphere last contacted the planetary boundary layer (PBL) over Asia; by comparison, the air-mass fractions corresponding to last PBL contact over North America and over Europe are negligible. Asian air reaches the extratropical tropopause within a few days of leaving the boundary layer and is quasi-horizontally transported into the tropical lower stratosphere, where it persists until January. The rapid injection of Asian air into the lower stratosphere-and its persistence in the deep tropics through late (boreal) winter-is important as industrial emissions over East Asia continue to increase. Hence, the Asian monsoon may play an increasingly important role in shaping stratospheric composition. Key Points * Approximately 20% of tropical lower stratospheric air originates at the Asian boundary layer * Asian air reaches the tropical stratosphere within days of leaving the surface * Origin tracers are rigorous and practical tools for assessing model transport JF - Geophysical Research Letters AU - Orbe, Clara AU - Waugh, Darryn W AU - Newman, Paul A AD - Laboratory for Atmospheric Chemistry and Dynamics, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2015/05// PY - 2015 DA - May 2015 SP - 4240 EP - 4248 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 42 IS - 10 SN - 0094-8276, 0094-8276 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Meteorological data KW - Tropopause KW - Boundary Layers KW - Injection KW - Stratospheric composition KW - Tracers KW - ANE, Europe KW - Climatology KW - Atmospheric boundary layer KW - Asia KW - Modelling KW - Air Pollution KW - North America KW - Climate models KW - Climates KW - Stratosphere KW - Boundary layers KW - Tropical environment KW - Asian monsoons KW - Monsoons KW - Q2 09262:Methods and instruments KW - SW 0810:General KW - M2 551.581:Latitudinal Influences (551.581) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1705099324?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=Air-mass+origin+in+the+tropical+lower+stratosphere%3A+The+influence+of+Asian+boundary+layer+air&rft.au=Orbe%2C+Clara%3BWaugh%2C+Darryn+W%3BNewman%2C+Paul+A&rft.aulast=Orbe&rft.aufirst=Clara&rft.date=2015-05-01&rft.volume=42&rft.issue=10&rft.spage=4240&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL063937 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Tropopause; Tropical environment; Boundary layers; Climatology; Stratosphere; Monsoons; Modelling; Meteorological data; Climate models; Asian monsoons; Atmospheric boundary layer; Stratospheric composition; Air Pollution; Tracers; Climates; Boundary Layers; Injection; North America; ANE, Europe; Asia DO - http://dx.doi.org/10.1002/2015GL063937 ER - TY - JOUR T1 - Variability of helium, neon, and argon in the lunar exosphere as observed by the LADEE NMS instrument AN - 1705053165; PQ0001680720 AB - The Neutral Mass Spectrometer (NMS) onboard the Lunar Atmosphere and Dust Environment Explorer (LADEE) provided the first global characterization of He and Ar along with the discovery of Ne in the lunar exosphere. The mapping of the equatorial distribution of these noble gases revealed new selenographic and temporal variations. Helium was found to be controlled by the supply of solar wind alpha particles and by the presence of an endogenous source that supplies the exosphere at a rate of 1.910 super(23)atomss super(-1). Neon was detected over the nightside at levels comparable to He and was found to exhibit the spatial distribution of a surface accommodated noncondensable gas. The global measurements of NMS revealed the presence of a localized Ar enhancement that has never been identified before at the western maria. The variability resulting from this local enhancement is coupled to a more global but transient source. Key Points * Exospheric He is controlled by solar wind and by an endogenous radiogenic source * Neon is present on the nightside at levels comparable to He * Localized Ar enhancement is present at the western maria JF - Geophysical Research Letters AU - Benna, M AU - Mahaffy, PR AU - Halekas, J S AU - Elphic, R C AU - Delory, G T AD - NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2015/05// PY - 2015 DA - May 2015 SP - 3723 EP - 3729 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 42 IS - 10 SN - 0094-8276, 0094-8276 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Variability KW - Spatial distribution KW - Lunar exosphere KW - Solar wind particles KW - Spatial Distribution KW - Atmosphere KW - Dust KW - Argon KW - Wind KW - Spectrometers KW - Biological surveys KW - Rare gases KW - Atmospheric gases KW - Solar wind KW - Temporal variations KW - Lunar atmosphere KW - Dusts KW - Helium KW - Solar wind-Mars interaction KW - Eolian dust KW - Neon KW - Q2 09262:Methods and instruments KW - SW 0810:General KW - M2 523.62:Solar Wind, Interplanetary Plasma (523.62) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1705053165?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=Variability+of+helium%2C+neon%2C+and+argon+in+the+lunar+exosphere+as+observed+by+the+LADEE+NMS+instrument&rft.au=Benna%2C+M%3BMahaffy%2C+PR%3BHalekas%2C+J+S%3BElphic%2C+R+C%3BDelory%2C+G+T&rft.aulast=Benna&rft.aufirst=M&rft.date=2015-05-01&rft.volume=42&rft.issue=10&rft.spage=3723&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL064120 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Biological surveys; Rare gases; Atmospheric gases; Argon; Temporal variations; Helium; Dust; Eolian dust; Neon; Spatial distribution; Solar wind; Lunar exosphere; Lunar atmosphere; Solar wind particles; Solar wind-Mars interaction; Variability; Spatial Distribution; Dusts; Atmosphere; Wind; Spectrometers DO - http://dx.doi.org/10.1002/2015GL064120 ER - TY - JOUR T1 - The impact of current CH sub(4) and N sub(2)O atmospheric loss process uncertainties on calculated ozone abundances and trends AN - 1701485592; PQ0001723035 AB - The atmospheric loss processes of N sub(2)O and CH sub(4), their estimated uncertainties, lifetimes, and impacts on ozone abundance and long-term trends are examined using atmospheric model calculations and updated kinetic and photochemical parameters and uncertainty factors from Stratospheric Processes and their Role in Climate (SPARC) (2013). The uncertainty ranges in calculated N sub(2)O and CH sub(4) global lifetimes computed using the SPARC estimated uncertainties are reduced by nearly a factor of 2 compared with uncertainties from Sander et al. (2011). Uncertainties in CH sub(4) loss due to reaction with OH and O( super(1)D) have relatively small impacts on present-day global total ozone ( plus or minus 0.2-0.5%). Uncertainty in the Cl+CH sub(4) reaction affects the amount of chlorine in radical versus reservoir forms and has a modest impact on present-day southern hemisphere (SH) polar ozone (~ plus or minus 6%) and on the rate of past ozone decline and future recovery. Uncertainty in the total rate coefficient for the O( super(1)D)+N sub(2)O reaction results in a substantial range in present-day stratospheric odd nitrogen ( plus or minus 20-25%) and global total ozone ( plus or minus 1.5-2.5%). Uncertainty in the O( super(1)D)+N sub(2)O reaction branching ratio for the O sub(2)+N sub(2) and 2NO product channels results in moderate impacts on odd nitrogen ( plus or minus 10%) and global ozone ( plus or minus 1%), with uncertainty in N sub(2)O photolysis resulting in relatively small impacts ( plus or minus 5% in odd nitrogen, plus or minus 0.5% in global ozone). Uncertainties in the O( super(1)D)+N sub(2)O reaction and its branching ratio also affect the rate of past global total ozone decline and future recovery, with a range in future ozone projections of plus or minus 1-1.5% by 2100, relative to present day. Key Points * CH sub(4) and N sub(2)O kinetic and photochemical uncertainties are updated * Uncertainty ranges in the global lifetimes of CH sub(4) and N sub(2)O are reduced * CH sub(4) and N sub(2)O loss uncertainties significantly impact global ozone JF - Journal of Geophysical Research: Atmospheres AU - Fleming, Eric L AU - George, Christian AU - Heard, Dwayne E AU - Jackman, Charles H AU - Kurylo, Michael J AU - Mellouki, Wahid AU - Orkin, Vladimir L AU - Swartz, William H AU - Wallington, Timothy J AU - Wine, Paul H AU - Burkholder, James B AD - NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2015/05// PY - 2015 DA - May 2015 SP - 5267 EP - 5293 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 120 IS - 10 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Photochemistry KW - Photolysis KW - Reservoir KW - Climates KW - Chlorine KW - Atmospheric models KW - Channels KW - Methane in the atmosphere KW - Ozone depletion KW - Global ozone KW - Nitrous oxide KW - Kinetics KW - Reservoirs KW - Nitrogen KW - Ozone KW - Modelling KW - Q2 09243:Structure, mechanics and thermodynamics KW - M2 556.55:Lakes, Reservoirs, Ponds (556.55) KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1701485592?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=The+impact+of+current+CH+sub%284%29+and+N+sub%282%29O+atmospheric+loss+process+uncertainties+on+calculated+ozone+abundances+and+trends&rft.au=Fleming%2C+Eric+L%3BGeorge%2C+Christian%3BHeard%2C+Dwayne+E%3BJackman%2C+Charles+H%3BKurylo%2C+Michael+J%3BMellouki%2C+Wahid%3BOrkin%2C+Vladimir+L%3BSwartz%2C+William+H%3BWallington%2C+Timothy+J%3BWine%2C+Paul+H%3BBurkholder%2C+James+B&rft.aulast=Fleming&rft.aufirst=Eric&rft.date=2015-05-01&rft.volume=120&rft.issue=10&rft.spage=5267&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2014JD022067 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Photochemistry; Reservoir; Photolysis; Nitrous oxide; Modelling; Ozone; Ozone depletion; Methane in the atmosphere; Global ozone; Reservoirs; Atmospheric models; Channels; Kinetics; Climates; Chlorine; Nitrogen DO - http://dx.doi.org/10.1002/2014JD022067 ER - TY - JOUR T1 - The ENSO effects on tropical clouds and top-of-atmosphere cloud radiative effects in CMIP5 models AN - 1701480181; PQ0001723038 AB - The El Nino-Southern Oscillation (ENSO) effects on tropical clouds and top-of-atmosphere (TOA) cloud radiative effects (CREs) in Coupled Model Intercomparison Project Phase 5 (CMIP5) models are evaluated using satellite-based observations and International Satellite Cloud Climatology Project satellite simulator output. Climatologically, most CMIP5 models produce considerably less total cloud amount with higher cloud top and notably larger reflectivity than observations in tropical Indo-Pacific (60 degree E-200 degree E; 10 degree S-10 degree N). During ENSO, most CMIP5 models strongly underestimate TOA CRE and cloud changes over western tropical Pacific. Over central tropical Pacific, while the multi-model mean resembles observations in TOA CRE and cloud amount anomalies, it notably overestimates cloud top pressure (CTP) decreases; there are also substantial inter-model variations. The relative effects of changes in cloud properties, temperature, and humidity on TOA CRE anomalies during ENSO in the CMIP5 models are assessed using cloud radiative kernels. The CMIP5 models agree with observations in that their TOA shortwave CRE anomalies are primarily contributed by total cloud amount changes, and their TOA longwave CRE anomalies are mostly contributed by changes in both total cloud amount and CTP. The model biases in TOA CRE anomalies particularly the strong underestimations over western tropical Pacific are, however, mainly explained by model biases in CTP and cloud optical thickness ( tau ) changes. Despite the distinct model climatological cloud biases particularly in tau regime, the TOA CRE anomalies from total cloud amount changes are comparable between the CMIP5 models and observations, because of the strong compensations between model underestimation of TOA CRE anomalies from thin clouds and overestimation from medium and thick clouds. Key Points * The CMIP5 models provide a good simulation of TOA CREs but not clouds * The ENSO effects in the CMIP5 models are affected by model biases in climatology * The CMIP5 models show a large diversity in representing tropical cloud processes JF - Journal of Geophysical Research: Atmospheres AU - Wang, Hailan AU - Su, Wenying AD - Climate Science Branch, NASA Langley Research Center, Hampton, Virginia, USA. Y1 - 2015/05// PY - 2015 DA - May 2015 SP - 4443 EP - 4465 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 120 IS - 10 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Hydrological Regime KW - Compensation KW - IS, Tropical Pacific KW - El Nino KW - Cloud amount KW - Ocean-atmosphere system KW - I, Indo-Pacific KW - Cloud properties KW - Cloud climatology KW - Climatology KW - Modelling KW - El Nino phenomena KW - Abiotic factors KW - Temperature effects KW - Marine KW - Simulation Analysis KW - Temperature KW - Tropical clouds KW - Humidity KW - Southern Oscillation KW - Clouds KW - Satellite data KW - Numerical simulations KW - Tropical environment KW - El Nino-Southern Oscillation event KW - Q2 09243:Structure, mechanics and thermodynamics KW - SW 0810:General KW - M2 551.588:Environmental Influences (551.588) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1701480181?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=The+ENSO+effects+on+tropical+clouds+and+top-of-atmosphere+cloud+radiative+effects+in+CMIP5+models&rft.au=Wang%2C+Hailan%3BSu%2C+Wenying&rft.aulast=Wang&rft.aufirst=Hailan&rft.date=2015-05-01&rft.volume=120&rft.issue=10&rft.spage=4443&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2014JD022337 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Temperature effects; Tropical environment; Ocean-atmosphere system; Humidity; Climatology; Abiotic factors; El Nino phenomena; Southern Oscillation; Modelling; Clouds; Satellite data; Numerical simulations; El Nino-Southern Oscillation event; Cloud amount; Tropical clouds; Cloud climatology; Cloud properties; Hydrological Regime; Compensation; Simulation Analysis; El Nino; Temperature; I, Indo-Pacific; IS, Tropical Pacific; Marine DO - http://dx.doi.org/10.1002/2014JD022337 ER - TY - JOUR T1 - An analysis of global aerosol type as retrieved by MISR AN - 1694979158; PQ0001664723 AB - In addition to aerosol optical depth (AOD), aerosol type is required globally for climate forcing calculations, constraining aerosol transport models and other applications. However, validating satellite aerosol-type retrievals is more challenging than testing AOD results, because aerosol type is a more complex quantity, and ground truth data are far less numerous and generally not as robust. We evaluate the Multiangle Imaging Spectroradiometer (MISR) Version 22 aerosol-type retrievals by assessing product self-consistency on a regional basis and by making comparisons with general expectation and with the Aerosol Robotic Network aerosol-type climatology, as available. The results confirm and add detail to the observation that aerosol-type discrimination improves dramatically where midvisible AOD exceeds about 0.15 or 0.2. When the aerosol-type information content of the observations is relatively low, increased scattering-angle range improves particle-type sensitivity. The MISR standard, operational product discriminates among small, medium, and large particles and exhibits qualitative sensitivity to single-scattering albedo (SSA) under good aerosol-type retrieval conditions, providing a categorical aerosol-type classification. MISR Aangstrom exponent deviates systematically from ground truth where particle types missing from the algorithm climatology are present, or where cloud contamination is likely to occur, and SSA tends to be overestimated where absorbing particles are found. We determined that the number of mixtures passing the algorithm acceptance criteria (#SuccMix) represents aerosol-type retrieval quality effectively, providing a useful aerosol-type quality flag. Key Points * MISR multiangle retrievals provide global aerosol-type classification mapping * Aerosol-type discrimination improves dramatically for aerosol optical depth >0.2 * The number of successful mixtures represents aerosol-type retrieval quality JF - Journal of Geophysical Research: Atmospheres AU - Kahn, Ralph A AU - Gaitley, Barbara J AD - Laboratory for Atmospheres, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2015/05// PY - 2015 DA - May 2015 SP - 4248 EP - 4281 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 120 IS - 9 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Remote Sensing KW - Aerosol transport KW - Contamination KW - Algorithms KW - Identification keys KW - Classification KW - Climatology KW - Mapping KW - Satellite Technology KW - Aerosols KW - Climate models KW - Mathematical models KW - Albedo KW - Climates KW - Imaging techniques KW - Clouds KW - Standards KW - Optical depth of aerosols KW - Global aerosols KW - M2 551.510.42:Air Pollution (551.510.42) KW - SW 0810:General KW - Q2 09105:Research programmes and expeditions UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1694979158?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=An+analysis+of+global+aerosol+type+as+retrieved+by+MISR&rft.au=Kahn%2C+Ralph+A%3BGaitley%2C+Barbara+J&rft.aulast=Kahn&rft.aufirst=Ralph&rft.date=2015-05-01&rft.volume=120&rft.issue=9&rft.spage=4248&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2015JD023322 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-07-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Aerosols; Mathematical models; Contamination; Classification; Albedo; Climatology; Mapping; Identification keys; Imaging techniques; Clouds; Climate models; Aerosol transport; Algorithms; Global aerosols; Optical depth of aerosols; Remote Sensing; Satellite Technology; Climates; Standards DO - http://dx.doi.org/10.1002/2015JD023322 ER - TY - JOUR T1 - Transient liquid water and water activity at Gale Crater on Mars AN - 1692747470; 2015-061873 JF - Nature Geoscience AU - Martin-Torres, F Javier AU - Zorzano, Maria-Paz AU - Valentin-Serrano, Patricia AU - Harri, Ari-Matti AU - Genzer, Maria AU - Kemppinen, Osku AU - Rivera-Valentin, Edgard G AU - Jun, Onsoo AU - Wray, James AU - Madsen, Morten Bo AU - Goetz, Walter AU - McEwen, Alfred S AU - Hardgrove, Craig AU - Renno, Nilton AU - Chevrier, Vincent F AU - Mischna, Michael AU - Navarro-Gonzalez, Rafael AU - Martinez-Frias, Jesus AU - Conrad, Pamela AU - McConnochie, Tim AU - Cockell, Charles AU - Berger, Gilles AU - Vasavada, Ashwin R AU - Sumner, Dawn AU - Vaniman, David Y1 - 2015/05// PY - 2015 DA - May 2015 SP - 357 EP - 361 PB - Nature Publishing Group, London VL - 8 IS - 5 SN - 1752-0894, 1752-0894 KW - water KW - soils KW - albedo KW - Mars KW - variations KW - temperature KW - measurement KW - Gale Crater KW - terrestrial planets KW - models KW - planets KW - humidity KW - transient phenomena KW - Curiosity Rover KW - orbital observations KW - climate KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692747470?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nature+Geoscience&rft.atitle=Transient+liquid+water+and+water+activity+at+Gale+Crater+on+Mars&rft.au=Martin-Torres%2C+F+Javier%3BZorzano%2C+Maria-Paz%3BValentin-Serrano%2C+Patricia%3BHarri%2C+Ari-Matti%3BGenzer%2C+Maria%3BKemppinen%2C+Osku%3BRivera-Valentin%2C+Edgard+G%3BJun%2C+Onsoo%3BWray%2C+James%3BMadsen%2C+Morten+Bo%3BGoetz%2C+Walter%3BMcEwen%2C+Alfred+S%3BHardgrove%2C+Craig%3BRenno%2C+Nilton%3BChevrier%2C+Vincent+F%3BMischna%2C+Michael%3BNavarro-Gonzalez%2C+Rafael%3BMartinez-Frias%2C+Jesus%3BConrad%2C+Pamela%3BMcConnochie%2C+Tim%3BCockell%2C+Charles%3BBerger%2C+Gilles%3BVasavada%2C+Ashwin+R%3BSumner%2C+Dawn%3BVaniman%2C+David&rft.aulast=Martin-Torres&rft.aufirst=F&rft.date=2015-05-01&rft.volume=8&rft.issue=5&rft.spage=357&rft.isbn=&rft.btitle=&rft.title=Nature+Geoscience&rft.issn=17520894&rft_id=info:doi/10.1038%2FNGEO2412 L2 - http://www.nature.com/ngeo/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 30 N1 - Document feature - illus. N1 - Last updated - 2015-07-02 N1 - SubjectsTermNotLitGenreText - albedo; climate; Curiosity Rover; Gale Crater; humidity; Mars; measurement; models; orbital observations; planets; soils; temperature; terrestrial planets; transient phenomena; variations; water DO - http://dx.doi.org/10.1038/NGEO2412 ER - TY - JOUR T1 - Eight-year climatology of dust optical depth on Mars AN - 1692742118; 2015-060428 AB - We have produced a multiannual climatology of airborne dust from martian year 24-31 using multiple datasets of retrieved or estimated column optical depths. The datasets are based on observations of the martian atmosphere from April 1999 to July 2013 made by different orbiting instruments: the Thermal Emission Spectrometer (TES) aboard Mars Global Surveyor, the Thermal Emission Imaging System (THEMIS) aboard Mars Odyssey, and the Mars Climate Sounder (MCS) aboard Mars Reconnaissance Orbiter (MRO). The procedure we have adopted consists of gridding the available retrievals of column dust optical depth (CDOD) from TES and THEMIS nadir observations, as well as the estimates of this quantity from MCS limb observations. Our gridding method calculates averages and uncertainties on a regularly spaced spatio-temporal grid, using an iterative procedure that is weighted in space, time, and retrieval quality. The lack of observations at certain times and locations introduces missing grid points in the maps, which therefore may result in irregularly gridded (i.e. incomplete) fields. In order to evaluate the strengths and weaknesses of the resulting gridded maps, we compare with independent observations of CDOD by PanCam cameras and Mini-TES spectrometers aboard the Mars Exploration Rovers "Spirit" and "Opportunity", by the Surface Stereo Imager aboard the Phoenix lander, and by the Compact Reconnaissance Imaging Spectrometer for Mars aboard MRO. We have statistically analyzed the irregularly gridded maps to provide an overview of the dust climatology on Mars over eight years, specifically in relation to its interseasonal and interannual variability, in addition to provide a basis for instrument intercomparison. Finally, we have produced regularly gridded maps of CDOD by spatially interpolating the irregularly gridded maps using a kriging method. These complete maps are used as dust scenarios in the Mars Climate Database (MCD) version 5, and are useful in many modeling applications. The two datasets for the eight available martian years are publicly available and distributed with open access on the MCD website. JF - Icarus AU - Montabone, L AU - Forget, F AU - Millour, E AU - Wilson, R J AU - Lewis, S R AU - Cantor, Bruce A AU - Kass, D AU - Kleinboehl, A AU - Lemmon, Mark T AU - Smith, M D AU - Wolff, M J Y1 - 2015/05/01/ PY - 2015 DA - 2015 May 01 SP - 65 EP - 95 PB - Elsevier, New York, NY VL - 251 SN - 0019-1035, 0019-1035 KW - Mars Phoenix Lander KW - kriging KW - data processing KW - Mars KW - mapping KW - Mars Exploration Rover KW - Thermal Emission Spectrometer KW - sediments KW - climate KW - CRISM KW - THEMIS KW - clastic sediments KW - statistical analysis KW - Mars Climate Sounder KW - atmosphere KW - Mars Reconnaissance Orbiter KW - Mars Odyssey KW - terrestrial planets KW - planets KW - dust KW - Mars Global Surveyor Program KW - seasonal variations KW - optical depth KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692742118?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Eight-year+climatology+of+dust+optical+depth+on+Mars&rft.au=Montabone%2C+L%3BForget%2C+F%3BMillour%2C+E%3BWilson%2C+R+J%3BLewis%2C+S+R%3BCantor%2C+Bruce+A%3BKass%2C+D%3BKleinboehl%2C+A%3BLemmon%2C+Mark+T%3BSmith%2C+M+D%3BWolff%2C+M+J&rft.aulast=Montabone&rft.aufirst=L&rft.date=2015-05-01&rft.volume=251&rft.issue=&rft.spage=65&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.12.034 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 73 N1 - PubXState - NY N1 - Document feature - illus. N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-07-02 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - atmosphere; clastic sediments; climate; CRISM; data processing; dust; instruments; kriging; mapping; Mars; Mars Climate Sounder; Mars Exploration Rover; Mars Global Surveyor Program; Mars Odyssey; Mars Phoenix Lander; Mars Reconnaissance Orbiter; optical depth; planets; seasonal variations; sediments; statistical analysis; terrestrial planets; THEMIS; Thermal Emission Spectrometer DO - http://dx.doi.org/10.1016/j.icarus.2014.12.034 ER - TY - JOUR T1 - Dust aerosol, clouds, and the atmospheric optical depth record over 5 Mars years of the Mars Exploration Rover mission AN - 1692742083; 2015-060429 AB - Dust aerosol plays a fundamental role in the behavior and evolution of the martian atmosphere. The first five Mars years of Mars Exploration Rover data provide an unprecedented record of the dust load at two sites. This record is useful for characterization of the atmosphere at the sites and as ground truth for orbital observations. Atmospheric extinction optical depths have been derived from solar images after calibration and correction for time-varying dust that has accumulated on the camera windows. The record includes local, regional, and globally extensive dust storms. Comparison with contemporaneous thermal infrared data suggests significant variation in the size of the dust aerosols, with a 1 ?m effective radius during northern summer and a 2 mu m effective radius at the onset of a dust lifting event. The solar longitude (L (sub S) ) 20-136 degrees period is also characterized by the presence of cirriform clouds at the Opportunity site, especially near L (sub S) = 50 degrees and 115 degrees . In addition to water ice clouds, a water ice haze may also be present, and carbon dioxide clouds may be present early in the season. Variations in dust opacity are important to the energy balance of each site, and work with seasonal variations in insolation to control dust devil frequency at the Spirit site. JF - Icarus AU - Lemmon, Mark T AU - Wolff, Michael J AU - Bell, James F, III AU - Smith, Michael D AU - Cantor, Bruce A AU - Smith, Peter H Y1 - 2015/05/01/ PY - 2015 DA - 2015 May 01 SP - 96 EP - 111 PB - Elsevier, New York, NY VL - 251 SN - 0019-1035, 0019-1035 KW - imagery KW - Spirit Rover KW - data processing KW - Mars KW - calibration KW - energy balance KW - dust devils KW - carbon dioxide KW - Mars Exploration Rover KW - ground truth KW - ice KW - sediments KW - orbital observations KW - dust storms KW - clouds KW - precision KW - Opportunity Rover KW - clastic sediments KW - atmosphere KW - terrestrial planets KW - planets KW - dust KW - insolation KW - aerosols KW - seasonal variations KW - corrections KW - optical depth KW - accuracy KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692742083?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Dust+aerosol%2C+clouds%2C+and+the+atmospheric+optical+depth+record+over+5+Mars+years+of+the+Mars+Exploration+Rover+mission&rft.au=Lemmon%2C+Mark+T%3BWolff%2C+Michael+J%3BBell%2C+James+F%2C+III%3BSmith%2C+Michael+D%3BCantor%2C+Bruce+A%3BSmith%2C+Peter+H&rft.aulast=Lemmon&rft.aufirst=Mark&rft.date=2015-05-01&rft.volume=251&rft.issue=&rft.spage=96&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.03.029 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 66 N1 - PubXState - NY N1 - Document feature - illus. N1 - Last updated - 2015-07-02 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - accuracy; aerosols; atmosphere; calibration; carbon dioxide; clastic sediments; clouds; corrections; data processing; dust; dust devils; dust storms; energy balance; ground truth; ice; imagery; insolation; Mars; Mars Exploration Rover; Opportunity Rover; optical depth; orbital observations; planets; precision; seasonal variations; sediments; Spirit Rover; terrestrial planets DO - http://dx.doi.org/10.1016/j.icarus.2014.03.029 ER - TY - JOUR T1 - Initiation and growth of Martian ice lenses AN - 1692741930; 2015-060435 AB - Water ice in the upper meters of the martian regolith is a major volatile reservoir. Although the geographic extent, burial depth, and thermal stability of this shallow ice are well understood, its origin, history, and stratigraphy are not. Over the past decade, a growing body of observational evidence has indicated that shallow ground ice exceeds the pore volume of its host soil over large regions of both martian hemispheres. This is confounding, given that (1) the physical theory that accurately predicts the location of ground ice also assumes that ice should be pore-filling in the upper meter of regolith, and (2) the Phoenix spacecraft uncovered far more pore-filling ice than excess ice at its landing site in the northern hemisphere. The development of ice lenses by low-temperature in situ segregation - analogous to the processes that generate frost heave on Earth - has been hypothesized to explain shallow excess ice on Mars. We have developed a numerical model of ice lens initiation and growth in the martian environment, and used it to test this hypothesis for the first time. We carried out a large suite of numerical simulations in order to place quantitative constraints on the timing and location of ice lens initiation, and on the magnitude of ice lens growth in a variety of host soils. We find that ice lens initiation is a ubiquitous process in the martian high latitudes, but the ultimate magnitude of lens growth, or frost heave, is sensitive to the properties of the host soil. Depending on the specific properties of martian soils, in situ segregation may be a very slow process sufficient to explain the excess ice observed in the Dodo-Goldilocks trench at the Phoenix landing site, but without regionally significant effects. Alternatively, if clay-sized particles or perchlorate salts are present, in situ segregation may be a vigorous process that has significantly affected the stratigraphy of ground ice in the upper meter of regolith throughout the high latitudes. JF - Icarus AU - Sizemore, Hanna G AU - Zent, Aaron P AU - Rempel, Alan W Y1 - 2015/05/01/ PY - 2015 DA - 2015 May 01 SP - 191 EP - 210 PB - Elsevier, New York, NY VL - 251 SN - 0019-1035, 0019-1035 KW - clay KW - Mars Phoenix Lander KW - frost heaving KW - Mars KW - Inuvik Clay KW - freezing KW - simulation KW - temperature KW - Chena Silt KW - Amazonian KW - ice KW - sediments KW - water content KW - ground ice KW - climate KW - soils KW - numerical models KW - annual variations KW - clastic sediments KW - Tomokomai Clay KW - ice lenses KW - porosity KW - perchlorate KW - terrestrial planets KW - planets KW - natural analogs KW - seasonal variations KW - regolith KW - permeability KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692741930?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Initiation+and+growth+of+Martian+ice+lenses&rft.au=Sizemore%2C+Hanna+G%3BZent%2C+Aaron+P%3BRempel%2C+Alan+W&rft.aulast=Sizemore&rft.aufirst=Hanna&rft.date=2015-05-01&rft.volume=251&rft.issue=&rft.spage=191&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.04.013 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 77 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-07-02 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - Amazonian; annual variations; Chena Silt; clastic sediments; clay; climate; freezing; frost heaving; ground ice; ice; ice lenses; Inuvik Clay; Mars; Mars Phoenix Lander; natural analogs; numerical models; perchlorate; permeability; planets; porosity; regolith; seasonal variations; sediments; simulation; soils; temperature; terrestrial planets; Tomokomai Clay; water content DO - http://dx.doi.org/10.1016/j.icarus.2014.04.013 ER - TY - JOUR T1 - Mars' water vapor mapping by the SPICAM IR spectrometer; five Martian years of observations AN - 1692741862; 2015-060427 AB - The SPICAM IR instrument on the Mars Express mission continuously observes the water vapor in the martian atmosphere starting from 2004 in the 1.38-mu m spectral band. The water vapor column abundance is retrieved from nadir observations to characterize its spatial, seasonal and interannual variations. A reference set of SPICAM water vapor column abundances (zonally averaged) covering the time period from 2004 to 2013 (martian years 27-31) is available for a grid of 2 degrees Ls X 2 degrees latitude, along with an average reference map of water vapor abundance combining all the martian years of Mars Express observations. Compared to the previous data retrieval by Fedorova et al. (Fedorova, A., Korablev, O., Bertaux, J.L., Rodin, A., Kiselev, A., Perrier, S. [2006]. J. Geophys. Res. 111, E09S08) the new processing algorithm includes many improvements concerning the calibration and assumed parameters. A major improvement is the account for aerosol scattering based on dust and water ice cloud optical depths measured by THEMIS/Mars Odyssey (Smith, M.D. [2009]. Icarus 202, 444-452). The account for multiple scattering by aerosol particles increases the retrieved water vapor amount by ?10% in polar areas during summer, and up to 60-70% for large solar zenith angles. The sensitivity of the results to aerosol properties, surface albedo, solar spectrum, and water vapor vertical distribution has also been studied. The retrieved water vapor reveals nominal annual cycle with maximum abundance of about 60-70 pr. mu m for the Northern summer and -20 pr. mu m for the Southern summer. The annual average amount of water has been estimated to be of 10-20 pr. mu m, in agreement with other measurements. From year to year the seasonal cycle of water vapor abundance is very stable. An observed decrease during the MY 28 global dust storm cannot be fully attributed to the masking effect of dust, and indicates a real decrease of water amount near or above the surface. No evidence of diurnal variation of column water vapor amount was found, even though the 1.38-mu m measurements are sensitive to the few lowermost kilometers above the surface. JF - Icarus AU - Trokhimovskiy, Alexander AU - Fedorova, Anna AU - Korablev, Oleg AU - Montmessin, Franck AU - Bertaux, Jean-Loup AU - Rodin, Alexander AU - Smith, Michael D Y1 - 2015/05/01/ PY - 2015 DA - 2015 May 01 SP - 50 EP - 64 PB - Elsevier, New York, NY VL - 251 SN - 0019-1035, 0019-1035 KW - SPectroscopy for the Investigation of the Characteristics of the Atmosphere of Mars KW - albedo KW - water vapor KW - Mars KW - mapping KW - calibration KW - SPICAM experiment KW - infrared spectra KW - ice KW - sediments KW - spectra KW - orbital observations KW - Mars Express KW - algorithms KW - dust storms KW - clouds KW - clastic sediments KW - cyclic processes KW - atmosphere KW - terrestrial planets KW - planets KW - dust KW - aerosols KW - seasonal variations KW - latitude KW - optical depth KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692741862?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Mars%27+water+vapor+mapping+by+the+SPICAM+IR+spectrometer%3B+five+Martian+years+of+observations&rft.au=Trokhimovskiy%2C+Alexander%3BFedorova%2C+Anna%3BKorablev%2C+Oleg%3BMontmessin%2C+Franck%3BBertaux%2C+Jean-Loup%3BRodin%2C+Alexander%3BSmith%2C+Michael+D&rft.aulast=Trokhimovskiy&rft.aufirst=Alexander&rft.date=2015-05-01&rft.volume=251&rft.issue=&rft.spage=50&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.10.007 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 73 N1 - PubXState - NY N1 - Document feature - illus. N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-07-02 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - aerosols; albedo; algorithms; atmosphere; calibration; clastic sediments; clouds; cyclic processes; dust; dust storms; ice; infrared spectra; latitude; mapping; Mars; Mars Express; optical depth; orbital observations; planets; seasonal variations; sediments; spectra; SPectroscopy for the Investigation of the Characteristics of the Atmosphere of Mars; SPICAM experiment; terrestrial planets; water vapor DO - http://dx.doi.org/10.1016/j.icarus.2014.10.007 ER - TY - JOUR T1 - Mapping TRMM TMPA into Average Recurrence Interval for Monitoring Extreme Precipitation Events AN - 1683349790; PQ0001585985 AB - A prototype online extreme precipitation monitoring system is developed from the TRMM TMPA near-real-time precipitation product. The system utilizes estimated equivalent average recurrence interval (ARI) for up-to-date precipitation accumulations from the past 1, 2, 3, 5, 7, and 10 days to locate locally severe events. The mapping of precipitation accumulations into ARI is based on local statistics fitted into generalized extreme value (GEV) distribution functions. Initial evaluation shows that the system captures historic extreme precipitation events quite well. The system provides additional rarity information for ongoing precipitation events based on local climatology that could be used by the general public and decision makers for various hazard management applications. Limitations of the TRMM ARI due to short record length and data accuracy are assessed through comparison with long-term high-resolution gauge-based rainfall datasets from the NOAA Climate Prediction Center and the Asian Precipitation-Highly-Resolved Observational Data Integration Toward Evaluation of Water Resources (APHRODITE) project. TMPA-based extreme climatology captures extreme distribution patterns from gauge data, but a strong tendency to overestimate from TMPA over regimes of complex orography exists. JF - Journal of Applied Meteorology and Climatology AU - Zhou, Yaping AU - Lau, William KM AU - Huffman, George J AD - Goddard Earth Sciences Technology and Research, Morgan State University, Baltimore, and Earth Sciences Division, NASA Goddard Space Flight Center, Greenbelt, Maryland Y1 - 2015/05// PY - 2015 DA - May 2015 SP - 979 EP - 995 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 54 IS - 5 SN - 1558-8424, 1558-8424 KW - Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; Environment Abstracts KW - Statistical techniques KW - Emergency response KW - Societal impacts KW - Prediction KW - Historical account KW - Statistics KW - Water resources data KW - Climate prediction KW - Prototypes KW - Rainfall KW - Ecological distribution KW - Statistical analysis KW - Water resources KW - Evaluation KW - Distribution Patterns KW - Hazards KW - Precipitation monitoring KW - Meteorology KW - Climatology KW - Mapping KW - Precipitation-water resources relationships KW - Monitoring systems KW - Climate models KW - Precipitation KW - Extreme values KW - Orography KW - Tropical Rainfall Measuring Mission (TRMM) KW - Monitoring KW - Accumulation KW - Future climates KW - Climate and water resources KW - Q2 09243:Structure, mechanics and thermodynamics KW - SW 5080:Evaluation, processing and publication KW - ENA 16:Renewable Resources-Water KW - AQ 00005:Underground Services and Water Use KW - M2 551.501:Methods of Observation/Computations (551.501) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1683349790?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Applied+Meteorology+and+Climatology&rft.atitle=Mapping+TRMM+TMPA+into+Average+Recurrence+Interval+for+Monitoring+Extreme+Precipitation+Events&rft.au=Zhou%2C+Yaping%3BLau%2C+William+KM%3BHuffman%2C+George+J&rft.aulast=Zhou&rft.aufirst=Yaping&rft.date=2015-05-01&rft.volume=54&rft.issue=5&rft.spage=979&rft.isbn=&rft.btitle=&rft.title=Journal+of+Applied+Meteorology+and+Climatology&rft.issn=15588424&rft_id=info:doi/10.1175%2FJAMC-D-14-0269.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-01 N1 - Number of references - 61 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Hazards; Prototypes; Climate prediction; Ecological distribution; Water resources; Climatology; Extreme values; Monitoring systems; Water resources data; Climate models; Precipitation monitoring; Statistical analysis; Tropical Rainfall Measuring Mission (TRMM); Precipitation; Orography; Precipitation-water resources relationships; Climate and water resources; Future climates; Historical account; Rainfall; Meteorology; Mapping; Prediction; Distribution Patterns; Evaluation; Statistics; Monitoring; Accumulation DO - http://dx.doi.org/10.1175/JAMC-D-14-0269.1 ER - TY - JOUR T1 - Searching for Large Raindrops: A Global Summary of Two-Dimensional Video Disdrometer Observations AN - 1683349259; PQ0001585979 AB - A dataset containing 9637 h of two-dimensional video disdrometer observations consisting of more than 240 million raindrops measured at diverse climatological locations was compiled to help characterize underlying drop size distribution (DSD) assumptions that are essential to make precise retrievals of rainfall using remote sensing platforms. This study concentrates on the tail of the DSD, which largely impacts rainfall retrieval algorithms that utilize radar reflectivity. The maximum raindrop diameter was a median factor of 1.8 larger than the mass-weighted mean diameter and increased with rainfall rate. Only 0.4% of the 1-min DSD spectra were found to contain large raindrops exceeding 5 mm in diameter. Large raindrops were most abundant at the tropical locations, especially in Puerto Rico, and were largely concentrated during the spring, especially at subtropical locations. Giant raindrops exceeding 8 mm in diameter occurred at tropical, subtropical, and high-latitude continental locations. The greatest numbers of giant raindrops were found in the subtropical locations, with the largest being a 9.7-mm raindrop that occurred in northern Oklahoma during the passage of a hail-producing thunderstorm. These results suggest large raindrops are more likely to fall from clouds that contain hail, especially those raindrops exceeding 8 mm in diameter. JF - Journal of Applied Meteorology and Climatology AU - Gatlin, Patrick N AU - Thurai, Merhala AU - Bringi, V N AU - Petersen, Walter AU - Wolff, David AU - Tokay, Ali AU - Carey, Lawrence AU - Wingo, Matthew AD - NASA Marshall Space Flight Center, Huntsville, Alabama Y1 - 2015/05// PY - 2015 DA - May 2015 SP - 1069 EP - 1089 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 54 IS - 5 SN - 1558-8424, 1558-8424 KW - Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Hail KW - Rainfall KW - Cloud microphysics KW - Drop size distribution KW - Radars/Radar observations KW - Remote sensing KW - Remote Sensing KW - Thunderstorm statistics KW - Reflectance KW - Fluid Drops KW - Algorithms KW - Thunderstorms KW - USA, Oklahoma KW - Rainfall Rate KW - Radar reflectivity KW - Thunderstorm location KW - Climatology KW - Audiovisual materials KW - Climate KW - Clouds KW - Disdrometers KW - Thunderstorm activity KW - ASW, Caribbean Sea, Greater Antilles, Puerto Rico KW - Radar KW - Rain KW - Size distribution KW - Q2 09243:Structure, mechanics and thermodynamics KW - SW 5040:Data acquisition KW - M2 551.578.7:Solid (551.578.7) KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1683349259?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Applied+Meteorology+and+Climatology&rft.atitle=Searching+for+Large+Raindrops%3A+A+Global+Summary+of+Two-Dimensional+Video+Disdrometer+Observations&rft.au=Gatlin%2C+Patrick+N%3BThurai%2C+Merhala%3BBringi%2C+V+N%3BPetersen%2C+Walter%3BWolff%2C+David%3BTokay%2C+Ali%3BCarey%2C+Lawrence%3BWingo%2C+Matthew&rft.aulast=Gatlin&rft.aufirst=Patrick&rft.date=2015-05-01&rft.volume=54&rft.issue=5&rft.spage=1069&rft.isbn=&rft.btitle=&rft.title=Journal+of+Applied+Meteorology+and+Climatology&rft.issn=15588424&rft_id=info:doi/10.1175%2FJAMC-D-14-0089.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-01 N1 - Number of references - 93 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Audiovisual materials; Reflectance; Hail; Radar; Climate; Remote sensing; Climatology; Size distribution; Clouds; Thunderstorm activity; Drop size distribution; Thunderstorm statistics; Disdrometers; Thunderstorm location; Radar reflectivity; Algorithms; Thunderstorms; Remote Sensing; Rainfall Rate; Rainfall; Fluid Drops; Rain; USA, Oklahoma; ASW, Caribbean Sea, Greater Antilles, Puerto Rico DO - http://dx.doi.org/10.1175/JAMC-D-14-0089.1 ER - TY - JOUR T1 - Uncertainties of Temperature Measurements on Snow-Covered Land and Sea Ice from In Situ and MODIS Data during BROMEX AN - 1683349157; PQ0001585981 AB - The Bromine, Ozone, and Mercury Experiment (BROMEX) was conducted in March and April of 2012 near Barrow, Alaska, to investigate impacts of Arctic sea ice reduction on chemical processes. During BROMEX, multiple sensors were deployed to measure air and surface temperature. The uncertainties in temperature measurement on snow-covered land and sea ice surfaces were examined using in situ data and temperature measurements that were derived from the Moderate Resolution Imaging Spectroradiometer (MODIS) and are part of the Terra and Aqua ice-surface temperature and land-surface temperature (LST) standard data products. Following an similar to 24-h cross-calibration study, two Thermochrons (small temperature-sensing devices) were deployed at each of three field sites: a sea ice site in the Chukchi Sea, a mixed-cover site, and a homogeneous tundra site. At each site, one Thermochron was shielded from direct sunlight and one was left unshielded, and they were placed on top of the snow or ice. The best agreement between the Thermochron- and MODIS-derived temperatures was found between the shielded Thermochrons and the Aqua MODIS LSTs, with an average agreement of 0.6 degree plus or minus 2.0 degree C (sample size of 84) at the homogeneous tundra site. The results highlight some uncertainties associated with obtaining consistent air and surface temperature measurements in the harsh Arctic environment, using both in situ and satellite sensors. It is important to minimize uncertainties that could introduce biases in long-term temperature trends. JF - Journal of Applied Meteorology and Climatology AU - Hall, Dorothy K AU - Nghiem, Son V AU - Rigor, Ignatius G AU - Miller, Jeffrey A AD - Cryospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland Y1 - 2015/05// PY - 2015 DA - May 2015 SP - 966 EP - 978 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 54 IS - 5 SN - 1558-8424, 1558-8424 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Snow cover KW - Temperature KW - Instrumentation/sensors KW - Remote sensing KW - Satellite observations KW - Remote Sensing KW - INE, Chukchi Sea KW - Surface temperatures KW - Ozone measurements KW - Sensors KW - Arctic environment KW - Arctic sea ice KW - Tundra KW - Sea Ice KW - MODIS (Moderate Resolution Imaging Spectrometer) KW - Climatology KW - Arctic KW - Size KW - Ozone KW - Marine KW - PNW, USA, Alaska, Barrow KW - Temperature measurement KW - Snow KW - Temperature measurements KW - Imaging techniques KW - PN, Arctic KW - Satellite data KW - Sea ice KW - Surface temperature measurements KW - Mercury KW - Standards KW - Temperature trends KW - SW 5010:Network design KW - Q2 09393:Remote geosensing KW - M2 551.326:Floating Ice (551.326) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1683349157?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Applied+Meteorology+and+Climatology&rft.atitle=Uncertainties+of+Temperature+Measurements+on+Snow-Covered+Land+and+Sea+Ice+from+In+Situ+and+MODIS+Data+during+BROMEX&rft.au=Hall%2C+Dorothy+K%3BNghiem%2C+Son+V%3BRigor%2C+Ignatius+G%3BMiller%2C+Jeffrey+A&rft.aulast=Hall&rft.aufirst=Dorothy&rft.date=2015-05-01&rft.volume=54&rft.issue=5&rft.spage=966&rft.isbn=&rft.btitle=&rft.title=Journal+of+Applied+Meteorology+and+Climatology&rft.issn=15588424&rft_id=info:doi/10.1175%2FJAMC-D-14-0175.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-01 N1 - Number of references - 33 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Sea ice; Sensors; Temperature measurement; Snow; Mercury; Climatology; Imaging techniques; Ozone; Size; Surface temperatures; Ozone measurements; Arctic environment; Satellite data; Arctic sea ice; Surface temperature measurements; Temperature trends; MODIS (Moderate Resolution Imaging Spectrometer); Snow cover; Temperature measurements; Remote Sensing; Tundra; Sea Ice; Temperature; Standards; Arctic; PN, Arctic; PNW, USA, Alaska, Barrow; INE, Chukchi Sea; Marine DO - http://dx.doi.org/10.1175/JAMC-D-14-0175.1 ER - TY - JOUR T1 - Assessing impact of climate change on Mundra mangrove forest ecosystem, Gulf of Kutch, western coast of India: a synergistic evaluation using remote sensing AN - 1680451592; PQ0001488031 AB - Mangrove cover changes have globally raised the apprehensions as the changes influence the coastal climate as well as the marine ecosystem services. The main goals of this research are focused on the monitoring of land cover and mangrove spatial changes particularly for the Mundra forest in the western coast of Gujarat state, India, which is famous for its unique mangrove bio-diversity. The multi-temporal Indian Remote Sensing (IRS) Linear Imaging Self Scanning (LISS)-II (IRS-1B) and III (IRS P6/RESOURCESAT-1) images captured in the year 1994 and 2010 were utilized for the spatio-temporal analysis of the area. The land cover and mangrove density was estimated by a unique hybrid classification which consists of K means unsupervised following maximum likelihood classification (MLC) supervised classification-based approach. The vegetation and non-vegetation layers has been extracted and separated by unsupervised classification technique while the training-based MLC was applied on the separated vegetation and non-vegetation classes to classify them into 11 land use/land cover classes. The climatic variables of the area involves wind, temperature, dew point, precipitation, and mean sea level investigated for the period of 17 years over the site. To understand the driving factors, the anthropogenic variables were also taken into account such as historical population datasets. The overall analysis indicates a significant change in the frequency and magnitude of sea-level rise from 1994 to 2010. The analysis of the meteorological variables indicates a high pressure and changes in mangrove density during the 17 years of time, which reveals that if appropriate actions are not initiated soon, the Mundra mangroves might become the victims of climate change-induced habitat loss. After analyzing all the factors, some recommendations and suggestions are provided for effective mangrove conservation and resilience, which could be used by forest official to protect this precious ecosystem. JF - Theoretical and Applied Climatology AU - Srivastava, Prashant K AU - Mehta, Abhinav AU - Gupta, Manika AU - Singh, Sudhir Kumar AU - Islam, Tanvir AD - Hydrological Sciences, NASA Goddard Space Flight Center, Greenbelt, MD, USA, prashant.k.srivastava@nasa.gov Y1 - 2015/05// PY - 2015 DA - May 2015 SP - 685 EP - 700 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 120 IS - 3-4 SN - 0177-798X, 0177-798X KW - Sustainability Science Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Oceanic Abstracts; Meteorological & Geoastrophysical Abstracts KW - Resource management KW - Sea level KW - Rainfall KW - Climate change KW - Sea level rise KW - Remote sensing KW - Biological diversity KW - Forests KW - ISW, India, Gujarat KW - Climate and vegetation KW - Mean sea level KW - Applied climatology KW - Classification KW - Hybrids KW - Marine ecosystems KW - Climatology KW - Forest ecosystems KW - Temperature KW - Environmental impact KW - Vegetation KW - Precipitation KW - Land use KW - Ecosystem disturbance KW - Coastal zone KW - Coastal climates KW - Nature conservation KW - Conservation KW - Mangroves KW - Sea level changes KW - Q2 09243:Structure, mechanics and thermodynamics KW - M2 551.583:Variations (551.583) KW - M3 1010:Issues in Sustainable Development KW - O 4060:Pollution - Environment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680451592?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Theoretical+and+Applied+Climatology&rft.atitle=Assessing+impact+of+climate+change+on+Mundra+mangrove+forest+ecosystem%2C+Gulf+of+Kutch%2C+western+coast+of+India%3A+a+synergistic+evaluation+using+remote+sensing&rft.au=Srivastava%2C+Prashant+K%3BMehta%2C+Abhinav%3BGupta%2C+Manika%3BSingh%2C+Sudhir+Kumar%3BIslam%2C+Tanvir&rft.aulast=Srivastava&rft.aufirst=Prashant&rft.date=2015-05-01&rft.volume=120&rft.issue=3-4&rft.spage=685&rft.isbn=&rft.btitle=&rft.title=Theoretical+and+Applied+Climatology&rft.issn=0177798X&rft_id=info:doi/10.1007%2Fs00704-014-1206-z LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-01 N1 - Number of references - 84 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Resource management; Classification; Nature conservation; Remote sensing; Environmental impact; Climatology; Ecosystem disturbance; Mangroves; Sea level changes; Climate and vegetation; Mean sea level; Applied climatology; Forest ecosystems; Coastal climates; Climate change; Sea level rise; Conservation; Marine ecosystems; Precipitation; Land use; Sea level; Rainfall; Temperature; Vegetation; Forests; Biological diversity; Coastal zone; Hybrids; ISW, India, Gujarat DO - http://dx.doi.org/10.1007/s00704-014-1206-z ER - TY - JOUR T1 - WRF Dynamical Downscaling and Bias Correction Schemes for NCEP Estimated Hydro-Meteorological Variables AN - 1680448612; PQ0001483774 AB - Rainfall and Reference Evapotranspiration (ETo) are the most fundamental and significant variables in hydrological modelling. However, these variables are generally not available over ungauged catchments. ETo estimation usually needs measurements of weather variables such as wind speed, air temperature, solar radiation and dew point. After the development of reanalysis global datasets such as the National Centre for Environmental Prediction (NCEP) and high performance modelling framework Weather Research and Forecasting (WRF) model, it is now possible to estimate the rainfall and ETo for any coordinates. In this study, the WRF modelling system was employed to downscale the global NCEP reanalysis datasets over the Brue catchment, England, U.K. After downscaling, two statistical bias correction schemes were used, the first was based on sophisticated computing algorithms i.e., Relevance Vector Machine (RVM), while the second was based on the more simple Generalized Linear Model (GLM). The statistical performance indices for bias correction such as %Bias, index of agreement (d), Root Mean Square Error (RMSE), and Correlation (r) indicated that the RVM model, on the whole, displayed a more accomplished bias correction of the variability of rainfall and ETo in comparison to the GLM. The study provides important information on the performance of WRF derived hydro-meteorological variables using NCEP global reanalysis datasets and statistical bias correction schemes which can be used in numerous hydro-meteorological applications. JF - Water Resources Management AU - Srivastava, Prashant K AU - Islam, Tanvir AU - Gupta, Manika AU - Petropoulos, George AU - Dai, Qiang AD - Hydrological Sciences, NASA Goddard Space Flight Center, Greenbelt, MD, USA, prashant.k.srivastava@nasa.gov Y1 - 2015/05// PY - 2015 DA - May 2015 SP - 2267 EP - 2284 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 29 IS - 7 SN - 0920-4741, 0920-4741 KW - Environment Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Aqualine Abstracts KW - Catchment area KW - Prediction KW - Variability KW - Dew point KW - Rainfall KW - Water resources KW - Water Resources Management KW - Solar radiation KW - Air temperature KW - Dew KW - Wind speed KW - Hydrologic Models KW - Weather forecasting KW - Weather KW - Water resources management KW - British Isles, England KW - Catchment Areas KW - Velocity KW - Evapotranspiration KW - Performance Evaluation KW - Water management KW - Catchments KW - SW 0810:General KW - Q5 08502:Methods and instruments KW - AQ 00003:Monitoring and Analysis of Water and Wastes KW - ENA 01:Air Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680448612?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Water+Resources+Management&rft.atitle=WRF+Dynamical+Downscaling+and+Bias+Correction+Schemes+for+NCEP+Estimated+Hydro-Meteorological+Variables&rft.au=Srivastava%2C+Prashant+K%3BIslam%2C+Tanvir%3BGupta%2C+Manika%3BPetropoulos%2C+George%3BDai%2C+Qiang&rft.aulast=Srivastava&rft.aufirst=Prashant&rft.date=2015-05-01&rft.volume=29&rft.issue=7&rft.spage=2267&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Management&rft.issn=09204741&rft_id=info:doi/10.1007%2Fs11269-015-0940-z LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-01 N1 - Number of references - 58 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Wind speed; Prediction; Catchment area; Dew point; Water management; Water resources; Solar radiation; Weather forecasting; Air temperature; Weather; Water resources management; Rainfall; Catchments; Velocity; Evapotranspiration; Variability; Performance Evaluation; Hydrologic Models; Catchment Areas; Water Resources Management; Dew; British Isles, England DO - http://dx.doi.org/10.1007/s11269-015-0940-z ER - TY - JOUR T1 - Properties of a Mesoscale Convective System in the Context of an Isentropic Analysis AN - 1680440217; PQ0001525585 AB - Application of an isentropic analysis of convective motions to a simulated mesoscale convective system is presented. The approach discriminates the vertical mass transport in terms of equivalent potential temperature. The scheme separates rising air at high entropy from subsiding air at low entropy. This also filters out oscillatory motions associated with gravity waves and isolates the overturning motions associated with convection and mesoscale circulation. The mesoscale convective system is additionally partitioned into stratiform and convective regions based on the radar reflectivity field. For each of the subregions, the mass transport derived in terms of height and an isentropic invariant of the flow is analyzed. The difference between the Eulerian mass flux and the isentropic counterpart is a significant and symmetric contribution of the buoyant oscillations to the upward and downward mass fluxes. Filtering out these oscillations results in substantial reduction of the diagnosed downward-to-upward convective mass flux ratio. The analysis is also applied to graupel and snow mixing ratios and number concentrations, illustrating the relationship of the particle formation process to the updrafts. JF - Journal of the Atmospheric Sciences AU - Mrowiec, Agnieszka A AU - Pauluis, OM AU - Fridlind, A M AU - Ackerman, A S AD - Columbia University, and NASA Goddard Institute for Space Studies, New York, New York Y1 - 2015/05// PY - 2015 DA - May 2015 SP - 1945 EP - 1962 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 72 IS - 5 SN - 0022-4928, 0022-4928 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Convection KW - Convective storms KW - Mass fluxes/transport KW - Mesoscale systems KW - Vertical motion KW - Isentropic analysis KW - Gravity Waves KW - Convection development KW - Mass transport KW - Mesoscale features KW - Mixing KW - Updrafts KW - Mass flux KW - Convective motion KW - Radar reflectivity KW - Mesoscale convective systems KW - Sedimentation KW - Entropy KW - Snow KW - Temperature KW - Mesoscale circulation KW - Filters KW - Potential temperature KW - Radar KW - Convective activity KW - Analytical techniques KW - Gravity waves KW - Particle formation KW - Equivalent potential temperature KW - Fluctuations KW - Q2 09393:Remote geosensing KW - SW 0810:General KW - M2 551.578.4:Crystalline (551.578.4) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680440217?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+Atmospheric+Sciences&rft.atitle=Properties+of+a+Mesoscale+Convective+System+in+the+Context+of+an+Isentropic+Analysis&rft.au=Mrowiec%2C+Agnieszka+A%3BPauluis%2C+OM%3BFridlind%2C+A+M%3BAckerman%2C+A+S&rft.aulast=Mrowiec&rft.aufirst=Agnieszka&rft.date=2015-05-01&rft.volume=72&rft.issue=5&rft.spage=1945&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+Atmospheric+Sciences&rft.issn=00224928&rft_id=info:doi/10.1175%2FJAS-D-14-0139.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-01 N1 - Number of references - 49 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Convection; Snow; Potential temperature; Gravity waves; Analytical techniques; Mesoscale features; Mass transport; Sedimentation; Entropy; Convection development; Mesoscale circulation; Mass flux; Updrafts; Convective motion; Isentropic analysis; Radar reflectivity; Convective activity; Equivalent potential temperature; Particle formation; Mesoscale convective systems; Filters; Gravity Waves; Radar; Temperature; Mixing; Fluctuations DO - http://dx.doi.org/10.1175/JAS-D-14-0139.1 ER - TY - JOUR T1 - Small-scale waves on Jupiter; a reanalysis of New Horizons, Voyager, and Galileo data AN - 1832625717; 742165-7 AB - Jupiter's equator-encircling mesoscale waves were a distinguishing feature observed during the New Horizons Jupiter flyby. Measured velocities indicated eastward propagation, inconsistent with standing wave models developed after the Voyager encounters. We present revised New Horizons mesoscale wave velocities of 164 to 176 m/s, approximately 90 m/s higher than the tropospheric zonal winds on that date, while Voyager and Galileo mesoscale waves do not show any apparent motion. This is consistent with an eastward propagating inertia-gravity or Kelvin wave, or a wave propagating with the wind at certain altitudes, given proper vertical wind shears. New Horizons high solar phase angle methane band observations show wave crest shadows or aerosol clearing, implying altitudes above the cloud deck for the observed features. New Horizons and Voyager data also indicate that wave trains have lifetimes exceeding two Jovian rotations. Abstract Copyright (2015), . American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Simon, A A AU - Li, L AU - Reuter, D C Y1 - 2015/04/28/ PY - 2015 DA - 2015 Apr 28 SP - 2612 EP - 2618 PB - American Geophysical Union, Washington, DC VL - 42 IS - 8 SN - 0094-8276, 0094-8276 KW - clouds KW - planets KW - gravity field KW - waves KW - rotation KW - Jupiter KW - troposphere KW - outer planets KW - winds KW - giant planets KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832625717?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=Small-scale+waves+on+Jupiter%3B+a+reanalysis+of+New+Horizons%2C+Voyager%2C+and+Galileo+data&rft.au=Simon%2C+A+A%3BLi%2C+L%3BReuter%2C+D+C&rft.aulast=Simon&rft.aufirst=A&rft.date=2015-04-28&rft.volume=42&rft.issue=8&rft.spage=2612&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL063433 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Number of references - 22 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2017-01-24 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - clouds; giant planets; gravity field; Jupiter; outer planets; planets; rotation; troposphere; waves; winds DO - http://dx.doi.org/10.1002/2015GL063433 ER - TY - NEWS T1 - "Hubble" - One Word Says It All AN - 1676040055 JF - UPI Space Daily AU - Felicia Chou for NASA News Y1 - 2015/04/28/ PY - 2015 DA - 2015 Apr 28 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1676040055?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=%22Hubble%22+-+One+Word+Says+It+All&rft.au=Felicia+Chou+for+NASA+News&rft.aulast=Felicia+Chou+for+NASA+News&rft.aufirst=&rft.date=2015-04-28&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-04-28 ER - TY - JOUR T1 - Nonequilibrium clumped isotope signals in microbial methane AN - 1703691903; 2015-076427 AB - Methane is a key component in the global carbon cycle, with a wide range of anthropogenic and natural sources. Although isotopic compositions of methane have traditionally aided source identification, the abundance of its multiply substituted "clumped" isotopologues (for example, (super 13) CH (sub 3) D) has recently emerged as a proxy for determining methane-formation temperatures. However, the effect of biological processes on methane's clumped isotopologue signature is poorly constrained. We show that methanogenesis proceeding at relatively high rates in cattle, surface environments, and laboratory cultures exerts kinetic control on (super 13) CH (sub 3) D abundances and results in anomalously elevated formation-temperature estimates. We demonstrate quantitatively that H (sub 2) availability accounts for this effect. Clumped methane thermometry can therefore provide constraints on the generation of methane in diverse settings, including continental serpentinization sites and ancient, deep groundwaters. JF - Science AU - Wang, David T AU - Gruen, Danielle S AU - Sherwood Lollar, Barbara AU - Hinrichs, Kai-Uwe AU - Stewart, Lucy C AU - Holden, James F AU - Hristov, Alexander N AU - Pohlman, John W AU - Morrill, Penny L AU - Koenneke, Martin AU - Delwiche, Kyle B AU - Reeves, Eoghan P AU - Sutcliffe, Chelsea N AU - Ritter, Daniel J AU - Seewald, Jeffrey S AU - McIntosh, Jennifer C AU - Hemond, Harold F AU - Kubo, Michael D AU - Cardace, Dawn AU - Hoehler, Tori M AU - Ono, Shuhei Y1 - 2015/04/24/ PY - 2015 DA - 2015 Apr 24 SP - 428 EP - 431 PB - American Association for the Advancement of Science, Washington, DC VL - 348 IS - 6233 SN - 0036-8075, 0036-8075 KW - methane KW - isotopes KW - isotope ratios KW - C-13/C-12 KW - aliphatic hydrocarbons KW - alkanes KW - stable isotopes KW - temperature KW - geochemical cycle KW - genesis KW - provenance KW - organic compounds KW - biogenic processes KW - carbon KW - hydrocarbons KW - carbon cycle KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703691903?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science&rft.atitle=Nonequilibrium+clumped+isotope+signals+in+microbial+methane&rft.au=Wang%2C+David+T%3BGruen%2C+Danielle+S%3BSherwood+Lollar%2C+Barbara%3BHinrichs%2C+Kai-Uwe%3BStewart%2C+Lucy+C%3BHolden%2C+James+F%3BHristov%2C+Alexander+N%3BPohlman%2C+John+W%3BMorrill%2C+Penny+L%3BKoenneke%2C+Martin%3BDelwiche%2C+Kyle+B%3BReeves%2C+Eoghan+P%3BSutcliffe%2C+Chelsea+N%3BRitter%2C+Daniel+J%3BSeewald%2C+Jeffrey+S%3BMcIntosh%2C+Jennifer+C%3BHemond%2C+Harold+F%3BKubo%2C+Michael+D%3BCardace%2C+Dawn%3BHoehler%2C+Tori+M%3BOno%2C+Shuhei&rft.aulast=Wang&rft.aufirst=David&rft.date=2015-04-24&rft.volume=348&rft.issue=6233&rft.spage=428&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.aaa4326 L2 - http://www.sciencemag.org/magazine LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 36 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2015-11-19 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; biogenic processes; C-13/C-12; carbon; carbon cycle; geochemical cycle; hydrocarbons; isotope ratios; isotopes; methane; genesis; organic compounds; provenance; stable isotopes; temperature DO - http://dx.doi.org/10.1126/science.aaa4326 ER - TY - JOUR T1 - Properties of electromagnetic fields generated by tsunami first arrivals; classification based on the ocean depth AN - 1832639948; 740709-14 AB - Tsunami flow coupled with the geomagnetic field generates electric currents and associated magnetic fields. Although electromagnetic (EM) tsunami signals can be used for analysis and even forecasting tsunami propagation, the dynamically self-consistent effect of shoaling water depth on the fluid + electrodynamics has not been adequately clarified. In this study, we classify tsunami EM phenomena into three cases based on the ocean depth and find that the deeper ocean results in stronger self-induction due to the increase in both tsunami phase velocity and ocean conductance. In this deep-ocean case, the phase lead of the vertical magnetic variation relative to the sea surface elevation is smaller, while an initial rise in the horizontal magnetic component becomes observable prior to tsunami arrival. Furthermore, we confirm that the enhancement of tsunami height in shallower oceans shifts the ocean depth supplying maximum amplitudes of tsunami magnetic fields from approximately 2.0 km to 1.5 km. Abstract Copyright (2015), . American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Minami, Takuto AU - Toh, Hiroaki AU - Tyler, Robert H Y1 - 2015/04/16/ PY - 2015 DA - 2015 Apr 16 SP - 2171 EP - 2178 PB - American Geophysical Union, Washington, DC VL - 42 IS - 7 SN - 0094-8276, 0094-8276 KW - tsunamis KW - sea water KW - geologic hazards KW - sea surface water KW - natural hazards KW - electromagnetic field KW - bathymetry KW - magnetic field KW - electrical currents KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832639948?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=Properties+of+electromagnetic+fields+generated+by+tsunami+first+arrivals%3B+classification+based+on+the+ocean+depth&rft.au=Minami%2C+Takuto%3BToh%2C+Hiroaki%3BTyler%2C+Robert+H&rft.aulast=Minami&rft.aufirst=Takuto&rft.date=2015-04-16&rft.volume=42&rft.issue=7&rft.spage=2171&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL063055 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Number of references - 35 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2017-01-24 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - bathymetry; electrical currents; electromagnetic field; geologic hazards; magnetic field; natural hazards; sea surface water; sea water; tsunamis DO - http://dx.doi.org/10.1002/2015GL063055 ER - TY - JOUR T1 - Saturn's giant storm and global radiant energy AN - 1832637519; 740709-10 AB - We analyze the relationship between Saturn's radiant energies and the 2010 giant storm with the Cassini observations. The storm increased the emitted power in a wide latitudinal band (20-55 degrees N) with a maximum change of 9.2 + or - 0.1% around 45 degrees N from 2010 to 2011. Such a regional change caused the global-average emitted power to increase by nearly equal 2.0 + or - 0.2%. Saturn's giant storm occurs quasiperiodically (i.e., period approximately one Saturnian year), so it is possible that giant storms continuously modify the emitted power if the storm modification has a lifetime close to one Saturnian year. The hemispheric-average emitted power in the southern hemisphere, which was mainly affected by the seasonal change, decreased by 8.5 + or - 0.3% from 2004 to 2013. Our estimates also imply that the 2010 giant storm significantly modified the absorbed solar power of Saturn. The significant temporal variations of radiant powers should be considered in reexamining the value of Saturn's internal heat flux. Abstract Copyright (2015), . American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Li, Liming AU - Jiang, Xun AU - Trammell, Harold J AU - Pan, Yefeng AU - Hernandez, Joseph AU - Conrath, Barney J AU - Gierasch, Peter J AU - Achterberg, Richard K AU - Nixon, Conor A AU - Flasar, F Michael AU - Perez-Hoyos, Santiago AU - West, Robert A AU - Baines, Kevin H AU - Knowles, Benjamin Y1 - 2015/04/16/ PY - 2015 DA - 2015 Apr 16 SP - 2144 EP - 2148 PB - American Geophysical Union, Washington, DC VL - 42 IS - 7 SN - 0094-8276, 0094-8276 KW - Saturn KW - planets KW - heat flux KW - surface features KW - seasonal variations KW - outer planets KW - energy balance KW - giant planets KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832637519?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=Saturn%27s+giant+storm+and+global+radiant+energy&rft.au=Li%2C+Liming%3BJiang%2C+Xun%3BTrammell%2C+Harold+J%3BPan%2C+Yefeng%3BHernandez%2C+Joseph%3BConrath%2C+Barney+J%3BGierasch%2C+Peter+J%3BAchterberg%2C+Richard+K%3BNixon%2C+Conor+A%3BFlasar%2C+F+Michael%3BPerez-Hoyos%2C+Santiago%3BWest%2C+Robert+A%3BBaines%2C+Kevin+H%3BKnowles%2C+Benjamin&rft.aulast=Li&rft.aufirst=Liming&rft.date=2015-04-16&rft.volume=42&rft.issue=7&rft.spage=2144&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL063763 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Number of references - 22 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2017-01-24 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - energy balance; giant planets; heat flux; outer planets; planets; Saturn; seasonal variations; surface features DO - http://dx.doi.org/10.1002/2015GL063763 ER - TY - JOUR T1 - Explicitly-filtered LES for the grid-spacing-independent and discretization-order-independent prediction of a conserved scalar AN - 1709185400; PQ0001529604 AB - The previously proposed methodology of Explicitly Filtered Large Eddy Simulation (EFLES) predicts velocity fields that are grid-spacing and discretization-order independent for single-phase, and for two-phase compressible flows. In the current study, EFLES is tested for determining the predictability of a passive scalar evolution in turbulent flows, and the EFLES results are also compared to equivalent ones obtained with conventional Large Eddy Simulation (LES). It is found that the conventional LES results are not predictive in that refining the grid or increasing the discretization order, or both, does not lead to coincidence of the results. In contrast, refining the grid past the medium spacing for the sixth- and eighth-order discretizations leads to the EFLES results collapsing on a single curve. Thus, the medium grid spacing and sixth discretization order is the most computationally economic predictive simulation. Based on these findings, EFLES computations, the predictions of which are unaffected by numerical errors, are recommended for model validation with experimental data. JF - Computers & Fluids AU - Radhakrishnan, Senthilkumaran AU - Bellan, Josette AD - Jet Propulsion Laboratory, California Institute of Technology, CA 91109, United States, josette.bellan@jpl.nasa.gov Y1 - 2015/04/16/ PY - 2015 DA - 2015 Apr 16 SP - 137 EP - 149 PB - Elsevier B.V., P.O. Box 800 Kidlington Oxford OX5 1DX United Kingdom VL - 111 SN - 0045-7930, 0045-7930 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Large Eddy Simulation predictability KW - Passive scalar KW - Mixing layer KW - Prediction KW - Experimental Data KW - Turbulent flow KW - Turbulent Flow KW - Mathematical models KW - Computers KW - Velocity KW - Simulation KW - Oceanic eddies KW - Compressible Flow KW - Model Studies KW - Eddies KW - Evolution KW - SW 5010:Network design KW - Q2 09424:Applied economics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1709185400?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Computers+%26+Fluids&rft.atitle=Explicitly-filtered+LES+for+the+grid-spacing-independent+and+discretization-order-independent+prediction+of+a+conserved+scalar&rft.au=Radhakrishnan%2C+Senthilkumaran%3BBellan%2C+Josette&rft.aulast=Radhakrishnan&rft.aufirst=Senthilkumaran&rft.date=2015-04-16&rft.volume=111&rft.issue=&rft.spage=137&rft.isbn=&rft.btitle=&rft.title=Computers+%26+Fluids&rft.issn=00457930&rft_id=info:doi/10.1016%2Fj.compfluid.2015.01.003 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-09-01 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Prediction; Turbulent flow; Mathematical models; Simulation; Oceanic eddies; Experimental Data; Turbulent Flow; Eddies; Computers; Velocity; Compressible Flow; Evolution; Model Studies DO - http://dx.doi.org/10.1016/j.compfluid.2015.01.003 ER - TY - NEWS T1 - How To Train Your Astronauts AN - 1672849128 JF - UPI Space Daily AU - Maria Alberty for Ames Research Center Y1 - 2015/04/14/ PY - 2015 DA - 2015 Apr 14 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1672849128?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=How+To+Train+Your+Astronauts&rft.au=Maria+Alberty+for+Ames+Research+Center&rft.aulast=Maria+Alberty+for+Ames+Research+Center&rft.aufirst=&rft.date=2015-04-14&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-04-14 ER - TY - CPAPER T1 - Advances in Antarctic Mantle and Crustal Physics and Implications for Ice Sheet Models and Isostatic Adjustment Measurements T2 - 2015 European Geosciences Union General Assembly AN - 1684412919; 6348814 JF - 2015 European Geosciences Union General Assembly AU - Ivins, Erik AU - Adhikari, Surendra AU - Seroussi, Helene AU - Larour, Eric AU - Wiens, Douglas AU - Scheinert, Mirko AU - Csatho, Beata AU - James, Thomas AU - Nyblade, Andrew Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Ice KW - Glaciation KW - Models UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684412919?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Advances+in+Antarctic+Mantle+and+Crustal+Physics+and+Implications+for+Ice+Sheet+Models+and+Isostatic+Adjustment+Measurements&rft.au=Ivins%2C+Erik%3BAdhikari%2C+Surendra%3BSeroussi%2C+Helene%3BLarour%2C+Eric%3BWiens%2C+Douglas%3BScheinert%2C+Mirko%3BCsatho%2C+Beata%3BJames%2C+Thomas%3BNyblade%2C+Andrew&rft.aulast=Ivins&rft.aufirst=Erik&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - What is the fuss about Big Data T2 - 2015 European Geosciences Union General Assembly AN - 1684412830; 6348649 JF - 2015 European Geosciences Union General Assembly AU - Kuo, Kwo-Sen AU - Ramachandran, Rahul Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Data processing UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684412830?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=What+is+the+fuss+about+Big+Data&rft.au=Kuo%2C+Kwo-Sen%3BRamachandran%2C+Rahul&rft.aulast=Kuo&rft.aufirst=Kwo-Sen&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Assimilation of SMOS Brightness Temperature Observations in the NASA GEOS-5 Land Data Assimilation System T2 - 2015 European Geosciences Union General Assembly AN - 1684410740; 6346542 JF - 2015 European Geosciences Union General Assembly AU - Reichle, Rolf AU - De Lannoy, Gabrielle Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Temperature effects KW - Data collection KW - Data processing KW - Brightness KW - Surface radiation temperature UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684410740?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Assimilation+of+SMOS+Brightness+Temperature+Observations+in+the+NASA+GEOS-5+Land+Data+Assimilation+System&rft.au=Reichle%2C+Rolf%3BDe+Lannoy%2C+Gabrielle&rft.aulast=Reichle&rft.aufirst=Rolf&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Saturn B and C ring studies at multiple wavelengths T2 - 2015 European Geosciences Union General Assembly AN - 1684410187; 6347552 JF - 2015 European Geosciences Union General Assembly AU - Spilker, Linda AU - Deau, Estelle AU - Morishima, Ryuji AU - Filacchione, Gianrico AU - Hedman, Matt AU - Nicholson, Phil AU - Colwell, Josh AU - Bradley, Todd AU - Pilorz, Stu Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Wavelength UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684410187?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Saturn+B+and+C+ring+studies+at+multiple+wavelengths&rft.au=Spilker%2C+Linda%3BDeau%2C+Estelle%3BMorishima%2C+Ryuji%3BFilacchione%2C+Gianrico%3BHedman%2C+Matt%3BNicholson%2C+Phil%3BColwell%2C+Josh%3BBradley%2C+Todd%3BPilorz%2C+Stu&rft.aulast=Spilker&rft.aufirst=Linda&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Uncertainty and Sensitivity analysis of a physically-based landslide model T2 - 2015 European Geosciences Union General Assembly AN - 1684409517; 6346739 JF - 2015 European Geosciences Union General Assembly AU - Yatheendradas, Soni AU - Kirschbaum, Dalia Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Landslides KW - Sensitivity analysis KW - Models UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684409517?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Uncertainty+and+Sensitivity+analysis+of+a+physically-based+landslide+model&rft.au=Yatheendradas%2C+Soni%3BKirschbaum%2C+Dalia&rft.aulast=Yatheendradas&rft.aufirst=Soni&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Long-Term Time Variability of Thermal Emission in Jupiter T2 - 2015 European Geosciences Union General Assembly AN - 1684407990; 6347529 JF - 2015 European Geosciences Union General Assembly AU - Orton, Glenn AU - Fletcher, Leigh AU - Fisher, Brendan AU - Yanamandra-Fisher, Padma AU - Greathouse, Thomas AU - Sinclair, James AU - Greco, Jennifer AU - Boydstun, Kimberly AU - Wakefield, Laura AU - Kim, Sonia AU - Fujiyoshi, Takuya Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Emissions UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684407990?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Long-Term+Time+Variability+of+Thermal+Emission+in+Jupiter&rft.au=Orton%2C+Glenn%3BFletcher%2C+Leigh%3BFisher%2C+Brendan%3BYanamandra-Fisher%2C+Padma%3BGreathouse%2C+Thomas%3BSinclair%2C+James%3BGreco%2C+Jennifer%3BBoydstun%2C+Kimberly%3BWakefield%2C+Laura%3BKim%2C+Sonia%3BFujiyoshi%2C+Takuya&rft.aulast=Orton&rft.aufirst=Glenn&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - MAVEN Observations of Magnetic Reconnection on the Dayside Martian Magnetosphere T2 - 2015 European Geosciences Union General Assembly AN - 1684407434; 6347421 JF - 2015 European Geosciences Union General Assembly AU - DiBraccio, Gina AU - Espley, Jared AU - Connerney, John AU - Brain, David AU - Halekas, Jasper AU - Mitchell, David AU - Harada, Yuki AU - Hara, Takuya Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Atmospheric sciences KW - Earth science KW - Civil engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684407434?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=MAVEN+Observations+of+Magnetic+Reconnection+on+the+Dayside+Martian+Magnetosphere&rft.au=DiBraccio%2C+Gina%3BEspley%2C+Jared%3BConnerney%2C+John%3BBrain%2C+David%3BHalekas%2C+Jasper%3BMitchell%2C+David%3BHarada%2C+Yuki%3BHara%2C+Takuya&rft.aulast=DiBraccio&rft.aufirst=Gina&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - High-resolution Gravity Field Models of the Moon Using GRAIL mission Data T2 - 2015 European Geosciences Union General Assembly AN - 1684407002; 6347351 JF - 2015 European Geosciences Union General Assembly AU - Lemoine, Frank Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Gravity field KW - Data processing KW - Moon KW - Models UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684407002?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=High-resolution+Gravity+Field+Models+of+the+Moon+Using+GRAIL+mission+Data&rft.au=Lemoine%2C+Frank&rft.aulast=Lemoine&rft.aufirst=Frank&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Modelling the volatile and organic content of Enceladus' ocean T2 - 2015 European Geosciences Union General Assembly AN - 1684406892; 6347546 JF - 2015 European Geosciences Union General Assembly AU - Sotin, Christophe AU - Lunine, Jonathan Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Volatiles KW - Oceans UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684406892?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Modelling+the+volatile+and+organic+content+of+Enceladus%27+ocean&rft.au=Sotin%2C+Christophe%3BLunine%2C+Jonathan&rft.aulast=Sotin&rft.aufirst=Christophe&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Aqueous Alteration at a Delta in Eastern Libya Montes T2 - 2015 European Geosciences Union General Assembly AN - 1684405833; 6347475 JF - 2015 European Geosciences Union General Assembly AU - Bishop, Janice AU - Tirsch, Daniela AU - Tornabene, Livio AU - Seelos, Frank AU - Erkeling, Gino AU - Hiesinger, Harald AU - Jaumann, Ralf Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Libya KW - Deltas UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684405833?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Aqueous+Alteration+at+a+Delta+in+Eastern+Libya+Montes&rft.au=Bishop%2C+Janice%3BTirsch%2C+Daniela%3BTornabene%2C+Livio%3BSeelos%2C+Frank%3BErkeling%2C+Gino%3BHiesinger%2C+Harald%3BJaumann%2C+Ralf&rft.aulast=Bishop&rft.aufirst=Janice&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Uncertainty evaluation of a regional real-time system for rain-induced landslides T2 - 2015 European Geosciences Union General Assembly AN - 1684405796; 6346603 JF - 2015 European Geosciences Union General Assembly AU - Kirschbaum, Dalia AU - Stanley, Thomas AU - Yatheendradas, Soni Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Landslides UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684405796?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Uncertainty+evaluation+of+a+regional+real-time+system+for+rain-induced+landslides&rft.au=Kirschbaum%2C+Dalia%3BStanley%2C+Thomas%3BYatheendradas%2C+Soni&rft.aulast=Kirschbaum&rft.aufirst=Dalia&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Relative contributions of sea surface salinity and temperature to density gradient and tropical instability waves: implications to eddy-mean flow interaction T2 - 2015 European Geosciences Union General Assembly AN - 1684405740; 6347293 JF - 2015 European Geosciences Union General Assembly AU - Hasson, Audrey AU - Lee, Tong Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Temperature effects KW - Density gradients KW - Salinity effects KW - Waves KW - Wave interactions KW - Surface salinity UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684405740?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Relative+contributions+of+sea+surface+salinity+and+temperature+to+density+gradient+and+tropical+instability+waves%3A+implications+to+eddy-mean+flow+interaction&rft.au=Hasson%2C+Audrey%3BLee%2C+Tong&rft.aulast=Hasson&rft.aufirst=Audrey&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Analysis Update of LOFAR Data from HD 80606b Near Planetary Periastron T2 - 2015 European Geosciences Union General Assembly AN - 1684405702; 6347453 JF - 2015 European Geosciences Union General Assembly AU - Winterhalter, Daniel AU - Knapp, Mary AU - Majid, Walid AU - Lazio, Joseph AU - Farrell, William AU - Splitter, Laura Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Data processing UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684405702?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Analysis+Update+of+LOFAR+Data+from+HD+80606b+Near+Planetary+Periastron&rft.au=Winterhalter%2C+Daniel%3BKnapp%2C+Mary%3BMajid%2C+Walid%3BLazio%2C+Joseph%3BFarrell%2C+William%3BSplitter%2C+Laura&rft.aulast=Winterhalter&rft.aufirst=Daniel&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Rainy Day: A Remote Sensing-Driven Extreme Rainfall Simulation Approach for Hazard Assessment T2 - 2015 European Geosciences Union General Assembly AN - 1684405502; 6347097 JF - 2015 European Geosciences Union General Assembly AU - Wright, Daniel AU - Yatheendradas, Soni AU - Peters-Lidard, Christa AU - Kirschbaum, Dalia AU - Ayalew, Tibebu AU - Mantilla, Ricardo AU - Krajewski, Witold Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Rainfall KW - Simulation KW - Hazard assessment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684405502?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Rainy+Day%3A+A+Remote+Sensing-Driven+Extreme+Rainfall+Simulation+Approach+for+Hazard+Assessment&rft.au=Wright%2C+Daniel%3BYatheendradas%2C+Soni%3BPeters-Lidard%2C+Christa%3BKirschbaum%2C+Dalia%3BAyalew%2C+Tibebu%3BMantilla%2C+Ricardo%3BKrajewski%2C+Witold&rft.aulast=Wright&rft.aufirst=Daniel&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - NASA SSERVI Contributions to Lunar Science and Exploration T2 - 2015 European Geosciences Union General Assembly AN - 1684405434; 6347368 JF - 2015 European Geosciences Union General Assembly AU - Bailey, Brad AU - Pendleton, Yvonne AU - Schmidt, Gregory Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Exploration UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684405434?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=NASA+SSERVI+Contributions+to+Lunar+Science+and+Exploration&rft.au=Bailey%2C+Brad%3BPendleton%2C+Yvonne%3BSchmidt%2C+Gregory&rft.aulast=Bailey&rft.aufirst=Brad&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Optimizing available water capacity using microwave satellite data for improving irrigation management T2 - 2015 European Geosciences Union General Assembly AN - 1684404504; 6346769 JF - 2015 European Geosciences Union General Assembly AU - Gupta, Manika AU - Bolten, John AU - Lakshmi, Venkat Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Microwave radiation KW - Data processing KW - Water management KW - Irrigation KW - Remote sensing KW - Satellites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684404504?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Optimizing+available+water+capacity+using+microwave+satellite+data+for+improving+irrigation+management&rft.au=Gupta%2C+Manika%3BBolten%2C+John%3BLakshmi%2C+Venkat&rft.aulast=Gupta&rft.aufirst=Manika&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Ensemble Modeling of CME Propagation and Geoeffectiveness T2 - 2015 European Geosciences Union General Assembly AN - 1684404133; 6348712 JF - 2015 European Geosciences Union General Assembly AU - Mays, M AU - Taktakishvili, Aleksandre AU - Pulkkinen, Antti AU - MacNeice, Peter AU - Rastatter, Lutz AU - Odstrcil, Dusan AU - Jian, Lan AU - Richardson, Ian Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Atmospheric sciences KW - Earth science KW - Civil engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684404133?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Ensemble+Modeling+of+CME+Propagation+and+Geoeffectiveness&rft.au=Mays%2C+M%3BTaktakishvili%2C+Aleksandre%3BPulkkinen%2C+Antti%3BMacNeice%2C+Peter%3BRastatter%2C+Lutz%3BOdstrcil%2C+Dusan%3BJian%2C+Lan%3BRichardson%2C+Ian&rft.aulast=Mays&rft.aufirst=M&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Moisture flux increases seen in the Arctic between 2003-2013 T2 - 2015 European Geosciences Union General Assembly AN - 1684404111; 6347406 JF - 2015 European Geosciences Union General Assembly AU - Boisvert, Linette AU - Wu, Dong AU - Vihma, Timo AU - Shie, Chung-Lin AU - Susskind, Joel Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Polar environments KW - Arctic UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684404111?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Moisture+flux+increases+seen+in+the+Arctic+between+2003-2013&rft.au=Boisvert%2C+Linette%3BWu%2C+Dong%3BVihma%2C+Timo%3BShie%2C+Chung-Lin%3BSusskind%2C+Joel&rft.aulast=Boisvert&rft.aufirst=Linette&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - GPM Ground Validation: Pre to Post-Launch Era T2 - 2015 European Geosciences Union General Assembly AN - 1684403838; 6344000 JF - 2015 European Geosciences Union General Assembly AU - Petersen, Walt AU - Skofronick-Jackson, Gail AU - Huffman, George Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Atmospheric sciences KW - Earth science KW - Civil engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684403838?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=GPM+Ground+Validation%3A+Pre+to+Post-Launch+Era&rft.au=Petersen%2C+Walt%3BSkofronick-Jackson%2C+Gail%3BHuffman%2C+George&rft.aulast=Petersen&rft.aufirst=Walt&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Geomorphic Units on Titan T2 - 2015 European Geosciences Union General Assembly AN - 1684403621; 6347542 JF - 2015 European Geosciences Union General Assembly AU - Lopes, Rosaly AU - Malaska, Michael AU - Schoenfeld, Ashley AU - Birch, Samuel AU - Hayes, Alexander AU - Solomonidou, Anezina AU - Radebaugh, Jani Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684403621?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Geomorphic+Units+on+Titan&rft.au=Lopes%2C+Rosaly%3BMalaska%2C+Michael%3BSchoenfeld%2C+Ashley%3BBirch%2C+Samuel%3BHayes%2C+Alexander%3BSolomonidou%2C+Anezina%3BRadebaugh%2C+Jani&rft.aulast=Lopes&rft.aufirst=Rosaly&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Early Results from the NASA Orbiting Carbon Observatory-2 (OCO-2) T2 - 2015 European Geosciences Union General Assembly AN - 1684403615; 6343664 JF - 2015 European Geosciences Union General Assembly AU - Crisp, David AU - Eldering, Annmarie Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Carbon UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684403615?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Early+Results+from+the+NASA+Orbiting+Carbon+Observatory-2+%28OCO-2%29&rft.au=Crisp%2C+David%3BEldering%2C+Annmarie&rft.aulast=Crisp&rft.aufirst=David&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - A compact ground-based laser heterodyne radiometer for global column measurements of CO2 and CH4 T2 - 2015 European Geosciences Union General Assembly AN - 1684403080; 6348093 JF - 2015 European Geosciences Union General Assembly AU - Steel, Emily Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Radiometers KW - Methane KW - Lasers KW - Carbon dioxide UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684403080?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=A+compact+ground-based+laser+heterodyne+radiometer+for+global+column+measurements+of+CO2+and+CH4&rft.au=Steel%2C+Emily&rft.aulast=Steel&rft.aufirst=Emily&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Simultaneous measurements of ice sheet elevation change, accumulation, and firn compaction using Operation IceBridge data T2 - 2015 European Geosciences Union General Assembly AN - 1684402844; 6344942 JF - 2015 European Geosciences Union General Assembly AU - Medley, Brooke AU - Ligtenberg, Stefan AU - van den Broeke, Michiel AU - Gogineni, Sivaprasad AU - Nowicki, Sophie Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Ice KW - Data processing KW - Glaciation KW - Compaction UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684402844?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Simultaneous+measurements+of+ice+sheet+elevation+change%2C+accumulation%2C+and+firn+compaction+using+Operation+IceBridge+data&rft.au=Medley%2C+Brooke%3BLigtenberg%2C+Stefan%3Bvan+den+Broeke%2C+Michiel%3BGogineni%2C+Sivaprasad%3BNowicki%2C+Sophie&rft.aulast=Medley&rft.aufirst=Brooke&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Multipoint measurements: a key tool for magnetic reconnection research T2 - 2015 European Geosciences Union General Assembly AN - 1684402831; 6347762 JF - 2015 European Geosciences Union General Assembly AU - Hesse, Michael AU - Liu, Yi-Hsin AU - Chen, Li-Jen AU - Kuznetsova, Masha AU - Aunai, Nicolas AU - Bessho, Naoki Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Atmospheric sciences KW - Earth science KW - Civil engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684402831?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Multipoint+measurements%3A+a+key+tool+for+magnetic+reconnection+research&rft.au=Hesse%2C+Michael%3BLiu%2C+Yi-Hsin%3BChen%2C+Li-Jen%3BKuznetsova%2C+Masha%3BAunai%2C+Nicolas%3BBessho%2C+Naoki&rft.aulast=Hesse&rft.aufirst=Michael&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Global Observations of SO2 and HCHO Using an Innovative Algorithm based on Principal Component Analysis of Satellite Radiance Data T2 - 2015 European Geosciences Union General Assembly AN - 1684402775; 6344691 JF - 2015 European Geosciences Union General Assembly AU - Li, Can AU - Joiner, Joanna AU - Krotkov, Nickolay AU - Fioletov, Vitali AU - McLinden, Chris Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Radiance KW - Data processing KW - Mathematical models KW - Sulfur dioxide KW - Principal components analysis KW - Algorithms KW - Remote sensing KW - Satellites KW - Innovations UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684402775?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Global+Observations+of+SO2+and+HCHO+Using+an+Innovative+Algorithm+based+on+Principal+Component+Analysis+of+Satellite+Radiance+Data&rft.au=Li%2C+Can%3BJoiner%2C+Joanna%3BKrotkov%2C+Nickolay%3BFioletov%2C+Vitali%3BMcLinden%2C+Chris&rft.aulast=Li&rft.aufirst=Can&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - MESSENGER Observations of Mercury's Magnetosphere Dynamics: A Review T2 - 2015 European Geosciences Union General Assembly AN - 1684402115; 6343717 JF - 2015 European Geosciences Union General Assembly AU - DiBraccio, Gina Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Reviews KW - Mercury UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684402115?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=MESSENGER+Observations+of+Mercury%27s+Magnetosphere+Dynamics%3A+A+Review&rft.au=DiBraccio%2C+Gina&rft.aulast=DiBraccio&rft.aufirst=Gina&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - GPM Mission Gridded Text Products Providing Surface Precipitation Retrievals T2 - 2015 European Geosciences Union General Assembly AN - 1684401960; 6343988 JF - 2015 European Geosciences Union General Assembly AU - Stocker, Erich AU - Kelley, Owen AU - Huffman, George AU - Kummerow, Christian Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Precipitation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684401960?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=GPM+Mission+Gridded+Text+Products+Providing+Surface+Precipitation+Retrievals&rft.au=Stocker%2C+Erich%3BKelley%2C+Owen%3BHuffman%2C+George%3BKummerow%2C+Christian&rft.aulast=Stocker&rft.aufirst=Erich&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Vortex-wide chlorine activation by a localized PSC event in the Arctic winter of 2009/10 T2 - 2015 European Geosciences Union General Assembly AN - 1684401950; 6344551 JF - 2015 European Geosciences Union General Assembly AU - Wegner, Tobias AU - Poole, Lamont AU - Tritscher, Ines AU - Grooss, Jens-Uwe AU - Nakajima, Hideaki AU - Pitts, Michael Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Chlorine KW - Polar environments KW - Arctic KW - Winter UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684401950?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Vortex-wide+chlorine+activation+by+a+localized+PSC+event+in+the+Arctic+winter+of+2009%2F10&rft.au=Wegner%2C+Tobias%3BPoole%2C+Lamont%3BTritscher%2C+Ines%3BGrooss%2C+Jens-Uwe%3BNakajima%2C+Hideaki%3BPitts%2C+Michael&rft.aulast=Wegner&rft.aufirst=Tobias&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - GPM Science Status Fourteen Months after Launch T2 - 2015 European Geosciences Union General Assembly AN - 1684401943; 6343993 JF - 2015 European Geosciences Union General Assembly AU - Skofronick Jackson, Gail AU - Huffman, George Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Atmospheric sciences KW - Earth science KW - Civil engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684401943?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=GPM+Science+Status+Fourteen+Months+after+Launch&rft.au=Skofronick+Jackson%2C+Gail%3BHuffman%2C+George&rft.aulast=Skofronick+Jackson&rft.aufirst=Gail&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Information Models, Data Requirements, and Agile Data Curation T2 - 2015 European Geosciences Union General Assembly AN - 1684401740; 6345606 JF - 2015 European Geosciences Union General Assembly AU - Hughes, John AU - Crichton, Dan AU - Ritschel, Bernd AU - Hardman, Sean AU - Joyner, Ron Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Data processing KW - Models UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684401740?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Information+Models%2C+Data+Requirements%2C+and+Agile+Data+Curation&rft.au=Hughes%2C+John%3BCrichton%2C+Dan%3BRitschel%2C+Bernd%3BHardman%2C+Sean%3BJoyner%2C+Ron&rft.aulast=Hughes&rft.aufirst=John&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Human amplification of drought-driven fire in tropical regions T2 - 2015 European Geosciences Union General Assembly AN - 1684401658; 6344139 JF - 2015 European Geosciences Union General Assembly AU - Tosca, Michael Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Fires KW - Tropical environments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684401658?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Human+amplification+of+drought-driven+fire+in+tropical+regions&rft.au=Tosca%2C+Michael&rft.aulast=Tosca&rft.aufirst=Michael&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Inter-comparison of precipitation retrievals from the Global Precipitation Measurement mission constellation T2 - 2015 European Geosciences Union General Assembly AN - 1684401656; 6343991 JF - 2015 European Geosciences Union General Assembly AU - Kidd, Chris AU - Matsui, Toshihisa AU - Randel, Dave AU - Stocker, Erich AU - Kummerow, Chris Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Precipitation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684401656?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Inter-comparison+of+precipitation+retrievals+from+the+Global+Precipitation+Measurement+mission+constellation&rft.au=Kidd%2C+Chris%3BMatsui%2C+Toshihisa%3BRandel%2C+Dave%3BStocker%2C+Erich%3BKummerow%2C+Chris&rft.aulast=Kidd&rft.aufirst=Chris&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Aerosol-cloud interactions in the South-East Atlantic: knowledge gaps, planned observations to address them, and implications for global climate change modeling T2 - 2015 European Geosciences Union General Assembly AN - 1684401559; 6344180 JF - 2015 European Geosciences Union General Assembly AU - Redemann, Jens AU - Wood, Robert AU - Zuidema, Paquita AU - Haywood, James AU - Luna, Bernadette AU - Abel, Steven Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Atlantic KW - Climatic changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684401559?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Aerosol-cloud+interactions+in+the+South-East+Atlantic%3A+knowledge+gaps%2C+planned+observations+to+address+them%2C+and+implications+for+global+climate+change+modeling&rft.au=Redemann%2C+Jens%3BWood%2C+Robert%3BZuidema%2C+Paquita%3BHaywood%2C+James%3BLuna%2C+Bernadette%3BAbel%2C+Steven&rft.aulast=Redemann&rft.aufirst=Jens&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Analysis of the Interaction and Transport of Aerosols with Cloud or Fog during DRAGON Campaigns in Asia from AERONET and Satellite Remote Sensing T2 - 2015 European Geosciences Union General Assembly AN - 1684401501; 6344463 JF - 2015 European Geosciences Union General Assembly AU - Eck, Thomas Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Clouds KW - Aerosols KW - Remote sensing KW - Asia KW - Satellites KW - Fog UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684401501?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Analysis+of+the+Interaction+and+Transport+of+Aerosols+with+Cloud+or+Fog+during+DRAGON+Campaigns+in+Asia+from+AERONET+and+Satellite+Remote+Sensing&rft.au=Eck%2C+Thomas&rft.aulast=Eck&rft.aufirst=Thomas&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - First look at NASA's 'Deep Blue' aerosol products from the NPP-VIIRS sensor T2 - 2015 European Geosciences Union General Assembly AN - 1684401480; 6344475 JF - 2015 European Geosciences Union General Assembly AU - Sayer, Andrew AU - Hsu, Christina AU - Lee, Jaehwa AU - Bettenhausen, Corey AU - Carletta, Nicholas Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Aerosols KW - Sensors UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684401480?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=First+look+at+NASA%27s+%27Deep+Blue%27+aerosol+products+from+the+NPP-VIIRS+sensor&rft.au=Sayer%2C+Andrew%3BHsu%2C+Christina%3BLee%2C+Jaehwa%3BBettenhausen%2C+Corey%3BCarletta%2C+Nicholas&rft.aulast=Sayer&rft.aufirst=Andrew&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Mercury's gravity field, orientation, and ephemeris after MESSENGER's Low-Altitude Campaign T2 - 2015 European Geosciences Union General Assembly AN - 1684400051; 6347568 JF - 2015 European Geosciences Union General Assembly AU - Genova, Antonio AU - Mazarico, Erwan AU - Goossens, Sander AU - Lemoine, Frank AU - Neumann, Gregory AU - Smith, David AU - Zuber, Maria AU - Solomon, Sean Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Gravity field KW - Gravity KW - Mercury KW - Nautical almanacs UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684400051?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Mercury%27s+gravity+field%2C+orientation%2C+and+ephemeris+after+MESSENGER%27s+Low-Altitude+Campaign&rft.au=Genova%2C+Antonio%3BMazarico%2C+Erwan%3BGoossens%2C+Sander%3BLemoine%2C+Frank%3BNeumann%2C+Gregory%3BSmith%2C+David%3BZuber%2C+Maria%3BSolomon%2C+Sean&rft.aulast=Genova&rft.aufirst=Antonio&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Earth-directed ICME magnetic field configuration T2 - 2015 European Geosciences Union General Assembly AN - 1684399466; 6345182 JF - 2015 European Geosciences Union General Assembly AU - Nieves-Chinchilla, Teresa AU - Vourlidas, Angelos AU - Szabo, Adam AU - Neel, Savani AU - Mays, Leila AU - Hidalgo, Miguel AU - Wenyuan, Yu Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Magnetic fields UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684399466?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Earth-directed+ICME+magnetic+field+configuration&rft.au=Nieves-Chinchilla%2C+Teresa%3BVourlidas%2C+Angelos%3BSzabo%2C+Adam%3BNeel%2C+Savani%3BMays%2C+Leila%3BHidalgo%2C+Miguel%3BWenyuan%2C+Yu&rft.aulast=Nieves-Chinchilla&rft.aufirst=Teresa&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Investigating sensitivity to Saharan dust in tropical cyclone formation using NASA's adjoint model T2 - 2015 European Geosciences Union General Assembly AN - 1684399387; 6344638 JF - 2015 European Geosciences Union General Assembly AU - Holdaway, Daniel Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Cyclones KW - Hurricanes KW - Sensitivity KW - Africa, Sahara Desert KW - Dust KW - Models UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684399387?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Investigating+sensitivity+to+Saharan+dust+in+tropical+cyclone+formation+using+NASA%27s+adjoint+model&rft.au=Holdaway%2C+Daniel&rft.aulast=Holdaway&rft.aufirst=Daniel&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - ISMIP6: Ice Sheet Model Intercomparison Project for CMIP6 T2 - 2015 European Geosciences Union General Assembly AN - 1684399223; 6344839 JF - 2015 European Geosciences Union General Assembly AU - Nowicki, Sophie AU - Payne, Tony AU - Larour, Eric AU - Ouchi, Ayako AU - Goelzer, Heiko AU - Gregory, Jonathan AU - Lipscomb, William AU - Seroussi, Helene AU - Shepherd, Andrew Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Ice KW - Glaciation KW - Models UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684399223?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=ISMIP6%3A+Ice+Sheet+Model+Intercomparison+Project+for+CMIP6&rft.au=Nowicki%2C+Sophie%3BPayne%2C+Tony%3BLarour%2C+Eric%3BOuchi%2C+Ayako%3BGoelzer%2C+Heiko%3BGregory%2C+Jonathan%3BLipscomb%2C+William%3BSeroussi%2C+Helene%3BShepherd%2C+Andrew&rft.aulast=Nowicki&rft.aufirst=Sophie&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - An Overview of Scientific Results from the Flux-gate Magnetometer on the C/NOFS Satellite T2 - 2015 European Geosciences Union General Assembly AN - 1684398861; 6347774 JF - 2015 European Geosciences Union General Assembly AU - Pfaff, Robert AU - Le, Guan AU - Freudenreich, Henry AU - Acuna, Mario Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Reviews KW - Remote sensing KW - Magnetometers KW - Satellites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684398861?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=An+Overview+of+Scientific+Results+from+the+Flux-gate+Magnetometer+on+the+C%2FNOFS+Satellite&rft.au=Pfaff%2C+Robert%3BLe%2C+Guan%3BFreudenreich%2C+Henry%3BAcuna%2C+Mario&rft.aulast=Pfaff&rft.aufirst=Robert&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Ionosphere-Thermosphere Coupling and Energy Partitioning During Two HSS Events T2 - 2015 European Geosciences Union General Assembly AN - 1684398804; 6347779 JF - 2015 European Geosciences Union General Assembly AU - Verkhoglyadova, Olga AU - Mannucci, Anthony AU - Meng, Xing AU - Tsurutani, Bruce AU - Mlynczak, Martin AU - Hunt, Linda AU - Redmon, Robert AU - Green, Janet Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Energy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684398804?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Ionosphere-Thermosphere+Coupling+and+Energy+Partitioning+During+Two+HSS+Events&rft.au=Verkhoglyadova%2C+Olga%3BMannucci%2C+Anthony%3BMeng%2C+Xing%3BTsurutani%2C+Bruce%3BMlynczak%2C+Martin%3BHunt%2C+Linda%3BRedmon%2C+Robert%3BGreen%2C+Janet&rft.aulast=Verkhoglyadova&rft.aufirst=Olga&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - 2-micron Double Pulsed IPDA Lidar for Atmospheric CO2 Measurement T2 - 2015 European Geosciences Union General Assembly AN - 1684398537; 6343661 JF - 2015 European Geosciences Union General Assembly AU - Yu, Jirong AU - Petros, Mulugeta AU - Refaat, Tamer AU - Reithmaier, Karl AU - Remus, Ruben AU - Singh, Upendra AU - Johnson, Will AU - Boyer, Charlie AU - Fay, James AU - Johnston, Susan AU - Murchison, Luke AU - Scola, Tory Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Lidar KW - Carbon dioxide UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684398537?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=2-micron+Double+Pulsed+IPDA+Lidar+for+Atmospheric+CO2+Measurement&rft.au=Yu%2C+Jirong%3BPetros%2C+Mulugeta%3BRefaat%2C+Tamer%3BReithmaier%2C+Karl%3BRemus%2C+Ruben%3BSingh%2C+Upendra%3BJohnson%2C+Will%3BBoyer%2C+Charlie%3BFay%2C+James%3BJohnston%2C+Susan%3BMurchison%2C+Luke%3BScola%2C+Tory&rft.aulast=Yu&rft.aufirst=Jirong&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Simulating Ice Particle Melting using Smooth Particle Hydrodynamics T2 - 2015 European Geosciences Union General Assembly AN - 1684398497; 6343980 JF - 2015 European Geosciences Union General Assembly AU - Kuo, Kwo-Sen AU - Pelissier, Craig Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Melting KW - Ice KW - Hydrodynamics KW - Particulates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684398497?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Simulating+Ice+Particle+Melting+using+Smooth+Particle+Hydrodynamics&rft.au=Kuo%2C+Kwo-Sen%3BPelissier%2C+Craig&rft.aulast=Kuo&rft.aufirst=Kwo-Sen&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - OMI decadal record of aerosol absorption optical depth and single scattering albedo T2 - 2015 European Geosciences Union General Assembly AN - 1684398416; 6344479 JF - 2015 European Geosciences Union General Assembly AU - Torres, Omar AU - Jethva, Hiren AU - Ahn, Changwoo Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Optical analysis KW - Aerosols KW - Optical properties KW - Albedo KW - Absorption UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684398416?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=OMI+decadal+record+of+aerosol+absorption+optical+depth+and+single+scattering+albedo&rft.au=Torres%2C+Omar%3BJethva%2C+Hiren%3BAhn%2C+Changwoo&rft.aulast=Torres&rft.aufirst=Omar&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - First Results from the Integrated Multi-Satellite Retrievals for GPM (IMERG) T2 - 2015 European Geosciences Union General Assembly AN - 1684398229; 6343999 JF - 2015 European Geosciences Union General Assembly AU - Huffman, George AU - Bolvin, David AU - Braithwaite, Dan AU - Hsu, Kuolin AU - Joyce, Robert AU - Kidd, Christopher AU - Nelkin, Eric AU - Sorooshian, Soroosh AU - Wang, Jianxin AU - Xie, Pingping Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Atmospheric sciences KW - Earth science KW - Civil engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684398229?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=First+Results+from+the+Integrated+Multi-Satellite+Retrievals+for+GPM+%28IMERG%29&rft.au=Huffman%2C+George%3BBolvin%2C+David%3BBraithwaite%2C+Dan%3BHsu%2C+Kuolin%3BJoyce%2C+Robert%3BKidd%2C+Christopher%3BNelkin%2C+Eric%3BSorooshian%2C+Soroosh%3BWang%2C+Jianxin%3BXie%2C+Pingping&rft.aulast=Huffman&rft.aufirst=George&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Advances in High Energy Solid-State Pulsed 2-micron Lidar Development for Ground and Airborne Wind, Water Vapor and CO2 Measurements T2 - 2015 European Geosciences Union General Assembly AN - 1684398217; 6344188 JF - 2015 European Geosciences Union General Assembly AU - Singh, Upendra AU - Yu, Jirong AU - Petros, Mulugeta AU - Refaat, Tamer AU - Kavaya, Michael AU - Remus, Ruben Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Water vapor KW - Energy KW - Lidar KW - Carbon dioxide KW - Wind UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684398217?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Advances+in+High+Energy+Solid-State+Pulsed+2-micron+Lidar+Development+for+Ground+and+Airborne+Wind%2C+Water+Vapor+and+CO2+Measurements&rft.au=Singh%2C+Upendra%3BYu%2C+Jirong%3BPetros%2C+Mulugeta%3BRefaat%2C+Tamer%3BKavaya%2C+Michael%3BRemus%2C+Ruben&rft.aulast=Singh&rft.aufirst=Upendra&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - A new model of HF-EOP variation derived from 35 years of VLBI T2 - 2015 European Geosciences Union General Assembly AN - 1684398187; 6345629 JF - 2015 European Geosciences Union General Assembly AU - Gipson, John AU - Hesslow, Linnea Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Models UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684398187?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=A+new+model+of+HF-EOP+variation+derived+from+35+years+of+VLBI&rft.au=Gipson%2C+John%3BHesslow%2C+Linnea&rft.aulast=Gipson&rft.aufirst=John&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - CO2 Plume Detection, Verification, and Flux Determination Using OCO-2 Data: Volcanoes and Power Plants T2 - 2015 European Geosciences Union General Assembly AN - 1684398067; 6343665 JF - 2015 European Geosciences Union General Assembly AU - Schwandner, Florian AU - Realmuto, Vincent AU - Carn, Simon AU - Kahn, Brian AU - Oda, Tomohiro AU - Kuze, Akihiko AU - Kataoka, Fumie AU - Krings, Thomas AU - Rayner, Peter AU - Shiomi, Kei Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Data processing KW - Power plants KW - Volcanoes KW - Carbon dioxide KW - Plumes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684398067?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=CO2+Plume+Detection%2C+Verification%2C+and+Flux+Determination+Using+OCO-2+Data%3A+Volcanoes+and+Power+Plants&rft.au=Schwandner%2C+Florian%3BRealmuto%2C+Vincent%3BCarn%2C+Simon%3BKahn%2C+Brian%3BOda%2C+Tomohiro%3BKuze%2C+Akihiko%3BKataoka%2C+Fumie%3BKrings%2C+Thomas%3BRayner%2C+Peter%3BShiomi%2C+Kei&rft.aulast=Schwandner&rft.aufirst=Florian&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Assimilating multi-sensor satellite observations for initializing hydrologic and agricultural forecasts T2 - 2015 European Geosciences Union General Assembly AN - 1684398020; 6346252 JF - 2015 European Geosciences Union General Assembly AU - Andreadis, Konstantinos AU - Das, Narendra AU - Granger, Stephanie AU - Han, Eunjin AU - Ines, Amor AU - Stampoulis, Dimitrios Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Remote sensing KW - Satellites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684398020?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Assimilating+multi-sensor+satellite+observations+for+initializing+hydrologic+and+agricultural+forecasts&rft.au=Andreadis%2C+Konstantinos%3BDas%2C+Narendra%3BGranger%2C+Stephanie%3BHan%2C+Eunjin%3BInes%2C+Amor%3BStampoulis%2C+Dimitrios&rft.aulast=Andreadis&rft.aufirst=Konstantinos&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Status of the GRACE Follow-On Mission T2 - 2015 European Geosciences Union General Assembly AN - 1684395900; 6345577 JF - 2015 European Geosciences Union General Assembly AU - Watkins, Michael AU - Flechtner, Frank AU - Morton, Phil AU - Massmann, Franz-Heinrich AU - Gaston, Rob AU - Grunwaldt, Ludwig Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Atmospheric sciences KW - Earth science KW - Civil engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684395900?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Status+of+the+GRACE+Follow-On+Mission&rft.au=Watkins%2C+Michael%3BFlechtner%2C+Frank%3BMorton%2C+Phil%3BMassmann%2C+Franz-Heinrich%3BGaston%2C+Rob%3BGrunwaldt%2C+Ludwig&rft.aulast=Watkins&rft.aufirst=Michael&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - The ENSO Effects on Tropical Clouds and Top-of-Atmosphere Cloud Radiative Effects in CMIP5 Models T2 - 2015 European Geosciences Union General Assembly AN - 1684395477; 6344971 JF - 2015 European Geosciences Union General Assembly AU - Su, Wenying AU - Wang, Hailan Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Clouds KW - Models KW - El Nino phenomena KW - Southern Oscillation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684395477?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=The+ENSO+Effects+on+Tropical+Clouds+and+Top-of-Atmosphere+Cloud+Radiative+Effects+in+CMIP5+Models&rft.au=Su%2C+Wenying%3BWang%2C+Hailan&rft.aulast=Su&rft.aufirst=Wenying&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Plasmaspheric Hiss Properties: Observations from Polar T2 - 2015 European Geosciences Union General Assembly AN - 1684395209; 6348000 JF - 2015 European Geosciences Union General Assembly AU - Tsurutani, Bruce AU - Falkowski, Barbara AU - Pickett, Jolene AU - Santolik, Ondrej AU - Lakhina, Gurbax Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Atmospheric sciences KW - Earth science KW - Civil engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684395209?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Plasmaspheric+Hiss+Properties%3A+Observations+from+Polar&rft.au=Tsurutani%2C+Bruce%3BFalkowski%2C+Barbara%3BPickett%2C+Jolene%3BSantolik%2C+Ondrej%3BLakhina%2C+Gurbax&rft.aulast=Tsurutani&rft.aufirst=Bruce&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - A Low-Cost Approach to the Investigation of Venus Lightning T2 - 2015 European Geosciences Union General Assembly AN - 1684394953; 6347950 JF - 2015 European Geosciences Union General Assembly AU - Majid, Walid Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Lightning KW - Electricity UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684394953?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=A+Low-Cost+Approach+to+the+Investigation+of+Venus+Lightning&rft.au=Majid%2C+Walid&rft.aulast=Majid&rft.aufirst=Walid&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Impact of Resolution Aware Moist Physics on Constituent Transport T2 - 2015 European Geosciences Union General Assembly AN - 1684394517; 6344622 JF - 2015 European Geosciences Union General Assembly AU - Molod, Andrea AU - Colarco, Peter Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Atmospheric sciences KW - Earth science KW - Civil engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684394517?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Impact+of+Resolution+Aware+Moist+Physics+on+Constituent+Transport&rft.au=Molod%2C+Andrea%3BColarco%2C+Peter&rft.aulast=Molod&rft.aufirst=Andrea&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Overview of the Airborne Tropical TRopopause EXperiment (ATTREX) T2 - 2015 European Geosciences Union General Assembly AN - 1684394400; 6344072 JF - 2015 European Geosciences Union General Assembly AU - Pfister, Leonhard AU - Jensen, Eric Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Tropopause KW - Reviews UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684394400?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Overview+of+the+Airborne+Tropical+TRopopause+EXperiment+%28ATTREX%29&rft.au=Pfister%2C+Leonhard%3BJensen%2C+Eric&rft.aulast=Pfister&rft.aufirst=Leonhard&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Cloud shortwave radiative effect and cloud properties estimated from airborne measurements of transmitted and reflected light T2 - 2015 European Geosciences Union General Assembly AN - 1684394391; 6344193 JF - 2015 European Geosciences Union General Assembly AU - LeBlanc, Samuel Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Clouds KW - Abiotic factors KW - Light effects UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684394391?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Cloud+shortwave+radiative+effect+and+cloud+properties+estimated+from+airborne+measurements+of+transmitted+and+reflected+light&rft.au=LeBlanc%2C+Samuel&rft.aulast=LeBlanc&rft.aufirst=Samuel&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - CPAPER T1 - Advanced IMCW Lidar Techniques for ASCENDS CO2 Column Measurements T2 - 2015 European Geosciences Union General Assembly AN - 1684394297; 6344185 JF - 2015 European Geosciences Union General Assembly AU - Campbell, Joel AU - Lin, Bing AU - Nehrir, Amin AU - Harrison, Fenton AU - Obland, Michael Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Lidar KW - Carbon dioxide UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684394297?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Advanced+IMCW+Lidar+Techniques+for+ASCENDS+CO2+Column+Measurements&rft.au=Campbell%2C+Joel%3BLin%2C+Bing%3BNehrir%2C+Amin%3BHarrison%2C+Fenton%3BObland%2C+Michael&rft.aulast=Campbell&rft.aufirst=Joel&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - JOUR T1 - Strong water isotopic anomalies in the Martian atmosphere; probing current and ancient reservoirs AN - 1703691756; 2015-076467 AB - We measured maps of atmospheric water (H (sub 2) O) and its deuterated form (HDO) across the martian globe, showing strong isotopic anomalies and a significant high deuterium/hydrogen (D/H) enrichment indicative of great water loss. The maps sample the evolution of sublimation from the north polar cap, revealing that the released water has a representative D/H value enriched by a factor of about 7 relative to Earth's ocean [Vienna standard mean ocean water (VSMOW)]. Certain basins and orographic depressions show even higher enrichment, whereas high-altitude regions show much lower values (1 to 3 VSMOW). Our atmospheric maps indicate that water ice in the polar reservoirs is enriched in deuterium to at least 8 VSMOW, which would mean that early Mars (4.5 billion years ago) had a global equivalent water layer at least 137 meters deep. JF - Science AU - Villanueva, G L AU - Mumma, M J AU - Novak, R E AU - Kaeufl, H U AU - Hartogh, P AU - Encrenaz, T AU - Tokunaga, A AU - Khayat, A AU - Smith, M D Y1 - 2015/04/10/ PY - 2015 DA - 2015 Apr 10 SP - 218 EP - 221 PB - American Association for the Advancement of Science, Washington, DC VL - 348 IS - 6231 SN - 0036-8075, 0036-8075 KW - water KW - high-resolution methods KW - polar regions KW - isotopes KW - isotope ratios KW - atmosphere KW - Mars KW - mapping KW - anomalies KW - stable isotopes KW - terrestrial planets KW - planets KW - spatial variations KW - topography KW - D/H KW - hydrogen KW - terrestrial comparison KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703691756?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science&rft.atitle=Strong+water+isotopic+anomalies+in+the+Martian+atmosphere%3B+probing+current+and+ancient+reservoirs&rft.au=Villanueva%2C+G+L%3BMumma%2C+M+J%3BNovak%2C+R+E%3BKaeufl%2C+H+U%3BHartogh%2C+P%3BEncrenaz%2C+T%3BTokunaga%2C+A%3BKhayat%2C+A%3BSmith%2C+M+D&rft.aulast=Villanueva&rft.aufirst=G&rft.date=2015-04-10&rft.volume=348&rft.issue=6231&rft.spage=218&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.aaa3630 L2 - http://www.sciencemag.org/magazine LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 42 N1 - PubXState - DC N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2015-08-13 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - anomalies; atmosphere; D/H; high-resolution methods; hydrogen; isotope ratios; isotopes; mapping; Mars; planets; polar regions; spatial variations; stable isotopes; terrestrial comparison; terrestrial planets; topography; water DO - http://dx.doi.org/10.1126/science.aaa3630 ER - TY - JOUR T1 - Evidence for indigenous nitrogen in sedimentary and aeolian deposits from the Curiosity rover investigations at Gale crater, Mars AN - 1832606608; 778816-2 JF - Proceedings of the National Academy of Sciences of the United States of America AU - Stern, Jennifer C AU - Sutter, Brad AU - Freissinet, Caroline AU - Navarro-Gonzalez, Rafael AU - McKay, Christopher P AU - Archer, P Douglas, Jr AU - Buch, Arnaud AU - Brunner, Anna E AU - Coll, Patrice AU - Eigenbrode, Jennifer L AU - Fairen, Alberto G AU - Franz, Heather B AU - Glavin, Daniel P AU - Kashyap, Srishti AU - McAdam, Amy C AU - Ming, Douglas W AU - Steele, Andrew AU - Szopa, Cyril AU - Wray, James J AU - Martin-Torres, F Javier AU - Zorzano, Maria-Paz AU - Conrad, Pamela G AU - Mahaffy, Paul R Y1 - 2015/04/07/ PY - 2015 DA - 2015 Apr 07 SP - 4245 EP - 4250 PB - National Academy of Sciences, Washington, DC VL - 112 IS - 14 SN - 0027-8424, 0027-8424 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832606608?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+of+the+National+Academy+of+Sciences+of+the+United+States+of+America&rft.atitle=Evidence+for+indigenous+nitrogen+in+sedimentary+and+aeolian+deposits+from+the+Curiosity+rover+investigations+at+Gale+crater%2C+Mars&rft.au=Stern%2C+Jennifer+C%3BSutter%2C+Brad%3BFreissinet%2C+Caroline%3BNavarro-Gonzalez%2C+Rafael%3BMcKay%2C+Christopher+P%3BArcher%2C+P+Douglas%2C+Jr%3BBuch%2C+Arnaud%3BBrunner%2C+Anna+E%3BColl%2C+Patrice%3BEigenbrode%2C+Jennifer+L%3BFairen%2C+Alberto+G%3BFranz%2C+Heather+B%3BGlavin%2C+Daniel+P%3BKashyap%2C+Srishti%3BMcAdam%2C+Amy+C%3BMing%2C+Douglas+W%3BSteele%2C+Andrew%3BSzopa%2C+Cyril%3BWray%2C+James+J%3BMartin-Torres%2C+F+Javier%3BZorzano%2C+Maria-Paz%3BConrad%2C+Pamela+G%3BMahaffy%2C+Paul+R&rft.aulast=Stern&rft.aufirst=Jennifer&rft.date=2015-04-07&rft.volume=112&rft.issue=14&rft.spage=4245&rft.isbn=&rft.btitle=&rft.title=Proceedings+of+the+National+Academy+of+Sciences+of+the+United+States+of+America&rft.issn=00278424&rft_id=info:doi/10.1073%2Fpnas.1420932112 L2 - http://www.pnas.org/content/by/year LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 43 N1 - PubXState - DC N1 - Last updated - 2017-01-24 DO - http://dx.doi.org/10.1073/pnas.1420932112 ER - TY - JOUR T1 - Tracking the weathering of basalts on Mars using lithium isotope fractionation models AN - 1812220401; 2016-072013 AB - Lithium (Li), the lightest of the alkali elements, has geochemical properties that include high aqueous solubility (Li is the most fluid mobile element) and high relative abundance in basalt-forming minerals (values ranking between 0.2 and 12 ppm). Li isotopes are particularly subject to fractionation because the two stable isotopes of lithium- (super 7) Li and (super 6) Li-have a large relative mass difference ( approximately 15%) that results in significant fractionation between water and solid phases. The extent of Li isotope fractionation during aqueous alteration of basalt depends on the dissolution rate of primary minerals-the source of Li-and on the precipitation kinetics, leading to formation of secondary phases. Consequently, a detailed analysis of Li isotopic ratios in both solution and secondary mineral lattices could provide clues about past Martian weathering conditions, including weathering extent, temperature, pH, supersaturation, and evaporation rate of the initial solutions in contact with basalt rocks. In this paper, we discuss ways in which Martian aqueous processes could have lead to Li isotope fractionation. We show that Li isotopic data obtained by future exploration of Mars could be relevant to highlighting different processes of Li isotopic fractionation in the past, and therefore to understanding basalt weathering and environmental conditions early in the planet's history. Abstract Copyright (2015), American Geophysical Union. All Rights Reserved. JF - Geochemistry, Geophysics, Geosystems - G3 AU - Fairen, Alberto G AU - Losa-Adams, Elisabeth AU - Gil-Lozano, Carolina AU - Gago-Duport, Luis AU - Uceda, Esther R AU - Squyres, Steven W AU - Rodriguez, J Alexis P AU - Davila, Alfonso F AU - McKay, Christopher P Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 1172 EP - 1197 PB - American Geophysical Union and The Geochemical Society VL - 16 IS - 4 KW - silicates KW - isotope fractionation KW - alteration KW - volcanic rocks KW - isotopes KW - igneous rocks KW - Mars KW - stable isotopes KW - water-rock interaction KW - basalts KW - Li-7/Li-6 KW - lithium KW - isotope ratios KW - alkali metals KW - kaolinite KW - weathering KW - clay minerals KW - terrestrial planets KW - planets KW - evaporation KW - supersaturation KW - metals KW - sheet silicates KW - aquatic environment KW - 04:Extraterrestrial geology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1812220401?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geochemistry%2C+Geophysics%2C+Geosystems+-+G3&rft.atitle=Tracking+the+weathering+of+basalts+on+Mars+using+lithium+isotope+fractionation+models&rft.au=Fairen%2C+Alberto+G%3BLosa-Adams%2C+Elisabeth%3BGil-Lozano%2C+Carolina%3BGago-Duport%2C+Luis%3BUceda%2C+Esther+R%3BSquyres%2C+Steven+W%3BRodriguez%2C+J+Alexis+P%3BDavila%2C+Alfonso+F%3BMcKay%2C+Christopher+P&rft.aulast=Fairen&rft.aufirst=Alberto&rft.date=2015-04-01&rft.volume=16&rft.issue=4&rft.spage=1172&rft.isbn=&rft.btitle=&rft.title=Geochemistry%2C+Geophysics%2C+Geosystems+-+G3&rft.issn=1525-2027&rft_id=info:doi/10.1002%2F2015GC005748 L2 - http://g-cubed.org LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom | Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - Number of references - 99 N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2016-08-18 N1 - SubjectsTermNotLitGenreText - alkali metals; alteration; aquatic environment; basalts; clay minerals; evaporation; igneous rocks; isotope fractionation; isotope ratios; isotopes; kaolinite; Li-7/Li-6; lithium; Mars; metals; planets; sheet silicates; silicates; stable isotopes; supersaturation; terrestrial planets; volcanic rocks; water-rock interaction; weathering DO - http://dx.doi.org/10.1002/2015GC005748 ER - TY - JOUR T1 - Water in Hawaiian peridotite minerals; a case for a dry metasomatized oceanic mantle lithosphere AN - 1812220281; 2016-072015 AB - The distribution of water concentrations in the oceanic upper mantle has drastic influence on its melting, rheology, and electrical and thermal conductivities and yet is primarily known indirectly from analyses of OIB and MORB. Here, actual mantle samples, eight peridotite xenoliths from Salt Lake Crater (SLC) and one from Pali in Oahu in Hawaii were analyzed by FTIR. Water contents of orthopyroxene, clinopyroxene, and the highest measured in olivine are 116-222, 246-442, and 10-26 ppm weight H (sub 2) O, respectively. Although pyroxene water contents correlate with indices of partial melting, they are too high to be explained by simple melting modeling. Mantle-melt interaction modeling reproduces best the SLC data. These peridotites represent depleted oceanic mantle older than the Pacific lithosphere that has been refertilized by nephelinite melts containing <5 weight % H (sub 2) O. Metasomatism in the Hawaiian peridotites resulted in an apparent decoupling of water and LREE that can be reconciled via assimilation and fractional crystallization. Calculated bulk-rock water contents for SLC (50-96 ppm H (sub 2) O) are on the low side of that of the MORB source (50-200 ppm H (sub 2) O). Preceding metasomatism, the SLC peridotites must have been even drier, with a water content similar to that of the Pali peridotite (45 ppm H (sub 2) O), a relatively unmetasomatized fragment of the Pacific lithosphere. Moreover, our data show that the oceanic mantle lithosphere above plumes is not necessarily enriched in water. Calculated viscosities using olivine water contents allow to estimate the depth of the lithosphere-asthenosphere boundary beneath Hawaii at approximately 90 km. Abstract Copyright (2015), American Geophysical Union. All Rights Reserved. JF - Geochemistry, Geophysics, Geosystems - G3 AU - Peslier, Anne H AU - Bizimis, Michael Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 1211 EP - 1232 PB - American Geophysical Union and The Geochemical Society VL - 16 IS - 4 KW - United States KW - silicates KW - volcanic rocks KW - igneous rocks KW - oceanic lithosphere KW - mantle KW - infrared spectra KW - FTIR spectra KW - pyroxene group KW - plutonic rocks KW - clinopyroxene KW - basalts KW - spectra KW - rare earths KW - mantle plumes KW - chain silicates KW - water KW - upper mantle KW - Honolulu County Hawaii KW - numerical analysis KW - lithosphere KW - Oahu KW - Hawaii KW - East Pacific Ocean Islands KW - ultramafics KW - Salt Lake Crater KW - viscosity KW - metals KW - magmas KW - mid-ocean ridge basalts KW - peridotites KW - Oceania KW - Polynesia KW - orthopyroxene KW - fractional crystallization KW - ocean-island basalts KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1812220281?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geochemistry%2C+Geophysics%2C+Geosystems+-+G3&rft.atitle=Water+in+Hawaiian+peridotite+minerals%3B+a+case+for+a+dry+metasomatized+oceanic+mantle+lithosphere&rft.au=Peslier%2C+Anne+H%3BBizimis%2C+Michael&rft.aulast=Peslier&rft.aufirst=Anne&rft.date=2015-04-01&rft.volume=16&rft.issue=4&rft.spage=1211&rft.isbn=&rft.btitle=&rft.title=Geochemistry%2C+Geophysics%2C+Geosystems+-+G3&rft.issn=1525-2027&rft_id=info:doi/10.1002%2F2015GC005780 L2 - http://g-cubed.org LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom | Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - Number of references - 183 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2016-08-18 N1 - SubjectsTermNotLitGenreText - basalts; chain silicates; clinopyroxene; East Pacific Ocean Islands; fractional crystallization; FTIR spectra; Hawaii; Honolulu County Hawaii; igneous rocks; infrared spectra; lithosphere; magmas; mantle; mantle plumes; metals; mid-ocean ridge basalts; numerical analysis; Oahu; ocean-island basalts; Oceania; oceanic lithosphere; orthopyroxene; peridotites; plutonic rocks; Polynesia; pyroxene group; rare earths; Salt Lake Crater; silicates; spectra; ultramafics; United States; upper mantle; viscosity; volcanic rocks; water DO - http://dx.doi.org/10.1002/2015GC005780 ER - TY - JOUR T1 - Spaced-based observations of seismic-infrasound-induced ionospheric and atmospheric disturbances AN - 1812210642; 2016-068538 JF - Seismological Research Letters AU - Yang, Y M AU - Komjathy, Attila AU - Meng, Xing AU - Verkhoglyadova, Olga AU - Langley, R B AU - Mannucci, Anthony J AU - Anonymous Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 733 PB - Seismological Society of America, El Cerrito, CA VL - 86 IS - 2B SN - 0895-0695, 0895-0695 KW - precursors KW - ionosphere KW - technology KW - early warning systems KW - warning systems KW - seismicity KW - GRACE KW - satellite methods KW - earthquakes KW - instruments KW - remote sensing KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1812210642?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Seismological+Research+Letters&rft.atitle=Spaced-based+observations+of+seismic-infrasound-induced+ionospheric+and+atmospheric+disturbances&rft.au=Yang%2C+Y+M%3BKomjathy%2C+Attila%3BMeng%2C+Xing%3BVerkhoglyadova%2C+Olga%3BLangley%2C+R+B%3BMannucci%2C+Anthony+J%3BAnonymous&rft.aulast=Yang&rft.aufirst=Y&rft.date=2015-04-01&rft.volume=86&rft.issue=2B&rft.spage=733&rft.isbn=&rft.btitle=&rft.title=Seismological+Research+Letters&rft.issn=08950695&rft_id=info:doi/ L2 - http://srl.geoscienceworld.org/ LA - English DB - GeoRef N1 - Conference title - SSA 2015 annual meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - PubXState - CA N1 - Last updated - 2016-10-25 N1 - SubjectsTermNotLitGenreText - early warning systems; earthquakes; GRACE; instruments; ionosphere; precursors; remote sensing; satellite methods; seismicity; technology; warning systems ER - TY - JOUR T1 - Heat content variability in the North Atlantic Ocean in ocean reanalyses AN - 1808377602; PQ0001587670 AB - Warming of the North Atlantic Ocean from the 1950s to 2012 is analyzed on neutral density surfaces and vertical levels in the upper 2000m. Three reanalyses and two observational data sets are compared. The net gain of 510 super(22)J in the upper 2000m is roughly 30% of the global ocean warming over this period. Upper ocean heat content (OHC) is dominated in most regions by heat transport convergence without widespread changes in the potential temperature/salinity relation. The heat convergence is associated with sinking of midthermocline isopycnals, with maximum sinking occurring at potential densities sigma sub(0)=26.4-27.3, which contain subtropical mode waters. Water masses lighter than sigma sub(0)=27.3 accumulate heat by increasing their volume, while heavier waters lose heat by decreasing their volume. Spatially, the OHC trend is nonuniform: the low latitudes, 0-30 degree N are warming steadily while large multidecadal variability occurs at latitudes 30-65 degree N. Key Points * Heat content change dominated by heat transport convergence * Due to widespread sinking trend of midthermocline isopycnals over 50+ years JF - Geophysical Research Letters AU - Haekkinen, Sirpa AU - Rhines, Peter B AU - Worthen, Denise L AD - NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 2901 EP - 2909 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 42 IS - 8 SN - 0094-8276, 0094-8276 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Marine KW - Water masses KW - Enthalpy KW - Variability KW - Settling rate KW - Density KW - Temperature KW - Potential density KW - AN, North Atlantic KW - Heat content KW - Salinity KW - Potential temperature KW - Oceans KW - Latitudinal variations KW - Salinity effects KW - Upper ocean KW - Heat transport KW - SW 0810:General KW - Q2 09182:Methods and instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808377602?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=Heat+content+variability+in+the+North+Atlantic+Ocean+in+ocean+reanalyses&rft.au=Haekkinen%2C+Sirpa%3BRhines%2C+Peter+B%3BWorthen%2C+Denise+L&rft.aulast=Haekkinen&rft.aufirst=Sirpa&rft.date=2015-04-01&rft.volume=42&rft.issue=8&rft.spage=2901&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL063299 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-08-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Water masses; Potential temperature; Settling rate; Salinity effects; Latitudinal variations; Potential density; Heat content; Upper ocean; Heat transport; Salinity; Variability; Enthalpy; Density; Oceans; Temperature; AN, North Atlantic; Marine DO - http://dx.doi.org/10.1002/2015GL063299 ER - TY - JOUR T1 - Virtual California, Etas, and Openhazards Web Services; responding to earthquakes in the age of Big Data AN - 1807508843; 2016-066566 JF - Seismological Research Letters AU - Yoder, Mark R AU - Schultz, K W AU - Heien, E M AU - Rundle, John B AU - Turcotte, D L AU - Glasscoe, M T AU - Donnellan, Andrea AU - Anonymous Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 636 PB - Seismological Society of America, El Cerrito, CA VL - 86 IS - 2B SN - 0895-0695, 0895-0695 KW - United States KW - technology KW - geologic hazards KW - South Napa earthquake 2014 KW - information management KW - World Wide Web KW - data management KW - California KW - virtual reality KW - seismicity KW - seismic risk KW - natural hazards KW - risk assessment KW - earthquakes KW - instruments KW - 19:Seismology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1807508843?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Seismological+Research+Letters&rft.atitle=Virtual+California%2C+Etas%2C+and+Openhazards+Web+Services%3B+responding+to+earthquakes+in+the+age+of+Big+Data&rft.au=Yoder%2C+Mark+R%3BSchultz%2C+K+W%3BHeien%2C+E+M%3BRundle%2C+John+B%3BTurcotte%2C+D+L%3BGlasscoe%2C+M+T%3BDonnellan%2C+Andrea%3BAnonymous&rft.aulast=Yoder&rft.aufirst=Mark&rft.date=2015-04-01&rft.volume=86&rft.issue=2B&rft.spage=636&rft.isbn=&rft.btitle=&rft.title=Seismological+Research+Letters&rft.issn=08950695&rft_id=info:doi/ L2 - http://srl.geoscienceworld.org/ LA - English DB - GeoRef N1 - Conference title - SSA 2015 annual meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - PubXState - CA N1 - Last updated - 2016-10-25 N1 - SubjectsTermNotLitGenreText - California; data management; earthquakes; geologic hazards; information management; instruments; natural hazards; risk assessment; seismic risk; seismicity; South Napa earthquake 2014; technology; United States; virtual reality; World Wide Web ER - TY - JOUR T1 - Modeling a 15-min extravehicular activity prebreathe protocol using NASA's exploration atmosphere (56.5kPa/34% O2) AN - 1705052973; PQ0001683390 AB - NASA's plans for future human exploration missions utilize a new atmosphere of 56.5kPa (8.2psia), 34% O2, 66% N2 to enable rapid extravehicular activity (EVA) capability with minimal gas losses; however, existing EVA prebreathe protocols to mitigate risk of decompression sickness (DCS) are not applicable to the new exploration atmosphere. We provide preliminary analysis of a 15-min prebreathe protocol and examine the potential benefits of intermittent recompression (IR) and an abbreviated N2 purge on crew time and gas consumables usage. A probabilistic model of decompression stress based on an established biophysical model of DCS risk was developed, providing significant (p<0.0001) prediction and goodness-of-fit with 84 cases of DCS in 668 human altitude exposures including a variety of pressure profiles. DCS risk for a 15-min prebreathe protocol was then estimated under different exploration EVA scenarios. Estimated DCS risk for all EVA scenarios modeled using the 15-min prebreathe protocol ranged between 6.1% and 12.1%. Supersaturation in neurological tissues (5- and 10-min half-time compartments) is prevented and tissue tensions in faster half-time compartments ( less than or equal to 40min), where the majority of whole-body N2 is located, are reduced to about the levels (30.0 vs. 27.6kPa) achieved during a standard Shuttle prebreathe protocol. IR reduced estimated DCS risk from 9.7% to 7.9% (1.8% reduction) and from 8.4% to 6.1% (2.3% reduction) for the scenarios modeled; the penalty of N2 reuptake during IR may be outweighed by the benefit of decreased bubble size. Savings of 75% of purge gas and time (0.22kg gas and 6min of crew time per person per EVA) are achievable by abbreviating the EVA suit purge to 20% N2 vs. 5% N2 at the expense of an increase in estimated DCS risk from 9.7% to 12.1% (2.4% increase). A 15-min prebreathe protocol appears feasible using the new exploration atmosphere. IR between EVAs may enable reductions in suit purge and prebreathe requirements, decompression stress, and/or suit operating pressures. Ground trial validation is required before operational implementation. JF - Acta Astronautica AU - Abercromby, Andrew FJ AU - Conkin, Johnny AU - Gernhardt, Michael L AD - Wyle Science, Technology & Engineering Group, 2101 NASA Parkway, Mail Code: Wyle/HAC/37C, Houston, TX 77058, USA Y1 - 2015/04// PY - 2015 DA - Apr 2015 SP - 76 EP - 87 PB - Elsevier B.V., The Boulevard Kidlington Oxford OX5 1GB United Kingdom VL - 109 SN - 0094-5765, 0094-5765 KW - Risk Abstracts; Meteorological & Geoastrophysical Abstracts KW - Prebreathe KW - Decompression sickness KW - EVA KW - Denitrogenation KW - Atmosphere KW - Prediction KW - Supersaturation KW - Pressure profiles KW - Altitude KW - Mitigation KW - Mathematical models KW - Stress KW - Risk reduction KW - M2 52:C. Astrophysics (52) KW - R2 23060:Medical and environmental health UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1705052973?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ariskabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Acta+Astronautica&rft.atitle=Modeling+a+15-min+extravehicular+activity+prebreathe+protocol+using+NASA%27s+exploration+atmosphere+%2856.5kPa%2F34%25+O2%29&rft.au=Abercromby%2C+Andrew+FJ%3BConkin%2C+Johnny%3BGernhardt%2C+Michael+L&rft.aulast=Abercromby&rft.aufirst=Andrew&rft.date=2015-04-01&rft.volume=109&rft.issue=&rft.spage=76&rft.isbn=&rft.btitle=&rft.title=Acta+Astronautica&rft.issn=00945765&rft_id=info:doi/10.1016%2Fj.actaastro.2014.11.039 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Last updated - 2015-11-16 N1 - SubjectsTermNotLitGenreText - Pressure profiles; Supersaturation; Prediction; Mitigation; Altitude; Mathematical models; Stress; Risk reduction; Atmosphere DO - http://dx.doi.org/10.1016/j.actaastro.2014.11.039 ER - TY - JOUR T1 - Estimation of trace element concentrations in the lunar magma ocean using mineral- and metal-silicate melt partition coefficients AN - 1700098656; 2015-073225 AB - This study uses experimentally determined plagioclase-melt D values to estimate the trace element concentrations of Sr, Hf, Ga, W, Mo, Ru, Pd, Au, Ni, and Co in a crystallizing lunar magma ocean at the point of plagioclase flotation. Similarly, experimentally determined metal-silicate partition experiments combined with a composition model for the Moon are used to constrain the concentrations of W, Mo, Ru, Pd, Au, Ni, and Co in the lunar magma ocean at the time of core formation. The metal-silicate derived lunar mantle estimates are generally consistent with previous estimates for the concentration of these elements in the lunar mantle. Plagioclase-melt derived concentrations for Sr, Ga, Ru, Pd, Au, Ni, and Co are also consistent with prior estimates. Estimates for Hf, W, and Mo, however, are higher. These elements may be concentrated in the residual liquid during fractional crystallization due to their incompatibility. Alternatively, the apparent enrichment could reflect the inappropriate use of bulk anorthosite data, rather than data for plagioclase separates. Abstract Copyright The Meteoritical Society, 2015. JF - Meteoritics & Planetary Science AU - Sharp, Miriam AU - Righter, Kevin AU - Walker, Richard J Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 733 EP - 758 PB - Meteoritical Society, Fayetteville, AR VL - 50 IS - 4 SN - 1086-9379, 1086-9379 KW - silicates KW - nuggets KW - igneous rocks KW - enrichment KW - melts KW - electron probe data KW - partitioning KW - plutonic rocks KW - framework silicates KW - trace elements KW - plagioclase KW - magma oceans KW - experimental studies KW - Moon KW - incompatible elements KW - silicate melts KW - siderophile elements KW - anorthosite KW - partition coefficients KW - flotation KW - metals KW - magmas KW - lunar mantle KW - core KW - fractional crystallization KW - feldspar group KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700098656?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=Estimation+of+trace+element+concentrations+in+the+lunar+magma+ocean+using+mineral-+and+metal-silicate+melt+partition+coefficients&rft.au=Sharp%2C+Miriam%3BRighter%2C+Kevin%3BWalker%2C+Richard+J&rft.aulast=Sharp&rft.aufirst=Miriam&rft.date=2015-04-01&rft.volume=50&rft.issue=4&rft.spage=733&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12396 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 119 N1 - PubXState - AR N1 - Document feature - illus. incl. 9 tables N1 - Last updated - 2015-07-30 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - anorthosite; core; electron probe data; enrichment; experimental studies; feldspar group; flotation; fractional crystallization; framework silicates; igneous rocks; incompatible elements; lunar mantle; magma oceans; magmas; melts; metals; Moon; nuggets; partition coefficients; partitioning; plagioclase; plutonic rocks; siderophile elements; silicate melts; silicates; trace elements DO - http://dx.doi.org/10.1111/maps.12396 ER - TY - JOUR T1 - Siderophile and chalcophile element abundances in shergottites; implications for Martian core formation AN - 1700098372; 2015-073223 AB - Elemental abundances for volatile siderophile and chalcophile elements for Mars inform us about processes of accretion and core formation. Such data are few for Martian meteorites, and are often lacking in the growing number of desert finds. In this study, we employed laser ablation inductively coupled plasma-mass spectrometry (LA-ICP-MS) to analyze polished slabs of 15 Martian meteorites for the abundances of about 70 elements. This technique has high sensitivity, excellent precision, and is generally accurate as determined by comparisons of elements for which literature abundances are known. However, in some meteorites, the analyzed surface is not representative of the bulk composition due to the over- or underrepresentation of a key host mineral, e.g., phosphate for rare earth elements (REE). For other meteorites, the range of variation in bulk rastered analyses of REE is within the range of variation reported among bulk REE analyses in the literature. An unexpected benefit has been the determination of the abundances of Ir and Os with a precision and accuracy comparable to the isotope dilution technique. Overall, the speed and small sample consumption afforded by this technique makes it an important tool widely applicable to small or rare meteorites for which a polished sample was prepared. The new volatile siderophile and chalcophile element abundances have been employed to determine Ge and Sb abundances, and revise Zn, As, and Bi abundances for the Martian mantle. The new estimates of Martian mantle composition support core formation at intermediate pressures (14 + or - 3 GPa) in a magma ocean on Mars. Abstract Copyright The Meteoritical Society, 2015. JF - Meteoritics & Planetary Science AU - Yang, Shuying AU - Humayun, Munir AU - Righter, Kevin AU - Jefferson, Gwendolyn AU - Fields, Dana AU - Irving, Anthony J Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 691 EP - 714 PB - Meteoritical Society, Fayetteville, AR VL - 50 IS - 4 SN - 1086-9379, 1086-9379 KW - zinc KW - stony meteorites KW - Martian meteorites KW - bismuth KW - mass spectra KW - mantle KW - Mars KW - platinum group KW - iridium KW - SNC Meteorites KW - meteorites KW - spectra KW - rare earths KW - chemical composition KW - magma oceans KW - antimony KW - accretion KW - pressure KW - arsenic KW - siderophile elements KW - achondrites KW - terrestrial planets KW - isotope dilution KW - ICP mass spectra KW - planets KW - volatiles KW - shergottite KW - metals KW - germanium KW - osmium KW - core KW - chalcophile elements KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700098372?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=Siderophile+and+chalcophile+element+abundances+in+shergottites%3B+implications+for+Martian+core+formation&rft.au=Yang%2C+Shuying%3BHumayun%2C+Munir%3BRighter%2C+Kevin%3BJefferson%2C+Gwendolyn%3BFields%2C+Dana%3BIrving%2C+Anthony+J&rft.aulast=Yang&rft.aufirst=Shuying&rft.date=2015-04-01&rft.volume=50&rft.issue=4&rft.spage=691&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12384 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 104 N1 - PubXState - AR N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2015-07-30 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - accretion; achondrites; antimony; arsenic; bismuth; chalcophile elements; chemical composition; core; germanium; ICP mass spectra; iridium; isotope dilution; magma oceans; mantle; Mars; Martian meteorites; mass spectra; metals; meteorites; osmium; planets; platinum group; pressure; rare earths; shergottite; siderophile elements; SNC Meteorites; spectra; stony meteorites; terrestrial planets; volatiles; zinc DO - http://dx.doi.org/10.1111/maps.12384 ER - TY - JOUR T1 - A partial melting study of an ordinary (H) chondrite composition with application to the unique achondrite Graves Nunataks 06128 and 06129 AN - 1700098350; 2015-073226 AB - Melting experiments of a synthesized, alkali-bearing, H-chondrite composition were conducted at ambient pressure with three distinct oxygen fugacity conditions (IW-1, IW, and IW+2). Oxygen fugacity conditions significantly influence the compositions of partial melts. Partial melts at IW-1 are distinctly enriched in SiO (sub 2) relative to those of IW and IW+2 melts. The silica-enriched, reduced (IW-1) melts are characterized by high alkali contents and have silica-oversaturated compositions. In contrast, the silica-depleted, oxidized (> or =IW) melts, which are also enriched in alkali contents, have distinctly silica-undersaturated compositions. These experimental results suggest that alkali-rich, felsic, asteroidal crusts as represented by paired achondrites Graves Nunataks 06128 and 06129 should originate from a low-degree, relatively reduced partial melt from a parent body having near-chondritic compositions. Based on recent chronological constraints and numerical considerations as well as our experimental results, we propose that such felsic magmatism should have occurred in a parent body that is smaller in size and commenced accreting later than those highly differentiated asteroids having basaltic crusts and metallic cores. Abstract Copyright The Meteoritical Society, 2015. JF - Meteoritics & Planetary Science AU - Usui, Tomohiro AU - Jones, John H AU - Mittlefehldt, David W Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 759 EP - 781 PB - Meteoritical Society, Fayetteville, AR VL - 50 IS - 4 SN - 1086-9379, 1086-9379 KW - ordinary chondrites KW - stony meteorites KW - oxygen KW - asteroids KW - partial melting KW - fugacity KW - meteorites KW - chronology KW - phase equilibria KW - volatile elements KW - chondrites KW - chemical composition KW - basaltic composition KW - synthetic materials KW - experimental studies KW - GRA 06128 KW - accretion KW - parent bodies KW - magmatism KW - differentiation KW - alkali metals KW - H chondrites KW - sodium KW - GRA 06129 KW - felsic composition KW - achondrites KW - Graves Nunataks Meteorites KW - metals KW - potassium KW - core KW - crust KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700098350?