TY - JOUR T1 - Comparison of nickel XANES spectra and elemental maps from a ureilite, a LL3.8 ordinary chondrite, two carbonaceous chondrites and two large cluster IDPs AN - 1855316216; 2017-001516 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Wirick, S AU - Flynn, G J AU - Sutton, S AU - Zolensky, M E AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1940 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - ordinary chondrites KW - stony meteorites KW - LL chondrites KW - carbonaceous chondrites KW - ureilite KW - CV chondrites KW - achondrites KW - X-ray spectra KW - Allende Meteorite KW - XANES spectra KW - meteorites KW - ALH 84086 KW - Allan Hills Meteorites KW - Antarctica KW - sampling KW - metals KW - nickel KW - spectra KW - chondrites KW - geochemistry KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1855316216?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Comparison+of+nickel+XANES+spectra+and+elemental+maps+from+a+ureilite%2C+a+LL3.8+ordinary+chondrite%2C+two+carbonaceous+chondrites+and+two+large+cluster+IDPs&rft.au=Wirick%2C+S%3BFlynn%2C+G+J%3BSutton%2C+S%3BZolensky%2C+M+E%3BAnonymous&rft.aulast=Wirick&rft.aufirst=S&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1940.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. N1 - Last updated - 2017-01-05 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; ALH 84086; Allan Hills Meteorites; Allende Meteorite; Antarctica; carbonaceous chondrites; chondrites; CV chondrites; geochemistry; LL chondrites; metals; meteorites; nickel; ordinary chondrites; sampling; spectra; stony meteorites; ureilite; X-ray spectra; XANES spectra ER - TY - JOUR T1 - Evidence for multiple stages of extensive low outflow channel floor resurfacing in southern circum-Chryse, Mars AN - 1855316136; 2017-001563 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Rodriguez, J Alexis P AU - Gulick, V AU - Baker, V AU - Platz, T AU - Fairen, A G AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2917 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Valles Marineris KW - THEMIS KW - mantle KW - channels KW - Mars KW - terrestrial planets KW - morphology KW - planets KW - volatiles KW - topography KW - MOLA KW - geomorphology KW - discharge KW - Chryse Planitia KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1855316136?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+multiple+stages+of+extensive+low+outflow+channel+floor+resurfacing+in+southern+circum-Chryse%2C+Mars&rft.au=Rodriguez%2C+J+Alexis+P%3BGulick%2C+V%3BBaker%2C+V%3BPlatz%2C+T%3BFairen%2C+A+G%3BAnonymous&rft.aulast=Rodriguez&rft.aufirst=J+Alexis&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2917.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 19 N1 - PubXState - TX N1 - Document feature - illus. N1 - Last updated - 2017-01-05 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - channels; Chryse Planitia; discharge; geomorphology; mantle; Mars; MOLA; morphology; planets; terrestrial planets; THEMIS; topography; Valles Marineris; volatiles ER - TY - JOUR T1 - Paleoenvironmental reconstruction of potential maar-diatreme system in the Siberian Traps AN - 1815669445; 2016-073935 JF - Abstract Volume - International MAAR Conference AU - Fristad, Kirsten AU - Svensen, Henrik AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 96 EP - 97 PB - Geoscience Society of New Zealand, Lower Hutt VL - 5 KW - volcanic rocks KW - igneous rocks KW - Russian Federation KW - diatremes KW - paleoecology KW - Tunguska Basin KW - volcanic features KW - Siberia KW - Commonwealth of Independent States KW - volcanism KW - Asia KW - degassing KW - lava flows KW - Paleozoic KW - landform evolution KW - Permian KW - volcanic fields KW - Siberian Traps KW - pyroclastics KW - Upper Permian KW - Maihen River KW - intrusions KW - paleoenvironment KW - maars KW - reconstruction KW - mass extinctions KW - geomorphology KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815669445?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstract+Volume+-+International+MAAR+Conference&rft.atitle=Paleoenvironmental+reconstruction+of+potential+maar-diatreme+system+in+the+Siberian+Traps&rft.au=Fristad%2C+Kirsten%3BSvensen%2C+Henrik%3BAnonymous&rft.aulast=Fristad&rft.aufirst=Kirsten&rft.date=2014-01-01&rft.volume=5&rft.issue=&rft.spage=96&rft.isbn=&rft.btitle=&rft.title=Abstract+Volume+-+International+MAAR+Conference&rft.issn=&rft_id=info:doi/ L2 - http://maar2014.geociencias.unam.mx/sites/default/files/session01.zip LA - English DB - GeoRef N1 - Conference title - 5th international MAAR conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 6 N1 - Document feature - geol. sketch maps N1 - Last updated - 2016-09-01 N1 - CODEN - #07931 N1 - SubjectsTermNotLitGenreText - Asia; Commonwealth of Independent States; degassing; diatremes; geomorphology; igneous rocks; intrusions; landform evolution; lava flows; maars; Maihen River; mass extinctions; paleoecology; paleoenvironment; Paleozoic; Permian; pyroclastics; reconstruction; Russian Federation; Siberia; Siberian Traps; Tunguska Basin; Upper Permian; volcanic features; volcanic fields; volcanic rocks; volcanism ER - TY - JOUR T1 - C-XANES analyses of carbonaceous solid inclusions from Monahans halite AN - 1793205832; 2016-048413 AB - Monahans meteorite (H5) contains fluid inclusion-bearing halite (NaCl) crystals [1]. Microthermometry and Raman spectroscopy showed that the fluid in the inclusions is an aqueous brine and they were trapped near 25 degrees C [1]. Their continued presence in the halite grains requires that their incorporation into the H chondrite asteroid was post metamorphism [2]. Abundant solid inclusions are also present in the halites. The solid inclusions include abundant and widely variable organics [2]. Analyses by Raman microprobe, SEM/EDX, synchrotron X-ray diffraction and TEM reveal that these grains include macromolecular carbon similar in structure to CV3 chondrite matrix carbon, aliphatic carbon compounds, olivine (Fo (sub 99-59) ), high-and low-Ca pyroxene, feldspars, magnetite, sulfides, lepidocrocite, carbonates, diamond, apatite and possibly the zeolite phillipsite [3]. Here we report organic analyses of these carbonaceous residues in Monahans halite using C-, N-, and O-X-ray absorption near edge structure (XANES). Approximately 100 nm-thick sections were extracted with a focused ion beam (FIB) at JSC from solid inclusions from Monahans halite. The sections were analyzed using the scanning transmission X-ray microscope (STXM) on beamline 5.3.2.2 at the Advanced Light Source, Lawrence Berkeley National Laboratory for XANES spectroscopy. C-XANES spectra of the solid inclusions show micrometer-scale heterogeneity, indicating that the macromolecular carbon in the inclusions have complex chemical variations. C-XANES features include 284.7 eV assigned to aromatic C=C, 288.4-288.8 eV assigned to carboxyl, and 290.6 eV assigned to carbonate. The carbonyl features obtained by C-XANES might have been caused by the FIB used in sample preparation. No specific N-XANES features are observed. Various degrees of 1s-delta +exciton shown in the C-XANES spectra indicate that the solid inclusions contain macromolecular carbon which experienced various degree of thermal processing. The natures of the macromolecular carbon in the solid inclusions observed by C-XANES are consistent with the previous studies showing that the solid inclusions have not originated from Monahans parent body [1-3]. References: [1] Zolensky et al. 1999. Science 285: 1377-1379. [2] Fries et al. 2011. 74th MetSoc #5390. [3] Zolensky et al. 2013. 76th MetSoc #5200. JF - Abstract - Japan Geoscience Union Meeting AU - Kebukawa, Yoko AU - Zolensky, Michael AU - Kilcoyne, David AU - Rahman, Zia AU - Fries, Marc AU - Cody, George AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - Abstract PPS25 EP - 14 PB - Japan Geoscience Union, Tokyo VL - 2014 KW - halides KW - carbonaceous composition KW - ordinary chondrites KW - stony meteorites KW - parent bodies KW - thermal metamorphism KW - H chondrites KW - metamorphism KW - X-ray spectra KW - halite KW - XANES spectra KW - meteorites KW - Monahans Meteorite KW - carbon KW - inclusions KW - chlorides KW - spectra KW - chondrites KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1793205832?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstract+-+Japan+Geoscience+Union+Meeting&rft.atitle=C-XANES+analyses+of+carbonaceous+solid+inclusions+from+Monahans+halite&rft.au=Kebukawa%2C+Yoko%3BZolensky%2C+Michael%3BKilcoyne%2C+David%3BRahman%2C+Zia%3BFries%2C+Marc%3BCody%2C+George%3BAnonymous&rft.aulast=Kebukawa&rft.aufirst=Yoko&rft.date=2014-01-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstract+-+Japan+Geoscience+Union+Meeting&rft.issn=&rft_id=info:doi/ L2 - http://www2.jpgu.org/meeting/2014/PDF2014/2014ALL_e.pdf http://www.jpgu.org/index-e/publications/abstcats.html LA - English DB - GeoRef N1 - Conference title - Japan Geoscience Union meeting 2014 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - SuppNotes - Accessed on Jan. 5, 2015 N1 - Last updated - 2016-06-02 N1 - CODEN - #07429 N1 - SubjectsTermNotLitGenreText - carbon; carbonaceous composition; chlorides; chondrites; H chondrites; halides; halite; inclusions; metamorphism; meteorites; Monahans Meteorite; ordinary chondrites; parent bodies; spectra; stony meteorites; thermal metamorphism; X-ray spectra; XANES spectra ER - TY - JOUR T1 - 3-D observation of GEMS by electron tomography AN - 1793204825; 2016-048388 AB - Amorphous silicates in chondritic porous interplanetary dust particles (CP-IDPs) coming from comets are dominated by glass with embedded metal and sulfides (GEMS). GEMS grains are submicron-sized rounded objects (typically 100-500 nm in diameter) with nanometer-sized (10-50 nm) Fe-Ni metal and sulfide grains embedded in an amorphous silicate matrix. Several formation processes for GEMS grains have been proposed so far, but these models are still being debated [2-5]. Bradley et al. proposed that GEMS grains are interstellar silicate dust that survived various metamorphism or alteration processes in the protoplanetary disk and that they are amorphization products of crystalline silicates in the interstellar medium by sputter-deposition of cosmic ray irradiation, similar to space weathering [2,4]. This consideration is based on the observation of nano-sized crystals ( approximately 10 nm) called relict grains in GEMS grains and their shapes are pseudomorphs to the host GEMS grains. On the other hand, Keller and Messenger proposed that most GEMS grains formed in the protoplanetary disk as condensates from high temperature gas [3,5]. This model is based on the fact that most GEMS grains have solar isotopic compositions and have extremely heterogeneous and non-solar elemental compositions. Keller & Messenger (2011) also reported that amorphous silicates in GEMS grains are surrounded by sulfide grains, which formed as sulfidization of metallic iron grains located on the GEMS surface. The previous studies were performed with 2D observation by using transmission electron microscopy (TEM) or scanning TEM (STEM). In order to understand the structure of GEMS grains described above more clearly, we observed 3D structure of GEMS grains by electron tomography using a TEM/STEM (JEM-2100F, JEOL) at Kyoto University. Electron tomography gives not only 3D structures but also gives higher spatial resolution ( approximately a few nm) than that in conventional 2D image, which is restricted by the sample thickness ( approximately >50 nm). Three cluster IDPs (L2036AA5 cluster4, L2009O8 cluster13 and W7262A2) were used for the observations. IDP W7262A2 was collected without silicon oil, which is ordinary used to collect IDPs, so this sample has no possibility of contaminations caused by silicon oil or solvent to rinse it [6]. The samples were embedded in epoxy resin and sliced into ultrathin sections (50-300 nm) using an ultramicrotome. The sections were observed by BF-TEM (bright field-TEM) and HAADF-STEM (high angle annular dark field-scanning TEM) modes. Images were obtained by rotating the sample tilt angle over a range of + or -65 degree in 1 degree steps. The obtained images were reconstructed to slice images. Mineral phases in the slice images were estimated by comparing with a 2D elemental map obtained by an EDS (energy dispersive X-ray spectroscopy) system equipped in the TEM/STEM. Careful examination of the slice images confirmed that iron grains are embedded in the amorphous silicate matrix of the GEMS grains, but sulfide grains were mainly present on the surface of the amorphous silicate. These results are consistent with the model that GEMS grains formed as condensates [3,5], although more data are needed to conclude the origin of GEMS grains. The present study is the first successful example adapting the electron tomography to the IDPs. This type of analysis will be important for planetary material sciences in the future. [1] Bradley et al. (1999) Science, 285, 1716 [2] Bradley and Dai (2004) ApJ, 617, 650 [3] Keller and Messenger (2011) GCA, 75, 5336 [4] Bradley (2013) GCA, 107, 336 [5] Keller and Messenger (2013) GCA, 107, 341 [6] Messenger et al. (2012) 43rd LPSC, 2696 (abstr.) JF - Abstract - Japan Geoscience Union Meeting AU - Matsuno, Junya AU - Miyake, Akira AU - Tsuchiyama, Akira AU - Nakamura-Messenger, Keiko AU - Messenger, Scott AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - Abstract no. PPS24 EP - 02 PB - Japan Geoscience Union, Tokyo VL - 2014 KW - tomography KW - sulfidation KW - amorphous materials KW - glass with embedded metal and sulfides KW - electron tomography KW - porous materials KW - electron microscopy data KW - protoplanetary disk KW - interplanetary dust KW - TEM data KW - cosmic dust KW - condensates KW - sulfides KW - interstellar dust KW - GEMS grains KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1793204825?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstract+-+Japan+Geoscience+Union+Meeting&rft.atitle=3-D+observation+of+GEMS+by+electron+tomography&rft.au=Matsuno%2C+Junya%3BMiyake%2C+Akira%3BTsuchiyama%2C+Akira%3BNakamura-Messenger%2C+Keiko%3BMessenger%2C+Scott%3BAnonymous&rft.aulast=Matsuno&rft.aufirst=Junya&rft.date=2014-01-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstract+-+Japan+Geoscience+Union+Meeting&rft.issn=&rft_id=info:doi/ L2 - http://www2.jpgu.org/meeting/2014/PDF2014/2014ALL_e.pdf http://www.jpgu.org/index-e/publications/abstcats.html LA - English DB - GeoRef N1 - Conference title - Japan Geoscience Union meeting 2014 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 6 N1 - SuppNotes - Accessed on Jan. 2, 2015 N1 - Last updated - 2016-08-18 N1 - CODEN - #07429 N1 - SubjectsTermNotLitGenreText - amorphous materials; condensates; cosmic dust; electron microscopy data; electron tomography; GEMS grains; glass with embedded metal and sulfides; interplanetary dust; interstellar dust; porous materials; protoplanetary disk; sulfidation; sulfides; TEM data; tomography ER - TY - JOUR T1 - Evolution of hydrogen during SAM analyses of the Sheepbed Mudstone, Gale Crater, Mars AN - 1789752207; 2016-043538 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Brunner, Anna E AU - Mahaffy, P R AU - McAdam, A C AU - Stern, J C AU - Ming, D W AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1158 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - isotopes KW - mass spectra KW - Mars KW - stable isotopes KW - Gale Crater KW - Curiosity Rover KW - spectra KW - drilling KW - water KW - mineral interlayer KW - isotope ratios KW - smectite KW - dehydroxylation KW - Sheepbed Mudstone KW - gases KW - clay minerals KW - terrestrial planets KW - planets KW - Sample Analysis at Mars KW - D/H KW - hydrogen KW - Mars Science Laboratory KW - sheet silicates KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789752207?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Evolution+of+hydrogen+during+SAM+analyses+of+the+Sheepbed+Mudstone%2C+Gale+Crater%2C+Mars&rft.au=Brunner%2C+Anna+E%3BMahaffy%2C+P+R%3BMcAdam%2C+A+C%3BStern%2C+J+C%3BMing%2C+D+W%3BAnonymous&rft.aulast=Brunner&rft.aufirst=Anna&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1158.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Jun. 17, 2015 N1 - Last updated - 2016-05-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - clay minerals; Curiosity Rover; D/H; dehydroxylation; drilling; Gale Crater; gases; hydrogen; isotope ratios; isotopes; Mars; Mars Science Laboratory; mass spectra; mineral interlayer; planets; Sample Analysis at Mars; Sheepbed Mudstone; sheet silicates; silicates; smectite; spectra; stable isotopes; terrestrial planets; water ER - TY - JOUR T1 - The influence of the textural properties of iron oxides on their visible to near infrared spectra and applications to Mars AN - 1789752128; 2016-043528 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Fraeman, A A AU - Arvidson, Raymond E AU - Jolliff, B L AU - Morris, Richard V AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1503 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - United States KW - near-infrared spectra KW - iron oxides KW - optical spectra KW - sandstone KW - Mars KW - Cambrian KW - Mars Exploration Rover KW - California KW - Ordovician KW - sedimentary rocks KW - hematite KW - oxides KW - spectra KW - radiative transfer KW - Cima volcanic field KW - San Bernardino County California KW - spherules KW - Meridiani Planum KW - Marquette County Michigan KW - Opportunity Rover KW - textures KW - Paleozoic KW - Roubidoux Formation KW - Michigan Upper Peninsula KW - iron hydroxides KW - terrestrial planets KW - models KW - hydroxides KW - planets KW - Lamotte Sandstone KW - rock varnish KW - natural analogs KW - Michigan KW - clastic rocks KW - 04:Extraterrestrial geology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789752128?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+influence+of+the+textural+properties+of+iron+oxides+on+their+visible+to+near+infrared+spectra+and+applications+to+Mars&rft.au=Fraeman%2C+A+A%3BArvidson%2C+Raymond+E%3BJolliff%2C+B+L%3BMorris%2C+Richard+V%3BAnonymous&rft.aulast=Fraeman&rft.aufirst=A&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1503.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Jun. 16, 2015 N1 - Last updated - 2016-08-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - California; Cambrian; Cima volcanic field; clastic rocks; hematite; hydroxides; iron hydroxides; iron oxides; Lamotte Sandstone; Marquette County Michigan; Mars; Mars Exploration Rover; Meridiani Planum; Michigan; Michigan Upper Peninsula; models; natural analogs; near-infrared spectra; Opportunity Rover; optical spectra; Ordovician; oxides; Paleozoic; planets; radiative transfer; rock varnish; Roubidoux Formation; San Bernardino County California; sandstone; sedimentary rocks; spectra; spherules; terrestrial planets; textures; United States ER - TY - JOUR T1 - Thermal decomposition of calcium perchlorate/iron-mineral mixtures; implications of the evolved oxygen from the Rocknest eolian deposit in Gale Crater AN - 1789751986; 2016-043549 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Bruck, A M AU - Sutter, B AU - Ming, D W AU - Mahaffy, P AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2057 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - eolian features KW - oxygen KW - thermal alteration KW - halogens KW - olivine group KW - Mars KW - temperature KW - Gale Crater KW - catalysis KW - hematite KW - fayalite KW - Curiosity Rover KW - orthosilicates KW - oxides KW - calcium perchlorate KW - calorimetry KW - chlorine KW - iron minerals KW - Rocknest KW - perchlorate KW - terrestrial planets KW - nesosilicates KW - planets KW - Sample Analysis at Mars instrument KW - Mars Science Laboratory KW - pyrite KW - differential scanning calorimetry KW - dehydration KW - sulfides KW - magnetite KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789751986?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+decomposition+of+calcium+perchlorate%2Firon-mineral+mixtures%3B+implications+of+the+evolved+oxygen+from+the+Rocknest+eolian+deposit+in+Gale+Crater&rft.au=Bruck%2C+A+M%3BSutter%2C+B%3BMing%2C+D+W%3BMahaffy%2C+P%3BAnonymous&rft.aulast=Bruck&rft.aufirst=A&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2057.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Jun. 17, 2015 N1 - Last updated - 2016-05-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - calcium perchlorate; calorimetry; catalysis; chlorine; Curiosity Rover; dehydration; differential scanning calorimetry; eolian features; fayalite; Gale Crater; halogens; hematite; iron minerals; magnetite; Mars; Mars Science Laboratory; nesosilicates; olivine group; orthosilicates; oxides; oxygen; perchlorate; planets; pyrite; Rocknest; Sample Analysis at Mars instrument; silicates; sulfides; temperature; terrestrial planets; thermal alteration ER - TY - JOUR T1 - Electron microprobe confirmation of ChemCam LIBS analyses; thin sections from a Mars analogue site AN - 1789751563; 2016-043525 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Gallegos, Zach E AU - Newsom, H E AU - Ollila, A M AU - Lanza, N L AU - Wiens, R C AU - Clegg, S M AU - McInroy, R E AU - Osinski, G R AU - Lee, P AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2305 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - ChemCam instrument KW - breccia KW - impact features KW - Mars KW - thin sections KW - metasomatism KW - Gale Crater KW - emission spectra KW - electron probe data KW - terrestrial planets KW - Queen Elizabeth Islands KW - planets KW - Devon Island KW - Canada KW - Nunavut KW - natural analogs KW - Mars Science Laboratory KW - LIBS spectra KW - Haughton impact structure KW - impact craters KW - hydrothermal alteration KW - spectra KW - carbonates KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789751563?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Electron+microprobe+confirmation+of+ChemCam+LIBS+analyses%3B+thin+sections+from+a+Mars+analogue+site&rft.au=Gallegos%2C+Zach+E%3BNewsom%2C+H+E%3BOllila%2C+A+M%3BLanza%2C+N+L%3BWiens%2C+R+C%3BClegg%2C+S+M%3BMcInroy%2C+R+E%3BOsinski%2C+G+R%3BLee%2C+P%3BAnonymous&rft.aulast=Gallegos&rft.aufirst=Zach&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2305.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Jun. 16, 2015 N1 - Last updated - 2016-05-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - breccia; Canada; carbonates; ChemCam instrument; Devon Island; electron probe data; emission spectra; Gale Crater; Haughton impact structure; hydrothermal alteration; impact craters; impact features; LIBS spectra; Mars; Mars Science Laboratory; metasomatism; natural analogs; Nunavut; planets; Queen Elizabeth Islands; spectra; terrestrial planets; thin sections ER - TY - JOUR T1 - Spectral properties of Na, Ca-, Mg- and Fe-chlorides and analyses of hydrohalite-bearing samples from Axel Heiberg Island AN - 1789751465; 2016-043560 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Bishop, J L AU - Ward, M K AU - Roush, T L AU - Davila, A AU - Brown, A J AU - McKay, C P AU - Quinn, R AU - Pollard, W AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2145 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - halides KW - near-infrared spectra KW - calcium chloride KW - optical spectra KW - Mars KW - magnesium chloride KW - hydrohalite KW - Axel Heiberg Island KW - temperature KW - Queen Elizabeth Islands KW - laboratory studies KW - Sverdrup Islands KW - ice KW - Nunavut KW - chlorides KW - spectra KW - water KW - sodium chloride KW - terrestrial planets KW - planets KW - Canada KW - natural analogs KW - seasonal variations KW - reflectance KW - iron chloride KW - 04:Extraterrestrial geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789751465?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Spectral+properties+of+Na%2C+Ca-%2C+Mg-+and+Fe-chlorides+and+analyses+of+hydrohalite-bearing+samples+from+Axel+Heiberg+Island&rft.au=Bishop%2C+J+L%3BWard%2C+M+K%3BRoush%2C+T+L%3BDavila%2C+A%3BBrown%2C+A+J%3BMcKay%2C+C+P%3BQuinn%2C+R%3BPollard%2C+W%3BAnonymous&rft.aulast=Bishop&rft.aufirst=J&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2145.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Jun. 18. 2015 N1 - Last updated - 2016-05-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Axel Heiberg Island; calcium chloride; Canada; chlorides; halides; hydrohalite; ice; iron chloride; laboratory studies; magnesium chloride; Mars; natural analogs; near-infrared spectra; Nunavut; optical spectra; planets; Queen Elizabeth Islands; reflectance; seasonal variations; sodium chloride; spectra; Sverdrup Islands; temperature; terrestrial planets; water ER - TY - JOUR T1 - The investigation of chlorates as a possible source of oxygen and chlorine detected by the Sample Analysis at Mars (SAM) instrument in Gale Crater, Mars AN - 1789751260; 2016-043552 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Sutter, B AU - Archer, P D AU - Ming, D W AU - Niles, P B AU - Eigenbrode, J L AU - Franz, H AU - Glavin, D P AU - McAdam, A C AU - Mahaffy, P AU - Stern, J C AU - Navarro-Gonzalez, R AU - McKay, C P AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2136 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - oxygen KW - thermal alteration KW - magnesium chlorate KW - halogens KW - mass spectra KW - Mars KW - temperature KW - Gale Crater KW - calcium chlorate KW - Curiosity Rover KW - chlorates KW - spectra KW - inorganic acids KW - calorimetry KW - chlorine KW - experimental studies KW - Rocknest KW - gases KW - terrestrial planets KW - planets KW - Sample Analysis at Mars instrument KW - Mars Science Laboratory KW - hydrochloric acid KW - differential scanning calorimetry KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789751260?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+chlorates+as+a+possible+source+of+oxygen+and+chlorine+detected+by+the+Sample+Analysis+at+Mars+%28SAM%29+instrument+in+Gale+Crater%2C+Mars&rft.au=Sutter%2C+B%3BArcher%2C+P+D%3BMing%2C+D+W%3BNiles%2C+P+B%3BEigenbrode%2C+J+L%3BFranz%2C+H%3BGlavin%2C+D+P%3BMcAdam%2C+A+C%3BMahaffy%2C+P%3BStern%2C+J+C%3BNavarro-Gonzalez%2C+R%3BMcKay%2C+C+P%3BAnonymous&rft.aulast=Sutter&rft.aufirst=B&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2136.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Jun. 17, 2015 N1 - Last updated - 2016-05-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - calcium chlorate; calorimetry; chlorates; chlorine; Curiosity Rover; differential scanning calorimetry; experimental studies; Gale Crater; gases; halogens; hydrochloric acid; inorganic acids; magnesium chlorate; Mars; Mars Science Laboratory; mass spectra; oxygen; planets; Rocknest; Sample Analysis at Mars instrument; spectra; temperature; terrestrial planets; thermal alteration ER - TY - JOUR T1 - Strain measurements of chondrules and refractory inclusions in Allende AN - 1789749077; 2016-043597 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Tait, Alastair W AU - Fisher, Kent R AU - Simon, Justin I AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1309 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - stony meteorites KW - strain KW - refractory materials KW - calcium-aluminum inclusions KW - microstructure KW - olivine group KW - CV chondrites KW - preferred orientation KW - Allende Meteorite KW - meteorites KW - chronology KW - hypervelocity impacts KW - petrofabrics KW - olivine KW - inclusions KW - orthosilicates KW - chondrites KW - accretion KW - matrix KW - structural analysis KW - carbonaceous chondrites KW - impacts KW - deformation KW - nesosilicates KW - X-ray data KW - chondrules KW - petrography KW - computed tomography data KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789749077?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Strain+measurements+of+chondrules+and+refractory+inclusions+in+Allende&rft.au=Tait%2C+Alastair+W%3BFisher%2C+Kent+R%3BSimon%2C+Justin+I%3BAnonymous&rft.aulast=Tait&rft.aufirst=Alastair&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1309.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 18 N1 - PubXState - TX N1 - Document feature - illus. incl. 2 tables N1 - SuppNotes - Accessed on Jun. 26, 2015 N1 - Last updated - 2016-05-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - accretion; Allende Meteorite; calcium-aluminum inclusions; carbonaceous chondrites; chondrites; chondrules; chronology; computed tomography data; CV chondrites; deformation; hypervelocity impacts; impacts; inclusions; matrix; meteorites; microstructure; nesosilicates; olivine; olivine group; orthosilicates; petrofabrics; petrography; preferred orientation; refractory materials; silicates; stony meteorites; strain; structural analysis; X-ray data ER - TY - JOUR T1 - Viewing the Earth's climate from space AN - 1777467810; 2016-027484 AB - Earth is a complex, dynamic system we do not yet fully understand. The Earth system, like the human body, comprises diverse components that interact in complex ways. We need to understand the Earth's atmosphere, lithosphere, hydrosphere, cryosphere, and biosphere as a single connected system. Our planet is changing on all spatial and temporal scales. This presentation will highlight how satellite observations are revolutionizing our understanding of and its response to natural or human-induced changes, and to improve prediction of climate, weather, and natural hazards. JF - Abstract - Japan Geoscience Union Meeting AU - Freilich, Michael AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 PB - Japan Geoscience Union, Tokyo VL - 2014 KW - human activity KW - natural hazards KW - prediction KW - satellite methods KW - meteorology KW - climate change KW - climate KW - remote sensing KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777467810?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstract+-+Japan+Geoscience+Union+Meeting&rft.atitle=Viewing+the+Earth%27s+climate+from+space&rft.au=Freilich%2C+Michael%3BAnonymous&rft.aulast=Freilich&rft.aufirst=Michael&rft.date=2014-01-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstract+-+Japan+Geoscience+Union+Meeting&rft.issn=&rft_id=info:doi/ L2 - http://www2.jpgu.org/meeting/2014/PDF2014/2014ALL_e.pdf http://www.jpgu.org/index-e/publications/abstcats.html LA - English DB - GeoRef N1 - Conference title - Japan Geoscience Union meeting 2014 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - SuppNotes - Accessed on March 11, 2015 N1 - Last updated - 2016-04-01 N1 - CODEN - #07429 N1 - SubjectsTermNotLitGenreText - climate; climate change; human activity; meteorology; natural hazards; prediction; remote sensing; satellite methods ER - TY - JOUR T1 - MarsFest; an annual planetary analog, event hosted by Death Valley National Park AN - 1769965040; 2016-017383 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Bonaccorsi, R AU - Jones, A J P AU - Baldino, R T AU - Thickpenny, A AU - Bleacher, L V AU - McKay, C P AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2904 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - United States KW - programs KW - chemically precipitated rocks KW - public awareness KW - Death Valley National Park KW - government agencies KW - Mars KW - MarsFest KW - education KW - evaporites KW - terrestrial planets KW - planets KW - sedimentary rocks KW - NASA KW - natural analogs KW - Curiosity Rover KW - Mars Science Laboratory KW - microorganisms KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1769965040?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=MarsFest%3B+an+annual+planetary+analog%2C+event+hosted+by+Death+Valley+National+Park&rft.au=Bonaccorsi%2C+R%3BJones%2C+A+J+P%3BBaldino%2C+R+T%3BThickpenny%2C+A%3BBleacher%2C+L+V%3BMcKay%2C+C+P%3BAnonymous&rft.aulast=Bonaccorsi&rft.aufirst=R&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2904.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 April 24, 2015 N1 - Last updated - 2016-05-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - chemically precipitated rocks; Curiosity Rover; Death Valley National Park; education; evaporites; government agencies; Mars; Mars Science Laboratory; MarsFest; microorganisms; NASA; natural analogs; planets; programs; public awareness; sedimentary rocks; terrestrial planets; United States ER - TY - JOUR T1 - Automated and accurate; making DTMs from LRO-NAC using the Ames Stereo Pipeline AN - 1756508075; 2016-004236 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Moratto, Zachary M AU - McMichael, Scott T AU - Beyer, Ross A AU - Alexandrov, Oleg AU - Fong, Terry AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2892 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - imagery KW - Ames Stereo Pipeline KW - Moon KW - Lunar Reconnaissance Orbiter KW - data processing KW - digital terrain models KW - automated analysis KW - computer programs KW - errors KW - LOLA KW - Narrow Angle Camera KW - corrections KW - algorithms KW - accuracy KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756508075?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Automated+and+accurate%3B+making+DTMs+from+LRO-NAC+using+the+Ames+Stereo+Pipeline&rft.au=Moratto%2C+Zachary+M%3BMcMichael%2C+Scott+T%3BBeyer%2C+Ross+A%3BAlexandrov%2C+Oleg%3BFong%2C+Terry%3BAnonymous&rft.aulast=Moratto&rft.aufirst=Zachary&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2892.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Jul. 29, 2015 N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - accuracy; algorithms; Ames Stereo Pipeline; automated analysis; computer programs; corrections; data processing; digital terrain models; errors; imagery; LOLA; Lunar Reconnaissance Orbiter; Moon; Narrow Angle Camera ER - TY - JOUR T1 - "Standoff biofinder" for fast, daytime, large area detection of biological materials without sample collection AN - 1756508019; 2016-004270 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Misra, A K AU - Sharma, S K AU - Acosta-Maeda, Tayro E AU - Gasda, P J AU - Lucey, P G AU - Taylor, G J AU - McKay, C P AU - Abedin, M N AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1498 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - biomineralization KW - imagery KW - Standoff Biofinder instrument KW - laser methods KW - astrobiology KW - biomarkers KW - planets KW - fluorescence spectroscopy KW - detection KW - fluorescence KW - laser-induced fluorescence KW - spectroscopy KW - instruments KW - biology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756508019?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=%22Standoff+biofinder%22+for+fast%2C+daytime%2C+large+area+detection+of+biological+materials+without+sample+collection&rft.au=Misra%2C+A+K%3BSharma%2C+S+K%3BAcosta-Maeda%2C+Tayro+E%3BGasda%2C+P+J%3BLucey%2C+P+G%3BTaylor%2C+G+J%3BMcKay%2C+C+P%3BAbedin%2C+M+N%3BAnonymous&rft.aulast=Misra&rft.aufirst=A&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1498.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Aug. 3, 2015 N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - astrobiology; biology; biomarkers; biomineralization; detection; fluorescence; fluorescence spectroscopy; imagery; instruments; laser methods; laser-induced fluorescence; planets; spectroscopy; Standoff Biofinder instrument ER - TY - JOUR T1 - ToF-SIMS investigation of the effectiveness of acid-cleaning procedures for Genesis solar wind collectors AN - 1756508007; 2016-004257 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Goreva, Y S AU - Humayun, M AU - Burnett, D S AU - Jurewicz, A J G AU - Gonzalez, Carla P AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2586 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - methods KW - sulfuric acid KW - magnesium KW - ion probe data KW - isotopes KW - solar wind KW - mass spectra KW - techniques KW - ToF-SIMS KW - stable isotopes KW - iron KW - argon sputtering KW - time-of-flight KW - chemical treatment KW - spectra KW - Li-6 KW - inorganic acids KW - Sample 60493 KW - alkaline earth metals KW - Genesis Mission KW - lithium KW - alkali metals KW - cleaning methods KW - sample preparation KW - organic compounds KW - Sample 60500 KW - metals KW - hydrocarbons KW - scanning electron microscopy KW - particles KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756508007?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=ToF-SIMS+investigation+of+the+effectiveness+of+acid-cleaning+procedures+for+Genesis+solar+wind+collectors&rft.au=Goreva%2C+Y+S%3BHumayun%2C+M%3BBurnett%2C+D+S%3BJurewicz%2C+A+J+G%3BGonzalez%2C+Carla+P%3BAnonymous&rft.aulast=Goreva&rft.aufirst=Y&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2586.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Jul. 31, 2015 N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alkali metals; alkaline earth metals; argon sputtering; chemical treatment; cleaning methods; Genesis Mission; hydrocarbons; inorganic acids; ion probe data; iron; isotopes; Li-6; lithium; magnesium; mass spectra; metals; methods; organic compounds; particles; Sample 60493; Sample 60500; sample preparation; scanning electron microscopy; solar wind; spectra; stable isotopes; sulfuric acid; techniques; time-of-flight; ToF-SIMS ER - TY - JOUR T1 - In situ geochronology on the Mars 2020 rover with KArLE (Potassium-Argon Laser Experiment) AN - 1756507993; 2016-004314 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Cohen, Barbara A AU - Swindle, T D AU - Roark, S E AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1140 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - upper Precambrian KW - laser-induced breakdown spectroscopy KW - detection limit KW - Mars KW - cores KW - emission spectra KW - Potassium-Argon Laser Experiment KW - laboratory studies KW - KArLE KW - chronology KW - dates KW - absolute age KW - LIBS spectra KW - spectra KW - uncertainty KW - Boulder Creek Granite KW - Precambrian KW - in situ KW - Proterozoic KW - mass spectroscopy KW - emission spectroscopy KW - terrestrial planets KW - planets KW - K/Ar KW - spectroscopy KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507993?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=In+situ+geochronology+on+the+Mars+2020+rover+with+KArLE+%28Potassium-Argon+Laser+Experiment%29&rft.au=Cohen%2C+Barbara+A%3BSwindle%2C+T+D%3BRoark%2C+S+E%3BAnonymous&rft.aulast=Cohen&rft.aufirst=Barbara&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1140.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Aug. 21, 2015 N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - absolute age; Boulder Creek Granite; chronology; cores; dates; detection limit; emission spectra; emission spectroscopy; in situ; instruments; K/Ar; KArLE; laboratory studies; laser-induced breakdown spectroscopy; LIBS spectra; Mars; mass spectroscopy; planets; Potassium-Argon Laser Experiment; Precambrian; Proterozoic; spectra; spectroscopy; terrestrial planets; uncertainty; upper Precambrian ER - TY - JOUR T1 - MEDA; an environmental and meteorological package for Mars 2020 AN - 1756507979; 2016-004278 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Rodriguez-Manfredi, J A AU - de la Torre, M AU - Tamppari, L AU - Conrad, P G AU - Lemmon, M AU - Martinez, G AU - Newman, C AU - Smith, M AU - Schofield, T AU - Gomez-Elvira, J AU - Gomez, F AU - Harri, A M AU - Navarro, S AU - Prieto, O AU - Ramos, M AU - Saiz-Lopez, A AU - Sanchez-Lavega, A AU - Sebastian, E AU - Genzer, M AU - Kemppinen, O AU - Perez-Hoyos, S AU - Bridges, N T AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2837 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - monitoring KW - pressure KW - in situ KW - clastic sediments KW - atmosphere KW - Mars KW - temperature KW - terrestrial planets KW - planets KW - physical properties KW - optical properties KW - humidity KW - dust KW - solar radiation KW - sediments KW - atmospheric pressure KW - aerosols KW - diurnal variations KW - meteorology KW - Mars Environmental Dynamics Analyzer KW - winds KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507979?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=MEDA%3B+an+environmental+and+meteorological+package+for+Mars+2020&rft.au=Rodriguez-Manfredi%2C+J+A%3Bde+la+Torre%2C+M%3BTamppari%2C+L%3BConrad%2C+P+G%3BLemmon%2C+M%3BMartinez%2C+G%3BNewman%2C+C%3BSmith%2C+M%3BSchofield%2C+T%3BGomez-Elvira%2C+J%3BGomez%2C+F%3BHarri%2C+A+M%3BNavarro%2C+S%3BPrieto%2C+O%3BRamos%2C+M%3BSaiz-Lopez%2C+A%3BSanchez-Lavega%2C+A%3BSebastian%2C+E%3BGenzer%2C+M%3BKemppinen%2C+O%3BPerez-Hoyos%2C+S%3BBridges%2C+N+T%3BAnonymous&rft.aulast=Rodriguez-Manfredi&rft.aufirst=J&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2837.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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. 5, 2015 N1 - Last updated - 2016-06-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - aerosols; atmosphere; atmospheric pressure; clastic sediments; diurnal variations; dust; humidity; in situ; Mars; Mars Environmental Dynamics Analyzer; meteorology; monitoring; optical properties; physical properties; planets; pressure; sediments; solar radiation; temperature; terrestrial planets; winds ER - TY - JOUR T1 - Investigation of backside textures for Genesis solar wind silicon collectors AN - 1756507926; 2016-004259 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Gonzalez, Carla P AU - Burkett, P J AU - Rodriguez, M C AU - Allton, J H AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2727 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - imagery KW - Genesis Mission KW - textures KW - silicon collector KW - solar wind KW - optical imagery KW - interplanetary space KW - silicon KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507926?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Investigation+of+backside+textures+for+Genesis+solar+wind+silicon+collectors&rft.au=Gonzalez%2C+Carla+P%3BBurkett%2C+P+J%3BRodriguez%2C+M+C%3BAllton%2C+J+H%3BAnonymous&rft.aulast=Gonzalez&rft.aufirst=Carla&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2727.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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. 2 tables N1 - SuppNotes - Accessed on Jul. 31, 2015 N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Genesis Mission; imagery; instruments; interplanetary space; optical imagery; silicon; silicon collector; solar wind; textures ER - TY - JOUR T1 - ECTFE (Halar) as a new material for primary sample containment of astromaterials AN - 1756507909; 2016-004327 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Calaway, Michael J AU - McConnell, J T AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1095 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - sample return KW - astromaterials KW - gas chromatograms KW - mass spectra KW - electron microscopy data KW - samples KW - ethylene-chlorotrifluoroethylene KW - infrared spectra KW - FTIR spectra KW - curation KW - Halar KW - fluoropolymers KW - stars KW - chromatograms KW - spectra KW - polymers KW - SEM data KW - storage KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507909?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=ECTFE+%28Halar%29+as+a+new+material+for+primary+sample+containment+of+astromaterials&rft.au=Calaway%2C+Michael+J%3BMcConnell%2C+J+T%3BAnonymous&rft.aulast=Calaway&rft.aufirst=Michael&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1095.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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. 25, 2015 N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - astromaterials; chromatograms; curation; electron microscopy data; ethylene-chlorotrifluoroethylene; fluoropolymers; FTIR spectra; gas chromatograms; Halar; infrared spectra; mass spectra; polymers; sample return; samples; SEM data; spectra; stars; storage ER - TY - JOUR T1 - Rate comparisons of magnetite and iron catalysts during Fischer-Tropsch-type reactions AN - 1756507893; 2016-004211 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Johnson, Natasha M AU - McCarthy, M AU - Nuth, J A, III AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2702 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - ammonium KW - aliphatic hydrocarbons KW - astrobiology KW - iron KW - infrared spectra KW - carbon dioxide KW - FTIR spectra KW - catalysis KW - chemical reactions KW - oxides KW - spectra KW - Fischer-Tropsch-type reactions KW - water KW - experimental studies KW - methane KW - biochemistry KW - rates KW - alkanes KW - gases KW - carbon monoxide KW - organic compounds KW - metals KW - hydrogen KW - hydrocarbons KW - magnetite KW - 04:Extraterrestrial geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507893?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Rate+comparisons+of+magnetite+and+iron+catalysts+during+Fischer-Tropsch-type+reactions&rft.au=Johnson%2C+Natasha+M%3BMcCarthy%2C+M%3BNuth%2C+J+A%2C+III%3BAnonymous&rft.aulast=Johnson&rft.aufirst=Natasha&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2702.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Jul. 24, 2015 N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; ammonium; astrobiology; biochemistry; carbon dioxide; carbon monoxide; catalysis; chemical reactions; experimental studies; Fischer-Tropsch-type reactions; FTIR spectra; gases; hydrocarbons; hydrogen; infrared spectra; iron; magnetite; metals; methane; organic compounds; oxides; rates; spectra; water ER - TY - JOUR T1 - Cellulose acetate replica cleaning study of Genesis non-flight sample 3CZ00327 AN - 1756507883; 2016-004256 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Kuhlman, Kim R AU - Schmeling, M AU - Gonzalez, Carla P AU - Allton, J H AU - Burnett, D S AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2030 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Sample 60966 KW - acetone KW - Genesis Mission KW - solar wind KW - techniques KW - cleaning methods KW - sample preparation KW - organic compounds KW - cellulose acetate replica cleaning KW - hydrocarbons KW - X-ray fluorescence spectra KW - xylene KW - spectra KW - aromatic hydrocarbons KW - ketones KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507883?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Cellulose+acetate+replica+cleaning+study+of+Genesis+non-flight+sample+3CZ00327&rft.au=Kuhlman%2C+Kim+R%3BSchmeling%2C+M%3BGonzalez%2C+Carla+P%3BAllton%2C+J+H%3BBurnett%2C+D+S%3BAnonymous&rft.aulast=Kuhlman&rft.aufirst=Kim&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2030.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Jul. 31, 2015 N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - acetone; aromatic hydrocarbons; cellulose acetate replica cleaning; cleaning methods; Genesis Mission; hydrocarbons; ketones; organic compounds; Sample 60966; sample preparation; solar wind; spectra; techniques; X-ray fluorescence spectra; xylene ER - TY - JOUR T1 - Signs Of Life Detector (SOLID); searching for evidence of past life on Mars AN - 1756507790; 2016-004271 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Parro, V AU - Stoker, Carol AU - Davila, A F AU - Quinn, Richard C AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2653 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - lipids KW - astrobiology KW - Mars KW - Signs of Life Detector KW - biomarkers KW - terrestrial planets KW - planets KW - meteorites KW - organic compounds KW - organic acids KW - detection KW - carbon KW - amino acids KW - immunoassays KW - hydrocarbons KW - polycyclic aromatic hydrocarbons KW - organic carbon KW - instruments KW - aromatic hydrocarbons KW - SOLID instrument KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507790?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Signs+Of+Life+Detector+%28SOLID%29%3B+searching+for+evidence+of+past+life+on+Mars&rft.au=Parro%2C+V%3BStoker%2C+Carol%3BDavila%2C+A+F%3BQuinn%2C+Richard+C%3BAnonymous&rft.aulast=Parro&rft.aufirst=V&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2653.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Aug. 4, 2015 N1 - Last updated - 2016-06-17 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - amino acids; aromatic hydrocarbons; astrobiology; biomarkers; carbon; detection; hydrocarbons; immunoassays; instruments; lipids; Mars; meteorites; organic acids; organic carbon; organic compounds; planets; polycyclic aromatic hydrocarbons; Signs of Life Detector; SOLID instrument; terrestrial planets ER - TY - JOUR T1 - Near-infrared reflectance of tholins in methane ice; preliminary results and implications for interpretation of New Horizon's LEISA data AN - 1756507772; 2016-004310 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Mege, Daniel AU - Singh, S AU - Nna-Mvondo, D AU - Chevrier, V AU - Tobie, G AU - McKay, C P AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1264 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - tholins KW - near-infrared spectra KW - icy satellites KW - aliphatic hydrocarbons KW - feasibility studies KW - dwarf planets KW - temperature KW - reactivity KW - melting KW - mixing KW - ice KW - Titan Satellite KW - spectra KW - satellites KW - New Horizons Mission KW - liquid phase KW - experimental studies KW - methane KW - alkanes KW - LEISA instrument KW - solid phase KW - organic compounds KW - evaporation KW - hydrocarbons KW - Pluto KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507772?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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-infrared+reflectance+of+tholins+in+methane+ice%3B+preliminary+results+and+implications+for+interpretation+of+New+Horizon%27s+LEISA+data&rft.au=Mege%2C+Daniel%3BSingh%2C+S%3BNna-Mvondo%2C+D%3BChevrier%2C+V%3BTobie%2C+G%3BMcKay%2C+C+P%3BAnonymous&rft.aulast=Mege&rft.aufirst=Daniel&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1264.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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. 19, 2015 N1 - Last updated - 2016-05-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; dwarf planets; evaporation; experimental studies; feasibility studies; hydrocarbons; ice; icy satellites; LEISA instrument; liquid phase; melting; methane; mixing; near-infrared spectra; New Horizons Mission; organic compounds; Pluto; reactivity; satellites; solid phase; spectra; temperature; tholins; Titan Satellite ER - TY - JOUR T1 - Genesis solar wind collector cleaning assessment; 60366 sample case study AN - 1756507752; 2016-004255 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Goreva, Y S AU - Gonzalez, Carla P AU - Kuhlman, K R AU - Burnett, D S AU - Woolum, D AU - Jurewicz, A J G AU - Allton, J H AU - Rodriguez, M C AU - Burkett, P J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2245 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - imagery KW - Genesis Mission KW - ion probe data KW - solar wind KW - mass spectra KW - techniques KW - electron microscopy data KW - cleaning methods KW - samples KW - evaluation KW - sample preparation KW - Sample 60366 KW - spectra KW - SEM data KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507752?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Genesis+solar+wind+collector+cleaning+assessment%3B+60366+sample+case+study&rft.au=Goreva%2C+Y+S%3BGonzalez%2C+Carla+P%3BKuhlman%2C+K+R%3BBurnett%2C+D+S%3BWoolum%2C+D%3BJurewicz%2C+A+J+G%3BAllton%2C+J+H%3BRodriguez%2C+M+C%3BBurkett%2C+P+J%3BAnonymous&rft.aulast=Goreva&rft.aufirst=Y&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2245.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Jul. 31, 2015 N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - cleaning methods; electron microscopy data; evaluation; Genesis Mission; imagery; ion probe data; mass spectra; Sample 60366; sample preparation; samples; SEM data; solar wind; spectra; techniques ER - TY - JOUR T1 - Mission concept designer's guide to the Radioisotope Power Systems reference book AN - 1756507738; 2016-004337 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Lee, Young H AU - Zakrajsek, June F AU - Bairstow, Brian K AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1478 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - solar system KW - technology KW - development KW - outer solar system KW - Radioisotope Power Systems KW - concepts KW - exploration KW - planets KW - nuclear energy KW - spacecraft KW - energy KW - design KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507738?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Mission+concept+designer%27s+guide+to+the+Radioisotope+Power+Systems+reference+book&rft.au=Lee%2C+Young+H%3BZakrajsek%2C+June+F%3BBairstow%2C+Brian+K%3BAnonymous&rft.aulast=Lee&rft.aufirst=Young&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1478.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Sept. 1, 2015 N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - concepts; design; development; energy; exploration; nuclear energy; outer solar system; planets; Radioisotope Power Systems; solar system; spacecraft; technology ER - TY - JOUR T1 - Clickworkers Interactive; progress on a JPEG2000-streaming annotation interface AN - 1756507722; 2016-004242 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Coleman, Evan A AU - Ishikawa, Sascha T AU - Gulick, Virginia C AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2593 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - imagery KW - crowdsourcing KW - public awareness KW - data processing KW - Mars KW - landforms KW - Mars Orbiter Camera KW - terrestrial planets KW - computer programs KW - planets KW - classification KW - HiRISE KW - computer networks KW - Clickworkers Interactive KW - citizen science KW - Internet KW - image enhancement KW - image analysis KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507722?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Clickworkers+Interactive%3B+progress+on+a+JPEG2000-streaming+annotation+interface&rft.au=Coleman%2C+Evan+A%3BIshikawa%2C+Sascha+T%3BGulick%2C+Virginia+C%3BAnonymous&rft.aulast=Coleman&rft.aufirst=Evan&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2593.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Jul. 29, 2015 N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - citizen science; classification; Clickworkers Interactive; computer networks; computer programs; crowdsourcing; data processing; HiRISE; image analysis; image enhancement; imagery; Internet; landforms; Mars; Mars Orbiter Camera; planets; public awareness; terrestrial planets ER - TY - JOUR T1 - Development of Genesis solar wind sample cleanliness assessment; initial report on sample 60341 optical imagery and elemental mapping AN - 1756507638; 2016-004253 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Gonzalez, Carla P AU - Goreva, Y S AU - Burnett, D S AU - Woolum, D AU - Jurewicz, A J G AU - Allton, J H AU - Rodriguez, M C AU - Burkett, P J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2127 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - imagery KW - Genesis Mission KW - ion probe data KW - development KW - solar wind KW - optical imagery KW - mass spectra KW - techniques KW - cleaning methods KW - samples KW - evaluation KW - sample preparation KW - Sample 60341 KW - spectra KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507638?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Development+of+Genesis+solar+wind+sample+cleanliness+assessment%3B+initial+report+on+sample+60341+optical+imagery+and+elemental+mapping&rft.au=Gonzalez%2C+Carla+P%3BGoreva%2C+Y+S%3BBurnett%2C+D+S%3BWoolum%2C+D%3BJurewicz%2C+A+J+G%3BAllton%2C+J+H%3BRodriguez%2C+M+C%3BBurkett%2C+P+J%3BAnonymous&rft.aulast=Gonzalez&rft.aufirst=Carla&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2127.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Jul. 31, 2015 N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - cleaning methods; development; evaluation; Genesis Mission; imagery; ion probe data; mass spectra; optical imagery; Sample 60341; sample preparation; samples; solar wind; spectra; techniques ER - TY - JOUR T1 - Investigating the formation, evolution, and habitability of the Galilean satellites with high performance mass spectrometry AN - 1756507595; 2016-004274 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Wyrick, D Y AU - Waite, J H, Jr AU - Brockwell, T AU - McGrath, M AU - McKinnon, W B AU - Mousis, O AU - Magee, B AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1615 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - icy satellites KW - ammonium KW - oxygen KW - Europa Satellite KW - isotopes KW - aliphatic hydrocarbons KW - Io Satellite KW - Galilean satellites KW - ethane KW - metasomatism KW - stable isotopes KW - carbon dioxide KW - Ar-40 KW - noble gases KW - carbon KW - hydrothermal alteration KW - satellites KW - water KW - sulfur dioxide KW - methane KW - mass spectroscopy KW - alkanes KW - argon KW - carbon monoxide KW - volatiles KW - organic compounds KW - habitability KW - metals KW - hydrogen KW - nickel KW - hydrocarbons KW - sulfur KW - spectroscopy KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507595?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+the+formation%2C+evolution%2C+and+habitability+of+the+Galilean+satellites+with+high+performance+mass+spectrometry&rft.au=Wyrick%2C+D+Y%3BWaite%2C+J+H%2C+Jr%3BBrockwell%2C+T%3BMcGrath%2C+M%3BMcKinnon%2C+W+B%3BMousis%2C+O%3BMagee%2C+B%3BAnonymous&rft.aulast=Wyrick&rft.aufirst=D&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1615.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Aug. 4, 2015 N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; ammonium; Ar-40; argon; carbon; carbon dioxide; carbon monoxide; ethane; Europa Satellite; Galilean satellites; habitability; hydrocarbons; hydrogen; hydrothermal alteration; icy satellites; Io Satellite; isotopes; mass spectroscopy; metals; metasomatism; methane; nickel; noble gases; organic compounds; oxygen; satellites; spectroscopy; stable isotopes; sulfur; sulfur dioxide; volatiles; water ER - TY - JOUR T1 - Volume measurements of laser-generated pits for in situ geochronology using KArLE (Potassium-Argon Laser Experiment) AN - 1756507564; 2016-004315 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - French, Renee A AU - Cohen, Barbara A AU - Miller, J S AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1936 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - volcanic rocks KW - laser-induced breakdown spectroscopy KW - laser methods KW - density KW - igneous rocks KW - microcline KW - Mars KW - Potassium-Argon Laser Experiment KW - mass KW - KArLE KW - errors KW - chronology KW - alkali feldspar KW - noble gases KW - basalts KW - framework silicates KW - heterogeneity KW - uncertainty KW - rhyolites KW - precision KW - in situ KW - sulfates KW - alkali metals KW - laser ablation KW - mass spectroscopy KW - measurement KW - emission spectroscopy KW - argon KW - terrestrial planets KW - jarosite KW - planets KW - metals KW - natural analogs KW - volume KW - potassium KW - spectroscopy KW - feldspar group KW - accuracy KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507564?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Volume+measurements+of+laser-generated+pits+for+in+situ+geochronology+using+KArLE+%28Potassium-Argon+Laser+Experiment%29&rft.au=French%2C+Renee+A%3BCohen%2C+Barbara+A%3BMiller%2C+J+S%3BAnonymous&rft.aulast=French&rft.aufirst=Renee&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1936.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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. 21, 2015 N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - accuracy; alkali feldspar; alkali metals; argon; basalts; chronology; density; emission spectroscopy; errors; feldspar group; framework silicates; heterogeneity; igneous rocks; in situ; instruments; jarosite; KArLE; laser ablation; laser methods; laser-induced breakdown spectroscopy; Mars; mass; mass spectroscopy; measurement; metals; microcline; natural analogs; noble gases; planets; potassium; Potassium-Argon Laser Experiment; precision; rhyolites; silicates; spectroscopy; sulfates; terrestrial planets; uncertainty; volcanic rocks; volume ER - TY - JOUR T1 - SHERLOC; Scanning Habitable Environments with Raman Luminescence for Organics and Chemicals, an investigation for 2020 AN - 1756507562; 2016-004208 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Beegle, Luther W AU - Bhartia, R AU - DeFlores, L AU - Darrach, M AU - Kidd, R D AU - Abbey, W AU - Asher, S AU - Burton, A AU - Clegg, S M AU - Conrad, P G AU - Edgett, K AU - Ehlmann, B L AU - Langenforst, F AU - Fries, M AU - Hug, W AU - Nealson, K AU - Popp, J AU - Sorbon, P AU - Steele, Andrew AU - Wiens, R AU - Williford, K AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2835 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - SHERLOC KW - astrobiology KW - Mars KW - fluorescence KW - carbon KW - thermal maturity KW - Mars 2020 Mission KW - ultraviolet spectra KW - Archean KW - spectra KW - Precambrian KW - biomarkers KW - Scanning Habitable Environments with Raman Luminescence for Organics & Chemicals KW - terrestrial planets KW - planets KW - luminescence KW - Fig Tree Group KW - organic compounds KW - Raman spectra KW - detection KW - boreholes KW - habitability KW - hydrocarbons KW - polycyclic aromatic hydrocarbons KW - instruments KW - aromatic hydrocarbons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507562?