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=A+partial+melting+study+of+an+ordinary+%28H%29+chondrite+composition+with+application+to+the+unique+achondrite+Graves+Nunataks+06128+and+06129&rft.au=Usui%2C+Tomohiro%3BJones%2C+John+H%3BMittlefehldt%2C+David+W&rft.aulast=Usui&rft.aufirst=Tomohiro&rft.date=2015-04-01&rft.volume=50&rft.issue=4&rft.spage=759&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12392 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 68 N1 - PubXState - AR N1 - Document feature - illus. incl. 9 tables N1 - Last updated - 2015-07-30 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - accretion; achondrites; alkali metals; asteroids; basaltic composition; chemical composition; chondrites; chronology; core; crust; differentiation; experimental studies; felsic composition; fugacity; GRA 06128; GRA 06129; Graves Nunataks Meteorites; H chondrites; magmatism; metals; meteorites; ordinary chondrites; oxygen; parent bodies; partial melting; phase equilibria; potassium; sodium; stony meteorites; synthetic materials; volatile elements DO - http://dx.doi.org/10.1111/maps.12392 ER - TY - JOUR T1 - The OSIRIS-REx target asteroid (101955) Bennu; constraints on its physical, geological, and dynamical nature from astronomical observations AN - 1700098172; 2015-073229 AB - We review the results of an extensive campaign to determine the physical, geological, and dynamical properties of asteroid (101955) Bennu. This investigation provides information on the orbit, shape, mass, rotation state, radar response, photometric, spectroscopic, thermal, regolith, and environmental properties of Bennu. We combine these data with cosmochemical and dynamical models to develop a hypothetical timeline for Bennu's formation and evolution. We infer that Bennu is an ancient object that has witnessed over 4.5 Gyr of solar system history. Its chemistry and mineralogy were established within the first 10 Myr of the solar system. It likely originated as a discrete asteroid in the inner Main Belt approximately 0.7-2 Gyr ago as a fragment from the catastrophic disruption of a large (approximately 100-km), carbonaceous asteroid. It was delivered to near-Earth space via a combination of Yarkovsky-induced drift and interaction with giant-planet resonances. During its journey, YORP processes and planetary close encounters modified Bennu's spin state, potentially reshaping and resurfacing the asteroid. We also review work on Bennu's future dynamical evolution and constrain its ultimate fate. It is one of the most Potentially Hazardous Asteroids with an approximately 1-in-2700 chance of impacting the Earth in the late 22nd century. It will most likely end its dynamical life by falling into the Sun. The highest probability for a planetary impact is with Venus, followed by the Earth. There is a chance that Bennu will be ejected from the inner solar system after a close encounter with Jupiter. OSIRIS-REx will return samples from the surface of this intriguing asteroid in September 2023. Abstract Copyright The Meteoritical Society, 2014. JF - Meteoritics & Planetary Science AU - Lauretta, D S AU - Bartels, A E AU - Barucci, M A AU - Bierhaus, E B AU - Binzel, R P AU - Bottke, W F AU - Campins, H AU - Chesley, S R AU - Clark, B C AU - Clark, B E AU - Cloutis, E A AU - Connolly, H C AU - Crombie, M K AU - Delbo, M AU - Dworkin, J P AU - Emery, J P AU - Glavin, D P AU - Hamilton, V E AU - Hergenrother, C W AU - Johnson, C L AU - Keller, L P AU - Michel, Patrick AU - Nolan, M C AU - Sandford, S A AU - Scheeres, D J AU - Simon, Amy A AU - Sutter, B M AU - Vokrouhlicky, D AU - Walsh, K J Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 834 EP - 849 PB - Meteoritical Society, Fayetteville, AR VL - 50 IS - 4 SN - 1086-9379, 1086-9379 KW - asteroids KW - orbits KW - Venus KW - sample return KW - OSIRIS-REx Mission KW - Bennu Asteroid KW - giant planets KW - mass KW - photometry KW - dynamics KW - rotation KW - probability KW - main-belt asteroids KW - solar system KW - Earth KW - asteroid belts KW - grain size KW - statistical analysis KW - Origins, Spectral Interpretation, Resource Identification, and Security REgolith Explorer KW - impacts KW - YORP effect KW - terrestrial planets KW - models KW - planets KW - resonance KW - Yarkovsky effect KW - fragments KW - natural hazards KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700098172?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=The+OSIRIS-REx+target+asteroid+%28101955%29+Bennu%3B+constraints+on+its+physical%2C+geological%2C+and+dynamical+nature+from+astronomical+observations&rft.au=Lauretta%2C+D+S%3BBartels%2C+A+E%3BBarucci%2C+M+A%3BBierhaus%2C+E+B%3BBinzel%2C+R+P%3BBottke%2C+W+F%3BCampins%2C+H%3BChesley%2C+S+R%3BClark%2C+B+C%3BClark%2C+B+E%3BCloutis%2C+E+A%3BConnolly%2C+H+C%3BCrombie%2C+M+K%3BDelbo%2C+M%3BDworkin%2C+J+P%3BEmery%2C+J+P%3BGlavin%2C+D+P%3BHamilton%2C+V+E%3BHergenrother%2C+C+W%3BJohnson%2C+C+L%3BKeller%2C+L+P%3BMichel%2C+Patrick%3BNolan%2C+M+C%3BSandford%2C+S+A%3BScheeres%2C+D+J%3BSimon%2C+Amy+A%3BSutter%2C+B+M%3BVokrouhlicky%2C+D%3BWalsh%2C+K+J&rft.aulast=Lauretta&rft.aufirst=D&rft.date=2015-04-01&rft.volume=50&rft.issue=4&rft.spage=834&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12353 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 47 N1 - PubXState - AR N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2015-07-30 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - asteroid belts; asteroids; Bennu Asteroid; dynamics; Earth; fragments; giant planets; grain size; impacts; main-belt asteroids; mass; models; natural hazards; orbits; Origins, Spectral Interpretation, Resource Identification, and Security REgolith Explorer; OSIRIS-REx Mission; photometry; planets; probability; regolith; resonance; rotation; sample return; solar system; statistical analysis; terrestrial planets; Venus; Yarkovsky effect; YORP effect DO - http://dx.doi.org/10.1111/maps.12353 ER - TY - JOUR T1 - Various aspects of the petrogenesis of the Martian shergottite meteorites AN - 1700097917; 2015-073222 AB - Several controversies are associated with the age and origin of the shergottite meteorites, a suite of basaltic samples from Mars. Here, it will be argued that (1) the shergottites have a young igneous age, < or =600 Myr, (2) their parent magmas were relatively dry, (3) the range of initial isotopic compositions in shergottites is most likely due to assimilation of crustal materials by mantle-derived basaltic magmas, and (4) the intercumulus liquid compositions of shergottites such as Shergotty and Zagami are relatively well constrained. Abstract Copyright The Meteoritical Society, 2015. JF - Meteoritics & Planetary Science AU - Jones, John H Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 674 EP - 690 PB - Meteoritical Society, Fayetteville, AR VL - 50 IS - 4 SN - 1086-9379, 1086-9379 KW - volcanic rocks KW - stony meteorites KW - isotopes KW - Martian meteorites KW - igneous rocks KW - stable isotopes KW - melts KW - Rb/Sr KW - SNC Meteorites KW - assimilation KW - meteorites KW - radioactive isotopes KW - plutonic rocks KW - Sm-147/Nd-144 KW - dates KW - cumulates KW - basalts KW - absolute age KW - water content KW - samarium KW - rare earths KW - Pb/Pb KW - alkaline earth metals KW - incompatible elements KW - isotope ratios KW - achondrites KW - ultramafics KW - Nd-144/Nd-143 KW - Sr-87/Sr-86 KW - shergottite KW - Sm/Nd KW - metals KW - magmas KW - crystallization KW - dehydration KW - neodymium KW - strontium KW - 05B:Petrology of meteorites and tektites KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700097917?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=Various+aspects+of+the+petrogenesis+of+the+Martian+shergottite+meteorites&rft.au=Jones%2C+John+H&rft.aulast=Jones&rft.aufirst=John&rft.date=2015-04-01&rft.volume=50&rft.issue=4&rft.spage=674&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12421 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 88 N1 - PubXState - AR N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2015-11-19 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - absolute age; achondrites; alkaline earth metals; assimilation; basalts; crystallization; cumulates; dates; dehydration; igneous rocks; incompatible elements; isotope ratios; isotopes; magmas; Martian meteorites; melts; metals; meteorites; Nd-144/Nd-143; neodymium; Pb/Pb; plutonic rocks; radioactive isotopes; rare earths; Rb/Sr; samarium; shergottite; Sm-147/Nd-144; Sm/Nd; SNC Meteorites; Sr-87/Sr-86; stable isotopes; stony meteorites; strontium; ultramafics; volcanic rocks; water content DO - http://dx.doi.org/10.1111/maps.12421 ER - TY - JOUR T1 - Highly siderophile element (HSE) abundances in the mantle of Mars are due to core formation at high pressure and temperature AN - 1700097156; 2015-073219 AB - Highly siderophile elements (HSEs) can be used to understand accretion and core formation in differentiated bodies, due to their strong affinity for FeNi metal and sulfides. Coupling experimental studies of metal-silicate partitioning with analyses of HSE contents of Martian meteorites can thus offer important constraints on the early history of Mars. Here, we report new metal-silicate partitioning data for the PGEs and Au and Re across a wide range of pressure and temperature space, with three series designed to complement existing experimental data sets for HSE. The first series examines temperature effects for D(HSE) in two metallic liquid compositions-C-bearing and C-free. The second series examines temperature effects for D(Re) in FeO-bearing silicate melts and FeNi-rich alloys. The third series presents the first systematic study of high pressure and temperature effects for D(Au). We then combine our data with previously published partitioning data to derive predictive expressions for metal-silicate partitioning of the HSE, which are subsequently used to calculate HSE concentrations of the Martian mantle during continuous accretion of Mars. Our results show that at midmantle depths in an early magma ocean (equivalent to approximately 14 GPa, 2100 degrees C), the HSE contents of the silicate fraction are similar to those observed in the Martian meteorite suite. This is in concert with previous studies on moderately siderophile elements. We then consider model calculations that examine the role of melting, fractional crystallization, and sulfide saturation/undersaturation in establishing the range of HSE contents in Martian meteorites derived from melting of the postcore formation mantle. The core formation modeling indicates that the HSE contents can be established by metal-silicate equilibrium early in the history of Mars, thus obviating the need for a late veneer for HSE, and by extension volatile siderophile elements, or volatiles in general. Abstract Copyright The Meteoritical Society, 2015. JF - Meteoritics & Planetary Science AU - Righter, Kevin AU - Danielson, L R AU - Pando, K M AU - Williams, J AU - Humayun, Munir AU - Hervig, R L AU - Sharp, T G Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 604 EP - 631 PB - Meteoritical Society, Fayetteville, AR VL - 50 IS - 4 SN - 1086-9379, 1086-9379 KW - silicates KW - stony meteorites KW - Martian meteorites KW - rhenium KW - mantle KW - Mars KW - platinum group KW - iron KW - temperature KW - partitioning KW - meteorites KW - melting KW - chronology KW - alloys KW - gold KW - magma oceans KW - experimental studies KW - accretion KW - pressure KW - differentiation KW - siderophile elements KW - high pressure KW - achondrites KW - depth KW - terrestrial planets KW - models KW - planets KW - volatiles KW - metals KW - magmas KW - planetary interiors KW - nickel KW - core KW - fractional crystallization KW - sulfides KW - high temperature KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700097156?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=Highly+siderophile+element+%28HSE%29+abundances+in+the+mantle+of+Mars+are+due+to+core+formation+at+high+pressure+and+temperature&rft.au=Righter%2C+Kevin%3BDanielson%2C+L+R%3BPando%2C+K+M%3BWilliams%2C+J%3BHumayun%2C+Munir%3BHervig%2C+R+L%3BSharp%2C+T+G&rft.aulast=Righter&rft.aufirst=Kevin&rft.date=2015-04-01&rft.volume=50&rft.issue=4&rft.spage=604&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12393 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 184 N1 - PubXState - AR N1 - Document feature - illus. incl. 5 tables, sketch map N1 - Last updated - 2015-07-30 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - accretion; achondrites; alloys; chronology; core; depth; differentiation; experimental studies; fractional crystallization; gold; high pressure; high temperature; iron; magma oceans; magmas; mantle; Mars; Martian meteorites; melting; metals; meteorites; models; nickel; partitioning; planetary interiors; planets; platinum group; pressure; rhenium; siderophile elements; silicates; stony meteorites; sulfides; temperature; terrestrial planets; volatiles DO - http://dx.doi.org/10.1111/maps.12393 ER - TY - JOUR T1 - Natural occurrence of monoclinic Fe (sub 3) S (sub 4) nano-precipitates in pyrrhotite from the Sudbury ore deposit; a Z-contrast imaging and density functional theory study AN - 1696873380; 2015-070002 AB - A monoclinic form of Fe (sub 3) S (sub 4) , a polymorph of cubic greigite, occurs as precipitates in a sample of pyrrhotite collected from the Sudbury ore deposit. The nano-crystal precipitates are in a topotaxial relationship with the host pyrrhotite-4C (Fe (sub 7) S (sub 8) ). The precipitate and the host pyrrhotite have a coherent (001) interface. Half of the octahedral layers in the crystal structure are fully occupied by Fe, while the other half of the octahedral layers are occupied by Fe atoms and vacancies in an ordered manner along the a axis. The crystal structure of the Fe (sub 3) S (sub 4) nano-precipitates has monoclinic symmetry with a space group of I2/m. Its c dimension is 6% smaller than that of the host pyrrhotite due to the large number of vacancies in the structure. Fractional coordinates for S and Fe atoms within the unit cell are determined from Z-contrast images and density functional theory (DFT). The calculated results match the measured values very well. It is proposed that the monoclinic Fe (sub 3) S (sub 4) nano-precipitates formed through ordering of vacancies in pyrrhotite with a low Fe/S ratio (i.e. <0.875) at low temperature. JF - Mineralogical Magazine AU - Xu, Huifang AU - Shen, Zhizhang AU - Konishi, Hiromi Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 377 EP - 385 PB - Mineralogical Society, London VL - 79 IS - 2 SN - 0026-461X, 0026-461X KW - imagery KW - crystal systems KW - unit cell KW - crystal structure KW - temperature KW - polymorphism KW - brezinaite KW - magnetic minerals KW - greigite KW - occurrence KW - copper ores KW - monoclinic system KW - pyrrhotite KW - cubic system KW - transmission electron microscopy KW - Sudbury District Ontario KW - density functional theory KW - space groups KW - electron microscopy data KW - TEM data KW - Ontario KW - Canada KW - iron sulfides KW - precipitation KW - nickel ores KW - metal ores KW - low temperature KW - Eastern Canada KW - sulfides KW - nanoparticles KW - 01C:Mineralogy of non-silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696873380?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Mineralogical+Magazine&rft.atitle=Natural+occurrence+of+monoclinic+Fe+%28sub+3%29+S+%28sub+4%29+nano-precipitates+in+pyrrhotite+from+the+Sudbury+ore+deposit%3B+a+Z-contrast+imaging+and+density+functional+theory+study&rft.au=Xu%2C+Huifang%3BShen%2C+Zhizhang%3BKonishi%2C+Hiromi&rft.aulast=Xu&rft.aufirst=Huifang&rft.date=2015-04-01&rft.volume=79&rft.issue=2&rft.spage=377&rft.isbn=&rft.btitle=&rft.title=Mineralogical+Magazine&rft.issn=0026461X&rft_id=info:doi/10.1180%2Fminmag.2015.079.2.15 L2 - http://www.minersoc.org/pages/e_journals/minmag.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Abstract, Copyright, Mineralogical Society of Great Britain and Ireland | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2015-01-01 N1 - Number of references - 24 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2015-07-17 N1 - CODEN - MNLMBB N1 - SubjectsTermNotLitGenreText - brezinaite; Canada; copper ores; crystal structure; crystal systems; cubic system; density functional theory; Eastern Canada; electron microscopy data; greigite; imagery; iron sulfides; low temperature; magnetic minerals; metal ores; monoclinic system; nanoparticles; nickel ores; occurrence; Ontario; polymorphism; precipitation; pyrrhotite; space groups; Sudbury District Ontario; sulfides; TEM data; temperature; transmission electron microscopy; unit cell DO - http://dx.doi.org/10.1180/minmag.2015.079.2.15 ER - TY - JOUR T1 - Evidence for crater ejecta on Venus tessera terrain from Earth-based radar images AN - 1692742726; 2015-060389 AB - We combine Earth-based radar maps of Venus from the 1988 and 2012 inferior conjunctions, which had similar viewing geometries. Processing of both datasets with better image focusing and co-registration techniques, and summing over multiple looks, yields maps with 1-2 km spatial resolution and improved signal to noise ratio, especially in the weaker same-sense circular (SC) polarization. The SC maps are unique to Earth-based observations, and offer a different view of surface properties from orbital mapping using same-sense linear (HH or VV) polarization. Highland or tessera terrains on Venus, which may retain a record of crustal differentiation and processes occurring prior to the loss of water, are of great interest for future spacecraft landings. The Earth-based radar images reveal multiple examples of tessera mantling by impact "parabolas" or "haloes", and can extend mapping of locally thick material from Magellan data by revealing thinner deposits over much larger areas. Of particular interest is an ejecta deposit from Stuart crater that we infer to mantle much of eastern Alpha Regio. Some radar-dark tessera occurrences may indicate sediments that are trapped for longer periods than in the plains. We suggest that such radar information is important for interpretation of orbital infrared data and selection of future tessera landing sites. JF - Icarus AU - Campbell, Bruce A AU - Campbell, Donald B AU - Morgan, Gareth A AU - Carter, Lynn M AU - Nolan, Michael C AU - Chandler, John F Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 123 EP - 130 PB - Elsevier, New York, NY VL - 250 SN - 0019-1035, 0019-1035 KW - cratering KW - polarization KW - imagery KW - impact features KW - Magellan Program KW - Venus KW - mapping KW - landing sites KW - infrared spectra KW - sediments KW - tesserae KW - spectra KW - orbital observations KW - Earth-based observations KW - Zirka Tessera KW - radar methods KW - polarimetry KW - Stuart Crater KW - highlands KW - ejecta KW - Mukhina Crater KW - terrestrial planets KW - planets KW - Alpha Regio KW - Browning Crater KW - impact craters KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692742726?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Evidence+for+crater+ejecta+on+Venus+tessera+terrain+from+Earth-based+radar+images&rft.au=Campbell%2C+Bruce+A%3BCampbell%2C+Donald+B%3BMorgan%2C+Gareth+A%3BCarter%2C+Lynn+M%3BNolan%2C+Michael+C%3BChandler%2C+John+F&rft.aulast=Campbell&rft.aufirst=Bruce&rft.date=2015-04-01&rft.volume=250&rft.issue=&rft.spage=123&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.11.025 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 39 N1 - PubXState - NY N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2015-11-19 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - Alpha Regio; Browning Crater; cratering; Earth-based observations; ejecta; highlands; imagery; impact craters; impact features; infrared spectra; landing sites; Magellan Program; mapping; Mukhina Crater; orbital observations; planets; polarimetry; polarization; radar methods; sediments; spectra; Stuart Crater; terrestrial planets; tesserae; Venus; Zirka Tessera DO - http://dx.doi.org/10.1016/j.icarus.2014.11.025 ER - TY - JOUR T1 - Titan's liquids; exotic behavior and its implications on global fluid circulation AN - 1692742719; 2015-060386 AB - Based on a validated model for cryogenic chemical systems, referred to as CRYOCHEM ("Cryogenic Chemistry Model"), surface liquids on Titan are shown to exhibit exotic behavior of density increase with temperature but decrease with pressure, unless the temperature falls below 89.8 K. It is also the case for the atmospheric liquid condensates below an altitude where the liquid density is minimum. The exotic behavior is of compositional origin, which does not have an analog in the atmosphere and liquid water on Earth. As the latitudinal and seasonal variations of surface temperature are known, it is possible to map out the global liquid and vapor density variations as well as the equilibrium phase compositions, which will be useful as inputs for atmospheric general circulation models (GCMs) and investigations of Titan's methane-equivalent of Earth's hydrological cycle, local subsurface alkanology (equivalent to hydrology on Earth), lake convection, and clastic and chemical sedimentation in the lakes. Further, the density variations can be used to derive a general idea about global fluid circulation in the upper crust based on averaged conditions on Titan. The surface liquid should tend to flow toward the hottest spot on Titan and a return flow occurs beneath the surface, thus providing analogies with thermohaline circulation in Earth's oceans. The vapor phase, on the other hand, has ordinary properties that make the global atmospheric circulation similar to the Hadley cell on Earth, but Titan's cycle reaches the polar regions. The calculated compositions of surface liquids are more methane-rich than other models indicated, thus qualitatively in the right direction to satisfy polar-lake compositions deduced from loss tangents. However, quantitatively there remains a need to find yet more accurate liquid compositions and an optimum equilibrium within constraints of the atmospheric measurements. JF - Icarus AU - Tan, Sugata P AU - Kargel, Jeffrey S AU - Jennings, Donald E AU - Mastrogiuseppe, Marco AU - Adidharma, Hertanto AU - Marion, Giles M Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 64 EP - 75 PB - Elsevier, New York, NY VL - 250 SN - 0019-1035, 0019-1035 KW - icy satellites KW - density KW - altitude KW - aliphatic hydrocarbons KW - temperature KW - hydrologic cycle KW - phase equilibria KW - circulation KW - Titan Satellite KW - condensates KW - satellites KW - water KW - liquid phase KW - general circulation models KW - polar regions KW - methane KW - global KW - fluid flow KW - atmosphere KW - properties KW - alkanes KW - Cryogenic Chemistry Model KW - thermohaline circulation KW - organic compounds KW - hydrocarbons KW - CRYOCHEM KW - latitude KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692742719?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Titan%27s+liquids%3B+exotic+behavior+and+its+implications+on+global+fluid+circulation&rft.au=Tan%2C+Sugata+P%3BKargel%2C+Jeffrey+S%3BJennings%2C+Donald+E%3BMastrogiuseppe%2C+Marco%3BAdidharma%2C+Hertanto%3BMarion%2C+Giles+M&rft.aulast=Tan&rft.aufirst=Sugata&rft.date=2015-04-01&rft.volume=250&rft.issue=&rft.spage=64&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.11.029 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 37 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table, sketch map N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-07-02 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; altitude; atmosphere; circulation; condensates; CRYOCHEM; Cryogenic Chemistry Model; density; fluid flow; general circulation models; global; hydrocarbons; hydrologic cycle; icy satellites; latitude; liquid phase; methane; organic compounds; phase equilibria; polar regions; properties; satellites; temperature; thermohaline circulation; Titan Satellite; water DO - http://dx.doi.org/10.1016/j.icarus.2014.11.029 ER - TY - JOUR T1 - Insolation patterns on eccentric exoplanets AN - 1692742710; 2015-060409 AB - Several studies have found that synchronously-rotating Earth-like planets in the habitable zones of M-dwarf stars should exhibit an "eyeball" climate pattern, with a pupil of open ocean facing the parent star, and ice everywhere else. Recent work on eccentric exoplanets by Wang et al. (Wang, Y., Tian, F., Hu, Y. [2014b] Astrophys. J. 791, L12) has extended this conclusion to the 2:1 spin-orbit resonance as well, where the planet rotates twice during one orbital period. However, Wang et al. also found that the 3:2 and 5:2 half-odd resonances produce a zonally-striped climate pattern with polar icecaps instead. Unfortunately, they used incorrect insolation functions for the 3:2 and 5:2 resonances whose long-term time averages are essentially independent of longitude. This paper presents the correct insolation patterns for eccentric exoplanets with negligible obliquities in the 0:1, 1:2, 1:1, 3:2, 2:1, 5:2, 3:1, 7:2, and 4:1 spin-orbit resonances. I confirm that the mean insolation is distributed in an eyeball pattern for integer resonances; but for half-odd resonances, the mean insolation takes a "double-eyeball" pattern, identical over the "eastern" and "western" hemispheres. Presuming that liquids, ices, clouds, albedo, and thermal emission are similarly distributed, this has significant implications for the observation and interpretation of potentially habitable exoplanets. Finally, whether a striped ball, eyeball, or double-eyeball pattern emerges, the possibility exists that long-term build-up of ice (or liquid) away from the hot spots may alter the planet's inertia tensor and quadrupole moments enough to re-orient the planet, ultimately changing the distribution of liquid and ice. JF - Icarus AU - Dobrovolskis, Anthony R Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 395 EP - 399 PB - Elsevier, New York, NY VL - 250 SN - 0019-1035, 0019-1035 KW - liquid phase KW - obliquity of the ecliptic KW - extrasolar planets KW - orbits KW - habitable zone KW - eccentricity KW - terrestrial planets KW - planets KW - resonance KW - dynamics KW - stars KW - rotation KW - ice KW - dwarf stars KW - insolation KW - climate KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692742710?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Insolation+patterns+on+eccentric+exoplanets&rft.au=Dobrovolskis%2C+Anthony+R&rft.aulast=Dobrovolskis&rft.aufirst=Anthony&rft.date=2015-04-01&rft.volume=250&rft.issue=&rft.spage=395&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.12.017 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 19 N1 - PubXState - NY N1 - Document feature - illus. N1 - Last updated - 2015-07-02 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - climate; dwarf stars; dynamics; eccentricity; extrasolar planets; habitable zone; ice; insolation; liquid phase; obliquity of the ecliptic; orbits; planets; resonance; rotation; stars; terrestrial planets DO - http://dx.doi.org/10.1016/j.icarus.2014.12.017 ER - TY - JOUR T1 - Seasonal evolution of Saturn's polar temperatures and composition AN - 1692742398; 2015-060390 AB - The seasonal evolution of Saturn's polar atmospheric temperatures and hydrocarbon composition is derived from a decade of Cassini Composite Infrared Spectrometer (CIRS) 7-16 mu m thermal infrared spectroscopy. We construct a near-continuous record of atmospheric variability poleward of 60 degrees from northern winter/southern summer (2004, L (sub s) =293 degrees ) through the equinox (2009, L (sub s) =0 degrees ) to northern spring/southern autumn (2014, L (sub s) =56 degrees ). The hot tropospheric polar cyclones that are entrained by prograde jets within 2-3 degrees of each pole, and the hexagonal shape of the north polar belt, are both persistent features throughout the decade of observations. The hexagon vertices rotated westward by approximately 30 degrees longitude between March 2007 and April 2013, confirming that they are not stationary in the Voyager-defined System III longitude system as previously thought. Tropospheric temperature contrasts between the cool polar zones (near 80-85 degrees ) and warm polar belts (near 75-80 degrees ) have varied in both hemispheres, resulting in changes to the vertical windshear on the zonal jets in the upper troposphere and lower stratosphere. The extended region of south polar stratospheric emission has cooled dramatically poleward of the sharp temperature gradient near 75 degrees S (by approximately approximately 5 K/yr), coinciding with a depletion in the abundances of acetylene (0.030+ or -0.005 ppm/yr) and ethane (0.35+ or -0.1 ppm/yr), and suggestive of stratospheric upwelling with vertical wind speeds of w nearly equal +0.1 mm/s. The upwelling appears most intense within 5 degrees latitude of the south pole. This is mirrored by a general warming of the northern polar stratosphere (+5 K/yr) and an enhancement in acetylene (0.030+ or -0.003 ppm/yr) and ethane (0.45+ or -0.1 ppm/yr) abundances that appears to be most intense poleward of 75 degrees N, suggesting subsidence at w nearly equal -0.15 mm/s. However, the sharp gradient in stratospheric emission expected to form near 75 degrees N by northern summer solstice (2017, L (sub s) =90 degrees ) has not yet been observed, so we continue to await the development of a northern summer stratospheric vortex. The peak stratospheric warming in the north occurs at lower pressure levels (p1 mbar). Vertical motions are derived from both the temperature field (using the measured rates of temperature change and the deviations from the expectations of radiative equilibrium models) and hydrocarbon distributions (solving the continuity equation). Vertical velocities tend towards zero in the upper troposphere where seasonal temperature contrasts are smaller, except within the tropospheric polar cyclones where w nearly equal 0.02 mm/s. North polar minima in tropospheric and stratospheric temperatures were detected in 2008-2010 (lagging one season, or 6-8 years, behind winter solstice); south polar maxima appear to have occurred before the start of the Cassini observations (1-2 years after summer solstice), consistent with the expectations of radiative climate models. The influence of dynamics implies that the coldest winter temperatures occur in the 75-80 degrees region in the stratosphere, and in the cool polar zones in the troposphere, rather than at the poles themselves. In addition to vertical motions, we propose that the UV-absorbent polar stratospheric aerosols entrained within Saturn's vortices contribute significantly to the radiative budget at the poles, adding to the localised enhancement in the south polar cooling and north polar warming poleward of + or -75 degrees . JF - Icarus AU - Fletcher, Leigh N AU - Irwin, P G J AU - Sinclair, J A AU - Orton, G S AU - Giles, R S AU - Hurley, J AU - Gorius, N AU - Achterberg, R K AU - Hesman, B E AU - Bjoraker, G L Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 131 EP - 153 PB - Elsevier, New York, NY VL - 250 SN - 0019-1035, 0019-1035 KW - upwelling KW - aliphatic hydrocarbons KW - troposphere KW - ethane KW - temperature KW - infrared spectra KW - giant planets KW - Saturn KW - atmospheric circulation KW - Cassini-Huygens Mission KW - aceteylene KW - stratosphere KW - composition KW - storms KW - spectra KW - outer planets KW - climate KW - polar regions KW - atmosphere KW - vorticity KW - alkanes KW - cyclones KW - planets KW - organic compounds KW - hydrocarbons KW - aerosols KW - seasonal variations KW - winds KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692742398?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Seasonal+evolution+of+Saturn%27s+polar+temperatures+and+composition&rft.au=Fletcher%2C+Leigh+N%3BIrwin%2C+P+G+J%3BSinclair%2C+J+A%3BOrton%2C+G+S%3BGiles%2C+R+S%3BHurley%2C+J%3BGorius%2C+N%3BAchterberg%2C+R+K%3BHesman%2C+B+E%3BBjoraker%2C+G+L&rft.aulast=Fletcher&rft.aufirst=Leigh&rft.date=2015-04-01&rft.volume=250&rft.issue=&rft.spage=131&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.11.022 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 51 N1 - PubXState - NY N1 - Document feature - illus. N1 - Last updated - 2015-07-02 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - aceteylene; aerosols; aliphatic hydrocarbons; alkanes; atmosphere; atmospheric circulation; Cassini-Huygens Mission; climate; composition; cyclones; ethane; giant planets; hydrocarbons; infrared spectra; organic compounds; outer planets; planets; polar regions; Saturn; seasonal variations; spectra; storms; stratosphere; temperature; troposphere; upwelling; vorticity; winds DO - http://dx.doi.org/10.1016/j.icarus.2014.11.022 ER - TY - JOUR T1 - Stratigraphy of the Caloris Basin, Mercury; implications for volcanic history and basin impact melt AN - 1692742214; 2015-060412 AB - Caloris basin, Mercury's youngest large impact basin, is filled by volcanic plains that are spectrally distinct from surrounding material. Post-plains impact craters of a variety of sizes populate the basin interior, and the spectra of the material they have excavated enable the thickness of the volcanic fill to be estimated and reveal the nature of the subsurface. The thickness of the interior volcanic plains is consistently at least 2.5 km, reaching 3.5 km in places, with thinner fill toward the edge of the basin. No systematic variations in fill thickness are observed with long-wavelength topography or azimuth. The lack of correlation between plains thickness and variations in elevation at large horizontal scales within the basin indicates that plains emplacement must have predated most, if not all, of the changes in long-wavelength topography that affected the basin. There are no embayed or unambiguously buried (ghost) craters with diameters greater than 10 km in the Caloris interior plains. The absence of such ghost craters indicates that one or more of the following scenarios must hold: the plains are sufficiently thick to have buried all evidence of craters that formed between the Caloris impact event and the emplacement of the plains; the plains were emplaced soon after basin formation; or the complex tectonic deformation of the basin interior has disguised wrinkle-ridge rings localized by buried craters. That low-reflectance material (LRM) was exposed by every impact that penetrated through the surface volcanic plains provides a means to explore near-surface stratigraphy. If all occurrences of LRM are derived from a single layer, the subsurface LRM deposit is at least 7.5-8.5 km thick and its top likely once made up the Caloris basin floor. The Caloris-forming impact would have generated a layer of impact melt 3-15 km thick; such a layer could account for the entire thickness of LRM. This material would have been derived from a combination of lower crust and upper mantle. JF - Icarus AU - Ernst, Carolyn M AU - Denevi, Brett W AU - Barnouin, Olivier S AU - Klimczak, Christian AU - Chabot, Nancy L AU - Head, James W AU - Murchie, Scott L AU - Neumann, Gregory A AU - Prockter, Louise M AU - Robinson, Mark S AU - Solomon, Sean C AU - Watters, Thomas R Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 413 EP - 429 PB - Elsevier, New York, NY VL - 250 SN - 0019-1035, 0019-1035 KW - cratering KW - imagery KW - volcanic rocks KW - impact features KW - Caloris Basin KW - igneous rocks KW - wrinkle ridges KW - crater fill KW - melts KW - depth KW - terrestrial planets KW - planets KW - impact melts KW - volcanism KW - Mercury Planet KW - thickness KW - impact craters KW - orbital observations KW - MESSENGER Mission KW - reflectance KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692742214?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Stratigraphy+of+the+Caloris+Basin%2C+Mercury%3B+implications+for+volcanic+history+and+basin+impact+melt&rft.au=Ernst%2C+Carolyn+M%3BDenevi%2C+Brett+W%3BBarnouin%2C+Olivier+S%3BKlimczak%2C+Christian%3BChabot%2C+Nancy+L%3BHead%2C+James+W%3BMurchie%2C+Scott+L%3BNeumann%2C+Gregory+A%3BProckter%2C+Louise+M%3BRobinson%2C+Mark+S%3BSolomon%2C+Sean+C%3BWatters%2C+Thomas+R&rft.aulast=Ernst&rft.aufirst=Carolyn&rft.date=2015-04-01&rft.volume=250&rft.issue=&rft.spage=413&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.11.003 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 86 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables, sketch maps N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-07-02 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - Caloris Basin; crater fill; cratering; depth; igneous rocks; imagery; impact craters; impact features; impact melts; melts; Mercury Planet; MESSENGER Mission; orbital observations; planets; reflectance; terrestrial planets; thickness; volcanic rocks; volcanism; wrinkle ridges DO - http://dx.doi.org/10.1016/j.icarus.2014.11.003 ER - TY - JOUR T1 - Impact vaporization as a possible source of Mercury's calcium exosphere AN - 1692741871; 2015-060396 AB - Mercury's calcium exosphere varies in a periodic way with that planet's true anomaly. We show that this pattern can be explained by impact vaporization from interplanetary dust with variations being due to Mercury's radial and vertical excursions through an interplanetary dust disk having an inclination within 5 degrees of the plane of Mercury's orbit. Both a highly inclined dust disk and a two-disk model (where the two disks have a mutual inclination) fail to reproduce the observed variation in calcium exospheric abundance with Mercury true anomaly angle. However, an additional source of impacting dust beyond the nominal dust disk is required near Mercury's true anomaly (v) 25 degrees + or - 5 degrees . This is close to but not coincident with Mercury's true anomaly (v = 45 degrees ) when it crosses Comet 2P/Encke's present day orbital plane. Interestingly, the Taurid meteor storms at Earth, which are also due to Comet Encke, are observed to occur when Earth's true anomaly is + or -20 or so degrees before and after the position where Earth and Encke orbital planes cross. The lack of exact correspondence with the present day orbit of Encke may indicate the width of the potential stream along Mercury's orbit or a previous cometary orbit. The extreme energy of the escaping calcium, estimated to have a temperature >50,000 K if the source is thermal, cannot be due to the impact process itself but must be imparted by an additional mechanism such as dissociation of a calcium-bearing molecule or ionization followed by recombination. JF - Icarus AU - Killen, Rosemary M AU - Hahn, Joseph M Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 230 EP - 237 PB - Elsevier, New York, NY VL - 250 SN - 0019-1035, 0019-1035 KW - calcium KW - dissociation KW - orbits KW - Encke Comet KW - interplanetary dust KW - temperature KW - exosphere KW - eccentricity KW - volatilization KW - Mercury Planet KW - ultraviolet spectra KW - spectra KW - MASCS instrument KW - alkaline earth metals KW - patterns KW - atmosphere KW - anomalies KW - impacts KW - terrestrial planets KW - planets KW - cosmic dust KW - comets KW - metals KW - meteor showers KW - seasonal variations KW - MESSENGER Mission KW - Taurid meteor shower KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692741871?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Impact+vaporization+as+a+possible+source+of+Mercury%27s+calcium+exosphere&rft.au=Killen%2C+Rosemary+M%3BHahn%2C+Joseph+M&rft.aulast=Killen&rft.aufirst=Rosemary&rft.date=2015-04-01&rft.volume=250&rft.issue=&rft.spage=230&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.11.035 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - PubXState - NY N1 - Last updated - 2015-07-02 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - alkaline earth metals; anomalies; atmosphere; calcium; comets; cosmic dust; dissociation; eccentricity; Encke Comet; exosphere; impacts; interplanetary dust; MASCS instrument; Mercury Planet; MESSENGER Mission; metals; meteor showers; orbits; patterns; planets; seasonal variations; spectra; Taurid meteor shower; temperature; terrestrial planets; ultraviolet spectra; volatilization DO - http://dx.doi.org/10.1016/j.icarus.2014.11.035 ER - TY - JOUR T1 - The origin and implications of clay minerals from Yellowknife Bay, Gale Crater, Mars AN - 1686057514; 2015-052272 AB - The Mars Science Laboratory (MSL) rover Curiosity has documented a section of fluvio-lacustrine strata at Yellowknife Bay (YKB), an embayment on the floor of Gale crater, approximately 500 m east of the Bradbury landing site. X-ray diffraction (XRD) data and evolved gas analysis (EGA) data from the CheMin and SAM instruments show that two powdered mudstone samples (named John Klein and Cumberland) drilled from the Sheepbed member of this succession contain up to approximately 20 wt% clay minerals. A trioctahedral smectite, likely a ferrian saponite, is the only clay mineral phase detected in these samples. Smectites of the two samples exhibit different 001 spacing under the low partial pressures of H (sub 2) O inside the CheMin instrument (relative humidity <1%). Smectite interlayers in John Klein collapsed sometime between clay mineral formation and the time of analysis to a basal spacing of 10 A, but largely remain open in the Cumberland sample with a basal spacing of approximately 13.2 A. Partial intercalation of Cumberland smectites by metal-hydroxyl groups, a common process in certain pedogenic and lacustrine settings on Earth, is our favored explanation for these differences.The relatively low abundances of olivine and enriched levels of magnetite in the Sheepbed mudstone, when compared with regional basalt compositions derived from orbital data, suggest that clay minerals formed with magnetite in situ via aqueous alteration of olivine. Mass-balance calculations are permissive of such a reaction. Moreover, the Sheepbed mudstone mineral assemblage is consistent with minimal inputs of detrital clay minerals from the crater walls and rim. Early diagenetic fabrics suggest clay mineral formation prior to lithification. Thermodynamic modeling indicates that the production of authigenic magnetite and saponite at surficial temperatures requires a moderate supply of oxidants, allowing circum-neutral pH. The kinetics of olivine alteration suggest the presence of fluids for thousands to hundreds of thousands of years. Mineralogical evidence of the persistence of benign aqueous conditions at YKB for extended periods indicates a potentially habitable environment where life could establish itself. Mediated oxidation of Fe (super 2+) in olivine to Fe (super 3+) in magnetite, and perhaps in smectites provided a potential energy source for organisms. JF - American Mineralogist AU - Bristow, Thomas F AU - Bish, David L AU - Vaniman, David T AU - Morris, Richard V AU - Blake, David F AU - Grotzinger, John P AU - Rampe, Elizabeth B AU - Crisp, Joy A AU - Achilles, Cherie N AU - Ming, Doug W AU - Ehlmann, Bethany L AU - King, Penelope L AU - Bridges, John C AU - Eigenbrode, Jennifer L AU - Sumner, Dawn Y AU - Chipera, Steve J AU - Moorokian, John Michael AU - Treiman, Allan H AU - Morrison, Shaunna M AU - Downs, Robert T AU - Farmer, Jack D AU - Marais, David Des AU - Sarrazin, Philippe AU - Floyd, Melissa M AU - Mischna, Michael A AU - McAdam, Amy C Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 824 EP - 836 PB - Mineralogical Society of America, Washington, DC VL - 100 IS - 4 SN - 0003-004X, 0003-004X KW - silicates KW - impact features KW - X-ray diffraction data KW - techniques KW - olivine group KW - Mars KW - landing sites KW - iron KW - Gale Crater KW - ferric iron KW - sedimentary rocks KW - olivine KW - Curiosity Rover KW - orthosilicates KW - oxides KW - pH KW - Yellowknife Bay KW - mudstone KW - saponite KW - surface water KW - smectite KW - Bradbury landing site KW - samples KW - ferrous iron KW - clay minerals KW - terrestrial planets KW - nesosilicates KW - aqueous alteration KW - planets KW - hydroxyl ion KW - habitability KW - metals KW - lacustrine environment KW - sheet silicates KW - impact craters KW - fluviolacustrine environment KW - fluvial environment KW - clastic rocks KW - instruments KW - magnetite KW - 01B:Mineralogy of silicates KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1686057514?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Mineralogist&rft.atitle=The+origin+and+implications+of+clay+minerals+from+Yellowknife+Bay%2C+Gale+Crater%2C+Mars&rft.au=Bristow%2C+Thomas+F%3BBish%2C+David+L%3BVaniman%2C+David+T%3BMorris%2C+Richard+V%3BBlake%2C+David+F%3BGrotzinger%2C+John+P%3BRampe%2C+Elizabeth+B%3BCrisp%2C+Joy+A%3BAchilles%2C+Cherie+N%3BMing%2C+Doug+W%3BEhlmann%2C+Bethany+L%3BKing%2C+Penelope+L%3BBridges%2C+John+C%3BEigenbrode%2C+Jennifer+L%3BSumner%2C+Dawn+Y%3BChipera%2C+Steve+J%3BMoorokian%2C+John+Michael%3BTreiman%2C+Allan+H%3BMorrison%2C+Shaunna+M%3BDowns%2C+Robert+T%3BFarmer%2C+Jack+D%3BMarais%2C+David+Des%3BSarrazin%2C+Philippe%3BFloyd%2C+Melissa+M%3BMischna%2C+Michael+A%3BMcAdam%2C+Amy+C&rft.aulast=Bristow&rft.aufirst=Thomas&rft.date=2015-04-01&rft.volume=100&rft.issue=4&rft.spage=824&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam-2015-5077CCBYNCND L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2015-01-01 N1 - Number of references - 101 N1 - PubXState - DC N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2015-06-05 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - aqueous alteration; Bradbury landing site; clastic rocks; clay minerals; Curiosity Rover; ferric iron; ferrous iron; fluvial environment; fluviolacustrine environment; Gale Crater; habitability; hydroxyl ion; impact craters; impact features; instruments; iron; lacustrine environment; landing sites; magnetite; Mars; metals; mudstone; nesosilicates; olivine; olivine group; orthosilicates; oxides; pH; planets; samples; saponite; sedimentary rocks; sheet silicates; silicates; smectite; surface water; techniques; terrestrial planets; X-ray diffraction data; Yellowknife Bay DO - http://dx.doi.org/10.2138/am-2015-5077CCBYNCND ER - TY - JOUR T1 - Urban flood modeling with porous shallow water equations; a case study of model errors in the presence of anisotropic porosity AN - 1680751669; 2015-041768 AB - Porous shallow-water models (porosity models) simulate urban flood flows orders of magnitude faster than classical shallow-water models due to a relatively coarse grid and large time step, enabling flood hazard mapping over far greater spatial extents than is possible with classical shallow-water models. Here the errors of both isotropic and anisotropic porosity models are examined in the presence of anisotropic porosity, i.e., unevenly spaced obstacles in the cross-flow and along-flow directions, which is common in practical applications. We show that porosity models are affected by three types of errors: (a) structural model error associated with limitations of the shallow-water equations, (b) scale errors associated with use of a relatively coarse grid, and (c) porosity model errors associated with the formulation of the porosity equations to account for sub-grid scale obstructions. Results from a unique laboratory test case with strong anisotropy indicate that porosity model errors are smaller than structural model errors, and that porosity model errors in both depth and velocity are substantially smaller for anisotropic versus isotropic porosity models. Test case results also show that the anisotropic porosity model is equally accurate as classical shallow-water models when compared directly to gage measurements, while the isotropic model is less accurate. Further, results show the anisotropic porosity model resolves flow variability at smaller spatial scales than the isotropic model because the latter is restricted by the assumption of a Representative Elemental Volume (REV) which is considerably larger than the size of obstructions. These results point to anisotropic porosity models as being well-suited to whole-city urban flood prediction, but also reveal that point-scale flow attributes relevant to flood risk such as localized wakes and wave reflections from flow obstructions may not be resolved. Abstract Copyright (2015) Elsevier, B.V. JF - Journal of Hydrology AU - Kim, Byunghyun AU - Sanders, Brett F AU - Famiglietti, James S AU - Guinot, Vincent Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 680 EP - 692 PB - Elsevier, Amsterdam VL - 523 SN - 0022-1694, 0022-1694 KW - geologic hazards KW - representative elemental volume KW - data processing KW - mapping KW - calibration KW - urban environment KW - reservoir rocks KW - ground water KW - spatial distribution KW - laboratory studies KW - shallow depth KW - errors KW - movement KW - floods KW - velocity KW - experimental studies KW - risk management KW - surface water KW - prediction KW - porous materials KW - equations KW - models KW - runoff KW - mathematical methods KW - volume KW - natural hazards KW - isotropy KW - reservoir properties KW - accuracy KW - anisotropy KW - 21:Hydrogeology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680751669?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydrology&rft.atitle=Urban+flood+modeling+with+porous+shallow+water+equations%3B+a+case+study+of+model+errors+in+the+presence+of+anisotropic+porosity&rft.au=Kim%2C+Byunghyun%3BSanders%2C+Brett+F%3BFamiglietti%2C+James+S%3BGuinot%2C+Vincent&rft.aulast=Kim&rft.aufirst=Byunghyun&rft.date=2015-04-01&rft.volume=523&rft.issue=&rft.spage=680&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology&rft.issn=00221694&rft_id=info:doi/10.1016%2Fj.jhydrol.2015.01.059 L2 - http://www.sciencedirect.com/science/journal/00221694 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2015-01-01 N1 - Number of references - 23 N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2016-10-25 N1 - CODEN - JHYDA7 N1 - SubjectsTermNotLitGenreText - accuracy; anisotropy; calibration; data processing; equations; errors; experimental studies; floods; geologic hazards; ground water; isotropy; laboratory studies; mapping; mathematical methods; models; movement; natural hazards; porous materials; prediction; representative elemental volume; reservoir properties; reservoir rocks; risk management; runoff; shallow depth; spatial distribution; surface water; urban environment; velocity; volume DO - http://dx.doi.org/10.1016/j.jhydrol.2015.01.059 ER - TY - JOUR T1 - Combined Winds and Turbulence Prediction System for Automated Air-Traffic Management Applications AN - 1680451086; PQ0001496249 AB - A time-lagged ensemble of energy dissipation rate (EDR)-scale turbulence metrics is evaluated against in situ EDR observations from commercial aircraft over the contiguous United States and applied to air-traffic management (ATM) route planning. This method uses the Graphic Turbulence Guidance forecast methodology with three modifications. First, it uses the convection-permitting-scale ( Delta x = 3 km) Advanced Research version of the Weather Research and Forecasting Model (ARW) to capture cloud-resolving-scale weather phenomena. Second, turbulence metrics are computed for multiple ARW forecasts that are combined at the same forecast valid time, resulting in a time-lagged ensemble of multiple turbulence metrics. Third, probabilistic turbulence forecasts are provided on the basis of the ensemble results, which are applied to the ATM route planning. Results show that the ARW forecasts match well with observed weather patterns and the overall performance skill of the ensemble turbulence forecast when compared with the observed data is superior to any single turbulence metric. An example wind-optimal route (WOR) is computed using areas experiencing greater than or equal to 10% probability of encountering severe-or-greater turbulence. Using these turbulence data, lateral turbulence avoidance routes starting from three different waypoints along the WOR from Los Angeles International Airport to John F. Kennedy International Airport are calculated. The examples illustrate the trade-off between flight time/fuel used and turbulence avoidance maneuvers. JF - Journal of Applied Meteorology and Climatology AU - Kim, Jung-Hoon AU - Chan, William N AU - Sridhar, Banavar AU - Sharman, Robert D AD - NASA Ames Research Center, and Oak Ridge Associated Universities, Moffett Field, California Y1 - 2015/04// PY - 2015 DA - Apr 2015 SP - 766 EP - 784 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 54 IS - 4 SN - 1558-8424, 1558-8424 KW - Meteorological & Geoastrophysical Abstracts; Environment Abstracts KW - Turbulence KW - Optimization KW - Ensembles KW - Numerical weather prediction/forecasting KW - Probability forecasts/models/distribution KW - Transportation meteorology KW - Prediction KW - USA, California, Los Angeles KW - Weather KW - Aviation KW - Fuels KW - Airports KW - Energy dissipation KW - Clouds KW - USA KW - Aircraft KW - Meteorology KW - Climatology KW - Wind KW - M2 551.509.1/.5:Forecasting (551.509.1/.5) KW - ENA 18:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680451086?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Applied+Meteorology+and+Climatology&rft.atitle=Combined+Winds+and+Turbulence+Prediction+System+for+Automated+Air-Traffic+Management+Applications&rft.au=Kim%2C+Jung-Hoon%3BChan%2C+William+N%3BSridhar%2C+Banavar%3BSharman%2C+Robert+D&rft.aulast=Kim&rft.aufirst=Jung-Hoon&rft.date=2015-04-01&rft.volume=54&rft.issue=4&rft.spage=766&rft.isbn=&rft.btitle=&rft.title=Journal+of+Applied+Meteorology+and+Climatology&rft.issn=15588424&rft_id=info:doi/10.1175%2FJAMC-D-14-0216.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-01 N1 - Number of references - 49 N1 - Last updated - 2015-11-16 N1 - SubjectsTermNotLitGenreText - Clouds; Aviation; Climatology; Prediction; Weather; Aircraft; Fuels; Meteorology; Airports; Energy dissipation; Turbulence; Wind; USA, California, Los Angeles; USA DO - http://dx.doi.org/10.1175/JAMC-D-14-0216.1 ER - TY - JOUR T1 - Water disequilibrium in olivines from Hawaiian peridotites; Recent metasomatism, H diffusion and magma ascent rates AN - 1676590952; 2015-039673 AB - Constraining the distribution and mobility of H in olivine, the main mineral of the upper mantle, is crucial to our understanding of Earth's geodynamics because this trace element influences melting, rheology, and electrical and thermal conductivities of peridotite. For this purpose, the olivines from fresh and well-characterized peridotite xenoliths from Salt Lake Crater and Pali (Oahu, Hawaii), representing samples of the oceanic mantle lithosphere, were analyzed by FTIR. Water concentrations decrease from core to edge and near fractures of olivine grains, and are best interpreted as H loss during xenolith ascent to the surface in its host magma. Diffusion modeling of these profiles allowed the calculation of diffusion times, which were in turn used to estimate the average ascent rates of the xenolith host nephelinite at 0.2-25.3 m s (super -1) . These rates are similar to those of continental basaltic magmas. Diffusion modeling further shows that the water contents at the core of olivines are preserved mantle values and are heterogeneous within each xenolith. In addition, the discrepant behavior of the 3225 cm (super -1) OH band (due to H in a Mg vacancy) relative to the other OH bands (in particular the Ti-H defect) along profiles evidences that H is heterogeneously distributed amongst olivine defects. These defect profiles are modeled to calculate that the diffusion rate of the Mg-H defect is about 1.3-6.8 times faster than that of the Ti-H defect. The heterogeneous distribution of H in the mantle between olivine cores in single xenoliths and within olivine grains testifies of a state of disequilibrium for water in these samples. The Salt Lake Crater peridotite olivines record two processes; recent metasomatism by a melt bringing water followed by water loss during ascent in the host magma, neither having lasted long enough for water to reach equilibrium. The observed decoupling between the heterogeneous distribution of H and the homogeneous distribution of lithophile elements suggests that the process of water addition to the peridotite via incipient melt metasomatism was likely interrupted by the host nephelinite removing the samples from the mantle and bringing them to the surface. Abstract Copyright (2015) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Peslier, Anne H AU - Bizimis, Michael AU - Matney, Mark Y1 - 2015/04/01/ PY - 2015 DA - 2015 Apr 01 SP - 98 EP - 117 PB - Elsevier, New York, NY VL - 154 SN - 0016-7037, 0016-7037 KW - United States KW - olivinite KW - volcanic rocks KW - igneous rocks KW - phase transitions KW - metasomatism KW - Holocene KW - infrared spectra KW - electron probe data KW - Cenozoic KW - FTIR spectra KW - plutonic rocks KW - mineral composition KW - major elements KW - water-rock interaction KW - volcanism KW - inclusions KW - water content KW - spectra KW - trace elements KW - Pali Hawaii KW - xenoliths KW - water KW - diffusion KW - Quaternary KW - Honolulu County Hawaii KW - Oahu KW - Hawaii KW - East Pacific Ocean Islands KW - equilibrium KW - ultramafics KW - models KW - Salt Lake Crater KW - magmas KW - hydrogen KW - eruptions KW - peridotites KW - Oceania KW - Polynesia KW - mobilization KW - crystal chemistry KW - nephelinite KW - 02C:Geochemistry of rocks, soils, and sediments KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1676590952?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geochimica+et+Cosmochimica+Acta&rft.atitle=Water+disequilibrium+in+olivines+from+Hawaiian+peridotites%3B+Recent+metasomatism%2C+H+diffusion+and+magma+ascent+rates&rft.au=Peslier%2C+Anne+H%3BBizimis%2C+Michael%3BMatney%2C+Mark&rft.aulast=Peslier&rft.aufirst=Anne&rft.date=2015-04-01&rft.volume=154&rft.issue=&rft.spage=98&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2015.01.030 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2015-01-01 N1 - Number of references - 159 N1 - PubXState - NY N1 - Document feature - illus. N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-04-30 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - Cenozoic; crystal chemistry; diffusion; East Pacific Ocean Islands; electron probe data; equilibrium; eruptions; FTIR spectra; Hawaii; Holocene; Honolulu County Hawaii; hydrogen; igneous rocks; inclusions; infrared spectra; magmas; major elements; metasomatism; mineral composition; mobilization; models; nephelinite; Oahu; Oceania; olivinite; Pali Hawaii; peridotites; phase transitions; plutonic rocks; Polynesia; Quaternary; Salt Lake Crater; spectra; trace elements; ultramafics; United States; volcanic rocks; volcanism; water; water content; water-rock interaction; xenoliths DO - http://dx.doi.org/10.1016/j.gca.2015.01.030 ER - TY - JOUR T1 - Evaluating reaction pathways of hydrothermal abiotic organic synthesis at elevated temperatures and pressures using carbon isotopes AN - 1676590182; 2015-039667 AB - Experiments were performed to better understand the role of environmental factors on reaction pathways and corresponding carbon isotope fractionations during abiotic hydrothermal synthesis of organic compounds using piston cylinder apparatus at 750 degrees C and 5.5 kbars. Chemical compositions of experimental products and corresponding carbon isotopic values were obtained by a Pyrolysis-GC-MS-IRMS system. Alkanes (methane and ethane), straight-chain saturated alcohols (ethanol and n-butanol) and monocarboxylic acids (formic and acetic acids) were generated with ethanol being the only organic compound with higher delta (super 13) C than CO (sub 2) . CO was not detected in experimental products owing to the favorable water-gas shift reaction under high water pressure conditions. The pattern of delta (super 13) C values of CO (sub 2) , carboxylic acids and alkanes are consistent with their equilibrium isotope relationships: CO (sub 2) > carboxylic acids > alkanes, but the magnitude of the fractionation among them is higher than predicted isotope equilibrium values. In particular, the isotopic fractionation between CO (sub 2) and CH (sub 4) remained constant at approximately 31 ppm, indicating a kinetic effect during CO (sub 2) reduction processes. No "isotope reversal" of delta (super 13) C values for alkanes or carboxylic acids was observed, which indicates a different reaction pathway than what is typically observed during Fischer-Tropsch synthesis under gas phase conditions. Under constraints imposed in experiments, the anomalous (super 13) C isotope enrichment in ethanol suggests that hydroxymethylene is the organic intermediate, and that the generation of other organic compounds enriched in (super 12) C were facilitated by subsequent Rayleigh fractionation of hydroxymethylene reacting with H (sub 2) and/or H (sub 2) O. Carbon isotope fractionation data obtained in this study are instrumental in assessing the controlling factors on abiotic formation of organic compounds in hydrothermal systems. Knowledge on how environmental conditions affect reaction pathways of abiotic synthesis of organic compounds is critical for understanding deep subsurface ecosystems and the origin of organic compounds on Mars and other planets. Abstract Copyright (2015) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Fu, Qi AU - Socki, Richard A AU - Niles, Paul B Y1 - 2015/04/01/ PY - 2015 DA - 2015 Apr 01 SP - 1 EP - 17 PB - Elsevier, New York, NY VL - 154 SN - 0016-7037, 0016-7037 KW - isotope fractionation KW - isotopes KW - hydrothermal vents KW - gas chromatograms KW - aliphatic hydrocarbons KW - mass spectra KW - Mars KW - ecosystems KW - stable isotopes KW - temperature KW - exploration KW - carbon dioxide KW - acetic acid KW - Mid-Atlantic Ridge KW - chemical reactions KW - pyrolysis KW - phase equilibria KW - carbon KW - carboxylic acids KW - alcohols KW - spectra KW - reduction KW - synthesis KW - kinetics KW - isotope ration mass spectra KW - P-T conditions KW - experimental studies KW - pressure KW - isotope ratios KW - biochemistry KW - C-13/C-12 KW - Fischer-Tropsch reactions KW - alkanes KW - high pressure KW - hydrothermal conditions KW - terrestrial planets KW - planets KW - organic compounds KW - organic acids KW - chromatograms KW - hydrocarbons KW - North Atlantic KW - high temperature KW - Atlantic Ocean KW - Rainbow hydrothermal field KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1676590182?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geochimica+et+Cosmochimica+Acta&rft.atitle=Evaluating+reaction+pathways+of+hydrothermal+abiotic+organic+synthesis+at+elevated+temperatures+and+pressures+using+carbon+isotopes&rft.au=Fu%2C+Qi%3BSocki%2C+Richard+A%3BNiles%2C+Paul+B&rft.aulast=Fu&rft.aufirst=Qi&rft.date=2015-04-01&rft.volume=154&rft.issue=&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2015.01.027 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2015-01-01 N1 - Number of references - 177 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2015-08-13 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - acetic acid; alcohols; aliphatic hydrocarbons; alkanes; Atlantic Ocean; biochemistry; C-13/C-12; carbon; carbon dioxide; carboxylic acids; chemical reactions; chromatograms; ecosystems; experimental studies; exploration; Fischer-Tropsch reactions; gas chromatograms; high pressure; high temperature; hydrocarbons; hydrothermal conditions; hydrothermal vents; isotope fractionation; isotope ration mass spectra; isotope ratios; isotopes; kinetics; Mars; mass spectra; Mid-Atlantic Ridge; North Atlantic; organic acids; organic compounds; P-T conditions; phase equilibria; planets; pressure; pyrolysis; Rainbow hydrothermal field; reduction; spectra; stable isotopes; synthesis; temperature; terrestrial planets DO - http://dx.doi.org/10.1016/j.gca.2015.01.027 ER - TY - JOUR T1 - Assimilation of Freeze-Thaw Observations into the NASA Catchment Land Surface Model AN - 1676351426; PQ0001432680 AB - The land surface freeze-thaw (F/T) state plays a key role in the hydrological and carbon cycles and thus affects water and energy exchanges and vegetation productivity at the land surface. In this study, an F/T assimilation algorithm was developed for the NASA Goddard Earth Observing System, version 5 (GEOS-5), modeling and assimilation framework. The algorithm includes a newly developed observation operator that diagnoses the landscape F/T state in the GEOS-5 Catchment land surface model. The F/T analysis is a rule-based approach that adjusts Catchment model state variables in response to binary F/T observations, while also considering forecast and observation errors. A regional observing system simulation experiment was conducted using synthetically generated F/T observations. The assimilation of perfect (error free) F/T observations reduced the root-mean-square errors (RMSEs) of surface temperature and soil temperature by 0.206 degree and 0.061 degree C, respectively, when compared to model estimates (equivalent to a relative RMSE reduction of 6.7% and 3.1%, respectively). For a maximum classification error CE sub(max) of 10% in the synthetic F/T observations, the F/T assimilation reduced the RMSE of surface temperature and soil temperature by 0.178 degree and 0.036 degree C, respectively. For CE sub(max) = 20%, the F/T assimilation still reduces the RMSE of model surface temperature estimates by 0.149 degree C but yields no improvement over the model soil temperature estimates. The F/T assimilation scheme is being developed to exploit planned F/T products from the NASA Soil Moisture Active Passive (SMAP) mission. JF - Journal of Hydrometeorology AU - Farhadi, Leila AU - Reichle, Rolf H AU - De Lannoy, Gabrieelle J AU - Kimball, John S AD - Global Modeling and Assimilation Office, NASA Goddard Flight Center, Greenbelt, Maryland, and Department of Civil and Environmental Engineering, George Washington University, Washington, D.C. Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 730 EP - 743 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 16 IS - 2 SN - 1525-755X, 1525-755X KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Data assimilation KW - Land surface model KW - Catchment area KW - Surface temperatures KW - Meteorological data KW - Algorithms KW - Hydrologic Models KW - Carbon KW - Catchment basins KW - Classification KW - Topography KW - Modelling KW - Soil temperatures KW - Hydrologic analysis KW - Mathematical models KW - Soil Temperature KW - Catchment Areas KW - Temperature KW - Carbon cycle KW - Errors KW - Hydrometeorology KW - Hydrometeorological research KW - Numerical simulations KW - Soil moisture KW - Q2 09283:Soil mechanics KW - SW 0810:General KW - AQ 00003:Monitoring and Analysis of Water and Wastes KW - M2 551.509.1/.5:Forecasting (551.509.1/.5) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1676351426?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydrometeorology&rft.atitle=Assimilation+of+Freeze-Thaw+Observations+into+the+NASA+Catchment+Land+Surface+Model&rft.au=Farhadi%2C+Leila%3BReichle%2C+Rolf+H%3BDe+Lannoy%2C+Gabrieelle+J%3BKimball%2C+John+S&rft.aulast=Farhadi&rft.aufirst=Leila&rft.date=2015-04-01&rft.volume=16&rft.issue=2&rft.spage=730&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrometeorology&rft.issn=1525755X&rft_id=info:doi/10.1175%2FJHM-D-14-0065.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-04-01 N1 - Number of references - 52 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Catchment area; Mathematical models; Classification; Carbon cycle; Modelling; Meteorological data; Surface temperatures; Hydrometeorological research; Soil temperatures; Hydrologic analysis; Numerical simulations; Catchment basins; Algorithms; Soil moisture; Data assimilation; Topography; Hydrometeorology; Carbon; Hydrologic Models; Catchment Areas; Soil Temperature; Temperature; Errors DO - http://dx.doi.org/10.1175/JHM-D-14-0065.1 ER - TY - JOUR T1 - Predictive safety analytics: inferring aviation accident shaping factors and causation AN - 1676087738; 4666872 AB - This paper illustrates the development of an object-oriented Bayesian network (OOBN) to integrate the safety risks contributing to an in-flight loss-of-control aviation accident. With the creation of a probabilistic model, inferences about changes to the states of the accident shaping or causal factors can be drawn quantitatively. These predictive safety inferences derive from qualitative reasoning to conclusions based on data, assumptions, and/or premises, and enable an analyst to identify the most prominent causal factors leading to a risk factor prioritization. Such an approach facilitates a mitigation portfolio study and assessment. The model also facilitates the computation of sensitivity values based on perturbations to the estimates in the conditional probability tables. Such computations lead to identifying the most sensitive causal factors with respect to an accident probability. This approach may lead to vulnerability discovery of emerging causal factors for which mitigations do not yet exist that then informs possible future RandD efforts. To illustrate the benefits of an OOBN in a large and complex aviation accident model, the in-flight loss-of-control accident framework model is presented. Reprinted by permission of Carfax Publishing, Taylor & Francis Ltd JF - Journal of risk research AU - Ancel, Ersin AU - Shih, Ann T AU - Jones, Sharon M AU - Reveley, Mary S AU - Luxhøj, James T AU - Evans, Joni K AD - National Institute of Aerospace, USA ; NASA Langley Research Center, USA ; Luxhøj Consulting and Research LLC, USA ; Analytical Mechanics Associates, Inc., USA Y1 - 2015/04// PY - 2015 DA - Apr 2015 SP - 428 EP - 451 VL - 18 IS - 4 SN - 1366-9877, 1366-9877 KW - Economics KW - Accidents KW - Statistics KW - Probability calculus KW - Safety KW - Air transport KW - Air traffic KW - Risk theory KW - Bayesian method UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1676087738?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aibss&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+risk+research&rft.atitle=Predictive+safety+analytics%3A+inferring+aviation+accident+shaping+factors+and+causation&rft.au=Ancel%2C+Ersin%3BShih%2C+Ann+T%3BJones%2C+Sharon+M%3BReveley%2C+Mary+S%3BLuxh%C3%B8j%2C+James+T%3BEvans%2C+Joni+K&rft.aulast=Ancel&rft.aufirst=Ersin&rft.date=2015-04-01&rft.volume=18&rft.issue=4&rft.spage=428&rft.isbn=&rft.btitle=&rft.title=Journal+of+risk+research&rft.issn=13669877&rft_id=info:doi/10.1080%2F13669877.2014.896402 LA - English DB - International Bibliography of the Social Sciences (IBSS) N1 - Date revised - 2015-04-27 N1 - Last updated - 2015-04-28 N1 - SubjectsTermNotLitGenreText - 1512 3865 4025; 12233; 897 12937; 896 12889 12937; 524; 10215 1921 7824; 11229; 11040 11035 DO - http://dx.doi.org/10.1080/13669877.2014.896402 ER - TY - JOUR T1 - Big questions, big science: meeting the challenges of global ecology AN - 1673396241; PQ0001353992 AB - Ecologists are increasingly tackling questions that require significant infrastucture, large experiments, networks of observations, and complex data and computation. Key hypotheses in ecology increasingly require more investment, and larger data sets to be tested than can be collected by a single investigator's or s group of investigator's labs, sustained for longer than a typical grant. Large-scale projects are expensive, so their scientific return on the investment has to justify the opportunity cost-the science foregone because resources were expended on a large project rather than supporting a number of individual projects. In addition, their management must be accountable and efficient in the use of significant resources, requiring the use of formal systems engineering and project management to mitigate risk of failure. Mapping the scientific method into formal project management requires both scientists able to work in the context, and a project implementation team sensitive to the unique requirements of ecology. Sponsoring agencies, under pressure from external and internal forces, experience many pressures that push them towards counterproductive project management but a scientific community aware and experienced in large project science can mitigate these tendencies. For big ecology to result in great science, ecologists must become informed, aware and engaged in the advocacy and governance of large ecological projects. JF - Oecologia AU - Schimel, David AU - Keller, Michael AD - Jet Propulsion Lab, California Institute of Technology, Pasadena, 91101, California, USA, dschimel@jpl.nasa.gov Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 925 EP - 934 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 177 IS - 4 SN - 0029-8549, 0029-8549 KW - Ecology Abstracts KW - Data processing KW - Mapping KW - Pressure KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1673396241?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Oecologia&rft.atitle=Big+questions%2C+big+science%3A+meeting+the+challenges+of+global+ecology&rft.au=Schimel%2C+David%3BKeller%2C+Michael&rft.aulast=Schimel&rft.aufirst=David&rft.date=2015-04-01&rft.volume=177&rft.issue=4&rft.spage=925&rft.isbn=&rft.btitle=&rft.title=Oecologia&rft.issn=00298549&rft_id=info:doi/10.1007%2Fs00442-015-3236-3 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-04-01 N1 - Number of references - 27 N1 - Last updated - 2016-02-18 N1 - SubjectsTermNotLitGenreText - Data processing; Mapping; Pressure DO - http://dx.doi.org/10.1007/s00442-015-3236-3 ER - TY - JOUR T1 - Hhex regulates Kit to promote radioresistance of self-renewing thymocytes in Lmo2-transgenic mice AN - 1672073527 AB - Lmo2 is an oncogenic transcription factor that is frequently overexpressed in T-cell acute leukemias, in particular poor prognosis early T-cell precursor-like (ETP-) acute lymphoblastic leukemia (ALL). The primary effect of Lmo2 is to cause self-renewal of developing CD4 - CD8- (double negative, DN) T cells in the thymus, leading to serially transplantable thymocytes that eventually give rise to leukemia. These self-renewing thymocytes are intrinsically radioresistant implying that they may be a source of leukemia relapse after therapy. The homeobox transcription factor, Hhex, is highly upregulated in Lmo2-transgenic thymocytes and can phenocopy Lmo2 in inducing thymocyte self-renewal, implying that Hhex may be a key component of the Lmo2-induced self-renewal program. To test this, we conditionally deleted Hhex in the thymi of Lmo2-transgenic mice. Surprisingly, this did not prevent accumulation of DN thymocytes, nor alter the rate of overt leukemia development. However, deletion of Hhex abolished the transplantation capacity of Lmo2-transgenic thymocytes and overcame their radioresistance. We found that Hhex regulates Kit expression in Lmo2-transgenic thymocytes and that abrogation of Kit signaling phenocopied loss of Hhex in abolishing the transplantation capacity and radioresistance of these cells. Thus, targeting the Kit signaling pathway may facilitate the eradication of leukemia-initiating cells in immature T-cell leukemias in which it is expressed. JF - Leukemia AU - Shields, B J AU - Alserihi, R AU - Nasa, C AU - Bogue, C AU - Alexander, W S AU - Mccormack, M P Y1 - 2015/04// PY - 2015 DA - Apr 2015 SP - 927 EP - 938 CY - London PB - Nature Publishing Group VL - 29 IS - 4 SN - 08876924 KW - Medical Sciences--Oncology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1672073527?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ahealthcompleteshell&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Leukemia&rft.atitle=Hhex+regulates+Kit+to+promote+radioresistance+of+self-renewing+thymocytes+in+Lmo2-transgenic+mice&rft.au=Shields%2C+B+J%3BAlserihi%2C+R%3BNasa%2C+C%3BBogue%2C+C%3BAlexander%2C+W+S%3BMccormack%2C+M+P&rft.aulast=Shields&rft.aufirst=B&rft.date=2015-04-01&rft.volume=29&rft.issue=4&rft.spage=927&rft.isbn=&rft.btitle=&rft.title=Leukemia&rft.issn=08876924&rft_id=info:doi/10.1038%2Fleu.2014.292 LA - English DB - ProQuest Central N1 - Copyright - Copyright Nature Publishing Group Apr 2015 N1 - Last updated - 2015-07-22 DO - http://dx.doi.org/10.1038/leu.2014.292 ER - TY - JOUR T1 - The fertilizing role of African dust in the Amazon rainforest; a first multiyear assessment based on data from cloud-aerosol lidar and infrared pathfinder satellite observations AN - 1703691089; 2015-078644 AB - The productivity of the Amazon rainforest is constrained by the availability of nutrients, in particular phosphorus (P). Deposition of long-range transported African dust is recognized as a potentially important but poorly quantified source of phosphorus. This study provides a first multiyear satellite-based estimate of dust deposition into the Amazon Basin using three-dimensional (3-D) aerosol measurements over 2007-2013 from the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP). The 7 year average of dust deposition into the Amazon Basin is estimated to be 28 (8-48) Tg a (super -1) or 29 (8-50) kg ha (super -1) a (super -1) . The dust deposition shows significant interannual variation that is negatively correlated with the prior-year rainfall in the Sahel. The CALIOP-based multiyear mean estimate of dust deposition matches better with estimates from in situ measurements and model simulations than a previous satellite-based estimate does. The closer agreement benefits from a more realistic geographic definition of the Amazon Basin and inclusion of meridional dust transport calculation in addition to the 3-D nature of CALIOP aerosol measurements. The imported dust could provide about 0.022 (0.006-0.037) Tg P of phosphorus per year, equivalent to 23 (7-39) g P ha (super -1) a (super -1) to fertilize the Amazon rainforest. This out-of-basin phosphorus input is comparable to the hydrological loss of phosphorus from the basin, suggesting an important role of African dust in preventing phosphorus depletion on timescales of decades to centuries. Abstract Copyright (2015), . American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Yu, Hongbin AU - Chin, Mian AU - Yuan, Tianle AU - Bian, Huisheng AU - Remer, Lorraine A AU - Prospero, Joseph M AU - Omar, Ali AU - Winker, David AU - Yang, Yuekui AU - Zhang, Yan AU - Zhang, Zhibo AU - Zhao, Chun Y1 - 2015/03/28/ PY - 2015 DA - 2015 Mar 28 SP - 1984 EP - 1991 PB - American Geophysical Union, Washington, DC VL - 42 IS - 6 SN - 0094-8276, 0094-8276 KW - laser methods KW - geophysical surveys KW - environmental effects KW - infrared methods KW - transport KW - sediments KW - ecology KW - productivity KW - sediment transport KW - clastic sediments KW - geophysical methods KW - satellite methods KW - nutrients KW - provenance KW - South America KW - lidar methods KW - atmospheric transport KW - dust KW - surveys KW - Africa KW - aerosols KW - wind transport KW - Amazon Basin KW - remote sensing KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703691089?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=The+fertilizing+role+of+African+dust+in+the+Amazon+rainforest%3B+a+first+multiyear+assessment+based+on+data+from+cloud-aerosol+lidar+and+infrared+pathfinder+satellite+observations&rft.au=Yu%2C+Hongbin%3BChin%2C+Mian%3BYuan%2C+Tianle%3BBian%2C+Huisheng%3BRemer%2C+Lorraine+A%3BProspero%2C+Joseph+M%3BOmar%2C+Ali%3BWinker%2C+David%3BYang%2C+Yuekui%3BZhang%2C+Yan%3BZhang%2C+Zhibo%3BZhao%2C+Chun&rft.aulast=Yu&rft.aufirst=Hongbin&rft.date=2015-03-28&rft.volume=42&rft.issue=6&rft.spage=1984&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL063040 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 30 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2015-08-13 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - aerosols; Africa; Amazon Basin; atmospheric transport; clastic sediments; dust; ecology; environmental effects; geophysical methods; geophysical surveys; infrared methods; laser methods; lidar methods; nutrients; productivity; provenance; remote sensing; satellite methods; sediment transport; sediments; South America; surveys; transport; wind transport DO - http://dx.doi.org/10.1002/2015GL063040 ER - TY - NEWS T1 - LEAPTech to Demonstrate Electric Propulsion Technologies AN - 1666922220 JF - UPI Space Daily AU - Peter Merlin for Armstrong Flight Research Center Y1 - 2015/03/27/ PY - 2015 DA - 2015 Mar 27 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1666922220?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=LEAPTech+to+Demonstrate+Electric+Propulsion+Technologies&rft.au=Peter+Merlin+for+Armstrong+Flight+Research+Center&rft.aulast=Peter+Merlin+for+Armstrong+Flight+Research+Center&rft.aufirst=&rft.date=2015-03-27&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-03-27 ER - TY - NEWS T1 - Exploring the Depths of Titan's Seas AN - 1664913107 JF - UPI Space Daily AU - Nancy Smith Kilkenny for Glenn Research Center Y1 - 2015/03/21/ PY - 2015 DA - 2015 Mar 21 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1664913107?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=Exploring+the+Depths+of+Titan%27s+Seas&rft.au=Nancy+Smith+Kilkenny+for+Glenn+Research+Center&rft.aulast=Nancy+Smith+Kilkenny+for+Glenn+Research+Center&rft.aufirst=&rft.date=2015-03-21&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-03-23 ER - TY - JOUR T1 - Water in Hawaiian garnet pyroxenites; implications for water heterogeneity in the mantle AN - 1676591047; 2015-039563 AB - Mapping the compositional variability of the Earth's mantle is fundamental for understanding mantle dynamics, crustal recycling and melt generation. The geochemistry of intraplate oceanic basalts in particular points to a heterogeneous convecting mantle, often explained by variable proportions of fertile (pyroxenite, eclogite) and depleted (peridotitic) domains. A key parameter necessary to constrain the Earth's deep processes is water because it influences melting and affects the physical properties of the Earth's mantle. However, there are only a few direct water determinations on samples of the oceanic mantle. Here we report water concentrations by FTIR on garnet pyroxenite xenoliths from Salt Lake Crater vent, Oahu, Hawaii, in order to constrain the role of lithological variability in the distribution of water in the upper oceanic mantle. The clinopyroxenes have 260 to 576 ppm H (sub 2) O and the orthopyroxenes about half these amounts. Curiously, garnets have water concentrations below detection limits ( 160). The discrepancy between the low H (sub 2) O/Ce ratios in the bulk pyroxenites and high H (sub 2) O/Ce in the equilibrium melts is consistent with experimental data that predicts 4 to 5 times higher partition coefficient for Ce than H in these pyroxenes. Therefore, the process of high-pressure crystallization in the oceanic lithosphere will create pyroxene-rich lithologies which are paradoxically, both "wet" (i.e., high H (sub 2) O concentrations) and "dry" (low H (sub 2) O/Ce ratios) compared to the source of their parental melts. Phlogopite is present as a trace phase in these rocks (< 0.4% modal) with relatively minor contribution on the bulk water contents. The coupled high H (sub 2) O, low H (sub 2) O/Ce ratios of the pyroxenites are similar to the inferred source of several Enriched Mantle (EM)-type Ocean Island Basalts (OIB), like the Samoa, Pitcairn, Society, and Kergulen hot spots, as well as the EM-1 type Koolau endmember of the Hawaiian magmas. We suggest that recycling of pyroxenite-bearing oceanic lithosphere can explain the relatively high H (sub 2) O and low H (sub 2) O/Ce ratios of some EM-type OIB. Our data suggests a link between lithological variability and heterogeneous water distribution in the upper mantle. Abstract Copyright (2015) Elsevier, B.V. JF - Chemical Geology AU - Bizimis, Michael AU - Peslier, Anne H Y1 - 2015/03/18/ PY - 2015 DA - 2015 Mar 18 SP - 61 EP - 75 PB - Elsevier, Amsterdam VL - 397 SN - 0009-2541, 0009-2541 KW - silicates KW - garnet group KW - mass spectra KW - electron probe data KW - cerium KW - FTIR spectra KW - plutonic rocks KW - inclusions KW - basalts KW - orthosilicates KW - water content KW - Pacific Plate KW - Honolulu County Hawaii KW - lithosphere KW - East Pacific Ocean Islands KW - convection KW - ultramafics KW - plate tectonics KW - Oceania KW - crystal chemistry KW - crust KW - United States KW - hot spots KW - volcanic rocks KW - igneous rocks KW - oceanic lithosphere KW - mantle KW - melts KW - infrared spectra KW - major elements KW - water-rock interaction KW - spectra KW - rare earths KW - trace elements KW - heterogeneity KW - chemical ratios KW - xenoliths KW - garnet pyroxenite KW - recycling KW - hawaiian-type eruptions KW - silicate melts KW - Oahu KW - Hawaii KW - nesosilicates KW - ICP mass spectra KW - Salt Lake Crater KW - pyroxenite KW - metals KW - magmas KW - mid-ocean ridge basalts KW - Polynesia KW - ocean-island basalts KW - 02C:Geochemistry of rocks, soils, and sediments KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1676591047?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Chemical+Geology&rft.atitle=Water+in+Hawaiian+garnet+pyroxenites%3B+implications+for+water+heterogeneity+in+the+mantle&rft.au=Bizimis%2C+Michael%3BPeslier%2C+Anne+H&rft.aulast=Bizimis&rft.aufirst=Michael&rft.date=2015-03-18&rft.volume=397&rft.issue=&rft.spage=61&rft.isbn=&rft.btitle=&rft.title=Chemical+Geology&rft.issn=00092541&rft_id=info:doi/10.1016%2Fj.chemgeo.2015.01.008 L2 - http://www.sciencedirect.com/science/journal/00092541 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2015-01-01 N1 - Number of references - 167 N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2015-04-30 N1 - CODEN - CHGEAD N1 - SubjectsTermNotLitGenreText - basalts; cerium; chemical ratios; convection; crust; crystal chemistry; East Pacific Ocean Islands; electron probe data; FTIR spectra; garnet group; garnet pyroxenite; Hawaii; hawaiian-type eruptions; heterogeneity; Honolulu County Hawaii; hot spots; ICP mass spectra; igneous rocks; inclusions; infrared spectra; lithosphere; magmas; major elements; mantle; mass spectra; melts; metals; mid-ocean ridge basalts; nesosilicates; Oahu; ocean-island basalts; Oceania; oceanic lithosphere; orthosilicates; Pacific Plate; plate tectonics; plutonic rocks; Polynesia; pyroxenite; rare earths; recycling; Salt Lake Crater; silicate melts; silicates; spectra; trace elements; ultramafics; United States; volcanic rocks; water content; water-rock interaction; xenoliths DO - http://dx.doi.org/10.1016/j.chemgeo.2015.01.008 ER - TY - JOUR T1 - Understanding the signature of rock coatings in laser-induced breakdown spectroscopy data AN - 1689591602; 2015-057186 AB - Surface compositional features on rocks such as coatings and weathering rinds provide important information about past aqueous environments and water-rock interactions. The search for these features represents an important aspect of the Curiosity rover mission. With its unique ability to do fine-scale chemical depth profiling, the ChemCam laser-induced breakdown spectroscopy instrument (LIBS) onboard Curiosity can be used to both identify and analyze rock surface alteration features. In this study we analyze a terrestrial manganese-rich rock varnish coating on a basalt rock in the laboratory with the ChemCam engineering model to determine the LIBS signature of a natural rock coating. Results show that there is a systematic decrease in peak heights for elements such as Mn that are abundant in the coating but not the rock. There is significant spatial variation in the relative abundance of coating elements detected by LIBS depending on where on the rock surface sampled; this is due to the variability in thickness and spatial discontinuities in the coating. Similar trends have been identified in some martian rock targets in ChemCam data, suggesting that these rocks may have coatings or weathering rinds on their surfaces. JF - Icarus AU - Lanza, Nina L AU - Ollila, Ann M AU - Cousin, Agnes AU - Wiens, Roger C AU - Clegg, Samuel AU - Mangold, Nicolas AU - Bridges, Nathan T AU - Cooper, Daniel AU - Schmidt, Mariek AU - Berger, Jeffrey A AU - Arvidson, Raymond AU - Melikechi, Noureddine AU - Newsom, Horton E AU - Tokar, Robert AU - Hardgrove, Craig AU - Mezzacappa, Alissa AU - Jackson, Ryan S AU - Clark, Benton AU - Forni, Olivier AU - Maurice, Sylvestre AU - Nachon, Marion AU - Anderson, Ryan B AU - Blank, Jennifer AU - Deans, Matthew AU - Delapp, Dorothea AU - Leveille, Richard AU - McInroy, Rhonda AU - Martinez, Ronald AU - Meslin, Pierre-Yves AU - Pinet, Patrick Y1 - 2015/03/15/ PY - 2015 DA - 2015 Mar 15 SP - 62 EP - 73 PB - Elsevier, New York, NY VL - 249 SN - 0019-1035, 0019-1035 KW - alteration KW - experimental studies KW - minor elements KW - weathering rinds KW - Mars KW - manganese KW - depth KW - Gale Crater KW - emission spectra KW - terrestrial planets KW - planets KW - laboratory studies KW - spatial variations KW - paleoenvironment KW - water-rock interaction KW - metals KW - rock varnish KW - Curiosity Rover KW - LIBS spectra KW - ChemCam KW - spectra KW - trace elements KW - rocks KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1689591602?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Understanding+the+signature+of+rock+coatings+in+laser-induced+breakdown+spectroscopy+data&rft.au=Lanza%2C+Nina+L%3BOllila%2C+Ann+M%3BCousin%2C+Agnes%3BWiens%2C+Roger+C%3BClegg%2C+Samuel%3BMangold%2C+Nicolas%3BBridges%2C+Nathan+T%3BCooper%2C+Daniel%3BSchmidt%2C+Mariek%3BBerger%2C+Jeffrey+A%3BArvidson%2C+Raymond%3BMelikechi%2C+Noureddine%3BNewsom%2C+Horton+E%3BTokar%2C+Robert%3BHardgrove%2C+Craig%3BMezzacappa%2C+Alissa%3BJackson%2C+Ryan+S%3BClark%2C+Benton%3BForni%2C+Olivier%3BMaurice%2C+Sylvestre%3BNachon%2C+Marion%3BAnderson%2C+Ryan+B%3BBlank%2C+Jennifer%3BDeans%2C+Matthew%3BDelapp%2C+Dorothea%3BLeveille%2C+Richard%3BMcInroy%2C+Rhonda%3BMartinez%2C+Ronald%3BMeslin%2C+Pierre-Yves%3BPinet%2C+Patrick&rft.aulast=Lanza&rft.aufirst=Nina&rft.date=2015-03-15&rft.volume=249&rft.issue=&rft.spage=62&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.05.038 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 44 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2015-06-18 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - alteration; ChemCam; Curiosity Rover; depth; emission spectra; experimental studies; Gale Crater; laboratory studies; LIBS spectra; manganese; Mars; metals; minor elements; paleoenvironment; planets; rock varnish; rocks; spatial variations; spectra; terrestrial planets; trace elements; water-rock interaction; weathering rinds DO - http://dx.doi.org/10.1016/j.icarus.2014.05.038 ER - TY - JOUR T1 - Gale Crater and impact processes; Curiosity's first 364 sols on Mars AN - 1689591496; 2015-057189 AB - Impact processes at all scales have been involved in the formation and subsequent evolution of Gale crater. Small impact craters in the vicinity of the Curiosity MSL landing site and rover traverse during the 364 Sols after landing have been studied both from orbit and the surface. Evidence for the effect of impacts on basement outcrops may include loose blocks of sandstone and conglomerate, and disrupted (fractured) sedimentary layers, which are not obviously displaced by erosion. Impact ejecta blankets are likely to be present, but in the absence of distinct glass or impact melt phases are difficult to distinguish from sedimentary/volcaniclastic breccia and conglomerate deposits. The occurrence of individual blocks with diverse petrological characteristics, including igneous textures, have been identified across the surface of Bradbury Rise, and some of these blocks may represent distal ejecta from larger craters in the vicinity of Gale. Distal ejecta may also occur in the form of impact spherules identified in the sediments and drift material. Possible examples of impactites in the form of shatter cones, shocked rocks, and ropy textured fragments of materials that may have been molten have been observed, but cannot be uniquely confirmed. Modification by aeolian processes of craters smaller than 40 m in diameter observed in this study, are indicated by erosion of crater rims, and infill of craters with aeolian and airfall dust deposits. Estimates for resurfacing suggest that craters less than 15 m in diameter may represent steady state between production and destruction. The smallest candidate impact crater observed is approximately 0.6 m in diameter. The observed crater record and other data are consistent with a resurfacing rate of the order of 10 mm/Myr; considerably greater than the rate from impact cratering alone, but remarkably lower than terrestrial erosion rates. JF - Icarus AU - Newsom, Horton E AU - Mangold, Nicolas AU - Kah, Linda C AU - Williams, Joshua M AU - Arvidson, Ray E AU - Stein, Nathan AU - Ollila, Ann M AU - Bridges, John C AU - Schwenzer, Susanne P AU - King, Penelope L AU - Grant, John A AU - Pinet, Patrick AU - Bridges, Nathan T AU - Calef, Fred, III AU - Wiens, Roger C AU - Spray, John G AU - Vaniman, David T AU - Elston, Wolf E AU - Berger, Jeffrey A AU - Garvin, James B AU - Palucis, Marisa C Y1 - 2015/03/15/ PY - 2015 DA - 2015 Mar 15 SP - 108 EP - 128 PB - Elsevier, New York, NY VL - 249 SN - 0019-1035, 0019-1035 KW - fractured materials KW - cratering KW - impact features KW - igneous rocks KW - resurfacing KW - sandstone KW - Mars KW - erosion rates KW - Gale Crater KW - sedimentary rocks KW - metamorphic rocks KW - Curiosity Rover KW - spherules KW - soils KW - Peace Vallis KW - impactites KW - textures KW - shatter cones KW - impacts KW - ejecta KW - conglomerate KW - terrestrial planets KW - planets KW - cryptoexplosion features KW - impact craters KW - clastic rocks KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1689591496?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Gale+Crater+and+impact+processes%3B+Curiosity%27s+first+364+sols+on+Mars&rft.au=Newsom%2C+Horton+E%3BMangold%2C+Nicolas%3BKah%2C+Linda+C%3BWilliams%2C+Joshua+M%3BArvidson%2C+Ray+E%3BStein%2C+Nathan%3BOllila%2C+Ann+M%3BBridges%2C+John+C%3BSchwenzer%2C+Susanne+P%3BKing%2C+Penelope+L%3BGrant%2C+John+A%3BPinet%2C+Patrick%3BBridges%2C+Nathan+T%3BCalef%2C+Fred%2C+III%3BWiens%2C+Roger+C%3BSpray%2C+John+G%3BVaniman%2C+David+T%3BElston%2C+Wolf+E%3BBerger%2C+Jeffrey+A%3BGarvin%2C+James+B%3BPalucis%2C+Marisa+C&rft.aulast=Newsom&rft.aufirst=Horton&rft.date=2015-03-15&rft.volume=249&rft.issue=&rft.spage=108&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.10.013 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 126 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table, geol. sketch maps N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-10-15 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - clastic rocks; conglomerate; cratering; cryptoexplosion features; Curiosity Rover; ejecta; erosion rates; fractured materials; Gale Crater; igneous rocks; impact craters; impact features; impactites; impacts; Mars; metamorphic rocks; Peace Vallis; planets; resurfacing; sandstone; sedimentary rocks; shatter cones; soils; spherules; terrestrial planets; textures DO - http://dx.doi.org/10.1016/j.icarus.2014.10.013 ER - TY - JOUR T1 - Observational evidence of a suppressed planetary boundary layer in northern Gale Crater, Mars as seen by the Navcam instrument onboard the Mars Science Laboratory rover AN - 1689591228; 2015-057190 AB - The Navigation Cameras (Navcam) of the Mars Science Laboratory rover, Curiosity, have been used to examine two aspects of the planetary boundary layer: vertical dust distribution and dust devil frequency. The vertical distribution of dust may be obtained by using observations of the distant crater rim to derive a line-of-sight optical depth within Gale Crater and comparing this optical depth to column optical depths obtained using Mastcam observations of the solar disc. The line of sight method consistently produces lower extinctions within the crater compared to the bulk atmosphere. This suggests a relatively stable atmosphere in which dust may settle out leaving the air within the crater clearer than air above and explains the correlation in observed column opacity between the floor of Gale Crater and the higher elevation Meridiani Planum. In the case of dust devils, despite an extensive campaign only one optically thick vortex (r = 1.5 + or - 0.5 X 10 (super -3) ) was observed compared to 149 pressure events >0.5 Pa observed in REMS pressure data. Correcting for temporal coverage by REMS and geographic coverage by Navcam still suggests 104 vortices should have been viewable, suggesting that most vortices are dustless. Additionally, the most intense pressure excursions observed on other landing sites (pressure drop >2.5 Pa) are lacking from the observations by the REMS instrument. Taken together, these observations are consistent with pre-landing circulation modeling of the crater showing a suppressed, shallow boundary layer. They are further consistent with geological observations of dust that suggests the northern portion of the crater is a sink for dust in the current era. JF - Icarus AU - Moores, John E AU - Lemmon, Mark T AU - Kahanpaa, Henrik AU - Rafkin, Scot C R AU - Francis, Raymond AU - Pla-Garcia, Jorge AU - Bean, Keri AU - Haberle, Robert AU - Newman, Claire AU - Mischna, Michael AU - Vasavada, Ashwin R AU - de la Torre Juarez, Manuel AU - Renno, Nilton AU - Bell, Jim AU - Calef, Fred AU - Cantor, Bruce AU - McConnochie, Timothy H AU - Harri, Ari-Matti AU - Genzer, Maria AU - Wong, Michael H AU - Smith, Michael E AU - Martin-Torres, F Javier AU - Zorzano, Maria-Paz AU - Kemppinen, Osku AU - McCullough, Emily Y1 - 2015/03/15/ PY - 2015 DA - 2015 Mar 15 SP - 129 EP - 142 PB - Elsevier, New York, NY VL - 249 SN - 0019-1035, 0019-1035 KW - impact features KW - clastic sediments KW - Navcam KW - Mars KW - vorticity KW - frequency KW - distribution KW - dust devils KW - Gale Crater KW - terrestrial planets KW - planets KW - dust KW - Curiosity Rover KW - sediments KW - Mars Science Laboratory KW - impact craters KW - optical depth KW - boundary layer KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1689591228?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Observational+evidence+of+a+suppressed+planetary+boundary+layer+in+northern+Gale+Crater%2C+Mars+as+seen+by+the+Navcam+instrument+onboard+the+Mars+Science+Laboratory+rover&rft.au=Moores%2C+John+E%3BLemmon%2C+Mark+T%3BKahanpaa%2C+Henrik%3BRafkin%2C+Scot+C+R%3BFrancis%2C+Raymond%3BPla-Garcia%2C+Jorge%3BBean%2C+Keri%3BHaberle%2C+Robert%3BNewman%2C+Claire%3BMischna%2C+Michael%3BVasavada%2C+Ashwin+R%3Bde+la+Torre+Juarez%2C+Manuel%3BRenno%2C+Nilton%3BBell%2C+Jim%3BCalef%2C+Fred%3BCantor%2C+Bruce%3BMcConnochie%2C+Timothy+H%3BHarri%2C+Ari-Matti%3BGenzer%2C+Maria%3BWong%2C+Michael+H%3BSmith%2C+Michael+E%3BMartin-Torres%2C+F+Javier%3BZorzano%2C+Maria-Paz%3BKemppinen%2C+Osku%3BMcCullough%2C+Emily&rft.aulast=Moores&rft.aufirst=John&rft.date=2015-03-15&rft.volume=249&rft.issue=&rft.spage=129&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.09.020 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 39 N1 - PubXState - NY N1 - Document feature - illus. N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-08-13 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - boundary layer; clastic sediments; Curiosity Rover; distribution; dust; dust devils; frequency; Gale Crater; impact craters; impact features; Mars; Mars Science Laboratory; Navcam; optical depth; planets; sediments; terrestrial planets; vorticity DO - http://dx.doi.org/10.1016/j.icarus.2014.09.020 ER - TY - JOUR T1 - ChemCam results from the Shaler outcrop in Gale Crater, Mars AN - 1689589778; 2015-057183 AB - The ChemCam campaign at the fluvial sedimentary outcrop 'Shaler' resulted in observations of 28 non-soil targets, 26 of which included active laser induced breakdown spectroscopy (LIBS), and all of which included Remote Micro-Imager (RMI) images. The Shaler outcrop can be divided into seven facies based on grain size, texture, color, resistance to erosion, and sedimentary structures. The ChemCam observations cover Facies 3 through 7. For all targets, the majority of the grains were below the limit of the RMI resolution, but many targets had a portion of resolvable grains coarser than approximately 0.5 mm. The Shaler facies show significant scatter in LIBS spectra and compositions from point to point, but several key compositional trends are apparent, most notably in the average K (sub 2) O content of the observed facies. Facies 3 is lower in K (sub 2) O than the other facies and is similar in composition to the "snake," a clastic dike that occurs lower in the Yellowknife Bay stratigraphic section. Facies 7 is enriched in K (sub 2) O relative to the other facies and shows some compositional and textural similarities to float rocks near Yellowknife Bay. The remaining facies (4, 5, and 6) are similar in composition to the Sheepbed and Gillespie Lake members, although the Shaler facies have slightly elevated K (sub 2) O and FeOT. Several analysis points within Shaler suggest the presence of feldspars, though these points have excess FeOT which suggests the presence of Fe oxide cement or inclusions. The majority of LIBS analyses have compositions which indicate that they are mixtures of pyroxene and feldspar. The Shaler feldspathic compositions are more alkaline than typical feldspars from shergottites, suggesting an alkaline basaltic source region, particularly for the K (sub 2) O-enriched Facies 7. Apart from possible iron-oxide cement, there is little evidence for chemical alteration at Shaler, although calcium-sulfate veins comparable to those observed lower in the stratigraphic section are present. The differing compositions, and inferred provenances at Shaler, suggest compositionally heterogeneous terrain in the Gale crater rim and surroundings, and intermittent periods of deposition. JF - Icarus AU - Anderson, Ryan AU - Bridges, J C AU - Williams, A AU - Edgar, L AU - Ollila, Ann M AU - Williams, J AU - Nachon, Marion AU - Mangold, Nicolas AU - Fisk, M AU - Schieber, J AU - Gupta, S AU - Dromart, G AU - Wiens, Roger C AU - Le Mouelic, S AU - Forni, O AU - Lanza, Nina L AU - Mezzacappa, Alissa AU - Sautter, V AU - Blaney, D AU - Clark, B AU - Clegg, S AU - Gasnault, O AU - Lasue, J AU - Leveille, Richard AU - Lewin, E AU - Lewis, K W AU - Maurice, Sylvestre AU - Newsom, Horton E AU - Schwenzer, Susanne P AU - Vaniman, D Y1 - 2015/03/15/ PY - 2015 DA - 2015 Mar 15 SP - 2 EP - 21 PB - Elsevier, New York, NY VL - 249 SN - 0019-1035, 0019-1035 KW - silicates KW - alteration KW - imagery KW - iron oxides KW - erosion KW - Mars KW - iron KW - Gale Crater KW - emission spectra KW - pyroxene group KW - Shaler outcrop KW - stratigraphic units KW - oxides KW - LIBS spectra KW - ChemCam KW - framework silicates KW - spectra KW - cement KW - chemical composition KW - sedimentary structures KW - cross-bedding KW - chain silicates KW - Yellowknife Bay KW - chemical weathering KW - textures KW - grain size KW - alkali metals KW - weathering KW - Sheepbed Member Formation KW - terrestrial planets KW - planets KW - planar bedding structures KW - metals KW - potassium KW - fluvial environment KW - feldspar group KW - facies KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1689589778?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=ChemCam+results+from+the+Shaler+outcrop+in+Gale+Crater%2C+Mars&rft.au=Anderson%2C+Ryan%3BBridges%2C+J+C%3BWilliams%2C+A%3BEdgar%2C+L%3BOllila%2C+Ann+M%3BWilliams%2C+J%3BNachon%2C+Marion%3BMangold%2C+Nicolas%3BFisk%2C+M%3BSchieber%2C+J%3BGupta%2C+S%3BDromart%2C+G%3BWiens%2C+Roger+C%3BLe+Mouelic%2C+S%3BForni%2C+O%3BLanza%2C+Nina+L%3BMezzacappa%2C+Alissa%3BSautter%2C+V%3BBlaney%2C+D%3BClark%2C+B%3BClegg%2C+S%3BGasnault%2C+O%3BLasue%2C+J%3BLeveille%2C+Richard%3BLewin%2C+E%3BLewis%2C+K+W%3BMaurice%2C+Sylvestre%3BNewsom%2C+Horton+E%3BSchwenzer%2C+Susanne+P%3BVaniman%2C+D&rft.aulast=Anderson&rft.aufirst=Ryan&rft.date=2015-03-15&rft.volume=249&rft.issue=&rft.spage=2&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.07.025 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 49 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2015-06-18 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - alkali metals; alteration; cement; chain silicates; ChemCam; chemical composition; chemical weathering; cross-bedding; emission spectra; erosion; facies; feldspar group; fluvial environment; framework silicates; Gale Crater; grain size; imagery; iron; iron oxides; LIBS spectra; Mars; metals; oxides; planar bedding structures; planets; potassium; pyroxene group; sedimentary structures; Shaler outcrop; Sheepbed Member Formation; silicates; spectra; stratigraphic units; terrestrial planets; textures; weathering; Yellowknife Bay DO - http://dx.doi.org/10.1016/j.icarus.2014.07.025 ER - TY - NEWS T1 - Orion's Launch Abort System Motor Exceeds Expectations AN - 1662481919 JF - UPI Space Daily AU - Sasha Congiu for Langley Research Center Y1 - 2015/03/12/ PY - 2015 DA - 2015 Mar 12 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1662481919?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=Orion%27s+Launch+Abort+System+Motor+Exceeds+Expectations&rft.au=Sasha+Congiu+for+Langley+Research+Center&rft.aulast=Sasha+Congiu+for+Langley+Research+Center&rft.aufirst=&rft.date=2015-03-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-03-12 ER - TY - NEWS T1 - Subtracting Gravity from Alzheimer's AN - 1661857140 JF - UPI Space Daily AU - Rachel Molina for NASA Science News Y1 - 2015/03/11/ PY - 2015 DA - 2015 Mar 11 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1661857140?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=Subtracting+Gravity+from+Alzheimer%27s&rft.au=Rachel+Molina+for+NASA+Science+News&rft.aulast=Rachel+Molina+for+NASA+Science+News&rft.aufirst=&rft.date=2015-03-11&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-03-11 ER - TY - JOUR T1 - THE PSEUDO-ZODI PROBLEM FOR EDGE-ON PLANETARY SYSTEMS AN - 1727694121; PQ0002187253 AB - Future direct observations of extrasolar Earth-sized planets in the habitable zone (HZ) could be hampered by a worrisome source of noise, starlight-reflecting exozodiacal dust. Mid-infrared surveys are currently underway to constrain the amount of exozodiacal dust in the HZs around nearby stars. However, at visible wavelengths another source of dust, invisible to these surveys, may dominate over exozodiacal dust. For systems observed near edge-on, a cloud of dust with face-on optical depth 10 super(-7) beyond ~5 AU can mimic the surface brightness of a cloud of exozodiacal dust with equal optical depth if the dust grains are sufficiently forward-scattering. We posit that dust migrating inward from cold debris belts via Poynting-Robertson drag could produce this "pseudo-zodiacal" effect, potentially making it ~50% as common as exozodiacal clouds. We place constraints on the disk radii and scattering phase function required to produce the effect. JF - Astrophysical Journal AU - Stark, Christopher C AU - Kuchner, Marc J AU - Lincowski, Andrew AD - NASA Goddard Space Flight Center, Exoplanets & Stellar Astrophysics Laboratory, Code 667, Greenbelt, MD 20771, USA, christopher.c.stark@nasa.gov PY - 2015 SP - 1 EP - 7 PB - IOP Publishing, The Public Ledger Building, Suite 929 Philadelphia PA 19106 United States VL - 801 IS - 2 SN - 0004-637X, 0004-637X KW - Pollution Abstracts; Meteorological & Geoastrophysical Abstracts KW - circumstellar matter KW - planetary systems KW - Optical analysis KW - Clouds KW - Stellar planets KW - Acoustic waves KW - Stellar investigations KW - Noise pollution KW - Grains KW - Interstellar clouds KW - Dust KW - Drag KW - P 0000:AIR POLLUTION KW - M2 523.4:Planets (523.4) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1727694121?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Astrophysical+Journal&rft.atitle=THE+PSEUDO-ZODI+PROBLEM+FOR+EDGE-ON+PLANETARY+SYSTEMS&rft.au=Stark%2C+Christopher+C%3BKuchner%2C+Marc+J%3BLincowski%2C+Andrew&rft.aulast=Stark&rft.aufirst=Christopher&rft.date=2015-03-01&rft.volume=801&rft.issue=2&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Astrophysical+Journal&rft.issn=0004637X&rft_id=info:doi/10.1088%2F0004-637X%2F801%2F2%2F128 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-10-01 N1 - Last updated - 2015-12-23 N1 - SubjectsTermNotLitGenreText - Clouds; Stellar planets; Acoustic waves; Stellar investigations; Noise pollution; Interstellar clouds; Drag; Optical analysis; Grains; Dust DO - http://dx.doi.org/10.1088/0004-637X/801/2/128 ER - TY - JOUR T1 - EVIDENCE BASED MEDICINE IN SPACE FLIGHT: EVALUATION OF INFLIGHT VISION DATA FOR OPERATIONAL DECISION-MAKING AN - 1701503084; PQ0001669215 AB - INTRODUCTION: Due to vision changes associated with space flight, JSC Space and Clinical Operations (SCO) implemented broad mission-related vision testing starting in 2009. Optical Coherence Tomography (OCT), 3 Tesla Brain and Orbit MRIs, and Optical Biometry were implemented terrestrially for clinical monitoring. While no inflight vision testing was in place, already available on-orbit technology was leveraged to facilitate in-flight clinical monitoring, including visual acuity, Amsler grid, tonometry, and ultrasonography. In 2013, on-orbit testing capabilities were expanded to include contrast sensitivity testing and OCT. As these additional testing capabilities have been added, resource prioritization, particularly crew time, is under evaluation. METHODS: We used descriptive statistics to assess the clinical value of tonometry and contrast testing, which occurs preflight and on flight days 30, 90, 30 days prior to landing, and post-flight. We compared intraocular pressure (IOP, mmHg) and threshold contrast (%) to clinical normal ranges. We also compared absolute and change in IOP and threshold contrast measures to clinical outcomes-refractive error change, anatomical changes, and disc edema. RESULTS: In ISS crewmembers, IOP and threshold contrast on orbit are within normal clinical ranges. Visualizations of trends in IOP and threshold contrast measures do not reveal any obvious relationships with vision outcomes, but formal statistical analyses will be conducted. DISCUSSION: SCO has discontinued routine in-flight tonometry and contrast testing as part of the medical requirement, effective with Expedition 40, although these capabilities will continue to be available as needed for clinical care. Future evaluation of routine on-orbit ultrasound, OCT, and fundoscopy testing is planned in order to maximize medical resources and crew time. JF - Aerospace Medicine and Human Performance AU - Van Baalen, M AU - Mason, S AU - Foy, M AU - Wear, M AU - Taiym, W AU - Moynihan, S AU - Alexander, D AU - Hart, S AU - Tarver, W AD - NASA, Houston, TX Y1 - 2015/03// PY - 2015 DA - Mar 2015 SP - 272 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 86 IS - 3 SN - 2375-6314, 2375-6314 KW - Health & Safety Science Abstracts KW - Sensitivity KW - Vision KW - Brain KW - Edema KW - Human factors KW - Expeditions KW - Technology KW - H 6000:Natural Disasters/Civil Defense/Emergency Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1701503084?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ahealthsafetyabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Aerospace+Medicine+and+Human+Performance&rft.atitle=EVIDENCE+BASED+MEDICINE+IN+SPACE+FLIGHT%3A+EVALUATION+OF+INFLIGHT+VISION+DATA+FOR+OPERATIONAL+DECISION-MAKING&rft.au=Van+Baalen%2C+M%3BMason%2C+S%3BFoy%2C+M%3BWear%2C+M%3BTaiym%2C+W%3BMoynihan%2C+S%3BAlexander%2C+D%3BHart%2C+S%3BTarver%2C+W&rft.aulast=Van+Baalen&rft.aufirst=M&rft.date=2015-03-01&rft.volume=86&rft.issue=3&rft.spage=272&rft.isbn=&rft.btitle=&rft.title=Aerospace+Medicine+and+Human+Performance&rft.issn=23756314&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Last updated - 2015-09-03 N1 - SubjectsTermNotLitGenreText - Sensitivity; Vision; Brain; Edema; Human factors; Technology; Expeditions ER - TY - JOUR T1 - LONG-TERM, AMBULATORY MONITORING OF INTRACRANIAL PRESSURE IN ASTRONAUTS USING IMPLANTABLE PROBES - UNDERSTANDING THE IMPACT OF INTRACRANIAL PRESSURE IN THE VISUAL IMPAIRMENT/INTRACRANIAL PRESSURE SYNDROME AN - 1701494791; PQ0001669210 AB - Determining in-flight intracranial pressure (ICP) dynamics is essential for understanding the etiology of the visual impairment/intracranial pressure (VIIP) syndrome. An evaluation was conducted, including review of published data and consultation with the neurosurgical groups with the most experience with this technology. Discussions were held with the VIIP advisory neurosurgeons, the NASA operational and clinical communities, representatives of the astronaut office, and NASA management. Modeling based on NASCAR data was performed to evaluate risk of probe movement during impact loads of a Soyuz landing. Hundreds of patients have been implanted with the telemetric ICP probes in Europe, providing long-term outpatient ambulatory monitoring. The main risks reported include subclinical peri-probe edema (46.9%), localized peri-probe bleeding (0-15.6%), perioperative seizure (0-3.2%), and cellulitis (1.1%). These risks appear to be far greater in patients with neurological disease vs. those without. Modeling shows that probe movement during a Soyuz landing would be 0.2 mm or less, considered clinically insignificant. JF - Aerospace Medicine and Human Performance AU - Barr, Y R AU - Otto, C AU - Brady, R AD - University of Texas Medical Branch/NASA Bioastronautics Contract, Houston, TX PY - 2015 SP - 271 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 86 IS - 3 SN - 2375-6314, 2375-6314 KW - Risk Abstracts; Health & Safety Science Abstracts KW - Etiology KW - ANE, Europe KW - Reviews KW - Edema KW - Human factors KW - Technology KW - H 6000:Natural Disasters/Civil Defense/Emergency Management KW - R2 23010:General: Models, forecasting UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1701494791?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ariskabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Aerospace+Medicine+and+Human+Performance&rft.atitle=LONG-TERM%2C+AMBULATORY+MONITORING+OF+INTRACRANIAL+PRESSURE+IN+ASTRONAUTS+USING+IMPLANTABLE+PROBES+-+UNDERSTANDING+THE+IMPACT+OF+INTRACRANIAL+PRESSURE+IN+THE+VISUAL+IMPAIRMENT%2FINTRACRANIAL+PRESSURE+SYNDROME&rft.au=Barr%2C+Y+R%3BOtto%2C+C%3BBrady%2C+R&rft.aulast=Barr&rft.aufirst=Y&rft.date=2015-03-01&rft.volume=86&rft.issue=3&rft.spage=271&rft.isbn=&rft.btitle=&rft.title=Aerospace+Medicine+and+Human+Performance&rft.issn=23756314&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Last updated - 2015-12-23 N1 - SubjectsTermNotLitGenreText - Etiology; Reviews; Edema; Human factors; Technology; ANE, Europe ER - TY - JOUR T1 - OVERVIEW OF THE FIRST TRANSPORT ROTORCRAFT AIRFRAME CRASH TESTBAD (TRACT) FULL SCALE CRASH TEST AN - 1701489744; PQ0001669334 AB - The principal focus areas for the rotorcraft crashworthiness research task at NASA Langley Research Center are crash modeling and simulation to improve predictive capabilities for structural impact, evaluation of crashworthy concepts, including active restraints, energy absorbing seats and composite subfloor, and development of advanced anthropomorphic test device models for aerospace crashworthiness. A CH-46E, categorized as a medium-lift rotorcraft with fuselage dimensions comparable to a regional jet or business jet, was outfitted with various crashworthy features such as pre-tensioning active restraints and energy absorbing seats. The first TRACT test (TRACT 1), conducted in August 2013, assessed improvements to occupant loads and flail envelope with crashworthy features, provided data for comparison to finite element analyses, and demonstrated novel techniques for photogrammetric data acquisition to measure occupant and airframe kinematics. Loads from ATDs in energy absorbing seats and restraints were within injury limits. Severe injury was likely for ATDs in forward facing passenger seats, legacy troop bench seats, and a three-tiered patient litter. JF - Aerospace Medicine and Human Performance AU - Annett, M AD - NASA Langley Research Center, Hampton, VA Y1 - 2015/03// PY - 2015 DA - March 2015 SP - 312 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 86 IS - 3 SN - 2375-6314, 2375-6314 KW - Health & Safety Science Abstracts KW - Finite element method KW - Litter KW - Injuries KW - Energy KW - Simulation KW - Human factors KW - Crashworthiness KW - H 2000:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1701489744?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ahealthsafetyabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Aerospace+Medicine+and+Human+Performance&rft.atitle=OVERVIEW+OF+THE+FIRST+TRANSPORT+ROTORCRAFT+AIRFRAME+CRASH+TESTBAD+%28TRACT%29+FULL+SCALE+CRASH+TEST&rft.au=Annett%2C+M&rft.aulast=Annett&rft.aufirst=M&rft.date=2015-03-01&rft.volume=86&rft.issue=3&rft.spage=312&rft.isbn=&rft.btitle=&rft.title=Aerospace+Medicine+and+Human+Performance&rft.issn=23756314&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Finite element method; Litter; Injuries; Energy; Simulation; Human factors; Crashworthiness ER - TY - JOUR T1 - VISUAL IMPAIRMENT/INTRACRANIAL PRESSURE (VHP) RISK CLINICAL CARE DATA TOOLS AN - 1701488173; PQ0001669213 AB - Prior to 2010, several ISS crewmembers returned from spaceflight with changes to their vision, ranging from a mild hyperopic shift to frank disc edema. In March 2014, driven in part by a more comprehensive understanding of the imaging data and increased imaging capability on orbit, SCO revised their clinical care guidance to outline in-flight care and increase post-flight follow-up. The new clinical guidance does not include a classification scheme. To support clinical care post-flight for each ISS crewmember, Lifetime Surveillance of Astronaut Health (LSAH) coordinates a meeting with JSC Clinic and NASA Flight Surgeons approximately 30 days prior to landing to review the crewmember's individual vision data and imagery. A chart review is conducted to determine the crewmember's post-mission VIIP status based on changes observed from preflight to inflight test results and to ensure a smooth transition from flight to ground for clinical care. The data tools that have been developed to facilitate these chart reviews will be described. JF - Aerospace Medicine and Human Performance AU - Van Baalen, M AU - Mason, S AU - Taiym, W AU - Wear, M AU - Moynihan, S AU - Alexander, D AU - Hart, S AU - Tarver, W AD - NASA, Houston, TX Y1 - 2015/03// PY - 2015 DA - Mar 2015 SP - 271 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 86 IS - 3 SN - 2375-6314, 2375-6314 KW - Risk Abstracts; Health & Safety Science Abstracts KW - Classification KW - Reviews KW - Edema KW - Human factors KW - Medical personnel KW - H 6000:Natural Disasters/Civil Defense/Emergency Management KW - R2 23010:General: Models, forecasting UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1701488173?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ariskabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Aerospace+Medicine+and+Human+Performance&rft.atitle=VISUAL+IMPAIRMENT%2FINTRACRANIAL+PRESSURE+%28VHP%29+RISK+CLINICAL+CARE+DATA+TOOLS&rft.au=Van+Baalen%2C+M%3BMason%2C+S%3BTaiym%2C+W%3BWear%2C+M%3BMoynihan%2C+S%3BAlexander%2C+D%3BHart%2C+S%3BTarver%2C+W&rft.aulast=Van+Baalen&rft.aufirst=M&rft.date=2015-03-01&rft.volume=86&rft.issue=3&rft.spage=271&rft.isbn=&rft.btitle=&rft.title=Aerospace+Medicine+and+Human+Performance&rft.issn=23756314&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Last updated - 2015-09-03 N1 - SubjectsTermNotLitGenreText - Classification; Reviews; Edema; Human factors; Medical personnel ER - TY - JOUR T1 - CHALLENGES ENCOUNTERED USING OPHTHALMIC ANESTHETICS IN SPACE MEDICINE AN - 1701487493; PQ0001668896 AB - We will discuss the challenges encountered flying and using these anesthetics on the International Space Station. The NASA Johnson Space Center Pharmacy Team researched the stability of the proparacaine under room temperature conditions. A comparison between proparacaine and tetracaine was provided to the operational flight surgeons, who approved tetracaine for use in microgravity. Tetracaine began flying in crewmembers' individual medical accessory kits before it was permanently incorporated into the standard medical kit. Tetracaine was used on five crewmembers as a topical anesthetic for tonometry testing during this timeframe. Two of the five crewmembers experienced corneal flushing and scleral injection, which interfered with interpretation of on-orbit surveillance testing results. Corneal flushing and scleral injection have not been noted with use of proparacaine. These findings required a switch back to proparacaine, necessitating a new process to be developed to supply the medication refrigerated. JF - Aerospace Medicine and Human Performance AU - Bayuse, T M AU - Law, J AU - Alexander, D AU - Moynihan, S AU - LeBlanc, C AU - Langford, K AU - Magalhaes, L AD - Wyle Integrated Science and Engineering, Houston, TX; NASA Johnson Space Center, Houston, TX Y1 - 2015/03// PY - 2015 DA - Mar 2015 SP - 162 EP - 163 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 86 IS - 3 SN - 2375-6314, 2375-6314 KW - Health & Safety Science Abstracts KW - Temperature KW - Human factors KW - Drugs KW - Medical personnel KW - H 6000:Natural Disasters/Civil Defense/Emergency Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1701487493?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ahealthsafetyabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Aerospace+Medicine+and+Human+Performance&rft.atitle=CHALLENGES+ENCOUNTERED+USING+OPHTHALMIC+ANESTHETICS+IN+SPACE+MEDICINE&rft.au=Bayuse%2C+T+M%3BLaw%2C+J%3BAlexander%2C+D%3BMoynihan%2C+S%3BLeBlanc%2C+C%3BLangford%2C+K%3BMagalhaes%2C+L&rft.aulast=Bayuse&rft.aufirst=T&rft.date=2015-03-01&rft.volume=86&rft.issue=3&rft.spage=162&rft.isbn=&rft.btitle=&rft.title=Aerospace+Medicine+and+Human+Performance&rft.issn=23756314&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Last updated - 2015-09-03 N1 - SubjectsTermNotLitGenreText - Temperature; Human factors; Drugs; Medical personnel ER - TY - JOUR T1 - PLANNING FOR INTERNATIONAL HUMAN RESEARCH ON THE INTERNATIONAL SPACE STATION (ISS) AN - 1701483863; PQ0001669268 AB - Effective use of unique ISS capabilities requires coordinated multinational biomedical research. The five ISS partners chartered Multilateral Human Research Panel for Exploration (MHRPE) for this purpose. As a demonstration, in 2011 MHRPE asked NASA's Human Research Program (HRP) and the Institute of Biomedical Problems (IBMP) of the Russian Academy of Science to develop a joint program for the 2015 one-year ISS mission (1YM). The joint in-flight investigation, "Fluid Shifts," uses extensive NASA instrumentation during lower body negative pressure (LBNP) to test the role of fluid redistribution in weightlessness in the visual impairment reported by ISS astronauts. It comprises 3 tests: in Sit-to-Stand, the astronaut stands quickly for 10 seconds; in Recovery from Fall/Stand Test, the astronaut, after 2 minutes prone, stands up as quickly as possible and remains standing for 3[1/2] minutes; and in Tandem Walk, the astronaut walks heel-to-toe along a measured linear course with eyes closed. JF - Aerospace Medicine and Human Performance AU - Charles, J B AD - Human Research Program, NASA Johnson Space Center, Houston, TX Y1 - 2015/03// PY - 2015 DA - Mar 2015 SP - 290 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 86 IS - 3 SN - 2375-6314, 2375-6314 KW - Health & Safety Science Abstracts KW - Human factors KW - Research programs KW - H 6000:Natural Disasters/Civil Defense/Emergency Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1701483863?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ahealthsafetyabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Aerospace+Medicine+and+Human+Performance&rft.atitle=PLANNING+FOR+INTERNATIONAL+HUMAN+RESEARCH+ON+THE+INTERNATIONAL+SPACE+STATION+%28ISS%29&rft.au=Charles%2C+J+B&rft.aulast=Charles&rft.aufirst=J&rft.date=2015-03-01&rft.volume=86&rft.issue=3&rft.spage=290&rft.isbn=&rft.btitle=&rft.title=Aerospace+Medicine+and+Human+Performance&rft.issn=23756314&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Last updated - 2015-09-03 N1 - SubjectsTermNotLitGenreText - Human factors; Research programs ER - TY - JOUR T1 - Context of ancient aqueous environments on Mars from in situ geologic mapping at Endeavour Crater AN - 1700098531; 2015-073239 AB - Using the Mars Exploration Rover Opportunity, we have compiled one of the first field geologic maps on Mars while traversing the Noachian terrain along the rim of the 22 km diameter Endeavour Crater (Latitude -2 degrees 16'33", Longitude -5 degrees 10'51"). In situ mapping of the petrographic, elemental, structural, and stratigraphic characteristics of outcrops and rocks distinguishes four mappable bedrock lithologic units. Three of these rock units predate the surrounding Burns formation sulfate-rich sandstones and one, the Matijevic Formation, represents conditions on early Mars predating the formation of Endeavour Crater. The stratigraphy assembled from these observations includes several geologic unconformities. The differences in lithologic units across these unconformities record changes in the character and intensity of the Martian aqueous environment over geologic time. Water circulated through fractures in the oldest rocks over periods long enough that texturally and elementally significant alteration occurred in fracture walls. These oldest pre-Endeavour rocks and their network of mineralized and altered fractures were preserved by burial beneath impact ejecta and were subsequently exhumed and exposed. The alteration along joints in the oldest rocks and the mineralized veins and concentrations of trace metals in overlying lithologic units is direct evidence that copious volumes of mineralized and/or hydrothermal fluids circulated through the early Martian crust. The wide range in intensity of structural and chemical modification from outcrop to outcrop along the crater rim shows that the ejecta of large (>8 km in diameter) impact craters is complex. These results imply that geologic complexity is to be anticipated in other areas of Mars where cratering has been a fundamental process in the local and regional geology and mineralogy. Abstract Copyright (2015), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Crumpler, Larry S AU - Arvidson, R E AU - Bell, J AU - Clark, B C AU - Cohen, B A AU - Farrand, W H AU - Gellert, R AU - Golombek, M AU - Grant, J A AU - Guinness, E AU - Herkenhoff, K E AU - Johnson, J R AU - Jolliff, B AU - Ming, D W AU - Mittlefehldt, David W AU - Parker, T AU - Rice, J W, Jr AU - Squyres, S W AU - Sullivan, R AU - Yen, A S Y1 - 2015/03// PY - 2015 DA - March 2015 SP - 538 EP - 569 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 120 IS - 3 SN - 2169-9097, 2169-9097 KW - bedrock KW - Noachian KW - impact features KW - Opportunity Rover KW - Mars KW - mapping KW - ejecta KW - terrestrial planets KW - Mars Exploration Rover KW - planets KW - impact craters KW - aquatic environment KW - crust KW - Endeavour Crater KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700098531?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Planets&rft.atitle=Context+of+ancient+aqueous+environments+on+Mars+from+in+situ+geologic+mapping+at+Endeavour+Crater&rft.au=Crumpler%2C+Larry+S%3BArvidson%2C+R+E%3BBell%2C+J%3BClark%2C+B+C%3BCohen%2C+B+A%3BFarrand%2C+W+H%3BGellert%2C+R%3BGolombek%2C+M%3BGrant%2C+J+A%3BGuinness%2C+E%3BHerkenhoff%2C+K+E%3BJohnson%2C+J+R%3BJolliff%2C+B%3BMing%2C+D+W%3BMittlefehldt%2C+David+W%3BParker%2C+T%3BRice%2C+J+W%2C+Jr%3BSquyres%2C+S+W%3BSullivan%2C+R%3BYen%2C+A+S&rft.aulast=Crumpler&rft.aufirst=Larry&rft.date=2015-03-01&rft.volume=120&rft.issue=3&rft.spage=538&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2F2014JE004699 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9100 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 56 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2015-07-30 N1 - SubjectsTermNotLitGenreText - aquatic environment; bedrock; crust; ejecta; Endeavour Crater; impact craters; impact features; mapping; Mars; Mars Exploration Rover; Noachian; Opportunity Rover; planets; terrestrial planets DO - http://dx.doi.org/10.1002/2014JE004699 ER - TY - JOUR T1 - Organic molecules in the Sheepbed Mudstone, Gale Crater, Mars AN - 1700098529; 2015-073237 AB - The Sample Analysis at Mars (SAM) instrument on board the Mars Science Laboratory Curiosity rover is designed to conduct inorganic and organic chemical analyses of the atmosphere and the surface regolith and rocks to help evaluate the past and present habitability potential of Mars at Gale Crater. Central to this task is the development of an inventory of any organic molecules present to elucidate processes associated with their origin, diagenesis, concentration, and long-term preservation. This will guide the future search for biosignatures. Here we report the definitive identification of chlorobenzene (150-300 parts per billion by weight (ppbw)) and C (sub 2) to C (sub 4) dichloroalkanes (up to 70 ppbw) with the SAM gas chromatograph mass spectrometer (GCMS) and detection of chlorobenzene in the direct evolved gas analysis (EGA) mode, in multiple portions of the fines from the Cumberland drill hole in the Sheepbed mudstone at Yellowknife Bay. When combined with GCMS and EGA data from multiple scooped and drilled samples, blank runs, and supporting laboratory analog studies, the elevated levels of chlorobenzene and the dichloroalkanes cannot be solely explained by instrument background sources known to be present in SAM. We conclude that these chlorinated hydrocarbons are the reaction products of Martian chlorine and organic carbon derived from Martian sources (e.g., igneous, hydrothermal, atmospheric, or biological) or exogenous sources such as meteorites, comets, or interplanetary dust particles. Abstract Copyright (2015), . The Authors. JF - Journal of Geophysical Research: Planets AU - Freissinet, Caroline AU - Glavin, D P AU - Mahaffy, Paul R AU - Miller, K E AU - Eigenbrode, J L AU - Summons, R E AU - Brunner, A E AU - Buch, A AU - Szopa, C AU - Archer, P D, Jr AU - Franz, H B AU - Atreya, S K AU - Brinckerhoff, W B AU - Cabane, M AU - Coll, P AU - Conrad, P G AU - Des Marais, D J AU - Dworkin, J P AU - Fairen, A G AU - Francois, P AU - Grotzinger, J P AU - Kashyap, S AU - Kate, I L AU - Leshin, L A AU - Malespin, C A AU - Martin, M G AU - Martin-Torres, F J AU - McAdam, A C AU - Ming, D W AU - Navarro-Gonzalez, R AU - Pavlov, A A AU - Prats, B D AU - Squyres, S W AU - Steele, A AU - Stern, J C AU - Sumner, D Y AU - Sutter, B AU - Zorzano, M P Y1 - 2015/03// PY - 2015 DA - March 2015 SP - 495 EP - 514 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 120 IS - 3 SN - 2169-9097, 2169-9097 KW - Yellowknife Bay KW - chlorinated hydrocarbons KW - chlorobenzene KW - mudstone KW - aliphatic hydrocarbons KW - Mars KW - alkanes KW - oxychlorine KW - Sheepbed Mudstone KW - Gale Crater KW - terrestrial planets KW - provenance KW - planets KW - organic compounds KW - sedimentary rocks KW - Curiosity Rover KW - hydrocarbons KW - halogenated hydrocarbons KW - clastic rocks KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700098529?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Planets&rft.atitle=Organic+molecules+in+the+Sheepbed+Mudstone%2C+Gale+Crater%2C+Mars&rft.au=Freissinet%2C+Caroline%3BGlavin%2C+D+P%3BMahaffy%2C+Paul+R%3BMiller%2C+K+E%3BEigenbrode%2C+J+L%3BSummons%2C+R+E%3BBrunner%2C+A+E%3BBuch%2C+A%3BSzopa%2C+C%3BArcher%2C+P+D%2C+Jr%3BFranz%2C+H+B%3BAtreya%2C+S+K%3BBrinckerhoff%2C+W+B%3BCabane%2C+M%3BColl%2C+P%3BConrad%2C+P+G%3BDes+Marais%2C+D+J%3BDworkin%2C+J+P%3BFairen%2C+A+G%3BFrancois%2C+P%3BGrotzinger%2C+J+P%3BKashyap%2C+S%3BKate%2C+I+L%3BLeshin%2C+L+A%3BMalespin%2C+C+A%3BMartin%2C+M+G%3BMartin-Torres%2C+F+J%3BMcAdam%2C+A+C%3BMing%2C+D+W%3BNavarro-Gonzalez%2C+R%3BPavlov%2C+A+A%3BPrats%2C+B+D%3BSquyres%2C+S+W%3BSteele%2C+A%3BStern%2C+J+C%3BSumner%2C+D+Y%3BSutter%2C+B%3BZorzano%2C+M+P&rft.aulast=Freissinet&rft.aufirst=Caroline&rft.date=2015-03-01&rft.volume=120&rft.issue=3&rft.spage=495&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2F2014JE004737 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9100 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 35 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2015-11-19 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; chlorinated hydrocarbons; chlorobenzene; clastic rocks; Curiosity Rover; Gale Crater; halogenated hydrocarbons; hydrocarbons; Mars; mudstone; organic compounds; oxychlorine; planets; provenance; sedimentary rocks; Sheepbed Mudstone; terrestrial planets; Yellowknife Bay DO - http://dx.doi.org/10.1002/2014JE004737 ER - TY - JOUR T1 - Mars Reconnaissance Orbiter and Opportunity observations of the Burns Formation; crater hopping at Meridiani Planum AN - 1700097796; 2015-073234 AB - Compact Reconnaissance Imaging Spectrometer for Mars hyperspectral (1.0-2.65 mu m) along-track oversampled observations covering Victoria, Santa Maria, Endeavour, and Ada craters were processed to 6 m/pixel and used in combination with Opportunity observations to detect and map hydrated Mg and Ca sulfate minerals in the Burns formation. The strongest spectral absorption features were found to be associated with outcrops that are relatively young and fresh (Ada) or preferentially scoured of dust, soil, and coatings by prevailing winds. At Victoria and Santa Maria, the scoured areas are on the southeastern rims and walls, opposite to the sides where wind-blown sands extend out of the craters. At Endeavour, the deepest absorptions are in Botany Bay, a subdued and buried rim segment that exhibits high thermal inertias, extensive outcrops, and is interpreted to be a region of enhanced wind scour extending up and out of the crater. Ada, Victoria, and Santa Maria outcrops expose the upper portion of the preserved Burns formation and show spectral evidence for the presence of kieserite. In contrast, gypsum is pervasive spectrally in the Botany Bay exposures. Gypsum, a relatively insoluble evaporative mineral, is interpreted to have formed close to the contact with the Noachian crust as rising groundwaters brought brines close to and onto the surface, either as a direct precipitate or during later diagenesis. The presence of kieserite at the top of the section is hypothesized to reflect precipitation from evaporatively concentrated brines or dehydration of polyhydrated sulfates, in both scenarios as the aqueous environment evolved to very arid conditions. Abstract Copyright (2015), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Arvidson, R E AU - Bell, J F, III AU - Catalano, J G AU - Clark, B C AU - Fox, V K AU - Gellert, R AU - Grotzinger, J P AU - Guinness, E A AU - Herkenhoff, K E AU - Knoll, A H AU - Lapotre, M G A AU - McLennan, S M AU - Ming, D W AU - Morris, R V AU - Murchie, S L AU - Powell, K E AU - Smith, M D AU - Squyres, S W AU - Wolff, M J AU - Wray, J J Y1 - 2015/03// PY - 2015 DA - March 2015 SP - 429 EP - 451 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 120 IS - 3 SN - 2169-9097, 2169-9097 KW - Noachian KW - impact features KW - Mars KW - observations KW - Mars Exploration Rover KW - sedimentary rocks KW - Victoria Crater KW - gypsum KW - Ada Crater KW - Meridiani Planum KW - chemically precipitated rocks KW - Burns Formation KW - sulfates KW - Opportunity Rover KW - Botany Bay KW - Mars Reconnaissance Orbiter KW - evaporites KW - Santa Maria Crater KW - terrestrial planets KW - planets KW - diagenesis KW - kieserite KW - brines KW - impact craters KW - aquatic environment KW - Endeavour Crater KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700097796?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Planets&rft.atitle=Mars+Reconnaissance+Orbiter+and+Opportunity+observations+of+the+Burns+Formation%3B+crater+hopping+at+Meridiani+Planum&rft.au=Arvidson%2C+R+E%3BBell%2C+J+F%2C+III%3BCatalano%2C+J+G%3BClark%2C+B+C%3BFox%2C+V+K%3BGellert%2C+R%3BGrotzinger%2C+J+P%3BGuinness%2C+E+A%3BHerkenhoff%2C+K+E%3BKnoll%2C+A+H%3BLapotre%2C+M+G+A%3BMcLennan%2C+S+M%3BMing%2C+D+W%3BMorris%2C+R+V%3BMurchie%2C+S+L%3BPowell%2C+K+E%3BSmith%2C+M+D%3BSquyres%2C+S+W%3BWolff%2C+M+J%3BWray%2C+J+J&rft.aulast=Arvidson&rft.aufirst=R&rft.date=2015-03-01&rft.volume=120&rft.issue=3&rft.spage=429&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2F2014JE004686 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9100 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 60 N1 - PubXState - DC N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2015-07-30 N1 - SubjectsTermNotLitGenreText - Ada Crater; aquatic environment; Botany Bay; brines; Burns Formation; chemically precipitated rocks; diagenesis; Endeavour Crater; evaporites; gypsum; impact craters; impact features; kieserite; Mars; Mars Exploration Rover; Mars Reconnaissance Orbiter; Meridiani Planum; Noachian; observations; Opportunity Rover; planets; Santa Maria Crater; sedimentary rocks; sulfates; terrestrial planets; Victoria Crater DO - http://dx.doi.org/10.1002/2014JE004686 ER - TY - JOUR T1 - Spectral comparison and stability of red regions on Jupiter AN - 1700097378; 2015-073236 AB - A rare red cyclone visible on Jupiter in 1994 and 1995 falls in a class of vortices that are intensely colored, yet low altitude, unlike the Great Red Spot (GRS). Dynamical modeling indicates that the presence of nearby anticyclones both aids in formation and lead to the destruction of the cyclone. A study of absolute spectral reflectance from Hubble Space Telescope imaging data shows that GRS is not typically the "reddest" region of the planet. Rather, transient red cyclones and the reddest parts of the North Equatorial Belt show less reflectance than the GRS at all wavelengths, with enhanced absorption at wavelengths near 500 nm. Temporal analysis shows that the darkest regions of the North Equatorial Belt and transient red cyclones are relatively constant in color from 1995 to 2014, while the spectral slope and absolute brightness of the GRS core vary over time. Laboratory data of colored materials that yield a good qualitative fit to the GRS spectrum do not match the spectra of other regions, and wavelengths from 400 to 700 nm may be most diagnostic of chromophore identification. Abstract Copyright (2015), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Simon, Amy A AU - Sanchez-Lavega, Agustin AU - Legarreta, Jon AU - Sanz-Requena, Jose Francisco AU - Perez-Hoyos, Santiago AU - Garcia-Melendo, Enrique AU - Carlson, Robert W Y1 - 2015/03// PY - 2015 DA - March 2015 SP - 483 EP - 494 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 120 IS - 3 SN - 2169-9097, 2169-9097 KW - solar system KW - planets KW - Jupiter KW - Hubble Space Telescope KW - spectra KW - outer planets KW - reflectance KW - North Equatorial Belt KW - Great Red Spot KW - remote sensing KW - giant planets KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700097378?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Planets&rft.atitle=Spectral+comparison+and+stability+of+red+regions+on+Jupiter&rft.au=Simon%2C+Amy+A%3BSanchez-Lavega%2C+Agustin%3BLegarreta%2C+Jon%3BSanz-Requena%2C+Jose+Francisco%3BPerez-Hoyos%2C+Santiago%3BGarcia-Melendo%2C+Enrique%3BCarlson%2C+Robert+W&rft.aulast=Simon&rft.aufirst=Amy&rft.date=2015-03-01&rft.volume=120&rft.issue=3&rft.spage=483&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2F2014JE004688 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9100 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 63 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2015-07-30 N1 - SubjectsTermNotLitGenreText - giant planets; Great Red Spot; Hubble Space Telescope; Jupiter; North Equatorial Belt; outer planets; planets; reflectance; remote sensing; solar system; spectra DO - http://dx.doi.org/10.1002/2014JE004688 ER - TY - JOUR T1 - Dynamical evolution of the Earth-Moon progenitors; whence Theia? AN - 1692744573; 2015-059981 AB - We present integrations of a model Solar System with five terrestrial planets (beginning approximately 30-50 Myr after the formation of primitive Solar System bodies) in order to determine the preferred regions of parameter space leading to a Giant Impact that resulted in the formation of the Moon. Our results indicate which choices of semimajor axes and eccentricities for Theia (the proto-Moon) at this epoch can produce a late Giant Impact, assuming that Mercury, Venus, and Mars are near the current orbits. We find that the likely semimajor axis of Theia, at the epoch when our simulations begin, depends on the assumed mass ratio of Earth-Moon progenitors (8/1, 4/1, or 1/1). The low eccentricities of the terrestrial planets are most commonly produced when the progenitors have similar semimajor axes at the epoch when our integrations commence. Additionally, we show that mean motion resonances among the terrestrial planets and perturbations from the giant planets can affect the dynamical evolution of the system leading to a late Giant Impact. JF - Icarus AU - Quarles, Billy L AU - Lissauer, Jack J Y1 - 2015/03/01/ PY - 2015 DA - 2015 Mar 01 SP - 318 EP - 339 PB - Elsevier, New York, NY VL - 248 SN - 0019-1035, 0019-1035 KW - solar system KW - angular momentum KW - Moon KW - orbits KW - impacts KW - simulation KW - giant planets KW - eccentricity KW - early solar system KW - terrestrial planets KW - models KW - planets KW - Earth-Moon couple KW - resonance KW - giant impact hypothesis KW - chronology KW - dynamics KW - Theia KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692744573?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Dynamical+evolution+of+the+Earth-Moon+progenitors%3B+whence+Theia%3F&rft.au=Quarles%2C+Billy+L%3BLissauer%2C+Jack+J&rft.aulast=Quarles&rft.aufirst=Billy&rft.date=2015-03-01&rft.volume=248&rft.issue=&rft.spage=318&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.10.044 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 70 N1 - PubXState - NY N1 - Document feature - illus. incl. 12 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-07-02 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - angular momentum; chronology; dynamics; early solar system; Earth-Moon couple; eccentricity; giant impact hypothesis; giant planets; impacts; models; Moon; orbits; planets; resonance; simulation; solar system; terrestrial planets; Theia DO - http://dx.doi.org/10.1016/j.icarus.2014.10.044 ER - TY - JOUR T1 - New insights into the late Amazonian zonal shrinkage of the Martian south polar plateau AN - 1692744185; 2015-059988 AB - The martian south polar plateau, Planum Australe, comprises the largest known water-ice surface deposit on the planet. Here, we present evidence for an episode of extensive polar plateau retreat during the Late Amazonian, which affected regions flanking circum-polar terrains located between Cavi Angusti and Sisyphi Montes. JF - Icarus AU - Rodriguez, J Alexis P AU - Leonard, Gregory J AU - Platz, Thomas AU - Tanaka, Kenneth L AU - Kargel, Jeffrey S AU - Fairen, Alberto G AU - Gulick, Virginia AU - Baker, Victor R AU - Glines, Natalie AU - Miyamoto, Hideaki AU - Yan, Jianguo AU - Oguma, Midori Y1 - 2015/03/01/ PY - 2015 DA - 2015 Mar 01 SP - 407 EP - 411 PB - Elsevier, New York, NY VL - 248 SN - 0019-1035, 0019-1035 KW - polar regions KW - chasmata KW - THEMIS KW - Promethei Basin KW - Mars KW - mapping KW - landforms KW - south pole KW - digital terrain models KW - troughs KW - layered materials KW - polar caps KW - terrestrial planets KW - plateaus KW - planets KW - Sisyphi Montes KW - Amazonian KW - ice KW - MOLA KW - Planum Australe KW - Cavi Angusti KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692744185?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=New+insights+into+the+late+Amazonian+zonal+shrinkage+of+the+Martian+south+polar+plateau&rft.au=Rodriguez%2C+J+Alexis+P%3BLeonard%2C+Gregory+J%3BPlatz%2C+Thomas%3BTanaka%2C+Kenneth+L%3BKargel%2C+Jeffrey+S%3BFairen%2C+Alberto+G%3BGulick%2C+Virginia%3BBaker%2C+Victor+R%3BGlines%2C+Natalie%3BMiyamoto%2C+Hideaki%3BYan%2C+Jianguo%3BOguma%2C+Midori&rft.aulast=Rodriguez&rft.aufirst=J+Alexis&rft.date=2015-03-01&rft.volume=248&rft.issue=&rft.spage=407&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.08.047 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 45 N1 - PubXState - NY N1 - Document feature - illus. incl. sketch maps N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-11-19 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - Amazonian; Cavi Angusti; chasmata; digital terrain models; ice; landforms; layered materials; mapping; Mars; MOLA; planets; Planum Australe; plateaus; polar caps; polar regions; Promethei Basin; Sisyphi Montes; south pole; terrestrial planets; THEMIS; troughs DO - http://dx.doi.org/10.1016/j.icarus.2014.08.047 ER - TY - JOUR T1 - Mercury's seasonal sodium exosphere; MESSENGER orbital observations AN - 1692744043; 2015-059996 AB - The Mercury Atmospheric and Surface Composition Spectrometer (MASCS) Ultraviolet and Visible Spectrometer (UVVS) on the MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) spacecraft now orbiting Mercury provides the first close-up look at the planet's sodium exosphere. UVVS has observed the exosphere from orbit almost daily for over 10 Mercury years. In this paper we describe and analyze a subset of these data: altitude profiles taken above the low-latitude dayside and south pole. The observations show spatial and temporal variation but there is little or no year-to-year variation; we do not see the episodic variability reported by ground-based observers. We used these altitude profiles to make estimates of sodium density and temperature. The bulk of the exosphere is about 1200 K, much warmer than Mercury's surface. This value is consistent with some ground-based measurements and suggests that photon-stimulated desorption is the primary ejection process. We also observe a tenuous energetic component but do not see evidence of the predicted thermalized (or partially thermalized) sodium near Mercury's surface temperature. Overall we do not see the variable mixture of temperatures predicted by most Monte Carlo models of the exosphere. JF - Icarus AU - Cassidy, Timothy A AU - Merkel, Aimee W AU - Burger, Matthew H AU - Sarantos, Menelaos AU - Killen, Rosemary M AU - McClintock, William E AU - Vervack, Ronald J, Jr Y1 - 2015/03/01/ PY - 2015 DA - 2015 Mar 01 SP - 547 EP - 559 PB - Elsevier, New York, NY VL - 248 SN - 0019-1035, 0019-1035 KW - Ultraviolet and Visible Spectrometer KW - Mercury Atmospheric and Surface Composition Spectrometer KW - Monte Carlo analysis KW - statistical analysis KW - alkali metals KW - atmosphere KW - sodium KW - temperature KW - exosphere KW - terrestrial planets KW - models KW - brightness KW - planets KW - metals KW - Mercury Planet KW - seasonal variations KW - orbital observations KW - MESSENGER Mission KW - MErcury Surface, Space ENvironment, GEochemistry, and Ranging Mission KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692744043?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Mercury%27s+seasonal+sodium+exosphere%3B+MESSENGER+orbital+observations&rft.au=Cassidy%2C+Timothy+A%3BMerkel%2C+Aimee+W%3BBurger%2C+Matthew+H%3BSarantos%2C+Menelaos%3BKillen%2C+Rosemary+M%3BMcClintock%2C+William+E%3BVervack%2C+Ronald+J%2C+Jr&rft.aulast=Cassidy&rft.aufirst=Timothy&rft.date=2015-03-01&rft.volume=248&rft.issue=&rft.spage=547&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.10.037 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 69 N1 - PubXState - NY N1 - Document feature - illus. N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-11-19 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - alkali metals; atmosphere; brightness; exosphere; Mercury Atmospheric and Surface Composition Spectrometer; Mercury Planet; MErcury Surface, Space ENvironment, GEochemistry, and Ranging Mission; MESSENGER Mission; metals; models; Monte Carlo analysis; orbital observations; planets; seasonal variations; sodium; statistical analysis; temperature; terrestrial planets; Ultraviolet and Visible Spectrometer DO - http://dx.doi.org/10.1016/j.icarus.2014.10.037 ER - TY - JOUR T1 - A semianalytical ocean color inversion algorithm with explicit water column depth and substrate reflectance parameterization AN - 1692742634; 2015-060623 AB - A semianalytical ocean color inversion algorithm was developed for improving retrievals of inherent optical properties (IOPs) in optically shallow waters. In clear, geometrically shallow waters, light reflected off the seafloor can contribute to the water-leaving radiance signal. This can have a confounding effect on ocean color algorithms developed for optically deep waters, leading to an overestimation of IOPs. The algorithm described here, the Shallow Water Inversion Model (SWIM), uses pre-existing knowledge of bathymetry and benthic substrate brightness to account for optically shallow effects. SWIM was incorporated into the NASA Ocean Biology Processing Group's L2GEN code and tested in waters of the Great Barrier Reef, Australia, using the Moderate Resolution Imaging Spectroradiometer (MODIS) Aqua time series (2002-2013). SWIM-derived values of the total non-water absorption coefficient at 443 nm, a (sub t) (443), the particulate backscattering coefficient at 443 nm, b (sub bp) (443), and the diffuse attenuation coefficient at 488 nm, K (sub d) (488), were compared with values derived using the Generalized Inherent Optical Properties algorithm (GIOP) and the Quasi-Analytical Algorithm (QAA). The results indicated that in clear, optically shallow waters SWIM-derived values of a (sub t) (443), b (sub bp) (443), and K (sub d) (443) were realistically lower than values derived using GIOP and QAA, in agreement with radiative transfer modeling. This signified that the benthic reflectance correction was performing as expected. However, in more optically complex waters, SWIM had difficulty converging to a solution, a likely consequence of internal IOP parameterizations. Whilst a comprehensive study of the SWIM algorithm's behavior was conducted, further work is needed to validate the algorithm using in situ data. Abstract Copyright (2015), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Oceans AU - McKinna, Lachlan I W AU - Fearns, Peter R C AU - Weeks, Scarla J AU - Werdell, P Jeremy AU - Reichstetter, Martina AU - Franz, Bryan A AU - Shea, Donald M AU - Feldman, Gene C Y1 - 2015/03// PY - 2015 DA - March 2015 SP - 1741 EP - 1770 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 120 IS - 3 SN - 2169-9275, 2169-9275 KW - sea water KW - Australasia KW - Southwest Pacific KW - Great Barrier Reef KW - South Pacific KW - satellite methods KW - West Pacific KW - optical properties KW - Coral Sea KW - color KW - Queensland Australia KW - Pacific Ocean KW - Australia KW - bathymetry KW - algorithms KW - reflectance KW - remote sensing KW - MODIS KW - 07:Oceanography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692742634?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Oceans&rft.atitle=A+semianalytical+ocean+color+inversion+algorithm+with+explicit+water+column+depth+and+substrate+reflectance+parameterization&rft.au=McKinna%2C+Lachlan+I+W%3BFearns%2C+Peter+R+C%3BWeeks%2C+Scarla+J%3BWerdell%2C+P+Jeremy%3BReichstetter%2C+Martina%3BFranz%2C+Bryan+A%3BShea%2C+Donald+M%3BFeldman%2C+Gene+C&rft.aulast=McKinna&rft.aufirst=Lachlan+I&rft.date=2015-03-01&rft.volume=120&rft.issue=3&rft.spage=1741&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Oceans&rft.issn=21699275&rft_id=info:doi/10.1002%2F2014JC010224 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 40 N1 - PubXState - DC N1 - Document feature - illus. incl. 8 tables, sketch map N1 - Last updated - 2015-07-02 N1 - SubjectsTermNotLitGenreText - algorithms; Australasia; Australia; bathymetry; color; Coral Sea; Great Barrier Reef; MODIS; optical properties; Pacific Ocean; Queensland Australia; reflectance; remote sensing; satellite methods; sea water; South Pacific; Southwest Pacific; West Pacific DO - http://dx.doi.org/10.1002/2014JC010224 ER - TY - JOUR T1 - Gas phase dicyanoacetylene (C (sub 4) N (sub 2) ) on Titan; new experimental and theoretical spectroscopy results applied to Cassini CIRS data AN - 1692741738; 2015-059982 AB - Dicyanoacetylene has not been observed so far in the gas phase in Titan's atmosphere but this molecule is still on the list of the detected species, on the basis of the correspondence between a solid phase feature measured at 478 cm (super -1) in the laboratory and a spectral feature observed by Voyager. In this work, the infrared spectrum of gaseous C (sub 4) N (sub 2) has been investigated to improve our knowledge of the band intensities and the line parameters for this molecule. Results of previously investigated bands have been revised and the intensity of the v (sub 9) band at 107 cm (super -1) , measured for the first time, was found to be the strongest absorption in the whole infrared domain. We have also improved the analysis of the complex rotational and hot band structure of C (sub 4) N (sub 2) in order to obtain the first line lists for both bending modes v (sub 8) and v (sub 9) . Using our radiative transfer code including the new line list of the strong v (sub 9) band, we have searched for the signature of C (sub 4) N (sub 2) at 107 cm (super -1) in the atmosphere of Titan utilizing Titan CIRS far infrared spectra. Despite averaging a large number of CIRS spectra at northern latitudes during the very favorable Titan winter, no gaseous C (sub 4) N (sub 2) could be detected. At the 1-sigma level we obtain an abundance upper limit of 5.3 + or - 10 (super -10) for the limb average which is lower than or comparable to previously inferred values. As a consequence, the absence or very low amount of gaseous C (sub 4) N (sub 2) makes quite puzzling its presence in the solid phase with an abundance compatible with the observed spectral feature at 478 cm (super -1) . JF - Icarus AU - Jolly, A AU - Cottini, V AU - Fayt, A AU - Manceron, L AU - Kwabia-Tchana, F AU - Benilan, Y AU - Guillemin, J C AU - Nixon, C AU - Irwin, P Y1 - 2015/03/01/ PY - 2015 DA - 2015 Mar 01 SP - 340 EP - 346 PB - Elsevier, New York, NY VL - 248 SN - 0019-1035, 0019-1035 KW - icy satellites KW - experimental studies KW - gaseous phase KW - atmosphere KW - temperature KW - infrared spectra KW - theoretical studies KW - Cassini-Huygens Mission KW - Titan Satellite KW - dicyanoacetylene KW - spectra KW - satellites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692741738?