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=SHERLOC%3B+Scanning+Habitable+Environments+with+Raman+Luminescence+for+Organics+and+Chemicals%2C+an+investigation+for+2020&rft.au=Beegle%2C+Luther+W%3BBhartia%2C+R%3BDeFlores%2C+L%3BDarrach%2C+M%3BKidd%2C+R+D%3BAbbey%2C+W%3BAsher%2C+S%3BBurton%2C+A%3BClegg%2C+S+M%3BConrad%2C+P+G%3BEdgett%2C+K%3BEhlmann%2C+B+L%3BLangenforst%2C+F%3BFries%2C+M%3BHug%2C+W%3BNealson%2C+K%3BPopp%2C+J%3BSorbon%2C+P%3BSteele%2C+Andrew%3BWiens%2C+R%3BWilliford%2C+K%3BAnonymous&rft.aulast=Beegle&rft.aufirst=Luther&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2835.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Jul. 24, 2015 N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Archean; aromatic hydrocarbons; astrobiology; biomarkers; boreholes; carbon; detection; Fig Tree Group; fluorescence; habitability; hydrocarbons; instruments; luminescence; Mars; Mars 2020 Mission; organic compounds; planets; polycyclic aromatic hydrocarbons; Precambrian; Raman spectra; Scanning Habitable Environments with Raman Luminescence for Organics & Chemicals; SHERLOC; spectra; terrestrial planets; thermal maturity; ultraviolet spectra ER - TY - JOUR T1 - A new plasma drilling technology with applications for Moon, asteroid, and Mars exploration and ISRU AN - 1756507542; 2016-004333 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Johansen, B W AU - Lee, P AU - Naesje, K AU - Lekens, W AU - Sorensen, Per H AU - Wetteland, O AU - Glass, Brian AU - Hoftun, Christopher AU - Zacny, Kris AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2594 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - water KW - resources KW - plasma drilling technology KW - technology KW - in situ KW - development KW - asteroids KW - Moon KW - astrobiology KW - Mars KW - depth KW - ground water KW - exploration KW - aquifers KW - terrestrial planets KW - planets KW - volatiles KW - geothermal gradient KW - drilling KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507542?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=A+new+plasma+drilling+technology+with+applications+for+Moon%2C+asteroid%2C+and+Mars+exploration+and+ISRU&rft.au=Johansen%2C+B+W%3BLee%2C+P%3BNaesje%2C+K%3BLekens%2C+W%3BSorensen%2C+Per+H%3BWetteland%2C+O%3BGlass%2C+Brian%3BHoftun%2C+Christopher%3BZacny%2C+Kris%3BAnonymous&rft.aulast=Johansen&rft.aufirst=B&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2594.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Sept. 1, 2015 N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - aquifers; asteroids; astrobiology; depth; development; drilling; exploration; geothermal gradient; ground water; in situ; Mars; Moon; planets; plasma drilling technology; resources; technology; terrestrial planets; volatiles; water ER - TY - JOUR T1 - Miniature lightweight X-ray optics (MiXO) for solar system exploration AN - 1756507537; 2016-004294 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Hong, J AU - Grindlay, J AU - Romaine, S AU - Ramsey, B AU - Binzel, R P AU - Boynton, W AU - Georenstein, P AU - Kraft, R AU - Kenter, A AU - Elvis, M AU - Wolk, S AU - Smith, R AU - Lim, L AU - Lisse, C AU - Branduardi-Raymont, G AU - Allen, B AU - Lee, J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2203 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - solar system KW - optics KW - X-ray fluorescence KW - telescope methods KW - miniature instruments KW - astrobiology KW - cost KW - concepts KW - exploration KW - planets KW - X-rays KW - comets KW - X-ray analysis KW - Wolter-I X-ray optics KW - Miniature X-ray Optics KW - satellites KW - chemical composition KW - instruments KW - design KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507537?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Miniature+lightweight+X-ray+optics+%28MiXO%29+for+solar+system+exploration&rft.au=Hong%2C+J%3BGrindlay%2C+J%3BRomaine%2C+S%3BRamsey%2C+B%3BBinzel%2C+R+P%3BBoynton%2C+W%3BGeorenstein%2C+P%3BKraft%2C+R%3BKenter%2C+A%3BElvis%2C+M%3BWolk%2C+S%3BSmith%2C+R%3BLim%2C+L%3BLisse%2C+C%3BBranduardi-Raymont%2C+G%3BAllen%2C+B%3BLee%2C+J%3BAnonymous&rft.aulast=Hong&rft.aufirst=J&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2203.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Aug. 14, 2015 N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - astrobiology; chemical composition; comets; concepts; cost; design; exploration; instruments; miniature instruments; Miniature X-ray Optics; optics; planets; satellites; solar system; telescope methods; Wolter-I X-ray optics; X-ray analysis; X-ray fluorescence; X-rays ER - TY - JOUR T1 - XRF analysis of stony meteorites using an elemental analyzer and a portable XRS AN - 1756507368; 2016-004293 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Kim, Kyeong Ja AU - Choi, Ire AU - Lee, Seung Ryeol AU - Yi, Eung Seok AU - Choi, Han Woo AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2700 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Zag Meteorite KW - Northwest Africa Meteorites KW - calcium KW - alkaline earth metals KW - chemical analysis KW - stony meteorites KW - X-ray fluorescence KW - iron KW - meteorites KW - quantitative analysis KW - SELENE-2 Mission KW - metals KW - NWA 1222 KW - classification KW - X-ray spectroscopy KW - X-ray fluorescence spectra KW - X-ray analysis KW - sulfur KW - spectra KW - spectroscopy KW - instruments KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507368?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=XRF+analysis+of+stony+meteorites+using+an+elemental+analyzer+and+a+portable+XRS&rft.au=Kim%2C+Kyeong+Ja%3BChoi%2C+Ire%3BLee%2C+Seung+Ryeol%3BYi%2C+Eung+Seok%3BChoi%2C+Han+Woo%3BAnonymous&rft.aulast=Kim&rft.aufirst=Kyeong&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2700.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Aug. 14, 2015 N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alkaline earth metals; calcium; chemical analysis; classification; instruments; iron; metals; meteorites; Northwest Africa Meteorites; NWA 1222; quantitative analysis; SELENE-2 Mission; spectra; spectroscopy; stony meteorites; sulfur; X-ray analysis; X-ray fluorescence; X-ray fluorescence spectra; X-ray spectroscopy; Zag Meteorite ER - TY - JOUR T1 - Aligning terrain model and laser altimeter point clouds with the Ames Stereo Pipeline AN - 1756507329; 2016-004237 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Beyer, Ross A AU - Alexandrov, Oleg AU - Moratto, Zachary M AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2902 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - imagery KW - laser methods KW - Lunar Reconnaissance Orbiter Camera KW - data processing KW - Mars KW - Apollo Program KW - digital terrain models KW - Context Camera KW - errors KW - algorithms KW - Ames Stereo Pipeline KW - three-dimensional models KW - Moon KW - iterative methods KW - altimetry KW - High Resolution Stereo Camera KW - terrestrial planets KW - computer programs KW - planets KW - point clouds KW - lidar methods KW - LOLA KW - MOLA KW - Apollo 15 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507329?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Aligning+terrain+model+and+laser+altimeter+point+clouds+with+the+Ames+Stereo+Pipeline&rft.au=Beyer%2C+Ross+A%3BAlexandrov%2C+Oleg%3BMoratto%2C+Zachary+M%3BAnonymous&rft.aulast=Beyer&rft.aufirst=Ross&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2902.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Jul. 29, 2015 N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - algorithms; altimetry; Ames Stereo Pipeline; Apollo 15; Apollo Program; computer programs; Context Camera; data processing; digital terrain models; errors; High Resolution Stereo Camera; imagery; iterative methods; laser methods; lidar methods; LOLA; Lunar Reconnaissance Orbiter Camera; Mars; MOLA; Moon; planets; point clouds; terrestrial planets; three-dimensional models ER - TY - JOUR T1 - SIRSE; a Spectral ImageR and Spectrometer for Europa AN - 1756507309; 2016-004307 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Simon, A A AU - Reuter, D C AU - Olkin, C B AU - Stern, S A AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1034 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - hydrates KW - icy satellites KW - imagery KW - Europa Satellite KW - SiRISE KW - mapping KW - Galilean satellites KW - organic compounds KW - infrared spectroscopy KW - ice KW - Spectral ImageR and Spectrometer for Europa KW - brines KW - satellites KW - spectroscopy KW - instruments KW - cameras KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507309?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=SIRSE%3B+a+Spectral+ImageR+and+Spectrometer+for+Europa&rft.au=Simon%2C+A+A%3BReuter%2C+D+C%3BOlkin%2C+C+B%3BStern%2C+S+A%3BAnonymous&rft.aulast=Simon&rft.aufirst=A&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1034.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Aug. 18, 2015 N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - brines; cameras; Europa Satellite; Galilean satellites; hydrates; ice; icy satellites; imagery; infrared spectroscopy; instruments; mapping; organic compounds; satellites; SiRISE; Spectral ImageR and Spectrometer for Europa; spectroscopy ER - TY - JOUR T1 - Microimaging spectroscopy on Mars with CIMMBA, proposed for Mars-2020; the Caching-supporting Infrared Microimager for Mineralogy and Biosignature Assessment AN - 1756507270; 2016-004298 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Ehlmann, B L AU - Mustard, J F AU - Murchie, S L AU - Green, R O AU - Mouroulis, P AU - Van Gorp, B AU - Jeganathan, M AU - Wu, Y H AU - Glavich, T AU - Bartos, R AU - Tucker, S AU - Nastal, J AU - Strohbehn, K AU - Blaney, D AU - Boardman, J AU - Farmer, J AU - Fischer, W AU - Grotzinger, J AU - Herd, C D K AU - Hoehler, T AU - Hurowitz, J AU - Schmidt, M E AU - Seelos, F AU - Wadhwa, M AU - Santo, A AU - Ferdosi, J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2824 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - textures KW - data processing KW - astrobiology KW - Mars KW - Caching-supporting Infrared Microimager for Mineralogy and Biosignature Assessment KW - biomarkers KW - CIMMBA instrument KW - terrestrial planets KW - planets KW - infrared spectroscopy KW - sedimentary rocks KW - mineral composition KW - optical spectroscopy KW - microimaging spectroscopy KW - spectroscopy KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507270?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Microimaging+spectroscopy+on+Mars+with+CIMMBA%2C+proposed+for+Mars-2020%3B+the+Caching-supporting+Infrared+Microimager+for+Mineralogy+and+Biosignature+Assessment&rft.au=Ehlmann%2C+B+L%3BMustard%2C+J+F%3BMurchie%2C+S+L%3BGreen%2C+R+O%3BMouroulis%2C+P%3BVan+Gorp%2C+B%3BJeganathan%2C+M%3BWu%2C+Y+H%3BGlavich%2C+T%3BBartos%2C+R%3BTucker%2C+S%3BNastal%2C+J%3BStrohbehn%2C+K%3BBlaney%2C+D%3BBoardman%2C+J%3BFarmer%2C+J%3BFischer%2C+W%3BGrotzinger%2C+J%3BHerd%2C+C+D+K%3BHoehler%2C+T%3BHurowitz%2C+J%3BSchmidt%2C+M+E%3BSeelos%2C+F%3BWadhwa%2C+M%3BSanto%2C+A%3BFerdosi%2C+J%3BAnonymous&rft.aulast=Ehlmann&rft.aufirst=B&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2824.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Aug. 17, 2015 N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - astrobiology; biomarkers; Caching-supporting Infrared Microimager for Mineralogy and Biosignature Assessment; CIMMBA instrument; data processing; infrared spectroscopy; instruments; Mars; microimaging spectroscopy; mineral composition; optical spectroscopy; planets; sedimentary rocks; spectroscopy; terrestrial planets; textures ER - TY - JOUR T1 - Validation of suborbital spaceflight experiments through zero-G flight demonstration of flight-ready hardware AN - 1756507250; 2016-004266 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Durda, D D AU - Tsang, C C C AU - Stern, S A AU - Olkin, C B AU - Smith, K Ennico AU - Schindhelm, E R AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2102 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - microgravity KW - surface properties KW - experimental studies KW - near-Earth objects KW - asteroids KW - near-Earth asteroids KW - impacts KW - simulation KW - flight KW - suborbital flight KW - payloads KW - zero-gravity KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507250?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Validation+of+suborbital+spaceflight+experiments+through+zero-G+flight+demonstration+of+flight-ready+hardware&rft.au=Durda%2C+D+D%3BTsang%2C+C+C+C%3BStern%2C+S+A%3BOlkin%2C+C+B%3BSmith%2C+K+Ennico%3BSchindhelm%2C+E+R%3BAnonymous&rft.aulast=Durda&rft.aufirst=D&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2102.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Aug. 3, 2015 N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - asteroids; experimental studies; flight; impacts; microgravity; near-Earth asteroids; near-Earth objects; payloads; regolith; simulation; suborbital flight; surface properties; zero-gravity ER - TY - JOUR T1 - JANUS; the visible camera onboard the ESA JUICE mission to the Jovian system AN - 1756507180; 2016-004308 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Palumbo, P AU - Jaumann, Ralf AU - Cremonese, Gabriele AU - Hoffmann, H AU - Debei, S AU - Della Corte, V AU - Holland, A AU - Lara, L M AU - Castro, J M AU - Herranz, M AU - Koncz, A AU - Leese, M AU - Lichopoj, A AU - Magrin, D AU - Martinez-Navajas, I AU - Mazzotta Epifani, E AU - Michaelis, H AU - Ragazzoni, R AU - Roatsch, T AU - Rodriguez, E AU - Schipani, P AU - Schmitz, Nicole AU - Zaccariotto, M AU - Zusi, M AU - Adriani, A AU - Aharonson, O AU - Bell, J AU - Bougeois, O AU - Capria, M T AU - Coates, A AU - Coustenis, A AU - Di Achille, G AU - Forlani, Gianfranco AU - van Gasselt, S AU - Groussin, O AU - Gwinner, Klaus AU - Haruyama, J AU - Hauber, Ernst AU - Hiesinger, H AU - Langevin, Y AU - Lopes, R AU - Marinangeli, L AU - Markiewicz, W AU - Marzari, F AU - Massironi, M AU - Mehall, G AU - Mitri, G AU - Mottola, S AU - Oberst, J AU - Patel, M AU - Pelizzo, M G AU - Popa, C AU - Poulet, F AU - Preusker, F AU - Rodrigo, R AU - Schneider, N AU - Simon-Miller, A AU - Stephan, K AU - Takahashi, Y AU - Tosi, F AU - Vincendon, M AU - Wagner, R AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2094 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - icy satellites KW - imagery KW - Europa Satellite KW - Jovis, Amorum ac Natorum Undique Scrutator KW - Jupiter KW - Ganymede Satellite KW - Io Satellite KW - Galilean satellites KW - JUICE Mission KW - giant planets KW - outer planets KW - satellites KW - cameras KW - near-infrared spectroscopy KW - European Space Agency KW - Jupiter Icy Moon Explorer Mission KW - atmosphere KW - planets KW - planetary rings KW - objectives KW - Callisto Satellite KW - JANUS instrument KW - optical spectroscopy KW - spectroscopy KW - stereo imagery KW - instruments KW - design KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507180?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=JANUS%3B+the+visible+camera+onboard+the+ESA+JUICE+mission+to+the+Jovian+system&rft.au=Palumbo%2C+P%3BJaumann%2C+Ralf%3BCremonese%2C+Gabriele%3BHoffmann%2C+H%3BDebei%2C+S%3BDella+Corte%2C+V%3BHolland%2C+A%3BLara%2C+L+M%3BCastro%2C+J+M%3BHerranz%2C+M%3BKoncz%2C+A%3BLeese%2C+M%3BLichopoj%2C+A%3BMagrin%2C+D%3BMartinez-Navajas%2C+I%3BMazzotta+Epifani%2C+E%3BMichaelis%2C+H%3BRagazzoni%2C+R%3BRoatsch%2C+T%3BRodriguez%2C+E%3BSchipani%2C+P%3BSchmitz%2C+Nicole%3BZaccariotto%2C+M%3BZusi%2C+M%3BAdriani%2C+A%3BAharonson%2C+O%3BBell%2C+J%3BBougeois%2C+O%3BCapria%2C+M+T%3BCoates%2C+A%3BCoustenis%2C+A%3BDi+Achille%2C+G%3BForlani%2C+Gianfranco%3Bvan+Gasselt%2C+S%3BGroussin%2C+O%3BGwinner%2C+Klaus%3BHaruyama%2C+J%3BHauber%2C+Ernst%3BHiesinger%2C+H%3BLangevin%2C+Y%3BLopes%2C+R%3BMarinangeli%2C+L%3BMarkiewicz%2C+W%3BMarzari%2C+F%3BMassironi%2C+M%3BMehall%2C+G%3BMitri%2C+G%3BMottola%2C+S%3BOberst%2C+J%3BPatel%2C+M%3BPelizzo%2C+M+G%3BPopa%2C+C%3BPoulet%2C+F%3BPreusker%2C+F%3BRodrigo%2C+R%3BSchneider%2C+N%3BSimon-Miller%2C+A%3BStephan%2C+K%3BTakahashi%2C+Y%3BTosi%2C+F%3BVincendon%2C+M%3BWagner%2C+R%3BAnonymous&rft.aulast=Palumbo&rft.aufirst=P&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2094.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Aug. 19, 2015 N1 - Last updated - 2016-05-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - atmosphere; Callisto Satellite; cameras; design; Europa Satellite; European Space Agency; Galilean satellites; Ganymede Satellite; giant planets; icy satellites; imagery; instruments; Io Satellite; JANUS instrument; Jovis, Amorum ac Natorum Undique Scrutator; JUICE Mission; Jupiter; Jupiter Icy Moon Explorer Mission; near-infrared spectroscopy; objectives; optical spectroscopy; outer planets; planetary rings; planets; satellites; spectroscopy; stereo imagery ER - TY - JOUR T1 - Sulfur-bearing compounds detected by MSL SAM evolved gas analysis of materials from Yellowknife Bay, Gale Crater, Mars AN - 1752579151; 2016-002563 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - McAdam, Amy C AU - Franz, H B AU - Archer, P D, Jr AU - Sutter, B AU - Eigenbrode, Jennifer L AU - Freissinet, C AU - Atreya, S K AU - Bish, D L AU - Blake, D F AU - Brunner, A AU - Mahaffy, P R AU - Ming, D W AU - Morris, R V AU - Navarro-Gonzalez, R AU - Rampe, E B AU - Steele, A AU - Wray, J J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2257 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - mass spectra KW - Mars KW - temperature KW - Gale Crater KW - sedimentary rocks KW - John Klein Outcrop KW - Cumberland KW - spectra KW - pyrrhotite KW - Yellowknife Bay KW - sulfur dioxide KW - mudstone KW - amorphous materials KW - oxidation KW - hydrogen sulfide KW - Sheepbed Mudstone KW - gases KW - terrestrial planets KW - planets KW - volatiles KW - Sample Analysis at Mars KW - detection KW - Mars Science Laboratory KW - sulfur KW - sulfides KW - clastic rocks KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752579151?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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-bearing+compounds+detected+by+MSL+SAM+evolved+gas+analysis+of+materials+from+Yellowknife+Bay%2C+Gale+Crater%2C+Mars&rft.au=McAdam%2C+Amy+C%3BFranz%2C+H+B%3BArcher%2C+P+D%2C+Jr%3BSutter%2C+B%3BEigenbrode%2C+Jennifer+L%3BFreissinet%2C+C%3BAtreya%2C+S+K%3BBish%2C+D+L%3BBlake%2C+D+F%3BBrunner%2C+A%3BMahaffy%2C+P+R%3BMing%2C+D+W%3BMorris%2C+R+V%3BNavarro-Gonzalez%2C+R%3BRampe%2C+E+B%3BSteele%2C+A%3BWray%2C+J+J%3BAnonymous&rft.aulast=McAdam&rft.aufirst=Amy&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2257.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Jul. 20, 2015 N1 - Last updated - 2016-05-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - amorphous materials; clastic rocks; Cumberland; detection; Gale Crater; gases; hydrogen sulfide; John Klein Outcrop; Mars; Mars Science Laboratory; mass spectra; mudstone; oxidation; planets; pyrrhotite; Sample Analysis at Mars; sedimentary rocks; Sheepbed Mudstone; spectra; sulfides; sulfur; sulfur dioxide; temperature; terrestrial planets; volatiles; Yellowknife Bay ER - TY - JOUR T1 - The importance of nanophase aluminosilicates at Mawrth Vallis AN - 1752578890; 2016-002577 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Bishop, J L AU - Rampe, E B AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2068 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - silica minerals KW - Mars KW - iron KW - infrared spectra KW - aluminosilicates KW - Mawrth Vallis KW - aluminum KW - thermal emission KW - imogolite KW - framework silicates KW - spectra KW - montmorillonite KW - water KW - hisingerite KW - CRISM KW - opal KW - kaolinite KW - weathering KW - clay minerals KW - terrestrial planets KW - aqueous alteration KW - planets KW - allophane KW - metals KW - sheet silicates KW - halloysite KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752578890?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+importance+of+nanophase+aluminosilicates+at+Mawrth+Vallis&rft.au=Bishop%2C+J+L%3BRampe%2C+E+B%3BAnonymous&rft.aulast=Bishop&rft.aufirst=J&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2068.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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. incl. 1 table N1 - SuppNotes - Accessed on Jul. 22, 2015 N1 - Last updated - 2015-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - allophane; aluminosilicates; aluminum; aqueous alteration; clay minerals; CRISM; framework silicates; halloysite; hisingerite; imogolite; infrared spectra; iron; kaolinite; Mars; Mawrth Vallis; metals; montmorillonite; opal; planets; sheet silicates; silica minerals; silicates; spectra; terrestrial planets; thermal emission; water; weathering ER - TY - JOUR T1 - Crystallization experiment of alpha-Fe, gamma-Fe and iron compounds found in the Almahata Sitta and Antarctic ureilites AN - 1752578887; 2016-002907 AB - Ureilites are ultramafic achondrites whose origin and petrogenesis are still controversial. The cooling rate of ureilites estimated from silicates is approximately a few degrees per hour, and it was considered to reflect catastrophic disruption of the ureilite parent body. Ureilites were broken into meter-sized fragments and then formed daughter body(ies) by re-accumulation. Fe-Ni metal is one of the major components of all types of ureilites. Almahata Sitta, having fallen on the earth in October 2008, was classified as a polymict ureilite and ureilitic fragments from the Almahata Sitta contain abundant Fe-Ni metal. In previous studies, some grain boundary metals in Almahata Sitta ureilites show unique textures, not found in main group ureilites. These textures show characteristic assemblages with various combinations of a-iron (bcc), .-iron (fcc), cohenite ([Fe,Ni]3C) and schreibersite ([Fe,Ni]3P). Those metal textures resemble the product by steelmaking process in the earth, for example martensite (a-iron and .-iron). Generally, these textures require rapid cooling equivalent to quenching by water (>100 ./s). However, the cooling rate estimated from silicates (ca. several ./h) is much slower than that in producing the martensite. Thus, these metal textures may record the event separated from the event that recorded in the silicates, that is, disruption of parent body. Therefore, studying these complicated metal textures will contribute to a better understanding of the formation and origin of metal in ureilites with the information about their thermal histories. Those metal textures were only found in Almahata Sitta fragment #44, in previous studies, but we found similar assemblages composed of iron metal and its compounds in other fragments of Almahata Sitta and Antarctic ureilites. Forms and abundances are variable depending on samples, but it is suggested that those mineral assemblages in Fe-Ni metal are commonly found in ureilites. To estimate the cooling rate which can form these iron and iron compounds textures, we performed cooling experiments by the electric furnace to heat and quench metal whose compositions correspond to metals showing complex metal phase assemblages in Almahata Sitta ureilite. The results suggest that those metal textures can be achieved in the cooling rate faster than the lowest limit between 10 ./s and 0.83 ./s, whose chemical composition is Fe (sub 79.2) Ni (sub 3.4) P (sub 2.5) Si (sub 2.7) C (sub 12.2) . At lower cooling rate (0.83 or 0.04 ./s) and 10 ./s of other starting material (Fe (sub 86.4) Ni (sub 2.8) P (sub 0.7) Si (sub 4.1) C (sub 6.0) ), interstitial schreibersite among rounded iron was detected and neither cohenite nor gamma -iron has been formed. In the carbon-free composition (Fe (sub 91.2) Ni (sub 3.9) P (sub 0.5) Si (sub 4.4) ), similar textures were not generated at all cooling rates. This cooling rate, forming metal textures, is much faster than that estimated from silicates, and thus it is concluded that the event recorded by the silicates and the event formed the metal textures were truly separated. Before disruption of ureilite parent body, primary metals probably melted and mixed with surrounding materials (graphite, phosphide and other iron compounds) to various extents at high temperature. The iron phase was considered to be uniformly gamma -iron. Then, the ureilite parent body was destroyed and silicate minerals obtained cooling rate by quenching. Later, daughter body(ies) formed by accumulation of meter-size fragments. If daughter body(ies) was either shocked while still hot or heated by shock and then disrupted into smaller fragments (cm-size), the formation of iron textures may be achieved by super rapid cooling exceeding 1 degrees C/s. The metal grains without gamma -iron would experience relatively slow cooling due to larger fragment size. Consequently, it is considered that the complex coexistences of iron and iron compounds found in ureilites have recorded temperature change and fragmentation process due to the impacts on the parent body and daughter body(ies). JF - Abstract - Japan Geoscience Union Meeting AU - Aoyagi, Yuya AU - Mikouchi, Takashi AU - Sugiyama, Kazumasa AU - Yokoyama, Yoshihiko AU - Goodrich, Cyrena A AU - Zolensky, Michael E AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 PB - Japan Geoscience Union, Tokyo VL - 2014 KW - experimental studies KW - stony meteorites KW - textures KW - rates KW - ureilite KW - achondrites KW - iron KW - meteorites KW - laboratory studies KW - Antarctica KW - metals KW - cooling KW - crystallization KW - Almahata Sitta Meteorite KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752578887?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstract+-+Japan+Geoscience+Union+Meeting&rft.atitle=Crystallization+experiment+of+alpha-Fe%2C+gamma-Fe+and+iron+compounds+found+in+the+Almahata+Sitta+and+Antarctic+ureilites&rft.au=Aoyagi%2C+Yuya%3BMikouchi%2C+Takashi%3BSugiyama%2C+Kazumasa%3BYokoyama%2C+Yoshihiko%3BGoodrich%2C+Cyrena+A%3BZolensky%2C+Michael+E%3BAnonymous&rft.aulast=Aoyagi&rft.aufirst=Yuya&rft.date=2014-01-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstract+-+Japan+Geoscience+Union+Meeting&rft.issn=&rft_id=info:doi/ L2 - http://www2.jpgu.org/meeting/2014/PDF2014/2014ALL_e.pdf http://www.jpgu.org/index-e/publications/abstcats.html LA - English DB - GeoRef N1 - Conference title - Japan Geoscience Union meeting 2014 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - SuppNotes - Accessed on March 27, 2015 N1 - Last updated - 2016-05-19 N1 - CODEN - #07429 N1 - SubjectsTermNotLitGenreText - achondrites; Almahata Sitta Meteorite; Antarctica; cooling; crystallization; experimental studies; iron; laboratory studies; metals; meteorites; rates; stony meteorites; textures; ureilite ER - TY - JOUR T1 - Three isotopes of oxygen in lunar samples; the same as Earth or different? AN - 1752578735; 2016-000472 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Pillinger, C T AU - Greenwood, R C AU - Johnson, D AU - Gibson, E K AU - Miller, M F AU - Franchi, I A AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2654 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - isotope fractionation KW - precision KW - Sample 65522 KW - oxygen KW - Moon KW - isotopes KW - isotope ratios KW - O-18/O-16 KW - stable isotopes KW - Earth-Moon couple KW - lunar samples KW - giant impact hypothesis KW - terrestrial comparison KW - Sample 10085 KW - accuracy KW - regolith KW - O-17/O-16 KW - lunar soils KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752578735?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Three+isotopes+of+oxygen+in+lunar+samples%3B+the+same+as+Earth+or+different%3F&rft.au=Pillinger%2C+C+T%3BGreenwood%2C+R+C%3BJohnson%2C+D%3BGibson%2C+E+K%3BMiller%2C+M+F%3BFranchi%2C+I+A%3BAnonymous&rft.aulast=Pillinger&rft.aufirst=C&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2654.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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. incl. 1 table N1 - SuppNotes - Accessed on Apr. 14, 2015 N1 - Last updated - 2015-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - accuracy; Earth-Moon couple; giant impact hypothesis; isotope fractionation; isotope ratios; isotopes; lunar samples; lunar soils; Moon; O-17/O-16; O-18/O-16; oxygen; precision; regolith; Sample 10085; Sample 65522; stable isotopes; terrestrial comparison ER - TY - JOUR T1 - Expansion of the ChemCam calibration database AN - 1752578519; 2016-002539 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Clegg, S M AU - Anderson, R B AU - Forni, Olivier AU - Lasue, Jeremie AU - Dyar, M D AU - Morris, R V AU - Ehlmann, B L AU - McLennan, S M AU - Bender, S AU - Cousin, A AU - Gasnault, Olivier AU - Martinez, R AU - McInroy, R AU - Delapp, D AU - Melikechi, Noureddine AU - Meslin, P Y AU - Ollila, A AU - Tokar, R L AU - Maurice, S AU - Wiens, R C AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2378 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - magnesium KW - Mars KW - calibration KW - silicon KW - emission spectra KW - sedimentary rocks KW - quantitative analysis KW - multivariate analysis KW - Curiosity Rover KW - data bases KW - LIBS spectra KW - spectra KW - chemical composition KW - Yellowknife Bay KW - ChemCam instrument KW - alkaline earth metals KW - Bradbury Landing KW - statistical analysis KW - alkali metals KW - sodium KW - terrestrial planets KW - planets KW - metals KW - potassium KW - Mars Science Laboratory KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752578519?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Expansion+of+the+ChemCam+calibration+database&rft.au=Clegg%2C+S+M%3BAnderson%2C+R+B%3BForni%2C+Olivier%3BLasue%2C+Jeremie%3BDyar%2C+M+D%3BMorris%2C+R+V%3BEhlmann%2C+B+L%3BMcLennan%2C+S+M%3BBender%2C+S%3BCousin%2C+A%3BGasnault%2C+Olivier%3BMartinez%2C+R%3BMcInroy%2C+R%3BDelapp%2C+D%3BMelikechi%2C+Noureddine%3BMeslin%2C+P+Y%3BOllila%2C+A%3BTokar%2C+R+L%3BMaurice%2C+S%3BWiens%2C+R+C%3BAnonymous&rft.aulast=Clegg&rft.aufirst=S&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2378.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 July 7, 2015 N1 - Last updated - 2015-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alkali metals; alkaline earth metals; Bradbury Landing; calibration; ChemCam instrument; chemical composition; Curiosity Rover; data bases; emission spectra; LIBS spectra; magnesium; Mars; Mars Science Laboratory; metals; multivariate analysis; planets; potassium; quantitative analysis; sedimentary rocks; silicon; sodium; spectra; statistical analysis; terrestrial planets; Yellowknife Bay ER - TY - JOUR T1 - Fresh exposures of allophane in association with channels and debris aprons in Coprates Chasma, Mars AN - 1752578094; 2016-002576 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Weitz, C M AU - Bishop, J L AU - Baker, L AU - Berman, D C AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1386 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - near-infrared spectra KW - Valles Marineris KW - slopes KW - Mars KW - debris flows KW - Context Camera KW - silicon KW - iron KW - Coprates Chasma KW - wall rocks KW - aluminum KW - mass movements KW - HiRISE KW - spectra KW - CRISM KW - channels KW - clay minerals KW - terrestrial planets KW - planets KW - hydration KW - allophane KW - metals KW - sheet silicates KW - debris aprons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752578094?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Fresh+exposures+of+allophane+in+association+with+channels+and+debris+aprons+in+Coprates+Chasma%2C+Mars&rft.au=Weitz%2C+C+M%3BBishop%2C+J+L%3BBaker%2C+L%3BBerman%2C+D+C%3BAnonymous&rft.aulast=Weitz&rft.aufirst=C&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1386.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Jul. 22, 2015 N1 - Last updated - 2015-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - allophane; aluminum; channels; clay minerals; Context Camera; Coprates Chasma; CRISM; debris aprons; debris flows; HiRISE; hydration; iron; Mars; mass movements; metals; near-infrared spectra; planets; sheet silicates; silicates; silicon; slopes; spectra; terrestrial planets; Valles Marineris; wall rocks ER - TY - JOUR T1 - Exploring the composition and nature of the X-ray amorphous components of Martian soil and rocks at Gale Crater, Mars AN - 1752577763; 2016-002561 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Dehouck, Erwin AU - McLennan, S M AU - Meslin, P Y AU - Cousin, A AU - Rampe, E B AU - Lanza, N L AU - Hurowitz, J A AU - Rapin, W AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1454 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - X-ray diffraction data KW - Cumberland outcrop KW - Mars KW - Gale Crater KW - mineral composition KW - John Klein Outcrop KW - mass balance KW - Curiosity Rover KW - CheMin instrument KW - chemical composition KW - basaltic composition KW - rocks KW - glass materials KW - soils KW - griffithite KW - hisingerite KW - amorphous materials KW - smectite KW - Sheepbed Mudstone KW - Rocknest KW - clay minerals KW - terrestrial planets KW - planets KW - allophane KW - Mars Science Laboratory KW - sheet silicates KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752577763?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+composition+and+nature+of+the+X-ray+amorphous+components+of+Martian+soil+and+rocks+at+Gale+Crater%2C+Mars&rft.au=Dehouck%2C+Erwin%3BMcLennan%2C+S+M%3BMeslin%2C+P+Y%3BCousin%2C+A%3BRampe%2C+E+B%3BLanza%2C+N+L%3BHurowitz%2C+J+A%3BRapin%2C+W%3BAnonymous&rft.aulast=Dehouck&rft.aufirst=Erwin&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1454.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Jul. 10, 2015 N1 - Last updated - 2016-05-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - allophane; amorphous materials; basaltic composition; chemical composition; CheMin instrument; clay minerals; Cumberland outcrop; Curiosity Rover; Gale Crater; glass materials; griffithite; hisingerite; John Klein Outcrop; Mars; Mars Science Laboratory; mass balance; mineral composition; planets; Rocknest; rocks; Sheepbed Mudstone; sheet silicates; silicates; smectite; soils; terrestrial planets; X-ray diffraction data ER - TY - JOUR T1 - Dynamical evolution of the Earth-Moon progenitors AN - 1752577675; 2016-000479 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Quarles, B AU - Lissauer, J J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2216 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - angular momentum KW - Earth KW - Moon KW - orbits KW - planetesimals KW - simulation KW - giant planets KW - eccentricity KW - early solar system KW - terrestrial planets KW - planets KW - motions KW - Earth-Moon couple KW - resonance KW - giant impact hypothesis KW - dynamics KW - proto-Moon KW - hydrodynamics KW - proto-Earth KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752577675?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Dynamical+evolution+of+the+Earth-Moon+progenitors&rft.au=Quarles%2C+B%3BLissauer%2C+J+J%3BAnonymous&rft.aulast=Quarles&rft.aufirst=B&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2216.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Apr. 15, 2015 N1 - Last updated - 2015-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - angular momentum; dynamics; early solar system; Earth; Earth-Moon couple; eccentricity; giant impact hypothesis; giant planets; hydrodynamics; Moon; motions; orbits; planetesimals; planets; proto-Earth; proto-Moon; resonance; simulation; terrestrial planets ER - TY - JOUR T1 - Detection of nitric oxide by the sample analysis at Mars (SAM) instrument; implications for the presence of nitrates AN - 1752577449; 2016-002564 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Navarro-Gonzalez, R AU - Stern, J AU - Freissinet, C AU - Franz, H B AU - Eigenbrode, Jennifer L AU - McKay, C P AU - Coll, P AU - Sutter, B AU - Archer, D AU - McAdam, Amy C AU - Cabane, M AU - Ming, D W AU - Glavin, D P AU - Leshin, L A AU - Wong, M AU - Atreya, S K AU - Wray, J J AU - Steele, A AU - Buch, A AU - Prats, B D AU - Szopa, C AU - Coscia, D AU - Teinturier, S AU - Conrad, P G AU - Owen, T C AU - Mahaffy, P R AU - Grotzinger, J P AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2909 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - soils KW - mudstone KW - nitric oxide KW - Yellowknife Bay Formation KW - nitrates KW - astrobiology KW - Mars KW - Sheepbed Member KW - Rocknest KW - temperature KW - nitrogen KW - Gale Crater KW - terrestrial planets KW - planets KW - volatiles KW - sedimentary rocks KW - detection KW - John Klein Outcrop KW - Cumberland KW - Sample Analysis at Mars Instrument KW - rocks KW - clastic rocks KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752577449?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Detection+of+nitric+oxide+by+the+sample+analysis+at+Mars+%28SAM%29+instrument%3B+implications+for+the+presence+of+nitrates&rft.au=Navarro-Gonzalez%2C+R%3BStern%2C+J%3BFreissinet%2C+C%3BFranz%2C+H+B%3BEigenbrode%2C+Jennifer+L%3BMcKay%2C+C+P%3BColl%2C+P%3BSutter%2C+B%3BArcher%2C+D%3BMcAdam%2C+Amy+C%3BCabane%2C+M%3BMing%2C+D+W%3BGlavin%2C+D+P%3BLeshin%2C+L+A%3BWong%2C+M%3BAtreya%2C+S+K%3BWray%2C+J+J%3BSteele%2C+A%3BBuch%2C+A%3BPrats%2C+B+D%3BSzopa%2C+C%3BCoscia%2C+D%3BTeinturier%2C+S%3BConrad%2C+P+G%3BOwen%2C+T+C%3BMahaffy%2C+P+R%3BGrotzinger%2C+J+P%3BAnonymous&rft.aulast=Navarro-Gonzalez&rft.aufirst=R&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2909.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Jul. 20, 2015 N1 - Last updated - 2016-05-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - astrobiology; clastic rocks; Cumberland; detection; Gale Crater; John Klein Outcrop; Mars; mudstone; nitrates; nitric oxide; nitrogen; planets; Rocknest; rocks; Sample Analysis at Mars Instrument; sedimentary rocks; Sheepbed Member; soils; temperature; terrestrial planets; volatiles; Yellowknife Bay Formation ER - TY - JOUR T1 - The tethered Moon AN - 1752577323; 2016-000481 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Zahnle, Kevin J AU - Lupu, Roxana E AU - Dobrovolskis, Anthony R AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2649 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - interior KW - orbits KW - mantle KW - thermal history KW - temperature KW - rheology KW - heat flow KW - cooling KW - greenhouse effect KW - geothermal gradient KW - magma oceans KW - angular momentum KW - Earth KW - Moon KW - atmosphere KW - impacts KW - tides KW - terrestrial planets KW - models KW - planets KW - Earth-Moon couple KW - volatiles KW - resonance KW - giant impact hypothesis KW - viscosity KW - heating KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752577323?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+tethered+Moon&rft.au=Zahnle%2C+Kevin+J%3BLupu%2C+Roxana+E%3BDobrovolskis%2C+Anthony+R%3BAnonymous&rft.aulast=Zahnle&rft.aufirst=Kevin&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2649.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 18 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Apr. 15, 2015 N1 - Last updated - 2015-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - angular momentum; atmosphere; cooling; Earth; Earth-Moon couple; geothermal gradient; giant impact hypothesis; greenhouse effect; heat flow; heating; impacts; interior; magma oceans; mantle; models; Moon; orbits; planets; resonance; rheology; temperature; terrestrial planets; thermal history; tides; viscosity; volatiles ER - TY - JOUR T1 - Sulfate formation from acid-weathered phyllosilicates; implications for the aqueous history of Mars AN - 1752577280; 2016-000551 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Craig, Patricia I AU - Ming, D W AU - Rampe, E B AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1970 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - near-infrared spectra KW - chemical weathering KW - Noachian KW - X-ray diffraction data KW - sulfates KW - Mars KW - electron microscopy data KW - Hesperian KW - nontronite KW - weathering KW - Gale Crater KW - clay minerals KW - terrestrial planets KW - aqueous alteration KW - planets KW - Mawrth Vallis KW - acidic composition KW - sheet silicates KW - spectra KW - SEM data KW - montmorillonite KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752577280?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Sulfate+formation+from+acid-weathered+phyllosilicates%3B+implications+for+the+aqueous+history+of+Mars&rft.au=Craig%2C+Patricia+I%3BMing%2C+D+W%3BRampe%2C+E+B%3BAnonymous&rft.aulast=Craig&rft.aufirst=Patricia&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1970.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Apr. 21, 2015 N1 - Last updated - 2015-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - acidic composition; aqueous alteration; chemical weathering; clay minerals; electron microscopy data; Gale Crater; Hesperian; Mars; Mawrth Vallis; montmorillonite; near-infrared spectra; Noachian; nontronite; planets; SEM data; sheet silicates; silicates; spectra; sulfates; terrestrial planets; weathering; X-ray diffraction data ER - TY - JOUR T1 - Phase equilibrium experiments on potential lunar core compositions; extension of current knowledge to multi-component (Fe-Ni-Si-S-C) systems AN - 1752577161; 2016-000458 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Righter, Kevin AU - Pando, K AU - Danielson, L AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2111 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - liquid phase KW - lunar core KW - experimental studies KW - pressure KW - iron-nickel alloys KW - Moon KW - low pressure KW - silicon KW - iron KW - temperature KW - phase equilibria KW - metals KW - carbon KW - planetary interiors KW - nickel KW - sulfur KW - core KW - alloys KW - chemical composition KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752577161?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Phase+equilibrium+experiments+on+potential+lunar+core+compositions%3B+extension+of+current+knowledge+to+multi-component+%28Fe-Ni-Si-S-C%29+systems&rft.au=Righter%2C+Kevin%3BPando%2C+K%3BDanielson%2C+L%3BAnonymous&rft.aulast=Righter&rft.aufirst=Kevin&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2111.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 25 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on Apr. 13, 2015 N1 - Last updated - 2016-05-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alloys; carbon; chemical composition; core; experimental studies; iron; iron-nickel alloys; liquid phase; low pressure; lunar core; metals; Moon; nickel; phase equilibria; planetary interiors; pressure; silicon; sulfur; temperature ER - TY - JOUR T1 - Geomorphic and flow analysis for gullies in Palikir Crater AN - 1752576908; 2016-000537 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Narlesky, C A AU - Gulick, Virginia C AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2870 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - bedload KW - imagery KW - sediment transport KW - channels KW - Mars Reconnaissance Orbiter KW - erosion features KW - terraces KW - digital terrain models KW - flows KW - models KW - levees KW - Palikir Crater KW - transport KW - fluvial features KW - velocity KW - HiRISE KW - debris aprons KW - geomorphology KW - gullies KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752576908?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Geomorphic+and+flow+analysis+for+gullies+in+Palikir+Crater&rft.au=Narlesky%2C+C+A%3BGulick%2C+Virginia+C%3BAnonymous&rft.aulast=Narlesky&rft.aufirst=C&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2870.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Apr. 21, 2015 N1 - Last updated - 2015-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - bedload; channels; debris aprons; digital terrain models; erosion features; flows; fluvial features; geomorphology; gullies; HiRISE; imagery; levees; Mars Reconnaissance Orbiter; models; Palikir Crater; sediment transport; terraces; transport; velocity ER - TY - JOUR T1 - Comparative study of gullies in Kaiser Crater on Mars AN - 1752576705; 2016-000538 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Glines, N H AU - Gulick, Virginia C AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2926 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - bedrock KW - alcoves KW - Mars KW - erosion features KW - terraces KW - digital terrain models KW - terrestrial planets KW - morphology KW - planets KW - Kaiser Crater KW - fluvial features KW - streams KW - HiRISE KW - sinuosity KW - gullies KW - dune fields KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752576705?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Comparative+study+of+gullies+in+Kaiser+Crater+on+Mars&rft.au=Glines%2C+N+H%3BGulick%2C+Virginia+C%3BAnonymous&rft.aulast=Glines&rft.aufirst=N&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2926.pdf LA - English DB - GeoRef N1 - Conference title - 45th 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 Apr. 21, 2015 N1 - Last updated - 2015-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alcoves; bedrock; digital terrain models; dune fields; erosion features; fluvial features; gullies; HiRISE; Kaiser Crater; Mars; morphology; planets; sinuosity; streams; terraces; terrestrial planets ER - TY - JOUR T1 - MOMA GC-MS coupling AN - 1739085175; 2015-116441 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Buch, Arnaud AU - Pinnick, V AU - Szopa, C AU - Danell, R AU - van Amerom, F H W AU - Glavin, D AU - Freissinet, C AU - Coll, P AU - Stalport, F AU - Grand, N AU - Lustrement, B AU - Arevalo, R AU - Brinckerhoff, W B AU - Goesmann, F AU - Raulin, F AU - Mahaffy, P AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2907 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Mars Organic Molecule Analyzer KW - gas chromatograms KW - aliphatic hydrocarbons KW - mass spectra KW - astrobiology KW - Mars KW - quantitative analysis KW - spectra KW - chemical composition KW - ExoMars Mission KW - alkanes KW - benzene KW - terrestrial planets KW - planets KW - volatiles KW - organic compounds KW - ion chromatograms KW - pentane KW - chromatograms KW - hexane KW - hydrocarbons KW - testing KW - instruments KW - aromatic hydrocarbons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1739085175?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=MOMA+GC-MS+coupling&rft.au=Buch%2C+Arnaud%3BPinnick%2C+V%3BSzopa%2C+C%3BDanell%2C+R%3Bvan+Amerom%2C+F+H+W%3BGlavin%2C+D%3BFreissinet%2C+C%3BColl%2C+P%3BStalport%2C+F%3BGrand%2C+N%3BLustrement%2C+B%3BArevalo%2C+R%3BBrinckerhoff%2C+W+B%3BGoesmann%2C+F%3BRaulin%2C+F%3BMahaffy%2C+P%3BAnonymous&rft.aulast=Buch&rft.aufirst=Arnaud&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2907.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 3 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on May 29, 2015 N1 - Last updated - 2015-12-04 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; aromatic hydrocarbons; astrobiology; benzene; chemical composition; chromatograms; ExoMars Mission; gas chromatograms; hexane; hydrocarbons; instruments; ion chromatograms; Mars; Mars Organic Molecule Analyzer; mass spectra; organic compounds; pentane; planets; quantitative analysis; spectra; terrestrial planets; testing; volatiles ER - TY - JOUR T1 - Areal crater density analysis of volcanic smooth plains; Mare Imbrium, a revised approach AN - 1739085141; 2015-116410 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Ostrach, L R AU - Robinson, Mark S AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1266 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - relative age KW - impact features KW - density KW - Moon KW - Lunar Reconnaissance Orbiter Camera KW - statistical analysis KW - resurfacing KW - mapping KW - maria KW - lunar craters KW - terrestrial planets KW - spatial distribution KW - planets KW - Mare Imbrium KW - crater counts KW - Mercury Planet KW - impact craters KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1739085141?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Areal+crater+density+analysis+of+volcanic+smooth+plains%3B+Mare+Imbrium%2C+a+revised+approach&rft.au=Ostrach%2C+L+R%3BRobinson%2C+Mark+S%3BAnonymous&rft.aulast=Ostrach&rft.aufirst=L&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1266.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 18 N1 - PubXState - TX N1 - Document feature - illus. incl. sketch maps N1 - SuppNotes - Accessed on May 15, 2015 N1 - Last updated - 2015-12-04 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - crater counts; density; impact craters; impact features; lunar craters; Lunar Reconnaissance Orbiter Camera; mapping; Mare Imbrium; maria; Mercury Planet; Moon; planets; relative age; resurfacing; spatial distribution; statistical analysis; terrestrial planets ER - TY - JOUR T1 - Investigating the geological history of asteroid 101955 Bennu through remote sensing and returned sample analyses AN - 1739085119; 2015-116359 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Messenger, Scott R AU - Connolly, H C, Jr AU - Lauretta, D S AU - Bottke, W F AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1904 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - B-type asteroids KW - CI chondrites KW - near-Earth objects KW - stony meteorites KW - asteroids KW - near-Earth asteroids KW - sample return KW - parent bodies KW - OSIRIS-REx Mission KW - Bennu Asteroid KW - carbonaceous chondrites KW - meteorites KW - CM chondrites KW - chondrites KW - regolith KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1739085119?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+the+geological+history+of+asteroid+101955+Bennu+through+remote+sensing+and+returned+sample+analyses&rft.au=Messenger%2C+Scott+R%3BConnolly%2C+H+C%2C+Jr%3BLauretta%2C+D+S%3BBottke%2C+W+F%3BAnonymous&rft.aulast=Messenger&rft.aufirst=Scott&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1904.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 13 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 7, 2015 N1 - Last updated - 2015-12-04 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - asteroids; B-type asteroids; Bennu Asteroid; carbonaceous chondrites; chondrites; CI chondrites; CM chondrites; meteorites; near-Earth asteroids; near-Earth objects; OSIRIS-REx Mission; parent bodies; regolith; remote sensing; sample return; stony meteorites ER - TY - JOUR T1 - Impact of the sample preparation on the organic compounds detected on Mars at JK and CB AN - 1739085000; 2015-116440 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Buch, Arnaud AU - Szopa, C AU - Freissinet, C AU - Glavin, D P AU - Coll, P AU - Cabane, M AU - Eigenbrode, J AU - Miller, K AU - Martin, M AU - Summons, R E AU - Archer, D AU - Brunner, A AU - Conrad, P AU - Teinturier, S AU - Coscia, D AU - Dworkin, J AU - Grotzinger, J AU - Mahaffy, P AU - McKay, C AU - Ming, D AU - Navarro-Gonzalez, R AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2886 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - chlorinated hydrocarbons KW - Sample Analysis at Mars experiment KW - experimental studies KW - gas chromatograms KW - mass spectra KW - Mars KW - terrestrial planets KW - planets KW - laboratory studies KW - sample preparation KW - organic compounds KW - detection KW - chromatograms KW - Curiosity Rover KW - Mars Science Laboratory KW - hydrocarbons KW - halogenated hydrocarbons KW - wet methods KW - spectra KW - aromatic hydrocarbons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1739085000?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+of+the+sample+preparation+on+the+organic+compounds+detected+on+Mars+at+JK+and+CB&rft.au=Buch%2C+Arnaud%3BSzopa%2C+C%3BFreissinet%2C+C%3BGlavin%2C+D+P%3BColl%2C+P%3BCabane%2C+M%3BEigenbrode%2C+J%3BMiller%2C+K%3BMartin%2C+M%3BSummons%2C+R+E%3BArcher%2C+D%3BBrunner%2C+A%3BConrad%2C+P%3BTeinturier%2C+S%3BCoscia%2C+D%3BDworkin%2C+J%3BGrotzinger%2C+J%3BMahaffy%2C+P%3BMcKay%2C+C%3BMing%2C+D%3BNavarro-Gonzalez%2C+R%3BAnonymous&rft.aulast=Buch&rft.aufirst=Arnaud&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2886.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 8 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on May 29, 2015 N1 - Last updated - 2015-12-04 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - aromatic hydrocarbons; chlorinated hydrocarbons; chromatograms; Curiosity Rover; detection; experimental studies; gas chromatograms; halogenated hydrocarbons; hydrocarbons; laboratory studies; Mars; Mars Science Laboratory; mass spectra; organic compounds; planets; Sample Analysis at Mars experiment; sample preparation; spectra; terrestrial planets; wet methods ER - TY - JOUR T1 - Remote analysis of regional lunar pyroclastic deposits; consistency and precision of LRO diviner estimates AN - 1739084960; 2015-116420 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Allen, Carlton C AU - Greenhagen, Benjamin T AU - Paige, D A AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2447 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - albedo KW - Christiansen KW - imagery KW - precision KW - volcanic rocks KW - impact features KW - Moon KW - Lunar Reconnaissance Orbiter KW - igneous rocks KW - Taurus-Littrow KW - statistical analysis KW - standard deviation KW - iron KW - pyroclastics KW - metals KW - impact craters KW - Diviner Lunar Radiometer Experiment KW - image analysis KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1739084960?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+analysis+of+regional+lunar+pyroclastic+deposits%3B+consistency+and+precision+of+LRO+diviner+estimates&rft.au=Allen%2C+Carlton+C%3BGreenhagen%2C+Benjamin+T%3BPaige%2C+D+A%3BAnonymous&rft.aulast=Allen&rft.aufirst=Carlton&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2447.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 9 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 19, 2015 N1 - Last updated - 2015-12-04 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - albedo; Christiansen; Diviner Lunar Radiometer Experiment; igneous rocks; image analysis; imagery; impact craters; impact features; iron; Lunar Reconnaissance Orbiter; metals; Moon; precision; pyroclastics; standard deviation; statistical analysis; Taurus-Littrow; volcanic rocks ER - TY - JOUR T1 - Radar derived shape model of binary near-Earth asteroid (285263) 1998 QE2 AN - 1739084662; 2015-116353 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Springmann, Alessondra AU - Taylor, P A AU - Howell, E S AU - Nolan, M C AU - Benner, L A M AU - Brozovic, M AU - Giorgini, J D AU - Margot, J L AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1313 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - near-Earth objects KW - density KW - asteroids KW - near-Earth asteroids KW - orbits KW - radar methods KW - binary asteroids KW - size KW - infrared spectra KW - eccentricity KW - models KW - Asteroid 1998 QE2 KW - rotation KW - thermal emission KW - spectra KW - satellites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1739084662?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+derived+shape+model+of+binary+near-Earth+asteroid+%28285263%29+1998+QE2&rft.au=Berger%2C+Eve+L%3BKeller%2C+L+P%3BAnonymous&rft.aulast=Berger&rft.aufirst=Eve&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1313.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 5 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 5, 2015 N1 - Last updated - 2015-12-04 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Asteroid 1998 QE2; asteroids; binary asteroids; density; eccentricity; infrared spectra; models; near-Earth asteroids; near-Earth objects; orbits; radar methods; rotation; satellites; size; spectra; thermal emission ER - TY - JOUR T1 - Exploring inflated pahoehoe lava flow morphologies and the effects of cooling using a new simulation approach AN - 1739084631; 2015-116387 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Glaze, Lori S AU - Baloga, Steve M AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1410 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Earth KW - lava flows KW - statistical analysis KW - Io Satellite KW - rates KW - mathematical models KW - Mars KW - landforms KW - Galilean satellites KW - thermal history KW - simulation KW - emplacement KW - terrestrial planets KW - morphology KW - planets KW - lava KW - volcanism KW - volume KW - cooling KW - volcanoes KW - probability KW - pahoehoe KW - satellites KW - 23:Geomorphology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1739084631?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+inflated+pahoehoe+lava+flow+morphologies+and+the+effects+of+cooling+using+a+new+simulation+approach&rft.au=Glaze%2C+Lori+S%3BBaloga%2C+Steve+M%3BAnonymous&rft.aulast=Glaze&rft.aufirst=Lori&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1410.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 12 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 11, 2015 N1 - Last updated - 2015-12-04 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - cooling; Earth; emplacement; Galilean satellites; Io Satellite; landforms; lava; lava flows; Mars; mathematical models; morphology; pahoehoe; planets; probability; rates; satellites; simulation; statistical analysis; terrestrial planets; thermal history; volcanism; volcanoes; volume ER - TY - JOUR T1 - Volcanic feature mapping in Mare Imbrium from Earth-based radar AN - 1739084435; 2015-116429 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Morgan, G A AU - Campbell, B A AU - Carter, L M AU - Hawke, B R AU - Campbell, D B AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2758 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Earth-based observations KW - lava flows KW - Moon KW - Lunar Reconnaissance Orbiter Camera KW - radar methods KW - mapping KW - ejecta KW - Copernicus Crater KW - volcanic features KW - Mare Imbrium KW - mosaics KW - titanium KW - metals KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1739084435?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Volcanic+feature+mapping+in+Mare+Imbrium+from+Earth-based+radar&rft.au=Morgan%2C+G+A%3BCampbell%2C+B+A%3BCarter%2C+L+M%3BHawke%2C+B+R%3BCampbell%2C+D+B%3BAnonymous&rft.aulast=Morgan&rft.aufirst=G&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2758.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 6 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 27, 2015 N1 - Last updated - 2015-12-04 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Copernicus Crater; Earth-based observations; ejecta; lava flows; Lunar Reconnaissance Orbiter Camera; mapping; Mare Imbrium; metals; Moon; mosaics; radar methods; regolith; titanium; volcanic features ER - TY - JOUR T1 - Regional geology of lunar spinel-rich units in Sinus Aestuum AN - 1739084372; 2015-116422 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Gaddis, L R AU - Sunshine, J AU - Petro, N AU - Hagerty, J AU - Skinner, J AU - Gaither, T AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2254 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Lunar Orbiter Laser Altimeter KW - volcanic rocks KW - igneous rocks KW - optical spectra KW - Lunar Reconnaissance Orbiter Camera KW - Chandrayaan-1 Mission KW - lunar highlands KW - volcanic features KW - Multiband Imager KW - volcanism KW - Moon Mineralogy Mapper KW - thickness KW - oxides KW - Fra Mauro KW - spectra KW - Sinus Aestuum KW - free-air anomalies KW - Moon KW - GRAIL Mission KW - spinel KW - maria KW - pyroclastics KW - Terrain Camera KW - eruptions KW - Kaguya Mission KW - spinel group KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1739084372?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Regional+geology+of+lunar+spinel-rich+units+in+Sinus+Aestuum&rft.au=Gaddis%2C+L+R%3BSunshine%2C+J%3BPetro%2C+N%3BHagerty%2C+J%3BSkinner%2C+J%3BGaither%2C+T%3BAnonymous&rft.aulast=Gaddis&rft.aufirst=L&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2254.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 24 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 19, 2015 N1 - Last updated - 2015-12-04 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Chandrayaan-1 Mission; eruptions; Fra Mauro; free-air anomalies; GRAIL Mission; igneous rocks; Kaguya Mission; lunar highlands; Lunar Orbiter Laser Altimeter; Lunar Reconnaissance Orbiter Camera; maria; Moon; Moon Mineralogy Mapper; Multiband Imager; optical spectra; oxides; pyroclastics; Sinus Aestuum; spectra; spinel; spinel group; Terrain Camera; thickness; volcanic features; volcanic rocks; volcanism ER - TY - JOUR T1 - An integrative approach to assessing habitability of H2 metabolisms in hydrothermal springs AN - 1739084345; 2015-116436 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Som, Sanjoy M AU - Fristad, K E AU - Hoehler, T M AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2828 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - calcium KW - magnesium KW - serpentinization KW - igneous rocks KW - aliphatic hydrocarbons KW - astrobiology KW - metasomatism KW - carbon dioxide KW - pyroxene group KW - plutonic rocks KW - clinopyroxene KW - water-rock interaction KW - springs KW - pH KW - chain silicates KW - water KW - alkaline earth metals KW - methane KW - metabolism KW - physicochemical properties KW - alkanes KW - equilibrium KW - ultramafics KW - hydration KW - organic compounds KW - habitability KW - metals KW - hydrogen KW - natural analogs KW - hydrocarbons KW - hot springs KW - microorganisms KW - 04:Extraterrestrial geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1739084345?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=An+integrative+approach+to+assessing+habitability+of+H2+metabolisms+in+hydrothermal+springs&rft.au=Som%2C+Sanjoy+M%3BFristad%2C+K+E%3BHoehler%2C+T+M%3BAnonymous&rft.aulast=Som&rft.aufirst=Sanjoy&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2828.