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Gas+phase+dicyanoacetylene+%28C+%28sub+4%29+N+%28sub+2%29+%29+on+Titan%3B+new+experimental+and+theoretical+spectroscopy+results+applied+to+Cassini+CIRS+data&rft.au=Jolly%2C+A%3BCottini%2C+V%3BFayt%2C+A%3BManceron%2C+L%3BKwabia-Tchana%2C+F%3BBenilan%2C+Y%3BGuillemin%2C+J+C%3BNixon%2C+C%3BIrwin%2C+P&rft.aulast=Jolly&rft.aufirst=A&rft.date=2015-03-01&rft.volume=248&rft.issue=&rft.spage=340&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.10.049 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 30 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2015-07-02 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - atmosphere; Cassini-Huygens Mission; dicyanoacetylene; experimental studies; gaseous phase; icy satellites; infrared spectra; satellites; spectra; temperature; theoretical studies; Titan Satellite DO - http://dx.doi.org/10.1016/j.icarus.2014.10.049 ER - TY - JOUR T1 - Satellite view of quasi-equilibrium states in tropical convection and precipitation microphysics AN - 1683352605; PQ0001480314 AB - This study shows the time series of statistical composites of precipitation-microphysics signals derived from long-term Tropical Rainfall Measuring Mission (TRMM) satellite observations aggregated over the entire tropical domain (37 degree N-37 degree S). The result shows the nearly time-invariant monthly signal statistics throughout this time, confirming convection quasi-equilibrium (CQE) states. Merged precipitation data, with much better temporal and spatial coverage, provide evidence that the equilibrium state occurs on a daily scale. These results further indicate the presence of precipitation microphysics quasi-equilibrium (MQE) within the CQE environment. A simple analytic microphysics framework illustrates the equilibrium precipitation size distribution, as compared with the TRMM radar-based as well as preliminary Global Precipitation Measurement combined retrievals. The MQE readily explains the near-constant tropical precipitation rate, which is roughly balanced with atmospheric radiative cooling rate at the entire tropical scale. Further investigation is required through theoretical, observational, and numerical manners to support the MQE hypothesis. Key Points * TRMM satellite precipitation signal statistics * Convective quasi-equilibrium * Microphysics quasi-equilibrium hypothesis with TRMM and GPM data JF - Geophysical Research Letters AU - Matsui, Toshi AU - Tao, Wei-Kuo AU - Munchak, SJoseph AU - Grecu, Mircea AU - Huffman, George J AD - Mesoscale Atmospheric Processes Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2015/03// PY - 2015 DA - March 2015 SP - 1959 EP - 1968 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 42 IS - 6 SN - 0094-8276, 0094-8276 KW - Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Remote Sensing KW - Convection KW - Precipitation data KW - Statistics KW - Time series KW - Statistical analysis KW - Precipitation microphysics KW - Remote sensing KW - Convection development KW - Time series analysis KW - Equilibrium states KW - Hydrologic Data KW - Satellite Technology KW - Global precipitation KW - Precipitation KW - Cooling KW - Satellite sensing KW - Satellite data KW - Equilibrium KW - Tropical convection KW - Tropical environment KW - Convective activity KW - Tropical Rainfall Measuring Mission (TRMM) KW - Size distribution KW - Precipitation Rate KW - SW 5010:Network design KW - AQ 00005:Underground Services and Water Use KW - Q2 09261:General KW - M2 551.578.1:Liquid (551.578.1) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1683352605?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=Satellite+view+of+quasi-equilibrium+states+in+tropical+convection+and+precipitation+microphysics&rft.au=Matsui%2C+Toshi%3BTao%2C+Wei-Kuo%3BMunchak%2C+SJoseph%3BGrecu%2C+Mircea%3BHuffman%2C+George+J&rft.aulast=Matsui&rft.aufirst=Toshi&rft.date=2015-03-01&rft.volume=42&rft.issue=6&rft.spage=1959&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2015GL063261 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-01 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Convection; Satellite sensing; Time series; Tropical environment; Remote sensing; Size distribution; Satellite data; Precipitation data; Tropical convection; Convective activity; Global precipitation; Precipitation microphysics; Statistical analysis; Tropical Rainfall Measuring Mission (TRMM); Equilibrium states; Convection development; Precipitation; Time series analysis; Remote Sensing; Satellite Technology; Statistics; Equilibrium; Cooling; Hydrologic Data; Precipitation Rate DO - http://dx.doi.org/10.1002/2015GL063261 ER - TY - JOUR T1 - CM5, a pre-swarm comprehensive geomagnetic field model derived from over 12 yr of CHAMP, Orsted, SAC-C and observatory data AN - 1680753006; 2015-041992 AB - A comprehensive magnetic field model named CM5 has been derived from CHAMP, Orsted and SAC-C satellite and observatory hourly-means data from 2000 August to 2013 January using the Swarm Level-2 Comprehensive Inversion (CI) algorithm. Swarm is a recently launched constellation of three satellites to map the Earth's magnetic field. The CI technique includes several interesting features such as the bias mitigation scheme known as Selective Infinite Variance Weighting (SIVW), a new treatment for attitude error in satellite vector measurements, and the inclusion of 3-D conductivity for ionospheric induction. SIVW has allowed for a much improved lithospheric field recovery over CM4 by exploiting CHAMP along-track difference data yielding resolution levels up to spherical harmonic degree 107, and has allowed for the successful extraction of the oceanic M2 tidal magnetic field from quiet, nightside data. The 3-D induction now captures anomalous Solar-quiet features in coastal observatory daily records. CM5 provides a satisfactory, continuous description of the major magnetic fields in the near-Earth region over this time span, and its lithospheric, ionospheric and oceanic M2 tidal constituents may be used as validation tools for future Swarm Level-2 products coming from the CI algorithm and other dedicated product algorithms. JF - Geophysical Journal International AU - Sabaka, Terence J AU - Olsen, Nils AU - Tyler, Robert H AU - Kuvshinov, Alexey Y1 - 2015/03// PY - 2015 DA - March 2015 SP - 1596 EP - 1626 PB - Oxford University Press on behalf of The Royal Astronomical Society, the Deutsche Geophysikalische Gesellschaft and the European Geophysical Society VL - 200 IS - 3 SN - 0956-540X, 0956-540X KW - Satelite de Aplicaciones Cientificas-C KW - models KW - Swarm Mission KW - ground methods KW - CHAMP KW - satellite methods KW - Orsted Satellite KW - magnetic field KW - remote sensing KW - CM5 model KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680753006?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Journal+International&rft.atitle=CM5%2C+a+pre-swarm+comprehensive+geomagnetic+field+model+derived+from+over+12+yr+of+CHAMP%2C+Orsted%2C+SAC-C+and+observatory+data&rft.au=Sabaka%2C+Terence+J%3BOlsen%2C+Nils%3BTyler%2C+Robert+H%3BKuvshinov%2C+Alexey&rft.aulast=Sabaka&rft.aufirst=Terence&rft.date=2015-03-01&rft.volume=200&rft.issue=3&rft.spage=1596&rft.isbn=&rft.btitle=&rft.title=Geophysical+Journal+International&rft.issn=0956540X&rft_id=info:doi/10.1093%2Fgji%2Fggu493 L2 - http://www.blackwellpublishing.com/journal.asp?ref=0956-540X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 60 N1 - Document feature - illus. incl. 3 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-10-25 N1 - SubjectsTermNotLitGenreText - CHAMP; CM5 model; ground methods; magnetic field; models; Orsted Satellite; remote sensing; Satelite de Aplicaciones Cientificas-C; satellite methods; Swarm Mission DO - http://dx.doi.org/10.1093/gji/ggu493 ER - TY - JOUR T1 - Amino acid analyses of R and CK chondrites AN - 1680750985; 2015-044687 AB - Exogenous delivery of amino acids and other organic molecules to planetary surfaces may have played an important role in the origins of life on Earth and other solar system bodies. Previous studies have revealed the presence of indigenous amino acids in a wide range of carbon-rich meteorites, with the abundances and structural distributions differing significantly depending on parent body mineralogy and alteration conditions. Here we report on the amino acid abundances of seven type 3-6 CK chondrites and two Rumuruti (R) chondrites. Amino acid measurements were made on hot water extracts from these meteorites by ultrahigh-performance liquid chromatography with fluorescence detection and time-of-flight mass spectrometry. Of the nine meteorites analyzed, four were depleted in amino acids, and one had experienced significant amino acid contamination by terrestrial biology. The remaining four, comprised of two R and two CK chondrites, contained low levels of amino acids that were predominantly the straight chain, amino-terminal (n-omega -amino) acids beta -alanine, and gamma -amino-n-butyric acid. This amino acid distribution is similar to what we reported previously for thermally altered ureilites and CV and CO chondrites, and these n-omega -amino acids appear to be indigenous to the meteorites and not the result of terrestrial contamination. The amino acids may have been formed by Fischer-Tropsch-type reactions, although this hypothesis needs further testing. Abstract Copyright The Meteoritical Society, 2015. JF - Meteoritics & Planetary Science AU - Burton, Aaron S AU - McLain, Hannah AU - Glavin, Daniel P AU - Elsila, Jamie E AU - Davidson, Jemma AU - Miller, Kelly E AU - Andronikov, Alexander V AU - Lauretta, Dante AU - Dworkin, Jason P Y1 - 2015/03// PY - 2015 DA - March 2015 SP - 470 EP - 482 PB - Meteoritical Society, Fayetteville, AR VL - 50 IS - 3 SN - 1086-9379, 1086-9379 KW - Pecora Escarpment Meteorites KW - stony meteorites KW - Lewis Cliff Meteorites KW - LaPaz Icefield Meteorites KW - mass spectra KW - LEW 87009 KW - PCA 82500 KW - CV chondrites KW - life origin KW - CO chondrites KW - meteorites KW - fluorescence KW - LAP 031135 KW - amino acids KW - spectra KW - chondrites KW - parent bodies KW - liquid chromatograms KW - Fischer-Tropsch reactions KW - LAP 03834 KW - thermal metamorphism KW - carbonaceous chondrites KW - metamorphism KW - organic compounds KW - organic acids KW - chromatograms KW - rumurutiites KW - CK chondrites KW - preservation KW - 05B:Petrology of meteorites and tektites KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680750985?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=Amino+acid+analyses+of+R+and+CK+chondrites&rft.au=Burton%2C+Aaron+S%3BMcLain%2C+Hannah%3BGlavin%2C+Daniel+P%3BElsila%2C+Jamie+E%3BDavidson%2C+Jemma%3BMiller%2C+Kelly+E%3BAndronikov%2C+Alexander+V%3BLauretta%2C+Dante%3BDworkin%2C+Jason+P&rft.aulast=Burton&rft.aufirst=Aaron&rft.date=2015-03-01&rft.volume=50&rft.issue=3&rft.spage=470&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12433 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 56 N1 - PubXState - AR N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2015-08-13 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - amino acids; carbonaceous chondrites; chondrites; chromatograms; CK chondrites; CO chondrites; CV chondrites; Fischer-Tropsch reactions; fluorescence; LAP 031135; LAP 03834; LaPaz Icefield Meteorites; LEW 87009; Lewis Cliff Meteorites; life origin; liquid chromatograms; mass spectra; metamorphism; meteorites; organic acids; organic compounds; parent bodies; PCA 82500; Pecora Escarpment Meteorites; preservation; rumurutiites; spectra; stony meteorites; thermal metamorphism DO - http://dx.doi.org/10.1111/maps.12433 ER - TY - JOUR T1 - Capturing season-specific precipitation signals in the northern Rocky Mountains, USA, using earlywood and latewood tree rings AN - 1676361032; PQ0001460479 AB - Douglas-fir (Pseudotsuga menziesii Mirb. Franco) total width, earlywood, and latewood tree ring chronologies were developed from six lower forest border sites in the northern Rocky Mountain region of central Idaho and southwestern Montana, USA, to assess the potential for season-specific moisture reconstructions. These long-lived arid-site trees share strong between-tree and between-site coherence, and subannual tree ring chronologies reliably span the past seven centuries. Mapping spatiotemporal patterns in northern Rocky Mountain precipitation highlighted winter- and summer-dominated precipitation regimes that transition along a west to east gradient. When Douglas-fir tree rings were compared with instrumental climate records, season-specific correlations emerged between earlywood and latewood. Total width, earlywood, and latewood shared the most statistically significant monthly correlations with April-June precipitation, whereas variability in adjusted latewood was tuned to June-August precipitation. Principal component analysis indicated that the leading mode of common variance for earlywood and adjusted latewood explained 65% and 55% variance in the chronologies, respectively. Pearson's correlations between earlywood principal component one and the northern Rocky Mountain precipitation field showed that annual (July-June) and spring (April-June) precipitation exhibited the strongest pattern of significance in central Idaho and southwestern Montana valleys and the Snake River Plain. Summer precipitation (June-August) was correlated with adjusted latewood principal component one and was particularly pronounced along and east of the continental divide in southwestern Montana. These results indicate that Douglas-fir earlywood and adjusted latewood tree rings in the northern Rocky Mountains retain season-specific precipitation signals and may be helpful for studying historical precipitation within the winter-summer transition zone. Key Points * Seasonal precipitation regimes are mapped with fine-scale precipitation data * Earlywood and latewood tree rings have season-specific precipitation signals * Summer precipitation signal is novel and unique to latewood chronologies JF - Journal of Geophysical Research. G. Biogeosciences AU - Crawford, Christopher J AU - Griffin, Daniel AU - Kipfmueller, Kurt F AD - Oak Ridge Associated Universities, Cryospheric Sciences Laboratory, NASA Goddard Space Flight Center, Maryland, USA. Y1 - 2015/03// PY - 2015 DA - March 2015 SP - 428 EP - 440 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 120 IS - 3 SN - 2169-8953, 2169-8953 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Ecology Abstracts KW - Hydrological Regime KW - Variability KW - Trees KW - Principal Component Analysis KW - Statistical analysis KW - Forests KW - Freshwater KW - North America, Rocky Mts. KW - Mountains KW - Mapping KW - USA, Montana KW - Atmospheric precipitations KW - Rivers KW - Data processing KW - Climates KW - Climate KW - Transition Zone KW - Precipitation KW - USA, Idaho, Sawtooth Valley, Snake R. KW - USA, Idaho KW - Principal components analysis KW - Pseudotsuga menziesii KW - Q2 09262:Methods and instruments KW - SW 0810:General KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1676361032?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research.+G.+Biogeosciences&rft.atitle=Capturing+season-specific+precipitation+signals+in+the+northern+Rocky+Mountains%2C+USA%2C+using+earlywood+and+latewood+tree+rings&rft.au=Crawford%2C+Christopher+J%3BGriffin%2C+Daniel%3BKipfmueller%2C+Kurt+F&rft.aulast=Crawford&rft.aufirst=Christopher&rft.date=2015-03-01&rft.volume=120&rft.issue=3&rft.spage=428&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research.+G.+Biogeosciences&rft.issn=21698953&rft_id=info:doi/10.1002%2F2014JG002740 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-04-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Rivers; Atmospheric precipitations; Forests; Mapping; Mountains; Data processing; Trees; Principal components analysis; Climate; Statistical analysis; Precipitation; Hydrological Regime; Variability; Principal Component Analysis; Climates; Transition Zone; Pseudotsuga menziesii; USA, Idaho, Sawtooth Valley, Snake R.; North America, Rocky Mts.; USA, Idaho; USA, Montana; Freshwater DO - http://dx.doi.org/10.1002/2014JG002740 ER - TY - JOUR T1 - Investigation of the transport processes controlling the geographic distribution of carbon monoxide at the tropical tropopause AN - 1673395958; PQ0001357701 AB - Convectively influenced trajectory calculations are used to investigate the impact of different Tropical Tropopause Layer (TTL) transport pathways for establishing the distribution of carbon monoxide (CO) at 100 hPa as observed by the Microwave Limb Sounder (MLS) on board the Aura satellite. Carbon monoxide is a useful tracer for investigating TTL transport and convective influence because the CO lifetime (1-2 months) is comparable to the time required for slow ascent through the TTL. MERRA horizontal winds are used for the diabatic trajectories, and off-line calculations of TTL radiative heating are used to determine the vertical motion field. The locations and times of convective influence events along the trajectories are determined from 3-hourly, geostationary satellite measurements of convective clouds. The trajectory model reproduces most of the prominent features in the 100 hPa CO geographic distribution indicated by the MLS observations for the winter and summer 2007 periods simulated. CO concentrations and tendencies simulated with the Whole Atmosphere Climate Chemistry Model (WACCM) are used to specify boundary-layer concentrations for convective influence and CO loss rates resulting from reaction with OH. The broad maximum in CO concentration over the Pacific during Boreal winter is primarily a result of the strong radiative heating (corresponding to upward vertical motion) associated with the abundant TTL cirrus in this region. Convection over the Pacific brings clean maritime air to the tropopause region and actually decreases the 100 hPa CO. The relative abundance of CO over the continental convective regions during wintertime is sensitive to small variations in convective cloud-top height. Both the simulated and the observed summertime 100 hPa CO distributions are dominated by the maximum co-located with the upper level anticyclone forced by the Asian monsoon convection. Sensitivity tests indicate that the summertime Asian monsoon anticyclone 100 hPa CO maximum is dominated by extreme convective systems with detrainment of polluted air above about 360-365K potential temperature. This result stems directly from the fact that the heating rates are negative (downward motion) below 360-365K during summertime through most of the tropics; therefore, air detrained from convection at lower levels will generally just sink back down into the middle troposphere. We find that most of the CO feeding into the Asian monsoon anticyclone comes from convection over the Tibetan Plateau and India, with relatively minor contributions from southeast Asia and eastern China. Key Points * Highest tropical convection controls tropical tropopause CO * Tropical tropopause heating rate distribution affects tracer distribution * Tibetan Plateau convection is important for Asian anticyclone CO concentration JF - Journal of Geophysical Research: Atmospheres AU - Jensen, E J AU - Pfister, L AU - Ueyama, R AU - Bergman, J W AU - Kinnison, D AD - NASA Ames Research Center, Moffett Field, California, USA. Y1 - 2015/03// PY - 2015 DA - March 2015 SP - 2067 EP - 2086 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 120 IS - 5 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Pollution Abstracts; Meteorological & Geoastrophysical Abstracts KW - Convection KW - Tropical tropopause KW - Atmospheric pollution models KW - Tropopause KW - ISW, India KW - Microwaves KW - Atmospheric chemistry models KW - Southeast Asia KW - Wind KW - Satellite instrumentation KW - Clouds KW - Atmospheric chemistry KW - Monsoons KW - Remote sensing KW - Sinks KW - Convection development KW - Convective systems KW - Vertical motion KW - Winter KW - Carbon monoxide KW - Tracers KW - Plateaus KW - Carbon KW - Ocean-atmosphere system KW - Radiative heating KW - Anticyclones KW - Marine KW - Climate models KW - Climates KW - Temperature KW - Satellites KW - Air pollution KW - China, People's Rep., Xizang, Tibetan Plateau KW - Convective activity KW - Asian monsoons KW - China, People's Rep. KW - ISEW, Southeast Asia KW - Q2 09243:Structure, mechanics and thermodynamics KW - M2 551.510.42:Air Pollution (551.510.42) KW - P 0000:AIR POLLUTION KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1673395958?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=Investigation+of+the+transport+processes+controlling+the+geographic+distribution+of+carbon+monoxide+at+the+tropical+tropopause&rft.au=Jensen%2C+E+J%3BPfister%2C+L%3BUeyama%2C+R%3BBergman%2C+J+W%3BKinnison%2C+D&rft.aulast=Jensen&rft.aufirst=E&rft.date=2015-03-01&rft.volume=120&rft.issue=5&rft.spage=2067&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2014JD022661 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-04-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Air pollution; Convection; Carbon monoxide; Tropopause; Atmospheric chemistry; Ocean-atmosphere system; Anticyclones; Vertical motion; Monsoons; Tropical tropopause; Climate models; Atmospheric pollution models; Convection development; Convective systems; Satellite instrumentation; Clouds; Convective activity; Atmospheric chemistry models; Asian monsoons; Radiative heating; Remote sensing; Temperature; Satellites; Winter; Tracers; Plateaus; Microwaves; Carbon; Climates; Sinks; Wind; China, People's Rep., Xizang, Tibetan Plateau; ISW, India; China, People's Rep.; Southeast Asia; ISEW, Southeast Asia; Marine DO - http://dx.doi.org/10.1002/2014JD022661 ER - TY - JOUR T1 - Using single-scattering albedo spectral curvature to characterize East Asian aerosol mixtures AN - 1673385834; PQ0001357721 AB - Spectral dependence of aerosol single-scattering albedo (SSA) has been used to infer aerosol composition. In particular, aerosol mixtures dominated by dust absorption will have monotonically increasing SSA with wavelength while that dominated by black carbon absorption has monotonically decreasing SSA spectra. However, by analyzing SSA measured at four wavelengths, 440, 675, 870, and 1020nm from the Aerosol Robotic Network data set, we find that the SSA spectra over East Asia are frequently peaked at 675nm. In these cases, we suggest that SSA spectral curvature, defined as the negative of the second derivative of SSA as a function of wavelength, can provide additional information on the composition of these aerosol mixtures. Aerosol SSA spectral curvatures for East Asia during fall and winter are considerably larger than those found in places primarily dominated by biomass burning or dust aerosols. SSA curvature is found to increase as the SSA magnitude decreases. The curvature increases with coarse mode fraction (CMF) to a CMF value of about 0.4, then slightly decreases or remains constant at larger CMF. Mie calculations further verify that the strongest SSA curvature occurs at ~40% dust fraction, with 10% scattering aerosol fraction. The nonmonotonic SSA spectral dependence is likely associated with enhanced absorption in the shortwave by dust, absorption by black carbon at longer wavelengths, and also the flattened absorption optical depth spectral dependence due to the increased particle size. Key Points * SSA spectra are frequently peaked at 675nm over East Asia * The second derivative of SSA spectrum can be used to infer fine/coarse fraction * Results suggest dust fraction ~0.4 results in the largest SSA curvature JF - Journal of Geophysical Research: Atmospheres AU - Li, Jing AU - Carlson, Barbara E AU - Lacis, Andrew A AD - NASA Goddard Institute for Space Studies, New York, New York, USA. Y1 - 2015/03// PY - 2015 DA - March 2015 SP - 2037 EP - 2052 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 120 IS - 5 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Aerosol composition KW - Atmospheric particulates KW - Aerosols KW - Particle Size KW - Optical properties KW - Albedo KW - Absorption spectra KW - Biomass KW - Dusts KW - Dust KW - Wavelengths KW - Wave spectra KW - Incineration KW - Carbon KW - Absorption KW - Asia KW - Eolian dust KW - M2 551.510.42:Air Pollution (551.510.42) KW - SW 0810:General KW - Q2 09105:Research programmes and expeditions UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1673385834?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=Using+single-scattering+albedo+spectral+curvature+to+characterize+East+Asian+aerosol+mixtures&rft.au=Li%2C+Jing%3BCarlson%2C+Barbara+E%3BLacis%2C+Andrew+A&rft.aulast=Li&rft.aufirst=Jing&rft.date=2015-03-01&rft.volume=120&rft.issue=5&rft.spage=2037&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2014JD022433 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-04-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Wave spectra; Atmospheric particulates; Aerosols; Carbon; Albedo; Optical properties; Absorption spectra; Dust; Eolian dust; Aerosol composition; Incineration; Particle Size; Absorption; Biomass; Dusts; Wavelengths; Asia DO - http://dx.doi.org/10.1002/2014JD022433 ER - TY - JOUR T1 - The global structure of upper troposphere-lower stratosphere ozone in GEOS-5: A multiyear assimilation of EOS Aura data AN - 1673384431; PQ0001357702 AB - Eight years of ozone measurements retrieved from the Ozone Monitoring Instrument and the Microwave Limb Sounder, both on the EOS Aura satellite, have been assimilated into the Goddard Earth Observing System Version 5 (GEOS-5) data assimilation system. This study evaluates this assimilated product, highlighting its potential for science. The impact of observations on the GEOS-5 system is explored by examining the spatial distribution of the observation-minus-forecast statistics. Independent data are used for product validation. The correlation of the lower stratospheric (the tropopause to 50hPa) ozone column with ozonesondes is 0.99 and the (high) bias is 0.5%, indicating the success of the assimilation in reproducing the ozone variability in that layer. The upper tropospheric (500hPa to the tropopause) assimilated ozone column is about 10% lower than the ozonesonde column, but the correlation is still high (0.87). The assimilation is shown to realistically capture the sharp cross-tropopause gradient in ozone mixing ratio. Occurrence of transport-driven low ozone laminae in the assimilation system is similar to that obtained from the High Resolution Dynamics Limb Sounder (HIRDLS) above the 400K potential temperature surface, but the assimilation produces fewer laminae than seen by HIRDLS below that surface. Although the assimilation produces about 25% fewer occurrences per day during the 3years of HIRDLS data, the interannual variability is captured correctly. This data-driven assimilated product is complementary to ozone fields generated from chemistry and transport models. Applications include study of the radiative forcing by ozone and tracer transport near the tropopause. Key Points * Ozone observations from OMI and MLS are assimilated into GEOS-5 * Very good agreement with ozonesondes in the lower stratosphere * Representation of transport-driven ozone structures in the UTLS JF - Journal of Geophysical Research: Atmospheres AU - Wargan, Krzysztof AU - Pawson, Steven AU - Olsen, Mark A AU - Witte, Jacquelyn C AU - Douglass, Anne R AU - Ziemke, Jerald R AU - Strahan, Susan E AU - Nielsen, JEric AD - Global Modeling and Assimilation Office, Code 610.1, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2015/03// PY - 2015 DA - March 2015 SP - 2013 EP - 2036 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 120 IS - 5 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Pollution Abstracts; Meteorological & Geoastrophysical Abstracts KW - Remote Sensing KW - Pollution monitoring KW - Variability KW - Ozone monitoring KW - Ozone measurements KW - Statistics KW - Atmospheric pollution models KW - Spatial distribution KW - Tropopause KW - Remote sensing KW - Correlations KW - Statistical analysis KW - Spatial Distribution KW - Data assimilation KW - Ozone in troposphere KW - Tracers KW - Radiative forcing KW - Microwaves KW - Ozonesondes KW - Atmospheric chemistry models KW - Emission measurements KW - Mixing ratio KW - Monitoring instruments KW - Ozone KW - Modelling KW - Satellite Technology KW - Data collection KW - Temperature KW - Troposphere KW - Satellite instrumentation KW - Satellites KW - Stratosphere KW - Tracer transport KW - Potential temperature KW - Atmospheric chemistry KW - Monitoring KW - Q2 09243:Structure, mechanics and thermodynamics KW - M2 551.510.42:Air Pollution (551.510.42) KW - P 0000:AIR POLLUTION KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1673384431?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=The+global+structure+of+upper+troposphere-lower+stratosphere+ozone+in+GEOS-5%3A+A+multiyear+assimilation+of+EOS+Aura+data&rft.au=Wargan%2C+Krzysztof%3BPawson%2C+Steven%3BOlsen%2C+Mark+A%3BWitte%2C+Jacquelyn+C%3BDouglass%2C+Anne+R%3BZiemke%2C+Jerald+R%3BStrahan%2C+Susan+E%3BNielsen%2C+JEric&rft.aulast=Wargan&rft.aufirst=Krzysztof&rft.date=2015-03-01&rft.volume=120&rft.issue=5&rft.spage=2013&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2014JD022493 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-04-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Tracers; Microwaves; Tropopause; Potential temperature; Troposphere; Mixing ratio; Stratosphere; Modelling; Ozone; Ozone measurements; Ozone monitoring; Atmospheric pollution models; Statistical analysis; Correlations; Satellite instrumentation; Data assimilation; Ozone in troposphere; Radiative forcing; Tracer transport; Ozonesondes; Atmospheric chemistry models; Pollution monitoring; Data collection; Spatial distribution; Temperature; Remote sensing; Satellites; Atmospheric chemistry; Emission measurements; Monitoring instruments; Remote Sensing; Satellite Technology; Variability; Statistics; Spatial Distribution; Monitoring DO - http://dx.doi.org/10.1002/2014JD022493 ER - TY - JOUR T1 - The Coplane Analysis Technique for Three-Dimensional Wind Retrieval Using the HIWRAP Airborne Doppler Radar AN - 1668251757; PQ0001339475 AB - The coplane analysis technique for mapping the three-dimensional wind field of precipitating systems is applied to the NASA High-Altitude Wind and Rain Airborne Profiler (HIWRAP). HIWRAP is a dual-frequency Doppler radar system with two downward-pointing and conically scanning beams. The coplane technique interpolates radar measurements onto a natural coordinate frame, directly solves for two wind components, and integrates the mass continuity equation to retrieve the unobserved third wind component. This technique is tested using a model simulation of a hurricane and compared with a global optimization retrieval. The coplane method produced lower errors for the cross-track and vertical wind components, while the global optimization method produced lower errors for the along-track wind component. Cross-track and vertical wind errors were dependent upon the accuracy of the estimated boundary condition winds near the surface and at nadir, which were derived by making certain assumptions about the vertical velocity field. The coplane technique was then applied successfully to HIWRAP observations of Hurricane Ingrid (2013). Unlike the global optimization method, the coplane analysis allows for a transparent connection between the radar observations and specific analysis results. With this ability, small-scale features can be analyzed more adequately and erroneous radar measurements can be identified more easily. JF - Journal of Applied Meteorology and Climatology AU - Didlake, Anthony C, Jr AU - Heymsfield, Gerald M AU - Tian, Lin AU - Guimond, Stephen R AD - NASA Goddard Space Flight Center, Greenbelt, Maryland, and Oak Ridge Associated Universities, Oak Ridge, Tennessee Y1 - 2015/03// PY - 2015 DA - March 2015 SP - 605 EP - 623 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 54 IS - 3 SN - 1558-8424, 1558-8424 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Hurricanes/typhoons KW - Aircraft observations KW - Algorithms KW - Kinematics KW - Radars/Radar observations KW - Field experiments KW - Model Testing KW - Boundary conditions KW - Wind fields KW - Wind components KW - Vertical velocities KW - Climatology KW - Continuity Equation KW - Mapping KW - Wind KW - Airborne sensing KW - Mathematical models KW - Radar wind measurements KW - Velocity KW - Airborne Doppler radar KW - Errors KW - Hurricanes KW - Doppler radar KW - Numerical simulations KW - Radar KW - Optimization KW - Q2 09393:Remote geosensing KW - SW 0815:Precipitation KW - M2 551.578.1:Liquid (551.578.1) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668251757?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Applied+Meteorology+and+Climatology&rft.atitle=The+Coplane+Analysis+Technique+for+Three-Dimensional+Wind+Retrieval+Using+the+HIWRAP+Airborne+Doppler+Radar&rft.au=Didlake%2C+Anthony+C%2C+Jr%3BHeymsfield%2C+Gerald+M%3BTian%2C+Lin%3BGuimond%2C+Stephen+R&rft.aulast=Didlake&rft.aufirst=Anthony&rft.date=2015-03-01&rft.volume=54&rft.issue=3&rft.spage=605&rft.isbn=&rft.btitle=&rft.title=Journal+of+Applied+Meteorology+and+Climatology&rft.issn=15588424&rft_id=info:doi/10.1175%2FJAMC-D-14-0203.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-03-01 N1 - Number of references - 35 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Airborne sensing; Hurricanes; Mathematical models; Radar; Climatology; Mapping; Wind fields; Doppler radar; Numerical simulations; Radar wind measurements; Wind components; Vertical velocities; Airborne Doppler radar; Boundary conditions; Velocity; Continuity Equation; Model Testing; Errors; Optimization; Wind DO - http://dx.doi.org/10.1175/JAMC-D-14-0203.1 ER - TY - JOUR T1 - Irrigation as an historical climate forcing AN - 1664195440; PQ0001241203 AB - Irrigation is the single largest anthropogenic water use, a modification of the land surface that significantly affects surface energy budgets, the water cycle, and climate. Irrigation, however, is typically not included in standard historical general circulation model (GCM) simulations along with other anthropogenic and natural forcings. To investigate the importance of irrigation as an anthropogenic climate forcing, we conduct two 5-member ensemble GCM experiments. Both are setup identical to the historical forced (anthropogenic plus natural) scenario used in version 5 of the Coupled Model Intercomparison Project, but in one experiment we also add water to the land surface using a dataset of historically estimated irrigation rates. Irrigation has a negligible effect on the global average radiative balance at the top of the atmosphere, but causes significant cooling of global average surface air temperatures over land and dampens regional warming trends. This cooling is regionally focused and is especially strong in Western North America, the Mediterranean, the Middle East, and Asia. Irrigation enhances cloud cover and precipitation in these same regions, except for summer in parts of Monsoon Asia, where irrigation causes a reduction in monsoon season precipitation. Irrigation cools the surface, reducing upward fluxes of longwave radiation (increasing net longwave), and increases cloud cover, enhancing shortwave reflection (reducing net shortwave). The relative magnitude of these two processes causes regional increases (northern India) or decreases (Central Asia, China) in energy availability at the surface and top of the atmosphere. Despite these changes in net radiation, however, climate responses are due primarily to larger magnitude shifts in the Bowen ratio from sensible to latent heating. Irrigation impacts on temperature, precipitation, and other climate variables are regionally significant, even while other anthropogenic forcings (anthropogenic aerosols, greenhouse gases, etc.) dominate the long term climate evolution in the simulations. To better constrain the magnitude and uncertainties of irrigation-forced climate anomalies, irrigation should therefore be considered as another important anthropogenic climate forcing in the next generation of historical climate simulations and multi-model assessments. JF - Climate Dynamics AU - Cook, Benjamin I AU - Shukla, Sonali P AU - Puma, Michael J AU - Nazarenko, Larissa S AD - NASA Goddard Institute for Space Studies, 2880 Broadway, New York, NY, 10025, USA, benjamin.i.cook@nasa.gov Y1 - 2015/03// PY - 2015 DA - March 2015 SP - 1715 EP - 1730 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 44 IS - 5-6 SN - 0930-7575, 0930-7575 KW - Aqualine Abstracts; Pollution Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Historical account KW - Atmospheric pollution models KW - Rainfall KW - Bowen's ratio KW - ISW, India KW - Radiation KW - Seasonal variability KW - Middle East KW - North America KW - Atmospheric gases KW - Aerosols KW - MED, Western Mediterranean KW - Irrigation KW - Cloud Cover KW - Atmospheric circulation KW - Greenhouse effect KW - Cooling KW - Model Studies KW - Numerical simulations KW - General circulation models KW - Irrigation Water KW - Temperature trends KW - Greenhouse gases KW - Monsoons KW - Net radiation KW - Anthropogenic factors KW - Summer KW - Atmosphere KW - Air temperature KW - Climate models KW - Climates KW - Simulation KW - Precipitation KW - Cloud cover KW - Energy budget KW - Water cycle KW - Energy KW - China, People's Rep. KW - Q2 09243:Structure, mechanics and thermodynamics KW - AQ 00006:Sewage KW - P 8000:RADIATION KW - SW 0810:General KW - M2 551.58:Climatology (551.58) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1664195440?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Climate+Dynamics&rft.atitle=Irrigation+as+an+historical+climate+forcing&rft.au=Cook%2C+Benjamin+I%3BShukla%2C+Sonali+P%3BPuma%2C+Michael+J%3BNazarenko%2C+Larissa+S&rft.aulast=Cook&rft.aufirst=Benjamin&rft.date=2015-03-01&rft.volume=44&rft.issue=5-6&rft.spage=1715&rft.isbn=&rft.btitle=&rft.title=Climate+Dynamics&rft.issn=09307575&rft_id=info:doi/10.1007%2Fs00382-014-2204-7 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-03-01 N1 - Number of references - 49 N1 - Last updated - 2016-02-18 N1 - SubjectsTermNotLitGenreText - Aerosols; Atmospheric gases; Radiation; Irrigation; Anthropogenic factors; Greenhouse effect; Atmospheric circulation; Cloud cover; Monsoons; Net radiation; Atmospheric pollution models; Climate models; Bowen's ratio; Precipitation; Energy budget; Water cycle; Numerical simulations; General circulation models; Seasonal variability; Temperature trends; Historical account; Rainfall; Simulation; Summer; Atmosphere; Air temperature; Energy; Greenhouse gases; Climates; Cloud Cover; Irrigation Water; Cooling; Model Studies; North America; ISW, India; MED, Western Mediterranean; China, People's Rep.; Middle East DO - http://dx.doi.org/10.1007/s00382-014-2204-7 ER - TY - JOUR T1 - N- and O-heterocycles produced from the irradiation of benzene and naphthalene in H (sub 2) O/NH (sub 3) -containing ices AN - 1832626110; 726695-39 AB - Aromatic heterocyclic molecules are an important class of molecules of astrophysical and biological significance that include pyridine, pyrimidine, and their derivatives. Such compounds are believed to exist in interstellar and circumstellar environments, though they have never been observed in the gas phase. Regardless of their presence in the gas phase in space, numerous heterocycles have been reported in carbonaceous meteorites, which indicates that they are formed under astrophysical conditions. The experimental work described here shows that N- and O-heterocyclic molecules can form from the ultraviolet (UV) irradiation of the homocyclic aromatic molecules benzene (C (sub 6) H (sub 6) ) or naphthalene (C (sub 10) H (sub 8) ) mixed in ices containing H (sub 2) O and NH (sub 3) . This represents an alternative way to generate aromatic heterocycles to those considered before and may have important implications for astrochemistry and astrobiology. Copyright (Copyright) 2015. The American Astronomical Society. All rights reserved. JF - The Astrophysical Journal AU - Materese, Christopher K AU - Nuevo, Michel AU - Sandford, Scott A Y1 - 2015/02/20/ PY - 2015 DA - 2015 Feb 20 EP - Paper no. 116 PB - IOP Publishing for American Astronomical Society, Bristol VL - 800 IS - 2 SN - 0004-637X, 0004-637X KW - ammonium KW - irradiation KW - stony meteorites KW - oxygen KW - heterocyclic compounds KW - nitrogen KW - meteorites KW - electromagnetic radiation KW - ice KW - molecular dynamics KW - chondrites KW - water KW - circumstellar medium KW - experimental studies KW - gaseous phase KW - naphthalene KW - interstellar medium KW - cosmochemistry KW - carbonaceous chondrites KW - benzene KW - ultraviolet radiation KW - organic compounds KW - hydrocarbons KW - polycyclic aromatic hydrocarbons KW - aromatic hydrocarbons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832626110?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Astrophysical+Journal&rft.atitle=N-+and+O-heterocycles+produced+from+the+irradiation+of+benzene+and+naphthalene+in+H+%28sub+2%29+O%2FNH+%28sub+3%29+-containing+ices&rft.au=Materese%2C+Christopher+K%3BNuevo%2C+Michel%3BSandford%2C+Scott+A&rft.aulast=Materese&rft.aufirst=Christopher&rft.date=2015-02-20&rft.volume=800&rft.issue=2&rft.spage=&rft.isbn=&rft.btitle=&rft.title=The+Astrophysical+Journal&rft.issn=0004637X&rft_id=info:doi/10.1088%2F0004-637X%2F800%2F2%2F116 L2 - http://iopscience.iop.org/0004-637X LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data supplied by IOP Publishing Ltd., London, United Kingdom N1 - Number of references - 44 N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Includes appendices N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - ammonium; aromatic hydrocarbons; benzene; carbonaceous chondrites; chondrites; circumstellar medium; cosmochemistry; electromagnetic radiation; experimental studies; gaseous phase; heterocyclic compounds; hydrocarbons; ice; interstellar medium; irradiation; meteorites; molecular dynamics; naphthalene; nitrogen; organic compounds; oxygen; polycyclic aromatic hydrocarbons; stony meteorites; ultraviolet radiation; water DO - http://dx.doi.org/10.1088/0004-637X/800/2/116 ER - TY - JOUR T1 - Extending the long-term record of volcanic SO (sub 2) emissions with the Ozone Mapping and Profiler Suite nadir mapper AN - 1707522007; 2015-084204 AB - Uninterrupted, global space-based monitoring of volcanic sulfur dioxide (SO (sub 2) ) emissions is critical for climate modeling and aviation hazard mitigation. We report the first volcanic SO (sub 2) measurements using ultraviolet (UV) Ozone Mapping and Profiler Suite (OMPS) nadir mapper data. OMPS was launched on the Suomi National Polar-orbiting Partnership satellite in October 2011. We demonstrate the sensitivity of OMPS SO (sub 2) measurements by quantifying SO (sub 2) emissions from the modest eruption of Paluweh volcano (Indonesia) in February 2013 and tracking the dispersion of the volcanic SO (sub 2) cloud. The OMPS SO (sub 2) retrievals are validated using Ozone Monitoring Instrument and Atmospheric Infrared Sounder measurements. The results confirm the ability of OMPS to extend the long-term record of volcanic SO (sub 2) emissions based on UV satellite observations. We also show that the Paluweh volcanic SO (sub 2) reached the lower stratosphere, further demonstrating the impact of small tropical volcanic eruptions on stratospheric aerosol optical depth and climate. Abstract Copyright (2015), American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Carn, S A AU - Yang, K AU - Prata, A J AU - Krotkov, Nickolay A Y1 - 2015/02/16/ PY - 2015 DA - 2015 Feb 16 SP - 925 EP - 932 PB - American Geophysical Union, Washington, DC VL - 42 IS - 3 SN - 0094-8276, 0094-8276 KW - sulfur dioxide KW - risk management KW - monitoring KW - Far East KW - geologic hazards KW - Indonesia KW - atmosphere KW - Paluweh KW - climate change KW - ozone KW - safety KW - volcanism KW - eruptions KW - aircraft KW - natural hazards KW - volcanoes KW - risk assessment KW - chemical composition KW - Asia KW - instruments KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1707522007?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=Extending+the+long-term+record+of+volcanic+SO+%28sub+2%29+emissions+with+the+Ozone+Mapping+and+Profiler+Suite+nadir+mapper&rft.au=Carn%2C+S+A%3BYang%2C+K%3BPrata%2C+A+J%3BKrotkov%2C+Nickolay+A&rft.aulast=Carn&rft.aufirst=S&rft.date=2015-02-16&rft.volume=42&rft.issue=3&rft.spage=925&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2014GL062437 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 37 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2015-08-27 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - aircraft; Asia; atmosphere; chemical composition; climate change; eruptions; Far East; geologic hazards; Indonesia; instruments; monitoring; natural hazards; ozone; Paluweh; risk assessment; risk management; safety; sulfur dioxide; volcanism; volcanoes DO - http://dx.doi.org/10.1002/2014GL062437 ER - TY - JOUR T1 - The effect of stratospheric sulfur from Mount Pinatubo on tropospheric oxidizing capacity and methane AN - 1696872910; 2015-069574 AB - The eruption of Mount Pinatubo in 1991 injected a large amount of SO (sub 2) into the stratosphere, which formed sulfate aerosols. Increased scattering and absorption of UV radiation by the enhanced stratospheric SO (sub 2) and aerosols decreased the amount of UV radiation reaching the troposphere, causing changes in tropospheric photochemistry. These changes affected the oxidizing capacity of the atmosphere and the removal rate of CH (sub 4) in the years following the eruption. We use the three-dimensional chemistry transport model TM5 coupled to the aerosol microphysics module M7 to simulate the evolution of SO (sub 2) and sulfate aerosols from the Pinatubo eruption. Their effect on tropospheric photolysis frequencies and concentrations of OH and CH (sub 4) is quantified for the first time. We find that UV attenuation by stratospheric sulfur decreased the photolysis frequencies of both ozone and NO (sub 2) by about 2% globally, decreasing global OH concentrations by a similar amount in the first 2 years after the eruption. SO (sub 2) absorption mainly affects OH primary production by ozone photolysis, while aerosol scattering also alters OH recycling. The effect of stratospheric sulfur on global OH and CH (sub 4) is dominated by the effect of aerosol extinction, while SO (sub 2) absorption contributes by 12.5% to the overall effect in the first year after the eruption. The reduction in OH concentrations causes an increase in the CH (sub 4) growth rate of 4 and 2 ppb/yr in the first and second years after the eruption, respectively, contributing 11 Tg to the 27 Tg observed CH (sub 4) burden change in late 1991 and early 1992. Abstract Copyright (2014), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Atmospheres AU - Banda, Narcisa AU - Krol, Maarten AU - Noije, Twan AU - Weele, Michiel AU - Williams, Jason E AU - Le Sager, Philippe AU - Niemeier, Ulrike AU - Thomason, Larry AU - Rockmann, Thomas Y1 - 2015/02/16/ PY - 2015 DA - 2015 Feb 16 SP - 1202 EP - 1220 PB - Blackwell Wiley for American Geophysical Union, Washington, DC VL - 120 IS - 3 SN - 2169-897X, 2169-897X KW - sulfur dioxide KW - Luzon KW - methane KW - Far East KW - sulfates KW - aliphatic hydrocarbons KW - atmosphere KW - troposphere KW - alkanes KW - environmental effects KW - organic compounds KW - stratosphere KW - Mount Pinatubo KW - chemical reactions KW - Philippine Islands KW - volcanism KW - eruptions KW - hydrocarbons KW - volcanoes KW - aerosols KW - chemical composition KW - Asia KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696872910?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=The+effect+of+stratospheric+sulfur+from+Mount+Pinatubo+on+tropospheric+oxidizing+capacity+and+methane&rft.au=Banda%2C+Narcisa%3BKrol%2C+Maarten%3BNoije%2C+Twan%3BWeele%2C+Michiel%3BWilliams%2C+Jason+E%3BLe+Sager%2C+Philippe%3BNiemeier%2C+Ulrike%3BThomason%2C+Larry%3BRockmann%2C+Thomas&rft.aulast=Banda&rft.aufirst=Narcisa&rft.date=2015-02-16&rft.volume=120&rft.issue=3&rft.spage=1202&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2014JD022137 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-8996 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 36 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2015-07-17 N1 - SubjectsTermNotLitGenreText - aerosols; aliphatic hydrocarbons; alkanes; Asia; atmosphere; chemical composition; chemical reactions; environmental effects; eruptions; Far East; hydrocarbons; Luzon; methane; Mount Pinatubo; organic compounds; Philippine Islands; stratosphere; sulfates; sulfur dioxide; troposphere; volcanism; volcanoes DO - http://dx.doi.org/10.1002/2014JD022137 ER - TY - JOUR T1 - Reduced partition function ratios of iron and oxygen in goethite AN - 1673366798; 2015-034205 AB - First-principles calculations based on the density functional theory (DFT) with or without the addition of a Hubbard U correction, are performed on goethite in order to determine the iron and oxygen reduced partition function ratios (beta -factors). The calculated iron phonon density of states (pDOS), force constant and beta -factor are compared with reevaluated experimental beta -factors obtained from Nuclear Resonant Inelastic X-ray Scattering (NRIXS) measurements. The reappraisal of old experimental data is motivated by the erroneous previous interpretation of the low- and high-energy ends of the NRIXS spectrum of goethite and jarosite samples (Dauphas et al., 2012). Here the NRIXS data are analyzed using the SciPhon software that corrects for non-constant baseline. New NRIXS measurements also demonstrate the reproducibility of the results. Unlike for hematite and pyrite, a significant discrepancy remains between DFT, NRIXS and the existing Mossbauer-derived data. Calculations suggest a slight overestimation of the NRIXS signal possibly related to the baseline definition. The intrinsic features of the samples studied by NRIXS and Mossbauer spectroscopy may also contribute to the discrepancy (e.g., internal structural and/or chemical defects, microstructure, surface contribution). As for oxygen, DFT results indicate that goethite and hematite have similar beta -factors, which suggests almost no fractionation between the two minerals at equilibrium. Abstract Copyright (2015) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Blanchard, M AU - Dauphas, N AU - Hu, M Y AU - Roskosz, M AU - Alp, E E AU - Golden, D C AU - Sio, C K AU - Tissot, F L H AU - Zhao, J AU - Gao, L AU - Morris, R V AU - Fornace, M AU - Floris, A AU - Lazzeri, M AU - Balan, E Y1 - 2015/02/15/ PY - 2015 DA - 2015 Feb 15 SP - 19 EP - 33 PB - Elsevier, New York, NY VL - 151 SN - 0016-7037, 0016-7037 KW - isotope fractionation KW - reproducibility KW - oxygen KW - goethite KW - isotopes KW - data processing KW - Hubbard correction KW - stable isotopes KW - iron KW - partitioning KW - phase equilibria KW - oxides KW - spectra KW - Mossbauer spectra KW - nuclear resonant ionelastic X-ray scattering KW - experimental studies KW - sulfates KW - density functional theory KW - isotope ratios KW - O-18/O-16 KW - measurement KW - jarosite KW - NRIXS KW - metals KW - mathematical methods KW - pyrite KW - crystal chemistry KW - sulfides KW - chemical fractionation KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1673366798?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geochimica+et+Cosmochimica+Acta&rft.atitle=Reduced+partition+function+ratios+of+iron+and+oxygen+in+goethite&rft.au=Blanchard%2C+M%3BDauphas%2C+N%3BHu%2C+M+Y%3BRoskosz%2C+M%3BAlp%2C+E+E%3BGolden%2C+D+C%3BSio%2C+C+K%3BTissot%2C+F+L+H%3BZhao%2C+J%3BGao%2C+L%3BMorris%2C+R+V%3BFornace%2C+M%3BFloris%2C+A%3BLazzeri%2C+M%3BBalan%2C+E&rft.aulast=Blanchard&rft.aufirst=M&rft.date=2015-02-15&rft.volume=151&rft.issue=&rft.spage=19&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2014.12.006 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2015-01-01 N1 - Number of references - 59 N1 - PubXState - NY N1 - Document feature - illus. incl. 7 tables N1 - Last updated - 2015-04-16 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - chemical fractionation; crystal chemistry; data processing; density functional theory; experimental studies; goethite; Hubbard correction; iron; isotope fractionation; isotope ratios; isotopes; jarosite; mathematical methods; measurement; metals; Mossbauer spectra; NRIXS; nuclear resonant ionelastic X-ray scattering; O-18/O-16; oxides; oxygen; partitioning; phase equilibria; pyrite; reproducibility; spectra; stable isotopes; sulfates; sulfides DO - http://dx.doi.org/10.1016/j.gca.2014.12.006 ER - TY - CPAPER T1 - Advances in Imaging Earth from Space T2 - 2015 Annual Meeting of the American Association for the Advancement of Science (AAAS 2015) AN - 1658699570; 6338910 JF - 2015 Annual Meeting of the American Association for the Advancement of Science (AAAS 2015) AU - Kaye, Jack Y1 - 2015/02/12/ PY - 2015 DA - 2015 Feb 12 KW - Imaging techniques UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658699570?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2015%29&rft.atitle=Advances+in+Imaging+Earth+from+Space&rft.au=Kaye%2C+Jack&rft.aulast=Kaye&rft.aufirst=Jack&rft.date=2015-02-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2015%29&rft.issn=&rft_id=info:doi/ L2 - https://aaas.confex.com/aaas/2015/webprogram/meeting2015-02-11.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Earth: A Dynamic Planet T2 - 2015 Annual Meeting of the American Association for the Advancement of Science (AAAS 2015) AN - 1658699375; 6338651 JF - 2015 Annual Meeting of the American Association for the Advancement of Science (AAAS 2015) AU - Mitchell, Horace Y1 - 2015/02/12/ PY - 2015 DA - 2015 Feb 12 KW - Information sciences KW - Imaging UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658699375?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2015%29&rft.atitle=Earth%3A+A+Dynamic+Planet&rft.au=Mitchell%2C+Horace&rft.aulast=Mitchell&rft.aufirst=Horace&rft.date=2015-02-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2015%29&rft.issn=&rft_id=info:doi/ L2 - https://aaas.confex.com/aaas/2015/webprogram/meeting2015-02-11.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Toward a Reliable Value for eta-Earth T2 - 2015 Annual Meeting of the American Association for the Advancement of Science (AAAS 2015) AN - 1658699234; 6338483 JF - 2015 Annual Meeting of the American Association for the Advancement of Science (AAAS 2015) AU - Batalha, Natalie Y1 - 2015/02/12/ PY - 2015 DA - 2015 Feb 12 KW - Information sciences KW - Imaging UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658699234?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2015%29&rft.atitle=Toward+a+Reliable+Value+for+eta-Earth&rft.au=Batalha%2C+Natalie&rft.aulast=Batalha&rft.aufirst=Natalie&rft.date=2015-02-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2015%29&rft.issn=&rft_id=info:doi/ L2 - https://aaas.confex.com/aaas/2015/webprogram/meeting2015-02-11.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Cassini Science Highlights: Surprises in the Saturn System T2 - 2015 Annual Meeting of the American Association for the Advancement of Science (AAAS 2015) AN - 1658698891; 6338723 JF - 2015 Annual Meeting of the American Association for the Advancement of Science (AAAS 2015) AU - Spilker, Linda Y1 - 2015/02/12/ PY - 2015 DA - 2015 Feb 12 KW - Information sciences KW - Imaging UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658698891?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2015%29&rft.atitle=Cassini+Science+Highlights%3A+Surprises+in+the+Saturn+System&rft.au=Spilker%2C+Linda&rft.aulast=Spilker&rft.aufirst=Linda&rft.date=2015-02-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2015%29&rft.issn=&rft_id=info:doi/ L2 - https://aaas.confex.com/aaas/2015/webprogram/meeting2015-02-11.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Results From Exoplanet Surveys T2 - 2015 Annual Meeting of the American Association for the Advancement of Science (AAAS 2015) AN - 1658698368; 6338479 JF - 2015 Annual Meeting of the American Association for the Advancement of Science (AAAS 2015) AU - Borucki, William Y1 - 2015/02/12/ PY - 2015 DA - 2015 Feb 12 KW - Information sciences KW - Imaging UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658698368?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2015%29&rft.atitle=Results+From+Exoplanet+Surveys&rft.au=Borucki%2C+William&rft.aulast=Borucki&rft.aufirst=William&rft.date=2015-02-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2015%29&rft.issn=&rft_id=info:doi/ L2 - https://aaas.confex.com/aaas/2015/webprogram/meeting2015-02-11.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - AgMIP Global and Regional Assessments: Methods and Results T2 - 2015 Annual Meeting of the American Association for the Advancement of Science (AAAS 2015) AN - 1658697430; 6338510 JF - 2015 Annual Meeting of the American Association for the Advancement of Science (AAAS 2015) AU - Rosenzweig, Cynthia Y1 - 2015/02/12/ PY - 2015 DA - 2015 Feb 12 KW - Information sciences KW - Imaging UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658697430?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2015%29&rft.atitle=AgMIP+Global+and+Regional+Assessments%3A+Methods+and+Results&rft.au=Rosenzweig%2C+Cynthia&rft.aulast=Rosenzweig&rft.aufirst=Cynthia&rft.date=2015-02-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2015%29&rft.issn=&rft_id=info:doi/ L2 - https://aaas.confex.com/aaas/2015/webprogram/meeting2015-02-11.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Observing, Validating, and Verifying Albedo Modification T2 - 2015 Annual Meeting of the American Association for the Advancement of Science (AAAS 2015) AN - 1658697292; 6338763 JF - 2015 Annual Meeting of the American Association for the Advancement of Science (AAAS 2015) AU - Duren, Riley Y1 - 2015/02/12/ PY - 2015 DA - 2015 Feb 12 KW - Albedo UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658697292?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2015%29&rft.atitle=Observing%2C+Validating%2C+and+Verifying+Albedo+Modification&rft.au=Duren%2C+Riley&rft.aulast=Duren&rft.aufirst=Riley&rft.date=2015-02-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2015%29&rft.issn=&rft_id=info:doi/ L2 - https://aaas.confex.com/aaas/2015/webprogram/meeting2015-02-11.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - The Megacities Carbon Project T2 - 2015 Annual Meeting of the American Association for the Advancement of Science (AAAS 2015) AN - 1658697029; 6338933 JF - 2015 Annual Meeting of the American Association for the Advancement of Science (AAAS 2015) AU - Duren, Riley Y1 - 2015/02/12/ PY - 2015 DA - 2015 Feb 12 KW - Carbon UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658697029?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2015%29&rft.atitle=The+Megacities+Carbon+Project&rft.au=Duren%2C+Riley&rft.aulast=Duren&rft.aufirst=Riley&rft.date=2015-02-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2015%29&rft.issn=&rft_id=info:doi/ L2 - https://aaas.confex.com/aaas/2015/webprogram/meeting2015-02-11.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - JOUR T1 - Direct detection of complex organic products in ultraviolet (Lyalpha ) and electron-irradiated astrophysical and cometary ice analogs using two-step laser ablation and ionization mass spectrometry AN - 1832625347; 726694-66 AB - As discovery of complex molecules and ions in our solar system and the interstellar medium has proliferated, several groups have turned to laboratory experiments in an effort to simulate and understand these chemical processes. So far only infrared (IR) and ultraviolet (UV) spectroscopy has been able to directly probe these reactions in ices in their native, low-temperature states. Here we report for the first time results using a complementary technique that harnesses two-step two-color laser ablation and ionization to measure mass spectra of energetically processed astrophysical and cometary ice analogs directly without warming the ices-a method for hands-off in situ ice analysis. Electron bombardment and UV irradiation of H (sub 2) O, CH (sub 3) OH, and NH (sub 3) ices at 5 K and 70 K led to complex irradiation products, including HCO, CH (sub 3) CO, formamide, acetamide, methyl formate, and HCN. Many of these species, whose assignment was also strengthened by isotope labeling studies and correlate with IR-based spectroscopic studies of similar irradiated ices, are important ingredients for the building blocks of life. Some of them have been detected previously via astronomical observations in the interstellar medium and in cometary comae. Other species such as CH (sub 3) CO (acetyl) are yet to be detected in astrophysical ices or interstellar medium. Our studies suggest that electron and UV photon processing of astrophysical ice analogs leads to extensive chemistry even in the coldest reaches of space, and lend support to the theory of comet-impact-induced delivery of complex organics to the inner solar system. Copyright (Copyright) 2015. The American Astronomical Society. All rights reserved. JF - The Astrophysical Journal AU - Henderson, Bryana L AU - Gudipati, Murthy S Y1 - 2015/02/10/ PY - 2015 DA - 2015 Feb 10 EP - Paper no. 66 PB - IOP Publishing for American Astronomical Society, Bristol VL - 800 IS - 1 SN - 0004-637X, 0004-637X KW - ultraviolet radiaiton KW - ammonium KW - irradiation KW - laser methods KW - acetamide KW - mass spectra KW - ionization mass spectroscopy KW - simulation KW - ions KW - ionization KW - temperature KW - nitrogen KW - methly formate KW - laboratory studies KW - ice KW - carbon KW - alcohols KW - hydrogen cyanide KW - spectra KW - electrons KW - water KW - solar system KW - experimental studies KW - in situ KW - formamide KW - photochemistry KW - laser ablation KW - interstellar medium KW - cosmochemistry KW - comae KW - methanol KW - organic compounds KW - detection KW - comets KW - natural analogs KW - low temperature KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832625347?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Astrophysical+Journal&rft.atitle=Direct+detection+of+complex+organic+products+in+ultraviolet+%28Lyalpha+%29+and+electron-irradiated+astrophysical+and+cometary+ice+analogs+using+two-step+laser+ablation+and+ionization+mass+spectrometry&rft.au=Henderson%2C+Bryana+L%3BGudipati%2C+Murthy+S&rft.aulast=Henderson&rft.aufirst=Bryana&rft.date=2015-02-10&rft.volume=800&rft.issue=1&rft.spage=&rft.isbn=&rft.btitle=&rft.title=The+Astrophysical+Journal&rft.issn=0004637X&rft_id=info:doi/10.1088%2F0004-637X%2F800%2F1%2F66 L2 - http://iopscience.iop.org/0004-637X LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data supplied by IOP Publishing Ltd., London, United Kingdom N1 - Number of references - 85 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - acetamide; alcohols; ammonium; carbon; comae; comets; cosmochemistry; detection; electrons; experimental studies; formamide; hydrogen cyanide; ice; in situ; interstellar medium; ionization; ionization mass spectroscopy; ions; irradiation; laboratory studies; laser ablation; laser methods; low temperature; mass spectra; methanol; methly formate; natural analogs; nitrogen; organic compounds; photochemistry; simulation; solar system; spectra; temperature; ultraviolet radiaiton; water DO - http://dx.doi.org/10.1088/0004-637X/800/1/66 ER - TY - JOUR T1 - Next-generation angular distribution models for top-of-atmosphere radiative flux calculation from CERES instruments: methodology AN - 1660410278; PQ0001093382 AB - The top-of-atmosphere (TOA) radiative fluxes are critical components to advancing our understanding of the Earth's radiative energy balance, radiative effects of clouds and aerosols, and climate feedback. The Clouds and the Earth's Radiant Energy System (CERES) instruments provide broadband shortwave and longwave radiance measurements. These radiances are converted to fluxes by using scene-type-dependent angular distribution models (ADMs). This paper describes the next-generation ADMs that are developed for Terra and Aqua using all available CERES rotating azimuth plane radiance measurements. Coincident cloud and aerosol retrievals, and radiance measurements from the Moderate Resolution Imaging Spectroradiometer (MODIS), and meteorological parameters from Goddard Earth Observing System (GEOS) data assimilation version 5.4.1 are used to define scene type. CERES radiance measurements are stratified by scene type and by other parameters that are important for determining the anisotropy of the given scene type. Anisotropic factors are then defined either for discrete intervals of relevant parameters or as a continuous functions of combined parameters, depending on the scene type. Significant differences between the ADMs described in this paper and the existing ADMs are over clear-sky scene types and polar scene types. Over clear ocean, we developed a set of shortwave (SW) ADMs that explicitly account for aerosols. Over clear land, the SW ADMs are developed for every 1 degree latitude x 1 degree longitude region for every calendar month using a kernel-based bidirectional reflectance model. Over clear Antarctic scenes, SW ADMs are developed by accounting the effects of sastrugi on anisotropy. Over sea ice, a sea-ice brightness index is used to classify the scene type. Under cloudy conditions over all surface types, the longwave (LW) and window (WN) ADMs are developed by combining surface and cloud-top temperature, surface and cloud emissivity, cloud fraction, and precipitable water. Compared to the existing ADMs, the new ADMs change the monthly mean instantaneous fluxes by up to 5 W m super(-2) on a regional scale of 1 degree latitude x 1 degree longitude, but the flux changes are less than 0.5 W m super(-2) on a global scale. JF - Atmospheric Measurement Techniques AU - Su, W AU - Corbett, J AU - Eitzen, Z AU - Liang, L AD - MS420, NASA Langley Research Center, Hampton, Virginia, USA Y1 - 2015/02/05/ PY - 2015 DA - 2015 Feb 05 SP - 611 EP - 632 PB - Copernicus VL - 8 IS - 2 KW - Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Angular distribution KW - Reflectance KW - Data assimilation KW - Emissivity KW - Radiance KW - Sastrugi KW - Asteroids KW - Meteorological parameters KW - Sea Ice KW - MODIS (Moderate Resolution Imaging Spectrometer) KW - Aerosols KW - Climate models KW - Anisotropy KW - Aerosols-cloud condensation nuclei relationships KW - Climates KW - Climate KW - Aerosols-cloud relationships KW - Bidirectional reflectance KW - Accounting KW - Model Studies KW - Clouds KW - Sea ice KW - Energy balance KW - Precipitable water KW - Oceans KW - Fluctuations KW - Q2 09243:Structure, mechanics and thermodynamics KW - AQ 00001:Water Resources and Supplies KW - M2 551.326:Floating Ice (551.326) KW - SW 0820:Snow, ice and frost UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660410278?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Atmospheric+Measurement+Techniques&rft.atitle=Next-generation+angular+distribution+models+for+top-of-atmosphere+radiative+flux+calculation+from+CERES+instruments%3A+methodology&rft.au=Su%2C+W%3BCorbett%2C+J%3BEitzen%2C+Z%3BLiang%2C+L&rft.aulast=Su&rft.aufirst=W&rft.date=2015-02-05&rft.volume=8&rft.issue=2&rft.spage=611&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Measurement+Techniques&rft.issn=1867-1381&rft_id=info:doi/10.5194%2Famt-8-611-2015 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-03-01 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Clouds; Emissivity; Angular distribution; Aerosols; Radiance; Reflectance; Anisotropy; Energy balance; Climate; Climate models; Aerosols-cloud condensation nuclei relationships; Aerosols-cloud relationships; Bidirectional reflectance; Data assimilation; Sea ice; Sastrugi; Meteorological parameters; Asteroids; Precipitable water; MODIS (Moderate Resolution Imaging Spectrometer); Oceans; Sea Ice; Climates; Accounting; Fluctuations; Model Studies DO - http://dx.doi.org/10.5194/amt-8-611-2015 ER - TY - JOUR T1 - A new airborne laser-induced fluorescence instrument for in situ detection of formaldehyde throughout the troposphere and lower stratosphere AN - 1660402552; PQ0001093377 AB - The NASA In Situ Airborne Formaldehyde (ISAF) instrument is a high-performance laser-based detector for gas-phase formaldehyde (HCHO). ISAF uses rotational-state specific laser excitation at 353 nm for laser-induced fluorescence (LIF) detection of HCHO. A number of features make ISAF ideal for airborne deployment, including (1) a compact, low-maintenance fiber laser, (2) a single-pass design for stable signal response, (3) a straightforward inlet design, and (4) a stand-alone data acquisition system. A full description of the instrument design is given, along with detailed performance characteristics. The accuracy of reported mixing ratios is plus or minus 10% based on calibration against IR and UV absorption of a primary HCHO standard. Precision at 1 Hz is typically better than 20% above 100 pptv, with uncertainty in the signal background contributing most to variability at low mixing ratios. The 1 Hz detection limit for a signal / noise ratio of 2 is 36 pptv for 10 mW of laser power, and the e fold time response at typical sample flow rates is 0.19 s. ISAF has already flown on several field missions and platforms with excellent results. JF - Atmospheric Measurement Techniques AU - Cazorla, M AU - Wolfe, G M AU - Bailey, S A AU - Swanson, A K AU - Arkinson, H L AU - Hanisco, T F AD - Atmospheric Chemistry and Dynamics Lab, NASA Goddard Space Flight Center, Greenbelt, MD, USA Y1 - 2015/02/03/ PY - 2015 DA - 2015 Feb 03 SP - 541 EP - 552 PB - Copernicus VL - 8 IS - 2 KW - Pollution Abstracts; Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Variability KW - Acoustic waves KW - Formaldehyde KW - Mixing KW - Flow rates KW - Calibrations KW - Ultraviolet radiation KW - Absorption KW - Mixing ratio KW - Coastal inlets KW - Noise pollution KW - Data acquisition KW - Fluorescence KW - Inlets KW - Noise levels KW - Troposphere KW - Stratosphere KW - Fibers KW - Detection Limits KW - Sound absorption KW - Standards KW - Lasers KW - Q2 09243:Structure, mechanics and thermodynamics KW - AQ 00001:Water Resources and Supplies KW - SW 5010:Network design KW - P 0000:AIR POLLUTION KW - M2 551.510.53:Stratosphere (551.510.53) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660402552?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Atmospheric+Measurement+Techniques&rft.atitle=A+new+airborne+laser-induced+fluorescence+instrument+for+in+situ+detection+of+formaldehyde+throughout+the+troposphere+and+lower+stratosphere&rft.au=Cazorla%2C+M%3BWolfe%2C+G+M%3BBailey%2C+S+A%3BSwanson%2C+A+K%3BArkinson%2C+H+L%3BHanisco%2C+T+F&rft.aulast=Cazorla&rft.aufirst=M&rft.date=2015-02-03&rft.volume=8&rft.issue=2&rft.spage=541&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Measurement+Techniques&rft.issn=1867-1381&rft_id=info:doi/10.5194%2Famt-8-541-2015 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-03-01 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Fluorescence; Sound absorption; Ultraviolet radiation; Troposphere; Coastal inlets; Mixing ratio; Stratosphere; Data acquisition; Acoustic waves; Lasers; Noise pollution; Fibers; Noise levels; Absorption; Formaldehyde; Flow rates; Variability; Calibrations; Detection Limits; Inlets; Standards; Mixing DO - http://dx.doi.org/10.5194/amt-8-541-2015 ER - TY - JOUR T1 - An ancient extrasolar system with five sub-earth-size planets AN - 1832623121; 726693-62 AB - The chemical composition of stars hosting small exoplanets (with radii less than four Earth radii) appears to be more diverse than that of gas-giant hosts, which tend to be metal-rich. This implies that small, including Earth-size, planets may have readily formed at earlier epochs in the universe's history when metals were more scarce. We report Kepler spacecraft observations of Kepler-444, a metal-poor Sun-like star from the old population of the Galactic thick disk and the host to a compact system of five transiting planets with sizes between those of Mercury and Venus. We validate this system as a true five-planet system orbiting the target star and provide a detailed characterization of its planetary and orbital parameters based on an analysis of the transit photometry. Kepler-444 is the densest star with detected solar-like oscillations. We use asteroseismology to directly measure a precise age of 11.2 + or - 1.0 Gyr for the host star, indicating that Kepler-444 formed when the universe was less than 20% of its current age and making it the oldest known system of terrestrial-size planets. We thus show that Earth-size planets have formed throughout most of the universe's 13.8 billion year history, leaving open the possibility for the existence of ancient life in the Galaxy. The age of Kepler-444 not only suggests that thick-disk stars were among the hosts to the first Galactic planets, but may also help to pinpoint the beginning of the era of planet formation. Copyright (Copyright) 2015. The American Astronomical Society. All rights reserved. JF - The Astrophysical Journal AU - Campante, T L AU - Barclay, T AU - Swift, J J AU - Huber, D AU - Adibekyan, V Zh AU - Cochran, W AU - Burke, C J AU - Isaacson, H AU - Quintana, E V AU - Davies, G R AU - Silva Aguirre, V AU - Ragozzine, D AU - Riddle, R AU - Baranec, C AU - Basu, S AU - Chaplin, W J AU - Christensen-Dalsgaard, J AU - Metcalfe, T S AU - Bedding, T R AU - Handberg, R AU - Stello, D AU - Brewer, J M AU - Hekker, S AU - Karoff, C AU - Kolbl, R AU - Law, N M AU - Lundkvist, M AU - Miglio, A AU - Rowe, J F AU - Santos, N C AU - Van Laerhoven, C AU - Arentoft, T AU - Elsworth, Y P AU - Fischer, D A AU - Kawaler, S D AU - Kjeldsen, H AU - Lund, M N AU - Marcy, G W AU - Sousa, S G AU - Sozzetti, A AU - White, T R Y1 - 2015/02/01/ PY - 2015 DA - 2015 Feb 01 EP - Paper no. 170 PB - IOP Publishing for American Astronomical Society, Bristol VL - 799 IS - 2 SN - 0004-637X, 0004-637X KW - transit photometry KW - extrasolar planets KW - orbits KW - optical spectra KW - size KW - terrestrial planets KW - planets KW - photometry KW - oscillations KW - stars KW - spectra KW - planetary systems KW - chemical composition KW - Kepler 444 star KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832623121?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Astrophysical+Journal&rft.atitle=An+ancient+extrasolar+system+with+five+sub-earth-size+planets&rft.au=Campante%2C+T+L%3BBarclay%2C+T%3BSwift%2C+J+J%3BHuber%2C+D%3BAdibekyan%2C+V+Zh%3BCochran%2C+W%3BBurke%2C+C+J%3BIsaacson%2C+H%3BQuintana%2C+E+V%3BDavies%2C+G+R%3BSilva+Aguirre%2C+V%3BRagozzine%2C+D%3BRiddle%2C+R%3BBaranec%2C+C%3BBasu%2C+S%3BChaplin%2C+W+J%3BChristensen-Dalsgaard%2C+J%3BMetcalfe%2C+T+S%3BBedding%2C+T+R%3BHandberg%2C+R%3BStello%2C+D%3BBrewer%2C+J+M%3BHekker%2C+S%3BKaroff%2C+C%3BKolbl%2C+R%3BLaw%2C+N+M%3BLundkvist%2C+M%3BMiglio%2C+A%3BRowe%2C+J+F%3BSantos%2C+N+C%3BVan+Laerhoven%2C+C%3BArentoft%2C+T%3BElsworth%2C+Y+P%3BFischer%2C+D+A%3BKawaler%2C+S+D%3BKjeldsen%2C+H%3BLund%2C+M+N%3BMarcy%2C+G+W%3BSousa%2C+S+G%3BSozzetti%2C+A%3BWhite%2C+T+R&rft.aulast=Campante&rft.aufirst=T&rft.date=2015-02-01&rft.volume=799&rft.issue=2&rft.spage=&rft.isbn=&rft.btitle=&rft.title=The+Astrophysical+Journal&rft.issn=0004637X&rft_id=info:doi/10.1088%2F0004-637X%2F799%2F2%2F170 L2 - http://iopscience.iop.org/0004-637X LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data supplied by IOP Publishing Ltd., London, United Kingdom N1 - Number of references - 137 N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - chemical composition; extrasolar planets; Kepler 444 star; optical spectra; orbits; oscillations; photometry; planetary systems; planets; size; spectra; stars; terrestrial planets; transit photometry DO - http://dx.doi.org/10.1088/0004-637X/799/2/170 ER - TY - JOUR T1 - Chlorophyll variability in the oligotrophic gyres: mechanisms, seasonality and trends AN - 1722182098; PQ0002050408 AB - A 16-year analysis of trends and seasonal patterns was conducted for the 5 subtropical ocean gyres using chlorophyll-a (Chl-a) retrievals from ocean color satellite data, sea surface temperature (SST) obtained from optimally interpolated Advanced Very High Resolution Radiometer (AVHRR) data, and sea-level anomaly (SLA) from Aviso multi-sensor altimetry data. Trend analysis was also performed on mixed-layer data derived from gridded temperature and salinity profiles from the Simple Ocean Data Assimilation (SODA)model. On a seasonal basis, Chl-a concentrations increase when the MLD approaches or is deeper than the nutricline depth, in agreement with the concept that vertical mixingis the major driving mechanism for phytoplankton photosynthesis in the interior of the gyres. The combination of surface warming trends and bio-mass reduction over the16-year period has the potential to reduce atmospheric CO[sub 2] uptake by the gyres and therefore influence the global carboncycle. JF - Frontiers in Marine Science AU - Signorini, Sergio R AU - Franz, Bryan A AU - McClain, Charles R AD - Science Applications International Corp., Washington, DC, USA, sergio.signorini@nasa.gov Y1 - 2015/02// PY - 2015 DA - February 2015 SP - 1 EP - 11 PB - Frontiers Research Foundation, P O Box 110 1015 Lausanne Switzerland VL - 2 KW - Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources KW - sub-topical gyres KW - ocean deserts KW - long-term trends KW - changes in productivity KW - driving mechanisms KW - Temperature effects KW - Seasonality KW - Radiometers KW - Marine KW - Chlorophylls KW - Gyres KW - Phytoplankton KW - Salinity profiles KW - Altimetry KW - O 1070:Ecology/Community Studies KW - Q1 08563:Fishing gear and methods KW - Q5 08502:Methods and instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1722182098?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Frontiers+in+Marine+Science&rft.atitle=Chlorophyll+variability+in+the+oligotrophic+gyres%3A+mechanisms%2C+seasonality+and+trends&rft.au=Signorini%2C+Sergio+R%3BFranz%2C+Bryan+A%3BMcClain%2C+Charles+R&rft.aulast=Signorini&rft.aufirst=Sergio&rft.date=2015-02-01&rft.volume=2&rft.issue=&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Frontiers+in+Marine+Science&rft.issn=2296-7745&rft_id=info:doi/10.3389%2Ffmars.2015.00001 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-10-01 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Radiometers; Seasonality; Temperature effects; Chlorophylls; Gyres; Salinity profiles; Phytoplankton; Altimetry; Marine DO - http://dx.doi.org/10.3389/fmars.2015.00001 ER - TY - JOUR T1 - Academic workshop on Earth sciences AN - 1722154361; 2015-098481 JF - Diqiu Kexue Jikan = TAO, Terrestrial, Atmospheric and Oceanic Sciences Y1 - 2015/02// PY - 2015 DA - February 2015 SP - 81 PB - Institute of Earth Sciences Academia Sinica, Taipei VL - 26 IS - 1 SN - 1017-0839, 1017-0839 KW - Taiwan KW - Far East KW - symposia KW - magnetic anomalies KW - Asia KW - magnetic field KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1722154361?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Diqiu+Kexue+Jikan+%3D+TAO%2C+Terrestrial%2C+Atmospheric+and+Oceanic+Sciences&rft.atitle=Academic+workshop+on+Earth+sciences&rft.au=&rft.aulast=&rft.aufirst=&rft.date=2015-02-01&rft.volume=26&rft.issue=1&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Diqiu+Kexue+Jikan+%3D+TAO%2C+Terrestrial%2C+Atmospheric+and+Oceanic+Sciences&rft.issn=10170839&rft_id=info:doi/ L2 - http://tao.cgu.org.tw/index.php?center=1&level=1&left=1 LA - English DB - GeoRef N1 - Conference title - Academic workshop on Earth sciences N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Document feature - illus. N1 - SuppNotes - Individual papers within scope are cited separately N1 - Last updated - 2015-10-15 N1 - SubjectsTermNotLitGenreText - Asia; Far East; magnetic anomalies; magnetic field; symposia; Taiwan ER - TY - JOUR T1 - Evaluating the March 27, 2013 M 6.2 earthquake hypocenter using momentary high-conductivity materials AN - 1722154350; 2015-098482 AB - Seismo-magnetic anomalies induced from the momentary existence of current and/or high-conductivity materials have been widely reported. The Parkinson vectors derived from 3-component geomagnetic data at 3 stations were obtained via the magnetic transfer function and discussed with respect to the location (23.90 degrees E, 121.07 degrees N) and the depth (15.1 km) of the M 6.2 earthquake on March 27, 2013 in Taiwan. Azimuth distribution constructed from the entire Parkinson vectors during the observation period is utilized to estimate the persistent background (i.e., the coast effect and underlying inhomogeneous tectonic structures) at each station. The normalized background distribution is subtracted from the normalized monitoring distributions computed using the azimuths of the Parkinson vectors within a 15-day moving window to determine the anomalous azimuths of high-conductivity materials. The depth ranges of high-conductivity materials are evaluated when the magnetic transfer function is subjected to the skin effect. The analytical results show that high-conductivity materials appeared in areas (121.25 degrees E, 23.70 degrees N) and about 10-25 km in depth. The location of the high-conductivity materials is about 32 km away from the epicenter reported by the Central Weather Bureau and well covers the hypocenter depth. The agreement sheds lights on forecasting locations and hypocenter depths of forthcoming earthquakes via momentary existence of earthquake-related high-conductivity materials. JF - Diqiu Kexue Jikan = TAO, Terrestrial, Atmospheric and Oceanic Sciences AU - Chen, Chieh-Hung AU - Lin, Cheng-Horng AU - Hsu, Han-Lun AU - Wang, Chung-Ho AU - Lee, Lou-Chuang AU - Han, Peng AU - Wen, Strong AU - Chen, Chow-Son Y1 - 2015/02// PY - 2015 DA - February 2015 SP - 1 EP - 9 PB - Institute of Earth Sciences Academia Sinica, Taipei VL - 26 IS - 1 SN - 1017-0839, 1017-0839 KW - Taiwan KW - Far East KW - magnitude KW - magnetic anomalies KW - effects KW - magnetic field KW - depth KW - conductivity KW - seismicity KW - earthquake prediction KW - Taiwan earthquake 2013 KW - focus KW - epicenters KW - Parkinson vectors KW - Asia KW - earthquakes KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1722154350?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Diqiu+Kexue+Jikan+%3D+TAO%2C+Terrestrial%2C+Atmospheric+and+Oceanic+Sciences&rft.atitle=Evaluating+the+March+27%2C+2013+M+6.2+earthquake+hypocenter+using+momentary+high-conductivity+materials&rft.au=Chen%2C+Chieh-Hung%3BLin%2C+Cheng-Horng%3BHsu%2C+Han-Lun%3BWang%2C+Chung-Ho%3BLee%2C+Lou-Chuang%3BHan%2C+Peng%3BWen%2C+Strong%3BChen%2C+Chow-Son&rft.aulast=Chen&rft.aufirst=Chieh-Hung&rft.date=2015-02-01&rft.volume=26&rft.issue=1&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Diqiu+Kexue+Jikan+%3D+TAO%2C+Terrestrial%2C+Atmospheric+and+Oceanic+Sciences&rft.issn=10170839&rft_id=info:doi/10.3319%2FTAO.2014.08.19.01%28GRT%29 L2 - http://tao.cgu.org.tw/index.php?center=1&level=1&left=1 LA - English DB - GeoRef N1 - Conference title - Academic workshop on Earth sciences N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 54 N1 - Document feature - illus. incl. 1 table, sketch maps N1 - Last updated - 2015-10-15 N1 - SubjectsTermNotLitGenreText - Asia; conductivity; depth; earthquake prediction; earthquakes; effects; epicenters; Far East; focus; magnetic anomalies; magnetic field; magnitude; Parkinson vectors; seismicity; Taiwan; Taiwan earthquake 2013 DO - http://dx.doi.org/10.3319/TAO.2014.08.19.01(GRT) ER - TY - JOUR T1 - Lower mantle electrical conductivity inferred from probabilistic tomography AN - 1722154207; 2015-098483 AB - Electrical conductivity is a potentially powerful observable that may be used in combination with seismological models to investigate the 3D thermo-chemical structure of the Earth's mantle because it depends upon both temperature and compositional parameters. Despite strong uncertainties in the lower mantle mineral conductive properties and ambiguities in choosing an appropriate average scheme to estimate the aggregate conductivity from the individual conductivities of each mineral, it is possible to calculate a radial reference model and 3D maps of electrical conductivity in the lower mantle from thermo-chemical reference models and 3D maps. This work presents a first attempt to build such models using probabilistic tomography as the input thermo-chemical structure. The radial model increases from about 0.6 S m (super -1) at the top of the lower mantle to 16 S m (super -1) at its bottom. The 3D structure shows strong lateral variations at both the top (670-1200 km) and bottom (2000-2891 km) of the lower mantle, with moderate variations in the 1200-2000 km layer. In the lowermost mantle (>2000 km), which is not yet imaged yet by electrical conductivity tomographic models, a belt of high conductivity extends along the equator with relative anomalies up to 90% compared to the horizontal average. JF - Diqiu Kexue Jikan = TAO, Terrestrial, Atmospheric and Oceanic Sciences AU - Deschamps, Frederic Y1 - 2015/02// PY - 2015 DA - February 2015 SP - 27 EP - 40 PB - Institute of Earth Sciences Academia Sinica, Taipei VL - 26 IS - 1 SN - 1017-0839, 1017-0839 KW - tomography KW - P-waves KW - body waves KW - electrical conductivity KW - elasticity KW - three-dimensional models KW - statistical analysis KW - mantle KW - magnetic anomalies KW - elastic waves KW - effects KW - temperature KW - lower mantle KW - seismicity KW - velocity KW - probability KW - seismic waves KW - algorithms KW - earthquakes KW - S-waves KW - 18:Solid-earth geophysics KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1722154207?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Diqiu+Kexue+Jikan+%3D+TAO%2C+Terrestrial%2C+Atmospheric+and+Oceanic+Sciences&rft.atitle=Lower+mantle+electrical+conductivity+inferred+from+probabilistic+tomography&rft.au=Deschamps%2C+Frederic&rft.aulast=Deschamps&rft.aufirst=Frederic&rft.date=2015-02-01&rft.volume=26&rft.issue=1&rft.spage=27&rft.isbn=&rft.btitle=&rft.title=Diqiu+Kexue+Jikan+%3D+TAO%2C+Terrestrial%2C+Atmospheric+and+Oceanic+Sciences&rft.issn=10170839&rft_id=info:doi/ L2 - http://tao.cgu.org.tw/index.php?center=1&level=1&left=1 LA - English DB - GeoRef N1 - Conference title - Academic workshop on Earth sciences N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 49 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2015-10-15 N1 - SubjectsTermNotLitGenreText - algorithms; body waves; earthquakes; effects; elastic waves; elasticity; electrical conductivity; lower mantle; magnetic anomalies; mantle; P-waves; probability; S-waves; seismic waves; seismicity; statistical analysis; temperature; three-dimensional models; tomography; velocity ER - TY - JOUR T1 - Electromagnetic coupling of ocean flow with the Earth system AN - 1722154184; 2015-098484 AB - The ocean is electromagnetically coupled with the Earth System. This results in momentum transfer, as well as a participation by the ocean in the Earth's observable electric and magnetic fields. The coupling is typically quite weak and quantitative analyses indicate that many of these connections may be discounted when considering the transfer of momentum. But because of systematic effects there are also cases where an immediate discount is not justified and electromagnetic transfer of ocean momentum should remain within the realm of consideration. For practical considerations, even if the coupling is weak these effects are phenomenologically important because the electric and magnetic fields associated with this coupling offer an observational means for inferring the ocean flow. While in situ measurements of the electric field have long been used to measure ocean transport, new opportunities for remote sensing ocean flow through ground and space magnetic observatories are now being considered. In this article a brief update of the status of these observational methods is given. Extending beyond these established elements of the ocean's electromagnetic involvement, an attempt is made to provide a quantitative discussion of lesser considered elements of the ocean's electromagnetic coupling with the mantle and fluid core. JF - Diqiu Kexue Jikan = TAO, Terrestrial, Atmospheric and Oceanic Sciences AU - Tyler, Robert Y1 - 2015/02// PY - 2015 DA - February 2015 SP - 41 EP - 52 PB - Institute of Earth Sciences Academia Sinica, Taipei VL - 26 IS - 1 SN - 1017-0839, 1017-0839 KW - ocean circulation KW - experimental studies KW - angular momentum KW - technology KW - mantle KW - fluid flow KW - coupling KW - fluid phase KW - elastic waves KW - effects KW - magnetic field KW - mass balance KW - core KW - electromagnetic field KW - ocean floors KW - kinetics KW - remote sensing KW - amplitude KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1722154184?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Diqiu+Kexue+Jikan+%3D+TAO%2C+Terrestrial%2C+Atmospheric+and+Oceanic+Sciences&rft.atitle=Electromagnetic+coupling+of+ocean+flow+with+the+Earth+system&rft.au=Tyler%2C+Robert&rft.aulast=Tyler&rft.aufirst=Robert&rft.date=2015-02-01&rft.volume=26&rft.issue=1&rft.spage=41&rft.isbn=&rft.btitle=&rft.title=Diqiu+Kexue+Jikan+%3D+TAO%2C+Terrestrial%2C+Atmospheric+and+Oceanic+Sciences&rft.issn=10170839&rft_id=info:doi/10.3319%2FTAO.2014.08.19.04%28GRT%29 L2 - http://tao.cgu.org.tw/index.php?center=1&level=1&left=1 LA - English DB - GeoRef N1 - Conference title - Academic workshop on Earth sciences N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 74 N1 - Document feature - illus. N1 - Last updated - 2015-10-15 N1 - SubjectsTermNotLitGenreText - amplitude; angular momentum; core; coupling; effects; elastic waves; electromagnetic field; experimental studies; fluid flow; fluid phase; kinetics; magnetic field; mantle; mass balance; ocean circulation; ocean floors; remote sensing; technology DO - http://dx.doi.org/10.3319/TAO.2014.08.19.04(GRT) ER - TY - JOUR T1 - Preseismic TEC changes for Tohoku-Oki earthquake; comparisons between simulations and observations AN - 1722153910; 2015-098486 AB - Heki (2011) reported that the Japanese Global Positioning System (GPS) dense network detected a precursory positive total electron content anomaly (TEC), with Delta TEC approximately 3 TECU, approximately 40 minutes before the Tohoku-Oki earthquake (Mw 9.0). Similar preseismic TEC anomalies were also observed in the 2010 Chile earthquake (Mw 8.8), 2004 Sumatra-Andaman (Mw 9.2) and the 1994 Hokkaido-Toho-Oki (Mw 8.3). In this paper we apply our improved lithosphere-atmosphere-ionosphere (LAI) coupling model to compute the TEC variations and compare the simulation results with the reported TEC observations. For the Tohoku-Oki earthquake simulations we assumed that the stressed associated current started approximately 40 minutes before the earthquake, linearly increased and reached its maximum magnitude at the time of the earthquake main shock. It is suggested that a dynamo current density of approximately 25 nA m (super -2) is required to produce the observed Delta TEC approximately TECU. JF - Diqiu Kexue Jikan = TAO, Terrestrial, Atmospheric and Oceanic Sciences AU - Kuo, Cheng-Ling AU - Lee, Lou-Chuang AU - Heki, Kosuke Y1 - 2015/02// PY - 2015 DA - February 2015 SP - 63 EP - 72 PB - Institute of Earth Sciences Academia Sinica, Taipei VL - 26 IS - 1 SN - 1017-0839, 1017-0839 KW - precursors KW - ionosphere KW - Tohoku-Oki earthquake 2011 KW - Far East KW - numerical models KW - magnitude KW - coupling KW - atmosphere KW - Tohoku KW - simulation KW - models KW - seismicity KW - quantitative analysis KW - Honshu KW - algorithms KW - Asia KW - earthquakes KW - Japan KW - electrons KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1722153910?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Diqiu+Kexue+Jikan+%3D+TAO%2C+Terrestrial%2C+Atmospheric+and+Oceanic+Sciences&rft.atitle=Preseismic+TEC+changes+for+Tohoku-Oki+earthquake%3B+comparisons+between+simulations+and+observations&rft.au=Kuo%2C+Cheng-Ling%3BLee%2C+Lou-Chuang%3BHeki%2C+Kosuke&rft.aulast=Kuo&rft.aufirst=Cheng-Ling&rft.date=2015-02-01&rft.volume=26&rft.issue=1&rft.spage=63&rft.isbn=&rft.btitle=&rft.title=Diqiu+Kexue+Jikan+%3D+TAO%2C+Terrestrial%2C+Atmospheric+and+Oceanic+Sciences&rft.issn=10170839&rft_id=info:doi/10.3319%2FTAO.2014.08.19.06%28GRT%29 L2 - http://tao.cgu.org.tw/index.php?center=1&level=1&left=1 LA - English DB - GeoRef N1 - Conference title - Academic workshop on Earth sciences N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 23 N1 - Document feature - illus. N1 - Last updated - 2015-10-15 N1 - SubjectsTermNotLitGenreText - algorithms; Asia; atmosphere; coupling; earthquakes; electrons; Far East; Honshu; ionosphere; Japan; magnitude; models; numerical models; precursors; quantitative analysis; seismicity; simulation; Tohoku; Tohoku-Oki earthquake 2011 DO - http://dx.doi.org/10.3319/TAO.2014.08.19.06(GRT) ER - TY - JOUR T1 - New magnetic anomaly map of the east Asia with some preliminary tectonic interpretations AN - 1722153891; 2015-098487 AB - Magnetic data provides basic information for geological and geophysical interpretation. In this study we compile recently collected (57 cruises survey) and old (published and open access) magnetic data. This compilation includes land, marine and aeromagnetic data acquired in the East Asia region. The newly acquired magnetic data are mainly concentrated mainly in the South China Sea (SCS) (especially in the northern continental shelf), the northwestern part of the West Philippine Basin (WPB), and the East China Sea. The updated magnetic dataset is gridded with a spacing of one arc-minute. The new magnetic map provides new insights into the tectonic setting of East Asia. Analysis of the compiled data reveals several regional anomaly patterns: (1) the NE-SW trending high positive magnetic anomaly zone extending from southwest Taiwan to the area about 114.5 degrees E and 22 degrees N is pronounced; but it is less continuous southwest of the Penghu islands. In addition, the orientation of this high linear magnetic zone changes slightly in 118.5 degrees E, 22.5 degrees N from N60 degrees E-N50 degrees E. (2) Between the Gagua Ridge (GR) and the Luzon-Okinawa Fracture Zone (LOFZ) the marine magnetic stripes of the WPB exhibit a NW-SE orientation. This suggests that the seafloor spreading could be related to the first stage of the WPB east of the LOFZ. (3) The Urdaneta and Amami plateaus are associated with high magnetization zones. These high magnetization zones extend northwestward and are subducting beneath the Ryukyu Trench. JF - Diqiu Kexue Jikan = TAO, Terrestrial, Atmospheric and Oceanic Sciences AU - Doo, Wen-Bin AU - Hsu, Shu-Kun AU - Armada, Leo Y1 - 2015/02// PY - 2015 DA - February 2015 SP - 73 EP - 81 PB - Institute of Earth Sciences Academia Sinica, Taipei VL - 26 IS - 1 SN - 1017-0839, 1017-0839 KW - East China Sea KW - Taiwan KW - Far East KW - geophysical surveys KW - geophysical methods KW - magnetic methods KW - magnetic anomalies KW - West Pacific KW - eastern Asia KW - Penghu Islands KW - Gagua Ridge KW - North Pacific KW - Pacific Ocean KW - sea-floor spreading KW - surveys KW - Northwest Pacific KW - Asia KW - South China Sea KW - 18:Solid-earth geophysics KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1722153891?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Diqiu+Kexue+Jikan+%3D+TAO%2C+Terrestrial%2C+Atmospheric+and+Oceanic+Sciences&rft.atitle=New+magnetic+anomaly+map+of+the+east+Asia+with+some+preliminary+tectonic+interpretations&rft.au=Doo%2C+Wen-Bin%3BHsu%2C+Shu-Kun%3BArmada%2C+Leo&rft.aulast=Doo&rft.aufirst=Wen-Bin&rft.date=2015-02-01&rft.volume=26&rft.issue=1&rft.spage=73&rft.isbn=&rft.btitle=&rft.title=Diqiu+Kexue+Jikan+%3D+TAO%2C+Terrestrial%2C+Atmospheric+and+Oceanic+Sciences&rft.issn=10170839&rft_id=info:doi/10.3319%2FTAO.2014.08.19.07%28GRT%29 L2 - http://tao.cgu.org.tw/index.php?center=1&level=1&left=1 LA - English DB - GeoRef N1 - Conference title - Academic workshop on Earth sciences N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 50 N1 - Document feature - illus. incl. 1 table, sketch maps N1 - Last updated - 2015-10-15 N1 - SubjectsTermNotLitGenreText - Asia; East China Sea; eastern Asia; Far East; Gagua Ridge; geophysical methods; geophysical surveys; magnetic anomalies; magnetic methods; North Pacific; Northwest Pacific; Pacific Ocean; Penghu Islands; sea-floor spreading; South China Sea; surveys; Taiwan; West Pacific DO - http://dx.doi.org/10.3319/TAO.2014.08.19.07(GRT) ER - TY - JOUR T1 - An ensemble algorithm based component for geomagnetic data assimilation AN - 1722153004; 2015-098485 AB - Geomagnetic data assimilation is one of the most recent developments in geomagnetic studies. It combines geodynamo model outputs and surface geomagnetic observations to provide more accurate estimates of the core dynamic state and provide accurate geomagnetic secular variation forecasting. To facilitate geomagnetic data assimilation studies, we develop a standalone data assimilation component for the geomagnetic community. This component is used to calculate the forecast error covariance matrices and the gain matrix from a given geodynamo solution, which can then be used for sequential geomagnetic data assimilation. This component is very flexible and can be executed independently. It can also be easily integrated with arbitrary dynamo models. JF - Diqiu Kexue Jikan = TAO, Terrestrial, Atmospheric and Oceanic Sciences AU - Sun, Zhibin AU - Kuang, Weijia Y1 - 2015/02// PY - 2015 DA - February 2015 SP - 53 EP - 61 PB - Institute of Earth Sciences Academia Sinica, Taipei VL - 26 IS - 1 SN - 1017-0839, 1017-0839 KW - outer core KW - errors KW - mathematical methods KW - dynamos KW - magnetic anomalies KW - core KW - algorithms KW - convection KW - accuracy KW - magnetic field KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1722153004?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Diqiu+Kexue+Jikan+%3D+TAO%2C+Terrestrial%2C+Atmospheric+and+Oceanic+Sciences&rft.atitle=An+ensemble+algorithm+based+component+for+geomagnetic+data+assimilation&rft.au=Sun%2C+Zhibin%3BKuang%2C+Weijia&rft.aulast=Sun&rft.aufirst=Zhibin&rft.date=2015-02-01&rft.volume=26&rft.issue=1&rft.spage=53&rft.isbn=&rft.btitle=&rft.title=Diqiu+Kexue+Jikan+%3D+TAO%2C+Terrestrial%2C+Atmospheric+and+Oceanic+Sciences&rft.issn=10170839&rft_id=info:doi/10.3319%2FTAO.2014.08.19.04%28GRT%29 L2 - http://tao.cgu.org.tw/index.php?center=1&level=1&left=1 LA - English DB - GeoRef N1 - Conference title - Academic workshop on Earth sciences N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 28 N1 - Document feature - illus. N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-10-15 N1 - SubjectsTermNotLitGenreText - accuracy; algorithms; convection; core; dynamos; errors; magnetic anomalies; magnetic field; mathematical methods; outer core DO - http://dx.doi.org/10.3319/TAO.2014.08.19.04(GRT) ER - TY - JOUR T1 - Dielectric breakdown weathering of the Moon's polar regolith AN - 1700098007; 2015-071069 AB - Galactic cosmic rays and solar energetic particles (SEPs) can charge the Moon's subsurface, a process expected to be particularly important in the polar regions. Experiments have shown that sufficient fluences (i.e., time-integrated fluxes) of energetic charged particles can cause dielectric breakdown, in which the electric field rapidly vaporizes small, filamentary channels within a dielectric. Lunar regolith has both the characteristics and, in some polar locations, the environment needed to make breakdown likely. We combine the Jet Propulsion Laboratory proton fluence model with temperature measurements from the Lunar Reconnaissance Orbiter's (LRO's) Diviner instrument and related temperature modeling to estimate how often breakdown occurs in the polar regions. We find that all gardened regolith within permanently shadowed regions (PSRs) has likely experienced up to 2X10 (super 6) SEP events capable of causing breakdown, while the warmest polar regions have experienced about 2 orders of magnitude fewer events. We also use measurements from the Cosmic Ray Telescope for the Effects of Radiation on LRO to show that at least two breakdown-inducing events may have occurred since LRO arrived at the Moon in 2009. Finally, we discuss how such "breakdown weathering" may increase the percentage of fine and monomineralic grains within PSRs; explain the presence of so-called "fairy castle" regolith structures; and contribute to other low-albedo features detected by LRO's Lyman Alpha Mapping Project, possibly establishing a correlation between these features and the average temperatures within craters that are only partly in permanent shadow. Abstract Copyright (2015), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Jordan, A P AU - Stubbs, T J AU - Wilson, J K AU - Schwadron, N A AU - Spence, H E Y1 - 2015/02// PY - 2015 DA - February 2015 SP - 210 EP - 225 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 120 IS - 2 SN - 2169-9097, 2169-9097 KW - polar regions KW - Moon KW - Lunar Reconnaissance Orbiter KW - numerical analysis KW - solar wind KW - equations KW - weathering KW - temperature KW - dielectric properties KW - solar radiation KW - cosmic rays KW - regolith KW - particles KW - lunar soils KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700098007?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Planets&rft.atitle=Dielectric+breakdown+weathering+of+the+Moon%27s+polar+regolith&rft.au=Jordan%2C+A+P%3BStubbs%2C+T+J%3BWilson%2C+J+K%3BSchwadron%2C+N+A%3BSpence%2C+H+E&rft.aulast=Jordan&rft.aufirst=A&rft.date=2015-02-01&rft.volume=120&rft.issue=2&rft.spage=210&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2F2014JE004710 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9100 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 61 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2015-07-30 N1 - SubjectsTermNotLitGenreText - cosmic rays; dielectric properties; equations; Lunar Reconnaissance Orbiter; lunar soils; Moon; numerical analysis; particles; polar regions; regolith; solar radiation; solar wind; temperature; weathering DO - http://dx.doi.org/10.1002/2014JE004710 ER - TY - JOUR T1 - Revisiting N sub(2) fixation in Guerrero Negro intertidal microbial mats with a functional single-cell approach AN - 1687676199; PQ0001182404 AB - Photosynthetic microbial mats are complex, stratified ecosystems in which high rates of primary production create a demand for nitrogen, met partially by N sub(2) fixation. Dinitrogenase reductase (nifH) genes and transcripts from Cyanobacteria and heterotrophic bacteria (for example, Deltaproteobacteria) were detected in these mats, yet their contribution to N sub(2) fixation is poorly understood. We used a combined approach of manipulation experiments with inhibitors, nifH sequencing and single-cell isotope analysis to investigate the active diazotrophic community in intertidal microbial mats at Laguna Ojo de Liebre near Guerrero Negro, Mexico. Acetylene reduction assays with specific metabolic inhibitors suggested that both sulfate reducers and members of the Cyanobacteria contributed to N sub(2) fixation, whereas super(15)N sub(2) tracer experiments at the bulk level only supported a contribution of Cyanobacteria. Cyanobacterial and nifH Cluster III (including deltaproteobacterial sulfate reducers) sequences dominated the nifH gene pool, whereas the nifH transcript pool was dominated by sequences related to Lyngbya spp. Single-cell isotope analysis of super(15)N sub(2)-incubated mat samples via high-resolution secondary ion mass spectrometry (NanoSIMS) revealed that Cyanobacteria were enriched in super(15)N, with the highest enrichment being detected in Lyngbya spp. filaments (on average 4.4 at% super(15)N), whereas the Deltaproteobacteria (identified by CARD-FISH) were not significantly enriched. We investigated the potential dilution effect from CARD-FISH on the isotopic composition and concluded that the dilution bias was not substantial enough to influence our conclusions. Our combined data provide evidence that members of the Cyanobacteria, especially Lyngbya spp., actively contributed to N sub(2) fixation in the intertidal mats, whereas support for significant N sub(2) fixation activity of the targeted deltaproteobacterial sulfate reducers could not be found. JF - ISME Journal AU - Woebken, Dagmar AU - Burow, Luke C AU - Behnam, Faris AU - Mayali, Xavier AU - Schintlmeister, Arno AU - Fleming, Erich D AU - Prufert-Bebout, Leslie AU - Singer, Steven W AU - Cortes, Alejandro Lopez AU - Hoehler, Tori M AU - Pett-Ridge, Jennifer AU - Spormann, Alfred M AU - Wagner, Michael AU - Weber, Peter K AU - Bebout, Brad M AD - 1] Departments of Chemical Engineering, and of Civil and Environmental Engineering, Stanford University, Stanford, CA, USA [2] Exobiology Branch, NASA Ames Research Center, Moffett Field, CA, USA [3] Department of Microbiology and Ecosystem Science, Division of Microbial Ecology, University of Vienna, Vienna, Austria Y1 - 2015/02// PY - 2015 DA - Feb 2015 SP - 485 EP - 496 PB - Nature Publishing Group, The Macmillan Building London N1 9XW United Kingdom VL - 9 IS - 2 SN - 1751-7362, 1751-7362 KW - Microbiology Abstracts A: Industrial & Applied Microbiology KW - Acetylene reduction KW - Lyngbya KW - Isotopes KW - Data processing KW - NifH gene KW - Primary production KW - Mass spectroscopy KW - Sulfate KW - Tracers KW - Cyanobacteria KW - reductase KW - Pyruvic acid KW - Heterotrophic bacteria KW - Filaments KW - Nitrogen KW - Microbial mats KW - A 01400:Soil Microbes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1687676199?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologya&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=ISME+Journal&rft.atitle=Revisiting+N+sub%282%29+fixation+in+Guerrero+Negro+intertidal+microbial+mats+with+a+functional+single-cell+approach&rft.au=Woebken%2C+Dagmar%3BBurow%2C+Luke+C%3BBehnam%2C+Faris%3BMayali%2C+Xavier%3BSchintlmeister%2C+Arno%3BFleming%2C+Erich+D%3BPrufert-Bebout%2C+Leslie%3BSinger%2C+Steven+W%3BCortes%2C+Alejandro+Lopez%3BHoehler%2C+Tori+M%3BPett-Ridge%2C+Jennifer%3BSpormann%2C+Alfred+M%3BWagner%2C+Michael%3BWeber%2C+Peter+K%3BBebout%2C+Brad+M&rft.aulast=Woebken&rft.aufirst=Dagmar&rft.date=2015-02-01&rft.volume=9&rft.issue=2&rft.spage=485&rft.isbn=&rft.btitle=&rft.title=ISME+Journal&rft.issn=17517362&rft_id=info:doi/10.1038%2Fismej.2014.144 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-06-01 N1 - Last updated - 2015-11-16 N1 - SubjectsTermNotLitGenreText - Acetylene reduction; Isotopes; Data processing; NifH gene; Primary production; Mass spectroscopy; Sulfate; Tracers; Pyruvic acid; reductase; Heterotrophic bacteria; Filaments; Microbial mats; Nitrogen; Lyngbya; Cyanobacteria DO - http://dx.doi.org/10.1038/ismej.2014.144 ER - TY - JOUR T1 - How well do satellite AOD observations represent the spatial and temporal variability of PM2.5 concentration for the United States? AN - 1677912040; PQ0001283752 AB - Due to their extensive spatial coverage, satellite Aerosol Optical Depth (AOD) observations have been widely used to estimate and predict surface PM2.5 concentrations. While most previous studies have focused on establishing relationships between collocated, hourly or daily AOD and PM2.5 measurements, in this study, we instead focus on the comparison of the large-scale spatial and temporal variability between satellite AOD and PM2.5 using monthly mean measurements. A newly developed spectral analysis technique - Combined Maximum Covariance Analysis (CMCA) is applied to Moderate Resolution Imaging Spectroradiometer (MODIS), Multi-angle Imaging Spectroradiometer (MISR), Sea-viewing Wide Field-of-view Sensor (SeaWiFS) and Ozone Monitoring Instrument (OMI) AOD datasets and Environmental Protection Agency (EPA) PM2.5 data, in order to extract and compare the dominant modes of variability. Results indicate that AOD and PM2.5 agree well in terms of interannual variability. An overall decrease is found in both AOD and PM2.5 across the United States, with the strongest signal over the eastern US. With respect to seasonality, good agreement is found only for Eastern US, while for Central and Western US, AOD and PM2.5 seasonal cycles are largely different or even reversed. These results are verified using Aerosol Robotic Network (AERONET) AOD observations and differences between satellite and AERONET are also examined. MODIS and MISR appear to have the best agreement with AERONET. In order to explain the disagreement between AOD and PM2.5 seasonality, we further use Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) extinction profile data to investigate the effect of two possible contributing factors, namely aerosol vertical distribution and cloud-free sampling. We find that seasonal changes in aerosol vertical distribution, due to the seasonally varying mixing height, is the primary cause for the AOD and PM2.5 seasonal discrepancy, in particular, the low AOD but high PM2.5 observed during the winter season for Central and Western US. In addition, cloud-free sampling by passive sensors also induces some bias in AOD seasonality, especially for the Western US, where the largest seasonal change in cloud fraction is found. The seasonal agreement between low level (below 500 m AGL), all sky CALIOP AOD and PM2.5 is significantly better than column AOD from MODIS, MISR, SeaWiFS and OMI. In particular, the correlation between low level, all sky AOD and PM2.5 seasonal cycles increases to above 0.7 for Central and Western US, as opposed to near zero or negative correlation for column, clear sky AOD. This result highlights the importance of accounting for the seasonally varying aerosol profiles and cloud-free sampling bias when using column AOD measurements to infer surface PM2.5 concentrations. JF - Atmospheric Environment AU - Li, Jing AU - Carlson, Barbara E AU - Lacis, Andrew A AD - NASA Goddard Institute for Space Studies, New York, NY 10025, USA Y1 - 2015/02// PY - 2015 DA - February 2015 SP - 260 EP - 273 PB - Elsevier B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 102 SN - 1352-2310, 1352-2310 KW - Environmental Engineering Abstracts (EN); CSA / ASCE Civil Engineering Abstracts (CE); Aerospace & High Technology Database (AH) KW - PM2 KW - Aerosol optical depth KW - Satellite remote sensing KW - Principal component analysis KW - Spatial and temporal variability KW - Aerosols KW - Spectroradiometers KW - Argon oxygen decarburizing KW - Sampling KW - Imaging KW - Satellites KW - Sky KW - MODIS UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1677912040?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Atmospheric+Environment&rft.atitle=How+well+do+satellite+AOD+observations+represent+the+spatial+and+temporal+variability+of+PM2.5+concentration+for+the+United+States%3F&rft.au=Li%2C+Jing%3BCarlson%2C+Barbara+E%3BLacis%2C+Andrew+A&rft.aulast=Li&rft.aufirst=Jing&rft.date=2015-02-01&rft.volume=102&rft.issue=&rft.spage=260&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Environment&rft.issn=13522310&rft_id=info:doi/10.1016%2Fj.atmosenv.2014.12.010 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-01 N1 - Last updated - 2017-01-05 DO - http://dx.doi.org/10.1016/j.atmosenv.2014.12.010 ER - TY - JOUR T1 - Volatile and isotopic imprints of ancient Mars AN - 1673365925; 2015-034339 AB - The science investigations enabled by Curiosity rover's instruments focus on identifying and exploring the habitability of the Martian environment. Measurements of noble gases, organic and inorganic compounds, and the isotopes of light elements permit the study of the physical and chemical processes that have transformed Mars throughout its history. Samples of the atmosphere, volatiles released from soils, and rocks from the floor of Gale Crater have provided a wealth of new data and a window into conditions on ancient Mars. JF - Elements AU - Mahaffy, Paul R AU - Conrad, Pamela G Y1 - 2015/02// PY - 2015 DA - February 2015 SP - 51 EP - 56 PB - Mineralogical Society of America and Mineralogical Society of Great Britain and Ireland and Mineralogical Association of Canada and Geochemical Society and Clay Minerals Society VL - 11 IS - 1 SN - 1811-5209, 1811-5209 KW - isotopes KW - aliphatic hydrocarbons KW - cosmogenic elements KW - astrobiology KW - Mars KW - Gale Crater KW - sedimentary rocks KW - Curiosity Rover KW - tracers KW - chemical composition KW - methane KW - mudstone KW - Yellowknife Bay Formation KW - atmosphere KW - alkanes KW - gases KW - terrestrial planets KW - planets KW - volatiles KW - Sample Analysis at Mars KW - organic compounds KW - paleoenvironment KW - habitability KW - lacustrine environment KW - hydrocarbons KW - Mount Sharp KW - clastic rocks KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1673365925?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Elements&rft.atitle=Volatile+and+isotopic+imprints+of+ancient+Mars&rft.au=Mahaffy%2C+Paul+R%3BConrad%2C+Pamela+G&rft.aulast=Mahaffy&rft.aufirst=Paul&rft.date=2015-02-01&rft.volume=11&rft.issue=1&rft.spage=51&rft.isbn=&rft.btitle=&rft.title=Elements&rft.issn=18115209&rft_id=info:doi/10.2113%2Fgselements.11.1.51 L2 - http://www.elementsmagazine.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2015-01-01 N1 - Number of references - 31 N1 - Document feature - illus. incl. 2 tables, sketch map N1 - Last updated - 2015-04-16 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; astrobiology; atmosphere; chemical composition; clastic rocks; cosmogenic elements; Curiosity Rover; Gale Crater; gases; habitability; hydrocarbons; isotopes; lacustrine environment; Mars; methane; Mount Sharp; mudstone; organic compounds; paleoenvironment; planets; Sample Analysis at Mars; sedimentary rocks; terrestrial planets; tracers; volatiles; Yellowknife Bay Formation DO - http://dx.doi.org/10.2113/gselements.11.1.51 ER - TY - JOUR T1 - A 10 km-resolution synthetic Venus gravity field model based on topography AN - 1660629771; 2015-021728 AB - A high resolution gravity field model is extremely important in the exploration of Venus. In this paper, we present a 3-dimensional Venus gravity field VGM2014 constructed by using the latest gravity and topography models, residual terrain model (RTM) and the Airy-Heiskanen isostatic compensation model. The VGM2014 is the first 10 km scale Venus gravity field model; the final results are representations of the 3-dimensional surface gravity accelerations and gravity disturbances for Venus. We found that the optimal global compensation depth of Venus is about 60 km, and the crustal density is potentially less than the commonly accepted value of 2700-2900 kg m (super -3) . This model will be potentially beneficial for the precise orbit determination and landing navigation of spacecraft around Venus, and may be utilized as a priori model for Venus gravity field simulation and inversion studies. The VGM2014 does not incorporate direct gravity information beyond degree 70 and it is not recommended for small-scale geophysical interpretation. JF - Icarus AU - Li, Fei AU - Yan, Jianguo AU - Xu, Luyuan AU - Jin, Shuanggen AU - Rodriquez, J Alexis P AU - Dohm, James H Y1 - 2015/02// PY - 2015 DA - February 2015 SP - 103 EP - 111 PB - Elsevier, New York, NY VL - 247 SN - 0019-1035, 0019-1035 KW - high-resolution methods KW - three-dimensional models KW - Venus KW - isostatic compensation KW - global KW - simulation KW - depth KW - terrestrial planets KW - isostasy KW - planets KW - gravity field KW - topography KW - planetary interiors KW - crust KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660629771?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=A+10+km-resolution+synthetic+Venus+gravity+field+model+based+on+topography&rft.au=Li%2C+Fei%3BYan%2C+Jianguo%3BXu%2C+Luyuan%3BJin%2C+Shuanggen%3BRodriquez%2C+J+Alexis+P%3BDohm%2C+James+H&rft.aulast=Li&rft.aufirst=Fei&rft.date=2015-02-01&rft.volume=247&rft.issue=&rft.spage=103&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.09.052 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 24 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2015-03-05 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - crust; depth; global; gravity field; high-resolution methods; isostasy; isostatic compensation; planetary interiors; planets; simulation; terrestrial planets; three-dimensional models; topography; Venus DO - http://dx.doi.org/10.1016/j.icarus.2014.09.052 ER - TY - JOUR T1 - A Dynamic Approach to Addressing Observation-Minus-Forecast Bias in a Land Surface Skin Temperature Data Assimilation System AN - 1660411795; PQ0001092680 AB - In land data assimilation, bias in the observation-minus-forecast (O - F) residuals is typically removed from the observations prior to assimilation by rescaling the observations to have the same long-term mean (and higher-order moments) as the corresponding model forecasts. Such observation rescaling approaches require a long record of observed and forecast estimates and an assumption that the O - F residuals are stationary. A two-stage observation bias and state estimation filter is presented here, as an alternative to observation rescaling that does not require a long data record or assume stationary O - F residuals. The two-stage filter removes dynamic (nonstationary) estimates of the seasonal-scale mean O - F difference from the assimilated observations, allowing the assimilation to correct the model for subseasonal-scale errors without adverse effects from observation biases. The two-stage filter is demonstrated by assimilating geostationary skin temperature T sub(skin) observations into the Catchment land surface model. Global maps of the estimated O - F biases are presented, and the two-stage filter is evaluated for one year over the Americas. The two-stage filter effectively removed the T sub(skin) O - F mean differences, for example, the Geostationary Operational Environmental Satellite (GOES)-West O - F mean difference at 2100 UTC was reduced from 5.1 K for a bias-blind assimilation to 0.3 K. Compared to independent in situ and remotely sensed T sub(skin) observations, the two-stage assimilation reduced the unbiased root-mean-square difference (ubRMSD) of the modeled T sub(skin) by 10% of the open-loop values. JF - Journal of Hydrometeorology AU - Draper, Clara AU - Reichle, Rolf AU - Lannoy, Gabrielle De AU - Scarino, Benjamin AD - Global Modeling and Assimilation Office, NASA Goddard Space Flight Center, Greenbelt, and Universities Space Research Association, Columbia, Maryland Y1 - 2015/02// PY - 2015 DA - February 2015 SP - 449 EP - 464 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 16 IS - 1 SN - 1525-755X, 1525-755X KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Remote sensing KW - Data assimilation KW - Land surface model KW - Remote Sensing KW - Catchment area KW - Maps KW - Environmental factors KW - Catchment basins KW - Temperature data KW - Satellite Technology KW - Catchment Areas KW - Temperature KW - Dynamics KW - Model Studies KW - Filters KW - Hydrometeorology KW - Hydrometeorological research KW - AQ 00001:Water Resources and Supplies KW - SW 5040:Data acquisition KW - Q2 09171:Dynamics of lakes and rivers KW - M2 551.509.1/.5:Forecasting (551.509.1/.5) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660411795?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydrometeorology&rft.atitle=A+Dynamic+Approach+to+Addressing+Observation-Minus-Forecast+Bias+in+a+Land+Surface+Skin+Temperature+Data+Assimilation+System&rft.au=Draper%2C+Clara%3BReichle%2C+Rolf%3BLannoy%2C+Gabrielle+De%3BScarino%2C+Benjamin&rft.aulast=Draper&rft.aufirst=Clara&rft.date=2015-02-01&rft.volume=16&rft.issue=1&rft.spage=449&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrometeorology&rft.issn=1525755X&rft_id=info:doi/10.1175%2FJHM-D-14-0087.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-03-01 N1 - Number of references - 39 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Catchment area; Environmental factors; Temperature data; Hydrometeorological research; Catchment basins; Remote sensing; Data assimilation; Remote Sensing; Hydrometeorology; Filters; Satellite Technology; Catchment Areas; Temperature; Maps; Dynamics; Model Studies DO - http://dx.doi.org/10.1175/JHM-D-14-0087.1 ER - TY - JOUR T1 - Calculating Crop Water Requirement Satisfaction in the West Africa Sahel with Remotely Sensed Soil Moisture AN - 1660410251; PQ0001092672 AB - The Soil Moisture Active Passive (SMAP) mission will provide soil moisture data with unprecedented accuracy, resolution, and coverage, enabling models to better track agricultural drought and estimate yields. In turn, this information can be used to shape policy related to food and water from commodity markets to humanitarian relief efforts. New data alone, however, do not translate to improvements in drought and yield forecasts. New tools will be needed to transform SMAP data into agriculturally meaningful products. The objective of this study is to evaluate the possibility and efficiency of replacing the rainfall-derived soil moisture component of a crop water stress index with SMAP data. The approach is demonstrated with 0.1 degree -resolution, similar to 10-day microwave soil moisture from the European Space Agency and simulated soil moisture from the Famine Early Warning Systems Network Land Data Assimilation System. Over a West Africa domain, the approach is evaluated by comparing the different soil moisture estimates and their resulting Water Requirement Satisfaction Index values from 2000 to 2010. This study highlights how the ensemble of indices performs during wet versus dry years, over different land-cover types, and the correlation with national-level millet yields. The new approach is a feasible and useful way to quantitatively assess how satellite-derived rainfall and soil moisture track agricultural water deficits. Given the importance of soil moisture in many applications, ranging from agriculture to public health to fire, this study should inspire other modeling communities to reformulate existing tools to take advantage of SMAP data. JF - Journal of Hydrometeorology AU - McNally, Amy AU - Husak, Gregory J AU - Brown, Molly AU - Carroll, Mark AU - Funk, Chris AU - Yatheendradas, Soni AU - Arsenault, Kristi AU - Peters-Lidard, Christa AD - Department of Geography and Climate Hazards Group, University of California, Santa Barbara, Santa Barbara, California, and Earth System Science Interdisciplinary Center, University of Maryland, College Park, College Park, and Hydrological Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland Y1 - 2015/02// PY - 2015 DA - February 2015 SP - 295 EP - 305 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 16 IS - 1 SN - 1525-755X, 1525-755X KW - Health & Safety Science Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Remote sensing KW - Hydrologic models KW - Agriculture KW - Rainfall KW - Water requirements KW - Soil Water KW - Data assimilation KW - Crops KW - Public health KW - Microwaves KW - Soils KW - Droughts KW - Crop water stress KW - Policies KW - Warning systems KW - Land use KW - Model Studies KW - Hydrometeorological research KW - Water stress KW - Millet yield KW - Africa KW - Agricultural drought KW - Moisture Content KW - Water Requirements KW - Soil moisture KW - Millet KW - Water deficit KW - Correlations KW - Drought KW - Yield KW - Networks KW - Fires KW - Data collection KW - European Space Agency KW - Hydrometeorology KW - Satellite data KW - Famines KW - AQ 00001:Water Resources and Supplies KW - H 6000:Natural Disasters/Civil Defense/Emergency Management KW - Q2 09102:Institutes and organizations KW - SW 5040:Data acquisition KW - M2 556.14:Infiltration/Soil Moisture (556.14) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660410251?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydrometeorology&rft.atitle=Calculating+Crop+Water+Requirement+Satisfaction+in+the+West+Africa+Sahel+with+Remotely+Sensed+Soil+Moisture&rft.au=McNally%2C+Amy%3BHusak%2C+Gregory+J%3BBrown%2C+Molly%3BCarroll%2C+Mark%3BFunk%2C+Chris%3BYatheendradas%2C+Soni%3BArsenault%2C+Kristi%3BPeters-Lidard%2C+Christa&rft.aulast=McNally&rft.aufirst=Amy&rft.date=2015-02-01&rft.volume=16&rft.issue=1&rft.spage=295&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrometeorology&rft.issn=1525755X&rft_id=info:doi/10.1175%2FJHM-D-14-0049.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-03-01 N1 - Number of references - 51 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Policies; Microwaves; Soils; Warning systems; Droughts; Public health; Water deficit; Fires; Crop water stress; European Space Agency; Remote sensing; Correlations; Drought; Data assimilation; Hydrometeorological research; Satellite data; Millet yield; Famines; Agricultural drought; Soil moisture; Agriculture; Data collection; Rainfall; Water requirements; Crops; Land use; Water stress; Millet; Hydrometeorology; Yield; Networks; Water Requirements; Moisture Content; Soil Water; Model Studies; Africa DO - http://dx.doi.org/10.1175/JHM-D-14-0049.1 ER - TY - JOUR T1 - A Return Stroke NO sub(x) Production Model AN - 1660408648; PQ0001094361 AB - A model is introduced for estimating the nitrogen oxides (NO sub(x) = NO + NO sub(2)) production from a lightning return stroke channel. A realistic modified transmission line model return stroke current is assumed to propagate vertically upward along a stepped leader channel of 0.1-cm radius. With additional assumptions about the initial radial expansion rate of the channel, the full nonlinear differential equation for the return stroke channel radius r(z, t) is solved numerically using Mathematica V9.0.1.0. Channel conductivity and channel air density are adjustable constants, and the model employs typical atmospheric profiles of temperature, pressure, and density. The channel pressure is modeled by a dynamic pressure expression. Channel temperature is extracted from the pressure by a minimization technique that involves a generalized gas law appropriate for high temperatures where dissociation and ionization are important. The altitude and time variations of the channel energy density are also obtained. Three model runs, each with different input parameters, are completed. Channel radii at sea level range from about 1.7 to 6.0 cm depending on the model inputs and are in good agreement with other investigators. The NO sub(x) production from each 1-m segment of the channel is computed using conservation of energy and equilibrium freeze-out-temperature chemistry. Because the NO sub(x) per meter of channel is computed as a function of altitude, extensions of the results to tortuous and branched channels are possible and lead to preliminary estimates of total return stroke NO sub(x). These estimates are found to be smaller than the return stroke NO sub(x) values obtained from the NASA Lightning Nitrogen Oxides Model (LNOM). JF - Journal of the Atmospheric Sciences AU - Koshak, William J AU - Solakiewicz, Richard J AU - Peterson, Harold S AD - NASA Marshall Space Flight Center, Huntsville, Alabama Y1 - 2015/02// PY - 2015 DA - February 2015 SP - 943 EP - 954 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 72 IS - 2 SN - 0022-4928, 0022-4928 KW - Pollution Abstracts; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Lightning KW - Chemistry KW - atmospheric KW - Differential equations KW - Laboratory/physical models KW - Model comparison KW - Sea level KW - Atmospheric pollution models KW - Atmospheric sciences KW - Altitude KW - High temperatures KW - High temperature KW - Lightning discharges KW - Conservation of energy KW - Modelling KW - Energy conservation KW - Temperature KW - Nitrogen oxides KW - Channels KW - Currents KW - Photochemicals KW - Energy KW - Atmospheric chemistry KW - Dissociation KW - Conservation KW - Nitrogen compounds KW - Ionization KW - Lightning return strokes KW - Oxides KW - Q2 09243:Structure, mechanics and thermodynamics KW - M2 551.510.42:Air Pollution (551.510.42) KW - P 0000:AIR POLLUTION KW - O 2070:Meteorology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660408648?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+Atmospheric+Sciences&rft.atitle=A+Return+Stroke+NO+sub%28x%29+Production+Model&rft.au=Koshak%2C+William+J%3BSolakiewicz%2C+Richard+J%3BPeterson%2C+Harold+S&rft.aulast=Koshak&rft.aufirst=William&rft.date=2015-02-01&rft.volume=72&rft.issue=2&rft.spage=943&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+Atmospheric+Sciences&rft.issn=00224928&rft_id=info:doi/10.1175%2FJAS-D-14-0121.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-03-01 N1 - Number of references - 42 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Atmospheric sciences; Lightning; Dissociation; Nitrogen compounds; Oxides; Modelling; Conservation of energy; Differential equations; High temperatures; Atmospheric pollution models; Conservation; Lightning discharges; Ionization; Lightning return strokes; Sea level; Temperature; Energy conservation; Nitrogen oxides; Channels; Altitude; Currents; Photochemicals; Energy; High temperature; Atmospheric chemistry DO - http://dx.doi.org/10.1175/JAS-D-14-0121.1 ER - TY - JOUR T1 - Modeling groundwater quality over a humid subtropical region using numerical indices, earth observation datasets, and X-ray diffraction technique: a case study of Allahabad district, India AN - 1647026839; 21313871 AB - Water is undoubtedly the vital commodity for all living creatures and required for well-being of the human society. The present work is based on the surveys and chemical analyses performed on the collected groundwater samples in a part of the Ganga basin in order to understand the sources and evolution of the water quality in the region. The two standard indices such as water quality index and synthetic pollution index for the classification of water in the region are computed. The soil and sediment analysis are carried out with the help of X-ray diffractometer (XRD) for the identification of possible source of ions in water from rock and soil weathering. The dominant minerals which include quartz, muscovite, plagioclase, and orthoclase are reported in the area. The study further utilizes the multivariate statistical techniques for handling large and complex datasets in order to get better information about the groundwater quality. The following statistical methods such as cluster analysis (CA), factor analysis (FA), and principal component analysis (PCA) are applied to handle the large datasets and to understand the latent structure of the data. Through FA/PCAs, we have identified a total of 3 factors in pre-monsoon and 4 factors in post-monsoon season, which are responsible for the whole data structure. These factors explain 77.62 and 82.39 % of the total variance of the pre- and post-monsoon datasets. On the other hand, CA depicted the regions that have similar pollutants origin. The average value of synthetic pollution index of groundwater during pre-monsoon is 9.27, while during post-monsoon, it has been recorded as 8.74. On the other hand, the average values of water quality index of groundwater during pre-monsoon and post-monsoon seasons are found as 217.59 and 233.02, respectively. The study indicates that there occurs an extensive urbanization with gradual vast development of various small- and large-scale industries, which is responsible for degradation in water quality. The overall analysis reveals that the agricultural runoff, waste disposal, leaching, and irrigation with wastewater are the main causes of groundwater pollution followed by some degree of pollution from geogenic sources such as rock and soil weathering, confirmed through XRD analysis. JF - Environmental Geochemistry and Health AU - Singh, Sudhir Kumar AU - Srivastava, Prashant K AU - Singh, Dharmveer AU - Han, Dawei AU - Gautam, Sandeep Kumar AU - Pandey, A C AD - K. Banerjee Centre of Atmospheric and Ocean Studies, IIDS, Nehru Science Centre, University of Allahabad, Allahabad, 211002, India, prashant.k.srivastava@nasa.gov Y1 - 2015/02// PY - 2015 DA - February 2015 SP - 157 EP - 180 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 37 IS - 1 SN - 0269-4042, 0269-4042 KW - Pollution Abstracts; Environment Abstracts; Sustainability Science Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Aqualine Abstracts; Health & Safety Science Abstracts; Water Resources Abstracts KW - Degradation KW - Urbanization KW - Agricultural pollution KW - Basins KW - Groundwater Pollution KW - Groundwater Basins KW - Plagioclase KW - Water quality KW - India KW - Soil KW - Classification KW - Quartz KW - Weathering KW - Agricultural runoff KW - Ions KW - Water Quality KW - Water quality standards KW - India, Uttar Pradesh, Allahabad Dist. KW - Water pollution KW - Groundwater pollution KW - Diffraction KW - Wastewater Analysis KW - Groundwater KW - Pollution Index KW - Wastewater KW - AQ 00001:Water Resources and Supplies KW - H 6000:Natural Disasters/Civil Defense/Emergency Management KW - SW 5010:Network design KW - ENA 09:Land Use & Planning KW - M3 1010:Issues in Sustainable Development KW - P 2000:FRESHWATER POLLUTION KW - Q5 08502:Methods and instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1647026839?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Geochemistry+and+Health&rft.atitle=Modeling+groundwater+quality+over+a+humid+subtropical+region+using+numerical+indices%2C+earth+observation+datasets%2C+and+X-ray+diffraction+technique%3A+a+case+study+of+Allahabad+district%2C+India&rft.au=Singh%2C+Sudhir+Kumar%3BSrivastava%2C+Prashant+K%3BSingh%2C+Dharmveer%3BHan%2C+Dawei%3BGautam%2C+Sandeep+Kumar%3BPandey%2C+A+C&rft.aulast=Singh&rft.aufirst=Sudhir&rft.date=2015-02-01&rft.volume=37&rft.issue=1&rft.spage=157&rft.isbn=&rft.btitle=&rft.title=Environmental+Geochemistry+and+Health&rft.issn=02694042&rft_id=info:doi/10.1007%2Fs10653-014-9638-z LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-01-01 N1 - Number of references - 51 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Urbanization; Quartz; Agricultural pollution; Groundwater pollution; Weathering; Diffraction; Plagioclase; Water quality; Water pollution; Ions; Degradation; Basins; Water quality standards; Soil; Classification; Groundwater; Agricultural runoff; Wastewater; Water Quality; Groundwater Basins; Groundwater Pollution; Wastewater Analysis; Pollution Index; India, Uttar Pradesh, Allahabad Dist.; India DO - http://dx.doi.org/10.1007/s10653-014-9638-z ER - TY - JOUR T1 - Observed multivariable signals of late 20th and early 21st century volcanic activity AN - 1696877106; 2015-069408 AB - The relatively muted warming of the surface and lower troposphere since 1998 has attracted considerable attention. One contributory factor to this "warming hiatus" is an increase in volcanically induced cooling over the early 21st century. Here we identify the signals of late 20th and early 21st century volcanic activity in multiple observed climate variables. Volcanic signals are statistically discernible in spatial averages of tropical and near-global SST, tropospheric temperature, net clear-sky short-wave radiation, and atmospheric water vapor. Signals of late 20th and early 21st century volcanic eruptions are also detectable in near-global averages of rainfall. In tropical average rainfall, however, only a Pinatubo-caused drying signal is identifiable. Successful volcanic signal detection is critically dependent on removal of variability induced by the El Nino-Southern Oscillation. Abstract Copyright (2014), American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Santer, Benjamin D AU - Solomon, Susan AU - Bonfils, Celine AU - Zelinka, Mark D AU - Painter, Jeffrey F AU - Beltran, Francisco AU - Fyfe, John C AU - Johannesson, Gardar AU - Mears, Carl AU - Ridley, David A AU - Vernier, Jean-Paul AU - Wentz, Frank J Y1 - 2015/01/28/ PY - 2015 DA - 2015 Jan 28 SP - 500 EP - 509 PB - American Geophysical Union, Washington, DC VL - 42 IS - 2 SN - 0094-8276, 0094-8276 KW - atmospheric circulation KW - ocean circulation KW - El Nino Southern Oscillation KW - volcanism KW - eruptions KW - climate effects KW - atmosphere KW - sea-surface temperature KW - climate change KW - temperature KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696877106?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=Observed+multivariable+signals+of+late+20th+and+early+21st+century+volcanic+activity&rft.au=Santer%2C+Benjamin+D%3BSolomon%2C+Susan%3BBonfils%2C+Celine%3BZelinka%2C+Mark+D%3BPainter%2C+Jeffrey+F%3BBeltran%2C+Francisco%3BFyfe%2C+John+C%3BJohannesson%2C+Gardar%3BMears%2C+Carl%3BRidley%2C+David+A%3BVernier%2C+Jean-Paul%3BWentz%2C+Frank+J&rft.aulast=Santer&rft.aufirst=Benjamin&rft.date=2015-01-28&rft.volume=42&rft.issue=2&rft.spage=500&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2014GL062366 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 22 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2015-07-17 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - atmosphere; atmospheric circulation; climate change; climate effects; El Nino Southern Oscillation; eruptions; ocean circulation; sea-surface temperature; temperature; volcanism DO - http://dx.doi.org/10.1002/2014GL062366 ER - TY - JOUR T1 - Efficient meltwater drainage through supraglacial streams and rivers on the southwest Greenland ice sheet AN - 1832682408; 768416-4 JF - Proceedings of the National Academy of Sciences of the United States of America AU - Smith, Laurence C AU - Chu, Vena W AU - Yang, Kang AU - Gleason, Clin J AU - Pitcher, Lincoln H AU - Rennermalm, Asa K AU - Legleiter, Carl J AU - Behar, Alberto AU - Overstreet, Brandon T AU - Moustafa, Samiah E AU - Tedesco, Marco AU - Forster, Richard R AU - LeWinter, Adam L AU - Finnegan, David C AU - Sheng, Yongwei AU - Balog, James Y1 - 2015/01/27/ PY - 2015 DA - 2015 Jan 27 SP - 1001 EP - 1006 PB - National Academy of Sciences, Washington, DC VL - 112 IS - 4 SN - 0027-8424, 0027-8424 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832682408?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+of+the+National+Academy+of+Sciences+of+the+United+States+of+America&rft.atitle=Efficient+meltwater+drainage+through+supraglacial+streams+and+rivers+on+the+southwest+Greenland+ice+sheet&rft.au=Smith%2C+Laurence+C%3BChu%2C+Vena+W%3BYang%2C+Kang%3BGleason%2C+Clin+J%3BPitcher%2C+Lincoln+H%3BRennermalm%2C+Asa+K%3BLegleiter%2C+Carl+J%3BBehar%2C+Alberto%3BOverstreet%2C+Brandon+T%3BMoustafa%2C+Samiah+E%3BTedesco%2C+Marco%3BForster%2C+Richard+R%3BLeWinter%2C+Adam+L%3BFinnegan%2C+David+C%3BSheng%2C+Yongwei%3BBalog%2C+James&rft.aulast=Smith&rft.aufirst=Laurence&rft.date=2015-01-27&rft.volume=112&rft.issue=4&rft.spage=1001&rft.isbn=&rft.btitle=&rft.title=Proceedings+of+the+National+Academy+of+Sciences+of+the+United+States+of+America&rft.issn=00278424&rft_id=info:doi/10.1073%2Fpnas.1413024112 L2 - http://www.pnas.org/content/by/year LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 33 N1 - PubXState - DC N1 - Last updated - 2017-01-24 DO - http://dx.doi.org/10.1073/pnas.1413024112 ER - TY - JOUR T1 - The imprint of atmospheric evolution in the D/H of Hesperian clay minerals on Mars AN - 1680752849; 2015-041999 AB - The deuterium-to-hydrogen (D/H) ratio in strongly bound water or hydroxyl groups in ancient martian clays retains the imprint of the water of formation of these minerals. Curiosity's Sample Analysis at Mars (SAM) experiment measured thermally evolved water and hydrogen gas released between 550 degrees and 950 degrees C from samples of Hesperian-era Gale crater smectite to determine this isotope ratio. The D/H value is 3.0 (+ or -0.2) times the ratio in standard mean ocean water. The D/H ratio in this approximately 3-billion-year-old mudstone, which is half that of the present martian atmosphere but substantially higher than that expected in very early Mars, indicates an extended history of hydrogen escape and desiccation of the planet. JF - Science AU - Mahaffy, Paul R AU - Webster, C R AU - Stern, J C AU - Brunner, A E AU - Atreya, Sushil K AU - Conrad, Pamela G AU - Domagal-Goldman, S AU - Eigenbrode, Jennifer L AU - Flesch, G J AU - Christensen, Lance E AU - Franz, H B AU - Freissinet, Caroline AU - Glavin, Daniel P AU - Grotzinger, J P AU - Jones, J H AU - Leshin, L A AU - Malespin, C AU - McAdam, A C AU - Ming, D W AU - Navarro-Gonzalez, Rafael AU - Niles, P B AU - Owen, T AU - Pavlov, Alexander A AU - Steele, Andrew AU - Trainer, M G AU - Williford, K H AU - Wray, J J Y1 - 2015/01/23/ PY - 2015 DA - 2015 Jan 23 SP - 412 EP - 414 PB - American Association for the Advancement of Science, Washington, DC VL - 347 IS - 6220 SN - 0036-8075, 0036-8075 KW - silicates KW - mudstone KW - isotopes KW - isotope ratios KW - Mars KW - Hesperian KW - stable isotopes KW - Gale Crater KW - clay minerals KW - terrestrial planets KW - planets KW - hydroxyl ion KW - sedimentary rocks KW - paleoenvironment KW - D/H KW - hydrogen KW - Curiosity Rover KW - sheet silicates KW - clastic rocks KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680752849?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science&rft.atitle=The+imprint+of+atmospheric+evolution+in+the+D%2FH+of+Hesperian+clay+minerals+on+Mars&rft.au=Mahaffy%2C+Paul+R%3BWebster%2C+C+R%3BStern%2C+J+C%3BBrunner%2C+A+E%3BAtreya%2C+Sushil+K%3BConrad%2C+Pamela+G%3BDomagal-Goldman%2C+S%3BEigenbrode%2C+Jennifer+L%3BFlesch%2C+G+J%3BChristensen%2C+Lance+E%3BFranz%2C+H+B%3BFreissinet%2C+Caroline%3BGlavin%2C+Daniel+P%3BGrotzinger%2C+J+P%3BJones%2C+J+H%3BLeshin%2C+L+A%3BMalespin%2C+C%3BMcAdam%2C+A+C%3BMing%2C+D+W%3BNavarro-Gonzalez%2C+Rafael%3BNiles%2C+P+B%3BOwen%2C+T%3BPavlov%2C+Alexander+A%3BSteele%2C+Andrew%3BTrainer%2C+M+G%3BWilliford%2C+K+H%3BWray%2C+J+J&rft.aulast=Mahaffy&rft.aufirst=Paul&rft.date=2015-01-23&rft.volume=347&rft.issue=6220&rft.spage=412&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.1260291 L2 - http://www.sciencemag.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 49 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2016-10-25 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - clastic rocks; clay minerals; Curiosity Rover; D/H; Gale Crater; Hesperian; hydrogen; hydroxyl ion; isotope ratios; isotopes; Mars; mudstone; paleoenvironment; planets; sedimentary rocks; sheet silicates; silicates; stable isotopes; terrestrial planets DO - http://dx.doi.org/10.1126/science.1260291 ER - TY - JOUR T1 - Mars methane detection and variability at Gale Crater AN - 1680751683; 2015-042000 AB - Reports of plumes or patches of methane in the Martian atmosphere that vary over monthly time scales have defied explanation to date. From in situ measurements made over a 20-month period by the tunable laser spectrometer of the Sample Analysis at Mars instrument suite on Curiosity at Gale crater, we report detection of background levels of atmospheric methane of mean value 0.69 + or - 0.25 parts per billion by volume (ppbv) at the 95% confidence interval (CI). This abundance is lower than model estimates of ultraviolet degradation of accreted interplanetary dust particles or carbonaceous chondrite material. Additionally, in four sequential measurements spanning a 60-sol period (where 1 sol is a martian day), we observed elevated levels of methane of 7.2 + or - 2.1 ppbv (95% CI), implying that Mars is episodically producing methane from an additional unknown source. JF - Science AU - Webster, Christopher R AU - Mahaffy, Paul R AU - Atreya, Sushil K AU - Flesch, Gregory J AU - Mischna, Michael A AU - Meslin, Pierre-Yves AU - Farley, Kenneth A AU - Conrad, Pamela G AU - Christensen, Lance E AU - Pavlov, Alexander A AU - Martin-Torres, Javier AU - Zorzano, Maria-Paz AU - McConnochie, Timothy H AU - Owen, Tobias AU - Eigenbrode, Jennifer L AU - Glavin, Daniel P AU - Steele, Andrew AU - Malespin, Charles A AU - Archer, P Douglas, Jr AU - Sutter, Brad AU - Coll, Patrice AU - Freissinet, Caroline AU - McKay, Christopher P AU - Moores, John E AU - Schwenzer, Susanne P AU - Bridges, John C AU - Navarro-Gonzalez, Rafael AU - Gellert, Ralf AU - Lemmon, Mark T Y1 - 2015/01/23/ PY - 2015 DA - 2015 Jan 23 SP - 415 EP - 417 PB - American Association for the Advancement of Science, Washington, DC VL - 347 IS - 6220 SN - 0036-8075, 0036-8075 KW - plumes KW - methane KW - aliphatic hydrocarbons KW - atmosphere KW - Mars KW - alkanes KW - variations KW - measurement KW - Gale Crater KW - terrestrial planets KW - planets KW - organic compounds KW - detection KW - Curiosity Rover KW - hydrocarbons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680751683?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science&rft.atitle=Mars+methane+detection+and+variability+at+Gale+Crater&rft.au=Webster%2C+Christopher+R%3BMahaffy%2C+Paul+R%3BAtreya%2C+Sushil+K%3BFlesch%2C+Gregory+J%3BMischna%2C+Michael+A%3BMeslin%2C+Pierre-Yves%3BFarley%2C+Kenneth+A%3BConrad%2C+Pamela+G%3BChristensen%2C+Lance+E%3BPavlov%2C+Alexander+A%3BMartin-Torres%2C+Javier%3BZorzano%2C+Maria-Paz%3BMcConnochie%2C+Timothy+H%3BOwen%2C+Tobias%3BEigenbrode%2C+Jennifer+L%3BGlavin%2C+Daniel+P%3BSteele%2C+Andrew%3BMalespin%2C+Charles+A%3BArcher%2C+P+Douglas%2C+Jr%3BSutter%2C+Brad%3BColl%2C+Patrice%3BFreissinet%2C+Caroline%3BMcKay%2C+Christopher+P%3BMoores%2C+John+E%3BSchwenzer%2C+Susanne+P%3BBridges%2C+John+C%3BNavarro-Gonzalez%2C+Rafael%3BGellert%2C+Ralf%3BLemmon%2C+Mark+T&rft.aulast=Webster&rft.aufirst=Christopher&rft.date=2015-01-23&rft.volume=347&rft.issue=6220&rft.spage=415&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.1261713 L2 - http://www.sciencemag.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 42 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2016-10-25 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; atmosphere; Curiosity Rover; detection; Gale Crater; hydrocarbons; Mars; measurement; methane; organic compounds; planets; plumes; terrestrial planets; variations DO - http://dx.doi.org/10.1126/science.1261713 ER - TY - JOUR T1 - Satellite radar altimetry for monitoring small rivers and lakes in Indonesia AN - 1668246031; PQ0001282750 AB - Remote sensing and satellite geodetic observations are capable of hydrologic monitoring of freshwater resources. Although satellite radar altimetry has been used in monitoring water level or discharge, its use is often limited to monitoring large rivers (>1 km) with longer interval periods (>1 week) because of its low temporal and spatial resolutions (i.e., satellite revisit period). Several studies have reported successful retrieval of water levels for small rivers as narrow as 40 m. However, processing current satellite altimetry signals for such small water bodies to retrieve water levels accurately remains challenging. Physically, the radar signal returned by water bodies smaller than the satellite footprint is most likely contaminated by non-water surfaces, which may degrade the measurement quality. In order to address this scientific challenge, we carefully selected the waveform shapes corresponding to the range measurement resulting from standard retrackers for the European Space Agency's (ESA's) Envisat (Environmental Satellite) radar altimetry. We applied this approach to small (40-200 m in width) and medium-sized (200-800 m in width) rivers and small lakes (extent <1000 km2) in the humid tropics of Southeast Asia, specifically in Indonesia. This is the first study that explored the ability of satellite altimetry to monitor small water bodies in Indonesia. The major challenges in this study include the size of the water bodies that are much smaller than the nominal extent of the Envisat satellite footprint (e.g., ~250 m compared to ~1.7 km, respectively) and slightly smaller than the along-track distance (i.e., ~370 m). We addressed this challenge by optimally using geospatial information and optical remote sensing data to define the water bodies accurately, thus minimizing the probability of non-water contamination in the altimetry measurement. Considering that satellite altimetry processing may vary with different geographical regions, meteorological conditions, or hydrologic dynamic, we further evaluated the performance of all four Envisat standard retracking procedures. We found that satellite altimetry provided a good alternative or the only means in some regions of measuring the water level of medium-sized rivers and small lakes with high accuracy (root mean square error (RMSE) of 0.21-0.69 m and a correlation coefficient of 0.94-0.97). In contrast to previous studies, we found that the commonly used Ice-1 retracking algorithm was not necessarily the best retracker among the four standard waveform retracking algorithms for Envisat radar altimetry observing inland water bodies. As a recommendation, we propose to include the identification and selection of standard waveform shapes to complete the use of standard waveform retracking algorithms for Envisat radar altimetry data over small and medium-sized rivers and small lakes. JF - Hydrology and Earth System Sciences AU - Sulistioadi, Y B AU - Tseng, K-H AU - Shum, C K AU - Hidayat, H AU - Sumaryono, M AU - Suhardiman, A AU - Setiawan, F AU - Sunarso, S AD - Hydrological Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA Y1 - 2015/01/19/ PY - 2015 DA - 2015 Jan 19 SP - 341 EP - 359 PB - European Geosciences Union, c/o E.O.S.T. Strasbourg Cedex 67084 France VL - 19 IS - 1 SN - 1027-5606, 1027-5606 KW - Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Remote Sensing KW - ESA satellite, ENVISAT KW - Satellite altimetry KW - Inland waters KW - Indonesia KW - Algorithms KW - Correlations KW - Remote sensing KW - Water levels KW - Lakes KW - Southeast Asia KW - Meteorological conditions KW - Humid tropics KW - Satellite radar altimetry KW - Rivers KW - Satellite Technology KW - Mathematical models KW - European Space Agency KW - River discharge KW - Water Level KW - Altimetry KW - Radar KW - Radar altimetry KW - Standards KW - Monitoring KW - M2 556.53:Rivers, Streams, Canals (556.53) KW - AQ 00006:Sewage KW - SW 5040:Data acquisition KW - Q2 09171:Dynamics of lakes and rivers UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668246031?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrology+and+Earth+System+Sciences&rft.atitle=Satellite+radar+altimetry+for+monitoring+small+rivers+and+lakes+in+Indonesia&rft.au=Sulistioadi%2C+Y+B%3BTseng%2C+K-H%3BShum%2C+C+K%3BHidayat%2C+H%3BSumaryono%2C+M%3BSuhardiman%2C+A%3BSetiawan%2C+F%3BSunarso%2C+S&rft.aulast=Sulistioadi&rft.aufirst=Y&rft.date=2015-01-19&rft.volume=19&rft.issue=1&rft.spage=341&rft.isbn=&rft.btitle=&rft.title=Hydrology+and+Earth+System+Sciences&rft.issn=10275606&rft_id=info:doi/10.5194%2Fhess-19-341-2015 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-03-01 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Satellite altimetry; Water levels; Inland waters; Lakes; Mathematical models; River discharge; Remote sensing; Radar altimetry; Altimetry; ESA satellite, ENVISAT; Rivers; European Space Agency; Radar; Correlations; Algorithms; Meteorological conditions; Humid tropics; Satellite radar altimetry; Remote Sensing; Satellite Technology; Standards; Water Level; Monitoring; Indonesia; Southeast Asia DO - http://dx.doi.org/10.5194/hess-19-341-2015 ER - TY - JOUR T1 - A sinuous tumulus over an active lava tube at Kilauea Volcano; evolution, analogs, and hazard forecasts AN - 1668233432; 2015-029753 AB - Inflation of narrow tube-fed basaltic lava flows (tens of meters across), such as those confined by topography, can be focused predominantly along the roof of a lava tube. This can lead to the development of an unusually long tumulus, its shape matching the sinuosity of the underlying lava tube. Such a situation occurred during Kilauea Volcano's (Hawai'i, USA) ongoing East Rift Zone eruption on a lava tube active from July through November 2010. Short-lived breakouts from the tube buried the flanks of the sinuous, ridge-like tumulus, while the tumulus crest, its surface composed of lava formed very early in the flow's emplacement history, remained poised above the surrounding younger flows. At least several of these breakouts resulted in irrecoverable uplift of the tube roof. Confined sections of the prehistoric Carrizozo and McCartys flows (New Mexico, USA) display similar sinuous, ridge-like features with comparable surface age relationships. We contend that these distinct features formed in a fashion equivalent to that of the sinuous tumulus that formed at Kilauea in 2010. Moreover, these sinuous tumuli may be analogs for some sinuous ridges evident in orbital images of the Tharsis volcanic province on Mars. The short-lived breakouts from the sinuous tumulus at Kilauea were caused by surges in discharge through the lava tube, in response to cycles of deflation and inflation (DI events) at Kilauea's summit. The correlation between DI events and subsequent breakouts aided in lava flow forecasting. Breakouts from the sinuous tumulus advanced repeatedly toward the sparsely populated Kalapana Gardens subdivision, destroying two homes and threatening others. Hazard assessments, including flow occurrence and advance forecasts, were relayed regularly to the Hawai'i County Civil Defense to aid their lava flow hazard mitigation efforts while this lava tube was active. Abstract Copyright (2015) Elsevier, B.V. JF - Journal of Volcanology and Geothermal Research AU - Orr, Tim R AU - Bleacher, Jacob E AU - Patrick, Matthew R AU - Wooten, Kelly M Y1 - 2015/01/15/ PY - 2015 DA - 2015 Jan 15 SP - 35 EP - 48 PB - Elsevier, Amsterdam VL - 291 SN - 0377-0273, 0377-0273 KW - United States KW - precursors KW - Hawaii Island KW - geologic hazards KW - Mars KW - New Mexico KW - mitigation KW - lava tubes KW - volcanic features KW - topography KW - Kilauea KW - basaltic composition KW - lava flows KW - Hawaii County Hawaii KW - tumulus KW - cyclic processes KW - prediction KW - Hawaii KW - East Pacific Ocean Islands KW - terrestrial planets KW - morphology KW - planets KW - volcanic risk KW - eruptions KW - Oceania KW - natural hazards KW - volcanoes KW - risk assessment KW - Polynesia KW - sinuosity KW - Tharsis KW - 24:Quaternary geology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668233432?