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 6 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 29, 2015 N1 - Last updated - 2015-12-04 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkaline earth metals; alkanes; astrobiology; calcium; carbon dioxide; chain silicates; clinopyroxene; equilibrium; habitability; hot springs; hydration; hydrocarbons; hydrogen; igneous rocks; magnesium; metabolism; metals; metasomatism; methane; microorganisms; natural analogs; organic compounds; pH; physicochemical properties; plutonic rocks; pyroxene group; serpentinization; silicates; springs; ultramafics; water; water-rock interaction ER - TY - JOUR T1 - An update on the NASA Planetary Science Division research and analysis program AN - 1734269721; 2015-111458 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Richey, Christina R AU - Bernstein, M AU - Rall, J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2188 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - programs KW - planets KW - Planetary Science Division KW - extrasolar planets KW - NASA KW - government agencies KW - research KW - early solar system KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734269721?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=An+update+on+the+NASA+Planetary+Science+Division+research+and+analysis+program&rft.au=Richey%2C+Christina+R%3BBernstein%2C+M%3BRall%2C+J%3BAnonymous&rft.aulast=Richey&rft.aufirst=Christina&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2188.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - PubXState - TX N1 - SuppNotes - Accessed on Apr. 1, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - early solar system; extrasolar planets; government agencies; NASA; Planetary Science Division; planets; programs; research ER - TY - JOUR T1 - Phobos and Deimos and Mars Environment (PADME); a LADEE-derived mission to explore Mars's moons and the Martian orbital environment AN - 1734269687; 2015-111439 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Lee, Pascal AU - Bicay, Michael AU - Colaprete, Anthony AU - Elphic, Richard AU - Genova, Anthony AU - Hine, Butler AU - Horanyi, Mihaly AU - Jaroux, Belgacem AU - Korsmeyer, David AU - Lewis, Brian S AU - Worden, S Pete AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2288 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Phobos Satellite KW - bulk density KW - asteroids KW - clastic sediments KW - Mars KW - ejecta KW - cost KW - Phobos and Demos and Mars Environment Mission KW - exploration KW - terrestrial planets KW - planets KW - PADME Mission KW - neutron probe KW - dust KW - sediments KW - orbital observations KW - satellites KW - Deimos Satellite KW - regolith KW - instruments KW - cameras KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734269687?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Phobos+and+Deimos+and+Mars+Environment+%28PADME%29%3B+a+LADEE-derived+mission+to+explore+Mars%27s+moons+and+the+Martian+orbital+environment&rft.au=Lee%2C+Pascal%3BBicay%2C+Michael%3BColaprete%2C+Anthony%3BElphic%2C+Richard%3BGenova%2C+Anthony%3BHine%2C+Butler%3BHoranyi%2C+Mihaly%3BJaroux%2C+Belgacem%3BKorsmeyer%2C+David%3BLewis%2C+Brian+S%3BWorden%2C+S+Pete%3BAnonymous&rft.aulast=Lee&rft.aufirst=Pascal&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2288.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 19 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Mar. 31, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - asteroids; bulk density; cameras; clastic sediments; cost; Deimos Satellite; dust; ejecta; exploration; instruments; Mars; neutron probe; orbital observations; PADME Mission; Phobos and Demos and Mars Environment Mission; Phobos Satellite; planets; regolith; satellites; sediments; terrestrial planets ER - TY - JOUR T1 - Crystal stratigraphy of two basalts from Apollo 16; unique crystallization of picritic basalt 60603,10-16 and very-low titanium basalt 65703,9-13 AN - 1734269586; 2015-111520 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Donohue, P H AU - Neal, C R AU - Stevens, R E AU - Zeigler, R A AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2648 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - volcanic rocks KW - igneous rocks KW - mass spectra KW - olivine group KW - Apollo Program KW - Sample 60603 KW - melts KW - impact melts KW - Sample 65703 KW - olivine KW - basalts KW - orthosilicates KW - framework silicates KW - spectra KW - trace elements KW - chemical composition KW - picrite KW - plagioclase KW - Moon KW - textures KW - size KW - nesosilicates KW - ICP mass spectra KW - lunar samples KW - crystallization KW - feldspar group KW - regolith KW - Apollo 16 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734269586?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+stratigraphy+of+two+basalts+from+Apollo+16%3B+unique+crystallization+of+picritic+basalt+60603%2C10-16+and+very-low+titanium+basalt+65703%2C9-13&rft.au=Donohue%2C+P+H%3BNeal%2C+C+R%3BStevens%2C+R+E%3BZeigler%2C+R+A%3BAnonymous&rft.aulast=Donohue&rft.aufirst=P&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2648.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 13 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Apr. 10, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Apollo 16; Apollo Program; basalts; chemical composition; crystallization; feldspar group; framework silicates; ICP mass spectra; igneous rocks; impact melts; lunar samples; mass spectra; melts; Moon; nesosilicates; olivine; olivine group; orthosilicates; picrite; plagioclase; regolith; Sample 60603; Sample 65703; silicates; size; spectra; textures; trace elements; volcanic rocks ER - TY - JOUR T1 - Evidence for diurnally varying hydration at the Moon's equator from the Lunar Exploration Neutron Detector (LEND) AN - 1734269495; 2015-111509 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Livengood, T 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, T P AU - Sanin, A B AU - Starr, Richard D AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1507 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - water KW - in situ KW - equatorial region KW - Moon KW - Lunar Reconnaissance Orbiter KW - solar wind KW - Lunar Exploration Neutron Detector KW - hydroxyl ion KW - hydration KW - volatiles KW - hydrogen KW - diurnal variations KW - dehydration KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734269495?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+diurnally+varying+hydration+at+the+Moon%27s+equator+from+the+Lunar+Exploration+Neutron+Detector+%28LEND%29&rft.au=Livengood%2C+T+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+T+P%3BSanin%2C+A+B%3BStarr%2C+Richard+D%3BAnonymous&rft.aulast=Livengood&rft.aufirst=T&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1507.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 3 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Apr. 8, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - dehydration; diurnal variations; equatorial region; hydration; hydrogen; hydroxyl ion; in situ; Lunar Exploration Neutron Detector; Lunar Reconnaissance Orbiter; Moon; regolith; solar wind; volatiles; water ER - TY - JOUR T1 - Strategy for ranking the science value of the surface of asteroid 101955 Bennu for sample site selection for OSIRIS-REx AN - 1734269448; 2015-111445 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Nakamura-Messenger, Keiko AU - Connolly, H C, Jr AU - Lauretta, D S AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2023 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - stony meteorites KW - asteroids KW - near-Earth asteroids KW - sample return KW - OSIRIS-REx Mission KW - government agencies KW - Bennu Asteroid KW - mapping KW - metasomatism KW - temperature KW - meteorites KW - mineral composition KW - integrated science value map KW - hydrothermal alteration KW - chondrites KW - chemical composition KW - B-type asteroids KW - near-Earth objects KW - amorphous materials KW - parent bodies KW - carbonaceous chondrites KW - volatiles KW - organic compounds KW - NASA KW - regolith KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734269448?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Strategy+for+ranking+the+science+value+of+the+surface+of+asteroid+101955+Bennu+for+sample+site+selection+for+OSIRIS-REx&rft.au=Nakamura-Messenger%2C+Keiko%3BConnolly%2C+H+C%2C+Jr%3BLauretta%2C+D+S%3BAnonymous&rft.aulast=Nakamura-Messenger&rft.aufirst=Keiko&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2023.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 8 N1 - PubXState - TX N1 - SuppNotes - Accessed on Apr. 1, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - amorphous materials; asteroids; B-type asteroids; Bennu Asteroid; carbonaceous chondrites; chemical composition; chondrites; government agencies; hydrothermal alteration; instruments; integrated science value map; mapping; metasomatism; meteorites; mineral composition; NASA; near-Earth asteroids; near-Earth objects; organic compounds; OSIRIS-REx Mission; parent bodies; regolith; sample return; silicates; stony meteorites; temperature; volatiles ER - TY - JOUR T1 - Unusual microtopography on an Apollo 12 soil grain AN - 1734269409; 2015-111496 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Thomas-Keprta, K L AU - Keprta, N T AU - Clemett, S J AU - Berger, E L AU - Rahman, Z AU - McKay, D S AU - Gibson, E K AU - Wentworth, S J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2681 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - irradiation KW - Moon KW - textures KW - Sample 12070 KW - electron microscopy data KW - Apollo Program KW - impacts KW - aqueous alteration KW - focused ion beam KW - topography KW - Apollo 12 KW - SEM data KW - lunar soils KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734269409?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Unusual+microtopography+on+an+Apollo+12+soil+grain&rft.au=Thomas-Keprta%2C+K+L%3BKeprta%2C+N+T%3BClemett%2C+S+J%3BBerger%2C+E+L%3BRahman%2C+Z%3BMcKay%2C+D+S%3BGibson%2C+E+K%3BWentworth%2C+S+J%3BAnonymous&rft.aulast=Thomas-Keprta&rft.aufirst=K&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2681.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 17 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Apr. 7, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Apollo 12; Apollo Program; aqueous alteration; electron microscopy data; focused ion beam; impacts; irradiation; lunar soils; Moon; Sample 12070; SEM data; textures; topography ER - TY - JOUR T1 - Neutron remote-sensing at the Moon; modeling the empirical variation with altitude of neutron flux for the Lunar Exploration Neutron Detector (LEND) AN - 1734269149; 2015-111508 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Livengood, T A AU - Boynton, W V AU - Chin, G AU - Evans, L G AU - Litvak, M L AU - McClanahan, T P AU - Mitrofanov, I G AU - Sagdeev, R Z AU - Sanin, A B AU - Starr, Richard D AU - Su, J J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2592 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - water KW - models KW - neutrons KW - Moon KW - Lunar Reconnaissance Orbiter KW - hydrogen KW - altitude KW - permanently shadowed regions KW - Lunar Exploration Neutron Detector KW - orbital observations KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734269149?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+remote-sensing+at+the+Moon%3B+modeling+the+empirical+variation+with+altitude+of+neutron+flux+for+the+Lunar+Exploration+Neutron+Detector+%28LEND%29&rft.au=Livengood%2C+T+A%3BBoynton%2C+W+V%3BChin%2C+G%3BEvans%2C+L+G%3BLitvak%2C+M+L%3BMcClanahan%2C+T+P%3BMitrofanov%2C+I+G%3BSagdeev%2C+R+Z%3BSanin%2C+A+B%3BStarr%2C+Richard+D%3BSu%2C+J+J%3BAnonymous&rft.aulast=Livengood&rft.aufirst=T&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2592.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 3 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Apr. 8, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - altitude; hydrogen; Lunar Exploration Neutron Detector; Lunar Reconnaissance Orbiter; models; Moon; neutrons; orbital observations; permanently shadowed regions; remote sensing; water ER - TY - JOUR T1 - Sensitivity to fine structure of neutron supression in lunar polar regions AN - 1734269131; 2015-111503 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Su, J J AU - Sagdeev, R Z AU - Boynton, W V AU - Chin, G AU - Evans, L G AU - Litvak, M L AU - Livengood, T A AU - McClanahan, T P AU - Mitrofanov, I G AU - Murray, J AU - Sanin, A B AU - Starr, Richard D AU - Usikov, D AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2329 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - water KW - polar regions KW - Moon KW - Lunar Reconnaissance Orbiter KW - Cabeus Crater KW - data processing KW - Lunar Exploration Neutron Detector KW - epithermal neturons KW - volatiles KW - Shoemaker Crater KW - detection KW - neutrons KW - deconvolution KW - hydrogen KW - permanently shadowed regions KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734269131?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Sensitivity+to+fine+structure+of+neutron+supression+in+lunar+polar+regions&rft.au=Su%2C+J+J%3BSagdeev%2C+R+Z%3BBoynton%2C+W+V%3BChin%2C+G%3BEvans%2C+L+G%3BLitvak%2C+M+L%3BLivengood%2C+T+A%3BMcClanahan%2C+T+P%3BMitrofanov%2C+I+G%3BMurray%2C+J%3BSanin%2C+A+B%3BStarr%2C+Richard+D%3BUsikov%2C+D%3BAnonymous&rft.aulast=Su&rft.aufirst=J&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2329.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 2 N1 - PubXState - TX N1 - SuppNotes - Accessed on Apr. 7, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Cabeus Crater; data processing; deconvolution; detection; epithermal neturons; hydrogen; Lunar Exploration Neutron Detector; Lunar Reconnaissance Orbiter; Moon; neutrons; permanently shadowed regions; polar regions; regolith; Shoemaker Crater; volatiles; water ER - TY - JOUR T1 - Progress towards a global digital elevation model for Mercury AN - 1734269030; 2015-111461 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Becker, Kris J AU - Becker, Tammy L AU - Edmundson, Kenneth L AU - Gaskel, Robert W AU - McNutt, Ralph L, Jr AU - Murchie, Scott L AU - Neumann, Gregory A AU - Perry, Mark E AU - Prockter, Louise M AU - Robinson, Mark S AU - Solomon, Sean C AU - Stephens, Grant K AU - Turner, F Scott AU - Weller, Lynn A AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2243 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - imagery KW - Mercury Dual Imaging System KW - global KW - elevation KW - data processing KW - mapping KW - interpolation KW - digital terrain models KW - triangulation KW - temperature KW - terrestrial planets KW - spherical harmonic analysis KW - planets KW - topography KW - Mercury Planet KW - surface features KW - orbital observations KW - Mercury Laser Altimeter KW - corrections KW - MESSENGER Mission KW - filters KW - radio frequency occulations KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734269030?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Progress+towards+a+global+digital+elevation+model+for+Mercury&rft.au=Becker%2C+Kris+J%3BBecker%2C+Tammy+L%3BEdmundson%2C+Kenneth+L%3BGaskel%2C+Robert+W%3BMcNutt%2C+Ralph+L%2C+Jr%3BMurchie%2C+Scott+L%3BNeumann%2C+Gregory+A%3BPerry%2C+Mark+E%3BProckter%2C+Louise+M%3BRobinson%2C+Mark+S%3BSolomon%2C+Sean+C%3BStephens%2C+Grant+K%3BTurner%2C+F+Scott%3BWeller%2C+Lynn+A%3BAnonymous&rft.aulast=Becker&rft.aufirst=Kris&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2243.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 11 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Apr. 1, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - corrections; data processing; digital terrain models; elevation; filters; global; imagery; interpolation; mapping; Mercury Dual Imaging System; Mercury Laser Altimeter; Mercury Planet; MESSENGER Mission; orbital observations; planets; radio frequency occulations; spherical harmonic analysis; surface features; temperature; terrestrial planets; topography; triangulation ER - TY - JOUR T1 - Illumination conditions at the poles of the Moon and Mercury, and application to data analysis AN - 1734268974; 2015-111504 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Mazarico, Erwan AU - Nicholas, Joseph B AU - Neumann, Gregory A AU - Smith, David E AU - Zuber, Maria T AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1867 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Lunar Orbiter Laser Altimeter KW - polar regions KW - Moon KW - Lunar Reconnaissance Orbiter KW - calibration KW - ultraviolet radiation KW - terrestrial planets KW - models KW - planets KW - topography KW - neutrons KW - electromagnetic radiation KW - stars KW - permanently shadowed regions KW - Mercury Planet KW - Lyman Alpha Mapping Project KW - insolation KW - Mercury Laser Altimeter KW - illumination KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734268974?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Illumination+conditions+at+the+poles+of+the+Moon+and+Mercury%2C+and+application+to+data+analysis&rft.au=Mazarico%2C+Erwan%3BNicholas%2C+Joseph+B%3BNeumann%2C+Gregory+A%3BSmith%2C+David+E%3BZuber%2C+Maria+T%3BAnonymous&rft.aulast=Mazarico&rft.aufirst=Erwan&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1867.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 13 N1 - PubXState - TX N1 - Document feature - sketch maps N1 - SuppNotes - Accessed on Apr. 7, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - calibration; electromagnetic radiation; illumination; insolation; Lunar Orbiter Laser Altimeter; Lunar Reconnaissance Orbiter; Lyman Alpha Mapping Project; Mercury Laser Altimeter; Mercury Planet; models; Moon; neutrons; permanently shadowed regions; planets; polar regions; stars; terrestrial planets; topography; ultraviolet radiation ER - TY - JOUR T1 - Solar wind implantation into lunar regolith; H retention in a surface with defects AN - 1734268750; 2015-111507 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Farrell, W M AU - Hurley, D M AU - Zimmermann, M I AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2039 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Moon KW - Monte Carlo analysis KW - statistical analysis KW - solar wind KW - rates KW - protons KW - simulation KW - defects KW - temperature KW - activation energy KW - hydrogen KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734268750?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Solar+wind+implantation+into+lunar+regolith%3B+H+retention+in+a+surface+with+defects&rft.au=Farrell%2C+W+M%3BHurley%2C+D+M%3BZimmermann%2C+M+I%3BAnonymous&rft.aulast=Farrell&rft.aufirst=W&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2039.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 4 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Apr. 8, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - activation energy; defects; hydrogen; Monte Carlo analysis; Moon; protons; rates; regolith; simulation; solar wind; statistical analysis; temperature ER - TY - JOUR T1 - Nanoscale compositional relations in lunar rock patina; deciphering sources for patina components on an Apollo 17 Station 6 boulder AN - 1734268654; 2015-111492 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Christoffersen, Roy AU - Noble, Sarah K AU - Keller, Lindsay P AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1939 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - magnesium KW - Apollo Program KW - Station 6 KW - iron KW - major elements KW - sediments KW - spectra KW - chemical composition KW - alkaline earth metals KW - boulders KW - Moon KW - clastic sediments KW - Sample 76015 KW - electron microscopy data KW - X-ray spectra KW - weathering KW - TEM data KW - EDS spectra KW - space weathering KW - lunar samples KW - patina KW - metals KW - nanoparticles KW - regolith KW - Apollo 17 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734268654?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Nanoscale+compositional+relations+in+lunar+rock+patina%3B+deciphering+sources+for+patina+components+on+an+Apollo+17+Station+6+boulder&rft.au=Christoffersen%2C+Roy%3BNoble%2C+Sarah+K%3BKeller%2C+Lindsay+P%3BAnonymous&rft.aulast=Christoffersen&rft.aufirst=Roy&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1939.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 12 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Apr. 7, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alkaline earth metals; Apollo 17; Apollo Program; boulders; chemical composition; clastic sediments; EDS spectra; electron microscopy data; iron; lunar samples; magnesium; major elements; metals; Moon; nanoparticles; patina; regolith; Sample 76015; sediments; space weathering; spectra; Station 6; TEM data; weathering; X-ray spectra ER - TY - JOUR T1 - Radioelements on Vesta; an update AN - 1734266853; 2015-108161 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Prettyman, T H AU - Yamashita, N AU - Reedy, R C AU - McSween, H Y AU - Mittlefehldt, D W AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2565 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - stony meteorites KW - asteroids KW - detection limit KW - refractory materials KW - data processing KW - mapping KW - Dawn Mission KW - meteorites KW - volatile elements KW - gamma-ray spectra KW - spectra KW - orbital observations KW - basaltic composition KW - GRaND KW - Vesta Asteroid KW - parent bodies KW - HED meteorites KW - alkali metals KW - achondrites KW - Gamma Ray and Neutron Detector KW - metals KW - potassium KW - thorium KW - eucrite 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/1734266853?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Radioelements+on+Vesta%3B+an+update&rft.au=Prettyman%2C+T+H%3BYamashita%2C+N%3BReedy%2C+R+C%3BMcSween%2C+H+Y%3BMittlefehldt%2C+D+W%3BAnonymous&rft.aulast=Prettyman&rft.aufirst=T&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2565.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 21 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Jun. 8, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; actinides; alkali metals; asteroids; basaltic composition; data processing; Dawn Mission; detection limit; eucrite; Gamma Ray and Neutron Detector; gamma-ray spectra; GRaND; HED meteorites; mapping; metals; meteorites; orbital observations; parent bodies; potassium; refractory materials; spectra; stony meteorites; thorium; Vesta Asteroid; volatile elements ER - TY - JOUR T1 - Spectral observations of comets C/2012 S1 (ISON) and 2P/Encke obtained by MESSENGER AN - 1734266780; 2015-108213 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Vervack, Ronald J, Jr AU - Merkel, Aimee W AU - McClintock, William E AU - Holsclaw, Gregory M AU - Izenberg, Noam R AU - Nittler, Larry R AU - Starr, Richard D AU - Solomon, Sean C AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2553 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Oort Cloud KW - oxygen KW - Mercury Atmospheric and Surface Composition Spectrometer KW - optical spectra KW - Comet ISON KW - Encke Comet KW - X-ray spectra KW - comae KW - terrestrial planets KW - planets KW - hydroxyl ion KW - carbon monoxide KW - comets KW - ice KW - hydrogen KW - carbon KW - Mercury Planet KW - ultraviolet spectra KW - sulfur KW - spectra 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/1734266780?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Spectral+observations+of+comets+C%2F2012+S1+%28ISON%29+and+2P%2FEncke+obtained+by+MESSENGER&rft.au=Vervack%2C+Ronald+J%2C+Jr%3BMerkel%2C+Aimee+W%3BMcClintock%2C+William+E%3BHolsclaw%2C+Gregory+M%3BIzenberg%2C+Noam+R%3BNittler%2C+Larry+R%3BStarr%2C+Richard+D%3BSolomon%2C+Sean+C%3BAnonymous&rft.aulast=Vervack&rft.aufirst=Ronald&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2553.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 1 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Jun. 12, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - carbon; carbon monoxide; comae; Comet ISON; comets; Encke Comet; hydrogen; hydroxyl ion; ice; Mercury Atmospheric and Surface Composition Spectrometer; Mercury Planet; MErcury Surface, Space ENvironment, GEochemistry, and Ranging Mission; MESSENGER Mission; Oort Cloud; optical spectra; oxygen; planets; spectra; sulfur; terrestrial planets; ultraviolet spectra; X-ray spectra ER - TY - JOUR T1 - Mineralogical variation of Chelyabinsk with depth from the surface of the parent meteoroid AN - 1734266561; 2015-108186 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Yoshida, S AU - Mikouchi, T AU - Nagao, K AU - Haba, M K AU - Hasegawa, H AU - Komatsu, M AU - Zolensky, M E AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2509 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - ordinary chondrites KW - stony meteorites KW - olivine group KW - meteoroids KW - melts KW - burial KW - Chelyabinsk Meteorite KW - meteorites KW - impact melts KW - pyroxene group KW - mineral composition KW - noble gases KW - olivine KW - orthosilicates KW - framework silicates KW - heterogeneity KW - chondrites KW - chain silicates KW - plagioclase KW - parent bodies KW - LL chondrites KW - metamorphism KW - depth KW - nesosilicates 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/1734266561?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Mineralogical+variation+of+Chelyabinsk+with+depth+from+the+surface+of+the+parent+meteoroid&rft.au=Yoshida%2C+S%3BMikouchi%2C+T%3BNagao%2C+K%3BHaba%2C+M+K%3BHasegawa%2C+H%3BKomatsu%2C+M%3BZolensky%2C+M+E%3BAnonymous&rft.aulast=Yoshida&rft.aufirst=T&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2509.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 4 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on Jun. 9, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - burial; chain silicates; Chelyabinsk Meteorite; chondrites; depth; feldspar group; framework silicates; heterogeneity; impact melts; LL chondrites; melts; metamorphism; meteorites; meteoroids; mineral composition; nesosilicates; noble gases; olivine; olivine group; ordinary chondrites; orthosilicates; parent bodies; plagioclase; pyroxene group; shock metamorphism; silicates; stony meteorites ER - TY - JOUR T1 - Apatite in Allan Hills 81005 and the origin of water in the lunar magma ocean AN - 1734266075; 2015-111514 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Robinson, K L AU - Barnes, J J AU - Tartese, R AU - Hallis, L J AU - Franchi, I A AU - Anand, Mahesh AU - Taylor, G J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2413 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - stony meteorites KW - ion probe data KW - isotopes KW - igneous rocks KW - mass spectra KW - stable isotopes KW - iron KW - meteorites KW - plutonic rocks KW - water content KW - spectra KW - water KW - apatite KW - magma oceans KW - Moon KW - isotope ratios KW - phosphates KW - achondrites KW - anorthosite KW - ALHA 81005 KW - Allan Hills Meteorites KW - Antarctica KW - D/H KW - metals KW - magmas KW - hydrogen KW - NanoSIMS KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734266075?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Apatite+in+Allan+Hills+81005+and+the+origin+of+water+in+the+lunar+magma+ocean&rft.au=Robinson%2C+K+L%3BBarnes%2C+J+J%3BTartese%2C+R%3BHallis%2C+L+J%3BFranchi%2C+I+A%3BAnand%2C+Mahesh%3BTaylor%2C+G+J%3BAnonymous&rft.aulast=Robinson&rft.aufirst=K&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2413.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 22 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Apr. 10, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; ALHA 81005; Allan Hills Meteorites; anorthosite; Antarctica; apatite; D/H; hydrogen; igneous rocks; ion probe data; iron; isotope ratios; isotopes; magma oceans; magmas; mass spectra; metals; meteorites; Moon; NanoSIMS; phosphates; plutonic rocks; spectra; stable isotopes; stony meteorites; water; water content ER - TY - JOUR T1 - Analysis of magnetic field data from third Mariner 10 flyby of Mercury; comparison with MESSENGER data and constraints on secular variation AN - 1734266062; 2015-111460 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Philpott, Lydia C AU - Johnson, Catherine L AU - Winslow, Reka M AU - Anderson, Brian J AU - Korth, Haje AU - Purucker, Michael E AU - Solomon, Sean C AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1169 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - secular variations KW - dynamos KW - Mariner 10 KW - MErcury SUrface, Space ENvironment, GEochemistry, and Ranging Mission KW - magnetometers KW - magnetic field KW - terrestrial planets KW - planets KW - flybys KW - Mercury Planet KW - Mariner Program KW - orbital observations KW - MESSENGER Mission KW - dipole moment KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734266062?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Analysis+of+magnetic+field+data+from+third+Mariner+10+flyby+of+Mercury%3B+comparison+with+MESSENGER+data+and+constraints+on+secular+variation&rft.au=Philpott%2C+Lydia+C%3BJohnson%2C+Catherine+L%3BWinslow%2C+Reka+M%3BAnderson%2C+Brian+J%3BKorth%2C+Haje%3BPurucker%2C+Michael+E%3BSolomon%2C+Sean+C%3BAnonymous&rft.aulast=Philpott&rft.aufirst=Lydia&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1169.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 8 N1 - PubXState - TX N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - dipole moment; dynamos; flybys; magnetic field; magnetometers; Mariner 10; Mariner Program; Mercury Planet; MErcury SUrface, Space ENvironment, GEochemistry, and Ranging Mission; MESSENGER Mission; orbital observations; planets; secular variations; terrestrial planets ER - TY - JOUR T1 - Estimation of hydrogen concentration in lunar south polar regions AN - 1734266057; 2015-111499 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 - Boynton, W V AU - Chin, G AU - Evans, L G AU - Golovin, D V AU - Harshman, K AU - Livengood, T A AU - McClanahan, T P AU - Malakhov, A V AU - Mokrousov, M I AU - Sagdeev, R Z AU - Starr, Richard D AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1358 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Lunar Orbiter Laser Altimeter KW - concentration KW - polar regions KW - Moon KW - Lunar Reconnaissance Orbiter KW - Cabeus Crater KW - mapping KW - Lunar Exploration Neutron Detector KW - Haworth Crater KW - depth KW - topography KW - Shoemaker Crater KW - neutrons KW - hydrogen KW - permanently shadowed regions KW - orbital observations KW - Diviner Lunar Radiometer Experiment KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734266057?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+hydrogen+concentration+in+lunar+south+polar+regions&rft.au=Sanin%2C+A+B%3BMitrofanov%2C+I+G%3BLitvak%2C+M+L%3BBoynton%2C+W+V%3BChin%2C+G%3BEvans%2C+L+G%3BGolovin%2C+D+V%3BHarshman%2C+K%3BLivengood%2C+T+A%3BMcClanahan%2C+T+P%3BMalakhov%2C+A+V%3BMokrousov%2C+M+I%3BSagdeev%2C+R+Z%3BStarr%2C+Richard+D%3BAnonymous&rft.aulast=Sanin&rft.aufirst=A&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1358.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 5 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Apr. 7, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Cabeus Crater; concentration; depth; Diviner Lunar Radiometer Experiment; Haworth Crater; hydrogen; Lunar Exploration Neutron Detector; Lunar Orbiter Laser Altimeter; Lunar Reconnaissance Orbiter; mapping; Moon; neutrons; orbital observations; permanently shadowed regions; polar regions; regolith; Shoemaker Crater; topography ER - TY - JOUR T1 - LIFE; Enceladus plume sample return via Discovery AN - 1734265964; 2015-111454 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Tsou, Peter AU - Anbar, Ariel AU - Atwegg, Kathrin AU - Baross, John AU - Brownlee, Donald AU - Dissly, Richard AU - Glavin, Daniel AU - Glein, Christopher AU - Kanik, Isik AU - McKay, Christopher AU - Porco, Carolyn AU - Sekine, Yasuhito AU - Takai, Ken AU - Takano, Yoshinori AU - Williams, Peter AU - Yano, Hajime AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2192 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - water KW - icy satellites KW - plumes KW - in situ KW - asteroids KW - Stardust Mission KW - sample return KW - government agencies KW - astrobiology KW - concepts KW - curation KW - organic compounds KW - Life Investigation for Enceladus Mission KW - Hayabusa 1 Mission KW - Cassini-Huygens Mission KW - comets KW - habitability KW - Discovery-class mission KW - NASA KW - geysers KW - Enceladus Satellite KW - satellites KW - microorganisms KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734265964?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=LIFE%3B+Enceladus+plume+sample+return+via+Discovery&rft.au=Tsou%2C+Peter%3BAnbar%2C+Ariel%3BAtwegg%2C+Kathrin%3BBaross%2C+John%3BBrownlee%2C+Donald%3BDissly%2C+Richard%3BGlavin%2C+Daniel%3BGlein%2C+Christopher%3BKanik%2C+Isik%3BMcKay%2C+Christopher%3BPorco%2C+Carolyn%3BSekine%2C+Yasuhito%3BTakai%2C+Ken%3BTakano%2C+Yoshinori%3BWilliams%2C+Peter%3BYano%2C+Hajime%3BAnonymous&rft.aulast=Tsou&rft.aufirst=Peter&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2192.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 10 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Apr. 1, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - asteroids; astrobiology; Cassini-Huygens Mission; comets; concepts; curation; Discovery-class mission; Enceladus Satellite; geysers; government agencies; habitability; Hayabusa 1 Mission; icy satellites; in situ; Life Investigation for Enceladus Mission; microorganisms; NASA; organic compounds; plumes; sample return; satellites; Stardust Mission; water ER - TY - JOUR T1 - A coordinated focused ion beam/ultramicrotomy technique for serial sectioning of Hayabusa particles and other returned samples AN - 1734265253; 2015-108205 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Berger, Eve L AU - Keller, L P AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1485 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - transmission electron microscopy KW - methods KW - Itokawa Asteroid KW - in situ KW - asteroids KW - techniques KW - electron microscopy data KW - samples KW - ultramicrotomy KW - sample preparation KW - Hayabusa Mission KW - particulate materials KW - scanning electron microscopy KW - electron microscopy KW - SEM data KW - particles KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734265253?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=A+coordinated+focused+ion+beam%2Fultramicrotomy+technique+for+serial+sectioning+of+Hayabusa+particles+and+other+returned+samples&rft.au=Berger%2C+Eve+L%3BKeller%2C+L+P%3BAnonymous&rft.aulast=Berger&rft.aufirst=Eve&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1485.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 2 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Jun. 12, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - asteroids; electron microscopy; electron microscopy data; Hayabusa Mission; in situ; Itokawa Asteroid; methods; particles; particulate materials; sample preparation; samples; scanning electron microscopy; SEM data; techniques; transmission electron microscopy; ultramicrotomy ER - TY - JOUR T1 - Ar-Ar analysis of Chelyabinsk; evidence for a recent impact AN - 1734264732; 2015-108181 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Beard, S P AU - Kring, D A AU - Isachsen, C E AU - Lapen, T J AU - Zolensky, M E AU - Swindle, T D AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1807 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Ar/Ar KW - ordinary chondrites KW - U/Pb KW - stony meteorites KW - LL chondrites KW - clasts KW - isochrons KW - impacts KW - thermal history KW - metamorphism KW - melts KW - Chelyabinsk Meteorite KW - meteorites KW - impact melts KW - chronology KW - Sm/Nd KW - dates KW - absolute age KW - thermochronology KW - heating KW - chondrites KW - shock metamorphism KW - 05B:Petrology of meteorites and tektites KW - 03:Geochronology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734264732?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Ar-Ar+analysis+of+Chelyabinsk%3B+evidence+for+a+recent+impact&rft.au=Beard%2C+S+P%3BKring%2C+D+A%3BIsachsen%2C+C+E%3BLapen%2C+T+J%3BZolensky%2C+M+E%3BSwindle%2C+T+D%3BAnonymous&rft.aulast=Beard&rft.aufirst=S&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1807.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 12 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Jun. 9, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - absolute age; Ar/Ar; Chelyabinsk Meteorite; chondrites; chronology; clasts; dates; heating; impact melts; impacts; isochrons; LL chondrites; melts; metamorphism; meteorites; ordinary chondrites; shock metamorphism; Sm/Nd; stony meteorites; thermal history; thermochronology; U/Pb ER - TY - JOUR T1 - Ureilite thin section preparation AN - 1734264484; 2015-108154 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Harrington, R AU - Righter, K AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1103 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - meteorites KW - laboratory studies KW - sample preparation KW - stony meteorites KW - diamond KW - techniques KW - native elements KW - ureilite KW - thin sections KW - nanoparticles KW - achondrites KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734264484?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Ureilite+thin+section+preparation&rft.au=Harrington%2C+R%3BRighter%2C+K%3BAnonymous&rft.aulast=Harrington&rft.aufirst=R&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1103.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 2 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Jun. 8, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; diamond; laboratory studies; meteorites; nanoparticles; native elements; sample preparation; stony meteorites; techniques; thin sections; ureilite ER - TY - JOUR T1 - Mineralogy and crystallography of some Itokawa particles returned by the Hayabusa Mission AN - 1734264467; 2015-108204 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Mikouchi, T AU - Komatsu, M AU - Hagiya, K AU - Ohsumi, K AU - Zolensky, M AU - Hoffmann, V AU - Martinez, J AU - Hochleitner, R AU - Kaliwoda, M AU - Terada, Y AU - Yagi, N AU - Takata, M AU - Satake, W AU - Aoyagi, Y AU - Takenouchi, A AU - Karouji, Y AU - Uesugi, M AU - Yada, T AU - Miyamoto, M AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2239 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - ordinary chondrites KW - stony meteorites KW - asteroids KW - X-ray diffraction data KW - olivine group KW - electron probe data KW - XANES spectra KW - synchrotron radiation KW - meteorites KW - mineral composition KW - Hayabusa Mission KW - olivine KW - orthosilicates KW - framework silicates KW - spectra KW - chondrites KW - plagioclase KW - Itokawa Asteroid KW - LL chondrites KW - electron microscopy data KW - metamorphism KW - X-ray spectra KW - nesosilicates KW - Raman spectra KW - feldspar group KW - shock metamorphism KW - SEM data KW - particles KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734264467?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Mineralogy+and+crystallography+of+some+Itokawa+particles+returned+by+the+Hayabusa+Mission&rft.au=Mikouchi%2C+T%3BKomatsu%2C+M%3BHagiya%2C+K%3BOhsumi%2C+K%3BZolensky%2C+M%3BHoffmann%2C+V%3BMartinez%2C+J%3BHochleitner%2C+R%3BKaliwoda%2C+M%3BTerada%2C+Y%3BYagi%2C+N%3BTakata%2C+M%3BSatake%2C+W%3BAoyagi%2C+Y%3BTakenouchi%2C+A%3BKarouji%2C+Y%3BUesugi%2C+M%3BYada%2C+T%3BMiyamoto%2C+M%3BAnonymous&rft.aulast=Mikouchi&rft.aufirst=T&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2239.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 12 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on Jun. 9, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - asteroids; chondrites; electron microscopy data; electron probe data; feldspar group; framework silicates; Hayabusa Mission; Itokawa Asteroid; LL chondrites; metamorphism; meteorites; mineral composition; nesosilicates; olivine; olivine group; ordinary chondrites; orthosilicates; particles; plagioclase; Raman spectra; SEM data; shock metamorphism; silicates; spectra; stony meteorites; synchrotron radiation; X-ray diffraction data; X-ray spectra; XANES spectra ER - TY - JOUR T1 - Effects of varying proportions of glass on reflectance spectra of HED polymict breccias AN - 1734264287; 2015-108156 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Buchanan, P C AU - Reddy, V AU - Cloutis, E A AU - Mann, P AU - Le Corre, L AU - Le, L AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1525 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - breccia KW - stony meteorites KW - EET 87503 KW - HED meteorites KW - Elephant Moraine Meteorites KW - achondrites KW - meteorites KW - laboratory studies KW - howardite KW - mixing KW - spectra KW - reflectance KW - polymict breccia KW - glass materials KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734264287?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Effects+of+varying+proportions+of+glass+on+reflectance+spectra+of+HED+polymict+breccias&rft.au=Buchanan%2C+P+C%3BReddy%2C+V%3BCloutis%2C+E+A%3BMann%2C+P%3BLe+Corre%2C+L%3BLe%2C+L%3BAnonymous&rft.aulast=Buchanan&rft.aufirst=P&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1525.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 8 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Jun. 8, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; breccia; EET 87503; Elephant Moraine Meteorites; glass materials; HED meteorites; howardite; laboratory studies; meteorites; mixing; polymict breccia; reflectance; spectra; stony meteorites ER - TY - JOUR T1 - The volatile composition and taxonomy of comets C 2009/P1 (Garradd) and 103P/Hartley 2 from ground-based radio observations AN - 1734264278; 2015-108216 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Gicquel, Adeline AU - Milam, Stefanie N AU - Cordiner, Martin A AU - Villanueva, Geronimo AU - Charnley, Steven B AU - Coulson, Iain AU - Remijan, Anthony AU - DiSanti, Michael A AU - Bonev, Bencho P AU - Kuan, Yi-Jehng AU - Chuang, Yo-Ling AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1957 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Garradd Comet KW - telescope methods KW - isotopes KW - isotope ratios KW - ground methods KW - stable isotopes KW - methanol KW - carbon monoxide KW - volatiles KW - organic compounds KW - Hartley 2 Comet KW - comets KW - D/H KW - hydrogen KW - radio-wave methods KW - alcohols KW - periodicity KW - hydrogen cyanide KW - spectra KW - cyanides KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734264278?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+volatile+composition+and+taxonomy+of+comets+C+2009%2FP1+%28Garradd%29+and+103P%2FHartley+2+from+ground-based+radio+observations&rft.au=Gicquel%2C+Adeline%3BMilam%2C+Stefanie+N%3BCordiner%2C+Martin+A%3BVillanueva%2C+Geronimo%3BCharnley%2C+Steven+B%3BCoulson%2C+Iain%3BRemijan%2C+Anthony%3BDiSanti%2C+Michael+A%3BBonev%2C+Bencho+P%3BKuan%2C+Yi-Jehng%3BChuang%2C+Yo-Ling%3BAnonymous&rft.aulast=Gicquel&rft.aufirst=Adeline&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1957.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 20 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Jun. 15, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alcohols; carbon monoxide; comets; cyanides; D/H; Garradd Comet; ground methods; Hartley 2 Comet; hydrogen; hydrogen cyanide; isotope ratios; isotopes; methanol; organic compounds; periodicity; radio-wave methods; spectra; stable isotopes; telescope methods; volatiles ER - TY - JOUR T1 - Thermal emission photometry of three near-Earth asteroids in L' and M' AN - 1734264116; 2015-108218 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Lim, Lucy F AU - Moskovitz, Nicholas A AU - Thomas, Cristina AU - Howell, Ellen AU - Emery, Josh AU - Benner, Lance AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1695 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - spectrophotometry KW - near-Earth objects KW - thermal inertia KW - asteroids KW - telescope methods KW - near-Earth asteroids KW - radar methods KW - temperature KW - photometry KW - natural hazards KW - thermal emission KW - S-type asteroids KW - reflectance KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1734264116?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+photometry+of+three+near-Earth+asteroids+in+L%27+and+M%27&rft.au=Lim%2C+Lucy+F%3BMoskovitz%2C+Nicholas+A%3BThomas%2C+Cristina%3BHowell%2C+Ellen%3BEmery%2C+Josh%3BBenner%2C+Lance%3BAnonymous&rft.aulast=Lim&rft.aufirst=Lucy&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1695.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 8 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on Jun. 15, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - asteroids; natural hazards; near-Earth asteroids; near-Earth objects; photometry; radar methods; reflectance; S-type asteroids; spectrophotometry; telescope methods; temperature; thermal emission; thermal inertia ER - TY - JOUR T1 - LunarCubes; application of the CubeSat paradigm to lunar missions AN - 1703687128; 2015-077837 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Clark, Pamela E AU - MacDowall, R AU - Reuter, D AU - Mauk, R AU - Patel, D AU - Hudeck, J AU - Altunc, S AU - Mentzel, E AU - Hernandez, A AU - Farrell, W M AU - Cox, R AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1049 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - water KW - polar regions KW - technology KW - Lunar Water Distribution mission KW - development KW - Moon KW - government agencies KW - satellite methods KW - concepts KW - CubeSat Mission KW - L-WaDi KW - NASA KW - LunarCube KW - design KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703687128?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=LunarCubes%3B+application+of+the+CubeSat+paradigm+to+lunar+missions&rft.au=Clark%2C+Pamela+E%3BMacDowall%2C+R%3BReuter%2C+D%3BMauk%2C+R%3BPatel%2C+D%3BHudeck%2C+J%3BAltunc%2C+S%3BMentzel%2C+E%3BHernandez%2C+A%3BFarrell%2C+W+M%3BCox%2C+R%3BAnonymous&rft.aulast=Clark&rft.aufirst=Pamela&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1049.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - 1 table N1 - SuppNotes - Accessed on Mar. 31, 2015 N1 - Last updated - 2015-08-13 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - concepts; CubeSat Mission; design; development; government agencies; L-WaDi; Lunar Water Distribution mission; LunarCube; Moon; NASA; polar regions; remote sensing; satellite methods; technology; water ER - TY - JOUR T1 - Reconciling the differences between the the measurements of CO (sub 2) isotopes by the Phoenix and MSL landers AN - 1703687114; 2015-077774 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Niles, Paul B AU - Mahaffy, P R AU - Atreya, S K AU - Pavlov, A A AU - Trainer, M AU - Webster, C R AU - Wong, M AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2573 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Mars Phoenix Lander KW - oxygen KW - isotopes KW - data processing KW - mass spectra KW - Mars KW - calibration KW - stable isotopes KW - carbon dioxide KW - carbon KW - Thermal Evolved Gas Analyzer KW - spectra KW - uncertainty KW - isotope ratios KW - C-13/C-12 KW - atmosphere KW - O-18/O-16 KW - measurement KW - terrestrial planets KW - planets KW - Sample Analysis at Mars KW - Mars Science Laboratory KW - corrections KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703687114?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Reconciling+the+differences+between+the+the+measurements+of+CO+%28sub+2%29+isotopes+by+the+Phoenix+and+MSL+landers&rft.au=Niles%2C+Paul+B%3BMahaffy%2C+P+R%3BAtreya%2C+S+K%3BPavlov%2C+A+A%3BTrainer%2C+M%3BWebster%2C+C+R%3BWong%2C+M%3BAnonymous&rft.aulast=Niles&rft.aufirst=Paul&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2573.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on Mar. 18, 2015 N1 - Last updated - 2015-08-13 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - atmosphere; C-13/C-12; calibration; carbon; carbon dioxide; corrections; data processing; instruments; isotope ratios; isotopes; Mars; Mars Phoenix Lander; Mars Science Laboratory; mass spectra; measurement; O-18/O-16; oxygen; planets; Sample Analysis at Mars; spectra; stable isotopes; terrestrial planets; Thermal Evolved Gas Analyzer; uncertainty ER - TY - JOUR T1 - Spectral comparison and stability of red regions on Jupiter AN - 1703687003; 2015-077829 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Simon, A A AU - Carlson, R W AU - Sanchez-Lavega, A AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1033 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - principal components analysis KW - optical spectra KW - statistical analysis KW - Jupiter KW - stability KW - Great Red Spot KW - cyclones KW - giant planets KW - planets KW - transient phenomena KW - color KW - Hubble Space Telescope KW - storms KW - spectra KW - outer planets KW - chemical composition KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703687003?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Spectral+comparison+and+stability+of+red+regions+on+Jupiter&rft.au=Simon%2C+A+A%3BCarlson%2C+R+W%3BSanchez-Lavega%2C+A%3BAnonymous&rft.aulast=Simon&rft.aufirst=A&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1033.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 11 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Mar. 30, 2015 N1 - Last updated - 2015-08-13 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - chemical composition; color; cyclones; giant planets; Great Red Spot; Hubble Space Telescope; Jupiter; optical spectra; outer planets; planets; principal components analysis; spectra; stability; statistical analysis; storms; transient phenomena ER - TY - JOUR T1 - (super 40) Ar/ (super 39) Ar studies of Martian meteorite RBT 04262 and terrestrial standards AN - 1703686979; 2015-077749 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Park, J AU - Herzog, G F AU - Turrin, B AU - Lindsay, F N AU - Delaney, J S AU - Swisher, C C, III AU - Nagao, K AU - Nyquist, L E AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1609 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - Ar/Ar KW - stony meteorites KW - Martian meteorites KW - RBT 04262 KW - isochrons KW - achondrites KW - Roberts Massif Meteorites KW - SNC Meteorites KW - meteorites KW - shergottite KW - aluminosilicates KW - dates KW - standard materials KW - absolute age KW - corrections KW - maskelynite KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703686979?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=%28super+40%29+Ar%2F+%28super+39%29+Ar+studies+of+Martian+meteorite+RBT+04262+and+terrestrial+standards&rft.au=Park%2C+J%3BHerzog%2C+G+F%3BTurrin%2C+B%3BLindsay%2C+F+N%3BDelaney%2C+J+S%3BSwisher%2C+C+C%2C+III%3BNagao%2C+K%3BNyquist%2C+L+E%3BAnonymous&rft.aulast=Park&rft.aufirst=J&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1609.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 29 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Mar. 17, 2015 N1 - Last updated - 2015-08-13 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - absolute age; achondrites; aluminosilicates; Ar/Ar; corrections; dates; isochrons; Martian meteorites; maskelynite; meteorites; RBT 04262; Roberts Massif Meteorites; shergottite; silicates; SNC Meteorites; standard materials; stony meteorites ER - TY - JOUR T1 - Remote Raman spectroscopy of salts and organics in the subsurface of ice; a potential instrument for exploring Europa AN - 1703686960; 2015-077824 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Sharma, S K AU - Porter, J N AU - Misra, A K AU - Acosta-Maeda, T E AU - Angel, S M AU - McKay, C P AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1678 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - icy satellites KW - Europa Satellite KW - Galilean satellites KW - exploration KW - carbon dioxide KW - sedimentary rocks KW - ice KW - spectra KW - satellites KW - water KW - experimental studies KW - chemically precipitated rocks KW - sulfates KW - naphthalene KW - anthracene KW - evaporites KW - epsomite KW - Raman spectroscopy KW - organic compounds KW - Raman spectra KW - hydrocarbons KW - polycyclic aromatic hydrocarbons KW - spectroscopy KW - aromatic hydrocarbons KW - salt KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703686960?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+spectroscopy+of+salts+and+organics+in+the+subsurface+of+ice%3B+a+potential+instrument+for+exploring+Europa&rft.au=Sharma%2C+S+K%3BPorter%2C+J+N%3BMisra%2C+A+K%3BAcosta-Maeda%2C+T+E%3BAngel%2C+S+M%3BMcKay%2C+C+P%3BAnonymous&rft.aulast=Sharma&rft.aufirst=S&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1678.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 18 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Mar. 30, 2015 N1 - Last updated - 2015-08-13 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - anthracene; aromatic hydrocarbons; carbon dioxide; chemically precipitated rocks; epsomite; Europa Satellite; evaporites; experimental studies; exploration; Galilean satellites; hydrocarbons; ice; icy satellites; naphthalene; organic compounds; polycyclic aromatic hydrocarbons; Raman spectra; Raman spectroscopy; remote sensing; salt; satellites; sedimentary rocks; spectra; spectroscopy; sulfates; water ER - TY - JOUR T1 - Identification of Martian regolith sulfur components in shergottites using sulfur K XANES and Fe/S ratios AN - 1703686820; 2015-077753 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Sutton, S R AU - Ross, D K AU - Rao, M N AU - Nyquist, L E AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1524 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - calcium sulfate KW - stony meteorites KW - Martian meteorites KW - mass spectra KW - Mars KW - Elephant Moraine Meteorites KW - XANES spectra KW - SNC Meteorites KW - meteorites KW - EETA 79001 KW - spectra KW - rare earths KW - pyrrhotite KW - Eh KW - sulfates KW - achondrites KW - X-ray spectra KW - terrestrial planets KW - ICP mass spectra KW - planets KW - Tissint Meteorite KW - shergottite KW - iron sulfides KW - metals KW - sulfur KW - sulfides KW - regolith KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703686820?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Identification+of+Martian+regolith+sulfur+components+in+shergottites+using+sulfur+K+XANES+and+Fe%2FS+ratios&rft.au=Sutton%2C+S+R%3BRoss%2C+D+K%3BRao%2C+M+N%3BNyquist%2C+L+E%3BAnonymous&rft.aulast=Sutton&rft.aufirst=S&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1524.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 9 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Mar. 17, 2015 N1 - Last updated - 2015-08-13 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; calcium sulfate; EETA 79001; Eh; Elephant Moraine Meteorites; ICP mass spectra; iron sulfides; Mars; Martian meteorites; mass spectra; metals; meteorites; planets; pyrrhotite; rare earths; regolith; shergottite; SNC Meteorites; spectra; stony meteorites; sulfates; sulfides; sulfur; terrestrial planets; Tissint Meteorite; X-ray spectra; XANES spectra ER - TY - JOUR T1 - Compact cryogenic environment instrumentation and experiment for the lunar surface as analogue for planet and exoplanet surface processes AN - 1703686818; 2015-077836 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Clark, Pamela E AU - Farrell, W M AU - Cox, R AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1052 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - water KW - polar regions KW - experimental studies KW - technology KW - extrasolar planets KW - Moon KW - concepts KW - temperature KW - exploration KW - planets KW - volatiles KW - ice KW - natural analogs KW - glacial environment KW - low temperature KW - cryogenic environment KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703686818?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Compact+cryogenic+environment+instrumentation+and+experiment+for+the+lunar+surface+as+analogue+for+planet+and+exoplanet+surface+processes&rft.au=Clark%2C+Pamela+E%3BFarrell%2C+W+M%3BCox%2C+R%3BAnonymous&rft.aulast=Clark&rft.aufirst=Pamela&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1052.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 13 N1 - PubXState - TX N1 - SuppNotes - Accessed on Mar. 31, 2015 N1 - Last updated - 2015-08-13 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - concepts; cryogenic environment; experimental studies; exploration; extrasolar planets; glacial environment; ice; instruments; low temperature; Moon; natural analogs; planets; polar regions; technology; temperature; volatiles; water ER - TY - JOUR T1 - Valence state partitioning of V between pyroxene and melt for Martian melt compositions Y 980459 and QUE 94201; the effect of pyroxene composition and crystal structure AN - 1703685952; 2015-077755 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Papike, J J AU - Burger, P V AU - Bell, A S AU - Shearer, C K AU - Provencio, P AU - Le, Loan AU - Jones, J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1029 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - pigeonite KW - stony meteorites KW - Martian meteorites KW - augite KW - substitution KW - olivine group KW - Mars KW - crystal structure KW - melts KW - SNC Meteorites KW - partitioning KW - meteorites KW - vanadium KW - pyroxene group KW - clinopyroxene KW - olivine KW - orthosilicates KW - valency KW - chain silicates KW - Yamato Meteorites KW - Y 980459 KW - QUE 94201 KW - achondrites KW - terrestrial planets KW - nesosilicates KW - planets KW - shergottite KW - metals KW - Queen Alexandra Range Meteorites KW - orthopyroxene KW - crystal chemistry KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703685952?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Valence+state+partitioning+of+V+between+pyroxene+and+melt+for+Martian+melt+compositions+Y+980459+and+QUE+94201%3B+the+effect+of+pyroxene+composition+and+crystal+structure&rft.au=Papike%2C+J+J%3BBurger%2C+P+V%3BBell%2C+A+S%3BShearer%2C+C+K%3BProvencio%2C+P%3BLe%2C+Loan%3BJones%2C+J%3BAnonymous&rft.aulast=Papike&rft.aufirst=J&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1029.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 4 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Mar. 17, 2015 N1 - Last updated - 2015-08-13 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; augite; chain silicates; clinopyroxene; crystal chemistry; crystal structure; Mars; Martian meteorites; melts; metals; meteorites; nesosilicates; olivine; olivine group; orthopyroxene; orthosilicates; partitioning; pigeonite; planets; pyroxene group; QUE 94201; Queen Alexandra Range Meteorites; shergottite; silicates; SNC Meteorites; stony meteorites; substitution; terrestrial planets; valency; vanadium; Y 980459; Yamato Meteorites ER - TY - JOUR T1 - Model Helene; reconstructing the histories of Saturnian Trojan satellites using landforms AN - 1703685760; 2015-077807 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Umurhan, Orkan M AU - Moore, Jeff M AU - Howard, A D AU - Schenk, P M AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2384 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - slopes KW - landform evolution KW - glaciers KW - Trojan satellites KW - debris flows KW - simulation KW - giant planets KW - models KW - Saturn KW - planets KW - gravity field KW - rheology KW - creep KW - mass movements KW - reconstruction KW - outer planets KW - geomorphology KW - satellites KW - mass transfer KW - Helene Satellite KW - fluidization KW - plasticity KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703685760?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Model+Helene%3B+reconstructing+the+histories+of+Saturnian+Trojan+satellites+using+landforms&rft.au=Umurhan%2C+Orkan+M%3BMoore%2C+Jeff+M%3BHoward%2C+A+D%3BSchenk%2C+P+M%3BAnonymous&rft.aulast=Umurhan&rft.aufirst=Orkan&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2384.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - SuppNotes - Accessed on Mar. 24, 2015 N1 - Last updated - 2015-08-13 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - creep; debris flows; fluidization; geomorphology; giant planets; glaciers; gravity field; Helene Satellite; landform evolution; mass movements; mass transfer; models; outer planets; planets; plasticity; reconstruction; regolith; rheology; satellites; Saturn; simulation; slopes; Trojan satellites ER - TY - JOUR T1 - In situ probe science at Saturn AN - 1703685757; 2015-077827 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Atkinson, D H AU - Lunine, J I AU - Simon-Miller, A A AU - Atreya, S K AU - Brinckerhoff, W AU - Colaprete, Anthony AU - Coustenis, Athena AU - Fletcher, L N AU - Guillot, T AU - Lebreton, J P AU - Mahaffy, P R AU - Mousis, O AU - Orton, G S AU - Reh, K AU - Spilker, L J AU - Spilker, T R AU - Webster, C AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1377 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - solar system KW - in situ KW - isotopes KW - atmosphere KW - stable isotopes KW - giant planets KW - Saturn KW - planets KW - dynamics KW - noble gases KW - outer planets KW - chemical composition KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703685757?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=In+situ+probe+science+at+Saturn&rft.au=Atkinson%2C+D+H%3BLunine%2C+J+I%3BSimon-Miller%2C+A+A%3BAtreya%2C+S+K%3BBrinckerhoff%2C+W%3BColaprete%2C+Anthony%3BCoustenis%2C+Athena%3BFletcher%2C+L+N%3BGuillot%2C+T%3BLebreton%2C+J+P%3BMahaffy%2C+P+R%3BMousis%2C+O%3BOrton%2C+G+S%3BReh%2C+K%3BSpilker%2C+L+J%3BSpilker%2C+T+R%3BWebster%2C+C%3BAnonymous&rft.aulast=Atkinson&rft.aufirst=D&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1377.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 11 N1 - PubXState - TX N1 - SuppNotes - Accessed on Mar. 30, 2015 N1 - Last updated - 2015-08-13 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - atmosphere; chemical composition; dynamics; giant planets; in situ; isotopes; noble gases; outer planets; planets; Saturn; solar system; stable isotopes ER - TY - JOUR T1 - Europa's UV Aurora; following up on the discovery of the south polar water vapor plumes with HST/STIS AN - 1703685680; 2015-077798 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Roth, L AU - Retherford, K D AU - Saur, J AU - Strobel, D F AU - Feldman, P D AU - McGrath, M A AU - Nimmo, F AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1488 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - water KW - icy satellites KW - plumes KW - imagery KW - oxygen KW - Europa Satellite KW - subsurface ocean KW - aurora KW - stress KW - water vapor KW - Galilean satellites KW - magnetic field KW - models KW - fractures KW - detection KW - habitability KW - Hubble Space Telescope KW - ultraviolet spectra KW - temporal distribution KW - spectra KW - satellites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703685680?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Europa%27s+UV+Aurora%3B+following+up+on+the+discovery+of+the+south+polar+water+vapor+plumes+with+HST%2FSTIS&rft.au=Roth%2C+L%3BRetherford%2C+K+D%3BSaur%2C+J%3BStrobel%2C+D+F%3BFeldman%2C+P+D%3BMcGrath%2C+M+A%3BNimmo%2C+F%3BAnonymous&rft.aulast=Roth&rft.aufirst=L&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1488.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 6 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Mar. 24, 2015 N1 - Last updated - 2015-08-13 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - aurora; detection; Europa Satellite; fractures; Galilean satellites; habitability; Hubble Space Telescope; icy satellites; imagery; magnetic field; models; oxygen; plumes; satellites; spectra; stress; subsurface ocean; temporal distribution; ultraviolet spectra; water; water vapor ER - TY - JOUR T1 - Scientific rationale of a Saturn probe mission AN - 1703685584; 2015-077841 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Mousis, Olivier AU - Fletcher, L N AU - Lebreton, J P AU - Wurz, P AU - Cavalie, T AU - Coustenis, Athena AU - Atkinson, D H AU - Atreya, S K AU - Gautier, D AU - Guillot, T AU - Lunine, J I AU - Marty, B AU - Morse, A D AU - Reh, K R AU - Simon-Miller, A AU - Spilker, T AU - Waite, J H AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1261 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - clouds KW - pressure KW - in situ KW - isotopes KW - atmosphere KW - temperature KW - measurement KW - giant planets KW - exploration KW - Saturn KW - planets KW - volatiles KW - objectives KW - noble gases KW - outer planets KW - chemical composition KW - winds KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703685584?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Scientific+rationale+of+a+Saturn+probe+mission&rft.au=Mousis%2C+Olivier%3BFletcher%2C+L+N%3BLebreton%2C+J+P%3BWurz%2C+P%3BCavalie%2C+T%3BCoustenis%2C+Athena%3BAtkinson%2C+D+H%3BAtreya%2C+S+K%3BGautier%2C+D%3BGuillot%2C+T%3BLunine%2C+J+I%3BMarty%2C+B%3BMorse%2C+A+D%3BReh%2C+K+R%3BSimon-Miller%2C+A%3BSpilker%2C+T%3BWaite%2C+J+H%3BAnonymous&rft.aulast=Mousis&rft.aufirst=Olivier&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1261.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 14 N1 - PubXState - TX N1 - SuppNotes - Accessed on Mar. 31, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - atmosphere; chemical composition; clouds; exploration; giant planets; in situ; isotopes; measurement; noble gases; objectives; outer planets; planets; pressure; Saturn; temperature; volatiles; winds ER - TY - JOUR T1 - Europa's water vapor plumes; discovery with HST and plans for JUICE-UVS observations AN - 1703685435; 2015-077797 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Retherford, K D AU - Roth, L AU - Saur, J AU - Gladstone, G R AU - Nimmo, F AU - McGrath, M A AU - Feldman, P D AU - Strobel, D F AU - Greathouse, T K AU - Davis, M W AU - Steffl, A J AU - Spencer, J R AU - Bagenal, F AU - Fletcher, L N AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 1639 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - icy satellites KW - plumes KW - imagery KW - oxygen KW - Europa Satellite KW - Jupiter KW - atmosphere KW - water vapor KW - Galilean satellites KW - magnetic field KW - Jupiter Icy Moons Explorer KW - JUICE Mission KW - giant planets KW - planets KW - Hubble Space Telescope KW - ultraviolet spectra KW - spectra KW - outer planets KW - satellites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703685435?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Europa%27s+water+vapor+plumes%3B+discovery+with+HST+and+plans+for+JUICE-UVS+observations&rft.au=Retherford%2C+K+D%3BRoth%2C+L%3BSaur%2C+J%3BGladstone%2C+G+R%3BNimmo%2C+F%3BMcGrath%2C+M+A%3BFeldman%2C+P+D%3BStrobel%2C+D+F%3BGreathouse%2C+T+K%3BDavis%2C+M+W%3BSteffl%2C+A+J%3BSpencer%2C+J+R%3BBagenal%2C+F%3BFletcher%2C+L+N%3BAnonymous&rft.aulast=Retherford&rft.aufirst=K&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1639.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 9 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Mar. 24, 2015 N1 - Last updated - 2015-11-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - atmosphere; Europa Satellite; Galilean satellites; giant planets; Hubble Space Telescope; icy satellites; imagery; JUICE Mission; Jupiter; Jupiter Icy Moons Explorer; magnetic field; outer planets; oxygen; planets; plumes; satellites; spectra; ultraviolet spectra; water vapor ER - TY - JOUR T1 - Timing of formation of a wassonite-bearing chondrule AN - 1668231244; 2015-027437 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Needham, Andrew W AU - Nakamura-Messenger, K AU - Rubin, A E AU - Choi, B G AU - Messenger, S AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2162 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - magnesium KW - stony meteorites KW - ion probe data KW - isotopes KW - mass spectra KW - wassonite KW - stable isotopes KW - meteorites KW - EH chondrites KW - radioactive isotopes KW - chronology KW - aluminum KW - enstatite chondrites KW - Al-27/Al-26 KW - spectra KW - chondrites KW - Eh KW - alkaline earth metals KW - Yamato Meteorites KW - isotope ratios KW - Al/Mg KW - solar nebula KW - Y 691 KW - Mg-26/Mg-24 KW - metals KW - chondrules KW - sulfides KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668231244?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Timing+of+formation+of+a+wassonite-bearing+chondrule&rft.au=Needham%2C+Andrew+W%3BNakamura-Messenger%2C+K%3BRubin%2C+A+E%3BChoi%2C+B+G%3BMessenger%2C+S%3BAnonymous&rft.aulast=Needham&rft.aufirst=Andrew&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2162.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 16 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Sept. 2, 2014 N1 - Last updated - 2015-04-02 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Al-27/Al-26; Al/Mg; alkaline earth metals; aluminum; chondrites; chondrules; chronology; Eh; EH chondrites; enstatite chondrites; ion probe data; isotope ratios; isotopes; magnesium; mass spectra; metals; meteorites; Mg-26/Mg-24; radioactive isotopes; solar nebula; spectra; stable isotopes; stony meteorites; sulfides; wassonite; Y 691; Yamato Meteorites ER - TY - JOUR T1 - Origins and distribution of chondritic olivine inferred from Wild 2 and chondrite matrix AN - 1668231140; 2015-027469 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Frank, David R AU - Zolensky, Michael E AU - Le, L AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2643 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - calcium KW - stony meteorites KW - refractory materials KW - Kuiper Belt KW - olivine group KW - manganese KW - electron probe data KW - meteorites KW - pyroxene group KW - mineral composition KW - transport KW - fayalite KW - aluminum KW - olivine KW - orthosilicates KW - Wild 2 Comet KW - relict materials KW - chondrites KW - chain silicates KW - alkaline earth metals KW - parent bodies KW - matrix KW - forsterite KW - nesosilicates KW - comets KW - metals KW - chondrules KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668231140?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Origins+and+distribution+of+chondritic+olivine+inferred+from+Wild+2+and+chondrite+matrix&rft.au=Frank%2C+David+R%3BZolensky%2C+Michael+E%3BLe%2C+L%3BAnonymous&rft.aulast=Frank&rft.aufirst=David&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2643.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 20 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Sept. 5, 2014 N1 - Last updated - 2015-04-02 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alkaline earth metals; aluminum; calcium; chain silicates; chondrites; chondrules; comets; electron probe data; fayalite; forsterite; Kuiper Belt; manganese; matrix; metals; meteorites; mineral composition; nesosilicates; olivine; olivine group; orthosilicates; parent bodies; pyroxene group; refractory materials; relict materials; silicates; stony meteorites; transport; Wild 2 Comet ER - TY - JOUR T1 - Stable magnesium isotope variation in melilite mantle of Allende type B1 CAI EK 459-5-1 AN - 1668231130; 2015-027424 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Kerekgyarto, A G AU - Jeffcoat, C R AU - Lapen, T J AU - Andreasen, R AU - Righter, M AU - Ross, D K AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstrct 2874 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - sorosilicates KW - silicates KW - magnesium KW - stony meteorites KW - isotopes KW - calcium-aluminum inclusions KW - mass spectra KW - CV chondrites KW - stable isotopes KW - Allende Meteorite KW - meteorites KW - melilite group KW - melilite KW - Mg-25/Mg-24 KW - inclusions KW - orthosilicates KW - spectra KW - trace elements KW - chondrites KW - zoning KW - alkaline earth metals KW - isotope ratios KW - carbonaceous chondrites KW - ICP mass spectra KW - metals KW - petrography KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668231130?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Stable+magnesium+isotope+variation+in+melilite+mantle+of+Allende+type+B1+CAI+EK+459-5-1&rft.au=Kerekgyarto%2C+A+G%3BJeffcoat%2C+C+R%3BLapen%2C+T+J%3BAndreasen%2C+R%3BRighter%2C+M%3BRoss%2C+D+K%3BAnonymous&rft.aulast=Kerekgyarto&rft.aufirst=A&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2874.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 11 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 26, 2014 N1 - Last updated - 2015-04-02 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alkaline earth metals; Allende Meteorite; calcium-aluminum inclusions; carbonaceous chondrites; chondrites; CV chondrites; ICP mass spectra; inclusions; isotope ratios; isotopes; magnesium; mass spectra; melilite; melilite group; metals; meteorites; Mg-25/Mg-24; orthosilicates; petrography; silicates; sorosilicates; spectra; stable isotopes; stony meteorites; trace elements; zoning ER - TY - JOUR T1 - Rapid classification of ordinary chondrites using Raman spectroscopy AN - 1668230464; 2015-027447 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Fries, Marc D AU - Welzenbach, L AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2519 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - ordinary chondrites KW - stony meteorites KW - olivine group KW - calibration KW - automated analysis KW - nesosilicates KW - meteorites KW - Raman spectra KW - pyroxene group KW - mineral composition KW - fayalite KW - olivine KW - classification KW - orthosilicates KW - spectra KW - orthopyroxene KW - chondrites KW - chemical composition KW - ferrosilite KW - chain silicates KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668230464?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Rapid+classification+of+ordinary+chondrites+using+Raman+spectroscopy&rft.au=Fries%2C+Marc+D%3BWelzenbach%2C+L%3BAnonymous&rft.aulast=Fries&rft.aufirst=Marc&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2519.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 11 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Sept. 3, 2014 N1 - Last updated - 2015-04-02 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - automated analysis; calibration; chain silicates; chemical composition; chondrites; classification; fayalite; ferrosilite; meteorites; mineral composition; nesosilicates; olivine; olivine group; ordinary chondrites; orthopyroxene; orthosilicates; pyroxene group; Raman spectra; silicates; spectra; stony meteorites ER - TY - JOUR T1 - Using NASA-unique lunar sample disks and resources to inspire and promote scientific inquiry AN - 1668229900; 2015-027380 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Graff, Paige V AU - Allen, J AU - Willis, K J AU - Runco, S AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2662 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - soils KW - cratering KW - solar system KW - Earth KW - impact features KW - Moon KW - government agencies KW - exploration KW - lunar samples KW - educational resources KW - NASA KW - surface features KW - impact craters KW - rocks KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668229900?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Using+NASA-unique+lunar+sample+disks+and+resources+to+inspire+and+promote+scientific+inquiry&rft.au=Graff%2C+Paige+V%3BAllen%2C+J%3BWillis%2C+K+J%3BRunco%2C+S%3BAnonymous&rft.aulast=Graff&rft.aufirst=Paige&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2662.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 3 N1 - PubXState - TX N1 - SuppNotes - Accessed on Aug. 18, 2014 N1 - Last updated - 2015-04-02 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - cratering; Earth; educational resources; exploration; government agencies; impact craters; impact features; lunar samples; Moon; NASA; regolith; rocks; soils; solar system; surface features ER - TY - JOUR T1 - Invisible Mars; the MAVEN education and public outreach science on a sphere program AN - 1668228828; 2015-027385 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Jones, Andrea J P AU - Hsu, Brooke C AU - Bleacher, Lora V AU - Alima Ali, N AU - Hauck, K AU - Peticolas, L AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2691 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - water KW - programs KW - ionosphere KW - Science On a Sphere visualization system KW - MAVEN Mission KW - Mars Atmosphere and Volatile EvolutioN mission KW - public awareness KW - video methods KW - solar wind KW - government agencies KW - data processing KW - atmosphere KW - Mars KW - education KW - terrestrial planets KW - computer programs KW - visualization KW - planets KW - volatiles KW - Invisible Mars Program KW - NOAA KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668228828?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Invisible+Mars%3B+the+MAVEN+education+and+public+outreach+science+on+a+sphere+program&rft.au=Jones%2C+Andrea+J+P%3BHsu%2C+Brooke+C%3BBleacher%2C+Lora+V%3BAlima+Ali%2C+N%3BHauck%2C+K%3BPeticolas%2C+L%3BAnonymous&rft.aulast=Jones&rft.aufirst=Andrea+J&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2691.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 6 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 19, 2014 N1 - Last updated - 2015-08-13 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - atmosphere; computer programs; data processing; education; government agencies; Invisible Mars Program; ionosphere; Mars; Mars Atmosphere and Volatile EvolutioN mission; MAVEN Mission; NOAA; planets; programs; public awareness; Science On a Sphere visualization system; solar wind; terrestrial planets; video methods; visualization; volatiles; water ER - TY - JOUR T1 - New perspectives on the Lunar far-UV albedo; implications of LRO Lyman Alpha Mapping Project (LAMP) results for future exploration AN - 1660632334; 2015-018524 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Retherford, K D AU - Greathouse, T K AU - Gladstone, G R AU - Hendrix, A R AU - Mandt, K E AU - Miles, P F AU - Egan, A F AU - Kaufmann, D E AU - Bullock, M A AU - Stern, S A AU - Parker, J W AU - Davis, M W AU - Feldman, P D AU - Hurley, D M AU - Pryor, W R AU - Grava, C AU - Mukherjee, J AU - Hayne, P O AU - Mazarico, E AU - Mokashi, P AU - Seifert, C M AU - Karnes, P L AU - Seifert, C J AU - Versteeg, M H AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2372 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - water KW - albedo KW - far ultraviolet KW - Moon KW - Lunar Reconnaissance Orbiter KW - mapping KW - weathering KW - porosity KW - exploration KW - hydration KW - volatiles KW - space weathering KW - photometry KW - permanently shadowed regions KW - ultraviolet spectra KW - Lyman Alpha Mapping Project KW - spectra KW - reflectance KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660632334?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=New+perspectives+on+the+Lunar+far-UV+albedo%3B+implications+of+LRO+Lyman+Alpha+Mapping+Project+%28LAMP%29+results+for+future+exploration&rft.au=Retherford%2C+K+D%3BGreathouse%2C+T+K%3BGladstone%2C+G+R%3BHendrix%2C+A+R%3BMandt%2C+K+E%3BMiles%2C+P+F%3BEgan%2C+A+F%3BKaufmann%2C+D+E%3BBullock%2C+M+A%3BStern%2C+S+A%3BParker%2C+J+W%3BDavis%2C+M+W%3BFeldman%2C+P+D%3BHurley%2C+D+M%3BPryor%2C+W+R%3BGrava%2C+C%3BMukherjee%2C+J%3BHayne%2C+P+O%3BMazarico%2C+E%3BMokashi%2C+P%3BSeifert%2C+C+M%3BKarnes%2C+P+L%3BSeifert%2C+C+J%3BVersteeg%2C+M+H%3BAnonymous&rft.aulast=Retherford&rft.aufirst=K&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2372.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 5 N1 - PubXState - TX N1 - SuppNotes - Accessed on May 8, 2014 N1 - Last updated - 2015-04-16 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - albedo; exploration; far ultraviolet; hydration; Lunar Reconnaissance Orbiter; Lyman Alpha Mapping Project; mapping; Moon; permanently shadowed regions; photometry; porosity; reflectance; space weathering; spectra; ultraviolet spectra; volatiles; water; weathering ER - TY - JOUR T1 - Recent mission observations provide scientific context and enabling support for future exploration of the Moon's South Pole-Aitken Basin AN - 1660631699; 2015-018518 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Jolliff, B L AU - Petro, N E AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2357 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Lunar Orbiter Laser Altimeter KW - hyperspectral analysis KW - impact features KW - Lunar Reconnaissance Orbiter KW - Lunar Reconnaissance Orbiter Camera KW - Lunar Prospector Program KW - landing sites KW - Chandrayaan-1 Mission KW - digital terrain models KW - melts KW - exploration KW - multispectral analysis KW - Gravity Recovery and Interior Laboratory mission KW - impact melts KW - topography KW - mineral composition KW - spectra KW - geochemistry KW - Moon KW - differentiation KW - GRAIL KW - early solar system KW - South Pole-Aitken Basin KW - lunar crust KW - Clementine Program KW - impact craters KW - Kaguya Mission KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660631699?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Recent+mission+observations+provide+scientific+context+and+enabling+support+for+future+exploration+of+the+Moon%27s+South+Pole-Aitken+Basin&rft.au=Jolliff%2C+B+L%3BPetro%2C+N+E%3BAnonymous&rft.aulast=Jolliff&rft.aufirst=B&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2357.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 20 N1 - PubXState - TX N1 - Document feature - sketch map N1 - SuppNotes - Accessed on May 8, 2014 N1 - Last updated - 2015-04-16 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Chandrayaan-1 Mission; Clementine Program; differentiation; digital terrain models; early solar system; exploration; geochemistry; GRAIL; Gravity Recovery and Interior Laboratory mission; hyperspectral analysis; impact craters; impact features; impact melts; Kaguya Mission; landing sites; lunar crust; Lunar Orbiter Laser Altimeter; Lunar Prospector Program; Lunar Reconnaissance Orbiter; Lunar Reconnaissance Orbiter Camera; melts; mineral composition; Moon; multispectral analysis; South Pole-Aitken Basin; spectra; topography ER - TY - JOUR T1 - A high-resolution view of the Orientale Basin and surroundings from the Gravity Recovery and Interior Laboratory (GRAIL) AN - 1660631632; 2015-018516 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Zuber, Maria T AU - Smith, David E AU - Goossens, Sander J AU - Asmar, Sami W AU - Konopliv, Alexander S AU - Lemoine, Frank G AU - Melosh, H Jay AU - Neumann, Gregory A AU - Phillips, Roger J AU - Solomon, Sean C AU - Watkins, Michael M AU - Wieczorek, Mark A AU - Andrews-Hanna, Jeffrey C AU - Head, James W AU - Kiefer, Walter S AU - McGovern, Patrick J AU - Nimmo, Francis AU - Taylor, G Jeffrey AU - Besserer, Jonathan AU - Johnson, Brandon C AU - Miljkovic, Katarina AU - Soderblom, Jason M AU - Blair, David M AU - Kruizinga, Gerhard L AU - Mazarico, Erwan AU - Yuan, Dah-Ning AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2061 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - high-resolution methods KW - imagery KW - free-air anomalies KW - Moon KW - Mare Orientale KW - mapping KW - GRAIL KW - spherical harmonic analysis KW - models KW - Gravity Recovery and Interior Laboratory mission KW - gravity field KW - orbital observations KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660631632?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=A+high-resolution+view+of+the+Orientale+Basin+and+surroundings+from+the+Gravity+Recovery+and+Interior+Laboratory+%28GRAIL%29&rft.au=Zuber%2C+Maria+T%3BSmith%2C+David+E%3BGoossens%2C+Sander+J%3BAsmar%2C+Sami+W%3BKonopliv%2C+Alexander+S%3BLemoine%2C+Frank+G%3BMelosh%2C+H+Jay%3BNeumann%2C+Gregory+A%3BPhillips%2C+Roger+J%3BSolomon%2C+Sean+C%3BWatkins%2C+Michael+M%3BWieczorek%2C+Mark+A%3BAndrews-Hanna%2C+Jeffrey+C%3BHead%2C+James+W%3BKiefer%2C+Walter+S%3BMcGovern%2C+Patrick+J%3BNimmo%2C+Francis%3BTaylor%2C+G+Jeffrey%3BBesserer%2C+Jonathan%3BJohnson%2C+Brandon+C%3BMiljkovic%2C+Katarina%3BSoderblom%2C+Jason+M%3BBlair%2C+David+M%3BKruizinga%2C+Gerhard+L%3BMazarico%2C+Erwan%3BYuan%2C+Dah-Ning%3BAnonymous&rft.aulast=Zuber&rft.aufirst=Maria&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2061.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 22 N1 - PubXState - TX N1 - Document feature - illus. incl. geol. sketch map N1 - SuppNotes - Accessed on May 8, 2014 N1 - Last updated - 2015-03-05 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - free-air anomalies; GRAIL; gravity field; Gravity Recovery and Interior Laboratory mission; high-resolution methods; imagery; mapping; Mare Orientale; models; Moon; orbital observations; spherical harmonic analysis ER - TY - JOUR T1 - Evidence for a Noachian-aged ephemeral lake in Gusev Crater, Mars AN - 1660631439; 2015-018533 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Ruff, S W AU - Niles, P B AU - Alfano, F AU - Clarke, A B AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1739 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - alteration KW - Spirit Rover KW - Noachian KW - lakes KW - Algonquin KW - olivine group KW - Mars KW - carbon dioxide KW - Mars Exploration Rover KW - ephemeral lakes KW - olivine KW - orthosilicates KW - outcrops KW - chemical composition KW - Mini-TES KW - Gusev Crater KW - textures KW - Columbia Hills KW - terrestrial planets KW - nesosilicates KW - planets KW - evaporation KW - precipitation KW - infiltration KW - Comanche KW - brines KW - carbonates KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660631439?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+a+Noachian-aged+ephemeral+lake+in+Gusev+Crater%2C+Mars&rft.au=Ruff%2C+S+W%3BNiles%2C+P+B%3BAlfano%2C+F%3BClarke%2C+A+B%3BAnonymous&rft.aulast=Ruff&rft.aufirst=S&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1739.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 16 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 9, 2014 N1 - Last updated - 2015-03-05 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Algonquin; alteration; brines; carbon dioxide; carbonates; chemical composition; Columbia Hills; Comanche; ephemeral lakes; evaporation; Gusev Crater; infiltration; lakes; Mars; Mars Exploration Rover; Mini-TES; nesosilicates; Noachian; olivine; olivine group; orthosilicates; outcrops; planets; precipitation; silicates; Spirit Rover; terrestrial planets; textures ER - TY - JOUR T1 - Identification of a compound spinel and silicate presolar grain in a chondritic interplanetary dust particle AN - 1660631358; 2015-018549 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Nguyen, A N AU - Nakamura-Messenger, K AU - Messenger, S AU - Keller, L P AU - Kloeck, W AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2351 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - oxygen KW - ion probe data KW - isotopes KW - microstructure KW - mass spectra KW - interplanetary dust KW - stable isotopes KW - pyroxene group KW - presolar grains KW - oxides KW - spectra KW - stoichiometry KW - enstatite KW - O-17/O-16 KW - chain silicates KW - condensation KW - amorphous materials KW - isotope ratios KW - spinel KW - O-18/O-16 KW - TEM data KW - solar nebula KW - cosmic dust KW - NanoSIMS KW - orthopyroxene KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660631358?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Identification+of+a+compound+spinel+and+silicate+presolar+grain+in+a+chondritic+interplanetary+dust+particle&rft.au=Nguyen%2C+A+N%3BNakamura-Messenger%2C+K%3BMessenger%2C+S%3BKeller%2C+L+P%3BKloeck%2C+W%3BAnonymous&rft.aulast=Nguyen&rft.aufirst=A&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2351.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 16 N1 - PubXState - TX N1 - Document feature - illus. N1 - Last updated - 2015-03-05 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - amorphous materials; chain silicates; condensation; cosmic dust; enstatite; interplanetary dust; ion probe data; isotope ratios; isotopes; mass spectra; microstructure; NanoSIMS; O-17/O-16; O-18/O-16; orthopyroxene; oxides; oxygen; presolar grains; pyroxene group; silicates; solar nebula; spectra; spinel; stable isotopes; stoichiometry; TEM data ER - TY - JOUR T1 - Sm-Nd and Rb-Sr isotopic systematics of a heavily shocked Martian meteorite Tissint and petrogenesis of depleted shergottites AN - 1660631330; 2015-018538 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Shih, C Y AU - Nyquist, L E AU - Park, J AU - Agee, Carl B AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1184 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - stony meteorites KW - Martian meteorites KW - DaG 476 KW - partial melting KW - Mars KW - Rb/Sr KW - SNC Meteorites KW - meteorites KW - Dar al Gani Meteorites KW - dates KW - SaU 005 KW - absolute age KW - Sayh al Uhaymir Meteorites KW - rare earths KW - basaltic composition KW - depletion KW - Yamato Meteorites KW - Y 980459 KW - SaU 094 KW - metamorphism KW - achondrites KW - terrestrial planets KW - genesis KW - planets KW - Tissint Meteorite KW - shergottite KW - Sm/Nd KW - metals KW - shock metamorphism KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660631330?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Sm-Nd+and+Rb-Sr+isotopic+systematics+of+a+heavily+shocked+Martian+meteorite+Tissint+and+petrogenesis+of+depleted+shergottites&rft.au=Shih%2C+C+Y%3BNyquist%2C+L+E%3BPark%2C+J%3BAgee%2C+Carl+B%3BAnonymous&rft.aulast=Shih&rft.aufirst=C&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1184.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 21 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 12, 2014 N1 - Last updated - 2015-03-05 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - absolute age; achondrites; basaltic composition; DaG 476; Dar al Gani Meteorites; dates; depletion; genesis; Mars; Martian meteorites; metals; metamorphism; meteorites; partial melting; planets; rare earths; Rb/Sr; SaU 005; SaU 094; Sayh al Uhaymir Meteorites; shergottite; shock metamorphism; Sm/Nd; SNC Meteorites; stony meteorites; terrestrial planets; Tissint Meteorite; Y 980459; Yamato Meteorites ER - TY - JOUR T1 - Noachian impact breccias on the rim of Endeavour Crater, Mars; Opportunity APXS results AN - 1660631300; 2015-018535 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Mittlefehldt, D W AU - Gellert, R AU - Arvidson, R E AU - Bell, J R, III AU - Farrand, W H AU - Herkenhoff, K E AU - Jolliff, B L AU - Ming, D W AU - Schroeder, C AU - Sullivan, R J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1640 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Copper Cliff Member KW - Shoemaker Formation KW - Noachian KW - Murray Ridge KW - Mars KW - manganese KW - iron KW - Mars Exploration Rover KW - Chester Lake Member KW - metamorphic rocks KW - chemical composition KW - Alpha particle X-ray spectrometer KW - Meridiani Planum KW - breccia KW - impactites KW - Opportunity Rover KW - textures KW - impact breccia KW - Cape York KW - terrestrial planets KW - Greeley Haven Member KW - aqueous alteration KW - planets KW - metals KW - Matijevic Formation KW - Endeavour Crater KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660631300?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Noachian+impact+breccias+on+the+rim+of+Endeavour+Crater%2C+Mars%3B+Opportunity+APXS+results&rft.au=Mittlefehldt%2C+D+W%3BGellert%2C+R%3BArvidson%2C+R+E%3BBell%2C+J+R%2C+III%3BFarrand%2C+W+H%3BHerkenhoff%2C+K+E%3BJolliff%2C+B+L%3BMing%2C+D+W%3BSchroeder%2C+C%3BSullivan%2C+R+J%3BAnonymous&rft.aulast=Mittlefehldt&rft.aufirst=D&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1640.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 9, 2014 N1 - Last updated - 2015-04-16 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Alpha particle X-ray spectrometer; aqueous alteration; breccia; Cape York; chemical composition; Chester Lake Member; Copper Cliff Member; Endeavour Crater; Greeley Haven Member; impact breccia; impactites; iron; manganese; Mars; Mars Exploration Rover; Matijevic Formation; Meridiani Planum; metals; metamorphic rocks; Murray Ridge; Noachian; Opportunity Rover; planets; Shoemaker Formation; terrestrial planets; textures ER - TY - JOUR T1 - The Mare Imbrium flow field; regional geologic context of the Chang'e 3 landing site AN - 1660631290; 2015-018527 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Garry, W B AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2169 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Lunar Orbiter Laser Altimeter KW - Lunar Orbiter KW - imagery KW - lava flows KW - Moon KW - Lunar Reconnaissance Orbiter KW - Lunar Reconnaissance Orbiter Camera KW - Kaguya Terrain Camera KW - geotraverses KW - mapping KW - Apollo Program KW - landing sites KW - volcanic fields KW - morphology KW - Yutu Rover KW - topography KW - Mare Imbrium KW - planning KW - mosaics KW - Moon Mineralogy Mapper KW - Clementine Program KW - Chang'E 3 Mission KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660631290?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+Mare+Imbrium+flow+field%3B+regional+geologic+context+of+the+Chang%27e+3+landing+site&rft.au=Garry%2C+W+B%3BAnonymous&rft.aulast=Garry&rft.aufirst=W&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2169.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 13 N1 - PubXState - TX N1 - Document feature - illus. incl. sketch maps N1 - SuppNotes - Accessed on May 9, 2014 N1 - Last updated - 2015-04-16 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Apollo Program; Chang'E 3 Mission; Clementine Program; geotraverses; imagery; Kaguya Terrain Camera; landing sites; lava flows; Lunar Orbiter; Lunar Orbiter Laser Altimeter; Lunar Reconnaissance Orbiter; Lunar Reconnaissance Orbiter Camera; mapping; Mare Imbrium; Moon; Moon Mineralogy Mapper; morphology; mosaics; planning; topography; volcanic fields; Yutu Rover ER - TY - JOUR T1 - Destinations for sampling impact melt produced by the South Pole-Aitken Basin AN - 1660631256; 2015-018519 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Hurwitz, Debra M AU - Kring, David A AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1398 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - pigeonite KW - imagery KW - impact features KW - Lunar Reconnaissance Orbiter KW - melts KW - lunar craters KW - impact melts KW - topography KW - pyroxene group KW - clinopyroxene KW - sampling KW - geochemical anomalies KW - outcrops KW - Narrow Angle Camera KW - chain silicates KW - Moon KW - Schrodinger Crater KW - differentiation KW - mounds KW - ejecta KW - South Pole-Aitken Basin KW - impact craters KW - orthopyroxene KW - lunar basins KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660631256?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Destinations+for+sampling+impact+melt+produced+by+the+South+Pole-Aitken+Basin&rft.au=Hurwitz%2C+Debra+M%3BKring%2C+David+A%3BAnonymous&rft.aulast=Hurwitz&rft.aufirst=Debra&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1398.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 14 N1 - PubXState - TX N1 - Document feature - illus. incl. sketch map N1 - SuppNotes - Accessed on May 8, 2014 N1 - Last updated - 2015-03-05 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - chain silicates; clinopyroxene; differentiation; ejecta; geochemical anomalies; imagery; impact craters; impact features; impact melts; lunar basins; lunar craters; Lunar Reconnaissance Orbiter; melts; Moon; mounds; Narrow Angle Camera; orthopyroxene; outcrops; pigeonite; pyroxene group; sampling; Schrodinger Crater; silicates; South Pole-Aitken Basin; topography ER - TY - JOUR T1 - Improving techniques for determination of lunar basin crater retention ages AN - 1648908044; 2015-010738 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - McBride, M J AU - Frey, H V AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2150 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - methods KW - Lunar Orbiter Laser Altimeter KW - Moon KW - GRAIL KW - lunar craters KW - size KW - South Pole-Aitken Basin KW - topography KW - lunar crust KW - crater retention age KW - age KW - basins KW - thickness KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1648908044?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Improving+techniques+for+determination+of+lunar+basin+crater+retention+ages&rft.au=McBride%2C+M+J%3BFrey%2C+H+V%3BAnonymous&rft.aulast=McBride&rft.aufirst=M&rft.date=2014-01-01&rft.volume=45&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.lpi.usra.edu/meetings/lpsc2014/pdf/2150.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 6 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 4, 2014 N1 - Last updated - 2015-04-16 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - age; basins; crater retention age; GRAIL; lunar craters; lunar crust; Lunar Orbiter Laser Altimeter; methods; Moon; size; South Pole-Aitken Basin; thickness; topography ER - TY - JOUR T1 - Determining the magnitude of neutron and galactic cosmic ray (GCR) fluxes at the Moon using the Lunar Exploration Neutron Detector (LEND) during the historic space-age era of high GCR flux AN - 1648908040; 2015-010766 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Chin, G AU - Sagdeev, R AU - Milikh, G M AU - Usikov, D AU - Su, J J AU - Boynton, W V AU - Golovin, D AU - Harshman, K AU - Litvak, M AU - Mitrofanov, I G AU - McClanahan, T P AU - Livengood, T AU - Evans, L G AU - Sanin, A AU - Starr, R D AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1704 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - fast neutrons KW - galactic cosmic rays KW - Moon KW - Lunar Reconnaissance Orbiter KW - thermal neutrons KW - Lunar Exploration Neutron Detector KW - galactic cosmic ray flux KW - neutrons KW - epithermal neutrons KW - cosmic rays KW - spallation KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1648908040?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Apatite+in+Allan+Hills+81005+and+the+origin+of+water+in+the+lunar+magma+ocean&rft.au=Robinson%2C+K+L%3BBarnes%2C+J+J%3BTartese%2C+R%3BHallis%2C+L+J%3BFranchi%2C+I+A%3BAnand%2C+Mahesh%3BTaylor%2C+G+J%3BAnonymous&rft.aulast=Robinson&rft.aufirst=K&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1704.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 13 N1 - PubXState - TX N1 - SuppNotes - Accessed on Aug. 5, 2014 N1 - Last updated - 2015-01-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - cosmic rays; epithermal neutrons; fast neutrons; galactic cosmic ray flux; galactic cosmic rays; Lunar Exploration Neutron Detector; Lunar Reconnaissance Orbiter; Moon; neutrons; regolith; spallation; thermal neutrons ER - TY - JOUR T1 - Apollo metric imagery registration to Lunar Orbiter Laser Altimetry AN - 1648908035; 2015-010753 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Nefian, Ara V AU - Coltin, Brian AU - Fong, Terry AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1679 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Lunar Orbiter Laser Altimeter KW - imagery KW - laser methods KW - Moon KW - Lunar Reconnaissance Orbiter KW - Apollo Program KW - altimetry KW - Apollo Metric Camera KW - Gauss-Newton method KW - lidar methods KW - orbital observations KW - algorithms KW - Apollo 15 KW - cameras KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1648908035?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Apollo+metric+imagery+registration+to+Lunar+Orbiter+Laser+Altimetry&rft.au=Nefian%2C+Ara+V%3BColtin%2C+Brian%3BFong%2C+Terry%3BAnonymous&rft.aulast=Nefian&rft.aufirst=Ara&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1679.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 3 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 5, 2014 N1 - Last updated - 2015-04-16 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - algorithms; altimetry; Apollo 15; Apollo Metric Camera; Apollo Program; cameras; Gauss-Newton method; imagery; laser methods; lidar methods; Lunar Orbiter Laser Altimeter; Lunar Reconnaissance Orbiter; Moon; orbital observations ER - TY - JOUR T1 - Photogrammetric control of oblique Apollo 15 metric camera images AN - 1648908003; 2015-010755 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Edmundson, Kenneth L AU - Alexandrov, O AU - Archinal, B A AU - Becker, T L AU - Moratto, Z M AU - Nefian, Ara V AU - Richie, J AU - Robinson, M S AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1915 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Lunar Orbiter Laser Altimeter KW - imagery KW - Moon KW - cartography KW - mapping KW - Apollo Program KW - photogrammetry KW - digital terrain models KW - Apollo Metric Camera KW - topography KW - digital cartography KW - oblique orientation KW - mosaics KW - Apollo 15 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1648908003?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+of+oblique+Apollo+15+metric+camera+images&rft.au=Edmundson%2C+Kenneth+L%3BAlexandrov%2C+O%3BArchinal%2C+B+A%3BBecker%2C+T+L%3BMoratto%2C+Z+M%3BNefian%2C+Ara+V%3BRichie%2C+J%3BRobinson%2C+M+S%3BAnonymous&rft.aulast=Edmundson&rft.aufirst=Kenneth&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1915.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 11 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on Aug. 5, 2014 N1 - Last updated - 2015-01-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Apollo 15; Apollo Metric Camera; Apollo Program; cartography; digital cartography; digital terrain models; imagery; Lunar Orbiter Laser Altimeter; mapping; Moon; mosaics; oblique orientation; photogrammetry; topography ER - TY - JOUR T1 - Shadowing on Apollo 12 solar cells and possible movement of the ALSEP central station AN - 1648907964; 2015-010796 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Berman, Paul A AU - Williams, David R AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2786 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Moon KW - shadowing KW - Apollo 12 Dust Detector KW - Sun KW - solar cells KW - solar radiation KW - Apollo Program KW - Apollo Lunar Surface Experiments Package KW - Apollo 12 KW - ALSEP KW - geometry KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1648907964?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Shadowing+on+Apollo+12+solar+cells+and+possible+movement+of+the+ALSEP+central+station&rft.au=Berman%2C+Paul+A%3BWilliams%2C+David+R%3BAnonymous&rft.aulast=Berman&rft.aufirst=Paul&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2786.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 1 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 8. 2014 N1 - Last updated - 2015-01-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - ALSEP; Apollo 12; Apollo 12 Dust Detector; Apollo Lunar Surface Experiments Package; Apollo Program; geometry; Moon; shadowing; solar cells; solar radiation; Sun ER - TY - JOUR T1 - Recent results from the Lunar Reconnaissance Orbiter mission and plans for a second extended science mission AN - 1648907963; 2015-010782 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Keller, J W AU - Petro, N E AU - McClanahan, T P AU - Vondrak, R R AU - Garvin, J B AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2294 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Lunar Orbiter Laser Altimeter KW - polar regions KW - CRaTER instrument KW - Moon KW - Lunar Reconnaissance Orbiter KW - Lunar Reconnaissance Orbiter Camera KW - differentiation KW - mapping KW - Lunar Exploration Neutron Detector KW - digital terrain models KW - Miniature Radio Frequency instrument KW - Cosmic Ray Telescope for the Effects of Radiation KW - volatiles KW - objectives KW - planning KW - hydrogen KW - permanently shadowed regions KW - Mini-RF instrument KW - Lyman Alpha Mapping Project KW - orbital observations KW - Diviner Lunar Radiometer Experiment KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1648907963?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Recent+results+from+the+Lunar+Reconnaissance+Orbiter+mission+and+plans+for+a+second+extended+science+mission&rft.au=Keller%2C+J+W%3BPetro%2C+N+E%3BMcClanahan%2C+T+P%3BVondrak%2C+R+R%3BGarvin%2C+J+B%3BAnonymous&rft.aulast=Keller&rft.aufirst=J&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2294.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 5 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 7, 2014 N1 - Last updated - 2015-04-16 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Cosmic Ray Telescope for the Effects of Radiation; CRaTER instrument; differentiation; digital terrain models; Diviner Lunar Radiometer Experiment; hydrogen; instruments; Lunar Exploration Neutron Detector; Lunar Orbiter Laser Altimeter; Lunar Reconnaissance Orbiter; Lunar Reconnaissance Orbiter Camera; Lyman Alpha Mapping Project; mapping; Mini-RF instrument; Miniature Radio Frequency instrument; Moon; objectives; orbital observations; permanently shadowed regions; planning; polar regions; volatiles ER - TY - JOUR T1 - LEND CSETN circular and elliptical orbital data processing AN - 1648907941; 2015-010769 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Bodnarik, J G AU - Mitrofanov, I G AU - Boynton, W V AU - Hamara, D K AU - Harshman, K AU - Gardner, A S AU - Chin, G AU - McClanahan, T P AU - Starr, R D AU - Evans, L G AU - Sanin, A AU - Litvak, M AU - Livengood, T AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2925 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Moon KW - Lunar Reconnaissance Orbiter KW - thermal neutrons KW - solar energetic particles KW - altitude KW - data processing KW - Lunar Exploration Neutron Detector KW - LEND KW - neutrons KW - epithermal neutrons KW - cosmic rays KW - orbital observations KW - corrections KW - uncertainty KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1648907941?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=LEND+CSETN+circular+and+elliptical+orbital+data+processing&rft.au=Bodnarik%2C+J+G%3BMitrofanov%2C+I+G%3BBoynton%2C+W+V%3BHamara%2C+D+K%3BHarshman%2C+K%3BGardner%2C+A+S%3BChin%2C+G%3BMcClanahan%2C+T+P%3BStarr%2C+R+D%3BEvans%2C+L+G%3BSanin%2C+A%3BLitvak%2C+M%3BLivengood%2C+T%3BAnonymous&rft.aulast=Bodnarik&rft.aufirst=J&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2925.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 5 N1 - PubXState - TX N1 - SuppNotes - Accessed on Aug. 7, 2014 N1 - Last updated - 2015-04-16 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - altitude; corrections; cosmic rays; data processing; epithermal neutrons; instruments; LEND; Lunar Exploration Neutron Detector; Lunar Reconnaissance Orbiter; Moon; neutrons; orbital observations; solar energetic particles; thermal neutrons; uncertainty ER - TY - JOUR T1 - Moon Mineralogy Mapper views of the Sculptured Hills; implications for the origins of the Station 8 boulder from Apollo 17 AN - 1648907910; 2015-010794 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Petro, Noah E AU - Klima, Rachel L AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2604 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - igneous rocks KW - Station 8 KW - mafic composition KW - Apollo Program KW - landing sites KW - pyroxene group KW - plutonic rocks KW - mineral composition KW - clinopyroxene KW - Moon Mineralogy Mapper KW - sediments KW - Sculptured Hills KW - chain silicates KW - boulders KW - Moon KW - clastic sediments KW - Taurus-Littrow KW - lunar samples KW - metals KW - Sample 78235 KW - thorium KW - orthopyroxene KW - gabbros KW - reflectance KW - actinides KW - Apollo 17 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1648907910?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Moon+Mineralogy+Mapper+views+of+the+Sculptured+Hills%3B+implications+for+the+origins+of+the+Station+8+boulder+from+Apollo+17&rft.au=Petro%2C+Noah+E%3BKlima%2C+Rachel+L%3BAnonymous&rft.aulast=Petro&rft.aufirst=Noah&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2604.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 17 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 8. 2014 N1 - Last updated - 2015-01-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - actinides; Apollo 17; Apollo Program; boulders; chain silicates; clastic sediments; clinopyroxene; gabbros; igneous rocks; landing sites; lunar samples; mafic composition; metals; mineral composition; Moon; Moon Mineralogy Mapper; orthopyroxene; plutonic rocks; pyroxene group; reflectance; Sample 78235; Sculptured Hills; sediments; silicates; Station 8; Taurus-Littrow; thorium ER - TY - JOUR T1 - Lunar debris surge and secondary craters AN - 1648907905; 2015-010743 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Martin-Wells, K S AU - Campbell, D B AU - Campbell, B A AU - Carter, L M AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2673 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - polarization KW - impact features KW - Moon KW - secondary craters KW - Lunar Reconnaissance Orbiter Camera KW - radar methods KW - debris flows KW - ejecta KW - photography KW - lunar craters KW - morphology KW - fragments KW - mass movements KW - impact craters KW - Tycho Crater KW - surges KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1648907905?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+debris+surge+and+secondary+craters&rft.au=Martin-Wells%2C+K+S%3BCampbell%2C+D+B%3BCampbell%2C+B+A%3BCarter%2C+L+M%3BAnonymous&rft.aulast=Martin-Wells&rft.aufirst=K&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2673.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 6 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 4, 2014 N1 - Last updated - 2015-01-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - debris flows; ejecta; fragments; impact craters; impact features; lunar craters; Lunar Reconnaissance Orbiter Camera; mass movements; Moon; morphology; photography; polarization; radar methods; secondary craters; surges; Tycho Crater ER - TY - JOUR T1 - The Mini-RF radar; polarization performance and comparison with prior radar data AN - 1648907866; 2015-010788 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Carter, L M AU - Neish, C D AU - Patterson, G W AU - Bussey, D B J AU - Cahill, J T S AU - Nolan, M C AU - Thomson, B J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2152 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - polarization KW - Green Bank Telescope KW - telescope methods KW - Moon KW - Lunar Reconnaissance Orbiter KW - ground methods KW - data processing KW - radar methods KW - polarimetry KW - Mini-RF KW - calibration KW - Arecibo Observatory KW - mosaics KW - Aristarchus KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1648907866?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+Mini-RF+radar%3B+polarization+performance+and+comparison+with+prior+radar+data&rft.au=Carter%2C+L+M%3BNeish%2C+C+D%3BPatterson%2C+G+W%3BBussey%2C+D+B+J%3BCahill%2C+J+T+S%3BNolan%2C+M+C%3BThomson%2C+B+J%3BAnonymous&rft.aulast=Carter&rft.aufirst=L&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2152.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 5 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 8, 2014 N1 - Last updated - 2015-01-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Arecibo Observatory; Aristarchus; calibration; data processing; Green Bank Telescope; ground methods; instruments; Lunar Reconnaissance Orbiter; Mini-RF; Moon; mosaics; polarimetry; polarization; radar methods; telescope methods ER - TY - JOUR T1 - Detecting low-contrast features in the cosmic ray albedo proton map of the Moon AN - 1648907847; 2015-010768 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Wilson, J K AU - Schwadron, N AU - Spence, H E AU - Golightly, M J AU - Case, A W AU - Smith, S AU - Blake, J B AU - Kasper, J AU - Looper, M D AU - Mazur, J E AU - Townsend, L W AU - Zeitlin, C AU - Stubbs, T J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2206 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - albedo KW - galactic cosmic rays KW - CRaTER instrument KW - Moon KW - Lunar Reconnaissance Orbiter KW - Lunar Prospector Program KW - mapping KW - protons KW - maria KW - Cosmic Ray Telescope for the Effects of Radiation KW - detection KW - cosmic rays KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1648907847?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Detecting+low-contrast+features+in+the+cosmic+ray+albedo+proton+map+of+the+Moon&rft.au=Wilson%2C+J+K%3BSchwadron%2C+N%3BSpence%2C+H+E%3BGolightly%2C+M+J%3BCase%2C+A+W%3BSmith%2C+S%3BBlake%2C+J+B%3BKasper%2C+J%3BLooper%2C+M+D%3BMazur%2C+J+E%3BTownsend%2C+L+W%3BZeitlin%2C+C%3BStubbs%2C+T+J%3BAnonymous&rft.aulast=Wilson&rft.aufirst=J&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2206.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. incl. sketch map N1 - SuppNotes - Accessed on Aug. 7, 2014 N1 - Last updated - 2015-01-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - albedo; Cosmic Ray Telescope for the Effects of Radiation; cosmic rays; CRaTER instrument; detection; galactic cosmic rays; Lunar Prospector Program; Lunar Reconnaissance Orbiter; mapping; maria; Moon; protons ER - TY - JOUR T1 - Ultraviolet characteristics of the lunar Compton-Belkovich region from LRO/LAMP AN - 1648907827; 2015-010778 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Hendrix, A R AU - Mandt, K E AU - Greathouse, T K AU - Retherford, K D AU - Gladstone, G R AU - Hurley, D M AU - Feldman, P D AU - Egan, A F AU - Kaufmann, D E AU - Miles, P F AU - Parker, J W AU - Davis, M W AU - Pryor, W R AU - Bullock, M A AU - Stern, S A AU - Petro, N E AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2790 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - water KW - Moon KW - Lunar Reconnaissance Orbiter KW - Compton-Belkovich region KW - far-ultraviolet spectra KW - lunar highlands KW - maria KW - weathering KW - iron KW - hydration KW - space weathering KW - metals KW - ultraviolet spectra KW - Lyman Alpha Mapping Project KW - spectra KW - orbital observations KW - reflectance KW - opaque minerals KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1648907827?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Ultraviolet+characteristics+of+the+lunar+Compton-Belkovich+region+from+LRO%2FLAMP&rft.au=Hendrix%2C+A+R%3BMandt%2C+K+E%3BGreathouse%2C+T+K%3BRetherford%2C+K+D%3BGladstone%2C+G+R%3BHurley%2C+D+M%3BFeldman%2C+P+D%3BEgan%2C+A+F%3BKaufmann%2C+D+E%3BMiles%2C+P+F%3BParker%2C+J+W%3BDavis%2C+M+W%3BPryor%2C+W+R%3BBullock%2C+M+A%3BStern%2C+S+A%3BPetro%2C+N+E%3BAnonymous&rft.aulast=Hendrix&rft.aufirst=A&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2790.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 10 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 7, 2014 N1 - Last updated - 2015-01-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Compton-Belkovich region; far-ultraviolet spectra; hydration; iron; lunar highlands; Lunar Reconnaissance Orbiter; Lyman Alpha Mapping Project; maria; metals; Moon; opaque minerals; orbital observations; reflectance; space weathering; spectra; ultraviolet spectra; water; weathering ER - TY - JOUR T1 - Merging digital elevation models from the Lunar Orbiter Laser Altimeter and Kaguya Terrain Camera AN - 1648907821; 2015-010754 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Barker, M K AU - Mazarico, E AU - Neumann, G A AU - Smith, D E AU - Zuber, M T AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1635 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Lunar Orbiter Laser Altimeter KW - Moon KW - Lunar Reconnaissance Orbiter KW - SELENE Mission KW - elevation KW - Kaguya Terrain Camera KW - landing sites KW - geodesy KW - digital terrain models KW - Chang'E 3 Mission KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1648907821?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Merging+digital+elevation+models+from+the+Lunar+Orbiter+Laser+Altimeter+and+Kaguya+Terrain+Camera&rft.au=Barker%2C+M+K%3BMazarico%2C+E%3BNeumann%2C+G+A%3BSmith%2C+D+E%3BZuber%2C+M+T%3BAnonymous&rft.aulast=Barker&rft.aufirst=M&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1635.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 3 N1 - PubXState - TX N1 - Document feature - illus. incl. sketch maps N1 - SuppNotes - Accessed on Aug. 5, 2014 N1 - Last updated - 2015-01-29 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Chang'E 3 Mission; digital terrain models; elevation; geodesy; Kaguya Terrain Camera; landing sites; Lunar Orbiter Laser Altimeter; Lunar Reconnaissance Orbiter; Moon; SELENE Mission ER - TY - JOUR T1 - Widepsread exposures of small scale spinel-rich pyroclastic deposits in Sinus Aestuum AN - 1641013375; 2015-002252 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Sunshine, Jessica M AU - Petro, Noah E AU - Besse, Sebastien AU - Gaddis, Lisa R AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2297 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - volcanic rocks KW - impact features KW - Gambart Crater KW - Moon KW - igneous rocks KW - Kaguya Terrain Camera KW - spinel KW - mapping KW - excavations KW - ejecta KW - Copernicus Crater KW - lunar craters KW - spatial distribution KW - pyroclastics KW - volcanism KW - metals KW - Moon Mineralogy Mapper KW - thorium KW - oxides KW - impact craters KW - actinides KW - Sinus Aestuum KW - Eratosthenes Crater KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641013375?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Widepsread+exposures+of+small+scale+spinel-rich+pyroclastic+deposits+in+Sinus+Aestuum&rft.au=Sunshine%2C+Jessica+M%3BPetro%2C+Noah+E%3BBesse%2C+Sebastien%3BGaddis%2C+Lisa+R%3BAnonymous&rft.aulast=Sunshine&rft.aufirst=Jessica&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2297.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 14 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 29, 2014 N1 - Last updated - 2014-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - actinides; Copernicus Crater; ejecta; Eratosthenes Crater; excavations; Gambart Crater; igneous rocks; impact craters; impact features; Kaguya Terrain Camera; lunar craters; mapping; metals; Moon; Moon Mineralogy Mapper; oxides; pyroclastics; Sinus Aestuum; spatial distribution; spinel; thorium; volcanic rocks; volcanism ER - TY - JOUR T1 - Mini-RF and the curious case of Cabeus Crater AN - 1641013372; 2015-002323 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Patterson, G W AU - Bussey, D B J AU - Stickle, A M AU - Cahill, J T S AU - Carter, L M AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2765 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - imagery KW - Moon KW - Lunar Reconnaissance Orbiter KW - Cabeus Crater KW - circular polarization ratio KW - radar methods KW - Kepler Crater KW - ejecta KW - lunar craters KW - phase angle KW - dielectric properties KW - Mini-RF instrument KW - orbital observations KW - bistatic radar KW - backscattering KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641013372?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Mini-RF+and+the+curious+case+of+Cabeus+Crater&rft.au=Patterson%2C+G+W%3BBussey%2C+D+B+J%3BStickle%2C+A+M%3BCahill%2C+J+T+S%3BCarter%2C+L+M%3BAnonymous&rft.aulast=Patterson&rft.aufirst=G&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2765.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 10 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 5, 2014 N1 - Last updated - 2014-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - backscattering; bistatic radar; Cabeus Crater; circular polarization ratio; dielectric properties; ejecta; imagery; Kepler Crater; lunar craters; Lunar Reconnaissance Orbiter; Mini-RF instrument; Moon; orbital observations; phase angle; radar methods ER - TY - JOUR T1 - A comparison of anorthositic lunar lithologies; variations on the FAN theme AN - 1641011890; 2015-001061 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Nyquist, L E AU - Shih, C Y AU - Yamaguchi, A AU - Mittlefehldt, D W AU - Peng, Z X AU - Park, J AU - Herzog, G F AU - Shirai, N AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1125 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - lunar meteorites KW - stony meteorites KW - ion probe data KW - isotopes KW - igneous rocks KW - mass spectra KW - stable isotopes KW - iron KW - meteorites KW - radioactive isotopes KW - plutonic rocks KW - chronology KW - Sm-147/Nd-144 KW - spectra KW - samarium KW - rare earths KW - trace elements KW - breccia KW - Moon KW - isotope ratios KW - clasts KW - isochrons KW - achondrites KW - anorthosite KW - Sample 64435 KW - Nd-144/Nd-143 KW - ICP mass spectra KW - lunar samples KW - Nd-144/Nd-142 KW - metals KW - neodymium KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641011890?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=A+comparison+of+anorthositic+lunar+lithologies%3B+variations+on+the+FAN+theme&rft.au=Nyquist%2C+L+E%3BShih%2C+C+Y%3BYamaguchi%2C+A%3BMittlefehldt%2C+D+W%3BPeng%2C+Z+X%3BPark%2C+J%3BHerzog%2C+G+F%3BShirai%2C+N%3BAnonymous&rft.aulast=Nyquist&rft.aufirst=L&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1125.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 12 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 12, 2014 N1 - Last updated - 2014-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; anorthosite; breccia; chronology; clasts; ICP mass spectra; igneous rocks; ion probe data; iron; isochrons; isotope ratios; isotopes; lunar meteorites; lunar samples; mass spectra; metals; meteorites; Moon; Nd-144/Nd-142; Nd-144/Nd-143; neodymium; plutonic rocks; radioactive isotopes; rare earths; samarium; Sample 64435; Sm-147/Nd-144; spectra; stable isotopes; stony meteorites; trace elements ER - TY - JOUR T1 - Coordinated chemical and isotopic imaging of Bells (CM2) Meteorite matrix AN - 1641011839; 2015-001025 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Clemett, S J AU - Messenger, S AU - Nakamura-Messenger, K AU - Thomas-Keprta, K L AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2896 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - imagery KW - stony meteorites KW - ion probe data KW - isotopes KW - enrichment KW - mass spectra KW - stable isotopes KW - nitrogen KW - spatial distribution KW - meteorites KW - fluorescence KW - electromagnetic radiation KW - carbon KW - spectra KW - chondrites KW - chemical composition KW - Bells Meteorite KW - N-15/N-14 KW - in situ KW - isotope ratios KW - matrix KW - C-13/C-12 KW - anomalies KW - carbonaceous chondrites KW - new methods KW - ultraviolet radiation KW - organic compounds KW - two-step laser mass spectroscopy 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/1641011839?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Coordinated+chemical+and+isotopic+imaging+of+Bells+%28CM2%29+Meteorite+matrix&rft.au=Clemett%2C+S+J%3BMessenger%2C+S%3BNakamura-Messenger%2C+K%3BThomas-Keprta%2C+K+L%3BAnonymous&rft.aulast=Clemett&rft.aufirst=S&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2896.