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Volcanology+and+Geothermal+Research&rft.atitle=A+sinuous+tumulus+over+an+active+lava+tube+at+Kilauea+Volcano%3B+evolution%2C+analogs%2C+and+hazard+forecasts&rft.au=Orr%2C+Tim+R%3BBleacher%2C+Jacob+E%3BPatrick%2C+Matthew+R%3BWooten%2C+Kelly+M&rft.aulast=Orr&rft.aufirst=Tim&rft.date=2015-01-15&rft.volume=291&rft.issue=&rft.spage=35&rft.isbn=&rft.btitle=&rft.title=Journal+of+Volcanology+and+Geothermal+Research&rft.issn=03770273&rft_id=info:doi/10.1016%2Fj.jvolgeores.2014.12.002 L2 - http://www.sciencedirect.com/science/journal/03770273 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2015-01-01 N1 - Number of references - 72 N1 - Document feature - illus. incl. 2 tables, geol. sketch maps N1 - Last updated - 2015-04-02 N1 - CODEN - JVGRDQ N1 - SubjectsTermNotLitGenreText - basaltic composition; cyclic processes; East Pacific Ocean Islands; eruptions; geologic hazards; Hawaii; Hawaii County Hawaii; Hawaii Island; Kilauea; lava flows; lava tubes; Mars; mitigation; morphology; natural hazards; New Mexico; Oceania; planets; Polynesia; precursors; prediction; risk assessment; sinuosity; terrestrial planets; Tharsis; topography; tumulus; United States; volcanic features; volcanic risk; volcanoes DO - http://dx.doi.org/10.1016/j.jvolgeores.2014.12.002 ER - TY - JOUR T1 - Late formation of a comet Wild 2 crystalline silicate particle, Pyxie, inferred from Al-Mg chronology of plagioclase AN - 1656038632; 2015-013812 AB - We examined the Al-Mg isotope systematics of plagioclase in a FeO-poor ferromagnesian Wild 2 particle (C2092,7,81,1,0; named Pyxie) using a approximately 2 mu m spot. Three analyses show average (super 27) Al/ (super 24) Mg ratio of approximately 65 and excess delta (super 26) Mg (super *) value of +0.1+ or -4.5 ppm (2sigma ), indicating no resolvable (super 26) Mg excess in the particle. The inferred initial ( (super 26) Al/ (super 27) Al) (sub 0) ratio of plagioclase in Pyxie is estimated as (-0.6+ or -4.5)X10 (super -6) with an upper limit of 4 X 10 (super -6) . The result is very similar to that of the FeO-rich ferromagnesian particle "Iris" (Ogliore et al., 2012). Assuming homogeneous distribution of (super 26) Al in the early solar system, Pyxie formed at least 2.6 Ma after the oldest Ca-Al-rich inclusions. This minimum formation age is marginally younger than formation ages of most chondrules in type approximately 3.0 chondrites but comparable with those of Mg# < 98 chondrules in CR3 chondrites. Considered in conjunction with similar oxygen isotope ratios between Pyxie (and Iris) and Mg# < 98 chondrules in CR3 chondrites, it is inferred that the ferromagnesian Wild 2 particles and Mg# < 98 chondrules in CR3 chondrites formed late in local disk environments that had similar oxygen isotope ratios and redox states. Abstract Copyright (2015) Elsevier, B.V. JF - Earth and Planetary Science Letters AU - Nakashima, Daisuke AU - Ushikubo, Takayuki AU - Kita, Noriko T AU - Weisberg, Michael K AU - Zolensky, Michael E AU - Ebel, Denton S Y1 - 2015/01/15/ PY - 2015 DA - 2015 Jan 15 SP - 54 EP - 61 PB - Elsevier, Amsterdam VL - 410 SN - 0012-821X, 0012-821X KW - silicates KW - magnesium KW - stony meteorites KW - oxygen KW - ion probe data KW - isotopes KW - mass spectra KW - stable isotopes KW - meteorites KW - radioactive isotopes KW - CR chondrites KW - chronology KW - aluminum KW - Wild 2 Comet KW - framework silicates KW - Al-27/Al-26 KW - spectra KW - heterogeneity KW - chondrites KW - Eh KW - O-17/O-16 KW - alkaline earth metals KW - plagioclase KW - isotope ratios KW - carbonaceous chondrites KW - Al/Mg KW - early solar system KW - comets KW - Mg-26/Mg-24 KW - metals KW - chondrules KW - feldspar group KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656038632?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Earth+and+Planetary+Science+Letters&rft.atitle=Late+formation+of+a+comet+Wild+2+crystalline+silicate+particle%2C+Pyxie%2C+inferred+from+Al-Mg+chronology+of+plagioclase&rft.au=Nakashima%2C+Daisuke%3BUshikubo%2C+Takayuki%3BKita%2C+Noriko+T%3BWeisberg%2C+Michael+K%3BZolensky%2C+Michael+E%3BEbel%2C+Denton+S&rft.aulast=Nakashima&rft.aufirst=Daisuke&rft.date=2015-01-15&rft.volume=410&rft.issue=&rft.spage=54&rft.isbn=&rft.btitle=&rft.title=Earth+and+Planetary+Science+Letters&rft.issn=0012821X&rft_id=info:doi/10.1016%2Fj.epsl.2014.11.020 L2 - http://www.sciencedirect.com/science/journal/0012821X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2015-01-01 N1 - Number of references - 86 N1 - Document feature - illus. incl. 2 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-02-19 N1 - CODEN - EPSLA2 N1 - SubjectsTermNotLitGenreText - Al-27/Al-26; Al/Mg; alkaline earth metals; aluminum; carbonaceous chondrites; chondrites; chondrules; chronology; comets; CR chondrites; early solar system; Eh; feldspar group; framework silicates; heterogeneity; ion probe data; isotope ratios; isotopes; magnesium; mass spectra; metals; meteorites; Mg-26/Mg-24; O-17/O-16; oxygen; plagioclase; radioactive isotopes; silicates; spectra; stable isotopes; stony meteorites; Wild 2 Comet DO - http://dx.doi.org/10.1016/j.epsl.2014.11.020 ER - TY - JOUR T1 - The surface compositions of Pluto and Charon AN - 1656038385; 2015-013742 AB - The surface of Pluto as it is understood on the eve of the encounter of the New Horizons spacecraft (mid-2015) consists of a spatially heterogeneous mix of solid N (sub 2) , CH (sub 4) , CO, C (sub 2) H (sub 6) , and an additional component that imparts color, and may not be an ice. The known molecular ices are detected by near-infrared spectroscopy. The N (sub 2) ice occurs in the hexagonal crystalline beta -phase, stable at T > 35.6 K. Spectroscopic evidence for wavelength shifts in the CH4 bands attests to the complex mixing of CH (sub 4) and N (sub 2) in the solid state, in accordance with the phase diagram for N (sub 2) + CH (sub 4) . Spectra obtained at several aspects of Pluto's surface as the planet rotates over its 6.4-day period show variability in the distribution of CH (sub 4) and N (sub 2) ices, with stronger CH (sub 4) absorption bands associated with regions of higher albedo, in correlation with the visible rotational light curve. CO and N2 ice absorptions are also strongly modulated by the rotation period; the bands are strongest on the anti-Charon hemisphere of Pluto. Longer term changes in the strengths of Pluto's absorption bands occur as the viewing geometry changes on seasonal time-scales, although a complete cycle has not been observed. The non-ice component of Pluto's surface may be a relatively refractory material produced by the UV and cosmic-ray irradiation of the surface ices and gases in the atmosphere, although UV does not generally penetrate the atmospheric CH (sub 4) to interact with the surface. Laboratory simulations indicate that a rich chemistry ensues by the irradiation of mixtures of the ices known to occur on Pluto, but specific compounds have not yet been identified in spectra of the planet. Charon's surface is characterized by spectral bands of crystalline H (sub 2) O ice, and a band attributed to one or more hydrates of NH (sub 3) . Amorphous H (sub 2) O ice may also be present; the balance between the amorphization and crystallization processes on Charon remains to be clarified. The albedo of Charon and its generally spatially uniform neutral color indicate that a component, not yet identified, is mixed in some way with the H (sub 2) O and NH (sub 3) .nH (sub 2) O ices. Among the many known small bodies in the transneptunian region, several share characteristics with Pluto and Charon, including the presence of CH (sub 4) , N (sub 2) , C (sub 2) H (sub 6) , H (sub 2) O ices, as well as components that yield a wide variety of surface albedo and color. The New Horizons investigation of the Pluto-Charon system will generate new insight into the physical properties of the broader transneptunian population, and eventually to the corresponding bodies expected in the numerous planetary systems currently being discovered elsewhere in the Galaxy. JF - Icarus AU - Cruikshank, Dale P AU - Grundy, William M AU - DeMeo, Francesca E AU - Buie, Marc W AU - Binzel, Richard P AU - Jennings, D E AU - Olkin, Catherine B AU - Parker, J W AU - Reuter, Dennis C AU - Spencer, J R AU - Stern, S Alan AU - Young, Leslie A AU - Weaver, Harold A Y1 - 2015/01/15/ PY - 2015 DA - 2015 Jan 15 SP - 82 EP - 92 PB - Elsevier, New York, NY VL - 246 SN - 0019-1035, 0019-1035 KW - hydrates KW - albedo KW - near-infrared spectra KW - irradiation KW - aliphatic hydrocarbons KW - ethane KW - simulation KW - dwarf planets KW - nitrogen KW - laboratory studies KW - phase equilibria KW - electromagnetic radiation KW - rotation KW - ice KW - composition KW - cosmic rays KW - spectra KW - New Horizons Mission KW - water KW - surface properties KW - experimental studies KW - methane KW - amorphous materials KW - atmosphere KW - alkanes KW - ultraviolet radiation KW - gases KW - carbon monoxide KW - physical properties KW - organic compounds KW - hydrocarbons KW - Charon KW - crystallization KW - seasonal variations KW - Pluto KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656038385?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=The+surface+compositions+of+Pluto+and+Charon&rft.au=Cruikshank%2C+Dale+P%3BGrundy%2C+William+M%3BDeMeo%2C+Francesca+E%3BBuie%2C+Marc+W%3BBinzel%2C+Richard+P%3BJennings%2C+D+E%3BOlkin%2C+Catherine+B%3BParker%2C+J+W%3BReuter%2C+Dennis+C%3BSpencer%2C+J+R%3BStern%2C+S+Alan%3BYoung%2C+Leslie+A%3BWeaver%2C+Harold+A&rft.aulast=Cruikshank&rft.aufirst=Dale&rft.date=2015-01-15&rft.volume=246&rft.issue=&rft.spage=82&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.05.023 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 139 N1 - PubXState - NY N1 - Document feature - illus. N1 - Last updated - 2015-02-19 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - albedo; aliphatic hydrocarbons; alkanes; amorphous materials; atmosphere; carbon monoxide; Charon; composition; cosmic rays; crystallization; dwarf planets; electromagnetic radiation; ethane; experimental studies; gases; hydrates; hydrocarbons; ice; irradiation; laboratory studies; methane; near-infrared spectra; New Horizons Mission; nitrogen; organic compounds; phase equilibria; physical properties; Pluto; rotation; seasonal variations; simulation; spectra; surface properties; ultraviolet radiation; water DO - http://dx.doi.org/10.1016/j.icarus.2014.05.023 ER - TY - JOUR T1 - The interior and orbital evolution of Charon as preserved in its geologic record AN - 1656037184; 2015-013737 AB - Pluto and its largest satellite, Charon, currently orbit in a mutually synchronous state; both bodies continuously show the same face to one another. This orbital configuration is a natural end-state for bodies that have undergone tidal dissipation. In order to achieve this state, both bodies would have experienced tidal heating and stress, with the extent of tidal activity controlled by the orbital evolution of Pluto and Charon and by the interior structure and rheology of each body. As the secondary, Charon would have experienced a larger tidal response than Pluto, which may have manifested as observable tectonism. Unfortunately, there are few constraints on the interiors of Pluto and Charon. In addition, the pathway by which Charon came to occupy its present orbital state is uncertain. If Charon's orbit experienced a high-eccentricity phase, as suggested by some orbital evolution models, tidal effects would have likely been more significant. Therefore, we determine the conditions under which Charon could have experienced tidally-driven geologic activity and the extent to which upcoming New Horizons spacecraft observations could be used to constrain Charon's internal structure and orbital evolution. Using plausible interior structure models that include an ocean layer, we find that tidally-driven tensile fractures would likely have formed on Charon if its eccentricity were on the order of 0.01, especially if Charon were orbiting closer to Pluto than at present. Such fractures could display a variety of azimuths near the equator and near the poles, with the range of azimuths in a given region dependent on longitude; east-west-trending fractures should dominate at mid-latitudes. The fracture patterns we predict indicate that Charon's surface geology could provide constraints on the thickness and viscosity of Charon's ice shell at the time of fracture formation. JF - Icarus AU - Rhoden, Alyssa Rose AU - Henning, Wade AU - Hurford, Terry A AU - Hamilton, Douglas P Y1 - 2015/01/15/ PY - 2015 DA - 2015 Jan 15 SP - 11 EP - 20 PB - Elsevier, New York, NY VL - 246 SN - 0019-1035, 0019-1035 KW - obliquity of the ecliptic KW - orbits KW - subsurface ocean KW - tidal heating KW - eccentricity KW - fractures KW - dynamics KW - rotation KW - thickness KW - tectonics KW - faults KW - New Horizons Mission KW - ductile deformation KW - patterns KW - stress KW - brittle deformation KW - deformation KW - synchronous orbits KW - tides KW - viscosity KW - planetary interiors KW - Charon KW - latitude KW - ice shells KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656037184?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=The+interior+and+orbital+evolution+of+Charon+as+preserved+in+its+geologic+record&rft.au=Rhoden%2C+Alyssa+Rose%3BHenning%2C+Wade%3BHurford%2C+Terry+A%3BHamilton%2C+Douglas+P&rft.aulast=Rhoden&rft.aufirst=Alyssa&rft.date=2015-01-15&rft.volume=246&rft.issue=&rft.spage=11&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.04.030 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 82 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-04-16 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - brittle deformation; Charon; deformation; ductile deformation; dynamics; eccentricity; faults; fractures; ice shells; latitude; New Horizons Mission; obliquity of the ecliptic; orbits; patterns; planetary interiors; rotation; stress; subsurface ocean; synchronous orbits; tectonics; thickness; tidal heating; tides; viscosity DO - http://dx.doi.org/10.1016/j.icarus.2014.04.030 ER - TY - JOUR T1 - New Horizons; long-range Kuiper Belt targets observed by the Hubble Space Telescope AN - 1656036909; 2015-013757 AB - We report on Hubble Space Telescope (HST) observations of three Kuiper Belt Objects (KBOs), discovered in our dedicated ground-based search campaign, that are candidates for long-range observations from the New Horizons spacecraft: 2011 JY (sub 31) , 2011 HZ (sub 102) , and 2013 LU (sub 35) . Astrometry with HST enables both current and future critical accuracy improvements for orbit precision, required for possible New Horizons observations, beyond what can be obtained from the ground. Photometric colors of all three objects are red, typical of the Cold Classical dynamical population within which they reside; they are also the faintest KBOs to have had their colors measured. None are observed to be binary with HST above separations of approximately 0.02 arcsec ( approximately 700 km at 44 AU) and Delta m < or = 0.5. JF - Icarus AU - Benecchi, Susan D AU - Noll, K S AU - Weaver, Harold A AU - Spencer, J R AU - Stern, S Alan AU - Buie, Marc W AU - Parker, A H Y1 - 2015/01/15/ PY - 2015 DA - 2015 Jan 15 SP - 369 EP - 374 PB - Elsevier, New York, NY VL - 246 SN - 0019-1035, 0019-1035 KW - astrometry KW - photometry KW - detection KW - binary objects KW - color KW - orbits KW - Kuiper Belt KW - Hubble Space Telescope KW - Kuiper Belt objects KW - size KW - New Horizons Mission KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656036909?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=New+Horizons%3B+long-range+Kuiper+Belt+targets+observed+by+the+Hubble+Space+Telescope&rft.au=Benecchi%2C+Susan+D%3BNoll%2C+K+S%3BWeaver%2C+Harold+A%3BSpencer%2C+J+R%3BStern%2C+S+Alan%3BBuie%2C+Marc+W%3BParker%2C+A+H&rft.aulast=Benecchi&rft.aufirst=Susan&rft.date=2015-01-15&rft.volume=246&rft.issue=&rft.spage=369&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.04.014 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 36 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2015-02-19 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - astrometry; binary objects; color; detection; Hubble Space Telescope; Kuiper Belt; Kuiper Belt objects; New Horizons Mission; orbits; photometry; size DO - http://dx.doi.org/10.1016/j.icarus.2014.04.014 ER - TY - JOUR T1 - Meteoritic evidence for a previously unrecognized hydrogen reservoir on Mars AN - 1656036762; 2015-013820 AB - Fluvial landforms on Mars suggest that it was once warm enough to maintain persistent liquid water on its surface. The transition to the present cold and dry Mars is closely linked to the history of surface water, yet the evolution of surficial water is poorly constrained. Based on in situ hydrogen isotope (D/H) analyses of quenched and impact glasses in Martian meteorites, we provide evidence for the existence of a distinct but ubiquitous water/ice reservoir (D/H = approximately 2-3 times Earth's ocean water) that lasted from at least the time when the meteorites crystallized (173-472 million years ago) to the time they were ejected by impacts (0.7-3.3 million years ago), but possibly much longer. The origin of this reservoir appears to predate the current Martian atmospheric water (D/H = approximately 5-6 times Earth's ocean water) and is unlikely to be a simple mixture of atmospheric and primordial water retained in the Martian mantle (D/H nearly equal Earth's ocean water). This reservoir could represent hydrated crust and/or ground ice interbedded within sediments. Our results corroborate the hypothesis that a buried cryosphere accounts for a large part of the initial water budget of Mars. Abstract Copyright (2015) Elsevier, B.V. JF - Earth and Planetary Science Letters AU - Usui, Tomohiro AU - Alexander, Conel M O'D AU - Wang, Jianhua AU - Simon, Justin I AU - Jones, John H Y1 - 2015/01/15/ PY - 2015 DA - 2015 Jan 15 SP - 140 EP - 151 PB - Elsevier, Amsterdam VL - 410 SN - 0012-821X, 0012-821X KW - stony meteorites KW - ion probe data KW - isotopes KW - Martian meteorites KW - mass spectra KW - mantle KW - Mars KW - Elephant Moraine Meteorites KW - stable isotopes KW - electron probe data KW - SNC Meteorites KW - meteorites KW - EETA 79001 KW - Y 980469 KW - chronology KW - major elements KW - ice KW - ground ice KW - spectra KW - Larkman Nunatak Meteorites KW - water KW - Yamato Meteorites KW - isotope ratios KW - atmosphere KW - achondrites KW - terrestrial planets KW - planets KW - hydration KW - volatiles KW - shergottite KW - LAR 06319 KW - D/H KW - hydrogen KW - crust KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656036762?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Earth+and+Planetary+Science+Letters&rft.atitle=Meteoritic+evidence+for+a+previously+unrecognized+hydrogen+reservoir+on+Mars&rft.au=Usui%2C+Tomohiro%3BAlexander%2C+Conel+M+O%27D%3BWang%2C+Jianhua%3BSimon%2C+Justin+I%3BJones%2C+John+H&rft.aulast=Usui&rft.aufirst=Tomohiro&rft.date=2015-01-15&rft.volume=410&rft.issue=&rft.spage=140&rft.isbn=&rft.btitle=&rft.title=Earth+and+Planetary+Science+Letters&rft.issn=0012821X&rft_id=info:doi/10.1016%2Fj.epsl.2014.11.022 L2 - http://www.sciencedirect.com/science/journal/0012821X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2015-01-01 N1 - Number of references - 75 N1 - Document feature - illus. incl. 3 tables, sketch maps N1 - Last updated - 2015-02-19 N1 - CODEN - EPSLA2 N1 - SubjectsTermNotLitGenreText - achondrites; atmosphere; chronology; crust; D/H; EETA 79001; electron probe data; Elephant Moraine Meteorites; ground ice; hydration; hydrogen; ice; ion probe data; isotope ratios; isotopes; LAR 06319; Larkman Nunatak Meteorites; major elements; mantle; Mars; Martian meteorites; mass spectra; meteorites; planets; shergottite; SNC Meteorites; spectra; stable isotopes; stony meteorites; terrestrial planets; volatiles; water; Y 980469; Yamato Meteorites DO - http://dx.doi.org/10.1016/j.epsl.2014.11.022 ER - TY - JOUR T1 - Geology before Pluto; pre-encounter considerations AN - 1656036672; 2015-013741 AB - The cameras of New Horizons will provide robust data sets that should be imminently amenable to geological analysis of the Pluto system's landscapes. In this paper, we begin with a brief discussion of the planned observations by the New Horizons cameras that will bear most directly on geological interpretability. Then we broadly review the major geological processes that could potentially operate on the surfaces of Pluto and its major moon Charon. We first survey exogenic processes (i.e. those for which energy for surface modification is supplied externally to the planetary surface): impact cratering, sedimentary processes (including volatile migration), and the work of wind. We conclude with an assessment of the prospects for endogenic activity in the form of tectonics and cryovolcanism. JF - Icarus AU - Moore, Jeffrey M AU - Howard, Alan D AU - Schenk, Paul M AU - McKinnon, William B AU - Pappalardo, Robert T AU - Ewing, Ryan C AU - Bierhaus, Edward B AU - Bray, Veronica J AU - Spencer, John R AU - Binzel, Richard P AU - Buratti, Bonnie AU - Grundy, William M AU - Olkin, Catherine B AU - Reitsema, Harold J AU - Reuter, Dennis C AU - Stern, S Alan AU - Weaver, Harold A AU - Young, Leslie A AU - Beyer, Ross A Y1 - 2015/01/15/ PY - 2015 DA - 2015 Jan 15 SP - 65 EP - 81 PB - Elsevier, New York, NY VL - 246 SN - 0019-1035, 0019-1035 KW - eolian features KW - cratering KW - icy satellites KW - cryovolcanism KW - impact features KW - diapirism KW - statistical analysis KW - landforms KW - thermal history KW - dwarf planets KW - morphology KW - planning KW - coordinate systems KW - composition KW - Charon KW - impact craters KW - tectonics KW - satellites KW - landscapes KW - Pluto KW - New Horizons Mission KW - cameras KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656036672?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Geology+before+Pluto%3B+pre-encounter+considerations&rft.au=Moore%2C+Jeffrey+M%3BHoward%2C+Alan+D%3BSchenk%2C+Paul+M%3BMcKinnon%2C+William+B%3BPappalardo%2C+Robert+T%3BEwing%2C+Ryan+C%3BBierhaus%2C+Edward+B%3BBray%2C+Veronica+J%3BSpencer%2C+John+R%3BBinzel%2C+Richard+P%3BBuratti%2C+Bonnie%3BGrundy%2C+William+M%3BOlkin%2C+Catherine+B%3BReitsema%2C+Harold+J%3BReuter%2C+Dennis+C%3BStern%2C+S+Alan%3BWeaver%2C+Harold+A%3BYoung%2C+Leslie+A%3BBeyer%2C+Ross+A&rft.aulast=Moore&rft.aufirst=Jeffrey&rft.date=2015-01-15&rft.volume=246&rft.issue=&rft.spage=65&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.04.028 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 131 N1 - PubXState - NY N1 - Document feature - illus. N1 - Last updated - 2015-02-19 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - cameras; Charon; composition; coordinate systems; cratering; cryovolcanism; diapirism; dwarf planets; eolian features; icy satellites; impact craters; impact features; landforms; landscapes; morphology; New Horizons Mission; planning; Pluto; satellites; statistical analysis; tectonics; thermal history DO - http://dx.doi.org/10.1016/j.icarus.2014.04.028 ER - TY - JOUR T1 - Carbonate formation events in ALH 84001 trace the evolution of the Martian atmosphere AN - 1832682380; 768414-3 JF - Proceedings of the National Academy of Sciences of the United States of America AU - Shaheen, Robina AU - Niles, Paul B AU - Chong, Kenneth AU - Corrigan, Catherine M AU - Thiemens, Mark H Y1 - 2015/01/13/ PY - 2015 DA - 2015 Jan 13 SP - 336 EP - 341 PB - National Academy of Sciences, Washington, DC VL - 112 IS - 2 SN - 0027-8424, 0027-8424 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832682380?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+of+the+National+Academy+of+Sciences+of+the+United+States+of+America&rft.atitle=Carbonate+formation+events+in+ALH+84001+trace+the+evolution+of+the+Martian+atmosphere&rft.au=Shaheen%2C+Robina%3BNiles%2C+Paul+B%3BChong%2C+Kenneth%3BCorrigan%2C+Catherine+M%3BThiemens%2C+Mark+H&rft.aulast=Shaheen&rft.aufirst=Robina&rft.date=2015-01-13&rft.volume=112&rft.issue=2&rft.spage=336&rft.isbn=&rft.btitle=&rft.title=Proceedings+of+the+National+Academy+of+Sciences+of+the+United+States+of+America&rft.issn=00278424&rft_id=info:doi/10.1073%2Fpnas.1315615112 L2 - http://www.pnas.org/content/by/year LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 35 N1 - PubXState - DC N1 - Last updated - 2017-01-24 DO - http://dx.doi.org/10.1073/pnas.1315615112 ER - TY - JOUR T1 - On the morphology and chemical composition of the HR 4796A debris disk AN - 1832596152; 720622-31 AB - We present resolved images of the HR 4796A debris disk using the Magellan adaptive optics system paired with Clio-2 and VisAO. We detect the disk at 0.77 mu m, 0.91 mu m, 0.99 mu m, 2.15 mu m, 3.1 mu m, 3.3 mu m, and 3.8 mu m. We find that the deprojected center of the ring is offset from the star by 4.76 + or - 1.6 AU and that the deprojected eccentricity is 0.06 + or - 0.02, in general agreement with previous studies. We find that the average width of the ring is 14 (sub IMG .../ (super (11.1 (sub IMG .../ (super AU), also comparable to previous measurements. Combining our new scattered light data with archival Hubble Space Telescope images at approximately 0.5-2 mu m, along with previously unpublished Spitzer/MIPS thermal emission data and all other literature thermal data, we set out to constrain the chemical composition of the dust grains. After testing 19 individual root compositions and more than 8400 unique mixtures of these compositions, we find that good fits to the scattered light alone and thermal emission alone are discrepant, suggesting that caution should be exercised if fitting to only one or the other. When we fit to both data sets simultaneously, we find that silicates and organics are generally the most favored, while large abundances of water ice are usually not favored. These results suggest the HR 4796A dust grains are similar to interstellar dust and solar system comets, though improved modeling is necessary to place better constraints on the exact chemical composition of the dust. Copyright (Copyright) 2015. The American Astronomical Society. All rights reserved. JF - The Astrophysical Journal AU - Rodigas, Timothy J AU - Stark, Christopher C AU - Weinberger, Alycia AU - Debes, John H AU - Hinz, Philip M AU - Close, Laird AU - Chen, Christine AU - Smith, Paul S AU - Males, Jared R AU - Skemer, Andrew J AU - Puglisi, Alfio AU - Follette, Katherine B AU - Morzinski, Katie AU - Wu, Ya-Lin AU - Briguglio, Runa AU - Esposito, Simone AU - Pinna, Enrico AU - Riccardi, Armando AU - Schneider, Glenn AU - Xompero, Marco Y1 - 2015/01/10/ PY - 2015 DA - 2015 Jan 10 EP - Paper no. 96 PB - IOP Publishing for American Astronomical Society, Bristol VL - 798 IS - 2 SN - 0004-637X, 0004-637X KW - silicates KW - HR 4796A star KW - optical spectra KW - data processing KW - olivine group KW - iron KW - infrared spectra KW - eccentricity KW - photometry KW - ice KW - olivine KW - orthosilicates KW - spectra KW - planetary systems KW - chemical composition KW - interstellar dust KW - water KW - solar system KW - extrasolar planets KW - telescope methods KW - debris disks KW - nesosilicates KW - morphology KW - planets KW - organic compounds KW - cosmic dust KW - comets KW - stars KW - metals KW - Hubble Space Telescope KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832596152?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Astrophysical+Journal&rft.atitle=On+the+morphology+and+chemical+composition+of+the+HR+4796A+debris+disk&rft.au=Rodigas%2C+Timothy+J%3BStark%2C+Christopher+C%3BWeinberger%2C+Alycia%3BDebes%2C+John+H%3BHinz%2C+Philip+M%3BClose%2C+Laird%3BChen%2C+Christine%3BSmith%2C+Paul+S%3BMales%2C+Jared+R%3BSkemer%2C+Andrew+J%3BPuglisi%2C+Alfio%3BFollette%2C+Katherine+B%3BMorzinski%2C+Katie%3BWu%2C+Ya-Lin%3BBriguglio%2C+Runa%3BEsposito%2C+Simone%3BPinna%2C+Enrico%3BRiccardi%2C+Armando%3BSchneider%2C+Glenn%3BXompero%2C+Marco&rft.aulast=Rodigas&rft.aufirst=Timothy&rft.date=2015-01-10&rft.volume=798&rft.issue=2&rft.spage=&rft.isbn=&rft.btitle=&rft.title=The+Astrophysical+Journal&rft.issn=0004637X&rft_id=info:doi/10.1088%2F0004-637X%2F798%2F2%2F96 L2 - http://iopscience.iop.org/0004-637X LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data supplied by IOP Publishing Ltd., London, United Kingdom N1 - Number of references - 118 N1 - Document feature - illus. incl. 2 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - chemical composition; comets; cosmic dust; data processing; debris disks; eccentricity; extrasolar planets; HR 4796A star; Hubble Space Telescope; ice; infrared spectra; interstellar dust; iron; metals; morphology; nesosilicates; olivine; olivine group; optical spectra; organic compounds; orthosilicates; photometry; planetary systems; planets; silicates; solar system; spectra; stars; telescope methods; water DO - http://dx.doi.org/10.1088/0004-637X/798/2/96 ER - TY - CPAPER T1 - Investigation of the Electrification of Pyrocumulus Clouds T2 - 95th American Meteorological Society Annual Meeting AN - 1658700494; 6336966 JF - 95th American Meteorological Society Annual Meeting AU - Lang, Timothy AU - LaRoche, K AU - Baum, B AU - Bateman, M AU - Mach, D Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Clouds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658700494?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Investigation+of+the+Electrification+of+Pyrocumulus+Clouds&rft.au=Lang%2C+Timothy%3BLaRoche%2C+K%3BBaum%2C+B%3BBateman%2C+M%3BMach%2C+D&rft.aulast=Lang&rft.aufirst=Timothy&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Multivariate Assimilation of Satellite-Derived Remote Sensing Datasets in the North American Land Data Assimilation System (NLDAS) T2 - 95th American Meteorological Society Annual Meeting AN - 1658700482; 6336814 JF - 95th American Meteorological Society Annual Meeting AU - Kumar, Sujay AU - Peters-Lidard, C AU - Mocko, D AU - Reichle, R AU - Arsenault, K AU - Zaitchik, B AU - Liu, Y AU - Ek, M. AU - Kato, H AU - Xia, Y Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - North America KW - Data collection KW - Data processing KW - Remote sensing UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658700482?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Multivariate+Assimilation+of+Satellite-Derived+Remote+Sensing+Datasets+in+the+North+American+Land+Data+Assimilation+System+%28NLDAS%29&rft.au=Kumar%2C+Sujay%3BPeters-Lidard%2C+C%3BMocko%2C+D%3BReichle%2C+R%3BArsenault%2C+K%3BZaitchik%2C+B%3BLiu%2C+Y%3BEk%2C+M.%3BKato%2C+H%3BXia%2C+Y&rft.aulast=Kumar&rft.aufirst=Sujay&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Experimental Products Development Team (EPDT) Supporting New AWIPS II Capabilities T2 - 95th American Meteorological Society Annual Meeting AN - 1658700446; 6336861 JF - 95th American Meteorological Society Annual Meeting AU - Burks, Jason Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Product development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658700446?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Experimental+Products+Development+Team+%28EPDT%29+Supporting+New+AWIPS+II+Capabilities&rft.au=Burks%2C+Jason&rft.aulast=Burks&rft.aufirst=Jason&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Towards Atmosphere-Ocean Coupled Assmilation with the Geos: Skin Sst Developments & Analysis of MW Observations T2 - 95th American Meteorological Society Annual Meeting AN - 1658700424; 6336479 JF - 95th American Meteorological Society Annual Meeting AU - Akella, Santha AU - Todling, R AU - Suarez, M AU - Jin, J AU - McCarty, W Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Skin UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658700424?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Towards+Atmosphere-Ocean+Coupled+Assmilation+with+the+Geos%3A+Skin+Sst+Developments+%26amp%3B+Analysis+of+MW+Observations&rft.au=Akella%2C+Santha%3BTodling%2C+R%3BSuarez%2C+M%3BJin%2C+J%3BMcCarty%2C+W&rft.aulast=Akella&rft.aufirst=Santha&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Data Recipes: Toward Creating How-To Knowledge Base for Earth Science Data T2 - 95th American Meteorological Society Annual Meeting AN - 1658700407; 6336764 JF - 95th American Meteorological Society Annual Meeting AU - Shen, Suhung AU - Lynnes, C AU - Acker, J AU - Beaty, T Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Data processing KW - Earth sciences UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658700407?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Data+Recipes%3A+Toward+Creating+How-To+Knowledge+Base+for+Earth+Science+Data&rft.au=Shen%2C+Suhung%3BLynnes%2C+C%3BAcker%2C+J%3BBeaty%2C+T&rft.aulast=Shen&rft.aufirst=Suhung&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Space Weather Research, Education and Development Initiative (Space Weather REDI): Hands-on Educational Opportunities at the Community Coordinated Modeling Center T2 - 95th American Meteorological Society Annual Meeting AN - 1658700405; 6336785 JF - 95th American Meteorological Society Annual Meeting AU - Kuznetsova, M AU - Zheng, Y AU - Pulkkinen, A AU - Collado-Vega, Y AU - Chulaki, A AU - Maddox, M AU - Mays, M AU - Taktakishvili, A AU - Shim, J AU - Rastaetter, L Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Weather KW - Education UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658700405?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Space+Weather+Research%2C+Education+and+Development+Initiative+%28Space+Weather+REDI%29%3A+Hands-on+Educational+Opportunities+at+the+Community+Coordinated+Modeling+Center&rft.au=Kuznetsova%2C+M%3BZheng%2C+Y%3BPulkkinen%2C+A%3BCollado-Vega%2C+Y%3BChulaki%2C+A%3BMaddox%2C+M%3BMays%2C+M%3BTaktakishvili%2C+A%3BShim%2C+J%3BRastaetter%2C+L&rft.aulast=Kuznetsova&rft.aufirst=M&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Python-Based Scientific Analysis and Visualization of Precipitation Systems at NASA Marshall Space Flight Center T2 - 95th American Meteorological Society Annual Meeting AN - 1658700395; 6336588 JF - 95th American Meteorological Society Annual Meeting AU - Lang, Timothy Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Space flight KW - Precipitation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658700395?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Python-Based+Scientific+Analysis+and+Visualization+of+Precipitation+Systems+at+NASA+Marshall+Space+Flight+Center&rft.au=Lang%2C+Timothy&rft.aulast=Lang&rft.aufirst=Timothy&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Assessing Disparities of Dengue Virus Transmission Risk across the US-Mexican Border Using a Climate Driven Vector-Epidemiological Model T2 - 95th American Meteorological Society Annual Meeting AN - 1658700291; 6336796 JF - 95th American Meteorological Society Annual Meeting AU - Morin, Cory AU - Monaghan, A AU - Crosson, W AU - Quattrochi, D AU - Hayden, M AU - Ernst, K Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Risk assessment KW - Dengue KW - Climate KW - Models KW - Disease transmission KW - Dengue virus UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658700291?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Assessing+Disparities+of+Dengue+Virus+Transmission+Risk+across+the+US-Mexican+Border+Using+a+Climate+Driven+Vector-Epidemiological+Model&rft.au=Morin%2C+Cory%3BMonaghan%2C+A%3BCrosson%2C+W%3BQuattrochi%2C+D%3BHayden%2C+M%3BErnst%2C+K&rft.aulast=Morin&rft.aufirst=Cory&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Cloud-Based Numerical Weather Prediction for Near Real-time Forecasting and Disaster Response T2 - 95th American Meteorological Society Annual Meeting AN - 1658700259; 6336552 JF - 95th American Meteorological Society Annual Meeting AU - Molthan, Andrew AU - Case, J AU - Venner, J AU - Schroeder, R AU - Checchi, M AU - Zavodsky, B AU - O'Brien, R Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Prediction KW - Disasters KW - Weather forecasting UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658700259?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Cloud-Based+Numerical+Weather+Prediction+for+Near+Real-time+Forecasting+and+Disaster+Response&rft.au=Molthan%2C+Andrew%3BCase%2C+J%3BVenner%2C+J%3BSchroeder%2C+R%3BChecchi%2C+M%3BZavodsky%2C+B%3BO%27Brien%2C+R&rft.aulast=Molthan&rft.aufirst=Andrew&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Variability of Turbulence Potentials along the Trans-Atlantic Wind-Optimal Flight Route T2 - 95th American Meteorological Society Annual Meeting AN - 1658700186; 6337023 JF - 95th American Meteorological Society Annual Meeting AU - Kim, Jung-Hoon AU - Chan, W AU - Sridhar, B AU - Sharman, R AU - Williams, P Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Flight KW - Turbulence UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658700186?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Variability+of+Turbulence+Potentials+along+the+Trans-Atlantic+Wind-Optimal+Flight+Route&rft.au=Kim%2C+Jung-Hoon%3BChan%2C+W%3BSridhar%2C+B%3BSharman%2C+R%3BWilliams%2C+P&rft.aulast=Kim&rft.aufirst=Jung-Hoon&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - The NASA Modern Era Reanalysis for Research and Applications, Version-2 (MERRA-2) T2 - 95th American Meteorological Society Annual Meeting AN - 1658700138; 6336715 JF - 95th American Meteorological Society Annual Meeting AU - Gelaro, Ronald AU - McCarty, W AU - Molod, A AU - Suarez, M AU - Takacs, L AU - Todling, R Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Meteorology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658700138?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=The+NASA+Modern+Era+Reanalysis+for+Research+and+Applications%2C+Version-2+%28MERRA-2%29&rft.au=Gelaro%2C+Ronald%3BMcCarty%2C+W%3BMolod%2C+A%3BSuarez%2C+M%3BTakacs%2C+L%3BTodling%2C+R&rft.aulast=Gelaro&rft.aufirst=Ronald&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Using Historical Ensembles for Context in an African Food and Water Security Decision Support System T2 - 95th American Meteorological Society Annual Meeting AN - 1658700137; 6336782 JF - 95th American Meteorological Society Annual Meeting AU - McNally, Amy AU - Arsenault, K AU - Narapusetty, B AU - Peters-Lidard, C Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Security KW - Historical account KW - Artificial intelligence KW - Food KW - Decision support systems KW - Africa UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658700137?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Using+Historical+Ensembles+for+Context+in+an+African+Food+and+Water+Security+Decision+Support+System&rft.au=McNally%2C+Amy%3BArsenault%2C+K%3BNarapusetty%2C+B%3BPeters-Lidard%2C+C&rft.aulast=McNally&rft.aufirst=Amy&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Community Coordinated Modeling Center: Models & Applications Tailored for End User Needs T2 - 95th American Meteorological Society Annual Meeting AN - 1658700130; 6336579 JF - 95th American Meteorological Society Annual Meeting AU - Kuznetsova, M AU - Maddox, M AU - Zheng, Y AU - Pulkkinen, A AU - Wiegand, C AU - Boblitt, J AU - Chulaki, A AU - Macneice, P AU - Mays, M AU - Mullinix, R AU - Rastaetter, L AU - Shim, J AU - Taktakishvili, A Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Models UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658700130?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Community+Coordinated+Modeling+Center%3A+Models+%26amp%3B+Applications+Tailored+for+End+User+Needs&rft.au=Kuznetsova%2C+M%3BMaddox%2C+M%3BZheng%2C+Y%3BPulkkinen%2C+A%3BWiegand%2C+C%3BBoblitt%2C+J%3BChulaki%2C+A%3BMacneice%2C+P%3BMays%2C+M%3BMullinix%2C+R%3BRastaetter%2C+L%3BShim%2C+J%3BTaktakishvili%2C+A&rft.aulast=Kuznetsova&rft.aufirst=M&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - S'COOL ROVER: Citizen Science Cloud Observations Promoting Individual Learning and NASA CERES Science Objectives T2 - 95th American Meteorological Society Annual Meeting AN - 1658700108; 6336663 JF - 95th American Meteorological Society Annual Meeting AU - Crecelius, Sarah AU - Chambers, L AU - Rogerson, T Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Clouds KW - Learning KW - Observational learning UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658700108?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=S%27COOL+ROVER%3A+Citizen+Science+Cloud+Observations+Promoting+Individual+Learning+and+NASA+CERES+Science+Objectives&rft.au=Crecelius%2C+Sarah%3BChambers%2C+L%3BRogerson%2C+T&rft.aulast=Crecelius&rft.aufirst=Sarah&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Impact on Seasonal- and Sub-Seasonal-Scale Model Soil Moisture of Assimilating near-Surface Soil Moisture Observations with Different Bias Correction Approaches T2 - 95th American Meteorological Society Annual Meeting AN - 1658700065; 6336914 JF - 95th American Meteorological Society Annual Meeting AU - Draper, Clara AU - Reichle, R Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Soil moisture KW - Models UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658700065?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Impact+on+Seasonal-+and+Sub-Seasonal-Scale+Model+Soil+Moisture+of+Assimilating+near-Surface+Soil+Moisture+Observations+with+Different+Bias+Correction+Approaches&rft.au=Draper%2C+Clara%3BReichle%2C+R&rft.aulast=Draper&rft.aufirst=Clara&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Boundary Layer Regulation in the Southeast Atlantic Cloud Microphysics During the Biomass Burning Season as Seen by the A-Train Satellite Constellation T2 - 95th American Meteorological Society Annual Meeting AN - 1658700003; 6336458 JF - 95th American Meteorological Society Annual Meeting AU - Painemal, David AU - Kato, S AU - Minnis, P Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Clouds KW - Atlantic KW - Combustion products KW - Boundary layers KW - Remote sensing KW - Burning KW - Biomass KW - Satellites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658700003?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Boundary+Layer+Regulation+in+the+Southeast+Atlantic+Cloud+Microphysics+During+the+Biomass+Burning+Season+as+Seen+by+the+A-Train+Satellite+Constellation&rft.au=Painemal%2C+David%3BKato%2C+S%3BMinnis%2C+P&rft.aulast=Painemal&rft.aufirst=David&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - The SMAP Level 4 Surface and Root Zone Soil Moisture (L4_SM) Data Assimilation Product T2 - 95th American Meteorological Society Annual Meeting AN - 1658699984; 6336815 JF - 95th American Meteorological Society Annual Meeting AU - Reichle, Rolf AU - De Lannoy, G. AU - Crow, W AU - Kimball, J AU - Koster, R AU - Liu, Q Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Data collection KW - Data processing KW - Roots KW - Soil moisture UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658699984?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=The+SMAP+Level+4+Surface+and+Root+Zone+Soil+Moisture+%28L4_SM%29+Data+Assimilation+Product&rft.au=Reichle%2C+Rolf%3BDe+Lannoy%2C+G.%3BCrow%2C+W%3BKimball%2C+J%3BKoster%2C+R%3BLiu%2C+Q&rft.aulast=Reichle&rft.aufirst=Rolf&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Insight into the Physical and Dynamical Processes That Control Rapid Increases in Total Flash Rate T2 - 95th American Meteorological Society Annual Meeting AN - 1658699951; 6336628 JF - 95th American Meteorological Society Annual Meeting AU - Schultz, Christopher AU - Carey, L AU - Schultz, E AU - Blakeslee, R AU - Goodman, S Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Meteorology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658699951?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Insight+into+the+Physical+and+Dynamical+Processes+That+Control+Rapid+Increases+in+Total+Flash+Rate&rft.au=Schultz%2C+Christopher%3BCarey%2C+L%3BSchultz%2C+E%3BBlakeslee%2C+R%3BGoodman%2C+S&rft.aulast=Schultz&rft.aufirst=Christopher&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Overview of the Earth Observation Systems for Health and Air Quality T2 - 95th American Meteorological Society Annual Meeting AN - 1658699924; 6336687 JF - 95th American Meteorological Society Annual Meeting AU - Haynes, John AU - Estes, S Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Reviews KW - Air quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658699924?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Overview+of+the+Earth+Observation+Systems+for+Health+and+Air+Quality&rft.au=Haynes%2C+John%3BEstes%2C+S&rft.aulast=Haynes&rft.aufirst=John&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Assimilation of Satellite Carbon Dioxide Retrievals and Calibration of Their Error Statistics T2 - 95th American Meteorological Society Annual Meeting AN - 1658699914; 6336609 JF - 95th American Meteorological Society Annual Meeting AU - Weir, Brad AU - Pawson, S AU - Ott, L AU - Wargan, K AU - Nielsen, J AU - Todling, R AU - Machida, T AU - Sasakawa, M Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Statistics KW - Remote sensing KW - Carbon dioxide KW - Satellites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658699914?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Assimilation+of+Satellite+Carbon+Dioxide+Retrievals+and+Calibration+of+Their+Error+Statistics&rft.au=Weir%2C+Brad%3BPawson%2C+S%3BOtt%2C+L%3BWargan%2C+K%3BNielsen%2C+J%3BTodling%2C+R%3BMachida%2C+T%3BSasakawa%2C+M&rft.aulast=Weir&rft.aufirst=Brad&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Producing Long-Term Radiative Flux Data Sets From Satellite Analysis: Sample Results from the Next Version of the NASA/GEWEX Surface Radiation Budget Project T2 - 95th American Meteorological Society Annual Meeting AN - 1658699685; 6337981 JF - 95th American Meteorological Society Annual Meeting AU - Stackhouse Jr, Paul AU - Cox, S AU - Gupta, S AU - Mikovitz, J AU - Zhang, T Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Data processing KW - Radiation KW - Remote sensing KW - Budgets KW - Satellites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658699685?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Producing+Long-Term+Radiative+Flux+Data+Sets+From+Satellite+Analysis%3A+Sample+Results+from+the+Next+Version+of+the+NASA%2FGEWEX+Surface+Radiation+Budget+Project&rft.au=Stackhouse+Jr%2C+Paul%3BCox%2C+S%3BGupta%2C+S%3BMikovitz%2C+J%3BZhang%2C+T&rft.aulast=Stackhouse+Jr&rft.aufirst=Paul&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Diagnosing Aircraft Icing Potential from Satellite Cloud Retrievals T2 - 95th American Meteorological Society Annual Meeting AN - 1658699658; 6337947 JF - 95th American Meteorological Society Annual Meeting AU - Smith Jr, William AU - Minnis, P AU - Fleeger, C AU - Spangenberg, D Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Icing KW - Clouds KW - Aircraft KW - Remote sensing KW - Satellites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658699658?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Diagnosing+Aircraft+Icing+Potential+from+Satellite+Cloud+Retrievals&rft.au=Smith+Jr%2C+William%3BMinnis%2C+P%3BFleeger%2C+C%3BSpangenberg%2C+D&rft.aulast=Smith+Jr&rft.aufirst=William&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Extremely Low Passive Microwave Brightness Temperatures Due To Thunderstorms T2 - 95th American Meteorological Society Annual Meeting AN - 1658699653; 6337462 JF - 95th American Meteorological Society Annual Meeting AU - Cecil, Daniel Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Temperature effects KW - Weather KW - Microwave radiation KW - Brightness KW - Thunderstorms KW - Surface radiation temperature UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658699653?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Extremely+Low+Passive+Microwave+Brightness+Temperatures+Due+To+Thunderstorms&rft.au=Cecil%2C+Daniel&rft.aulast=Cecil&rft.aufirst=Daniel&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Dissemination of Earth Remote Sensing Data for use in the NOAA/NWS Damage Assessment Toolkit T2 - 95th American Meteorological Society Annual Meeting AN - 1658699636; 6336632 JF - 95th American Meteorological Society Annual Meeting AU - Molthan, Andrew AU - Burks, J AU - Camp, J AU - McGrath, K AU - Bell, J Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Data processing KW - Geosensing KW - Remote sensing UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658699636?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Dissemination+of+Earth+Remote+Sensing+Data+for+use+in+the+NOAA%2FNWS+Damage+Assessment+Toolkit&rft.au=Molthan%2C+Andrew%3BBurks%2C+J%3BCamp%2C+J%3BMcGrath%2C+K%3BBell%2C+J&rft.aulast=Molthan&rft.aufirst=Andrew&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - A 7-km Non-Hydrostatic Global Mesoscale Simulation for OSSEs with the Goddard Earth Observing System model (GEOS-5) T2 - 95th American Meteorological Society Annual Meeting AN - 1658699541; 6336638 JF - 95th American Meteorological Society Annual Meeting AU - Putman, William AU - Darmenov, A AU - Da Silva, A AU - Gelaro, R AU - Molod, A AU - Ott, L AU - Suarez, M Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Simulation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658699541?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=A+7-km+Non-Hydrostatic+Global+Mesoscale+Simulation+for+OSSEs+with+the+Goddard+Earth+Observing+System+model+%28GEOS-5%29&rft.au=Putman%2C+William%3BDarmenov%2C+A%3BDa+Silva%2C+A%3BGelaro%2C+R%3BMolod%2C+A%3BOtt%2C+L%3BSuarez%2C+M&rft.aulast=Putman&rft.aufirst=William&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - SMOS Soil Moisture Data Assimilation in the NASA Land Information System: Impact on LSM Initialization and NWP Forecasts T2 - 95th American Meteorological Society Annual Meeting AN - 1658699464; 6336816 JF - 95th American Meteorological Society Annual Meeting AU - Blankenship, Clay AU - Case, J AU - Zavodsky, B Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Data collection KW - Data processing KW - Soil moisture KW - Information systems UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658699464?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=SMOS+Soil+Moisture+Data+Assimilation+in+the+NASA+Land+Information+System%3A+Impact+on+LSM+Initialization+and+NWP+Forecasts&rft.au=Blankenship%2C+Clay%3BCase%2C+J%3BZavodsky%2C+B&rft.aulast=Blankenship&rft.aufirst=Clay&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - The Scientific Assessment of Ozone Depletion: 2014 T2 - 95th American Meteorological Society Annual Meeting AN - 1658699461; 6338026 JF - 95th American Meteorological Society Annual Meeting AU - Newman, Paul AU - Ajavon, A AU - Pyle, J AU - Ravishankara, A Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Ozone UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658699461?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=The+Scientific+Assessment+of+Ozone+Depletion%3A+2014&rft.au=Newman%2C+Paul%3BAjavon%2C+A%3BPyle%2C+J%3BRavishankara%2C+A&rft.aulast=Newman&rft.aufirst=Paul&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Improving the Utility of Seasonal Outlooks of Anomalous Precipitation for California T2 - 95th American Meteorological Society Annual Meeting AN - 1658699336; 6337598 JF - 95th American Meteorological Society Annual Meeting AU - Watkins, Lance AU - Davis, E AU - Nothdurft, A AU - Mendenhall, A Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Sulfur dioxide KW - Precipitation KW - USA, California KW - Seasonal variations UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658699336?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Improving+the+Utility+of+Seasonal+Outlooks+of+Anomalous+Precipitation+for+California&rft.au=Watkins%2C+Lance%3BDavis%2C+E%3BNothdurft%2C+A%3BMendenhall%2C+A&rft.aulast=Watkins&rft.aufirst=Lance&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Recent Drought in California--Anomaly or Regular Episode T2 - 95th American Meteorological Society Annual Meeting AN - 1658699322; 6337595 JF - 95th American Meteorological Society Annual Meeting AU - Savtchenko, Andrey AU - Huffman, G Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Droughts UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658699322?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Recent+Drought+in+California--Anomaly+or+Regular+Episode&rft.au=Savtchenko%2C+Andrey%3BHuffman%2C+G&rft.aulast=Savtchenko&rft.aufirst=Andrey&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Who leads when El Nino Dances with the Indian Monsoon? T2 - 95th American Meteorological Society Annual Meeting AN - 1658699314; 6337789 JF - 95th American Meteorological Society Annual Meeting AU - Narapusetty, Bala AU - Murtugudde, R AU - Kumar, A AU - Wang, H Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Monsoons UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658699314?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Who+leads+when+El+Nino+Dances+with+the+Indian+Monsoon%3F&rft.au=Narapusetty%2C+Bala%3BMurtugudde%2C+R%3BKumar%2C+A%3BWang%2C+H&rft.aulast=Narapusetty&rft.aufirst=Bala&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Sensitivity of Cirrus Properties to Ice Nuclei Abundance T2 - 95th American Meteorological Society Annual Meeting AN - 1658699281; 6337601 JF - 95th American Meteorological Society Annual Meeting AU - Jensen, Eric Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Sensitivity KW - Ice nuclei KW - Abundance UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658699281?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Sensitivity+of+Cirrus+Properties+to+Ice+Nuclei+Abundance&rft.au=Jensen%2C+Eric&rft.aulast=Jensen&rft.aufirst=Eric&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Extratropical Lower Stratospheric and Tropospheric Ozone in High Resolution Analyses by the GEOS-5 Ozone Assimilation System T2 - 95th American Meteorological Society Annual Meeting AN - 1658699255; 6338024 JF - 95th American Meteorological Society Annual Meeting AU - Olsen, Mark AU - Wargan, K AU - Pawson, S AU - Witte, J AU - Nielsen, J Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Troposphere KW - Stratosphere KW - Ozone UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658699255?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Extratropical+Lower+Stratospheric+and+Tropospheric+Ozone+in+High+Resolution+Analyses+by+the+GEOS-5+Ozone+Assimilation+System&rft.au=Olsen%2C+Mark%3BWargan%2C+K%3BPawson%2C+S%3BWitte%2C+J%3BNielsen%2C+J&rft.aulast=Olsen&rft.aufirst=Mark&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Atmospheric CO2 Column Measurements from Laser Absorption Spectrometry Lidar Systems T2 - 95th American Meteorological Society Annual Meeting AN - 1658699200; 6337701 JF - 95th American Meteorological Society Annual Meeting AU - Lin, Bing AU - Ismail, S AU - Harrison, F AU - Browell, E AU - Nehrir, A AU - Kooi, S AU - Dobler, J AU - Meadows, B AU - Obland, M Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Absorption spectroscopy KW - Lidar KW - Lasers KW - Carbon dioxide KW - Spectrometry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658699200?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Atmospheric+CO2+Column+Measurements+from+Laser+Absorption+Spectrometry+Lidar+Systems&rft.au=Lin%2C+Bing%3BIsmail%2C+S%3BHarrison%2C+F%3BBrowell%2C+E%3BNehrir%2C+A%3BKooi%2C+S%3BDobler%2C+J%3BMeadows%2C+B%3BObland%2C+M&rft.aulast=Lin&rft.aufirst=Bing&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Toward an Integrated Solution to Mitigate the Impact of Volcanic Ash to Aviation T2 - 95th American Meteorological Society Annual Meeting AN - 1658699053; 6336432 JF - 95th American Meteorological Society Annual Meeting AU - Murray, John AU - Fairlie, T AU - Vernier, J AU - Pavolonis, M AU - Seiglaff, J AU - Prata, F AU - Dezitter, F AU - Pieri, D AU - Lekki, J AU - Krotkov, N Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Volcanic ash UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658699053?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Toward+an+Integrated+Solution+to+Mitigate+the+Impact+of+Volcanic+Ash+to+Aviation&rft.au=Murray%2C+John%3BFairlie%2C+T%3BVernier%2C+J%3BPavolonis%2C+M%3BSeiglaff%2C+J%3BPrata%2C+F%3BDezitter%2C+F%3BPieri%2C+D%3BLekki%2C+J%3BKrotkov%2C+N&rft.aulast=Murray&rft.aufirst=John&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - The U.S. Interagency Volcanic Hazards Sciences and Services Coordination Group T2 - 95th American Meteorological Society Annual Meeting AN - 1658699046; 6336507 JF - 95th American Meteorological Society Annual Meeting AU - Murray, John AU - Miner, C AU - Tatusuko, R AU - Strahan, M AU - Mandeville, C AU - Guffanti, M AU - Holliday, C AU - Swanson, G AU - Kibler, J AU - Pavolonis, M AU - Stunder, B AU - Osiensky, J AU - Moore, D AU - Mastin, L AU - Murray, T AU - Schneider, D AU - Neal, C Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Hazards KW - Volcanoes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658699046?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=The+U.S.+Interagency+Volcanic+Hazards+Sciences+and+Services+Coordination+Group&rft.au=Murray%2C+John%3BMiner%2C+C%3BTatusuko%2C+R%3BStrahan%2C+M%3BMandeville%2C+C%3BGuffanti%2C+M%3BHolliday%2C+C%3BSwanson%2C+G%3BKibler%2C+J%3BPavolonis%2C+M%3BStunder%2C+B%3BOsiensky%2C+J%3BMoore%2C+D%3BMastin%2C+L%3BMurray%2C+T%3BSchneider%2C+D%3BNeal%2C+C&rft.aulast=Murray&rft.aufirst=John&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - The Tracking Meteogram, an AWIPS II Tool for Time-Series Analysis T2 - 95th American Meteorological Society Annual Meeting AN - 1658698953; 6338033 JF - 95th American Meteorological Society Annual Meeting AU - Burks, Jason AU - Sperow, K Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Time series analysis KW - Tracking UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658698953?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=The+Tracking+Meteogram%2C+an+AWIPS+II+Tool+for+Time-Series+Analysis&rft.au=Burks%2C+Jason%3BSperow%2C+K&rft.aulast=Burks&rft.aufirst=Jason&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - The Road to Redesigning the Goddard Library Space: The Goddard Information Collaboration Center (GIC**2) T2 - 95th American Meteorological Society Annual Meeting AN - 1658698942; 6337974 JF - 95th American Meteorological Society Annual Meeting AU - Major, Gene Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Meteorology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658698942?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=The+Road+to+Redesigning+the+Goddard+Library+Space%3A+The+Goddard+Information+Collaboration+Center+%28GIC**2%29&rft.au=Major%2C+Gene&rft.aulast=Major&rft.aufirst=Gene&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - An Update on the Global Drought Information System T2 - 95th American Meteorological Society Annual Meeting AN - 1658698925; 6337826 JF - 95th American Meteorological Society Annual Meeting AU - Schubert, Siegfried Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Droughts KW - Information systems UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658698925?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=An+Update+on+the+Global+Drought+Information+System&rft.au=Schubert%2C+Siegfried&rft.aulast=Schubert&rft.aufirst=Siegfried&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - The Potential Use of Land-Atmosphere Coupling Metrics as a Global Drought-Monitoring Tool T2 - 95th American Meteorological Society Annual Meeting AN - 1658698888; 6337825 JF - 95th American Meteorological Society Annual Meeting AU - Roundy, Joshua AU - Santanello Jr, J Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Meteorology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658698888?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=The+Potential+Use+of+Land-Atmosphere+Coupling+Metrics+as+a+Global+Drought-Monitoring+Tool&rft.au=Roundy%2C+Joshua%3BSantanello+Jr%2C+J&rft.aulast=Roundy&rft.aufirst=Joshua&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Near-Real Time Satellite-Retrieved Cloud and Surface Properties for Nowcasting and Assimilation T2 - 95th American Meteorological Society Annual Meeting AN - 1658698720; 6337855 JF - 95th American Meteorological Society Annual Meeting AU - Palikonda, Rabindra AU - Minnis, P AU - Hong, G AU - Trepte, Q AU - Spangenberg, D AU - Shan, B AU - Scarino, B AU - Sun-Mack, S AU - Chee, T AU - Chang, F AU - Ayers, J AU - Smith Jr, W AU - Bedka, K AU - Nguyen, L AU - Heck, P Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Clouds KW - Surface properties UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658698720?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Near-Real+Time+Satellite-Retrieved+Cloud+and+Surface+Properties+for+Nowcasting+and+Assimilation&rft.au=Palikonda%2C+Rabindra%3BMinnis%2C+P%3BHong%2C+G%3BTrepte%2C+Q%3BSpangenberg%2C+D%3BShan%2C+B%3BScarino%2C+B%3BSun-Mack%2C+S%3BChee%2C+T%3BChang%2C+F%3BAyers%2C+J%3BSmith+Jr%2C+W%3BBedka%2C+K%3BNguyen%2C+L%3BHeck%2C+P&rft.aulast=Palikonda&rft.aufirst=Rabindra&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Technology Advancement for Active Remote Sensing of Carbon Dioxide from Space Using the ASCENDS CarbonHawk Experiment Simulator: First Results T2 - 95th American Meteorological Society Annual Meeting AN - 1658698696; 6337700 JF - 95th American Meteorological Society Annual Meeting AU - Obland, Michael AU - Nehrir, A AU - Lin, B AU - Harrison, F AU - Kooi, S AU - Choi, Y AU - Plant, J AU - Yang, M AU - Antill, C AU - Campbell, J AU - Ismail, S AU - Meadows, B AU - Browell, E AU - Dobler, J AU - Zaccheo, T AU - Moore III, B AU - Crowell, S Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Simulators KW - Remote sensing KW - Carbon dioxide KW - Technology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658698696?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Technology+Advancement+for+Active+Remote+Sensing+of+Carbon+Dioxide+from+Space+Using+the+ASCENDS+CarbonHawk+Experiment+Simulator%3A+First+Results&rft.au=Obland%2C+Michael%3BNehrir%2C+A%3BLin%2C+B%3BHarrison%2C+F%3BKooi%2C+S%3BChoi%2C+Y%3BPlant%2C+J%3BYang%2C+M%3BAntill%2C+C%3BCampbell%2C+J%3BIsmail%2C+S%3BMeadows%2C+B%3BBrowell%2C+E%3BDobler%2C+J%3BZaccheo%2C+T%3BMoore+III%2C+B%3BCrowell%2C+S&rft.aulast=Obland&rft.aufirst=Michael&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Integrated metrics and benchmarking for the North American Land Data Assimilation System (NLDAS) T2 - 95th American Meteorological Society Annual Meeting AN - 1658698563; 6336384 JF - 95th American Meteorological Society Annual Meeting AU - Mocko, David AU - Peters-Lidard, C AU - Kumar, S AU - Wang, S AU - Arsenault, K AU - Nearing, G AU - Xia, Y AU - Ek, M. AU - Dong, J Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - North America KW - Data collection KW - Data processing UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658698563?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Integrated+metrics+and+benchmarking+for+the+North+American+Land+Data+Assimilation+System+%28NLDAS%29&rft.au=Mocko%2C+David%3BPeters-Lidard%2C+C%3BKumar%2C+S%3BWang%2C+S%3BArsenault%2C+K%3BNearing%2C+G%3BXia%2C+Y%3BEk%2C+M.%3BDong%2C+J&rft.aulast=Mocko&rft.aufirst=David&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Distributed Computation Resources for Earth System Grid Federation (ESGF) T2 - 95th American Meteorological Society Annual Meeting AN - 1658698494; 6337988 JF - 95th American Meteorological Society Annual Meeting AU - Duffy, Daniel AU - Doutriaux, C AU - Williams, D Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Meteorology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658698494?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Distributed+Computation+Resources+for+Earth+System+Grid+Federation+%28ESGF%29&rft.au=Duffy%2C+Daniel%3BDoutriaux%2C+C%3BWilliams%2C+D&rft.aulast=Duffy&rft.aufirst=Daniel&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - A New Water Vapor and Aerosol Profiling Lidar System for Measurements in the Lower Stratosphere and Troposphere T2 - 95th American Meteorological Society Annual Meeting AN - 1658698314; 6337795 JF - 95th American Meteorological Society Annual Meeting AU - Ismail, Syed AU - Nehrir, A AU - Notari, A AU - Hair, J AU - Ferrare, R AU - Kooi, S AU - Hostetler, C AU - Chuang, T AU - Refaat, T AU - Rosenlof, K AU - Jensen, E AU - Newman, P Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Aerosols KW - Water vapor KW - Profiling KW - Troposphere KW - Lidar KW - Stratosphere UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658698314?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=A+New+Water+Vapor+and+Aerosol+Profiling+Lidar+System+for+Measurements+in+the+Lower+Stratosphere+and+Troposphere&rft.au=Ismail%2C+Syed%3BNehrir%2C+A%3BNotari%2C+A%3BHair%2C+J%3BFerrare%2C+R%3BKooi%2C+S%3BHostetler%2C+C%3BChuang%2C+T%3BRefaat%2C+T%3BRosenlof%2C+K%3BJensen%2C+E%3BNewman%2C+P&rft.aulast=Ismail&rft.aufirst=Syed&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Analysis and Bias Correction of Land Surface Temperature in the Geos-5 Global Atmospheric Modeling and Assimilation System T2 - 95th American Meteorological Society Annual Meeting AN - 1658698276; 6338013 JF - 95th American Meteorological Society Annual Meeting AU - Draper, Clara AU - Reichle, R AU - Da Silva, A AU - Scarino, B Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Temperature effects UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658698276?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Analysis+and+Bias+Correction+of+Land+Surface+Temperature+in+the+Geos-5+Global+Atmospheric+Modeling+and+Assimilation+System&rft.au=Draper%2C+Clara%3BReichle%2C+R%3BDa+Silva%2C+A%3BScarino%2C+B&rft.aulast=Draper&rft.aufirst=Clara&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Observations and Modeling of Saharan Dust Interaction with a Tropical Cyclone T2 - 95th American Meteorological Society Annual Meeting AN - 1658698175; 6337098 JF - 95th American Meteorological Society Annual Meeting AU - Braun, Scott AU - Shi, J AU - Tao, W Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Cyclones KW - Hurricanes KW - Africa, Sahara Desert KW - Dust UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658698175?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Observations+and+Modeling+of+Saharan+Dust+Interaction+with+a+Tropical+Cyclone&rft.au=Braun%2C+Scott%3BShi%2C+J%3BTao%2C+W&rft.aulast=Braun&rft.aufirst=Scott&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Causes of the Extreme Dry Conditions over California During Recent Winters T2 - 95th American Meteorological Society Annual Meeting AN - 1658698168; 6337597 JF - 95th American Meteorological Society Annual Meeting AU - Wang, Hailan AU - Schubert, S Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - USA, California KW - Winter UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658698168?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Causes+of+the+Extreme+Dry+Conditions+over+California+During+Recent+Winters&rft.au=Wang%2C+Hailan%3BSchubert%2C+S&rft.aulast=Wang&rft.aufirst=Hailan&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - On-Shore and Off-Shore Storm Characteristic Results Over East Central Florida T2 - 95th American Meteorological Society Annual Meeting AN - 1658698140; 6337114 JF - 95th American Meteorological Society Annual Meeting AU - Wilson, Jennifer AU - Cummins, K AU - Simpson, A AU - Brown, R AU - Hinckley, A AU - Rison, W Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - USA, Florida KW - Storms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658698140?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=On-Shore+and+Off-Shore+Storm+Characteristic+Results+Over+East+Central+Florida&rft.au=Wilson%2C+Jennifer%3BCummins%2C+K%3BSimpson%2C+A%3BBrown%2C+R%3BHinckley%2C+A%3BRison%2C+W&rft.aulast=Wilson&rft.aufirst=Jennifer&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Mapping Dust Source Regions in North Africa using MISR Satellite-Derived Cloud Motion Vectors and Aerosol Products T2 - 95th American Meteorological Society Annual Meeting AN - 1658698112; 6337364 JF - 95th American Meteorological Society Annual Meeting AU - Garay, Michael Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Clouds KW - Atmospheric particulates KW - Aerosols KW - Africa KW - Mapping KW - Eolian dust KW - Dust UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658698112?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Mapping+Dust+Source+Regions+in+North+Africa+using+MISR+Satellite-Derived+Cloud+Motion+Vectors+and+Aerosol+Products&rft.au=Garay%2C+Michael&rft.aulast=Garay&rft.aufirst=Michael&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Assimilation of Wind Profiles from Multiple Doppler Radar Wind Profilers for Space Launch Vehicle Applications T2 - 95th American Meteorological Society Annual Meeting AN - 1658697886; 6337926 JF - 95th American Meteorological Society Annual Meeting AU - Decker, Ryan AU - Barbre Jr., R. AU - Leach, R AU - Walker, J AU - Brenton, J Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Wind profiles KW - Radar KW - Profilers UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658697886?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Assimilation+of+Wind+Profiles+from+Multiple+Doppler+Radar+Wind+Profilers+for+Space+Launch+Vehicle+Applications&rft.au=Decker%2C+Ryan%3BBarbre+Jr.%2C+R.%3BLeach%2C+R%3BWalker%2C+J%3BBrenton%2C+J&rft.aulast=Decker&rft.aufirst=Ryan&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Assessing the Use of Satellite Observations in the NASA Modern Era Reanalysis for Research and Applications, Version-2 (MERRA-2) T2 - 95th American Meteorological Society Annual Meeting AN - 1658697878; 6337279 JF - 95th American Meteorological Society Annual Meeting AU - McCarty, Will AU - Merkova, D AU - Gelaro, R AU - Huang, A Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Remote sensing KW - Satellites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658697878?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Assessing+the+Use+of+Satellite+Observations+in+the+NASA+Modern+Era+Reanalysis+for+Research+and+Applications%2C+Version-2+%28MERRA-2%29&rft.au=McCarty%2C+Will%3BMerkova%2C+D%3BGelaro%2C+R%3BHuang%2C+A&rft.aulast=McCarty&rft.aufirst=Will&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Global Lightning Climatology from TRMM LIS and OTD T2 - 95th American Meteorological Society Annual Meeting AN - 1658697742; 6337289 JF - 95th American Meteorological Society Annual Meeting AU - Cecil, Daniel AU - Buechler, D AU - Blakeslee, R Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Lightning KW - Climatology KW - Electricity UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658697742?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Global+Lightning+Climatology+from+TRMM+LIS+and+OTD&rft.au=Cecil%2C+Daniel%3BBuechler%2C+D%3BBlakeslee%2C+R&rft.aulast=Cecil&rft.aufirst=Daniel&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Using AIRS Data to Detect Temperature Inversions in Near-Real Time T2 - 95th American Meteorological Society Annual Meeting AN - 1658697658; 6337349 JF - 95th American Meteorological Society Annual Meeting AU - Barker, Mark AU - Sanchez, J Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Temperature effects KW - Data processing KW - Inversion KW - Temperature inversions UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658697658?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Using+AIRS+Data+to+Detect+Temperature+Inversions+in+Near-Real+Time&rft.au=Barker%2C+Mark%3BSanchez%2C+J&rft.aulast=Barker&rft.aufirst=Mark&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Solar Cycle 24 at Six Years: Over the Peaks and Through the Streams T2 - 95th American Meteorological Society Annual Meeting AN - 1658697614; 6337331 JF - 95th American Meteorological Society Annual Meeting AU - Pesnell, W Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - solar cycle KW - Streams UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658697614?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Solar+Cycle+24+at+Six+Years%3A+Over+the+Peaks+and+Through+the+Streams&rft.au=Pesnell%2C+W&rft.aulast=Pesnell&rft.aufirst=W&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - A New Look at the Stratospheric Sudden Warming of 1979 Using a Modern Data Assimilation System T2 - 95th American Meteorological Society Annual Meeting AN - 1658697599; 6337303 JF - 95th American Meteorological Society Annual Meeting AU - Pawson, Steven AU - Coy, L AU - Wargan, K AU - Remsberg, E Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Data collection KW - Data processing KW - Stratosphere UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658697599?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=A+New+Look+at+the+Stratospheric+Sudden+Warming+of+1979+Using+a+Modern+Data+Assimilation+System&rft.au=Pawson%2C+Steven%3BCoy%2C+L%3BWargan%2C+K%3BRemsberg%2C+E&rft.aulast=Pawson&rft.aufirst=Steven&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Evaluation of Climate Impacts from Different Models for Aviation-Induced Contrails for Trans-Atlantic Flights T2 - 95th American Meteorological Society Annual Meeting AN - 1658697536; 6337752 JF - 95th American Meteorological Society Annual Meeting AU - Kim, Jung-Hoon AU - Sridhar, B AU - Chan, W AU - Chen, N AU - Li, J. AU - Ng, H. AU - Schumann, U Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Flight KW - Climate KW - Environmental impact KW - Models UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658697536?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Evaluation+of+Climate+Impacts+from+Different+Models+for+Aviation-Induced+Contrails+for+Trans-Atlantic+Flights&rft.au=Kim%2C+Jung-Hoon%3BSridhar%2C+B%3BChan%2C+W%3BChen%2C+N%3BLi%2C+J.%3BNg%2C+H.%3BSchumann%2C+U&rft.aulast=Kim&rft.aufirst=Jung-Hoon&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Inter-comparison of S-NPP Cross Track Infrared Microwave Sounder Suite (CrIMSS) Water Vapor Retrievals with Radiosonde and Raman Lidar Water Vapor Measurements T2 - 95th American Meteorological Society Annual Meeting AN - 1658697519; 6337796 JF - 95th American Meteorological Society Annual Meeting AU - Walker, Monique AU - Demoz, B AU - Nalli, N AU - Reale, T AU - Venable, D AU - Whiteman, D Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Microwave radiation KW - Water vapor KW - Lidar KW - Radiosondes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658697519?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Inter-comparison+of+S-NPP+Cross+Track+Infrared+Microwave+Sounder+Suite+%28CrIMSS%29+Water+Vapor+Retrievals+with+Radiosonde+and+Raman+Lidar+Water+Vapor+Measurements&rft.au=Walker%2C+Monique%3BDemoz%2C+B%3BNalli%2C+N%3BReale%2C+T%3BVenable%2C+D%3BWhiteman%2C+D&rft.aulast=Walker&rft.aufirst=Monique&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Transport of Qbo-Induced Middle Stratospheric Variability to the Antarctic Lower Stratosphere on a One Year Time Scale T2 - 95th American Meteorological Society Annual Meeting AN - 1658697266; 6337140 JF - 95th American Meteorological Society Annual Meeting AU - Strahan, Susan AU - Oman, L AU - Coy, L AU - Douglass, A Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Stratosphere UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658697266?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Transport+of+Qbo-Induced+Middle+Stratospheric+Variability+to+the+Antarctic+Lower+Stratosphere+on+a+One+Year+Time+Scale&rft.au=Strahan%2C+Susan%3BOman%2C+L%3BCoy%2C+L%3BDouglass%2C+A&rft.aulast=Strahan&rft.aufirst=Susan&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Development and Application of Hyperspectral Infrared Ozone Retrieval Products for Operational Meteorology T2 - 95th American Meteorological Society Annual Meeting AN - 1658697259; 6337870 JF - 95th American Meteorological Society Annual Meeting AU - Berndt, Emily AU - Zavodsky, B AU - Jedlovec, G Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Meteorology KW - Ozone UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658697259?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Development+and+Application+of+Hyperspectral+Infrared+Ozone+Retrieval+Products+for+Operational+Meteorology&rft.au=Berndt%2C+Emily%3BZavodsky%2C+B%3BJedlovec%2C+G&rft.aulast=Berndt&rft.aufirst=Emily&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Recent Advances towards the Assimilation of Cloud-Affected Infrared Radiances in the GSI T2 - 95th American Meteorological Society Annual Meeting AN - 1658697024; 6337160 JF - 95th American Meteorological Society Annual Meeting AU - McCarty, Will Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Meteorology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658697024?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Recent+Advances+towards+the+Assimilation+of+Cloud-Affected+Infrared+Radiances+in+the+GSI&rft.au=McCarty%2C+Will&rft.aulast=McCarty&rft.aufirst=Will&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Summary of Micro-Pulse Lidar Data Obtained During NASA's DISCOVER-AQ Field Missions T2 - 95th American Meteorological Society Annual Meeting AN - 1658697011; 6337565 JF - 95th American Meteorological Society Annual Meeting AU - Berkoff, Timothy AU - Hoff, R AU - Delgado, R AU - Sawamura, P AU - Compton, J AU - Orozco, D AU - Sullivan, J AU - Pauly, R AU - Clark, R AU - Uribe, R AU - Vivola, J AU - Delong, C AU - Thomas, A AU - Lawrence, E AU - Jones, T AU - Decola, P AU - Mathur, S AU - Zheng, Y AU - Wyant, G AU - Blucher, R AU - Piatt, R AU - Abderrahman, M AU - Martins, D AU - Halliday, H AU - Auvil, R AU - Woodman, M AU - Connell, R AU - Hicks, M AU - Demoz, B AU - Tzortziou, M AU - De Rosa, P AU - Ferrare, R AU - Hostetler, C AU - Lawrence, W Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Data processing KW - Lidar UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658697011?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Summary+of+Micro-Pulse+Lidar+Data+Obtained+During+NASA%27s+DISCOVER-AQ+Field+Missions&rft.au=Berkoff%2C+Timothy%3BHoff%2C+R%3BDelgado%2C+R%3BSawamura%2C+P%3BCompton%2C+J%3BOrozco%2C+D%3BSullivan%2C+J%3BPauly%2C+R%3BClark%2C+R%3BUribe%2C+R%3BVivola%2C+J%3BDelong%2C+C%3BThomas%2C+A%3BLawrence%2C+E%3BJones%2C+T%3BDecola%2C+P%3BMathur%2C+S%3BZheng%2C+Y%3BWyant%2C+G%3BBlucher%2C+R%3BPiatt%2C+R%3BAbderrahman%2C+M%3BMartins%2C+D%3BHalliday%2C+H%3BAuvil%2C+R%3BWoodman%2C+M%3BConnell%2C+R%3BHicks%2C+M%3BDemoz%2C+B%3BTzortziou%2C+M%3BDe+Rosa%2C+P%3BFerrare%2C+R%3BHostetler%2C+C%3BLawrence%2C+W&rft.aulast=Berkoff&rft.aufirst=Timothy&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - NASA Earth Science Data Products for Farmer Management and Agro-Input Cell Phone Systems T2 - 95th American Meteorological Society Annual Meeting AN - 1658696999; 6337411 JF - 95th American Meteorological Society Annual Meeting AU - Brown, Molly AU - Hosler, J AU - Konlambigue, M AU - Bentil, K AU - Escobar, V Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Data processing KW - Cellular telephones KW - Earth sciences UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658696999?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=NASA+Earth+Science+Data+Products+for+Farmer+Management+and+Agro-Input+Cell+Phone+Systems&rft.au=Brown%2C+Molly%3BHosler%2C+J%3BKonlambigue%2C+M%3BBentil%2C+K%3BEscobar%2C+V&rft.aulast=Brown&rft.aufirst=Molly&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Land Long Term Climate Data Records from AVHRR, MODIS and VIIRS T2 - 95th American Meteorological Society Annual Meeting AN - 1658696886; 6337980 JF - 95th American Meteorological Society Annual Meeting AU - Vermote, Eric AU - Justice, C AU - Claverie, M AU - Csiszar, I AU - Meyer, D AU - Myneni, R AU - Devadiga, S AU - Masuoka, E AU - Wolfe, R Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Data processing KW - Climate UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658696886?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Land+Long+Term+Climate+Data+Records+from+AVHRR%2C+MODIS+and+VIIRS&rft.au=Vermote%2C+Eric%3BJustice%2C+C%3BClaverie%2C+M%3BCsiszar%2C+I%3BMeyer%2C+D%3BMyneni%2C+R%3BDevadiga%2C+S%3BMasuoka%2C+E%3BWolfe%2C+R&rft.aulast=Vermote&rft.aufirst=Eric&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Extending space-based global lidar measurements: The Cloud-Aerosol Transport System (CATS) T2 - 95th American Meteorological Society Annual Meeting AN - 1658696882; 6337702 JF - 95th American Meteorological Society Annual Meeting AU - Yorks, John AU - McGill, M AU - Palm, S AU - Hlavka, D AU - Selmer, P AU - Nowottnick, E AU - Vaughan, M AU - Rodier, S Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Lidar UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658696882?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Extending+space-based+global+lidar+measurements%3A+The+Cloud-Aerosol+Transport+System+%28CATS%29&rft.au=Yorks%2C+John%3BMcGill%2C+M%3BPalm%2C+S%3BHlavka%2C+D%3BSelmer%2C+P%3BNowottnick%2C+E%3BVaughan%2C+M%3BRodier%2C+S&rft.aulast=Yorks&rft.aufirst=John&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Asian Tropopause Aerosol Layer (ATAL): Composition, Origin, and Radiative Forcing Estimates T2 - 95th American Meteorological Society Annual Meeting AN - 1658696822; 6337897 JF - 95th American Meteorological Society Annual Meeting AU - Fairlie, T AU - Vernier, J AU - Natarajan, M AU - Bedka, K AU - Thomason, L AU - Wienhold, F AU - Bian, J AU - Martinsson, B Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Aerosols KW - Tropopause UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658696822?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Asian+Tropopause+Aerosol+Layer+%28ATAL%29%3A+Composition%2C+Origin%2C+and+Radiative+Forcing+Estimates&rft.au=Fairlie%2C+T%3BVernier%2C+J%3BNatarajan%2C+M%3BBedka%2C+K%3BThomason%2C+L%3BWienhold%2C+F%3BBian%2C+J%3BMartinsson%2C+B&rft.aulast=Fairlie&rft.aufirst=T&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Challenges in Assessing Aerosol-Warm Cloud Radiative Interactions with Satellite Observations and Future Directions (Invited Presentation) T2 - 95th American Meteorological Society Annual Meeting AN - 1658696806; 6337720 JF - 95th American Meteorological Society Annual Meeting AU - Platnick, Steven AU - Oreopoulos, L AU - Meyer, K AU - Lee, D AU - Del Genio, A Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Clouds KW - Remote sensing KW - Satellites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658696806?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Challenges+in+Assessing+Aerosol-Warm+Cloud+Radiative+Interactions+with+Satellite+Observations+and+Future+Directions+%28Invited+Presentation%29&rft.au=Platnick%2C+Steven%3BOreopoulos%2C+L%3BMeyer%2C+K%3BLee%2C+D%3BDel+Genio%2C+A&rft.aulast=Platnick&rft.aufirst=Steven&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Air Mass Origin in the Upper Troposphere/Lower Stratosphere: Signatures of Asian Boundary Layer Air T2 - 95th American Meteorological Society Annual Meeting AN - 1658696777; 6337134 JF - 95th American Meteorological Society Annual Meeting AU - Orbe, Clara AU - Newman, P AU - Waugh, D Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Air masses KW - Boundary layers KW - Troposphere KW - Stratosphere UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658696777?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Air+Mass+Origin+in+the+Upper+Troposphere%2FLower+Stratosphere%3A+Signatures+of+Asian+Boundary+Layer+Air&rft.au=Orbe%2C+Clara%3BNewman%2C+P%3BWaugh%2C+D&rft.aulast=Orbe&rft.aufirst=Clara&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - A Journey on the Stratospheric Highway: From Tropical Wind to Polar Spring T2 - 95th American Meteorological Society Annual Meeting AN - 1658696768; 6337141 JF - 95th American Meteorological Society Annual Meeting AU - Oman, Luke AU - Strahan, S AU - Douglass, A AU - Coy, L Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Highways KW - Stratosphere KW - Wind UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658696768?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=A+Journey+on+the+Stratospheric+Highway%3A+From+Tropical+Wind+to+Polar+Spring&rft.au=Oman%2C+Luke%3BStrahan%2C+S%3BDouglass%2C+A%3BCoy%2C+L&rft.aulast=Oman&rft.aufirst=Luke&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Recent Developments and Future Challenges in Cumulus Parameterization T2 - 95th American Meteorological Society Annual Meeting AN - 1658696668; 6337250 JF - 95th American Meteorological Society Annual Meeting AU - Del Genio, Anthony Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Clouds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658696668?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Recent+Developments+and+Future+Challenges+in+Cumulus+Parameterization&rft.au=Del+Genio%2C+Anthony&rft.aulast=Del+Genio&rft.aufirst=Anthony&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Correction of Excessive Precipitation over Steep and High Mountains in a GCM: A Simple Method of Parameterizing the Thermal Effects of Subgrid Topographic Variation T2 - 95th American Meteorological Society Annual Meeting AN - 1658696542; 6337827 JF - 95th American Meteorological Society Annual Meeting AU - Chao, Winston Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Temperature effects KW - Mountains KW - Precipitation KW - Topographic effects UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658696542?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Correction+of+Excessive+Precipitation+over+Steep+and+High+Mountains+in+a+GCM%3A+A+Simple+Method+of+Parameterizing+the+Thermal+Effects+of+Subgrid+Topographic+Variation&rft.au=Chao%2C+Winston&rft.aulast=Chao&rft.aufirst=Winston&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Convective Influence and Transport Pathways Controlling the Tropical Tropopause Distribution of Carbon Monoxide and Ozone T2 - 95th American Meteorological Society Annual Meeting AN - 1658696412; 6337402 JF - 95th American Meteorological Society Annual Meeting AU - Jensen, Eric AU - Bergman, J AU - Pfister, L AU - Ueyama, R AU - Kinnison, D Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Carbon monoxide KW - Tropopause KW - Ozone UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658696412?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Convective+Influence+and+Transport+Pathways+Controlling+the+Tropical+Tropopause+Distribution+of+Carbon+Monoxide+and+Ozone&rft.au=Jensen%2C+Eric%3BBergman%2C+J%3BPfister%2C+L%3BUeyama%2C+R%3BKinnison%2C+D&rft.aulast=Jensen&rft.aufirst=Eric&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Day 1 for the Integrated Multi-satellitE Retrievals for GPM (IMERG) Data Sets T2 - 95th American Meteorological Society Annual Meeting AN - 1658696403; 6337324 JF - 95th American Meteorological Society Annual Meeting AU - Huffman, George AU - Bolvin, D AU - Braithwaite, D AU - Hsu, K AU - Joyce, R AU - Kidd, C AU - Sorooshian, S AU - Xie, P Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Data processing UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658696403?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Day+1+for+the+Integrated+Multi-satellitE+Retrievals+for+GPM+%28IMERG%29+Data+Sets&rft.au=Huffman%2C+George%3BBolvin%2C+D%3BBraithwaite%2C+D%3BHsu%2C+K%3BJoyce%2C+R%3BKidd%2C+C%3BSorooshian%2C+S%3BXie%2C+P&rft.aulast=Huffman&rft.aufirst=George&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Real-Time Forecasting of Precipitation and Hydrology for GPM Field Campaigns T2 - 95th American Meteorological Society Annual Meeting AN - 1658696250; 6337326 JF - 95th American Meteorological Society Annual Meeting AU - Peters-Lidard, Christa AU - Wu, D. AU - Liu, Y AU - Kemp, E AU - Tao, W Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Prediction KW - Hydrology KW - Precipitation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658696250?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Real-Time+Forecasting+of+Precipitation+and+Hydrology+for+GPM+Field+Campaigns&rft.au=Peters-Lidard%2C+Christa%3BWu%2C+D.%3BLiu%2C+Y%3BKemp%2C+E%3BTao%2C+W&rft.aulast=Peters-Lidard&rft.aufirst=Christa&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Convective Transport of Trace Gases and Lightning NOx Production in DC3 Storms Simulated with Cloud-Resolving, Regional, and Global Models T2 - 95th American Meteorological Society Annual Meeting AN - 1658696149; 6337252 JF - 95th American Meteorological Society Annual Meeting AU - Pickering, K AU - Barth, M AU - Allen, D AU - Bela, M AU - Cummings, K AU - Li, Y. Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Gases KW - Lightning KW - Electricity KW - Nitrogen compounds KW - Storms KW - Oxides KW - Models UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658696149?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Convective+Transport+of+Trace+Gases+and+Lightning+NOx+Production+in+DC3+Storms+Simulated+with+Cloud-Resolving%2C+Regional%2C+and+Global+Models&rft.au=Pickering%2C+K%3BBarth%2C+M%3BAllen%2C+D%3BBela%2C+M%3BCummings%2C+K%3BLi%2C+Y.&rft.aulast=Pickering&rft.aufirst=K&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Trajectory and Microphysical Modeling of TTL Water T2 - 95th American Meteorological Society Annual Meeting AN - 1658695930; 6337135 JF - 95th American Meteorological Society Annual Meeting AU - Ueyama, Rei AU - Jensen, E AU - Pfister, L Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Meteorology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658695930?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Trajectory+and+Microphysical+Modeling+of+TTL+Water&rft.au=Ueyama%2C+Rei%3BJensen%2C+E%3BPfister%2C+L&rft.aulast=Ueyama&rft.aufirst=Rei&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - CPAPER T1 - Impact of Aerosols on Convective Clouds and Precipitation T2 - 95th American Meteorological Society Annual Meeting AN - 1658695813; 6337102 JF - 95th American Meteorological Society Annual Meeting AU - Tao, Wei-Kuo AU - Li, X. Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Clouds KW - Aerosols KW - Precipitation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658695813?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=Impact+of+Aerosols+on+Convective+Clouds+and+Precipitation&rft.au=Tao%2C+Wei-Kuo%3BLi%2C+X.&rft.aulast=Tao&rft.aufirst=Wei-Kuo&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - NEWS T1 - NASA Finds Good News on Forests and Carbon Dioxide AN - 1641701148 JF - UPI Space Daily AU - Carol Rasmussen for NASA Earth Science News Y1 - 2015/01/03/ PY - 2015 DA - 2015 Jan 03 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641701148?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=NASA+Finds+Good+News+on+Forests+and+Carbon+Dioxide&rft.au=Carol+Rasmussen+for+NASA+Earth+Science+News&rft.aulast=Carol+Rasmussen+for+NASA+Earth+Science+News&rft.aufirst=&rft.date=2015-01-03&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-01-03 ER - TY - JOUR T1 - Search for sugars and related compounds in residues produced from the UV irradiation of astrophysical ice analogs AN - 1859791379; 2017-003907 JF - Annual Meeting of the Meteoritical Society AU - Sandford, S A AU - Nuevo, M AU - Materese, C K AU - Cooper, G W AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5142 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - water KW - experimental studies KW - irradiation KW - photochemistry KW - gas chromatograms KW - mass spectra KW - ultraviolet radiation KW - sugars KW - methanol KW - meteorites KW - organic compounds KW - electromagnetic radiation KW - ice KW - chromatograms KW - alcohols KW - carbohydrates KW - spectra KW - 05B:Petrology of meteorites and tektites KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859791379?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Search+for+sugars+and+related+compounds+in+residues+produced+from+the+UV+irradiation+of+astrophysical+ice+analogs&rft.au=Sandford%2C+S+A%3BNuevo%2C+M%3BMaterese%2C+C+K%3BCooper%2C+G+W%3BAnonymous&rft.aulast=Sandford&rft.aufirst=S&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5142.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 10 N1 - Last updated - 2017-01-19 N1 - SubjectsTermNotLitGenreText - alcohols; carbohydrates; chromatograms; electromagnetic radiation; experimental studies; gas chromatograms; ice; irradiation; mass spectra; meteorites; methanol; organic compounds; photochemistry; spectra; sugars; ultraviolet radiation; water ER - TY - JOUR T1 - A refractory inclusion in unequilibrated ordinary chondrite (LL3.3) Allan Hills A81251 AN - 1859791300; 2017-003846 JF - Annual Meeting of the Meteoritical Society AU - Mishra, R K AU - Simon, J I AU - Ross, D K AU - Keller, L P AU - Marhas, K K AU - Needham, A W AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5139 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - sorosilicates KW - silicates KW - ilmenite KW - alteration KW - ordinary chondrites KW - stony meteorites KW - unequilibrated ordinary chondrites KW - refractory materials KW - calcium-aluminum inclusions KW - spinel KW - LL chondrites KW - electron probe data KW - meteorites KW - melilite group KW - Allan Hills Meteorites KW - melilite KW - fine-grained materials KW - inclusions KW - orthosilicates KW - ALHA 81251 KW - oxides KW - chondrites KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859791300?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=A+refractory+inclusion+in+unequilibrated+ordinary+chondrite+%28LL3.3%29+Allan+Hills+A81251&rft.au=Mishra%2C+R+K%3BSimon%2C+J+I%3BRoss%2C+D+K%3BKeller%2C+L+P%3BMarhas%2C+K+K%3BNeedham%2C+A+W%3BAnonymous&rft.aulast=Mishra&rft.aufirst=R&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5139.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 3 N1 - Last updated - 2017-01-19 N1 - SubjectsTermNotLitGenreText - ALHA 81251; Allan Hills Meteorites; alteration; calcium-aluminum inclusions; chondrites; electron probe data; fine-grained materials; ilmenite; inclusions; LL chondrites; melilite; melilite group; meteorites; ordinary chondrites; orthosilicates; oxides; refractory materials; silicates; sorosilicates; spinel; stony meteorites; unequilibrated ordinary chondrites ER - TY - JOUR T1 - Physical properties of meteorite falls in relation to planetary defense AN - 1859791168; 2017-003875 JF - Annual Meeting of the Meteoritical Society AU - Ostrowski, D AU - Sears, D W G AU - Bryson, K AU - Agrawal, P AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5363 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - meteorites KW - laboratory studies KW - physical properties KW - density KW - asteroids KW - parent bodies KW - thermal properties KW - natural hazards KW - mechanical properties KW - porosity KW - meteorite falls KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859791168?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Physical+properties+of+meteorite+falls+in+relation+to+planetary+defense&rft.au=Ostrowski%2C+D%3BSears%2C+D+W+G%3BBryson%2C+K%3BAgrawal%2C+P%3BAnonymous&rft.aulast=Ostrowski&rft.aufirst=D&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5363.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 8 N1 - Last updated - 2017-01-19 N1 - SubjectsTermNotLitGenreText - asteroids; density; laboratory studies; mechanical properties; meteorite falls; meteorites; natural hazards; parent bodies; physical properties; porosity; thermal properties ER - TY - JOUR T1 - Updates on pairing issues with the US Antarctic meteorite collection AN - 1859791125; 2017-003894 JF - Annual Meeting of the Meteoritical Society AU - Righter, K AU - Satterwhite, C AU - Schutt, J AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5266 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - lunar meteorites KW - ordinary chondrites KW - nakhlite KW - stony meteorites KW - Martian meteorites KW - Lewis Cliff Meteorites KW - LaPaz Icefield Meteorites KW - Elephant Moraine Meteorites KW - L chondrites KW - SNC Meteorites KW - meteorites KW - Dominion Range Meteorites KW - howardite KW - Meteorite Hills Meteorites KW - chondrites KW - chromium KW - Miller Range Meteorites KW - strewn fields KW - LL chondrites KW - carbonaceous chondrites KW - achondrites KW - Antarctica KW - paired meteorites KW - metals KW - Queen Alexandra Range Meteorites KW - magnetic susceptibility KW - Grosvenor Range Meteorites KW - eucrite KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859791125?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Updates+on+pairing+issues+with+the+US+Antarctic+meteorite+collection&rft.au=Righter%2C+K%3BSatterwhite%2C+C%3BSchutt%2C+J%3BAnonymous&rft.aulast=Righter&rft.aufirst=K&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5266.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 5 N1 - Last updated - 2017-01-19 N1 - SubjectsTermNotLitGenreText - achondrites; Antarctica; carbonaceous chondrites; chondrites; chromium; Dominion Range Meteorites; Elephant Moraine Meteorites; eucrite; Grosvenor Range Meteorites; howardite; L chondrites; LaPaz Icefield Meteorites; Lewis Cliff Meteorites; LL chondrites; lunar meteorites; magnetic susceptibility; Martian meteorites; metals; Meteorite Hills Meteorites; meteorites; Miller Range Meteorites; nakhlite; ordinary chondrites; paired meteorites; Queen Alexandra Range Meteorites; SNC Meteorites; stony meteorites; strewn fields ER - TY - JOUR T1 - Aluminum-magnesium isotope systematics in Wark-Lovering rims AN - 1859790966; 2017-003865 JF - Annual Meeting of the Meteoritical Society AU - Needham, A W AU - Messenger, S AU - Keller, L P AU - Simon, J I AU - Han, J AU - Mishra, R K AU - Marhas, K K AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5014 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - sorosilicates KW - silicates KW - isotope fractionation KW - magnesium KW - stony meteorites KW - ion probe data KW - isotopes KW - calcium-aluminum inclusions KW - Mg-26 KW - mass spectra KW - CV chondrites KW - thermal history KW - stable isotopes KW - meteorites KW - melilite group KW - radioactive isotopes KW - melilite KW - aluminum KW - Wark-Lovering rims KW - inclusions KW - orthosilicates KW - oxides KW - Al-27/Al-26 KW - spectra KW - heterogeneity KW - chondrites KW - alkaline earth metals KW - isotope ratios KW - Vigarano Meteorite KW - hibonite KW - carbonaceous chondrites KW - metals KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859790966?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Aluminum-magnesium+isotope+systematics+in+Wark-Lovering+rims&rft.au=Needham%2C+A+W%3BMessenger%2C+S%3BKeller%2C+L+P%3BSimon%2C+J+I%3BHan%2C+J%3BMishra%2C+R+K%3BMarhas%2C+K+K%3BAnonymous&rft.aulast=Needham&rft.aufirst=A&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5014.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 5 N1 - Last updated - 2017-01-19 N1 - SubjectsTermNotLitGenreText - Al-27/Al-26; alkaline earth metals; aluminum; calcium-aluminum inclusions; carbonaceous chondrites; chondrites; CV chondrites; heterogeneity; hibonite; inclusions; ion probe data; isotope fractionation; isotope ratios; isotopes; magnesium; mass spectra; melilite; melilite group; metals; meteorites; Mg-26; orthosilicates; oxides; radioactive isotopes; silicates; sorosilicates; spectra; stable isotopes; stony meteorites; thermal history; Vigarano Meteorite; Wark-Lovering rims ER - TY - JOUR T1 - Oxygen isotopes in perovskites and associated mineral assemblages in a hibonite-bearing Allende CAI AN - 1859790902; 2017-003845 JF - Annual Meeting of the Meteoritical Society AU - Mishra, R K AU - Simon, J I AU - Messenger, S AU - Marhas, K K AU - Ross, D K AU - Needham, A W AU - Han, J AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5133 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - stony meteorites KW - oxygen KW - isotopes KW - isotope ratios KW - calcium-aluminum inclusions KW - perovskite KW - hibonite KW - carbonaceous chondrites KW - CV chondrites KW - Wark-Lovering rim KW - stable isotopes KW - early solar system KW - Allende Meteorite KW - solar nebula KW - meteorites KW - inclusions KW - relict materials KW - oxides KW - chondrites KW - O-17/O-16 KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859790902?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Oxygen+isotopes+in+perovskites+and+associated+mineral+assemblages+in+a+hibonite-bearing+Allende+CAI&rft.au=Mishra%2C+R+K%3BSimon%2C+J+I%3BMessenger%2C+S%3BMarhas%2C+K+K%3BRoss%2C+D+K%3BNeedham%2C+A+W%3BHan%2C+J%3BAnonymous&rft.aulast=Mishra&rft.aufirst=R&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5133.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 3 N1 - Last updated - 2017-01-19 N1 - SubjectsTermNotLitGenreText - Allende Meteorite; calcium-aluminum inclusions; carbonaceous chondrites; chondrites; CV chondrites; early solar system; hibonite; inclusions; isotope ratios; isotopes; meteorites; O-17/O-16; oxides; oxygen; perovskite; relict materials; solar nebula; stable isotopes; stony meteorites; Wark-Lovering rim ER - TY - JOUR T1 - Sulfur and oxygen isotopic analysis of a cosmic symplectite from a Comet Wild 2 Stardust terminal particle AN - 1859790826; 2017-003866 JF - Annual Meeting of the Meteoritical Society AU - Nguyen, A N AU - Berger, E L AU - Nakamura-Messenger, K AU - Messenger, S AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5375 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - stony meteorites KW - oxygen KW - ion probe data KW - Stardust Mission KW - isotopes KW - isotope ratios KW - mass spectra KW - carbonaceous chondrites KW - stable isotopes KW - solar nebula KW - meteorites KW - comets KW - S-34/S-32 KW - Wild 2 Comet KW - sulfur KW - NanoSIMS KW - spectra KW - S-33/S-32 KW - symplectite KW - chondrites KW - sulfides KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859790826?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Sulfur+and+oxygen+isotopic+analysis+of+a+cosmic+symplectite+from+a+Comet+Wild+2+Stardust+terminal+particle&rft.au=Nguyen%2C+A+N%3BBerger%2C+E+L%3BNakamura-Messenger%2C+K%3BMessenger%2C+S%3BAnonymous&rft.aulast=Nguyen&rft.aufirst=A&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5375.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 16 N1 - Last updated - 2017-01-19 N1 - SubjectsTermNotLitGenreText - carbonaceous chondrites; chondrites; comets; ion probe data; isotope ratios; isotopes; mass spectra; meteorites; NanoSIMS; oxygen; S-33/S-32; S-34/S-32; solar nebula; spectra; stable isotopes; Stardust Mission; stony meteorites; sulfides; sulfur; symplectite; Wild 2 Comet ER - TY - JOUR T1 - Petrology of anomalous eucrite QUE 94484 AN - 1859790674; 2017-003847 JF - Annual Meeting of the Meteoritical Society AU - Mittlefehldt, D W AU - Peng, Z X AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5342 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - silicates KW - magnesium KW - stony meteorites KW - oxygen KW - manganese KW - iron KW - fugacity KW - meteorites KW - pyroxene group KW - reduction KW - zoning KW - troilite KW - chain silicates KW - alkaline earth metals KW - textures KW - anomalies KW - achondrites KW - metals KW - Queen Alexandra Range Meteorites KW - sulfur KW - petrography KW - eucrite KW - crystallization KW - QUE 94484 KW - sulfides KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859790674?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Petrology+of+anomalous+eucrite+QUE+94484&rft.au=Mittlefehldt%2C+D+W%3BPeng%2C+Z+X%3BAnonymous&rft.aulast=Mittlefehldt&rft.aufirst=D&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5342.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 9 N1 - Last updated - 2017-01-19 N1 - SubjectsTermNotLitGenreText - achondrites; alkaline earth metals; anomalies; chain silicates; crystallization; eucrite; fugacity; iron; magnesium; manganese; metals; meteorites; oxygen; petrography; pyroxene group; QUE 94484; Queen Alexandra Range Meteorites; reduction; silicates; stony meteorites; sulfides; sulfur; textures; troilite; zoning ER - TY - JOUR T1 - Petrology and in situ trace element chemistry of a suite of R chondrites AN - 1859790671; 2017-003848 JF - Annual Meeting of the Meteoritical Society AU - Mittlefehldt, D W AU - Peng, Z X AU - Torrano, Z A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5338 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - silicates KW - stony meteorites KW - LAP 03639 KW - cobalt KW - LaPaz Icefield Meteorites KW - olivine group KW - LAP 04840 KW - meteorites KW - pyroxene group KW - olivine KW - orthosilicates KW - trace elements KW - chondrites KW - chromium KW - chain silicates KW - Miller Range Meteorites KW - MIL 11207 KW - metamorphism KW - nesosilicates KW - metals KW - chondrules KW - classification KW - rumurutiites KW - nickel KW - petrography KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859790671?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Petrology+and+in+situ+trace+element+chemistry+of+a+suite+of+R+chondrites&rft.au=Mittlefehldt%2C+D+W%3BPeng%2C+Z+X%3BTorrano%2C+Z+A%3BAnonymous&rft.aulast=Mittlefehldt&rft.aufirst=D&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5338.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 9 N1 - Last updated - 2017-01-19 N1 - SubjectsTermNotLitGenreText - chain silicates; chondrites; chondrules; chromium; classification; cobalt; LAP 03639; LAP 04840; LaPaz Icefield Meteorites; metals; metamorphism; meteorites; MIL 11207; Miller Range Meteorites; nesosilicates; nickel; olivine; olivine group; orthosilicates; petrography; pyroxene group; rumurutiites; silicates; stony meteorites; trace elements ER - TY - JOUR T1 - Identification of highly fractionated (super 18) O-rich silicate grains in the Queen Alexandra Range 99177 CR3 chondrite AN - 1859790605; 2017-003867 JF - Annual Meeting of the Meteoritical Society AU - Nguyen, A N AU - Keller, L P AU - Messenger, S AU - Rahman, Z AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5286 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - silicates KW - stony meteorites KW - oxygen KW - ion probe data KW - isotopes KW - mass spectra KW - olivine group KW - stable isotopes KW - temperature KW - meteorites KW - pyroxene group KW - CR chondrites KW - olivine KW - orthosilicates KW - spectra KW - heterogeneity KW - chondrites KW - enstatite KW - chain silicates KW - QUE 99177 KW - isotope ratios KW - electron microscopy data KW - O-18/O-16 KW - carbonaceous chondrites KW - TEM data KW - nesosilicates KW - Queen Alexandra Range Meteorites KW - NanoSIMS KW - orthopyroxene KW - exsolution KW - high temperature KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859790605?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Identification+of+highly+fractionated+%28super+18%29+O-rich+silicate+grains+in+the+Queen+Alexandra+Range+99177+CR3+chondrite&rft.au=Nguyen%2C+A+N%3BKeller%2C+L+P%3BMessenger%2C+S%3BRahman%2C+Z%3BAnonymous&rft.aulast=Nguyen&rft.aufirst=A&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5386.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 7 N1 - Last updated - 2017-01-19 N1 - SubjectsTermNotLitGenreText - carbonaceous chondrites; chain silicates; chondrites; CR chondrites; electron microscopy data; enstatite; exsolution; heterogeneity; high temperature; ion probe data; isotope ratios; isotopes; mass spectra; meteorites; NanoSIMS; nesosilicates; O-18/O-16; olivine; olivine group; orthopyroxene; orthosilicates; oxygen; pyroxene group; QUE 99177; Queen Alexandra Range Meteorites; silicates; spectra; stable isotopes; stony meteorites; TEM data; temperature ER - TY - JOUR T1 - Fischer-Tropsch reactions; not the simple chemistry we were always led to believe AN - 1859790470; 2017-003871 JF - Annual Meeting of the Meteoritical Society AU - Nuth, J A AU - Johnson, N M AU - Ferguson, F T AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5038 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - silicates KW - iron silicates KW - diffusion KW - gaseous phase KW - amorphous materials KW - rates KW - cosmochemistry KW - iron KW - temperature KW - solid phase KW - solar nebula KW - carbon monoxide KW - organic compounds KW - catalysis KW - chemical reactions KW - metals KW - hydrogen KW - carbon KW - hydrocarbons KW - oxides KW - reduction KW - Fischer-Tropsch-type reactions KW - magnetite KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859790470?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Fischer-Tropsch+reactions%3B+not+the+simple+chemistry+we+were+always+led+to+believe&rft.au=Nuth%2C+J+A%3BJohnson%2C+N+M%3BFerguson%2C+F+T%3BAnonymous&rft.aulast=Nuth&rft.aufirst=J&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5038.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 7 N1 - Last updated - 2017-01-19 N1 - SubjectsTermNotLitGenreText - amorphous materials; carbon; carbon monoxide; catalysis; chemical reactions; cosmochemistry; diffusion; Fischer-Tropsch-type reactions; gaseous phase; hydrocarbons; hydrogen; iron; iron silicates; magnetite; metals; organic compounds; oxides; rates; reduction; silicates; solar nebula; solid phase; temperature ER - TY - JOUR T1 - Aluminum-magnesium chronology of the rim of a Murchison Type A CAI AN - 1859790455; 2017-003831 JF - Annual Meeting of the Meteoritical Society AU - Matzel, J AU - Jacobsen, B AU - Simon, J I AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5372 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - magnesium KW - stony meteorites KW - ion probe data KW - isotopes KW - calcium-aluminum inclusions KW - Mg-26 KW - mass spectra KW - stable isotopes KW - Murchison Meteorite KW - meteorites KW - radioactive isotopes KW - chronology KW - aluminum KW - Wark-Lovering rims KW - inclusions KW - Al-27/Al-26 KW - spectra KW - chondrites KW - alkaline earth metals KW - isotope ratios KW - thermal metamorphism KW - carbonaceous chondrites KW - metamorphism KW - solar nebula KW - aqueous alteration KW - metals KW - petrography KW - NanoSIMS KW - CM chondrites KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859790455?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Aluminum-magnesium+chronology+of+the+rim+of+a+Murchison+Type+A+CAI&rft.au=Matzel%2C+J%3BJacobsen%2C+B%3BSimon%2C+J+I%3BAnonymous&rft.aulast=Matzel&rft.aufirst=J&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5372.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 5 N1 - Last updated - 2017-01-19 N1 - SubjectsTermNotLitGenreText - Al-27/Al-26; alkaline earth metals; aluminum; aqueous alteration; calcium-aluminum inclusions; carbonaceous chondrites; chondrites; chronology; CM chondrites; inclusions; ion probe data; isotope ratios; isotopes; magnesium; mass spectra; metals; metamorphism; meteorites; Mg-26; Murchison Meteorite; NanoSIMS; petrography; radioactive isotopes; solar nebula; spectra; stable isotopes; stony meteorites; thermal metamorphism; Wark-Lovering rims ER - TY - JOUR T1 - First results from the MAVEN magnetic field investigation AN - 1859789795; 2017-005136 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Connerney, Jack E P AU - Espley, J R AU - Oliversen, R AU - Sheppard, D AU - DiBraccio, Gina A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1080 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - terrestrial planets KW - Siding Spring Comet KW - planets KW - MAVEN Mission KW - comets KW - spacecraft KW - Mars KW - orbital observations KW - magnetometers KW - magnetic field KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859789795?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=First+results+from+the+MAVEN+magnetic+field+investigation&rft.au=Connerney%2C+Jack+E+P%3BEspley%2C+J+R%3BOliversen%2C+R%3BSheppard%2C+D%3BDiBraccio%2C+Gina+A%3BAnonymous&rft.aulast=Connerney&rft.aufirst=Jack+E&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1080.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 1 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 29, 2016 N1 - Last updated - 2017-01-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - comets; instruments; magnetic field; magnetometers; Mars; MAVEN Mission; orbital observations; planets; Siding Spring Comet; spacecraft; terrestrial planets ER - TY - JOUR T1 - Recognizing sulfate and phosphate complexes adsorbed onto nanophase weathering products on Mars AN - 1859789788; 2017-005171 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Rampe, Elizabeth B AU - Morris, R V AU - Archer, P D, Jr AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2689 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - silicates KW - near-infrared spectra KW - X-ray diffraction data KW - nanophase materials KW - Mars KW - laboratory studies KW - oxides KW - spectra KW - synthetic materials KW - Mossbauer spectra KW - water KW - sulfates KW - secondary minerals KW - phosphates KW - adsorption KW - ferrihydrite KW - weathering KW - clay minerals KW - terrestrial planets KW - planets KW - allophane KW - detection KW - evolved gas analysis KW - sheet silicates KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859789788?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Recognizing+sulfate+and+phosphate+complexes+adsorbed+onto+nanophase+weathering+products+on+Mars&rft.au=Rampe%2C+Elizabeth+B%3BMorris%2C+R+V%3BArcher%2C+P+D%2C+Jr%3BAnonymous&rft.aulast=Rampe&rft.aufirst=Elizabeth&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2689.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 16 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on July 28, 2016 N1 - Last updated - 2017-01-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - adsorption; allophane; clay minerals; detection; evolved gas analysis; ferrihydrite; laboratory studies; Mars; Mossbauer spectra; nanophase materials; near-infrared spectra; oxides; phosphates; planets; secondary minerals; sheet silicates; silicates; spectra; sulfates; synthetic materials; terrestrial planets; water; weathering; X-ray diffraction data ER - TY - JOUR T1 - Iron-manganese redox reactions in Endeavour Crater rim apron rocks AN - 1859789734; 2017-005169 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Ming, Douglas W AU - Mittlefehldt, D W AU - Gellert, R AU - Peretyazhko, T AU - Clark, B C AU - Morris, R V AU - Yen, A S AU - Arvidson, R E AU - Crumpler, L S AU - Farrand, W H AU - Grant, J A, III AU - Jolliff, B L AU - Parker, T J AU - Schroeder, C AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2676 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - Noachian KW - Mars KW - manganese KW - iron KW - Mars Exploration Rover KW - transport KW - spectra KW - Grasberg Formation KW - pH KW - Eh KW - Meridiani Planum KW - Burns Formation KW - Opportunity Rover KW - oxidation KW - veins KW - terrestrial planets KW - planets KW - alpha particle X-ray spectra KW - precipitation KW - metals KW - nickel KW - sulfur KW - mobilization KW - Matijevic Formation KW - Endeavour Crater KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859789734?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Iron-manganese+redox+reactions+in+Endeavour+Crater+rim+apron+rocks&rft.au=Ming%2C+Douglas+W%3BMittlefehldt%2C+D+W%3BGellert%2C+R%3BPeretyazhko%2C+T%3BClark%2C+B+C%3BMorris%2C+R+V%3BYen%2C+A+S%3BArvidson%2C+R+E%3BCrumpler%2C+L+S%3BFarrand%2C+W+H%3BGrant%2C+J+A%2C+III%3BJolliff%2C+B+L%3BParker%2C+T+J%3BSchroeder%2C+C%3BAnonymous&rft.aulast=Ming&rft.aufirst=Douglas&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2676.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 9 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on July 27, 2016 N1 - Last updated - 2017-01-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alpha particle X-ray spectra; Burns Formation; Eh; Endeavour Crater; Grasberg Formation; iron; manganese; Mars; Mars Exploration Rover; Matijevic Formation; Meridiani Planum; metals; mobilization; nickel; Noachian; Opportunity Rover; oxidation; pH; planets; precipitation; spectra; sulfur; terrestrial planets; transport; veins ER - TY - JOUR T1 - Smectite formation from basaltic glass under acidic conditions on Mars AN - 1859789139; 2017-005177 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Peretyazhko, Tanya S AU - Sutter, B AU - Morris, R V AU - Agresti, D G AU - Le, L AU - Ming, Douglas W AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2404 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - silicates KW - mineral interlayer KW - alteration KW - experimental studies KW - X-ray diffraction data KW - saponite KW - smectite KW - Mars KW - electron microscopy data KW - iron KW - clay minerals KW - terrestrial planets KW - planets KW - metals KW - acidic composition KW - sheet silicates KW - spectra KW - chemical composition KW - basaltic composition KW - SEM data KW - pH KW - Eh KW - Mossbauer spectra KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859789139?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Smectite+formation+from+basaltic+glass+under+acidic+conditions+on+Mars&rft.au=Peretyazhko%2C+Tanya+S%3BSutter%2C+B%3BMorris%2C+R+V%3BAgresti%2C+D+G%3BLe%2C+L%3BMing%2C+Douglas+W%3BAnonymous&rft.aulast=Peretyazhko&rft.aufirst=Tanya&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2404.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 3 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on July 29, 2016 N1 - Last updated - 2017-01-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - acidic composition; alteration; basaltic composition; chemical composition; clay minerals; Eh; electron microscopy data; experimental studies; iron; Mars; metals; mineral interlayer; Mossbauer spectra; pH; planets; saponite; SEM data; sheet silicates; silicates; smectite; spectra; terrestrial planets; X-ray diffraction data ER - TY - JOUR T1 - Silica retention and enrichment in open-system chemical weathering on Mars AN - 1859789118; 2017-005167 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Yen, A S AU - Ming, Douglas W AU - Gellert, R AU - Clark, B C AU - Mittlefehldt, D W AU - Morris, R V AU - Thompson, L M AU - Berger, J AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2380 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - magnesium KW - Spirit Rover KW - enrichment KW - Mars KW - landing sites KW - metasomatism KW - Gale Crater KW - Mars Exploration Rover KW - open systems KW - silica KW - aluminum KW - Curiosity Rover KW - hydrothermal alteration KW - spectra KW - Gusev Crater KW - Meridiani Planum KW - chemical weathering KW - alkaline earth metals KW - Opportunity Rover KW - weathering KW - terrestrial planets KW - aqueous alteration KW - planets KW - Alpha Particle X-ray Spectometer KW - alpha particle X-ray spectra KW - metals KW - Mars Science Laboratory KW - mobilization KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859789118?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Silica+retention+and+enrichment+in+open-system+chemical+weathering+on+Mars&rft.au=Yen%2C+A+S%3BMing%2C+Douglas+W%3BGellert%2C+R%3BClark%2C+B+C%3BMittlefehldt%2C+D+W%3BMorris%2C+R+V%3BThompson%2C+L+M%3BBerger%2C+J%3BAnonymous&rft.aulast=Yen&rft.aufirst=A&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2380.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 13 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on July 27, 2016 N1 - Last updated - 2017-01-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alkaline earth metals; Alpha Particle X-ray Spectometer; alpha particle X-ray spectra; aluminum; aqueous alteration; chemical weathering; Curiosity Rover; enrichment; Gale Crater; Gusev Crater; hydrothermal alteration; landing sites; magnesium; Mars; Mars Exploration Rover; Mars Science Laboratory; Meridiani Planum; metals; metasomatism; mobilization; open systems; Opportunity Rover; planets; silica; spectra; Spirit Rover; terrestrial planets; weathering ER - TY - JOUR T1 - MHD model results of solar wind plasma interaction with Mars and comparison with MAVEN observations AN - 1859789097; 2017-005186 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Ma, Y J AU - Russell, C T AU - Nagy, A F AU - Toth, G AU - Halekas, J S AU - Connerney, Jack E P AU - Espley, J R AU - Mahaffy, Paul R AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1202 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - MAVEN Mission KW - plasma KW - magnetohydrodynamics KW - solar wind KW - Solar Wind Ion Analyzer KW - Mars KW - simulation KW - magnetic field KW - terrestrial planets KW - models KW - planets KW - rotation KW - orbital observations KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859789097?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=MHD+model+results+of+solar+wind+plasma+interaction+with+Mars+and+comparison+with+MAVEN+observations&rft.au=Ma%2C+Y+J%3BRussell%2C+C+T%3BNagy%2C+A+F%3BToth%2C+G%3BHalekas%2C+J+S%3BConnerney%2C+Jack+E+P%3BEspley%2C+J+R%3BMahaffy%2C+Paul+R%3BAnonymous&rft.aulast=Ma&rft.aufirst=Y&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1202.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 2 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 2, 2016 N1 - Last updated - 2017-01-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - magnetic field; magnetohydrodynamics; Mars; MAVEN Mission; models; orbital observations; planets; plasma; rotation; simulation; solar wind; Solar Wind Ion Analyzer; terrestrial planets ER - TY - JOUR T1 - Possible yardangs of Titan and western China reveal winds and surface erosion AN - 1859788751; 2017-005211 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Radebaugh, Jani AU - Lorenz, Ralph D AU - Paillou, P AU - Farr, T G AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2746 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - eolian features KW - orientation KW - icy satellites KW - terrestrial environment KW - Far East KW - erosion KW - arid environment KW - wind erosion KW - landforms KW - erosion features KW - deserts KW - yardangs KW - Cassini-Huygens Mission KW - SAR KW - fluvial features KW - Titan Satellite KW - terrestrial comparison KW - Dunhuang China KW - western China KW - satellites KW - Asia KW - winds KW - China KW - 23:Geomorphology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859788751?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Possible+yardangs+of+Titan+and+western+China+reveal+winds+and+surface+erosion&rft.au=Radebaugh%2C+Jani%3BLorenz%2C+Ralph+D%3BPaillou%2C+P%3BFarr%2C+T+G%3BAnonymous&rft.aulast=Radebaugh&rft.aufirst=Jani&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2746.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 17 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 10, 2016 N1 - Last updated - 2017-01-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - arid environment; Asia; Cassini-Huygens Mission; China; deserts; Dunhuang China; eolian features; erosion; erosion features; Far East; fluvial features; icy satellites; landforms; orientation; SAR; satellites; terrestrial comparison; terrestrial environment; Titan Satellite; western China; wind erosion; winds; yardangs ER - TY - JOUR T1 - MAVEN measurments of the ion escape rate from Mars AN - 1859788750; 2017-005139 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Brain, David A AU - Dong, Y AU - Fortier, K AU - Fang, X AU - McFadden, J P AU - Halekas, J S AU - Connerney, Jack E P AU - Eparvier, Frank G AU - Dong, C AU - Bougher, S W AU - Ma, Y J AU - Modolo, R AU - Lillis, R J AU - Luhmann, J G AU - Curry, S M AU - Seki, K AU - Jakosky, B M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2663 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - MAVEN Mission KW - magnetohydrodynamics KW - solar wind KW - rates KW - Mars KW - simulation KW - ions KW - measurement KW - terrestrial planets KW - planets KW - Suprathermal and Thermal Ion Composition instrument KW - STATIC instrument KW - atmospheric escape KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859788750?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=MAVEN+measurments+of+the+ion+escape+rate+from+Mars&rft.au=Brain%2C+David+A%3BDong%2C+Y%3BFortier%2C+K%3BFang%2C+X%3BMcFadden%2C+J+P%3BHalekas%2C+J+S%3BConnerney%2C+Jack+E+P%3BEparvier%2C+Frank+G%3BDong%2C+C%3BBougher%2C+S+W%3BMa%2C+Y+J%3BModolo%2C+R%3BLillis%2C+R+J%3BLuhmann%2C+J+G%3BCurry%2C+S+M%3BSeki%2C+K%3BJakosky%2C+B+M%3BAnonymous&rft.aulast=Brain&rft.aufirst=David&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2663.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 12 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 29, 2016 N1 - Last updated - 2017-01-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - atmospheric escape; ions; magnetohydrodynamics; Mars; MAVEN Mission; measurement; planets; rates; simulation; solar wind; STATIC instrument; Suprathermal and Thermal Ion Composition instrument; terrestrial planets ER - TY - JOUR T1 - Early solar system alkali fractionation events recorded by K-Ca isotopes in the Yamato-74442 LL-chondritic breccia AN - 1855321500; 2017-002488 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Yokoyama, Tatsunori AU - Misawa, K AU - Okano, O AU - Shih, C Y AU - Nyquist, L E AU - Simon, J I AU - Tappa, M J AU - Yoneda, S AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1695 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - calcium KW - ordinary chondrites KW - stony meteorites KW - Guangrao Meteorite KW - isotopes KW - angrite KW - thermal ionization mass spectra KW - mass spectra KW - K-40 KW - L chondrites KW - stable isotopes KW - Shaw Meteorite KW - meteorites KW - radioactive isotopes KW - chronology KW - spectra KW - chondrites KW - Leedey Meteorite KW - alkaline earth metals KW - Yamato Meteorites KW - Bhola Meteorite KW - breccia KW - Zhaodong Meteorite KW - isotope ratios KW - alkali metals KW - LL chondrites KW - achondrites KW - Y 74442 KW - early solar system KW - Ca-44/Ca-40 KW - D'Orbigny Meteorite KW - metals KW - potassium KW - Peace River Meteorite KW - chemical fractionation KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1855321500?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Early+solar+system+alkali+fractionation+events+recorded+by+K-Ca+isotopes+in+the+Yamato-74442+LL-chondritic+breccia&rft.au=Adelson%2C+Roger&rft.aulast=Adelson&rft.aufirst=Roger&rft.date=1997-10-01&rft.volume=60&rft.issue=1&rft.spage=0_10&rft.isbn=&rft.btitle=&rft.title=Historian&rft.issn=00182370&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/1695.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 16 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Apr. 11, 2016 N1 - Last updated - 2017-01-05 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; alkali metals; alkaline earth metals; angrite; Bhola Meteorite; breccia; Ca-44/Ca-40; calcium; chemical fractionation; chondrites; chronology; D'Orbigny Meteorite; early solar system; Guangrao Meteorite; isotope ratios; isotopes; K-40; L chondrites; Leedey Meteorite; LL chondrites; mass spectra; metals; meteorites; ordinary chondrites; Peace River Meteorite; potassium; radioactive isotopes; Shaw Meteorite; spectra; stable isotopes; stony meteorites; thermal ionization mass spectra; Y 74442; Yamato Meteorites; Zhaodong Meteorite ER - TY - JOUR T1 - The potassium-argon laser experiment (KArLE); in situ geochronology for planetary robotic missions AN - 1855318763; 2017-000711 JF - Annual Meeting of the Meteoritical Society AU - Cohen, B A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5353 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - methods KW - laser-induced breakdown spectroscopy KW - development KW - asteroids KW - Mars KW - laboratory studies KW - KArLE KW - chronology KW - noble gases KW - experimental studies KW - chemical analysis KW - in situ KW - Moon KW - alkali metals KW - measurement KW - emission spectroscopy KW - argon KW - terrestrial planets KW - planets KW - K/Ar KW - metals KW - potassium KW - potassium-argon laser experiment KW - spectroscopy KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1855318763?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=The+potassium-argon+laser+experiment+%28KArLE%29%3B+in+situ+geochronology+for+planetary+robotic+missions&rft.au=Cohen%2C+B+A%3BAnonymous&rft.aulast=Cohen&rft.aufirst=B&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5353.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 4 N1 - SuppNotes - Accessed on Aug. 17, 2016 N1 - Last updated - 2017-01-05 N1 - SubjectsTermNotLitGenreText - alkali metals; argon; asteroids; chemical analysis; chronology; development; emission spectroscopy; experimental studies; in situ; K/Ar; KArLE; laboratory studies; laser-induced breakdown spectroscopy; Mars; measurement; metals; methods; Moon; noble gases; planets; potassium; potassium-argon laser experiment; spectroscopy; terrestrial planets ER - TY - JOUR T1 - Magnetite surface provides prebiotic homochiral selectivity AN - 1855318743; 2017-000698 JF - Annual Meeting of the Meteoritical Society AU - Chan, Q H S AU - Zolensky, M E AU - Tsuchiyama, A AU - Martinez, J E AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5179 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - orientation KW - CI chondrites KW - stony meteorites KW - Orgueil Meteorite KW - astrobiology KW - electron backscattered diffraction data KW - chirality KW - carbonaceous chondrites KW - plaquettes KW - meteorites KW - focused ion beam KW - X-ray data KW - rotation KW - oxides KW - symmetry KW - molecular dynamics KW - computed tomography data KW - chondrites KW - magnetite KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1855318743?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Magnetite+surface+provides+prebiotic+homochiral+selectivity&rft.au=Chan%2C+Q+H+S%3BZolensky%2C+M+E%3BTsuchiyama%2C+A%3BMartinez%2C+J+E%3BAnonymous&rft.aulast=Chan&rft.aufirst=Q+H&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5179.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Last updated - 2017-01-05 N1 - SubjectsTermNotLitGenreText - astrobiology; carbonaceous chondrites; chirality; chondrites; CI chondrites; computed tomography data; electron backscattered diffraction data; focused ion beam; magnetite; meteorites; molecular dynamics; Orgueil Meteorite; orientation; oxides; plaquettes; rotation; stony meteorites; symmetry; X-ray data ER - TY - JOUR T1 - Majorite-garnet partitioning of the highly siderophile elements; new results and application to Mars AN - 1855318393; 2017-000721 JF - Annual Meeting of the Meteoritical Society AU - Danielson, L R AU - Righter, K AU - Waeselmann, N AU - Humayun, M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5343 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - silicates KW - experimental studies KW - garnet group KW - mantle KW - olivine group KW - Mars KW - siderophile elements KW - melts KW - terrestrial planets KW - nesosilicates KW - planets KW - partitioning KW - majorite KW - olivine KW - orthosilicates KW - highly siderophile elements KW - 02C:Geochemistry of rocks, soils, and sediments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1855318393?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Majorite-garnet+partitioning+of+the+highly+siderophile+elements%3B+new+results+and+application+to+Mars&rft.au=Danielson%2C+L+R%3BRighter%2C+K%3BWaeselmann%2C+N%3BHumayun%2C+M%3BAnonymous&rft.aulast=Danielson&rft.aufirst=L&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5343.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 7 N1 - SuppNotes - Accessed on Aug. 19, 2016 N1 - Last updated - 2017-01-05 N1 - SubjectsTermNotLitGenreText - experimental studies; garnet group; highly siderophile elements; majorite; mantle; Mars; melts; nesosilicates; olivine; olivine group; orthosilicates; partitioning; planets; siderophile elements; silicates; terrestrial planets ER - TY - JOUR T1 - Hematite indicator of high water to rock ratio alteration in Gale Crater AN - 1855318249; 2017-000685 JF - Annual Meeting of the Meteoritical Society AU - Bridges, J C AU - Schwenzer, S P AU - Leveille, R AU - Wiens, R C AU - McAdam, A AU - Conrad, P G AU - Kelley, S P AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5293 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - alteration KW - iron oxides KW - Mars KW - indicators KW - metasomatism KW - weathering KW - Sheepbed Mudstone KW - Gale Crater KW - terrestrial planets KW - models KW - planets KW - paleoenvironment KW - water-rock interaction KW - Hematite Ridge KW - hematite KW - diagenesis KW - Curiosity Rover KW - Mars Science Laboratory KW - oxides KW - water content KW - hydrothermal alteration KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1855318249?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Hematite+indicator+of+high+water+to+rock+ratio+alteration+in+Gale+Crater&rft.au=Bridges%2C+J+C%3BSchwenzer%2C+S+P%3BLeveille%2C+R%3BWiens%2C+R+C%3BMcAdam%2C+A%3BConrad%2C+P+G%3BKelley%2C+S+P%3BAnonymous&rft.aulast=Bridges&rft.aufirst=J&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5293.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 5 N1 - SuppNotes - Accessed on Aug. 12, 2016 N1 - Last updated - 2017-01-05 N1 - SubjectsTermNotLitGenreText - alteration; Curiosity Rover; diagenesis; Gale Crater; hematite; Hematite Ridge; hydrothermal alteration; indicators; iron oxides; Mars; Mars Science Laboratory; metasomatism; models; oxides; paleoenvironment; planets; Sheepbed Mudstone; terrestrial planets; water content; water-rock interaction; weathering ER - TY - JOUR T1 - Identification of Q from Saratov (L4) AN - 1855318019; 2017-000654 JF - Annual Meeting of the Meteoritical Society AU - Amari, Sachiko AU - Messenger, Scott AU - Clemett, Simon J AU - Meshik, Alexander AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5127 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - ordinary chondrites KW - stony meteorites KW - ion probe data KW - isotopes KW - Jupiter KW - mass spectra KW - L chondrites KW - stable isotopes KW - nitrogen KW - giant planets KW - meteorites KW - noble gases KW - carbon KW - helium KW - spectra KW - outer planets KW - chondrites KW - N-15/N-14 KW - isotope ratios KW - separation KW - C-13/C-12 KW - two-step laser mass spectra KW - Saratov Meteorite KW - phase Q KW - solar nebula KW - planets KW - NanoSIMS KW - He-4/He-3 KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1855318019?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Identification+of+Q+from+Saratov+%28L4%29&rft.au=Amari%2C+Sachiko%3BMessenger%2C+Scott%3BClemett%2C+Simon+J%3BMeshik%2C+Alexander%3BAnonymous&rft.aulast=Amari&rft.aufirst=Sachiko&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5127.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 11 N1 - SuppNotes - Accessed on Aug. 5, 2016 N1 - Last updated - 2017-01-05 N1 - SubjectsTermNotLitGenreText - C-13/C-12; carbon; chondrites; giant planets; He-4/He-3; helium; ion probe data; isotope ratios; isotopes; Jupiter; L chondrites; mass spectra; meteorites; N-15/N-14; NanoSIMS; nitrogen; noble gases; ordinary chondrites; outer planets; phase Q; planets; Saratov Meteorite; separation; solar nebula; spectra; stable isotopes; stony meteorites; two-step laser mass spectra ER - TY - JOUR T1 - The nucleus of 67P observed by VIRTIS/Rosetta; different from carbonacous chondrites and similar to D-type asteroids? AN - 1855317921; 2017-000665 JF - Annual Meeting of the Meteoritical Society AU - Beck, P AU - Quirico, E AU - Moroz, L V AU - Schmitt, B AU - Arnold, G AU - Ciarniello, M AU - Bona, L AU - Capaccioni, F AU - Filacchione, G AU - Erard, S AU - Leyrat, C AU - Bockelee-Morvan, D AU - Tosi, F AU - Raponi, A AU - Capria, M T AU - De Sanctis, M C AU - Piccioni, G AU - Barucci, A AU - Drossart, P AU - Markus, K AU - Palomba, E AU - Fonti, S AU - Crovisier, J AU - Carlson, R W AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5188 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - Visible InfraRed Thermal Imaging Spectrometer KW - cometary nucleus KW - stony meteorites KW - asteroids KW - optical spectra KW - ammonium ion KW - carbonaceous chondrites KW - VIRTIS KW - D-type asteoroids KW - infrared spectra KW - meteorites KW - photometry KW - organic compounds KW - organic acids KW - Rosetta Mission KW - comets KW - ice KW - carboxylic acids KW - spectra KW - Churyumov-Gerasimenko Comet KW - chondrites KW - reflectance KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1855317921?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=The+nucleus+of+67P+observed+by+VIRTIS%2FRosetta%3B+different+from+carbonacous+chondrites+and+similar+to+D-type+asteroids%3F&rft.au=Beck%2C+P%3BQuirico%2C+E%3BMoroz%2C+L+V%3BSchmitt%2C+B%3BArnold%2C+G%3BCiarniello%2C+M%3BBona%2C+L%3BCapaccioni%2C+F%3BFilacchione%2C+G%3BErard%2C+S%3BLeyrat%2C+C%3BBockelee-Morvan%2C+D%3BTosi%2C+F%3BRaponi%2C+A%3BCapria%2C+M+T%3BDe+Sanctis%2C+M+C%3BPiccioni%2C+G%3BBarucci%2C+A%3BDrossart%2C+P%3BMarkus%2C+K%3BPalomba%2C+E%3BFonti%2C+S%3BCrovisier%2C+J%3BCarlson%2C+R+W%3BAnonymous&rft.aulast=Beck&rft.aufirst=P&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5188.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 8 N1 - SuppNotes - Accessed on Aug. 9, 2016 N1 - Last updated - 2017-01-05 N1 - SubjectsTermNotLitGenreText - ammonium ion; asteroids; carbonaceous chondrites; carboxylic acids; chondrites; Churyumov-Gerasimenko Comet; cometary nucleus; comets; D-type asteoroids; ice; infrared spectra; meteorites; optical spectra; organic acids; organic compounds; photometry; reflectance; Rosetta Mission; spectra; stony meteorites; VIRTIS; Visible InfraRed Thermal Imaging Spectrometer ER - TY - JOUR T1 - Fracture characterization of meteorites AN - 1855317909; 2017-000689 JF - Annual Meeting of the Meteoritical Society AU - Bryson, K L AU - Agrawal, P AU - Ostrowski, D R AU - Sears, D W G AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5361 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - fractured materials KW - fragmentation KW - stony meteorites KW - asteroids KW - textures KW - stress KW - characterization KW - clasts KW - veins KW - meteorites KW - fractures KW - physical properties KW - iron meteorites KW - grain boundaries KW - natural hazards KW - chondrites KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1855317909?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Fracture+characterization+of+meteorites&rft.au=Bryson%2C+K+L%3BAgrawal%2C+P%3BOstrowski%2C+D+R%3BSears%2C+D+W+G%3BAnonymous&rft.aulast=Bryson&rft.aufirst=K&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5361.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 4 N1 - SuppNotes - Accessed on Aug. 12, 2016 N1 - Last updated - 2017-01-05 N1 - SubjectsTermNotLitGenreText - asteroids; characterization; chondrites; clasts; fractured materials; fractures; fragmentation; grain boundaries; iron meteorites; meteorites; natural hazards; physical properties; stony meteorites; stress; textures; veins ER - TY - JOUR T1 - Planning ahead for Mars sample science in the human exploration era AN - 1855317640; 2017-000664 JF - Annual Meeting of the Meteoritical Society AU - Beaty, D W AU - Niles, P B AU - Bass, D S AU - Bell, M S AU - Bleacher, J E AU - Cabrol, N A AU - Conrad, P G AU - Eppler, D B AU - Hamilton, V E AU - Hays, L E AU - Head, J W AU - Kahre, M A AU - Levy, J S AU - Lyons, T W AU - Macalady, J L AU - Rafkin, S C R AU - Rice, J W AU - Rice, M S AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5335 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - terrestrial planets KW - planets KW - laboratory studies KW - habitat KW - sampling KW - planning KW - future KW - Mars KW - decision-making KW - human exploration KW - samples KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1855317640?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Planning+ahead+for+Mars+sample+science+in+the+human+exploration+era&rft.au=Beaty%2C+D+W%3BNiles%2C+P+B%3BBass%2C+D+S%3BBell%2C+M+S%3BBleacher%2C+J+E%3BCabrol%2C+N+A%3BConrad%2C+P+G%3BEppler%2C+D+B%3BHamilton%2C+V+E%3BHays%2C+L+E%3BHead%2C+J+W%3BKahre%2C+M+A%3BLevy%2C+J+S%3BLyons%2C+T+W%3BMacalady%2C+J+L%3BRafkin%2C+S+C+R%3BRice%2C+J+W%3BRice%2C+M+S%3BAnonymous&rft.aulast=Beaty&rft.aufirst=D&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5335.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - SuppNotes - Accessed on Aug. 9, 2016 N1 - Last updated - 2017-01-05 N1 - SubjectsTermNotLitGenreText - decision-making; future; habitat; human exploration; laboratory studies; Mars; planets; planning; samples; sampling; terrestrial planets ER - TY - JOUR T1 - Organo-carbonate association in carbonaceous chondrites AN - 1855317571; 2017-000697 JF - Annual Meeting of the Meteoritical Society AU - Chan, Q H S AU - Zolensky, M E AU - Fries, M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5138 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - Santa Cruz Meteorite KW - Jbilet Winselwan Meteorite KW - stony meteorites KW - WIS 91600 KW - Wisconsin Range Meteorites KW - thermal metamorphism KW - carbonaceous chondrites KW - metamorphism KW - Nagoya Meteorite KW - Murchison Meteorite KW - aqueous alteration KW - meteorites KW - organic compounds KW - Raman spectra KW - nucleation KW - spectra KW - CM chondrites KW - chondrites KW - carbonates KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1855317571?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Organo-carbonate+association+in+carbonaceous+chondrites&rft.au=Chan%2C+Q+H+S%3BZolensky%2C+M+E%3BFries%2C+M%3BAnonymous&rft.aulast=Chan&rft.aufirst=Q+H&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5138.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 8 N1 - Last updated - 2017-01-05 N1 - SubjectsTermNotLitGenreText - aqueous alteration; carbonaceous chondrites; carbonates; chondrites; CM chondrites; Jbilet Winselwan Meteorite; metamorphism; meteorites; Murchison Meteorite; Nagoya Meteorite; nucleation; organic compounds; Raman spectra; Santa Cruz Meteorite; spectra; stony meteorites; thermal metamorphism; WIS 91600; Wisconsin Range Meteorites ER - TY - JOUR T1 - Coordinated chemical and isotopic imaging of the Bells (CM2) Meteorite AN - 1855316793; 2017-000710 JF - Annual Meeting of the Meteoritical Society AU - Clemett, Simon J AU - Messenger, Scott AU - Nakamura-Messenger, K AU - Thomas-Keprta, K L AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5339 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - ammonium KW - stony meteorites KW - oxygen KW - isotopes KW - condensation KW - anomalies KW - carbonaceous chondrites KW - solar nebula KW - meteorites KW - organic compounds KW - fluorescence KW - hydrogen KW - carbon KW - sulfur KW - CM chondrites KW - chondrites KW - chemical composition KW - Bells Meteorite KW - ketones KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1855316793?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Coordinated+chemical+and+isotopic+imaging+of+the+Bells+%28CM2%29+Meteorite&rft.au=Clemett%2C+Simon+J%3BMessenger%2C+Scott%3BNakamura-Messenger%2C+K%3BThomas-Keprta%2C+K+L%3BAnonymous&rft.aulast=Clemett&rft.aufirst=Simon&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5339.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 6 N1 - SuppNotes - Accessed on Aug. 17, 2016 N1 - Last updated - 2017-01-05 N1 - SubjectsTermNotLitGenreText - ammonium; anomalies; Bells Meteorite; carbon; carbonaceous chondrites; chemical composition; chondrites; CM chondrites; condensation; fluorescence; hydrogen; isotopes; ketones; meteorites; organic compounds; oxygen; solar nebula; stony meteorites; sulfur ER - TY - JOUR T1 - Heat sources within the Greenland ice sheet; dissipation, temperate paleo-firn and cryo-hydrologic warming AN - 1849302606; 2016-104918 AB - Ice temperature profiles from the Greenland Ice Sheet contain information on the deformation history, past climates and recent warming. We present full-depth temperature profiles from two drill sites on a flow line passing through Swiss Camp, West Greenland. Numerical modeling reveals that ice temperatures are considerably higher than would be expected from heat diffusion and dissipation alone. The possible causes for this extra heat are evaluated using a Lagrangian heat flow model. The model results reveal that the observations can be explained with a combination of different processes: enhanced dissipation (strain heating) in ice-age ice, temperate paleo-firn, and cryo-hydrologic warming in deep crevasses. JF - The Cryosphere (Online) AU - Luethi, M P AU - Ryser, C AU - Andrews, L C AU - Catania, G A AU - Funk, M AU - Hawley, R L AU - Hoffman, M J AU - Neumann, T A Y1 - 2015 PY - 2015 DA - 2015 SP - 245 EP - 253 PB - Copernicus on behalf of the European Geosciences Union, Katlenburg-Lindau VL - 9 IS - 1 KW - ablation KW - strain KW - cryo-hydrologic warming KW - Greenland ice sheet KW - West Greenland KW - mechanism KW - freezing KW - thermal regime KW - Holocene KW - dissipation KW - climate change KW - temperature KW - Cenozoic KW - Greenland KW - thermal diffusivity KW - ice KW - heat flow KW - thickness KW - climate KW - hydrology KW - cryosphere KW - crevasses KW - Quaternary KW - numerical models KW - Arctic region KW - firn KW - thermal properties KW - equations KW - glacial features KW - deformation KW - ice sheets KW - measurement KW - models KW - boreholes KW - paleo-firn KW - heat sources KW - heating KW - glacial geology KW - upper Holocene KW - meltwater KW - 24:Quaternary geology KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849302606?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Cryosphere+%28Online%29&rft.atitle=Heat+sources+within+the+Greenland+ice+sheet%3B+dissipation%2C+temperate+paleo-firn+and+cryo-hydrologic+warming&rft.au=Luethi%2C+M+P%3BRyser%2C+C%3BAndrews%2C+L+C%3BCatania%2C+G+A%3BFunk%2C+M%3BHawley%2C+R+L%3BHoffman%2C+M+J%3BNeumann%2C+T+A&rft.aulast=Luethi&rft.aufirst=M&rft.date=2015-01-01&rft.volume=9&rft.issue=1&rft.spage=245&rft.isbn=&rft.btitle=&rft.title=The+Cryosphere+%28Online%29&rft.issn=1994-0424&rft_id=info:doi/ L2 - http://www.the-cryosphere.net/9/245/2015/tc-9-245-2015.pdf http://www.the-cryosphere.net/volumes_and_issues.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from Copernicus Gesellschaft, Katlenburg-Lindau, Germany N1 - Date revised - 2016-01-01 N1 - Number of references - 37 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2016-12-16 N1 - SubjectsTermNotLitGenreText - ablation; Arctic region; boreholes; Cenozoic; climate; climate change; crevasses; cryo-hydrologic warming; cryosphere; deformation; dissipation; equations; firn; freezing; glacial features; glacial geology; Greenland; Greenland ice sheet; heat flow; heat sources; heating; Holocene; hydrology; ice; ice sheets; measurement; mechanism; meltwater; models; numerical models; paleo-firn; Quaternary; strain; temperature; thermal diffusivity; thermal properties; thermal regime; thickness; upper Holocene; West Greenland ER - TY - JOUR T1 - Tunable superconducting gravity gradiometer for Mars climate, atmosphere, and gravity field investigation AN - 1840620720; 2016-095453 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Griggs, C E AU - Paik, H J AU - Moody, M V AU - Han, S C AU - Rowlands, D D AU - Lemoine, F G AU - Shirron, P J AU - Li, X AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1735 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - gravimeters KW - technology KW - geophysical methods KW - accelerometers KW - atmosphere KW - Mars KW - gradiometers KW - terrestrial planets KW - planets KW - gravity methods KW - gravity field KW - orbital observations KW - superconducting gravimeters KW - instruments KW - climate KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840620720?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Tunable+superconducting+gravity+gradiometer+for+Mars+climate%2C+atmosphere%2C+and+gravity+field+investigation&rft.au=Griggs%2C+C+E%3BPaik%2C+H+J%3BMoody%2C+M+V%3BHan%2C+S+C%3BRowlands%2C+D+D%3BLemoine%2C+F+G%3BShirron%2C+P+J%3BLi%2C+X%3BAnonymous&rft.aulast=Griggs&rft.aufirst=C&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1735.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 13, 2016 N1 - Last updated - 2016-11-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - accelerometers; atmosphere; climate; geophysical methods; gradiometers; gravimeters; gravity field; gravity methods; instruments; Mars; orbital observations; planets; superconducting gravimeters; technology; terrestrial planets ER - TY - JOUR T1 - Adventitious carbon on primary sample containment metal surfaces AN - 1840620643; 2016-095392 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Calaway, Michael J AU - Fries, M D AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1517 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - graphite KW - organic compounds KW - Raman spectra KW - carbon KW - hydrocarbons KW - contamination control KW - cleaning methods KW - spectra KW - native elements KW - X-ray photoelectron spectra KW - samples KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840620643?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Adventitious+carbon+on+primary+sample+containment+metal+surfaces&rft.au=Calaway%2C+Michael+J%3BFries%2C+M+D%3BAnonymous&rft.aulast=Calaway&rft.aufirst=Michael&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1517.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 6 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on May 17, 2016 N1 - Last updated - 2016-11-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - carbon; cleaning methods; contamination control; graphite; hydrocarbons; native elements; organic compounds; Raman spectra; samples; spectra; X-ray photoelectron spectra ER - TY - JOUR T1 - Laser remote sensing for planetary surfaces and atmosphere characterization from robotic platform AN - 1840619456; 2016-095425 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Abedin, M N AU - Bradley, A T AU - Ismail, S AU - Sharma, S K AU - Misra, A K AU - Lucey, Paul G AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1340 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - clouds KW - laser methods KW - characterization KW - atmosphere KW - Mars KW - terrestrial planets KW - Raman spectroscopy KW - planets KW - organic compounds KW - lidar methods KW - fluorescence KW - alcohols KW - aerosols KW - robotics KW - isopropanol KW - spectroscopy KW - instruments KW - remote sensing KW - 20:Applied geophysics KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840619456?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Laser+remote+sensing+for+planetary+surfaces+and+atmosphere+characterization+from+robotic+platform&rft.au=Abedin%2C+M+N%3BBradley%2C+A+T%3BIsmail%2C+S%3BSharma%2C+S+K%3BMisra%2C+A+K%3BLucey%2C+Paul+G%3BAnonymous&rft.aulast=Abedin&rft.aufirst=M&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1340.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 1, 2016 N1 - Last updated - 2016-11-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - aerosols; alcohols; atmosphere; characterization; clouds; fluorescence; instruments; isopropanol; laser methods; lidar methods; Mars; organic compounds; planets; Raman spectroscopy; remote sensing; robotics; spectroscopy; terrestrial planets ER - TY - JOUR T1 - Stratospheric Infra-Red Imaging and Spectroscopy for Planetary Science (SIRIS-PS) AN - 1840619025; 2016-095459 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Hibbitts, C A AU - Kremic, T AU - Cheng, A AU - Bernasconi, P AU - Rivkin, A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2152 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - Ceres KW - asteroids KW - telescope methods KW - Moon KW - concepts KW - dwarf planets KW - infrared spectroscopy KW - stratosphere KW - balloon missions KW - spectroscopy KW - instruments KW - airborne methods KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840619025?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Stratospheric+Infra-Red+Imaging+and+Spectroscopy+for+Planetary+Science+%28SIRIS-PS%29&rft.au=Hibbitts%2C+C+A%3BKremic%2C+T%3BCheng%2C+A%3BBernasconi%2C+P%3BRivkin%2C+A%3BAnonymous&rft.aulast=Hibbitts&rft.aufirst=C&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2152.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 9 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 16, 2016 N1 - Last updated - 2016-11-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - airborne methods; asteroids; balloon missions; Ceres; concepts; dwarf planets; infrared spectroscopy; instruments; Moon; spectroscopy; stratosphere; telescope methods ER - TY - JOUR T1 - Measuring bulk carbon, hydrogen, and sulfur from orbit; modeling gamma-ray spectroscopy of carbonaceous asteroids AN - 1840618614; 2016-095432 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Lim, Lucy F AU - Starr, Richard D AU - Evans, Larry G AU - Parsons, Ann M AU - Zolensky, Michael E AU - Boynton, William V AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1681 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - carbonaceous composition KW - galactic cosmic rays KW - stony meteorites KW - asteroids KW - Monte Carlo analysis KW - statistical analysis KW - radiation damage KW - gamma-ray spectroscopy KW - carbonaceous chondrites KW - ureilite KW - achondrites KW - Mars Odyssey KW - models KW - meteorites KW - hydrogen KW - carbon KW - spacecraft KW - sulfur KW - cosmic rays KW - orbital observations KW - MESSENGER Mission KW - chondrites KW - spectroscopy KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840618614?