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 12 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 9, 2014 N1 - Last updated - 2014-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - anomalies; Bells Meteorite; C-13/C-12; carbon; carbonaceous chondrites; chemical composition; chondrites; CM chondrites; electromagnetic radiation; enrichment; fluorescence; imagery; in situ; ion probe data; isotope ratios; isotopes; mass spectra; matrix; meteorites; N-15/N-14; NanoSIMS; new methods; nitrogen; organic compounds; spatial distribution; spectra; stable isotopes; stony meteorites; two-step laser mass spectroscopy; ultraviolet radiation ER - TY - JOUR T1 - The deuterium to hydrogen ratio in the water that formed the Yellowknife Bay mudstones in Gale Crater AN - 1641011633; 2015-002335 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Mahaffy, Paul R AU - Brunner, A E AU - Webster, C R AU - Atreya, S K AU - McAdam, A AU - Stern, J AU - Leshin, L A AU - Navarro-Gonzalez, R AU - Jones, J H AU - Kashyap, S AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1251 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Yellowknife Bay KW - water KW - quadrupole mass spectra KW - mudstone KW - isotopes KW - isotope ratios KW - mass spectra KW - Mars KW - stable isotopes KW - Sheepbed Mudstone KW - Gale Crater KW - terrestrial planets KW - planets KW - sedimentary rocks KW - D/H KW - SAM instrument KW - hydrogen KW - spectra KW - clastic rocks KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641011633?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+deuterium+to+hydrogen+ratio+in+the+water+that+formed+the+Yellowknife+Bay+mudstones+in+Gale+Crater&rft.au=Mahaffy%2C+Paul+R%3BBrunner%2C+A+E%3BWebster%2C+C+R%3BAtreya%2C+S+K%3BMcAdam%2C+A%3BStern%2C+J%3BLeshin%2C+L+A%3BNavarro-Gonzalez%2C+R%3BJones%2C+J+H%3BKashyap%2C+S%3BAnonymous&rft.aulast=Mahaffy&rft.aufirst=Paul&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1251.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 16 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 5, 2014 N1 - Last updated - 2015-04-16 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - clastic rocks; D/H; Gale Crater; hydrogen; isotope ratios; isotopes; Mars; mass spectra; mudstone; planets; quadrupole mass spectra; SAM instrument; sedimentary rocks; Sheepbed Mudstone; spectra; stable isotopes; terrestrial planets; water; Yellowknife Bay ER - TY - JOUR T1 - Tomographic reconstruction of a sequence of eruptive events in Elysium Planitia, Mars AN - 1641011600; 2015-002261 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Morgan, G A AU - Campbell, B A AU - Carter, L M AU - Plaut, J J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2377 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - lava flows KW - three-dimensional models KW - SHARAD KW - radar methods KW - Mars Reconnaissance Orbiter KW - Mars KW - terrestrial planets KW - visualization KW - planets KW - Amazonian KW - volcanism KW - eruptions KW - Elysium KW - volume KW - MOLA KW - basaltic composition KW - buried features KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641011600?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Tomographic+reconstruction+of+a+sequence+of+eruptive+events+in+Elysium+Planitia%2C+Mars&rft.au=Morgan%2C+G+A%3BCampbell%2C+B+A%3BCarter%2C+L+M%3BPlaut%2C+J+J%3BAnonymous&rft.aulast=Morgan&rft.aufirst=G&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2377.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 10 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 29, 2014 N1 - Last updated - 2015-04-16 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Amazonian; basaltic composition; buried features; Elysium; eruptions; lava flows; Mars; Mars Reconnaissance Orbiter; MOLA; planets; radar methods; SHARAD; terrestrial planets; three-dimensional models; visualization; volcanism; volume ER - TY - JOUR T1 - Carbon and sulfur isotopic composition of Yellowknife Bay sediments; measurements by the sample analysis at Mars (SAM) quadrupole mass spectrometer AN - 1641011596; 2015-002336 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Franz, Heather B AU - Mahaffy, Paul R AU - Stern, J AU - Eigenbrode, J L AU - Steele, A AU - Ming, D AU - McAdam, A AU - Freissinet, Caroline AU - Glavin, Daniel P AU - Archer, P, Jr AU - Brunner, A E AU - Conrad, P AU - Grotzinger, J P AU - Jones, J H AU - Leshin, L A AU - McKay, C AU - Miller, K AU - Morris, R AU - Navarro-Gonzalez, R AU - Owen, T AU - Summons, R E AU - Sutter, B AU - Webster, C R AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2184 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - isotopes KW - mass spectra KW - Mars KW - stable isotopes KW - carbon dioxide KW - sedimentary rocks KW - carbon KW - Curiosity Rover KW - spectra KW - Yellowknife Bay KW - sulfur dioxide KW - quadrupole mass spectra KW - mudstone KW - isotope ratios KW - C-13/C-12 KW - Sample Analysis at Mars instrument suite KW - terrestrial planets KW - planets KW - volatiles KW - S-34/S-32 KW - evolved gas analysis KW - SAM instrument KW - Mars Science Laboratory KW - sulfur KW - clastic rocks KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641011596?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Carbon+and+sulfur+isotopic+composition+of+Yellowknife+Bay+sediments%3B+measurements+by+the+sample+analysis+at+Mars+%28SAM%29+quadrupole+mass+spectrometer&rft.au=Franz%2C+Heather+B%3BMahaffy%2C+Paul+R%3BStern%2C+J%3BEigenbrode%2C+J+L%3BSteele%2C+A%3BMing%2C+D%3BMcAdam%2C+A%3BFreissinet%2C+Caroline%3BGlavin%2C+Daniel+P%3BArcher%2C+P%2C+Jr%3BBrunner%2C+A+E%3BConrad%2C+P%3BGrotzinger%2C+J+P%3BJones%2C+J+H%3BLeshin%2C+L+A%3BMcKay%2C+C%3BMiller%2C+K%3BMorris%2C+R%3BNavarro-Gonzalez%2C+R%3BOwen%2C+T%3BSummons%2C+R+E%3BSutter%2C+B%3BWebster%2C+C+R%3BAnonymous&rft.aulast=Franz&rft.aufirst=Heather&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2184.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 18 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 5, 2014 N1 - Last updated - 2015-04-16 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - C-13/C-12; carbon; carbon dioxide; clastic rocks; Curiosity Rover; evolved gas analysis; isotope ratios; isotopes; Mars; Mars Science Laboratory; mass spectra; mudstone; planets; quadrupole mass spectra; S-34/S-32; SAM instrument; Sample Analysis at Mars instrument suite; sedimentary rocks; spectra; stable isotopes; sulfur; sulfur dioxide; terrestrial planets; volatiles; Yellowknife Bay ER - TY - JOUR T1 - The Gale Crater mound in a regional geologic setting; comparison study of wind erosion in Gale Crater and within a 1000 km radius AN - 1641011586; 2015-002282 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Dapremont, A AU - Allen, C AU - Runyon, C AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1288 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - orientation KW - impact features KW - erosion KW - wind erosion KW - mounds KW - Mars Reconnaissance Orbiter KW - Mars KW - global change KW - Hesperian KW - Context Camera KW - climate change KW - Gale Crater KW - terrestrial planets KW - planets KW - yardangs KW - High REsolution Imaging Science Experiment KW - Medusae Fossae Formation KW - Amazonian KW - mosaics KW - impact craters KW - HiRISE KW - unconformities KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641011586?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+Gale+Crater+mound+in+a+regional+geologic+setting%3B+comparison+study+of+wind+erosion+in+Gale+Crater+and+within+a+1000+km+radius&rft.au=Dapremont%2C+A%3BAllen%2C+C%3BRunyon%2C+C%3BAnonymous&rft.aulast=Dapremont&rft.aufirst=A&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1288.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 9 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 2, 2014 N1 - Last updated - 2014-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Amazonian; climate change; Context Camera; erosion; Gale Crater; global change; Hesperian; High REsolution Imaging Science Experiment; HiRISE; impact craters; impact features; Mars; Mars Reconnaissance Orbiter; Medusae Fossae Formation; mosaics; mounds; orientation; planets; terrestrial planets; unconformities; wind erosion; yardangs ER - TY - JOUR T1 - Evidence from hydrogen isotopes in meteorites for a Martian permafrost AN - 1641011478; 2015-002333 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Usui, Tomohiro AU - Jones, J H AU - Simon, J I AU - Alexander, C M O AU - Wang, J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1623 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - permafrost KW - stony meteorites KW - ion probe data KW - isotopes KW - Martian meteorites KW - mass spectra KW - Mars KW - mapping KW - landforms KW - Hesperian KW - stable isotopes KW - SNC Meteorites KW - meteorites KW - dielectric properties KW - mass balance KW - ice KW - ground ice KW - spectra KW - isotope ratios KW - surface water KW - achondrites KW - terrestrial planets KW - planets KW - D/H KW - hydrogen KW - fluvial features KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641011478?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+from+hydrogen+isotopes+in+meteorites+for+a+Martian+permafrost&rft.au=Usui%2C+Tomohiro%3BJones%2C+J+H%3BSimon%2C+J+I%3BAlexander%2C+C+M+O%3BWang%2C+J%3BAnonymous&rft.aulast=Usui&rft.aufirst=Tomohiro&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1623.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 16 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 5, 2014 N1 - Last updated - 2014-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; D/H; dielectric properties; fluvial features; ground ice; Hesperian; hydrogen; ice; ion probe data; isotope ratios; isotopes; landforms; mapping; Mars; Martian meteorites; mass balance; mass spectra; meteorites; permafrost; planets; SNC Meteorites; spectra; stable isotopes; stony meteorites; surface water; terrestrial planets ER - TY - JOUR T1 - Distribution of amino acids in lunar regolith AN - 1641011465; 2015-002315 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Elsila, Jamie E AU - Callahan, M P AU - Glavin, Daniel P AU - Dworkin, J P AU - Noble, S K AU - Gibson, E K, Jr AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1127 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - experimental studies KW - maturity KW - Moon KW - solar wind KW - kyanite KW - hydrolysis KW - distribution KW - nesosilicates KW - laboratory studies KW - curation KW - organic compounds KW - organic acids KW - lunar samples KW - detection KW - amino acids KW - orthosilicates KW - hydrogen cyanide KW - regolith KW - lunar soils KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641011465?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Distribution+of+amino+acids+in+lunar+regolith&rft.au=Elsila%2C+Jamie+E%3BCallahan%2C+M+P%3BGlavin%2C+Daniel+P%3BDworkin%2C+J+P%3BNoble%2C+S+K%3BGibson%2C+E+K%2C+Jr%3BAnonymous&rft.aulast=Elsila&rft.aufirst=Jamie&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1127.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 12 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on June 3, 2014 N1 - Last updated - 2014-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - amino acids; curation; detection; distribution; experimental studies; hydrogen cyanide; hydrolysis; kyanite; laboratory studies; lunar samples; lunar soils; maturity; Moon; nesosilicates; organic acids; organic compounds; orthosilicates; regolith; silicates; solar wind ER - TY - JOUR T1 - Mystery of intrusion history at Syrtis Major; clues from multiple data sets AN - 1641011448; 2015-002256 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Lillis, R J AU - Dufek, J AU - Kiefer, W S AU - Bleacher, J E AU - Manga, M AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2135 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - thermal demagnetization KW - demagnetization KW - loading KW - magmatism KW - flexure KW - Mars KW - Nili Patera KW - magnetic field KW - terrestrial planets KW - calderas KW - planets KW - gravity anomalies KW - intrusions KW - gravity field KW - volcanic features KW - topography KW - mineral composition KW - Syrtis Major KW - eruptions KW - petrography KW - crystallization KW - magma chambers KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641011448?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Mystery+of+intrusion+history+at+Syrtis+Major%3B+clues+from+multiple+data+sets&rft.au=Lillis%2C+R+J%3BDufek%2C+J%3BKiefer%2C+W+S%3BBleacher%2C+J+E%3BManga%2C+M%3BAnonymous&rft.aulast=Lillis&rft.aufirst=R&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2135.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 10 N1 - PubXState - TX N1 - Document feature - illus. incl. sketch maps N1 - SuppNotes - Accessed on May 29, 2014 N1 - Last updated - 2014-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - calderas; crystallization; demagnetization; eruptions; flexure; gravity anomalies; gravity field; intrusions; loading; magma chambers; magmatism; magnetic field; Mars; mineral composition; Nili Patera; petrography; planets; Syrtis Major; terrestrial planets; thermal demagnetization; topography; volcanic features ER - TY - JOUR T1 - Upper-latitude hydration of the Moon's southern poleward-facing slopes AN - 1641011304; 2015-002324 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - McClanahan, Timothy P AU - Mitrofanov, I G AU - Boynton, W V AU - Chin, G AU - Starr, R D AU - Evans, L G AU - Sanin, A AU - Livengood, T A AU - Sagdeev (Sagdeyev), R AU - Bodnarik, J AU - Hamara, D AU - Su, J J AU - Nandikotkur, G AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2931 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Lunar Prospector Neutron Spectrometer KW - Moon KW - Lunar Reconnaissance Orbiter KW - slopes KW - Lunar Prospector Program KW - mapping KW - Lunar Exploration Neutron Detector KW - distribution KW - hydration KW - neutrons KW - neutron probe data KW - hydrogen KW - epithermal neutrons KW - latitude KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641011304?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Scientific+rationale+of+a+Saturn+probe+mission&rft.au=Mousis%2C+Olivier%3BFletcher%2C+L+N%3BLebreton%2C+J+P%3BWurz%2C+P%3BCavalie%2C+T%3BCoustenis%2C+Athena%3BAtkinson%2C+D+H%3BAtreya%2C+S+K%3BGautier%2C+D%3BGuillot%2C+T%3BLunine%2C+J+I%3BMarty%2C+B%3BMorse%2C+A+D%3BReh%2C+K+R%3BSimon-Miller%2C+A%3BSpilker%2C+T%3BWaite%2C+J+H%3BAnonymous&rft.aulast=Mousis&rft.aufirst=Olivier&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2931.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 10 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 5, 2014 N1 - Last updated - 2014-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - distribution; epithermal neutrons; hydration; hydrogen; latitude; Lunar Exploration Neutron Detector; Lunar Prospector Neutron Spectrometer; Lunar Prospector Program; Lunar Reconnaissance Orbiter; mapping; Moon; neutron probe data; neutrons; slopes ER - TY - JOUR T1 - Apollo 16 evolved lithology sodic ferrogabbro AN - 1641011253; 2015-002271 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Zeigler, Ryan A AU - Jolliff, B L AU - Korotev, R L AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2005 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - igneous rocks KW - olivine group KW - lunar breccia KW - Apollo Program KW - iron KW - electron probe data KW - pyroxene group KW - plutonic rocks KW - diorites KW - olivine KW - metamorphic rocks KW - orthosilicates KW - framework silicates KW - rare earths KW - chemical composition KW - ferrodiorite KW - chain silicates KW - plagioclase KW - breccia KW - impactites KW - Moon KW - incompatible elements KW - Sample 62243 KW - Sample 67915 KW - alkali metals KW - Sample 62283 KW - impact breccia KW - clasts KW - nesosilicates KW - metals KW - petrography KW - gabbros KW - feldspar group KW - Apollo 16 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641011253?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Apollo+16+evolved+lithology+sodic+ferrogabbro&rft.au=Zeigler%2C+Ryan+A%3BJolliff%2C+B+L%3BKorotev%2C+R+L%3BAnonymous&rft.aulast=Zeigler&rft.aufirst=Ryan&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2005.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 11 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 2, 2014 N1 - Last updated - 2014-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alkali metals; Apollo 16; Apollo Program; breccia; chain silicates; chemical composition; clasts; diorites; electron probe data; feldspar group; ferrodiorite; framework silicates; gabbros; igneous rocks; impact breccia; impactites; incompatible elements; iron; lunar breccia; metals; metamorphic rocks; Moon; nesosilicates; olivine; olivine group; orthosilicates; petrography; plagioclase; plutonic rocks; pyroxene group; rare earths; Sample 62243; Sample 62283; Sample 67915; silicates ER - TY - JOUR T1 - Origin of chlorobenzene detected by the Curiosity Rover in Yellowknife Bay; evidence for Martian organics in the Sheepbed mudstone AN - 1641011232; 2015-002329 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Glavin, Daniel P AU - Freissinet, Caroline AU - Eigenbrode, J L AU - Miller, K AU - Martin, M AU - Summons, R E AU - Steele, A AU - Franz, H B AU - Archer, D AU - Brinckerhoff, W AU - Brunner, A E AU - Buch, A AU - Cabane, M AU - Coll, P AU - Conrad, P AU - Coscia, D AU - Dworkin, J AU - Grotzinger, J P AU - Kashyap, S AU - Mahaffy, Paul R AU - McKay, C AU - Ming, D AU - Navarro-Gonzalez, R AU - Sutter, B AU - Szopa, C AU - Teinturier, S AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1157 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - chlorinated hydrocarbons KW - chlorobenzene KW - desorption KW - gas chromatograms KW - mass spectra KW - Mars KW - sedimentary rocks KW - chemical reactions KW - pyrolysis KW - Curiosity Rover KW - halogenated hydrocarbons KW - spectra KW - Yellowknife Bay KW - mudstone KW - oxidation KW - Sample Analysis at Mars instrument suite KW - Sheepbed Mudstone KW - perchlorate KW - terrestrial planets KW - planets KW - volatiles KW - sample preparation KW - organic compounds KW - detection KW - evolved gas analysis KW - SAM instrument KW - chromatograms KW - hydrocarbons KW - clastic rocks KW - aromatic hydrocarbons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641011232?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Origin+of+chlorobenzene+detected+by+the+Curiosity+Rover+in+Yellowknife+Bay%3B+evidence+for+Martian+organics+in+the+Sheepbed+mudstone&rft.au=Glavin%2C+Daniel+P%3BFreissinet%2C+Caroline%3BEigenbrode%2C+J+L%3BMiller%2C+K%3BMartin%2C+M%3BSummons%2C+R+E%3BSteele%2C+A%3BFranz%2C+H+B%3BArcher%2C+D%3BBrinckerhoff%2C+W%3BBrunner%2C+A+E%3BBuch%2C+A%3BCabane%2C+M%3BColl%2C+P%3BConrad%2C+P%3BCoscia%2C+D%3BDworkin%2C+J%3BGrotzinger%2C+J+P%3BKashyap%2C+S%3BMahaffy%2C+Paul+R%3BMcKay%2C+C%3BMing%2C+D%3BNavarro-Gonzalez%2C+R%3BSutter%2C+B%3BSzopa%2C+C%3BTeinturier%2C+S%3BAnonymous&rft.aulast=Glavin&rft.aufirst=Daniel&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1157.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 8 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on June 5, 2014 N1 - Last updated - 2015-04-16 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - aromatic hydrocarbons; chemical reactions; chlorinated hydrocarbons; chlorobenzene; chromatograms; clastic rocks; Curiosity Rover; desorption; detection; evolved gas analysis; gas chromatograms; halogenated hydrocarbons; hydrocarbons; Mars; mass spectra; mudstone; organic compounds; oxidation; perchlorate; planets; pyrolysis; SAM instrument; Sample Analysis at Mars instrument suite; sample preparation; sedimentary rocks; Sheepbed Mudstone; spectra; terrestrial planets; volatiles; Yellowknife Bay ER - TY - JOUR T1 - The influence of evaporation fronts on the global evolution of solids and gas in the protoplanetary nebula AN - 1641011211; 2015-002295 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Estrada, P R AU - Cuzzi, J N AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2642 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - water KW - solar system KW - diffusion KW - gaseous phase KW - density KW - condensation KW - grain size KW - simulation KW - protoplanetary disk KW - solid phase KW - solar nebula KW - models KW - mass KW - volatiles KW - evaporation KW - cosmic dust KW - radial transport KW - transport KW - ice KW - particles KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641011211?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+influence+of+evaporation+fronts+on+the+global+evolution+of+solids+and+gas+in+the+protoplanetary+nebula&rft.au=Estrada%2C+P+R%3BCuzzi%2C+J+N%3BAnonymous&rft.aulast=McAdam&rft.aufirst=Amy&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2642.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 13 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 3, 2014 N1 - Last updated - 2014-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - condensation; cosmic dust; density; diffusion; evaporation; gaseous phase; grain size; ice; mass; models; particles; protoplanetary disk; radial transport; simulation; solar nebula; solar system; solid phase; transport; volatiles; water ER - TY - JOUR T1 - Isotope evidence for links between sulfate assimilation and oxidation of Martian melts from meteorites MIL 03346, MIL 090030, MIL 090032, & MIL 090136 AN - 1641011181; 2015-002337 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Dottin, J W, III AU - Farquhar, J AU - Hoek, J AU - Franz, H B AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2420 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - isotopes KW - Mars KW - stable isotopes KW - melts KW - assimilation KW - meteorites KW - MIL 090136 KW - S-36/S-32 KW - MIL 03346 KW - oxides KW - Miller Range Meteorites KW - MIL 090030 KW - lava flows KW - sulfates KW - isotope ratios KW - oxidation KW - mesostasis KW - MIL 090032 KW - anomalies KW - terrestrial planets KW - planets KW - S-34/S-32 KW - magmas KW - sulfur KW - S-33/S-32 KW - magnetite KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641011181?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Isotope+evidence+for+links+between+sulfate+assimilation+and+oxidation+of+Martian+melts+from+meteorites+MIL+03346%2C+MIL+090030%2C+MIL+090032%2C+%26amp%3B+MIL+090136&rft.au=Dottin%2C+J+W%2C+III%3BFarquhar%2C+J%3BHoek%2C+J%3BFranz%2C+H+B%3BAnonymous&rft.aulast=Dottin&rft.aufirst=J&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2420.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 12 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on June 6, 2014 N1 - Last updated - 2014-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - anomalies; assimilation; isotope ratios; isotopes; lava flows; magmas; magnetite; Mars; melts; mesostasis; meteorites; MIL 03346; MIL 090030; MIL 090032; MIL 090136; Miller Range Meteorites; oxidation; oxides; planets; S-33/S-32; S-34/S-32; S-36/S-32; stable isotopes; sulfates; sulfur; terrestrial planets ER - TY - JOUR T1 - Mass dependency of isotope fractionation of gases under thermal gradient and its possible implications for planetary atmosphere escaping process AN - 1641011179; 2015-002334 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Sun, Tao AU - Niles, Paul AU - Bao, Huiming AU - Socki, Richard AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2477 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - isotope fractionation KW - diffusion KW - pressure KW - oxygen KW - isotopes KW - isotope ratios KW - atmosphere KW - O-18/O-16 KW - Ne-22/Ne-21 KW - Ne-22/Ne-20 KW - high pressure KW - stable isotopes KW - gases KW - thermal gradient KW - planets KW - thermal diffusivity KW - noble gases KW - neon KW - O-17/O-16 KW - 04:Extraterrestrial geology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641011179?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+dependency+of+isotope+fractionation+of+gases+under+thermal+gradient+and+its+possible+implications+for+planetary+atmosphere+escaping+process&rft.au=Sun%2C+Tao%3BNiles%2C+Paul%3BBao%2C+Huiming%3BSocki%2C+Richard%3BAnonymous&rft.aulast=Sun&rft.aufirst=Tao&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2477.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 10 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 5, 2014 N1 - Last updated - 2014-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - atmosphere; diffusion; gases; high pressure; isotope fractionation; isotope ratios; isotopes; Ne-22/Ne-20; Ne-22/Ne-21; neon; noble gases; O-17/O-16; O-18/O-16; oxygen; planets; pressure; stable isotopes; thermal diffusivity; thermal gradient ER - TY - JOUR T1 - Lunar polar craters; icy, rough or just sloping? AN - 1641011140; 2015-002325 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Eke, V R AU - Bartram, S A AU - Lane, D A AU - Smith, D AU - Teodoro, L F A AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1853 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - water KW - Lunar Orbiter Laser Altimeter KW - polar regions KW - Moon KW - slopes KW - roughness KW - circular polarization ratio KW - radar methods KW - anomalies KW - Chandrayaan-1 Mission KW - digital terrain models KW - lunar craters KW - volatiles KW - topography KW - SAR KW - mosaics KW - ice KW - permanently shadowed regions KW - Mini-SAR KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641011140?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+polar+craters%3B+icy%2C+rough+or+just+sloping%3F&rft.au=Eke%2C+V+R%3BBartram%2C+S+A%3BLane%2C+D+A%3BSmith%2C+D%3BTeodoro%2C+L+F+A%3BAnonymous&rft.aulast=Eke&rft.aufirst=V&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1853.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 5 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 5, 2014 N1 - Last updated - 2015-04-16 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - anomalies; Chandrayaan-1 Mission; circular polarization ratio; digital terrain models; ice; lunar craters; Lunar Orbiter Laser Altimeter; Mini-SAR; Moon; mosaics; permanently shadowed regions; polar regions; radar methods; roughness; SAR; slopes; topography; volatiles; water ER - TY - JOUR T1 - Vesicles in Apollo 15 green glasses; the nature of ancient lunar gases AN - 1641010940; 2015-001009 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Thomas-Keprta, K L AU - Clemett, S J AU - Berger, Eve L AU - Rahman, Z AU - McKay, D S AU - Gibson, E K AU - Wentworth, S J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2507 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - volcanic rocks KW - glasses KW - igneous rocks KW - Apollo Program KW - iron KW - green glass KW - volatile elements KW - reduction KW - agglutinates KW - vesicular texture KW - gaseous phase KW - Moon KW - textures KW - oxidation KW - bubbles KW - Sample 15411 KW - electron microscopy data KW - native elements KW - gases KW - graphite KW - volatiles KW - volcanic glass KW - metals KW - magmas KW - hydrogen KW - volcanoes KW - Apollo 15 KW - sulfides KW - nanoparticles KW - SEM data KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641010940?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Vesicles+in+Apollo+15+green+glasses%3B+the+nature+of+ancient+lunar+gases&rft.au=Thomas-Keprta%2C+K+L%3BClemett%2C+S+J%3BBerger%2C+Eve+L%3BRahman%2C+Z%3BMcKay%2C+D+S%3BGibson%2C+E+K%3BWentworth%2C+S+J%3BAnonymous&rft.aulast=Thomas-Keprta&rft.aufirst=K&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2507.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 9 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 6, 2014 N1 - Last updated - 2014-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - agglutinates; Apollo 15; Apollo Program; bubbles; electron microscopy data; gaseous phase; gases; glasses; graphite; green glass; hydrogen; igneous rocks; iron; magmas; metals; Moon; nanoparticles; native elements; oxidation; reduction; Sample 15411; SEM data; sulfides; textures; vesicular texture; volatile elements; volatiles; volcanic glass; volcanic rocks; volcanoes ER - TY - JOUR T1 - False positives for extrasolar life, and how to account for them AN - 1641010892; 2015-001077 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Domagal-Goldman, Shawn D AU - Segura, Antigona AU - Claire, M W AU - Robinson, T D AU - Meadows, Victoria S AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2109 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - methane KW - oxygen KW - extrasolar planets KW - photochemistry KW - aliphatic hydrocarbons KW - atmosphere KW - astrobiology KW - alkanes KW - simulation KW - biomarkers KW - ultraviolet radiation KW - gases KW - carbon dioxide KW - models KW - planets KW - ozone KW - organic compounds KW - detection KW - electromagnetic radiation KW - abiotic processes KW - hydrocarbons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641010892?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=False+positives+for+extrasolar+life%2C+and+how+to+account+for+them&rft.au=Domagal-Goldman%2C+Shawn+D%3BSegura%2C+Antigona%3BClaire%2C+M+W%3BRobinson%2C+T+D%3BMeadows%2C+Victoria+S%3BAnonymous&rft.aulast=Domagal-Goldman&rft.aufirst=Shawn&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2109.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 13, 2014 N1 - Last updated - 2014-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - abiotic processes; aliphatic hydrocarbons; alkanes; astrobiology; atmosphere; biomarkers; carbon dioxide; detection; electromagnetic radiation; extrasolar planets; gases; hydrocarbons; methane; models; organic compounds; oxygen; ozone; photochemistry; planets; simulation; ultraviolet radiation ER - TY - JOUR T1 - Primitive fine-grained matrix in the unequilibrated enstatite chondrites AN - 1641010819; 2015-001033 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Weisberg, M K AU - Zolensky, M E AU - Kimura, M AU - Ebel, D S AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1551 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - stony meteorites KW - amorphous materials KW - matrix KW - EL chondrites KW - electron microscopy data KW - ALHA 81189 KW - unequilibrated enstatite chondrites KW - TEM data KW - meteorites KW - EH chondrites KW - Allan Hills Meteorites KW - silica KW - fine-grained materials KW - chondrules KW - enstatite chondrites KW - chondrites KW - SEM data KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641010819?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Primitive+fine-grained+matrix+in+the+unequilibrated+enstatite+chondrites&rft.au=Weisberg%2C+M+K%3BZolensky%2C+M+E%3BKimura%2C+M%3BEbel%2C+D+S%3BAnonymous&rft.aulast=Weisberg&rft.aufirst=M&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1551.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 15 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 9, 2014 N1 - Last updated - 2015-04-16 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - ALHA 81189; Allan Hills Meteorites; amorphous materials; chondrites; chondrules; EH chondrites; EL chondrites; electron microscopy data; enstatite chondrites; fine-grained materials; matrix; meteorites; SEM data; silica; stony meteorites; TEM data; unequilibrated enstatite chondrites ER - TY - JOUR T1 - Manganese-chromium ages of aqueous alteration of unequilibrated ordinary chondrites AN - 1641010800; 2015-001031 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Doyle, P M AU - Krot, A N AU - Nagashima, K AU - Dobrica, E AU - Brearley, A J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1726 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - ordinary chondrites KW - stony meteorites KW - ion probe data KW - isotopes KW - EET 90161 KW - mass spectra KW - olivine group KW - Elephant Moraine Meteorites KW - manganese KW - L chondrites KW - stable isotopes KW - electron probe data KW - meteorites KW - fayalite KW - orthosilicates KW - spectra KW - chondrites KW - chromium KW - unequilibrated ordinary chondrites KW - isotope ratios KW - electron microscopy data KW - Mn-55/Mn-53 KW - Mn/Cr KW - nesosilicates KW - aqueous alteration KW - Cr-53/Cr-52 KW - metals KW - petrography KW - SEM data KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641010800?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Manganese-chromium+ages+of+aqueous+alteration+of+unequilibrated+ordinary+chondrites&rft.au=Doyle%2C+P+M%3BKrot%2C+A+N%3BNagashima%2C+K%3BDobrica%2C+E%3BBrearley%2C+A+J%3BAnonymous&rft.aulast=Doyle&rft.aufirst=P&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1726.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 17 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on June 9, 2014 N1 - Last updated - 2014-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - aqueous alteration; chondrites; chromium; Cr-53/Cr-52; EET 90161; electron microscopy data; electron probe data; Elephant Moraine Meteorites; fayalite; ion probe data; isotope ratios; isotopes; L chondrites; manganese; mass spectra; metals; meteorites; Mn-55/Mn-53; Mn/Cr; nesosilicates; olivine group; ordinary chondrites; orthosilicates; petrography; SEM data; silicates; spectra; stable isotopes; stony meteorites; unequilibrated ordinary chondrites ER - TY - JOUR T1 - Nanoscale analysis of space-weathering features in soils from Itokawa AN - 1641010783; 2015-001047 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Thompson, M S AU - Christoffersen, R AU - Zega, T J AU - Keller, Lindsay P AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2121 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - irradiation KW - asteroids KW - solar wind KW - iron KW - meteorites KW - pyroxene group KW - Hayabusa Mission KW - framework silicates KW - chemical composition KW - chain silicates KW - soils KW - plagioclase KW - Itokawa Asteroid KW - amorphous materials KW - radiation damage KW - impacts KW - weathering KW - TEM data KW - depth KW - micrometeorites KW - space weathering KW - iron sulfides KW - metals KW - amorphization KW - sulfides KW - nanoparticles KW - feldspar group KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641010783?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Stable+magnesium+isotope+variation+in+melilite+mantle+of+Allende+type+B1+CAI+EK+459-5-1&rft.au=Kerekgyarto%2C+A+G%3BJeffcoat%2C+C+R%3BLapen%2C+T+J%3BAndreasen%2C+R%3BRighter%2C+M%3BRoss%2C+D+K%3BAnonymous&rft.aulast=Kerekgyarto&rft.aufirst=A&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2121.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 9 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 10, 2014 N1 - Last updated - 2014-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - amorphization; amorphous materials; asteroids; chain silicates; chemical composition; depth; feldspar group; framework silicates; Hayabusa Mission; impacts; iron; iron sulfides; irradiation; Itokawa Asteroid; metals; meteorites; micrometeorites; nanoparticles; plagioclase; pyroxene group; radiation damage; silicates; soils; solar wind; space weathering; sulfides; TEM data; weathering ER - TY - JOUR T1 - A transmission electron microscope investigation of space weathering effects in Hayabusa samples AN - 1641010782; 2015-001048 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Keller, Lindsay P AU - Berger, Eve L AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1935 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - asteroids KW - solar wind KW - olivine group KW - iron KW - pyroxene group KW - Hayabusa Mission KW - olivine KW - orthosilicates KW - framework silicates KW - spectra KW - troilite KW - spherules KW - chain silicates KW - plagioclase KW - Itokawa Asteroid KW - radiation damage KW - albite KW - X-ray spectra KW - weathering KW - TEM data KW - EDS spectra KW - nesosilicates KW - space weathering KW - iron sulfides KW - metals KW - orthopyroxene KW - sulfides KW - feldspar group KW - particles KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641010782?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=A+transmission+electron+microscope+investigation+of+space+weathering+effects+in+Hayabusa+samples&rft.au=Keller%2C+Lindsay+P%3BBerger%2C+Eve+L%3BAnonymous&rft.aulast=Keller&rft.aufirst=Lindsay&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1935.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 9 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 10, 2014 N1 - Last updated - 2014-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - albite; asteroids; chain silicates; EDS spectra; feldspar group; framework silicates; Hayabusa Mission; iron; iron sulfides; Itokawa Asteroid; metals; nesosilicates; olivine; olivine group; orthopyroxene; orthosilicates; particles; plagioclase; pyroxene group; radiation damage; silicates; solar wind; space weathering; spectra; spherules; sulfides; TEM data; troilite; weathering; X-ray spectra ER - TY - JOUR T1 - Initial results from the Kwajalein micrometeorite collections AN - 1637543519; 2014-101619 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Wozniakiewicz, P J AU - Bradley, J P AU - Price, M C AU - Zolensky, M E AU - Ishii, H A AU - Brownlee, Donald E AU - Dearborn, D AU - Jones, T AU - Barnett, B AU - Yakuma, S AU - Letendre, T AU - Gonzalez, C AU - Bastien, R AU - Rodriguez, M AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1823 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - collecting KW - separation KW - X-ray spectra KW - EDS spectra KW - micrometeorites KW - meteorites KW - sample preparation KW - sampling KW - Oceania KW - oxides KW - Micronesia KW - Marshall Islands KW - air KW - spectra KW - Kwajalein Atoll KW - winds KW - SEM data KW - collections KW - spherules KW - magnetite KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1637543519?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+results+from+the+Kwajalein+micrometeorite+collections&rft.au=Wozniakiewicz%2C+P+J%3BBradley%2C+J+P%3BPrice%2C+M+C%3BZolensky%2C+M+E%3BIshii%2C+H+A%3BBrownlee%2C+Donald+E%3BDearborn%2C+D%3BJones%2C+T%3BBarnett%2C+B%3BYakuma%2C+S%3BLetendre%2C+T%3BGonzalez%2C+C%3BBastien%2C+R%3BRodriguez%2C+M%3BAnonymous&rft.aulast=Wozniakiewicz&rft.aufirst=P&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1823.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on July 17, 2014 N1 - Last updated - 2014-12-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - air; collecting; collections; EDS spectra; Kwajalein Atoll; magnetite; Marshall Islands; meteorites; micrometeorites; Micronesia; Oceania; oxides; sample preparation; sampling; SEM data; separation; spectra; spherules; winds; X-ray spectra ER - TY - JOUR T1 - Heat pipe planets AN - 1637543418; 2014-101625 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Moore, William B AU - Simon, Justin I AU - Webb, A Alexander G AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1951 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - magma oceans KW - heat flux KW - Moon KW - lithosphere KW - Venus KW - resurfacing KW - Mars KW - thermal history KW - temperature KW - terrestrial planets KW - super-Earths KW - planets KW - plate tectonics KW - volcanism KW - magmas KW - heat flow KW - planetary interiors KW - Mercury Planet KW - theoretical models KW - heat pipes KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1637543418?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Heat+pipe+planets&rft.au=Moore%2C+William+B%3BSimon%2C+Justin+I%3BWebb%2C+A+Alexander+G%3BAnonymous&rft.aulast=Moore&rft.aufirst=William&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1951.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 22 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on July 18, 2014 N1 - Last updated - 2014-12-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - heat flow; heat flux; heat pipes; lithosphere; magma oceans; magmas; Mars; Mercury Planet; Moon; planetary interiors; planets; plate tectonics; resurfacing; super-Earths; temperature; terrestrial planets; theoretical models; thermal history; Venus; volcanism ER - TY - JOUR T1 - Comparing geologic data sets collected by planetary analog traverses and by standard geologic field mapping; implications for planetary exploration planning AN - 1637543251; 2014-104481 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Eppler, Dean B AU - Bleacher, Jacob E AU - Evans, Cynthia A AU - Feng, Wanda AU - Gruener, John E AU - Hurwitz, Debra M AU - Janoiko, Barbara AU - Skinner, James A, Jr AU - Whitson, Peggy AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2078 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - United States KW - analog missions KW - geotraverses KW - Mars KW - mapping KW - Desert Research and Technology Studies KW - exploration KW - terrestrial planets KW - planets KW - planning KW - San Francisco Peaks KW - Arizona KW - Desert RATS KW - field studies KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1637543251?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Comparing+geologic+data+sets+collected+by+planetary+analog+traverses+and+by+standard+geologic+field+mapping%3B+implications+for+planetary+exploration+planning&rft.au=Eppler%2C+Dean+B%3BBleacher%2C+Jacob+E%3BEvans%2C+Cynthia+A%3BFeng%2C+Wanda%3BGruener%2C+John+E%3BHurwitz%2C+Debra+M%3BJanoiko%2C+Barbara%3BSkinner%2C+James+A%2C+Jr%3BWhitson%2C+Peggy%3BAnonymous&rft.aulast=Eppler&rft.aufirst=Dean&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2078.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 19, 2014 N1 - Last updated - 2014-12-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - analog missions; Arizona; Desert RATS; Desert Research and Technology Studies; exploration; field studies; geotraverses; mapping; Mars; planets; planning; San Francisco Peaks; terrestrial planets; United States ER - TY - JOUR T1 - A comparison of crater-size scaling and ejection-speed scaling during experimental impacts in sand AN - 1637543173; 2014-101644 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Anderson, J L B AU - Cintala, M J AU - Johnson, M K AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2668 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - sand KW - experimental studies KW - power law KW - impact features KW - projectiles KW - clastic sediments KW - grain size KW - trajectories KW - impacts KW - ejecta KW - photography KW - size KW - laboratory studies KW - scale models KW - granular materials KW - high-speed photography KW - sediments KW - velocity KW - impact craters KW - particle imaging velocimetry KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1637543173?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+of+the+sample+preparation+on+the+organic+compounds+detected+on+Mars+at+JK+and+CB&rft.au=Buch%2C+Arnaud%3BSzopa%2C+C%3BFreissinet%2C+C%3BGlavin%2C+D+P%3BColl%2C+P%3BCabane%2C+M%3BEigenbrode%2C+J%3BMiller%2C+K%3BMartin%2C+M%3BSummons%2C+R+E%3BArcher%2C+D%3BBrunner%2C+A%3BConrad%2C+P%3BTeinturier%2C+S%3BCoscia%2C+D%3BDworkin%2C+J%3BGrotzinger%2C+J%3BMahaffy%2C+P%3BMcKay%2C+C%3BMing%2C+D%3BNavarro-Gonzalez%2C+R%3BAnonymous&rft.aulast=Buch&rft.aufirst=Arnaud&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2668.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 8 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on July 21, 2014 N1 - Last updated - 2014-12-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - clastic sediments; ejecta; experimental studies; grain size; granular materials; high-speed photography; impact craters; impact features; impacts; laboratory studies; particle imaging velocimetry; photography; power law; projectiles; sand; scale models; sediments; size; trajectories; velocity ER - TY - JOUR T1 - A glimpse of lunar core shape and deep gravity field AN - 1637543126; 2014-104448 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Williams, James G AU - Konopliv, A S AU - Lemoine, Frank G AU - Goossens, Sander J AU - Asmar, S W AU - Park, R S AU - Yuan, D N AU - Boggs, Dale H AU - Mazarico, Erwan AU - Kiefer, W S AU - Wieczorek, Mark A AU - Watkins, M M AU - Smith, D E AU - Zuber, Maria T AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2267 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - lunar laser ranging KW - Moon KW - moment of inertia KW - mantle KW - torque KW - fluid phase KW - GRAIL KW - core-mantle boundary KW - outer core KW - Gravity Recovery and Interior Laboratory mission KW - gravity field KW - planetary interiors KW - core KW - oblateness KW - libration KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1637543126?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=A+glimpse+of+lunar+core+shape+and+deep+gravity+field&rft.au=Williams%2C+James+G%3BKonopliv%2C+A+S%3BLemoine%2C+Frank+G%3BGoossens%2C+Sander+J%3BAsmar%2C+S+W%3BPark%2C+R+S%3BYuan%2C+D+N%3BBoggs%2C+Dale+H%3BMazarico%2C+Erwan%3BKiefer%2C+W+S%3BWieczorek%2C+Mark+A%3BWatkins%2C+M+M%3BSmith%2C+D+E%3BZuber%2C+Maria+T%3BAnonymous&rft.aulast=Williams&rft.aufirst=James&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2267.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 12 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 15, 2014 N1 - Last updated - 2014-12-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - core; core-mantle boundary; fluid phase; GRAIL; gravity field; Gravity Recovery and Interior Laboratory mission; libration; lunar laser ranging; mantle; moment of inertia; Moon; oblateness; outer core; planetary interiors; torque ER - TY - JOUR T1 - Planetary Lake Lander; adaptive science initial results AN - 1637543016; 2014-104484 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Smith, Trey AU - Lee, S Y AU - Pedersen, L AU - Seddiqi, H AU - Cabrol, Nathalie A AU - Grin, E A AU - Lorenz, R AU - Moersch, J AU - MacLennan, E AU - Parro, V AU - Smith, E W AU - Sobron, P AU - Tambley, C AU - Thompson, C AU - Wettergreen, David S AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1616 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - water quality KW - icy satellites KW - shore features KW - imagery KW - hidden Markov model KW - statistical analysis KW - lakes KW - Chile KW - depth KW - exploration KW - South America KW - detection KW - robotic exploration KW - Titan Mare Explorer KW - natural analogs KW - Titan Satellite KW - storms KW - Planetary Lake Lander KW - satellites KW - meteorology KW - Laguna Negra KW - cameras KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1637543016?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Planetary+Lake+Lander%3B+adaptive+science+initial+results&rft.au=Smith%2C+Trey%3BLee%2C+S+Y%3BPedersen%2C+L%3BSeddiqi%2C+H%3BCabrol%2C+Nathalie+A%3BGrin%2C+E+A%3BLorenz%2C+R%3BMoersch%2C+J%3BMacLennan%2C+E%3BParro%2C+V%3BSmith%2C+E+W%3BSobron%2C+P%3BTambley%2C+C%3BThompson%2C+C%3BWettergreen%2C+David+S%3BAnonymous&rft.aulast=Smith&rft.aufirst=Trey&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1616.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 2 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 19, 2014 N1 - Last updated - 2014-12-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - cameras; Chile; depth; detection; exploration; hidden Markov model; icy satellites; imagery; Laguna Negra; lakes; meteorology; natural analogs; Planetary Lake Lander; robotic exploration; satellites; shore features; South America; statistical analysis; storms; Titan Mare Explorer; Titan Satellite; water quality ER - TY - JOUR T1 - Comparing geologic data sets collected by planetary analog traverses and by standard geologic field mapping; Desert RATS data analysis AN - 1637542977; 2014-104478 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Feng, Wanda AU - Evans, Cynthia A AU - Gruener, John E AU - Eppler, Dean B AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1023 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - United States KW - analog missions KW - geotraverses KW - mapping KW - landforms KW - Apollo Program KW - cinder cones KW - Desert Research and Technology Studies KW - planets KW - volcanic features KW - San Francisco Peaks KW - natural analogs KW - Arizona KW - Desert RATS KW - basalt flows KW - extravehicular activity KW - field studies KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1637542977?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=An+update+on+the+NASA+Planetary+Science+Division+research+and+analysis+program&rft.au=Richey%2C+Christina+R%3BBernstein%2C+M%3BRall%2C+J%3BAnonymous&rft.aulast=Richey&rft.aufirst=Christina&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1023.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - geol. sketch map N1 - SuppNotes - Accessed on May 19, 2014 N1 - Last updated - 2014-12-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - analog missions; Apollo Program; Arizona; basalt flows; cinder cones; Desert RATS; Desert Research and Technology Studies; extravehicular activity; field studies; geotraverses; landforms; mapping; natural analogs; planets; San Francisco Peaks; United States; volcanic features ER - TY - JOUR T1 - Planetary Lake Lander; year 3 science overview AN - 1637542745; 2014-104483 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Cabrol, Nathalie A AU - Smith, T M AU - Grin, E A AU - Lee, S AU - Lorenz, R AU - Moersch, J AU - MacLennan, E AU - Parro, V AU - Pedersen, L AU - Smith, E W AU - Sobron, P AU - Tambley, C AU - Thompson, C AU - Wettergreen, David S AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1167 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - icy satellites KW - lakes KW - astrobiology KW - ecosystems KW - Chile KW - temperature KW - exploration KW - sampling KW - robotic exploration KW - electromagnetic radiation KW - Titan Mare Explorer KW - Titan Satellite KW - Planetary Lake Lander KW - satellites KW - Laguna Negra KW - real-time methods KW - monitoring KW - ultraviolet radiation KW - South America KW - limnology KW - thermocline KW - natural analogs KW - testing KW - bathymetry KW - field studies KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1637542745?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Planetary+Lake+Lander%3B+year+3+science+overview&rft.au=Cabrol%2C+Nathalie+A%3BSmith%2C+T+M%3BGrin%2C+E+A%3BLee%2C+S%3BLorenz%2C+R%3BMoersch%2C+J%3BMacLennan%2C+E%3BParro%2C+V%3BPedersen%2C+L%3BSmith%2C+E+W%3BSobron%2C+P%3BTambley%2C+C%3BThompson%2C+C%3BWettergreen%2C+David+S%3BAnonymous&rft.aulast=Cabrol&rft.aufirst=Nathalie&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1167.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 5 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 19, 2014 N1 - Last updated - 2014-12-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - astrobiology; bathymetry; Chile; ecosystems; electromagnetic radiation; exploration; field studies; icy satellites; Laguna Negra; lakes; limnology; monitoring; natural analogs; Planetary Lake Lander; real-time methods; robotic exploration; sampling; satellites; South America; temperature; testing; thermocline; Titan Mare Explorer; Titan Satellite; ultraviolet radiation ER - TY - JOUR T1 - Lava-rise plateaus and inflation pits within the McCartys flow, New Mexico, USA AN - 1637542716; 2014-104526 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Scheidt, S P AU - Hamilton, Christopher W AU - Zimbelman, J R AU - Bleacher, Jacob E AU - Garry, W Brent AU - de Wet, Andrew P AU - Crumpler, L S AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1491 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - United States KW - effusion KW - mapping KW - New Mexico KW - Holocene KW - Cenozoic KW - fractures KW - thickness KW - pahoehoe KW - patterns KW - Quaternary KW - lava flows KW - three-dimensional models KW - rates KW - Zuni-Bandera volcanic field KW - polygonal fractures KW - emplacement KW - geometry KW - morphology KW - plateaus KW - lava KW - concentric fractures KW - McCartys lava flow KW - linear fractures KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1637542716?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Lava-rise+plateaus+and+inflation+pits+within+the+McCartys+flow%2C+New+Mexico%2C+USA&rft.au=Scheidt%2C+S+P%3BHamilton%2C+Christopher+W%3BZimbelman%2C+J+R%3BBleacher%2C+Jacob+E%3BGarry%2C+W+Brent%3Bde+Wet%2C+Andrew+P%3BCrumpler%2C+L+S%3BAnonymous&rft.aulast=Scheidt&rft.aufirst=S&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1491.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 12 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 22, 2014 N1 - Last updated - 2014-12-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Cenozoic; concentric fractures; effusion; emplacement; fractures; geometry; Holocene; lava; lava flows; linear fractures; mapping; McCartys lava flow; morphology; New Mexico; pahoehoe; patterns; plateaus; polygonal fractures; Quaternary; rates; thickness; three-dimensional models; United States; Zuni-Bandera volcanic field ER - TY - JOUR T1 - The gravity field of Mercury from MESSENGER AN - 1637542604; 2014-104465 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Mazarico, Erwan AU - Genova, Antonio AU - Goossens, Sander J AU - Lemoine, Frank G AU - Smith, David E AU - Zuber, Maria T AU - Neumann, Gregory A AU - Solomon, Sean C AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1863 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - terrestrial planets KW - planets KW - gravity anomalies KW - gravity field KW - Mercury Planet KW - mapping KW - orbital observations KW - MESSENGER Mission KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1637542604?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=LunarCubes%3B+application+of+the+CubeSat+paradigm+to+lunar+missions&rft.au=Clark%2C+Pamela+E%3BMacDowall%2C+R%3BReuter%2C+D%3BMauk%2C+R%3BPatel%2C+D%3BHudeck%2C+J%3BAltunc%2C+S%3BMentzel%2C+E%3BHernandez%2C+A%3BFarrell%2C+W+M%3BCox%2C+R%3BAnonymous&rft.aulast=Clark&rft.aufirst=Pamela&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1863.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 6 N1 - PubXState - TX N1 - Document feature - 1 table, geol. sketch maps N1 - SuppNotes - Accessed on May 16, 2014 N1 - Last updated - 2014-12-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - gravity anomalies; gravity field; mapping; Mercury Planet; MESSENGER Mission; orbital observations; planets; terrestrial planets ER - TY - JOUR T1 - GRAIL refinements to lunar seismic structure AN - 1637542577; 2014-104469 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Weber, R C AU - Schmerr, N C AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2008 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - P-waves KW - body waves KW - moonquakes KW - seismology KW - Moon KW - GRAIL mission KW - data processing KW - inverse problem KW - elastic waves KW - Apollo Program KW - depth KW - models KW - gravity field KW - seismicity KW - planetary interiors KW - lunar crust KW - traveltime KW - lunar mantle KW - core KW - seismic waves KW - Gravity Recovery and Interior Laboratory KW - arrays KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1637542577?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=GRAIL+refinements+to+lunar+seismic+structure&rft.au=Weber%2C+R+C%3BSchmerr%2C+N+C%3BAnonymous&rft.aulast=Weber&rft.aufirst=R&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2008.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 8 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 19, 2014 N1 - Last updated - 2014-12-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Apollo Program; arrays; body waves; core; data processing; depth; elastic waves; GRAIL mission; gravity field; Gravity Recovery and Interior Laboratory; inverse problem; lunar crust; lunar mantle; models; Moon; moonquakes; P-waves; planetary interiors; seismic waves; seismicity; seismology; traveltime ER - TY - JOUR T1 - Constraints on impact-induced fracturing and brecciation of the lunar crust from GRAIL AN - 1637542554; 2014-104442 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Soderblom, Jason M AU - Evans, Alexander J AU - Phillips, Roger J AU - Andrews-Hanna, Jeffrey C AU - Melosh, H Jay AU - Milbury, Colleen AU - Miljkovic, Katarina 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 AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2213 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Lunar Orbiter Laser Altimeter KW - cratering KW - impact features KW - Bayesian analysis KW - fracturing KW - lunar craters KW - mass KW - Gravity Recovery and Interior Laboratory mission KW - gravity anomalies KW - gravity field KW - topography KW - diameter KW - Moon KW - statistical analysis KW - porous materials KW - GRAIL KW - impacts KW - porosity KW - depth KW - size KW - models KW - complex craters KW - brecciation KW - lunar crust KW - Bouguer anomalies KW - terrestrial comparison KW - impact craters KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1637542554?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Constraints+on+impact-induced+fracturing+and+brecciation+of+the+lunar+crust+from+GRAIL&rft.au=Soderblom%2C+Jason+M%3BEvans%2C+Alexander+J%3BPhillips%2C+Roger+J%3BAndrews-Hanna%2C+Jeffrey+C%3BMelosh%2C+H+Jay%3BMilbury%2C+Colleen%3BMiljkovic%2C+Katarina%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%3BAnonymous&rft.aulast=Soderblom&rft.aufirst=Jason&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2213.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 16 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 15, 2014 N1 - Last updated - 2014-12-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Bayesian analysis; Bouguer anomalies; brecciation; complex craters; cratering; depth; diameter; fracturing; GRAIL; gravity anomalies; gravity field; Gravity Recovery and Interior Laboratory mission; impact craters; impact features; impacts; lunar craters; lunar crust; Lunar Orbiter Laser Altimeter; mass; models; Moon; porosity; porous materials; size; statistical analysis; terrestrial comparison; topography ER - TY - JOUR T1 - Comparing and reconciling and traditional field and photogeologic mapping techniques; lessons from the San Francisco volcanic field, Arizona AN - 1637542539; 2014-104480 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Skinner, J A, Jr AU - Eppler, Dean B AU - Bleacher, Jacob E AU - Evans, Cynthia A AU - Feng, W AU - Gruener, John E AU - Hurwitz, Debra M AU - Janoiko, Barbara AU - Whitson, Peggy AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2913 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - United States KW - volcanic rocks KW - lava flows KW - Colorado Plateau KW - igneous rocks KW - mapping KW - exploration KW - pyroclastics KW - planets KW - volcanic features KW - San Francisco Peaks KW - photogeology KW - basalts KW - Arizona KW - outcrops KW - vents KW - remote sensing KW - field studies KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1637542539?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Comparing+and+reconciling+and+traditional+field+and+photogeologic+mapping+techniques%3B+lessons+from+the+San+Francisco+volcanic+field%2C+Arizona&rft.au=Skinner%2C+J+A%2C+Jr%3BEppler%2C+Dean+B%3BBleacher%2C+Jacob+E%3BEvans%2C+Cynthia+A%3BFeng%2C+W%3BGruener%2C+John+E%3BHurwitz%2C+Debra+M%3BJanoiko%2C+Barbara%3BWhitson%2C+Peggy%3BAnonymous&rft.aulast=Skinner&rft.aufirst=J&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2913.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 9 N1 - PubXState - TX N1 - Document feature - 1 table, geol. sketch map N1 - SuppNotes - Accessed on May 19, 2014 N1 - Last updated - 2014-12-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Arizona; basalts; Colorado Plateau; exploration; field studies; igneous rocks; lava flows; mapping; outcrops; photogeology; planets; pyroclastics; remote sensing; San Francisco Peaks; United States; vents; volcanic features; volcanic rocks ER - TY - JOUR T1 - A large lunar surface testbed from low cost material AN - 1637542531; 2014-104488 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Rickman, Douglas AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2148 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - United States KW - crushed stone KW - volcanic rocks KW - igneous rocks KW - government agencies KW - transportation KW - simulation KW - volcanic features KW - Lunar Surface Testbed KW - sediments KW - volcanic ash KW - basaltic composition KW - construction KW - construction materials KW - mines KW - toxic materials KW - boulders KW - Moon KW - clastic sediments KW - quarries KW - cinder cones KW - cost KW - concrete KW - Merriam Crater KW - Marshall Space Flight Center KW - pyroclastics KW - craters KW - NASA KW - natural analogs KW - Arizona KW - natural hazards KW - testing KW - public health KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1637542531?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=A+large+lunar+surface+testbed+from+low+cost+material&rft.au=Rickman%2C+Douglas%3BAnonymous&rft.aulast=Rickman&rft.aufirst=Douglas&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2148.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 10 N1 - PubXState - TX N1 - SuppNotes - Accessed on May 20, 2014 N1 - Last updated - 2014-12-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Arizona; basaltic composition; boulders; cinder cones; clastic sediments; concrete; construction; construction materials; cost; craters; crushed stone; government agencies; igneous rocks; Lunar Surface Testbed; Marshall Space Flight Center; Merriam Crater; mines; Moon; NASA; natural analogs; natural hazards; public health; pyroclastics; quarries; sediments; simulation; testing; toxic materials; transportation; United States; volcanic ash; volcanic features; volcanic rocks ER - TY - JOUR T1 - Optical constants of Mars candidate materials used to model laboratory reflectance spectra of mixtures AN - 1637542529; 2014-104517 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Roush, T L AU - Brown, A AU - Bishop, J L AU - Blake, D AU - Bristow, T AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1380 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - near-infrared spectra KW - volcanic rocks KW - glasses KW - igneous rocks KW - optical spectra KW - Mars KW - laboratory studies KW - pyroxene group KW - mixing KW - optical constants KW - spectra KW - enstatite KW - chain silicates KW - CRISM KW - saponite KW - grain size KW - Mars Reconnaissance Orbiter KW - palagonite KW - clay minerals KW - terrestrial planets KW - planets KW - sheet silicates KW - orthopyroxene KW - reflectance KW - refractive index KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1637542529?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+constants+of+Mars+candidate+materials+used+to+model+laboratory+reflectance+spectra+of+mixtures&rft.au=Roush%2C+T+L%3BBrown%2C+A%3BBishop%2C+J+L%3BBlake%2C+D%3BBristow%2C+T%3BAnonymous&rft.aulast=Roush&rft.aufirst=T&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1380.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 11 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 22, 2014 N1 - Last updated - 2014-12-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - chain silicates; clay minerals; CRISM; enstatite; glasses; grain size; igneous rocks; laboratory studies; Mars; Mars Reconnaissance Orbiter; mixing; near-infrared spectra; optical constants; optical spectra; orthopyroxene; palagonite; planets; pyroxene group; reflectance; refractive index; saponite; sheet silicates; silicates; spectra; terrestrial planets; volcanic rocks ER - TY - JOUR T1 - Mapping planetary volcanic deposits; identifying vents and distinguishing between effects of eruption conditions and local lava storage and release on flow field morphology AN - 1637542477; 2014-104479 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Bleacher, Jacob E AU - Eppler, Dean B AU - Skinner, J A AU - Evans, Cynthia A AU - Feng, W AU - Gruener, John E AU - Hurwitz, Debra M AU - Whitson, Peggy AU - Janoiko, Barbara AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2504 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - United States KW - volcanic rocks KW - lava flows KW - igneous rocks KW - mapping KW - emplacement KW - volcanic fields KW - morphology KW - planets KW - volcanic features KW - Desert Research and Technology Studies program KW - San Francisco Peaks KW - eruptions KW - natural analogs KW - Arizona KW - volcanoes KW - vents KW - field studies KW - cones KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1637542477?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+planetary+volcanic+deposits%3B+identifying+vents+and+distinguishing+between+effects+of+eruption+conditions+and+local+lava+storage+and+release+on+flow+field+morphology&rft.au=Bleacher%2C+Jacob+E%3BEppler%2C+Dean+B%3BSkinner%2C+J+A%3BEvans%2C+Cynthia+A%3BFeng%2C+W%3BGruener%2C+John+E%3BHurwitz%2C+Debra+M%3BWhitson%2C+Peggy%3BJanoiko%2C+Barbara%3BAnonymous&rft.aulast=Bleacher&rft.aufirst=Jacob&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2504.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 11 N1 - PubXState - TX N1 - Document feature - geol. sketch map N1 - SuppNotes - Accessed on May 19, 2014 N1 - Last updated - 2014-12-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Arizona; cones; Desert Research and Technology Studies program; emplacement; eruptions; field studies; igneous rocks; lava flows; mapping; morphology; natural analogs; planets; San Francisco Peaks; United States; vents; volcanic features; volcanic fields; volcanic rocks; volcanoes ER - TY - JOUR T1 - Mineralogical characterization by XRD of gypsum dunes at White Sands National Monument and application to gypsum detection on Mars AN - 1637542459; 2014-104531 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Lafuente, B AU - Bishop, J L AU - Fenton, L K AU - King, S J AU - Blake, D AU - Sarrazin, P AU - Downs, R T AU - Horgan, B H AU - Garcia, G C AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2578 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - United States KW - silicates KW - anhydrite KW - X-ray diffraction data KW - silica minerals KW - Mars KW - New Mexico KW - bassanite KW - dolomite KW - mineral composition KW - Curiosity Rover KW - CheMin instrument KW - framework silicates KW - sulfates KW - calcite KW - terrestrial planets KW - planets KW - Olympia Undae KW - detection KW - White Sands KW - natural analogs KW - Mars Science Laboratory KW - quartz KW - dune fields KW - carbonates KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1637542459?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Mineralogical+characterization+by+XRD+of+gypsum+dunes+at+White+Sands+National+Monument+and+application+to+gypsum+detection+on+Mars&rft.au=Lafuente%2C+B%3BBishop%2C+J+L%3BFenton%2C+L+K%3BKing%2C+S+J%3BBlake%2C+D%3BSarrazin%2C+P%3BDowns%2C+R+T%3BHorgan%2C+B+H%3BGarcia%2C+G+C%3BAnonymous&rft.aulast=Lafuente&rft.aufirst=B&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2578.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 4 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 22, 2014 N1 - Last updated - 2014-12-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - anhydrite; bassanite; calcite; carbonates; CheMin instrument; Curiosity Rover; detection; dolomite; dune fields; framework silicates; Mars; Mars Science Laboratory; mineral composition; natural analogs; New Mexico; Olympia Undae; planets; quartz; silica minerals; silicates; sulfates; terrestrial planets; United States; White Sands; X-ray diffraction data ER - TY - JOUR T1 - Automated core sample analysis by the Mars Microbeam Raman Spectrometer (MMRS) on-board the Zoe Rover in Atacama; a terrestrial test for Mars exploration AN - 1637542400; 2014-104490 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Wei, Jie AU - Wang, Alian AU - Lambert, James L AU - Wettergreen, David S AU - Cabrol, Nathalie A AU - Warren-Rhodes, Kimberley AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2428 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - terrestrial environment KW - silica minerals KW - anatase KW - astrobiology KW - Mars KW - calibration KW - Chile KW - Mars Microbeam Raman Spectrometer KW - exploration KW - automated analysis KW - mineral composition KW - Atacama Desert KW - sampling KW - carbon KW - oxides KW - framework silicates KW - spectra KW - sulfates KW - arid environment KW - Life in the Atacama project KW - depth KW - terrestrial planets KW - planets KW - habitat KW - Zoe Rover KW - South America KW - Raman spectra KW - identification KW - natural analogs KW - quartz KW - testing KW - feldspar group KW - carbonates KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1637542400?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Automated+core+sample+analysis+by+the+Mars+Microbeam+Raman+Spectrometer+%28MMRS%29+on-board+the+Zoe+Rover+in+Atacama%3B+a+terrestrial+test+for+Mars+exploration&rft.au=Wei%2C+Jie%3BWang%2C+Alian%3BLambert%2C+James+L%3BWettergreen%2C+David+S%3BCabrol%2C+Nathalie+A%3BWarren-Rhodes%2C+Kimberley%3BAnonymous&rft.aulast=Wei&rft.aufirst=Jie&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2428.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 13 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 20, 2014 N1 - Last updated - 2014-12-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - anatase; arid environment; astrobiology; Atacama Desert; automated analysis; calibration; carbon; carbonates; Chile; depth; exploration; feldspar group; framework silicates; habitat; identification; instruments; Life in the Atacama project; Mars; Mars Microbeam Raman Spectrometer; mineral composition; natural analogs; oxides; planets; quartz; Raman spectra; sampling; silica minerals; silicates; South America; spectra; sulfates; terrestrial environment; terrestrial planets; testing; Zoe Rover ER - TY - JOUR T1 - Global gravity field models of the Moon using GRAIL primary and extended mission data AN - 1637542325; 2014-104440 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 - 2014 PY - 2014 DA - 2014 EP - Abstract 1619 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - models KW - gravity field KW - topography KW - Moon KW - orbits KW - global KW - statistical analysis KW - data processing KW - GRAIL KW - Gravity Recovery and Interior Laboratory KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1637542325?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+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=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1619.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 11 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 13, 2014 N1 - Last updated - 2014-12-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - data processing; global; GRAIL; gravity field; Gravity Recovery and Interior Laboratory; models; Moon; orbits; statistical analysis; topography ER - TY - JOUR T1 - Experimental alteration of basalt to support interpretation of remote sensing and in situ measurements from Mars AN - 1637542295; 2014-104511 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Bell, M S AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2822 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - United States KW - alteration KW - Hawaii Island KW - volcanic rocks KW - X-ray diffraction data KW - igneous rocks KW - Mauna Kea KW - Mars KW - temperature KW - Mars Exploration Rover KW - laboratory studies KW - ground truth KW - Curiosity Rover KW - basalts KW - pH KW - experimental studies KW - in situ KW - CRISM KW - Opportunity Rover KW - Hawaii County Hawaii KW - Hawaii KW - East Pacific Ocean Islands KW - terrestrial planets KW - planets KW - natural analogs KW - Oceania KW - Mars Science Laboratory KW - Polynesia KW - SEM data KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1637542295?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+alteration+of+basalt+to+support+interpretation+of+remote+sensing+and+in+situ+measurements+from+Mars&rft.au=Bell%2C+M+S%3BAnonymous&rft.aulast=Bell&rft.aufirst=M&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2822.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 14 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on May 20, 2014 N1 - Last updated - 2014-12-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alteration; basalts; CRISM; Curiosity Rover; East Pacific Ocean Islands; experimental studies; ground truth; Hawaii; Hawaii County Hawaii; Hawaii Island; igneous rocks; in situ; laboratory studies; Mars; Mars Exploration Rover; Mars Science Laboratory; Mauna Kea; natural analogs; Oceania; Opportunity Rover; pH; planets; Polynesia; remote sensing; SEM data; temperature; terrestrial planets; United States; volcanic rocks; X-ray diffraction data ER - TY - JOUR T1 - Subsurface life in the Atacama; overview of the first autonomous traverse of a 1-M rover-mounted drill AN - 1637542220; 2014-104482 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Cabrol, Nathalie A AU - Wettergreen, David S AU - Rhodes, K Warren AU - Grin, E A AU - Hare, T AU - Wei, J AU - Lambert, J AU - Moersch, J AU - Pointing, S AU - Tanaka, K AU - Tate, C AU - Thompson, D R AU - Wagner, M AU - Wang, A AU - Zacny, K AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1185 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - terrestrial environment KW - visible/near infrared spectrometer KW - analog missions KW - geotraverses KW - astrobiology KW - Mars KW - ecosystems KW - Chile KW - Atacama Desert KW - drilling KW - soils KW - arid environment KW - rovers KW - Life in the Atacama project KW - adaptation KW - terrestrial planets KW - planets KW - South America KW - detection KW - navigation KW - natural analogs KW - LiTA project KW - instruments KW - microorganisms KW - field studies KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1637542220?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Subsurface+life+in+the+Atacama%3B+overview+of+the+first+autonomous+traverse+of+a+1-M+rover-mounted+drill&rft.au=Cabrol%2C+Nathalie+A%3BWettergreen%2C+David+S%3BRhodes%2C+K+Warren%3BGrin%2C+E+A%3BHare%2C+T%3BWei%2C+J%3BLambert%2C+J%3BMoersch%2C+J%3BPointing%2C+S%3BTanaka%2C+K%3BTate%2C+C%3BThompson%2C+D+R%3BWagner%2C+M%3BWang%2C+A%3BZacny%2C+K%3BAnonymous&rft.aulast=Cabrol&rft.aufirst=Nathalie&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1185.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 10 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 19, 2014 N1 - Last updated - 2014-12-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - adaptation; analog missions; arid environment; astrobiology; Atacama Desert; Chile; detection; drilling; ecosystems; field studies; geotraverses; instruments; Life in the Atacama project; LiTA project; Mars; microorganisms; natural analogs; navigation; planets; rovers; soils; South America; terrestrial environment; terrestrial planets; visible/near infrared spectrometer ER - TY - JOUR T1 - Sodium in the LCROSS plume from two views AN - 1637542129; 2014-104435 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Hurley, D M AU - Killen, R M AU - Colaprete, A AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2174 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - plumes KW - time series analysis KW - telescope methods KW - Moon KW - Lunar Reconnaissance Orbiter KW - Cabeus Crater KW - Monte Carlo analysis KW - statistical analysis KW - alkali metals KW - Lunar CRater Observation and Sensing Satellite KW - LCROSS KW - sodium KW - impacts KW - exosphere KW - models KW - metals KW - permanently shadowed regions KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1637542129?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Sodium+in+the+LCROSS+plume+from+two+views&rft.au=Hurley%2C+D+M%3BKillen%2C+R+M%3BColaprete%2C+A%3BAnonymous&rft.aulast=Hurley&rft.aufirst=D&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2174.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 8 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 13, 2014 N1 - Last updated - 2014-12-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alkali metals; Cabeus Crater; exosphere; impacts; LCROSS; Lunar CRater Observation and Sensing Satellite; Lunar Reconnaissance Orbiter; metals; models; Monte Carlo analysis; Moon; permanently shadowed regions; plumes; sodium; statistical analysis; telescope methods; time series analysis ER - TY - JOUR T1 - Heat flux into the soil surface on Crater Gale (Mars) from ground (GTS) and air (ATS) temperatures measures; first 100 mission MSL-REMS sols AN - 1629946561; 2014-096776 JF - Abstracts - European Conference on Permafrost AU - Ramos, Miguel AU - Molina, Antonio AU - Sebastian, E AU - Armiens, C AU - Lepinette, A AU - Carrasco, I AU - Genzer, M AU - Gomez, F AU - Gomez-Elvira, J AU - Haberle, R AU - Hamilton, V E AU - Harri, A M AU - Kahanpaa, H AU - Kemppinen, O AU - Soler, J Martin AU - Martin-Torres, F J AU - Martinez-Frias, J AU - Mishna, M AU - Mora, L AU - Navarro, S AU - Newman, C AU - de Pablo, Miguel A AU - Pla, J AU - Peinado, V AU - Polkko, J AU - Rafkin, S C R AU - Renno, N O AU - Richardson, M AU - Rodriguez-Manfredi, J A AU - Romeral Planello, J J AU - de la Torre Juarez, M AU - Torres, J AU - Urqui, R AU - Valentin-Serrano, P AU - Vasavada, A R AU - Zorzano, M P Y1 - 2014 PY - 2014 DA - 2014 SP - 247 EP - 248 PB - [varies], [varies] VL - 4 KW - soils KW - technology KW - Mars KW - thermal regime KW - temperature KW - terrestrial planets KW - Mars Exploration Rover KW - planets KW - Crater Gale KW - heat flow KW - Curiosity Rover KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1629946561?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+-+European+Conference+on+Permafrost&rft.atitle=Heat+flux+into+the+soil+surface+on+Crater+Gale+%28Mars%29+from+ground+%28GTS%29+and+air+%28ATS%29+temperatures+measures%3B+first+100+mission+MSL-REMS+sols&rft.au=Ramos%2C+Miguel%3BMolina%2C+Antonio%3BSebastian%2C+E%3BArmiens%2C+C%3BLepinette%2C+A%3BCarrasco%2C+I%3BGenzer%2C+M%3BGomez%2C+F%3BGomez-Elvira%2C+J%3BHaberle%2C+R%3BHamilton%2C+V+E%3BHarri%2C+A+M%3BKahanpaa%2C+H%3BKemppinen%2C+O%3BSoler%2C+J+Martin%3BMartin-Torres%2C+F+J%3BMartinez-Frias%2C+J%3BMishna%2C+M%3BMora%2C+L%3BNavarro%2C+S%3BNewman%2C+C%3Bde+Pablo%2C+Miguel+A%3BPla%2C+J%3BPeinado%2C+V%3BPolkko%2C+J%3BRafkin%2C+S+C+R%3BRenno%2C+N+O%3BRichardson%2C+M%3BRodriguez-Manfredi%2C+J+A%3BRomeral+Planello%2C+J+J%3Bde+la+Torre+Juarez%2C+M%3BTorres%2C+J%3BUrqui%2C+R%3BValentin-Serrano%2C+P%3BVasavada%2C+A+R%3BZorzano%2C+M+P&rft.aulast=Ramos&rft.aufirst=Miguel&rft.date=2014-01-01&rft.volume=4&rft.issue=&rft.spage=247&rft.isbn=&rft.btitle=&rft.title=Abstracts+-+European+Conference+on+Permafrost&rft.issn=&rft_id=info:doi/ L2 - https://dl.dropboxusercontent.com/u/4653594/EUCOP4/2%20EUCOP4%20Book%20of%20Abstracts.pdf LA - English DB - GeoRef N1 - Conference title - Fourth European conference on Permafrost N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Last updated - 2014-12-04 N1 - CODEN - #07345 N1 - SubjectsTermNotLitGenreText - Crater Gale; Curiosity Rover; heat flow; instruments; Mars; Mars Exploration Rover; planets; soils; technology; temperature; terrestrial planets; thermal regime ER - TY - JOUR T1 - SAM measurements of krypton and xenon on Mars AN - 1629940379; 2014-096519 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Conrad, P G AU - Malespin, C AU - Franz, H B AU - Trainer, M G AU - Brunner, A E AU - Manning, H AU - Schwenzer, S P AU - Atreya, S AU - Jones, J AU - Mahaffy, P M AU - Owen, T AU - Pepin, R O AU - Wong, M H AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2366 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - stony meteorites KW - Xe-131 KW - isotopes KW - Martian meteorites KW - mass spectra KW - Mars KW - Elephant Moraine Meteorites KW - stable isotopes KW - SNC Meteorites KW - Kr-84 KW - meteorites KW - EETA 79001 KW - Kr-82 KW - Kr-83 KW - noble gases KW - Kr-86 KW - Curiosity Rover KW - Xe-132 KW - spectra KW - atmosphere KW - Viking Program KW - xenon KW - krypton KW - achondrites KW - terrestrial planets KW - Kr-80 KW - planets KW - Sample Analysis at Mars KW - Antarctica KW - shergottite KW - Mars Science Laboratory KW - Xe-129 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1629940379?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=SAM+measurements+of+krypton+and+xenon+on+Mars&rft.au=Conrad%2C+P+G%3BMalespin%2C+C%3BFranz%2C+H+B%3BTrainer%2C+M+G%3BBrunner%2C+A+E%3BManning%2C+H%3BSchwenzer%2C+S+P%3BAtreya%2C+S%3BJones%2C+J%3BMahaffy%2C+P+M%3BOwen%2C+T%3BPepin%2C+R+O%3BWong%2C+M+H%3BAnonymous&rft.aulast=Conrad&rft.aufirst=P&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2366.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 11 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 18, 2014 N1 - Last updated - 2014-12-04 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; Antarctica; atmosphere; Curiosity Rover; EETA 79001; Elephant Moraine Meteorites; isotopes; Kr-80; Kr-82; Kr-83; Kr-84; Kr-86; krypton; Mars; Mars Science Laboratory; Martian meteorites; mass spectra; meteorites; noble gases; planets; Sample Analysis at Mars; shergottite; SNC Meteorites; spectra; stable isotopes; stony meteorites; terrestrial planets; Viking Program; Xe-129; Xe-131; Xe-132; xenon ER - TY - JOUR T1 - Observations of Comet C/2012 S1 (ISON); the rise and fall of a great comet AN - 1629940270; 2014-096461 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Milam, Stefanie N AU - Coulson, Iain M AU - Keane, J AU - Remijan, Anthony J AU - Gicquel, A AU - Villanueva, Geronimo L AU - Cordiner, Martin A AU - Riesen, T AU - Charnley, Steven B AU - DiSanti, M A AU - Kuan, Yi-Jehng AU - Meech, K AU - Yang, B AU - Mumma, M J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1175 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Oort Cloud KW - imagery KW - monitoring KW - fragmentation KW - telescope methods KW - orbits KW - ISON Comet KW - long-period comets KW - gases KW - volatiles KW - comets KW - hydrogen cyanide KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1629940270?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Observations+of+Comet+C%2F2012+S1+%28ISON%29%3B+the+rise+and+fall+of+a+great+comet&rft.au=Milam%2C+Stefanie+N%3BCoulson%2C+Iain+M%3BKeane%2C+J%3BRemijan%2C+Anthony+J%3BGicquel%2C+A%3BVillanueva%2C+Geronimo+L%3BCordiner%2C+Martin+A%3BRiesen%2C+T%3BCharnley%2C+Steven+B%3BDiSanti%2C+M+A%3BKuan%2C+Yi-Jehng%3BMeech%2C+K%3BYang%2C+B%3BMumma%2C+M+J%3BAnonymous&rft.aulast=Milam&rft.aufirst=Stefanie&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1175.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 8 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 12, 2014 N1 - Last updated - 2014-12-04 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - comets; fragmentation; gases; hydrogen cyanide; imagery; ISON Comet; long-period comets; monitoring; Oort Cloud; orbits; telescope methods; volatiles ER - TY - JOUR T1 - The effects of thermal metamorphism on the amino acid content of the CI-like chondrite Yamato 86029 AN - 1629940229; 2014-096510 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Burton, A S AU - Grunsfeld, S AU - Elsila, J E AU - Glavin, D P AU - Dworkin, J P AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1394 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - water KW - CI chondrites KW - Yamato Meteorites KW - stony meteorites KW - Orgueil Meteorite KW - Ivuna Meteorite KW - thermal metamorphism KW - liquid chromatography fluorescence detection KW - carbonaceous chondrites KW - metamorphism KW - aqueous alteration KW - meteorites KW - organic compounds KW - organic acids KW - time-of-flight mass spectroscopy KW - ion chromatograms KW - chromatograms KW - amino acids KW - chondrites KW - Y 86029 KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1629940229?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+effects+of+thermal+metamorphism+on+the+amino+acid+content+of+the+CI-like+chondrite+Yamato+86029&rft.au=Burton%2C+A+S%3BGrunsfeld%2C+S%3BElsila%2C+J+E%3BGlavin%2C+D+P%3BDworkin%2C+J+P%3BAnonymous&rft.aulast=Burton&rft.aufirst=A&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1394.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 9 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 15, 2014 N1 - Last updated - 2014-12-04 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - amino acids; aqueous alteration; carbonaceous chondrites; chondrites; chromatograms; CI chondrites; ion chromatograms; Ivuna Meteorite; liquid chromatography fluorescence detection; metamorphism; meteorites; organic acids; organic compounds; Orgueil Meteorite; stony meteorites; thermal metamorphism; time-of-flight mass spectroscopy; water; Y 86029; Yamato Meteorites ER - TY - JOUR T1 - The chemical composition of Comet C/2012 S1 (ISON) as measured with CSHELL at the NASA-Infrared Telescope Facility AN - 1629940061; 2014-096459 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - DiSanti, Michael A AU - Bonev, B P AU - Gibb, E L AU - Villanueva, Geronimo L AU - Paganini, Lucas AU - Mumma, M J AU - McKay, A J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2526 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - ammonium KW - acetylene KW - ISON Comet KW - government agencies KW - aliphatic hydrocarbons KW - ethane KW - CSHELL instrument KW - alkynes KW - alcohols KW - hydrogen cyanide KW - chemical composition KW - water KW - methane KW - Cryogenic Echelle Spectrograph KW - Infrared Telescope Facility KW - formaldehyde KW - alkanes KW - methanol KW - hydroxyl ion KW - carbon monoxide KW - organic compounds KW - comets KW - NASA KW - hydrocarbons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1629940061?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+chemical+composition+of+Comet+C%2F2012+S1+%28ISON%29+as+measured+with+CSHELL+at+the+NASA-Infrared+Telescope+Facility&rft.au=DiSanti%2C+Michael+A%3BBonev%2C+B+P%3BGibb%2C+E+L%3BVillanueva%2C+Geronimo+L%3BPaganini%2C+Lucas%3BMumma%2C+M+J%3BMcKay%2C+A+J%3BAnonymous&rft.aulast=DiSanti&rft.aufirst=Michael&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2526.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 12, 2014 N1 - Last updated - 2014-12-04 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - acetylene; alcohols; aliphatic hydrocarbons; alkanes; alkynes; ammonium; carbon monoxide; chemical composition; comets; Cryogenic Echelle Spectrograph; CSHELL instrument; ethane; formaldehyde; government agencies; hydrocarbons; hydrogen cyanide; hydroxyl ion; Infrared Telescope Facility; ISON Comet; methane; methanol; NASA; organic compounds; water ER - TY - JOUR T1 - Extraterrestrial virtual field experience AN - 1629940013; 2014-096527 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Million, C AU - Sullivan, R AU - St Clair, M AU - Hayes, A AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1568 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - imagery KW - public awareness KW - Opportunity Rover KW - government agencies KW - Mars KW - education KW - simulation KW - terrestrial planets KW - Mars Exploration Rover KW - computer programs KW - planets KW - NASA Regional Planetary Imaging Facilities KW - virtual reality KW - NASA KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1629940013?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Extraterrestrial+virtual+field+experience&rft.au=Million%2C+C%3BSullivan%2C+R%3BSt+Clair%2C+M%3BHayes%2C+A%3BAnonymous&rft.aulast=Million&rft.aufirst=C&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1568.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 18, 2014 N1 - Last updated - 2014-12-04 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - computer programs; education; government agencies; imagery; instruments; Mars; Mars Exploration Rover; NASA; NASA Regional Planetary Imaging Facilities; Opportunity Rover; planets; public awareness; simulation; terrestrial planets; virtual reality ER - TY - JOUR T1 - Petrology and geochemistry of unbrecciated harzburgitic diogenite MIL 07001; a window into Vestan geological evolution AN - 1629939844; 2014-096499 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Mittlefehldt, D W AU - Peng, Z X AU - Mertzman, S A AU - Mertzman, K R AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1613 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - stony meteorites KW - asteroids KW - mass spectra KW - olivine group KW - meteorites KW - major elements KW - MIL 07001 KW - olivine KW - orthosilicates KW - X-ray fluorescence spectra KW - spectra KW - rare earths KW - trace elements KW - chemical composition KW - Miller Range Meteorites KW - Vesta Asteroid KW - parent bodies KW - differentiation KW - diogenite KW - achondrites KW - nesosilicates KW - ICP mass spectra KW - metals KW - petrography KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1629939844?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+unbrecciated+harzburgitic+diogenite+MIL+07001%3B+a+window+into+Vestan+geological+evolution&rft.au=Mittlefehldt%2C+D+W%3BPeng%2C+Z+X%3BMertzman%2C+S+A%3BMertzman%2C+K+R%3BAnonymous&rft.aulast=Mittlefehldt&rft.aufirst=D&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1613.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 11 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 14, 2014 N1 - Last updated - 2014-12-04 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; asteroids; chemical composition; differentiation; diogenite; ICP mass spectra; major elements; mass spectra; metals; meteorites; MIL 07001; Miller Range Meteorites; nesosilicates; olivine; olivine group; orthosilicates; parent bodies; petrography; rare earths; silicates; spectra; stony meteorites; trace elements; Vesta Asteroid; X-ray fluorescence spectra ER - TY - JOUR T1 - First cometary observations with ALMA; C/2012 F6 (Lemmon) and C/2012 S1 (ISON) AN - 1629939803; 2014-096460 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Cordiner, Martin A AU - Milam, Stefanie AU - Mumma, Michael AU - Charnley, Steven B AU - Remijan, Anthony J AU - Villanueva, Geronimo L AU - Paganini, Lucas AU - Boissier, Jeremie AU - Bockelee-Morvan, Dominique AU - Biver, Nicolas AU - Lis, Dariusz AU - Kuan, Yi-Jehng AU - Crovisier, Jacques AU - Coulson, Iain M AU - Minniti, Dante AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2609 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - imagery KW - telescope methods KW - ISON Comet KW - formaldehyde KW - Atacama Large Millimeter Array KW - comae KW - methanol KW - organic compounds KW - comets KW - ice KW - alcohols KW - Lemmon Comet KW - hydrogen cyanide KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1629939803?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+cometary+observations+with+ALMA%3B+C%2F2012+F6+%28Lemmon%29+and+C%2F2012+S1+%28ISON%29&rft.au=Cordiner%2C+Martin+A%3BMilam%2C+Stefanie%3BMumma%2C+Michael%3BCharnley%2C+Steven+B%3BRemijan%2C+Anthony+J%3BVillanueva%2C+Geronimo+L%3BPaganini%2C+Lucas%3BBoissier%2C+Jeremie%3BBockelee-Morvan%2C+Dominique%3BBiver%2C+Nicolas%3BLis%2C+Dariusz%3BKuan%2C+Yi-Jehng%3BCrovisier%2C+Jacques%3BCoulson%2C+Iain+M%3BMinniti%2C+Dante%3BAnonymous&rft.aulast=Cordiner&rft.aufirst=Martin&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2609.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 12, 2014 N1 - Last updated - 2014-12-04 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alcohols; Atacama Large Millimeter Array; comae; comets; formaldehyde; hydrogen cyanide; ice; imagery; ISON Comet; Lemmon Comet; methanol; organic compounds; telescope methods ER - TY - JOUR T1 - Rapid degradation of the organic molecules in Martian surface rocks due to exposure to cosmic rays; severe implications to the search of the "extinct" life on Mars AN - 1629939793; 2014-096520 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Pavlov, A A AU - Eigenbrode, J L AU - Glavin, D P AU - Floyd, M AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2830 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - galactic cosmic rays KW - experimental studies KW - irradiation KW - degradation KW - alanine KW - radiation damage KW - glycine KW - astrobiology KW - rates KW - Mars KW - depth KW - terrestrial planets KW - planets KW - organic compounds KW - organic acids KW - gamma rays KW - silica KW - amino acids KW - hydrocarbons KW - carboxylic acids KW - polycyclic aromatic hydrocarbons KW - cosmic rays KW - aromatic hydrocarbons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1629939793?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Rapid+degradation+of+the+organic+molecules+in+Martian+surface+rocks+due+to+exposure+to+cosmic+rays%3B+severe+implications+to+the+search+of+the+%22extinct%22+life+on+Mars&rft.au=Pavlov%2C+A+A%3BEigenbrode%2C+J+L%3BGlavin%2C+D+P%3BFloyd%2C+M%3BAnonymous&rft.aulast=Pavlov&rft.aufirst=A&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2830.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 4 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Aug. 18, 2014 N1 - Last updated - 2014-12-04 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alanine; amino acids; aromatic hydrocarbons; astrobiology; carboxylic acids; cosmic rays; degradation; depth; experimental studies; galactic cosmic rays; gamma rays; glycine; hydrocarbons; irradiation; Mars; organic acids; organic compounds; planets; polycyclic aromatic hydrocarbons; radiation damage; rates; silica; terrestrial planets ER - TY - JOUR T1 - Global distribution of lunar impact melt flows AN - 1623274669; 2014-090996 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Neish, C D AU - Madden, J AU - Carter, L M AU - Hawke, B R AU - Giguere, T AU - Bray, V J AU - Osinski, G R AU - Cahill, J T S AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1159 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Lunar Orbiter Laser Altimeter KW - impact features KW - Moon KW - Lunar Reconnaissance Orbiter KW - Lunar Reconnaissance Orbiter Camera KW - global KW - distribution KW - melts KW - lunar craters KW - size KW - flows KW - impact melts KW - topography KW - complex craters KW - Mini-RF instrument KW - impact craters KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1623274669?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+distribution+of+lunar+impact+melt+flows&rft.au=Neish%2C+C+D%3BMadden%2C+J%3BCarter%2C+L+M%3BHawke%2C+B+R%3BGiguere%2C+T%3BBray%2C+V+J%3BOsinski%2C+G+R%3BCahill%2C+J+T+S%3BAnonymous&rft.aulast=Neish&rft.aufirst=C&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1159.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 8 N1 - PubXState - TX N1 - Document feature - illus. incl. sketch map N1 - SuppNotes - Accessed on June 20, 2014 N1 - Last updated - 2014-11-13 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - complex craters; distribution; flows; global; impact craters; impact features; impact melts; lunar craters; Lunar Orbiter Laser Altimeter; Lunar Reconnaissance Orbiter; Lunar Reconnaissance Orbiter Camera; melts; Mini-RF instrument; Moon; size; topography ER - TY - JOUR T1 - Helene; the face that launched a thousand slips AN - 1623274315; 2014-090986 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Moore, Jeff M AU - Umurhan, O M AU - Howard, A D AU - Schenk, Paul M AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1192 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - icy satellites KW - imagery KW - patterns KW - impact features KW - orbits KW - landform evolution KW - giant planets KW - morphology KW - models KW - Saturn KW - planets KW - Cassini-Huygens Mission KW - mass movements KW - depressions KW - grooved terrains KW - impact craters KW - outer planets KW - Dione Satellite KW - satellites KW - landscapes KW - Lagrangian point KW - Helene Satellite KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1623274315?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Helene%3B+the+face+that+launched+a+thousand+slips&rft.au=Moore%2C+Jeff+M%3BUmurhan%2C+O+M%3BHoward%2C+A+D%3BSchenk%2C+Paul+M%3BAnonymous&rft.aulast=Moore&rft.aufirst=Jeff&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1192.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 17, 2014 N1 - Last updated - 2014-11-13 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Cassini-Huygens Mission; depressions; Dione Satellite; giant planets; grooved terrains; Helene Satellite; icy satellites; imagery; impact craters; impact features; Lagrangian point; landform evolution; landscapes; mass movements; models; morphology; orbits; outer planets; patterns; planets; satellites; Saturn ER - TY - JOUR T1 - Absolute age scenarios for an expanded inventory of large lunar basins; the importance of Nectaris AN - 1623274171; 2014-090993 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Frey, H V AU - McBride, M J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1101 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - impact features KW - Moon KW - late heavy bombardment KW - distribution KW - chronology KW - crater retention age KW - age KW - basins KW - impact craters KW - early heavy bombardment KW - temporal distribution KW - Mare Nectaris KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1623274171?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Absolute+age+scenarios+for+an+expanded+inventory+of+large+lunar+basins%3B+the+importance+of+Nectaris&rft.au=Frey%2C+H+V%3BMcBride%2C+M+J%3BAnonymous&rft.aulast=Frey&rft.aufirst=H&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1101.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 14 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 19, 2014 N1 - Last updated - 2014-11-13 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - age; basins; chronology; crater retention age; distribution; early heavy bombardment; impact craters; impact features; late heavy bombardment; Mare Nectaris; Moon; temporal distribution ER - TY - JOUR T1 - Topography of midsize icy satellites; 2, Tethys and the effects of Odysseus AN - 1623272123; 2014-090989 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Schenk, Paul M AU - Moore, Jeff M AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2598 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - cratering KW - icy satellites KW - Odysseus Basin KW - lineaments KW - global KW - Tethys Satellite KW - mapping KW - Ithaca Chasma KW - ejecta KW - Cassini-Huygens Mission KW - topography KW - impact basins KW - surface features KW - basins KW - tectonics KW - satellites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1623272123?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Topography+of+midsize+icy+satellites%3B+2%2C+Tethys+and+the+effects+of+Odysseus&rft.au=Schenk%2C+Paul+M%3BMoore%2C+Jeff+M%3BAnonymous&rft.aulast=Schenk&rft.aufirst=Paul&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2598.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 5 N1 - PubXState - TX N1 - Document feature - illus. incl. geol. sketch maps N1 - SuppNotes - Accessed on June 19, 2014 N1 - Last updated - 2014-11-13 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - basins; Cassini-Huygens Mission; cratering; ejecta; global; icy satellites; impact basins; Ithaca Chasma; lineaments; mapping; Odysseus Basin; satellites; surface features; tectonics; Tethys Satellite; topography ER - TY - JOUR T1 - Proposed radar-reflective minerals tested under Venus surface and atmospheric conditions AN - 1549618627; 2014-060136 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Kohler, E AU - Chevrier, V AU - Johnson, N AU - Craig, P AU - Lacy, C AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2321 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - surface properties KW - bismuth sulfide KW - experimental studies KW - Venus KW - coloradoite KW - roughness KW - radar methods KW - atmosphere KW - mapping KW - anomalies KW - highlands KW - simulation KW - dielectric constant KW - temperature KW - terrestrial planets KW - planets KW - tellurides KW - galena 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/1549618627?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Proposed+radar-reflective+minerals+tested+under+Venus+surface+and+atmospheric+conditions&rft.au=Kohler%2C+E%3BChevrier%2C+V%3BJohnson%2C+N%3BCraig%2C+P%3BLacy%2C+C%3BAnonymous&rft.aulast=Kohler&rft.aufirst=E&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2321.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 16 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on May 5, 2014 N1 - Last updated - 2014-07-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - anomalies; atmosphere; atmospheric pressure; bismuth sulfide; coloradoite; dielectric constant; experimental studies; galena; highlands; mapping; planets; pyrite; radar methods; roughness; simulation; sulfides; surface properties; tellurides; tellurobismuthite; temperature; terrestrial planets; Venus ER - TY - JOUR T1 - Impact lofted ejecta contribution to the lunar exosphere; experiments and results from the LADEE ultraviolet visible spectrometer AN - 1549618621; 2014-060147 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Hermalyn, B AU - Colaprete, A AU - Elphic, R C AU - Landis, D AU - Karcz, J AU - Osetinsky, L AU - Shirley, M AU - Vargo, K AU - Wooden, D AU - Cook, A M AU - Stubbs, T J AU - Glenar, D A AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2518 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - cratering KW - experimental studies KW - telescope methods KW - Moon KW - clastic sediments KW - LADEE KW - impacts KW - ejecta KW - limb observations KW - exosphere KW - laboratory studies KW - Lunar Atmosphere and Dust Environment Explorer KW - ultraviolet-visible spectrometer KW - dust KW - sediments KW - velocity KW - spectra KW - spectroscopy KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549618621?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+lofted+ejecta+contribution+to+the+lunar+exosphere%3B+experiments+and+results+from+the+LADEE+ultraviolet+visible+spectrometer&rft.au=Hermalyn%2C+B%3BColaprete%2C+A%3BElphic%2C+R+C%3BLandis%2C+D%3BKarcz%2C+J%3BOsetinsky%2C+L%3BShirley%2C+M%3BVargo%2C+K%3BWooden%2C+D%3BCook%2C+A+M%3BStubbs%2C+T+J%3BGlenar%2C+D+A%3BAnonymous&rft.aulast=Hermalyn&rft.aufirst=B&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2518.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 4 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 6, 2014 N1 - Last updated - 2014-07-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - clastic sediments; cratering; dust; ejecta; exosphere; experimental studies; impacts; laboratory studies; LADEE; limb observations; Lunar Atmosphere and Dust Environment Explorer; Moon; sediments; spectra; spectroscopy; telescope methods; ultraviolet-visible spectrometer; velocity ER - TY - JOUR T1 - MAHLI after dark; nighttime Mars Hand Lens Imager observations under LED illumination AN - 1549618523; 2014-060117 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Minitti, M E AU - Edgett, K S AU - Yingst, R A AU - Conrad, P G AU - Fisk, M R AU - Hardgrove, C J AU - Herkenhoff, K E AU - Kah, L C AU - Kennedy, M R AU - Krezoski, G M AU - Lemmon, M T AU - Lipkaman, L AU - Kuhn, S R AU - Robinson, M L AU - Tompkins, V V AU - Treiman, A AU - Williford, K H AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2029 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Yellowknife Bay KW - LED illumination KW - imagery KW - Mars KW - MAHLI KW - Mars Hand Lens Imager KW - terrestrial planets KW - planets KW - boreholes KW - Curiosity Rover KW - Mars Science Laboratory KW - CheMin KW - drilling KW - illumination KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549618523?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=MAHLI+after+dark%3B+nighttime+Mars+Hand+Lens+Imager+observations+under+LED+illumination&rft.au=Minitti%2C+M+E%3BEdgett%2C+K+S%3BYingst%2C+R+A%3BConrad%2C+P+G%3BFisk%2C+M+R%3BHardgrove%2C+C+J%3BHerkenhoff%2C+K+E%3BKah%2C+L+C%3BKennedy%2C+M+R%3BKrezoski%2C+G+M%3BLemmon%2C+M+T%3BLipkaman%2C+L%3BKuhn%2C+S+R%3BRobinson%2C+M+L%3BTompkins%2C+V+V%3BTreiman%2C+A%3BWilliford%2C+K+H%3BAnonymous&rft.aulast=Minitti&rft.aufirst=M&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2029.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 2 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 1, 2014 N1 - Last updated - 2014-11-13 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - boreholes; CheMin; Curiosity Rover; drilling; illumination; imagery; LED illumination; MAHLI; Mars; Mars Hand Lens Imager; Mars Science Laboratory; planets; terrestrial planets; Yellowknife Bay ER - TY - JOUR T1 - Core-mantle partitioning of volatile elements and the origin of volatile elements in Earth and Moon AN - 1549618474; 2014-060125 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Righter, K AU - Pando, K AU - Danielson, L AU - Nickodem, K AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2130 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - zinc KW - volcanic rocks KW - copper KW - igneous rocks KW - mantle KW - tin KW - temperature KW - partitioning KW - plutonic rocks KW - indium KW - volatile elements KW - basalts KW - Eh KW - upper mantle KW - magma oceans KW - antimony KW - gallium KW - Earth KW - accretion KW - Moon KW - arsenic KW - siderophile elements KW - ultramafics KW - Earth-Moon couple KW - metals KW - germanium KW - peridotites KW - lunar mantle KW - low temperature KW - core KW - 04:Extraterrestrial geology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549618474?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Core-mantle+partitioning+of+volatile+elements+and+the+origin+of+volatile+elements+in+Earth+and+Moon&rft.au=Righter%2C+K%3BPando%2C+K%3BDanielson%2C+L%3BNickodem%2C+K%3BAnonymous&rft.aulast=Righter&rft.aufirst=K&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2130.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 24 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 5, 2014 N1 - Last updated - 2014-07-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - accretion; antimony; arsenic; basalts; copper; core; Earth; Earth-Moon couple; Eh; gallium; germanium; igneous rocks; indium; low temperature; lunar mantle; magma oceans; mantle; metals; Moon; partitioning; peridotites; plutonic rocks; siderophile elements; temperature; tin; ultramafics; upper mantle; volatile elements; volcanic rocks; zinc ER - TY - JOUR T1 - Deep-seated contractional tectonics in Mare Crisium, the Moon AN - 1549618457; 2014-060211 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Byrne, Paul K AU - Klimczak, Christian AU - Solomon, Sean C AU - Mazarico, Erwan AU - Neumann, Gregory A AU - Zuber, Maria T AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2396 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Moon KW - lithosphere KW - Lunar Reconnaissance Orbiter Camera KW - GRAIL Mission KW - wrinkle ridges KW - Mare Crisium KW - displacements KW - digital terrain models KW - deformation KW - ring structures KW - deep-seated structures KW - models KW - gravity anomalies KW - Gravity Recovery and Interior Laboratory Mission KW - contraction KW - topography KW - dip KW - mascons KW - lunar crust KW - basins KW - Bouguer anomalies KW - tectonics KW - faults KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549618457?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Deep-seated+contractional+tectonics+in+Mare+Crisium%2C+the+Moon&rft.au=Byrne%2C+Paul+K%3BKlimczak%2C+Christian%3BSolomon%2C+Sean+C%3BMazarico%2C+Erwan%3BNeumann%2C+Gregory+A%3BZuber%2C+Maria+T%3BAnonymous&rft.aulast=Byrne&rft.aufirst=Paul&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2396.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 11 N1 - PubXState - TX N1 - Document feature - illus. incl. geol. sketch maps N1 - SuppNotes - Accessed on Apr. 29, 2014 N1 - Last updated - 2014-07-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - basins; Bouguer anomalies; contraction; deep-seated structures; deformation; digital terrain models; dip; displacements; faults; GRAIL Mission; gravity anomalies; Gravity Recovery and Interior Laboratory Mission; lithosphere; lunar crust; Lunar Reconnaissance Orbiter Camera; Mare Crisium; mascons; models; Moon; ring structures; tectonics; topography; wrinkle ridges ER - TY - JOUR T1 - Impact craters as probes of fluids on differentiated bodies AN - 1549618441; 2014-060226 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Osinski, G R AU - Tornabene, L L AU - Sears, Derek W G AU - Hughes, S S AU - Heldmann, J L AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2439 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Earth KW - impactites KW - impact features KW - asteroids KW - Vesta Asteroid KW - Moon KW - parent bodies KW - differentiation KW - Mars KW - fluid phase KW - ejecta KW - melts KW - terrestrial planets KW - morphology KW - planets KW - meteorites KW - impact melts KW - volatiles KW - physical properties KW - metamorphic rocks KW - impact craters KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549618441?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+craters+as+probes+of+fluids+on+differentiated+bodies&rft.au=Osinski%2C+G+R%3BTornabene%2C+L+L%3BSears%2C+Derek+W+G%3BHughes%2C+S+S%3BHeldmann%2C+J+L%3BAnonymous&rft.aulast=Osinski&rft.aufirst=G&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2439.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 12 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table, sect. N1 - SuppNotes - Accessed on Apr. 30, 2014 N1 - Last updated - 2014-07-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - asteroids; differentiation; Earth; ejecta; fluid phase; impact craters; impact features; impact melts; impactites; Mars; melts; metamorphic rocks; meteorites; Moon; morphology; parent bodies; physical properties; planets; terrestrial planets; Vesta Asteroid; volatiles ER - TY - JOUR T1 - GRAIL constraints on the vertical density structure of the lunar crust AN - 1549618439; 2014-060212 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Besserer, Jonathan AU - Nimmo, Francis AU - Wieczorek, Mark A AU - Weber, Renee C AU - Kiefer, Walter S AU - McGovern, Patrick J AU - Smith, David E AU - Zuber, Maria T AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2407 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Lunar Orbiter Laser Altimeter KW - fractured materials KW - density KW - Moon KW - GRAIL Mission KW - geophysical methods KW - maria KW - porosity KW - depth KW - spherical harmonic analysis KW - models KW - spatial distribution KW - South Pole-Aitken Basin KW - gravity methods KW - Gravity Recovery and Interior Laboratory Mission KW - topography KW - farside KW - lunar crust KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549618439?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=GRAIL+constraints+on+the+vertical+density+structure+of+the+lunar+crust&rft.au=Besserer%2C+Jonathan%3BNimmo%2C+Francis%3BWieczorek%2C+Mark+A%3BWeber%2C+Renee+C%3BKiefer%2C+Walter+S%3BMcGovern%2C+Patrick+J%3BSmith%2C+David+E%3BZuber%2C+Maria+T%3BAnonymous&rft.aulast=Besserer&rft.aufirst=Jonathan&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2407.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 19 N1 - PubXState - TX N1 - Document feature - geol. sketch maps N1 - SuppNotes - Accessed on Apr. 29, 2014 N1 - Last updated - 2014-07-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - density; depth; farside; fractured materials; geophysical methods; GRAIL Mission; gravity methods; Gravity Recovery and Interior Laboratory Mission; lunar crust; Lunar Orbiter Laser Altimeter; maria; models; Moon; porosity; South Pole-Aitken Basin; spatial distribution; spherical harmonic analysis; topography ER - TY - JOUR T1 - Upper limits on the propagation of constituents of the Chang'E-3 exhaust plume from LADEE observations AN - 1549618412; 2014-060149 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Hurley, Dana M AU - Benna, M AU - Mahaffy, P R AU - Elphic, R C AU - Colaprete, A AU - Plescia, J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2160 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - water KW - ammonium KW - Moon KW - altitude KW - landing sites KW - LADEE KW - simulation KW - nitrogen KW - gases KW - exosphere KW - carbon dioxide KW - argon KW - models KW - Lunar Atmosphere and Dust Environment Explorer KW - rocket exhaust KW - Mare Imbrium KW - Chang'e-3 Mission KW - noble gases KW - hydrogen KW - helium KW - orbital observations KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549618412?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Upper+limits+on+the+propagation+of+constituents+of+the+Chang%27E-3+exhaust+plume+from+LADEE+observations&rft.au=Hurley%2C+Dana+M%3BBenna%2C+M%3BMahaffy%2C+P+R%3BElphic%2C+R+C%3BColaprete%2C+A%3BPlescia%2C+J%3BAnonymous&rft.aulast=Hurley&rft.aufirst=Dana&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2160.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 6, 2014 N1 - Last updated - 2014-11-13 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - altitude; ammonium; argon; carbon dioxide; Chang'e-3 Mission; exosphere; gases; helium; hydrogen; LADEE; landing sites; Lunar Atmosphere and Dust Environment Explorer; Mare Imbrium; models; Moon; nitrogen; noble gases; orbital observations; regolith; rocket exhaust; simulation; water ER - TY - JOUR T1 - How much dust can be processed by a single lightning bolt in the solar nebula? AN - 1549617877; 2014-060170 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Nuth, Joseph A, III AU - Paquette, John A AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1132 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - oxygen KW - isotopes KW - condensation KW - isotope ratios KW - grain size KW - cosmochemistry KW - stable isotopes KW - temperature KW - solar nebula KW - models KW - size distribution KW - lightning KW - evaporation KW - cosmic dust KW - silicon monoxide KW - condensates KW - O-16 KW - high temperature KW - electrical currents KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549617877?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=How+much+dust+can+be+processed+by+a+single+lightning+bolt+in+the+solar+nebula%3F&rft.au=Nuth%2C+Joseph+A%2C+III%3BPaquette%2C+John+A%3BAnonymous&rft.aulast=Nuth&rft.aufirst=Joseph&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1132.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 11 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Apr. 24, 2014 N1 - Last updated - 2014-07-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - condensates; condensation; cosmic dust; cosmochemistry; electrical currents; evaporation; grain size; high temperature; isotope ratios; isotopes; lightning; models; O-16; oxygen; silicon monoxide; size distribution; solar nebula; stable isotopes; temperature ER - TY - JOUR T1 - Metal-silicate partitioning of tungsten from 10 to 50 GPa AN - 1549617869; 2014-060123 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Shofner, G A AU - Campbell, A J AU - Danielson, L AU - Rahman, Z AU - Righter, K AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1267 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - magma oceans KW - experimental studies KW - Earth KW - pressure KW - Hf/W KW - cobalt KW - igneous rocks KW - mantle KW - high pressure KW - ultramafics KW - temperature KW - physical properties KW - plutonic rocks KW - tungsten KW - metals KW - peridotites KW - nickel KW - core KW - high temperature KW - Eh KW - 17B:Geophysics of minerals and rocks UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549617869?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Metal-silicate+partitioning+of+tungsten+from+10+to+50+GPa&rft.au=Shofner%2C+G+A%3BCampbell%2C+A+J%3BDanielson%2C+L%3BRahman%2C+Z%3BRighter%2C+K%3BAnonymous&rft.aulast=Shofner&rft.aufirst=G&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1267.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 14 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 5, 2014 N1 - Last updated - 2014-07-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - cobalt; core; Earth; Eh; experimental studies; Hf/W; high pressure; high temperature; igneous rocks; magma oceans; mantle; metals; nickel; peridotites; physical properties; plutonic rocks; pressure; silicates; temperature; tungsten; ultramafics ER - TY - JOUR T1 - Mercury's 2nd-degree shape and geoid; lunar comparisons and thermal anomalies AN - 1549617861; 2014-060190 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Phillips, Roger J AU - Johnson, Catherine L AU - Perry, Mark E AU - Hauck, Steven A, II AU - James, Peter B AU - Mazarico, Erwan AU - Lemoine, Frank G AU - Neumann, Gregory A AU - Peale, Stanton J AU - Siegler, Matthew A AU - Smith, David E AU - Solomon, Sean C AU - Zuber, Maria T AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2634 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Moon KW - isostatic compensation KW - mantle KW - equilibrium KW - Mohorovicic discontinuity KW - temperature KW - terrestrial planets KW - spherical harmonic analysis KW - planets KW - thermal anomalies KW - Mercury Planet KW - terrestrial comparison KW - ellipticity KW - geoid KW - crust KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549617861?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Mercury%27s+2nd-degree+shape+and+geoid%3B+lunar+comparisons+and+thermal+anomalies&rft.au=Phillips%2C+Roger+J%3BJohnson%2C+Catherine+L%3BPerry%2C+Mark+E%3BHauck%2C+Steven+A%2C+II%3BJames%2C+Peter+B%3BMazarico%2C+Erwan%3BLemoine%2C+Frank+G%3BNeumann%2C+Gregory+A%3BPeale%2C+Stanton+J%3BSiegler%2C+Matthew+A%3BSmith%2C+David+E%3BSolomon%2C+Sean+C%3BZuber%2C+Maria+T%3BAnonymous&rft.aulast=Phillips&rft.aufirst=Roger&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2634.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 17 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on Apr. 25, 2014 N1 - Last updated - 2014-07-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - crust; ellipticity; equilibrium; geoid; isostatic compensation; mantle; Mercury Planet; Mohorovicic discontinuity; Moon; planets; spherical harmonic analysis; temperature; terrestrial comparison; terrestrial planets; thermal anomalies ER - TY - JOUR T1 - Experimental constraints on a Vesta magma ocean AN - 1549617832; 2014-060089 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Hoff, C AU - Jones, John H AU - Le, Loan AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1634 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - calcium KW - magmatic differentiation KW - magnesium KW - stony meteorites KW - oxygen KW - asteroids KW - olivine group KW - melts KW - fugacity KW - temperature KW - partitioning KW - meteorites KW - pyroxene group KW - phase equilibria KW - cumulates KW - olivine KW - orthosilicates KW - chain silicates KW - alkaline earth metals KW - magma oceans KW - experimental studies KW - Vesta Asteroid KW - diogenite KW - achondrites KW - nesosilicates KW - metals KW - magmas KW - eucrite KW - crystallization KW - orthopyroxene KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549617832?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+a+Vesta+magma+ocean&rft.au=Hoff%2C+C%3BJones%2C+John+H%3BLe%2C+Loan%3BAnonymous&rft.aulast=Hoff&rft.aufirst=C&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1634.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 9 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on Apr. 30, 2014 N1 - Last updated - 2014-07-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; alkaline earth metals; asteroids; calcium; chain silicates; crystallization; cumulates; diogenite; eucrite; experimental studies; fugacity; magma oceans; magmas; magmatic differentiation; magnesium; melts; metals; meteorites; nesosilicates; olivine; olivine group; orthopyroxene; orthosilicates; oxygen; partitioning; phase equilibria; pyroxene group; silicates; stony meteorites; temperature; Vesta Asteroid ER - TY - JOUR T1 - LADEE search for a dust exosphere; a historical perspective AN - 1549617821; 2014-060138 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Glenar, D A AU - Stubbs, T J AU - Elphic, R C AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2640 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Ultraviolet-Visible Spectrometer KW - Moon KW - Lunar Reconnaissance Orbiter KW - clastic sediments KW - altitude KW - alkali metals KW - Apollo Program KW - LADEE KW - sodium KW - lunar horizon glow KW - Lunar Dust Experiment KW - measurement KW - exosphere KW - brightness KW - size distribution KW - detection KW - metals KW - dust KW - sediments KW - Clementine Program KW - Apollo 15 KW - LDEX KW - Apollo 17 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549617821?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=LADEE+search+for+a+dust+exosphere%3B+a+historical+perspective&rft.au=Glenar%2C+D+A%3BStubbs%2C+T+J%3BElphic%2C+R+C%3BAnonymous&rft.aulast=Glenar&rft.aufirst=D&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2640.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 15 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 5, 2014 N1 - Last updated - 2014-11-13 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alkali metals; altitude; Apollo 15; Apollo 17; Apollo Program; brightness; clastic sediments; Clementine Program; detection; dust; exosphere; LADEE; LDEX; Lunar Dust Experiment; lunar horizon glow; Lunar Reconnaissance Orbiter; measurement; metals; Moon; sediments; size distribution; sodium; Ultraviolet-Visible Spectrometer ER - TY - JOUR T1 - Recent results from the Opportunity Rover's exploration of Endeavour Crater, Mars AN - 1549617778; 2014-060110 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Arvidson, R E AU - Squyres, S W AU - Gellert, R AU - Mittlefehldt, David W AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1400 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - Murray Ridge KW - CRISM KW - Opportunity Rover KW - geotraverses KW - smectite KW - Mars KW - exploration KW - clay minerals KW - Cape York KW - terrestrial planets KW - Mars Exploration Rover KW - aqueous alteration KW - planets KW - sheet silicates KW - HiRISE KW - Matijevic Formation KW - Matijevic Hill KW - Endeavour Crater KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549617778?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Recent+results+from+the+Opportunity+Rover%27s+exploration+of+Endeavour+Crater%2C+Mars&rft.au=Arvidson%2C+R+E%3BSquyres%2C+S+W%3BGellert%2C+R%3BMittlefehldt%2C+David+W%3BAnonymous&rft.aulast=Arvidson&rft.aufirst=R&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1400.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 4 N1 - PubXState - TX N1 - Last updated - 2015-06-18 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - aqueous alteration; Cape York; clay minerals; CRISM; Endeavour Crater; exploration; geotraverses; HiRISE; Mars; Mars Exploration Rover; Matijevic Formation; Matijevic Hill; Murray Ridge; Opportunity Rover; planets; sheet silicates; silicates; smectite; terrestrial planets ER - TY - JOUR T1 - Overview of the LADEE ultraviolet-visible spectrometer; design, operations and initial results AN - 1549617728; 2014-060146 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Colaprete, A AU - Elphic, R C AU - Landis, D AU - Karcz, J AU - Shirley, M AU - Vargo, K AU - Wooden, D AU - Hermalyn, B AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2566 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - monitoring KW - telescope methods KW - Moon KW - clastic sediments KW - alkali metals KW - atmosphere KW - LADEE KW - sodium KW - limb observations KW - exosphere KW - Lunar Atmosphere and Dust Environment Explorer KW - occultation KW - metals KW - ultraviolet-visible spectrometer KW - dust KW - sediments KW - potassium KW - spectra KW - chemical composition KW - instruments KW - design KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549617728?