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Measuring+bulk+carbon%2C+hydrogen%2C+and+sulfur+from+orbit%3B+modeling+gamma-ray+spectroscopy+of+carbonaceous+asteroids&rft.au=Lim%2C+Lucy+F%3BStarr%2C+Richard+D%3BEvans%2C+Larry+G%3BParsons%2C+Ann+M%3BZolensky%2C+Michael+E%3BBoynton%2C+William+V%3BAnonymous&rft.aulast=Lim&rft.aufirst=Lucy&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1681.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 13 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on June 6, 2016 N1 - Last updated - 2016-11-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; asteroids; carbon; carbonaceous chondrites; carbonaceous composition; chondrites; cosmic rays; galactic cosmic rays; gamma-ray spectroscopy; hydrogen; Mars Odyssey; MESSENGER Mission; meteorites; models; Monte Carlo analysis; orbital observations; radiation damage; spacecraft; spectroscopy; statistical analysis; stony meteorites; sulfur; ureilite ER - TY - JOUR T1 - Remote Raman detection of frost on minerals AN - 1840617582; 2016-095422 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Misra, A K AU - Sharma, S K AU - Acosta-Maeda, T E AU - Berlanga, G AU - Clegg, S M AU - Wiens, R C AU - Abedin, M N AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1553 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - water KW - methods KW - experimental studies KW - chemical analysis KW - sulfates KW - temperature KW - carbon dioxide KW - calcite KW - Raman spectroscopy KW - Raman spectra KW - detection KW - ice KW - gypsum KW - low temperature KW - spectra KW - spectroscopy KW - carbonates KW - minerals KW - remote sensing KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840617582?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Remote+Raman+detection+of+frost+on+minerals&rft.au=Misra%2C+A+K%3BSharma%2C+S+K%3BAcosta-Maeda%2C+T+E%3BBerlanga%2C+G%3BClegg%2C+S+M%3BWiens%2C+R+C%3BAbedin%2C+M+N%3BAnonymous&rft.aulast=Misra&rft.aufirst=A&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1553.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 11 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 31, 2016 N1 - Last updated - 2016-11-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - calcite; carbon dioxide; carbonates; chemical analysis; detection; experimental studies; gypsum; ice; low temperature; methods; minerals; Raman spectra; Raman spectroscopy; remote sensing; spectra; spectroscopy; sulfates; temperature; water ER - TY - JOUR T1 - Optical ranging in the solar system; science requirements and opportunities AN - 1840617357; 2016-095458 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Smith, D E AU - Zuber, M T AU - Sun, X AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1288 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - solar system KW - experimental studies KW - technology KW - Moon KW - Lunar Reconnaissance Orbiter KW - Mars KW - altimetry KW - optical ranging KW - exploration KW - terrestrial planets KW - planets KW - LADEE Mission KW - Mercury Planet KW - LOLA KW - MOLA KW - MESSENGER Mission KW - accuracy KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840617357?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Optical+ranging+in+the+solar+system%3B+science+requirements+and+opportunities&rft.au=Smith%2C+D+E%3BZuber%2C+M+T%3BSun%2C+X%3BAnonymous&rft.aulast=Smith&rft.aufirst=D&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1288.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 9 N1 - PubXState - TX N1 - SuppNotes - Accessed on June 15, 2016 N1 - Last updated - 2016-11-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - accuracy; altimetry; experimental studies; exploration; instruments; LADEE Mission; LOLA; Lunar Reconnaissance Orbiter; Mars; Mercury Planet; MESSENGER Mission; MOLA; Moon; optical ranging; planets; solar system; technology; terrestrial planets ER - TY - JOUR T1 - Neutron spectrometer prospecting during the Mojave volatiles project analog field test AN - 1840616502; 2016-093426 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Elphic, Richard C AU - Heldmann, J L AU - Colaprete, Anthony AU - Hunt, D R AU - Deans, M C AU - Lim, D S AU - Foil, G AU - Fong, T AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2885 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - United States KW - albedo KW - bulk density KW - Moon KW - volatiles KW - neutrons KW - neutron probe KW - Mojave Volatiles Project KW - hydrogen KW - natural analogs KW - Mojave Desert KW - instruments KW - field studies KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840616502?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Neutron+spectrometer+prospecting+during+the+Mojave+volatiles+project+analog+field+test&rft.au=Elphic%2C+Richard+C%3BHeldmann%2C+J+L%3BColaprete%2C+Anthony%3BHunt%2C+D+R%3BDeans%2C+M+C%3BLim%2C+D+S%3BFoil%2C+G%3BFong%2C+T%3BAnonymous&rft.aulast=Elphic&rft.aufirst=Richard&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/2885.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 4 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 31, 2016 N1 - Last updated - 2016-11-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - albedo; bulk density; field studies; hydrogen; instruments; Mojave Desert; Mojave Volatiles Project; Moon; natural analogs; neutron probe; neutrons; United States; volatiles ER - TY - JOUR T1 - JSC Advanced Curation; research and development for current collections and future sample return mission demands AN - 1840616219; 2016-093417 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Fries, Marc D AU - Allen, Carlton C AU - Calaway, Michael J AU - Evans, Cynthia A AU - Stansbery, E K AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2805 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - Johnson Space Center KW - Advanced Curation project KW - technology KW - clean methods KW - development KW - cryogenic technology KW - sample return KW - government agencies KW - astrobiology KW - Mars KW - research KW - samples KW - temperature KW - terrestrial planets KW - planets KW - curation KW - organic compounds KW - NASA KW - low temperature KW - robotics KW - preservation KW - collections KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840616219?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=JSC+Advanced+Curation%3B+research+and+development+for+current+collections+and+future+sample+return+mission+demands&rft.au=Fries%2C+Marc+D%3BAllen%2C+Carlton+C%3BCalaway%2C+Michael+J%3BEvans%2C+Cynthia+A%3BStansbery%2C+E+K%3BAnonymous&rft.aulast=Fries&rft.aufirst=Marc&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/2805.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 29 N1 - PubXState - TX N1 - SuppNotes - Accessed on Aug. 30, 2016 N1 - Last updated - 2016-11-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Advanced Curation project; astrobiology; clean methods; collections; cryogenic technology; curation; development; government agencies; Johnson Space Center; low temperature; Mars; NASA; organic compounds; planets; preservation; research; robotics; sample return; samples; technology; temperature; terrestrial planets ER - TY - JOUR T1 - The Icebreaker drill system; sample acquisition and delivery for the lunar resource prospecting mission AN - 1840616039; 2016-093436 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Zacny, K AU - Paulsen, G AU - Chu, P AU - Mellerowicz, B AU - Yaggi, B AU - Kleinhenz, J AU - Smith, Jim AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1614 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - soils KW - Moon KW - Arctic region KW - Mars KW - cuttings KW - Icebreaker drill system KW - concepts KW - temperature KW - terrestrial planets KW - planets KW - volatiles KW - Antarctica KW - sampling KW - ice KW - testing KW - drilling KW - Lunar Resource Prospecting Mission concept KW - regolith KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840616039?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=The+Icebreaker+drill+system%3B+sample+acquisition+and+delivery+for+the+lunar+resource+prospecting+mission&rft.au=Zacny%2C+K%3BPaulsen%2C+G%3BChu%2C+P%3BMellerowicz%2C+B%3BYaggi%2C+B%3BKleinhenz%2C+J%3BSmith%2C+Jim%3BAnonymous&rft.aulast=Zacny&rft.aufirst=K&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/1614.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 5 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Sept. 2, 2016 N1 - Last updated - 2016-11-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Antarctica; Arctic region; concepts; cuttings; drilling; ice; Icebreaker drill system; instruments; Lunar Resource Prospecting Mission concept; Mars; Moon; planets; regolith; sampling; soils; temperature; terrestrial planets; testing; volatiles ER - TY - JOUR T1 - CubeSat deployables on the lunar surface? AN - 1840616004; 2016-093424 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Clarke, P E AU - Didion, J AU - Cox, R AU - Ghafoor, N AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1109 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - Moon KW - CubeSat KW - Lunar Environmental Monitoring Station KW - Apollo Program KW - Apollo Lunar Surface Experiments Package KW - concepts KW - ALSEP KW - instruments KW - design KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840616004?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=CubeSat+deployables+on+the+lunar+surface%3F&rft.au=Clarke%2C+P+E%3BDidion%2C+J%3BCox%2C+R%3BGhafoor%2C+N%3BAnonymous&rft.aulast=Clarke&rft.aufirst=P&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/1109.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 2 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on Aug. 31, 2016 N1 - Last updated - 2016-11-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - ALSEP; Apollo Lunar Surface Experiments Package; Apollo Program; concepts; CubeSat; design; instruments; Lunar Environmental Monitoring Station; Moon ER - TY - JOUR T1 - Atypical amino acid structural and isotopic compositions in the CR2 chondrite Miller Range 090001 and the CH3 chondrite Sayh Al Uhaymir 290 AN - 1840615067; 2016-093378 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Burton, Aaron S AU - Elsila, Jamie E AU - Parker, E T AU - Glavin, Daniel P AU - Dworkin, J P AU - Bartoschewitz, R AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2242 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - Miller Range Meteorites KW - CH chondrites KW - N-15/N-14 KW - MIL 090001 KW - stony meteorites KW - isotopes KW - SAU 290 KW - isotope ratios KW - alanine KW - C-13/C-12 KW - glycine KW - carbonaceous chondrites KW - stable isotopes KW - nitrogen KW - meteorites KW - organic compounds KW - organic acids KW - CR chondrites KW - carbon KW - amino acids KW - Sayh al Uhaymir Meteorites KW - chondrites KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840615067?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Atypical+amino+acid+structural+and+isotopic+compositions+in+the+CR2+chondrite+Miller+Range+090001+and+the+CH3+chondrite+Sayh+Al+Uhaymir+290&rft.au=Burton%2C+Aaron+S%3BElsila%2C+Jamie+E%3BParker%2C+E+T%3BGlavin%2C+Daniel+P%3BDworkin%2C+J+P%3BBartoschewitz%2C+R%3BAnonymous&rft.aulast=Burton&rft.aufirst=Aaron&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/2242.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 14 N1 - PubXState - TX N1 - Document feature - 3 tables N1 - SuppNotes - Accessed on Aug. 16, 2016 N1 - Last updated - 2016-11-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alanine; amino acids; C-13/C-12; carbon; carbonaceous chondrites; CH chondrites; chondrites; CR chondrites; glycine; isotope ratios; isotopes; meteorites; MIL 090001; Miller Range Meteorites; N-15/N-14; nitrogen; organic acids; organic compounds; SAU 290; Sayh al Uhaymir Meteorites; stable isotopes; stony meteorites ER - TY - JOUR T1 - Mass wasting in planetary environments; implications for seismicity AN - 1840614863; 2016-093397 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Weber, Renee C AU - Nahm, Amanda L AU - Schmerr, N C AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1485 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - boulders KW - numerical models KW - Moon KW - clastic sediments KW - Mars KW - peak ground velocity KW - terrestrial planets KW - models KW - planets KW - landslides KW - theoretical studies KW - seismicity KW - lobate scarps KW - Mercury Planet KW - mass movements KW - sediments KW - ground motion KW - scarps KW - earthquakes KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840614863?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Mass+wasting+in+planetary+environments%3B+implications+for+seismicity&rft.au=Weber%2C+Renee+C%3BNahm%2C+Amanda+L%3BSchmerr%2C+N+C%3BAnonymous&rft.aulast=Weber&rft.aufirst=Renee&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/1485.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 9 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 22, 2016 N1 - Last updated - 2016-11-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - boulders; clastic sediments; earthquakes; ground motion; landslides; lobate scarps; Mars; mass movements; Mercury Planet; models; Moon; numerical models; peak ground velocity; planets; regolith; scarps; sediments; seismicity; terrestrial planets; theoretical studies ER - TY - JOUR T1 - The potential for current tidal-tectonic activity on Charon from obliquity tides AN - 1840614793; 2016-093416 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Rhoden, Alyssa R AU - Henning, Wade AU - Hurford, Terry A AU - Bills, Bruce G AU - Hamilton, Douglas AU - Walker, Matthew E AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2456 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - icy satellites KW - obliquity of the ecliptic KW - Europa Satellite KW - orbits KW - stress KW - Galilean satellites KW - simulation KW - tides KW - fractures KW - viscosity KW - planetary interiors KW - Charon KW - tectonics KW - satellites KW - ice shells KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840614793?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=The+potential+for+current+tidal-tectonic+activity+on+Charon+from+obliquity+tides&rft.au=Rhoden%2C+Alyssa+R%3BHenning%2C+Wade%3BHurford%2C+Terry+A%3BBills%2C+Bruce+G%3BHamilton%2C+Douglas%3BWalker%2C+Matthew+E%3BAnonymous&rft.aulast=Rhoden&rft.aufirst=Alyssa&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/2456.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 11 N1 - PubXState - TX N1 - Document feature - 1 table N1 - SuppNotes - Accessed on Aug. 29, 2016 N1 - Last updated - 2016-11-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Charon; Europa Satellite; fractures; Galilean satellites; ice shells; icy satellites; obliquity of the ecliptic; orbits; planetary interiors; satellites; simulation; stress; tectonics; tides; viscosity ER - TY - JOUR T1 - Ruthenium in spinel from chassignite and olivine-phyric shergottite meteorites; constraints on the behavior of platinum-group elements and sulphur in Martian magmatic systems AN - 1832729332; 2016-089841 JF - Record - Geological Survey of Western Australia AU - Baumgartner, Raphael J AU - Fiorentini, Marco L AU - Baratoux, David AU - Ferriere, Ludovic AU - Locmelis, Marek AU - Sener, Kerim A AU - Gorczyk, W AU - Gessner, K AU - Lu, Y AU - Thebaud, Nicolas Y1 - 2015 PY - 2015 DA - 2015 SP - 25 PB - Geological Survey of Western Australia, Perth, West. Aust. SN - 0728-2311, 0728-2311 KW - silicates KW - Northwest Africa Meteorites KW - stony meteorites KW - laser methods KW - Martian meteorites KW - chassignite KW - mass spectra KW - olivine group KW - Y980459 KW - platinum group KW - melts KW - SNC Meteorites KW - NWA 2737 KW - meteorites KW - orthosilicates KW - oxides KW - spectra KW - Dhofar 019 KW - chemical composition KW - ulvospinel KW - Dhofar Meteorites KW - silicate melts KW - laser ablation KW - chromite KW - achondrites KW - nesosilicates KW - ICP mass spectra KW - Tissint Meteorite KW - shergottite KW - metals KW - magmas KW - sulfur KW - crystallization KW - spinel group KW - Chassigny Meteorite KW - ruthenium KW - 05B:Petrology of meteorites and tektites KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832729332?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Record+-+Geological+Survey+of+Western+Australia&rft.atitle=Ruthenium+in+spinel+from+chassignite+and+olivine-phyric+shergottite+meteorites%3B+constraints+on+the+behavior+of+platinum-group+elements+and+sulphur+in+Martian+magmatic+systems&rft.au=Baumgartner%2C+Raphael+J%3BFiorentini%2C+Marco+L%3BBaratoux%2C+David%3BFerriere%2C+Ludovic%3BLocmelis%2C+Marek%3BSener%2C+Kerim+A%3BGorczyk%2C+W%3BGessner%2C+K%3BLu%2C+Y%3BThebaud%2C+Nicolas&rft.aulast=Baumgartner&rft.aufirst=Raphael&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=25&rft.isbn=9781741686586&rft.btitle=&rft.title=Record+-+Geological+Survey+of+Western+Australia&rft.issn=07282311&rft_id=info:doi/ L2 - http://geodocs.dmp.wa.gov.au/document/getDocumentProperties.do?documentId=533481&cabinetId=1101&displayMode=thumbnail&context=documentSearch&from=topNav LA - English DB - GeoRef N1 - Conference title - 2nd lithosphere workshop N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Produced under license from the Commonwealth of Australia as represented by Geoscience Australia, Canberra, ACT, Australia N1 - Date revised - 2016-01-01 N1 - Number of references - 3 N1 - PubXState - West. Aust. N1 - SuppNotes - Poster abstract N1 - Last updated - 2016-10-27 N1 - SubjectsTermNotLitGenreText - achondrites; chassignite; Chassigny Meteorite; chemical composition; chromite; crystallization; Dhofar 019; Dhofar Meteorites; ICP mass spectra; laser ablation; laser methods; magmas; Martian meteorites; mass spectra; melts; metals; meteorites; nesosilicates; Northwest Africa Meteorites; NWA 2737; olivine group; orthosilicates; oxides; platinum group; ruthenium; shergottite; silicate melts; silicates; SNC Meteorites; spectra; spinel group; stony meteorites; sulfur; Tissint Meteorite; ulvospinel; Y980459 ER - TY - JOUR T1 - Sulfur and metal fertilization of the lower continental crust AN - 1832729229; 2016-089832 JF - Record - Geological Survey of Western Australia AU - Fiorentini, Marco L AU - Locmelis, Marek AU - Adam, John AU - Rushmer, Tracy AU - Zaccarini, Federica AU - Garuti, Giorgio AU - Vukmanovic, Zoja AU - Caruso, Stefano AU - Moroni, Marilena AU - Barnes, Steve AU - Reddy, Steve AU - Godel, Belinda AU - Gorczyk, W AU - Gessner, K AU - Lu, Y AU - Thebaud, Nicolas Y1 - 2015 PY - 2015 DA - 2015 SP - 10 PB - Geological Survey of Western Australia, Perth, West. Aust. SN - 0728-2311, 0728-2311 KW - silicates KW - mineral deposits, genesis KW - crust-mantle boundary KW - igneous rocks KW - ore-forming fluids KW - microstructure KW - mantle KW - Europe KW - continental crust KW - Lower Permian KW - fluid dynamics KW - melts KW - Italy KW - Southern Europe KW - plutonic rocks KW - mineral composition KW - mineralization KW - chemical composition KW - lower crust KW - mafic magmas KW - chain silicates KW - upper mantle KW - Paleozoic KW - amphibole group KW - migration of elements KW - pipes KW - Permian KW - Ivrea-Verbano Zone KW - emplacement KW - ultramafics KW - hydrothermal conditions KW - intrusions KW - magmas KW - Valmaggia Pipe KW - peridotites KW - metal ores KW - mobilization KW - sulfides KW - crust KW - 27A:Economic geology, geology of ore deposits KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832729229?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Record+-+Geological+Survey+of+Western+Australia&rft.atitle=Sulfur+and+metal+fertilization+of+the+lower+continental+crust&rft.au=Fiorentini%2C+Marco+L%3BLocmelis%2C+Marek%3BAdam%2C+John%3BRushmer%2C+Tracy%3BZaccarini%2C+Federica%3BGaruti%2C+Giorgio%3BVukmanovic%2C+Zoja%3BCaruso%2C+Stefano%3BMoroni%2C+Marilena%3BBarnes%2C+Steve%3BReddy%2C+Steve%3BGodel%2C+Belinda%3BGorczyk%2C+W%3BGessner%2C+K%3BLu%2C+Y%3BThebaud%2C+Nicolas&rft.aulast=Fiorentini&rft.aufirst=Marco&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=10&rft.isbn=9781741686586&rft.btitle=&rft.title=Record+-+Geological+Survey+of+Western+Australia&rft.issn=07282311&rft_id=info:doi/ L2 - http://geodocs.dmp.wa.gov.au/document/getDocumentProperties.do?documentId=533481&cabinetId=1101&displayMode=thumbnail&context=documentSearch&from=topNav LA - English DB - GeoRef N1 - Conference title - 2nd lithosphere workshop N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Produced under license from the Commonwealth of Australia as represented by Geoscience Australia, Canberra, ACT, Australia N1 - Date revised - 2016-01-01 N1 - PubXState - West. Aust. N1 - Last updated - 2016-10-27 N1 - SubjectsTermNotLitGenreText - amphibole group; chain silicates; chemical composition; continental crust; crust; crust-mantle boundary; emplacement; Europe; fluid dynamics; hydrothermal conditions; igneous rocks; intrusions; Italy; Ivrea-Verbano Zone; lower crust; Lower Permian; mafic magmas; magmas; mantle; melts; metal ores; microstructure; migration of elements; mineral composition; mineral deposits, genesis; mineralization; mobilization; ore-forming fluids; Paleozoic; peridotites; Permian; pipes; plutonic rocks; silicates; Southern Europe; sulfides; ultramafics; upper mantle; Valmaggia Pipe ER - TY - JOUR T1 - Lead isotopes in olivine-phyric shergottite Tissint; implications for the geochemical evolution of the shergottite source mantle AN - 1832728517; 2016-088904 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Moriwaki, R AU - Usui, T AU - Simon, J I AU - Jones, J H AU - Yokoyama, Takushi AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 2198 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - silicates KW - stony meteorites KW - isotopes KW - Martian meteorites KW - lead KW - olivine group KW - Mars KW - stable isotopes KW - Rb/Sr KW - SNC Meteorites KW - meteorites KW - Lu/Hf KW - radioactive isotopes KW - U/Th/Pb KW - cumulates KW - olivine KW - orthosilicates KW - geochemistry KW - magma oceans KW - experimental studies KW - textures KW - Pb-206/Pb-204 KW - isotope ratios KW - U-238/Pb-204 KW - achondrites KW - terrestrial planets KW - nesosilicates KW - planets KW - Tissint Meteorite KW - shergottite KW - Sm/Nd KW - porphyritic texture KW - metals KW - uranium KW - actinides KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832728517?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Lead+isotopes+in+olivine-phyric+shergottite+Tissint%3B+implications+for+the+geochemical+evolution+of+the+shergottite+source+mantle&rft.au=Moriwaki%2C+R%3BUsui%2C+T%3BSimon%2C+J+I%3BJones%2C+J+H%3BYokoyama%2C+Takushi%3BAnonymous&rft.aulast=Moriwaki&rft.aufirst=R&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=2198&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/2198.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 4 N1 - Last updated - 2016-10-27 N1 - SubjectsTermNotLitGenreText - achondrites; actinides; cumulates; experimental studies; geochemistry; isotope ratios; isotopes; lead; Lu/Hf; magma oceans; Mars; Martian meteorites; metals; meteorites; nesosilicates; olivine; olivine group; orthosilicates; Pb-206/Pb-204; planets; porphyritic texture; radioactive isotopes; Rb/Sr; shergottite; silicates; Sm/Nd; SNC Meteorites; stable isotopes; stony meteorites; terrestrial planets; textures; Tissint Meteorite; U-238/Pb-204; U/Th/Pb; uranium ER - TY - JOUR T1 - Cryovolcanic emplacement of domes on Europa AN - 1832723022; 2016-091659 AB - Many putative cryovolcanic features exist on the surface of Europa, and previous investigators have suggested that a subset of domes imaged by the Galileo spacecraft may be volcanic in origin. Assuming these domes were emplaced by viscous effusions of cryolava, models for the formation of volcanic domes on the terrestrial planets have been applied to the formation of cryovolcanic domes on Europa. Previous models applied to the emplacement of putative cryolava domes, which were initially developed for the formation of silicic domes on Earth and Venus, assumed a constant viscosity and, inter alia, non-physical singularities in the flow depth at the source of the eruption. Many of these shortcomings have been alleviated in our new modeling approach, which warrants a reassessment of the possibility of cryovolcanic domes on Europa. Assuming a constant volume of cryolava has been rapidly emplaced onto the surface, we have investigated the formation of cryovolcanic domes on Europa, exploring the effect of boundary conditions on the solution of the Boussinesq equation for pressure driven fluid flow in a cylindrical geometry. Our new similarity solution eliminates singularities that were inherent in previous models and employs a viscosity that increases exponentially with time to account for cryolava cooling. We have obtained axisymmetric profiles for dome height as a function of radial distance from the origin at multiple time steps. Our preliminary results show that at the onset of relaxation, bulk kinematic cryolava viscosities may be on the order of 10 (super 7) m (super 2) /sec, while the actual fluid lava viscosity within the dome may be much lower. The relaxation time to form the dome, which is linked to bulk cryolava rheology, is found to be approximately 3 years. Finally, cooling of the cryolava, while dominated by conduction through an icy skin, should not prevent fluids from advancing and relaxing to form domes within the allotted timescales. The next step of this work will be to apply this model to other putative cryovolcanic domes imaged by the Galileo spacecraft to constrain the range of emplacement times and eruption rates for this particular style of cryovolcanism on Europa. JF - Abstracts with Programs - Geological Society of America AU - Quick, Lynnae C AU - Glaze, Lori S AU - Baloga, Stephen M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 857 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832723022?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Cryovolcanic+emplacement+of+domes+on+Europa&rft.au=Quick%2C+Lynnae+C%3BGlaze%2C+Lori+S%3BBaloga%2C+Stephen+M%3BAnonymous&rft.aulast=Quick&rft.aufirst=Lynnae&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=857&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-10-27 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Surface evolution from orbital decay on Phobos and Triton AN - 1832722815; 2016-091650 AB - Phobos, the innermost satellite of Mars, displays an extensive system of grooves that are mostly symmetric about its sub-Mars point. Phobos is steadily spiraling inward due to the tides it raises, and will suffer tidal disruption before colliding with Mars. We calculate the surface stress field of the de-orbiting satellite and show that the first signs of tidal disruption are already present on its surface. Most of Phobos' prominent grooves have an excellent correlation with computed stress orientations. The model predicts an interior that has very low strength on the tidal evolution timescale, overlain by a approximately 10-100 m exterior shell that has elastic properties similar to lunar regolith. Shortly after the Viking spacecraft obtained the first geomorphic images of Phobos, it was proposed that stresses from orbital decay cause grooves. But, assuming a homogeneous Phobos, it proved impossible to account for the build-up of failure stress in the exterior regardless of the value assumed for Phobos' rigidity. Hence, the tidal model languished. Here, we revisit the tidal origin of surface fractures with a more detailed treatment that shows the production of significant stress in a surface layer, with a very strong correlation to the geometry of grooves. Our model results applied to surface observations imply that Phobos has a rubble pile interior that is nearly strengthless. A lunar-like cohesive regolith outer layer overlays the rubble pile interior. This outer layer behaves elastically and can experience significant tidal stress at levels able to drive tensile failure. Fissures can develop as the global body deforms due to increasing tides related to orbital decay. Phobos may have an active and evolving surface; an exciting target for further exploration. The interior predictions of this model can be evaluated by future detailed studies performed by an orbiter or lander. Finally, our results have direct implications for one other satellite in our Solar System, Triton. This icy satellite's orbit is decaying and surface evolution may be driven by its orbital migration. JF - Abstracts with Programs - Geological Society of America AU - Hurford, Terry AU - Asphaug, Erik AU - Spitale, Joseph AU - Hemingway, Douglas AU - Rhoden, Alyssa AU - Henning, Wade AU - Bills, Bruce AU - Kattenhorn, Simon AU - Walker, Matthew AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 856 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832722815?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Surface+evolution+from+orbital+decay+on+Phobos+and+Triton&rft.au=Hurford%2C+Terry%3BAsphaug%2C+Erik%3BSpitale%2C+Joseph%3BHemingway%2C+Douglas%3BRhoden%2C+Alyssa%3BHenning%2C+Wade%3BBills%2C+Bruce%3BKattenhorn%2C+Simon%3BWalker%2C+Matthew%3BAnonymous&rft.aulast=Hurford&rft.aufirst=Terry&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=856&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-10-27 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Surface mineralogy of Ceres by VIR on Dawn; implication on origin and evolution AN - 1832722794; 2016-091550 AB - The Visual and Infrared Mapping Spectrometer--VIR--on board of Dawn observed Ceres surface acquiring spectra since January 2015. Here we report about the surface mineralogy of Ceres. On approach to Ceres, Dawn obtains images and hyperspectral data on different occasions, starting in January 2015. VIR observed Ceres from 0.4 to 5 micron, with an Istantenous Field Of View (IFOV) of 250 mu rad. This spectral range includes the spectral region precluded from telescopic measurements due to the atmospheric absorptions. Ceres surface is very dark with an average albedo of 0.090+ or -0.006 at 0.55 mu m, consistent with HST data. The first data indicates an overall spectral homogeneity but some regions of the surface show spectral differences corresponding to different properties of the surface. The visible and near-IR range is almost flat and lacks of prominent bands, but the spectrum shows a strong phase reddening. The IR Ceres' spectrum is characterized by a broad band in the 3 micron region. Within this broad band, several other bands are present: a prominent absorption at 2.7 micron and other smaller bands at 3.05-3.1, 3.3-3.4 and 3.9-4 micron. The Ceres spectrum is modelled using Hapke theory using different endmembers. Results of the spectral modelling indicate that the presence of extensive water ice is not consistent with surface spectra acquired so far. Also brucite does not seem a major constituent of Ceres' surface. Other materials match better the spectrum. Here we will describe the Ceres' surface mineralogy and its implications in terms of origin and structure. Support by S. Marchi, T. B. McCord, H. Y. McSween, F. Capaccioni, M. T. Capria, J. P. Combe, M. Formisano, A. Frigeri, G. Magni, E. Palomba, R. Jaumann, C. M. Pieters. This work is supported the Italian Space Agencies, NASA, and from the German Space Agency. Support of the Dawn Instrument, Operations, and Science Teams is acknowledged. JF - Abstracts with Programs - Geological Society of America AU - De Sanctis, Maria Cristina AU - Ammannito, Eleonora AU - Raponi, Andrea AU - Ciarniello, M AU - Carrozzo, Giacomo AU - Tosi, Federico AU - McFadden, Lucy A AU - Raymond, Carol A AU - Russell, Christopher T AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 709 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832722794?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Surface+mineralogy+of+Ceres+by+VIR+on+Dawn%3B+implication+on+origin+and+evolution&rft.au=De+Sanctis%2C+Maria+Cristina%3BAmmannito%2C+Eleonora%3BRaponi%2C+Andrea%3BCiarniello%2C+M%3BCarrozzo%2C+Giacomo%3BTosi%2C+Federico%3BMcFadden%2C+Lucy+A%3BRaymond%2C+Carol+A%3BRussell%2C+Christopher+T%3BAnonymous&rft.aulast=De+Sanctis&rft.aufirst=Maria&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=709&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-10-27 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Exploring formation models for Ceres Tholi and Montes AN - 1832722792; 2016-091556 AB - Dawn Framing Camera (FC) images of Ceres surface revealed tholi and mons, i.e., positive relief features with sub-circular to irregular basal shapes, tentatively interpreted as volcanic constructs. Alternative formation mechanisms, e.g., uplifting by diapirism or shallow intrusions, are not excluded and would imply different geological and thermal histories. We derived local digital elevation models from FC images and found that the tholis and mons have varying height to diameter ratios and flank slopes. The largest tholus on Ceres (6 degrees N/310 degrees E) has a approximately 100 km wide base, a steep-sided dome shape with flank slopes of 10 degrees -20 degrees . The relatively flat top has an altitude of approximately 5 km relative to surrounding and is dissected by a approximately E-W trending pits chain. One of the highest mons on Ceres is located at 10 degrees S/316 degrees E. It is characterized by a cone-shaped profile with a approximately 30X20 km base, reaching a high of approximately 5 km relative to surrounding. Flank slopes approach a concave upward shape. Associated morphologies in the region include embayment contacts. Because of the varying morphometries of the reliefs, we explore several physical models of volcanic constructs, e.g., steep-sided dome and shield volcano. Physical models are based on radially spreading viscous gravity currents with a free upper surface. Testing formation scenarios will exploit recently developed methods, such as time-variable viscosity and fixed-volume models, and constant flow rate models. We aim to provide constraints on viable emplacement mechanisms for the different reliefs. C. A. Raymond, C. T. Russell, as well as the Dawn Instrument, Operations, and Science Teams are acknowledged. JF - Abstracts with Programs - Geological Society of America AU - Ruesch, Ottaviano AU - Platz, Thomas AU - McFadden, Lucy A AU - Hiesinger, Harald AU - Reddy, Vishnu AU - Schenk, Paul M AU - Schmidt, Britney Elyce AU - Buczkowski, Debra L AU - Sykes, Mark AU - Thangjam, Guneshwar Singh AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 710 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832722792?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Exploring+formation+models+for+Ceres+Tholi+and+Montes&rft.au=Ruesch%2C+Ottaviano%3BPlatz%2C+Thomas%3BMcFadden%2C+Lucy+A%3BHiesinger%2C+Harald%3BReddy%2C+Vishnu%3BSchenk%2C+Paul+M%3BSchmidt%2C+Britney+Elyce%3BBuczkowski%2C+Debra+L%3BSykes%2C+Mark%3BThangjam%2C+Guneshwar+Singh%3BAnonymous&rft.aulast=Ruesch&rft.aufirst=Ottaviano&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=710&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - Number of references - 6 N1 - PubXState - CO N1 - Last updated - 2016-10-27 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - An ice-rich mantle on Ceres from Dawn mapping of central pit and peak crater morphologies AN - 1832722726; 2016-091551 AB - Dawn survey-orbit mapping of Ceres at approximately 400 m pixel scales reveals a rich variety of well-preserved impact crater morphologies. Pre-arrival predictions were that craters might resemble those on the midsize icy moons of Saturn (of similar size and density to Ceres), and if so provide a direct observational test of whether Ceres had an ice-rich interior. Central peak craters do occur down to 10-15 km diameter, consistent with predictions. Depths of the freshest craters on Ceres are also consistent with those on ice-rich Dione and Tethys. Scaling from Saturn's moons suggested that central pit craters would not occur on Ceres. Central pit craters do occur on Ceres at diameters between approximately 50 and 150 km, consistent with gravity scaling from the larger Galilean satellites. Pit dimensions ( approximately 0.15 of crater diameter) are indeed very similar to those on Ganymede, though they appear to be approximately 50% shallower on Ceres. The lack of pits on Saturn's moons may be the anomaly, related to low internal temperatures or paucity of non-ice materials. Crater morphologies on Ceres thus indicate that the rheology of the outer layers of Ceres are dominated by ice (or materials that behave similarly; the contribution from non-ice phases is indeterminate). Impact morphologies deviate from pit morphology at >200 km diameters, indicating either impact into the core or effects of viscous relaxation. Arcuate crater chains, some likely secondary chains, extend from the large crater rims. More subtle differences between craters on Ceres and Ganymede/Dione/Tethys are expected as resolution increases during the mission, and indeed floor fractures and 'smooth' embayment materials are observed on Dantu and Occator, indicative of uplift and impact melt. "Bright spot" crater Occator itself has no superposed impact craters at 400 m pixel scales and likely formed (or was resurfaced) <100 Myr ago. The largest bright spot within Occator is located within the central pit (fainter bright material also occurs on the Dantu central pit and the Urvara central peak). The association of the most prominent bright spots with central pit structures suggests that either uplift or localized extraction of compositionally distinct material in the most strongly uplifted zones of large craters on Ceres is involved in bright spot formation, the details of which (currently) remain obscure. JF - Abstracts with Programs - Geological Society of America AU - Schenk, Paul M AU - Marchi, Simone AU - O'Brien, David P AU - Ruesch, Ottaviano AU - Bland, Michael AU - Castillo-Rogez, Julie C AU - Hiesinger, Harald AU - Hughson, Kynan H G AU - Le Corre, Lucille AU - Li, Jian-Yang AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 709 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832722726?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=An+ice-rich+mantle+on+Ceres+from+Dawn+mapping+of+central+pit+and+peak+crater+morphologies&rft.au=Schenk%2C+Paul+M%3BMarchi%2C+Simone%3BO%27Brien%2C+David+P%3BRuesch%2C+Ottaviano%3BBland%2C+Michael%3BCastillo-Rogez%2C+Julie+C%3BHiesinger%2C+Harald%3BHughson%2C+Kynan+H+G%3BLe+Corre%2C+Lucille%3BLi%2C+Jian-Yang%3BAnonymous&rft.aulast=Schenk&rft.aufirst=Paul&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=709&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-10-27 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Advanced Curation; solving current and future sample return problems AN - 1832687059; 768623-3 JF - Annual Meeting of the Meteoritical Society AU - Fries, M AU - Calaway, M AU - Evans, C AU - Mccubbin, F AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5379 PB - The Society, [United States] VL - 78 SN - 0735-049X, 0735-049X KW - methods KW - technology KW - asteroids KW - sample return KW - OSIRIS-REx Mission KW - government agencies KW - techniques KW - Mars KW - analysis KW - temperature KW - total organic carbon KW - future KW - carbon KW - Mars 2020 Mission KW - organic carbon KW - Advanced Curation project KW - samples KW - perchlorate KW - gases KW - terrestrial planets KW - planets KW - curation KW - sample preparation KW - organic compounds KW - NASA KW - preservation KW - storage KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832687059?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Advanced+Curation%3B+solving+current+and+future+sample+return+problems&rft.au=Fries%2C+M%3BCalaway%2C+M%3BEvans%2C+C%3BMccubbin%2C+F%3BAnonymous&rft.aulast=Fries&rft.aufirst=M&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5379.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 9 N1 - SuppNotes - Accessed on Aug. 29, 2016 N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - Advanced Curation project; analysis; asteroids; carbon; curation; future; gases; government agencies; Mars; Mars 2020 Mission; methods; NASA; organic carbon; organic compounds; OSIRIS-REx Mission; perchlorate; planets; preservation; sample preparation; sample return; samples; storage; techniques; technology; temperature; terrestrial planets; total organic carbon ER - TY - JOUR T1 - A meteor shower origin for Martian methane AN - 1832686982; 768623-4 JF - Annual Meeting of the Meteoritical Society AU - Fries, M AU - Christou, A AU - Archer, D AU - Conrad, P AU - Cooke, W AU - Eigenbrode, J AU - ten Kate, I L AU - Matney, M AU - Niles, P AU - Sykes, M AU - Steele, A AU - Treiman, A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5286 PB - The Society, [United States] VL - 78 SN - 0735-049X, 0735-049X KW - plumes KW - methane KW - orbits KW - photochemistry KW - aliphatic hydrocarbons KW - Mars KW - alkanes KW - ultraviolet radiation KW - terrestrial planets KW - planets KW - organic compounds KW - comets KW - electromagnetic radiation KW - photolysis KW - carbon KW - meteor showers KW - hydrocarbons KW - heterogeneity KW - cometary dust KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832686982?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=A+meteor+shower+origin+for+Martian+methane&rft.au=Fries%2C+M%3BChristou%2C+A%3BArcher%2C+D%3BConrad%2C+P%3BCooke%2C+W%3BEigenbrode%2C+J%3Bten+Kate%2C+I+L%3BMatney%2C+M%3BNiles%2C+P%3BSykes%2C+M%3BSteele%2C+A%3BTreiman%2C+A%3BAnonymous&rft.aulast=Fries&rft.aufirst=M&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5286.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 13 N1 - SuppNotes - Accessed on Aug. 30, 2016 N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; carbon; cometary dust; comets; electromagnetic radiation; heterogeneity; hydrocarbons; Mars; meteor showers; methane; orbits; organic compounds; photochemistry; photolysis; planets; plumes; terrestrial planets; ultraviolet radiation ER - TY - JOUR T1 - Organic coatings deposited by Fischer-Tropsch-type reactions AN - 1832686938; 768623-58 JF - Annual Meeting of the Meteoritical Society AU - Johnson, N M AU - Locke, D R AU - Yazzie, C A AU - Ferguson, F T AU - Nuth, J A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5370 PB - The Society, [United States] VL - 78 SN - 0735-049X, 0735-049X KW - experimental studies KW - aliphatic hydrocarbons KW - cosmochemistry KW - temperature KW - gases KW - early solar system KW - solid phase KW - solar nebula KW - organic compounds KW - chemical reactions KW - time factor KW - insoluble residues KW - hydrocarbons KW - Fischer-Tropsch-type reactions KW - mineral surface KW - aromatic hydrocarbons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832686938?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Organic+coatings+deposited+by+Fischer-Tropsch-type+reactions&rft.au=Johnson%2C+N+M%3BLocke%2C+D+R%3BYazzie%2C+C+A%3BFerguson%2C+F+T%3BNuth%2C+J+A%3BAnonymous&rft.aulast=Johnson&rft.aufirst=N&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5370.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 5 N1 - SuppNotes - Accessed on Sept. 9, 2016 N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; aromatic hydrocarbons; chemical reactions; cosmochemistry; early solar system; experimental studies; Fischer-Tropsch-type reactions; gases; hydrocarbons; insoluble residues; mineral surface; organic compounds; solar nebula; solid phase; temperature; time factor ER - TY - JOUR T1 - Microstructural investigation of a Wark-Lovering rim on a Vigarano CAI AN - 1832686900; 768623-24 JF - Annual Meeting of the Meteoritical Society AU - Han, J AU - Keller, L P AU - Needham, A W AU - Messenger, S AU - Simon, J I AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5243 PB - The Society, [United States] VL - 78 SN - 0735-049X, 0735-049X KW - sorosilicates KW - silicates KW - stony meteorites KW - calcium-aluminum inclusions KW - microstructure KW - perovskite KW - CV chondrites KW - metasomatism KW - temperature KW - anorthite KW - meteorites KW - melilite group KW - pyroxene group KW - clinopyroxene KW - melilite KW - inclusions KW - orthosilicates KW - oxides KW - framework silicates KW - diopside KW - chondrites KW - chain silicates KW - plagioclase KW - condensation KW - spinel KW - Vigarano Meteorite KW - hibonite KW - carbonaceous chondrites KW - solar nebula KW - gehlenite KW - partial pressure KW - Wark Lovering rim KW - feldspar group KW - high temperature KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832686900?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Microstructural+investigation+of+a+Wark-Lovering+rim+on+a+Vigarano+CAI&rft.au=Han%2C+J%3BKeller%2C+L+P%3BNeedham%2C+A+W%3BMessenger%2C+S%3BSimon%2C+J+I%3BAnonymous&rft.aulast=Han&rft.aufirst=J&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5243.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 7 N1 - SuppNotes - Accessed on Sept. 1, 2016 N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - anorthite; calcium-aluminum inclusions; carbonaceous chondrites; chain silicates; chondrites; clinopyroxene; condensation; CV chondrites; diopside; feldspar group; framework silicates; gehlenite; hibonite; high temperature; inclusions; melilite; melilite group; metasomatism; meteorites; microstructure; orthosilicates; oxides; partial pressure; perovskite; plagioclase; pyroxene group; silicates; solar nebula; sorosilicates; spinel; stony meteorites; temperature; Vigarano Meteorite; Wark Lovering rim ER - TY - JOUR T1 - Mineralogy of interplanetary dust particles from the Comet Giacobini-Zinner dust stream collections AN - 1832686708; 768624-45 JF - Annual Meeting of the Meteoritical Society AU - Nakamura-Messenger, K AU - Messenger, S AU - Westphal, A J AU - Palma, R L AU - Pepin, R O AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstrct no. 5322 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - silicates KW - olivine group KW - electron microscopy data KW - kamacite KW - interplanetary dust KW - TEM data KW - forsterite KW - nesosilicates KW - cosmic dust KW - pyroxene group KW - mineral composition KW - comets KW - meteor showers KW - orthosilicates KW - sheet silicates KW - alloys KW - orthopyroxene KW - Giacobini-Zinner Comet KW - Draconoid meteor shower KW - sulfides KW - cometary dust KW - enstatite KW - chain silicates KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832686708?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Mineralogy+of+interplanetary+dust+particles+from+the+Comet+Giacobini-Zinner+dust+stream+collections&rft.au=Nakamura-Messenger%2C+K%3BMessenger%2C+S%3BWestphal%2C+A+J%3BPalma%2C+R+L%3BPepin%2C+R+O%3BAnonymous&rft.aulast=Nakamura-Messenger&rft.aufirst=K&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5322.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 4 N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - alloys; chain silicates; cometary dust; comets; cosmic dust; Draconoid meteor shower; electron microscopy data; enstatite; forsterite; Giacobini-Zinner Comet; interplanetary dust; kamacite; meteor showers; mineral composition; nesosilicates; olivine group; orthopyroxene; orthosilicates; pyroxene group; sheet silicates; silicates; sulfides; TEM data ER - TY - JOUR T1 - Investigating protoplanetary carbon reservoirs and molecular inheritance along a galactic gradient AN - 1832686445; 768625-5 JF - Annual Meeting of the Meteoritical Society AU - Smith, R L AU - Blake, G A AU - Boogert, A C A AU - Pontoppidan, K M AU - Lockwood, A C AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5385 PB - The Society, [United States] VL - 78 SN - 0735-049X, 0735-049X KW - telescope methods KW - isotopes KW - isotope ratios KW - C-13/C-12 KW - cosmochemistry KW - protoplanetary disk KW - stable isotopes KW - gases KW - carbon dioxide KW - young stellar objects KW - carbon monoxide KW - carbon KW - spectra KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832686445?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Investigating+protoplanetary+carbon+reservoirs+and+molecular+inheritance+along+a+galactic+gradient&rft.au=Smith%2C+R+L%3BBlake%2C+G+A%3BBoogert%2C+A+C+A%3BPontoppidan%2C+K+M%3BLockwood%2C+A+C%3BAnonymous&rft.aulast=Smith&rft.aufirst=R&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5385.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 9 N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - C-13/C-12; carbon; carbon dioxide; carbon monoxide; cosmochemistry; gases; isotope ratios; isotopes; protoplanetary disk; spectra; stable isotopes; telescope methods; young stellar objects ER - TY - JOUR T1 - The mineralogy of Ceres* (*or something an awful lot like it) AN - 1832685357; 768625-81 JF - Annual Meeting of the Meteoritical Society AU - Zolensky, M E AU - Fries, M AU - Chan, Q H S AU - Kebukawa, Y AU - Steele, A AU - Bodnar, R J AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5270 PB - The Society, [United States] VL - 78 SN - 0735-049X, 0735-049X KW - halides KW - ordinary chondrites KW - stony meteorites KW - asteroids KW - dwarf planets KW - meteorites KW - mineral composition KW - inclusions KW - chlorides KW - chondrites KW - Zag Meteorite KW - water KW - CI chondrites KW - protoliths KW - breccia KW - Ceres KW - parent bodies KW - H chondrites KW - clasts KW - carbonaceous chondrites KW - halite KW - early solar system KW - aqueous alteration KW - organic compounds KW - Monahans Meteorite KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832685357?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=The+mineralogy+of+Ceres*+%28*or+something+an+awful+lot+like+it%29&rft.au=Zolensky%2C+M+E%3BFries%2C+M%3BChan%2C+Q+H+S%3BKebukawa%2C+Y%3BSteele%2C+A%3BBodnar%2C+R+J%3BAnonymous&rft.aulast=Zolensky&rft.aufirst=M&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5270.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 6 N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - aqueous alteration; asteroids; breccia; carbonaceous chondrites; Ceres; chlorides; chondrites; CI chondrites; clasts; dwarf planets; early solar system; H chondrites; halides; halite; inclusions; meteorites; mineral composition; Monahans Meteorite; ordinary chondrites; organic compounds; parent bodies; protoliths; stony meteorites; water; Zag Meteorite ER - TY - JOUR T1 - Fe and O EELS studies of ion irradiated Murchison CM2 carbonaceous chondrite matrix AN - 1832683496; 768623-63 JF - Annual Meeting of the Meteoritical Society AU - Keller, L P AU - Christoffersen, R AU - Dukes, C A AU - Baragiola, R A AU - Rahman, Z AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5354 PB - The Society, [United States] VL - 78 SN - 0735-049X, 0735-049X KW - silicates KW - irradiation KW - stony meteorites KW - oxygen KW - matrix KW - carbonaceous chondrites KW - iron KW - Murchison Meteorite KW - ferrous iron KW - meteorites KW - ferric iron KW - metals KW - sheet silicates KW - spectra KW - reduction KW - CM chondrites KW - chondrites KW - amorphization KW - electron energy loss spectra KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832683496?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Fe+and+O+EELS+studies+of+ion+irradiated+Murchison+CM2+carbonaceous+chondrite+matrix&rft.au=Keller%2C+L+P%3BChristoffersen%2C+R%3BDukes%2C+C+A%3BBaragiola%2C+R+A%3BRahman%2C+Z%3BAnonymous&rft.aulast=Keller&rft.aufirst=L&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5354.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 4 N1 - SuppNotes - Accessed on Sept. 12, 2016 N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - amorphization; carbonaceous chondrites; chondrites; CM chondrites; electron energy loss spectra; ferric iron; ferrous iron; iron; irradiation; matrix; metals; meteorites; Murchison Meteorite; oxygen; reduction; sheet silicates; silicates; spectra; stony meteorites ER - TY - JOUR T1 - Vesta before arrival at Ceres; regional surface composition AN - 1832683205; 768624-16 JF - Annual Meeting of the Meteoritical Society AU - McFadden, L A AU - McCord, T B AU - Scully, J E C AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5143 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - hydrates KW - carbonaceous composition KW - albedo KW - stony meteorites KW - Ceres KW - asteroids KW - Vesta Asteroid KW - cartography KW - optical spectra KW - diogenite KW - Dawn Mission KW - achondrites KW - dwarf planets KW - infrared spectra KW - morphology KW - meteorites KW - howardite KW - mixing KW - surface features KW - composition KW - eucrite KW - spectra KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832683205?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Vesta+before+arrival+at+Ceres%3B+regional+surface+composition&rft.au=McFadden%2C+L+A%3BMcCord%2C+T+B%3BScully%2C+J+E+C%3BAnonymous&rft.aulast=McFadden&rft.aufirst=L&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5143.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 12 N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - achondrites; albedo; asteroids; carbonaceous composition; cartography; Ceres; composition; Dawn Mission; diogenite; dwarf planets; eucrite; howardite; hydrates; infrared spectra; meteorites; mixing; morphology; optical spectra; regolith; spectra; stony meteorites; surface features; Vesta Asteroid ER - TY - JOUR T1 - Effect of a routine synchrotron X-ray microtomography scan on the amino acid content of the Murchison CM chondrite AN - 1832683030; 768623-2 JF - Annual Meeting of the Meteoritical Society AU - Friedrich, J M AU - Glavin, D P AU - Rivers, M L AU - Dworkin, J P AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5208 PB - The Society, [United States] VL - 78 SN - 0735-049X, 0735-049X KW - tomography KW - irradiation KW - stony meteorites KW - radiation damage KW - carbonaceous chondrites KW - X-ray microtomography KW - Murchison Meteorite KW - synchrotron radiation KW - meteorites KW - absorption KW - X-rays KW - organic compounds KW - organic acids KW - computed tomography KW - amino acids KW - X-ray analysis KW - CM chondrites KW - chondrites KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832683030?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Effect+of+a+routine+synchrotron+X-ray+microtomography+scan+on+the+amino+acid+content+of+the+Murchison+CM+chondrite&rft.au=Friedrich%2C+J+M%3BGlavin%2C+D+P%3BRivers%2C+M+L%3BDworkin%2C+J+P%3BAnonymous&rft.aulast=Friedrich&rft.aufirst=J&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5208.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 5 N1 - SuppNotes - Accessed on Aug. 29, 2016 N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - absorption; amino acids; carbonaceous chondrites; chondrites; CM chondrites; computed tomography; irradiation; meteorites; Murchison Meteorite; organic acids; organic compounds; radiation damage; stony meteorites; synchrotron radiation; tomography; X-ray analysis; X-ray microtomography; X-rays ER - TY - JOUR T1 - Parent body Venus; a primer for meteorite researchers AN - 1832681242; 768623-32 JF - Annual Meeting of the Meteoritical Society AU - Harvey, R P AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5036 PB - The Society, [United States] VL - 78 SN - 0735-049X, 0735-049X KW - volcanic rocks KW - stony meteorites KW - orbits KW - igneous rocks KW - Venus KW - simulation KW - carbon dioxide KW - meteorites KW - laboratory studies KW - volcanism KW - basalts KW - orbital observations KW - greenhouse effect KW - water KW - sulfur dioxide KW - chemical weathering KW - secondary minerals KW - parent bodies KW - atmosphere KW - achondrites KW - weathering KW - terrestrial planets KW - models KW - planets KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832681242?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Parent+body+Venus%3B+a+primer+for+meteorite+researchers&rft.au=Harvey%2C+R+P%3BAnonymous&rft.aulast=Harvey&rft.aufirst=R&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5036.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 8 N1 - SuppNotes - Accessed on Sept. 2, 2016 N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - achondrites; atmosphere; basalts; carbon dioxide; chemical weathering; greenhouse effect; igneous rocks; laboratory studies; meteorites; models; orbital observations; orbits; parent bodies; planets; secondary minerals; simulation; stony meteorites; sulfur dioxide; terrestrial planets; Venus; volcanic rocks; volcanism; water; weathering ER - TY - JOUR T1 - "Normal planetary" Ne-Q in Chelyabinsk and Mars AN - 1832681241; 768624-54 JF - Annual Meeting of the Meteoritical Society AU - Nyquist, L E AU - Park, J AU - Nagao, K AU - Haba, M K AU - Mikouchi, T AU - Kusakabe, M AU - Shih, C Y AU - Herzog, G F AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5054 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - silicates KW - ordinary chondrites KW - stony meteorites KW - isotopes KW - Martian meteorites KW - Dho 378 KW - solar wind KW - cosmogenic elements KW - stable isotopes KW - melts KW - Chelyabinsk Meteorite KW - SNC Meteorites KW - meteorites KW - impact melts KW - pyroxene group KW - noble gases KW - neon KW - chondrites KW - chain silicates KW - Dhofar Meteorites KW - isotope ratios KW - LL chondrites KW - Ne-22/Ne-21 KW - phase Q KW - Ne-22/Ne-20 KW - achondrites KW - shergottite KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832681241?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=%22Normal+planetary%22+Ne-Q+in+Chelyabinsk+and+Mars&rft.au=Nyquist%2C+L+E%3BPark%2C+J%3BNagao%2C+K%3BHaba%2C+M+K%3BMikouchi%2C+T%3BKusakabe%2C+M%3BShih%2C+C+Y%3BHerzog%2C+G+F%3BAnonymous&rft.aulast=Nyquist&rft.aufirst=L&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5054.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 8 N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - achondrites; chain silicates; Chelyabinsk Meteorite; chondrites; cosmogenic elements; Dho 378; Dhofar Meteorites; impact melts; isotope ratios; isotopes; LL chondrites; Martian meteorites; melts; meteorites; Ne-22/Ne-20; Ne-22/Ne-21; neon; noble gases; ordinary chondrites; phase Q; pyroxene group; shergottite; silicates; SNC Meteorites; solar wind; stable isotopes; stony meteorites ER - TY - JOUR T1 - The combined strength of thermodynamics and comparative planetology; application of activity models to core formation in terrestrial bodies AN - 1832681074; 768624-75 JF - Annual Meeting of the Meteoritical Society AU - Righter, K AU - Pando, K M AU - Danielson, L R AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5277 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - experimental studies KW - accretion KW - pressure KW - silicon KW - high pressure KW - temperature KW - terrestrial planets KW - models KW - planets KW - partitioning KW - metals KW - carbon KW - planetary interiors KW - germanium KW - sulfur KW - interplanetary comparison KW - core KW - thermodynamic properties KW - high temperature KW - activity KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832681074?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=The+combined+strength+of+thermodynamics+and+comparative+planetology%3B+application+of+activity+models+to+core+formation+in+terrestrial+bodies&rft.au=Righter%2C+K%3BPando%2C+K+M%3BDanielson%2C+L+R%3BAnonymous&rft.aulast=Righter&rft.aufirst=K&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5277.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 6 N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - accretion; activity; carbon; core; experimental studies; germanium; high pressure; high temperature; interplanetary comparison; metals; models; partitioning; planetary interiors; planets; pressure; silicon; sulfur; temperature; terrestrial planets; thermodynamic properties ER - TY - JOUR T1 - (super 40) Ar/ (super 39) Ar ages for lunar meteorites MIL 090034, MIL 090036, and MIL 090070 and excess (super 40) Ar in MIL 090036 AN - 1832680366; 768624-59 JF - Annual Meeting of the Meteoritical Society AU - Park, J AU - Nyquist, L E AU - Herzog, G F AU - Turrin, B D AU - Lindsay, F N AU - Delaney, J S AU - Swisher, C C, III AU - Shih, C Y AU - Yamaguchi, A AU - Shirai, N AU - Ebihara, M AU - Nagao, K AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5237 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - Miller Range Meteorites KW - Ar/Ar KW - lunar meteorites KW - breccia KW - stony meteorites KW - Moon KW - isotopes KW - igneous rocks KW - MIL 090034 KW - atmosphere KW - achondrites KW - stable isotopes KW - MIL 090036 KW - anorthosite KW - argon KW - meteorites KW - plutonic rocks KW - Ar-40 KW - dates KW - noble gases KW - absolute age KW - regolith KW - MIL 090070 KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832680366?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=%28super+40%29+Ar%2F+%28super+39%29+Ar+ages+for+lunar+meteorites+MIL+090034%2C+MIL+090036%2C+and+MIL+090070+and+excess+%28super+40%29+Ar+in+MIL+090036&rft.au=Park%2C+J%3BNyquist%2C+L+E%3BHerzog%2C+G+F%3BTurrin%2C+B+D%3BLindsay%2C+F+N%3BDelaney%2C+J+S%3BSwisher%2C+C+C%2C+III%3BShih%2C+C+Y%3BYamaguchi%2C+A%3BShirai%2C+N%3BEbihara%2C+M%3BNagao%2C+K%3BAnonymous&rft.aulast=Park&rft.aufirst=J&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5237.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 9 N1 - Document feature - illus. N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - absolute age; achondrites; anorthosite; Ar-40; Ar/Ar; argon; atmosphere; breccia; dates; igneous rocks; isotopes; lunar meteorites; meteorites; MIL 090034; MIL 090036; MIL 090070; Miller Range Meteorites; Moon; noble gases; plutonic rocks; regolith; stable isotopes; stony meteorites ER - TY - JOUR T1 - Comparing the foreign clast populations of Almahata Sitta and typical polymict ureilites, with implications AN - 1832680221; 768623-12 JF - Annual Meeting of the Meteoritical Society AU - Goodrich, C A AU - Fioretti, A M AU - O'Brien, D P AU - Zolensky, M AU - Jenniskens, P AU - Shaddad, M H AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5018 PB - The Society, [United States] VL - 78 SN - 0735-049X, 0735-049X KW - silicates KW - stony meteorites KW - polymict ureilite KW - matrix KW - aubrite KW - clasts KW - carbonaceous chondrites KW - ureilite KW - achondrites KW - electron probe data KW - meteorites KW - pyroxene group KW - rumurutiites KW - enstatite chondrites KW - Almahata Sitta Meteorite KW - orthopyroxene KW - heterogeneity KW - chondrites KW - enstatite KW - chain silicates KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832680221?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Comparing+the+foreign+clast+populations+of+Almahata+Sitta+and+typical+polymict+ureilites%2C+with+implications&rft.au=Goodrich%2C+C+A%3BFioretti%2C+A+M%3BO%27Brien%2C+D+P%3BZolensky%2C+M%3BJenniskens%2C+P%3BShaddad%2C+M+H%3BAnonymous&rft.aulast=Goodrich&rft.aufirst=C&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5018.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 14 N1 - SuppNotes - Accessed on Aug. 31, 2016 N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - achondrites; Almahata Sitta Meteorite; aubrite; carbonaceous chondrites; chain silicates; chondrites; clasts; electron probe data; enstatite; enstatite chondrites; heterogeneity; matrix; meteorites; orthopyroxene; polymict ureilite; pyroxene group; rumurutiites; silicates; stony meteorites; ureilite ER - TY - JOUR T1 - X-ray computed tomography and the radiation history of meteorites AN - 1832680082; 768624-97 JF - Annual Meeting of the Meteoritical Society AU - Sears, D W G AU - Ebel, D S AU - Wallace, S AU - Friedrich, J M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5156 PB - Meteoritical Society, [varies] VL - 78 SN - 0735-049X, 0735-049X KW - tomography KW - methods KW - ordinary chondrites KW - experimental studies KW - irradiation KW - stony meteorites KW - radiation damage KW - thermoluminescence KW - L chondrites KW - Bruderheim Meteorite KW - meteorites KW - X-ray computed tomography KW - computed tomography KW - X-ray analysis KW - heating KW - cosmic rays KW - chondrites KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832680082?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=X-ray+computed+tomography+and+the+radiation+history+of+meteorites&rft.au=Sears%2C+D+W+G%3BEbel%2C+D+S%3BWallace%2C+S%3BFriedrich%2C+J+M%3BAnonymous&rft.aulast=Sears&rft.aufirst=D+W&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5156.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 7 N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - Bruderheim Meteorite; chondrites; computed tomography; cosmic rays; experimental studies; heating; irradiation; L chondrites; meteorites; methods; ordinary chondrites; radiation damage; stony meteorites; thermoluminescence; tomography; X-ray analysis; X-ray computed tomography ER - TY - JOUR T1 - Constraining thermal processing of carbon-rich aggregates in xenolithic clasts from Sharps (H3.4) meteorite AN - 1832680062; 768623-62 JF - Annual Meeting of the Meteoritical Society AU - Kebukawa, Y AU - Zolensky, M E AU - Chan, Q H S AU - Fries, M AU - Steele, A AU - Kilcoyne, A L David AU - Rahman, Z AU - Cody, G D AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5158 PB - The Society, [United States] VL - 78 SN - 0735-049X, 0735-049X KW - ordinary chondrites KW - aggregate KW - stony meteorites KW - thermal alteration KW - thermal history KW - temperature KW - infrared spectra KW - XANES spectra KW - meteorites KW - FTIR spectra KW - carbon KW - inclusions KW - Sharps Meteorite KW - spectra KW - chondrites KW - xenoliths KW - electron microscopy data KW - native elements KW - H chondrites KW - clasts KW - X-ray spectra KW - TEM data KW - order-disorder KW - graphite KW - Raman spectra KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832680062?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Constraining+thermal+processing+of+carbon-rich+aggregates+in+xenolithic+clasts+from+Sharps+%28H3.4%29+meteorite&rft.au=Kebukawa%2C+Y%3BZolensky%2C+M+E%3BChan%2C+Q+H+S%3BFries%2C+M%3BSteele%2C+A%3BKilcoyne%2C+A+L+David%3BRahman%2C+Z%3BCody%2C+G+D%3BAnonymous&rft.aulast=Kebukawa&rft.aufirst=Y&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5158.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 4 N1 - SuppNotes - Accessed on Sept. 12, 2016 N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - aggregate; carbon; chondrites; clasts; electron microscopy data; FTIR spectra; graphite; H chondrites; inclusions; infrared spectra; meteorites; native elements; order-disorder; ordinary chondrites; Raman spectra; Sharps Meteorite; spectra; stony meteorites; TEM data; temperature; thermal alteration; thermal history; X-ray spectra; XANES spectra; xenoliths ER - TY - JOUR T1 - Meteorites found on Misfits Flat dry lake AN - 1832680061; 768623-56 JF - Annual Meeting of the Meteoritical Society AU - Jenniskens, P AU - Harlan, S AU - Zolensky, M AU - Yin, Q Z AU - Verosub, K L AU - Jull, A J AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5140 PB - The Society, [United States] VL - 78 SN - 0735-049X, 0735-049X KW - United States KW - strewn fields KW - ordinary chondrites KW - stony meteorites KW - Misfits Flat dry lake KW - Stagecoach Nevada KW - LL chondrites KW - Lyon County Nevada KW - metamorphism KW - meteorites KW - mineral composition KW - classification KW - petrography KW - Misfits Flat 002 KW - chondrites KW - shock metamorphism KW - Nevada KW - Misfits Flat 001 KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832680061?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Meteorites+found+on+Misfits+Flat+dry+lake&rft.au=Jenniskens%2C+P%3BHarlan%2C+S%3BZolensky%2C+M%3BYin%2C+Q+Z%3BVerosub%2C+K+L%3BJull%2C+A+J%3BAnonymous&rft.aulast=Jenniskens&rft.aufirst=P&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5140.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 2 N1 - SuppNotes - Accessed on Sept. 9, 2016 N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - chondrites; classification; LL chondrites; Lyon County Nevada; metamorphism; meteorites; mineral composition; Misfits Flat 001; Misfits Flat 002; Misfits Flat dry lake; Nevada; ordinary chondrites; petrography; shock metamorphism; Stagecoach Nevada; stony meteorites; strewn fields; United States ER - TY - JOUR T1 - Molecular tracers of nitrogen enrichment in prestellar cores; amines vs nitriles AN - 1832671656; 726459-31 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Milam, S N AU - Adande, G AU - Cordiner, M A AU - Wirstrom, E AU - Charnley, S B AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1934 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - nitriles KW - isotope fractionation KW - ammonium KW - N-15/N-14 KW - isotopes KW - isotope ratios KW - enrichment KW - C-13/C-12 KW - interstellar medium KW - cosmochemistry KW - stable isotopes KW - nitrogen KW - organic compounds KW - amines KW - comets KW - carbon KW - tracers KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832671656?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Molecular+tracers+of+nitrogen+enrichment+in+prestellar+cores%3B+amines+vs+nitriles&rft.au=Milam%2C+S+N%3BAdande%2C+G%3BCordiner%2C+M+A%3BWirstrom%2C+E%3BCharnley%2C+S+B%3BAnonymous&rft.aulast=Milam&rft.aufirst=S&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1934.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 14 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on Apr. 26, 2016 N1 - Last updated - 2017-01-24 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - amines; ammonium; C-13/C-12; carbon; comets; cosmochemistry; enrichment; interstellar medium; isotope fractionation; isotope ratios; isotopes; N-15/N-14; nitriles; nitrogen; organic compounds; stable isotopes; tracers ER - TY - JOUR T1 - Preliminary analysis of pyrite reactivity under Venusian temperature and atmosphere AN - 1832671294; 726459-20 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Radoman-Shaw, B G AU - Harvey, R P AU - Jacobson, N S AU - Costa, G C C AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2027 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - experimental studies KW - iron oxides KW - textures KW - Venus KW - atmosphere KW - temperature KW - carbon dioxide KW - terrestrial planets KW - planets KW - reactivity KW - chemical reactions KW - oxides KW - pyrite KW - TGA data KW - sulfides KW - pyrrhotite KW - mineral surface KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832671294?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Preliminary+analysis+of+pyrite+reactivity+under+Venusian+temperature+and+atmosphere&rft.au=Radoman-Shaw%2C+B+G%3BHarvey%2C+R+P%3BJacobson%2C+N+S%3BCosta%2C+G+C+C%3BAnonymous&rft.aulast=Radoman-Shaw&rft.aufirst=B&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2027.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Apr. 22, 2016 N1 - Last updated - 2017-01-24 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - atmosphere; carbon dioxide; chemical reactions; experimental studies; iron oxides; mineral surface; oxides; planets; pyrite; pyrrhotite; reactivity; sulfides; temperature; terrestrial planets; textures; TGA data; Venus ER - TY - JOUR T1 - The morphology of Fischer-Tropsch-type products AN - 1832667485; 726459-33 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Nuth, Joseph A, III AU - Johnson, Natasha M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1193 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - experimental studies KW - calcium-aluminum inclusions KW - temperature KW - solar nebula KW - morphology KW - organic compounds KW - cosmic dust KW - catalysis KW - chemical reactions KW - carbon KW - inclusions KW - oxides KW - nanotubes KW - Fischer-Tropsch-type reactions KW - mineral surface KW - magnetite KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832667485?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=The+morphology+of+Fischer-Tropsch-type+products&rft.au=Nuth%2C+Joseph+A%2C+III%3BJohnson%2C+Natasha+M%3BAnonymous&rft.aulast=Nuth&rft.aufirst=Joseph&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1193.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 9 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on Apr. 27, 2016 N1 - Last updated - 2017-01-24 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - calcium-aluminum inclusions; carbon; catalysis; chemical reactions; cosmic dust; experimental studies; Fischer-Tropsch-type reactions; inclusions; magnetite; mineral surface; morphology; nanotubes; organic compounds; oxides; solar nebula; temperature ER - TY - JOUR T1 - Pyrolysis-GCMS analysis of solid organic products from catalytic Fischer-Tropsch synthesis experiments AN - 1832666259; 726459-34 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Locke, Darren R AU - Yazzie, Cyriah A AU - Burton, Aaron S AU - Niles, Paul B AU - Johnson, Natasha M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1986 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - experimental studies KW - desorption KW - gas chromatograms KW - aliphatic hydrocarbons KW - mass spectra KW - temperature KW - organic compounds KW - catalysis KW - pyrolysis KW - ion chromatograms KW - insoluble residues KW - chromatograms KW - hydrocarbons KW - polycyclic aromatic hydrocarbons KW - oxides KW - spectra KW - Fischer-Tropsch-type reactions KW - synthesis KW - aromatic hydrocarbons KW - magnetite KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832666259?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Pyrolysis-GCMS+analysis+of+solid+organic+products+from+catalytic+Fischer-Tropsch+synthesis+experiments&rft.au=Locke%2C+Darren+R%3BYazzie%2C+Cyriah+A%3BBurton%2C+Aaron+S%3BNiles%2C+Paul+B%3BJohnson%2C+Natasha+M%3BAnonymous&rft.aulast=Locke&rft.aufirst=Darren&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1986.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 4 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Apr. 27, 2016 N1 - Last updated - 2017-01-24 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; aromatic hydrocarbons; catalysis; chromatograms; desorption; experimental studies; Fischer-Tropsch-type reactions; gas chromatograms; hydrocarbons; insoluble residues; ion chromatograms; magnetite; mass spectra; organic compounds; oxides; polycyclic aromatic hydrocarbons; pyrolysis; spectra; synthesis; temperature ER - TY - JOUR T1 - Predicting the mineral composition of dust aerosols; part 2; model evaluation and identification of key processes with observations AN - 1832662975; 765114-11 AB - A global compilation of nearly sixty measurement studies is used to evaluate two methods of simulating the mineral composition of dust aerosols in an Earth system model. Both methods are based upon a Mean Mineralogical Table (MMT) that relates the soil mineral fractions to a global atlas of arid soil type. The Soil Mineral Fraction (SMF) method assumes that the aerosol mineral fractions match the fractions of the soil. The MMT is based upon soil measurements after wet sieving, a process that destroys aggregates of soil particles that would have been emitted from the original, undisturbed soil. The second method approximately reconstructs the emitted aggregates. This model is referred to as the Aerosol Mineral Fraction (AMF) method because the mineral fractions of the aerosols differ from those of the wet-sieved parent soil, partly due to reaggregation. The AMF method remedies some of the deficiencies of the SMF method in comparison to observations. Only the AMF method exhibits phyllosilicate mass at silt sizes, where they are abundant according to observations. In addition, the AMF quartz fraction of silt particles is in better agreement with measured values, in contrast to the overestimated SMF fraction. Measurements at distinct clay and silt particle sizes are shown to be more useful for evaluation of the models, in contrast to the sum over all particles sizes that is susceptible to compensating errors, as illustrated by the SMF experiment. Model errors suggest that allocation of the emitted silt fraction of each mineral into the corresponding transported size categories is an important remaining source of uncertainty. Evaluation of both models and the MMT is hindered by the limited number of size-resolved measurements of mineral content that sparsely sample aerosols from the major dust sources. The importance of climate processes dependent upon aerosol mineral composition shows the need for global and routine mineral measurements. JF - Atmospheric Chemistry and Physics AU - Perlwitz, J P AU - Perez Garcia-Pando, C AU - Miller, R L Y1 - 2015 PY - 2015 DA - 2015 SP - 11629 EP - 11652 PB - Copernicus, Katlenburg-Lindau VL - 15 IS - 20 SN - 1680-7316, 1680-7316 KW - silicates KW - cycles KW - iron oxides KW - silica minerals KW - mean mineralogical table KW - simulation KW - observations KW - mass KW - mineral ratios KW - size distribution KW - mineral composition KW - errors KW - aerosol mineral fraction method KW - sampling KW - gypsum KW - tracers KW - sediments KW - oxides KW - framework silicates KW - uncertainty KW - soil mineral fraction method KW - soils KW - processes KW - experimental studies KW - ModelE2 KW - sulfates KW - clastic sediments KW - grain size KW - global KW - smectite KW - mineral fractions KW - kaolinite KW - illite KW - measurement KW - clay minerals KW - AMF method KW - dust KW - parent materials KW - quartz KW - aerosols KW - SMF method KW - sheet silicates KW - seasonal variations KW - feldspar group KW - carbonates KW - particles KW - minerals KW - 06A:Sedimentary petrology KW - 01A:General mineralogy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832662975?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Atmospheric+Chemistry+and+Physics&rft.atitle=Predicting+the+mineral+composition+of+dust+aerosols%3B+part+2%3B+model+evaluation+and+identification+of+key+processes+with+observations&rft.au=Perlwitz%2C+J+P%3BPerez+Garcia-Pando%2C+C%3BMiller%2C+R+L&rft.aulast=Perlwitz&rft.aufirst=J&rft.date=2015-01-01&rft.volume=15&rft.issue=20&rft.spage=11629&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Chemistry+and+Physics&rft.issn=16807316&rft_id=info:doi/ L2 - http://www.atmos-chem-phys.net/15/11629/2015/acp-15-11629-2015.pdf http://www.atmospheric-chemistry-and-physics.net/home.html LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data from Copernicus Gesellschaft, Katlenburg-Lindau, Germany N1 - Number of references - 112 N1 - Document feature - illus. incl. 1 table, sketch map N1 - SuppNotes - Includes appendices N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - aerosol mineral fraction method; aerosols; AMF method; carbonates; clastic sediments; clay minerals; cycles; dust; errors; experimental studies; feldspar group; framework silicates; global; grain size; gypsum; illite; iron oxides; kaolinite; mass; mean mineralogical table; measurement; mineral composition; mineral fractions; mineral ratios; minerals; ModelE2; observations; oxides; parent materials; particles; processes; quartz; sampling; seasonal variations; sediments; sheet silicates; silica minerals; silicates; simulation; size distribution; smectite; SMF method; soil mineral fraction method; soils; sulfates; tracers; uncertainty ER - TY - JOUR T1 - Predicting the mineral composition of dust aerosols; part 1; representing key processes AN - 1832654638; 765114-10 AB - Soil dust aerosols created by wind erosion are typically assigned globally uniform physical and chemical properties within Earth system models, despite known regional variations in the mineral content of the parent soil. Mineral composition of the aerosol particles is important to their interaction with climate, including shortwave absorption and radiative forcing, nucleation of cloud droplets and ice crystals, heterogeneous formation of sulfates and nitrates, and atmospheric processing of iron into bioavailable forms that increase the productivity of marine phytoplankton. Here, aerosol mineral composition is derived by extending a method that provides the composition of a wet-sieved soil. The extension accounts for measurements showing significant differences between the mineral fractions of the wet-sieved soil and the emitted aerosol concentration. For example, some phyllosilicate aerosols are more prevalent at silt sizes, even though they are nearly absent at these diameters in a soil whose aggregates are dispersed by wet sieving. We calculate the emitted mass of each mineral with respect to size by accounting for the disintegration of soil aggregates during wet sieving. These aggregates are emitted during mobilization and fragmentation of the original undispersed soil that is subject to wind erosion. The emitted aggregates are carried far downwind from their parent soil. The soil mineral fractions used to calculate the aggregates also include larger particles that are suspended only in the vicinity of the source. We calculate the emitted size distribution of these particles using a normalized distribution derived from aerosol measurements. In addition, a method is proposed for mixing minerals with small impurities composed of iron oxides. These mixtures are important for transporting iron far from the dust source, because pure iron oxides are more dense and vulnerable to gravitational removal than most minerals comprising dust aerosols. A limited comparison to measurements from North Africa shows that the model extensions result in better agreement, consistent with a more extensive comparison to global observations as well as measurements of elemental composition downwind of the Sahara, as described in companion articles. JF - Atmospheric Chemistry and Physics AU - Perlwitz, J P AU - Perez Garcia-Pando, C AU - Miller, R L Y1 - 2015 PY - 2015 DA - 2015 SP - 11593 EP - 11627 PB - Copernicus, Katlenburg-Lindau VL - 15 IS - 20 SN - 1680-7316, 1680-7316 KW - silicates KW - Morocco KW - iron oxides KW - North Africa KW - mass KW - size distribution KW - mineral composition KW - aerosol mineral fraction method KW - deflation KW - mixing KW - gypsum KW - framework silicates KW - algorithms KW - soil mineral fraction method KW - processes KW - annual variations KW - clastic sediments KW - textures KW - global KW - kaolinite KW - illite KW - distribution KW - measurement KW - dust KW - parent materials KW - quartz KW - Africa KW - aerosols KW - feldspar group KW - carbonates KW - particles KW - silica minerals KW - erosion KW - Tinfou Morocco KW - simulation KW - spatial variations KW - transport KW - tracers KW - sediments KW - oxides KW - soils KW - concentration KW - ModelE2 KW - sulfates KW - wind erosion KW - smectite KW - clay minerals KW - regional KW - sheet silicates KW - minerals KW - 06A:Sedimentary petrology KW - 01A:General mineralogy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832654638?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Atmospheric+Chemistry+and+Physics&rft.atitle=Predicting+the+mineral+composition+of+dust+aerosols%3B+part+1%3B+representing+key+processes&rft.au=Perlwitz%2C+J+P%3BPerez+Garcia-Pando%2C+C%3BMiller%2C+R+L&rft.aulast=Perlwitz&rft.aufirst=J&rft.date=2015-01-01&rft.volume=15&rft.issue=20&rft.spage=11593&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Chemistry+and+Physics&rft.issn=16807316&rft_id=info:doi/ L2 - http://www.atmos-chem-phys.net/15/11593/2015/acp-15-11593-2015.pdf http://www.atmospheric-chemistry-and-physics.net/home.html LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data from Copernicus Gesellschaft, Katlenburg-Lindau, Germany N1 - Number of references - 125 N1 - Document feature - illus. incl. 9 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - aerosol mineral fraction method; aerosols; Africa; algorithms; annual variations; carbonates; clastic sediments; clay minerals; concentration; deflation; distribution; dust; erosion; feldspar group; framework silicates; global; gypsum; illite; iron oxides; kaolinite; mass; measurement; mineral composition; minerals; mixing; ModelE2; Morocco; North Africa; oxides; parent materials; particles; processes; quartz; regional; sediments; sheet silicates; silica minerals; silicates; simulation; size distribution; smectite; soil mineral fraction method; soils; spatial variations; sulfates; textures; Tinfou Morocco; tracers; transport; wind erosion ER - TY - JOUR T1 - Geologic mapping of the Arsia Mons fan shaped deposit, Mars AN - 1832653356; 726463-14 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Dapremont, A M AU - Garry, W B AU - Williams, D A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1605 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - imagery KW - lava flows KW - THEMIS KW - cartography KW - subglacial processes KW - Arsia Mons KW - ArcGIS KW - channels KW - Mars KW - glacial features KW - Context Camera KW - terrestrial planets KW - planets KW - geographic information systems KW - fan-shaped deposits KW - mosaics KW - volcanism KW - ice KW - moraines KW - volcanoes KW - information systems KW - HiRISE KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832653356?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Geologic+mapping+of+the+Arsia+Mons+fan+shaped+deposit%2C+Mars&rft.au=Dapremont%2C+A+M%3BGarry%2C+W+B%3BWilliams%2C+D+A%3BAnonymous&rft.aulast=Dapremont&rft.aufirst=A&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/1605.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. incl. geol. sketch maps N1 - Last updated - 2017-01-24 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - ArcGIS; Arsia Mons; cartography; channels; Context Camera; fan-shaped deposits; geographic information systems; glacial features; HiRISE; ice; imagery; information systems; lava flows; Mars; moraines; mosaics; planets; subglacial processes; terrestrial planets; THEMIS; volcanism; volcanoes ER - TY - JOUR T1 - Testing the Mimas ocean hypothesis using tidal-tectonic theory AN - 1832646530; 724350-14 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Rhoden, Alyssa R AU - Tajeddine, Radwan AU - Henning, Wade AU - Hurford, Terry A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2379 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - water KW - icy satellites KW - failures KW - orbits KW - stress KW - tensile strength KW - eccentricity KW - tides KW - fractures KW - viscosity KW - planetary interiors KW - subsurface oceans KW - tectonics KW - satellites KW - libration KW - Mimas Satellite KW - ice shells KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832646530?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Testing+the+Mimas+ocean+hypothesis+using+tidal-tectonic+theory&rft.au=Rhoden%2C+Alyssa+R%3BTajeddine%2C+Radwan%3BHenning%2C+Wade%3BHurford%2C+Terry+A%3BAnonymous&rft.aulast=Rhoden&rft.aufirst=Alyssa&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2379.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 11 N1 - PubXState - TX N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2017-01-24 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - eccentricity; failures; fractures; ice shells; icy satellites; libration; Mimas Satellite; orbits; planetary interiors; satellites; stress; subsurface oceans; tectonics; tensile strength; tides; viscosity; water ER - TY - JOUR T1 - Dawn Framing Camera clear filter imaging on Ceres approach AN - 1832646213; 724350-48 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Nathues, A AU - Sykes, M V AU - Buettner, I AU - Buczkowski, D L AU - Carsenty, U AU - Castillo-Rogez, J AU - Christensen, U AU - Gutierrez-Marques, P AU - Hall, I AU - Hoffmann, M AU - Jaumann, R AU - Joy, S AU - Keller, H U AU - Kersten, E AU - Krohn, K AU - Li, J Y AU - Marchi, S AU - Matz, K D AU - McCord, T B AU - McFadden, L A AU - Mengel, K AU - Mertens, V AU - Mottola, S AU - Neumann, W AU - Mastrodemos, N AU - O'Brien, D P AU - Otto, K AU - Pieters, C AU - Pieth, S AU - Polanskey, C AU - Preusker, F AU - Rayman, M D AU - Raymond, C AU - Reddy, V AU - Ripken, J AU - Roatsch, T AU - Russell, C T AU - Schaefer, M AU - Schaefer, T AU - Schenk, P AU - Schmedemann, N AU - Scholten, F AU - Schroeder, S E AU - Schulzeck, F AU - Sierks, H AU - Smith, D AU - Stephan, K AU - Thangjam, G AU - Weiland, M AU - Williams, D AU - Zuber, M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2069 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - imagery KW - Dawn Framing Camera KW - impact features KW - Ceres KW - asteroids KW - cartography KW - altitude KW - resurfacing KW - water vapor KW - relaxation KW - Dawn Mission KW - dwarf planets KW - ice KW - surface features KW - impact craters KW - ground ice KW - orbital observations KW - latitude KW - satellites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832646213?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Dawn+Framing+Camera+clear+filter+imaging+on+Ceres+approach&rft.au=Nathues%2C+A%3BSykes%2C+M+V%3BBuettner%2C+I%3BBuczkowski%2C+D+L%3BCarsenty%2C+U%3BCastillo-Rogez%2C+J%3BChristensen%2C+U%3BGutierrez-Marques%2C+P%3BHall%2C+I%3BHoffmann%2C+M%3BJaumann%2C+R%3BJoy%2C+S%3BKeller%2C+H+U%3BKersten%2C+E%3BKrohn%2C+K%3BLi%2C+J+Y%3BMarchi%2C+S%3BMatz%2C+K+D%3BMcCord%2C+T+B%3BMcFadden%2C+L+A%3BMengel%2C+K%3BMertens%2C+V%3BMottola%2C+S%3BNeumann%2C+W%3BMastrodemos%2C+N%3BO%27Brien%2C+D+P%3BOtto%2C+K%3BPieters%2C+C%3BPieth%2C+S%3BPolanskey%2C+C%3BPreusker%2C+F%3BRayman%2C+M+D%3BRaymond%2C+C%3BReddy%2C+V%3BRipken%2C+J%3BRoatsch%2C+T%3BRussell%2C+C+T%3BSchaefer%2C+M%3BSchaefer%2C+T%3BSchenk%2C+P%3BSchmedemann%2C+N%3BScholten%2C+F%3BSchroeder%2C+S+E%3BSchulzeck%2C+F%3BSierks%2C+H%3BSmith%2C+D%3BStephan%2C+K%3BThangjam%2C+G%3BWeiland%2C+M%3BWilliams%2C+D%3BZuber%2C+M%3BAnonymous&rft.aulast=Nathues&rft.aufirst=A&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2069.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 18 N1 - PubXState - TX N1 - Document feature - illus. N1 - Last updated - 2017-01-24 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - altitude; asteroids; cartography; Ceres; Dawn Framing Camera; Dawn Mission; dwarf planets; ground ice; ice; imagery; impact craters; impact features; latitude; orbital observations; relaxation; resurfacing; satellites; surface features; water vapor ER - TY - JOUR T1 - Genesis solar wind sample 61422; experiment in variation of sequence of cleaning solvent for removing carbon-bearing contamination AN - 1832642771; 724348-43 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Allton, Judith H AU - Kuhlman, K R AU - Allums, K K AU - Gonzalez, C P AU - Jurewicz, A J G AU - Burnett, D S AU - Woolum, D S AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - abstract 1896.pdf PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832642771?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Genesis+solar+wind+sample+61422%3B+experiment+in+variation+of+sequence+of+cleaning+solvent+for+removing+carbon-bearing+contamination&rft.au=Allton%2C+Judith+H%3BKuhlman%2C+K+R%3BAllums%2C+K+K%3BGonzalez%2C+C+P%3BJurewicz%2C+A+J+G%3BBurnett%2C+D+S%3BWoolum%2C+D+S%3BAnonymous&rft.aulast=Allton&rft.aufirst=Judith&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 5 N1 - PubXState - TX N1 - Last updated - 2017-01-24 N1 - CODEN - #02179 ER - TY - JOUR T1 - Genesis solar wind collector cleaning assessment; update on 60336 sample case study AN - 1832642075; 724348-42 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Goreva, Y S AU - Allums, K K AU - Gonzalez, C P AU - Jurewicz, A J AU - Burnett, D S AU - Allton, J H AU - Kuhlman, K R AU - Woolum, D AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - abstract 2333.pdf PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832642075?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Genesis+solar+wind+collector+cleaning+assessment%3B+update+on+60336+sample+case+study&rft.au=Goreva%2C+Y+S%3BAllums%2C+K+K%3BGonzalez%2C+C+P%3BJurewicz%2C+A+J%3BBurnett%2C+D+S%3BAllton%2C+J+H%3BKuhlman%2C+K+R%3BWoolum%2C+D%3BAnonymous&rft.aulast=Goreva&rft.aufirst=Y&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 9 N1 - PubXState - TX N1 - Last updated - 2017-01-24 N1 - CODEN - #02179 ER - TY - JOUR T1 - Improved stratospheric aerosol extinction profiles from SCIAMACHY; validation and sample results AN - 1832640726; 768944-13 AB - Stratospheric aerosol extinction profiles have been retrieved from SCIAMACHY/Envisat measurements of limb-scattered solar radiation. The retrieval is an improved version of an algorithm presented earlier. The retrieved aerosol extinction profiles are compared to co-located aerosol profile measurements from the SAGE II solar occultation instrument at a wavelength of 525 nm. Comparisons were carried out with two versions of the SAGE II data set (version 6.2 and the new version 7.0). In a global average sense the SCIAMACHY and the SAGE II version 7.0 extinction profiles agree to within about 10 % for altitudes above 15 km. Larger relative differences (up to 40 %) are observed at specific latitudes and altitudes. We also find differences between the two SAGE II data versions of up to 40 % for specific latitudes and altitudes, consistent with earlier reports. Sample results on the latitudinal and temporal variability of stratospheric aerosol extinction and optical depth during the SCIAMACHY mission period are presented. The results confirm earlier reports that a series of volcanic eruptions is responsible for the increase in stratospheric aerosol optical depth from 2002 to 2012. Above about an altitude of 28 km, volcanic eruptions are found to have negligible impact in the period 2002-2012. JF - Atmospheric Measurement Techniques (AMT) AU - von Savigny, C AU - Ernst, F AU - Rozanov, A AU - Hommel, R AU - Eichmann, K -U AU - Rozanov, V AU - Burrows, J P AU - Thomason, L W Y1 - 2015 PY - 2015 DA - 2015 SP - 5223 EP - 5235 PB - Copernicus GmbH on behalf of the European Geosciences Union (EGU), Gottingen VL - 8 IS - 12 SN - 1867-1381, 1867-1381 KW - Envisat KW - volcanic rocks KW - igneous rocks KW - altitude KW - data processing KW - stratosphere KW - SCIAMACHY KW - algorithms KW - volcanic ash KW - clouds KW - time series analysis KW - statistical analysis KW - atmosphere KW - satellite methods KW - volcanology KW - measurement KW - wavelength KW - SAGE II KW - pyroclastics KW - optical properties KW - eruptions KW - optical extinction KW - volcanoes KW - aerosols KW - data retrieval KW - temporal distribution KW - latitude KW - optical depth KW - ash clouds KW - instruments KW - backscattering KW - remote sensing KW - 24:Quaternary geology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832640726?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Atmospheric+Measurement+Techniques+%28AMT%29&rft.atitle=Improved+stratospheric+aerosol+extinction+profiles+from+SCIAMACHY%3B+validation+and+sample+results&rft.au=von+Savigny%2C+C%3BErnst%2C+F%3BRozanov%2C+A%3BHommel%2C+R%3BEichmann%2C+K+-U%3BRozanov%2C+V%3BBurrows%2C+J+P%3BThomason%2C+L+W&rft.aulast=von+Savigny&rft.aufirst=C&rft.date=2015-01-01&rft.volume=8&rft.issue=12&rft.spage=5223&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Measurement+Techniques+%28AMT%29&rft.issn=18671381&rft_id=info:doi/ L2 - http://www.atmos-meas-tech.net/8/5223/2015/amt-8-5223-2015.pdf http://www.atmospheric-measurement-techniques.net/ LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data from Copernicus Gesellschaft, Katlenburg-Lindau, Germany N1 - Number of references - 49 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - aerosols; algorithms; altitude; ash clouds; atmosphere; backscattering; clouds; data processing; data retrieval; Envisat; eruptions; igneous rocks; instruments; latitude; measurement; optical depth; optical extinction; optical properties; pyroclastics; remote sensing; SAGE II; satellite methods; SCIAMACHY; statistical analysis; stratosphere; temporal distribution; time series analysis; volcanic ash; volcanic rocks; volcanoes; volcanology; wavelength ER - TY - JOUR T1 - Geologic mapping of Olympus Mons and the Tharsis Montes, Mars AN - 1832639300; 726463-15 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Garry, W B AU - Williams, D A AU - Bleacher, J E AU - Dapremont, A M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1008 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - imagery KW - Tharsis Montes KW - Mars KW - Context Camera KW - volcanic features KW - mosaics KW - HiRISE KW - shield volcanoes KW - Olympus Mons KW - rift aprons KW - lava flows KW - THEMIS KW - cartography KW - surface textures KW - channels KW - High Resolution Stereo Camera KW - glacial features KW - terrestrial planets KW - morphology KW - calderas KW - planets KW - fan-shaped deposits KW - volcanoes KW - MOLA KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832639300?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Geologic+mapping+of+Olympus+Mons+and+the+Tharsis+Montes%2C+Mars&rft.au=Garry%2C+W+B%3BWilliams%2C+D+A%3BBleacher%2C+J+E%3BDapremont%2C+A+M%3BAnonymous&rft.aulast=Garry&rft.aufirst=W&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/1008.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 9 N1 - PubXState - TX N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2017-01-24 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - calderas; cartography; channels; Context Camera; fan-shaped deposits; glacial features; High Resolution Stereo Camera; HiRISE; imagery; lava flows; Mars; MOLA; morphology; mosaics; Olympus Mons; planets; rift aprons; shield volcanoes; surface textures; terrestrial planets; Tharsis Montes; THEMIS; volcanic features; volcanoes ER - TY - JOUR T1 - A study of the King's Bowl phreatic explosion crater as a planetary analog AN - 1832637496; 726463-34 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Sears, D W G AU - Hughes, S S AU - Kobs-Nawotniak, S AU - Borg, C AU - Kim, K J AU - Sears, H AU - Skok, J R AU - Lim, S S AU - Heldmann, J L AU - Haberle, C AU - Downs, M AU - Tornabene, L L AU - Osinski, G R AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1601 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - United States KW - impact features KW - asteroids KW - Mars KW - King's Bowl Crater KW - Europe KW - Craters of the Moon National Monument and Preserve KW - national monuments KW - volcanism KW - Central Europe KW - satellites KW - Deimos Satellite KW - Phobos Satellite KW - Idaho KW - Earth KW - Vesta Asteroid KW - Moon KW - explosions KW - Bavaria Germany KW - pits KW - public lands KW - ejecta KW - terrestrial planets KW - morphology KW - planets KW - volatiles KW - natural analogs KW - Ries Crater KW - impact craters KW - phreatic eruptions KW - Germany KW - fluidization KW - 23:Geomorphology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832637496?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=A+study+of+the+King%27s+Bowl+phreatic+explosion+crater+as+a+planetary+analog&rft.au=Sears%2C+D+W+G%3BHughes%2C+S+S%3BKobs-Nawotniak%2C+S%3BBorg%2C+C%3BKim%2C+K+J%3BSears%2C+H%3BSkok%2C+J+R%3BLim%2C+S+S%3BHeldmann%2C+J+L%3BHaberle%2C+C%3BDowns%2C+M%3BTornabene%2C+L+L%3BOsinski%2C+G+R%3BAnonymous&rft.aulast=Sears&rft.aufirst=D+W&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1601.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 19 N1 - PubXState - TX N1 - Document feature - illus. N1 - Last updated - 2017-01-24 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - asteroids; Bavaria Germany; Central Europe; Craters of the Moon National Monument and Preserve; Deimos Satellite; Earth; ejecta; Europe; explosions; fluidization; Germany; Idaho; impact craters; impact features; King's Bowl Crater; Mars; Moon; morphology; national monuments; natural analogs; Phobos Satellite; phreatic eruptions; pits; planets; public lands; Ries Crater; satellites; terrestrial planets; United States; Vesta Asteroid; volatiles; volcanism ER - TY - JOUR T1 - The mineralogical record of fO (sub 2) variation and alteration in Northwest Africa 8159 (NWA 8159); evidence for the interaction between a mantle derived Martian basalt and a crustal component(s) AN - 1832635071; 724350-41 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Shearer, Charles K AU - Bell, Aaron S AU - Burger, Paul V AU - McCubbin, Francis M AU - Agee, Carl AU - Simon, Justin AU - Papike, James J AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1483 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - silicates KW - Northwest Africa Meteorites KW - alteration KW - stony meteorites KW - oxygen KW - Martian meteorites KW - mantle KW - olivine group KW - Mars KW - fugacity KW - electron probe data KW - XANES spectra KW - meteorites KW - pyroxene group KW - crystal zoning KW - olivine KW - orthosilicates KW - oxides KW - spectra KW - chain silicates KW - oxidation KW - phosphorus KW - electron microscopy data KW - NWA 8159 KW - intergrowths KW - achondrites KW - X-ray spectra KW - TEM data KW - terrestrial planets KW - nesosilicates KW - planets KW - orthopyroxene KW - SEM data KW - crust KW - magnetite KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832635071?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=The+mineralogical+record+of+fO+%28sub+2%29+variation+and+alteration+in+Northwest+Africa+8159+%28NWA+8159%29%3B+evidence+for+the+interaction+between+a+mantle+derived+Martian+basalt+and+a+crustal+component%28s%29&rft.au=Shearer%2C+Charles+K%3BBell%2C+Aaron+S%3BBurger%2C+Paul+V%3BMcCubbin%2C+Francis+M%3BAgee%2C+Carl%3BSimon%2C+Justin%3BPapike%2C+James+J%3BAnonymous&rft.aulast=Shearer&rft.aufirst=Charles&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1483.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 18 N1 - PubXState - TX N1 - Document feature - illus. N1 - Last updated - 2017-01-24 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; alteration; chain silicates; crust; crystal zoning; electron microscopy data; electron probe data; fugacity; intergrowths; magnetite; mantle; Mars; Martian meteorites; meteorites; nesosilicates; Northwest Africa Meteorites; NWA 8159; olivine; olivine group; orthopyroxene; orthosilicates; oxidation; oxides; oxygen; phosphorus; planets; pyroxene group; SEM data; silicates; spectra; stony meteorites; TEM data; terrestrial planets; X-ray spectra; XANES spectra ER - TY - JOUR T1 - The Bagnold Dunes at Gale Crater; a key to reading the geologic record of Mount Sharp AN - 1832628082; 725459-89 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Lapotre, M G A AU - Ehlmann, B L AU - Ayoub, F AU - Minson, S E AU - Bridges, N T AU - Fraeman, A A AU - Arvidson, R E AU - Eigenbrode, J L AU - Ewing, R C AU - Johnson, J R AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1634 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - silicates KW - eolian features KW - dunes KW - olivine group KW - Mars KW - labradorite KW - Gale Crater KW - cross-stratification KW - pyroxene group KW - mineral composition KW - olivine KW - Curiosity Rover KW - orthosilicates KW - sorting KW - HiRISE KW - framework silicates KW - sedimentary structures KW - modal analysis KW - chain silicates KW - plagioclase KW - Bagnold Dunes KW - CRISM KW - Monte Carlo analysis KW - grain size KW - statistical analysis KW - barchans KW - terrestrial planets KW - nesosilicates KW - planets KW - planar bedding structures KW - Mars Science Laboratory KW - longitudinal dunes KW - dune fields KW - Mount Sharp KW - feldspar group KW - Markov chain analysis KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832628082?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=The+Bagnold+Dunes+at+Gale+Crater%3B+a+key+to+reading+the+geologic+record+of+Mount+Sharp&rft.au=Lapotre%2C+M+G+A%3BEhlmann%2C+B+L%3BAyoub%2C+F%3BMinson%2C+S+E%3BBridges%2C+N+T%3BFraeman%2C+A+A%3BArvidson%2C+R+E%3BEigenbrode%2C+J+L%3BEwing%2C+R+C%3BJohnson%2C+J+R%3BAnonymous&rft.aulast=Lapotre&rft.aufirst=M+G&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1634.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 14 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 11, 2016 N1 - Last updated - 2017-01-24 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Bagnold Dunes; barchans; chain silicates; CRISM; cross-stratification; Curiosity Rover; dune fields; dunes; eolian features; feldspar group; framework silicates; Gale Crater; grain size; HiRISE; labradorite; longitudinal dunes; Markov chain analysis; Mars; Mars Science Laboratory; mineral composition; modal analysis; Monte Carlo analysis; Mount Sharp; nesosilicates; olivine; olivine group; orthosilicates; plagioclase; planar bedding structures; planets; pyroxene group; sedimentary structures; silicates; sorting; statistical analysis; terrestrial planets ER - TY - JOUR T1 - Science training history of the Apollo astronauts AN - 1832624686; 774229-1 JF - NASA Special Publication AU - Phinney, William C Y1 - 2015 PY - 2015 DA - 2015 SP - 330 PB - National Aeronautics and Space Administration (NASA), Washington, DC SN - 0565-7075, 0565-7075 KW - impact features KW - field trips KW - Europe KW - Apollo Program KW - New Mexico KW - Florida KW - Alberta KW - California KW - Nevada Test Site KW - sedimentary rocks KW - plutonic rocks KW - Sunset Crater KW - Central Europe KW - Sudbury Ontario KW - Pecos County Texas KW - Meteor Crater KW - Quitman Mountains KW - North America KW - Idaho KW - Honolulu County Hawaii KW - explosions KW - cartography KW - Brewster County Texas KW - Taos County New Mexico KW - Hudspeth County Texas KW - Texas KW - San Juan Mountains KW - East Pacific Ocean Islands KW - Sierra Blanca KW - anorthosite KW - Ontario KW - Craters of the Moon KW - Mexico KW - craters KW - Canada KW - Oceania KW - Orocopia Mountains KW - Colorado KW - field studies KW - United States KW - Sonora Mexico KW - dunes KW - Coconino County Arizona KW - Cape Canaveral KW - igneous rocks KW - Dona Ana County New Mexico KW - photography KW - Mono Craters KW - Pinacate Peaks KW - sampling KW - Brevard County Florida KW - Medicine Hat Alberta KW - Mojave Desert KW - mass movements KW - Capulin Volcano KW - Stillwater Complex KW - Nevada KW - Rio Grande KW - breccia KW - Precambrian KW - Colorado Plateau KW - Moon KW - Mono County California KW - Bavaria Germany KW - geophysical methods KW - Coso Hills KW - Oahu KW - Hawaii KW - U. S. Rocky Mountains KW - canyons KW - landslides KW - lunar samples KW - extraterrestrial geology KW - Big Bend National Park KW - Arizona KW - Ries Crater KW - Apollo 11 KW - volcanoes KW - Sierra Madera KW - Western Canada KW - San Gabriel Mountains KW - Polynesia KW - geomorphology KW - Apollo 12 KW - Kilbourne Hole KW - Germany KW - Eastern Canada KW - Apollo 15 KW - Apollo 14 KW - Rocky Mountains KW - Apollo 17 KW - Ubehebe Craters KW - Apollo 16 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832624686?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=NASA+Special+Publication&rft.atitle=Science+training+history+of+the+Apollo+astronauts&rft.au=Phinney%2C+William+C&rft.aulast=Phinney&rft.aufirst=William&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=NASA+Special+Publication&rft.issn=05657075&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 356 N1 - PubXState - DC N1 - Document feature - illus. incl. 5 tables, charts N1 - Last updated - 2017-01-24 N1 - CODEN - NSSPAW N1 - SubjectsTermNotLitGenreText - Alberta; anorthosite; Apollo 11; Apollo 12; Apollo 14; Apollo 15; Apollo 16; Apollo 17; Apollo Program; Arizona; Bavaria Germany; Big Bend National Park; breccia; Brevard County Florida; Brewster County Texas; California; Canada; canyons; Cape Canaveral; Capulin Volcano; cartography; Central Europe; Coconino County Arizona; Colorado; Colorado Plateau; Coso Hills; craters; Craters of the Moon; Dona Ana County New Mexico; dunes; East Pacific Ocean Islands; Eastern Canada; Europe; explosions; extraterrestrial geology; field studies; field trips; Florida; geomorphology; geophysical methods; Germany; Hawaii; Honolulu County Hawaii; Hudspeth County Texas; Idaho; igneous rocks; impact features; Kilbourne Hole; landslides; lunar samples; mass movements; Medicine Hat Alberta; Meteor Crater; Mexico; Mojave Desert; Mono County California; Mono Craters; Moon; Nevada; Nevada Test Site; New Mexico; North America; Oahu; Oceania; Ontario; Orocopia Mountains; Pecos County Texas; photography; Pinacate Peaks; plutonic rocks; Polynesia; Precambrian; Quitman Mountains; Ries Crater; Rio Grande; Rocky Mountains; sampling; San Gabriel Mountains; San Juan Mountains; sedimentary rocks; Sierra Blanca; Sierra Madera; Sonora Mexico; Stillwater Complex; Sudbury Ontario; Sunset Crater; Taos County New Mexico; Texas; U. S. Rocky Mountains; Ubehebe Craters; United States; volcanoes; Western Canada ER - TY - JOUR T1 - Effect of sulfur concentration and pH conditions on akaganeite formation; understanding akaganeite formation conditions in Yellowknife Bay, Gale Crater, Mars AN - 1832613224; 725459-45 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Fox, A AU - Peretyazhko, T AU - Sutter, B AU - Niles, P AU - Ming, D W AU - Morris, R V AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1199 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - Yellowknife Bay KW - chlorine KW - experimental studies KW - goethite KW - X-ray diffraction data KW - sulfates KW - natrojarosite KW - halogens KW - Mars KW - crystallinity KW - Gale Crater KW - terrestrial planets KW - planets KW - hematite KW - akaganeite KW - precipitation KW - natural analogs KW - sulfur KW - oxides KW - pH KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832613224?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Effect+of+sulfur+concentration+and+pH+conditions+on+akaganeite+formation%3B+understanding+akaganeite+formation+conditions+in+Yellowknife+Bay%2C+Gale+Crater%2C+Mars&rft.au=Fox%2C+A%3BPeretyazhko%2C+T%3BSutter%2C+B%3BNiles%2C+P%3BMing%2C+D+W%3BMorris%2C+R+V%3BAnonymous&rft.aulast=Fox&rft.aufirst=A&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1199.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 10 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on July 28, 2016 N1 - Last updated - 2017-01-24 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - akaganeite; chlorine; crystallinity; experimental studies; Gale Crater; goethite; halogens; hematite; Mars; natrojarosite; natural analogs; oxides; pH; planets; precipitation; sulfates; sulfur; terrestrial planets; X-ray diffraction data; Yellowknife Bay ER - TY - JOUR T1 - Trends in Mars thermospheric density and temperature structure obtained from MAVEN ACC/RW and NGIMS datasets; interpretation using global models AN - 1832613016; 725459-57 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Bougher, S W AU - Tolson, R H AU - Mahaffy, Paul R AU - Johnston, T E AU - Olsen, K AU - Bell, J M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2062 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - NGIMS instrument KW - ionosphere KW - MAVEN Mission KW - density KW - global KW - atmosphere KW - Mars KW - simulation KW - ions KW - temperature KW - terrestrial planets KW - models KW - planets KW - thermosphere KW - atmospheric escape KW - winds KW - Neutral Gas and Ion Mass Spectrometer KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832613016?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Trends+in+Mars+thermospheric+density+and+temperature+structure+obtained+from+MAVEN+ACC%2FRW+and+NGIMS+datasets%3B+interpretation+using+global+models&rft.au=Bougher%2C+S+W%3BTolson%2C+R+H%3BMahaffy%2C+Paul+R%3BJohnston%2C+T+E%3BOlsen%2C+K%3BBell%2C+J+M%3BAnonymous&rft.aulast=Bougher&rft.aufirst=S&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2062.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 1, 2016 N1 - Last updated - 2017-01-24 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - atmosphere; atmospheric escape; density; global; ionosphere; ions; Mars; MAVEN Mission; models; Neutral Gas and Ion Mass Spectrometer; NGIMS instrument; planets; simulation; temperature; terrestrial planets; thermosphere; winds ER - TY - JOUR T1 - The solar energetic particle experiment on MAVEN; first results AN - 1832612895; 725459-3 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Larson, Davin E AU - Lillis, R J AU - Dunn, P A AU - Rahmati, A AU - Cravens, T E AU - Hatch, K AU - Robinson, M AU - Glaser, D AU - Chen, J AU - Curtis, D W AU - Tiu, C AU - Lin, R P AU - Luhman, J G AU - McFadden, J P AU - Connerney, J AU - Halekas, J AU - Jakosky, B M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2890 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - terrestrial planets KW - planets KW - MAVEN Mission KW - oxygen KW - THEMIS KW - solar energetic particles KW - Mars Atmosphere and Volatile Evolution Mission KW - Mars KW - protons KW - atmospheric escape KW - electrons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832612895?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=The+solar+energetic+particle+experiment+on+MAVEN%3B+first+results&rft.au=Larson%2C+Davin+E%3BLillis%2C+R+J%3BDunn%2C+P+A%3BRahmati%2C+A%3BCravens%2C+T+E%3BHatch%2C+K%3BRobinson%2C+M%3BGlaser%2C+D%3BChen%2C+J%3BCurtis%2C+D+W%3BTiu%2C+C%3BLin%2C+R+P%3BLuhman%2C+J+G%3BMcFadden%2C+J+P%3BConnerney%2C+J%3BHalekas%2C+J%3BJakosky%2C+B+M%3BAnonymous&rft.aulast=Larson&rft.aufirst=Davin&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2890.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 1 N1 - PubXState - TX N1 - SuppNotes - Accessed on June 28, 2016 N1 - Last updated - 2017-01-24 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - atmospheric escape; electrons; Mars; Mars Atmosphere and Volatile Evolution Mission; MAVEN Mission; oxygen; planets; protons; solar energetic particles; terrestrial planets; THEMIS ER - TY - JOUR T1 - Early MAVEN results on the Mars upper atmosphere and atmospheric loss to space AN - 1832612158; 725459-1 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Jakosky, B M AU - Lin, R P AU - Grebowsky, J M AU - Luhmann, J G AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1370 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - Siding Spring Comet KW - ionosphere KW - MAVEN Mission KW - solar wind KW - atmosphere KW - Mars KW - carbon dioxide KW - terrestrial planets KW - planets KW - objectives KW - comets KW - spacecraft KW - Mars Atmosphere and Volatile Evolution Mission KW - orbital observations KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832612158?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Early+MAVEN+results+on+the+Mars+upper+atmosphere+and+atmospheric+loss+to+space&rft.au=Jakosky%2C+B+M%3BLin%2C+R+P%3BGrebowsky%2C+J+M%3BLuhmann%2C+J+G%3BAnonymous&rft.aulast=Jakosky&rft.aufirst=B&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1370.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 27, 2016 N1 - Last updated - 2017-01-24 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - atmosphere; carbon dioxide; comets; instruments; ionosphere; Mars; Mars Atmosphere and Volatile Evolution Mission; MAVEN Mission; objectives; orbital observations; planets; Siding Spring Comet; solar wind; spacecraft; terrestrial planets ER - TY - JOUR T1 - Solar EUV irradiance at Mars; why we're measuring it and why you should care AN - 1832611226; 725459-2 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Eparvier, Frank G AU - Thiemann, Ed M B AU - Chamberlin, P C AU - Woods, T N AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 3001 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - terrestrial planets KW - planets KW - MAVEN Mission KW - monitoring KW - electromagnetic radiation KW - extreme ultraviolet radiation KW - solar radiation KW - atmosphere KW - Mars KW - atmospheric escape KW - ultraviolet radiation KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832611226?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Solar+EUV+irradiance+at+Mars%3B+why+we%27re+measuring+it+and+why+you+should+care&rft.au=Eparvier%2C+Frank+G%3BThiemann%2C+Ed+M+B%3BChamberlin%2C+P+C%3BWoods%2C+T+N%3BAnonymous&rft.aulast=Eparvier&rft.aufirst=Frank&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/3001.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - PubXState - TX N1 - SuppNotes - Accessed on June 27, 2016 N1 - Last updated - 2017-01-24 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - atmosphere; atmospheric escape; electromagnetic radiation; extreme ultraviolet radiation; Mars; MAVEN Mission; monitoring; planets; solar radiation; terrestrial planets; ultraviolet radiation ER - TY - JOUR T1 - Characterization of the Martian thermosphere using MAVEN accelerometer and reaction wheel datasets; early mission results AN - 1832605464; 725459-8 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Zurek, R W AU - Tolson, R H AU - Bougher, S W AU - Baird, D AU - Kass, D AU - Smith, M AU - Cantor, B AU - Demcak, S AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2039 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - terrestrial planets KW - planets KW - ionosphere KW - thermosphere KW - MAVEN Mission KW - spacecraft KW - accelerometers KW - atmosphere KW - Mars KW - instruments KW - exosphere KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832605464?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Characterization+of+the+Martian+thermosphere+using+MAVEN+accelerometer+and+reaction+wheel+datasets%3B+early+mission+results&rft.au=Zurek%2C+R+W%3BTolson%2C+R+H%3BBougher%2C+S+W%3BBaird%2C+D%3BKass%2C+D%3BSmith%2C+M%3BCantor%2C+B%3BDemcak%2C+S%3BAnonymous&rft.aulast=Zurek&rft.aufirst=R&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2039.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 4 N1 - PubXState - TX N1 - SuppNotes - Accessed on June 29, 2016 N1 - Last updated - 2017-01-24 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - accelerometers; atmosphere; exosphere; instruments; ionosphere; Mars; MAVEN Mission; planets; spacecraft; terrestrial planets; thermosphere ER - TY - JOUR T1 - MHD model results of solar wind plasma interaction with Mars and comparison with MAVEN observations AN - 1832605246; 725459-59 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Ma, Y J AU - Russell, C T AU - Nagy, A F AU - Toth, G AU - Halekas, J S AU - Connerney, J E P AU - Espley, J R AU - Mahaffy, P R AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1202 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - MAVEN Mission KW - plasma KW - magnetohydrodynamics KW - solar wind KW - Solar Wind Ion Analyzer KW - Mars KW - simulation KW - magnetic field KW - terrestrial planets KW - models KW - planets KW - rotation KW - orbital observations KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832605246?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=MHD+model+results+of+solar+wind+plasma+interaction+with+Mars+and+comparison+with+MAVEN+observations&rft.au=Ma%2C+Y+J%3BRussell%2C+C+T%3BNagy%2C+A+F%3BToth%2C+G%3BHalekas%2C+J+S%3BConnerney%2C+J+E+P%3BEspley%2C+J+R%3BMahaffy%2C+P+R%3BAnonymous&rft.aulast=Ma&rft.aufirst=Y&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1202.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 2 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 2, 2016 N1 - Last updated - 2017-01-24 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - magnetic field; magnetohydrodynamics; Mars; MAVEN Mission; models; orbital observations; planets; plasma; rotation; simulation; solar wind; Solar Wind Ion Analyzer; terrestrial planets ER - TY - JOUR T1 - Comparison of operational satellite SO (sub 2) products with ground-based observations in northern Finland during the Icelandic Holuhraun fissure eruption AN - 1832589056; 758605-4 AB - This paper shows the results of the comparison of satellite SO (sub 2) observations from OMI (Ozone Monitoring Instrument) and OMPS (Ozone Mapping Profiler Suite) with ground-based measurements during the Icelandic Holuhraun fissure eruption in September 2014. The volcanic plume reached Finland on several days during the month of September. The SO (sub 2) total columns from the Brewer direct sun (DS) measurements in Sodankylae (67.42 degrees N, 26.59 degrees E), northern Finland, are compared to the satellite data. The operational satellite SO (sub 2) products are evaluated for high latitude conditions (e.g. large solar zenith angle, SZA). The results show that the best agreement can be found for lowest SZAs, close-to-nadir satellite pixels, cloud fraction below 0.3 and small distance between the station and the centre of the pixel. Under good retrieval conditions, the difference between satellite data and Brewer measurements remains mostly below the uncertainty on the satellite SO (sub 2) retrievals (up to about 2 DU at high latitudes). The satellite products assuming a priori profile with SO (sub 2) predominantly in the planetary boundary layer give total column values with the best agreement with the ground-based data. The analysis of the SO (sub 2) surface concentrations at four air quality stations in northern Finland shows that the volcanic plume coming from Iceland was located very close to the surface. This is connected to the fact that this was a fissure eruption and most of the SO (sub 2) was emitted into the troposphere. This is an exceptional case because the SO (sub 2) volcanic emissions directly affect the air quality levels at surface in an otherwise pristine environment like northern Finland. The time evolution of the SO (sub 2) concentrations peaks during the same days when large SO (sub 2) total column values are measured by the Brewer in Sodankylae and enhanced SO (sub 2) signal is visible over northern Finland from the satellite maps. Thus, the satellite retrievals were able to detect the spatiotemporal evolution of the volcanic plume as compared to the surface observations. Furthermore, direct-broadcast SO (sub 2) satellite data (from both OMI and OMPS instruments) are compared for the first time against ground-based observations. JF - Atmospheric Measurement Techniques (AMT) AU - Ialongo, I AU - Hakkarainen, J AU - Kivi, R AU - Anttila, P AU - Krotkov, N A AU - Yang, K AU - Li, C AU - Tukiainen, S AU - Hassinen, S AU - Tamminen, J Y1 - 2015 PY - 2015 DA - 2015 SP - 2279 EP - 2289 PB - Copernicus GmbH on behalf of the European Geosciences Union (EGU), Gottingen VL - 8 IS - 6 SN - 1867-1381, 1867-1381 KW - Ozone Monitoring Instrument KW - plumes KW - altitude KW - northern Finland KW - data processing KW - Europe KW - environmental analysis KW - volcanic features KW - volcanism KW - Sodankyla Finland KW - Ozone Mapping Profiler Suite KW - algorithms KW - uncertainty KW - degassing KW - boundary layer KW - clouds KW - sulfur dioxide KW - concentration KW - monitoring KW - Western Europe KW - principal components analysis KW - Finland KW - ground methods KW - fissures KW - statistical analysis KW - Holuhraun KW - atmosphere KW - Lapland Finland KW - satellite methods KW - measurement KW - Lapland KW - gases KW - Scandinavia KW - eruptions KW - volcanoes KW - data retrieval KW - Iceland KW - OMPS KW - lava fields KW - instruments KW - remote sensing KW - OMI KW - 22:Environmental geology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832589056?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Atmospheric+Measurement+Techniques+%28AMT%29&rft.atitle=Comparison+of+operational+satellite+SO+%28sub+2%29+products+with+ground-based+observations+in+northern+Finland+during+the+Icelandic+Holuhraun+fissure+eruption&rft.au=Ialongo%2C+I%3BHakkarainen%2C+J%3BKivi%2C+R%3BAnttila%2C+P%3BKrotkov%2C+N+A%3BYang%2C+K%3BLi%2C+C%3BTukiainen%2C+S%3BHassinen%2C+S%3BTamminen%2C+J&rft.aulast=Ialongo&rft.aufirst=I&rft.date=2015-01-01&rft.volume=8&rft.issue=6&rft.spage=2279&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Measurement+Techniques+%28AMT%29&rft.issn=18671381&rft_id=info:doi/ L2 - http://www.atmos-meas-tech.net/8/2279/2015/amt-8-2279-2015.pdf http://www.atmospheric-measurement-techniques.net/ LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data from Copernicus Gesellschaft, Katlenburg-Lindau, Germany N1 - Number of references - 29 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - algorithms; altitude; atmosphere; boundary layer; clouds; concentration; data processing; data retrieval; degassing; environmental analysis; eruptions; Europe; Finland; fissures; gases; ground methods; Holuhraun; Iceland; instruments; Lapland; Lapland Finland; lava fields; measurement; monitoring; northern Finland; OMI; OMPS; Ozone Mapping Profiler Suite; Ozone Monitoring Instrument; plumes; principal components analysis; remote sensing; satellite methods; Scandinavia; Sodankyla Finland; statistical analysis; sulfur dioxide; uncertainty; volcanic features; volcanism; volcanoes; Western Europe ER - TY - JOUR T1 - Middle East versus Saharan dust extinction-to-backscatter ratios AN - 1832588045; 758544-35 AB - Four years (2010-2013) of observations with polarization lidar and sun/sky photometer at the combined European Aerosol Research Lidar Network (EARLINET) and Aerosol Robotic Network (AERONET) site of Limassol (34.7 degrees N, 33 degrees E), Cyprus, were used to compare extinction-to-backscatter ratios (lidar ratios) for desert dust from Middle East deserts and the Sahara. In an earlier article, we analyzed one case only and found comparably low lidar ratios (sub 40 sr for Middle East dust. The complex data analysis scheme is presented. The quality of the retrieval is checked within a case study by comparing the results with respective Raman lidar solutions for particle backscatter, extinction, and lidar ratio. The applied combined lidar/photometer retrievals corroborate recent findings regarding the difference between Middle East and Saharan dust lidar ratios. We found values from 43-65 sr with a mean (+ or -standard deviation) of 53 + or - 6 sr for Saharan dust and from 33-48 sr with a mean of 41 + or - 4 sr for Middle East dust for the wavelength of 532 nm. The presented data analysis, however, also demonstrates the difficulties in identifying the optical properties of dust even during outbreak situations in the presence of complex aerosol mixtures of desert dust, marine particles, fire smoke, and anthropogenic haze. JF - Atmospheric Chemistry and Physics AU - Nisantzi, A AU - Mamouri, R E AU - Ansmann, A AU - Schuster, G L AU - Hadjimitsis, D G Y1 - 2015 PY - 2015 DA - 2015 SP - 7071 EP - 7084 PB - Copernicus, Katlenburg-Lindau VL - 15 IS - 12 SN - 1680-7316, 1680-7316 KW - Limassol Cyprus KW - polarization KW - lidar ratios KW - laser methods KW - optical dispersion KW - data processing KW - deserts KW - observations KW - photometry KW - HYSPLIT KW - sediments KW - Cyprus KW - CALIOP KW - spectra KW - Asia KW - AERONET KW - uncertainty KW - Middle East KW - dust storms KW - EARLINET KW - clastic sediments KW - statistical analysis KW - atmosphere KW - satellite methods KW - measurement KW - case studies KW - Raman spectra KW - optical properties KW - lidar methods KW - optical extinction KW - dust KW - Africa KW - aerosols KW - Sahara KW - data retrieval KW - particles KW - instruments KW - backscattering KW - remote sensing KW - 06A:Sedimentary petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832588045?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Atmospheric+Chemistry+and+Physics&rft.atitle=Middle+East+versus+Saharan+dust+extinction-to-backscatter+ratios&rft.au=Nisantzi%2C+A%3BMamouri%2C+R+E%3BAnsmann%2C+A%3BSchuster%2C+G+L%3BHadjimitsis%2C+D+G&rft.aulast=Nisantzi&rft.aufirst=A&rft.date=2015-01-01&rft.volume=15&rft.issue=12&rft.spage=7071&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Chemistry+and+Physics&rft.issn=16807316&rft_id=info:doi/ L2 - http://www.atmos-chem-phys.net/15/7071/2015/acp-15-7071-2015.pdf http://www.atmospheric-chemistry-and-physics.net/home.html LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data from Copernicus Gesellschaft, Katlenburg-Lindau, Germany N1 - Number of references - 45 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - AERONET; aerosols; Africa; Asia; atmosphere; backscattering; CALIOP; case studies; clastic sediments; Cyprus; data processing; data retrieval; deserts; dust; dust storms; EARLINET; HYSPLIT; instruments; laser methods; lidar methods; lidar ratios; Limassol Cyprus; measurement; Middle East; observations; optical dispersion; optical extinction; optical properties; particles; photometry; polarization; Raman spectra; remote sensing; Sahara; satellite methods; sediments; spectra; statistical analysis; uncertainty ER - TY - JOUR T1 - Uncertainties in isoprene photochemistry and emissions; implications for the oxidative capacity of past and present atmospheres and for climate forcing agents AN - 1832588015; 758546-15 AB - Isoprene and its oxidation products are major players in the oxidative chemistry of the troposphere. Current understanding of the factors controlling biogenic isoprene emissions and of the fate of isoprene oxidation products in the atmosphere has been evolving rapidly. We use a climate-biosphere-chemistry modeling framework to evaluate the sensitivity of estimates of the tropospheric oxidative capacity to uncertainties in isoprene emissions and photochemistry. Our work focuses on two climate transitions: from the Last Glacial Maximum (LGM, 19 000-23 000 years BP) to the preindustrial (1770s) and from the preindustrial to the present day (1990s). We find that different oxidants have different sensitivities to the uncertainties tested in this study. Ozone is relatively insensitive, whereas OH is the most sensitive: changes in the global mean OH levels for the LGM-to-preindustrial transition range between -29 and +7 % and those for the preindustrial-to-present-day transition range between -8 and +17 % across our simulations. We find little variability in the implied relative LGM-preindustrial difference in methane emissions with respect to the uncertainties tested in this study. Conversely, estimates of the preindustrial-to-present-day and LGM-to-preindustrial changes in the global burden of secondary organic aerosol (SOA) are highly sensitive. We show that the linear relationship between tropospheric mean OH and tropospheric mean ozone photolysis rates, water vapor, and total emissions of NO (sub x) and reactive carbon - first reported in Murray et al. (2014) - does not hold across all periods with the new isoprene photochemistry mechanism. This study demonstrates how inadequacies in our current understanding of isoprene emissions and photochemistry impede our ability to constrain the oxidative capacities of the present and past atmospheres, its controlling factors, and the radiative forcing of some short-lived species such as SOA over time. JF - Atmospheric Chemistry and Physics AU - Achakulwisut, P AU - Mickley, L J AU - Murray, L T AU - Tai, A P K AU - Kaplan, J O AU - Alexander, B Y1 - 2015 PY - 2015 DA - 2015 SP - 7977 EP - 7998 PB - Copernicus, Katlenburg-Lindau VL - 15 IS - 14 SN - 1680-7316, 1680-7316 KW - last glacial maximum KW - aliphatic hydrocarbons KW - solar forcing KW - mechanism KW - water vapor KW - global change KW - bioavailability KW - troposphere KW - vegetation KW - simulation KW - Holocene KW - observations KW - carbon dioxide KW - modern KW - Cenozoic KW - controls KW - ozone KW - isoprenoids KW - sensitivity analysis KW - climate forcing KW - chemical composition KW - geochemistry KW - uncertainty KW - climate KW - concentration KW - methane KW - Quaternary KW - biochemistry KW - paleoatmosphere KW - oxidation KW - photochemistry KW - atmosphere KW - alkanes KW - hydroxyl ion KW - volatiles KW - organic compounds KW - biogenic processes KW - photolysis KW - biosphere KW - volatile organic compounds KW - hydrogen peroxide KW - hydrocarbons KW - aerosols KW - Pre-Industrial Age KW - ICECAP model KW - upper Holocene KW - 24:Quaternary geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832588015?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Atmospheric+Chemistry+and+Physics&rft.atitle=Uncertainties+in+isoprene+photochemistry+and+emissions%3B+implications+for+the+oxidative+capacity+of+past+and+present+atmospheres+and+for+climate+forcing+agents&rft.au=Achakulwisut%2C+P%3BMickley%2C+L+J%3BMurray%2C+L+T%3BTai%2C+A+P+K%3BKaplan%2C+J+O%3BAlexander%2C+B&rft.aulast=Achakulwisut&rft.aufirst=P&rft.date=2015-01-01&rft.volume=15&rft.issue=14&rft.spage=7977&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Chemistry+and+Physics&rft.issn=16807316&rft_id=info:doi/ L2 - http://www.atmos-chem-phys.net/15/7977/2015/acp-15-7977-2015.pdf http://www.atmospheric-chemistry-and-physics.net/home.html LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data from Copernicus Gesellschaft, Katlenburg-Lindau, Germany N1 - Number of references - 107 N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - aerosols; aliphatic hydrocarbons; alkanes; atmosphere; bioavailability; biochemistry; biogenic processes; biosphere; carbon dioxide; Cenozoic; chemical composition; climate; climate forcing; concentration; controls; geochemistry; global change; Holocene; hydrocarbons; hydrogen peroxide; hydroxyl ion; ICECAP model; isoprenoids; last glacial maximum; mechanism; methane; modern; observations; organic compounds; oxidation; ozone; paleoatmosphere; photochemistry; photolysis; Pre-Industrial Age; Quaternary; sensitivity analysis; simulation; solar forcing; troposphere; uncertainty; upper Holocene; vegetation; volatile organic compounds; volatiles; water vapor ER - TY - JOUR T1 - The thermal conductivity of soils with bimodal grain-sizes at Mars pressures AN - 1828846546; 2016-085644 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Mellon, Michael T AU - McKay, Christopher P AU - Grant, John A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2837 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - dunes KW - terrestrial environment KW - thermal conductivity KW - Mars KW - coarse-grained materials KW - heat flow KW - sediments KW - sorting KW - Wright Valley KW - bimodal distribution KW - soils KW - surface properties KW - sand KW - clastic sediments KW - grain size KW - thermal properties KW - bedforms KW - terrestrial planets KW - planets KW - Antarctica KW - natural analogs KW - dust KW - McMurdo dry valleys KW - Victoria Land KW - atmospheric pressure KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1828846546?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=The+thermal+conductivity+of+soils+with+bimodal+grain-sizes+at+Mars+pressures&rft.au=Mellon%2C+Michael+T%3BMcKay%2C+Christopher+P%3BGrant%2C+John+A%3BAnonymous&rft.aulast=Mellon&rft.aufirst=Michael&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2837.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 12 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Feb. 3, 2016 N1 - Last updated - 2016-10-25 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Antarctica; atmospheric pressure; bedforms; bimodal distribution; clastic sediments; coarse-grained materials; dunes; dust; grain size; heat flow; Mars; McMurdo dry valleys; natural analogs; planets; remote sensing; sand; sediments; soils; sorting; surface properties; terrestrial environment; terrestrial planets; thermal conductivity; thermal properties; Victoria Land; Wright Valley ER - TY - JOUR T1 - Broadband permittivity measurements on porous planetary soil simulants, in relation with the Rosetta Mission AN - 1828846500; 2016-085737 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Brouet, Yann AU - Levasseur-Regourd, A C AU - Encrenaz, Pierre AU - Sabouroux, P AU - Heggy, E AU - Kofman, W AU - Thomas, N AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1809 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - soils KW - experimental studies KW - bulk density KW - statistical analysis KW - standard deviation KW - porous materials KW - simulation KW - dielectric constant KW - MIRO KW - temperature KW - size KW - laboratory studies KW - Rosetta Mission KW - granular materials KW - comets KW - radiometers KW - natural analogs KW - Microwave Instrument for the Rosetta Orbiter KW - Churyumov-Gerasimenko Comet KW - cometary dust KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1828846500?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Broadband+permittivity+measurements+on+porous+planetary+soil+simulants%2C+in+relation+with+the+Rosetta+Mission&rft.au=Brouet%2C+Yann%3BLevasseur-Regourd%2C+A+C%3BEncrenaz%2C+Pierre%3BSabouroux%2C+P%3BHeggy%2C+E%3BKofman%2C+W%3BThomas%2C+N%3BAnonymous&rft.aulast=Brouet&rft.aufirst=Yann&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1809.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 10 N1 - PubXState - TX N1 - Document feature - illus. incl. 2 tables N1 - SuppNotes - Accessed on March 15, 2016 N1 - Last updated - 2016-10-25 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - bulk density; Churyumov-Gerasimenko Comet; cometary dust; comets; dielectric constant; experimental studies; granular materials; laboratory studies; Microwave Instrument for the Rosetta Orbiter; MIRO; natural analogs; porous materials; radiometers; Rosetta Mission; simulation; size; soils; standard deviation; statistical analysis; temperature ER - TY - JOUR T1 - Rosetta Mission status update AN - 1828846394; 2016-085732 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Taylor, M G G T AU - Altobelli, N AU - Alexander, C AU - Jansen, F AU - Barthelemy, M AU - Geiger, B AU - Kueppers, M AU - Moissl, R AU - O'Rourke, L AU - Vallat, C AU - Lodiot, S AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1985 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - Rosetta Mission KW - comets KW - Philae Lander KW - in situ KW - mapping KW - Churyumov-Gerasimenko Comet KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1828846394?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Rosetta+Mission+status+update&rft.au=Taylor%2C+M+G+G+T%3BAltobelli%2C+N%3BAlexander%2C+C%3BJansen%2C+F%3BBarthelemy%2C+M%3BGeiger%2C+B%3BKueppers%2C+M%3BMoissl%2C+R%3BO%27Rourke%2C+L%3BVallat%2C+C%3BLodiot%2C+S%3BAnonymous&rft.aulast=Taylor&rft.aufirst=M+G+G&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1985.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - PubXState - TX N1 - SuppNotes - Accessed on March 11, 2016 N1 - Last updated - 2016-10-25 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Churyumov-Gerasimenko Comet; comets; in situ; mapping; Philae Lander; remote sensing; Rosetta Mission ER - TY - JOUR T1 - Surface temperature of dwarf plant Ceres; preliminary results from Dawn AN - 1828845945; 2016-085710 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Tosi, Federico AU - Capria, M T AU - De Sanctis, M C AU - Ammannito, E AU - Capaccioni, F AU - Zambon, F AU - Raponi, A AU - Russell, C T AU - Raymond, C A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1745 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - surface properties KW - hyperspectral analysis KW - Ceres KW - asteroids KW - optical spectra KW - thermal properties KW - Dawn Mission KW - dwarf planets KW - temperature KW - infrared spectra KW - thermal emission KW - ground-surface temperature KW - spectra KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1828845945?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Surface+temperature+of+dwarf+plant+Ceres%3B+preliminary+results+from+Dawn&rft.au=Tosi%2C+Federico%3BCapria%2C+M+T%3BDe+Sanctis%2C+M+C%3BAmmannito%2C+E%3BCapaccioni%2C+F%3BZambon%2C+F%3BRaponi%2C+A%3BRussell%2C+C+T%3BRaymond%2C+C+A%3BAnonymous&rft.aulast=Tosi&rft.aufirst=Federico&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1745.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 8 N1 - PubXState - TX N1 - SuppNotes - Accessed on March 3, 2016 N1 - Last updated - 2016-10-25 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - asteroids; Ceres; Dawn Mission; dwarf planets; ground-surface temperature; hyperspectral analysis; infrared spectra; optical spectra; spectra; surface properties; temperature; thermal emission; thermal properties ER - TY - RPRT T1 - NASA Education Implementation Plan 2015-2017 AN - 1826517295; ED563891 AB - The NASA Education Implementation Plan (NEIP) provides an understanding of the role of NASA in advancing the nation's STEM education and workforce pipeline. The document outlines the roles and responsibilities that NASA Education has in approaching and achieving the agency's and administration's strategic goals in STEM Education. The specific purpose of the 2015-2017 NASA Education Implementation Plan is to present and describe the following: (1) The alignment of NASA Education with national priorities and the 2014 NASA Strategic Plan; (2) The framework for specific and measurable outcomes to guide and monitor performance within the education portfolio; (3) The roles, responsibilities and management of the Associate Administrator for Education, the Office of Education, Mission Directorate Leads, and Education Offices; (4) The key agency stakeholders responsible for strategic coordination and requirements development; and (5) The monitoring and control structure for determining the outcomes of NASA's education portfolio across the agency. In addition, this document describes the processes and principles of strategic planning and management for all of NASA's education efforts. It also explains how NASA Education is governed and managed and what internal and external requirements drive this strategy. The following are appended: (1) References; and (2) Glossary of Terms and Acronyms. Y1 - 2015 PY - 2015 DA - 2015 SP - 56 PB - National Aeronautics and Space Administration. Public Communications and Inquiries Management Office, NASA Headquarters Suite 1M32, Washington, DC 20546-0001. KW - ERIC, Resources in Education (RIE) KW - Performance Based Assessment KW - Progress Monitoring KW - Stakeholders KW - Administrator Role KW - Educational Objectives KW - STEM Education KW - Success KW - Accountability KW - Portfolios (Background Materials) KW - Partnerships in Education KW - Public Agencies KW - Planning KW - Agency Role KW - Alignment (Education) KW - Program Evaluation KW - Strategic Planning UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1826517295?accountid=14244 LA - English DB - ERIC N1 - Last updated - 2017-01-13 ER - TY - JOUR T1 - Crystal-chemical analysis of Martian minerals in Gale Crater AN - 1824217231; 2016-084269 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Morrison, S M AU - Downs, R T AU - Blake, D F AU - Bish, D L AU - Morris, R V AU - Vaniman, D T AU - Rampe, Elizabeth B AU - Achilles, C N AU - Ming, D W AU - Chipera, S J AU - Treiman, A H AU - Gellert, R AU - Bristow, T F AU - Crisp, J A AU - Morookian, J M AU - Sarrazin, P C AU - Farmer, J D AU - Yen, A S AU - Des Marais, D J AU - Grotzinger, John P AU - Stolper, E M AU - Wilson, M A AU - Spanovich, N AU - Anderson, R C AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2506 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - silicates KW - pigeonite KW - refinement KW - X-ray diffraction data KW - augite KW - substitution KW - olivine group KW - Mars KW - Gale Crater KW - pyroxene group KW - clinopyroxene KW - alpha-particle X-ray spectra KW - olivine KW - Curiosity Rover KW - CheMin instrument KW - orthosilicates KW - framework silicates KW - chemical composition KW - chain silicates KW - Yellowknife Bay KW - cell dimensions KW - plagioclase KW - Rocknest KW - terrestrial planets KW - nesosilicates KW - planets KW - X-ray data KW - Mars Science Laboratory KW - crystal chemistry KW - feldspar group KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824217231?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Crystal-chemical+analysis+of+Martian+minerals+in+Gale+Crater&rft.au=Morrison%2C+S+M%3BDowns%2C+R+T%3BBlake%2C+D+F%3BBish%2C+D+L%3BMorris%2C+R+V%3BVaniman%2C+D+T%3BRampe%2C+Elizabeth+B%3BAchilles%2C+C+N%3BMing%2C+D+W%3BChipera%2C+S+J%3BTreiman%2C+A+H%3BGellert%2C+R%3BBristow%2C+T+F%3BCrisp%2C+J+A%3BMorookian%2C+J+M%3BSarrazin%2C+P+C%3BFarmer%2C+J+D%3BYen%2C+A+S%3BDes+Marais%2C+D+J%3BGrotzinger%2C+John+P%3BStolper%2C+E+M%3BWilson%2C+M+A%3BSpanovich%2C+N%3BAnderson%2C+R+C%3BAnonymous&rft.aulast=Morrison&rft.aufirst=S&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2506.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on March 17, 2016 N1 - Last updated - 2016-09-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alpha-particle X-ray spectra; augite; cell dimensions; chain silicates; chemical composition; CheMin instrument; clinopyroxene; crystal chemistry; Curiosity Rover; feldspar group; framework silicates; Gale Crater; Mars; Mars Science Laboratory; nesosilicates; olivine; olivine group; orthosilicates; pigeonite; plagioclase; planets; pyroxene group; refinement; Rocknest; silicates; substitution; terrestrial planets; X-ray data; X-ray diffraction data; Yellowknife Bay ER - TY - JOUR T1 - Thermal conductivity of the near-surface Martian regolith derived from variations in MSL passive neutron counts and ground temperature measurements AN - 1824216307; 2016-084265 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Tate, C G AU - Moersch, J AU - Jun, I AU - Hardgrove, C AU - Mischna, M AU - Litvak, M L AU - Varenikov, A AU - Mitrofanov, I G AU - Boynton, W V AU - Deflores, L AU - Drake, D AU - Fedosov, F AU - Golovin, D AU - Harshman, K AU - Kozyrev, A S AU - Lisov, D AU - Malakhov, A AU - Milliken, R E AU - Mokrousov, M AU - Nikiforov, S AU - Sanin, A B AU - Starr, R AU - Vostrukhin, A AU - Martin-Torres, F J AU - Zorzano, Maria-Paz AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2145 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - passive methods KW - thermal conductivity KW - subsurface temperature KW - Dynamic Albedo of Neutrons experiment KW - Mars KW - simulation KW - temperature KW - terrestrial planets KW - planets KW - neutrons KW - neutron probe KW - hydrogen KW - heat flow KW - Fourier analysis KW - Mars Science Laboratory KW - atmospheric pressure KW - ground-surface temperature KW - diurnal variations KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824216307?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Thermal+conductivity+of+the+near-surface+Martian+regolith+derived+from+variations+in+MSL+passive+neutron+counts+and+ground+temperature+measurements&rft.au=Tate%2C+C+G%3BMoersch%2C+J%3BJun%2C+I%3BHardgrove%2C+C%3BMischna%2C+M%3BLitvak%2C+M+L%3BVarenikov%2C+A%3BMitrofanov%2C+I+G%3BBoynton%2C+W+V%3BDeflores%2C+L%3BDrake%2C+D%3BFedosov%2C+F%3BGolovin%2C+D%3BHarshman%2C+K%3BKozyrev%2C+A+S%3BLisov%2C+D%3BMalakhov%2C+A%3BMilliken%2C+R+E%3BMokrousov%2C+M%3BNikiforov%2C+S%3BSanin%2C+A+B%3BStarr%2C+R%3BVostrukhin%2C+A%3BMartin-Torres%2C+F+J%3BZorzano%2C+Maria-Paz%3BAnonymous&rft.aulast=Tate&rft.aufirst=C&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2145.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 11 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on March 17, 2016 N1 - Last updated - 2016-09-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - atmospheric pressure; diurnal variations; Dynamic Albedo of Neutrons experiment; Fourier analysis; ground-surface temperature; heat flow; hydrogen; Mars; Mars Science Laboratory; neutron probe; neutrons; passive methods; planets; regolith; simulation; subsurface temperature; temperature; terrestrial planets; thermal conductivity ER - TY - JOUR T1 - Noble gas fractionation during low temperature alteration; an experimental approach AN - 1824216263; 2016-084306 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Bullock, M A AU - Schwenzer, Susanne P AU - Bridges, J C AU - Chavez, C AU - Filiberto, J AU - Kelley, S P AU - Miller, M AU - Moore, J M AU - Smith, H AU - Swindle, T D AU - Treiman, A H AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1235 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - alteration KW - nakhlite KW - stony meteorites KW - Martian meteorites KW - Mars KW - authigenic minerals KW - simulation KW - temperature KW - Gale Crater KW - carbon dioxide KW - SNC Meteorites KW - meteorites KW - mineral composition KW - noble gases KW - experimental studies KW - xenon KW - krypton KW - achondrites KW - argon KW - terrestrial planets KW - models KW - planets KW - K/Ar KW - low temperature KW - chemical fractionation KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824216263?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Noble+gas+fractionation+during+low+temperature+alteration%3B+an+experimental+approach&rft.au=Bullock%2C+M+A%3BSchwenzer%2C+Susanne+P%3BBridges%2C+J+C%3BChavez%2C+C%3BFiliberto%2C+J%3BKelley%2C+S+P%3BMiller%2C+M%3BMoore%2C+J+M%3BSmith%2C+H%3BSwindle%2C+T+D%3BTreiman%2C+A+H%3BAnonymous&rft.aulast=Bullock&rft.aufirst=M&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1235.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 36 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on March 29, 2016 N1 - Last updated - 2016-09-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; alteration; argon; authigenic minerals; carbon dioxide; chemical fractionation; experimental studies; Gale Crater; K/Ar; krypton; low temperature; Mars; Martian meteorites; meteorites; mineral composition; models; nakhlite; noble gases; planets; simulation; SNC Meteorites; stony meteorites; temperature; terrestrial planets; xenon ER - TY - JOUR T1 - Petrology of two Itokawa particles; comparison with equilibrated LL chondrites AN - 1824216255; 2016-084346 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Komatsu, Mutsumi AU - Mikouchi, T AU - Arai, T AU - Fagan, T J AU - Zolensky, M AU - Hagiya, K AU - Ohsumi, K AU - Karouji, Y AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1884 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - silicates KW - ordinary chondrites KW - equilibrated ordinary chondrites KW - stony meteorites KW - asteroids KW - olivine group KW - electron probe data KW - meteorites KW - pyroxene group KW - olivine KW - orthosilicates KW - oxides KW - framework silicates KW - chondrites KW - chain silicates KW - plagioclase KW - Itokawa Asteroid KW - LL chondrites KW - chromite KW - electron microscopy data KW - metamorphism KW - TEM data KW - nesosilicates KW - S-type asteroids KW - petrography KW - feldspar group KW - shock metamorphism KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824216255?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Petrology+of+two+Itokawa+particles%3B+comparison+with+equilibrated+LL+chondrites&rft.au=Komatsu%2C+Mutsumi%3BMikouchi%2C+T%3BArai%2C+T%3BFagan%2C+T+J%3BZolensky%2C+M%3BHagiya%2C+K%3BOhsumi%2C+K%3BKarouji%2C+Y%3BAnonymous&rft.aulast=Komatsu&rft.aufirst=Mutsumi&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1884.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 11 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on April 11, 2016 N1 - Last updated - 2016-09-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - asteroids; chain silicates; chondrites; chromite; electron microscopy data; electron probe data; equilibrated ordinary chondrites; feldspar group; framework silicates; Itokawa Asteroid; LL chondrites; metamorphism; meteorites; nesosilicates; olivine; olivine group; ordinary chondrites; orthosilicates; oxides; petrography; plagioclase; pyroxene group; S-type asteroids; shock metamorphism; silicates; stony meteorites; TEM data ER - TY - JOUR T1 - Impact-induced clay mineral formation and distribution on Mars AN - 1824216206; 2016-084324 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Rivera-Valentin, E G AU - Craig, P I AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2554 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - silicates KW - numerical models KW - Noachian KW - impact features KW - Monte Carlo analysis KW - statistical analysis KW - Mars KW - impacts KW - distribution KW - melts KW - size KW - hydrothermal conditions KW - clay minerals KW - terrestrial planets KW - planets KW - impact melts KW - sheet silicates KW - impact craters KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824216206?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Impact-induced+clay+mineral+formation+and+distribution+on+Mars&rft.au=Rivera-Valentin%2C+E+G%3BCraig%2C+P+I%3BAnonymous&rft.aulast=Rivera-Valentin&rft.aufirst=E&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2554.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 22 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on April 1, 2016 N1 - Last updated - 2016-09-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - clay minerals; distribution; hydrothermal conditions; impact craters; impact features; impact melts; impacts; Mars; melts; Monte Carlo analysis; Noachian; numerical models; planets; sheet silicates; silicates; size; statistical analysis; terrestrial planets ER - TY - JOUR T1 - Diagenetic features analyzed by ChemCam/Curiosity at Pahrump Hills, Gale Crater, Mars AN - 1824216177; 2016-084262 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Nachon, Marion AU - Mangold, N AU - Cousin, Agnes AU - Forni, O AU - Anderson, R B AU - Blank, J G AU - Calef, F AU - Clegg, S M AU - Fabre, C AU - Fisk, M AU - Gasnault, O AU - Kah, L C AU - Kronyak, R AU - Lasue, Jeremie AU - Meslin, P Y AU - Le Mouelic, S AU - Maurice, Sylvestre AU - Oehler, D Z AU - Payre, V AU - Rapin, W AU - Sumner, D AU - Stack, K AU - Schroeder, S AU - Wiens, Roger C AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1524 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - ChemCam instrument KW - alkaline earth metals KW - magnesium KW - secondary structures KW - sulfates KW - Mars KW - veins KW - Pahrump Hills KW - Gale Crater KW - emission spectra KW - terrestrial planets KW - planets KW - concretions KW - metals KW - diagenesis KW - Curiosity Rover KW - nickel KW - Mars Science Laboratory KW - sulfur KW - LIBS spectra KW - spectra KW - sedimentary structures KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824216177?