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Overview+of+the+LADEE+ultraviolet-visible+spectrometer%3B+design%2C+operations+and+initial+results&rft.au=Colaprete%2C+A%3BElphic%2C+R+C%3BLandis%2C+D%3BKarcz%2C+J%3BShirley%2C+M%3BVargo%2C+K%3BWooden%2C+D%3BHermalyn%2C+B%3BAnonymous&rft.aulast=Colaprete&rft.aufirst=A&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2566.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 6, 2014 N1 - Last updated - 2014-07-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alkali metals; atmosphere; chemical composition; clastic sediments; design; dust; exosphere; instruments; LADEE; limb observations; Lunar Atmosphere and Dust Environment Explorer; metals; monitoring; Moon; occultation; potassium; sediments; sodium; spectra; telescope methods; ultraviolet-visible spectrometer ER - TY - JOUR T1 - New observations of CO isotopologues toward massive protostars; an expanded view of molecular reservoirs in the galaxy AN - 1549617712; 2014-060231 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Smith, Rachel L AU - Blake, Geoffrey A AU - Boogert, A C Adwin AU - Pontoppidan, Klaus M AU - Lockwood, Alexandra C AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2563 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - protostars KW - oxygen KW - isotopes KW - isotope ratios KW - C-13/C-12 KW - self-shielding KW - cosmochemistry KW - AFGL 2136 protostar KW - stable isotopes KW - temperature KW - gases KW - carbon dioxide KW - mass KW - young stellar objects KW - carbon monoxide KW - stars KW - ice KW - carbon KW - Juggler Nebula KW - O-18 KW - O-17 KW - O-16 KW - isotopologues KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549617712?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=New+observations+of+CO+isotopologues+toward+massive+protostars%3B+an+expanded+view+of+molecular+reservoirs+in+the+galaxy&rft.au=Smith%2C+Rachel+L%3BBlake%2C+Geoffrey+A%3BBoogert%2C+A+C+Adwin%3BPontoppidan%2C+Klaus+M%3BLockwood%2C+Alexandra+C%3BAnonymous&rft.aulast=Smith&rft.aufirst=Rachel&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2563.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 17 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Apr. 30, 2014 N1 - Last updated - 2014-11-13 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - AFGL 2136 protostar; C-13/C-12; carbon; carbon dioxide; carbon monoxide; cosmochemistry; gases; ice; isotope ratios; isotopes; isotopologues; Juggler Nebula; mass; O-16; O-17; O-18; oxygen; protostars; self-shielding; stable isotopes; stars; temperature; young stellar objects ER - TY - JOUR T1 - The impact of meteoroid streams on the lunar atmosphere and dust environment during the LADEE mission AN - 1549617702; 2014-060141 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Stubbs, T J AU - Glenar, D A AU - Wang, Y AU - Hermalyn, B AU - Sarantos, M AU - Colaprete, A AU - Elphic, R C AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2705 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Moon KW - clastic sediments KW - trajectories KW - atmosphere KW - LADEE KW - meteoroids KW - impacts KW - ejecta KW - exosphere KW - Earth-Moon couple KW - Lunar Atmosphere and Dust Environment Explorer KW - meteoroid streams KW - dust KW - sediments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549617702?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+meteoroid+streams+on+the+lunar+atmosphere+and+dust+environment+during+the+LADEE+mission&rft.au=Stubbs%2C+T+J%3BGlenar%2C+D+A%3BWang%2C+Y%3BHermalyn%2C+B%3BSarantos%2C+M%3BColaprete%2C+A%3BElphic%2C+R+C%3BAnonymous&rft.aulast=Stubbs&rft.aufirst=T&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2705.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 5 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on May 5, 2014 N1 - Last updated - 2014-11-13 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - atmosphere; clastic sediments; dust; Earth-Moon couple; ejecta; exosphere; impacts; LADEE; Lunar Atmosphere and Dust Environment Explorer; meteoroid streams; meteoroids; Moon; sediments; trajectories ER - TY - JOUR T1 - LADEE UVS observations of solar occultation by exospheric dust above the lunar limb AN - 1549617689; 2014-060148 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Wooden, D H AU - Cook, A M AU - Colaprete, A AU - Shirley, M H AU - Vargo, K E AU - Elphic, R C AU - Stubbs, T J AU - Glenar, D A AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2123 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - telescope methods KW - Moon KW - clastic sediments KW - LADEE KW - limb observations KW - light curves KW - exosphere KW - absorption KW - Lunar Atmosphere and Dust Environment Explorer KW - occultation KW - ultraviolet-visible spectrometer KW - dust KW - sediments KW - spectra KW - spectroscopy KW - solar occultation KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549617689?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=LADEE+UVS+observations+of+solar+occultation+by+exospheric+dust+above+the+lunar+limb&rft.au=Wooden%2C+D+H%3BCook%2C+A+M%3BColaprete%2C+A%3BShirley%2C+M+H%3BVargo%2C+K+E%3BElphic%2C+R+C%3BStubbs%2C+T+J%3BGlenar%2C+D+A%3BAnonymous&rft.aulast=Wooden&rft.aufirst=D&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2123.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 2 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 6, 2014 N1 - Last updated - 2014-07-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - absorption; clastic sediments; dust; exosphere; LADEE; light curves; limb observations; Lunar Atmosphere and Dust Environment Explorer; Moon; occultation; sediments; solar occultation; spectra; spectroscopy; telescope methods; ultraviolet-visible spectrometer ER - TY - JOUR T1 - Chromium oxidation state in planetary basalts; oxygen fugacity indicator and critical variable for Cr-spinel stability AN - 1549617623; 2014-060160 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Bell, A S AU - Burger, P V AU - Le, Loan AU - Paprike, J J AU - Jones, J H AU - Shearer, C K AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2198 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - volcanic rocks KW - stony meteorites KW - oxygen KW - Martian meteorites KW - igneous rocks KW - buffers KW - melts KW - iron KW - fugacity KW - XANES spectra KW - partitioning KW - meteorites KW - ferric iron KW - pyroxene group KW - clinopyroxene KW - phase equilibria KW - basalts KW - oxides KW - valency KW - spectra KW - basaltic composition KW - Eh KW - chromium KW - chain silicates KW - experimental studies KW - oxidation KW - spinel KW - chrome spinel KW - achondrites KW - X-ray spectra KW - metals KW - phenocrysts KW - 05B:Petrology of meteorites and tektites KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549617623?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Chromium+oxidation+state+in+planetary+basalts%3B+oxygen+fugacity+indicator+and+critical+variable+for+Cr-spinel+stability&rft.au=Bell%2C+A+S%3BBurger%2C+P+V%3BLe%2C+Loan%3BPaprike%2C+J+J%3BJones%2C+J+H%3BShearer%2C+C+K%3BAnonymous&rft.aulast=Bell&rft.aufirst=A&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2198.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 5 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Apr. 24, 2014 N1 - Last updated - 2014-07-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; basaltic composition; basalts; buffers; chain silicates; chrome spinel; chromium; clinopyroxene; Eh; experimental studies; ferric iron; fugacity; igneous rocks; iron; Martian meteorites; melts; metals; meteorites; oxidation; oxides; oxygen; partitioning; phase equilibria; phenocrysts; pyroxene group; silicates; spectra; spinel; stony meteorites; valency; volcanic rocks; X-ray spectra; XANES spectra ER - TY - JOUR T1 - Looking for a source of water in Martian basaltic breccia NWA 7034 AN - 1549617428; 2014-060220 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Muttik, N AU - Agee, C B AU - McCubbin, F M AU - McCutcheon, W A AU - Provencio, P P AU - Keller, L P AU - Santos, A R AU - Shearer, C K AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2783 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - Northwest Africa Meteorites KW - goethite KW - Mars KW - metasomatism KW - infrared spectra KW - meteorites KW - FTIR spectra KW - NWA 7034 KW - hematite KW - oxides KW - hydrothermal alteration KW - spectra KW - basaltic composition KW - water KW - breccia KW - secondary minerals KW - saponite KW - smectite KW - ferrihydrite KW - TEM data KW - iron hydroxides KW - clay minerals KW - terrestrial planets KW - hydroxides KW - aqueous alteration KW - planets KW - sheet silicates KW - maghemite KW - magnetite KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549617428?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Looking+for+a+source+of+water+in+Martian+basaltic+breccia+NWA+7034&rft.au=Muttik%2C+N%3BAgee%2C+C+B%3BMcCubbin%2C+F+M%3BMcCutcheon%2C+W+A%3BProvencio%2C+P+P%3BKeller%2C+L+P%3BSantos%2C+A+R%3BShearer%2C+C+K%3BAnonymous&rft.aulast=Muttik&rft.aufirst=N&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2783.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 17 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Apr. 29, 2014 N1 - Last updated - 2014-07-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - aqueous alteration; basaltic composition; breccia; clay minerals; ferrihydrite; FTIR spectra; goethite; hematite; hydrothermal alteration; hydroxides; infrared spectra; iron hydroxides; maghemite; magnetite; Mars; metasomatism; meteorites; Northwest Africa Meteorites; NWA 7034; oxides; planets; saponite; secondary minerals; sheet silicates; silicates; smectite; spectra; TEM data; terrestrial planets; water ER - TY - JOUR T1 - Seismic and gravity modeling of the lunar megaregolith AN - 1549617379; 2014-060195 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Schmerr, Nicholas C AU - Han, Shin-Chan AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2632 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - Lunar Seismic Profiling Experiment KW - megaregolith KW - Moon KW - igneous rocks KW - GRAIL Mission KW - geophysical methods KW - direct problem KW - Apollo Program KW - Apollo Passive Seismic Experiment KW - porosity KW - depth KW - anorthosite KW - seismic methods KW - models KW - compaction KW - gravity methods KW - Gravity Recovery and Interior Laboratory Mission KW - plutonic rocks KW - velocity structure KW - lunar crust KW - thickness KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549617379?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Seismic+and+gravity+modeling+of+the+lunar+megaregolith&rft.au=Schmerr%2C+Nicholas+C%3BHan%2C+Shin-Chan%3BAnonymous&rft.aulast=Schmerr&rft.aufirst=Nicholas&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2632.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 18 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Apr. 28, 2014 N1 - Last updated - 2014-07-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - anorthosite; Apollo Passive Seismic Experiment; Apollo Program; compaction; depth; direct problem; geophysical methods; GRAIL Mission; gravity methods; Gravity Recovery and Interior Laboratory Mission; igneous rocks; lunar crust; Lunar Seismic Profiling Experiment; megaregolith; models; Moon; plutonic rocks; porosity; regolith; seismic methods; thickness; velocity structure ER - TY - JOUR T1 - Early results from exospheric observations by the Neutral Mass Spectrometer (NMS) AN - 1549617285; 2014-060145 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Benna, M AU - Mahaffy, P R AU - Hodges, R R AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1535 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - desorption KW - Moon KW - condensation KW - mass spectra KW - atmosphere KW - neutral mass spectrometer KW - mapping KW - LADEE KW - adsorption KW - gases KW - exosphere KW - argon KW - spatial distribution KW - Lunar Atmosphere and Dust Environment Explorer KW - noble gases KW - neon KW - helium KW - temporal distribution KW - spectra KW - orbital observations KW - diurnal variations KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549617285?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+results+from+exospheric+observations+by+the+Neutral+Mass+Spectrometer+%28NMS%29&rft.au=Benna%2C+M%3BMahaffy%2C+P+R%3BHodges%2C+R+R%3BAnonymous&rft.aulast=Benna&rft.aufirst=M&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1535.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 4 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 6, 2014 N1 - Last updated - 2014-11-13 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - adsorption; argon; atmosphere; condensation; desorption; diurnal variations; exosphere; gases; helium; instruments; LADEE; Lunar Atmosphere and Dust Environment Explorer; mapping; mass spectra; Moon; neon; neutral mass spectrometer; noble gases; orbital observations; spatial distribution; spectra; temporal distribution ER - TY - JOUR T1 - Lack of evidence of in-situ decay of aluminum-26 in a FeO-poor ferromagnesian crystalline silicate particle, Pyxie, from Comet Wild 2 AN - 1549617278; 2014-060236 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Nakashima, D AU - Ushikubo, T AU - Weisberg, M K AU - Zolensky, Michael E AU - Ebel, D S AU - Kita, N T AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1172 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - magnesium KW - oxygen KW - ion probe data KW - isotopes KW - Mg-26 KW - mass spectra KW - radioactive decay KW - stable isotopes KW - Al-26 KW - radioactive isotopes KW - pyroxene group KW - aluminum KW - Wild 2 Comet KW - framework silicates KW - Al-27/Al-26 KW - spectra KW - O-17/O-16 KW - chain silicates KW - alkaline earth metals KW - plagioclase KW - Stardust Mission KW - low-calcium pyroxene KW - isotope ratios KW - solar nebula KW - comets KW - metals KW - feldspar group KW - cometary dust KW - particles KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549617278?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Lack+of+evidence+of+in-situ+decay+of+aluminum-26+in+a+FeO-poor+ferromagnesian+crystalline+silicate+particle%2C+Pyxie%2C+from+Comet+Wild+2&rft.au=Nakashima%2C+D%3BUshikubo%2C+T%3BWeisberg%2C+M+K%3BZolensky%2C+Michael+E%3BEbel%2C+D+S%3BKita%2C+N+T%3BAnonymous&rft.aulast=Nakashima&rft.aufirst=D&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/1172.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 22 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Apr. 30, 2014 N1 - Last updated - 2014-07-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Al-26; Al-27/Al-26; alkaline earth metals; aluminum; chain silicates; cometary dust; comets; feldspar group; framework silicates; ion probe data; isotope ratios; isotopes; low-calcium pyroxene; magnesium; mass spectra; metals; Mg-26; O-17/O-16; oxygen; particles; plagioclase; pyroxene group; radioactive decay; radioactive isotopes; silicates; solar nebula; spectra; stable isotopes; Stardust Mission; Wild 2 Comet ER - TY - JOUR T1 - The geophysical nature of the Procellarum region of the Moon as revealed by GRAIL gravity data AN - 1549617269; 2014-060209 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Andrews-Hanna, Jeffrey C AU - Head, James W, III AU - Howett, C J A AU - Kiefer, Walter S AU - Lucey, P J AU - McGovern, Patrick J AU - Melosh, H J AU - Neumann, Gregory A AU - Phillips, R J AU - Schenk, P M AU - Smith, D E AU - Solomon, Sean C AU - Zuber, Maria T AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2679 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - rift zones KW - Moon KW - Procellarum KREEP Terrain KW - GRAIL Mission KW - Oceanus Procellarum KW - rifting KW - maria KW - triple junctions KW - gravity anomalies KW - Gravity Recovery and Interior Laboratory Mission KW - gravity field KW - topography KW - volcanism KW - magmas KW - lunar crust KW - thickness KW - Bouguer anomalies KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549617269?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+geophysical+nature+of+the+Procellarum+region+of+the+Moon+as+revealed+by+GRAIL+gravity+data&rft.au=Andrews-Hanna%2C+Jeffrey+C%3BHead%2C+James+W%2C+III%3BHowett%2C+C+J+A%3BKiefer%2C+Walter+S%3BLucey%2C+P+J%3BMcGovern%2C+Patrick+J%3BMelosh%2C+H+J%3BNeumann%2C+Gregory+A%3BPhillips%2C+R+J%3BSchenk%2C+P+M%3BSmith%2C+D+E%3BSolomon%2C+Sean+C%3BZuber%2C+Maria+T%3BAnonymous&rft.aulast=Andrews-Hanna&rft.aufirst=Jeffrey&rft.date=2014-01-01&rft.volume=45&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/lpsc2014/pdf/2679.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 12 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Apr. 28, 2014 N1 - Last updated - 2014-07-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - Bouguer anomalies; GRAIL Mission; gravity anomalies; gravity field; Gravity Recovery and Interior Laboratory Mission; lunar crust; magmas; maria; Moon; Oceanus Procellarum; Procellarum KREEP Terrain; rift zones; rifting; thickness; topography; triple junctions; volcanism ER - TY - NEWS T1 - LAS Tower Complete in Preparation for Orion's First Mission AN - 1470445317 JF - UPI Space Daily AU - Sasha Congiu for Langley Research Center Y1 - 2013/12/23/ PY - 2013 DA - 2013 Dec 23 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1470445317?accountid=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=LAS+Tower+Complete+in+Preparation+for+Orion%27s+First+Mission&rft.au=Sasha+Congiu+for+Langley+Research+Center&rft.aulast=Sasha+Congiu+for+Langley+Research+Center&rft.aufirst=&rft.date=2013-12-23&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 - 2013-12-23 ER - TY - JOUR T1 - Mass-independent fractionation of sulfur isotopes during broadband SO (sub 2) photolysis; comparison between (super 16) O- and (super 18) O-rich SO (sub 2) AN - 1507180089; 2014-018220 AB - This paper describes a comparison of ultraviolet photolysis experiments undertaken with SO (sub 2) (oxygen with isotopes at natural abundance levels) and S (super 18) O (sub 2) ( (super 18) O-substituted oxygen). Experiments were conducted in a closed photocell using a deuterium lamp (principally 190-235 nm) under pressure regimes (5-25 Torr) that produced optically thick conditions for (super 32) SO (sub 2) and variable optical depths for other isotopologues. The experiments, which were designed to examine the effects of intramolecular isotopic substitution of oxygen atoms on the S-MIF produced during UV photolysis of SO (sub 2) , reveal generally reduced sulfur fractionation for (super 18) O-rich SO (sub 2) as compared to (super 16) O-rich SO (sub 2) . Model shielding calculations were undertaken using spectra that were shifted due to changes in rotational and vibrational energy levels. The model calculations suggest that processes in addition to rotational and vibrational shifts in absorption spectra play a role in the experimentally produced isotope effects. Such additional processes may include differences in primary photoexcitation arising from smaller peak-to-valley amplitudes for fine structure of (super 18) O-rich SO (sub 2) absorption spectra or an isotopically selective process associated with transitions between excited states. Abstract Copyright (2013) Elsevier, B.V. JF - Chemical Geology AU - Franz, Heather B AU - Danielache, Sebastian O AU - Farquhar, James AU - Wing, Boswell A Y1 - 2013/12/20/ PY - 2013 DA - 2013 Dec 20 SP - 56 EP - 65 PB - Elsevier, Amsterdam VL - 362 SN - 0009-2541, 0009-2541 KW - sulfur dioxide KW - isotope fractionation KW - experimental studies KW - oxygen KW - isotopes KW - isotope ratios KW - photochemistry KW - stable isotopes KW - models KW - S-34/S-32 KW - photolysis KW - mathematical methods KW - O-18 KW - sulfur KW - O-16 KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1507180089?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Mass-independent+fractionation+of+sulfur+isotopes+during+broadband+SO+%28sub+2%29+photolysis%3B+comparison+between+%28super+16%29+O-+and+%28super+18%29+O-rich+SO+%28sub+2%29&rft.au=Franz%2C+Heather+B%3BDanielache%2C+Sebastian+O%3BFarquhar%2C+James%3BWing%2C+Boswell+A&rft.aulast=Franz&rft.aufirst=Heather&rft.date=2013-12-20&rft.volume=362&rft.issue=&rft.spage=56&rft.isbn=&rft.btitle=&rft.title=Chemical+Geology&rft.issn=00092541&rft_id=info:doi/10.1016%2Fj.chemgeo.2013.07.021 L2 - http://www.sciencedirect.com/science/journal/00092541 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2014-01-01 N1 - Number of references - 31 N1 - Document feature - illus. incl. 3 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-03-14 N1 - CODEN - CHGEAD N1 - SubjectsTermNotLitGenreText - experimental studies; isotope fractionation; isotope ratios; isotopes; mathematical methods; models; O-16; O-18; oxygen; photochemistry; photolysis; S-34/S-32; stable isotopes; sulfur; sulfur dioxide DO - http://dx.doi.org/10.1016/j.chemgeo.2013.07.021 ER - TY - JOUR T1 - The rise of oxygen and the hydrogen hourglass AN - 1507179876; 2014-018217 AB - Oxygenic photosynthesis appears to be necessary for an oxygen-rich atmosphere like Earth's. But available geological and geochemical evidence suggest that at least 200 Myr, and possibly more than 700 Myr, elapsed between the advent of oxygenic photosynthesis and the establishment of an oxygen atmosphere. The interregnum implies that at least one other necessary condition for O (sub 2) needed to be met. Here we argue that the second condition was the oxidation of the surface and crust to the point where O (sub 2) became more stable than competing reduced gases such as CH (sub 4) . The cause of Earth's surface oxidation would be the same cause as it is for other planets with oxidized surfaces: hydrogen escape to space. The duration of the interregnum would have been determined by the rate of hydrogen escape and by the size of the reduced reservoir that needed to be oxidized before O (sub 2) became favored. We suggest that continental growth has been influenced by hydrogen escape, and we speculate that, if there must be an external bias to biological evolution, hydrogen escape can be that bias. Abstract Copyright (2013) Elsevier, B.V. JF - Chemical Geology AU - Zahnle, Kevin J AU - Catling, David C AU - Claire, Mark W Y1 - 2013/12/20/ PY - 2013 DA - 2013 Dec 20 SP - 26 EP - 34 PB - Elsevier, Amsterdam VL - 362 SN - 0009-2541, 0009-2541 KW - photosynthesis KW - methane KW - upper Precambrian KW - Precambrian KW - oxygen KW - paleoatmosphere KW - photochemistry KW - aliphatic hydrocarbons KW - Proterozoic KW - biologic evolution KW - alkanes KW - paleoecology KW - carbon dioxide KW - organic compounds KW - paleoenvironment KW - chemical reactions KW - hydrogen KW - carbon KW - hydrocarbons KW - degassing KW - 12:Stratigraphy KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1507179876?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=The+rise+of+oxygen+and+the+hydrogen+hourglass&rft.au=Zahnle%2C+Kevin+J%3BCatling%2C+David+C%3BClaire%2C+Mark+W&rft.aulast=Zahnle&rft.aufirst=Kevin&rft.date=2013-12-20&rft.volume=362&rft.issue=&rft.spage=26&rft.isbn=&rft.btitle=&rft.title=Chemical+Geology&rft.issn=00092541&rft_id=info:doi/10.1016%2Fj.chemgeo.2013.08.004 L2 - http://www.sciencedirect.com/science/journal/00092541 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2014-01-01 N1 - Number of references - 77 N1 - Document feature - illus. N1 - Last updated - 2014-03-14 N1 - CODEN - CHGEAD N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; biologic evolution; carbon; carbon dioxide; chemical reactions; degassing; hydrocarbons; hydrogen; methane; organic compounds; oxygen; paleoatmosphere; paleoecology; paleoenvironment; photochemistry; photosynthesis; Precambrian; Proterozoic; upper Precambrian DO - http://dx.doi.org/10.1016/j.chemgeo.2013.08.004 ER - TY - NEWS T1 - Repurposing ISS Trash for Power and Water AN - 1468736872 JF - UPI Space Daily AU - S. Jenise Veris for Glenn Research Center Y1 - 2013/12/18/ PY - 2013 DA - 2013 Dec 18 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1468736872?accountid=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=Repurposing+ISS+Trash+for+Power+and+Water&rft.au=S.+Jenise+Veris+for+Glenn+Research+Center&rft.aulast=S.+Jenise+Veris+for+Glenn+Research+Center&rft.aufirst=&rft.date=2013-12-18&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 - 2013-12-18 ER - TY - JOUR T1 - Isotopes of nitrogen on Mars; atmospheric measurements by Curiosity's mass spectrometer AN - 1535205376; 2014-038880 AB - The Sample Analysis at Mars (SAM) instrument suite on the Mars Science Laboratory (MSL) measured a Mars atmospheric (super 14) N/ (super 15) N ratio of 173 + or - 11 on sol 341 of the mission, agreeing with Viking's measurement of 168 + or - 17. The MSL/SAM value was based on Quadrupole Mass Spectrometer measurements of an enriched atmospheric sample, with CO (sub 2) and H (sub 2) O removed. Doubly ionized nitrogen data at m/z 14 and 14.5 had the highest signal/background ratio, with results confirmed by m/z 28 and 29 data. Gases in SNC meteorite glasses have been interpreted as mixtures containing a Martian atmospheric component, based partly on distinctive (super 14) N/ (super 15) N and (super 40) Ar/ (super 14) N ratios. Recent MSL/SAM measurements of the (super 40) Ar/ (super 14) N ratio (0.51 + or - 0.01) are incompatible with the Viking ratio (0.35 + or - 0.08). The meteorite mixing line is more consistent with the atmospheric composition measured by Viking than by MSL. Abstract Copyright (2013), The Authors. Geophysical Research Letter published by Wiley on behalf of the American Geophysical Union. JF - Geophysical Research Letters AU - Wong, Michael H AU - Atreya, Sushil K AU - Mahaffy, Paul N AU - Franz, Heather B AU - Malespin, Charles AU - Trainer, Melissa G AU - Stern, Jennifer C AU - Conrad, Pamela G AU - Manning, Heidi L K AU - Pepin, Robert O AU - Becker, Richard H AU - McKay, Christopher P AU - Owen, Tobias C AU - Navarro-Gonzalez, Rafael AU - Jones, John H AU - Jakosky, Bruce M AU - Steele, Andrew Y1 - 2013/12/16/ PY - 2013 DA - 2013 Dec 16 SP - 6033 EP - 6037 PB - American Geophysical Union, Washington, DC VL - 40 IS - 23 SN - 0094-8276, 0094-8276 KW - N-15/N-14 KW - isotopes KW - isotope ratios KW - mass spectra KW - atmosphere KW - Mars KW - stable isotopes KW - nitrogen KW - terrestrial planets KW - Mars Exploration Rover KW - planets KW - Curiosity Rover KW - spectra KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1535205376?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Isotopes+of+nitrogen+on+Mars%3B+atmospheric+measurements+by+Curiosity%27s+mass+spectrometer&rft.au=Wong%2C+Michael+H%3BAtreya%2C+Sushil+K%3BMahaffy%2C+Paul+N%3BFranz%2C+Heather+B%3BMalespin%2C+Charles%3BTrainer%2C+Melissa+G%3BStern%2C+Jennifer+C%3BConrad%2C+Pamela+G%3BManning%2C+Heidi+L+K%3BPepin%2C+Robert+O%3BBecker%2C+Richard+H%3BMcKay%2C+Christopher+P%3BOwen%2C+Tobias+C%3BNavarro-Gonzalez%2C+Rafael%3BJones%2C+John+H%3BJakosky%2C+Bruce+M%3BSteele%2C+Andrew&rft.aulast=Wong&rft.aufirst=Michael&rft.date=2013-12-16&rft.volume=40&rft.issue=23&rft.spage=6033&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2013GL057840 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 44 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2014-06-13 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - atmosphere; Curiosity Rover; isotope ratios; isotopes; Mars; Mars Exploration Rover; mass spectra; N-15/N-14; nitrogen; planets; spectra; stable isotopes; terrestrial planets DO - http://dx.doi.org/10.1002/2013GL057840 ER - TY - JOUR T1 - The sulfur budget of the 2011 Grimsvotn eruption, Iceland AN - 1535205350; 2014-038891 AB - Sulfur concentrations have been measured in 28 melt inclusions (MIs) in plagioclase, clinopyroxene, and olivine crystals extracted from tephra produced during the explosive eruption of Grimsvotn in May 2011. The results are compared to sulfur concentrations in the groundmass glass in order to estimate the mass of sulfur brought to surface during the eruption. Satellite measurements yield order of magnitude lower sulfur ( approximately 0.2 Tg) in the eruption plume than estimated from the difference between MI and the groundmass glass. This sulfur "deficit" is readily explained by sulfur adhering to tephra grains but principally by sulfide globules caused by basalt-sulfide melt exsolution before degassing. A mass balance calculation reveals that approximately approximately 0.8 Tg of SO (sub 2) is present as globules, representing approximately 50% of the total sulfur budget. Most of the sulfide globules likely reside at depth due to their elevated density, for potential later remobilization by new magma or hydrothermal circulation. Abstract Copyright (2013), . American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Sigmarsson, Olgeir AU - Haddadi, Baptiste AU - Carn, Simon AU - Moune, Severine AU - Gudnason, Jonas AU - Yang, Kai AU - Clarisse, Lieven Y1 - 2013/12/16/ PY - 2013 DA - 2013 Dec 16 SP - 6095 EP - 6100 PB - American Geophysical Union, Washington, DC VL - 40 IS - 23 SN - 0094-8276, 0094-8276 KW - sulfur dioxide KW - Western Europe KW - volcanic rocks KW - igneous rocks KW - Europe KW - satellite methods KW - melt inclusions KW - explosive eruptions KW - pyroclastics KW - volcanism KW - Grimsvotn KW - eruptions KW - inclusions KW - volcanoes KW - fluid inclusions KW - Vatnajokull KW - Iceland KW - chemical composition KW - remote sensing KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1535205350?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+sulfur+budget+of+the+2011+Grimsvotn+eruption%2C+Iceland&rft.au=Sigmarsson%2C+Olgeir%3BHaddadi%2C+Baptiste%3BCarn%2C+Simon%3BMoune%2C+Severine%3BGudnason%2C+Jonas%3BYang%2C+Kai%3BClarisse%2C+Lieven&rft.aulast=Sigmarsson&rft.aufirst=Olgeir&rft.date=2013-12-16&rft.volume=40&rft.issue=23&rft.spage=6095&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2013GL057760 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 45 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2014-06-13 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - chemical composition; eruptions; Europe; explosive eruptions; fluid inclusions; Grimsvotn; Iceland; igneous rocks; inclusions; melt inclusions; pyroclastics; remote sensing; satellite methods; sulfur dioxide; Vatnajokull; volcanic rocks; volcanism; volcanoes; Western Europe DO - http://dx.doi.org/10.1002/2013GL057760 ER - TY - JOUR T1 - Reaching 1 m deep on Mars; the icebreaker drill AN - 1535202251; 2014-038731 AB - The future exploration of Mars will require access to the subsurface, along with acquisition of samples for scientific analysis and ground-truthing of water ice and mineral reserves for in situ resource utilization. The Icebreaker drill is an integral part of the Icebreaker mission concept to search for life in ice-rich regions on Mars. Since the mission targets Mars Special Regions as defined by the Committee on Space Research (COSPAR), the drill has to meet the appropriate cleanliness standards as requested by NASA's Planetary Protection Office. In addition, the Icebreaker mission carries life-detection instruments; and in turn, the drill and sample delivery system have to meet stringent contamination requirements to prevent false positives. This paper reports on the development and testing of the Icebreaker drill, a 1 m class rotary-percussive drill and triple redundant sample delivery system. The drill acquires subsurface samples in short, approximately 10 cm bites, which makes the sampling system robust and prevents thawing and phase changes in the target materials. Autonomous drilling, sample acquisition, and sample transfer have been successfully demonstrated in Mars analog environments in the Arctic and the Antarctic Dry Valleys, as well as in a Mars environmental chamber. In all environments, the drill has been shown to perform at the "1-1-100-100" level; that is, it drilled to 1?m depth in approximately 1 hour with less than 100 N weight on bit and approximately 100 W of power. The drilled substrate varied and included pure ice, ice-rich regolith with and without rocks and with and without 2% perchlorate, and whole rocks. The drill is currently at a Technology Readiness Level (TRL) of 5. The next-generation Icebreaker drill weighs 10 kg, which is representative of the flightlike model at TRL 5/6. JF - Astrobiology AU - Zacny, K AU - Paulsen, G AU - McKay, C P AU - Glass, B AU - Dave, A AU - Davila, A F AU - Marinova, M AU - Mellerowicz, B AU - Heldmann, J AU - Stoker, C AU - Cabrol, Nathalie AU - Hedlund, M AU - Craft, J Y1 - 2013/12/16/ PY - 2013 DA - 2013 Dec 16 SP - 1166 EP - 1198 PB - Mary Ann Liebert, Larchmont, NY VL - 13 IS - 12 SN - 1531-1074, 1531-1074 KW - permafrost KW - astrobiology KW - Mars KW - excavations KW - mineral resources KW - Mars Phoenix Mission KW - exploration KW - Mars Exploration Rover KW - ground truth KW - sampling KW - ice KW - future KW - Icebreaker Life Mission KW - ground ice KW - drilling KW - water KW - soils KW - Viking Program KW - perchlorate KW - depth KW - terrestrial planets KW - planets KW - detection KW - Mars Science Laboratory KW - terrestrial comparison KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1535202251?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Astrobiology&rft.atitle=Reaching+1+m+deep+on+Mars%3B+the+icebreaker+drill&rft.au=Zacny%2C+K%3BPaulsen%2C+G%3BMcKay%2C+C+P%3BGlass%2C+B%3BDave%2C+A%3BDavila%2C+A+F%3BMarinova%2C+M%3BMellerowicz%2C+B%3BHeldmann%2C+J%3BStoker%2C+C%3BCabrol%2C+Nathalie%3BHedlund%2C+M%3BCraft%2C+J&rft.aulast=Zacny&rft.aufirst=K&rft.date=2013-12-16&rft.volume=13&rft.issue=12&rft.spage=1166&rft.isbn=&rft.btitle=&rft.title=Astrobiology&rft.issn=15311074&rft_id=info:doi/10.1089%2Fast.2013.1038 L2 - http://www.liebertpub.com/publication.aspx?pub_id=99 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 77 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2014-08-14 N1 - SubjectsTermNotLitGenreText - astrobiology; depth; detection; drilling; excavations; exploration; future; ground ice; ground truth; ice; Icebreaker Life Mission; instruments; Mars; Mars Exploration Rover; Mars Phoenix Mission; Mars Science Laboratory; mineral resources; perchlorate; permafrost; planets; sampling; soils; terrestrial comparison; terrestrial planets; Viking Program; water DO - http://dx.doi.org/10.1089/ast.2013.1038 ER - TY - NEWS T1 - Comet ISON vs. the Solar Storm AN - 1468442332 JF - UPI Space Daily AU - Dr Tony Phillips for NASA Science News Y1 - 2013/12/16/ PY - 2013 DA - 2013 Dec 16 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1468442332?accountid=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=Comet+ISON+vs.+the+Solar+Storm&rft.au=Dr+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2013-12-16&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 - 2013-12-16 ER - TY - JOUR T1 - The primary fO (sub 2) of basalts examined by the Spirit Rover in Gusev Crater, Mars; evidence for multiple redox states in the Martian interior AN - 1507182625; 2014-018179 AB - The primary oxygen fugacity (fO (sub 2) ) of basaltic melts reflects the mantle source oxidation state, dictates the crystallizing assemblage, and determines how the magma will evolve. Basalts examined by the Spirit Mars Exploration Rover in Gusev Crater range from the K-poor Adirondack class (0.02 wt% K (sub 2) O) to K-rich Backstay class (up to 1.2 wt% K (sub 2) O) and exhibit substantially more variation than observed in martian basaltic meteorites. The ratios of ferric to total iron (Fe (super 3+) /Fe (sub T) ) measured by the Mossbauer spectrometer are high (equivalent to -0.76 to +2.98Delta QFM; quartz-fayalite-magnetite buffer as defined by Wones and Gilbert, 1969), reflecting secondary Fe (super 3+) phases. By combining the Fe (super 3+) /Fe (sub T) of the igneous minerals (olivine, pyroxene, and magnetite) determined by Mossbauer spectrometer, we estimate primary fO (sub 2) for the Gusev basalts to be -3.6 to 0.5Delta QFM. Estimating the fO (sub 2) as a function of the dependence of the CIPW normative fayalite/magnetite ratios on Fe (super 3+) /Fe (sub T) yields a slightly smaller range of -2.58 to +0.57Delta QFM. General similarity between the fO (sub 2) estimated for the Gusev basalts and ranges in fO (sub 2) for the shergottitic meteorites (-3.8 to 0.2Delta QFM; Herd, 2003; Goodrich et al., 2003) suggests that the overall range of fO (sub 2) for the martian igneous rocks and mantle is relatively restricted. Like the shergottites (Herd, 2003), estimated fO (sub 2) of three Gusev classes (Adirondack, Barnhill and Irvine) correlates with a proxy for LREE enrichment (K (sub 2) O/TiO (sub 2) ). This suggests mixing between melts or fluids derived from reservoirs with contrasting fO (sub 2) and REE characteristics. Oxygen fugacity estimates for the martian interior suggest that tectonic processes have not led to sufficient recycling of oxidized surface material into the martian interior to entirely affect the overall oxidation state of the mantle. Abstract Copyright (2013) Elsevier, B.V. JF - Earth and Planetary Science Letters AU - Schmidt, Mariek E AU - Schrader, Christian M AU - McCoy, Timothy J Y1 - 2013/12/15/ PY - 2013 DA - 2013 Dec 15 SP - 198 EP - 208 PB - Elsevier, Amsterdam VL - 384 SN - 0012-821X, 0012-821X KW - volcanic rocks KW - stony meteorites KW - Spirit Rover KW - oxygen KW - Martian meteorites KW - igneous rocks KW - mantle KW - Mars KW - iron KW - fugacity KW - SNC Meteorites KW - Mars Exploration Rover KW - meteorites KW - ferric iron KW - mixing KW - basalts KW - tectonics KW - spectra KW - rare earths KW - Gusev Crater KW - Eh KW - Mossbauer spectra KW - incompatible elements KW - achondrites KW - terrestrial planets KW - planets KW - shergottite KW - metals KW - planetary interiors KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1507182625?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=The+primary+fO+%28sub+2%29+of+basalts+examined+by+the+Spirit+Rover+in+Gusev+Crater%2C+Mars%3B+evidence+for+multiple+redox+states+in+the+Martian+interior&rft.au=Schmidt%2C+Mariek+E%3BSchrader%2C+Christian+M%3BMcCoy%2C+Timothy+J&rft.aulast=Schmidt&rft.aufirst=Mariek&rft.date=2013-12-15&rft.volume=384&rft.issue=&rft.spage=198&rft.isbn=&rft.btitle=&rft.title=Earth+and+Planetary+Science+Letters&rft.issn=0012821X&rft_id=info:doi/10.1016%2Fj.epsl.2013.10.005 L2 - http://www.sciencedirect.com/science/journal/0012821X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2014-01-01 N1 - Number of references - 67 N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2014-03-14 N1 - CODEN - EPSLA2 N1 - SubjectsTermNotLitGenreText - achondrites; basalts; Eh; ferric iron; fugacity; Gusev Crater; igneous rocks; incompatible elements; iron; mantle; Mars; Mars Exploration Rover; Martian meteorites; metals; meteorites; mixing; Mossbauer spectra; oxygen; planetary interiors; planets; rare earths; shergottite; SNC Meteorites; spectra; Spirit Rover; stony meteorites; tectonics; terrestrial planets; volcanic rocks DO - http://dx.doi.org/10.1016/j.epsl.2013.10.005 ER - TY - JOUR T1 - Microstructure variability in freshwater microbialites, Pavilion Lake, Canada AN - 1507175211; 2014-016545 AB - Calcite microbialites in Pavilion Lake, British Columbia, exhibit a diverse range in macro-morphology, biomass abundance, porosity, and mineral content. To evaluate the role of microorganisms in their formation, samples collected from a range of depths were examined by scanning electron microscopy (SEM) and synchrotron radiation-based micro-X-ray fluorescence (mu m-XRF) spectroscopy to characterize both their outer surfaces as well as internal structures. Observed trends in both surface colonization as well as microbialite framework with increasing lake depth include decreasing microbial abundance on outer surfaces as well as increasing ratios of carbonate:biomass in the microbialites. Microscopic investigations of the interiors show bacteria and algae entrapped within calcite, with this calcite exhibiting micropores and casts similar in size and shape to microorganisms. Based on these observations, it is hypothesized that microbialite development in Pavilion Lake initiates calcite precipitation in phototrophic microbial mats, i.e., combined phototrophy and heterotrophy, followed by heterotrophic oxidation of organic matter leading to eventual carbonate infilling of the microbial-mineral matrix. In addition, an observed shift from cyanobacteria to algae with increasing lake depth suggests variability in contemporary conditions controlling microbialite growth and diagenesis. High photosynthetic growth rates at shallower depths result in significant porosity and friability due to biomass accumulation outpacing carbonate precipitation. At intermediate depths, lower light levels and slower growth rates of phototrophs lead to a greater proportion of the microbialite matrix being in-filled by carbonate. Carbonates precipitate initially within the bacteria-EPS matrix, with abundant uncalcified algae maintaining microbialite porosity. In the deepest waters, the presence of only sparse algal colonization as well as fine-grained, laminated metal-rich sediments covering microbialites suggests that present-day insolation levels are too low to support the development of photosynthetic microbial mats. As a consequence, heterotrophic carbonate precipitation has progressively in-filled these microbialite interiors to create lithified calcite fabrics that exhibit minimal porosity but preserve the casts of microorganisms as biosignatures. While the origin of microbialites in Pavilion Lake remains unknown, current observations provide valuable information in evaluating how environmental conditions influence microbialite growth in a freshwater, lacustrine environment. Abstract Copyright (2013) Elsevier, B.V. JF - Palaeogeography, Palaeoclimatology, Palaeoecology AU - Omelon, Christopher R AU - Brady, Allyson L AU - Slater, Greg F AU - Laval, Bernard AU - Lim, Darlene S S AU - Southam, Gordon Y1 - 2013/12/15/ PY - 2013 DA - 2013 Dec 15 SP - 62 EP - 70 PB - Elsevier, Amsterdam VL - 392 SN - 0031-0182, 0031-0182 KW - limestone KW - microstructure KW - microbial mats KW - algae KW - manganese KW - Holocene KW - southern British Columbia KW - iron KW - variations KW - Pavilion Lake KW - modern KW - Cenozoic KW - sedimentary rocks KW - X-ray fluorescence spectra KW - spectra KW - sedimentary structures KW - biomineralization KW - Plantae KW - Quaternary KW - biogenic structures KW - British Columbia KW - rates KW - electron microscopy data KW - fresh-water environment KW - depth KW - calcite KW - genesis KW - Canada KW - metals KW - microbialite KW - bacteria KW - Western Canada KW - upper Holocene KW - carbonate rocks KW - carbonates KW - SEM data KW - 24:Quaternary geology KW - 06A:Sedimentary petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1507175211?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Palaeogeography%2C+Palaeoclimatology%2C+Palaeoecology&rft.atitle=Microstructure+variability+in+freshwater+microbialites%2C+Pavilion+Lake%2C+Canada&rft.au=Omelon%2C+Christopher+R%3BBrady%2C+Allyson+L%3BSlater%2C+Greg+F%3BLaval%2C+Bernard%3BLim%2C+Darlene+S+S%3BSoutham%2C+Gordon&rft.aulast=Omelon&rft.aufirst=Christopher&rft.date=2013-12-15&rft.volume=392&rft.issue=&rft.spage=62&rft.isbn=&rft.btitle=&rft.title=Palaeogeography%2C+Palaeoclimatology%2C+Palaeoecology&rft.issn=00310182&rft_id=info:doi/10.1016%2Fj.palaeo.2013.08.017 L2 - http://www.sciencedirect.com/science/journal/00310182 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2014-01-01 N1 - Number of references - 38 N1 - Document feature - illus. incl. sketch map N1 - SuppNotes - PLRP Publ. No. 13-08 N1 - Last updated - 2014-05-15 N1 - CODEN - PPPYAB N1 - SubjectsTermNotLitGenreText - algae; bacteria; biogenic structures; biomineralization; British Columbia; calcite; Canada; carbonate rocks; carbonates; Cenozoic; depth; electron microscopy data; fresh-water environment; genesis; Holocene; iron; limestone; manganese; metals; microbial mats; microbialite; microstructure; modern; Pavilion Lake; Plantae; Quaternary; rates; sedimentary rocks; sedimentary structures; SEM data; southern British Columbia; spectra; upper Holocene; variations; Western Canada; X-ray fluorescence spectra DO - http://dx.doi.org/10.1016/j.palaeo.2013.08.017 ER - TY - CPAPER T1 - The meteorology of storms that produce narrow bipolar events T2 - 46th American Geophysical Union Fall Meeting AN - 1510098008; 6272173 JF - 46th American Geophysical Union Fall Meeting AU - Lang, Timothy AU - McCaul, Eugene AU - Cummer, Steven Y1 - 2013/12/09/ PY - 2013 DA - 2013 Dec 09 KW - Storms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1510098008?accountid=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=46th+American+Geophysical+Union+Fall+Meeting&rft.atitle=The+meteorology+of+storms+that+produce+narrow+bipolar+events&rft.au=Lang%2C+Timothy%3BMcCaul%2C+Eugene%3BCummer%2C+Steven&rft.aulast=Lang&rft.aufirst=Timothy&rft.date=2013-12-09&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=46th+American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ L2 - http://agu-fm13.abstractcentral.com/planner.jsp LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-03-24 N1 - Last updated - 2014-03-26 ER - TY - CPAPER T1 - he Expected Performance from the NASA OCO-2 Mission T2 - 46th American Geophysical Union Fall Meeting AN - 1510097854; 6272129 JF - 46th American Geophysical Union Fall Meeting AU - Crisp, David AU - Eldering, Annmarie AU - Gunson, Michael AU - Pollock, Harold Y1 - 2013/12/09/ PY - 2013 DA - 2013 Dec 09 KW - Geography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1510097854?accountid=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=46th+American+Geophysical+Union+Fall+Meeting&rft.atitle=he+Expected+Performance+from+the+NASA+OCO-2+Mission&rft.au=Crisp%2C+David%3BEldering%2C+Annmarie%3BGunson%2C+Michael%3BPollock%2C+Harold&rft.aulast=Crisp&rft.aufirst=David&rft.date=2013-12-09&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=46th+American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ L2 - http://agu-fm13.abstractcentral.com/planner.jsp LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-03-24 N1 - Last updated - 2014-03-26 ER - TY - CPAPER T1 - Sensitivity of AIRS and ACOS retrievals to CO2 emissions from biomass burning T2 - 46th American Geophysical Union Fall Meeting AN - 1510097215; 6272133 JF - 46th American Geophysical Union Fall Meeting AU - Hearty, Thomas AU - Savtchenko, Andrey AU - Wei, Jennifer AU - Albayrak, Arif AU - Vollmer, Bruce Y1 - 2013/12/09/ PY - 2013 DA - 2013 Dec 09 KW - Burning UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1510097215?accountid=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=46th+American+Geophysical+Union+Fall+Meeting&rft.atitle=Sensitivity+of+AIRS+and+ACOS+retrievals+to+CO2+emissions+from+biomass+burning&rft.au=Hearty%2C+Thomas%3BSavtchenko%2C+Andrey%3BWei%2C+Jennifer%3BAlbayrak%2C+Arif%3BVollmer%2C+Bruce&rft.aulast=Hearty&rft.aufirst=Thomas&rft.date=2013-12-09&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=46th+American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ L2 - http://agu-fm13.abstractcentral.com/planner.jsp LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-03-24 N1 - Last updated - 2014-03-26 ER - TY - JOUR T1 - The lunar Moho and the internal structure of the Moon; a geophysical perspective AN - 1507180787; 2014-018256 AB - Extraterrestrial seismology saw its advent with the deployment of seismometers during the Apollo missions that were undertaken from July 1969 to December 1972. The Apollo lunar seismic data constitute a unique resource being the only seismic data set which can be used to infer the interior structure of a planetary body besides the Earth. On-going analysis and interpretation of the seismic data continues to provide constraints that help refine lunar origin and evolution. In addition to this, lateral variations in crustal thickness ( approximately 0-80 km) are being mapped out at increasing resolution from gravity and topography data that have and continue to be collected with a series of recent lunar orbiter missions. Many of these also carry onboard multi-spectral imaging equipment that is able to map out major-element concentration and surface mineralogy to high precision. These results coupled with improved laboratory-based petrological studies of lunar samples provide important constraints on models for lunar magma ocean evolution, which ultimately determines internal structure. Whereas existing constraints on initial depth of melting and differentiation from quantitative modeling suggested only partial Moon involvement (<500 km depth), more recent models tend to favor a completely molten Moon, although the former cannot be ruled out sensu stricto. Recent geophysical analysis coupled with thermodynamical computations of phase equilibria and physical properties of mantle minerals suggest that the Earth and Moon are compositionally distinct. Continued analysis of ground-based laser ranging data and recent discovery of possible core reflected phases in the Apollo lunar seismic data strengthens the case for a small dense lunar core with a radius of <400 km corresponding to 1-3% of lunar mass. Abstract Copyright (2013) Elsevier, B.V. JF - Tectonophysics AU - Khan, A AU - Pommier, A AU - Neumann, G A AU - Mosegaard, K Y1 - 2013/12/08/ PY - 2013 DA - 2013 Dec 08 SP - 331 EP - 352 PB - Elsevier, Amsterdam VL - 609 SN - 0040-1951, 0040-1951 KW - P-waves KW - moonquakes KW - data processing KW - elastic waves KW - Apollo Program KW - gravity methods KW - topography KW - phase equilibria KW - thickness KW - thermodynamic properties KW - satellites KW - body waves KW - seismology KW - Moon KW - magmatism KW - geophysical methods KW - Mohorovicic discontinuity KW - physical properties KW - velocity structure KW - planetary interiors KW - surveys KW - seismic waves KW - S-waves KW - crust KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1507180787?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Tectonophysics&rft.atitle=The+lunar+Moho+and+the+internal+structure+of+the+Moon%3B+a+geophysical+perspective&rft.au=Khan%2C+A%3BPommier%2C+A%3BNeumann%2C+G+A%3BMosegaard%2C+K&rft.aulast=Khan&rft.aufirst=A&rft.date=2013-12-08&rft.volume=609&rft.issue=&rft.spage=331&rft.isbn=&rft.btitle=&rft.title=Tectonophysics&rft.issn=00401951&rft_id=info:doi/10.1016%2Fj.tecto.2013.02.024 L2 - http://www.sciencedirect.com/science/journal/00401951 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2014-01-01 N1 - Number of references - 158 N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2014-03-14 N1 - CODEN - TCTOAM N1 - SubjectsTermNotLitGenreText - Apollo Program; body waves; crust; data processing; elastic waves; geophysical methods; gravity methods; magmatism; Mohorovicic discontinuity; Moon; moonquakes; P-waves; phase equilibria; physical properties; planetary interiors; S-waves; satellites; seismic waves; seismology; surveys; thermodynamic properties; thickness; topography; velocity structure DO - http://dx.doi.org/10.1016/j.tecto.2013.02.024 ER - TY - NEWS T1 - Egypt Marches to a Saudi Drummer AN - 1464483142 JF - UPI Space Daily AU - Staff Writers for NASA Science News Y1 - 2013/12/04/ PY - 2013 DA - 2013 Dec 04 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1464483142?accountid=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=Egypt+Marches+to+a+Saudi+Drummer&rft.au=Staff+Writers+for+NASA+Science+News&rft.aulast=Staff+Writers+for+NASA+Science+News&rft.aufirst=&rft.date=2013-12-04&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 - 2013-12-04 ER - TY - NEWS T1 - Comet ISON: What's Next? AN - 1464482806 JF - UPI Space Daily AU - Staff Writers for NASA Science News Y1 - 2013/12/04/ PY - 2013 DA - 2013 Dec 04 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1464482806?accountid=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=Comet+ISON%3A+What%27s+Next%3F&rft.au=Staff+Writers+for+NASA+Science+News&rft.aulast=Staff+Writers+for+NASA+Science+News&rft.aufirst=&rft.date=2013-12-04&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 - 2013-12-04 ER - TY - JOUR T1 - David S. McKay, 1936-2013 AN - 1827889213; PQ0003681194 JF - Astrobiology AU - Gibson, Everett K AU - Thomas-Keprta, Kathie AU - Clemett, Simon AU - Morris-Smith, Penny AD - Astromaterials Research Office, NASA Johnson Space Center, Houston, Texas. Y1 - 2013/12// PY - 2013 DA - December 2013 SP - 1203 EP - 1206 PB - Mary Ann Liebert, Inc., 2 Madison Ave Larchmont NY 10538-1962 United States VL - 13 IS - 12 SN - 1531-1074, 1531-1074 KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Biology KW - Q1 08202:Geographical distribution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1827889213?accountid=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=David+S.+McKay%2C+1936-2013&rft.au=Gibson%2C+Everett+K%3BThomas-Keprta%2C+Kathie%3BClemett%2C+Simon%3BMorris-Smith%2C+Penny&rft.aulast=Gibson&rft.aufirst=Everett&rft.date=2013-12-01&rft.volume=13&rft.issue=12&rft.spage=1203&rft.isbn=&rft.btitle=&rft.title=Astrobiology&rft.issn=15311074&rft_id=info:doi/10.1089%2Fast.2013.8425 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-10-01 N1 - Number of references - 4 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Biology DO - http://dx.doi.org/10.1089/ast.2013.8425 ER - TY - JOUR T1 - Retinal Non-Visual Photoreception in Space AN - 1762373505; PQ0002463171 AB - Background: Circadian rhythm disruption occurs during spaceflight, leading to crew health and performance decrements. Spaceflight-related retinal changes, including oxidative stress and neuronal loss, have been previously reported in mice. Methods: Animal tissue from experiments aboard shuttle missions STS-133 (BALB/cJ mice, albino strain) and STS-135 (C57BL mice, pigmented strain), along with ground controls, was examined to determine survival of intrinsically photosensitive retinal ganglion cells (ipRGC) and melanopsin expression in retinas of mice exposed to the spaceflight environment. Real-time qPCR (RTqPCT) and microarray approaches were used to analyze Opn4 (melanopsin) gene expression, while immunohistologic studies were conducted to detect melanopsin localization in the retina. Results: Opn4 expression was decreased in albino BALB/cJ mice exposed to spaceflight, as measured by RTqPCR, but not in C57BL mice samples as analyzed by microarray. Opn4 expression returned to control levels at 7 d postreturn in the BALB/cJ samples. Melanopsin positive RGCs were found in the expected proportion in all samples, except for the BALB/cJ samples at 1 d after flight, where virtually no immunoreactive cells were found. Discussion: Spaceflight environmental factors may affect the nonvisual function of the retina, mediated by a reduction in melanopsin expression and ipRGC survival, contributing to circadian disruption. JF - Aviation, Space, and Environmental Medicine AU - Zanello, Susana B AU - Nguyen, Audrey AU - Theriot, Corey A Y1 - 2013/12// PY - 2013 DA - December 2013 SP - 1277 EP - 1280 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 12 SN - 0095-6562, 0095-6562 KW - CSA Neurosciences Abstracts; Health & Safety Science Abstracts KW - melanopsin |a MeSH KW - opsin 4 |a MeSH KW - retina |a MeSH KW - circadian rhythm |a MeSH KW - spaceflight |a MeSH KW - melanopsin KW - Cell survival KW - Space flight KW - Retina KW - Retinal ganglion cells KW - Survival KW - Mice KW - Environmental factors KW - Gene expression KW - Oxidative stress KW - Photoreception KW - Circadian rhythms KW - N3 11001:Behavioral and Cognitive Neuroscience KW - H 2000:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1762373505?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=Retinal+Non-Visual+Photoreception+in+Space&rft.au=Zanello%2C+Susana+B%3BNguyen%2C+Audrey%3BTheriot%2C+Corey+A&rft.aulast=Zanello&rft.aufirst=Susana&rft.date=2013-12-01&rft.volume=84&rft.issue=12&rft.spage=1277&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/10.3357%2FASEM.3762.2013 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-02-01 N1 - Number of references - 18 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Gene expression; Cell survival; melanopsin; Retina; Space flight; Retinal ganglion cells; Oxidative stress; Circadian rhythms; Environmental factors; Photoreception; Survival; Mice DO - http://dx.doi.org/10.3357/ASEM.3762.2013 ER - TY - JOUR T1 - Modeling of Blood Lead Levels in Astronauts Exposed to Lead From Microgravity-Accelerated Bone Loss AN - 1762366890; PQ0002463156 AB - Introduction: Most astronauts experiencing prolonged microgravity undergo accelerated bone loss at a whole-body rate of 0.5-1% per month, with some load-bearing bones losing mass at normalized rates up to about 2.6% per month. The accompanying release of lead (Pb) stored in bones would increase the concentration of Pb in the blood (PbB), thereby complicating efforts to set acceptable Pb concentrations for spacecraft drinking water (PbW). Methods: A physiologically based pharmacokinetic (PBPK) model was modified to permit modeling the effects on PbB of temporarily increased rates of bone loss and various PbW concentrations. Results: The model predicts that, for the average American astronaut, the increase in PbB due to Pb released from bones would be more than offset by decreases in ingested or inhaled spacecraft environmental Pb, so that calculated PbB levels actually decrease in microgravity when PbW < about 9 [mu]g Pb [middot] L super(-1). Measured PbB in astronauts before and immediately after 6-mo stays on the International Space Station (ISS) support these results. Currently, PbW on the ISS averages 0.6 [mu]g Pb [middot] L super(-1) and PbW on Earth at the Johnson Space Center averages about 5 [mu]g Pb [middot] L super(-1). Conclusions: Most astronauts on long spaceflights will not be adversely affected by the release of lead from bones into the blood. A small percentage of astronauts (assuming there could be any who would have high concentrations of lead in their bones) could be at risk of experiencing elevated levels of PbB due to microgravity-accelerated release of Pb from their bones, depending on their individual rate of bone loss. JF - Aviation, Space, and Environmental Medicine AU - Garcia, Hector D AU - Hays, Sean M AU - Tsuji, Joyce S AD - Wyle Science, Technology and Engineering, 1290 Hercules Dr., Ste. 120, MC: BL37, Houston, TX 77058, hector.garcia-1@nasa.gov Y1 - 2013/12// PY - 2013 DA - December 2013 SP - 1229 EP - 1234 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 12 SN - 0095-6562, 0095-6562 KW - Calcium & Calcified Tissue Abstracts; Health & Safety Science Abstracts; Toxicology Abstracts KW - bone |a MeSH KW - PBPK |a MeSH KW - osteoporosis |a MeSH KW - drinking water |a MeSH KW - Bone (long) KW - Space flight KW - Physiology KW - Ingestion KW - Spacecraft KW - Lead KW - Pharmacokinetics KW - Blood levels KW - Models KW - Bone KW - Blood KW - Microgravity KW - Bone loss KW - Bone mass KW - Drinking water KW - H 2000:Transportation KW - X 24360:Metals KW - T 2025:Bone and Bone Diseases UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1762366890?