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Diagenetic+features+analyzed+by+ChemCam%2FCuriosity+at+Pahrump+Hills%2C+Gale+Crater%2C+Mars&rft.au=Nachon%2C+Marion%3BMangold%2C+N%3BCousin%2C+Agnes%3BForni%2C+O%3BAnderson%2C+R+B%3BBlank%2C+J+G%3BCalef%2C+F%3BClegg%2C+S+M%3BFabre%2C+C%3BFisk%2C+M%3BGasnault%2C+O%3BKah%2C+L+C%3BKronyak%2C+R%3BLasue%2C+Jeremie%3BMeslin%2C+P+Y%3BLe+Mouelic%2C+S%3BMaurice%2C+Sylvestre%3BOehler%2C+D+Z%3BPayre%2C+V%3BRapin%2C+W%3BSumner%2C+D%3BStack%2C+K%3BSchroeder%2C+S%3BWiens%2C+Roger+C%3BAnonymous&rft.aulast=Nachon&rft.aufirst=Marion&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1524.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 10 N1 - PubXState - TX N1 - Document feature - illus. incl. sketch map N1 - SuppNotes - Accessed on March 16, 2016 N1 - Last updated - 2016-09-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alkaline earth metals; ChemCam instrument; concretions; Curiosity Rover; diagenesis; emission spectra; Gale Crater; LIBS spectra; magnesium; Mars; Mars Science Laboratory; metals; nickel; Pahrump Hills; planets; secondary structures; sedimentary structures; spectra; sulfates; sulfur; terrestrial planets; veins ER - TY - JOUR T1 - Estimation of ionospheric plasma content inside Martian magnetic flux ropes based on MAVEN observation AN - 1824215034; 2016-081975 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Hara, T AU - Mitchell, D L AU - McFadden, J P AU - Halekas, J S AU - Espley, J R AU - Connerney, J E P AU - DiBraccio, G A AU - Andersson, L AU - Brain, D A AU - Seki, Kanako AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1773 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - ionosphere KW - MAVEN Mission KW - magnetic flux KW - plasma KW - oxygen KW - Grad-Shafranov methods KW - Mars KW - ions KW - magnetic field KW - terrestrial planets KW - planets KW - Mars Global Surveyor Program KW - reconstruction KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824215034?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Estimation+of+ionospheric+plasma+content+inside+Martian+magnetic+flux+ropes+based+on+MAVEN+observation&rft.au=Hara%2C+T%3BMitchell%2C+D+L%3BMcFadden%2C+J+P%3BHalekas%2C+J+S%3BEspley%2C+J+R%3BConnerney%2C+J+E+P%3BDiBraccio%2C+G+A%3BAndersson%2C+L%3BBrain%2C+D+A%3BSeki%2C+Kanako%3BAnonymous&rft.aulast=Hara&rft.aufirst=T&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1773.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Feb. 2, 2016 N1 - Last updated - 2016-09-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Grad-Shafranov methods; ionosphere; ions; magnetic field; magnetic flux; Mars; Mars Global Surveyor Program; MAVEN Mission; oxygen; planets; plasma; reconstruction; terrestrial planets ER - TY - JOUR T1 - Reduction and post-processing of early data from MAVEN's Neutral Gas and Ion Mass Spectrometer (NGIMS) AN - 1824214704; 2016-081989 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Elrod, Meredith K AU - Mahaffy, Paul R AU - Benna, M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2661 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - ionosphere KW - MAVEN Mission KW - oxygen KW - data acquisition KW - altitude KW - nitric oxide KW - data processing KW - mass spectra KW - atmosphere KW - Mars KW - ions KW - nitrogen KW - carbon dioxide KW - argon KW - terrestrial planets KW - planets KW - carbon monoxide KW - noble gases KW - carbon KW - helium KW - spectra KW - orbital observations KW - Neutral Gas and Ion Mass Spectrometer KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824214704?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Reduction+and+post-processing+of+early+data+from+MAVEN%27s+Neutral+Gas+and+Ion+Mass+Spectrometer+%28NGIMS%29&rft.au=Elrod%2C+Meredith+K%3BMahaffy%2C+Paul+R%3BBenna%2C+M%3BAnonymous&rft.aulast=Elrod&rft.aufirst=Meredith&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2661.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 2 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Feb. 3, 2016 N1 - Last updated - 2016-09-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - altitude; argon; atmosphere; carbon; carbon dioxide; carbon monoxide; data acquisition; data processing; helium; ionosphere; ions; Mars; mass spectra; MAVEN Mission; Neutral Gas and Ion Mass Spectrometer; nitric oxide; nitrogen; noble gases; orbital observations; oxygen; planets; spectra; terrestrial planets ER - TY - JOUR T1 - MAVEN observations of Marsward ion flux in the near Mars magnetotail AN - 1824214698; 2016-081966 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Harada, Y AU - Halekas, J S AU - Mitchell, D L AU - McFadden, J P AU - Connerney, J E P AU - Espley, J R AU - DiBraccio, G A AU - Ergun, R E AU - Andersson, L AU - Hara, T AU - Curry, S M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1586 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - ionosphere KW - MAVEN Mission KW - magnetotail KW - altitude KW - solar wind KW - magnetosphere KW - Mars KW - ions KW - magnetic field KW - terrestrial planets KW - planets KW - atmospheric escape KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824214698?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=MAVEN+observations+of+Marsward+ion+flux+in+the+near+Mars+magnetotail&rft.au=Harada%2C+Y%3BHalekas%2C+J+S%3BMitchell%2C+D+L%3BMcFadden%2C+J+P%3BConnerney%2C+J+E+P%3BEspley%2C+J+R%3BDiBraccio%2C+G+A%3BErgun%2C+R+E%3BAndersson%2C+L%3BHara%2C+T%3BCurry%2C+S+M%3BAnonymous&rft.aulast=Harada&rft.aufirst=Y&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1586.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 5 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Jan. 29, 2016 N1 - Last updated - 2016-09-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - altitude; atmospheric escape; ionosphere; ions; magnetic field; magnetosphere; magnetotail; Mars; MAVEN Mission; planets; solar wind; terrestrial planets ER - TY - JOUR T1 - MAVEN characterization of low-frequency plasma waves in the Martian magnetosphere AN - 1824214528; 2016-081967 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Ruhunusiri, Suranga AU - Halekas, J S AU - Connerney, J E P AU - Espley, J R AU - Larson, D AU - Mitchell, D L AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2184 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - MAVEN Mission KW - shock waves KW - magnetohydrodynamics KW - bow shock KW - solar wind KW - magnetosphere KW - Mars KW - low-frequency waves KW - plasma waves KW - ions KW - magnetic field KW - terrestrial planets KW - planets KW - velocity KW - orbital observations KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824214528?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=MAVEN+characterization+of+low-frequency+plasma+waves+in+the+Martian+magnetosphere&rft.au=Ruhunusiri%2C+Suranga%3BHalekas%2C+J+S%3BConnerney%2C+J+E+P%3BEspley%2C+J+R%3BLarson%2C+D%3BMitchell%2C+D+L%3BAnonymous&rft.aulast=Ruhunusiri&rft.aufirst=Suranga&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2184.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 11 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Jan. 29, 2016 N1 - Last updated - 2016-09-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - bow shock; ions; low-frequency waves; magnetic field; magnetohydrodynamics; magnetosphere; Mars; MAVEN Mission; orbital observations; planets; plasma waves; shock waves; solar wind; terrestrial planets; velocity ER - TY - JOUR T1 - MAVEN observations of magnetosonic like waves upstream of Mars AN - 1824214375; 2016-081968 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Ruhunusiri, Suranga AU - Halekas, J S AU - Connerney, J E P AU - Espley, J R AU - Larson, D AU - Mitchell, D L AU - Brain, D A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2594 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - terrestrial planets KW - planets KW - MAVEN Mission KW - magnetosonic waves KW - waves KW - Mars KW - interplanetary magnetic field KW - protons KW - ions KW - magnetic field KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824214375?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=MAVEN+observations+of+magnetosonic+like+waves+upstream+of+Mars&rft.au=Ruhunusiri%2C+Suranga%3BHalekas%2C+J+S%3BConnerney%2C+J+E+P%3BEspley%2C+J+R%3BLarson%2C+D%3BMitchell%2C+D+L%3BBrain%2C+D+A%3BAnonymous&rft.aulast=Ruhunusiri&rft.aufirst=Suranga&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2594.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 11 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Jan. 29, 2016 N1 - Last updated - 2016-09-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - interplanetary magnetic field; ions; magnetic field; magnetosonic waves; Mars; MAVEN Mission; planets; protons; terrestrial planets; waves ER - TY - JOUR T1 - Initial MAVEN observations of ion cyclotron waves and pickup protons; a measurement of hydrogen loss in the upper Martian exosphere AN - 1824214146; 2016-081977 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Crary, Frank J AU - Connerney, J E P AU - Espley, J R AU - McFadden, J P AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2628 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - MAVEN Mission KW - bow shock KW - mass spectra KW - electromagnetic waves KW - Mars KW - electrostatic properties KW - protons KW - ions KW - exosphere KW - terrestrial planets KW - Super-Thermal And Thermal Ion Composition instrument KW - planets KW - hydrogen KW - Mars Global Surveyor Program KW - spectra KW - Mars Express KW - STATIC instrument KW - ion cyclotron waves KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824214146?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Initial+MAVEN+observations+of+ion+cyclotron+waves+and+pickup+protons%3B+a+measurement+of+hydrogen+loss+in+the+upper+Martian+exosphere&rft.au=Crary%2C+Frank+J%3BConnerney%2C+J+E+P%3BEspley%2C+J+R%3BMcFadden%2C+J+P%3BAnonymous&rft.aulast=Crary&rft.aufirst=Frank&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2628.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 6 N1 - PubXState - TX N1 - SuppNotes - Accessed on Feb. 2, 2016 N1 - Last updated - 2016-09-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - bow shock; electromagnetic waves; electrostatic properties; exosphere; hydrogen; ion cyclotron waves; ions; Mars; Mars Express; Mars Global Surveyor Program; mass spectra; MAVEN Mission; planets; protons; spectra; STATIC instrument; Super-Thermal And Thermal Ion Composition instrument; terrestrial planets ER - TY - JOUR T1 - Fluorine and lithium at the Kimberley outcrop, Gale Crater AN - 1824213844; 2016-082032 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Forni, Olivier AU - Vaniman, D T AU - Le Deit, Laetitia AU - Clegg, S M AU - Lanza, N L AU - Lasue, Jeremie AU - Bish, David L AU - Mangold, Nicholas AU - Wiens, Roger C AU - Meslin, P Y AU - Gasnault, Olivier AU - Maurice, Sylvestre AU - Cousin, A AU - Toplis, M J AU - Newsom, Horton AU - Rampe, E B AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1989 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - silicates KW - halides KW - alteration KW - fluorides KW - halogens KW - sandstone KW - Mars KW - temperature KW - Gale Crater KW - emission spectra KW - sedimentary rocks KW - major elements KW - fluorine KW - siltstone KW - Curiosity Rover KW - LIBS spectra KW - spectra KW - fluorite KW - ChemCam instrument KW - Aeolis Palus KW - lithium KW - alkali metals KW - smectite KW - Kimberley Formation KW - conglomerate KW - clay minerals KW - terrestrial planets KW - planets KW - metals KW - Mars Science Laboratory KW - sheet silicates KW - clastic rocks KW - Dillinger Member KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824213844?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Fluorine+and+lithium+at+the+Kimberley+outcrop%2C+Gale+Crater&rft.au=Forni%2C+Olivier%3BVaniman%2C+D+T%3BLe+Deit%2C+Laetitia%3BClegg%2C+S+M%3BLanza%2C+N+L%3BLasue%2C+Jeremie%3BBish%2C+David+L%3BMangold%2C+Nicholas%3BWiens%2C+Roger+C%3BMeslin%2C+P+Y%3BGasnault%2C+Olivier%3BMaurice%2C+Sylvestre%3BCousin%2C+A%3BToplis%2C+M+J%3BNewsom%2C+Horton%3BRampe%2C+E+B%3BAnonymous&rft.aulast=Forni&rft.aufirst=Olivier&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1989.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 17 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Feb. 25, 2016 N1 - Last updated - 2016-09-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Aeolis Palus; alkali metals; alteration; ChemCam instrument; clastic rocks; clay minerals; conglomerate; Curiosity Rover; Dillinger Member; emission spectra; fluorides; fluorine; fluorite; Gale Crater; halides; halogens; Kimberley Formation; LIBS spectra; lithium; major elements; Mars; Mars Science Laboratory; metals; planets; sandstone; sedimentary rocks; sheet silicates; silicates; siltstone; smectite; spectra; temperature; terrestrial planets ER - TY - JOUR T1 - MAVEN observations of the effects of Comet Siding Spring on the Mars atmosphere AN - 1824213812; 2016-081959 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Yelle, Roger V AU - Benna, M AU - Mahaffy, Paul R AU - Elrod, Meredith AU - Epsley, J AU - Rahmati, A AU - Cravens, T E AU - Larson, D AU - Jakosky, Bruce M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2534 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - Siding Spring Comet KW - MAVEN Mission KW - solar wind KW - magnetic anomalies KW - atmosphere KW - Mars KW - ions KW - magnetic field KW - comae KW - temperature KW - terrestrial planets KW - planets KW - comets KW - Mars Atmosphere and Volatile Evolution Mission KW - velocity KW - orbital observations KW - energy KW - electrons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824213812?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=MAVEN+observations+of+the+effects+of+Comet+Siding+Spring+on+the+Mars+atmosphere&rft.au=Yelle%2C+Roger+V%3BBenna%2C+M%3BMahaffy%2C+Paul+R%3BElrod%2C+Meredith%3BEpsley%2C+J%3BRahmati%2C+A%3BCravens%2C+T+E%3BLarson%2C+D%3BJakosky%2C+Bruce+M%3BAnonymous&rft.aulast=Yelle&rft.aufirst=Roger&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2534.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - PubXState - TX N1 - SuppNotes - Accessed on Jan. 28, 2016 N1 - Last updated - 2016-09-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - atmosphere; comae; comets; electrons; energy; ions; magnetic anomalies; magnetic field; Mars; Mars Atmosphere and Volatile Evolution Mission; MAVEN Mission; orbital observations; planets; Siding Spring Comet; solar wind; temperature; terrestrial planets; velocity ER - TY - JOUR T1 - First results of the Martian plasma environment below 500 km from the Langmuir Probe and Waves instrument on the MAVEN Mission AN - 1824213739; 2016-081969 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Fowler, C M AU - Ergun, R E AU - Andersson, L AU - Mooroka, M W AU - Delory, G T AU - McEnulty, T AU - Weber, T AU - Eriksson, A I AU - Andrews, D AU - Mitchell, D L AU - McFadden, J P AU - Halekas, J S AU - Larson, D AU - Connerney, J E P AU - Espley, J R AU - Eparvier, F G AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2115 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - ionosphere KW - MAVEN Mission KW - plasma KW - altitude KW - atmosphere KW - Mars KW - temperature KW - terrestrial planets KW - planets KW - Langmuir Probe and Waves instrument KW - dynamics KW - orbital observations KW - ionopause KW - electrons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824213739?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=First+results+of+the+Martian+plasma+environment+below+500+km+from+the+Langmuir+Probe+and+Waves+instrument+on+the+MAVEN+Mission&rft.au=Fowler%2C+C+M%3BErgun%2C+R+E%3BAndersson%2C+L%3BMooroka%2C+M+W%3BDelory%2C+G+T%3BMcEnulty%2C+T%3BWeber%2C+T%3BEriksson%2C+A+I%3BAndrews%2C+D%3BMitchell%2C+D+L%3BMcFadden%2C+J+P%3BHalekas%2C+J+S%3BLarson%2C+D%3BConnerney%2C+J+E+P%3BEspley%2C+J+R%3BEparvier%2C+F+G%3BAnonymous&rft.aulast=Fowler&rft.aufirst=C&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2115.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 4 N1 - PubXState - TX N1 - SuppNotes - Accessed on Jan. 29, 2016 N1 - Last updated - 2016-09-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - altitude; atmosphere; dynamics; electrons; ionopause; ionosphere; Langmuir Probe and Waves instrument; Mars; MAVEN Mission; orbital observations; planets; plasma; temperature; terrestrial planets ER - TY - JOUR T1 - Stratigraphy of phyllosilicate and hydrated sulfate deposits in eastern Sinus Meridiani AN - 1824213620; 2016-082013 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Wiseman, S M AU - Beyer, R A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2143 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - silicates KW - hydrates KW - CRISM KW - sulfates KW - smectite KW - Mars KW - digital terrain models KW - Context Camera KW - layered materials KW - clay minerals KW - terrestrial planets KW - planets KW - hydration KW - topography KW - terrains KW - sedimentary rocks KW - stratigraphic units KW - sheet silicates KW - Sinus Meridiani KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824213620?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Stratigraphy+of+phyllosilicate+and+hydrated+sulfate+deposits+in+eastern+Sinus+Meridiani&rft.au=Wiseman%2C+S+M%3BBeyer%2C+R+A%3BAnonymous&rft.aulast=Wiseman&rft.aufirst=S&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2143.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 20 N1 - PubXState - TX N1 - Document feature - illus. incl. sketch map N1 - SuppNotes - Accessed on Feb. 17, 2016 N1 - Last updated - 2016-09-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - clay minerals; Context Camera; CRISM; digital terrain models; hydrates; hydration; layered materials; Mars; planets; sedimentary rocks; sheet silicates; silicates; Sinus Meridiani; smectite; stratigraphic units; sulfates; terrains; terrestrial planets; topography ER - TY - JOUR T1 - The diversity of sediments at Gale Crater from ChemCam observations; evidence for multiple sediment source chemistries, diverse alteration histories, and multiple diagenetic episodes AN - 1824213551; 2016-082029 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Blaney, D L AU - Wiens, Roger C AU - Maurice, Sylvestre AU - Anderson, Ryan AU - Bridges, John AU - Clegg, S M AU - Le Deit, Laetitia AU - Fisk, Martin AU - Forni, Olivier AU - Gasnault, Olivier AU - Kah, Linda AU - Lanza, Nina AU - Lasue, Jeremie AU - Mangold, Nicholas AU - Nachon, Marion AU - Newsom, Horton AU - Piller, Agnes AU - Sautter, Violaine AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2093 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - halides KW - calcium sulfate KW - alteration KW - magnesium KW - fluorides KW - sandstone KW - Mars KW - silicon KW - manganese KW - iron KW - Gale Crater KW - emission spectra KW - sedimentary rocks KW - aluminum KW - Curiosity Rover KW - LIBS spectra KW - ChemCam KW - spectra KW - heterogeneity KW - Yellowknife Bay KW - alkaline earth metals KW - mudstone KW - magnesium sulfates KW - veins KW - terrestrial planets KW - planets KW - titanium KW - metals KW - diagenesis KW - Mars Science Laboratory KW - clastic rocks KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824213551?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=The+diversity+of+sediments+at+Gale+Crater+from+ChemCam+observations%3B+evidence+for+multiple+sediment+source+chemistries%2C+diverse+alteration+histories%2C+and+multiple+diagenetic+episodes&rft.au=Blaney%2C+D+L%3BWiens%2C+Roger+C%3BMaurice%2C+Sylvestre%3BAnderson%2C+Ryan%3BBridges%2C+John%3BClegg%2C+S+M%3BLe+Deit%2C+Laetitia%3BFisk%2C+Martin%3BForni%2C+Olivier%3BGasnault%2C+Olivier%3BKah%2C+Linda%3BLanza%2C+Nina%3BLasue%2C+Jeremie%3BMangold%2C+Nicholas%3BNachon%2C+Marion%3BNewsom%2C+Horton%3BPiller%2C+Agnes%3BSautter%2C+Violaine%3BAnonymous&rft.aulast=Blaney&rft.aufirst=D&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2093.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 19 N1 - PubXState - TX N1 - Document feature - illus. incl. sketch map N1 - SuppNotes - Accessed on Feb. 23, 2016 N1 - Last updated - 2016-09-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alkaline earth metals; alteration; aluminum; calcium sulfate; ChemCam; clastic rocks; Curiosity Rover; diagenesis; emission spectra; fluorides; Gale Crater; halides; heterogeneity; iron; LIBS spectra; magnesium; magnesium sulfates; manganese; Mars; Mars Science Laboratory; metals; mudstone; planets; sandstone; sedimentary rocks; silicon; spectra; terrestrial planets; titanium; veins; Yellowknife Bay ER - TY - JOUR T1 - Isotopic composition of carbon dioxide released from Confidence Hills sediment as measured by the Sample Analysis at Mars (SAM) quadrupole mass spectrometer AN - 1824212713; 2016-082030 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Franz, Heather B AU - Mahaffy, Paul R AU - Stern, J AU - Archer, P, Jr AU - Conrad, P AU - Eigenbrode, J AU - Freissinet, C AU - Glavin, D AU - Grotzinger, J P AU - Jones, J AU - Ming, D W AU - McAdam, A AU - Morris, R V AU - Navarro-Gonzalez, Rafael AU - Owen, T AU - Steele, A AU - Summons, R AU - Sutter, B AU - Webster, C R AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 3014 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - oxygen KW - isotopes KW - mass spectra KW - Mars KW - stable isotopes KW - carbon dioxide KW - pyrolysis KW - carbon KW - Curiosity Rover KW - sediments KW - spectra KW - water KW - sulfur dioxide KW - quadrupole mass spectra KW - Confidence Hills KW - isotope ratios KW - C-13/C-12 KW - O-18/O-16 KW - gases KW - terrestrial planets KW - planets KW - volatiles KW - Sample Analysis at Mars KW - Mars Science Laboratory KW - Mount Sharp KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824212713?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Isotopic+composition+of+carbon+dioxide+released+from+Confidence+Hills+sediment+as+measured+by+the+Sample+Analysis+at+Mars+%28SAM%29+quadrupole+mass+spectrometer&rft.au=Franz%2C+Heather+B%3BMahaffy%2C+Paul+R%3BStern%2C+J%3BArcher%2C+P%2C+Jr%3BConrad%2C+P%3BEigenbrode%2C+J%3BFreissinet%2C+C%3BGlavin%2C+D%3BGrotzinger%2C+J+P%3BJones%2C+J%3BMing%2C+D+W%3BMcAdam%2C+A%3BMorris%2C+R+V%3BNavarro-Gonzalez%2C+Rafael%3BOwen%2C+T%3BSteele%2C+A%3BSummons%2C+R%3BSutter%2C+B%3BWebster%2C+C+R%3BAnonymous&rft.aulast=Franz&rft.aufirst=Heather&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/3014.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 6 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Feb. 25, 2016 N1 - Last updated - 2016-09-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - C-13/C-12; carbon; carbon dioxide; Confidence Hills; Curiosity Rover; gases; isotope ratios; isotopes; Mars; Mars Science Laboratory; mass spectra; Mount Sharp; O-18/O-16; oxygen; planets; pyrolysis; quadrupole mass spectra; Sample Analysis at Mars; sediments; spectra; stable isotopes; sulfur dioxide; terrestrial planets; volatiles; water ER - TY - JOUR T1 - Bromine isotope measurement by MC-ICP-MS in wet plasma conditions AN - 1819895765; 2016-079711 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Louvat, P AU - Coleman, M AU - Bonifacie, M AU - Giunta, T AU - Michel, A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 1927 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - chlorine KW - sea water KW - isotopes KW - isotope ratios KW - halogens KW - Cl-37 KW - mass spectra KW - bromine KW - measurement KW - ICP mass spectra KW - sample preparation KW - multicollector methods KW - brines KW - Br-81 KW - spectra KW - ion exchange KW - Br-81/Br-79 KW - geochemistry KW - 02B:Hydrochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819895765?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Bromine+isotope+measurement+by+MC-ICP-MS+in+wet+plasma+conditions&rft.au=Louvat%2C+P%3BColeman%2C+M%3BBonifacie%2C+M%3BGiunta%2C+T%3BMichel%2C+A%3BAnonymous&rft.aulast=Louvat&rft.aufirst=P&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=1927&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/1927.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 8 N1 - Last updated - 2016-09-16 N1 - SubjectsTermNotLitGenreText - Br-81; Br-81/Br-79; brines; bromine; chlorine; Cl-37; geochemistry; halogens; ICP mass spectra; ion exchange; isotope ratios; isotopes; mass spectra; measurement; multicollector methods; sample preparation; sea water; spectra ER - TY - JOUR T1 - Mineralogy of the Pahrump Hills region, Gale Crater, Mars AN - 1815673237; 2016-075223 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Rampe, Elizabeth B AU - Ming, D W AU - Vaniman, D T AU - Blake, D F AU - Chipera, S J AU - Morris, R V AU - Bish, David L AU - Cavanagh, P D AU - Achilles, C N AU - Bristow, T F AU - Morrison, S M AU - Treiman, A H AU - Downs, R T AU - Farmer, J D AU - Crisp, J A AU - Fendrich, K AU - Morookian, J M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 2587 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - silicates KW - alteration KW - X-ray diffraction data KW - Mars KW - Gale Crater KW - sedimentary rocks KW - mineral composition KW - X-ray fluorescence spectra KW - thickness KW - spectra KW - depositional environment KW - chemical composition KW - sedimentary structures KW - pH KW - Confidence Hills KW - sulfates KW - Murray Formation KW - saponite KW - Pahrump Hills KW - clay minerals KW - terrestrial planets KW - jarosite KW - planets KW - lacustrine environment KW - sheet silicates KW - Mount Sharp KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815673237?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Mineralogy+of+the+Pahrump+Hills+region%2C+Gale+Crater%2C+Mars&rft.au=Rampe%2C+Elizabeth+B%3BMing%2C+D+W%3BVaniman%2C+D+T%3BBlake%2C+D+F%3BChipera%2C+S+J%3BMorris%2C+R+V%3BBish%2C+David+L%3BCavanagh%2C+P+D%3BAchilles%2C+C+N%3BBristow%2C+T+F%3BMorrison%2C+S+M%3BTreiman%2C+A+H%3BDowns%2C+R+T%3BFarmer%2C+J+D%3BCrisp%2C+J+A%3BFendrich%2C+K%3BMorookian%2C+J+M%3BAnonymous&rft.aulast=Rampe&rft.aufirst=Elizabeth&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=2587&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/2587.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 6 N1 - Last updated - 2016-09-01 N1 - SubjectsTermNotLitGenreText - alteration; chemical composition; clay minerals; Confidence Hills; depositional environment; Gale Crater; jarosite; lacustrine environment; Mars; mineral composition; Mount Sharp; Murray Formation; Pahrump Hills; pH; planets; saponite; sedimentary rocks; sedimentary structures; sheet silicates; silicates; spectra; sulfates; terrestrial planets; thickness; X-ray diffraction data; X-ray fluorescence spectra ER - TY - JOUR T1 - Off-axis shallow-sea venting of alkaline, H (sub 2) and CH (sub 4) enriched fluids; the Strytan hydrothermal field (SHF), Eyjafjorgur, Iceland AN - 1815672960; 2016-075173 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Price, Roy E AU - Hoehler, Tori AU - Boyd, Eric AU - Wehrmann, Laura M AU - Amend, Jan AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 2537 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - calcium KW - volcanic rocks KW - igneous rocks KW - aliphatic hydrocarbons KW - Europe KW - salinity KW - temperature KW - Mid-Atlantic Ridge KW - plutonic rocks KW - mineral composition KW - basalts KW - Eyjafjordur Iceland KW - Lost City hydrothermal field KW - vents KW - pH KW - processes KW - alkaline earth metals KW - Strytan hydrothermal field KW - methane KW - Western Europe KW - alkanes KW - Atlantis Massif KW - ultramafics KW - geothermal energy KW - geothermal fields KW - carbon monoxide KW - organic compounds KW - metals KW - hydrogen KW - peridotites KW - hydrocarbons KW - North Atlantic KW - Iceland KW - Atlantic Ocean KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815672960?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Off-axis+shallow-sea+venting+of+alkaline%2C+H+%28sub+2%29+and+CH+%28sub+4%29+enriched+fluids%3B+the+Strytan+hydrothermal+field+%28SHF%29%2C+Eyjafjorgur%2C+Iceland&rft.au=Price%2C+Roy+E%3BHoehler%2C+Tori%3BBoyd%2C+Eric%3BWehrmann%2C+Laura+M%3BAmend%2C+Jan%3BAnonymous&rft.aulast=Price&rft.aufirst=Roy&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=2537&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/2537.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Last updated - 2016-11-17 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkaline earth metals; alkanes; Atlantic Ocean; Atlantis Massif; basalts; calcium; carbon monoxide; Europe; Eyjafjordur Iceland; geothermal energy; geothermal fields; hydrocarbons; hydrogen; Iceland; igneous rocks; Lost City hydrothermal field; metals; methane; Mid-Atlantic Ridge; mineral composition; North Atlantic; organic compounds; peridotites; pH; plutonic rocks; processes; salinity; Strytan hydrothermal field; temperature; ultramafics; vents; volcanic rocks; Western Europe ER - TY - JOUR T1 - Lunar magma ocean crystallization; constraints from fractional crystallization experiments AN - 1815672193; 2016-075224 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Rapp, J F AU - Draper, D S AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 2588 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - magma oceans KW - experimental studies KW - accretion KW - volcanic rocks KW - Moon KW - igneous rocks KW - anorthosite KW - models KW - KREEP KW - plutonic rocks KW - magmas KW - basalts KW - composition KW - crystallization KW - fractional crystallization KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815672193?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Lunar+magma+ocean+crystallization%3B+constraints+from+fractional+crystallization+experiments&rft.au=Rapp%2C+J+F%3BDraper%2C+D+S%3BAnonymous&rft.aulast=Rapp&rft.aufirst=J&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=2588&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/2588.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 5 N1 - Last updated - 2016-09-01 N1 - SubjectsTermNotLitGenreText - accretion; anorthosite; basalts; composition; crystallization; experimental studies; fractional crystallization; igneous rocks; KREEP; magma oceans; magmas; models; Moon; plutonic rocks; volcanic rocks ER - TY - JOUR T1 - The quest for a diurnal effect in lunar hydrogen abundance AN - 1807507748; 2016-065894 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Teodoro, Luis F A AU - Lawrence, David J AU - Elphic, Richard C AU - Eke, Vincent R AU - Feldman, William C AU - Maurice, Sylvestre AU - Siegler, Matthew A AU - Paige, David AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1786 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - water KW - time series analysis KW - Moon KW - Lunar Reconnaissance Orbiter KW - statistical analysis KW - Lunar Prospector Program KW - data processing KW - mapping KW - temperature KW - neutrons KW - neutron probe data KW - hydrogen KW - epithermal neutrons KW - ground-surface temperature KW - diurnal variations KW - corrections KW - Diviner Lunar Radiometer Experiment KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1807507748?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=The+quest+for+a+diurnal+effect+in+lunar+hydrogen+abundance&rft.au=Teodoro%2C+Luis+F+A%3BLawrence%2C+David+J%3BElphic%2C+Richard+C%3BEke%2C+Vincent+R%3BFeldman%2C+William+C%3BMaurice%2C+Sylvestre%3BSiegler%2C+Matthew+A%3BPaige%2C+David%3BAnonymous&rft.aulast=Teodoro&rft.aufirst=Luis+F&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1786.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on Mar. 21, 2016 N1 - Last updated - 2016-11-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - corrections; data processing; diurnal variations; Diviner Lunar Radiometer Experiment; epithermal neutrons; ground-surface temperature; hydrogen; instruments; Lunar Prospector Program; Lunar Reconnaissance Orbiter; mapping; Moon; neutron probe data; neutrons; statistical analysis; temperature; time series analysis; water ER - TY - JOUR T1 - Aerosol remote sensing; key measurements for climate change AN - 1807507646; 2016-066019 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Remer, Lorraine A AU - Levy, Robert C AU - Martins, J Vanderlei AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 2611 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - technology KW - properties KW - satellite methods KW - MISR KW - climate change KW - observations KW - measurement KW - quantitative analysis KW - Terra KW - aerosols KW - algorithms KW - instruments KW - remote sensing KW - MODIS KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1807507646?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Aerosol+remote+sensing%3B+key+measurements+for+climate+change&rft.au=Remer%2C+Lorraine+A%3BLevy%2C+Robert+C%3BMartins%2C+J+Vanderlei%3BAnonymous&rft.aulast=Remer&rft.aufirst=Lorraine&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=2611&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/2611.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Last updated - 2016-07-29 N1 - SubjectsTermNotLitGenreText - aerosols; algorithms; climate change; instruments; measurement; MISR; MODIS; observations; properties; quantitative analysis; remote sensing; satellite methods; technology; Terra ER - TY - JOUR T1 - Near-synchronous end to global-scale effusive volcanism on Mercury AN - 1807506788; 2016-065884 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Byrne, Paul K AU - Ostrach, Lillian R AU - Denevi, Brett W AU - Chapman, Clark R AU - Fassett, Caleb I AU - Whitten, Jennifer L AU - Klimczak, Christian AU - Mazarico, Erwan AU - Hauck, Steven A, II AU - Head, James W, III AU - Solomon, Sean C AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1731 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - size-frequency distribution KW - Debussy Basin KW - Beethoven Basin KW - Disney Basin KW - impact features KW - Caloris Basin KW - magmatism KW - resurfacing KW - effusion KW - surface textures KW - mapping KW - Faulkner Basin KW - terrestrial planets KW - planets KW - contraction KW - Alver Basin KW - volcanism KW - Mercury Planet KW - Tolstoj Basin KW - plains KW - impact craters KW - orbital observations KW - MESSENGER Mission KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1807506788?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Near-synchronous+end+to+global-scale+effusive+volcanism+on+Mercury&rft.au=Byrne%2C+Paul+K%3BOstrach%2C+Lillian+R%3BDenevi%2C+Brett+W%3BChapman%2C+Clark+R%3BFassett%2C+Caleb+I%3BWhitten%2C+Jennifer+L%3BKlimczak%2C+Christian%3BMazarico%2C+Erwan%3BHauck%2C+Steven+A%2C+II%3BHead%2C+James+W%2C+III%3BSolomon%2C+Sean+C%3BAnonymous&rft.aulast=Byrne&rft.aufirst=Paul&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1731.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 16 N1 - PubXState - TX N1 - Document feature - illus. incl. 2 tables, sketch map N1 - SuppNotes - Accessed on Mar. 17, 2016 N1 - Last updated - 2016-10-25 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Alver Basin; Beethoven Basin; Caloris Basin; contraction; Debussy Basin; Disney Basin; effusion; Faulkner Basin; impact craters; impact features; magmatism; mapping; Mercury Planet; MESSENGER Mission; orbital observations; plains; planets; resurfacing; size-frequency distribution; surface textures; terrestrial planets; Tolstoj Basin; volcanism ER - TY - JOUR T1 - Major volatiles from MSL SAM evolved gas analyses; Yellowknife Bay through lower Mount Sharp AN - 1807506738; 2016-065857 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - McAdam, Amy C AU - Archer, P D, Jr AU - Sutter, B AU - Franz, Heather B AU - Eigenbrode, J AU - Ming, D W AU - Morris, R V AU - Niles, Paul B AU - Stern, J C AU - Freissinet, C AU - Glavin, D P AU - Atreya, S K AU - Bish, D L AU - Blake, D F AU - Mahaffy, P R AU - Navarro-Gonzalez, R AU - McKay, C P AU - Wilhelm, M B AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2323 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - silicates KW - oxygen KW - sandstone KW - Mars KW - carbon dioxide KW - sedimentary rocks KW - outcrops KW - Yellowknife Bay KW - water KW - sulfur dioxide KW - Confidence Hills KW - sulfates KW - Murray Formation KW - smectite KW - Kimberley Formation KW - Sheepbed Mudstone KW - Pahrump Hills KW - clay minerals KW - terrestrial planets KW - aqueous alteration KW - planets KW - volatiles KW - Sample Analysis at Mars KW - evolved gas analysis KW - Mars Science Laboratory KW - sheet silicates KW - Mount Sharp KW - clastic rocks KW - carbonates KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1807506738?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Major+volatiles+from+MSL+SAM+evolved+gas+analyses%3B+Yellowknife+Bay+through+lower+Mount+Sharp&rft.au=McAdam%2C+Amy+C%3BArcher%2C+P+D%2C+Jr%3BSutter%2C+B%3BFranz%2C+Heather+B%3BEigenbrode%2C+J%3BMing%2C+D+W%3BMorris%2C+R+V%3BNiles%2C+Paul+B%3BStern%2C+J+C%3BFreissinet%2C+C%3BGlavin%2C+D+P%3BAtreya%2C+S+K%3BBish%2C+D+L%3BBlake%2C+D+F%3BMahaffy%2C+P+R%3BNavarro-Gonzalez%2C+R%3BMcKay%2C+C+P%3BWilhelm%2C+M+B%3BAnonymous&rft.aulast=McAdam&rft.aufirst=Amy&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2323.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 17 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Mar. 8, 2016 N1 - Last updated - 2016-07-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - aqueous alteration; carbon dioxide; carbonates; clastic rocks; clay minerals; Confidence Hills; evolved gas analysis; Kimberley Formation; Mars; Mars Science Laboratory; Mount Sharp; Murray Formation; outcrops; oxygen; Pahrump Hills; planets; Sample Analysis at Mars; sandstone; sedimentary rocks; Sheepbed Mudstone; sheet silicates; silicates; smectite; sulfates; sulfur dioxide; terrestrial planets; volatiles; water; Yellowknife Bay ER - TY - JOUR T1 - The isotopic composition of Martian atmospheric CO (sub 2) ; measurements with the Sample Analysis at Mars (SAM) quadrupole mass spectrometer AN - 1807506588; 2016-065858 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Franz, Heather B AU - Mahaffy, P R AU - Atreya, S K AU - Navaro-Gonzalez, R AU - Stern, J C AU - Trainer, M G AU - Wong, M H AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 3005 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - oxygen KW - isotopes KW - enrichment KW - data processing KW - mass spectra KW - Mars KW - calibration KW - stable isotopes KW - carbon dioxide KW - sublimation KW - carbon KW - Curiosity Rover KW - spectra KW - condensation KW - isotope ratios KW - C-13/C-12 KW - atmosphere KW - O-18/O-16 KW - terrestrial planets KW - planets KW - Sample Analysis at Mars KW - Mars Science Laboratory KW - seasonal variations KW - corrections KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1807506588?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=The+isotopic+composition+of+Martian+atmospheric+CO+%28sub+2%29+%3B+measurements+with+the+Sample+Analysis+at+Mars+%28SAM%29+quadrupole+mass+spectrometer&rft.au=Franz%2C+Heather+B%3BMahaffy%2C+P+R%3BAtreya%2C+S+K%3BNavaro-Gonzalez%2C+R%3BStern%2C+J+C%3BTrainer%2C+M+G%3BWong%2C+M+H%3BAnonymous&rft.aulast=Franz&rft.aufirst=Heather&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/3005.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 15 N1 - PubXState - TX N1 - SuppNotes - Accessed on Mar. 10, 2016 N1 - Last updated - 2016-07-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - atmosphere; C-13/C-12; calibration; carbon; carbon dioxide; condensation; corrections; Curiosity Rover; data processing; enrichment; isotope ratios; isotopes; Mars; Mars Science Laboratory; mass spectra; O-18/O-16; oxygen; planets; Sample Analysis at Mars; seasonal variations; spectra; stable isotopes; sublimation; terrestrial planets ER - TY - JOUR T1 - Global and local gravity field models of the Moon using GRAIL primary and extended mission data AN - 1807505852; 2016-065846 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Goossens, Sander J AU - Lemoine, Frank G AU - Sabaka, Terence J AU - Nicholas, Joseph B AU - Mazarico, Erwan AU - Rowlands, David D AU - Loomis, Bryant D AU - Chinn, Douglas S AU - Neumann, Gregory A AU - Smith, David E AU - Zuber, Maria T AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1395 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - scale factor KW - precision KW - Moon KW - orbits KW - altitude KW - GRAIL Mission KW - data processing KW - calibration KW - satellite methods KW - spherical harmonic analysis KW - models KW - Gravity Recovery and Interior Laboratory Mission KW - gravity field KW - errors KW - orbital observations KW - corrections KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1807505852?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Global+and+local+gravity+field+models+of+the+Moon+using+GRAIL+primary+and+extended+mission+data&rft.au=Goossens%2C+Sander+J%3BLemoine%2C+Frank+G%3BSabaka%2C+Terence+J%3BNicholas%2C+Joseph+B%3BMazarico%2C+Erwan%3BRowlands%2C+David+D%3BLoomis%2C+Bryant+D%3BChinn%2C+Douglas+S%3BNeumann%2C+Gregory+A%3BSmith%2C+David+E%3BZuber%2C+Maria+T%3BAnonymous&rft.aulast=Goossens&rft.aufirst=Sander&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1395.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 15 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Mar. 3, 2016 N1 - Last updated - 2016-11-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - altitude; calibration; corrections; data processing; errors; GRAIL Mission; gravity field; Gravity Recovery and Interior Laboratory Mission; models; Moon; orbital observations; orbits; precision; remote sensing; satellite methods; scale factor; spherical harmonic analysis ER - TY - JOUR T1 - Evidence for remanent magnetic fields on Mercury from MESSENGER's low-altitude campaign AN - 1807505665; 2016-065875 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Johnson, Catherine L AU - Purucker, Michael E AU - Philpott, Lydia C AU - Korth, Haje AU - Anderson, Brian AU - Tsyganenko, Nikolai A AU - Hauck, Steven A, II AU - Denevi, Brett W AU - Byrne, Paul K AU - Head, James W, III AU - Siegler, Matthew A AU - Phillips, Roger J AU - Solomon, Sean C AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1205 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - Suisei Planitia KW - altitude KW - passband filters KW - magnetization KW - paleomagnetism KW - magnetic field KW - iron KW - terrestrial planets KW - planets KW - remanent magnetization KW - metals KW - Mercury Planet KW - alloys KW - orbital observations KW - MESSENGER Mission KW - sulfides KW - Curie point KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1807505665?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Evidence+for+remanent+magnetic+fields+on+Mercury+from+MESSENGER%27s+low-altitude+campaign&rft.au=Johnson%2C+Catherine+L%3BPurucker%2C+Michael+E%3BPhilpott%2C+Lydia+C%3BKorth%2C+Haje%3BAnderson%2C+Brian%3BTsyganenko%2C+Nikolai+A%3BHauck%2C+Steven+A%2C+II%3BDenevi%2C+Brett+W%3BByrne%2C+Paul+K%3BHead%2C+James+W%2C+III%3BSiegler%2C+Matthew+A%3BPhillips%2C+Roger+J%3BSolomon%2C+Sean+C%3BAnonymous&rft.aulast=Johnson&rft.aufirst=Catherine&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1205.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 10 N1 - PubXState - TX N1 - Document feature - illus. incl. sketch map N1 - SuppNotes - Accessed on Mar. 15, 2016 N1 - Last updated - 2016-07-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alloys; altitude; Curie point; iron; magnetic field; magnetization; Mercury Planet; MESSENGER Mission; metals; orbital observations; paleomagnetism; passband filters; planets; remanent magnetization; Suisei Planitia; sulfides; terrestrial planets ER - TY - JOUR T1 - Confidence Hills mineralogy and CheMin results from base of Mt. Sharp, Pahrump Hills, Gale Crater, Mars AN - 1807505604; 2016-065854 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Cavanagh, P D AU - Bish, D L AU - Blake, D F AU - Vaniman, D T AU - Morris, R V AU - Ming, D W AU - Rampe, E B AU - Achilles, C N AU - Chipera, S J AU - Treiman, A H AU - Downs, R T AU - Morrison, S M AU - Fendrich, K V AU - Yen, A S AU - Grotzinger, J AU - Crisp, J A AU - Bristow, T F AU - Sarrazin, P C AU - Farmer, J D AU - Des Marais, D J AU - Stolper, Edward M AU - Morookian, J M AU - Wilson, M A AU - Spanovich, N AU - Anderson, R C AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract 2735.pdf PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - silicates KW - X-ray diffraction data KW - olivine group KW - Mars KW - Gale Crater KW - pyroxene group KW - mineral composition KW - clinopyroxene KW - sampling KW - hematite KW - Curiosity Rover KW - orthosilicates KW - oxides KW - CheMin KW - framework silicates KW - chain silicates KW - plagioclase KW - Confidence Hills KW - sulfates KW - Rietveld refinement KW - Pahrump Hills KW - forsterite KW - terrestrial planets KW - nesosilicates KW - jarosite KW - planets KW - Mars Science Laboratory KW - sheet silicates KW - orthopyroxene KW - Mount Sharp KW - feldspar group KW - magnetite KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1807505604?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Confidence+Hills+mineralogy+and+CheMin+results+from+base+of+Mt.+Sharp%2C+Pahrump+Hills%2C+Gale+Crater%2C+Mars&rft.au=Cavanagh%2C+P+D%3BBish%2C+D+L%3BBlake%2C+D+F%3BVaniman%2C+D+T%3BMorris%2C+R+V%3BMing%2C+D+W%3BRampe%2C+E+B%3BAchilles%2C+C+N%3BChipera%2C+S+J%3BTreiman%2C+A+H%3BDowns%2C+R+T%3BMorrison%2C+S+M%3BFendrich%2C+K+V%3BYen%2C+A+S%3BGrotzinger%2C+J%3BCrisp%2C+J+A%3BBristow%2C+T+F%3BSarrazin%2C+P+C%3BFarmer%2C+J+D%3BDes+Marais%2C+D+J%3BStolper%2C+Edward+M%3BMorookian%2C+J+M%3BWilson%2C+M+A%3BSpanovich%2C+N%3BAnderson%2C+R+C%3BAnonymous&rft.aulast=Cavanagh&rft.aufirst=P&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2735.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 8 N1 - PubXState - TX N1 - SuppNotes - Accessed on Mar. 8, 2016 N1 - Last updated - 2016-11-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - chain silicates; CheMin; clinopyroxene; Confidence Hills; Curiosity Rover; feldspar group; forsterite; framework silicates; Gale Crater; hematite; jarosite; magnetite; Mars; Mars Science Laboratory; mineral composition; Mount Sharp; nesosilicates; olivine group; orthopyroxene; orthosilicates; oxides; Pahrump Hills; plagioclase; planets; pyroxene group; Rietveld refinement; sampling; sheet silicates; silicates; sulfates; terrestrial planets; X-ray diffraction data ER - TY - JOUR T1 - Isotopic approaches to unravel evaporation history and paleo-atmospheric humidity on Earth and Mars AN - 1803778775; 2016-061993 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Gatti, Emma AU - Coleman, Max AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 1002 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - terrestrial environment KW - isotopes KW - Mars KW - crystal growth KW - D/O-18 KW - salt water KW - stable isotopes KW - laboratory studies KW - sedimentary rocks KW - mineral composition KW - gypsum KW - deuterium KW - experimental studies KW - chemically precipitated rocks KW - Earth KW - sulfates KW - arid environment KW - paleoatmosphere KW - evaporites KW - terrestrial planets KW - planets KW - evaporation KW - paleoenvironment KW - humidity KW - precipitation KW - hydrogen KW - water of crystallization KW - salt KW - 04:Extraterrestrial geology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803778775?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Isotopic+approaches+to+unravel+evaporation+history+and+paleo-atmospheric+humidity+on+Earth+and+Mars&rft.au=Gatti%2C+Emma%3BColeman%2C+Max%3BAnonymous&rft.aulast=Gatti&rft.aufirst=Emma&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=1002&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/1002.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt conference 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 3 N1 - Last updated - 2016-07-14 N1 - SubjectsTermNotLitGenreText - arid environment; chemically precipitated rocks; crystal growth; D/O-18; deuterium; Earth; evaporation; evaporites; experimental studies; gypsum; humidity; hydrogen; isotopes; laboratory studies; Mars; mineral composition; paleoatmosphere; paleoenvironment; planets; precipitation; salt; salt water; sedimentary rocks; stable isotopes; sulfates; terrestrial environment; terrestrial planets; water of crystallization ER - TY - JOUR T1 - Splashed Hadean seawater hypothesis AN - 1803778771; 2016-062011 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Genda, H AU - Ueno, Y AU - Foriel, J AU - Usui, T AU - Ueta, S AU - Bao, H AU - Sun, T AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 1020 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - Hadean KW - sea water KW - Earth KW - Precambrian KW - numerical models KW - asteroids KW - Moon KW - impacts KW - simulation KW - salt water KW - life origin KW - meteors KW - lunar samples KW - comets KW - 18:Solid-earth geophysics KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803778771?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Splashed+Hadean+seawater+hypothesis&rft.au=Genda%2C+H%3BUeno%2C+Y%3BForiel%2C+J%3BUsui%2C+T%3BUeta%2C+S%3BBao%2C+H%3BSun%2C+T%3BAnonymous&rft.aulast=Genda&rft.aufirst=H&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=1020&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/1020.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt conference 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 3 N1 - Last updated - 2016-07-14 N1 - SubjectsTermNotLitGenreText - asteroids; comets; Earth; Hadean; impacts; life origin; lunar samples; meteors; Moon; numerical models; Precambrian; salt water; sea water; simulation ER - TY - JOUR T1 - Analysis of cosmic spherule candidates from the Kwajalein micrometeorite collection AN - 1803773684; 2016-059897 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Wozniakiewicz, P J AU - Price, M C AU - Bradley, J P AU - Ishii, H A AU - Russell, S S AU - Zolensky, M E AU - Brownlee, D E AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 3450 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - silicates KW - calcium KW - magnesium KW - terrestrial environment KW - iron KW - meteorites KW - sampling KW - aluminum KW - Micronesia KW - collections KW - spherules KW - alkaline earth metals KW - human activity KW - alkali metals KW - atmosphere KW - electron microscopy data KW - sodium KW - micrometeorites KW - cosmic dust KW - Antarctica KW - metals KW - potassium KW - Oceania KW - Marshall Islands KW - Kwajalein Atoll KW - SEM data KW - particles KW - filters KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803773684?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Analysis+of+cosmic+spherule+candidates+from+the+Kwajalein+micrometeorite+collection&rft.au=Wozniakiewicz%2C+P+J%3BPrice%2C+M+C%3BBradley%2C+J+P%3BIshii%2C+H+A%3BRussell%2C+S+S%3BZolensky%2C+M+E%3BBrownlee%2C+D+E%3BAnonymous&rft.aulast=Wozniakiewicz&rft.aufirst=P&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=3450&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/3450.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 6 N1 - Last updated - 2016-11-17 N1 - SubjectsTermNotLitGenreText - alkali metals; alkaline earth metals; aluminum; Antarctica; atmosphere; calcium; collections; cosmic dust; electron microscopy data; filters; human activity; iron; Kwajalein Atoll; magnesium; Marshall Islands; metals; meteorites; micrometeorites; Micronesia; Oceania; particles; potassium; sampling; SEM data; silicates; sodium; spherules; terrestrial environment ER - TY - JOUR T1 - Assessment of coastal landscape adaptability to sea level rise through a decision support lens AN - 1800395929; 2016-055429 AB - Impacts of sea-level rise (SLR) will vary across the coastal landscape. Inundation is a relatively straightforward impact to understand and model, and dominates many of the online tools and resources to provide SLR decision support; however this approach does not adequately account for the resilience of some areas. A more comprehensive assessment of SLR impacts requires accounting for dynamic change; many areas have the potential to adapt to either preserve their current morphologic or ecologic state or transition to a new one (e.g. a forest becomes a marsh) under various SLR scenarios instead of simply inundating. We present results from a high resolution (30X30 m) coastal response model using a probabilistic (Bayesian network) approach that produces the likelihood of observing inundation or dynamic response for the Northeastern U.S. from Maine to Virginia. Relative SLR scenarios derived from multiple sources of information, including Coupled Model Intercomparison Project Phase 5 (CMIP5) models, are presented probabilistically over timescales that complement management and planning horizons. Scenarios are used in combination with elevation and land cover information to predict the probability of dynamic response of a given land cover type. Because we predict probabilities of dynamic response, we can translate our results using standardized uncertainty terminology to demonstrate how results can be applied to inform decision-making as well as highlight research gaps. Results are assessed regionally and at smaller spatial scales (e.g. wildlife refuges, cities) to explore the relationship between the composition and distribution of land cover types in an area and its ability to adapt to SLR. In so doing, we demonstrate a decision support application that highlights locations that may provide buffering or mitigation to preserve natural resources, habitat, and infrastructure. Applying this over a broad scale provides comparison with inundation-model guidance, and allows decision makers to identify and prioritize areas that may provide near- and longer-term tradeoffs in a regional context. JF - Abstracts with Programs - Geological Society of America AU - Lentz, Erika E AU - Thieler, E Robert AU - Plant, Nathaniel AU - Stippa, Saywer AU - Horton, Radley AU - Gesch, Dean AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 627 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800395929?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Assessment+of+coastal+landscape+adaptability+to+sea+level+rise+through+a+decision+support+lens&rft.au=Lentz%2C+Erika+E%3BThieler%2C+E+Robert%3BPlant%2C+Nathaniel%3BStippa%2C+Saywer%3BHorton%2C+Radley%3BGesch%2C+Dean%3BAnonymous&rft.aulast=Lentz&rft.aufirst=Erika&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=627&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-06-30 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Building a forest from the leaves; isotopic methods for reconstructing forest structure of the past AN - 1800395900; 2016-055441 AB - Although the age and location is disputed, the rise of the first closed-canopy forest is likely linked with the expansion of angiosperms in the late Cretaceous or early Cenozoic. The relationship between canopy closure and warming is of interest to paleobotanists and paleoclimatologists alike, because forests significantly impact both regional and global climates. Forests regulate water cycling on continents and maintain the warm, moist conditions to which they are best adapted. The carbon isotope "canopy effect" reflects the extent of canopy closure, and is well documented in delta 13C values of leaves in modern forests. To test the extent of canopy closure among the oldest documented angiosperm tropical forests, we analyzed isotopic characteristics of leaf fossils from the Guaduas and Cerrejon Formations. The Guaduas Fm. (Maastrichtian) contains some of the earliest angiosperm fossils in the Neotropics, and both leaf morphology and pollen records at this site suggest open-canopy structure. The Cerrejon Fm. (Paleocene) contains what are believed to be the first recorded fossil leaves from a closed-canopy forest. We analyzed the carbon isotope content of fossil leaves (n=199) representing ten families of eudicots (Apocynaceae, Bombaceae, Euphorbaceae, Fabaceae, Lauraceae, Malvaceae, Meliaceae, Menispermaceae, Moraceae, Sapotaceae). We interpreted extent of canopy coverage based on the range of delta 13C values. The narrow range of delta 13C values in leaves from the Guaduas Fm. (2.7 ppm) is consistent with an open canopy. For one site in the Cerrejon Fm. a significantly wider range in values (6.3 ppm) suggests a closed-canopy, which contrasts with a narrow range (3.3 ppm) from a site representing a lacustrine facies. The narrow range is consistent with a forest edge, as suggested by the taxa in the leaf assemblage, and consistent with modern studies that show leaves in lake sediments tend to be biased toward plants living at the lake edge. Such environments do not experience closed-canopy conditions, and express the isotopic characteristics associated with an open canopy. This study confirms the identity of the first closed-canopy forest in the geologic record via isotopic analysis and indicates this forest structure developed sometime following the K-Pg mass extinction, and prior to Eocene hyperthermal events, including the PETM. JF - Abstracts with Programs - Geological Society of America AU - Graham, Heather V AU - Wing, Scott L AU - Freeman, Katherine H AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 629 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 02D:Isotope geochemistry KW - 09:Paleobotany UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800395900?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Building+a+forest+from+the+leaves%3B+isotopic+methods+for+reconstructing+forest+structure+of+the+past&rft.au=Graham%2C+Heather+V%3BWing%2C+Scott+L%3BFreeman%2C+Katherine+H%3BAnonymous&rft.aulast=Graham&rft.aufirst=Heather&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=629&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-06-30 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Key recent scientific results from the Opportunity Rover's exploration of Endeavour Crater, Mars AN - 1800395061; 2016-057665 AB - The Opportunity Rover is currently in its 11th year of operations, exploring the rim of the approximately 22 km wide Noachian-age Endeavour Crater. Opportunity spent its 5th winter season in Cook Haven, a gentle swale along Murray Ridge. Two small rocks serendipitously overturned by rover wheel motions show evidence for aqueous precipitation of sulfates, and interaction with a strong oxidant (e.g., O2) to form a thin, high valence state Mn oxide coating. After the winter, Opportunity headed south to Cape Tribulation and explored Shoemaker formation impact breccias, finding numerous Ca-sulfate veins cutting across outcrops. A key target for Opportunity's measurements has been the Spirit of Saint Louis crater (SoSL), which is approximately 25 m wide, oval in plan view, shallow, flat-floored, and has a slightly raised rim. SoSL crater is surrounded by an apron of bright, polygonally-shaped outcrops and is superimposed on a gentle swale in Cape Tribulation. Rocks in a thin reddish zone on the rim are enriched in hematite, Si, and Ge, and depleted in Fe, relative to surrounding rocks. Apron rocks include an outcrop also enriched in Si and Ge, and slightly depleted in Fe. In general rocks in the crater and apron have elevated S relative to Shoemaker formation breccias, tracking values observed in the Cook Haven and the Hueytown (fracture running perpendicular to Cape Tribulation) outcrops. SoSL crater lies just to the west of Marathon Valley, a key target for exploration by Opportunity because five separate CRISM observations indicate the presence of Fe/Mg smectites on the upper valley floor. Opportunity data show that low relief, relatively bright polygonal outcrops dominate the valley floor where not covered by scree and soil shed from surrounding walls. Initial reconnaissance shows that the outcrops are breccias with compositions similar to the typical SoSL crater apron and floor rocks, although only the very upper portion of the valley has been explored as of August 2015. Pervasive but modest aqueous alteration of Endeavour's rim is implied by the combination of CRISM and Opportunity data, providing insight into early aqueous processes dominated in this location by relatively low water to rock ratios, and at least in part associated with enhanced fluid flow along fractures. JF - Abstracts with Programs - Geological Society of America AU - Arvidson, Raymond E AU - Squyres, Steven W AU - Gellert, Ralf AU - Herkenhoff, Kenneth E AU - Mittlefehldt, David W AU - Crumpler, Larry S AU - McLennan, Scott M AU - Farrand, William H AU - Jolliff, Bradley L AU - Morris, Richard V AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 601 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800395061?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Key+recent+scientific+results+from+the+Opportunity+Rover%27s+exploration+of+Endeavour+Crater%2C+Mars&rft.au=Arvidson%2C+Raymond+E%3BSquyres%2C+Steven+W%3BGellert%2C+Ralf%3BHerkenhoff%2C+Kenneth+E%3BMittlefehldt%2C+David+W%3BCrumpler%2C+Larry+S%3BMcLennan%2C+Scott+M%3BFarrand%2C+William+H%3BJolliff%2C+Bradley+L%3BMorris%2C+Richard+V%3BAnonymous&rft.aulast=Arvidson&rft.aufirst=Raymond&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=601&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-06-30 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - The degradational history of Endeavour Crater, Mars AN - 1800394989; 2016-057666 AB - Endeavour crater (2.28 degrees S, 354.77 degrees E) is a Noachian-aged 22 km-diameter impact structure of complex morphology in Meridiani Planum. The degradation state of the crater has been studied using Mars Reconnaissance Orbiter and Opportunity rover data. Exposed rim segments rise approximately 10 m to approximately 100 m above the level of the embaying Burns Formation and the crater is 200-500 m deep with the southern interior wall exposing over approximately 300 m relief. Both pre-impact rocks (Matijevic Formation) and Endeavour impact ejecta (Shoemaker Formation) are present at Cape York, but only the Shoemaker crops out (up to approximately 140 m) along the rim segment from Murray Ridge to Cape Tribulation. Study of pristine complex craters Bopolu and Tooting, and morphometry of other martian complex craters, enables us to approximate Endeavour's pristine form. The original rim likely averaged 410 m + or -200 m in elevation and a 250-275 m section of ejecta (+ or -50-60 m) would have composed a significant fraction of the rim height. The original crater depth was likely between 1.5 km and 2.2 km. Comparison between the predicted original and current form of Endeavour suggests approximately 100-200 m rim lowering that removed most ejecta in some locales (e.g., Cape York) while thick sections remain elsewhere (e.g., Cape Tribulation). Almost complete removal of ejecta at Cape York and minimal observable offset across fractures indicates current differences in rim relief are not solely due to original rim relief. Rim segments are embayed by approximately 100-200 m thickness of plains rocks outside the crater, but thicker deposits lie inside the crater. Ventifact textures confirm ongoing eolian erosion with the overall extent difficult to estimate. Analogy with degraded Noachian-aged craters south of Endeavour, however, suggests fluvial erosion dominated rim degradation in the Noachian and was likely followed by approximately 10s of meters modification by alternate processes. Such degradation is consistent with 1) the interpretation of a pediment on the rim flanks of Endeavour, 2) the formation of features such as Marathon Valley, 3) the nearly complete removal of ejecta at Cape York, 4) preservation of a thicker section of ejecta at Cape Tribulation and perhaps, 5) the origin of some gaps in the rim around the crater. A paucity of debris shed from the rim indicates most degradation occurred prior to embayment by the plains rocks. JF - Abstracts with Programs - Geological Society of America AU - Grant, John AU - Parker, Timothy AU - Crumpler, Larry S AU - Wilson, S AU - Golombek, M P AU - Mittlefehldt, David W AU - Jolliff, Bradley L AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 601 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800394989?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=The+degradational+history+of+Endeavour+Crater%2C+Mars&rft.au=Grant%2C+John%3BParker%2C+Timothy%3BCrumpler%2C+Larry+S%3BWilson%2C+S%3BGolombek%2C+M+P%3BMittlefehldt%2C+David+W%3BJolliff%2C+Bradley+L%3BAnonymous&rft.aulast=Grant&rft.aufirst=John&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=601&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-06-30 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Multispectral evidence of alteration from Murray Ridge to Marathon Valley observed by the Opportunity pancam on the rim of Endeavour Crater, Mars AN - 1800394984; 2016-057667 AB - The Mars Exploration Rover Opportunity has been traversing the rim of the Noachian-aged, 22 km diameter Endeavour crater. Circa sol 3390 of its mission, Opportunity reached the northern tip of the rim segment known as Solander Point and has since been traversing the rim to the south to its current location at the break in the rim known as Marathon Valley. The rocks making up the rim are dominated by impact breccias consisting of clasts and a finer-grained matrix. Several segments of the rim are transected by fractures as observed from orbital HiRISE imagery. Pancam multispectral observations of outcrop in these fracture regions, including part of the rim crest dubbed Murray Ridge, the Hueytown fracture, and Marathon Valley have been made. Over the range of 430 to 1010 nm there are changes in the multispectral reflectance signature of the breccia matrix with an increase in 535 nm and 904 nm band depth. This is attributed to oxidation and an increase in ferric oxides in these areas. In situ observations by the rover's APXS also indicate chemical differences associated with the matrix along these fractures, including increasing Fe/Mn southward from Solander Point to a region having an Al-OH signature in CRISM spectra, and generally higher SO3 in the Hueytown fracture region and the area around Spirit of St. Louis. Overturned rocks observed on Murray Ridge were determined by the APXS to have elevated Mn and Pancam spectra of the high Mn spots have a characteristic red, featureless slope. This spectrum was also observed in association with some coatings on blocks of the sulfate-rich Grasberg formation. Spectra resembling red hematite are observed in some zones in association with the craterform feature Spirit of St. Louis outside the mouth (to the west) of Marathon Valley. Marathon Valley itself has been observed from orbital hyperspectral observations by the CRISM sensor to host occurrences of Fe/Mg smectite minerals- indicating extensive aqueous alteration in this region. Pancam observations in Marathon Valley will play an important role in surveying outcrop and making VNIR spectral comparisons with clay bearing outcrop examined earlier in the mission at the Matijevic Hill region. JF - Abstracts with Programs - Geological Society of America AU - Farrand, William H AU - Bell, James F, III AU - Johnson, Jeffrey R AU - Mittlefehldt, David W AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 602 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800394984?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Multispectral+evidence+of+alteration+from+Murray+Ridge+to+Marathon+Valley+observed+by+the+Opportunity+pancam+on+the+rim+of+Endeavour+Crater%2C+Mars&rft.au=Farrand%2C+William+H%3BBell%2C+James+F%2C+III%3BJohnson%2C+Jeffrey+R%3BMittlefehldt%2C+David+W%3BAnonymous&rft.aulast=Farrand&rft.aufirst=William&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=602&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-06-30 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Chemical biosignature preservation in the Iron Mountain massive sulfide deposit; implications for biosignature detection on Mars with the Curiosity Rover AN - 1800394977; 2016-057672 AB - An ideal biosignature preserves both molecular and physical evidence of the organism(s) of interest. Here, we document the detection of molecular biosignatures (fatty acid methyl esters [FAMEs]) co-occurring with previously documented physical biosignatures (mineralized microbial filaments) in iron oxides ranging in age from modern to 1000s of years old from the Iron Mountain gossan (oxidized sulfide deposit), CA. Gossans, dominated by iron oxides, have been proposed as Martian environmental analogs. Organic molecules are thermodynamically unstable in the presence of iron oxides, but may be preserved depending on how they are hosted in mineralogically diverse sediments. Additionally, lipids are known to be well preserved molecular biomarkers over geologic time due to their ability to survive oxidative stress. The detection of FAMEs in these iron oxide rock samples used tetramethylammonium hydroxide (TMAH): MeOH (25%) thermochemolysis at 600 degrees C followed by gas chromatograph mass spectrometry (GCMS). A similar approach will be used by the Sample Analysis at Mars instrument suite (SAM) onboard the Curiosity rover. SAM has two TMAH: MeOH wet chemistry cups to search for organic molecules such as FAMEs in the sediments of lower mound of Mt. Sharp. To understand the effectiveness of the SAM TMAH experiment, we compared results of the SAM-like approach with TMAH to a more recently developed approach using thermal desorption at 350 degrees C after addition of an alternative reagent, trimethylsulfonium hydroxide (TMSH). Rock samples were broken open and sampled from their interior under organically clean conditions. Powdered rock samples were reacted with either TMAH or TMSH. Using TMAH, FAMEs detected in modern iron oxides included n-C10, 12, 14, 15, 16, 16:1, 17, 18, 18:1, 20. FAMEs detected in older (100s-1000s of years old) iron oxides included n-C8, 14, 16, 18. Using TMSH, FAMEs detected in modern iron oxides included the same as detected with TMAH, plus n-C18:2, 22. FAMEs detected in older iron oxides included n-C10, 12, 14, 16, 18, 18:1. The majority of these FAMEs are microbial biomarkers. Similar TMSH and SAM-like TMAH thermochemolysis results indicate that SAM is capable of detecting FAME biomarkers. Moreover, these results demonstrate the FAME biomarkers may be preserved over longer timescales in iron oxides on Mars. JF - Abstracts with Programs - Geological Society of America AU - Williams, Amy J AU - Eigenbrode, Jennifer L AU - Floyd, Melissa M AU - Wilhelm, Mary Beth AU - Freissinet, Caroline AU - Sumner, Dawn Y AU - Mahaffy, Paul R AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 603 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 27A:Economic geology, geology of ore deposits KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800394977?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Chemical+biosignature+preservation+in+the+Iron+Mountain+massive+sulfide+deposit%3B+implications+for+biosignature+detection+on+Mars+with+the+Curiosity+Rover&rft.au=Williams%2C+Amy+J%3BEigenbrode%2C+Jennifer+L%3BFloyd%2C+Melissa+M%3BWilhelm%2C+Mary+Beth%3BFreissinet%2C+Caroline%3BSumner%2C+Dawn+Y%3BMahaffy%2C+Paul+R%3BAnonymous&rft.aulast=Williams&rft.aufirst=Amy&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=603&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-06-30 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Compositions of diverse Noachian lithologies at Marathon Valley, Endeavour Crater rim, Mars AN - 1800393999; 2016-057669 AB - Mars Exploration Rover Opportunity has been exploring Meridiani Planum for 11+ years, and is presently investigating the geology of rim segments of 22 km diameter, Noachian-aged Endeavour crater. The Alpha Particle X-ray Spectrometer has determined the compositions of a pre-impact lithology and impact breccias representing ejecta from the crater. Opportunity is now investigating the head (higher elevation, western end) of Marathon Valley. This valley cuts eastward through the central portion of the Cape Tribulation rim segment and provides a window into the lower stratigraphic record of the rim. At the head of Marathon Valley is a shallow (few 10s of cm), ovoid depression approximately 27X36 x m in size, named Spirit of Saint Louis, that is surrounded by a approximately 20-30 cm wide zone of more reddish rocks (red zone). Opportunity has just entered a region of Marathon Valley that shows evidence for Fe-Mg smectite in Compact Reconnaissance Imaging Spectrometer for Mars spectra indicating areally extensive and distinct lithologic units and/or styles of aqueous alteration.Rocks at the head of Marathon Valley and within Spirit of Saint Louis are breccias (valley-head rocks). In some areas, layering inside Spirit of Saint Louis appears continuous with the rocks outside. The valley-head rocks are of similar, generally basaltic composition. The continuity in composition, texture and layering suggest the valley-head rocks are coeval breccias, likely from the Endeavour impact. These local breccias are similar in non-volatile-element composition to breccias investigated elsewhere on the rim. Rocks within the red zone are like those on either side in texture, but have higher Al, Si and Ge, and lower S, Mn, Fe, Ni and Zn as compared to rocks on either side. The valley-head rocks have higher S than most Endeavour rim breccias, while red zone rocks are like those latter breccias in S. Patches within the rocks outside Spirit of Saint Louis have higher Al, Si and Ge indicating red-zone-style alteration extended beyond the narrow red zone. Rocks on either side of the red zone and patches within it have the multispectral signature (determined by Panoramic Camera) of red hematite indicating an oxidizing environment. The red zone appears to be a thin alteration zone marking the border of Spirit of Saint Louis, but the origin of this morphologic feature remains obscure. JF - Abstracts with Programs - Geological Society of America AU - Mittlefehldt, David W AU - Gellert, Ralf AU - Yen, Albert S AU - Ming, Douglas W AU - van Bommel, Scott AU - Farrand, William H AU - Arvidson, Raymond E AU - Rice, James W, Jr AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 602 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800393999?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Compositions+of+diverse+Noachian+lithologies+at+Marathon+Valley%2C+Endeavour+Crater+rim%2C+Mars&rft.au=Mittlefehldt%2C+David+W%3BGellert%2C+Ralf%3BYen%2C+Albert+S%3BMing%2C+Douglas+W%3Bvan+Bommel%2C+Scott%3BFarrand%2C+William+H%3BArvidson%2C+Raymond+E%3BRice%2C+James+W%2C+Jr%3BAnonymous&rft.aulast=Mittlefehldt&rft.aufirst=David&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=602&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-06-30 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Geology-related science objectives and site selection criteria for a human mission to Mars AN - 1800393941; 2016-057674 AB - In response to a recent request from NASA, we evaluated the scientific objectives for a potential human mission to Mars in the 2030s. The scientific objectives, and corresponding martian site criteria, can be used in support of several further planning activities, the most immediate of which is the identification and prioritization of candidate landing sites and "exploration zones". Candidate scientific objectives were identified by considering intrinsic scientific merit, magnitude of the benefit of a proximal human, opportunity to make simultaneous observations from different vantage points, and opportunity to deliver scientific payloads of higher mass/complexity. Key amongst these objectives are those related to geological science: (1) Characterize the composition of surface units and evaluate the diverse geologic processes and paleoenvironments that have affected the martian crust; determine the sequence and duration of geological events, and establish their context within the geologic history of Mars to answer larger questions about planetary evolution; (2) Determine relative and absolute ages of geologic events and units, determine their history of burial, exhumation, and exposure, and relate their ages to major events through martian history; (3) Constrain the dynamics, structure, composition and evolution of the martian interior, to answer larger questions about planetary evolution. In addition, we have identified a list of 14 more detailed questions about the planet and its evolution (which will be refined based on discoveries in the next 2 decades). These science objectives were used to construct a set of criteria for potential human landing sites on Mars. We are seeking broader community input and feedback on this planning: the first landing site workshop will occur on Oct. 27-30, 2015 in Houston, TX (http://www.hou.usra.edu/meetings/explorationzone2015/). Current assumptions are that a future human landing site will lie in the center of a 100 km radius "exploration zone" with scientific regions of interest. The full package of scientific objectives would include contributions from geological science, astrobiology and atmospheric science. In addition, a mission of this type would have non-scientific objectives and limitations, including those related to ISRU and civil engineering. JF - Abstracts with Programs - Geological Society of America AU - Beaty, David W AU - Levy, Joseph AU - Rice, Melissa S AU - Niles, Paul B AU - Rice, James W, Jr AU - Bell, Mary Sue AU - Bleacher, Jacob E AU - Eppler, Dean B AU - Hays, Lindsay AU - Bass, Deborah S AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 603 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800393941?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Geology-related+science+objectives+and+site+selection+criteria+for+a+human+mission+to+Mars&rft.au=Beaty%2C+David+W%3BLevy%2C+Joseph%3BRice%2C+Melissa+S%3BNiles%2C+Paul+B%3BRice%2C+James+W%2C+Jr%3BBell%2C+Mary+Sue%3BBleacher%2C+Jacob+E%3BEppler%2C+Dean+B%3BHays%2C+Lindsay%3BBass%2C+Deborah+S%3BAnonymous&rft.aulast=Beaty&rft.aufirst=David&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=603&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-06-30 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Water distribution in the continental and oceanic upper mantle AN - 1800391293; 2016-055137 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Peslier, Anne H AU - Doucet, Luc S AU - Bizimis, Michael AU - Hui, Hejiu AU - Schaffer, Lillian S AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 2465 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - United States KW - upwelling KW - Tanzania KW - oxygen KW - East Africa KW - mantle KW - Russian Federation KW - bonding KW - infrared spectra KW - FTIR spectra KW - mineral composition KW - Commonwealth of Independent States KW - inclusions KW - Siberian Platform KW - Canadian Shield KW - spectra KW - Slave Province KW - Asia KW - mantle plumes KW - xenoliths KW - water KW - upper mantle KW - North America KW - lithosphere KW - Hawaii KW - East Pacific Ocean Islands KW - cratons KW - Kaapvaal Craton KW - hydrogen KW - Southern Africa KW - Oceania KW - Africa KW - Polynesia KW - 18:Solid-earth geophysics KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800391293?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Water+distribution+in+the+continental+and+oceanic+upper+mantle&rft.au=Peslier%2C+Anne+H%3BDoucet%2C+Luc+S%3BBizimis%2C+Michael%3BHui%2C+Hejiu%3BSchaffer%2C+Lillian+S%3BAnonymous&rft.aulast=Peslier&rft.aufirst=Anne&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=2465&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/2465.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 10 N1 - Last updated - 2016-06-30 N1 - SubjectsTermNotLitGenreText - Africa; Asia; bonding; Canadian Shield; Commonwealth of Independent States; cratons; East Africa; East Pacific Ocean Islands; FTIR spectra; Hawaii; hydrogen; inclusions; infrared spectra; Kaapvaal Craton; lithosphere; mantle; mantle plumes; mineral composition; North America; Oceania; oxygen; Polynesia; Russian Federation; Siberian Platform; Slave Province; Southern Africa; spectra; Tanzania; United States; upper mantle; upwelling; water; xenoliths ER - TY - JOUR T1 - Method development for linking plate tectonics and mantle oxidation using Ce and Eu oxidation states zircons AN - 1797536871; 2016-050491 AB - Oxygen fugacity (fO (sub 2) ) is a major control on trace element partitioning and during planetary differentiation. During the earliest stages of planet formation the Earth's magma ocean was reduced enough for liquid iron to precipitate and coalesce at the planet's center to form the core. Today, the mantle is more oxidized, and iron partitions primarily between silicate phases during mantle melting. Plate tectonics processes are thought to have influenced the progression of redox conditions in Earth's interior, however an unambiguous link has yet to be established. The analysis of the Rare Earth Elements (REE) Ce and Eu contents of a suite of zircons from SE Greenland, representative of early Proterozoic-style subduction and a 3.0 Ga continental crust block, could provide a definitive link between the onset of plate tectonics and mantle oxidation. Ce and Eu are multivalent elements that can exist in oxidation states other than REE3+ under modern magmatic conditions; enrichments and/or depletions in these elements relative to the other REE can be used as proxies for mantle fO (sub 2) . Under oxidizing conditions, Ce (super 4+) is preferentially accommodated into zircon versus Ce (super 3+) . A method for determining REE concentrations using a high resolution, single collector ICP-MS coupled with a high power excimer (ArF) laser system (193 nm wavelength) is demonstrated through the analysis of a compilation of standard reference glasses. Although REE analyses of zircons have been performed traditionally by implementing low resolution (m/Delta m < or = 500) mass discrimination (standard for quadrupole instruments), higher resolutions provide more confidence for the separation/isolation of isobaric interference. EMPA analyses were performed on the zircon suite to obtain internal standard concentrations (Yb, Hf). GeoREM glass standard values were used for internal standard concentrations. For LA-ICP-MS analysis, multiple mass stations of elements La through Hf were selected taking into account atomic, oxide, argide, and hydride isobaric interferences. Glass standards were analyzed using 150mu m, 65mu m, and 25mu m spot sizes. A recommended method for high-resolution REE analysis of zircons will be presented. JF - Abstracts with Programs - Geological Society of America AU - Funderburg, Rebecca AU - Arevalo, Ricardo AU - Locmelis, Marek AU - Piccoli, Philip AU - Reno, Barry L AU - Adachi, Tomoko AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 721 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 18:Solid-earth geophysics KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1797536871?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Method+development+for+linking+plate+tectonics+and+mantle+oxidation+using+Ce+and+Eu+oxidation+states+zircons&rft.au=Funderburg%2C+Rebecca%3BArevalo%2C+Ricardo%3BLocmelis%2C+Marek%3BPiccoli%2C+Philip%3BReno%2C+Barry+L%3BAdachi%2C+Tomoko%3BAnonymous&rft.aulast=Funderburg&rft.aufirst=Rebecca&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=721&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-06-17 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Probing Piermont Marsh depths for carbon storage, lower Hudson Estuary AN - 1797536799; 2016-050548 AB - Wetlands are important terrestrial carbon sinks that store significant amounts of organic matter representing potential greenhouse gases such as CO (sub 2) and methane, which would otherwise be released into the atmosphere. Vegetation type and increasing temperatures have an effect on marsh function, influencing the carbon levels stored belowground. Organic content, with regard to spatial variability and depth at various locations in Piermont Marsh (73 degrees 54'W, 41 degrees 02'N), Hudson River Estuary, were investigated through Loss-On-Ignition (LOI) of surface and downcore samples and depth probes. Three new transects were created, two extending from Tallman Mountain State Park (TMSP), west of Piermont Marsh, towards the Hudson River and a third transect extending from Eel Creek, south of Piermont, northwards. LOI of surface sediment samples and downcore data showed patterns that were consistent with findings from previous years that the interior of the marsh is higher in organic content than the edges, closer to stream banks. Downcore LOI data was consistent with the findings of Pederson et al. (2005) showing higher inorganic content with settlement. Probing data shows that the depth of the marsh is shallower closer to Tallman Mountain, ranging from 5 m in depth to as great as 14m at the Hudson margin. Similarly, there was a direct relationship between distance from Eel Creek and peat depth. Downcore data from three Crumkill Creek cores taken in 2012 showed greater organic content in the two cores taken in the interior of the marsh in comparison to the core closest to the stream bank. These findings reveal patterns of the marsh's depth and organic content, which will help in estimating a carbon sequestration budget for Piermont Marsh. JF - Abstracts with Programs - Geological Society of America AU - Peteet, Dorothy M AU - Haroon, Areej AU - Bedjean, Atsu AU - Carrasquillo, Ivan AU - Templo, Christian Avery AU - Newton, Robert J AU - Vincent, Susan AU - Corbett, J Elizabeth AU - Shumer, Melissa AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 731 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 06A:Sedimentary petrology KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1797536799?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Probing+Piermont+Marsh+depths+for+carbon+storage%2C+lower+Hudson+Estuary&rft.au=Peteet%2C+Dorothy+M%3BHaroon%2C+Areej%3BBedjean%2C+Atsu%3BCarrasquillo%2C+Ivan%3BTemplo%2C+Christian+Avery%3BNewton%2C+Robert+J%3BVincent%2C+Susan%3BCorbett%2C+J+Elizabeth%3BShumer%2C+Melissa%3BAnonymous&rft.aulast=Peteet&rft.aufirst=Dorothy&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=731&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-06-17 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Environmental consequences of big nasty impacts on the early Earth AN - 1797535437; 2016-052847 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Zahnle, Kevin AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 3559 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - Precambrian KW - impact features KW - Moon KW - condensation KW - atmosphere KW - water vapor KW - impacts KW - energy balance KW - ejecta KW - lunar craters KW - evaporation KW - paleoenvironment KW - paleotemperature KW - cooling KW - heating KW - Chicxulub Crater KW - Archean KW - energy KW - spherules KW - 12:Stratigraphy KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1797535437?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Environmental+consequences+of+big+nasty+impacts+on+the+early+Earth&rft.au=Zahnle%2C+Kevin%3BAnonymous&rft.aulast=Zahnle&rft.aufirst=Kevin&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=3559&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/3559.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt conference 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 2 N1 - Last updated - 2016-06-17 N1 - SubjectsTermNotLitGenreText - Archean; atmosphere; Chicxulub Crater; condensation; cooling; ejecta; energy; energy balance; evaporation; heating; impact features; impacts; lunar craters; Moon; paleoenvironment; paleotemperature; Precambrian; spherules; water vapor ER - TY - JOUR T1 - What does nature tell us about anthropogenic aerosol indirect effect? AN - 1797535339; 2016-052837 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Yuan, Tianle AU - Remer, Lorraine AU - Yu, Hongbin AU - Pickering, Kenneth AU - Oreopoulos, Lazaroso AU - Wilcox, Eric AU - Bian, Huisheng AU - Ziemke, Gerald AU - Posselt, Derek AU - Li, Zhanqing AU - Martins, Vanderlei AU - Albrecht, Rachel AU - Goodman, Steven AU - Allen, Dale AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 3549 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - clouds KW - human activity KW - pollution KW - atmospheric precipitation KW - properties KW - air-sea interface KW - convection KW - energy balance KW - temperature KW - air pollution KW - ozone KW - mitigation KW - lightning KW - ice KW - solar radiation KW - aerosols KW - electrical currents KW - climate KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1797535339?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=What+does+nature+tell+us+about+anthropogenic+aerosol+indirect+effect%3F&rft.au=Yuan%2C+Tianle%3BRemer%2C+Lorraine%3BYu%2C+Hongbin%3BPickering%2C+Kenneth%3BOreopoulos%2C+Lazaroso%3BWilcox%2C+Eric%3BBian%2C+Huisheng%3BZiemke%2C+Gerald%3BPosselt%2C+Derek%3BLi%2C+Zhanqing%3BMartins%2C+Vanderlei%3BAlbrecht%2C+Rachel%3BGoodman%2C+Steven%3BAllen%2C+Dale%3BAnonymous&rft.aulast=Yuan&rft.aufirst=Tianle&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=3549&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/3549.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt conference 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Last updated - 2016-06-17 N1 - SubjectsTermNotLitGenreText - aerosols; air pollution; air-sea interface; atmospheric precipitation; climate; clouds; convection; electrical currents; energy balance; human activity; ice; lightning; mitigation; ozone; pollution; properties; solar radiation; temperature ER - TY - JOUR T1 - delta (super 15) N of biovermiculations in a sulfidic cave system at Cueva de Villa Luz, Tabasco, Mexico AN - 1797532320; 2016-050517 AB - The Cueva de Villa Luz Cave system, located in the southern State of Tabasco, Mexico, is formed by active sulfuric acid speleogenesis. In this form of karstification, hydrogen sulfide volatilizes from sulfidic groundwaters, followed by oxidization to sulfuric acid, which reacts with carbonate to form gypsum. The presence of hydrogen sulfide in these caves is an energy source for chemolithoautotrophy and supports a diverse assemblage of microbial communities, including biovermiculations that coat the surfaces of the cave. Biovermiculations are bacterial mats or films with complex geometric forms similar in morphology to clay vermiculations but lacking the clay fractions. Sulfidic caves, in particular, support rapid growth of this hieroglyphics-like biopatterning on cave walls and ceilings. Similar biovermiculations in other sulfidic cave systems such as the Frasassi Cave System in Italy (Jones et al. 2008) and Movile Cave in Romania (Sarbu et al. 1996) were shown to have depleted nitrogen isotopic compositions (delta (super 15) N), possibly due to assimilation of volatilized ammonia from cave streams. To test whether biovermiculations in Cueva de Villa Luz exhibited similar (super 15) N depletion, samples of cave wall biovermiculations were collected for delta (super 13) C and delta (super 15) N analysis at the Planetary Environments Laboratory at NASA's Goddard Space Flight Center in Greenbelt, MD. delta (super 13) C and delta (super 15) N analyses were performed using a Costech 4010 ECS Elemental Analyzer coupled to a Thermo Scientific Delta V Plus Isotope Ratio Mass Spectrometer (EA-IRMS). The delta (super 13) C and delta (super 15) N values of the biovermiculations (delta (super 13) C = -29 ppm to -24 ppm, and delta (super 15) N = -2 ppm to 4 ppm) suggest that the nitrogen source for these communities is from atmospheric nitrogen and not from any ammonia present in the cave system. Sarbu, S. M., Kane, T. C., & Kinkle, B. K. (1996). A chemoautotrophically based cave ecosystem. Science, 272(5270), 1953. Jones, D. S., Lyon, E. H., & Macalady, J. L. (2008). Geomicrobiology of biovermiculations from the Frasassi cave system, Italy. Journal of Cave and Karst Studies, 70(2), 78-93. JF - Abstracts with Programs - Geological Society of America AU - Fuentes, Javier A AU - Stern, Jennifer C AU - Rosales-Lagarde, Laura AU - Boston, Penelope J AU - Gomez-Cruz, Rodolfo AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 726 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 23:Geomorphology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1797532320?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=delta+%28super+15%29+N+of+biovermiculations+in+a+sulfidic+cave+system+at+Cueva+de+Villa+Luz%2C+Tabasco%2C+Mexico&rft.au=Fuentes%2C+Javier+A%3BStern%2C+Jennifer+C%3BRosales-Lagarde%2C+Laura%3BBoston%2C+Penelope+J%3BGomez-Cruz%2C+Rodolfo%3BAnonymous&rft.aulast=Fuentes&rft.aufirst=Javier&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=726&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - Number of references - 2 N1 - PubXState - CO N1 - Last updated - 2016-06-17 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Gap analysis of land topography data derived from satellite imagery for Project Good Earth AN - 1797532304; 2016-050499 AB - The implementation of the Center for Advancement of Science in Space (CASIS)'s Project Good Earth requires a gap analysis of the current use of remote sensing instrumentation for humanitarian applications, such as natural disaster hazard identification and management, as well as disaster relief and recovery. A synthesized list of current and planned satellite-based remote sensing instruments capable of producing land topographic datasets has been developed. The list highlights the instruments' applicability to humanitarian mass movement analysis and the individual assets and shortcomings of each instrument. Mass movements are colossally destructive, gravity driven, currents of geologic material, such as landslides, lahars, etc. Existing mass movement model accuracy is restricted by the availability and spatial resolution of digital elevation models (DEM). By testing the best available satellite-derived DEM in a realistic hazard assessment scenario and comparing the results against a 1 meter airborne Light Detection and Ranging (LiDAR)-derived DEM, the accuracy of the satellite data can be assessed against an ideal DEM for mapping a potential large-scale mass movement event. The utilization of land topography data for mass movement hazards identification, management, and response, is one part of the overall project which will aid CASIS proposal analysis boards in deciding which remote sensing innovations to support on the International Space Station in order to best serve humanity. JF - Abstracts with Programs - Geological Society of America AU - Cauley, Christina N AU - Jedlovec, Gary J AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 723 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 20:Applied geophysics KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1797532304?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Gap+analysis+of+land+topography+data+derived+from+satellite+imagery+for+Project+Good+Earth&rft.au=Cauley%2C+Christina+N%3BJedlovec%2C+Gary+J%3BAnonymous&rft.aulast=Cauley&rft.aufirst=Christina&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=723&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-06-17 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Striking graphite bearing clasts found in two ordinary chondrite samples; NWA6169 and NWA8330 AN - 1797531993; 2016-050390 AB - Meteorites play an integral role in understanding the history of the solar system. Not only can they contain some of the oldest material found in the solar system they also can contain material that is unique. Many lithologies are only found as foreign clasts within distinctly different host meteorites. In this investigation two foreign clasts within the meteorites, NWA6169 and NWA8330 were studied. The purpose of this investigation was to examine the mineralogy and petrography of the clasts within the samples. From there an identification and possible origin were to be inferred. NWA6169 is an unclassified ordinary chondrite that has a presumed petrologic type of L3. NWA8330 is a classified ordinary chondrite that has a petrologic type of LL3. Both meteorites were found to contain clasts that were similar; both modally were comprised of about 5% acicular graphite. Through SEM and Raman Spectroscopy it was found that they contained olivine, pyroxene, plagioclase, Fe-Ni sulfides, graphite, and metals. They were found to portray an igneous texture with relationships that suggest concurrent growth. Analytical microprobe results for NWA6169 revealed mineral compositions of Fa31-34, Fs23-83, and Ab7-85. For NWA8330 these were Fa28-32, Fs10-24, and Ab4-83. Only one similar material has been reported, in the L3 chondrite Krymka (Semenenko & Girich, 1995). The clast they described exhibited similar mineralogies including the unusual graphite. Krymka data displayed compositional values of Fa28.5-35.0 and Fs9-25.9. These ranges are fairly similar to that of NWA6169 and NWA8330. These samples may all be melt clasts, probably of impact origin. Two possibilities are (1) impact of a C-type asteroid onto the L chondrite parent asteroid, and (2) a piece of proto-earth ejected from the moon-forming collision event. These possibilities present abundant questions, and can be tested. The measurement of oxygen isotope compositions from the clasts should reveal the original source of the melt clasts. It may also be possible to perform Ar dating of the plagioclase present. Former analyses are now being performed. We thank the NASA Cosmochemistry program for support. JF - Abstracts with Programs - Geological Society of America AU - Johnson, Jessica M AU - Zolensky, Michael AU - Chan, Queenie AU - Kring, David A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 537 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1797531993?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Striking+graphite+bearing+clasts+found+in+two+ordinary+chondrite+samples%3B+NWA6169+and+NWA8330&rft.au=Johnson%2C+Jessica+M%3BZolensky%2C+Michael%3BChan%2C+Queenie%3BKring%2C+David+A%3BAnonymous&rft.aulast=Johnson&rft.aufirst=Jessica&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=537&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-06-17 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Nanoscale element mapping and XANES spectroscopy of interplanetary dust particles AN - 1793208140; 2016-048570 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Flynn, George J AU - Wirick, Sue AU - Keller, Lindsay P AU - Kaulich, Burkhard AU - Araki, Tohru AU - Abyaneh, Majid AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 923 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - oxygen KW - minor elements KW - grain size KW - interplanetary dust KW - X-ray spectra KW - iron KW - nitrogen KW - XANES spectra KW - absorption KW - cosmic dust KW - major elements KW - metals KW - carbon KW - X-ray fluorescence spectra KW - spectra KW - instruments KW - image analysis KW - 04:Extraterrestrial geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1793208140?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Nanoscale+element+mapping+and+XANES+spectroscopy+of+interplanetary+dust+particles&rft.au=Flynn%2C+George+J%3BWirick%2C+Sue%3BKeller%2C+Lindsay+P%3BKaulich%2C+Burkhard%3BAraki%2C+Tohru%3BAbyaneh%2C+Majid%3BAnonymous&rft.aulast=Flynn&rft.aufirst=George&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=923&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/923.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt conference 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Document feature - illus. N1 - Last updated - 2016-06-02 N1 - SubjectsTermNotLitGenreText - absorption; carbon; cosmic dust; grain size; image analysis; instruments; interplanetary dust; iron; major elements; metals; minor elements; nitrogen; oxygen; spectra; X-ray fluorescence spectra; X-ray spectra; XANES spectra ER - TY - JOUR T1 - Sorting out the variety of precipitation datasets AN - 1793208057; 2016-048957 AB - For the non-expert user, the variety of precipitation datasets can be confusing. The range of publicly available, quasi-global, long-term precipitation data sets is summarized, based on the International Precipitation Working Group listing of such data sets at http://www.isac.cnr.it/ approximately ipwg/data/datasets.html. One important concept is the distinction between a Climate Data Record (CDR) and a High-Resolution Precipitation Product (HRPP). The CDR emphasizes homogeneity over time, while the HRPP focuses on providing the best snapshot quality, although each strives for the other goal as well. The poster also summarizes specific precipitation products for which the author has responsibilities as examples of these data sets. The Global Precipitation Climatology Project suite of products is a state-of-the-art example of CDR precipitation data sets. The Tropical Rainfall Measuring Mission (TRMM) Multi-satellite Precipitation Analysis is a mature HRPP, while the successor Integrated Multi-satellitE Retrievals for the Global Precipitation Measurement (GPM) mission (IMERG) is being developed currently. Although still in its first version, IMERG provides 0.1 degrees X0.1 degrees half-hourly data that are competitive with other modern HRPP's. It provides successive runs at 6 hours, 16 hours, and 3.5 months after observation time, referred to as the Early, Late, and Final Runs, respectively over the latitude band 60 degrees N-S, for the period March 2014 to the present. In Spring 2016 IMERG will be retrospectively processed for the GPM era with fully GPM-based calibrations. Then, in early 2017 IMERG will be extended to cover the period 1998 to the present, and later expanded to fully global. One of the key goals in the joint NASA-Japan Aerospace Exploration Agency GPM mission is to facilitate use of the precipitation data in applications by non-expert users. All of the products described are freely available, with access summarized at http://pmm.nasa.gov/ under the "get data" button. JF - Abstracts with Programs - Geological Society of America AU - Huffman, George J AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 749 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1793208057?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Sorting+out+the+variety+of+precipitation+datasets&rft.au=Huffman%2C+George+J%3BAnonymous&rft.aulast=Huffman&rft.aufirst=George&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=749&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-06-02 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Reuse and recycling; resource allocation by cyanobacteria in microbial mats AN - 1793207321; 2016-046109 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Stuart, Rhona K AU - Mayali, X AU - Lee, J Z AU - Everroad, R C AU - Lipton, M AU - Boaro, A AU - Bebout, B M AU - Pett-Ridge, J AU - Weber, P K AU - Thelen, M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 3012 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - United States KW - cyanobacteria KW - extracellular polymeric substances KW - biogenic structures KW - biochemistry KW - matrix KW - mass spectra KW - microbial mats KW - bioavailability KW - nitrogen KW - geochemical cycle KW - adaptation KW - California KW - organic compounds KW - Monterey Bay KW - carbon KW - Elkhorn Slough KW - composition KW - spectra KW - carbon cycle KW - sedimentary structures KW - proteins KW - hypersaline environment KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1793207321?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Reuse+and+recycling%3B+resource+allocation+by+cyanobacteria+in+microbial+mats&rft.au=Stuart%2C+Rhona+K%3BMayali%2C+X%3BLee%2C+J+Z%3BEverroad%2C+R+C%3BLipton%2C+M%3BBoaro%2C+A%3BBebout%2C+B+M%3BPett-Ridge%2C+J%3BWeber%2C+P+K%3BThelen%2C+M%3BAnonymous&rft.aulast=Stuart&rft.aufirst=Rhona&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=3012&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/3012.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt conference 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Last updated - 2016-06-02 N1 - SubjectsTermNotLitGenreText - adaptation; bioavailability; biochemistry; biogenic structures; California; carbon; carbon cycle; composition; cyanobacteria; Elkhorn Slough; extracellular polymeric substances; geochemical cycle; hypersaline environment; mass spectra; matrix; microbial mats; Monterey Bay; nitrogen; organic compounds; proteins; sedimentary structures; spectra; United States ER - TY - JOUR T1 - Mineralogy of the Dillinger Sandstone, Kimberley area, Gale Crater, Mars AN - 1793207033; 2016-048815 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Treiman, Allan H AU - Bish, D AU - Ming, Douglas W AU - Rampe, Elizabeth B AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 3168 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - silicates KW - pigeonite KW - alteration KW - volcanic rocks KW - X-ray diffraction data KW - sanidine KW - igneous rocks KW - augite KW - Kimberley KW - Windjana KW - olivine group KW - Mars KW - Bradbury Rise KW - Gale Crater KW - pyroxene group KW - clinopyroxene KW - alkali feldspar KW - olivine KW - Curiosity Rover KW - basalts KW - orthosilicates KW - oxides KW - framework silicates KW - pyrrhotite KW - chain silicates KW - amorphous materials KW - terrestrial planets KW - nesosilicates KW - planets KW - diagenesis KW - Mars Science Laboratory KW - sheet silicates KW - orthopyroxene KW - Dillinger Sandstone KW - sulfides KW - feldspar group KW - magnetite KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1793207033?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Mineralogy+of+the+Dillinger+Sandstone%2C+Kimberley+area%2C+Gale+Crater%2C+Mars&rft.au=Treiman%2C+Allan+H%3BBish%2C+D%3BMing%2C+Douglas+W%3BRampe%2C+Elizabeth+B%3BAnonymous&rft.aulast=Treiman&rft.aufirst=Allan&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=3168&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/3168.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt conference 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 1 N1 - Last updated - 2016-06-02 N1 - SubjectsTermNotLitGenreText - alkali feldspar; alteration; amorphous materials; augite; basalts; Bradbury Rise; chain silicates; clinopyroxene; Curiosity Rover; diagenesis; Dillinger Sandstone; feldspar group; framework silicates; Gale Crater; igneous rocks; Kimberley; magnetite; Mars; Mars Science Laboratory; nesosilicates; olivine; olivine group; orthopyroxene; orthosilicates; oxides; pigeonite; planets; pyroxene group; pyrrhotite; sanidine; sheet silicates; silicates; sulfides; terrestrial planets; volcanic rocks; Windjana; X-ray diffraction data ER - TY - JOUR T1 - Experimental study of carboxylic acid oxidation under Martian conditions; chemical and isotope characterization AN - 1793204935; 2016-048609 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Fu, Q AU - Locke, D R AU - Niles, P B AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 962 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - isotope fractionation KW - stony meteorites KW - isotopes KW - Mars KW - stable isotopes KW - carbon dioxide KW - meteorites KW - acetic acid KW - chemical reactions KW - carbon KW - carboxylic acids KW - oxides KW - chondrites KW - experimental studies KW - time series analysis KW - oxidation KW - statistical analysis KW - carbonaceous chondrites KW - terrestrial planets KW - planets KW - organic compounds KW - organic acids KW - metals KW - nickel KW - C-13 KW - magnetite KW - 04:Extraterrestrial geology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1793204935?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Experimental+study+of+carboxylic+acid+oxidation+under+Martian+conditions%3B+chemical+and+isotope+characterization&rft.au=Fu%2C+Q%3BLocke%2C+D+R%3BNiles%2C+P+B%3BAnonymous&rft.aulast=Fu&rft.aufirst=Q&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=962&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/962.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt conference 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Last updated - 2016-06-02 N1 - SubjectsTermNotLitGenreText - acetic acid; C-13; carbon; carbon dioxide; carbonaceous chondrites; carboxylic acids; chemical reactions; chondrites; experimental studies; isotope fractionation; isotopes; magnetite; Mars; metals; meteorites; nickel; organic acids; organic compounds; oxidation; oxides; planets; stable isotopes; statistical analysis; stony meteorites; terrestrial planets; time series analysis ER - TY - JOUR T1 - Complex microbial ecosystems recorded in sulfur and oxygen isotopes of carbonate associated sulfate in the Monterey Formation, California, U. S. A. AN - 1793204911; 2016-048756 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Theiling, Bethany P AU - Coleman, Max AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 3109 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - United States KW - sulfuric acid KW - sea water KW - oxygen KW - isotopes KW - ecosystems KW - stable isotopes KW - iron KW - Cenozoic KW - California KW - Monterey Formation KW - calcium carbonate KW - reduction KW - inorganic acids KW - sulfates KW - isotope ratios KW - oxidation KW - hydrogen sulfide KW - phosphates KW - O-18/O-16 KW - Miocene KW - Tertiary KW - S-34/S-32 KW - Neogene KW - metals KW - bacteria KW - O-18 KW - sulfur KW - pyrite KW - sulfides KW - carbonates KW - 12:Stratigraphy KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1793204911?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Complex+microbial+ecosystems+recorded+in+sulfur+and+oxygen+isotopes+of+carbonate+associated+sulfate+in+the+Monterey+Formation%2C+California%2C+U.+S.+A.&rft.au=Theiling%2C+Bethany+P%3BColeman%2C+Max%3BAnonymous&rft.aulast=Theiling&rft.aufirst=Bethany&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=3109&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/3109.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt conference 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 2 N1 - Last updated - 2016-06-02 N1 - SubjectsTermNotLitGenreText - bacteria; calcium carbonate; California; carbonates; Cenozoic; ecosystems; hydrogen sulfide; inorganic acids; iron; isotope ratios; isotopes; metals; Miocene; Monterey Formation; Neogene; O-18; O-18/O-16; oxidation; oxygen; phosphates; pyrite; reduction; S-34/S-32; sea water; stable isotopes; sulfates; sulfides; sulfur; sulfuric acid; Tertiary; United States ER - TY - JOUR T1 - Role of Saharan air layer in tropical storm; a NU-WRF simulation of a HS3 event AN - 1793203215; 2016-046174 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Tao, Zhining AU - Shi, Jainn J AU - Braun, Scott AU - Chin, Mian AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 3077 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - tropical environment KW - clastic sediments KW - atmosphere KW - simulation KW - environmental effects KW - Hurricane and Severe Storm Sentinel Mission KW - transport KW - dust KW - sediments KW - Africa KW - aerosols KW - Sahara KW - air KW - storms KW - wind transport KW - airborne methods KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1793203215?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Role+of+Saharan+air+layer+in+tropical+storm%3B+a+NU-WRF+simulation+of+a+HS3+event&rft.au=Tao%2C+Zhining%3BShi%2C+Jainn+J%3BBraun%2C+Scott%3BChin%2C+Mian%3BAnonymous&rft.aulast=Tao&rft.aufirst=Zhining&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=3077&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/3077.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt conference 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Last updated - 2016-08-18 N1 - SubjectsTermNotLitGenreText - aerosols; Africa; air; airborne methods; atmosphere; clastic sediments; dust; environmental effects; Hurricane and Severe Storm Sentinel Mission; Sahara; sediments; simulation; storms; transport; tropical environment; wind transport ER - TY - JOUR T1 - Lunar proton albedo anomalies; soil, surveyors, and statistics AN - 1789754574; 2016-039548 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Wilson, J K AU - Schwadron, N AU - Spence, H E AU - Case, A W AU - Jordan, A P AU - Looper, M D AU - Petro, N E AU - Robinson, M S AU - Stubbs, T J AU - Zeitlin, C AU - Blake, J B AU - Kasper, J AU - Mazur, J E AU - Smith, S S AU - Townsend, L W AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2229 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - albedo KW - galactic cosmic rays KW - CRaTER instrument KW - Moon KW - Lunar Reconnaissance Orbiter KW - statistical analysis KW - mapping KW - anomalies KW - protons KW - lunar highlands KW - maria KW - Cosmic Ray Telescope for the Effects of Radiation KW - neutrons KW - gamma rays KW - surveys KW - cosmic rays KW - spallation KW - regolith KW - lunar soils KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789754574?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Lunar+proton+albedo+anomalies%3B+soil%2C+surveyors%2C+and+statistics&rft.au=Wilson%2C+J+K%3BSchwadron%2C+N%3BSpence%2C+H+E%3BCase%2C+A+W%3BJordan%2C+A+P%3BLooper%2C+M+D%3BPetro%2C+N+E%3BRobinson%2C+M+S%3BStubbs%2C+T+J%3BZeitlin%2C+C%3BBlake%2C+J+B%3BKasper%2C+J%3BMazur%2C+J+E%3BSmith%2C+S+S%3BTownsend%2C+L+W%3BAnonymous&rft.aulast=Wilson&rft.aufirst=J&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/2229.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 5, 2015 N1 - Last updated - 2016-05-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - albedo; anomalies; Cosmic Ray Telescope for the Effects of Radiation; cosmic rays; CRaTER instrument; galactic cosmic rays; gamma rays; lunar highlands; Lunar Reconnaissance Orbiter; lunar soils; mapping; maria; Moon; neutrons; protons; regolith; spallation; statistical analysis; surveys ER - TY - JOUR T1 - Experiments on lunar core composition; phase equilibrium analysis of a multi-element (Fe-Ni-S-C) system AN - 1789754404; 2016-039585 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Go, B M AU - Righter, K AU - Danielson, L AU - Pando, K AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2285 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - liquid phase KW - lunar core KW - experimental studies KW - pressure KW - Moon KW - dynamos KW - siderophile elements KW - thermal history KW - high pressure KW - iron KW - temperature KW - solid phase KW - phase equilibria KW - metals KW - carbon KW - nickel KW - composition KW - sulfur KW - core KW - anvil cells KW - high temperature KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789754404?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Experiments+on+lunar+core+composition%3B+phase+equilibrium+analysis+of+a+multi-element+%28Fe-Ni-S-C%29+system&rft.au=Go%2C+B+M%3BRighter%2C+K%3BDanielson%2C+L%3BPando%2C+K%3BAnonymous&rft.aulast=Go&rft.aufirst=B&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/2285.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 20 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on Aug. 24, 2015 N1 - Last updated - 2016-05-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - anvil cells; carbon; composition; core; dynamos; experimental studies; high pressure; high temperature; iron; liquid phase; lunar core; metals; Moon; nickel; phase equilibria; pressure; siderophile elements; solid phase; sulfur; temperature; thermal history ER - TY - JOUR T1 - Cross calibration of GCR spectrum, orbital and in-situ planetary neutron detections by Monte Carlo simulations; revisiting Apollo 17 LPNE measurement AN - 1789754273; 2016-039604 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Murray, Joseph AU - Su, Jao Jang AU - Sagdeev, Roald AU - Chin, Gordon AU - McClanahan, T AU - Livengood, T AU - Starr, R D AU - Evans, L G AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1600 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - in situ KW - Moon KW - Lunar Reconnaissance Orbiter KW - Monte Carlo analysis KW - statistical analysis KW - LEND instrument KW - Lunar Exploration Neutron Detector KW - calibration KW - Apollo Program KW - simulation KW - volatiles KW - detection KW - neutrons KW - cosmic rays KW - orbital observations KW - Apollo 17 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789754273?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Cross+calibration+of+GCR+spectrum%2C+orbital+and+in-situ+planetary+neutron+detections+by+Monte+Carlo+simulations%3B+revisiting+Apollo+17+LPNE+measurement&rft.au=Murray%2C+Joseph%3BSu%2C+Jao+Jang%3BSagdeev%2C+Roald%3BChin%2C+Gordon%3BMcClanahan%2C+T%3BLivengood%2C+T%3BStarr%2C+R+D%3BEvans%2C+L+G%3BAnonymous&rft.aulast=Murray&rft.aufirst=Joseph&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/1600.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 10 N1 - PubXState - TX N1 - SuppNotes - Accessed on Aug. 31, 2015 N1 - Last updated - 2016-05-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Apollo 17; Apollo Program; calibration; cosmic rays; detection; in situ; LEND instrument; Lunar Exploration Neutron Detector; Lunar Reconnaissance Orbiter; Monte Carlo analysis; Moon; neutrons; orbital observations; simulation; statistical analysis; volatiles ER - TY - JOUR T1 - The second extended science mission for the Lunar Reconnaissance Orbiter; status, science goals, and data deliveries AN - 1789753474; 2016-039570 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Petro, Noah E AU - Keller, John W AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2278 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - LAMP instrument KW - Lunar Reconnaissance Orbiter KW - Lunar Reconnaissance Orbiter Camera KW - Mini-RF KW - mapping KW - meteoroids KW - exosphere KW - Miniature Radio-Frequency instrument KW - transport KW - mosaics KW - data bases KW - orbital observations KW - Planetary Data System KW - programs KW - Moon KW - surface textures KW - impacts KW - terrestrial planets KW - planets KW - volatiles KW - Lyman Alpha Mapping Project instrument KW - planetary interiors KW - regolith KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789753474?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=The+second+extended+science+mission+for+the+Lunar+Reconnaissance+Orbiter%3B+status%2C+science+goals%2C+and+data+deliveries&rft.au=Petro%2C+Noah+E%3BKeller%2C+John+W%3BAnonymous&rft.aulast=Petro&rft.aufirst=Noah&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/2278.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 4 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on Aug. 18, 2015 N1 - Last updated - 2016-08-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - data bases; exosphere; impacts; instruments; LAMP instrument; Lunar Reconnaissance Orbiter; Lunar Reconnaissance Orbiter Camera; Lyman Alpha Mapping Project instrument; mapping; meteoroids; Mini-RF; Miniature Radio-Frequency instrument; Moon; mosaics; orbital observations; Planetary Data System; planetary interiors; planets; programs; regolith; surface textures; terrestrial planets; transport; volatiles ER - TY - JOUR T1 - Observation of lunar neutron albedo during solar cycle 24 using LEND data AN - 1789752834; 2016-039551 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Sanin, A B AU - Mitrofanov, I G AU - Litvak, M L AU - Bodnarik, J G AU - Boynton, W V AU - Chin, G AU - Evans, L G AU - Golovin, D V AU - Harshman, K AU - Livengood, T A AU - Malakhov, A V AU - Mokrousov, M I AU - McClanahan, T P AU - Sagdeev, R Z AU - Starr, R D AU - Vostrukhin, A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1925 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - albedo KW - neutron albedo KW - galactic cosmic rays KW - McMurdo Station KW - Lunar Reconnaissance Orbiter KW - International Space Station KW - Mars KW - Ross Island KW - magnetic field KW - background radiation KW - Sun KW - cosmic rays KW - orbital observations KW - solar activity KW - Board Telescope of Neutrons KW - monitoring KW - Earth KW - High Energy Neutron Detector KW - Moon KW - atmosphere KW - Lunar Exploration Neutron Detector KW - Mars Odyssey KW - terrestrial planets KW - planets KW - Antarctica KW - neutrons KW - solar cycles KW - regolith KW - 04:Extraterrestrial geology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789752834?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Observation+of+lunar+neutron+albedo+during+solar+cycle+24+using+LEND+data&rft.au=Sanin%2C+A+B%3BMitrofanov%2C+I+G%3BLitvak%2C+M+L%3BBodnarik%2C+J+G%3BBoynton%2C+W+V%3BChin%2C+G%3BEvans%2C+L+G%3BGolovin%2C+D+V%3BHarshman%2C+K%3BLivengood%2C+T+A%3BMalakhov%2C+A+V%3BMokrousov%2C+M+I%3BMcClanahan%2C+T+P%3BSagdeev%2C+R+Z%3BStarr%2C+R+D%3BVostrukhin%2C+A%3BAnonymous&rft.aulast=Sanin&rft.aufirst=A&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/1925.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 6 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 7, 2015 N1 - Last updated - 2016-05-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - albedo; Antarctica; atmosphere; background radiation; Board Telescope of Neutrons; cosmic rays; Earth; galactic cosmic rays; High Energy Neutron Detector; International Space Station; Lunar Exploration Neutron Detector; Lunar Reconnaissance Orbiter; magnetic field; Mars; Mars Odyssey; McMurdo Station; monitoring; Moon; neutron albedo; neutrons; orbital observations; planets; regolith; Ross Island; solar activity; solar cycles; Sun; terrestrial planets ER - TY - JOUR T1 - Status of the restoration of Apollo data by the lunar data project/PDS lunar data node AN - 1784738181; 2016-035587 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Williams, David R AU - Hills, H Kent AU - Taylor, Patrick T AU - Grayzeck, Edwin J AU - Guinness, Edward A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2101 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - Moon KW - data processing KW - data bases KW - Apollo Program KW - Apollo Lunar Surface Experiments Package KW - Apollo 12 KW - Apollo 15 KW - Apollo 14 KW - ALSEP KW - Planetary Data System KW - Apollo 17 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1784738181?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Status+of+the+restoration+of+Apollo+data+by+the+lunar+data+project%2FPDS+lunar+data+node&rft.au=Williams%2C+David+R%3BHills%2C+H+Kent%3BTaylor%2C+Patrick+T%3BGrayzeck%2C+Edwin+J%3BGuinness%2C+Edward+A%3BAnonymous&rft.aulast=Williams&rft.aufirst=David&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/2101.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - PubXState - TX N1 - SuppNotes - Accessed on Sept. 25, 2015 N1 - Last updated - 2016-08-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - ALSEP; Apollo 12; Apollo 14; Apollo 15; Apollo 17; Apollo Lunar Surface Experiments Package; Apollo Program; data bases; data processing; Moon; Planetary Data System ER - TY - JOUR T1 - Restoration of the Apollo heat flow experiments metadata AN - 1784737968; 2016-035588 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Nagihara, Seiichi AU - Stephens, M K AU - Taylor, Patrick T AU - Williams, David R AU - Hills, H K AU - Nakamura, Y AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1243 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - experimental studies KW - Moon KW - data processing KW - Apollo Program KW - Apollo Lunar Surface Experiments Package KW - landing sites KW - depth KW - temperature KW - heat flow KW - geothermal gradient KW - drilling KW - Apollo 15 KW - ALSEP KW - regolith KW - Apollo 17 KW - metadata KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1784737968?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Restoration+of+the+Apollo+heat+flow+experiments+metadata&rft.au=Nagihara%2C+Seiichi%3BStephens%2C+M+K%3BTaylor%2C+Patrick+T%3BWilliams%2C+David+R%3BHills%2C+H+K%3BNakamura%2C+Y%3BAnonymous&rft.aulast=Nagihara&rft.aufirst=Seiichi&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/1243.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 10 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Sept. 25, 2015 N1 - Last updated - 2016-04-28 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - ALSEP; Apollo 15; Apollo 17; Apollo Lunar Surface Experiments Package; Apollo Program; data processing; depth; drilling; experimental studies; geothermal gradient; heat flow; landing sites; metadata; Moon; regolith; temperature ER - TY - JOUR T1 - The oxygen isotope composition of dark inclusions in HEDs, ordinary and carbonaceous chondrites AN - 1784737933; 2016-035565 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Greenwood, R C AU - Zolensky, M E AU - Buchanan, P C AU - Franchi, I A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2975 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - silicates KW - Northwest Africa Meteorites KW - ordinary chondrites KW - stony meteorites KW - oxygen KW - isotopes KW - olivine group KW - CV chondrites KW - Allende Meteorite KW - NWA 2364 KW - meteorites KW - Scott Glacier Meteorites KW - howardite KW - olivine KW - inclusions KW - Sharps Meteorite KW - orthosilicates KW - dark inclusions KW - chondrites KW - SCO 06040 KW - parent bodies KW - matrix KW - HED meteorites KW - thermal metamorphism KW - H chondrites KW - carbonaceous chondrites KW - metamorphism KW - achondrites KW - PRA 04401 KW - NWA 2140 KW - nesosilicates KW - aqueous alteration KW - chondrules KW - Mount Pratt Meteorites KW - sheet silicates KW - dehydration KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1784737933?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=The+oxygen+isotope+composition+of+dark+inclusions+in+HEDs%2C+ordinary+and+carbonaceous+chondrites&rft.au=Greenwood%2C+R+C%3BZolensky%2C+M+E%3BBuchanan%2C+P+C%3BFranchi%2C+I+A%3BAnonymous&rft.aulast=Greenwood&rft.aufirst=R&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/2975.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 17 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Sept. 9, 2015 N1 - Last updated - 2016-04-28 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; Allende Meteorite; aqueous alteration; carbonaceous chondrites; chondrites; chondrules; CV chondrites; dark inclusions; dehydration; H chondrites; HED meteorites; howardite; inclusions; isotopes; matrix; metamorphism; meteorites; Mount Pratt Meteorites; nesosilicates; Northwest Africa Meteorites; NWA 2140; NWA 2364; olivine; olivine group; ordinary chondrites; orthosilicates; oxygen; parent bodies; PRA 04401; SCO 06040; Scott Glacier Meteorites; Sharps Meteorite; sheet silicates; silicates; stony meteorites; thermal metamorphism ER - TY - JOUR T1 - Photogrammetric control and mosaicking of Apollo 15 Panoramic Camera images AN - 1784737910; 2016-035593 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Edmundson, Kenneth L AU - Anderson, J A AU - Archinal, Brent A AU - Becker, T L AU - Nefian, A V AU - Robinson, M S AU - Thomas, O H AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1350 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - imagery KW - Moon KW - cartography KW - mapping KW - Apollo Program KW - photogrammetry KW - geodesy KW - digital cartography KW - mosaics KW - data integration KW - Integrated Software for Imagers and Spectrometers KW - Panoramic Camera KW - Apollo 15 KW - cameras KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1784737910?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Photogrammetric+control+and+mosaicking+of+Apollo+15+Panoramic+Camera+images&rft.au=Edmundson%2C+Kenneth+L%3BAnderson%2C+J+A%3BArchinal%2C+Brent+A%3BBecker%2C+T+L%3BNefian%2C+A+V%3BRobinson%2C+M+S%3BThomas%2C+O+H%3BAnonymous&rft.aulast=Edmundson&rft.aufirst=Kenneth&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/1350.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 17 N1 - PubXState - TX N1 - Document feature - illus. incl. sketch map N1 - SuppNotes - Accessed on Sept. 28, 2015 N1 - Last updated - 2016-04-28 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Apollo 15; Apollo Program; cameras; cartography; data integration; digital cartography; geodesy; imagery; Integrated Software for Imagers and Spectrometers; mapping; Moon; mosaics; Panoramic Camera; photogrammetry ER - TY - JOUR T1 - Methods of validating the soil moisture active passive (SMAP) mission using USDA-ARS experimental watersheds AN - 1784737515; 2016-037743 AB - The Soil Moisture Active Passive mission (SMAP) provides a global soil moisture product on a 36 km resolution for the near surface. This mission relies upon an international cooperative of in situ networks to provide ground truth references across a variety of landscapes. The USDA Agricultural Research Service operates several experimental watersheds as part of this project with distributed soil moisture networks, measuring soil moisture at a variety of depths including the 5 cm depth, which is critical for satellite validation. Comparisons of the in situ network estimates to the satellite products are ongoing, but initial results have shown a good correspondence between satellite estimates and the in situ soil moisture resources, once scaling functions are applied. The scaling methodologies for the in situ networks are reviewed. JF - Abstracts with Programs - Geological Society of America AU - Cosh, Michael AU - Jackson, Thomas AU - Bindlish, Rajat AU - Colliander, Andreas AU - Chan, Steven AU - Das, Narendra AU - Yueh, Simon AU - Bosch, David AU - Goodrich, David AU - Prueger, John H AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 507 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1784737515?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Methods+of+validating+the+soil+moisture+active+passive+%28SMAP%29+mission+using+USDA-ARS+experimental+watersheds&rft.au=Cosh%2C+Michael%3BJackson%2C+Thomas%3BBindlish%2C+Rajat%3BColliander%2C+Andreas%3BChan%2C+Steven%3BDas%2C+Narendra%3BYueh%2C+Simon%3BBosch%2C+David%3BGoodrich%2C+David%3BPrueger%2C+John+H%3BAnonymous&rft.aulast=Cosh&rft.aufirst=Michael&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=507&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-04-28 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Monitoring terrestrial water variations from space using GRACE AN - 1784737490; 2016-037744 AB - Groundwater is both a vital resource and a useful indicator of hydroclimatic variability. Soil moisture is the primary source of water available to plants, and it also affects atmospheric processes through its control of evapotranspiration. In the United States, groundwater storage and soil moisture are somewhat well monitored, and measurement records are freely and easily accessible. Outside of the U.S., hydrological variables are often not monitored systematically, and even where they are the data are rarely centralized and publicly available. Since 2002 NASA's Gravity Recovery and Climate Experiment (GRACE) satellite mission has delivered gravity field observations which have been used to infer variations in total terrestrial water storage (the sum of groundwater, soil moisture, snow and ice, and surface waters) at regional to continental scales. Challenges to using GRACE for hydrology include its relatively coarse spatial and temporal resolutions, its inability to differentiate the terrestrial water storage components, and typical 2-4 month data latency. In this presentation I will describe progress to date on overcoming these challenges and applying GRACE, together with other observations and models, for quantifying groundwater depletion, monitoring droughts, and assessing flood potential in the U.S. and worldwide. JF - Abstracts with Programs - Geological Society of America AU - Rodell, Matthew AU - Li, Bailing AU - Beaudoing, Hiroko K AU - Getirana, Augusto AU - Zaitchik, Benjamin F AU - Famiglietti, James AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 507 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 21:Hydrogeology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1784737490?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Monitoring+terrestrial+water+variations+from+space+using+GRACE&rft.au=Rodell%2C+Matthew%3BLi%2C+Bailing%3BBeaudoing%2C+Hiroko+K%3BGetirana%2C+Augusto%3BZaitchik%2C+Benjamin+F%3BFamiglietti%2C+James%3BAnonymous&rft.aulast=Rodell&rft.aufirst=Matthew&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=507&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-04-28 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Study on an oscillatory micro-laminated dolomite/limestone rock and its implication on sedimentary dolomite formation AN - 1784737462; 2016-037727 AB - Forming mechanism of dolomite has been a long lasting question known as the "dolomite problem" (Hardie 1987; Machel and Mountjoy 1986; Mazzullo 2000; Warren 2000; Zenger et al. 1980). Attempts to synthesize dolomite in surface condition using oversaturated solution have been proven to be unsuccessful. Results from our lab have shown that polysaccharide be used as catalyst to synthesize disordered dolomite in room temperature (Zhang et al., 2012). Zhang et al. (2015) also point out that extracellular polymeric substances (EPS) that are dominated by polysaccharides from microorganism have catalytic effect on promoting disordered dolomite growth. The key step to form dolomite is incorporation of Mg (super 2+) ions into crystal surface. But this process is inhibited by the strong bonds between water and Mg (super 2+) on the crystal surface. Therefore, dehydration of Mg (super 2+) is essential for dolomite growth. Ordovician micro-laminate carbonate rock from Southern Appalachian was selected for understanding the relationship between microbial mat and dolomite. In-situ XRD, SEM and TEM results indicate that, the sample contains two distinctly different micro-laminae, dark layers with euhedral dolomite crystals, and bright layers dominated by calcite. Diffraction pattern from TEM and XRD shown clear (015) peak for dolomite within this sample, therefore the euhedral dolomite in this sample is ordered. Our study show that since each laminae has an average width of approximately 0.2 mm and darker layers are generally thinner than brighter layer. Higher porosity and less thickness indicate the dark layers were enrich in organic materials. Since the organic materials, which probably contains fair amount of microbial biomass during deposition, are concentrated in dark layers which catalyze dolomitization. The observed evidence in the natural sample supports preferred dolomitization and the relationship between organic material/ microbial biomass and dolomite micro-laminae. JF - Abstracts with Programs - Geological Society of America AU - Fang, Yihang AU - Xu, Huifang AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 504 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 06A:Sedimentary petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1784737462?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Study+on+an+oscillatory+micro-laminated+dolomite%2Flimestone+rock+and+its+implication+on+sedimentary+dolomite+formation&rft.au=Fang%2C+Yihang%3BXu%2C+Huifang%3BAnonymous&rft.aulast=Fang&rft.aufirst=Yihang&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=504&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-04-28 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - The roles of microbial extracellular polymeric substances in catalyzing dolomite crystallization at low-temperature AN - 1784737265; 2016-037725 AB - Sedimentary dolomite can be potential hydrocarbon reservoirs. Sedimentary dolomites or dolostones are generally abundant in the geological record, yet scarce or less common in certain geological time periods and Holocene sediments. The main factor inhibiting the nucleation and growth of dolomite is the strong hydration of the aqueous Mg (super 2+) ion. The dehydration of surface Mg (super 2+) -water complexes is the key to dolomite crystallization. Recent results from our research group indicate that disordered dolomite can precipitate and growth in normal seawater (Mg:Ca ratio ranging from 3:1 to 8:1) in presence of dissolved polysaccharides and microbial extracellular polymeric substances or exopolymeric substances (EPS). A positive relationship between concentrations of dissolved polysaccharides and microbial EPS in a solution with fixed Mg/Ca ratio and amount of Mg in the precipitated Ca-Mg-carbonates has been established. Polysaccharides are the main components in the EPS. Molecular dynamics modeling results indicate that the adsorbed polysaccharides will weaken the bonding between water molecule and surface Mg, therefore promote carbonate anion binding and dolomite crystallization. Our results from sedimentary carbonate rocks with oscillatory dolomite and limestone layers (ribbon rocks) and micro-laminations clearly demonstrate preferential dolomitization of the organic-rich (i.e., biomat-rich) carbonate layers. Molecular dynamics modeling results indicate that adsorbed polysaccharide can lower activation energy of surface water removal/dehydration. Polysaccharides associated with the carbonates sediments (calcite, high magnesian calcite, and aragonite) take very important catalytic roles in the dolomitization. The dolomitization could be penecontemporaneous process through interaction with ambient sea water in presence of the catalysts. No special "dolomitizing fluids" are required. JF - Abstracts with Programs - Geological Society of America AU - Xu, Huifang AU - Shen, Zhizhang AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 504 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 06A:Sedimentary petrology KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1784737265?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=The+roles+of+microbial+extracellular+polymeric+substances+in+catalyzing+dolomite+crystallization+at+low-temperature&rft.au=Xu%2C+Huifang%3BShen%2C+Zhizhang%3BAnonymous&rft.aulast=Xu&rft.aufirst=Huifang&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=504&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-04-28 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Petrology of anomalous eucrites AN - 1784737097; 2016-035556 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Mittlefehldt, D W AU - Peng, Z X AU - Ross, D K AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1933 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - silicates KW - magnesium KW - stony meteorites KW - igneous rocks KW - EET 87520 KW - Elephant Moraine Meteorites KW - EET 87542 KW - manganese KW - iron KW - meteorites KW - pyroxene group KW - plutonic rocks KW - mineral composition KW - cumulates KW - aluminum KW - chain silicates KW - alkaline earth metals KW - high-calcium pyroxene KW - low-calcium pyroxene KW - Asuka Meteorites KW - HED meteorites KW - anomalies KW - Asuka 881394 KW - achondrites KW - Antarctica KW - titanium KW - metals KW - petrography KW - eucrite KW - gabbros KW - exsolution KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1784737097?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Petrology+of+anomalous+eucrites&rft.au=Mittlefehldt%2C+D+W%3BPeng%2C+Z+X%3BRoss%2C+D+K%3BAnonymous&rft.aulast=Mittlefehldt&rft.aufirst=D&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/1933.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 19 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Acessed on Sept. 4, 2015 N1 - Last updated - 2016-08-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Asuka 881394; achondrites; alkaline earth metals; aluminum; anomalies; Antarctica; Asuka Meteorites; chain silicates; cumulates; EET 87520; EET 87542; Elephant Moraine Meteorites; eucrite; exsolution; gabbros; HED meteorites; high-calcium pyroxene; igneous rocks; iron; low-calcium pyroxene; magnesium; manganese; metals; meteorites; mineral composition; petrography; plutonic rocks; pyroxene group; silicates; stony meteorites; titanium ER - TY - JOUR T1 - Distinguishing impact and volcanic deposits on Mars with data from Spirit and Opportunity AN - 1784736355; 2016-037770 AB - The rovers Spirit and Opportunity have enabled the first in-situ comparative studies of martian impact and volcanic deposits. Spirit's landing site lies within the 160-km Gusev Crater. The dominant rock type there is "Adirondack-class" olivine-rich basalt, which forms plains deposits that cover much of the Gusev floor and is interpreted as volcanic in origin. Opportunity's landing site is dominated by flat-lying sedimentary rocks rich in sulfate salts and hematite-rich diagenetic concretions. Both sites have small impact craters; ejecta deposits from these craters have been extensively studied. At the Spirit site the Columbia Hills predate the Adirondack basalts and contain very ancient moderately to poorly sorted clastic deposits. Based on texture alone, these could be interpreted as either pyroclastic volcanic deposits or distal impact ejecta from a distant crater. In a few instances, observed geologic relationships provide distinctive clues; an example is the inward-dipping strata of Home Plate that point toward a pyroclastic origin. In other cases, the best information comes from geochemical clues, like Ni concentrations higher than expected for most volcanic materials but consistent with an impact origin. Opportunity has spent the past several years exploring the rim of the Noachian age approximately 22 km Endeavour Crater. Most Endeavour rim materials are impact ejecta. These include what appear to be coarse-grained lithic breccias and, more commonly, breccias with angular clasts embedded in a fine-grained matrix. In the few instances where stratigraphic relationships between breccia units can be distinguished, they mimic those at comparable-sized impact craters on Earth. Recently, Opportunity has documented local exposures of fine-grained rocks of basaltic composition on the rim of Endeavour Crater. The textures and compositions of these rocks are consistent with an extrusive volcanic origin. However, their location on the rim of a crater of Endeavour's size also permits the interpretation that they are fine-grained impact melt. JF - Abstracts with Programs - Geological Society of America AU - Squyres, Steven W AU - Young, Kelsey E AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 512 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1784736355?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Distinguishing+impact+and+volcanic+deposits+on+Mars+with+data+from+Spirit+and+Opportunity&rft.au=Squyres%2C+Steven+W%3BYoung%2C+Kelsey+E%3BAnonymous&rft.aulast=Squyres&rft.aufirst=Steven&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=512&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-04-28 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Volcanic shatter rings; a type of raised rim depression that forms over lava tubes AN - 1784736099; 2016-037774 AB - Shatter rings are raised rim depressions that form over active lava tube on Earth, and may be preserved on the volcanic plains of Mars. This has important implications for planetary exploration. These inflationary features have been linked to fluctuations in discharge. If the flux of lava through the tube exceeds the tube's cross-sectional area, lava will either break out from the tube and onto the surface, or the pressure within the tube will act to drive the roof upwards. Roof upheaval shatters the overlying crust, and repeated episodes can create a raised rim of shattered material tens of meters across, composed of blocks from the broken lava surface, that surrounds the mobile section of tube roof. Short-lived lava flows extrude from points around the exterior base of the shattered rim, forming a characteristic lava-matrix breccia and burying the surrounding lava surface. When discharge drops, or the tube is abandoned, the mobile section of tube roof drops, forming a depression often lower than the surface outside the shatter ring. Shatter ring dimensions are therefore controlled by the diameter of the tube over which they form. Shatter rings imply the presence of lava tubes and suggest that the eruption rate fluctuated. With their bowl-like depression, raised rim and surrounding radial flows, shatter rings share common features with impact craters. The volcano Olympus Mons on Mars displays raised rim depressions in association with ridges that likely are lava tubes. On Mars, lava tubes are suggested to exceed 100 m across. Impact craters of several hundred meter diameters are easily discernible in high resolution data from Mars and the Moon. Although it might seem unlikely that shatter rings would be confused with impact craters, erosion modification by aeolian, fluvial or space weathering processes might make difficult their distinction in remote sensing data. Therefore it is important to be aware of the existence and formation mechanisms for shatter rings to ensure that such features are not inadvertently included in counts of impact craters. JF - Abstracts with Programs - Geological Society of America AU - Bleacher, Jacob E AU - Orr, Tim R AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 512 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 23:Geomorphology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1784736099?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Volcanic+shatter+rings%3B+a+type+of+raised+rim+depression+that+forms+over+lava+tubes&rft.au=Bleacher%2C+Jacob+E%3BOrr%2C+Tim+R%3BAnonymous&rft.aulast=Bleacher&rft.aufirst=Jacob&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=512&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-04-28 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - The use of field portable instrumentation in the exploration of volcanic and impact terrains AN - 1784735979; 2016-037772 AB - In situ geochemical technologies, while not as highly accurate as their laboratory counterparts, represent a valuable way to test geologic hypotheses real-time during a field campaign. Depending on the geologic context, there are a variety of ways to deploy these technologies in the field to address targeted science objectives. The RIS4E (Remote, In Situ, and Synchrotron Studies for Science) SSERVI (Solar System Exploration Research Virtual Institute) team is deploying a variety of field portable instrumentation and conducting a series of tests in volcanic terrains to answer a wide array of geologic questions. For the past 2 years, the RIS4E team has been field testing on the December 1974 lava flow at Kilauea Volcano, HI. Using a combination of handheld x-ray fluorescence (hXRF), field portable x-ray diffraction (XRD), multispectral imaging, Light Detection and Ranging (LiDAR), and Ground Penetrating Radar (GPR), we are investigating lava flow emplacement, interaction between the flow and the subsurface topography, formation of alteration coatings in an acid bog environment, and high spatial resolution mapping of key elements in a hydrothermal alteration setting. Together, these technologies are capable of using varied approaches valuable in multiple geologic environments in planetary field geology. Though the RIS4E campaign focuses on volcanic environments, these same capabilities have direct applicability to impact terrains as well. They enable high spatial resolution mapping of key elements that could be used to explore and sample extensive impact melt and melt breccia environments as well as impact-induced hydrothermal deposits. In cases where samples are required for a specific purpose (i.e. samples of high K concentrations are required for future K-Ar or Ar-Ar dating) these instruments can assist the crew. All of these areas require extensive field and laboratory testing with which we can validate instrument suites and field protocols for instrument deployment. JF - Abstracts with Programs - Geological Society of America AU - Young, Kelsey AU - Bleacher, Jacob E AU - Rogers, A Deanne AU - Evans, Cynthia A AU - McAdam, Amy AU - Osinski, Gordon R AU - Garry, W Brent AU - Carter, Lynn M AU - Glotch, Timothy AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 512 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 23:Geomorphology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1784735979?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=The+use+of+field+portable+instrumentation+in+the+exploration+of+volcanic+and+impact+terrains&rft.au=Young%2C+Kelsey%3BBleacher%2C+Jacob+E%3BRogers%2C+A+Deanne%3BEvans%2C+Cynthia+A%3BMcAdam%2C+Amy%3BOsinski%2C+Gordon+R%3BGarry%2C+W+Brent%3BCarter%2C+Lynn+M%3BGlotch%2C+Timothy%3BAnonymous&rft.aulast=Young&rft.aufirst=Kelsey&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=512&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-04-28 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Surface roughness patterns in lunar South Pole-Akin Basin AN - 1784735769; 2016-037776 AB - Quantitative analysis of roughness reveals surface textures on the Moon. We use co-occurrence roughness textures, a method developed for analyzing volcanic deposits, to interrogate digital elevation models (DEMs) derived from the Lunar Reconnaissance Orbiter Camera (LROC) Narrow Angle Camera (NAC). The Bhabha Eastern Plain is located in central South Pole-Akin Basin (SPA) near ancient volcanic deposits and units that may be related to the original impact-melt generated during the formation of the basin over 4 billion years ago. To process the data, DEMs are converted to local roughness maps by fitting 6-meter planes to the surface in a grid. The standard deviation of the residuals (DEM elevations minus planer elevations) is our measure of surface roughness (i.e., a de-trended RMS roughness). Co-occurrence statistics are then used to identify patterns in roughness. Or preliminary analysis of a small (10 km2) patch of this region reveals that plains have homogenous roughness distributions as do crater floors. Fresh crater rims have increased entropy (randomness) in the roughness data while comparatively older crater rims have more homogenous roughness distributions. This indicates that over time small impacts disrupt the morphology of impact crater rims adding order to the deposits. Furthermore, circular high-entropy regions are evident in the results that are not obvious in the original meter-scale NAC data. These regions are likely impact crater rims that have been near-completely erased but retain a subtle roughness signature. These signatures are likely the result of boulder rings that at the 6 m pixel scale appear random but taken together reveal an otherwise hidden crater. This work indicates that roughness patterns, a tool developed for volcanic mapping on Earth, is a critical tool for mapping degraded impact structures on the Moon. JF - Abstracts with Programs - Geological Society of America AU - Whelley, Patrick AU - Petro, Noah AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 513 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1784735769?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Surface+roughness+patterns+in+lunar+South+Pole-Akin+Basin&rft.au=Whelley%2C+Patrick%3BPetro%2C+Noah%3BAnonymous&rft.aulast=Whelley&rft.aufirst=Patrick&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=513&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-04-28 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Eemian MIS 5e; a flash from the past...and a glimpse into the future! AN - 1780805541; 2016-032900 AB - Flash! Stratigraphic and sedimentological observations among last interglacial (LIG; MIS 5e, Eemian) carbonate landscapes in the Bahamas and Bermuda reveal a rocky climate transition late in the period. Wave-transported megaboulders, hillside runup deposits, and lowland chevron ridges provide evidence of intense storms and sustained long-period waves originating in the northeast Atlantic Ocean. This turbulent period is associated with rapid, multi-meter changes in sea level as major ice sheets melted and/or collapsed. LIG geology in the islands presents some ominous clues of potential future changes. Antarctic ice cores document that LIG atmospheric CO (sub 2) was approximately 280 ppm, while global temperature was less than 1 degrees C warmer than today's. Despite only slightly warmer conditions than pre-Industrial times, early-mid LIG sea level persisted at +2-3 m for several thousand years. Later in the LIG, sea level rose abruptly 3-5 m meters (to +6-9 m) as the cryosphere adjusted to warmer temperatures. Rapidly increasing CO (sub 2) rates (>2 ppm/yr) have surpassed 400 ppm (a Pliocene level) while global temperature increased approximately 1 degrees C since the 1870s. The Eemian reveals that major climate forcing is not required to yield major impacts on the ocean and ice caps. Climate model simulations indicate that the flood of fresh water and ocean surface cooling in the North Atlantic as well as the Southern Ocean could have increased tropospheric meridional temperature gradients, eddy kinetic energy and baroclinicity, increasing the climatological wind field and driving more powerful storms. The Southern Ocean has a major role in affecting atmospheric CO (sub 2) , as warming of the Southern Ocean drives ventilation of the deep ocean. The resulting level of CO (sub 2) in turn acts as a tight control knob on global climate. Today, ice mass losses from major global ice sheets (GIS, WAIS, and Totten/Aurora Basin (EAIS)) are growing non-linearly with doubling times on the order of 10 yr. With few controls on GHG emissions, our global society is producing a climate system that is racing forward out of humanity's control into an uncertain climate future. If we look back to understand the non-human-driven events of the LIG, some of the enormous consequences of our unchecked forward speed may come more clearly into focus (http://www.atmos-chem-phys-discuss.net/15/20059/2015/). JF - Abstracts with Programs - Geological Society of America AU - Hearty, Paul J AU - Hansen, James AU - Tselioudis, George AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 498 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1780805541?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Eemian+MIS+5e%3B+a+flash+from+the+past...and+a+glimpse+into+the+future%21&rft.au=Hearty%2C+Paul+J%3BHansen%2C+James%3BTselioudis%2C+George%3BAnonymous&rft.aulast=Hearty&rft.aufirst=Paul&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=498&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-04-14 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Evolution of the oxidation state of the Earth's mantle AN - 1780804790; 2016-034105 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Danielson, L R AU - Righter, K AU - Keller, L AU - Christoffersen, R AU - Rahman, Z AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 655 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - volcanic rocks KW - stony meteorites KW - Martian meteorites KW - igneous rocks KW - stability KW - mantle KW - iron KW - XANES spectra KW - SNC Meteorites KW - meteorites KW - ferric iron KW - basalts KW - composition KW - spectra KW - P-T conditions KW - water KW - processes KW - experimental studies KW - accretion KW - oxidation KW - electron microscopy data KW - achondrites KW - X-ray spectra KW - TEM data KW - measurement KW - models KW - shergottite KW - metals KW - anvil cells KW - 18:Solid-earth geophysics KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1780804790?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Evolution+of+the+oxidation+state+of+the+Earth%27s+mantle&rft.au=Danielson%2C+L+R%3BRighter%2C+K%3BKeller%2C+L%3BChristoffersen%2C+R%3BRahman%2C+Z%3BAnonymous&rft.aulast=Danielson&rft.aufirst=L&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=655&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/655.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 9 N1 - Last updated - 2016-04-14 N1 - SubjectsTermNotLitGenreText - accretion; achondrites; anvil cells; basalts; composition; electron microscopy data; experimental studies; ferric iron; igneous rocks; iron; mantle; Martian meteorites; measurement; metals; meteorites; models; oxidation; P-T conditions; processes; shergottite; SNC Meteorites; spectra; stability; stony meteorites; TEM data; volcanic rocks; water; X-ray spectra; XANES spectra ER - TY - JOUR T1 - Late-glacial to late-Holocene shifts in global precipitation delta (super 18) O AN - 1780804755; 2016-034238 AB - Reconstructions of Quaternary climate are often based on the isotopic content of paleo-precipitation preserved in proxy records. While many paleo-precipitation isotope records are available, few studies have synthesized these dispersed records to explore spatial patterns of late-glacial precipitation delta (super 18) O. Here we present a synthesis of 86 globally distributed groundwater (n=59), cave calcite (n=15) and ice core (n=12) isotope records spanning the late-glacial (defined as approximately 50 000 to approximately 20 000 years ago) to the late-Holocene (within the past approximately 5000 years). We show that precipitation delta (super 18) O changes from the late-glacial to the late-Holocene range from -7.1 per mil (delta (super 18) O (sub late-Holocene) >delta (super 18) O (sub late-glacial) ) to +1.7 per mil (delta (super 18) O (sub late-glacial) >delta (super 18) O (sub late-Holocene) ), with the majority (77%) of records having lower late-glacial delta (super 18) O than late-Holocene delta (super 18) O values. High-magnitude, negative precipitation delta (super 18) O shifts are common at high latitudes, high altitudes and continental interiors (delta (super 18) O (sub late-Holocene) >delta (super 18) O (sub late-glacial) by more than 3 per mil). Conversely, low-magnitude, positive precipitation delta (super 18) O shifts are concentrated along tropical and subtropical coasts (delta (super 18) O (sub late-glacial) >delta (super 18) O (sub late-Holocene) by less than 2 per mil). Broad, global patterns of late-glacial to late-Holocene precipitation delta (super 18) O shifts suggest that stronger-than-modern isotopic distillation of air masses prevailed during the late-glacial, likely impacted by larger global temperature differences between the tropics and the poles. Further, to test how well general circulation models reproduce global precipitation delta (super 18) O shifts, we compiled simulated precipitation delta (super 18) O shifts from five isotope-enabled general circulation models simulated under recent and last glacial maximum climate states. Climate simulations generally show better inter-model and model-measurement agreement in temperate regions than in the tropics, highlighting a need for further research to better understand how inter-model spread in convective rainout, seawater delta (super 18) O and glacial topography parameterizations impact simulated precipitation delta (super 18) O. Future research on paleo-precipitation delta (super 18) O records can use the global maps of measured and simulated late-glacial precipitation isotope compositions to target and prioritize field sites. JF - Climate of the Past AU - Jasechko, S AU - Lechler, A AU - Pausata, Francesco S R AU - Fawcett, P J AU - Gleeson, T AU - Cendon, D I AU - Galewsky, J AU - LeGrande, A N AU - Risi, C AU - Sharp, Z D AU - Welker, J M AU - Werner, M AU - Yoshimura, K Y1 - 2015 PY - 2015 DA - 2015 SP - 1375 EP - 1393 PB - Copernicus, Katlenburg-Lindau VL - 11 IS - 10 SN - 1814-9324, 1814-9324 KW - last glacial maximum KW - oxygen KW - isotopes KW - data KW - Europe KW - atmospheric precipitation KW - simulation KW - paleoclimatology KW - Holocene KW - stable isotopes KW - climate change KW - ground water KW - upper Pleistocene KW - modern KW - Cenozoic KW - spatial variations KW - ice KW - ground ice KW - Australia KW - historical documents KW - Southeast Asia KW - Asia KW - climate KW - speleothems KW - North America KW - meteoric water KW - general circulation models KW - ice cores KW - Quaternary KW - Australasia KW - isotope ratios KW - global KW - O-18/O-16 KW - measurement KW - models KW - South America KW - regional KW - Oceania KW - Pleistocene KW - Africa KW - upper Holocene KW - Mediterranean region KW - 24:Quaternary geology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1780804755?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Climate+of+the+Past&rft.atitle=Late-glacial+to+late-Holocene+shifts+in+global+precipitation+delta+%28super+18%29+O&rft.au=Jasechko%2C+S%3BLechler%2C+A%3BPausata%2C+Francesco+S+R%3BFawcett%2C+P+J%3BGleeson%2C+T%3BCendon%2C+D+I%3BGalewsky%2C+J%3BLeGrande%2C+A+N%3BRisi%2C+C%3BSharp%2C+Z+D%3BWelker%2C+J+M%3BWerner%2C+M%3BYoshimura%2C+K&rft.aulast=Jasechko&rft.aufirst=S&rft.date=2015-01-01&rft.volume=11&rft.issue=10&rft.spage=1375&rft.isbn=&rft.btitle=&rft.title=Climate+of+the+Past&rft.issn=18149324&rft_id=info:doi/ L2 - http://www.clim-past.net/11/1375/2015/cp-11-1375-2015.pdf http://www.climate-of-the-past.net/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from Copernicus Gesellschaft, Katlenburg-Lindau, Germany N1 - Date revised - 2016-01-01 N1 - Number of references - 209 N1 - Document feature - illus. N1 - Last updated - 2016-04-14 N1 - SubjectsTermNotLitGenreText - Africa; Asia; atmospheric precipitation; Australasia; Australia; Cenozoic; climate; climate change; data; Europe; general circulation models; global; ground ice; ground water; historical documents; Holocene; ice; ice cores; isotope ratios; isotopes; last glacial maximum; measurement; Mediterranean region; meteoric water; models; modern; North America; O-18/O-16; Oceania; oxygen; paleoclimatology; Pleistocene; Quaternary; regional; simulation; South America; Southeast Asia; spatial variations; speleothems; stable isotopes; upper Holocene; upper Pleistocene ER - TY - JOUR T1 - Mapping the Pahrump Hills outcrop using MARDI sidewalk mosaics AN - 1780803689; 2016-033849 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Minitti, M E AU - Van Beek, J AU - Garvin, J B AU - Goetz, W AU - Grotzinger, J P AU - Harker, D AU - Herkenhoff, K E AU - Kah, L C AU - Kennedy, M R AU - Krezoski, G M AU - Lipkaman, L AU - Rowland, S K AU - Schieber, J AU - Stack, K M AU - Yingst, R A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2399 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - bedrock KW - imagery KW - laminations KW - Murray Formation KW - Mars Descent Imager KW - Mars KW - mapping KW - MAHLI KW - veins KW - Pahrump Hills KW - Mars Hand Lens Imager KW - terrestrial planets KW - planets KW - fractures KW - planar bedding structures KW - mosaics KW - diagenesis KW - Curiosity Rover KW - surface features KW - Mars Science Laboratory KW - sedimentary structures KW - Mount Sharp KW - MARDI KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1780803689?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Mapping+the+Pahrump+Hills+outcrop+using+MARDI+sidewalk+mosaics&rft.au=Minitti%2C+M+E%3BVan+Beek%2C+J%3BGarvin%2C+J+B%3BGoetz%2C+W%3BGrotzinger%2C+J+P%3BHarker%2C+D%3BHerkenhoff%2C+K+E%3BKah%2C+L+C%3BKennedy%2C+M+R%3BKrezoski%2C+G+M%3BLipkaman%2C+L%3BRowland%2C+S+K%3BSchieber%2C+J%3BStack%2C+K+M%3BYingst%2C+R+A%3BAnonymous&rft.aulast=Minitti&rft.aufirst=M&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2399.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 8 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Nov. 3, 2015 N1 - Last updated - 2016-08-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - bedrock; Curiosity Rover; diagenesis; fractures; imagery; laminations; MAHLI; mapping; MARDI; Mars; Mars Descent Imager; Mars Hand Lens Imager; Mars Science Laboratory; mosaics; Mount Sharp; Murray Formation; Pahrump Hills; planar bedding structures; planets; sedimentary structures; surface features; terrestrial planets; veins ER - TY - JOUR T1 - Did periglacial lakes develop within Martian outflow channels? AN - 1780803679; 2016-033825 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Rodriguez, J Alexis P AU - Fairen, A G AU - Gulick, V C AU - Baker, V R AU - Platz, T AU - Glines, N AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2306 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - lacustrine features KW - lake-level changes KW - imagery KW - permafrost KW - mesas KW - Mars KW - landforms KW - periglacial features KW - Hesperian KW - erosion features KW - outflow channels KW - Context Camera KW - chaotic terrains KW - Simud Vallis KW - Amazonian KW - floods KW - Chryse Chaos KW - shore features KW - Mars Reconnaissance Orbiter KW - paleolakes KW - terrestrial planets KW - planets KW - Channeled Scabland KW - terrestrial comparison KW - MOLA KW - geomorphology KW - active layer KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1780803679?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Did+periglacial+lakes+develop+within+Martian+outflow+channels%3F&rft.au=Rodriguez%2C+J+Alexis+P%3BFairen%2C+A+G%3BGulick%2C+V+C%3BBaker%2C+V+R%3BPlatz%2C+T%3BGlines%2C+N%3BAnonymous&rft.aulast=Rodriguez&rft.aufirst=J+Alexis&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2306.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 9 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Oct. 26, 2015 N1 - Last updated - 2016-04-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - active layer; Amazonian; Channeled Scabland; chaotic terrains; Chryse Chaos; Context Camera; erosion features; floods; geomorphology; Hesperian; imagery; lacustrine features; lake-level changes; landforms; Mars; Mars Reconnaissance Orbiter; mesas; MOLA; outflow channels; paleolakes; periglacial features; permafrost; planets; shore features; Simud Vallis; terrestrial comparison; terrestrial planets ER - TY - JOUR T1 - Flooding in highly tectonized regions of Noctis Labyrinthus, Mars AN - 1780803630; 2016-033836 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Rodriguez, J Alexis P AU - Gulick, V C AU - Santiago, Rogelio Linares AU - Hernandez, Mario Zarroca AU - Fairen, A G AU - Baker, V R AU - Platz, T AU - Kargel, J S AU - Yan, Jianguo AU - Glines, N AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2349 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - silicates KW - permafrost KW - erosion KW - resurfacing KW - Mars KW - periglacial features KW - digital terrain models KW - ground water KW - pyroxene group KW - floods KW - HiRISE KW - tectonics KW - polygons KW - faults KW - chain silicates KW - shore features KW - THEMIS KW - pits KW - paleohydrology KW - Noctis Labyrinthus KW - pingos KW - canyons KW - grabens KW - terrestrial planets KW - planets KW - thermokarst KW - MOLA KW - glacial geology KW - patterned ground KW - fault scarps KW - mud volcanoes KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1780803630?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Flooding+in+highly+tectonized+regions+of+Noctis+Labyrinthus%2C+Mars&rft.au=Rodriguez%2C+J+Alexis+P%3BGulick%2C+V+C%3BSantiago%2C+Rogelio+Linares%3BHernandez%2C+Mario+Zarroca%3BFairen%2C+A+G%3BBaker%2C+V+R%3BPlatz%2C+T%3BKargel%2C+J+S%3BYan%2C+Jianguo%3BGlines%2C+N%3BAnonymous&rft.aulast=Rodriguez&rft.aufirst=J+Alexis&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2349.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 10 N1 - PubXState - TX N1 - Document feature - illus. incl. sketch map N1 - SuppNotes - Accessed on Oct. 28, 2015 N1 - Last updated - 2016-04-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - canyons; chain silicates; digital terrain models; erosion; fault scarps; faults; floods; glacial geology; grabens; ground water; HiRISE; Mars; MOLA; mud volcanoes; Noctis Labyrinthus; paleohydrology; patterned ground; periglacial features; permafrost; pingos; pits; planets; polygons; pyroxene group; resurfacing; shore features; silicates; tectonics; terrestrial planets; THEMIS; thermokarst ER - TY - JOUR T1 - Physical and material properties of Gale Crater sand deposits; from Rocknest to Pahrump AN - 1780803624; 2016-033847 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Fraeman, A A AU - Arvidson, R E AU - Ehlmann, B L AU - Bridges, N T AU - Clark, B AU - Cousin, A AU - Des Marais, D AU - Gellert, R AU - Johnson, J R AU - Lapotre, M G A AU - Schroeder, S AU - Stein, N T AU - Sullivan, R AU - Wellington, D AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1682 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - eolian features KW - Alpha Particle X-ray Spectrometer KW - Mars KW - elastic constants KW - ripple marks KW - Gale Crater KW - bedding plane irregularities KW - Hidden Valley KW - major elements KW - Pahrump KW - Curiosity Rover KW - sediments KW - ChemCam KW - HiRISE KW - sedimentary structures KW - sand KW - CRISM KW - clastic sediments KW - Dingo Gap KW - Mars Reconnaissance Orbiter KW - Rocknest KW - bedforms KW - terrestrial planets KW - compaction KW - planets KW - physical properties KW - Mars Science Laboratory KW - shear modulus KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1780803624?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Physical+and+material+properties+of+Gale+Crater+sand+deposits%3B+from+Rocknest+to+Pahrump&rft.au=Fraeman%2C+A+A%3BArvidson%2C+R+E%3BEhlmann%2C+B+L%3BBridges%2C+N+T%3BClark%2C+B%3BCousin%2C+A%3BDes+Marais%2C+D%3BGellert%2C+R%3BJohnson%2C+J+R%3BLapotre%2C+M+G+A%3BSchroeder%2C+S%3BStein%2C+N+T%3BSullivan%2C+R%3BWellington%2C+D%3BAnonymous&rft.aulast=Fraeman&rft.aufirst=A&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1682.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 9 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on Nov. 2, 2015 N1 - Last updated - 2016-08-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Alpha Particle X-ray Spectrometer; bedding plane irregularities; bedforms; ChemCam; clastic sediments; compaction; CRISM; Curiosity Rover; Dingo Gap; elastic constants; eolian features; Gale Crater; Hidden Valley; HiRISE; major elements; Mars; Mars Reconnaissance Orbiter; Mars Science Laboratory; Pahrump; physical properties; planets; ripple marks; Rocknest; sand; sedimentary structures; sediments; shear modulus; terrestrial planets ER - TY - JOUR T1 - Introduction to the Integrated Multi-satellite Retrievals for GPM (IMERG) precipitation datasets AN - 1780802724; 2016-032823 AB - The joint NASA-Japan Exploration Agency Global Precipitation Measurement (GPM) mission is being pursued to advance global precipitation science and application. One key dataset is the NASA team's Integrated Multi-satellitE Retrievals for GPM (IMERG), which provides a merged field of global precipitation based on the international constellation of precipitation-relevant satellites and a surface precipitation gauge analysis. The constellation estimates are intercalibrated using GPM Core Observatory data. Groups at NASA Goddard Space Flight Center, NOAA Climate Prediction Center, and Univ. of California Irvine's Center for Hydrometeorology and Remote Sensing contribute to the IMERG algorithm. IMERG provides 0.1 degrees X0.1 degrees half-hourly data for successive runs at 6 hours, 16 hours, and 3.5 months after observation time, referred to as the Early, Late, and Final Runs, respectively. In the Day-1 product, IMERG covers the latitude band 60 degrees N-S, for the period March 2014 to the present. In Spring 2016 IMERG will be retrospectively processed with fully GPM-based calibrations. Then, in early 2017 IMERG will be extended to cover 1998 to the present, and later expanded to fully global. All passive microwave estimates are produced using the latest version of the Goddard Profiling algorithm, currently GPROF2014 and moving to GPROF2015 in late 2015. These new GPROF's include application to microwave sounders for the first time. The presentation will briefly outline the various data fields provided in the IMERG data files, including precipitation estimates, time of observation and source of the current half hour's microwave input data, and the current half hour's IR precipitation estimate. The performance of the IMERG estimates will be discussed, including comparisons among the Runs. The talk will summarize the plans for continuing the legacy TRMM multi-satellite product, the TRMM Multi-satellite Precipitation Analysis (TMPA), until after IMERG is applied to the TRMM era. This reprocessing is expected in early 2017, with TMPA production ending about six months later. JF - Abstracts with Programs - Geological Society of America AU - Huffman, George J AU - Bolvin, David T AU - Braithwaite, Dan AU - Hsu, Kuolin AU - Joyce, Robert AU - Kidd, Christopher AU - Sorooshian, Soroosh AU - Xie, Pingping AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 484 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 21:Hydrogeology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1780802724?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Introduction+to+the+Integrated+Multi-satellite+Retrievals+for+GPM+%28IMERG%29+precipitation+datasets&rft.au=Huffman%2C+George+J%3BBolvin%2C+David+T%3BBraithwaite%2C+Dan%3BHsu%2C+Kuolin%3BJoyce%2C+Robert%3BKidd%2C+Christopher%3BSorooshian%2C+Soroosh%3BXie%2C+Pingping%3BAnonymous&rft.aulast=Huffman&rft.aufirst=George&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=484&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-04-14 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - NASA's contributions to the National Climate Assessment and climate literacy AN - 1777473133; 2016-028000 AB - The vantage point of space provides an amazing array of observations that can be used to understand land, ocean, and atmospheric properties and their interactions in a complex Earth system. NASA Earth science observations, models, research, and applications play a critical role understanding how climate is changing, quantifying impacts to physical, natural, and social systems, and informing adaptation and mitigation activities. Consequently, the agency has been actively involved in the U.S. Global Change Research Program's (USGCRP) National Climate Assessment (NCA). The NCA produces quadrennial reports that assess the science of climate change and its current and future impacts, analyzes impacts and responses for various sectors and regions, and aims to inform decision-making. The Third NCA was released in May 2014, and through an ongoing sustained assessment process, USGCRP is supporting capacity within the federal and external community to conduct ongoing assessments. During this presentation, I will provide an overview of how NASA scientifically contributes to NCA reports and a sustained assessment process, and helps communicate report findings and the underlying data through visualizations, the Global Change Information System, and educational activities. Additionally, NASA supports several assessment science programs, which fosters the ability of graduate students, post-docs, and researchers at all levels to participate in NCAs and encourages the research community to better understand the needs of climate assessors and decision makers. Combined, these activities promote climate literacy within the research community and the public. JF - Abstracts with Programs - Geological Society of America AU - Leidner, Allison K AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 469 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777473133?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=NASA%27s+contributions+to+the+National+Climate+Assessment+and+climate+literacy&rft.au=Leidner%2C+Allison+K%3BAnonymous&rft.aulast=Leidner&rft.aufirst=Allison&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=469&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-04-01 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Search for satellites at Ceres; upper limits of detection from Dawn's framing camera AN - 1777469989; 2016-030654 AB - Hundreds of asteroids have small secondary satellites or are double, or even multiple body systems; yet Ceres doesn't and isn't. Dwarf planet Pluto has five satellites yet dwarf planet Ceres has none. Ground-based and space-based telescopic searches have yielded ever-decreasing limits on the size of any small secondary bodies gravitationally bound to Ceres. The Dawn project's satellite working group conducted a satellite search during approach to Ceres searching close to the limb where previous searches could not. Images acquired for optical navigation and rotational characterization were also searched. More than 448 images were examined for evidence of moving objects gravitationally bound to Ceres during the dedicated satellite search at range of approximately 145,000 km from Ceres, and phase angle of 18 degrees . No moving objects associated with Ceres were detected. The search extended down to Ceres' limb (previous searches went to 15,000 km above the limb) and extended the upper limit for the non-detection to 30+ or -6 and 45 m + or -9 m radius for two effective exposure times (114s and 19s respectively). Previous upper limits to detection were in the 1-2 km range from Hubble Space Telescope observations. The Dawn mission's search reduced the detection limit by two orders of magnitude. Why some asteroids have satellites and others don't is the subject of dynamical speculation. JF - Abstracts with Programs - Geological Society of America AU - McFadden, Lucy A AU - Skillman, David R AU - Carsenty, Uri AU - Schroeder, Stefanus AU - Hellmich, Stephan AU - Li, Jian-Yang AU - Memarsadeghi, Nargess AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 784 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777469989?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Search+for+satellites+at+Ceres%3B+upper+limits+of+detection+from+Dawn%27s+framing+camera&rft.au=McFadden%2C+Lucy+A%3BSkillman%2C+David+R%3BCarsenty%2C+Uri%3BSchroeder%2C+Stefanus%3BHellmich%2C+Stephan%3BLi%2C+Jian-Yang%3BMemarsadeghi%2C+Nargess%3BAnonymous&rft.aulast=McFadden&rft.aufirst=Lucy&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=784&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-04-01 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Initial geologic mapping of the ac-h-4 Ezinu quadrangle of Ceres using Dawn spacecraft data AN - 1777469225; 2016-030642 AB - The Dawn Science Team divided the surface of Ceres into fifteen quadrangles, in order to facilitate systematic geological mapping. A geological map of Ezinu quadrangle is presented here, along with initial interpretations of the quadrangle's geological history. Ezinu quadrangle is located from 21-66 degrees N and 180-270 degrees E and includes the following dominant features: (1) Ezinu crater (120 km diameter), (2) the northern portion of Occator crater (92 km diameter), and (3) northwest-striking crater chains and grooves. Ezinu crater contains a cluster of small craters, sinuous grooves and mass wasting deposits in its interior and is associated with dark mantling material. This dark mantling material corresponds to the northern part of the #8 dark albedo region observed by Li et al. (2006) with the HST. The northern portion of Occator crater is associated with dark mantling material, which we interpret as Occator ejecta. This dark mantling material corresponds to part of the #10 dark albedo region observed by Li et al. (2006). The southern part of Ezinu quadrangle is cross-cut by northwest-striking crater chains and grooves. It is possible that the crater chains and grooves were formed by material ejected during the formation of the Yalode and/or Urvara impact craters in the southern hemisphere. Furthermore, Ezinu quadrangle is located in one of two possible water vapor source regions detected around Ceres (Kuppers et al., 2014). Ongoing work will include the identification of possible water vapor source regions within the quadrangle and the development of a detailed geological history. Currently, our geological mapping is based on Approach ( approximately 1.3 km/pixel) and Survey ( approximately 400 m/pixel) mosaics of clear and color filter data from the Dawn spacecraft's Framing Camera. In addition, shape models derived from Framing Camera data are used as a mapping aid. Dawn will begin the High Altitude Mapping Orbit (HAMO) in mid-August, and our geological mapping will incorporate the higher resolution HAMO mosaics ( approximately 140 m/pixel). Support by J-P. Combe, P. M. Schenk, R. Jaumann, T. Roatsch, F. Preusker, T. Platz, A. Nathues, M. Hoffmann, M. Schaefer, R. Park, S. Marchi, M. C. De Sanctis and the Dawn Instrument, Operations, and Science Teams is gratefully acknowledged. JF - Abstracts with Programs - Geological Society of America AU - Scully, Jennifer E C AU - Raymond, Carol A AU - Williams, David A AU - Buczkowski, Debra L AU - Mest, Scott C AU - Hughson, Kynan H G AU - Russell, Christopher T AU - Kneissl, Thomas AU - Ruesch, Ottaviano AU - Frigeri, Alessandro AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 781 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777469225?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Initial+geologic+mapping+of+the+ac-h-4+Ezinu+quadrangle+of+Ceres+using+Dawn+spacecraft+data&rft.au=Scully%2C+Jennifer+E+C%3BRaymond%2C+Carol+A%3BWilliams%2C+David+A%3BBuczkowski%2C+Debra+L%3BMest%2C+Scott+C%3BHughson%2C+Kynan+H+G%3BRussell%2C+Christopher+T%3BKneissl%2C+Thomas%3BRuesch%2C+Ottaviano%3BFrigeri%2C+Alessandro%3BAnonymous&rft.aulast=Scully&rft.aufirst=Jennifer+E&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=781&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-04-01 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Preliminary geological map of the ac-h-1 Asari quadrangle of Ceres; an integrated mapping study using dawn spacecraft data AN - 1777469012; 2016-030639 AB - We present a photo-geological map of the "Asari" quadrangle covering the North Pole area of Ceres (66 degrees N-90 degrees N), based on Dawn Framing Camera images and mosaics with a resolution of approximately 400 m/pixel. The mapping process is supported by a stereo-photogrammetric digital elevation model. We identified few isolated plateaus of up to approximately 5 km in altitude relative to the datum and topographic depressions interpreted to be highly degraded impact basins. At 85 degrees N/8 degrees E a cone-shaped positive relief is found, few tens of kms large. Overall, the entire quadrangle is heavily cratered, and our measurements of crater density (9.8E-04 km-2 for crater diameters >10 km) identify the area as the most cratered on Ceres. This suggest a different geological history of the quadrangle relative to, e.g., the equatorial regions. The morphology of impact craters is characterized by central peaks and mass wasting deposits. We identified a morphologically-fresh mass wasting deposit at 78 degrees N/38 degrees E, 20 km in length, with a lobate margin and striations on its surface. This deposit and the positive relief at 85 degrees N/8 degrees E will be the focus of future investigations when higher spatial resolution images will be acquired by the Dawn Framing Camera. Observations with a spatial resolution of up to 35 m/pixel are planned and will allow photo-geological mapping at higher details. Support by N. Schmedemann, S. Marchi, R. Jaumann, A. Nathues, C. A. Raymond, C.T. Russell, and the Dawn Instrument, Operations, and Science Teams is acknowledged. JF - Abstracts with Programs - Geological Society of America AU - Ruesch, Ottaviano AU - McFadden, Lucy A AU - Hiesinger, Harald AU - Scully, Jennifer E C AU - Kneissl, Thomas AU - Hughson, Kynan H G AU - Williams, David A AU - Roatsch, Thomas AU - Preusker, Frank AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 781 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777469012?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Preliminary+geological+map+of+the+ac-h-1+Asari+quadrangle+of+Ceres%3B+an+integrated+mapping+study+using+dawn+spacecraft+data&rft.au=Ruesch%2C+Ottaviano%3BMcFadden%2C+Lucy+A%3BHiesinger%2C+Harald%3BScully%2C+Jennifer+E+C%3BKneissl%2C+Thomas%3BHughson%2C+Kynan+H+G%3BWilliams%2C+David+A%3BRoatsch%2C+Thomas%3BPreusker%2C+Frank%3BAnonymous&rft.aulast=Ruesch&rft.aufirst=Ottaviano&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=781&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-04-01 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Initial geological maps of the ac-h-10 Rongo and ac-h-15 Zadeni quadrangles of Ceres using Dawn spacecraft data AN - 1777468966; 2016-030648 AB - We used geologic mapping applied to Dawn spacecraft data as a tool to understand the geologic history of the Ac-H-10 Rongo and Ac-H-15 Zadeni quadrangles of dwarf planet Ceres. These regions, Rongo and Zadeni, are located between 22 degrees S-22 degrees N and 288 degrees -360 degrees E and 65-90 degrees S and 0 degrees -360 degrees E, respectively. The Rongo Quadrangle hosts a number of features: 1) the southwest portion is dissected by curvilinear structures likely caused by Yalode basin formation; 2) the central part is marked by dome-like constructs up to 100 km across; 3) a peculiar bright, c.4 km tall, conical structure informally known as the 'pyramid'; 4) impact craters of various diameters appear moderately to highly degraded or are partially buried; and 5) bright material is primarily exposed in the central portion and often associated with craters. Rongo crater (68 km across) exhibits a central peak and scalloped walls indicative of its degraded appearance. The Zadeni Quadrangle is characterised by impact craters up to 130 km in diameter of which Zadeni crater is the largest. Impact craters across all sizes exhibit fresh to highly degraded morphologies or are partially buried. Many craters developed central peaks. Inter-crater plains are generally hummocky with isolated regions of smooth-textured surfaces. The south pole area (85-90 degrees S) is poorly illuminated and may host a large impact structure. Upcoming work includes compositional assessment of surface units utilising FC colour images and VIR spectral data and establishment of relative and absolute stratigraphy using crater-based dating techniques. Support by A. R. Yingst, D. L. Buczkowski, K. H. G. Hughson, T. Kneissl, C. T. Russell, N. Schmedemann, and the Dawn Instrument, Operations, and Science Teams is gratefully acknowledged. This work is supported by grants from NASA through the Dawn project, and from the German and Italian Space Agencies. JF - Abstracts with Programs - Geological Society of America AU - Platz, Thomas AU - Nathues, Andreas AU - Crown, David A AU - Mest, Scott C AU - Williams, David A AU - Hoffmann, Martin AU - Schaefer, Michael AU - Sizemore, Hanna G AU - Ruesch, Ottaviano AU - Preusker, Frank AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 783 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777468966?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Initial+geological+maps+of+the+ac-h-10+Rongo+and+ac-h-15+Zadeni+quadrangles+of+Ceres+using+Dawn+spacecraft+data&rft.au=Platz%2C+Thomas%3BNathues%2C+Andreas%3BCrown%2C+David+A%3BMest%2C+Scott+C%3BWilliams%2C+David+A%3BHoffmann%2C+Martin%3BSchaefer%2C+Michael%3BSizemore%2C+Hanna+G%3BRuesch%2C+Ottaviano%3BPreusker%2C+Frank%3BAnonymous&rft.aulast=Platz&rft.aufirst=Thomas&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=783&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-04-01 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Initial geologic mapping of the ac-h-3 Dantu quadrangle of Ceres using Dawn spacecraft data AN - 1777468854; 2016-030641 AB - We here present an initial geologic map of the Ac-H-3 Dantu Quadrangle, one of fifteen mapping quadrangles of dwarf planet Ceres. The current geologic map is based on Dawn spacecraft data, in particular on Framing Camera (FC) image mosaics derived from Approach ( approximately 1.3 km/px) and Survey ( approximately 400 m/px) data as well as digital terrain models (DTMs) derived from stereo imagery. Mosaics from the High Altitude Mapping Orbit (HAMO, approximately 140 m/px) and Low Altitude Mapping Orbit (LAMO, approximately 35 m/px) phases will be incorporated as soon as the data become available (Fall 2015/ Spring 2016). The Dantu Quadrangle is located between 21-66 degrees N and 90-180 degrees E and includes the following dominant features: 1) the central and northern portion of the 124.6 km diameter impact crater Dantu; 2) crater chains and/or grooves oriented in an east-west direction; 3) a portion of the 84 km diameter impact crater Gaue, whose ejecta blanket covers the SW corner of the quadrangle. Dantu is a complex impact crater showing terraces, a central pit structure, concentric fractures, and smooth deposits on the crater floor. The materials interpreted to be ejecta deposits of Dantu show low crater frequencies and dominate the southern half of the quadrangle. These deposits appear to be relatively bright and correspond to parts of the #2 high albedo region observed by (1) with the HST indicating different composition and/or material properties than the surroundings. The east-west striking crater chains and grooves are mainly found in the southern half of the quadrangle. They seem to be connected to the crater chains found in Ac-H-4 Ezinu, the neighboring quadrangle to the east, and are potentially related to ballistic ejecta emplacement (see 2). Further work will be focused on Dantu crater and its complex interior and exterior as well as on relative and absolute crater-based surface ages of the mapped geological units. We acknowledge the support of H. Hiesinger, S. H. G. Walter, R. Jaumann, T. Roatsch, F. Preusker, A. Nathues, T. Platz, M. Hoffmann, M. Schaefer, M. C. De Sanctis, C. A. Raymond, C. T. Russell, and the Dawn Instrument, Operations, and Science Teams. This work is partly supported by the German Space Agency (DLR), grant 50 OW 1101. JF - Abstracts with Programs - Geological Society of America AU - Kneissl, Thomas AU - Schmedemann, Nico AU - Neesemann, Adrian AU - Williams, David A AU - Crown, David A AU - Mest, Scott C AU - Buczkowski, Debra L AU - Scully, Jennifer E C AU - Frigeri, Alessandro AU - Ruesch, Ottaviano AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 781 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777468854?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Initial+geologic+mapping+of+the+ac-h-3+Dantu+quadrangle+of+Ceres+using+Dawn+spacecraft+data&rft.au=Kneissl%2C+Thomas%3BSchmedemann%2C+Nico%3BNeesemann%2C+Adrian%3BWilliams%2C+David+A%3BCrown%2C+David+A%3BMest%2C+Scott+C%3BBuczkowski%2C+Debra+L%3BScully%2C+Jennifer+E+C%3BFrigeri%2C+Alessandro%3BRuesch%2C+Ottaviano%3BAnonymous&rft.aulast=Kneissl&rft.aufirst=Thomas&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=781&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-04-01 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Initial geologic mapping of the ac-h-8 Nawish quadrangle of Ceres using Dawn spacecraft data AN - 1777468849; 2016-030646 AB - Herein we present the geologic mapping of the Ac-H-8 Nawish Quadrangle of Ceres, in order to identify the geologic processes that have modified the surface of dwarf planet Ceres, which NASA's Dawn spacecraft began orbiting in April 2015. Framing Camera data from the Approach (1.3 km/px) and Survey (415 m/px) orbits, including grayscale and color images and digital terrain models derived from stereo images, have enabled an initial characterization of the surface. Ceres has been divided into 15 quadrangles, and this abstract discusses the geology of the Ac-H-8 Nawish Quadrangle, located between -22-22 degrees and 144-216 degrees E. The quadrangle's name comes from the 75 km diameter crater Nawish which is located in the northern sector of the quadrangle. Nawish crater has a 3 km diameter central peak composed by a very bright material. This very bright material is being mapped elsewhere in the quadrangle in association with crater-related structures as rims or ejecta field. The western part of the quadrangle shows a 'smooth material' that hosts a significantly lower impact crater density than most of the rest of Ceres' surface. This smooth material extends beyond Nawish to the west, and a key goal of ongoing mapping will be to determine the possible resurfacing processes that formed this unit. Another primary feature of the study area is an unamed, partially degraded, 100-km crater in the central bottom sector of the quadrangle. The topography of the quadrangle obtained from stereo-processing of imagery, shows an highland in the middle of the quadrangle. The topography is lower in the northern and southern borders of the quadrangle, with an altitude range of about 9500 meters. Future work will include more detailed definition and characterization of surface units and estimates of their compositional variations through study of color images and Visible and Infrared spectrometer data, and application of crater statistical techniques to obtain model ages of surface units. Support by R. A. Yingst, C. M. Pieters, A. Nathues, M. Hoffmann, M. Schaefer, S. Marchi, M. C. De Sanctis, C. T. Russell, C. A. Raymond, and the Dawn Instrument, Operations, and Science Teams is grateful acknowledged. This work is supported by grants from NASA through the Dawn project, and from the German Space Agency. JF - Abstracts with Programs - Geological Society of America AU - Frigeri, Alessandro AU - De Sanctis, Maria Cristina AU - Carrozzo, Giacomo AU - Williams, David A AU - Mest, S AU - Buczkowski, Debra AU - Preusker, Frank AU - Jaumann, Ralf AU - Roatsch, Thomas AU - Scully, Jennifer E C AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 782 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777468849?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Initial+geologic+mapping+of+the+ac-h-8+Nawish+quadrangle+of+Ceres+using+Dawn+spacecraft+data&rft.au=Frigeri%2C+Alessandro%3BDe+Sanctis%2C+Maria+Cristina%3BCarrozzo%2C+Giacomo%3BWilliams%2C+David+A%3BMest%2C+S%3BBuczkowski%2C+Debra%3BPreusker%2C+Frank%3BJaumann%2C+Ralf%3BRoatsch%2C+Thomas%3BScully%2C+Jennifer+E+C%3BAnonymous&rft.aulast=Frigeri&rft.aufirst=Alessandro&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=782&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-04-01 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Initial geologic mapping of the ac-h-5 Fejokoo quadrangle of Ceres using Dawn spacecraft data AN - 1777468400; 2016-030643 AB - In order to enable methodical geologic mapping of the surface of Ceres the Dawn Science Team divided its surface into fifteen quadrangles. A preliminary map of the Fejokoo quadrangle is presented here. This region, located between 2 degrees -66 degrees N and 270-0 degrees E, hosts four primary features: (1) the centrally located, 90 km diameter, distinctly hexagonal impact crater Fejokoo; (2) a small unnamed crater midway up the eastern boundary of the quadrangle which contains and is surrounded by bright material; (3) an unnamed degraded crater NW of Fejokoo that contains lobate material deposits on both sides of the crater's S rim; and (4) a heavily cratered unit in the NW portion of the quadrangle. Key objectives for the ongoing mapping of this quadrangle are to assess the types of processes that may be responsible for the creation of the hexagonal Fejokoo crater, identifying the source and nature of the bright material on the eastern boundary, establishing possible mechanisms for the emplacement of lobate material deposits in Fejokoo and the unnamed crater to its NW, and establishing a detailed geological history of the quadrangle. The Fejokoo region is not associated with any major albedo feature identified by the Hubble Space Telescope (Li et al., 2006). At the time of this writing geologic mapping was performed using Framing Camera (FC) mosaics from the Approach (1.3 km/px) and Survey (415 m/px) orbits, including grayscale and color images and digital terrain models derived from stereo images. Future images from the High Altitude Mapping Orbit (140 m/px) and Low Altitude Mapping Orbit (35 m/px) will be used to refine the maps. Support by P. M. Schenk, A. Frigeri, L. A. McFadden, R. Jaumann, T. Roatsch, F. Preusker, A. Nathues, M. Hoffmann, M. Schaefer, R. Park, S. Marchi, and M. C. De Sanctis. Support of the Dawn Instrument, Operations, and Science Teams is acknowledged. This work is supported by grants from NASA, and from the German and Italian Space Agencies. JF - Abstracts with Programs - Geological Society of America AU - Hughson, Kynan H G AU - Russell, C T AU - Williams, David A AU - Buczkowski, Debra L AU - Mest, Scott C AU - Scully, Jennifer E C AU - Hiesinger, Harald AU - Platz, Thomas AU - Ruesch, Ottaviano AU - Raymond, Carol A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 782 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777468400?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Initial+geologic+mapping+of+the+ac-h-5+Fejokoo+quadrangle+of+Ceres+using+Dawn+spacecraft+data&rft.au=Hughson%2C+Kynan+H+G%3BRussell%2C+C+T%3BWilliams%2C+David+A%3BBuczkowski%2C+Debra+L%3BMest%2C+Scott+C%3BScully%2C+Jennifer+E+C%3BHiesinger%2C+Harald%3BPlatz%2C+Thomas%3BRuesch%2C+Ottaviano%3BRaymond%2C+Carol+A%3BAnonymous&rft.aulast=Hughson&rft.aufirst=Kynan+H&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=782&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-04-01 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Functional and taxonomic dynamics of a methanogenic biofilm community using a solid-phase electron donor AN - 1777466640; 2016-030160 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Bretschger, Orianna AU - La Carpenter, Kay AU - Phan, Tony AU - Ishii, Shunichi AU - Suzuki, Shino AU - Grossi-Soyster, Elysse AU - Flynn, Michael AU - Hogan, John AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 388 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - Clostridium KW - communities KW - Archaea KW - aliphatic hydrocarbons KW - nitrogen KW - carbon dioxide KW - carbon KW - Desulfovibrio KW - ecology KW - Methanobacterium KW - soils KW - processes KW - methane KW - biochemistry KW - alkanes KW - geochemical cycle KW - organic compounds KW - nucleic acids KW - RNA KW - Rhizobium KW - biofilms KW - bacteria KW - hydrocarbons KW - carbon cycle KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777466640?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Functional+and+taxonomic+dynamics+of+a+methanogenic+biofilm+community+using+a+solid-phase+electron+donor&rft.au=Bretschger%2C+Orianna%3BLa+Carpenter%2C+Kay%3BPhan%2C+Tony%3BIshii%2C+Shunichi%3BSuzuki%2C+Shino%3BGrossi-Soyster%2C+Elysse%3BFlynn%2C+Michael%3BHogan%2C+John%3BAnonymous&rft.aulast=Bretschger&rft.aufirst=Orianna&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=388&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/388.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 7 N1 - Last updated - 2016-04-01 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; Archaea; bacteria; biochemistry; biofilms; carbon; carbon cycle; carbon dioxide; Clostridium; communities; Desulfovibrio; ecology; geochemical cycle; hydrocarbons; methane; Methanobacterium; nitrogen; nucleic acids; organic compounds; processes; Rhizobium; RNA; soils ER - TY - JOUR T1 - Investigation of benthic foraminiferal "non-traditional" stable isotopes to reconstruct methane fluxes in sedimentary environments AN - 1777466573; 2016-027765 AB - Methane (CH (sub 4) ) is an important greenhouse gas, with a global warming potential much higher than carbon dioxide (CO (sub 2) ) on a short time scale. Even if the residence time of CH (sub 4) in the atmosphere is relatively short (tens of years), one of the products of CH (sub 4) oxidation is CO (sub 2) , a greenhouse gas with a much longer residence time in the atmosphere (tens to hundreds of years). CH (sub 4) has been proposed as one of the trigger mechanisms for rapid global climate change today and in the geological past. With regards to the geological past, numerous studies proposed the benthic foraminiferal carbon isotope ratio (delta (super 13) C) as a tool to reconstruct the impact of marine CH (sub 4) on rapid climate changes; however, the investigation of modern benthic foraminiferal delta (super 13) C have produced inconclusive results. CH (sub 4) has a distinctive hydrogen isotope (delta D) and delta (super 13) C signature compared to seawater, and sulfate reduction, often coupled to CH (sub 4) anaerobic oxidation in sediments, changes the sulfur isotope signature (delta (super 34) S) of the remaining sulfate in porewater. Therefore, we hypothesize that the delta D and delta (super 34) S signature of infaunal benthic foraminiferal species can provide a complementary approach to delta (super 13) C to study CH (sub 4) dynamics in sedimentary environments. Here, we present the preliminary results obtained analyzing Uvigerina peregrina delta D and delta (super 34) S from three different locations at Hydrate Ridge, offshore Oregon. Unfortunately, the lack of chemical data related to the moment of foraminiferal calcification makes it difficult to build a robust relationship among the U. peregrina stable isotopes and the CH (sub 4) fluxes at the sampling sites. However, our results look very promising, as each site is characterized by a different delta D and delta (super 34) S signature. We emphasize that this study represents the first step in the development of new proxies (delta D and delta (super 34) S), which may complement the more traditional benthic foraminiferal delta (super 13) C values, to reconstruct marine CH (sub 4) fluxes in the geological past. JF - Abstracts with Programs - Geological Society of America AU - Borrelli, Chiara AU - Gabitov, Rinat I AU - Messenger, S R AU - Nguyen, A N AU - Torres, M E AU - Kessler, J D AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 131 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777466573?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Investigation+of+benthic+foraminiferal+%22non-traditional%22+stable+isotopes+to+reconstruct+methane+fluxes+in+sedimentary+environments&rft.au=Borrelli%2C+Chiara%3BGabitov%2C+Rinat+I%3BMessenger%2C+S+R%3BNguyen%2C+A+N%3BTorres%2C+M+E%3BKessler%2C+J+D%3BAnonymous&rft.aulast=Borrelli&rft.aufirst=Chiara&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=131&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-04-01 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Ice, Cloud and Land Elevation Satellite-2 (ICESat-2) applications in the context of the national plan AN - 1773799794; 2016-023095 AB - In alignment with the National Plan for Civil Earth Observations, NASA plans to launch the Ice, Cloud and land Elevation Satellite-2 (ICESat-2) mission in 2017 to continue the multi-year experimental observations of the Earth's surface elevation established by ICESat (2003-2009). The ICESat-2 mission will advance our knowledge on ice sheet elevation change, sea ice thickness, and other key observations for ecosystem, climate, and water applications. In accordance with the National Plan and in an effort to advance data discovery, access, and use of ICESat-2 observations as put forward by the President's Big Earth Data Initiative, ICESat-2 has an Applications program. The program provides a framework for building a broad and well-defined user community during the prelaunch phases of the mission to maximize the use of data products after launch and to provide early insight into the range of potential uses of the mission data. Through a multiscale communications approach and an Early Adopter program, ICESat-2 is facilitating the necessary feedback loops between the mission and user communities necessary for a transparent understanding of the utility of ICESat-2 data products within different decision-making contexts. In this presentation we will summarize the various initiatives of the ICESat-2 Applications program and provide a synthesis of the current Early Adopter research in the context of the Societal Benefit Areas laid out by the National Plan. JF - Abstracts with Programs - Geological Society of America AU - Delgado Arias, Sabrina AU - Escobar, Vanessa AU - Brown, Molly AU - Neumann, Thomas AU - Jasinski, Michael F AU - Markus, Thorsten AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 75 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 15:Miscellaneous UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773799794?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Ice%2C+Cloud+and+Land+Elevation+Satellite-2+%28ICESat-2%29+applications+in+the+context+of+the+national+plan&rft.au=Delgado+Arias%2C+Sabrina%3BEscobar%2C+Vanessa%3BBrown%2C+Molly%3BNeumann%2C+Thomas%3BJasinski%2C+Michael+F%3BMarkus%2C+Thorsten%3BAnonymous&rft.aulast=Delgado+Arias&rft.aufirst=Sabrina&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=75&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-03-17 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Satellite-based investigation of recent environmental and land-cover changes due to biomass burning in northern sub-Saharan Africa AN - 1773799635; 2016-025183 AB - One of the most environmentally dynamic regions of the world is the northern sub-Saharan African (NSSA) region, which is bounded to the north and south by the Sahara and the Equator, respectively, and stretches East-West across Africa. This is due in part to the intense anthropogenic biomass burning activities that occur there during the dry season, year after year. In fact, this NSSA region alone is estimated to contribute 20%-25% of the global annual carbon emissions from open biomass burning. This extensive biomass-burning phenomenon is apt to make a substantial contribution to environmental change, whose effects on the regional climate variability can be significant, with far-reaching implications for societal adaptation. We are using robust remote sensing analysis approaches to investigate the environmental change dynamics due to biomass burning and related processes in the NSSA region. Analysis of instantaneous fire observations from MODIS sensors aboard Terra and Aqua satellites paired with the corresponding land cover type and surface albedo retrievals over the study period of 2003-2013 reveals a dominant burning of savanna, followed by cropland land cover types throughout the region. For all land-cover types, there is a tendency toward post-fire decrease in regional surface albedo, of which at least 99% recovers to pre-fire values within 7 years. There are a few indications of the interchange between savanna and cropland due to the burning practices. Although the fire activity in the whole NSSA region decreased at the rate of 1.4%/yr during the study period, some land cover types in parts of NSSA show an increase in the intensity of burning, including local increases within sensitive land cover types such as forest and wetland, which could have serious ecological implications. JF - Abstracts with Programs - Geological Society of America AU - Ichoku, Charles AU - Ellison, Luke AU - Gatebe, Charles K AU - Poudyal, Rajesh AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 283 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773799635?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Satellite-based+investigation+of+recent+environmental+and+land-cover+changes+due+to+biomass+burning+in+northern+sub-Saharan+Africa&rft.au=Ichoku%2C+Charles%3BEllison%2C+Luke%3BGatebe%2C+Charles+K%3BPoudyal%2C+Rajesh%3BAnonymous&rft.aulast=Ichoku&rft.aufirst=Charles&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=283&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-03-17 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Aqueous alteration on Mars; evidence from landed missions AN - 1773799444; 2016-023070 AB - Mineralogical and geochemical data returned by orbiters and landers over the past 15 years have substantially enhanced our understanding of the history of aqueous alteration on Mars. Here, we summarize aqueous processes that have been implied from data collected by landed missions. Mars is a basaltic planet. The geochemistry of most materials has not been "extensively" altered by open-system aqueous processes and have average Mars crustal compositions. There are few examples of open-system alteration, such as Gale crater's Pahrump Hills mudstone. Types of aqueous alteration include (1) acid-sulfate and (2) hydrolytic (circum-neutral/alkaline pH) with varying water to rock ratios. Several hypotheses have been suggested for acid-sulfate alteration including (1) oxidative weathering of ultramafic igneous rocks containing sulfides, (2) sulfuric acid weathering of basaltic materials, (3) acid fog weathering of basaltic materials, and (4) near-neutral pH subsurface solutions rich in Fe (super 2+) that rapidly oxidized to Fe (super 3+) producing excess acidity. Meridiani Planum's sulfate-rich sedimentary deposit containing jarosite is the most "famous" acid-sulfate environment visited on Mars, although ferric sulfate-rich soils are common in Gusev crater's Columbia Hills and jarosite was recently discovered in the Pahrump Hills. An example of aqueous alteration under circum-neutral pH conditions is the formation of Fe-saponite with magnetite in situ via aqueous alteration of olivine in Gale crater's Sheepbed mudstone. Circum-neutral pH, hydrothermal conditions were likely required for the formation of Mg-Fe carbonate in the Columbia Hills. Diagenetic features (e.g., spherules, fracture filled veins) indicate multiple episodes of aqueous alteration/diagenesis in most sedimentary deposits. However, low water-to-rock ratios are prominent at most sites visited by landed missions (e.g., limited water for reaction to form crystalline phases possibly resulting in large amounts of short-range ordered materials and little physical separation of primary and secondary materials). Most of the aqueous alteration appears to have occurred early in the planet's history; however, minor aqueous alteration may be occurring at the surface today (e.g., thin films of water forming carbonates akin to those discovered by Phoenix). JF - Abstracts with Programs - Geological Society of America AU - Ming, Douglas W AU - Morris, Richard V AU - Clark, Benton C, III AU - Yen, Albert S AU - Gellert, Ralf AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 70 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773799444?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Aqueous+alteration+on+Mars%3B+evidence+from+landed+missions&rft.au=Ming%2C+Douglas+W%3BMorris%2C+Richard+V%3BClark%2C+Benton+C%2C+III%3BYen%2C+Albert+S%3BGellert%2C+Ralf%3BAnonymous&rft.aulast=Ming&rft.aufirst=Douglas&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=70&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-03-17 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Assessing the effects of solution chemistry on the delta D composition weather minerals; isotope analysis of structure waters in synthetic phyllosilicates formed in extreme pH and saline fluids AN - 1773799325; 2016-023072 AB - Phyllosilicate minerals are a useful proxy of paleoenvironment and paleoclimate. The distribution and accumulation of these minerals can be used to reconstruct temperature, pressure, and even some details of aqueous chemistry. Barring diagenetic forcings, common clay minerals such as kaolinite, illite, and smectite preserve a delta D composition that can be used to interpret the isotopic composition of the waters in which they formed. The fractionation between delta D in the precipitating mineral and the formation water is temperature dependent and has been determined empirically for circumneutral waters on Earth. These fractionation factors have been widely used to reconstruct paleowater delta D on Earth, and this technique has also been applied to martian meteorites and in situ measurements made on smectites at Gale Crater with the SAM (Sample Analysis at Mars) instrument. This experiment poses a special problem however since formation waters recorded by materials throughout Gale Crater may not necessarily be dilute and circumneutral like terrestrial meteoric waters but rather acidic and saline. This work evaluates the effects of acidity, salinity and water activity on fractionation between formation waters and clay minerals in order to improve our estimates of the delta D in the lakes of Gale Crater in the past. Synthetic phyllosilicate minerals were formed from basalts and basaltic glasses in D-enriched fluids under extreme pH (both acid and alkaline) and highly saline conditions. The delta D of the starting aqueous solution was analyzed, as well as the delta D of the final post-reaction solution and the synthesized clay minerals. The identity and abundance of the minerals formed during reaction was determined by XRD. The clay-size fraction of the reaction product contained a variety of smectites and zeolites These experiments have found that the delta D expression of a mineral can be greatly influenced by solutes and suggests that fractionation factors for clays formed in saline, extreme pH fluids may not be the same as those for circumneutral conditions. These results would recommend fractionation factors used for reconstruction of meteoric water delta D must be sensitive to the chemistry of the formation solution. JF - Abstracts with Programs - Geological Society of America AU - Graham, Heather V AU - McAdam, Amy AU - Stern, Jennifer C AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 71 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 01B:Mineralogy of silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773799325?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Assessing+the+effects+of+solution+chemistry+on+the+delta+D+composition+weather+minerals%3B+isotope+analysis+of+structure+waters+in+synthetic+phyllosilicates+formed+in+extreme+pH+and+saline+fluids&rft.au=Graham%2C+Heather+V%3BMcAdam%2C+Amy%3BStern%2C+Jennifer+C%3BAnonymous&rft.aulast=Graham&rft.aufirst=Heather&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=71&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-03-17 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - ARGUS; a concept study for an Io observer mission from the 2014 NASA/JPL Planetary Science Summer School AN - 1773798877; 2016-022688 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Marcucci, E C AU - Hays, L AU - Holstein-Rathlou, C AU - Keane, J T AU - Becerra, P AU - Basu, K AU - Davis, B AU - Fox, V AU - Herman, J AU - Hughes, A AU - Mendez Ramos, E AU - Nelessen, A AU - Neveu, M AU - Parrish, N AU - Scheinberg, A AU - Wrobel, J S AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2624 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - Jet Propulsion Laboratory KW - Argus concept mission KW - tidal heating KW - Jupiter KW - government agencies KW - Io Satellite KW - Galilean satellites KW - cost KW - concepts KW - giant planets KW - planets KW - mitigation KW - Planetary Science Summer School KW - volcanism KW - NASA KW - background radiation KW - outer planets KW - satellites KW - instruments KW - design KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773798877?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=ARGUS%3B+a+concept+study+for+an+Io+observer+mission+from+the+2014+NASA%2FJPL+Planetary+Science+Summer+School&rft.au=Marcucci%2C+E+C%3BHays%2C+L%3BHolstein-Rathlou%2C+C%3BKeane%2C+J+T%3BBecerra%2C+P%3BBasu%2C+K%3BDavis%2C+B%3BFox%2C+V%3BHerman%2C+J%3BHughes%2C+A%3BMendez+Ramos%2C+E%3BNelessen%2C+A%3BNeveu%2C+M%3BParrish%2C+N%3BScheinberg%2C+A%3BWrobel%2C+J+S%3BAnonymous&rft.aulast=Marcucci&rft.aufirst=E&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2624.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 1 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table, sketch map N1 - SuppNotes - Accessed on Nov. 11, 2015 N1 - Last updated - 2016-03-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Argus concept mission; background radiation; concepts; cost; design; Galilean satellites; giant planets; government agencies; instruments; Io Satellite; Jet Propulsion Laboratory; Jupiter; mitigation; NASA; outer planets; Planetary Science Summer School; planets; satellites; tidal heating; volcanism ER - TY - JOUR T1 - Using citizen science to grow a global landslide catalog AN - 1773798599; 2016-025087 AB - Landslides occur in every country in the world, killing thousands of people each year and causing billions of dollars in property damage. However, the ability to actively monitor where and when they are happening is extremely limited, with very few open catalogs in the world that document these hazards. A prototype landslide reporting system has been developed that provides access to the Global Landslide Catalog (GLC), a rainfall-triggered landslide database based on media reports, online disaster databases, and other sources that has been compiled by scientists and interns at NASA GSFC since 2007. The current website (http://ojo-streamer.herokuapp.com/) displays the GLC data and allows visitors to make edits and new entries to the database as well as search and download data. While functional, the current interfaces need improvements before it can be fully realized as a useful tool. Citizen scientists are poised to provide contributions to this global hazard in a way that is impossible from a single monitoring entity and may be overlooked due to various reasons. Having a larger inventory of landslides will be game changing for a multitude of applications, including: better defining landslide triggering relationships, informing emergency responders of events in an affected area, making the public more aware of the pervasiveness of this hazard, and serving as a critical calibration and validation tool for researchers. This work presents a conceptual framework that seeks to expand the global catalog of landslide events through citizen science participation and engagement across a range of different agencies and partners. This work will also present findings from the existing global landslide catalog and outline some of the challenges associated with amassing a catalog of this nature. JF - Abstracts with Programs - Geological Society of America AU - Kirschbaum, Dalia AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 248 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773798599?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Using+citizen+science+to+grow+a+global+landslide+catalog&rft.au=Kirschbaum%2C+Dalia%3BAnonymous&rft.aulast=Kirschbaum&rft.aufirst=Dalia&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=248&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-03-17 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - NASA's International Space Station; a testbed for planetary protection protocol development AN - 1773798505; 2016-024594 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Bell, Mary S AU - Rucker, M AU - Love, S AU - Johnson, J AU - Chambliss, J AU - Pierson, D AU - Ott, M AU - Mary, N AU - Glass, B AU - Lupisella, M AU - Scheuger, A AU - Race, M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2103 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - protection KW - technology KW - International Space Station KW - extra-vehicular activity KW - government agencies KW - exploration KW - planets KW - planetary protection KW - transport KW - NASA KW - spacecraft KW - microorganisms KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773798505?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=NASA%27s+International+Space+Station%3B+a+testbed+for+planetary+protection+protocol+development&rft.au=Bell%2C+Mary+S%3BRucker%2C+M%3BLove%2C+S%3BJohnson%2C+J%3BChambliss%2C+J%3BPierson%2C+D%3BOtt%2C+M%3BMary%2C+N%3BGlass%2C+B%3BLupisella%2C+M%3BScheuger%2C+A%3BRace%2C+M%3BAnonymous&rft.aulast=Bell&rft.aufirst=Mary&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2103.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Jan. 12, 2016 N1 - Last updated - 2016-03-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - exploration; extra-vehicular activity; government agencies; International Space Station; microorganisms; NASA; planetary protection; planets; protection; spacecraft; technology; transport ER - TY - JOUR T1 - Mojave Volatiles Prospector (MVP); science and operations results from a lunar polar rover analog field campaign AN - 1773798491; 2016-024613 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Heldmann, Jennifer L AU - Colaprete, A AU - Cook, A AU - Roush, T AU - Deans, M C AU - Elphic, R AU - Lim, D S S AU - Skok, J R AU - Button, N E AU - Karunatillake, S AU - Garcia, G AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2165 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - United States KW - silicates KW - near-infrared spectra KW - X-ray diffraction data KW - optical spectra KW - mapping KW - exploration KW - absorption KW - Mojave Desert KW - retention KW - water content KW - spectra KW - real-time methods KW - water KW - soils KW - polar regions KW - Moon KW - decision-making KW - rovers KW - clay minerals KW - Mojave Volatiles Prospector KW - volatiles KW - infiltration KW - natural analogs KW - sheet silicates KW - robotics KW - pore water KW - instruments KW - 02C:Geochemistry of rocks, soils, and sediments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773798491?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Mojave+Volatiles+Prospector+%28MVP%29%3B+science+and+operations+results+from+a+lunar+polar+rover+analog+field+campaign&rft.au=Heldmann%2C+Jennifer+L%3BColaprete%2C+A%3BCook%2C+A%3BRoush%2C+T%3BDeans%2C+M+C%3BElphic%2C+R%3BLim%2C+D+S+S%3BSkok%2C+J+R%3BButton%2C+N+E%3BKarunatillake%2C+S%3BGarcia%2C+G%3BAnonymous&rft.aulast=Heldmann&rft.aufirst=Jennifer&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2165.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 2 N1 - PubXState - TX N1 - Document feature - illus. incl. 2 tables N1 - SuppNotes - Accessed on Jan. 19, 2016 N1 - Last updated - 2016-03-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - absorption; clay minerals; decision-making; exploration; infiltration; instruments; mapping; Mojave Desert; Mojave Volatiles Prospector; Moon; natural analogs; near-infrared spectra; optical spectra; polar regions; pore water; real-time methods; retention; robotics; rovers; sheet silicates; silicates; soils; spectra; United States; volatiles; water; water content; X-ray diffraction data ER - TY - JOUR T1 - The distribution of surface roughness around complex impact craters on Mercury AN - 1773798438; 2016-025171 AB - Surface roughness is a quantitative measure of the change in topography over a given distance and can provide clues as to what geological process dominates a given scale of topography. Previous studies of Mercury have found that impact cratering dominates surface roughness from a few hundred meters to kilometer-scale baselines. This study compares surface roughness over a broad range of baselines within individual fresh complex craters and their deposits to understand how the impact cratering process, with its variations on Mercury, is reflected in surface roughness measurements. Such an assessment can provide evidence for the processes (e.g., target properties, impact velocity and angle) that cause craters on Mercury to differ from one another. The surface roughness of Mercury is measured from topographic data obtained by the Mercury Laser Altimeter (MLA) on the MErcury, Surface Space, ENvironment, GEochemistry, and Ranging (MESSENGER) spacecraft. Roughness from a few hundred meters to kilometer-scales is determined from separate MLA footprints within MLA tracks, while the spread in the MLA pulse-width at each return reflects both meter-scale roughness and local slope. These large- and small-scale roughness measurements cannot be compared quantitatively because they were derived by different means; however, qualitative comparisons are useful in interpreting the morphology of these craters. Typical complex impact craters and their deposits have increased long-scale surface roughness than average roughness on the crater rim, near-field ejecta, and secondary fields. Small-scale surface roughness is highest on the crater rim and ejecta, but declines to background roughness values closer to the crater rim compared to long-scale roughness. Variations in the long- and meter-scale surface roughness exist between craters. For example, ejecta of the crater Hokusai (95 km in diameter) have lower roughness values than the similarly sized adjacent crater Abedin (110 km in diameter). The higher-roughness values associated with the ejecta ends closer to the crater than a more typical crater such as Abedin. This may be due to extensive impact melt around Hokusai. By comparing the surface roughness with imaging and other datasets, permits the evaluation of hypothesis into the origin of unusual craters on Mercury. JF - Abstracts with Programs - Geological Society of America AU - Susorney, Hannah C AU - Barnouin, Olivier S AU - Ernst, Carolyn M AU - Neumann, Gregory A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 281 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773798438?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=The+distribution+of+surface+roughness+around+complex+impact+craters+on+Mercury&rft.au=Susorney%2C+Hannah+C%3BBarnouin%2C+Olivier+S%3BErnst%2C+Carolyn+M%3BNeumann%2C+Gregory+A%3BAnonymous&rft.aulast=Susorney&rft.aufirst=Hannah&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=281&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-03-17 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Melt inclusion analysis of RBT 04262 with relationship to shergottites and Mars surface compositions AN - 1773798061; 2016-024557 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Potter, S A AU - Brandon, A D AU - Peslier, A H AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2945 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - silicates KW - magmatic differentiation KW - magnesium KW - stony meteorites KW - Martian meteorites KW - RBT 04262 KW - mantle KW - olivine group KW - Mars KW - melt inclusions KW - Roberts Massif Meteorites KW - electron probe data KW - SNC Meteorites KW - meteorites KW - silica KW - olivine KW - inclusions KW - orthosilicates KW - alkaline earth metals KW - alkali metals KW - achondrites KW - terrestrial planets KW - nesosilicates KW - planets KW - shergottite KW - metals KW - magmas KW - parent materials KW - fluid inclusions KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773798061?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Melt+inclusion+analysis+of+RBT+04262+with+relationship+to+shergottites+and+Mars+surface+compositions&rft.au=Potter%2C+S+A%3BBrandon%2C+A+D%3BPeslier%2C+A+H%3BAnonymous&rft.aulast=Potter&rft.aufirst=S&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2945.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 21 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Dec. 28, 2015 N1 - Last updated - 2016-03-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; alkali metals; alkaline earth metals; electron probe data; fluid inclusions; inclusions; magmas; magmatic differentiation; magnesium; mantle; Mars; Martian meteorites; melt inclusions; metals; meteorites; nesosilicates; olivine; olivine group; orthosilicates; parent materials; planets; RBT 04262; Roberts Massif Meteorites; shergottite; silica; silicates; SNC Meteorites; stony meteorites; terrestrial planets ER - TY - JOUR T1 - Testing the incorporation of portable infrared imaging into a sampling workflow to enhance science return by astronauts AN - 1773798058; 2016-024608 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Ito, G AU - Rogers, A D AU - Young, K E AU - Bleacher, J E AU - Edwards, C S AU - Glotch, T D AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1548 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - United States KW - Hawaii Island KW - volcanic rocks KW - asteroids KW - igneous rocks KW - data processing KW - calibration KW - simulation KW - laboratory studies KW - infrared spectroscopy KW - volcanic features KW - basalts KW - thermal emission KW - volcanic ash KW - Kilauea KW - principal components analysis KW - Moon KW - Hawaii County Hawaii KW - portable instruments KW - Hawaii KW - East Pacific Ocean Islands KW - pyroclastics KW - thermal infrared spectroscopy KW - Forward Looking Infrared Thermal Imager KW - Oceania KW - testing KW - Polynesia KW - corrections KW - spectroscopy KW - lava fields KW - instruments KW - image analysis KW - filters KW - field studies KW - 04:Extraterrestrial geology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773798058?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Testing+the+incorporation+of+portable+infrared+imaging+into+a+sampling+workflow+to+enhance+science+return+by+astronauts&rft.au=Ito%2C+G%3BRogers%2C+A+D%3BYoung%2C+K+E%3BBleacher%2C+J+E%3BEdwards%2C+C+S%3BGlotch%2C+T+D%3BAnonymous&rft.aulast=Ito&rft.aufirst=G&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1548.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 5 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Jan. 19, 2016 N1 - Last updated - 2016-05-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - asteroids; basalts; calibration; corrections; data processing; East Pacific Ocean Islands; field studies; filters; Forward Looking Infrared Thermal Imager; Hawaii; Hawaii County Hawaii; Hawaii Island; igneous rocks; image analysis; infrared spectroscopy; instruments; Kilauea; laboratory studies; lava fields; Moon; Oceania; Polynesia; portable instruments; principal components analysis; pyroclastics; simulation; spectroscopy; testing; thermal emission; thermal infrared spectroscopy; United States; volcanic ash; volcanic features; volcanic rocks ER - TY - JOUR T1 - International Observe the Moon Night; an effective model for public engagement with NASA content AN - 1773797907; 2016-022702 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Bleacher, Lora V AU - Jones, A J P AU - Shaner, A AU - Day, B AU - Buxner, S AU - Wegner, M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2281 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - models KW - programs KW - telescope methods KW - public awareness KW - Moon KW - Lunar Reconnaissance Orbiter KW - NASA KW - International Observe the Moon Night KW - government agencies KW - education KW - evaluation KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773797907?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=International+Observe+the+Moon+Night%3B+an+effective+model+for+public+engagement+with+NASA+content&rft.au=Bleacher%2C+Lora+V%3BJones%2C+A+J+P%3BShaner%2C+A%3BDay%2C+B%3BBuxner%2C+S%3BWegner%2C+M%3BAnonymous&rft.aulast=Bleacher&rft.aufirst=Lora&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2281.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 6 N1 - PubXState - TX N1 - Document feature - sketch map N1 - SuppNotes - Accessed on Nov. 18, 2015 N1 - Last updated - 2016-03-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - education; evaluation; government agencies; International Observe the Moon Night; Lunar Reconnaissance Orbiter; models; Moon; NASA; programs; public awareness; telescope methods ER - TY - JOUR T1 - LRO's Lunar Workshops for Educators; a proven model of exceptional professional development for teachers AN - 1773797858; 2016-022697 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Jones, Andrea J P AU - Bleacher, Lora V AU - Buxner, S AU - Canipe, M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1898 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - programs KW - Moon KW - Lunar Reconnaissance Orbiter KW - government agencies KW - education KW - teacher education KW - exploration KW - evaluation KW - models KW - K-12 education KW - NASA KW - Lunar Workshops for Educators KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773797858?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=LRO%27s+Lunar+Workshops+for+Educators%3B+a+proven+model+of+exceptional+professional+development+for+teachers&rft.au=Jones%2C+Andrea+J+P%3BBleacher%2C+Lora+V%3BBuxner%2C+S%3BCanipe%2C+M%3BAnonymous&rft.aulast=Jones&rft.aufirst=Andrea+J&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1898.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 11 N1 - PubXState - TX N1 - SuppNotes - Accessed on Nov. 17, 2015 N1 - Last updated - 2016-03-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - education; evaluation; exploration; government agencies; K-12 education; Lunar Reconnaissance Orbiter; Lunar Workshops for Educators; models; Moon; NASA; programs; teacher education ER - TY - JOUR T1 - Investigating Trojan asteroids at the L4/L5 Sun-Earth Lagrange points AN - 1773797750; 2016-022681 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - John, K K AU - Graham, L D AU - Abell, P A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2845 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - near-Earth objects KW - Earth KW - numerical models KW - in situ KW - asteroids KW - telescope methods KW - near-Earth asteroids KW - CubeSat KW - Trojan asteroids KW - orbits KW - TK7 Asteroid 2010 KW - NEOWISE KW - Lagrange points KW - motions KW - detection KW - WISE KW - Wide-field Infrared Survey Explorer KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773797750?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Investigating+Trojan+asteroids+at+the+L4%2FL5+Sun-Earth+Lagrange+points&rft.au=John%2C+K+K%3BGraham%2C+L+D%3BAbell%2C+P+A%3BAnonymous&rft.aulast=John&rft.aufirst=K&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2845.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 9 N1 - PubXState - TX N1 - SuppNotes - Accessed on Nov. 10, 2015 N1 - Last updated - 2016-03-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - asteroids; CubeSat; detection; Earth; in situ; Lagrange points; motions; near-Earth asteroids; near-Earth objects; NEOWISE; numerical models; orbits; telescope methods; TK7 Asteroid 2010; Trojan asteroids; Wide-field Infrared Survey Explorer; WISE ER - TY - JOUR T1 - Lunar and Meteorite Sample Disk for educators AN - 1773797671; 2016-022711 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Foxworth, Suzanne AU - Luckey, M AU - Allen, J AU - McInturff, B AU - Kascak, A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2948 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - ordinary chondrites KW - volcanic rocks KW - stony meteorites KW - igneous rocks KW - government agencies KW - lunar highlands KW - education KW - L chondrites KW - teacher education KW - meteorites KW - educational resources KW - plutonic rocks KW - iron meteorites KW - basalts KW - chondrites KW - lunar soils KW - stony irons KW - Lunar and Meteorite Sample Disk KW - breccia KW - Moon KW - active learning KW - H chondrites KW - carbonaceous chondrites KW - maria KW - achondrites KW - anorthosite KW - early solar system KW - lunar samples KW - NASA KW - regolith KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773797671?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Lunar+and+Meteorite+Sample+Disk+for+educators&rft.au=Foxworth%2C+Suzanne%3BLuckey%2C+M%3BAllen%2C+J%3BMcInturff%2C+B%3BKascak%2C+A%3BAnonymous&rft.aulast=Foxworth&rft.aufirst=Suzanne&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2948.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 4 N1 - PubXState - TX N1 - SuppNotes - Accessed on Nov. 23, 2015 N1 - Last updated - 2016-03-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; active learning; anorthosite; basalts; breccia; carbonaceous chondrites; chondrites; early solar system; education; educational resources; government agencies; H chondrites; igneous rocks; iron meteorites; L chondrites; Lunar and Meteorite Sample Disk; lunar highlands; lunar samples; lunar soils; maria; meteorites; Moon; NASA; ordinary chondrites; plutonic rocks; regolith; stony irons; stony meteorites; teacher education; volcanic rocks ER - TY - JOUR T1 - Thermal emission spectral characterization of sandstones and mudstones AN - 1773797162; 2016-024580 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Thorpe, M T AU - Rogers, A D AU - Bristow, Thomas AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2589 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - silicates KW - mudstone KW - silica minerals KW - grain size KW - sandstone KW - infrared spectra KW - emission spectra KW - laboratory studies KW - sedimentary rocks KW - mineral composition KW - quartz KW - petrography KW - sheet silicates KW - framework silicates KW - spectra KW - glass materials KW - feldspar group KW - clastic rocks KW - carbonates KW - accuracy KW - 06A:Sedimentary petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773797162?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Thermal+emission+spectral+characterization+of+sandstones+and+mudstones&rft.au=Thorpe%2C+M+T%3BRogers%2C+A+D%3BBristow%2C+Thomas%3BAnonymous&rft.aulast=Thorpe&rft.aufirst=M&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2589.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 12 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on Jan. 11, 2016 N1 - Last updated - 2016-03-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - accuracy; carbonates; clastic rocks; emission spectra; feldspar group; framework silicates; glass materials; grain size; infrared spectra; laboratory studies; mineral composition; mudstone; petrography; quartz; sandstone; sedimentary rocks; sheet silicates; silica minerals; silicates; spectra ER - TY - JOUR T1 - The investigation of perchlorate/iron phase mixtures as a possible source of oxygen detected by the Sample Analysis at Mars (SAM) instrument in Gale Crater, Mars AN - 1773797160; 2016-024573 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Sutter, B AU - Heil, E AU - Morris, R V AU - Archer, P D AU - Ming, D W AU - Niles, P B AU - Eigenbrode, J L AU - Franz, H AU - Freissinet, C AU - Glavin, D P AU - McAdam, A C AU - Mahaffy, P AU - Martin-Torres, F Javier AU - Navarro-Gonzalez, R AU - Paz-Zorzano, Maria AU - Stern, J C AU - McKay, C P AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2137 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - silicates KW - ilmenite KW - oxygen KW - goethite KW - olivine group KW - Mars KW - iron KW - temperature KW - Gale Crater KW - laboratory studies KW - hematite KW - fayalite KW - mixing KW - orthosilicates KW - oxides KW - pyrrhotite KW - ferrihydrite KW - perchlorate KW - terrestrial planets KW - nesosilicates KW - planets KW - metals KW - Sample Analysis at Mars Instrument KW - natural analogs KW - brines KW - sulfides KW - magnetite KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773797160?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=The+investigation+of+perchlorate%2Firon+phase+mixtures+as+a+possible+source+of+oxygen+detected+by+the+Sample+Analysis+at+Mars+%28SAM%29+instrument+in+Gale+Crater%2C+Mars&rft.au=Sutter%2C+B%3BHeil%2C+E%3BMorris%2C+R+V%3BArcher%2C+P+D%3BMing%2C+D+W%3BNiles%2C+P+B%3BEigenbrode%2C+J+L%3BFranz%2C+H%3BFreissinet%2C+C%3BGlavin%2C+D+P%3BMcAdam%2C+A+C%3BMahaffy%2C+P%3BMartin-Torres%2C+F+Javier%3BNavarro-Gonzalez%2C+R%3BPaz-Zorzano%2C+Maria%3BStern%2C+J+C%3BMcKay%2C+C+P%3BAnonymous&rft.aulast=Sutter&rft.aufirst=B&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2137.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 12 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Jan. 5, 2016 N1 - Last updated - 2016-05-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - brines; fayalite; ferrihydrite; Gale Crater; goethite; hematite; ilmenite; iron; laboratory studies; magnetite; Mars; metals; mixing; natural analogs; nesosilicates; olivine group; orthosilicates; oxides; oxygen; perchlorate; planets; pyrrhotite; Sample Analysis at Mars Instrument; silicates; sulfides; temperature; terrestrial planets ER - TY - JOUR T1 - Petrology and geochemistry of new paired Martian meteorites 12095 and LAR 12240 AN - 1773797146; 2016-024543 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Funk, R C AU - Brandon, A D AU - Peslier, A H AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2830 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - silicates KW - magnesium KW - stony meteorites KW - oxygen KW - Martian meteorites KW - olivine group KW - melt inclusions KW - fugacity KW - SNC Meteorites KW - meteorites KW - pyroxene group KW - mineral composition KW - olivine KW - inclusions KW - orthosilicates KW - Larkman Nunatak Meteorites KW - zoning KW - chain silicates KW - alkaline earth metals KW - LAR 12095 KW - LAR 12240 KW - achondrites KW - depth KW - nesosilicates KW - shergottite KW - metals KW - magmas KW - petrography KW - crystallization KW - xenocrysts KW - fluid inclusions KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773797146?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Petrology+and+geochemistry+of+new+paired+Martian+meteorites+12095+and+LAR+12240&rft.au=Funk%2C+R+C%3BBrandon%2C+A+D%3BPeslier%2C+A+H%3BAnonymous&rft.aulast=Funk&rft.aufirst=R&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2830.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Dec. 18, 2015 N1 - Last updated - 2016-03-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; alkaline earth metals; chain silicates; crystallization; depth; fluid inclusions; fugacity; inclusions; LAR 12095; LAR 12240; Larkman Nunatak Meteorites; magmas; magnesium; Martian meteorites; melt inclusions; metals; meteorites; mineral composition; nesosilicates; olivine; olivine group; orthosilicates; oxygen; petrography; pyroxene group; shergottite; silicates; SNC Meteorites; stony meteorites; xenocrysts; zoning ER - TY - JOUR T1 - Examining volcanic terrains using in situ geochemical technologies; implication for planetary field geology AN - 1773797084; 2016-024609 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Young, Kelsey E AU - Bleacher, J E AU - Evans, C A AU - Rogers, A D AU - Ito, G AU - Arzoumanian, Z AU - Gendreau, K AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1658 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - United States KW - Hawaii Island KW - Chromatic Mineral Identification and Surface Texture KW - Apollo Program KW - RIS4E KW - Chromatic Mineral Identification and Surface Texture instrument KW - laboratory studies KW - SP Crater KW - X-ray fluorescence spectra KW - Desert RATS KW - spectra KW - Kilauea KW - in situ KW - Moon KW - Hawaii County Hawaii KW - portable instruments KW - Hawaii KW - East Pacific Ocean Islands KW - Desert Research and Technology Studies KW - volcanic fields KW - planets KW - CMIST instrument KW - San Francisco Peaks KW - geochemical methods KW - Arizona KW - Remote, In Situ, and Synchrotron Studies for Science and Exploration KW - Oceania KW - testing KW - Polynesia KW - instruments KW - field studies KW - 04:Extraterrestrial geology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773797084?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Examining+volcanic+terrains+using+in+situ+geochemical+technologies%3B+implication+for+planetary+field+geology&rft.au=Young%2C+Kelsey+E%3BBleacher%2C+J+E%3BEvans%2C+C+A%3BRogers%2C+A+D%3BIto%2C+G%3BArzoumanian%2C+Z%3BGendreau%2C+K%3BAnonymous&rft.aulast=Young&rft.aufirst=Kelsey&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1658.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 10 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Jan. 19, 2016 N1 - Last updated - 2016-03-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Apollo Program; Arizona; Chromatic Mineral Identification and Surface Texture; Chromatic Mineral Identification and Surface Texture instrument; CMIST instrument; Desert RATS; Desert Research and Technology Studies; East Pacific Ocean Islands; field studies; geochemical methods; Hawaii; Hawaii County Hawaii; Hawaii Island; in situ; instruments; Kilauea; laboratory studies; Moon; Oceania; planets; Polynesia; portable instruments; Remote, In Situ, and Synchrotron Studies for Science and Exploration; RIS4E; San Francisco Peaks; SP Crater; spectra; testing; United States; volcanic fields; X-ray fluorescence spectra ER - TY - JOUR T1 - Coordinating chemical and mineralogical analyses of Antarctic dry valley sediments as potential analogs for Mars AN - 1773797056; 2016-024603 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Patel, Shital N AU - Bishop, J L AU - Englert, P AU - Gibson, E K AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1537 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - silicates KW - near-infrared spectra KW - alteration KW - optical spectra KW - Mars KW - Don Juan Pond KW - cores KW - infrared spectra KW - FTIR spectra KW - sedimentary rocks KW - mineral composition KW - major elements KW - gypsum KW - sediments KW - spectra KW - trace elements KW - chemical composition KW - Wright Valley KW - anions KW - chemically precipitated rocks KW - soil profiles KW - sulfates KW - Prospect Mesa KW - evaporites KW - clay minerals KW - terrestrial planets KW - planets KW - hydration KW - allophane KW - Antarctica KW - natural analogs KW - McMurdo dry valleys KW - Victoria Land KW - cations KW - sheet silicates KW - reflectance KW - salt KW - 06A:Sedimentary petrology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773797056?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Coordinating+chemical+and+mineralogical+analyses+of+Antarctic+dry+valley+sediments+as+potential+analogs+for+Mars&rft.au=Patel%2C+Shital+N%3BBishop%2C+J+L%3BEnglert%2C+P%3BGibson%2C+E+K%3BAnonymous&rft.aulast=Patel&rft.aufirst=Shital&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1537.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 5 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on Jan. 15, 2016 N1 - Last updated - 2016-05-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - allophane; alteration; anions; Antarctica; cations; chemical composition; chemically precipitated rocks; clay minerals; cores; Don Juan Pond; evaporites; FTIR spectra; gypsum; hydration; infrared spectra; major elements; Mars; McMurdo dry valleys; mineral composition; natural analogs; near-infrared spectra; optical spectra; planets; Prospect Mesa; reflectance; salt; sedimentary rocks; sediments; sheet silicates; silicates; soil profiles; spectra; sulfates; terrestrial planets; trace elements; Victoria Land; Wright Valley ER - TY - JOUR T1 - Don Quixote Pond; a small scale model of weathering and salt accumulation AN - 1773797041; 2016-024602 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Englert, P AU - Bishop, J L AU - Patel, S N AU - Gibson, E K AU - Koeberl, Christian AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2297 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - halides KW - anhydrite KW - X-ray diffraction data KW - Mars KW - bassanite KW - sedimentary rocks KW - scale models KW - gypsum KW - chlorides KW - Wright Valley KW - chemically precipitated rocks KW - sulfates KW - evaporites KW - weathering KW - halite KW - terrestrial planets KW - planets KW - hydration KW - Antarctica KW - thenardite KW - natural analogs KW - McMurdo dry valleys KW - Victoria Land KW - reflectance KW - salt KW - Don Quixote Pond KW - 06A:Sedimentary petrology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773797041?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Don+Quixote+Pond%3B+a+small+scale+model+of+weathering+and+salt+accumulation&rft.au=Englert%2C+P%3BBishop%2C+J+L%3BPatel%2C+S+N%3BGibson%2C+E+K%3BKoeberl%2C+Christian%3BAnonymous&rft.aulast=Englert&rft.aufirst=P&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2297.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 5 N1 - PubXState - TX N1 - Document feature - illus. incl. sketch map N1 - SuppNotes - Accessed on Jan. 15, 2016 N1 - Last updated - 2016-03-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - anhydrite; Antarctica; bassanite; chemically precipitated rocks; chlorides; Don Quixote Pond; evaporites; gypsum; halides; halite; hydration; Mars; McMurdo dry valleys; natural analogs; planets; reflectance; salt; scale models; sedimentary rocks; sulfates; terrestrial planets; thenardite; Victoria Land; weathering; Wright Valley; X-ray diffraction data ER - TY - JOUR T1 - Complicated magmatism of basaltic shergottites; implications from pyroxene zoning in Zagami AN - 1773797004; 2016-024546 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Niihara, T AU - Misawa, K AU - Nyquist, L E AU - Park, J AU - Hirata, D AU - Yamashita, H AU - Miyamoto, H AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1721 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - silicates KW - stony meteorites KW - X-ray diffraction data KW - Martian meteorites KW - olivine group KW - iron KW - electron probe data KW - SNC Meteorites KW - meteorites KW - pyroxene group KW - mineral composition KW - aluminum KW - olivine KW - orthosilicates KW - basaltic composition KW - zoning KW - chain silicates KW - magmatism KW - achondrites KW - nesosilicates KW - genesis KW - shergottite KW - titanium KW - metals KW - Zagami Meteorite KW - petrography KW - crystallization KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773797004?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Complicated+magmatism+of+basaltic+shergottites%3B+implications+from+pyroxene+zoning+in+Zagami&rft.au=Niihara%2C+T%3BMisawa%2C+K%3BNyquist%2C+L+E%3BPark%2C+J%3BHirata%2C+D%3BYamashita%2C+H%3BMiyamoto%2C+H%3BAnonymous&rft.aulast=Niihara&rft.aufirst=T&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1721.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 6 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Dec. 22, 3015 N1 - Last updated - 2016-03-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; aluminum; basaltic composition; chain silicates; crystallization; electron probe data; genesis; iron; magmatism; Martian meteorites; metals; meteorites; mineral composition; nesosilicates; olivine; olivine group; orthosilicates; petrography; pyroxene group; shergottite; silicates; SNC Meteorites; stony meteorites; titanium; X-ray diffraction data; Zagami Meteorite; zoning ER - TY - JOUR T1 - Attempt of serendipitous science during the Mojave Volatile Prospector field expedition AN - 1773796952; 2016-024614 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Roush, T L AU - Colaprete, A AU - Heldmann, Jennifer L AU - Lim, D S S AU - Cook, A AU - Elphic, R AU - Deans, M C AU - Fluckiger, L AU - Fritzler, E AU - Hunt, David AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1956 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - United States KW - soils KW - near-infrared spectra KW - polar regions KW - Moon KW - moisture KW - surface textures KW - simulation KW - deserts KW - observations KW - California KW - brightness KW - Mojave Volatiles Prospector KW - expeditions KW - alluvial fans KW - natural analogs KW - Mojave Desert KW - solar radiation KW - spectra KW - reflectance KW - solar eclipse KW - instruments KW - field studies KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773796952?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Attempt+of+serendipitous+science+during+the+Mojave+Volatile+Prospector+field+expedition&rft.au=Roush%2C+T+L%3BColaprete%2C+A%3BHeldmann%2C+Jennifer+L%3BLim%2C+D+S+S%3BCook%2C+A%3BElphic%2C+R%3BDeans%2C+M+C%3BFluckiger%2C+L%3BFritzler%2C+E%3BHunt%2C+David%3BAnonymous&rft.aulast=Roush&rft.aufirst=T&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1956.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Jan. 19, 2016 N1 - Last updated - 2016-05-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alluvial fans; brightness; California; deserts; expeditions; field studies; instruments; moisture; Mojave Desert; Mojave Volatiles Prospector; Moon; natural analogs; near-infrared spectra; observations; polar regions; reflectance; simulation; soils; solar eclipse; solar radiation; spectra; surface textures; United States ER - TY - JOUR T1 - Variations in biogeochemistry and greenhouse gas emissions found within different vegetation sites in a tidal marsh located in the Hudson River estuary AN - 1773796633; 2016-023205 AB - Sites located within a tidal brackish marsh in the Hudson River Estuary were investigated to assess whether methane escape and biogeochemical patterns found within the porewater were influenced by vegetation differences. Porewater within the marsh was collected from 0-3 m at 50 cm intervals. The site dominated by invasive Phragmites australis was more inland and was found to have lower conductivity, higher sulfate, lower methane, and lower dissolved inorganic carbon (DIC) concentrations than sites dominated by either native mixed (Spartina patens, Scirpus americanus and Typha angustifolia), or native vegetation (Eleocharis palustris). Sulfate concentrations fell below 0.2 mM at 50 cm and 200 cm at the Eleocharis and mixed vegetation sites, respectively. In the Phragmites site, sulfate concentrations remained above 0.2 mM at all depths measured. For the Phragmites, Eleocharis, and mixed vegetation sites, average DIC concentrations with depth were found to be 9.77 + or - 1.45, 26.58 + or - 14.95, and 28.05 + or - 15.11 mM respectively and average methane concentrations with depth were found to be 0.21 + or - 0.09, 0.55 + or - 0.26, and 0.50 + or - 0.21 mM. DIC and methane concentrations increased with depth in both the Eleocharis and mixed vegetation sites, but remained constant in the Phragmites site. All porewater nitrate concentrations were low (0.0066 + or - 0.0032 mM) and no significant differences were observed between sites. delta (super 13) C-CO (sub 2) values were found to be more depleted and delta (super 13) C-CH (sub 4) values were found to be slightly more enriched within the Phragmites site. Isotopic evidence of methane oxidation was found within the Phragmites porewater at 100 and 150 cm and in the mixed vegetation at 50 cm. These findings suggest that less methanogenesis and more nonfractionating respiration pathways such as sulfate reduction is occurring in sites dominated by Phragmites as compared to sites dominated by native vegetation. JF - Abstracts with Programs - Geological Society of America AU - Corbett, J Elizabeth AU - Martin, Isabella AU - Ho, Lauren AU - Sevilla, Laisa AU - Sun, Eric AU - Zhang, Amy AU - Newton, Robert J AU - Vincent, Susan AU - Peteet, Dorothy M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 94 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773796633?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Variations+in+biogeochemistry+and+greenhouse+gas+emissions+found+within+different+vegetation+sites+in+a+tidal+marsh+located+in+the+Hudson+River+estuary&rft.au=Corbett%2C+J+Elizabeth%3BMartin%2C+Isabella%3BHo%2C+Lauren%3BSevilla%2C+Laisa%3BSun%2C+Eric%3BZhang%2C+Amy%3BNewton%2C+Robert+J%3BVincent%2C+Susan%3BPeteet%2C+Dorothy+M%3BAnonymous&rft.aulast=Corbett&rft.aufirst=J&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=94&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-03-17 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Insights into the Martian regolith from Martian meteorite Northwest Africa 7034 AN - 1769967205; 2016-018860 AB - Everything we know about sedimentary processes on Mars is gleaned from remote sensing observations. Here we report insights from meteorite Northwest Africa (NWA) 7034, which is a water-rich martian regolith breccia that hosts both igneous and sedimentary clasts. The sedimentary clasts in NWA 7034 are poorly-sorted clastic siltstones that we refer to as protobreccia clasts. These protobreccia clasts record aqueous alteration process that occurred prior to breccia formation. The aqueous alteration appears to have occurred at relatively low Eh, high pH conditions based on the co-precipitation of pyrite and magnetite, and the concomitant loss of SiO2 from the system. To determine the origin of the NWA 7034 breccia, we examined the textures and grain-shape characteristics of NWA 7034 clasts. The shapes of the clasts are consistent with rock fragmentation in the absence of transport. Coupled with the clast size distribution, we interpret the protolith of NWA 7034 to have been deposited by atmospheric rainout resulting from pyroclastic eruptions and/or asteroid impacts. Cross-cutting and inclusion relationships and U-Pb data from zircon, baddelleyite, and apatite indicate NWA 7034 lithification occurred at 1.4-1.5 Ga, during a short-lived hydrothermal event at 600-700 degrees C that was texturally imprinted upon the submicron groundmass. The hydrothermal event caused Pb-loss from apatite and U-rich metamict zircons, and it caused partial transformation of pyrite to submicron mixtures of magnetite and maghemite, indicating the fluid had higher Eh than the fluid that caused pyrite-magnetite precipitation in the protobreccia clasts. NWA 7034 also hosts ancient 4.4 Ga crustal materials in the form of baddelleyites and zircons, providing up to a 2.9 Ga record of martian geologic history. This work demonstrates the incredible value of sedimentary basins as scientific targets for Mars sample return missions, but it also highlights the importance of targeting samples that have not been overprinted by metamorphic processes, which is the case for NWA 7034. JF - Abstracts with Programs - Geological Society of America AU - McCubbin, Francis AU - Boyce, Jeremy AU - Szabo, Timea AU - Santos, Alison AU - Tartese, Romain AU - Domokos, Gabor AU - Vazquez, Jorge A AU - Moser, Desmond E AU - Jerolmack, Douglas J AU - Keller, Lindsay P AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 216 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 05B:Petrology of meteorites and tektites KW - 03:Geochronology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1769967205?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Insights+into+the+Martian+regolith+from+Martian+meteorite+Northwest+Africa+7034&rft.au=McCubbin%2C+Francis%3BBoyce%2C+Jeremy%3BSzabo%2C+Timea%3BSantos%2C+Alison%3BTartese%2C+Romain%3BDomokos%2C+Gabor%3BVazquez%2C+Jorge+A%3BMoser%2C+Desmond+E%3BJerolmack%2C+Douglas+J%3BKeller%2C+Lindsay+P%3BAnonymous&rft.aulast=McCubbin&rft.aufirst=Francis&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=216&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-03-03 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Opportunity in situ geologic context of aqueous alteration along offsets in the rim of the Endeavour Crater AN - 1769966662; 2016-020678 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Crumpler, Larry S AU - Arvidson, R E AU - Farrand, W H AU - Golombek, M P AU - Grant, J A AU - Ming, D W AU - Mittlefehldt, D W AU - Parker, T J AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2209 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - silicates KW - transverse faults KW - Shoemaker Formation KW - Noachian KW - Mars KW - mapping KW - preferential flow KW - Mars Exploration Rover KW - fractures KW - Solander Point KW - outcrops KW - Grasberg Formation KW - Wdowiak Ridge KW - faults KW - Cook Haven KW - Burns Formation KW - in situ KW - sulfates KW - Opportunity Rover KW - smectite KW - mylonitization KW - clay minerals KW - terrestrial planets KW - aqueous alteration KW - planets KW - sheet silicates KW - Matijevic Formation KW - Endeavour Crater KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1769966662?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Opportunity+in+situ+geologic+context+of+aqueous+alteration+along+offsets+in+the+rim+of+the+Endeavour+Crater&rft.au=Crumpler%2C+Larry+S%3BArvidson%2C+R+E%3BFarrand%2C+W+H%3BGolombek%2C+M+P%3BGrant%2C+J+A%3BMing%2C+D+W%3BMittlefehldt%2C+D+W%3BParker%2C+T+J%3BAnonymous&rft.aulast=Crumpler&rft.aufirst=Larry&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2209.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 9 N1 - PubXState - TX N1 - Document feature - sketch map N1 - SuppNotes - Accessed Oct. 27, 2015 N1 - Last updated - 2016-03-03 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - aqueous alteration; Burns Formation; clay minerals; Cook Haven; Endeavour Crater; faults; fractures; Grasberg Formation; in situ; mapping; Mars; Mars Exploration Rover; Matijevic Formation; mylonitization; Noachian; Opportunity Rover; outcrops; planets; preferential flow; sheet silicates; Shoemaker Formation; silicates; smectite; Solander Point; sulfates; terrestrial planets; transverse faults; Wdowiak Ridge ER - TY - JOUR T1 - Oxychlorine species on Mars; the Gale Crater story AN - 1769966633; 2016-020683 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Archer, P Doug, Jr AU - Ming, D W AU - Sutter, B AU - Morris, R V AU - Clark, B C AU - Mahaffy, P AU - Wray, J J AU - Fairen, A G AU - Gellert, R AU - Yen, A S AU - Blake, D F AU - Vaniman, D T AU - Glavin, D P AU - Eigenbrode, J L AU - Trainer, M G AU - Navarro-Gonzalez, R AU - McKay, C P AU - Freissinet, C AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2971 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - oxygen KW - Alpha Particle X-ray Spectrometer KW - halogens KW - Windjana KW - Mars KW - Gale Crater KW - sedimentary rocks KW - pyrolysis KW - John Klein Outcrop KW - spectra KW - chlorine KW - mudstone KW - Confidence Hills KW - oxychlorine KW - X-ray spectra KW - Sheepbed Mudstone KW - Rocknest KW - perchlorate KW - terrestrial planets KW - planets KW - evolved gas analysis KW - Sample Analysis at Mars Instrument KW - Mars Science Laboratory KW - clastic rocks KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1769966633?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Oxychlorine+species+on+Mars%3B+the+Gale+Crater+story&rft.au=Archer%2C+P+Doug%2C+Jr%3BMing%2C+D+W%3BSutter%2C+B%3BMorris%2C+R+V%3BClark%2C+B+C%3BMahaffy%2C+P%3BWray%2C+J+J%3BFairen%2C+A+G%3BGellert%2C+R%3BYen%2C+A+S%3BBlake%2C+D+F%3BVaniman%2C+D+T%3BGlavin%2C+D+P%3BEigenbrode%2C+J+L%3BTrainer%2C+M+G%3BNavarro-Gonzalez%2C+R%3BMcKay%2C+C+P%3BFreissinet%2C+C%3BAnonymous&rft.aulast=Archer&rft.aufirst=P&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2971.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 15 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Oct. 28, 2015 N1 - Last updated - 2016-05-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Alpha Particle X-ray Spectrometer; chlorine; clastic rocks; Confidence Hills; evolved gas analysis; Gale Crater; halogens; John Klein Outcrop; Mars; Mars Science Laboratory; mudstone; oxychlorine; oxygen; perchlorate; planets; pyrolysis; Rocknest; Sample Analysis at Mars Instrument; sedimentary rocks; Sheepbed Mudstone; spectra; terrestrial planets; Windjana; X-ray spectra ER - TY - JOUR T1 - Germanium enrichments in sedimentary rocks in Gale Crater, Mars; constraining the timing of alteration and character of the protolith AN - 1769966622; 2016-020680 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Berger, Jeff AU - Schmidt, M E AU - Gellert, R AU - Campbell, J L AU - Boyd, N I AU - Elliott, B E AU - Fisk, M R AU - King, P L AU - Ming, D W AU - Perrett, G M AU - Thompson, L M AU - VanBommel, S J AU - Yen, A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1564 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - alteration KW - Alpha Particle X-ray Spectrometer KW - enrichment KW - Mars KW - silicon KW - Gale Crater KW - Aeolis Mons KW - sedimentary rocks KW - Pahrump KW - Curiosity Rover KW - tracers KW - spectra KW - heterogeneity KW - Peace Vallis KW - protoliths KW - X-ray spectra KW - weathering KW - terrestrial planets KW - aqueous alteration KW - planets KW - metals KW - diagenesis KW - germanium KW - Mars Science Laboratory KW - mobilization KW - chemical fractionation KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1769966622?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Germanium+enrichments+in+sedimentary+rocks+in+Gale+Crater%2C+Mars%3B+constraining+the+timing+of+alteration+and+character+of+the+protolith&rft.au=Berger%2C+Jeff%3BSchmidt%2C+M+E%3BGellert%2C+R%3BCampbell%2C+J+L%3BBoyd%2C+N+I%3BElliott%2C+B+E%3BFisk%2C+M+R%3BKing%2C+P+L%3BMing%2C+D+W%3BPerrett%2C+G+M%3BThompson%2C+L+M%3BVanBommel%2C+S+J%3BYen%2C+A%3BAnonymous&rft.aulast=Berger&rft.aufirst=Jeff&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1564.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 14 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Oct. 28, 2015 N1 - Last updated - 2016-05-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Aeolis Mons; Alpha Particle X-ray Spectrometer; alteration; aqueous alteration; chemical fractionation; Curiosity Rover; diagenesis; enrichment; Gale Crater; germanium; heterogeneity; Mars; Mars Science Laboratory; metals; mobilization; Pahrump; Peace Vallis; planets; protoliths; sedimentary rocks; silicon; spectra; terrestrial planets; tracers; weathering; X-ray spectra ER - TY - JOUR T1 - The nitrate/perchlorate ratio on Mars as an indicator for habitability AN - 1769966578; 2016-020684 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Stern, Jennifer C AU - Sutter, B AU - McKay, C P AU - Navarro-Gonzalez, R AU - Freissinet, C AU - Conrad, P G AU - Mahaffy, P R AU - Archer, P D, Jr AU - Ming, D W AU - Niles, P B AU - Zorzano, M P AU - Martin-Torres, F J AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2590 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - terrestrial environment KW - astrobiology KW - Mars KW - Chile KW - nitrogen KW - Gale Crater KW - Atacama Desert KW - Curiosity Rover KW - nitrate ion KW - fixation KW - in situ KW - arid environment KW - nitric oxide KW - nitrates KW - indicators KW - perchlorate KW - geochemical cycle KW - terrestrial planets KW - planets KW - nitrogen cycle KW - South America KW - Antarctica KW - evolved gas analysis KW - Sample Analysis at Mars Instrument KW - natural analogs KW - McMurdo dry valleys KW - Mars Science Laboratory KW - Victoria Land KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1769966578?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=The+nitrate%2Fperchlorate+ratio+on+Mars+as+an+indicator+for+habitability&rft.au=Stern%2C+Jennifer+C%3BSutter%2C+B%3BMcKay%2C+C+P%3BNavarro-Gonzalez%2C+R%3BFreissinet%2C+C%3BConrad%2C+P+G%3BMahaffy%2C+P+R%3BArcher%2C+P+D%2C+Jr%3BMing%2C+D+W%3BNiles%2C+P+B%3BZorzano%2C+M+P%3BMartin-Torres%2C+F+J%3BAnonymous&rft.aulast=Stern&rft.aufirst=Jennifer&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2590.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 12 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Nov. 2, 2015 N1 - Last updated - 2016-05-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Antarctica; arid environment; astrobiology; Atacama Desert; Chile; Curiosity Rover; evolved gas analysis; fixation; Gale Crater; geochemical cycle; in situ; indicators; Mars; Mars Science Laboratory; McMurdo dry valleys; natural analogs; nitrate ion; nitrates; nitric oxide; nitrogen; nitrogen cycle; perchlorate; planets; Sample Analysis at Mars Instrument; South America; terrestrial environment; terrestrial planets; Victoria Land ER - TY - JOUR T1 - Reconstructing Helene's surface history; plastics and snow AN - 1769966453; 2016-020693 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Umurhan, O M AU - Howard, A D AU - Moore, J M AU - Schenk, P AU - White, O L AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2400 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - icy satellites KW - accretion KW - impact features KW - erosion KW - finite difference analysis KW - grain size KW - plastic flow KW - digital terrain models KW - weathering KW - slumping KW - Cassini-Huygens Mission KW - ice KW - snow KW - mass movements KW - surface features KW - basins KW - MARSSIM model KW - impact craters KW - reconstruction KW - algorithms KW - satellites KW - Helene Satellite KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1769966453?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Reconstructing+Helene%27s+surface+history%3B+plastics+and+snow&rft.au=Umurhan%2C+O+M%3BHoward%2C+A+D%3BMoore%2C+J+M%3BSchenk%2C+P%3BWhite%2C+O+L%3BAnonymous&rft.aulast=Umurhan&rft.aufirst=O&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2400.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 5 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Nov. 3, 2015 N1 - Last updated - 2016-03-03 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - accretion; algorithms; basins; Cassini-Huygens Mission; digital terrain models; erosion; finite difference analysis; grain size; Helene Satellite; ice; icy satellites; impact craters; impact features; MARSSIM model; mass movements; plastic flow; reconstruction; regolith; satellites; slumping; snow; surface features; weathering ER - TY - JOUR T1 - Rheology of lava on Europa and the emergence of cryovolcanic domes AN - 1769966393; 2016-020685 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Quick, Lynnae C AU - Glaze, Lori S AU - Baloga, Steve M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1060 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - icy satellites KW - cryovolcanism KW - numerical models KW - Europa Satellite KW - strength KW - viscous materials KW - effusion KW - fluid flow KW - Galilean satellites KW - depth KW - viscosity KW - lava KW - rheology KW - ice KW - Boussinesq equation KW - Newtonian fluid KW - satellites KW - domes KW - crust KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1769966393?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Rheology+of+lava+on+Europa+and+the+emergence+of+cryovolcanic+domes&rft.au=Quick%2C+Lynnae+C%3BGlaze%2C+Lori+S%3BBaloga%2C+Steve+M%3BAnonymous&rft.aulast=Quick&rft.aufirst=Lynnae&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1060.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 29 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Nov. 2, 2015 N1 - Last updated - 2016-03-03 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Boussinesq equation; crust; cryovolcanism; depth; domes; effusion; Europa Satellite; fluid flow; Galilean satellites; ice; icy satellites; lava; Newtonian fluid; numerical models; rheology; satellites; strength; viscosity; viscous materials ER - TY - JOUR T1 - Geophysical evidence supporting an early as well as late heavy bombardment on the Moon AN - 1769966372; 2016-020667 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Frey, Herbert V AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1125 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - cratering KW - impact features KW - Moon KW - late heavy bombardment KW - Apollo Program KW - impacts KW - gravity anomalies KW - topography KW - chronology KW - age KW - depressions KW - LOLA KW - Bouguer anomalies KW - impact craters KW - early heavy bombardment KW - temporal distribution KW - Mare Nectaris KW - Apollo 16 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1769966372?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Geophysical+evidence+supporting+an+early+as+well+as+late+heavy+bombardment+on+the+Moon&rft.au=Frey%2C+Herbert+V%3BAnonymous&rft.aulast=Frey&rft.aufirst=Herbert&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/1125.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 14 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Oct. 23, 2015 N1 - Last updated - 2016-03-03 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - age; Apollo 16; Apollo Program; Bouguer anomalies; chronology; cratering; depressions; early heavy bombardment; gravity anomalies; impact craters; impact features; impacts; late heavy bombardment; LOLA; Mare Nectaris; Moon; temporal distribution; topography ER - TY - JOUR T1 - Landform evolution modeling of specific fluvially eroded physiographic units on Titan AN - 1769966289; 2016-020694 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Moore, Jeff M AU - Howard, A D AU - Schenk, P M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2457 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - lacustrine features KW - icy satellites KW - erosion KW - lakes KW - Ganymede Satellite KW - uplands KW - Galilean satellites KW - alluvial plains KW - digital terrain models KW - simulation KW - topography KW - lowlands KW - deltas KW - surface features KW - Titan Satellite KW - satellites KW - fractals KW - landform evolution KW - roughness KW - highlands KW - weathering KW - models KW - terrains KW - fluvial features KW - depressions KW - landscapes KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1769966289?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Landform+evolution+modeling+of+specific+fluvially+eroded+physiographic+units+on+Titan&rft.au=Moore%2C+Jeff+M%3BHoward%2C+A+D%3BSchenk%2C+P+M%3BAnonymous&rft.aulast=Moore&rft.aufirst=Jeff&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2457.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 8 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Nov. 4, 2015 N1 - Last updated - 2016-03-03 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alluvial plains; deltas; depressions; digital terrain models; erosion; fluvial features; fractals; Galilean satellites; Ganymede Satellite; highlands; icy satellites; lacustrine features; lakes; landform evolution; landscapes; lowlands; models; roughness; satellites; simulation; surface features; terrains; Titan Satellite; topography; uplands; weathering ER - TY - JOUR T1 - Radar-reflective minerals investigated under Venus near-surface conditions AN - 1769964475; 2016-020647 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Kohler, E AU - Port, S AU - Chevrier, V AU - Johnson, N AU - Lacy, C AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2563 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - surface properties KW - experimental studies KW - volcanic rocks KW - X-ray diffraction data KW - tellurium KW - igneous rocks KW - altitude KW - Venus KW - coloradoite KW - stability KW - radar methods KW - bismuthinite KW - temperature KW - terrestrial planets KW - planets KW - tellurides KW - dielectric properties KW - basalts KW - atmospheric pressure KW - tellurobismuthite KW - pyrite KW - sulfides KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1769964475?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Radar-reflective+minerals+investigated+under+Venus+near-surface+conditions&rft.au=Kohler%2C+E%3BPort%2C+S%3BChevrier%2C+V%3BJohnson%2C+N%3BLacy%2C+C%3BAnonymous&rft.aulast=Kohler&rft.aufirst=E&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2563.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 16 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on Oct. 14, 2015 N1 - Last updated - 2016-03-03 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - altitude; atmospheric pressure; basalts; bismuthinite; coloradoite; dielectric properties; experimental studies; igneous rocks; planets; pyrite; radar methods; stability; sulfides; surface properties; tellurides; tellurium; tellurobismuthite; temperature; terrestrial planets; Venus; volcanic rocks; X-ray diffraction data ER - TY - JOUR T1 - Space weathering of Itokawa particles; implications for regolith evolution AN - 1769964338; 2016-020651 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Berger, Eve L AU - Keller, Lindsay P AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2351 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - particle tracks KW - Itokawa Asteroid KW - irradiation KW - asteroids KW - solar wind KW - electron microscopy data KW - exposure age KW - weathering KW - TEM data KW - depth KW - morphology KW - focused ion beam KW - space weathering KW - dynamics KW - residence time KW - thickness KW - S-type asteroids KW - cosmic rays KW - regolith KW - particles KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1769964338?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Space+weathering+of+Itokawa+particles%3B+implications+for+regolith+evolution&rft.au=Berger%2C+Eve+L%3BKeller%2C+Lindsay+P%3BAnonymous&rft.aulast=Berger&rft.aufirst=Eve&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2351.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 13 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Oct. 19, 2015 N1 - Last updated - 2016-03-03 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - asteroids; cosmic rays; depth; dynamics; electron microscopy data; exposure age; focused ion beam; irradiation; Itokawa Asteroid; morphology; particle tracks; particles; regolith; residence time; S-type asteroids; solar wind; space weathering; TEM data; thickness; weathering ER - TY - JOUR T1 - Jamaica Bay, New York blue carbon and its history AN - 1765876189; 2016-016434 AB - The carbon that is sequestered in coastal ecosystems and intertidal marshes is known as "blue carbon." Due to ongoing coastal development and sea level rise, marshes are being destroyed and their valuable ecosystem services lost. We investigated the depth of several tidal marshes, and analyzed sediment cores to determine the amount of organic matter and carbon sequestered within them. We engaged in field study, and focused on loss-on-ignition (LOI) at three marshes in Jamaica Bay: Yellow Bar, East High Meadow and JoCo. Maps of Jamaica Bay from 250 years to the present are used to determine why there is a shift in organic matter and a decline in non-organic matter within the last estimated 300 years. We uncovered two possible impacts: i) the accretion rate of the Rockaway Spit over the last 250 years has elongated it, limiting the flow of seawater into the bay, and ii) deep dredges that may have altered the water pattern affecting sedimentation within the bay itself. JF - Abstracts with Programs - Geological Society of America AU - Peteet, Dorothy M AU - Reza, Mohammad AU - Kovari, Stephen AU - Stern, Stephanie AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 329 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 06A:Sedimentary petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765876189?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Jamaica+Bay%2C+New+York+blue+carbon+and+its+history&rft.au=Peteet%2C+Dorothy+M%3BReza%2C+Mohammad%3BKovari%2C+Stephen%3BStern%2C+Stephanie%3BAnonymous&rft.aulast=Peteet&rft.aufirst=Dorothy&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=329&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-02-18 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Diagenetic crystal growth in the Murray Formation, Gale Crater, Mars AN - 1765872748; 2016-014649 AB - The Pahrump region (Gale Crater, Mars) marks a critical transition between sedimentary environments dominated by alluvial-to-fluvial materials associated with the Gale crater rim, and depositional environments fundamentally linked to the crater's central mound, Mount Sharp. At Pahrump, the Murray formation consists of an approximately 14-meter thick succession dominated by massive to finely laminated mudstone with occasional interbeds of cross-bedded sandstone, and is best interpreted as a dominantly lacustrine environment containing tongues of prograding fluvial material. Murray formation mudstones contain abundant evidence for early diagenetic mineral precipitation and its subsequent removal by later diagenetic processes. Lenticular mineral growth is particularly common within lacustrine mudstone deposits at the Pahrump locality. High-resolution MAHLI images taken by the Curiosity rover permit detailed morphological and spatial analysis of these features. Millimeter-scale lenticular features occur in massive to well-laminated mudstone lithologies and are interpreted as pseudomorphs after calcium sulfate. The distribution and orientation of lenticular features suggests deposition at or near the sediment-water (or sediment-air) interface. Retention of chemical signals similar to host rock suggests that original precipitation was likely poikilotopic, incorporating substantial amounts of the primary matrix. Although poikilotopic crystal growth is common in burial environments, it also occurs during early diagenetic crystal growth within unlithified sediment where high rates of crystal growth are common. Loss of original calcium sulfate mineralogy suggests dissolution by mildly acidic, later-diagenetic fluids. As with lenticular voids observed at Meridiani by the Opportunity Rover, these features indicate that calcium sulfate deposition may have been widespread on early Mars; dissolution of depositional and early diagenetic minerals is a likely source for both calcium and sulfate ion-enrichment in burial fluids that precipitated in ubiquitous late-stage hydrofracture veins. JF - Abstracts with Programs - Geological Society of America AU - Kah, L C AU - Kronyak, R E AU - Ming, Douglas W AU - Grotzinger, J P AU - Schieber, J AU - Sumner, D Y AU - Edgett, K S AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 267 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765872748?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Diagenetic+crystal+growth+in+the+Murray+Formation%2C+Gale+Crater%2C+Mars&rft.au=Kah%2C+L+C%3BKronyak%2C+R+E%3BMing%2C+Douglas+W%3BGrotzinger%2C+J+P%3BSchieber%2C+J%3BSumner%2C+D+Y%3BEdgett%2C+K+S%3BAnonymous&rft.aulast=Kah&rft.aufirst=L&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=267&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-02-18 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Reactive oxygen species generation by lunar simulants AN - 1765871824; 2016-015656 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Kaur, Jasmeet AU - Schoonen, Martin A AU - Rickman, Douglas AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1142 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - water KW - mineral composition KW - toxicity KW - sampling KW - Moon KW - clastic sediments KW - lunar crust KW - dust KW - sediments KW - Apollo Program KW - geochemistry KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765871824?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Reactive+oxygen+species+generation+by+lunar+simulants&rft.au=Kaur%2C+Jasmeet%3BSchoonen%2C+Martin+A%3BRickman%2C+Douglas%3BAnonymous&rft.aulast=Kaur&rft.aufirst=Jasmeet&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/1142.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 8 N1 - PubXState - TX N1 - Document feature - illus. N1 - Last updated - 2016-02-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Apollo Program; clastic sediments; dust; geochemistry; lunar crust; mineral composition; Moon; sampling; sediments; toxicity; water ER - TY - JOUR T1 - Diagenetic mineralogy at Gale Crater, Mars AN - 1765870846; 2016-014648 AB - Three years into exploration of sediments in Gale crater on Mars, the Mars Science Laboratory rover Curiosity has provided data on several modes and episodes of diagenetic mineral formation. Curiosity determines mineralogy principally by X-ray diffraction (XRD), but with supporting data from thermal-release profiles of volatiles, bulk chemistry, passive spectroscopy, and laser-induced breakdown spectra of targeted spots. Mudstones at Yellowknife Bay, within the landing ellipse, contain approximately 20% phyllosilicate that we interpret as authigenic smectite formed by basalt weathering in relatively dilute water, with associated formation of authigenic magnetite as in experiments by Tosca and Hurowitz [Goldschmidt 2014]. Varied interlayer spacing of the smectite, collapsed at approximately 10 Aa or expanded at approximately 13.2 Aa, is evidence of localized diagenesis that may include partial intercalation of metal-hydroxyl groups in the approximately 13.2 Aa material. Subsequent sampling of stratigraphically higher Windjana sandstone revealed sediment with multiple sources, possible concentration of detrital magnetite, and minimal abundance of diagenetic minerals. Most recent sampling has been of lower strata at Mount Sharp, where diagenesis is widespread and varied. Here XRD shows that hematite first becomes abundant and products of diagenesis include jarosite and cristobalite. In addition, bulk chemistry identifies Mg-sulfate concretions that may be amorphous or crystalline. Throughout Curiosity's traverse, later diagenetic fractures (and rarer nodules) of mm to dm scale are common and surprisingly constant and simple in Ca-sulfate composition. Other sulfates (Mg,Fe) appear to be absent in this later diagenetic cycle, and circumneutral solutions are indicated. Equally surprising is the rarity of gypsum and common occurrence of bassanite and anhydrite. Bassanite, rare on Earth, plays a major role at this location on Mars. Dehydration of gypsum to bassanite in the dry atmosphere of Mars has been proposed but considered unlikely based on lab studies of dehydration kinetics in powdered samples. Dehydration is even less likely for bulk vein samples, as lab data show dehydration rates one to two orders of magnitude slower in bulk samples than in powders. On Mars, exposure ages of 100 Ma or more may be a significant factor in dehydration of hydrous phases. JF - Abstracts with Programs - Geological Society of America AU - Vaniman, David AU - Blake, David AU - Bristow, Thomas F AU - Chipera, Steve AU - Gellert, Ralf AU - Ming, Douglas W AU - Morris, Richard V AU - Rampe, E B AU - Rapin, William AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 267 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765870846?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Diagenetic+mineralogy+at+Gale+Crater%2C+Mars&rft.au=Vaniman%2C+David%3BBlake%2C+David%3BBristow%2C+Thomas+F%3BChipera%2C+Steve%3BGellert%2C+Ralf%3BMing%2C+Douglas+W%3BMorris%2C+Richard+V%3BRampe%2C+E+B%3BRapin%2C+William%3BAnonymous&rft.aulast=Vaniman&rft.aufirst=David&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=267&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-02-18 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Models for compositional variations in the Murray Formation Mudstone, Gale Crater, Mars AN - 1765870506; 2016-014645 AB - The Murray formation, Gale crater, Mars is distinctive in containing elevated silica compositions relative to other Gale rocks exposed in outcrop. These high silica rocks are also marked by their fine grain size of <60-70 microns and mm-scale lamina. Lamination is characteristically parallel, with horizontal to gently inclined attitude, and absence of cross-stratification. Sediment-filled mudcracks (evidence of desiccation) are absent, as are outsized clasts, such as pyroclasts, impact ejecta blocks, or glacial dropstones. Early to late diagenetic textures are present including dendritic concretions, prismatic crystal pseudomorphs, and calcium sulfate-filled fractures. High silica rocks show repeating characteristic lamina thicknesses reminiscent of terrestrial lake sediments. Deposition is likely to have occurred in a pro-delta environment where clastic sediment was delivered as river plumes, and perhaps also as authigenic phases from lake waters. Chemical and mineralogical analyses indicate that the majority of Murray formation mudstones are composed of roughly equal proportions of clastic igneous minerals, and secondary phases (e.g., phyllosilicates), including amorphous mineraloids of probable secondary origin. The mudstones are sourced by incipiently weathered basalt, and are possibly cemented by Ca-Mg-sulfates and silica, the latter in the form of cristobalite or opal. Redox cycling is indicated by variable amounts of hematite, magnetite, and jarosite, and likely reflects dynamic primary lake water and/or diagenetic redox conditions. For a smaller number of samples silica contents reach values as high as approximately 70-85 wt%. The fine-scale lamination is not disrupted by post-depositional weathering or alteration processes. Hydrothermal and acid-sulfate weathering mechanisms are frequently invoked to explain the occurrence of siliceous rocks on Mars, and it is also possible that silica enrichment represent distal silicic volcanic ash or eroded silica-rich detritus. However, available sedimentological, geochemical, and mineralogic data may best support a fourth hypothesis: that silica enrichment occurred via chemical precipitation as sediment within a subaqueous lake setting, perhaps similar to terrestrial banded iron formation. JF - Abstracts with Programs - Geological Society of America AU - Grotzinger, John P AU - Hurowitz, Joel A AU - Blake, David AU - Fischer, Woodward W AU - Fraeman, Abigail A AU - Gellert, Ralf AU - McLennan, Scott M AU - Sumner, Dawn AU - Vaniman, David AU - Wiens, R C AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 266 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765870506?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Models+for+compositional+variations+in+the+Murray+Formation+Mudstone%2C+Gale+Crater%2C+Mars&rft.au=Grotzinger%2C+John+P%3BHurowitz%2C+Joel+A%3BBlake%2C+David%3BFischer%2C+Woodward+W%3BFraeman%2C+Abigail+A%3BGellert%2C+Ralf%3BMcLennan%2C+Scott+M%3BSumner%2C+Dawn%3BVaniman%2C+David%3BWiens%2C+R+C%3BAnonymous&rft.aulast=Grotzinger&rft.aufirst=John&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=266&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-02-18 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Distinct igneous APXS rock compositions on Mars from Pathfinder, MER and MSL AN - 1765870161; 2016-014651 AB - The alpha particle x-ray spectrometer (APXS) on all four Mars Rovers returned geochemical data from about 1000 rocks and soils along the combined traverses of over 50 kilometers. Here we discuss rocks likely of igneous origin, which might represent source materials for the soils and sediments identified along the traverses. Adirondack-type basalts, abundant in the plains of Gusev Crater, are primitive, olivine bearing basalts. They resemble in composition the basaltic soils encountered at all landing sites, except the ubiquitous elevated S, Cl and Zn in soils. They have been postulated to represent closely the average Martian crust composition. The recently identified new Martian meteorite Black Beauty has similar overall geochemical composition, very distinct from the earlier established SNC meteorites. The rim of the Noachian crater Endeavour, predating the sulfate-bearing Burns formation at Meridiani Planum, also resembles closely the composition of Adirondack basalts. At Gale Crater, the MSL Curiosity rover identified a felsic rock type exemplified by the mugearitic float rock JakeM, which is widespread along the traverse at Gale. While a surprise at that time, possibly related more evolved, alkaline rocks had been previously identified on Mars. Spirit encountered the Wishstone rocks in the Columbia Hills with approximately 6% Na (sub 2) O+K (sub 2) O, 15% Al (sub 2) O (sub 3) and low 12% FeO. Pathfinder rocks with elevated K and Na and >50% SiO (sub 2) were postulated to be andesitic. Recently Opportunity encountered the rock Jean Baptiste Charbonneau with >15% Al (sub 2) O (sub 3) , >50% SiO (sub 2) and approximately 10% FeO. A common characteristic all these rocks is the very low abundance of Cr, Ni and Zn, and an Fe/Mn ratio of about 50, indicating an unaltered Fe mineralogy. Beside these likely igneous rock types, which occurred always in several rocks, a few unique rocks were encountered, e.g. Bounce Rock, a pyroxene-bearing ejecta rock fragment resembling the Shergottite EETA 79001B meteorite. The APXS data can be used to relate the findings of all 4 landing sites, constrain the water to rock ratio of sediments or imply source rock provenance. Beyond that the capability to quantify important volatile elements like P, S, Cl, and Br have provided new insights into the chemistry and the environment present during the formation of the sediments. JF - Abstracts with Programs - Geological Society of America AU - Gellert, Ralf AU - Arvidson, Raymond E AU - Clark, Benton, III AU - Ming, Douglas W AU - Morris, Richard V AU - Squyres, Steven W AU - Yen, Albert S AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 268 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765870161?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Distinct+igneous+APXS+rock+compositions+on+Mars+from+Pathfinder%2C+MER+and+MSL&rft.au=Gellert%2C+Ralf%3BArvidson%2C+Raymond+E%3BClark%2C+Benton%2C+III%3BMing%2C+Douglas+W%3BMorris%2C+Richard+V%3BSquyres%2C+Steven+W%3BYen%2C+Albert+S%3BAnonymous&rft.aulast=Gellert&rft.aufirst=Ralf&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=268&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-02-18 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - The mineralogy, crystal chemistry, and origin of freshwater ferromanganese nodules from Green Bay, Lake Michigan AN - 1765870048; 2016-014663 AB - The mineralogy, incorporation mechanism of As, Ba, Co, Ni, and Zn, and origin of ferromanganese nodules from Green Bay were characterized by in-situ XRD, EM, HRTEM, Z-contrast imaging, and ab initio calculations using DFT method. Green Bay nodules can be divided into three types: Mn-rich nodules, Fe-Mn nodules, and Fe-rich nodules. Mn-rich nodules are composed of todorokite, birnessite, and buserite. Fe-rich nodules consist of feroxyhyte, goethite, 2-line ferrihydrite, and an FeOOH nano-phase with guyanaite structure. Most of the nodules appear to be concretionary structure of alternating Mn- and Fe-rich bands with a nucleus. The nuclei commonly have a nucleus of reddish feldspar containing hematite micro-crystals. The hexagonal structure of cations in core minerals can serve as nucleation sites for Fe/Mn hydroxides. For Mn-oxides, XRD patterns indicate transformation from birnessite to todorokite after precipitation. TEM-EDS reveal that Ba, Co, Ni, and Zn are associated with todorokite, whereas Ca is associated with the interlayer of buserite. Todorkite has an average chemical formula of Ba (super 2+) (sub 0.28) (Zn (super +2) (sub 0.13) , Co (super 3+) (sub 0.05) , Ni (super 2+) (sub 0.02) ) (Mn (super 4+) (sub 5.01) , Mn (super 3+) (sub 0.54) , Fe (super 3+) (sub 0.38) , Co (super 3+) (sub 0.05) , Ni (super 2+) (sub 0.02) )O (sub 12) .nH (sub 2) O. Ba (super 2+) is the main cation in the structure tunnels of todorokite. The chemical formula of Ca-buserite is Ca (super 2+) (sub 0.19) (Mn (super 4+) (sub 1.62) , Mn (super 3+) (sub 0.38) )O (sub 4) .nH (sub 2) O. For Fe-hydroxides, Z-contrast images identified FeOOH nano-domains with guyanaite structure intergrown with goethite. DFT calculation revealed goethite is more stable phase than proto-goethite. Overall, it is proposed that ordering between Fe and vacancies in octahedral sites resulted in transformation from feroxyhyte to goethite through intermediate structure of proto-goethite. Combining Z-contrast images and TEM-EDS reveal that the arsenate AsO (sub 4) tetrahedron may be preferentially retained at the proto-goethite surface through tridentate attachment. Alternating Fe/Mn banded FFN are formed by slow oscillating redox conditions at the sediment-water interface. Physical characteristic and mineralogy of Green Bay FFN may be an analog for the formation of Mars "blueberries" in early stage formation via groundwater diagenesis. The amorphous component of Mars soils at Gale Crater might have similar Fe nano-phases with Green Bay FFN according to CheMin's XRD and APXS. JF - Abstracts with Programs - Geological Society of America AU - Lee, Seungyeol AU - Shen, Zhizhang AU - Xu, Huifang AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 270 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 02C:Geochemistry of rocks, soils, and sediments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765870048?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=The+mineralogy%2C+crystal+chemistry%2C+and+origin+of+freshwater+ferromanganese+nodules+from+Green+Bay%2C+Lake+Michigan&rft.au=Lee%2C+Seungyeol%3BShen%2C+Zhizhang%3BXu%2C+Huifang%3BAnonymous&rft.aulast=Lee&rft.aufirst=Seungyeol&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=270&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-02-18 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - In-situ evidence for alteration by acid fog on Husband Hill, Gusev Crater, Mars AN - 1765869730; 2016-014654 AB - In 2004, Tosca et al. ("Acid-sulfate weathering of synthetic Martian basalt: The acid fog model revisited", doi:10.1029/2003JE002218) reported the results of laboratory experiments reacting sulfuric and hydrochloric acids with synthesized martian basalts; the compositions were based on rock and soil targets analyzed by the Mars Pathfinder Alpha Proton X-ray Spectrometer. Among the resulting alteration phases were amorphous silica, Ca and Fe sulfates, and Fe oxides. The authors suggested that interactions between basaltic rocks and acid fog on the martian surface would result in phases with poor crystallinity. The Mars Exploration Rover Spirit observed evidence of this process in the Columbia Hills of Gusev Crater. Spirit examined a set of geochemically similar but mineralogically distinct outcrops on Cumberland Ridge and the Husband Hill summit. The iron oxidation state (Fe (super 3+) /Fe (sub total) ) of the "Watchtower Class" exposures on Cumberland Ridge range from 0.43 to 0.94, across a distance of only approximately 30 m. The outcrops' microtextures exhibit knobby protuberances, whose size correlates directly with the iron oxidation state and abundance of nanophase Fe (super 3+) oxides as measured by the Mossbauer Spectrometer, and the abundance of amorphous phases modeled through the deconvolution of Mini-TES thermal emission spectra. We propose that the knobby protuberances are agglomerations of preexisting grains, formed from the interaction of acid fog and the host rock. In this alteration scenario, acid fog condensed on the outcrop surfaces, dissolving material at the condensation-surface interface and forming a gel, which desiccated as the adsorbed water evaporated. Differences in condensation residence time, due to amount of insolation and/or winds, resulted in the oxidative, mineralogical, and microtextural variations Spirit observed on these targets. JF - Abstracts with Programs - Geological Society of America AU - Cole, Shoshanna B AU - Clark, Benton, III AU - Farrand, William H AU - Herkenhoff, Kenneth E AU - Morris, Richard V AU - Ruff, Steven W AU - Squyres, Steven W AU - Yingst, R Aileen AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 268 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765869730?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=In-situ+evidence+for+alteration+by+acid+fog+on+Husband+Hill%2C+Gusev+Crater%2C+Mars&rft.au=Cole%2C+Shoshanna+B%3BClark%2C+Benton%2C+III%3BFarrand%2C+William+H%3BHerkenhoff%2C+Kenneth+E%3BMorris%2C+Richard+V%3BRuff%2C+Steven+W%3BSquyres%2C+Steven+W%3BYingst%2C+R+Aileen%3BAnonymous&rft.aulast=Cole&rft.aufirst=Shoshanna&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=268&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-02-18 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Holocene barrier-island geology and morphodynamics of the Maryland and Virginia open-ocean coasts; Fenwick, Assateague, Chincoteague, Wallops, Cedar, and Parramore Islands AN - 1756505786; 2016-007663 AB - This four-day field trip will include 21 field stops along a 105-km reach of Maryland's and Virginia's barrier-island coast along the Delmarva Peninsula. Along the way, we will cover aspects of barrier-island and nearshore geology and of barrier-island and backbarrier marsh process-response morphodynamic systems in two hydrodynamic settings: (1) the wave-dominated Assateague Island along the northern Delmarva Peninsula and (2) the mixed-energy Virginia barrier islands along the southern Delmarva Peninsula. We will also examine anthropogenic impacts on barrier-island systems at Ocean City Inlet, Maryland, and the National Aeronautics and Space Administration's (NASA) Wallops Island, Virginia. JF - Field Guide (Geological Society of America) AU - McBride, Randolph A AU - Fenster, Michael S AU - Seminack, Christopher T AU - Richardson, Trent M AU - Sepanik, Julie M AU - Hanley, J Thomas AU - Bundick, Joshua A AU - Tedder, Elizabeth Y1 - 2015 PY - 2015 DA - 2015 SP - 309 EP - 423 PB - Geological Society of America, Boulder, CO VL - 40 SN - 2333-0937, 2333-0937 KW - United States KW - lower Holocene KW - field trips KW - paleoclimatology KW - Holocene KW - road log KW - Cenozoic KW - Assateague Island KW - Cedar Island KW - Maryland KW - Fenwick Island KW - Delmarva Peninsula KW - processes KW - barrier islands KW - ocean circulation KW - Virginia KW - Quaternary KW - Parramore Island KW - landform evolution KW - effects KW - paleogeography KW - tides KW - sea-level changes KW - Wallops Island KW - coastal environment KW - Chincoteague Island KW - geomorphology KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756505786?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Field+Guide+%28Geological+Society+of+America%29&rft.atitle=Holocene+barrier-island+geology+and+morphodynamics+of+the+Maryland+and+Virginia+open-ocean+coasts%3B+Fenwick%2C+Assateague%2C+Chincoteague%2C+Wallops%2C+Cedar%2C+and+Parramore+Islands&rft.au=McBride%2C+Randolph+A%3BFenster%2C+Michael+S%3BSeminack%2C+Christopher+T%3BRichardson%2C+Trent+M%3BSepanik%2C+Julie+M%3BHanley%2C+J+Thomas%3BBundick%2C+Joshua+A%3BTedder%2C+Elizabeth&rft.aulast=McBride&rft.aufirst=Randolph&rft.date=2015-01-01&rft.volume=40&rft.issue=&rft.spage=309&rft.isbn=&rft.btitle=&rft.title=Field+Guide+%28Geological+Society+of+America%29&rft.issn=23330937&rft_id=info:doi/10.1130%2F2015.0040%2810%29 L2 - http://fieldguides.gsapubs.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 122 N1 - PubXState - CO N1 - Document feature - illus. incl. 22 tables, geol. sketch maps N1 - Last updated - 2016-01-14 N1 - SubjectsTermNotLitGenreText - Assateague Island; barrier islands; Cedar Island; Cenozoic; Chincoteague Island; coastal environment; Delmarva Peninsula; effects; Fenwick Island; field trips; geomorphology; Holocene; landform evolution; lower Holocene; Maryland; ocean circulation; paleoclimatology; paleogeography; Parramore Island; processes; Quaternary; road log; sea-level changes; tides; United States; Virginia; Wallops Island DO - http://dx.doi.org/10.1130/2015.0040(10) ER - TY - JOUR T1 - Assessment of micro-relief derived from Curiosity's MAHLI stereo imaging AN - 1756505752; 2016-006706 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Garvin, James B AU - Edgett, K S AU - Kennedy, M R AU - Minitti, M E AU - McBride, M J AU - Krezoski, G M AU - Dotson, R AU - Yingst, R A AU - Gomez-Elvira, J AU - Conrad, P G AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract 2482 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - technology KW - stereographic projection KW - Mars KW - MAHLI KW - relief KW - terrestrial planets KW - models KW - Mars Exploration Rover KW - planets KW - topography KW - Curiosity Rover KW - Mars Science Laboratory KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756505752?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Assessment+of+micro-relief+derived+from+Curiosity%27s+MAHLI+stereo+imaging&rft.au=Garvin%2C+James+B%3BEdgett%2C+K+S%3BKennedy%2C+M+R%3BMinitti%2C+M+E%3BMcBride%2C+M+J%3BKrezoski%2C+G+M%3BDotson%2C+R%3BYingst%2C+R+A%3BGomez-Elvira%2C+J%3BConrad%2C+P+G%3BAnonymous&rft.aulast=Garvin&rft.aufirst=James&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/2482.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 3 N1 - PubXState - TX N1 - Document feature - illus. N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Curiosity Rover; instruments; MAHLI; Mars; Mars Exploration Rover; Mars Science Laboratory; models; planets; relief; stereographic projection; technology; terrestrial planets; topography ER - TY - JOUR T1 - In situ stable isotope gas analysis enhanced four orders of magnitude AN - 1756505483; 2016-007222 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Coleman, Max AU - Christensen, Lance AU - Kelly, Jim AU - Kriesel, Jason AU - Moran, James AU - Vance, Steve AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 580 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - water KW - chlorine KW - experimental studies KW - N-15/N-14 KW - oxygen KW - in situ KW - isotopes KW - isotope ratios KW - C-13/C-12 KW - halogens KW - O-18/O-16 KW - biomarkers KW - stable isotopes KW - nitrogen KW - measurement KW - geochemical cycle KW - carbon dioxide KW - laboratory studies KW - D/H KW - hydrogen KW - carbon KW - Cl-37/Cl-35 KW - carbon cycle KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756505483?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=In+situ+stable+isotope+gas+analysis+enhanced+four+orders+of+magnitude&rft.au=Coleman%2C+Max%3BChristensen%2C+Lance%3BKelly%2C+Jim%3BKriesel%2C+Jason%3BMoran%2C+James%3BVance%2C+Steve%3BAnonymous&rft.aulast=Coleman&rft.aufirst=Max&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=580&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/580.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Last updated - 2016-01-14 N1 - SubjectsTermNotLitGenreText - biomarkers; C-13/C-12; carbon; carbon cycle; carbon dioxide; chlorine; Cl-37/Cl-35; D/H; experimental studies; geochemical cycle; halogens; hydrogen; in situ; isotope ratios; isotopes; laboratory studies; measurement; N-15/N-14; nitrogen; O-18/O-16; oxygen; stable isotopes; water ER - TY - JOUR T1 - In situ measurement of atmospheric Kr and Xe isotopes on Mars AN - 1756505383; 2016-007232 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Conrad, P G AU - Malespin, C A AU - Franz, H B AU - Trainer, M G AU - Wong, M H AU - Atreya, S K AU - Pepin, R O AU - Schwenzer, S P AU - Jones, J AU - Owen, T AU - Mahaffy, P R AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 590 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - stony meteorites KW - in situ KW - isotopes KW - Martian meteorites KW - statistical analysis KW - standard deviation KW - mass spectra KW - atmosphere KW - Mars KW - Elephant Moraine Meteorites KW - xenon KW - krypton KW - achondrites KW - measurement KW - terrestrial planets KW - SNC Meteorites KW - planets KW - meteorites KW - EETA 79001 KW - Antarctica KW - shergottite KW - noble gases KW - spectra KW - 04:Extraterrestrial geology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756505383?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=In+situ+measurement+of+atmospheric+Kr+and+Xe+isotopes+on+Mars&rft.au=Conrad%2C+P+G%3BMalespin%2C+C+A%3BFranz%2C+H+B%3BTrainer%2C+M+G%3BWong%2C+M+H%3BAtreya%2C+S+K%3BPepin%2C+R+O%3BSchwenzer%2C+S+P%3BJones%2C+J%3BOwen%2C+T%3BMahaffy%2C+P+R%3BAnonymous&rft.aulast=Conrad&rft.aufirst=P&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=590&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/590.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 6 N1 - Last updated - 2016-01-14 N1 - SubjectsTermNotLitGenreText - achondrites; Antarctica; atmosphere; EETA 79001; Elephant Moraine Meteorites; in situ; isotopes; krypton; Mars; Martian meteorites; mass spectra; measurement; meteorites; noble gases; planets; shergottite; SNC Meteorites; spectra; standard deviation; statistical analysis; stony meteorites; terrestrial planets; xenon ER - TY - JOUR T1 - Terrain analysis of Mars at CM-scales form MARDI stereo imaging AN - 1756505340; 2016-006707 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Garvin, James B AU - Minitti, M E AU - Caplinger, M AU - Maki, J AU - Frawley, J J AU - Dotson, R AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract 2532 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - terrestrial planets KW - Mars Exploration Rover KW - planets KW - imagery KW - topography KW - technology KW - Mars Science Laboratory KW - Mars KW - instruments KW - MARDI KW - exploration KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756505340?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Terrain+analysis+of+Mars+at+CM-scales+form+MARDI+stereo+imaging&rft.au=Garvin%2C+James+B%3BMinitti%2C+M+E%3BCaplinger%2C+M%3BMaki%2C+J%3BFrawley%2C+J+J%3BDotson%2C+R%3BAnonymous&rft.aulast=Garvin&rft.aufirst=James&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/2532.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 4 N1 - PubXState - TX N1 - Document feature - illus. N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - exploration; imagery; instruments; MARDI; Mars; Mars Exploration Rover; Mars Science Laboratory; planets; technology; terrestrial planets; topography ER - TY - JOUR T1 - Ge enrichments in sedimentary rocks in Gale Crater, Mars AN - 1756504313; 2016-007112 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Berger, Jeff A AU - Schmidt, M E AU - Gellert, R AU - Campbell, J L AU - Elliott, B E AU - King, P L AU - Ming, D W AU - Perrett, G M AU - Thompson, L M AU - VanBommel, S J AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 270 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - alteration KW - protoliths KW - volcanic rocks KW - igneous rocks KW - Mars KW - X-ray spectra KW - weathering KW - lithophile elements KW - Gale Crater KW - terrestrial planets KW - planets KW - sedimentary rocks KW - metals KW - diagenesis KW - germanium KW - basalts KW - spectra KW - chemical composition KW - 02C:Geochemistry of rocks, soils, and sediments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756504313?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Ge+enrichments+in+sedimentary+rocks+in+Gale+Crater%2C+Mars&rft.au=Berger%2C+Jeff+A%3BSchmidt%2C+M+E%3BGellert%2C+R%3BCampbell%2C+J+L%3BElliott%2C+B+E%3BKing%2C+P+L%3BMing%2C+D+W%3BPerrett%2C+G+M%3BThompson%2C+L+M%3BVanBommel%2C+S+J%3BAnonymous&rft.aulast=Berger&rft.aufirst=Jeff&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=270&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/270.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 1 N1 - Document feature - illus. N1 - Last updated - 2016-06-17 N1 - SubjectsTermNotLitGenreText - alteration; basalts; chemical composition; diagenesis; Gale Crater; germanium; igneous rocks; lithophile elements; Mars; metals; planets; protoliths; sedimentary rocks; spectra; terrestrial planets; volcanic rocks; weathering; X-ray spectra ER - TY - JOUR T1 - The impact of craters on neutron fluxes AN - 1752579391; 2016-003399 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Eke, V R AU - Bower, K E AU - Diserens, S AU - Ryder, M AU - Yeomans, P E L AU - Teodoro, L F A AU - Elphic, R C AU - Feldman, W C AU - Hermalyn, B AU - Lavelle, C M AU - Lawrence, D J AU - Maurice, S AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1905 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - water KW - fast neutrons KW - Moon KW - thermal neutrons KW - Lunar Prospector Program KW - neutron flux KW - cold traps KW - models KW - topography KW - neutrons KW - craters KW - neutron probe data KW - epithermal neutrons KW - corrections KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752579391?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=The+impact+of+craters+on+neutron+fluxes&rft.au=Eke%2C+V+R%3BBower%2C+K+E%3BDiserens%2C+S%3BRyder%2C+M%3BYeomans%2C+P+E+L%3BTeodoro%2C+L+F+A%3BElphic%2C+R+C%3BFeldman%2C+W+C%3BHermalyn%2C+B%3BLavelle%2C+C+M%3BLawrence%2C+D+J%3BMaurice%2C+S%3BAnonymous&rft.aulast=Eke&rft.aufirst=V&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/1905.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 9 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Sept. 29, 2015 N1 - Last updated - 2015-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - cold traps; corrections; craters; epithermal neutrons; fast neutrons; Lunar Prospector Program; models; Moon; neutron flux; neutron probe data; neutrons; thermal neutrons; topography; water ER - TY - JOUR T1 - Dielectric breakdown weathering rate of the Moon's polar regolith AN - 1752579325; 2016-003390 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Jordan, A P AU - Stubbs, T J AU - Wilson, J K AU - Schwadron, N A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1523 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - polar regions KW - electrical conductivity KW - CRaTER instrument KW - Moon KW - Lunar Reconnaissance Orbiter KW - solar energetic particle events KW - electrical field KW - protons KW - impacts KW - weathering KW - meteorites KW - Cosmic Ray Telescope for the Effects of Radiation KW - dielectric properties KW - permanently shadowed regions KW - weathering rates KW - regolith KW - electrons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752579325?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Dielectric+breakdown+weathering+rate+of+the+Moon%27s+polar+regolith&rft.au=Jordan%2C+A+P%3BStubbs%2C+T+J%3BWilson%2C+J+K%3BSchwadron%2C+N+A%3BAnonymous&rft.aulast=Jordan&rft.aufirst=A&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/1523.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 10 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Sept. 25, 2015 N1 - Last updated - 2015-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Cosmic Ray Telescope for the Effects of Radiation; CRaTER instrument; dielectric properties; electrical conductivity; electrical field; electrons; impacts; Lunar Reconnaissance Orbiter; meteorites; Moon; permanently shadowed regions; polar regions; protons; regolith; solar energetic particle events; weathering; weathering rates ER - TY - JOUR T1 - LRO/CRaTER discoveries of the lunar radiation environment and lunar regolith alteration by radiation AN - 1752579312; 2016-003389 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Schwadron, N A AU - Spence, H E AU - Wilson, J K AU - Jordan, A P AU - Winslow, R AU - Joyce, C AU - Looper, M D AU - Case, A W AU - Petro, N E AU - Robinson, Mark S AU - Stubbs, T J AU - Zeitlin, C AU - Blake, J B AU - Kasper, J AU - Mazur, J E AU - Smith, S S AU - Townsend, L W AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2395 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - galactic cosmic rays KW - CRaTER instrument KW - Moon KW - Lunar Reconnaissance Orbiter KW - solar energetic particle events KW - solar wind KW - protons KW - Cosmic Ray Telescope for the Effects of Radiation KW - albedo protons KW - oscillations KW - dielectric properties KW - background radiation KW - cosmic rays KW - regolith KW - particles KW - anisotropy KW - solar activity KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752579312?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=LRO%2FCRaTER+discoveries+of+the+lunar+radiation+environment+and+lunar+regolith+alteration+by+radiation&rft.au=Schwadron%2C+N+A%3BSpence%2C+H+E%3BWilson%2C+J+K%3BJordan%2C+A+P%3BWinslow%2C+R%3BJoyce%2C+C%3BLooper%2C+M+D%3BCase%2C+A+W%3BPetro%2C+N+E%3BRobinson%2C+Mark+S%3BStubbs%2C+T+J%3BZeitlin%2C+C%3BBlake%2C+J+B%3BKasper%2C+J%3BMazur%2C+J+E%3BSmith%2C+S+S%3BTownsend%2C+L+W%3BAnonymous&rft.aulast=Schwadron&rft.aufirst=N&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/2395.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 15 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Sept. 25, 2015 N1 - Last updated - 2015-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - albedo protons; anisotropy; background radiation; Cosmic Ray Telescope for the Effects of Radiation; cosmic rays; CRaTER instrument; dielectric properties; galactic cosmic rays; Lunar Reconnaissance Orbiter; Moon; oscillations; particles; protons; regolith; solar activity; solar energetic particle events; solar wind ER - TY - JOUR T1 - Experimental constraints on the chemical differentiation of Mercury's mantle AN - 1752579108; 2016-003023 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Boujibar, Asmaa AU - Righter, K AU - Pando, K AU - Danielson, L AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract No. 2544 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - experimental studies KW - technology KW - differentiation KW - mantle KW - fugacity KW - terrestrial planets KW - planets KW - melting KW - Mercury Planet KW - sulfur KW - MESSENGER Mission KW - geochemistry KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752579108?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Experimental+constraints+on+the+chemical+differentiation+of+Mercury%27s+mantle&rft.au=Boujibar%2C+Asmaa%3BRighter%2C+K%3BPando%2C+K%3BDanielson%2C+L%3BAnonymous&rft.aulast=Boujibar&rft.aufirst=Asmaa&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/2544.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 10 N1 - PubXState - TX N1 - Document feature - illus. N1 - Last updated - 2015-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - differentiation; experimental studies; fugacity; geochemistry; instruments; mantle; melting; Mercury Planet; MESSENGER Mission; planets; sulfur; technology; terrestrial planets ER - TY - JOUR T1 - Exploring the cold icy early Mars hypothesis through geochemistry and mineralogy AN - 1752579080; 2016-003422 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Niles, Paul B AU - Michalski, J R AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2860 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - silicates KW - Noachian KW - isotopes KW - Mars KW - Hesperian KW - paleoclimatology KW - stable isotopes KW - hydrosphere KW - hydrologic cycle KW - climate KW - water KW - sulfates KW - paleohydrology KW - paleoatmosphere KW - drainage patterns KW - paleolakes KW - weathering KW - clay minerals KW - terrestrial planets KW - aqueous alteration KW - planets KW - fluvial features KW - sheet silicates KW - carbonates KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752579080?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Exploring+the+cold+icy+early+Mars+hypothesis+through+geochemistry+and+mineralogy&rft.au=Niles%2C+Paul+B%3BMichalski%2C+J+R%3BAnonymous&rft.aulast=Niles&rft.aufirst=Paul&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/2860.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 22 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Oct. 8, 2015 N1 - Last updated - 2015-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - aqueous alteration; carbonates; clay minerals; climate; drainage patterns; fluvial features; Hesperian; hydrologic cycle; hydrosphere; isotopes; Mars; Noachian; paleoatmosphere; paleoclimatology; paleohydrology; paleolakes; planets; sheet silicates; silicates; stable isotopes; sulfates; terrestrial planets; water; weathering ER - TY - JOUR T1 - Formation and preservation of the depleted and enriched shergottite isotopic reservoirs in a convection Martian mantle AN - 1752578861; 2016-003354 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Kiefer, Walter S AU - Jones, John H AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1197 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - diffusion KW - stony meteorites KW - isotopes KW - incompatible elements KW - Martian meteorites KW - enrichment KW - mantle KW - Mars KW - convection KW - achondrites KW - terrestrial planets KW - SNC Meteorites KW - assimilation KW - planets KW - meteorites KW - shergottite KW - cumulates KW - mixing KW - metals KW - rare earths KW - neodymium KW - depletion KW - magma chambers KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752578861?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Formation+and+preservation+of+the+depleted+and+enriched+shergottite+isotopic+reservoirs+in+a+convection+Martian+mantle&rft.au=Kiefer%2C+Walter+S%3BJones%2C+John+H%3BAnonymous&rft.aulast=Kiefer&rft.aufirst=Walter&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/1197.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 26 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Sept. 2, 2015 N1 - Last updated - 2015-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; assimilation; convection; cumulates; depletion; diffusion; enrichment; incompatible elements; isotopes; magma chambers; mantle; Mars; Martian meteorites; metals; meteorites; mixing; neodymium; planets; rare earths; shergottite; SNC Meteorites; stony meteorites; terrestrial planets ER - TY - JOUR T1 - Exploring lunar sub-surface objects using surface gravimetric surveys AN - 1752578788; 2016-003046 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Urbancic, N AU - Stanley, Sabine AU - Ghent, R R AU - Carroll, Kieran A AU - Hatch, D AU - Williamson, M C AU - Garry, W B AU - Talwani, M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract No. 1616 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - high-resolution methods KW - technology KW - Moon KW - GRAIL Mission KW - geophysical methods KW - satellite methods KW - exploration KW - gravity methods KW - Gravity Recovery and Interior Laboratory data KW - lunar interior KW - instruments KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752578788?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Exploring+lunar+sub-surface+objects+using+surface+gravimetric+surveys&rft.au=Urbancic%2C+N%3BStanley%2C+Sabine%3BGhent%2C+R+R%3BCarroll%2C+Kieran+A%3BHatch%2C+D%3BWilliamson%2C+M+C%3BGarry%2C+W+B%3BTalwani%2C+M%3BAnonymous&rft.aulast=Urbancic&rft.aufirst=N&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/1616.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. N1 - Last updated - 2015-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - exploration; geophysical methods; GRAIL Mission; gravity methods; Gravity Recovery and Interior Laboratory data; high-resolution methods; instruments; lunar interior; Moon; remote sensing; satellite methods; technology ER - TY - JOUR T1 - The role of cooling in pahoehoe emplacement on planetary surfaces AN - 1752577554; 2016-003364 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Glaze, Lori S AU - Baloga, Steve M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 1174 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - pressure KW - lava flows KW - Mars KW - simulation KW - emplacement KW - temperature KW - terrestrial planets KW - morphology KW - models KW - planets KW - lava KW - natural analogs KW - volume KW - surface features KW - cooling KW - dimensions KW - pahoehoe KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752577554?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=The+role+of+cooling+in+pahoehoe+emplacement+on+planetary+surfaces&rft.au=Glaze%2C+Lori+S%3BBaloga%2C+Steve+M%3BAnonymous&rft.aulast=Glaze&rft.aufirst=Lori&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/1174.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 14 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Sept. 8, 2015 N1 - Last updated - 2015-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - cooling; dimensions; emplacement; lava; lava flows; Mars; models; morphology; natural analogs; pahoehoe; planets; pressure; simulation; surface features; temperature; terrestrial planets; volume ER - TY - JOUR T1 - The evolution of the water reservoirs on Mars revealed via D/H isotopic mapping AN - 1752577489; 2016-003405 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Villanueva, Geronimo L AU - Mumma, M J AU - Novak, R E AU - Kaeufl, H U AU - Hartogh, P AU - Encrenaz, T AU - Tokunaga, A T AU - Khayat, A AU - Smith, M D AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2073 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - water KW - isotopes KW - paleohydrology KW - isotope ratios KW - atmosphere KW - water vapor KW - Mars KW - mapping KW - distribution KW - stable isotopes KW - infrared spectra KW - terrestrial planets KW - sublimation KW - planets KW - hydrologic cycle KW - D/H KW - hydrogen KW - spectra KW - seasonal variations KW - latitude KW - deuterium KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752577489?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=The+evolution+of+the+water+reservoirs+on+Mars+revealed+via+D%2FH+isotopic+mapping&rft.au=Villanueva%2C+Geronimo+L%3BMumma%2C+M+J%3BNovak%2C+R+E%3BKaeufl%2C+H+U%3BHartogh%2C+P%3BEncrenaz%2C+T%3BTokunaga%2C+A+T%3BKhayat%2C+A%3BSmith%2C+M+D%3BAnonymous&rft.aulast=Villanueva&rft.aufirst=Geronimo&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/2073.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 11 N1 - PubXState - TX N1 - Document feature - sketch maps N1 - SuppNotes - Accessed on Sept. 30, 2015 N1 - Last updated - 2015-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - atmosphere; D/H; deuterium; distribution; hydrogen; hydrologic cycle; infrared spectra; isotope ratios; isotopes; latitude; mapping; Mars; paleohydrology; planets; seasonal variations; spectra; stable isotopes; sublimation; terrestrial planets; water; water vapor ER - TY - JOUR T1 - Evaluation of degree-1200 GRAIL gravity models using line-of-sight data and spectral analysis AN - 1752577422; 2016-003037 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Ermakov, Anton I AU - Zuber, Maria T AU - Smith, David E AU - Park, Ryan S AU - Konopliv, Alex S AU - Neumann, Gregory A AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract No. 1314 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - models KW - Gravity Recovery and Interior Laboratory data KW - gravity field KW - technology KW - Moon KW - GRAIL Mission KW - spectral analysis KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752577422?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Evaluation+of+degree-1200+GRAIL+gravity+models+using+line-of-sight+data+and+spectral+analysis&rft.au=Ermakov%2C+Anton+I%3BZuber%2C+Maria+T%3BSmith%2C+David+E%3BPark%2C+Ryan+S%3BKonopliv%2C+Alex+S%3BNeumann%2C+Gregory+A%3BAnonymous&rft.aulast=Ermakov&rft.aufirst=Anton&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/1314.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. N1 - Last updated - 2015-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - GRAIL Mission; gravity field; Gravity Recovery and Interior Laboratory data; instruments; models; Moon; spectral analysis; technology ER - TY - JOUR T1 - Sulfur isotopes and Martian climate history AN - 1752576379; 2016-003403 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Franz, Heather B AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2970 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - isotope fractionation KW - stony meteorites KW - isotopes KW - Martian meteorites KW - Mars KW - paleoclimatology KW - stable isotopes KW - meteorites KW - laboratory studies KW - S-36/S-32 KW - tracers KW - greenhouse effect KW - sulfur dioxide KW - experimental studies KW - gaseous phase KW - isotope ratios KW - photochemistry KW - atmosphere KW - achondrites KW - terrestrial planets KW - planets KW - sulfur KW - S-33/S-32 KW - optical depth KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752576379?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Sulfur+isotopes+and+Martian+climate+history&rft.au=Franz%2C+Heather+B%3BAnonymous&rft.aulast=Franz&rft.aufirst=Heather&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/2970.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 30 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Sept. 30, 2015 N1 - Last updated - 2015-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; atmosphere; experimental studies; gaseous phase; greenhouse effect; isotope fractionation; isotope ratios; isotopes; laboratory studies; Mars; Martian meteorites; meteorites; optical depth; paleoclimatology; photochemistry; planets; S-33/S-32; S-36/S-32; stable isotopes; stony meteorites; sulfur; sulfur dioxide; terrestrial planets; tracers ER - TY - JOUR T1 - Reconstruction of limnology and microbialite formation conditions from carbonate clumped isotope thermometry AN - 1739085366; 2015-114138 AB - Quantitative tools for deciphering the environment of microbialite formation are relatively limited. For example, the oxygen isotope carbonate-water geothermometer requires assumptions about the isotopic composition of the water of formation. We explored the utility of using "clumped" isotope thermometry as a tool to study the temperatures of microbialite formation. We studied microbialites recovered from water depths of 10-55 m in Pavilion Lake, and 10-25 m in Kelly Lake, spanning the thermocline in both lakes. We determined the temperature of carbonate growth and the (super 18) O/ (super 16) O ratio of the waters that microbialites grew in. Results were then compared to current limnological data from the lakes to reconstruct the history of microbialite formation. Modern microbialites collected at shallow depths (11.7 m) in both lakes yield clumped isotope-based temperatures of formation that are within error of summer water temperatures, suggesting that clumped isotope analyses may be used to reconstruct past climates and to probe the environments in which microbialites formed. The deepest microbialites (21.7-55 m) were recovered from below the present-day thermoclines in both lakes and yield radioisotope ages indicating they primarily formed earlier in the Holocene. During this time, pollen data and our reconstructed water (super 18) O/ (super 16) O ratios indicate a period of aridity, with lower lake levels. At present, there is a close association between both photosynthetic and heterotrophic communities, and carbonate precipitation/microbialite formation, with biosignatures of photosynthetic influences on carbonate detected in microbialites from the photic zone and above the thermocline (i.e., depths of generally <20 m). Given the deeper microbialites are receiving <1% of photosynthetically active radiation (PAR), it is likely these microbialites primarily formed when lower lake levels resulted in microbialites being located higher in the photic zone, in warm surface waters. Abstract Copyright (2010), John Wiley & Sons, Ltd. JF - Geobiology AU - Petryshyn, V A AU - Lim, D AU - Laval, B L AU - Brady, A AU - Slater, G AU - Tripati, A K Y1 - 2015/01// PY - 2015 DA - January 2015 SP - 53 EP - 67 PB - Wiley, Oxford VL - 13 IS - 1 SN - 1472-4677, 1472-4677 KW - limestone KW - lake-level changes KW - oxygen KW - isotopes KW - paleoclimatology KW - Holocene KW - stable isotopes KW - Pavilion Lake KW - Cenozoic KW - sedimentary rocks KW - paleotemperature KW - carbon KW - chemical composition KW - kinetics KW - Quaternary KW - isotope ratios KW - Kelly Lake KW - C-13/C-12 KW - British Columbia KW - O-18/O-16 KW - paleoenvironment KW - Canada KW - precipitation KW - diagenesis KW - microbialite KW - lacustrine environment KW - Western Canada KW - carbonate rocks KW - 06A:Sedimentary petrology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1739085366?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geobiology&rft.atitle=Reconstruction+of+limnology+and+microbialite+formation+conditions+from+carbonate+clumped+isotope+thermometry&rft.au=Petryshyn%2C+V+A%3BLim%2C+D%3BLaval%2C+B+L%3BBrady%2C+A%3BSlater%2C+G%3BTripati%2C+A+K&rft.aulast=Petryshyn&rft.aufirst=V&rft.date=2015-01-01&rft.volume=13&rft.issue=1&rft.spage=53&rft.isbn=&rft.btitle=&rft.title=Geobiology&rft.issn=14724677&rft_id=info:doi/10.1111%2Fgbi.12121 L2 - http://www.blackwellpublishing.com/journal.asp?ref=1472-4677 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 49 N1 - Document feature - illus. incl. 6 tables, sketch map N1 - SuppNotes - NSF grants EAR-1352212, EAR-1325054, OCE-1437166, EAR-0949191, and ARC-1215551 N1 - Last updated - 2015-12-04 N1 - SubjectsTermNotLitGenreText - British Columbia; C-13/C-12; Canada; carbon; carbonate rocks; Cenozoic; chemical composition; diagenesis; Holocene; isotope ratios; isotopes; Kelly Lake; kinetics; lacustrine environment; lake-level changes; limestone; microbialite; O-18/O-16; oxygen; paleoclimatology; paleoenvironment; paleotemperature; Pavilion Lake; precipitation; Quaternary; sedimentary rocks; stable isotopes; Western Canada DO - http://dx.doi.org/10.1111/gbi.12121 ER - TY - JOUR T1 - Lithium overdose: Early hemodialysis is the key! AN - 1734239910 AB - A 65-year-old gentleman was referred to our hospital with encephalopathy and renal failure. His medications included lithium for the treatment of bipolar disorder. The clinical examination and the laboratory investigations that followed revealed findings classical of lithium overdose. The patient was successfully managed and discharged from the hospital on Day 9 of admission. Clinicians should be aware of this rather unusual and relatively rare differential cause of acute on chronic renal failure with encephalopathy. JF - Saudi Journal of Kidney Diseases and Transplantation AU - Goel, Sachin AU - Nasa, Prashant AU - Gupta, Ankur AU - Gupta, Rajiva AU - Taneja, Saurabh Y1 - 2015 PY - 2015 DA - 2015 CY - Riyadh PB - Medknow Publications & Media Pvt. Ltd. VL - 26 IS - 1 SN - 13192442 KW - Medical Sciences--Urology And Nephrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734239910?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ahealthcompleteshell&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=Saudi+Journal+of+Kidney+Diseases+and+Transplantation&rft.atitle=Lithium+overdose%3A+Early+hemodialysis+is+the+key%21&rft.au=Goel%2C+Sachin%3BNasa%2C+Prashant%3BGupta%2C+Ankur%3BGupta%2C+Rajiva%3BTaneja%2C+Saurabh&rft.aulast=Goel&rft.aufirst=Sachin&rft.date=2015-01-01&rft.volume=26&rft.issue=1&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Saudi+Journal+of+Kidney+Diseases+and+Transplantation&rft.issn=13192442&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright Medknow Publications & Media Pvt Ltd 2015 N1 - Last updated - 2015-12-01 ER - TY - JOUR T1 - The frequency of explosive volcanic eruptions in Southeast Asia AN - 1729848052; 2015-103758 AB - There are approximately 750 active and potentially active volcanoes in Southeast Asia. Ash from eruptions of volcanic explosivity index 3 (VEI 3) and smaller pose mostly local hazards while eruptions of VEI > or = 4 could disrupt trade, travel, and daily life in large parts of the region. We classify Southeast Asian volcanoes into five groups, using their morphology and, where known, their eruptive history and degassing style. Because the eruptive histories of most volcanoes in Southeast Asia are poorly constrained, we assume that volcanoes with similar morphologies have had similar eruption histories. Eruption histories of well-studied examples of each morphologic class serve as proxy histories for understudied volcanoes in the class. From known and proxy eruptive histories, we estimate that decadal probabilities of VEI 4-8 eruptions in Southeast Asia are nearly 1.0, approximately 0.6, approximately 0.15, approximately 0.012, and approximately 0.001, respectively. Copyright 2015 Springer-Verlag Berlin Heidelberg and The Author(s) JF - Bulletin of Volcanology AU - Whelley, Patrick L AU - Newhall, Christopher G AU - Bradley, Kyle E Y1 - 2015/01// PY - 2015 DA - January 2015 SP - 11 PB - Springer International [for the] International Association of Volcanology and Chemistry of the Earth's Interior (IAVCEI), Heidelberg VL - 77 IS - 1 SN - 0258-8900, 0258-8900 KW - decadal variations KW - Far East KW - volcanic rocks KW - geologic hazards KW - igneous rocks KW - Indonesia KW - frequency KW - explosive eruptions KW - volcanic features KW - volcanism KW - Indochina KW - probability KW - volcanic ash KW - Southeast Asia KW - Asia KW - Philippine Sea Plate KW - statistical analysis KW - morphology KW - pyroclastics KW - volcanic risk KW - plate tectonics KW - Philippine Islands KW - natural hazards KW - volcanoes KW - 24:Quaternary geology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1729848052?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Bulletin+of+Volcanology&rft.atitle=The+frequency+of+explosive+volcanic+eruptions+in+Southeast+Asia&rft.au=Whelley%2C+Patrick+L%3BNewhall%2C+Christopher+G%3BBradley%2C+Kyle+E&rft.aulast=Whelley&rft.aufirst=Patrick&rft.date=2015-01-01&rft.volume=77&rft.issue=1&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Bulletin+of+Volcanology&rft.issn=02588900&rft_id=info:doi/10.1007%2Fs00445-014-0893-8 L2 - http://www.springerlink.com/(1k1tfmmpjinass550lg0zy55)/app/home/journal.asp?referrer=parent&backto=linkingpublicationresults,1:100402,1 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by Springer Verlag, Berlin, Federal Republic of Germany N1 - Date revised - 2015-01-01 N1 - Number of references - 43 N1 - Document feature - illus. incl. 3 tables, sketch map N1 - Last updated - 2015-11-05 N1 - CODEN - BUVOEW N1 - SubjectsTermNotLitGenreText - Asia; decadal variations; explosive eruptions; Far East; frequency; geologic hazards; igneous rocks; Indochina; Indonesia; morphology; natural hazards; Philippine Islands; Philippine Sea Plate; plate tectonics; probability; pyroclastics; Southeast Asia; statistical analysis; volcanic ash; volcanic features; volcanic risk; volcanic rocks; volcanism; volcanoes DO - http://dx.doi.org/10.1007/s00445-014-0893-8 ER - TY - JOUR T1 - CORONAL FOURIER POWER SPECTRA: IMPLICATIONS FOR CORONAL SEISMOLOGY AND CORONAL HEATING AN - 1722165673; PQ0002054566 AB - The dynamics of regions of the solar corona are investigated using Atmospheric Imaging Assembly 171 [Angstrom] and 193 [Angstrom] data. The coronal emission from the quiet Sun, coronal loop footprints, coronal moss, and from above a sunspot is studied. It is shown that the mean Fourier power spectra in these regions can be described by a power law at lower frequencies that tails to a flat spectrum at higher frequencies, plus a Gaussian-shaped contribution that varies depending on the region studied. This Fourier spectral shape is in contrast to the commonly held assumption that coronal time series are well described by the sum of a long timescale background trend plus Gaussian-distributed noise, with some specific locations also showing an oscillatory signal. The implications of the observed spectral shape on the fields of coronal seismology and the automated detection of oscillations in the corona are discussed. The power-law contribution to the shape of the Fourier power spectrum is interpreted as being due to the summation of a distribution of exponentially decaying emission events along the line of sight. This is consistent with the idea that the solar atmosphere is heated everywhere by small energy deposition events. JF - Astrophysical Journal AU - Ireland, J AU - McAteer, R T J AU - Inglis, A R AD - ADNET Systems, Inc., NASA Goddard Space Hight Center, MC. 671.1, Greenbelt, MD 20771, USA, jack.ireland@nasa.gov PY - 2015 SP - 1 EP - 12 PB - IOP Publishing, The Public Ledger Building, Suite 929 Philadelphia PA 19106 United States VL - 798 IS - 1 SN - 0004-637X, 0004-637X KW - Pollution Abstracts; Meteorological & Geoastrophysical Abstracts KW - methods: data analysis KW - methods: statistical KW - Sun: corona KW - Sun: oscillations KW - Corona KW - Coronal studies KW - Acoustic waves KW - Power spectra KW - Coronal loops KW - Power law KW - Time series analysis KW - Atmosphere KW - Seismology KW - Energy KW - Sun KW - Emissions KW - Coronal heating KW - Noise pollution KW - Sunspot studies KW - Solar energy KW - Solar atmosphere dynamics KW - Solar corona oscillations KW - P 0000:AIR POLLUTION KW - M2 523.947:Solar Corona (523.947) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1722165673?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Astrophysical+Journal&rft.atitle=CORONAL+FOURIER+POWER+SPECTRA%3A+IMPLICATIONS+FOR+CORONAL+SEISMOLOGY+AND+CORONAL+HEATING&rft.au=Ireland%2C+J%3BMcAteer%2C+R+T+J%3BInglis%2C+A+R&rft.aulast=Ireland&rft.aufirst=J&rft.date=2015-01-01&rft.volume=798&rft.issue=1&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Astrophysical+Journal&rft.issn=0004637X&rft_id=info:doi/10.1088%2F0004-637X%2F798%2F1%2F1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-10-01 N1 - Last updated - 2015-12-23 N1 - SubjectsTermNotLitGenreText - Corona; Coronal studies; Acoustic waves; Coronal loops; Power spectra; Power law; Time series analysis; Coronal heating; Noise pollution; Sunspot studies; Solar energy; Solar atmosphere dynamics; Solar corona oscillations; Seismology; Energy; Sun; Emissions; Atmosphere DO - http://dx.doi.org/10.1088/0004-637X/798/1/1 ER - TY - BOOK T1 - Volatile generation and release from continental large igneous provinces AN - 1700098774; 2015-073277 JF - Volcanism and global environmental change AU - Svensen, Henrik AU - Fristad, Kirsten E AU - Polozov, Alexander G (Aleksandr G) AU - Planke, Sverre Y1 - 2015 PY - 2015 DA - 2015 PB - Cambridge University Press, Cambridge SN - 9781107058378 KW - flood basalts KW - volcanic rocks KW - igneous rocks KW - aliphatic hydrocarbons KW - Russian Federation KW - Norwegian Sea KW - carbon dioxide KW - Cenozoic KW - assimilation KW - Tunguska Basin KW - contact metamorphism KW - sedimentary rocks KW - Commonwealth of Independent States KW - North Atlantic Igneous Province KW - basalts KW - halogenated hydrocarbons KW - Arctic Ocean KW - Asia KW - sulfur dioxide KW - Karoo Basin KW - methane KW - Paleozoic KW - atmosphere KW - Paleogene KW - Paleocene-Eocene Thermal Maximum KW - alkanes KW - sills KW - Permian KW - metamorphism KW - Siberian Traps KW - volatiles KW - Tertiary KW - organic compounds KW - intrusions KW - Southern Africa KW - hydrocarbons KW - Africa KW - Voring Basin KW - large igneous provinces KW - mass extinctions KW - More Basin KW - 02C:Geochemistry of rocks, soils, and sediments KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700098774?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Svensen%2C+Henrik%3BFristad%2C+Kirsten+E%3BPolozov%2C+Alexander+G+%28Aleksandr+G%29%3BPlanke%2C+Sverre&rft.aulast=Svensen&rft.aufirst=Henrik&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=9781107058378&rft.btitle=Volatile+generation+and+release+from+continental+large+igneous+provinces&rft.title=Volatile+generation+and+release+from+continental+large+igneous+provinces&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 52 N1 - Document feature - illus. incl. sects., geol. sketch maps N1 - Last updated - 2015-07-30 ER - TY - BOOK T1 - Environmental effects of large igneous province magmatism; a Siberian perspective AN - 1700098753; 2015-073285 JF - Volcanism and global environmental change AU - Black, Benjamin A AU - Lamarque, Jean-Francois AU - Shields, Christine AU - Elkins-Tanton, Linda T AU - Kiehl, Jeffrey T Y1 - 2015 PY - 2015 DA - 2015 PB - Cambridge University Press, Cambridge SN - 9781107058378 KW - silicates KW - global change KW - atmospheric precipitation KW - simulation KW - environmental effects KW - carbon dioxide KW - ozone KW - Siberia KW - cooling KW - Asia KW - rain KW - pH KW - climate KW - global warming KW - chemical weathering KW - magmatism KW - global KW - atmosphere KW - weathering KW - gases KW - acid rain KW - models KW - Siberian Traps KW - sulfur KW - large igneous provinces KW - greenhouse gases KW - weathering rates KW - sea-surface temperature KW - 22:Environmental geology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700098753?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Black%2C+Benjamin+A%3BLamarque%2C+Jean-Francois%3BShields%2C+Christine%3BElkins-Tanton%2C+Linda+T%3BKiehl%2C+Jeffrey+T&rft.aulast=Black&rft.aufirst=Benjamin&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=9781107058378&rft.btitle=Environmental+effects+of+large+igneous+province+magmatism%3B+a+Siberian+perspective&rft.title=Environmental+effects+of+large+igneous+province+magmatism%3B+a+Siberian+perspective&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 66 N1 - Document feature - illus. incl. sketch map N1 - Last updated - 2015-07-30 ER - TY - BOOK T1 - Large igneous province locations and their connections with the core-mantle boundary AN - 1700098693; 2015-073268 JF - Volcanism and global environmental change AU - Torsvik, Trond H AU - Burke, Kevin Y1 - 2015 PY - 2015 DA - 2015 PB - Cambridge University Press, Cambridge SN - 9781107058378 KW - tomography KW - oceanic crust KW - mantle KW - LSVPs KW - elastic waves KW - core-mantle boundary KW - lower mantle KW - low-velocity zones KW - Cenozoic KW - upper Paleozoic KW - oceanic plateaus KW - mantle plumes KW - body waves KW - equatorial region KW - LLSVPs KW - Paleozoic KW - paleomagnetism KW - Mesozoic KW - provenance KW - large igneous provinces KW - seismic waves KW - reconstruction KW - S-waves KW - crust KW - 18:Solid-earth geophysics KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700098693?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Torsvik%2C+Trond+H%3BBurke%2C+Kevin&rft.aulast=Torsvik&rft.aufirst=Trond&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=9781107058378&rft.btitle=Large+igneous+province+locations+and+their+connections+with+the+core-mantle+boundary&rft.title=Large+igneous+province+locations+and+their+connections+with+the+core-mantle+boundary&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 33 N1 - Document feature - illus. incl. 2 tables, geol. sketch maps N1 - Last updated - 2015-07-30 ER - TY - BOOK T1 - Volcanism, the atmosphere and climate through time AN - 1700098637; 2015-073278 JF - Volcanism and global environmental change AU - Schmidt, Anja AU - Robock, Alan Y1 - 2015 PY - 2015 DA - 2015 PB - Cambridge University Press, Cambridge SN - 9781107058378 KW - flood basalts KW - sulfuric acid KW - volcanic rocks KW - igneous rocks KW - water vapor KW - global change KW - atmospheric precipitation KW - troposphere KW - paleoclimatology KW - explosive eruptions KW - environmental effects KW - climate change KW - carbon dioxide KW - stratosphere KW - volcanism KW - basalts KW - ground-surface temperature KW - inorganic acids KW - climate KW - global warming KW - paleoatmosphere KW - atmosphere KW - gases KW - models KW - eruptions KW - aerosols KW - temporal distribution KW - ash clouds KW - 22:Environmental geology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700098637?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Schmidt%2C+Anja%3BRobock%2C+Alan&rft.aulast=Schmidt&rft.aufirst=Anja&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=9781107058378&rft.btitle=Volcanism%2C+the+atmosphere+and+climate+through+time&rft.title=Volcanism%2C+the+atmosphere+and+climate+through+time&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 56 N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2015-07-30 ER - TY - BOOK T1 - Remote sensing of volcanic ash and sulfur dioxide AN - 1700098621; 2015-073272 JF - Volcanism and global environmental change AU - Prata, Fred AU - Prata, Gemma Y1 - 2015 PY - 2015 DA - 2015 PB - Cambridge University Press, Cambridge SN - 9781107058378 KW - sulfur dioxide KW - ground methods KW - differential optical absorption spectroscopy KW - satellite methods KW - AVHRR KW - volatiles KW - physical properties KW - optical properties KW - eruptions KW - DOAS KW - ultraviolet spectra KW - spectra KW - volcanic ash KW - ASTER instrument KW - remote sensing KW - MODIS KW - cameras KW - 20:Applied geophysics KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700098621?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Prata%2C+Fred%3BPrata%2C+Gemma&rft.aulast=Prata&rft.aufirst=Fred&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=9781107058378&rft.btitle=Remote+sensing+of+volcanic+ash+and+sulfur+dioxide&rft.title=Remote+sensing+of+volcanic+ash+and+sulfur+dioxide&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 43 N1 - Document feature - illus. incl. 1 table, sketch maps N1 - Last updated - 2015-07-30 ER - TY - BOOK T1 - Spatial and temporal patterns of ocean acidification during the end-Permian mass extinction an Earth system model evaluation AN - 1700098604; 2015-073284 JF - Volcanism and global environmental change AU - Cui, Ying AU - Kump, Lee R AU - Ridgwell, Andy Y1 - 2015 PY - 2015 DA - 2015 PB - Cambridge University Press, Cambridge SN - 9781107058378 KW - isotopes KW - paleo-oceanography KW - global change KW - simulation KW - stable isotopes KW - carbon dioxide KW - Lower Triassic KW - spatial distribution KW - Siberia KW - Triassic KW - carbon KW - Permian-Triassic boundary KW - Asia KW - pH KW - global warming KW - Paleozoic KW - isotope ratios KW - C-13/C-12 KW - Permian KW - Mesozoic KW - calcite KW - models KW - Siberian Traps KW - Upper Permian KW - acidification KW - temporal distribution KW - stratigraphic boundary KW - mass extinctions KW - carbonates KW - 12:Stratigraphy KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700098604?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Cui%2C+Ying%3BKump%2C+Lee+R%3BRidgwell%2C+Andy&rft.aulast=Cui&rft.aufirst=Ying&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=9781107058378&rft.btitle=Spatial+and+temporal+patterns+of+ocean+acidification+during+the+end-Permian+mass+extinction+an+Earth+system+model+evaluation&rft.title=Spatial+and+temporal+patterns+of+ocean+acidification+during+the+end-Permian+mass+extinction+an+Earth+system+model+evaluation&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 36 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2015-11-19 ER - TY - BOOK T1 - Volcanic-gas monitoring AN - 1700098493; 2015-073271 JF - Volcanism and global environmental change AU - Aiuppa, Alessandro Y1 - 2015 PY - 2015 DA - 2015 PB - Cambridge University Press, Cambridge SN - 9781107058378 KW - water KW - sulfur dioxide KW - monitoring KW - halogens KW - solubility KW - measurement KW - infrared spectra KW - gases KW - carbon dioxide KW - multicomponent methods KW - FTIR spectra KW - volatiles KW - sampling KW - magmas KW - geochemical methods KW - volcanoes KW - sulfur KW - decompression KW - temporal distribution KW - spectra KW - chemical composition KW - instruments KW - 24:Quaternary geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700098493?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Aiuppa%2C+Alessandro&rft.aulast=Aiuppa&rft.aufirst=Alessandro&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=9781107058378&rft.btitle=Volcanic-gas+monitoring&rft.title=Volcanic-gas+monitoring&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 68 N1 - Document feature - illus. N1 - Last updated - 2015-07-30 ER - TY - BOOK T1 - Large igneous provinces and explosive basaltic volcanism AN - 1700098482; 2015-073266 JF - Volcanism and global environmental change AU - Ukstins Peate, Ingrid AU - Elkins-Tanton, Linda T Y1 - 2015 PY - 2015 DA - 2015 PB - Cambridge University Press, Cambridge SN - 9781107058378 KW - flood basalts KW - plumes KW - Far East KW - volcanic rocks KW - igneous rocks KW - mafic composition KW - Russian Federation KW - explosive eruptions KW - climate change KW - temperature KW - spatial distribution KW - Greenland KW - volcaniclastics KW - Siberia KW - Commonwealth of Independent States KW - volcanism KW - basalts KW - basaltic composition KW - Asia KW - China KW - Precambrian KW - Arctic region KW - Siberian Traps KW - Phanerozoic KW - volatiles KW - large igneous provinces KW - temporal distribution KW - Emeishan Basalts KW - East Greenland KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700098482?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Ukstins+Peate%2C+Ingrid%3BElkins-Tanton%2C+Linda+T&rft.aulast=Ukstins+Peate&rft.aufirst=Ingrid&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=9781107058378&rft.btitle=Large+igneous+provinces+and+explosive+basaltic+volcanism&rft.title=Large+igneous+provinces+and+explosive+basaltic+volcanism&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 55 N1 - Document feature - strat. cols., sketch map N1 - Last updated - 2015-07-30 ER - TY - BOOK T1 - Volcanism and global environmental change AN - 1700098392; 2015-073265 JF - Volcanism and global environmental change Y1 - 2015 PY - 2015 DA - 2015 SP - 324 PB - Cambridge University Press, Cambridge SN - 9781107058378 KW - flood basalts KW - volcanic rocks KW - igneous rocks KW - atmosphere KW - global change KW - environmental effects KW - climate change KW - gases KW - pyroclastics KW - volcanism KW - basalts KW - large igneous provinces KW - mass extinctions KW - volcanic ash KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700098392?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=&rft.aulast=&rft.aufirst=&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=9781107058378&rft.btitle=Volcanism+and+global+environmental+change&rft.title=Volcanism+and+global+environmental+change&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Document feature - illus. N1 - SuppNotes - Individual chapters are cited separately N1 - Last updated - 2015-07-30 ER - TY - BOOK T1 - Volatile release from flood basalt eruptions; understanding the potential environmental effects AN - 1700098184; 2015-073276 JF - Volcanism and global environmental change AU - Self, Stephen AU - Glaze, Lori S AU - Schmidt, Anja AU - Mather, Tamsin A Y1 - 2015 PY - 2015 DA - 2015 PB - Cambridge University Press, Cambridge SN - 9781107058378 KW - United States KW - flood basalts KW - plumes KW - volcanic rocks KW - igneous rocks KW - environmental effects KW - Cenozoic KW - stratosphere KW - volcanism KW - time factor KW - basalts KW - pahoehoe KW - sulfur dioxide KW - Columbia River Basalt Group KW - atmosphere KW - Miocene KW - emplacement KW - volatiles KW - Tertiary KW - lava KW - Neogene KW - magmas KW - eruptions KW - volcanoes KW - mass extinctions KW - 22:Environmental geology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700098184?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Self%2C+Stephen%3BGlaze%2C+Lori+S%3BSchmidt%2C+Anja%3BMather%2C+Tamsin+A&rft.aulast=Self&rft.aufirst=Stephen&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=9781107058378&rft.btitle=Volatile+release+from+flood+basalt+eruptions%3B+understanding+the+potential+environmental+effects&rft.title=Volatile+release+from+flood+basalt+eruptions%3B+understanding+the+potential+environmental+effects&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 42 N1 - Document feature - illus. N1 - Last updated - 2015-07-30 ER - TY - BOOK T1 - The environmental and climatic impacts of volcanic ash deposition AN - 1700098153; 2015-073282 JF - Volcanism and global environmental change AU - Jones, Morgan T Y1 - 2015 PY - 2015 DA - 2015 PB - Cambridge University Press, Cambridge SN - 9781107058378 KW - silicates KW - albedo KW - photosynthesis KW - plumes KW - ecosystems KW - vegetation KW - explosive eruptions KW - environmental effects KW - burial KW - carbon dioxide KW - atmospheric circulation KW - carbon KW - cooling KW - ecology KW - volcanic ash KW - climate forcing KW - benthic environment KW - climate KW - productivity KW - toxic materials KW - ocean circulation KW - food chains KW - global KW - photochemistry KW - weathering KW - nutrients KW - deposition KW - marine environment KW - residence time KW - volume KW - solar radiation KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700098153?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Jones%2C+Morgan+T&rft.aulast=Jones&rft.aufirst=Morgan&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=9781107058378&rft.btitle=The+environmental+and+climatic+impacts+of+volcanic+ash+deposition&rft.title=The+environmental+and+climatic+impacts+of+volcanic+ash+deposition&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 58 N1 - Document feature - illus. incl. geol. sketch maps N1 - Last updated - 2015-07-30 ER - TY - BOOK T1 - The origin of gases that caused the Permian-Triassic extinction AN - 1700098066; 2015-073275 JF - Volcanism and global environmental change AU - Sobolev, Alexander V AU - Arndt, Nick T AU - Krivolutskaya, Nadezhda A AU - Kuzmin, Dimitry V (Dmitriy V) AU - Sobolev, Stephan V Y1 - 2015 PY - 2015 DA - 2015 PB - Cambridge University Press, Cambridge SN - 9781107058378 KW - volcanic rocks KW - ion probe data KW - igneous rocks KW - halogens KW - mass spectra KW - mantle KW - melt inclusions KW - carbon dioxide KW - Lower Triassic KW - assimilation KW - Siberia KW - plutonic rocks KW - major elements KW - Triassic KW - Permian-Triassic boundary KW - inclusions KW - basalts KW - water content KW - spectra KW - trace elements KW - Asia KW - chlorine KW - sulfur dioxide KW - tholeiite KW - Paleozoic KW - Permian KW - Mesozoic KW - ultramafics KW - gases KW - Siberian Traps KW - Upper Permian KW - paleoenvironment KW - pyroxenite KW - magmas KW - peridotites KW - sulfur KW - fluid inclusions KW - stratigraphic boundary KW - mass extinctions KW - 02C:Geochemistry of rocks, soils, and sediments KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700098066?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Sobolev%2C+Alexander+V%3BArndt%2C+Nick+T%3BKrivolutskaya%2C+Nadezhda+A%3BKuzmin%2C+Dimitry+V+%28Dmitriy+V%29%3BSobolev%2C+Stephan+V&rft.aulast=Sobolev&rft.aufirst=Alexander&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=9781107058378&rft.btitle=The+origin+of+gases+that+caused+the+Permian-Triassic+extinction&rft.title=The+origin+of+gases+that+caused+the+Permian-Triassic+extinction&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 39 N1 - Document feature - illus. incl. strat. cols. N1 - Last updated - 2015-07-30 ER - TY - BOOK T1 - Satellite and aircraft-based techniques to measure volcanic emissions and hazards AN - 1700097889; 2015-073274 JF - Volcanism and global environmental change AU - Pieri, David Y1 - 2015 PY - 2015 DA - 2015 PB - Cambridge University Press, Cambridge SN - 9781107058378 KW - geologic hazards KW - global KW - mapping KW - satellite methods KW - gases KW - multispectral analysis KW - AVHRR KW - mitigation KW - Landsat KW - volcanic risk KW - thermal anomalies KW - sampling KW - volcanism KW - eruptions KW - natural hazards KW - volcanoes KW - orbital observations KW - volcanic ash KW - ASTER instrument KW - ash clouds KW - remote sensing KW - MODIS KW - airborne methods KW - 24:Quaternary geology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700097889?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Pieri%2C+David&rft.aulast=Pieri&rft.aufirst=David&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=9781107058378&rft.btitle=Satellite+and+aircraft-based+techniques+to+measure+volcanic+emissions+and+hazards&rft.title=Satellite+and+aircraft-based+techniques+to+measure+volcanic+emissions+and+hazards&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 34 N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2015-07-30 ER - TY - BOOK T1 - Volcanic emissions; short-term perturbations, long-term consequences and global environmental change AN - 1700097880; 2015-073279 JF - Volcanism and global environmental change AU - Mather, Tamsin A AU - Pyle, David M Y1 - 2015 PY - 2015 DA - 2015 PB - Cambridge University Press, Cambridge SN - 9781107058378 KW - flood basalts KW - Tambora KW - plumes KW - Luzon KW - Far East KW - volcanic rocks KW - igneous rocks KW - Indonesia KW - global change KW - Deccan Traps KW - explosive eruptions KW - environmental effects KW - India KW - carbon dioxide KW - feedback KW - Mount Pinatubo KW - Indian Peninsula KW - volcanism KW - basalts KW - Lesser Sunda Islands KW - Asia KW - degassing KW - sulfur dioxide KW - sulfates KW - atmosphere KW - gases KW - pyroclastics KW - volatiles KW - Philippine Islands KW - aerosols KW - large igneous provinces KW - temporal distribution KW - 22:Environmental geology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700097880?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Mather%2C+Tamsin+A%3BPyle%2C+David+M&rft.aulast=Mather&rft.aufirst=Tamsin&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=9781107058378&rft.btitle=Volcanic+emissions%3B+short-term+perturbations%2C+long-term+consequences+and+global+environmental+change&rft.title=Volcanic+emissions%3B+short-term+perturbations%2C+long-term+consequences+and+global+environmental+change&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 80 N1 - Document feature - illus. incl. 2 tables, geol. sketch map N1 - Last updated - 2015-07-30 ER - TY - BOOK T1 - Oceanic anoxia during the Permian-Triassic transition and links to volcanism AN - 1700097810; 2015-073283 JF - Volcanism and global environmental change AU - Schaal, Ellen K AU - Meyer, Katja M AU - Lau, Kimberly V AU - Silva-Tamayo, Juan Carlos AU - Payne, Jonathan L Y1 - 2015 PY - 2015 DA - 2015 PB - Cambridge University Press, Cambridge SN - 9781107058378 KW - isotopes KW - oceanic anoxic events KW - cerium KW - Lower Triassic KW - black shale KW - Siberia KW - sedimentary rocks KW - volcanism KW - Triassic KW - molybdenum KW - Permian-Triassic boundary KW - rare earths KW - Asia KW - sedimentary structures KW - Eh KW - Paleozoic KW - biogenic structures KW - Permian KW - paleogeography KW - biomarkers KW - Mesozoic KW - Siberian Traps KW - Upper Permian KW - metals KW - sulfur KW - anaerobic environment KW - pyrite KW - uranium KW - stratigraphic boundary KW - mass extinctions KW - sulfides KW - clastic rocks KW - bioturbation KW - actinides KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700097810?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Schaal%2C+Ellen+K%3BMeyer%2C+Katja+M%3BLau%2C+Kimberly+V%3BSilva-Tamayo%2C+Juan+Carlos%3BPayne%2C+Jonathan+L&rft.aulast=Schaal&rft.aufirst=Ellen&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=9781107058378&rft.btitle=Oceanic+anoxia+during+the+Permian-Triassic+transition+and+links+to+volcanism&rft.title=Oceanic+anoxia+during+the+Permian-Triassic+transition+and+links+to+volcanism&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 70 N1 - Document feature - illus. incl. 1 table, sketch maps N1 - Last updated - 2015-07-30 ER - TY - BOOK T1 - High-precision U-Pb geochronology of Phanerozoic large igneous provinces AN - 1700097759; 2015-073269 JF - Volcanism and global environmental change AU - Burgess, Seth D AU - Blackburn, Terrence J AU - Bowring, Samuel A Y1 - 2015 PY - 2015 DA - 2015 PB - Cambridge University Press, Cambridge SN - 9781107058378 KW - silicates KW - methods KW - U/Pb KW - igneous rocks KW - mafic composition KW - Central Atlantic magmatic province KW - chronology KW - Triassic KW - orthosilicates KW - Upper Triassic KW - zircon group KW - Ar/Ar KW - precision KW - zircon KW - Mesozoic KW - nesosilicates KW - Phanerozoic KW - chemical abrasion method KW - metals KW - thorium KW - crystallization KW - large igneous provinces KW - mass extinctions KW - corrections KW - actinides KW - accuracy KW - 03:Geochronology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700097759?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Burgess%2C+Seth+D%3BBlackburn%2C+Terrence+J%3BBowring%2C+Samuel+A&rft.aulast=Burgess&rft.aufirst=Seth&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=9781107058378&rft.btitle=High-precision+U-Pb+geochronology+of+Phanerozoic+large+igneous+provinces&rft.title=High-precision+U-Pb+geochronology+of+Phanerozoic+large+igneous+provinces&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 63 N1 - Document feature - illus. N1 - Last updated - 2015-07-30 ER - TY - JOUR T1 - Using results from the PlioMIP ensemble to investigate the Greenland ice sheet during the Mid-Pliocene Warm Period AN - 1700097741; 2015-071083 AB - During an interval of the Late Pliocene, referred to here as the mid-Pliocene Warm Period (mPWP; 3.264 to 3.025 million years ago), global mean temperature was similar to that predicted for the end of this century, and atmospheric carbon dioxide concentrations were higher than pre-industrial levels. Sea level was also higher than today, implying a significant reduction in the extent of the ice sheets. Thus, the mPWP provides a natural laboratory in which to investigate the long-term response of the Earth's ice sheets and sea level in a warmer-than-present-day world. At present, our understanding of the Greenland ice sheet during the mPWP is generally based upon predictions using single climate and ice sheet models. Therefore, it is essential that the model dependency of these results is assessed. The Pliocene Model Intercomparison Project (PlioMIP) has brought together nine international modelling groups to simulate the warm climate of the Pliocene. Here we use the climatological fields derived from the results of the 15 PlioMIP climate models to force an offline ice sheet model. We show that mPWP ice sheet reconstructions are highly dependent upon the forcing climatology used, with Greenland reconstructions ranging from an ice-free state to a near-modern ice sheet. An analysis of the surface albedo variability between the climate models over Greenland offers insights into the drivers of inter-model differences. As we demonstrate that the climate model dependency of our results is high, we highlight the necessity of data-based constraints of ice extent in developing our understanding of the mPWP Greenland ice sheet. JF - Climate of the Past AU - Dolan, A M AU - Hunter, S J AU - Hill, D J AU - Haywood, A M AU - Koenig, S J AU - Otto-Bliesner, B L AU - Abe-Ouchi, A AU - Bragg, F AU - Chan, W L AU - Chandler, M A AU - Contoux, C AU - Jost, A AU - Kamae, Y AU - Lohmann, G AU - Lunt, D J AU - Ramstein, G AU - Rosenbloom, N A AU - Sohl, L AU - Stepanek, C AU - Ueda, H AU - Yan, Q AU - Zhang, Z Y1 - 2015 PY - 2015 DA - 2015 SP - 403 EP - 424 PB - Copernicus, Katlenburg-Lindau VL - 11 IS - 3 SN - 1814-9324, 1814-9324 KW - glacial extent KW - sea ice KW - model dependency KW - Greenland ice sheet KW - solar forcing KW - ice cover KW - upper Pliocene KW - Mid-Pliocene Warm Period KW - atmospheric precipitation KW - vegetation KW - Pliocene Ice Sheet Modeling Intercomparison Project KW - simulation KW - PlioMIP KW - paleoclimatology KW - climate change KW - feedback KW - Cenozoic KW - Greenland KW - thermal anomalies KW - sensitivity analysis KW - paleotemperature KW - mass balance KW - ice KW - thickness KW - BASISM KW - climate forcing KW - general circulation models KW - numerical models KW - annual variations KW - Arctic region KW - elevation KW - distribution KW - ice sheets KW - boundary conditions KW - sea-level equivalent KW - models KW - Tertiary KW - Neogene KW - climate models KW - volume KW - Pliocene KW - seasonal variations KW - reconstruction KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700097741?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Climate+of+the+Past&rft.atitle=Using+results+from+the+PlioMIP+ensemble+to+investigate+the+Greenland+ice+sheet+during+the+Mid-Pliocene+Warm+Period&rft.au=Dolan%2C+A+M%3BHunter%2C+S+J%3BHill%2C+D+J%3BHaywood%2C+A+M%3BKoenig%2C+S+J%3BOtto-Bliesner%2C+B+L%3BAbe-Ouchi%2C+A%3BBragg%2C+F%3BChan%2C+W+L%3BChandler%2C+M+A%3BContoux%2C+C%3BJost%2C+A%3BKamae%2C+Y%3BLohmann%2C+G%3BLunt%2C+D+J%3BRamstein%2C+G%3BRosenbloom%2C+N+A%3BSohl%2C+L%3BStepanek%2C+C%3BUeda%2C+H%3BYan%2C+Q%3BZhang%2C+Z&rft.aulast=Dolan&rft.aufirst=A&rft.date=2015-01-01&rft.volume=11&rft.issue=3&rft.spage=403&rft.isbn=&rft.btitle=&rft.title=Climate+of+the+Past&rft.issn=18149324&rft_id=info:doi/ L2 - http://www.clim-past.net/11/403/2015/cp-11-403-2015.pdf http://www.climate-of-the-past.net/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from Copernicus Gesellschaft, Katlenburg-Lindau, Germany N1 - Date revised - 2015-01-01 N1 - Number of references - 126 N1 - Document feature - illus. incl. 5 tables, sketch maps N1 - Last updated - 2015-11-19 N1 - SubjectsTermNotLitGenreText - annual variations; Arctic region; atmospheric precipitation; BASISM; boundary conditions; Cenozoic; climate change; climate forcing; climate models; distribution; elevation; feedback; general circulation models; glacial extent; Greenland; Greenland ice sheet; ice; ice cover; ice sheets; mass balance; Mid-Pliocene Warm Period; model dependency; models; Neogene; numerical models; paleoclimatology; paleotemperature; Pliocene; Pliocene Ice Sheet Modeling Intercomparison Project; PlioMIP; reconstruction; sea ice; sea-level equivalent; seasonal variations; sensitivity analysis; simulation; solar forcing; Tertiary; thermal anomalies; thickness; upper Pliocene; vegetation; volume ER - TY - BOOK T1 - Volcanic pulses in the Siberian Traps as inferred from Permo-Triassic geomagnetic secular variations AN - 1700097394; 2015-073270 JF - Volcanism and global environmental change AU - Pavlov, Vladimir AU - Fluteau, Frederic AU - Veselovskiy, Roman AU - Fetisova, Anna AU - Latyshev, Anton AU - Elkins-Tanton, Linda T AU - Sobolev, Alexander V AU - Krivolutskaya, Nadezhda A Y1 - 2015 PY - 2015 DA - 2015 PB - Cambridge University Press, Cambridge SN - 9781107058378 KW - Taymyr Dolgan-Nenets Russian Federation KW - secular variations KW - Paleozoic KW - Maymecha River KW - paleomagnetism KW - Russian Federation KW - magnetostratigraphy KW - Permian KW - Arydzhangskiy Formation KW - Mesozoic KW - Siberian Traps KW - Krasnoyarsk Russian Federation KW - Commonwealth of Independent States KW - volcanism KW - Triassic KW - eruptions KW - Kotuy River KW - Asia KW - Onkuchakskiy Formation KW - Norilsk region KW - 12:Stratigraphy KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700097394?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Pavlov%2C+Vladimir%3BFluteau%2C+Frederic%3BVeselovskiy%2C+Roman%3BFetisova%2C+Anna%3BLatyshev%2C+Anton%3BElkins-Tanton%2C+Linda+T%3BSobolev%2C+Alexander+V%3BKrivolutskaya%2C+Nadezhda+A&rft.aulast=Pavlov&rft.aufirst=Vladimir&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=9781107058378&rft.btitle=Volcanic+pulses+in+the+Siberian+Traps+as+inferred+from+Permo-Triassic+geomagnetic+secular+variations&rft.title=Volcanic+pulses+in+the+Siberian+Traps+as+inferred+from+Permo-Triassic+geomagnetic+secular+variations&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 25 N1 - Document feature - illus. incl. 2 tables, strat. cols., geol. sketch maps N1 - Last updated - 2015-07-30 ER - TY - BOOK T1 - Quantification of volcanic reactive halogen emissions AN - 1700097370; 2015-073273 JF - Volcanism and global environmental change AU - Platt, Ulrich AU - Bobrowski, Nicole Y1 - 2015 PY - 2015 DA - 2015 PB - Cambridge University Press, Cambridge SN - 9781107058378 KW - chlorine KW - sulfur dioxide KW - plumes KW - monitoring KW - in situ KW - differential optical absorption spectroscopy KW - halogens KW - atmosphere KW - bromine KW - gases KW - absorption KW - volatiles KW - reactivity KW - quantitative analysis KW - fluorine KW - magmas KW - eruptions KW - volcanoes KW - transformations KW - chemical composition KW - spectroscopy KW - remote sensing KW - 24:Quaternary geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700097370?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Platt%2C+Ulrich%3BBobrowski%2C+Nicole&rft.aulast=Platt&rft.aufirst=Ulrich&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=9781107058378&rft.btitle=Quantification+of+volcanic+reactive+halogen+emissions&rft.title=Quantification+of+volcanic+reactive+halogen+emissions&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 64 N1 - Document feature - illus. incl. sketch map N1 - Last updated - 2015-07-30 ER - TY - BOOK T1 - Evidence for volcanism triggering extinctions; a short history of IPGP contributions with emphasis on paleomagnetism AN - 1700097238; 2015-073280 JF - Volcanism and global environmental change AU - Courtillot, Vincent AU - Fluteau, Frederic AU - Besse, Jean Y1 - 2015 PY - 2015 DA - 2015 PB - Cambridge University Press, Cambridge SN - 9781107058378 KW - flood basalts KW - lower Paleocene KW - volcanic rocks KW - Cretaceous KW - igneous rocks KW - seismic anomalies KW - global change KW - Deccan Traps KW - paleoclimatology KW - Upper Cretaceous KW - climate change KW - India KW - carbon dioxide KW - Cenozoic KW - Indian Peninsula KW - volcanism KW - Paleocene KW - basalts KW - cooling KW - Asia KW - mantle plumes KW - global warming KW - sulfur dioxide KW - atmosphere KW - paleomagnetism KW - Paleogene KW - Mesozoic KW - Tertiary KW - K-T boundary KW - volume KW - aerosols KW - large igneous provinces KW - temporal distribution KW - stratigraphic boundary KW - mass extinctions KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700097238?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Courtillot%2C+Vincent%3BFluteau%2C+Frederic%3BBesse%2C+Jean&rft.aulast=Courtillot&rft.aufirst=Vincent&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=9781107058378&rft.btitle=Evidence+for+volcanism+triggering+extinctions%3B+a+short+history+of+IPGP+contributions+with+emphasis+on+paleomagnetism&rft.title=Evidence+for+volcanism+triggering+extinctions%3B+a+short+history+of+IPGP+contributions+with+emphasis+on+paleomagnetism&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 61 N1 - Document feature - illus. incl. geol. sketch maps N1 - Last updated - 2015-07-30 ER - TY - BOOK T1 - Halogen release from plinian eruptions and depletion of stratospheric ozone AN - 1700097226; 2015-073281 JF - Volcanism and global environmental change AU - Kruger, Kirstin AU - Kutterolf, Steffen AU - Hansteen, Thor H Y1 - 2015 PY - 2015 DA - 2015 PB - Cambridge University Press, Cambridge SN - 9781107058378 KW - chlorine KW - subduction zones KW - halogens KW - plinian-type eruptions KW - bromine KW - explosive eruptions KW - environmental effects KW - gases KW - volatiles KW - ozone KW - stratosphere KW - volcanism KW - eruptions KW - depletion KW - Central America KW - climate KW - 24:Quaternary geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700097226?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Kruger%2C+Kirstin%3BKutterolf%2C+Steffen%3BHansteen%2C+Thor+H&rft.aulast=Kruger&rft.aufirst=Kirstin&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=9781107058378&rft.btitle=Halogen+release+from+plinian+eruptions+and+depletion+of+stratospheric+ozone&rft.title=Halogen+release+from+plinian+eruptions+and+depletion+of+stratospheric+ozone&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 72 N1 - Document feature - illus. incl. 1 table, sketch map N1 - Last updated - 2015-07-30 ER - TY - BOOK T1 - On the nature and consequences of super-eruptions AN - 1700097166; 2015-073267 JF - Volcanism and global environmental change AU - Oppenheimer, Clive AU - Donovan, Amy Y1 - 2015 PY - 2015 DA - 2015 PB - Cambridge University Press, Cambridge SN - 9781107058378 KW - Tambora KW - Far East KW - volcanic rocks KW - geologic hazards KW - igneous rocks KW - Indonesia KW - super-eruptions KW - frequency KW - North Island KW - mass KW - Cenozoic KW - volcanic features KW - pyroclastic flows KW - future KW - acidic composition KW - Lesser Sunda Islands KW - Asia KW - Taupo KW - eruption magnitude KW - Australasia KW - ignimbrite KW - super-volcanoes KW - Paleogene KW - calderas KW - pyroclastics KW - Tertiary KW - ash falls KW - magmas KW - eruptions KW - volume KW - natural hazards KW - volcanoes KW - Fish Canyon Tuff KW - New Zealand KW - magma chambers KW - Oligocene KW - 24:Quaternary geology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700097166?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Oppenheimer%2C+Clive%3BDonovan%2C+Amy&rft.aulast=Oppenheimer&rft.aufirst=Clive&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=9781107058378&rft.btitle=On+the+nature+and+consequences+of+super-eruptions&rft.title=On+the+nature+and+consequences+of+super-eruptions&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 66 N1 - Document feature - illus. N1 - Last updated - 2015-07-30 ER - TY - JOUR T1 - Space erosion and cosmic ray exposure ages of stony meteorites AN - 1696874211; 2015-067003 AB - Space erosion from dust impacts may set upper limits on the cosmic ray exposure (CRE) ages of stony meteorites. A meteoroid orbiting within the asteroid belt is bombarded by both cosmic rays and interplanetary dust particles. Galactic cosmic rays penetrate only the first few meters of the meteoroid; deeper regions are shielded. The dust particle impacts create tiny craters on the meteoroid' surface, eroding it away by abrasion at a particular rate. Hence a particular point inside a meteoroid accumulates cosmic ray products only until that point wears away, limiting CRE ages. The results would apply to other regolith-free surfaces in the Solar System as well, so that abrasion may set upper CRE age limits which depend on the dusty environment. Calculations based on N. Divine's dust populations and on micrometeoroid cratering indicate that large stony meteoroids in circular ecliptic orbits at 2 AU will record (super 21) Ne CRE ages of approximately 176 + or - 10 (super 6) y if dust masses are in the range 10 (super -21) -10 (super -3) kg. This is in broad agreement with the maximum observed CRE ages of approximately 100 X 10 (super 6) y for stones. High erosion rates in the inner Solar System may limit the CRE ages of Near-Earth Asteroids (NEAs) to approximately 120 X 10 (super 6) y. A characteristic of erosion is that the neon concentrations tend to rise as the surface of the meteorite is approached, rather than drop off as for meteorites with fixed radii. Pristine samples recovered from space may show the rise. If the abrasion rate for stones were a factor of approximately 6 larger than found here, then the ages would drop into the 30 X 10 (super 6) y range, so that abrasion alone might be able to explain many CRE ages. However, there is no strong evidence for higher abrasion rates, and in any case would probably not be fast enough to explain the youngest ages of 0.1-1 X 10 (super 6) y. Further, space erosion is much too slow to explain the approximately 600 X 10 (super 6) y ages of iron meteorites. JF - Icarus AU - Rubincam, David Parry Y1 - 2015/01/01/ PY - 2015 DA - 2015 Jan 01 SP - 112 EP - 121 PB - Elsevier, New York, NY VL - 245 SN - 0019-1035, 0019-1035 KW - Ne-21 KW - stony meteorites KW - isotopes KW - erosion KW - erosion rates KW - meteoroids KW - interplanetary dust KW - exposure age KW - stable isotopes KW - meteorites KW - cosmic dust KW - iron meteorites KW - noble gases KW - neon KW - abrasion KW - cosmic rays KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696874211?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Space+erosion+and+cosmic+ray+exposure+ages+of+stony+meteorites&rft.au=Rubincam%2C+David+Parry&rft.aulast=Rubincam&rft.aufirst=David&rft.date=2015-01-01&rft.volume=245&rft.issue=&rft.spage=112&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.09.005 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 46 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-07-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - abrasion; cosmic dust; cosmic rays; erosion; erosion rates; exposure age; interplanetary dust; iron meteorites; isotopes; meteorites; meteoroids; Ne-21; neon; noble gases; stable isotopes; stony meteorites DO - http://dx.doi.org/10.1016/j.icarus.2014.09.005 ER - TY - JOUR T1 - Micrometer-scale U-Pb age domains in eucrite zircons, impact re-setting, and the thermal history of the HED parent body AN - 1696873985; 2015-067017 AB - Meteoritic zircons are rare, but some are documented to occur in asteroidal meteorites, including those of the howardite-eucrite-diogenite (HED) achondrite clan (Rubin, A. [1997]. Meteorit. Planet. Sci. 32, 231-247). The HEDs are widely considered to originate from the Asteroid 4 Vesta. Vesta and the other large main belt asteroids record an early bombardment history. To explore this record, we describe sub-micrometer distributions of trace elements (U, Th) and (super 235,238) U- (super 207,206) Pb ages from four zircons (>7-40 mu m ?) separated from bulk samples of the brecciated eucrite Millbillillie. Ultra-high resolution ( approximately 100 nm) ion microprobe depth profiles reveal different zircon age domains correlative to mineral chemistry and to possible impact scenarios. Our new U-Pb zircon geochronology shows that Vesta's crust solidified within a few million years of Solar System formation (4561 + or -13 Ma), in good agreement with previous work (e.g. Carlson, R.W., Lugmair, G.W. [2000]. Timescales of planetesimal formation and differentiation based on extinct and extant radioisotopes. In: Canup, R., Righter, K. (Eds.), Origin of the Earth and Moon. University of Arizona Press, Tucson, pp. 25-44). Younger zircon age domains (ca. 4530 Ma) also record crustal processes, but these are interpreted to be exogenous because they are well after the effective extinction of (super 26) Al (t (sub 1/2) = 0.72 Myr). An origin via impact-resetting was evaluated with a suite of analytical impact models. Output shows that if a single impactor was responsible for the ca. 4530 Ma zircon ages, it had to have been approximately 10 km in diameter and at high enough velocity (>5 km s (super -1) ) to account for the thermal field required to re-set U-Pb ages. Such an impact would have penetrated at least 10 km into Vesta's crust. Later events at ca. 4200 Ma are documented in HED apatite (super 235,238) U- (super 207,206) Pb ages (Zhou, Q. et al. [2011]. Early basaltic volcanism and Late Heavy Bombardment on Vesta: U-Pb ages of small zircons and phosphates in eucrites. Lunar Planet. Sci. 42. Abstract 75) and (super 40-39) Ar age spectra (Bogard, D.D. [2011]. Chem. Erde 71, 207-226). Yet younger ages, including those coincident with the Late Heavy Bombardment (LHB; ca. 3900 Ma), are absent from Millbillillie zircon. This is attributable to primordial changes to the velocity distributions of impactors in the asteroid belt, and differences in mineral closure temperatures (Tc zircon >> apatite). JF - Icarus AU - Hopkins, M D AU - Mojzsis, S J AU - Bottke, W F AU - Abramov, O Y1 - 2015/01/01/ PY - 2015 DA - 2015 Jan 01 SP - 367 EP - 378 PB - Elsevier, New York, NY VL - 245 SN - 0019-1035, 0019-1035 KW - silicates KW - U/Pb KW - stony meteorites KW - ion probe data KW - late heavy bombardment KW - mass spectra KW - thermal history KW - recrystallization KW - Millbillillie Meteorite KW - meteorites KW - U/Th/Pb KW - dates KW - orthosilicates KW - absolute age KW - velocity KW - spectra KW - zircon group KW - parent bodies KW - HED meteorites KW - zircon KW - thermal metamorphism KW - impacts KW - metamorphism KW - achondrites KW - early solar system KW - nesosilicates KW - eucrite KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696873985?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Micrometer-scale+U-Pb+age+domains+in+eucrite+zircons%2C+impact+re-setting%2C+and+the+thermal+history+of+the+HED+parent+body&rft.au=Hopkins%2C+M+D%3BMojzsis%2C+S+J%3BBottke%2C+W+F%3BAbramov%2C+O&rft.aulast=Hopkins&rft.aufirst=M&rft.date=2015-01-01&rft.volume=245&rft.issue=&rft.spage=367&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.08.025 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 110 N1 - PubXState - NY N1 - Document feature - illus. N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-07-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - absolute age; achondrites; dates; early solar system; eucrite; HED meteorites; impacts; ion probe data; late heavy bombardment; mass spectra; metamorphism; meteorites; Millbillillie Meteorite; nesosilicates; orthosilicates; parent bodies; recrystallization; silicates; spectra; stony meteorites; thermal history; thermal metamorphism; U/Pb; U/Th/Pb; velocity; zircon; zircon group DO - http://dx.doi.org/10.1016/j.icarus.2014.08.025 ER - TY - JOUR T1 - Nano particles as the primary cause for long-term sunlight suppression at high southern latitudes following the Chicxulub impact; evidence from ejecta deposits in Belize and Mexico AN - 1692746688; 2015-062021 AB - Life on Earth was sharply disrupted 66 Ma ago as an asteroid hit the sea-floor in what is today Yucatan Peninsula, Mexico. Approximately 600 km (super 3) of sedimentary rock were vaporized, ejected into the atmosphere and subsequently deposited globally as an ejecta apron and fallout layer. Proximal ejecta deposits occur in Belize and southern Mexico where the so called Albion island spheroid bed is superimposed on the target rock (the Barton Creek Formation). We analysed the spheroid bed via Moessbauer spectroscopy, petrology, XRD, and palynology at several sites approximately 350-500 km distance from the crater centre. Our results show that the relative concentrations of Fe in nano-phase goethite (alpha -FeOOH) are very high in the spheroid bed samples from Albion Island (Belize) and from Ramonal South (Mexico), but are low to absent in the spheroid bed at Ramonal North, and in the Cretaceous target rock. Moreover, our study shows that goethite and haematite are the dominant Fe-oxide nano-phases and the XRD results show that the target rock consists of both calcite and dolomite. We suggest that the heterogeneous composition of the spheroid bed between the various sites reflects the different types of target rocks that were dispersed within the rapidly expanding vapor plume and the complex sorting processes involved in the formation of the ejecta blanket. The distribution of the vaporized target rock strongly influenced life on Earth at the close of the Mesozoic. However, the comparatively thin K-Pg boundary clay in high-latitude Gondwanan successions combined with evidence of catastrophic changes to the biota in this region implies that the long-term sunlight suppression in the Southern Hemisphere was mainly governed by the large quantities of hydrous aerosols nucleated around sulfuric acid droplets or nano-sized particles, such as the nano-phase Fe-oxides. Abstract Copyright (2015) Elsevier, B.V. JF - Gondwana Research AU - Vajda, Vivi AU - Ocampo, Adriana AU - Ferrow, Embaie AU - Koch, Christian Bender Y1 - 2015 PY - 2015 DA - 2015 SP - 1079 EP - 1088 PB - Elsevier on behalf of International Association for Gondwana Research, Amsterdam and Kochi VL - 27 IS - 3 SN - 1342-937X, 1342-937X KW - succession KW - impact features KW - goethite KW - asteroids KW - X-ray diffraction data KW - Albion Formation KW - mechanism KW - vegetation KW - paleoclimatology KW - Upper Cretaceous KW - climate change KW - Albion Island KW - hematite KW - Paleocene KW - composition KW - palynology KW - Chicxulub Crater KW - fallout KW - Mossbauer spectra KW - global KW - atmosphere KW - Paleogene KW - lapilli KW - impacts KW - ejecta KW - distribution KW - biota KW - Tertiary KW - Mexico KW - atmospheric transport KW - K-T boundary KW - petrography KW - aerosols KW - nanoparticles KW - Belize KW - lower Paleocene KW - Cretaceous KW - Cenozoic KW - transport KW - impact winters KW - Barton Creek Formation KW - oxides KW - spectra KW - heterogeneity KW - Quintana Roo Mexico KW - spherules KW - petrology KW - iron minerals KW - Yucatan Peninsula KW - sunlight suppression KW - Mesozoic KW - Armenia Belize KW - Ramonal Mexico KW - stratigraphic boundary KW - mass extinctions KW - Central America KW - tektites KW - 05B:Petrology of meteorites and tektites KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692746688?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Gondwana+Research&rft.atitle=Nano+particles+as+the+primary+cause+for+long-term+sunlight+suppression+at+high+southern+latitudes+following+the+Chicxulub+impact%3B+evidence+from+ejecta+deposits+in+Belize+and+Mexico&rft.au=Vajda%2C+Vivi%3BOcampo%2C+Adriana%3BFerrow%2C+Embaie%3BKoch%2C+Christian+Bender&rft.aulast=Vajda&rft.aufirst=Vivi&rft.date=2015-01-01&rft.volume=27&rft.issue=3&rft.spage=1079&rft.isbn=&rft.btitle=&rft.title=Gondwana+Research&rft.issn=1342937X&rft_id=info:doi/10.1016%2Fj.gr.2014.05.009 L2 - http://www.sciencedirect.com/science/journal/1342937X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2015-01-01 N1 - Number of references - 52 N1 - Document feature - illus. incl. strat. cols., sketch map N1 - Last updated - 2015-11-19 N1 - SubjectsTermNotLitGenreText - aerosols; Albion Formation; Albion Island; Armenia Belize; asteroids; atmosphere; atmospheric transport; Barton Creek Formation; Belize; biota; Cenozoic; Central America; Chicxulub Crater; climate change; composition; Cretaceous; distribution; ejecta; fallout; global; goethite; hematite; heterogeneity; impact features; impact winters; impacts; iron minerals; K-T boundary; lapilli; lower Paleocene; mass extinctions; mechanism; Mesozoic; Mexico; Mossbauer spectra; nanoparticles; oxides; Paleocene; paleoclimatology; Paleogene; palynology; petrography; petrology; Quintana Roo Mexico; Ramonal Mexico; spectra; spherules; stratigraphic boundary; succession; sunlight suppression; tektites; Tertiary; transport; Upper Cretaceous; vegetation; X-ray diffraction data; Yucatan Peninsula DO - http://dx.doi.org/10.1016/j.gr.2014.05.009 ER - TY - JOUR T1 - Unprecedented 21st century drought risk in the American Southwest and Central Plains AN - 1692742521; 2015-060360 JF - Science Advances AU - Cook, Benjamin I AU - Ault, Toby R AU - Smerdon, Jason E Y1 - 2015 PY - 2015 DA - 2015 EP - e1400082 PB - American Association for the Advancement of Science, Washington, DC VL - 1 IS - 1 KW - United States KW - North America KW - general circulation models KW - Quaternary KW - global change KW - Southwestern U.S. KW - paleoclimatology KW - Holocene KW - climate change KW - drought KW - Cenozoic KW - Middle Ages KW - Great Plains KW - risk assessment KW - reconstruction KW - central Great Plains KW - upper Holocene KW - Medieval Warm Period KW - global warming KW - 24:Quaternary geology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692742521?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science+Advances&rft.atitle=Unprecedented+21st+century+drought+risk+in+the+American+Southwest+and+Central+Plains&rft.au=Cook%2C+Benjamin+I%3BAult%2C+Toby+R%3BSmerdon%2C+Jason+E&rft.aulast=Cook&rft.aufirst=Benjamin&rft.date=2015-01-01&rft.volume=1&rft.issue=1&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Science+Advances&rft.issn=2375-2548&rft_id=info:doi/10.1126%2Fsciadv.1400082 L2 - http://advances.sciencemag.org/content/1/2 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 35 N1 - PubXState - DC N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2015-11-19 N1 - SubjectsTermNotLitGenreText - Cenozoic; central Great Plains; climate change; drought; general circulation models; global change; global warming; Holocene; Medieval Warm Period; Middle Ages; North America; paleoclimatology; Quaternary; reconstruction; risk assessment; Southwestern U.S.; United States; upper Holocene; Great Plains DO - http://dx.doi.org/10.1126/sciadv.1400082 ER - TY - JOUR T1 - Image mosaic and topographic map of the moon AN - 1689592172; 2015-058082 AB - Sheet 1: This image mosaic is based on data from the Lunar Reconnaissance Orbiter Wide Angle Camera (WAC; Robinson and others, 2010), an instrument on the National Aeronautics and Space Administration (NASA) Lunar Reconnaissance Orbiter (LRO) spacecraft (Tooley and others, 2010). The equatorial WAC images were orthorectified onto the Global Lunar Digital Terrain Mosaic (GLD100, WAC-derived 100 m/pixel digital elevation model; Scholten and others, 2012) while the polar images were orthorectified onto the lunar LOLA polar digital elevation models (Neumann and others, 2010). The Mercator projection is used between latitudes + or -57 degrees , with a central meridian at 0 degrees longitude and latitude equal to the nominal scale at 0 degrees . The Polar Stereographic projection is used for the regions north of the +55 degrees parallel and south of the -55 degrees parallel, with a central meridian set for both at 0 degrees and a latitude of true scale at +90 degrees and -90 degrees , respectively. All named features greater than 85 km in diameter or length were included unless they were not visible on the map. Some selected well-known features less than 85 km in size were also included. For listed references, please open the full PDF. Sheet 2: This map is based on data from the Lunar Orbiter Laser Altimeter (LOLA; Smith and others, 2010), an instrument on the National Aeronautics and Space Administration (NASA) Lunar Reconnaissance Orbiter (LRO) spacecraft (Tooley and others, 2010). The image used for the base of this map represents more than 6.5 billion measurements gathered between July 2009 and July 2013, adjusted for consistency in the coordinate system described below, and then converted to lunar radii (Mazarico and others, 2012). For the Mercator portion, these measurements were converted into a digital elevation model (DEM) with a resolution of 0.015625 degrees per pixel, or 64 pixels per degree. In projection, the pixels are 473.8 m in size at the equator. For the polar portion, the LOLA elevation points were used to create a DEM at 240 meters per pixel. A shaded relief map was generated from each DEM with a sun angle of 45 degrees from horizontal, and a sun azimuth of 270 degrees , as measured clockwise from north with no vertical exaggeration. The DEM values were then mapped to a global color look-up table, with each color representing a range of 1 km of elevation. For this map sheet, only larger feature names are shown. For references listed above, please open the full PDF. JF - Scientific Investigations Map AU - Hare, Trent M AU - Hayward, Rosalyn K AU - Blue, Jennifer S AU - Archinal, Brent A AU - Robinson, Mark S AU - Speyerer, Emerson J AU - Smith, David E AU - Zuber, Maria T AU - Neumann, Gregory A AU - Mazarico, Erwan Y1 - 2015 PY - 2015 DA - 2015 EP - 2 sheet PB - U. S. Geological Survey, Reston, VA SN - 2329-1311, 2329-1311 KW - Scale: 1:10,000,000 KW - Type: photogeologic map KW - imagery KW - Moon KW - Lunar Reconnaissance Orbiter KW - space photography KW - digital terrain models KW - photogeologic maps KW - topography KW - mosaics KW - maps KW - photogeology KW - surface features KW - topographic maps KW - USGS KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1689592172?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Scientific+Investigations+Map&rft.atitle=Image+mosaic+and+topographic+map+of+the+moon&rft.au=Hare%2C+Trent+M%3BHayward%2C+Rosalyn+K%3BBlue%2C+Jennifer+S%3BArchinal%2C+Brent+A%3BRobinson%2C+Mark+S%3BSpeyerer%2C+Emerson+J%3BSmith%2C+David+E%3BZuber%2C+Maria+T%3BNeumann%2C+Gregory+A%3BMazarico%2C+Erwan&rft.aulast=Hare&rft.aufirst=Trent&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Scientific+Investigations+Map&rft.issn=23291311&rft_id=info:doi/10.3133%2Fsim3316 L2 - http://pubs.usgs.gov/sim/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 16 N1 - PubXState - VA N1 - SuppNotes - Prepared for the National Aeronautics and Space Administration N1 - Last updated - 2015-06-18 N1 - SubjectsTermNotLitGenreText - digital terrain models; imagery; Lunar Reconnaissance Orbiter; maps; Moon; mosaics; photogeologic maps; photogeology; remote sensing; space photography; surface features; topographic maps; topography; USGS DO - http://dx.doi.org/10.3133/sim3316 ER - TY - JOUR T1 - Assessments of k-kL Turbulence Model Based on Menter's Modification to Rotta's Two-Equation Model AN - 1685775619; PQ0001427805 AB - The main objective of this paper is to construct a turbulence model with a more reliable second equation simulating length scale. In the present paper, we assess the length scale equation based on Menter's modification to Rotta's two-equation model. Rotta shows that a reliable second equation can be formed in an exact transport equation from the turbulent length scale and kinetic energy. Rotta's equation is well suited for a term-by-term modeling and shows some interesting features compared to other approaches. The most important difference is that the formulation leads to a natural inclusion of higher order velocity derivatives into the source terms of the scale equation, which has the potential to enhance the capability of Reynolds-averaged Navier-Stokes to simulate unsteady flows. The model is implemented in the CFD solver with complete formulation, usage methodology, and validation examples to demonstrate its capabilities. The detailed studies include grid convergence. Near-wall and shear flows cases are documented and compared with experimental and large eddy simulation data. The results from this formulation are as good or better than the well-known shear stress turbulence model and much better than k- epsilon results. Overall, the study provides useful insights into the model capability in predicting attached and separated flows. JF - International Journal of Aerospace Engineering AU - Abdol-Hamid, Khaled S AD - NASA Langley Research Center, Hampton, VA 23693, USA k.s.abdol-hamid@nasa.gov Y1 - 2015/01// PY - 2015 DA - Jan 2015 PB - Hindawi Publishing Corporation, P.O. Box 3079 Cuyahoga Falls OH 44223 United States VL - 2015 SN - 1687-5966, 1687-5966 KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Aerospace & High Technology Database (AH) KW - Shear flow KW - Computational fluid dynamics KW - Mathematical models KW - Computer simulation KW - Turbulence models KW - Assessments KW - Navier-Stokes equations KW - Turbulence KW - Mathematical analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1685775619?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=International+Journal+of+Aerospace+Engineering&rft.atitle=Assessments+of+k-kL+Turbulence+Model+Based+on+Menter%27s+Modification+to+Rotta%27s+Two-Equation+Model&rft.au=Abdol-Hamid%2C+Khaled+S&rft.aulast=Abdol-Hamid&rft.aufirst=Khaled&rft.date=2015-01-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=International+Journal+of+Aerospace+Engineering&rft.issn=16875966&rft_id=info:doi/10.1155%2F2015%2F987682 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-06-01 N1 - Last updated - 2015-12-07 DO - http://dx.doi.org/10.1155/2015/987682 ER - TY - JOUR T1 - Aerosol remote sensing in polar regions AN - 1680751044; 2015-044317 AB - Multi-year sets of ground-based sun-photometer measurements conducted at 12 Arctic sites and 9 Antarctic sites were examined to determine daily mean values of aerosol optical thickness tau (lambda ) at visible and near-infrared wavelengths, from which best-fit values of Aangstrom's exponent alpha were calculated. Analysing these data, the monthly mean values of tau (0.50 mu m) and alpha and the relative frequency histograms of the daily mean values of both parameters were determined for winter-spring and summer-autumn in the Arctic and for austral summer in Antarctica. The Arctic and Antarctic covariance plots of the seasonal median values of alpha versus tau (0.50 mu m) showed: (i) a considerable increase in tau (0.50 mu m) for the Arctic aerosol from summer to winter-spring, without marked changes in alpha ; and (ii) a marked increase in tau (0.50 mu m) passing from the Antarctic Plateau to coastal sites, whereas alpha decreased considerably due to the larger fraction of sea-salt aerosol. Good agreement was found when comparing ground-based sun-photometer measurements of tau (lambda ) and alpha at Arctic and Antarctic coastal sites with Microtops measurements conducted during numerous AERONET/MAN cruises from 2006 to 2013 in three Arctic Ocean sectors and in coastal and off-shore regions of the Southern Atlantic, Pacific, and Indian Oceans, and the Antarctic Peninsula. Lidar measurements were also examined to characterise vertical profiles of the aerosol backscattering coefficient measured throughout the year at Ny-Alesund. Satellite-based MODIS, MISR, and AATSR retrievals of tau (lambda ) over large parts of the oceanic polar regions during spring and summer were in close agreement with ship-borne and coastal ground-based sun-photometer measurements. An overview of the chemical composition of mode particles is also presented, based on in-situ measurements at Arctic and Antarctic sites. Fourteen log-normal aerosol number size-distributions were defined to represent the average features of nuclei, accumulation and coarse mode particles for Arctic haze, summer background aerosol, Asian dust and boreal forest fire smoke, and for various background austral summer aerosol types at coastal and high-altitude Antarctic sites. The main columnar aerosol optical characteristics were determined for all 14 particle modes, based on in-situ measurements of the scattering and absorption coefficients. Diurnally averaged direct aerosol-induced radiative forcing and efficiency were calculated for a set of multimodal aerosol extinction models, using various Bidirectional Reflectance Distribution Function models over vegetation-covered, oceanic and snow-covered surfaces. These gave a reliable measure of the pronounced effects of aerosols on the radiation balance of the surface-atmosphere system over polar regions. Abstract Copyright (2015) Elsevier, B.V. JF - Earth-Science Reviews AU - Tomasi, Claudio AU - Kokhanovsky, Alexander A AU - Lupi, Angelo AU - Ritter, Christoph AU - Smirnov, Alexander AU - O'Neill, Norman T AU - Stone, Robert S AU - Holben, Brent N AU - Nyeki, Stephan AU - Wehrli, Christoph AU - Stohl, Andreas AU - Mazzola, Mauro AU - Lanconelli, Christian AU - Vitale, Vito AU - Stebel, Kerstin AU - Aaltonen, Veijo AU - de Leeuw, Gerrit AU - Rodriguez, Edith AU - Herber, Andreas B AU - Radionov, Vladimir F AU - Zielinski, Tymon AU - Petelski, Tomasz AU - Sakerin, Sergey M AU - Kabanov, Dmitry M AU - Xue, Yong AU - Mei, Linlu AU - Istomina, Larysa AU - Wagener, Richard AU - McArthur, Bruce AU - Sobolewski, Piotr S AU - Kivi, Rigel AU - Courcoux, Yann AU - Larouche, Pierre AU - Broccardo, Stephen AU - Piketh, Stuart J Y1 - 2015/01// PY - 2015 DA - January 2015 SP - 108 EP - 157 PB - Elsevier, Amsterdam VL - 140 SN - 0012-8252, 0012-8252 KW - United States KW - advanced along track scanning radiometer KW - Southern Ocean KW - laser methods KW - geophysical surveys KW - aliphatic hydrocarbons KW - AATSR KW - climate change KW - multi-angle image spectroradiometer KW - air pollution KW - photometry KW - radiometers KW - carbon KW - sediments KW - Arctic Ocean KW - climate KW - covariance analysis KW - polar regions KW - methane KW - sulfates KW - clastic sediments KW - pollutants KW - human activity KW - Arctic region KW - ground methods KW - statistical analysis KW - geophysical methods KW - pollution KW - South Pacific KW - alkanes KW - satellite methods KW - MISR KW - measurement KW - organic compounds KW - Antarctica KW - lidar methods KW - Pacific Ocean KW - dust KW - hydrocarbons KW - surveys KW - aerosols KW - Alaska KW - South Atlantic KW - Atlantic Ocean KW - remote sensing KW - MODIS KW - 20:Applied geophysics KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680751044?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Earth-Science+Reviews&rft.atitle=Aerosol+remote+sensing+in+polar+regions&rft.au=Tomasi%2C+Claudio%3BKokhanovsky%2C+Alexander+A%3BLupi%2C+Angelo%3BRitter%2C+Christoph%3BSmirnov%2C+Alexander%3BO%27Neill%2C+Norman+T%3BStone%2C+Robert+S%3BHolben%2C+Brent+N%3BNyeki%2C+Stephan%3BWehrli%2C+Christoph%3BStohl%2C+Andreas%3BMazzola%2C+Mauro%3BLanconelli%2C+Christian%3BVitale%2C+Vito%3BStebel%2C+Kerstin%3BAaltonen%2C+Veijo%3Bde+Leeuw%2C+Gerrit%3BRodriguez%2C+Edith%3BHerber%2C+Andreas+B%3BRadionov%2C+Vladimir+F%3BZielinski%2C+Tymon%3BPetelski%2C+Tomasz%3BSakerin%2C+Sergey+M%3BKabanov%2C+Dmitry+M%3BXue%2C+Yong%3BMei%2C+Linlu%3BIstomina%2C+Larysa%3BWagener%2C+Richard%3BMcArthur%2C+Bruce%3BSobolewski%2C+Piotr+S%3BKivi%2C+Rigel%3BCourcoux%2C+Yann%3BLarouche%2C+Pierre%3BBroccardo%2C+Stephen%3BPiketh%2C+Stuart+J&rft.aulast=Tomasi&rft.aufirst=Claudio&rft.date=2015-01-01&rft.volume=140&rft.issue=&rft.spage=108&rft.isbn=&rft.btitle=&rft.title=Earth-Science+Reviews&rft.issn=00128252&rft_id=info:doi/10.1016%2Fj.earscirev.2014.11.001 L2 - http://www.sciencedirect.com/science/journal/00128252 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2015-01-01 N1 - Number of references - 252 N1 - Document feature - illus. incl. 6 tables N1 - Last updated - 2016-10-25 N1 - CODEN - ESREBW N1 - SubjectsTermNotLitGenreText - AATSR; advanced along track scanning radiometer; aerosols; air pollution; Alaska; aliphatic hydrocarbons; alkanes; Antarctica; Arctic Ocean; Arctic region; Atlantic Ocean; carbon; clastic sediments; climate; climate change; covariance analysis; dust; geophysical methods; geophysical surveys; ground methods; human activity; hydrocarbons; laser methods; lidar methods; measurement; methane; MISR; MODIS; multi-angle image spectroradiometer; organic compounds; Pacific Ocean; photometry; polar regions; pollutants; pollution; radiometers; remote sensing; satellite methods; sediments; South Atlantic; South Pacific; Southern Ocean; statistical analysis; sulfates; surveys; United States DO - http://dx.doi.org/10.1016/j.earscirev.2014.11.001 ER - TY - JOUR T1 - Net ecosystem production and organic carbon balance of U. S. East Coast estuaries; a synthesis approach AN - 1668232728; 2015-029806 AB - Net ecosystem production (NEP) and the overall organic carbon budget for the estuaries along the East Coast of the United States are estimated. We focus on the open estuarine waters, excluding the fringing wetlands. We developed empirical models relating NEP to loading ratios of dissolved inorganic nitrogen to total organic carbon, and carbon burial in the sediment to estuarine water residence time and total nitrogen input across the landward boundary. Output from a data-constrained water quality model was used to estimate inputs of total nitrogen and organic carbon to the estuaries across the landward boundary, including fluvial and tidal-wetland sources. Organic carbon export from the estuaries to the continental shelf was computed by difference, assuming steady state. Uncertainties in the budget were estimated by allowing uncertainties in the supporting model relations. Collectively, U.S. East Coast estuaries are net heterotrophic, with the area-integrated NEP of -1.5 (-2.8, -1.0) Tg C yr (super -1) (best estimate and 95% confidence interval) and area-normalized NEP of -3.2 (-6.1, -2.3) mol C m (super -2) yr (super -1) . East Coast estuaries serve as a source of organic carbon to the shelf, exporting 3.4 (2.0, 4.3) Tg C yr (super -1) or 7.6 (4.4, 9.5) mol C m (super -2) yr (super -1) . Organic carbon inputs from fluvial and tidal-wetland sources for the region are estimated at 5.4 (4.6, 6.5) Tg C yr (super -1) or 12 (10, 14) mol C m (super -2) yr (super -1) and carbon burial in the open estuarine waters at 0.50 (0.33, 0.78) Tg C yr (super -1) or 1.1 (0.73, 1.7) mol C m (super -2) yr (super -1) . Our results highlight the importance of estuarine systems in the overall coastal budget of organic carbon, suggesting that in the aggregate, U.S. East Coast estuaries assimilate (via respiration and burial) approximately 40% of organic carbon inputs from fluvial and tidal-wetland sources and allow approximately 60% to be exported to the shelf. Abstract Copyright (2014), . American Geophysical Union. All Rights Reserved. JF - Global Biogeochemical Cycles AU - Herrmann, Maria AU - Najjar, Raymond G AU - Kemp, W Michael AU - Alexander, Richard B AU - Boyer, Elizabeth W AU - Cai, Wei-Jun AU - Griffith, Peter C AU - Kroeger, Kevin D AU - McCallister, S Leigh AU - Smith, Richard A Y1 - 2015/01// PY - 2015 DA - January 2015 SP - 96 EP - 111 PB - American Geophysical Union, Washington, DC VL - 29 IS - 1 SN - 0886-6236, 0886-6236 KW - United States KW - respiration KW - metabolism KW - ecosystems KW - Eastern U.S. KW - geochemical cycle KW - estuaries KW - biogenic processes KW - wetlands KW - mass balance KW - carbon KW - coastal environment KW - continental shelf KW - carbon cycle KW - organic carbon KW - chemosynthesis KW - productivity KW - 22:Environmental geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668232728?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Global+Biogeochemical+Cycles&rft.atitle=Net+ecosystem+production+and+organic+carbon+balance+of+U.+S.+East+Coast+estuaries%3B+a+synthesis+approach&rft.au=Herrmann%2C+Maria%3BNajjar%2C+Raymond+G%3BKemp%2C+W+Michael%3BAlexander%2C+Richard+B%3BBoyer%2C+Elizabeth+W%3BCai%2C+Wei-Jun%3BGriffith%2C+Peter+C%3BKroeger%2C+Kevin+D%3BMcCallister%2C+S+Leigh%3BSmith%2C+Richard+A&rft.aulast=Herrmann&rft.aufirst=Maria&rft.date=2015-01-01&rft.volume=29&rft.issue=1&rft.spage=96&rft.isbn=&rft.btitle=&rft.title=Global+Biogeochemical+Cycles&rft.issn=08866236&rft_id=info:doi/10.1002%2F2013GB004736 L2 - http://www.agu.org/journals/gb/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 81 N1 - PubXState - DC N1 - Document feature - illus. incl. 4 tables, sketch map N1 - Last updated - 2015-04-02 N1 - SubjectsTermNotLitGenreText - biogenic processes; carbon; carbon cycle; chemosynthesis; coastal environment; continental shelf; Eastern U.S.; ecosystems; estuaries; geochemical cycle; mass balance; metabolism; organic carbon; productivity; respiration; United States; wetlands DO - http://dx.doi.org/10.1002/2013GB004736 ER - TY - JOUR T1 - Evidence for explosive silicic volcanism on the Moon from the extended distribution of thorium near the Compton-Belkovich volcanic complex AN - 1668230787; 2015-032275 AB - We reconstruct the abundance of thorium near the Compton-Belkovich Volcanic Complex on the Moon, using data from the Lunar Prospector Gamma Ray Spectrometer. We enhance the resolution via a pixon image reconstruction technique and find that the thorium is distributed over a larger (40km X 75 km) area than the (25km X 35 km) high-albedo region normally associated with Compton-Belkovich. Our reconstructions show that inside this region, the thorium concentration is 14-26ppm. We also find additional thorium, spread up to 300km eastward of the complex at approximately 2 ppm. The thorium must have been deposited during the formation of the volcanic complex, because subsequent lateral transport mechanisms, such as small impacts, are unable to move sufficient material. The morphology of the feature is consistent with pyroclastic dispersal, and we conclude that the present distribution of thorium was likely created by the explosive eruption of silicic magma. Abstract Copyright (2014), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Wilson, J T AU - Eke, V R AU - Massey, R J AU - Elphic, R C AU - Jolliff, B L AU - Lawrence, D J AU - Llewellin, E W AU - McElwaine, J N AU - Teodoro, L F A Y1 - 2015/01// PY - 2015 DA - January 2015 SP - 92 EP - 108 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 120 IS - 1 SN - 2169-9097, 2169-9097 KW - albedo KW - volcanic rocks KW - Moon KW - numerical analysis KW - igneous rocks KW - Lunar Prospector Program KW - gamma-ray spectroscopy KW - felsic composition KW - explosive eruptions KW - spatial distribution KW - pyroclastics KW - volcanic features KW - volcanism KW - metals KW - magmas KW - Compton-Belkovich Complex KW - thorium KW - reconstruction KW - spectroscopy KW - actinides KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668230787?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Planets&rft.atitle=Evidence+for+explosive+silicic+volcanism+on+the+Moon+from+the+extended+distribution+of+thorium+near+the+Compton-Belkovich+volcanic+complex&rft.au=Wilson%2C+J+T%3BEke%2C+V+R%3BMassey%2C+R+J%3BElphic%2C+R+C%3BJolliff%2C+B+L%3BLawrence%2C+D+J%3BLlewellin%2C+E+W%3BMcElwaine%2C+J+N%3BTeodoro%2C+L+F+A&rft.aulast=Wilson&rft.aufirst=J&rft.date=2015-01-01&rft.volume=120&rft.issue=1&rft.spage=92&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2F2014JE004719 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9100 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 65 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2015-04-02 N1 - SubjectsTermNotLitGenreText - actinides; albedo; Compton-Belkovich Complex; explosive eruptions; felsic composition; gamma-ray spectroscopy; igneous rocks; Lunar Prospector Program; magmas; metals; Moon; numerical analysis; pyroclastics; reconstruction; spatial distribution; spectroscopy; thorium; volcanic features; volcanic rocks; volcanism DO - http://dx.doi.org/10.1002/2014JE004719 ER - TY - JOUR T1 - Topographic mapping of paterae and layered plains on Io using photoclinometry AN - 1668230726; 2015-032273 AB - We have generated regional scale photoclinometry digital elevation models (DEMs) from Voyager and Galileo imagery of Io that resolve small-scale topographic features including paterae and layered plains. Given the difficulty of applying this technique to Io due to its anomalous surface albedo properties, we have experimented extensively with the relevant procedures in order to generate what we consider to be the most reliable DEMs. The DEMs have been used to gauge the depths of 23 paterae and the heights of 12 layered plains outcrops, and we find the very similar relief and frequent close association of the two landforms to support the existence of a mixed silicate-volatile layer covering much of the surface of Io. Abstract Copyright (2014), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - White, Oliver L AU - Schenk, Paul M Y1 - 2015/01// PY - 2015 DA - January 2015 SP - 51 EP - 61 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 120 IS - 1 SN - 2169-9097, 2169-9097 KW - albedo KW - imagery KW - paterae KW - Voyager Program KW - Io Satellite KW - mapping KW - Galilean satellites KW - digital terrain models KW - topography KW - photoclinometry KW - surface features KW - plains KW - satellites KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668230726?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Planets&rft.atitle=Topographic+mapping+of+paterae+and+layered+plains+on+Io+using+photoclinometry&rft.au=White%2C+Oliver+L%3BSchenk%2C+Paul+M&rft.aulast=White&rft.aufirst=Oliver&rft.date=2015-01-01&rft.volume=120&rft.issue=1&rft.spage=51&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2F2014JE004672 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9100 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 24 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2015-04-02 N1 - SubjectsTermNotLitGenreText - albedo; digital terrain models; Galilean satellites; imagery; Io Satellite; mapping; paterae; photoclinometry; plains; remote sensing; satellites; surface features; topography; Voyager Program DO - http://dx.doi.org/10.1002/2014JE004672 ER - TY - JOUR T1 - Diagenesis and clay mineral formation at Gale Crater, Mars AN - 1668230632; 2015-032272 AB - The Mars Science Laboratory rover Curiosity found host rocks of basaltic composition and alteration assemblages containing clay minerals at Yellowknife Bay, Gale Crater. On the basis of the observed host rock and alteration minerals, we present results of equilibrium thermochemical modeling of the Sheepbed mudstones of Yellowknife Bay in order to constrain the formation conditions of its secondary mineral assemblage. Building on conclusions from sedimentary observations by the Mars Science Laboratory team, we assume diagenetic, in situ alteration. The modeling shows that the mineral assemblage formed by the reaction of a CO (sub 2) -poor and oxidizing, dilute aqueous solution (Gale Portage Water) in an open system with the Fe-rich basaltic-composition sedimentary rocks at 10-50 degrees C and water/rock ratio (mass of rock reacted with the starting fluid) of 100-1000, pH of approximately 7.5-12. Model alteration assemblages predominantly contain phyllosilicates (Fe-smectite, chlorite), the bulk composition of a mixture of which is close to that of saponite inferred from Chemistry and Mineralogy data and to that of saponite observed in the nakhlite Martian meteorites and terrestrial analogues. To match the observed clay mineral chemistry, inhomogeneous dissolution dominated by the amorphous phase and olivine is required. We therefore deduce a dissolving composition of approximately 70% amorphous material, with 20% olivine, and 10% whole rock component. Abstract Copyright (2014), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Bridges, J C AU - Schwenzer, S P AU - Leveille, R AU - Westall, F AU - Wiens, R C AU - Mangold, N AU - Bristow, T AU - Edwards, P AU - Berger, G Y1 - 2015/01// PY - 2015 DA - January 2015 SP - 1 EP - 19 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 120 IS - 1 SN - 2169-9097, 2169-9097 KW - silicates KW - clay KW - alteration KW - stony meteorites KW - Martian meteorites KW - olivine group KW - Mars KW - aqueous solutions KW - Gale Crater KW - carbon dioxide KW - meteorites KW - sedimentary rocks KW - olivine KW - sediments KW - orthosilicates KW - thermochemical properties KW - mineral assemblages KW - chlorite group KW - basaltic composition KW - Yellowknife Bay KW - mudstone KW - clastic sediments KW - amorphous materials KW - saponite KW - smectite KW - achondrites KW - clay minerals KW - terrestrial planets KW - nesosilicates KW - chlorite KW - planets KW - diagenesis KW - sheet silicates KW - clastic rocks KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668230632?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Planets&rft.atitle=Diagenesis+and+clay+mineral+formation+at+Gale+Crater%2C+Mars&rft.au=Bridges%2C+J+C%3BSchwenzer%2C+S+P%3BLeveille%2C+R%3BWestall%2C+F%3BWiens%2C+R+C%3BMangold%2C+N%3BBristow%2C+T%3BEdwards%2C+P%3BBerger%2C+G&rft.aulast=Bridges&rft.aufirst=J&rft.date=2015-01-01&rft.volume=120&rft.issue=1&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2F2014JE004757 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9100 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 59 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2015-04-02 N1 - SubjectsTermNotLitGenreText - achondrites; alteration; amorphous materials; aqueous solutions; basaltic composition; carbon dioxide; chlorite; chlorite group; clastic rocks; clastic sediments; clay; clay minerals; diagenesis; Gale Crater; Mars; Martian meteorites; meteorites; mineral assemblages; mudstone; nesosilicates; olivine; olivine group; orthosilicates; planets; saponite; sedimentary rocks; sediments; sheet silicates; silicates; smectite; stony meteorites; terrestrial planets; thermochemical properties; Yellowknife Bay DO - http://dx.doi.org/10.1002/2014JE004757 ER - TY - JOUR T1 - Replacement of olivine by serpentine in the Queen Alexandra Range 93005 carbonaceous chondrite (CM2); reactant-product compositional relations, and isovolumetric constraints on reaction stoichiometry and elemental mobility during aqueous alteration AN - 1668229223; 2015-029572 AB - Isovolumetric replacement of euhedral and anhedral olivine by serpentine produced both centripetal and meshwork textures in the CM2 chondrites ALH 81002 and Nogoya. The compositions of these textural varieties of serpentine are uniform within narrow limits within each previously studied meteorite, independent of the composition of olivine being replaced, and different between the two meteorites. In QUE 93005 (CM2), coarse olivines of widely varying compositions (Fo (sub <76-99) ) are replaced in a texturally similar manner by compositionally uniform serpentine (Mg (sub 0.73+ or -0.05) Fe (sub 0.27+ or -0.05) ) (sub 3) Si (sub 2) O (sub 5) (OH) (sub 4) . The narrow compositional range of serpentine replacing coarse olivine indicates that the aqueous solution from which the serpentine formed was compositionally uniform on scales at least as large as the meteorite ( approximately 2.5 cm in longest dimension). Isovolumetric textures and compositional observations constrain elemental redistribution from coarse olivine to serpentine and to surrounding phases during serpentinization. Regardless of olivine's composition, isovolumetric replacement of coarse olivines by serpentine of the observed composition released more Mg and Si from olivine than was required to form the serpentine. Excess Mg and Si released by olivine destruction and not retained in serpentine were exported from the replaced volume. Olivines with different Fa/Fo proportions contributed different amounts of Fe and Mg to the serpentine. Ferroan olivines released more Fe than required to form the serpentines replacing them, so some of the Fe released from ferroan olivine was exported from the replaced volumes. Forsteritic olivines released less Fe than required to form the serpentines replacing them, so some Fe was imported into the replaced volumes augmenting the small amount of Fe released from forsteritic olivine. In QUE 93005 Fo (sub 83.8) is the threshold composition between Fe-exporting and Fe-importing behavior in individual olivine-serpentine pairs, which released exactly the amount of Fe required to form serpentine of the observed uniform composition. Compositions of serpentines isovolumetrically replacing olivines, and threshold olivine compositions, in QUE 93005 differ from the corresponding values in Nogoya. Solvent and solute species diffused through the serpentine between the olivine-serpentine interface and the aqueous solution outside the isovolumetrically replaced volume. In QUE 93005, some of the Fe released from ferroan olivine in excess of the amount required to form serpentine reacted with S sourced from outside the pseudomorphs to form Fe-sulfide decorating the margins of the pseudomorphs of serpentine after fayalitic olivine. Such Fe-sulfide-decorated outlines after fayalitic olivine do not occur in ALH 81002 or Nogoya, indicating different Fe and S mass transfer regimes in different CM2 chondrites. Mg, Fe, Si, and S in the aqueous solution, including the excess Mg and Si exported from all serpentine pseudomorphs after olivine of any composition, were available to be incorporated into other phases spatially separate from the pseudomorphs after olivine, including regularly interstratified serpentine-tochilinite. Serpentines that replaced coarse olivines in QUE 93005 and ALH 81002 are less magnesian than those in Nogoya, indicating that the Nogoya aqueous-alteration environment was more evolved toward Mg-rich solutions. This easily located and characterized phase assemblage may be potentially useful for characterizing clasts of varying degrees of alteration in brecciated and heterogeneous CM chondrites, and future returned samples from mineralogically similar asteroids. Abstract Copyright (2015) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Velbel, Michael A AU - Tonui, Eric K AU - Zolensky, Michael E Y1 - 2015/01/01/ PY - 2015 DA - 2015 Jan 01 SP - 402 EP - 425 PB - Elsevier, New York, NY VL - 148 SN - 0016-7037, 0016-7037 KW - silicates KW - serpentine KW - stony meteorites KW - QUE 93005 KW - olivine group KW - metasomatism KW - ALHA 81002 KW - meteorites KW - mineral composition KW - chemical reactions KW - serpentine group KW - olivine KW - orthosilicates KW - spectra KW - mineral assemblages KW - chondrites KW - stoichiometry KW - textures KW - optical mineralogy KW - electron microscopy data KW - cosmochemistry KW - carbonaceous chondrites KW - X-ray spectra KW - TEM data KW - EDS spectra KW - nesosilicates KW - aqueous alteration KW - Allan Hills Meteorites KW - Antarctica KW - Queen Alexandra Range Meteorites KW - sheet silicates KW - mobilization KW - CM chondrites KW - SEM data KW - Nogoya Meteorite KW - 05B:Petrology of meteorites and tektites KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668229223?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geochimica+et+Cosmochimica+Acta&rft.atitle=Replacement+of+olivine+by+serpentine+in+the+Queen+Alexandra+Range+93005+carbonaceous+chondrite+%28CM2%29%3B+reactant-product+compositional+relations%2C+and+isovolumetric+constraints+on+reaction+stoichiometry+and+elemental+mobility+during+aqueous+alteration&rft.au=Velbel%2C+Michael+A%3BTonui%2C+Eric+K%3BZolensky%2C+Michael+E&rft.aulast=Velbel&rft.aufirst=Michael&rft.date=2015-01-01&rft.volume=148&rft.issue=&rft.spage=402&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2014.10.007 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2015-01-01 N1 - Number of references - 115 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2015-08-13 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - ALHA 81002; Allan Hills Meteorites; Antarctica; aqueous alteration; carbonaceous chondrites; chemical reactions; chondrites; CM chondrites; cosmochemistry; EDS spectra; electron microscopy data; metasomatism; meteorites; mineral assemblages; mineral composition; mobilization; nesosilicates; Nogoya Meteorite; olivine; olivine group; optical mineralogy; orthosilicates; QUE 93005; Queen Alexandra Range Meteorites; SEM data; serpentine; serpentine group; sheet silicates; silicates; spectra; stoichiometry; stony meteorites; TEM data; textures; X-ray spectra DO - http://dx.doi.org/10.1016/j.gca.2014.10.007 ER - TY - JOUR T1 - Assessing the magnitude of CO sub(2) flux uncertainty in atmospheric CO sub(2) records using products from NASA's Carbon Monitoring Flux Pilot Project AN - 1664202759; PQ0001193318 AB - NASA's Carbon Monitoring System Flux Pilot Project (FPP) was designed to better understand contemporary carbon fluxes by bringing together state-of-the art models with remote sensing data sets. Here we report on simulations using NASA's Goddard Earth Observing System Model, version 5 (GEOS-5) which was used to evaluate the consistency of two different sets of observationally informed land and ocean fluxes with atmospheric CO sub(2) records. Despite the observation inputs, the average difference in annual terrestrial biosphere flux between the two land (NASA Ames Carnegie-Ames-Stanford-Approach (CASA) and CASA-Global Fire Emissions Database version 3 (GFED)) models is 1.7 Pg C for 2009-2010. Ocean models (NASA's Ocean Biogeochemical Model (NOBM) and Estimating the Circulation and Climate of the Ocean Phase II (ECCO2)-Darwin) differ by 35% in their global estimates of carbon flux with particularly strong disagreement in high latitudes. Based upon combinations of terrestrial and ocean fluxes, GEOS-5 reasonably simulated the seasonal cycle observed at Northern Hemisphere surface sites and by the Greenhouse gases Observing SATellite (GOSAT) while the model struggled to simulate the seasonal cycle at Southern Hemisphere surface locations. Though GEOS-5 was able to reasonably reproduce the patterns of XCO sub(2) observed by GOSAT, it struggled to reproduce these aspects of Atmospheric Infrared Sounder observations. Despite large differences between land and ocean flux estimates, resulting differences in atmospheric mixing ratio were small, typically less than 5ppm at the surface and 3ppm in the XCO sub(2) column. A statistical analysis based on the variability of observations shows that flux differences of these magnitudes are difficult to distinguish from inherent measurement variability, regardless of the measurement platform. Key Points * Satellite informed fluxes are associated with large uncertainties * Flux differences are difficult to discern from natural atmospheric variability * Models continue to underestimate NH sinks JF - Journal of Geophysical Research: Atmospheres AU - Ott, Lesley E AU - Pawson, Steven AU - Collatz, George J AU - Gregg, Watson W AU - Menemenlis, Dimitris AU - Brix, Holger AU - Rousseaux, Cecile S AU - Bowman, Kevin W AU - Liu, Junjie AU - Eldering, Annmarie AU - Gunson, Michael R AU - Kawa, Stephan R AD - Global Modeling and Assimilation Office, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2015/01// PY - 2015 DA - January 2015 SP - 734 EP - 765 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 120 IS - 2 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Pollution Abstracts; Meteorological & Geoastrophysical Abstracts KW - Remote Sensing KW - Satellite design KW - Meteorological data KW - Variability KW - Atmospheric pollution models KW - Ocean models KW - Climate change KW - Remote sensing KW - Statistical analysis KW - Sinks KW - Biosphere KW - Sulfur dioxide KW - Carbon KW - Emissions KW - Latitude KW - Seasonal variations KW - Modelling KW - Marine KW - Satellite Technology KW - Fires KW - Climate models KW - Atmospheric variability KW - Biogeochemistry KW - Carbon cycle KW - Simulation KW - Ocean circulation KW - Atmospheric circulation KW - Greenhouse effect KW - Satellites KW - Atmospheric mixing KW - Numerical simulations KW - Oceans KW - Monitoring KW - Greenhouse gases KW - Carbon dioxide KW - Fluctuations KW - Carbon Dioxide KW - Q2 09243:Structure, mechanics and thermodynamics KW - P 0000:AIR POLLUTION KW - SW 0810:General KW - M2 551.46:General (551.46) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1664202759?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=Assessing+the+magnitude+of+CO+sub%282%29+flux+uncertainty+in+atmospheric+CO+sub%282%29+records+using+products+from+NASA%27s+Carbon+Monitoring+Flux+Pilot+Project&rft.au=Ott%2C+Lesley+E%3BPawson%2C+Steven%3BCollatz%2C+George+J%3BGregg%2C+Watson+W%3BMenemenlis%2C+Dimitris%3BBrix%2C+Holger%3BRousseaux%2C+Cecile+S%3BBowman%2C+Kevin+W%3BLiu%2C+Junjie%3BEldering%2C+Annmarie%3BGunson%2C+Michael+R%3BKawa%2C+Stephan+R&rft.aulast=Ott&rft.aufirst=Lesley&rft.date=2015-01-01&rft.volume=120&rft.issue=2&rft.spage=734&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2014JD022411 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-03-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Carbon; Biogeochemistry; Climate change; Carbon cycle; Ocean circulation; Greenhouse effect; Carbon dioxide; Seasonal variations; Modelling; Meteorological data; Fires; Satellite design; Climate models; Atmospheric pollution models; Atmospheric variability; Ocean models; Statistical analysis; Remote sensing; Atmospheric circulation; Biosphere; Atmospheric mixing; Numerical simulations; Greenhouse gases; Simulation; Satellites; Sulfur dioxide; Oceans; Emissions; Latitude; Remote Sensing; Satellite Technology; Variability; Sinks; Monitoring; Fluctuations; Carbon Dioxide; Marine DO - http://dx.doi.org/10.1002/2014JD022411 ER - TY - JOUR T1 - The quantity and quality of information in hydrologic models AN - 1664190774; PQ0001222581 AB - The role of models in science is to facilitate predictions from hypotheses. Although the idea that models provide information is widely reported and has been used as the basis for model evaluation, benchmarking, and updating strategies, this intuition has not been formally developed and current benchmarking strategies remain ad hoc at a fundamental level. Here we interpret what it means to say that a model provides information in the context of the formal inductive philosophy of science. We show how information theory can be used to measure the amount of information supplied by a model, and derive standard model benchmarking and evaluation activities in this context. We further demonstrate that, via a process of induction, dynamical models store information from hypotheses and observations about the systems that they represent, and that this stored information can be directly measured. Key Points: * Models provide information of variable quality * Information theory must be adapted to measure model info * Dynamic systems models store information via induction JF - Water Resources Research AU - Nearing, Grey S AU - Gupta, Hoshin V AD - NASA Goddard Space Flight Center, Hydrologic Sciences Lab, Greenbelt, Maryland, USA. Y1 - 2015/01// PY - 2015 DA - January 2015 SP - 524 EP - 538 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 51 IS - 1 SN - 0043-1397, 0043-1397 KW - Meteorological & Geoastrophysical Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Aqualine Abstracts KW - Prediction KW - Water resources KW - Information theory KW - Evaluation KW - Hydrologic Models KW - Standards KW - Water resources research KW - Hydrologic models KW - Modelling KW - M2 556:General (556) KW - AQ 00006:Sewage KW - SW 0810:General KW - Q2 09105:Research programmes and expeditions UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1664190774?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Water+Resources+Research&rft.atitle=The+quantity+and+quality+of+information+in+hydrologic+models&rft.au=Nearing%2C+Grey+S%3BGupta%2C+Hoshin+V&rft.aulast=Nearing&rft.aufirst=Grey&rft.date=2015-01-01&rft.volume=51&rft.issue=1&rft.spage=524&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1002%2F2014WR015895 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-03-01 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Water resources; Modelling; Water resources research; Information theory; Hydrologic models; Prediction; Evaluation; Hydrologic Models; Standards DO - http://dx.doi.org/10.1002/2014WR015895 ER - TY - JOUR T1 - An experimental study of the formation of cubanite (CuFe (sub 2) S (sub 3) ) in primitive meteorites AN - 1660629744; 2015-021740 AB - The low-temperature form of CuFe (sub 2) S (sub 3) , cubanite, has been identified in the CI chondrite and NASA Stardust mission collections. The presence of this mineral constrains the maximum temperature to 210 degrees C since the time of its formation. However, until now, the conditions under which cubanite forms were less well constrained. In order to refine the history of the time-varying, low-temperature fluids which existed on the CI-chondrite parent body and Comet 81P/Wild 2 (Wild 2), we synthesized cubanite. The experimental synthesis of this mineral was achieved, for the first time, under low-temperature aqueous conditions relevant to the CI-chondrite parent body. Using a variant of in situ hydrothermal recrystallization, cubanite formed in aqueous experiments starting with temperatures of 150 and 200 degrees C, pH approximately 9, and oxygen fugacities corresponding to the iron-magnetite buffer. The composition and structure of the cubanite were determined using electron microprobe and transmission electron microscopy techniques, respectively. The combined compositional, crystallographic, and experimental data allow us to place limits on the conditions under which the formation of cubanite is feasible, which in turn constrains the nature of the fluid phase on the CI-chondrite parent body and Wild 2 when cubanite was forming. Abstract Copyright The Meteoritical Society, 2014. JF - Meteoritics & Planetary Science AU - Berger, Eve L AU - Keller, Lindsay P AU - Lauretta, Dante S Y1 - 2015/01// PY - 2015 DA - January 2015 SP - 1 EP - 14 PB - Meteoritical Society, Fayetteville, AR VL - 50 IS - 1 SN - 1086-9379, 1086-9379 KW - stony meteorites KW - oxygen KW - electron diffraction data KW - microstructure KW - stability KW - recrystallization KW - fugacity KW - temperature KW - electron probe data KW - meteorites KW - phase equilibria KW - Wild 2 Comet KW - synthesis KW - chondrites KW - troilite KW - pH KW - CI chondrites KW - experimental studies KW - Stardust Mission KW - parent bodies KW - oxidation KW - carbonaceous chondrites KW - cubanite KW - TEM data KW - hydrothermal conditions KW - comets KW - low temperature KW - crystallography KW - sulfides KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660629744?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=An+experimental+study+of+the+formation+of+cubanite+%28CuFe+%28sub+2%29+S+%28sub+3%29+%29+in+primitive+meteorites&rft.au=Berger%2C+Eve+L%3BKeller%2C+Lindsay+P%3BLauretta%2C+Dante+S&rft.aulast=Berger&rft.aufirst=Eve&rft.date=2015-01-01&rft.volume=50&rft.issue=1&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12399 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 56 N1 - PubXState - AR N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2015-03-05 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - carbonaceous chondrites; chondrites; CI chondrites; comets; crystallography; cubanite; electron diffraction data; electron probe data; experimental studies; fugacity; hydrothermal conditions; low temperature; meteorites; microstructure; oxidation; oxygen; parent bodies; pH; phase equilibria; recrystallization; stability; Stardust Mission; stony meteorites; sulfides; synthesis; TEM data; temperature; troilite; Wild 2 Comet DO - http://dx.doi.org/10.1111/maps.12399 ER - TY - JOUR T1 - A Method for Retrieving the Ground Flash Fraction and Flash Type from Satellite Lightning Mapper Observations AN - 1660413964; PQ0001092622 AB - An analytic perturbation method is introduced for retrieving the lightning ground flash fraction in a set of N lightning flashes observed by a satellite lightning mapper. The value of N must be large, typically in the thousands, and the satellite lightning optical observations consist of the maximum group area (MGA) produced by each flash. Moreover, the method subsequently determines the flash type (ground or cloud) of each of the N flashes. Performance tests of the method were conducted using simulated observations that were based on Optical Transient Detector (OTD) and Lightning Imaging Sensor (LIS) data. It is found that the mean ground flash fraction retrieval errors are below 0.04 across the full range 0-1 under the nominal conditions defined. In general, it is demonstrated that the retrieval errors depend on many factors (i.e., the number N of satellite observations, the magnitude of random and systematic instrument measurement errors, the ground flash fraction itself, and the number of samples used to form certain climate distributions employed in the method). The fraction of flashes accurately flash typed by the method averaged better than 78%. Overall, the accuracy of ground flash fraction and flash-typing retrievals degrade as the simulated population ground and cloud flash MGA distributions become more identical. Finally, because the analytic perturbation method was found to be quite robust (i.e., it performed well for several arbitrary underlying MGA distributions), it is not restricted to the lightning problem studied here but can be applied to any inverse problem having a similar problem statement. JF - Journal of Atmospheric and Oceanic Technology AU - Koshak, William J AU - Solakiewicz, Richard J AD - NASA Marshall Space Flight Center, Huntsville, Alabama Y1 - 2015/01// PY - 2015 DA - January 2015 SP - 79 EP - 96 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 32 IS - 1 SN - 0739-0572, 0739-0572 KW - Meteorological & Geoastrophysical Abstracts; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Environment Abstracts KW - Lightning KW - Thunderstorms KW - Inverse methods KW - Marine KW - Lightning flashes KW - Sensors KW - Climate KW - Remote sensing KW - Satellites KW - Imaging techniques KW - Methodology KW - Clouds KW - Satellite sensing KW - Satellite data KW - Optical observations KW - Ocean-atmosphere system KW - Perturbation method KW - Mapping KW - Q2 09243:Structure, mechanics and thermodynamics KW - M2 551.576:Clouds (551.576) KW - O 6020:Offshore Engineering and Operations KW - ENA 01:Air Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660413964?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Atmospheric+and+Oceanic+Technology&rft.atitle=A+Method+for+Retrieving+the+Ground+Flash+Fraction+and+Flash+Type+from+Satellite+Lightning+Mapper+Observations&rft.au=Koshak%2C+William+J%3BSolakiewicz%2C+Richard+J&rft.aulast=Koshak&rft.aufirst=William&rft.date=2015-01-01&rft.volume=32&rft.issue=1&rft.spage=79&rft.isbn=&rft.btitle=&rft.title=Journal+of+Atmospheric+and+Oceanic+Technology&rft.issn=07390572&rft_id=info:doi/10.1175%2FJTECH-D-14-00085.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-03-01 N1 - Number of references - 13 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Satellite sensing; Sensors; Lightning; Climate; Ocean-atmosphere system; Remote sensing; Perturbation method; Imaging techniques; Methodology; Clouds; Satellite data; Lightning flashes; Optical observations; Mapping; Satellites; Marine DO - http://dx.doi.org/10.1175/JTECH-D-14-00085.1 ER - TY - JOUR T1 - Modeling atmospheric longwave radiation at the surface during overcast skies: The role of cloud base height AN - 1660402233; PQ0001007720 AB - The behavior of the atmospheric downward longwave radiation at the surface under overcast conditions is studied. For optically thick clouds, longwave radiation depends greatly on the cloud base height (CBH), besides temperature and water vapor profiles. The CBH determines the cloud emission temperature and the air layers contributing to the longwave radiation that reaches the surface. Overcast situations observed at Girona (NE Iberian Peninsula) were studied by using a radiative transfer model. The data set includes different seasons, and a large range of CBH (0-5000m). The atmosphere profiles were taken from the European Center for Medium-Range Weather Forecast analysis. The CBH was determined from ceilometer measurements and also estimated by using a suitable method applied to the vertical profile of relative humidity. The agreement between calculations and pyrgeometer measurements is remarkably good (1.6 plus or minus 6.2 Wm super(-2)) if the observed CBH is used; poorer results are obtained with the estimated CBH (4.3 plus or minus 7.0 Wm super(-2)). These results are better than those obtained from a simple parameterization based upon ground-level data (1.1 plus or minus 11.6 Wm super(-2)), which can be corrected by adding a term that takes into account the CBH (-0.1 plus or minus 7.3 Wm super(-2)). At this site, the cloud radiative effect (CRE) at the surface lies in the range 50-80 Wm super(-2), has a clear seasonal behavior (higher CRE in winter), and depends upon the CBH. For the cold and the warm seasons, CRE decreases with CBH at a rate of -5 and -4 Wm super(-2)/km, respectively. Results obtained for other climates (subarctic and tropical) are also presented. Key Points * Comparison of several methods to estimate LW under cloudy skies is presented * Using synthetic profiles, estimated CBH, LW is approached within 7 Wm super(-2) (1 SD) * CRE at the surface decreases with CBH at 4-5 Wm super(-2)/km in a midlatitude site JF - Journal of Geophysical Research: Atmospheres AU - Viudez-Mora, A AU - Costa-Suros, M AU - Calbo, J AU - Gonzalez, JA AD - NASA Langley Research Center, Science Mission Directorate, Hampton, Virginia, USA. Y1 - 2015/01// PY - 2015 DA - January 2015 SP - 199 EP - 214 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 120 IS - 1 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Relative humidity KW - Water Vapor KW - Ceilometers KW - Atmosphere KW - Relative Humidity KW - Water vapor profiles KW - Europe, Iberian Peninsula KW - Radiation KW - Seasonal variability KW - Weather forecasting KW - Modelling KW - Weather KW - Spain, Cataluna, Girona KW - Climates KW - Pyrgeometers KW - ANE, Europe, Iberian Peninsula KW - Temperature KW - Warm seasons KW - Methodology KW - Vertical profiles KW - Clouds KW - Radiative transfer models KW - Long-wave radiation KW - Radiative transfer KW - Q2 09243:Structure, mechanics and thermodynamics KW - SW 0810:General KW - M2 551.509.1/.5:Forecasting (551.509.1/.5) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660402233?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=Modeling+atmospheric+longwave+radiation+at+the+surface+during+overcast+skies%3A+The+role+of+cloud+base+height&rft.au=Viudez-Mora%2C+A%3BCosta-Suros%2C+M%3BCalbo%2C+J%3BGonzalez%2C+JA&rft.aulast=Viudez-Mora&rft.aufirst=A&rft.date=2015-01-01&rft.volume=120&rft.issue=1&rft.spage=199&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2014JD022310 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-03-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Relative humidity; Clouds; Radiation; Radiative transfer; Weather forecasting; Vertical profiles; Modelling; Methodology; Radiative transfer models; Ceilometers; Pyrgeometers; Long-wave radiation; Warm seasons; Seasonal variability; Water vapor profiles; Weather; Water Vapor; Climates; Temperature; Atmosphere; Relative Humidity; Spain, Cataluna, Girona; Europe, Iberian Peninsula; ANE, Europe, Iberian Peninsula DO - http://dx.doi.org/10.1002/2014JD022310 ER - TY - JOUR T1 - NASA land cover and land use change (LCLUC): an interdisciplinary research program AN - 1660031331; 4649363 AB - Understanding Land Cover/Land Use Change (LCLUC) in diverse regions of the world and at varied spatial scales is one of the important challenges in global change research. In this article, we provide a brief overview of the NASA LCLUC program, its focus areas, and the importance of satellite remote sensing observations in LCLUC research including future directions. The LCLUC Program was designed to be a cross-cutting theme within NASA's Earth Science program. The program aims to develop and use remote sensing technologies to improve understanding of human interactions with the environment. Since 1997, the NASA LCLUC program has supported nearly 280 research projects on diverse topics such as forest loss and carbon, urban expansion, land abandonment, wetland loss, agricultural land use change and land use change in mountain systems. The NASA LCLUC program emphasizes studies where land-use changes are rapid or where there are significant regional or global LCLUC implications. Over a period of years, the LCLUC program has contributed to large regional science programs such as Land Biosphere-Atmosphere (LBA), the Northern Eurasia Earth Science Partnership Initiative (NEESPI), and the Monsoon Area Integrated Regional Study (MAIRS). The primary emphasis of the program will remain on using remote sensing datasets for LCLUC research. The program will continue to emphasize integration of physical and social sciences to address regional to global scale issues of LCLUC for the benefit of society. All rights reserved, Elsevier JF - Journal of environmental management AU - Vadrevu, Krishna Prasad AU - Justice, Chris AU - Gutman, Garik AD - University of Maryland ; National Aeronautics and Space Administration Y1 - 2015/01// PY - 2015 DA - Jan 2015 SP - 4 EP - 9 VL - 148 SN - 0301-4797, 0301-4797 KW - Economics KW - Research programmes KW - NASA KW - Environmental management KW - Land use UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660031331?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aibss&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+environmental+management&rft.atitle=NASA+land+cover+and+land+use+change+%28LCLUC%29%3A+an+interdisciplinary+research+program&rft.au=Vadrevu%2C+Krishna+Prasad%3BJustice%2C+Chris%3BGutman%2C+Garik&rft.aulast=Vadrevu&rft.aufirst=Krishna&rft.date=2015-01-01&rft.volume=148&rft.issue=&rft.spage=4&rft.isbn=&rft.btitle=&rft.title=Journal+of+environmental+management&rft.issn=03014797&rft_id=info:doi/10.1016%2Fj.jenvman.2014.12.004 LA - English DB - International Bibliography of the Social Sciences (IBSS) N1 - Date revised - 2015-03-02 N1 - Last updated - 2015-03-03 N1 - SubjectsTermNotLitGenreText - 4330 7625; 10924 10920 11332 3172 10472; 8452 956 10727 9030; 7217 7201 4025 DO - http://dx.doi.org/10.1016/j.jenvman.2014.12.004 ER - TY - JOUR T1 - MODIS Terra Collection 6 fractional snow cover validation in mountainous terrain during spring snowmelt using Landsat TM and ETM+ AN - 1647020856; 21213673 AB - Daily swath MODIS Terra Collection 6 fractional snow cover (MOD10_L2) estimates were validated with two-day Landsat TM/ETM+snow-covered area estimates across central Idaho and southwestern Montana, USA. Snow cover maps during spring snowmelt for 2000, 2001, 2002, 2003, 2005, 2007, and 2009 were compared between MODIS Terra and Landsat TM/ETM+using least-squared regression. Strong spatial and temporal map agreement was found between MODIS Terra fractional snow cover and Landsat TM/ETM+snow-covered area, although map disagreement was observed for two validation dates. High-altitude cirrus cloud contamination during low snow conditions as well as late season transient snowfall resulted in map disagreement. MODIS Terra's spatial resolution limits retrieval of thin-patchy snow cover, especially during partially cloudy conditions. Landsat's image acquisition frequency can introduce difficulty when discriminating between transient and resident mountain snow cover. Furthermore, transient snowfall later in the snowmelt season, which is a stochastic accumulation event that does not usually persist beyond the daily timescale, will skew decadal snow-covered area variability if bi-monthly climate data record development is the objective. As a quality control step, ground-based daily snow telemetry snow-water-equivalent measurements can be used to verify transient snowfall events. Users of daily MODIS Terra fractional snow products should be aware that local solar illumination and sensor viewing geometry might influence fractional snow cover estimation in mountainous terrain. Cross-sensor interoperability has been confirmed between MODIS Terra and Landsat TM/ETM+when mapping snow from the visible/infrared spectrum. This relationship is strong and supports operational multi-sensor snow cover mapping, specifically climate data record development to expand cryosphere, climate, and hydrological science applications. Copyright copyright 2013 John Wiley & Sons, Ltd. JF - Hydrological Processes AU - Crawford, Christopher J AD - Cryospheric Sciences Laboratory (Code 615), NASA Goddard Space Flight Center, Greenbelt, MD, 20771, USA. Y1 - 2015/01// PY - 2015 DA - January 2015 SP - 128 EP - 138 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 29 IS - 1 SN - 0885-6087, 0885-6087 KW - Pollution Abstracts; Environment Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts KW - Remote Sensing KW - Variability KW - Contamination KW - Sensors KW - Climate change KW - Snow Cover KW - Spring KW - Maps KW - Mountains KW - Cryosphere KW - Telemetry KW - Mapping KW - USA, Montana KW - Pollution detection KW - Snow KW - Climates KW - Clouds KW - USA, Idaho KW - Landsat KW - Quality control KW - Snowmelt KW - P 9999:GENERAL POLLUTION KW - AQ 00006:Sewage KW - SW 5040:Data acquisition KW - Q2 09161:General KW - ENA 02:Toxicology & Environmental Safety UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1647020856?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrological+Processes&rft.atitle=MODIS+Terra+Collection+6+fractional+snow+cover+validation+in+mountainous+terrain+during+spring+snowmelt+using+Landsat+TM+and+ETM%2B&rft.au=Crawford%2C+Christopher+J&rft.aulast=Crawford&rft.aufirst=Christopher&rft.date=2015-01-01&rft.volume=29&rft.issue=1&rft.spage=128&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.10134 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-01-01 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Cryosphere; Pollution detection; Sensors; Contamination; Snow; Quality control; Telemetry; Climate change; Spring; Clouds; Mountains; Landsat; Snowmelt; Mapping; Remote Sensing; Variability; Climates; Snow Cover; Maps; USA, Idaho; USA, Montana DO - http://dx.doi.org/10.1002/hyp.10134 ER - TY - JOUR T1 - Climate forcing datasets for agricultural modeling: Merged products for gap-filling and historical climate series estimation AN - 1647006133; 21287024 AB - The AgMERRA and AgCFSR climate forcing datasets provide daily, high-resolution, continuous, meteorological series over the 1980-2010 period designed for applications examining the agricultural impacts of climate variability and climate change. These datasets combine daily resolution data from retrospective analyses (the Modern-Era Retrospective Analysis for Research and Applications, MERRA, and the Climate Forecast System Reanalysis, CFSR) with in situ and remotely-sensed observational datasets for temperature, precipitation, and solar radiation, leading to substantial reductions in bias in comparison to a network of 2324 agricultural-region stations from the Hadley Integrated Surface Dataset (HadISD). Results compare favorably against the original reanalyses as well as the leading climate forcing datasets (Princeton, WFD, WFD-EI, and GRASP), and AgMERRA distinguishes itself with substantially improved representation of daily precipitation distributions and extreme events owing to its use of the MERRA-Land dataset. These datasets also peg relative humidity to the maximum temperature time of day, allowing for more accurate representation of the diurnal cycle of near-surface moisture in agricultural models. AgMERRA and AgCFSR enable a number of ongoing investigations in the Agricultural Model Intercomparison and Improvement Project (AgMIP) and related research networks, and may be used to fill gaps in historical observations as well as a basis for the generation of future climate scenarios. JF - Agricultural and Forest Meteorology AU - Ruane, Alex C AU - Goldberg, Richard AU - Chryssanthacopoulos, James AD - NASA Goddard Institute for Space Studies, New York, NY, United States Y1 - 2015/01// PY - 2015 DA - January 2015 SP - 233 EP - 248 PB - Elsevier B.V., The Boulevard Kidlington Oxford OX5 1GB United Kingdom VL - 200 SN - 0168-1923, 0168-1923 KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Sustainability Science Abstracts KW - Climate forcing data KW - Daily climate series KW - Climate change KW - AgMIP KW - Climate impacts KW - Agriculture KW - Relative humidity KW - Historical account KW - Variability KW - Rainfall KW - Forests KW - Solar radiation KW - Data reanalysis KW - Relative Humidity KW - Maximum temperatures KW - Climatic variability KW - Meteorology KW - Climatology KW - Daily precipitation KW - Hydrologic Data KW - Solar Radiation KW - Diurnal variations KW - Climate models KW - Climates KW - Temperature KW - Humidity KW - Precipitation KW - Future climates KW - M2 551.583:Variations (551.583) KW - SW 0810:General KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1647006133?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Agricultural+and+Forest+Meteorology&rft.atitle=Climate+forcing+datasets+for+agricultural+modeling%3A+Merged+products+for+gap-filling+and+historical+climate+series+estimation&rft.au=Ruane%2C+Alex+C%3BGoldberg%2C+Richard%3BChryssanthacopoulos%2C+James&rft.aulast=Ruane&rft.aufirst=Alex&rft.date=2015-01-01&rft.volume=200&rft.issue=&rft.spage=233&rft.isbn=&rft.btitle=&rft.title=Agricultural+and+Forest+Meteorology&rft.issn=01681923&rft_id=info:doi/10.1016%2Fj.agrformet.2014.09.016 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-01-01 N1 - Last updated - 2016-11-09 N1 - SubjectsTermNotLitGenreText - Relative humidity; Maximum temperatures; Climate models; Climatic variability; Climate change; Climatology; Precipitation; Daily precipitation; Solar radiation; Data reanalysis; Future climates; Diurnal variations; Historical account; Rainfall; Temperature; Forests; Humidity; Meteorology; Solar Radiation; Variability; Climates; Hydrologic Data; Relative Humidity DO - http://dx.doi.org/10.1016/j.agrformet.2014.09.016 ER - TY - JOUR T1 - Origin of the lunar highlands Mg-suite; an integrated petrology, geochemistry, chronology, and remote sensing perspective AN - 1645574961; 2015-007721 AB - The Mg-suite represents an enigmatic episode of lunar highlands magmatism that presumably represents the first stage of crustal building following primordial differentiation. This review examines the mineralogy, geochemistry, petrology, chronology, and the planetary-scale distribution of this suite of highlands plutonic rocks, presents models for their origin, examines petrogenetic relationships to other highlands rocks, and explores the link between this style of magmatism and early stages of lunar differentiation. Of the models considered for the origin of the parent magmas for the Mg-suite, the data best fit a process in which hot (solidus temperature at > or =2 GPa = 1600 to 1800 degrees C) and less dense (rho approximately 3100 kg/m (super 3) ) early lunar magma ocean cumulates rise to the base of the crust during cumulate pile overturn. Some decompressional melting would occur, but placing a hot cumulate horizon adjacent to the plagioclase-rich primordial crust and KREEP-rich lithologies (at temperatures of <1300 degrees C) would result in the hybridization of these divergent primordial lithologies, producing Mg-suite parent magmas. As urKREEP (primeval KREEP) is not the "petrologic driver" of this style of magmatism, outside of the Procellarum KREEP Terrane (PKT), Mg-suite magmas are not required to have a KREEP signature. Evaluation of the chronology of this episode of highlands evolution indicates that Mg-suite magmatism was initiated soon after primordial differentiation (<10 m.y.). Alternatively, the thermal event associated with the mantle overturn may have disrupted the chronometers utilized to date the primordial crust. Petrogenetic relationships between the Mg-suite and other highlands suites (e.g., alkali-suite and magnesian anorthositic granulites) are consistent with both fractional crystallization processes and melting of distinctly different hybrid sources. JF - American Mineralogist AU - Shearer, Charles K AU - Elardo, Stephen M AU - Petro, Noah E AU - Borg, Lars E AU - McCubbin, Francis M Y1 - 2015/01// PY - 2015 DA - January 2015 SP - 294 EP - 325 PB - Mineralogical Society of America, Washington, DC VL - 100 IS - 1 SN - 0003-004X, 0003-004X KW - silicates KW - magmatic differentiation KW - magnesium KW - igneous rocks KW - olivine group KW - Apollo Program KW - lunar highlands KW - granulites KW - pyroxene group KW - plutonic rocks KW - mineral composition KW - chronology KW - cumulates KW - olivine KW - metamorphic rocks KW - orthosilicates KW - framework silicates KW - rare earths KW - mineral assemblages KW - norite KW - chemical composition KW - geochemistry KW - chain silicates KW - alkaline earth metals KW - plagioclase KW - magma oceans KW - petrology KW - Moon KW - magmatism KW - Oceanus Procellarum KW - intergrowths KW - anorthosite KW - nesosilicates KW - lunar samples KW - KREEP KW - troctolite KW - metals KW - magmas KW - gabbros KW - fractional crystallization KW - sulfides KW - feldspar group KW - crust KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1645574961?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Mineralogist&rft.atitle=Origin+of+the+lunar+highlands+Mg-suite%3B+an+integrated+petrology%2C+geochemistry%2C+chronology%2C+and+remote+sensing+perspective&rft.au=Shearer%2C+Charles+K%3BElardo%2C+Stephen+M%3BPetro%2C+Noah+E%3BBorg%2C+Lars+E%3BMcCubbin%2C+Francis+M&rft.aulast=Shearer&rft.aufirst=Charles&rft.date=2015-01-01&rft.volume=100&rft.issue=1&rft.spage=294&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam-2015-4817 L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 263 N1 - PubXState - DC N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2015-01-15 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - alkaline earth metals; anorthosite; Apollo Program; chain silicates; chemical composition; chronology; crust; cumulates; feldspar group; fractional crystallization; framework silicates; gabbros; geochemistry; granulites; igneous rocks; intergrowths; KREEP; lunar highlands; lunar samples; magma oceans; magmas; magmatic differentiation; magmatism; magnesium; metals; metamorphic rocks; mineral assemblages; mineral composition; Moon; nesosilicates; norite; Oceanus Procellarum; olivine; olivine group; orthosilicates; petrology; plagioclase; plutonic rocks; pyroxene group; rare earths; remote sensing; silicates; sulfides; troctolite DO - http://dx.doi.org/10.2138/am-2015-4817 ER - TY - NEWS T1 - NASA Glenn Research Center Completes Stirling Generator AN - 1641160964 JF - UPI Space Daily AU - Katherine K. Martin for Glenn Research Center Y1 - 2015/01/01/ PY - 2015 DA - 2015 Jan 01 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641160964?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=NASA+Glenn+Research+Center+Completes+Stirling+Generator&rft.au=Katherine+K.+Martin+for+Glenn+Research+Center&rft.aulast=Katherine+K.+Martin+for+Glenn+Research+Center&rft.aufirst=&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2015-01-01 ER - TY - JOUR T1 - DNA aptamers against the Cry j 2 allergen of Japanese cedar pollen for biosensing applications AN - 1635036301; 21048050 AB - Sensing pollen allergens is required to prevent allergic disorders such as pollinosis. Aptamers, which bind to specific molecules, offer great potential as useful tools for detecting pollen allergens as measures against allergic disorders. Here, we report the identification of DNA aptamers binding to Cry j 2, one of the major allergens in Japanese cedar pollen, and the histochemical sensing of Cry j 2 in ruptured Japanese cedar pollen. DNA aptamers were selected by systematic evolution of ligands by exponential enrichment (SELEX) using nitrocellulose membranes. Through four rounds of SELEX, we identified aptamers binding to Cry j 2. The aptamers generated staining in ruptured Japanese cedar pollen on glass slides without extraction, similar to anti-Cry j 2 antibodies. The staining was compatible with starch localization, in which Cry j 2 is present. An aptamer, CJ2-06, which had high and specific binding ability to Cry j 2 (K d=24nM), detected an amount of Cry j 2 equivalent to that in several tens of micrograms of pollen. Cry j 2 contained in house dust was detected in a spike test. The aptamers identified in this study can be powerful tools for allergen recognition in the practical biosensing of Cry j 2, leading to preventive measures against allergic disorders caused by Japanese cedar pollen. JF - Biosensors and Bioelectronics AU - Ogihara, Kazumasa AU - Savory, Nasa AU - Abe, Koichi AU - Yoshida, Wataru AU - Asahi, Masahiko AU - Kamohara, Seika AU - Ikebukuro, Kazunori AD - Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan Y1 - 2015/01// PY - 2015 DA - Jan 2015 SP - 159 EP - 165 PB - Elsevier B.V., 660 White Plains Rd. Tarrytown NY 10591-5153 United States VL - 63 SN - 0956-5663, 0956-5663 KW - Immunology Abstracts; Biochemistry Abstracts 2: Nucleic Acids; Biotechnology and Bioengineering Abstracts KW - Aptamer KW - Cry j 2 KW - Cryptomeria japonica KW - Japanese cedar pollen KW - Pollinosis KW - Aptamers KW - Biosensors KW - Antibodies KW - Pyroxylin KW - House dust KW - Allergens KW - Starch KW - pollinosis KW - Pollen KW - Evolution KW - F 06900:Methods KW - W 30955:Biosensors KW - N 14810:Methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1635036301?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Abiotechresearch&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biosensors+and+Bioelectronics&rft.atitle=DNA+aptamers+against+the+Cry+j+2+allergen+of+Japanese+cedar+pollen+for+biosensing+applications&rft.au=Ogihara%2C+Kazumasa%3BSavory%2C+Nasa%3BAbe%2C+Koichi%3BYoshida%2C+Wataru%3BAsahi%2C+Masahiko%3BKamohara%2C+Seika%3BIkebukuro%2C+Kazunori&rft.aulast=Ogihara&rft.aufirst=Kazumasa&rft.date=2015-01-01&rft.volume=63&rft.issue=&rft.spage=159&rft.isbn=&rft.btitle=&rft.title=Biosensors+and+Bioelectronics&rft.issn=09565663&rft_id=info:doi/10.1016%2Fj.bios.2014.07.030 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-12-01 N1 - Last updated - 2015-11-16 N1 - SubjectsTermNotLitGenreText - Biosensors; Aptamers; Pyroxylin; Antibodies; House dust; Allergens; Starch; pollinosis; Evolution; Pollen; Cryptomeria japonica DO - http://dx.doi.org/10.1016/j.bios.2014.07.030 ER -