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=Modeling+of+Blood+Lead+Levels+in+Astronauts+Exposed+to+Lead+From+Microgravity-Accelerated+Bone+Loss&rft.au=Garcia%2C+Hector+D%3BHays%2C+Sean+M%3BTsuji%2C+Joyce+S&rft.aulast=Garcia&rft.aufirst=Hector&rft.date=2013-12-01&rft.volume=84&rft.issue=12&rft.spage=1229&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/10.3357%2FASEM.3698.2013 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-02-01 N1 - Number of references - 21 N1 - Last updated - 2016-02-18 N1 - SubjectsTermNotLitGenreText - Bone (long); Microgravity; Blood; Space flight; Bone loss; Bone mass; Drinking water; Spacecraft; Pharmacokinetics; Lead; Models; Bone; Physiology; Ingestion; Blood levels DO - http://dx.doi.org/10.3357/ASEM.3698.2013 ER - TY - JOUR T1 - The effect of interactive gas-phase chemistry and aerosols on climate simulations over the last millennium AN - 1707526027; 2015-080526 AB - Significant computational resources are required for long transient simulations using coupled atmosphere-ocean general circulation models. Individual simulations from the NINT version of GISS ModelE-R (part of the CMIP5 archive) of the last millennium, from year 850 to 2005, enabled with only 3 water isotopologue tracers, required nearly equal 9 months of computational time on the state-of-the-art parallel computing cluster of NCCS. The additional requirements of the full chemistry module would increase this by a factor of nearly equal 3. And yet, it is well known that chemistry and aerosols are very important on climate, both regional and global. Therefore, we have designed a set of experiments where the ocean and sea ice boundary conditions of the coupled model, paired with the land surface, greenhouse gases, insolation, and total solar irradiance (TSI) forcing from the PMIP3 protocol are applied to a series of full-chemistry GISS ModelE snap-shots each 50-years through the last millennium. We will present results from atmosphere-only model simulations with the GISS ModelE, which includes interactive gas-phase chemistry and aerosols at decadal-scale time slices, driven by millennial-length simulations performed with the same model when coupled with an ocean model. The boundary conditions for the transient simulations follow the last millennium coordinated PMIP3 experiment protocol. This experiment directly links in with other pre-industrial experiments being completed as part of IPCC AR5, using the same model and resolution as in GISS IPCC AR5. The impact of the presence of short-lived gases and aerosols on the simulated climate is studied. The role of previously omitted forcing mechanisms will be performed during the whole simulated period. The results presented are the initial runs from a larger set of experiments that will assess the climate impact of changes to dust, sea-salt, and ocean-derived sulfate, biomass burning ozone-precursors and aerosols, organic carbon, wetland methane emissions, and a final set with all components. These species are standard components in the GISS model's 20th century simulations, so that we may compare millennial variability characteristics with those better constrained from more recent climate periods. Dust and sea-salt are wind-driven aerosols from deserts and oceans, sulfate comes from oxidation of volcanic and oceanic precursors, while organic carbon comes from biomass burning, secondary plant sources and primary oceanic emissions. Comparison of model and proxy records will test model-simulated mechanisms while the model provides insight into factors contributing to proxy variability. The addition of potentially important forcing mechanisms will enable a more comprehensive evaluation of the climate sensitivity. JF - American Geophysical Union Fall Meeting AU - Tsigaridis, K AU - LeGrande, A N AU - Healy, R J AU - Schmidt, G A AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract PP51A EP - 1924 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1707526027?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+interactive+gas-phase+chemistry+and+aerosols+on+climate+simulations+over+the+last+millennium&rft.au=Tsigaridis%2C+K%3BLeGrande%2C+A+N%3BHealy%2C+R+J%3BSchmidt%2C+G+A%3BAnonymous&rft.aulast=Tsigaridis&rft.aufirst=K&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-08-27 N1 - CODEN - #07548 ER - TY - JOUR T1 - Family matters; sphagnaceae versus Cyperaceae in peatland carbon storage AN - 1707525118; 2015-080446 AB - Peatlands are a vitally important part of the Earth's carbon cycle. What is unclear, however, is how peatland type influences the rate of carbon accumulation, the fate of that accumulated carbon in the short and long term, and the role of methane in the overall carbon cycle. Studies of modern peatlands have shown that fens (dominated by Cyperaceae) may accumulate peat more quickly than bogs (dominated by Sphagnaceae), but in many downcore studies, bog peat may have higher apparent accumulation rates. These generalizations, however, do not apply in all locations, climates, or times throughout the Holocene. To address this conundrum, we present data from several peatland locations throughout the circum-Arctic to determine what types of environments and climate regimes are effective for the long-term storage of carbon, fens or bogs, and what climate conditions promote the development of each peatland type. Our sites include peatlands in the Arctic and boreal regions of North America and Asia. We use a multiproxy approach to directly compare the apparent carbon accumulation rate and methane-recycling rate with peatland type and specific hydroclimatic parameters. To reconstruct peatland type, we use macrofossil analysis. We use compound-specific hydrogen isotope ratios of leaf-wax biomarkers to assess hydrological parameters such as growing season evaporation and seasonality of precipitation. We use the carbon isotope ratios of these same compounds to reconstruct the rate of methane recycling. By reconstructing peat type, carbon cycle and hydroclimatic parameters in the same samples, we most effectively compare their mutual influence. JF - American Geophysical Union Fall Meeting AU - Nichols, J E AU - Peteet, D M AU - Gemma, M AU - Fedio, C AU - Pavia, F J AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract PP11E EP - 08 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1707525118?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Family+matters%3B+sphagnaceae+versus+Cyperaceae+in+peatland+carbon+storage&rft.au=Nichols%2C+J+E%3BPeteet%2C+D+M%3BGemma%2C+M%3BFedio%2C+C%3BPavia%2C+F+J%3BAnonymous&rft.aulast=Nichols&rft.aufirst=J&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-08-27 N1 - CODEN - #07548 ER - TY - JOUR T1 - Past Asian Monsoon circulation from multiple tree-ring proxies and models AN - 1707520891; 2015-083320 AB - The Asian monsoon can be characterized in terms of precipitation variability as well as features of regional atmospheric circulation across a range of spatial and temporal scales. While multicentury time series of tree-ring widths at hundreds of sites across Asia provide estimates of past rainfall, the oxygen isotope ratios of annual rings at some of these sites can reveal broader regional atmosphere-ocean dynamics. Here we present a replicated, multicentury stable isotope series from Vietnam that integrates the influence of monsoon circulation on water isotopes. Stronger (weaker) monsoon flow over Indochina is associated with lower (higher) oxygen isotope values in our long-lived tropical conifers. Ring width and isotopes show particular coherence at multidecadal time scales, and together allow past precipitation amount and circulation strength to be disentangled. Combining multiple tree-ring proxies with simulations from isotope-enabled and paleoclimate general circulation models allows us to independently assess the mechanisms responsible for proxy formation and to evaluate how monsoon rainfall is influenced by ocean-atmosphere interactions at timescales from interannual to multidecadal. JF - American Geophysical Union Fall Meeting AU - Anchukaitis, K J AU - Herzog, M AU - Hernandez, M AU - Martin-Benito, D AU - Gagen, M AU - LeGrande, A N AU - Ummenhofer, C AU - Buckley, B AU - Cook, E R AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract PP43C EP - 01 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1707520891?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Past+Asian+Monsoon+circulation+from+multiple+tree-ring+proxies+and+models&rft.au=Anchukaitis%2C+K+J%3BHerzog%2C+M%3BHernandez%2C+M%3BMartin-Benito%2C+D%3BGagen%2C+M%3BLeGrande%2C+A+N%3BUmmenhofer%2C+C%3BBuckley%2C+B%3BCook%2C+E+R%3BAnonymous&rft.aulast=Anchukaitis&rft.aufirst=K&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-08-27 N1 - CODEN - #07548 ER - TY - JOUR T1 - Reconstruction of biomass combustion history using soot, char, and polycyclic aromatic hydrocarbons at Linsley Pond, Conn, USA AN - 1707519895; 2015-083319 AB - Biomass burning has become recognized as one of key elements of climate change. The occurrence of fires is a complex function of climate, moisture, vegetation and landscape type. Fires impact environments in multiple ways, e.g., increase in soil erosion, change of vegetation type, and increase in nutrient levels in soils and lakes that receive runoff from burned areas. Sediment cores that contain an archive of deposition of combustion products can help reconstruct the history of past fires. In this study, alkylated PAHs and black carbon (char and soot) were used to explore the paleofire history reflected in a sediment core collected from Linsley Pond, Connecticut (41 degrees 18'N, 72 degrees 45'W). Biomass type and combustion levels of these fires and whether they occurred locally or regionally can be derived from these indicators. Such details, together with other paleoenvironmental indicators recorded in sediment cores (e.g., pollen, macrofossils, and LOI) helped unravel the environmental conditions before and after fires. Alkanes, PAHs, alkylated PAHs, and the ratio of soot to char indicate that in the Younger Dryas, fire occurred at a relatively low temperature (i.e. smoldering), followed by an abrupt increase of flaming combustion of softwood (white pine) at the Holocene boundary. Our paleofire data supports the previous interpretations of a shift towards a warm and dry climate in the southern New England region at this time. JF - American Geophysical Union Fall Meeting AU - Yan, B AU - Han, Y AU - Peteet, D M AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract PP43B EP - 2098 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1707519895?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Reconstruction+of+biomass+combustion+history+using+soot%2C+char%2C+and+polycyclic+aromatic+hydrocarbons+at+Linsley+Pond%2C+Conn%2C+USA&rft.au=Yan%2C+B%3BHan%2C+Y%3BPeteet%2C+D+M%3BAnonymous&rft.aulast=Yan&rft.aufirst=B&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-08-27 N1 - CODEN - #07548 ER - TY - JOUR T1 - Holocene climate changes in the Cape Hatteras region AN - 1707519641; 2015-083144 AB - In the last century many studies have been done in various naturally occurring archives to understand the nature, timing and causes of Holocene natural climate oscillations. Most of the available Holocene climatic reconstructions are however, not based on a direct comparison of terrestrial, marine and ice records making it difficult to obtain an accurate understanding of the interactions of the atmosphere-ocean-land systems and their relationship in global climate variability. Few studies based on direct sea land comparison have been reported for some key areas of the eastern North Atlantic but almost none in the western North Atlantic. Here we present a direct comparison between terrestrial (pollen) and marine (planktonic delta 18O) proxies from a well dated (ten AMS 14C dates on planktonic foraminifera and seaweed) slope core (KNR 178-2 JPC 32), retrieved close to Cape Hatteras (35 degrees 58.58'N, 74 degrees 42.77'W, 1006 m). This study provides information on eastern North America vegetation and on the northwestern Atlantic sea surface response to both Holocene long-term and rapid climate changes. Five intervals, marked mainly by changes in temperate trees are associated with long term climate shifts (12000-9150 ka; 9150-7250 ka; 7250-5350 ka; 5350-2800 ka; 2800-700 ka). Over these intervals, several abrupt cooling events are noted, as well as several indications of shifts in moisture. The comparison of our data with those available and unpublished records from several key sites of the North Atlantic region, gives insights into the nature, timing and causes of Holocene climate oscillations in the North Atlantic region and in particular off Cape Hatteras. JF - American Geophysical Union Fall Meeting AU - Naughton, F AU - Keigwin, L D AU - Peteet, D M AU - Desprat, S AU - Oliveira, D AU - Abrantes, F AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract PP33A EP - 1910 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1707519641?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Holocene+climate+changes+in+the+Cape+Hatteras+region&rft.au=Naughton%2C+F%3BKeigwin%2C+L+D%3BPeteet%2C+D+M%3BDesprat%2C+S%3BOliveira%2C+D%3BAbrantes%2C+F%3BAnonymous&rft.aulast=Naughton&rft.aufirst=F&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-08-27 N1 - CODEN - #07548 ER - TY - JOUR T1 - Comet C/2012 S1 (ISON); observations of the dust grains from SOFIA and of the atomic gas from NSO Dunn and McMath-Pierce solar telescopes AN - 1703694797; 2015-074992 AB - Comet C/2012 S1 (ISON) is unique in that it is a dynamically new comet derived from the Oort cloud reservoir of comets with a sun-grazing orbit. Infrared (IR) and visible wavelength observing campaigns were planned on NASA's Stratospheric Observatory For Infrared Astronomy (SOFIA) and on National Solar Observatory Dunn (DST) and McMath-Pierce Solar Telescopes, respectively. We highlight our early results. SOFIA (+FORCAST) mid- to far-IR images and spectroscopy ( approximately 5-35 mu m) of the dust in the coma of ISON are to be obtained by the ISON-SOFIA Team during a flight window 2013 Oct 21-23 UT (r (sub h) approximately 1.18 AU). Dust characteristics, identified through the 10 mu m silicate emission feature and its strength, as well as spectral features from cometary crystalline silicates (Forsterite) at 11.05-11.2 mu m, and near 16, 19, 23.5, 27.5, and 33 mu m are compared with other Oort cloud comets that span the range of small and/or highly porous grains (e.g., C/1995 O1 (Hale-Bopp) and C/2001 Q4 (NEAT)) to large and/or compact grains (e.g., C/2007 N4 (Lulin) and C/2006 P1 (McNaught)). Measurement of the crystalline peaks in contrast to the broad 10 and 20 mu m amorphous silicate features yields the cometary silicate crystalline mass fraction, which is a benchmark for radial transport in our protoplanetary disk. The central wavelength positions, relative intensities, and feature asymmetries for the crystalline peaks may constrain the shapes of the crystals. Only SOFIA can look for cometary organics in the 5-8 mu m region. Spatially resolved measurements of atoms and simple molecules from when comet ISON is near the Sun (r (sub h) < 0.4 AU, near Nov-20--Dec-03 UT) were proposed for by the ISON-DST Team. Comet ISON is the first comet since comet Ikeya-Seki (1965f) suitable for studying the alkalai metals Na and K and the atoms specifically attributed to dust grains including Mg, Si, Fe, as well as Ca. DST's Horizontal Grating Spectrometer (HGS) measures 4 settings: Na I, K, C2 to sample cometary organics (along with Mg I), and [O I] as a proxy for activity from water (along with Si I and Fe I). State-of-the-art instruments that will also be employed include IBIS, which is a Fabry-Perot spectral imaging system that concurrently measures lines of Na, K, Ca II, or Fe, and ROSA (CSUN/QUB), which is a rapid imager that simultaneously monitors Ca II or CN. From McMath-Pierce, the Solar-Stellar Spectrograph also will target ISON (320-900 nm, R approximately 21,000, r (sub h) <0.3 AU). Assuming survival, the intent is to target ISON over r (sub h) <0.4 AU, characteristic of prior Na detections. JF - American Geophysical Union Fall Meeting AU - Wooden, D H AU - Woodward, C E AU - Harker, D E AU - Kelley, M S AU - Sitko, M AU - Reach, W T AU - de Pater, I AU - Gehrz, R D AU - Kolokolova, L AU - Cochran, A L AU - McKay, A J AU - Reardon, K AU - Cauzzi, G AU - Tozzi, G AU - Christian, D J AU - Jess, D B AU - Mathioudakis, M AU - Lisse, C M AU - Morgenthaler, J P AU - Knight, M M AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P24A EP - 07 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703694797?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Comet+C%2F2012+S1+%28ISON%29%3B+observations+of+the+dust+grains+from+SOFIA+and+of+the+atomic+gas+from+NSO+Dunn+and+McMath-Pierce+solar+telescopes&rft.au=Wooden%2C+D+H%3BWoodward%2C+C+E%3BHarker%2C+D+E%3BKelley%2C+M+S%3BSitko%2C+M%3BReach%2C+W+T%3Bde+Pater%2C+I%3BGehrz%2C+R+D%3BKolokolova%2C+L%3BCochran%2C+A+L%3BMcKay%2C+A+J%3BReardon%2C+K%3BCauzzi%2C+G%3BTozzi%2C+G%3BChristian%2C+D+J%3BJess%2C+D+B%3BMathioudakis%2C+M%3BLisse%2C+C+M%3BMorgenthaler%2C+J+P%3BKnight%2C+M+M%3BAnonymous&rft.aulast=Wooden&rft.aufirst=D&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-08-13 N1 - CODEN - #07548 ER - TY - JOUR T1 - Radiolytic cryovolcanism revisited AN - 1703694687; 2015-075075 AB - Active geysers of water vapor and ice grains from the south pole of Enceladus are not yet definitively explained in terms of energy sources and processes. Other instances of hot (Io) and cold (Mars, Triton) volcanism beyond Earth are known if not fully understood. We revisit, in comparison to other models, the "Old Faithful" theory of radiolytic gas-driven cryovolcanism first proposed by Cooper et al. [Plan. Sp. Sci. 2009]. In the energetic electron irradiation environment of Enceladus within Saturn's magnetosphere, a 10-percent duty cycle could be maintained for current geyser activity driven by gases from oxidation of ammonia to N2 and methane to CO2 in the thermal margins of a south polar sea. Much shorter duty cycles down to 0.01 percent would be required to account for thermal power output up to 16 GW, Steady accumulation of oxidant energy over four billion years could have powered all Enceladus emissions over the past four hundred thousand to four hundred million years. There could be separate energy sources driving mass flow and thermal emission over vastly different time scales. Since episodic tidal dissipation on 10 Myr time scales at 0.1-1 Gyr intervals [O'Neill and Nimmo, Nature 2010], and thus duty cycles 1-10 percent, could heat the polar sea to the current level, the radiolytic energy source could easily power and modulate the geyser mass flow on million-year time scales. Maximum thermal emission temperature 223 K [Abramov and Spencer, Icarus 2009] hints at thermal buffering in the basal and vent wall layers by a 1:1 H2O:H2O2 radiolytic eutectic, assuming deep ice crust saturation with H2O2 from long cumulative surface irradiation and downward ice convection. Due to density stratification the peroxide eutectic and salt water layers could separate, so that the denser peroxide layer (1.2 g/cc) descends to the polar sea while the lighter salt water (1.05 g/cc) rises along separate channels. Methane reservoirs could be found dissolved into the polar sea, or else trapped in hydrates [Kieffer et al., Science 2006] along flow paths and at the walls of the polar sea at surface depths below 20 km [Fortes, Icarus 2007]. Driver gas production for cryovolcanism could occur wherever these two layers come into contact under requisite temperature and pressure conditions, e.g. from 220 K and 10 bar at the 10-km basal layer of the overlying ice crust to 647 K and 220 bars at the liquid water limit, above the core-mantle boundary at 460 bars [Fortes, Icarus 2007]. We expect H2O2 oxidation to ignite at high temperatures but metallic minerals could catalyze reactions at lower temperatures nearer the basal layer. Pressure effects on oxidation rates are uncertain. Definitive modeling of Enceladus cryovolcanism likely involves synthesis of key processes from multiple models: Cold Faithful [Porco et al., Science 2006], Frigid Faithful [Keiffer et al., Science 2006], Frothy Faithful [Fortes, Icarus 2007], Old Faithful, and "Perrier Ocean" recirculation [Matson et al., Icarus 2012]. JF - American Geophysical Union Fall Meeting AU - Cooper, John F AU - Cooper, P D AU - Sittler, Edward C AU - Wesenberg, R P AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P53B EP - 1855 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703694687?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Radiolytic+cryovolcanism+revisited&rft.au=Cooper%2C+John+F%3BCooper%2C+P+D%3BSittler%2C+Edward+C%3BWesenberg%2C+R+P%3BAnonymous&rft.aulast=Cooper&rft.aufirst=John&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-08-13 N1 - CODEN - #07548 ER - TY - JOUR T1 - Change in the (super 40) Ar/N of the Mars Atmosphere from Viking to MSL; a possible indication of climate change on Mars AN - 1703694651; 2015-075008 AB - Compositional measurements of the Mars atmosphere conducted by the Sample Analysis at Mars (SAM) suite on Mars Science Laboratory (MSL) have included precise measurements of Argon and N (sub 2) . As first reported in Mahaffy et al. (Science, 341:263, 2013), and supported by repeated measurements over the course of the first Earth year of the mission, the (super 40) Ar/N ratio measured by SAM is approximately 0.5 - a significantly higher ratio than measured by Viking ( approximately 0.33) in the 1970s. Given the expected stability of both Ar and N (sub 2) in the Mars atmosphere, the apparent change in their ratio is a surprising result. We will show the Mars data from the SAM Quadrupole Mass Spectrometer (QMS), with a focus on the analysis and ground calibration that yield the current (super 40) Ar/N ratio. We will show the robustness of this ratio against the changing environmental conditions in Gale Crater, such as season, pressure, and CO (sub 2) mixing ratio. Measurements of the (super 15) N/ (super 14) N of N (sub 2) have been made, concurrently with the (super 40) Ar/N and in separate enrichment experiments, and these will also be presented to allow for comparisons to the meteorite mixing line (eg. Becker and Pepin, EPSL, 69:225, 1984). Finally, we will explore possible mechanisms by which a significant change in (super 40) Ar/N over approximately 30 years may be reconciled, with implications for the dynamism of the Mars atmosphere and exchange of gases with the regolith. JF - American Geophysical Union Fall Meeting AU - Trainer, Melissa G AU - McKay, C P AU - Franz, Heather B AU - Wong, Mike H AU - Mahaffy, Paul R AU - Atreya, S K AU - Manning, H L AU - Conrad, Pamela G AU - Brunner, Anna E AU - Malespin, Charles A AU - Owen, T C AU - Pepin, R O AU - Navarro-Gonzalez, R AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P31C EP - 03 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703694651?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Change+in+the+%28super+40%29+Ar%2FN+of+the+Mars+Atmosphere+from+Viking+to+MSL%3B+a+possible+indication+of+climate+change+on+Mars&rft.au=Trainer%2C+Melissa+G%3BMcKay%2C+C+P%3BFranz%2C+Heather+B%3BWong%2C+Mike+H%3BMahaffy%2C+Paul+R%3BAtreya%2C+S+K%3BManning%2C+H+L%3BConrad%2C+Pamela+G%3BBrunner%2C+Anna+E%3BMalespin%2C+Charles+A%3BOwen%2C+T+C%3BPepin%2C+R+O%3BNavarro-Gonzalez%2C+R%3BAnonymous&rft.aulast=Trainer&rft.aufirst=Melissa&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-08-13 N1 - CODEN - #07548 ER - TY - JOUR T1 - Constraining cometary crystal shapes from Ir spectral features AN - 1703694595; 2015-074995 AB - A major challenge in deriving the silicate mineralogy of comets is ascertaining how the anisotropic nature of forsterite crystals affects the spectral features' wavelength, relative intensity, and asymmetry. Forsterite features are identified in cometary comae near 10, 11.05-11.2, 16, 19, 23.5, 27.5 and 33 mu m, so accurate models for forsterite's absorption efficiency (Qabs) are a primary requirement to compute IR spectral energy distributions (SEDs, lambda Flambda vs. lambda ) and constrain the silicate mineralogy of comets. Forsterite is an anisotropic crystal, with three crystallographic axes with distinct indices of refraction for the a-, b-, and c-axis. The shape of a forsterite crystal significantly affects its spectral features . We need models that account for crystal shape. The IR absorption efficiencies of forsterite are computed using the discrete dipole approximation (DDA) code DDSCAT. Starting from a fiducial crystal shape of a cube, we systematically elongate/reduce one of the crystallographic axes. Also, we elongate/reduce one axis while the lengths of the other two axes are slightly asymmetric (0.8:1.2). The most significant grain shape characteristic that affects the crystalline spectral features is the relative lengths of the crystallographic axes. The second significant grain shape characteristic is breaking the symmetry of all three axes. Synthetic spectral energy distributions using seven crystal shape classes are fit to the observed SED of comet C/1995 O1 (Hale-Bopp). The Hale-Bopp crystalline residual better matches equant, b-platelets, c-platelets, and b-columns spectral shape classes, while a-platelets, a-columns and c-columns worsen the spectral fits. Forsterite condensation and partial evaporation experiments demonstrate that environmental temperature and grain shape are connected. Thus, grain shape is a potential probe for protoplanetary disk temperatures where the cometary crystalline forsterite formed. The forsterite crystal shapes (equant, b-platelets, c-platelets, b-colums - excluding a- and c-columns) derived from our modeling of comet Hale-Bopp, compared to laboratory synthesis experiments, suggests that these crystals are high temperature condensates. By observing and modeling the crystalline features in comet ISON, we may constrain forsterite crystal shape(s) and link to their formation temperature(s) and environment(s). JF - American Geophysical Union Fall Meeting AU - Wooden, D H AU - Lindsay, S AU - Harker, D E AU - Kelley, M S AU - Woodward, C E AU - Murphy, J R AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P31A EP - 1782 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703694595?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Constraining+cometary+crystal+shapes+from+Ir+spectral+features&rft.au=Wooden%2C+D+H%3BLindsay%2C+S%3BHarker%2C+D+E%3BKelley%2C+M+S%3BWoodward%2C+C+E%3BMurphy%2C+J+R%3BAnonymous&rft.aulast=Wooden&rft.aufirst=D&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-08-13 N1 - CODEN - #07548 ER - TY - JOUR T1 - Enceladus' enigmatic heat flow AN - 1703694574; 2015-075097 AB - Accurate knowledge of Enceladus' heat flow is important because it provides a vital constraint on Enceladus' tidal dissipation mechanisms, orbital evolution, and the physical processes that generate the plumes. In 2011 we published an estimate of the current heat flow from Enceladus' active south polar terrain: 15.8+ or -3.1 GW (Howett et al., 2011). This value was calculated by first estimating by modeling, and then removing, the passive component from 17 to 1000 micron observations made of the entire south polar terrain by Cassini's Composite Infrared Spectrometer (CIRS). The heat flow was then directly calculated from the residual, assumed endogenic, component. The derived heat flow of 15.8 GW was surprisingly high, about 10 times greater than that predicted by steady-state tidal heating (Meyer and Wisdom, 2007). CIRS has also returned high spatial resolution observations of Enceladus' active south polar terrain. Two separate observations are used: 9 to 16 micron observations taken over nearly the complete south polar terrain and a single 17 to 1000 micron scan over Damascus, Baghdad and Cairo. The shorter wavelength observations are only sensitive to high temperature emission (>70 K), and so longer wavelength observations are required (despite their limited spatial coverage) to estimate the low temperature emission from the stripes. Analysis of these higher resolution observations tells a different story of Enceladus' endogenic heat flow: the preliminary estimate of the heat flow from the active tiger stripes using these observations is 4.2 GW. An additional 0.5 GW must be added to this number to account for the latent heat release by the plumes (Ingersoll and Pankine 2009), giving a total preliminary estimate of 4.9 GW. The discrepancy in these two numbers is significant and we are currently investigating the cause. One possible reason is that there is significantly higher endogenic emission from the regions between the tiger stripes than we currently estimate (based on the comparison of the single long-wavelength scan across the fractures). It is also possible that the earlier modeling efforts underestimated Enceladus' passive emission, resulting in an overestimation of Enceladus' heat flow. JF - American Geophysical Union Fall Meeting AU - Howett, C AU - Spencer, J R AU - Spencer, Daniel AU - Verbiscer, A AU - Hurford, Terry A AU - Segura, Marcia E AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P53E EP - 06 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703694574?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Enceladus%27+enigmatic+heat+flow&rft.au=Howett%2C+C%3BSpencer%2C+J+R%3BSpencer%2C+Daniel%3BVerbiscer%2C+A%3BHurford%2C+Terry+A%3BSegura%2C+Marcia+E%3BAnonymous&rft.aulast=Howett&rft.aufirst=C&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-08-13 N1 - CODEN - #07548 ER - TY - JOUR T1 - Antarctic analog for diurnal tidal motions along fractures on Enceladus AN - 1703694528; 2015-075085 AB - Recent CASSINI VIMS observations have revealed a diurnal variation in the brightness of plume observations from Enceladus. The plume brightness varies by a factor of four as Enceladus orbits Saturn. The plume brightens dramatically as Enceladus approaches its orbital apocenter, and is dimmer near pericenter. The brightness is linked to the amount of material being erupted from the Tiger Stripe fractures in Enceladus' south polar region. The observation of variations in plume brightness (or eruptive output) supports a theoretical model of diurnal tidal stress controlling the location and timing of eruptions from these fractures. Diurnal tidal stress will cyclically place these fractures under tension and compression, which may cause the Tiger Stripes to open and close daily. If conduits to subsurface volatile reservoirs were established while fractures are in tension, the tidally-controlled fault motion would dictate the eruptive output. This tidal stress model predicts that the Tiger Stripes would experience more tensile stresses near apocenter, thus facilitating more eruptive activity at that time. Tidal stress calculations are based on the tidal flexing expected to occur on Enceladus; surface deformation in response to tidal stresses can only be inferred. The predicted fault motions are small and are not currently observable. However, an Earth analog from the Ross Ice Shelf, Antarctica, may provide insight for the process of induced diurnal tidal motions. Rifts on Antarctic ice shelves are tensile fractures in the floating ice shelf. While the rifts on the Ross Ice Shelf exhibit secular dilation, which causes them to widen with time, data of their motion also show a distinctly diurnal signal. The Ross Ice Shelf experiences tidal forces from both the Moon and Sun, and these forces induce small tidal motions on rifts in the ice shelf. GPS data show small, diurnal tidal motions that dilate and constrict the rift daily. From this analog we conclude that the diurnal tidal motion model for Enceladus may be credible. JF - American Geophysical Union Fall Meeting AU - Hurford, Terry A AU - Brunt, K M AU - Rhoden, Alyssa AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P53B EP - 1866 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703694528?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Antarctic+analog+for+diurnal+tidal+motions+along+fractures+on+Enceladus&rft.au=Hurford%2C+Terry+A%3BBrunt%2C+K+M%3BRhoden%2C+Alyssa%3BAnonymous&rft.aulast=Hurford&rft.aufirst=Terry&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-08-13 N1 - CODEN - #07548 ER - TY - JOUR T1 - Mars; a planet with a dynamic climate system AN - 1703694527; 2015-075007 AB - Mars is a well-observed planet. Since the 1960s orbiters, landers, rovers, and earth-based telescopic observations show that its climate system is dynamic. Its dynamic nature, largely the result of atmosphere-surface interactions, is most obvious in the seasonal cycles of dust, water, and carbon dioxide that define the planet's climate system. These cycles are linked through the global circulation and MGS, Odyssey, Phoenix, MER, Mars Express, MRO, and now MSL have continuously observed them at Mars for the past 16 years. Their observations show that while the seasonal cycles are largely annually repeatable, there are interannual variations. Planet-encircling dust storms, for example, are quasi-triennial and originate over a broader range of seasons and locations than previously thought. Water moves from pole-to-pole each year in a largely, but not precisely, repeatable pattern that suggests but does not demand non-polar surface reservoirs. And the seasonal CO2 polar caps grow and retreat in a very predictable way with only minor deviations from year-to-year in spite of significant differences in atmospheric dust content. These behaviors suggest a complicated but robust coupled system in which these cycles interact to produce the greatest interannual variability in the dust cycle and least variability in the CO2 cycle. The nature of these interactions is the subject of ongoing research, but clouds, both water ice and CO2 ice, now appear to play a bigger role than believed at the end of the 20th century. There may also be some long-term trends in these cycles as there is evidence from imaging data, for example, that the south polar residual cap may not be stable on decadal to centennial time scales. On even longer time scales, the discovery of as much as 5 mb global equivalent of buried CO2 ice near the south pole, the detection of vast quantities of subsurface water ice at very shallow depths in midlatitudes of both hemispheres, and the presence of remnant glacial features at almost all latitudes, strongly suggests the possibility of significant climate change associated with orbital variations. Some of the major questions these data raise concern how closed the seasonal cycles are and which reservoirs are gaining or loosing, the cause of the large interannual variability of the dust cycle and how it couples to the water and CO2 cycles, and the mechanisms for the origin of past glacial activity and the emplacement and removal of subsurface ice. While many of these questions can be addressed with continued research based on existing data, new observations focused on atmosphere surface-interactions would provide valuable constraints on how dust, water, and CO2 move between the surface and atmosphere. JF - American Geophysical Union Fall Meeting AU - Haberle, R M AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P31C EP - 01 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703694527?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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%3B+a+planet+with+a+dynamic+climate+system&rft.au=Haberle%2C+R+M%3BAnonymous&rft.aulast=Haberle&rft.aufirst=R&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-08-13 N1 - CODEN - #07548 ER - TY - JOUR T1 - Terrestrial analog field investigations to enable science and exploration studies of impacts and volcanism on the Moon, NEAs, and moons of Mars AN - 1703694489; 2015-075120 AB - Terrestrial analog studies are a critical component for furthering our understanding of geologic processes on the Moon, near-Earth asteroids (NEAs), and the moons of Mars. Carefully chosen analog sites provide a unique natural laboratory with high relevance to the associated science on these solar system target bodies. Volcanism and impact cratering are fundamental processes on the Moon, NEAs, and Phobos and Deimos. The terrestrial volcanic and impact records remain invaluable for our understanding of these processes throughout our solar system, since these are our primary source of firsthand knowledge on volcanic landform formation and modification as well as the three-dimensional structural and lithological character of impact craters. Regarding impact cratering, terrestrial fieldwork can help us to understand the origin and emplacement of impactites, the history of impact bombardment in the inner Solar System, the formation of complex impact craters, and the effects of shock on planetary materials. Volcanism is another dominant geologic process that has significantly shaped the surface of planetary bodies and many asteroids. Through terrestrial field investigations we can study the processes, geomorphic features and rock types related to fissure eruptions, volcanic constructs, lava tubes, flows and pyroclastic deposits. Also, terrestrial analog studies have the advantage of enabling simultaneous robotic and/or human exploration testing in a low cost, low risk, high fidelity environment to test technologies and concepts of operations for future missions to the target bodies. Of particular interest is the importance and role of robotic precursor missions prior to human operations for which there is little to no actual mission experience to draw upon. Also critical to understanding new worlds is sample return, and analog studies enable us to develop the appropriate procedures for collecting samples in a manner that will best achieve the science objectives. JF - American Geophysical Union Fall Meeting AU - Heldmann, Jennifer L AU - Colaprete, Anthony AU - Cohen, Barbara A AU - Elphic, Richard C AU - Garry, W B AU - Hodges, K V AU - Hughes, S S AU - Kim, K J AU - Lim, Darlene AU - McKay, C P AU - Osinski, G R AU - Petro, Noah E AU - Sears, Derek W AU - Squyres, S W AU - Tornabene, L L AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P54B EP - 01 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703694489?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Terrestrial+analog+field+investigations+to+enable+science+and+exploration+studies+of+impacts+and+volcanism+on+the+Moon%2C+NEAs%2C+and+moons+of+Mars&rft.au=Heldmann%2C+Jennifer+L%3BColaprete%2C+Anthony%3BCohen%2C+Barbara+A%3BElphic%2C+Richard+C%3BGarry%2C+W+B%3BHodges%2C+K+V%3BHughes%2C+S+S%3BKim%2C+K+J%3BLim%2C+Darlene%3BMcKay%2C+C+P%3BOsinski%2C+G+R%3BPetro%2C+Noah+E%3BSears%2C+Derek+W%3BSquyres%2C+S+W%3BTornabene%2C+L+L%3BAnonymous&rft.aulast=Heldmann&rft.aufirst=Jennifer&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-08-13 N1 - CODEN - #07548 ER - TY - JOUR T1 - First results from NASA's Lunar Atmosphere and Dust Environment Explorer (LADEE) AN - 1703693769; 2015-075110 AB - As of early August, 2013, the Lunar Atmosphere and Dust Environment Explorer (LADEE) mission is scheduled for launch on a Minotaur V rocket from Wallops Flight Facility during a five-day launch period that opens on Sept. 6, 2013 (early Sept. 7 UTC). LADEE will address 40 year-old mysteries of the lunar atmosphere and the question of levitated lunar dust. It will also pioneer the next generation of optical space communications. LADEE will assess the composition of the lunar atmosphere and investigate the processes that control its distribution and variability, including sources, sinks, and surface interactions. LADEE will also determine whether dust is present in the lunar exosphere, and reveal its sources and variability. These investigations are relevant to our understanding of surface boundary exospheres and dust processes occurring at many objects throughout the solar system, address questions regarding the origin and evolution of lunar volatiles, and have potential implications for future exploration activities. Following a successful launch, LADEE will enter a series of phasing orbits, which allows the spacecraft to arrive at the Moon at the proper time and phase. This approach accommodates any dispersion in the Minotaur V launch injection. LADEE's arrival at the moon depends on the launch date, but with the Sept. 6 launch date it should arrive at the Moon in early October. The spacecraft will approach the moon from its leading edge, travel behind the Moon out of sight of the Earth, and then re-emerge and execute a three-minute Lunar Orbit Insertion maneuver. This will place LADEE in an elliptical retrograde equatorial orbit with an orbital period of approximately 24 hours. A series of maneuvers is then performed to reduce the orbit to become nearly circular with a 156-mile (250-kilometer) altitude. Spacecraft checkout and science instrument commissioning will commence in early-October and will nominally span 30 days but can be extended for an additional 30 days in the event of contingencies. Following commissioning, the 100-day Science Phase is performed at an orbit with periapsis between 20-60 km. This orbit must be constantly managed due to the Moon's highly inhomogeneous gravity field. During the Science Phase, the moon will rotate more than three times underneath the LADEE orbit. LADEE employs a high heritage instrument payload: a Neutral Mass Spectrometer (NMS) from Goddard Space Flight Center, an Ultraviolet/Visible Spectrometer (UVS) from Ames Research Center, and a dust detection experiment (LDEX) from the University of Colorado/LASP. It will also carry the Lunar Laser Communications Demonstration (LLCD) as a technology demonstration. The LLCD is funded by the Human Exploration Operations Mission Directorate (HEOMD), managed by GSFC, and built by the MIT Lincoln Lab. Contingent upon LADEE's successful lunar orbit insertion and checkout, we will report the early results from the science investigations. JF - American Geophysical Union Fall Meeting AU - Elphic, Richard C AU - Colaprete, Anthony AU - Horanyi, M AU - Mahaffy, Paul R AU - Delory, G T AU - Noble, Sarah K AU - Boroson, D AU - Hine, Butler P AU - Salute, Joan S AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P53F EP - 10 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703693769?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+results+from+NASA%27s+Lunar+Atmosphere+and+Dust+Environment+Explorer+%28LADEE%29&rft.au=Elphic%2C+Richard+C%3BColaprete%2C+Anthony%3BHoranyi%2C+M%3BMahaffy%2C+Paul+R%3BDelory%2C+G+T%3BNoble%2C+Sarah+K%3BBoroson%2C+D%3BHine%2C+Butler+P%3BSalute%2C+Joan+S%3BAnonymous&rft.aulast=Elphic&rft.aufirst=Richard&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-08-13 N1 - CODEN - #07548 ER - TY - JOUR T1 - Venus, Earth, Xenon AN - 1703693741; 2015-075024 AB - Xenon has been regarded as an important goal of many proposed missions to Venus. This talk is intended to explain why. Despite its being the heaviest gas found in natural planetary atmospheres, there is more evidence that Xe escaped from Earth than for any element apart from helium: (i) Atmospheric Xe is very strongly mass fractionated (at about 4% per amu) from any known solar system source. This suggests fractionating escape that preferentially left the heavy Xe isotopes behind. (ii) Xe is underabundant compared to Kr, a lighter noble gas that is not strongly mass fractionated in air. (iii) Radiogenic Xe is strongly depleted by factors of several to approximately 100 compared to the quantities expected from radioactive decay of primordial solar system materials. In these respects Xe on Mars is similar to Xe on Earth, but with one key difference: Xe on Mars is readily explained by a simple process like hydrodynamic escape that acts on an initially solar or meteoritic Xe. This is not so for Earth. Earth's Xe cannot be derived by an uncontrived mass fractionating process acting on any known type of Solar System Xe. Earth is a stranger, made from different stuff than any known meteorite or Mars or even the Sun. Who else is in Earth's family? Comets? We know nothing. Father Zeus? Data from Jupiter are good enough to show that jovian Xe is not strongly mass-fractionated but not good enough to determine whether Jupiter resembles the Earth or the Sun. Sister Venus? Noble gas data from Venus are incomplete, with Kr uncertain and Xe unmeasured. Krypton was measured by several instruments on several spacecraft. The reported Kr abundances are discrepant and were once highly controversial. These discrepancies appear to have been not so much resolved as forgotten. Xenon was not detected on Venus. Upper limits were reported for the two most abundant xenon isotopes 129Xe and 132Xe. From the limited data it is not possible to tell whether Venus's affinities lie with the solar wind, or with the chondrites, with Earth, or with none of the above. Modern spacecraft mass spectrometers are at least 100-fold more sensitive to noble gases. Sending such an instrument to Venus may be the last best hope for decrypting what Earth's noble gases have been trying to tell us. JF - American Geophysical Union Fall Meeting AU - Zahnle, K J AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P34A EP - 06 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703693741?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Venus%2C+Earth%2C+Xenon&rft.au=Zahnle%2C+K+J%3BAnonymous&rft.aulast=Zahnle&rft.aufirst=K&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-08-13 N1 - CODEN - #07548 ER - TY - JOUR T1 - The distribution of ice in lunar permanently shadowed regions; science enabling exploration AN - 1703693295; 2015-075107 AB - Recent prospecting indicates that water ice occurs in enhanced abundances in some lunar PSRs. That water constitutes a resource that enables lunar exploration if it can be harvested for fuel and life support. Future lunar exploration missions will need detailed information about the distribution of volatiles in lunar permanently shadowed regions (PSRs). In addition, the volatiles also offer key insights into the recent and distant past, as they have trapped volatiles delivered to the moon over approximately 2 Gyr. This comprises an unparalleled reservoir of past inner solar system volatiles, and future scientific missions are needed to make the measurements that will reveal the composition of those volatiles. These scientific missions will necessarily have to acquire and analyze samples of volatiles from the PSRs. For both exploration and scientific purposes, the precise location of volatiles will need to be known. However, data indicate that ice is distributed heterogeneously on the Moon. It is unlikely that the distribution will be known a priori with enough spatial resolution to guarantee access to volatiles using a single point sample. Some mechanism for laterally or vertically distributed access will increase the likelihood of acquiring a rich sample of volatiles. Trade studies will need to be conducted to anticipate the necessary range and duration of missions to lunar PSRs that will be needed to accomplish the mission objectives. We examine the spatial distribution of volatiles in lunar PSRs reported from data analyses and couple those with models of smaller scale processes. FUV and laser data from PSRs that indicate the average surface distribution is consistent with low abundances on the extreme surface in most PSRs. Neutron and radar data that probe the distribution at depth show heterogeneity at broad spatial resolution. We consider those data in conjunction with the model to understand the full, 3-D nature of the heterogeneity. A Monte Carlo technique simulates the stochastic process of impact gardening on a putative ice deposit. The model uses the crater production function as a basis for generating a random selection of impact craters over time. Impacts are implemented by modifying the topography, volatile content, and depth distribution in the simulation volume on a case by case basis. This technique will never be able to reproduce the exact impact history of a particular area. But by conducting multiple runs with the same initial conditions and a different seed to the random number generator, we are able to calculate the probability of situations occurring. Further, by repeating the simulations with varied initial conditions, we calculate the dependence of the expectation values on the inputs. We present findings regarding the heterogeneity of volatiles in PSRs as a function of age, initial ice thickness, and contributions from steady sources. JF - American Geophysical Union Fall Meeting AU - Hurley, Dana AU - Elphic, Richard C AU - Bussey, Ben AU - Hibbitts, Karl AU - Lawrence, David J AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P53F EP - 06 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703693295?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+distribution+of+ice+in+lunar+permanently+shadowed+regions%3B+science+enabling+exploration&rft.au=Hurley%2C+Dana%3BElphic%2C+Richard+C%3BBussey%2C+Ben%3BHibbitts%2C+Karl%3BLawrence%2C+David+J%3BAnonymous&rft.aulast=Hurley&rft.aufirst=Dana&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-08-13 N1 - CODEN - #07548 ER - TY - JOUR T1 - Seismometers on Europa; insights from modeling and Antarctic ice shelf analogs AN - 1703693261; 2015-075111 AB - The outer satellites of the Solar System are a diverse suite of objects that span a large spectrum of sizes, compositions, and evolutionary histories; constraining their internal structures is key for understanding their formation, evolution, and dynamics. In particular, Jupiter's icy satellite Europa has compelling evidence for the existence of a global subsurface ocean beneath a surface layer of water ice. This ocean decouples the ice shell from the solid silicate mantle, and amplifies tidally driven large-scale surface deformation. The complex fissures and cracks seen by orbital flybys suggest brittle failure is an ongoing and active process in the ice crust, therefore indicating a high level of associated seismic activity. Seismic probing of the ice, oceanic, and rocky layers would provide altogether new information on the structure, evolution, and even habitability of Europa. Any future missions (penetrators, landers, and rovers) planning to take advantage of seismometers to image the Europan interior would need to be built around predictions for the expected background noise levels, seismicity, wavefields, and elastic properties of the interior. A preliminary suite of seismic velocity profiles for Europa has been calculated using moment of inertia constraints, planetary mass and density, estimates of moon composition, thermal structure, and experimentally determined relationships of elastic properties for relevant materials at pressure, temperature and depth. While the uncertainties in these models are high, they allow us to calculate a first-order seismic response using 1-D and 3-D high frequency wave propagation codes for global and regional scale structures. Here, we show how future seismic instruments could provide detailed elastic information and reduced uncertainties on the internal structure of Europa. For example, receiver functions and surface wave orbits calculated for a single seismic instrument would provide information on crustal thickness and the depth of an ocean layer. Likewise, evaluation of arrival times of reflected wave multiples observed at a single seismic station would record properties of the mantle and core of Europa. Cluster analysis of waveforms from various seismic source mechanisms could be used to classify different types of seismicity originating from the ice and rocky parts of the moon. We examine examples of single station results for analogous seismic experiments on Earth, e.g., where broadband, 3-component seismometers have been placed upon the Ross Ice Shelf of Antarctica. Ultimately this work reveals that seismometer deployments will be essential for understanding the internal dynamics, habitability, and surface evolution of Europa, and that seismic instruments need to be a key component of future missions to surface of Europa and outer satellites. JF - American Geophysical Union Fall Meeting AU - Schmerr, Nicholas C AU - Brunt, K M AU - Cammarano, F AU - Hurford, Terry A AU - Lekic, V AU - Panning, M P AU - Rhoden, Alyssa AU - Sauber, Jeanne M AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P54A EP - 01 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703693261?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Seismometers+on+Europa%3B+insights+from+modeling+and+Antarctic+ice+shelf+analogs&rft.au=Schmerr%2C+Nicholas+C%3BBrunt%2C+K+M%3BCammarano%2C+F%3BHurford%2C+Terry+A%3BLekic%2C+V%3BPanning%2C+M+P%3BRhoden%2C+Alyssa%3BSauber%2C+Jeanne+M%3BAnonymous&rft.aulast=Schmerr&rft.aufirst=Nicholas&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-08-13 N1 - CODEN - #07548 ER - TY - JOUR T1 - A radiolytic salt cycle on Europa? AN - 1703693227; 2015-075031 AB - Our recent ground based observations suggest the trailing hemisphere of Europa may have magnesium sulfate salts produced from the irradiation of endogenous chlorine salts from the subsurface ocean. Upon irradiation the endogenous magnesium combines with exogenous, Iogenic sulfur to yield the observed magnesium sulfate. The spectroscopic signature of the magnesium sulfate is seen on the trailing but not the leading hemisphere, leading to the radiolytic interpretation of the production of this compound. Coupled with this pathway, the radiolytic chemistry occurring on Europa's surface yields significant hydrogen peroxide on the leading hemisphere, but not the trailing, and modest amounts of peroxide on the sub- and anti-jovian hemispheres. Here we detail the process, pathway, and geography of our proposed radiolytic salt cycle and couple our telescope observations with recent laboratory work. JF - American Geophysical Union Fall Meeting AU - Hand, K P AU - Brown, M E AU - Carlson, R W AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P34B EP - 08 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703693227?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+radiolytic+salt+cycle+on+Europa%3F&rft.au=Hand%2C+K+P%3BBrown%2C+M+E%3BCarlson%2C+R+W%3BAnonymous&rft.aulast=Hand&rft.aufirst=K&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-08-13 N1 - CODEN - #07548 ER - TY - JOUR T1 - The oldest rocks on Venus; the importance of tessera terrain for Venus exploration AN - 1703693143; 2015-075020 AB - Venus tessera terrain is a major, yet unsampled, tectonic unit on Venus characterized by multiple sets of intersecting compressional and extensional structures. Tessera terrain is temporally, morphologically, and perhaps also compositionally unique on Venus. Stratigraphic studies of tessera terrain establish that they consistently appear locally, and perhaps even globally, as the oldest material on a planet with an average surface crater retention age of approximately 500 million years. Thus, the tesserae provide the best chance to access rocks that are derived from the first 80% of the history of the planet, an era obscured by the emplacement of voluminous (presumably basaltic) plains. Analysis of Magellan imagery, topography and gravity data show that tessera terrain is characterized by higher strain rates and a thinner lithosphere than at present and thus records an extinct geodynamical era on Venus. Yet very little is understood about the number, morphology and stratigraphy of geologic units within tessera terrain, nor mass wasting processes operating on the surface. Improved radar imagery at the 5-25 m scale, and optical images below the clouds (<1 km) and at the surface will help assess the geologic processes operating in the pre-plains era. Such data products are also essential for judicious landing site selection, since tessera meter-scale roughness will limit landing site safety and sample access. Improved topography data are required to quantify the deformation recorded by ubiquitous tesserae structures that are finer than Magellan resolution. Tessera terrain is unsampled, but recent analyses of radiance from the surface at 1 micron using instruments on Venus Express and Galileo are consistent with felsic compositions for tesserae. Silicic compositions likely require both water and a plate recycling mechanism (e.g., subduction) for formation. The high D/H ratio of the Venus atmosphere is consistent with the loss of a significant inventory of water over the history of the planet. Felsic tesserae may herald from an ancient water-rich Venus, perhaps with an ocean and potentially habitable. Further assessment of tessera composition requires more comprehensive 1 micron radiance measurements from orbital, near-surface and surface platforms and in-situ measurement of mineralogy and chemistry. Radiance data need to be supported by improved laboratory measurements of the emissivity of relevant rocks and weathering products in a Venus environment. Venus weathering experiments also support the interpretation of in situ analyses at the surface of Venus and may constrain sampling strategy. If confirmed, felsic tesserae would be critical targets for sample return due to their potential to include ancient rocks and/or minerals formed in the presence of water (e.g., zircons). In sum, the tesserae are the oldest materials exposed on the Venus surface and are the best candidates for containing ancient rocks and for comprising evolved compositions. They uniquely and critically constrain the geochemistry, geodynamics and history of water on Venus through time. JF - American Geophysical Union Fall Meeting AU - Gilmore, M S AU - Glaze, L S AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P34A EP - 01 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703693143?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+oldest+rocks+on+Venus%3B+the+importance+of+tessera+terrain+for+Venus+exploration&rft.au=Gilmore%2C+M+S%3BGlaze%2C+L+S%3BAnonymous&rft.aulast=Gilmore&rft.aufirst=M&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-08-13 N1 - CODEN - #07548 ER - TY - JOUR T1 - Preserved flora and organics in impact melt breccias; implications for capturing past life on Mars AN - 1703693123; 2015-075039 AB - At least seven impact glass-bearing deposits have been documented in the Argentine stratigraphy, each recording separate events between the Holocene and late Miocene. Detailed evidence for their origin by impact includes: planar deformation features (PDFs in quartz, feldspars, pyroxene, olivine, etc.), asymmetric isotropization (i.e., alternate-twin deformation) in plagioclase, diaplectic phases, ultra-high temperature melting (e.g., lechatelierite, molten rutile) and decomposition (e.g., baddeleyite), and quench textures around minerals, e.g., beta-crystobalite, etc. Incorporation of materials from depth indicates that this was not an airburst but a series of crater-forming impacts. Many hand samples also contain relicts of extant biota. Scanning electron microprobe (SEM) images reveal preservation of delicate forms including: striated layers between vesicular impact glass and parallel vein-like features at higher magnification. The striated patterns resemble vascular bundles of the mesophyll (ground tissue) of a plant. Identifiable parts of the plant anatomy, e.g. papillae and cell walls, contain skeletal magnetite crystals and high-temperature, i.e., phases indicating that vitreous fossilization occurred at extremely high temperatures and rapid quench rates. The morphology is generally similar to contemporary regional grasses (pampas grass) including small spherules (papilla). The intricate forms (20nm to 20mm) indicate features rapidly preserved rather than simple impressions. Reaction zones (vesiculation and quenched minerals) along the interface between the melt and entrained plants indicate rapid quenching. Compositional mapping reveals the presence of insignificant levels of carbon, but chemical analyses confirm the high silica content (> 60%). Various analytical techniques (micro-Raman, TEM/SEM, and mu ltra-L2MS) further reveal the preserved organic materials, including tetracyclic pyrrolines, essential members of the group of porphyrin species that are produced through the thermal degradation of chlorophyll with heterogeneous survival of abundant C and N. The survival and preservations of organics within hydrous pockets in rapidly quenched impact glasses may provide a new strategy for identifying biomarkers of possible early life on ancient Mars. Impact melt could encapsulate and preserve this record. It is likely that the porous nature of the target (loess), which characterizes much of the Martian surface, would ensure flash-heat preservation under highly reducing conditions. JF - American Geophysical Union Fall Meeting AU - Schultz, P H AU - Harris, R S AU - Clemett, S AU - Thomas-Keprta, K AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P34C EP - 08 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703693123?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Preserved+flora+and+organics+in+impact+melt+breccias%3B+implications+for+capturing+past+life+on+Mars&rft.au=Schultz%2C+P+H%3BHarris%2C+R+S%3BClemett%2C+S%3BThomas-Keprta%2C+K%3BAnonymous&rft.aulast=Schultz&rft.aufirst=P&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-08-13 N1 - CODEN - #07548 ER - TY - JOUR T1 - Influence of the wet chemistry on the SAM GCMS analysis AN - 1700099534; 2015-070596 AB - The SAM GC-MS instrument on the Curiosity rover allows to analyze volatile compounds from the atmosphere or volatile compounds from the Martian regolith and refractory compounds in the regolith after sample treatment using wet chemistry. One portion of the wet chemistry experiment is composed of MTBSTFA (N-methyl-N-tert-butyldimethylsilyltrifluoroacetamide) / DMF (dimethylformamide). Indeed, chemical derivatization of polar molecular compounds is achieved by the MTBSTFA silylation reaction in order to transform refractory polar compounds into a more volatile form that can be analyzed and detected by GC-MS. Results obtained on Rocknest (Leshin et al. 2013; Glavin et al. 2013) and John Klein showed the presence of MTBSTFA reaction products in the system. This means that MTBSTFA is part of the background signal under its gaseous phase and is derived from at least one of the seven MTBSTFA/DMF filled derivatization cups in SAM. Since MTBSTFA is able to react in the gaseous phase, its detection implies the possibility to have some MTBSTFA reactions with all the labile compounds possibly present in the Martian soil, in the sampling system and/or inside the SAM instrument. As such, in order to better understand the portion of products detected coming from internal reactions, we have performed several lab experiments to mimic the SAM pyrolysis and gas processing system. Specifically, we have investigated possible MTBSTFA reactions with organics at high temperatures (100 degrees C up to 600 degrees C) from the SAM trap (Tenax(Registered)) and with oxychlorine compounds present on Mars (Glavin et al. 2013). JF - American Geophysical Union Fall Meeting AU - Buch, Arnaud AU - Freissinet, Caroline AU - Szopa, Cyril AU - Glavin, Daniel P AU - Miller, K AU - Eigenbrode, Jennifer L AU - Navarro-Gonzalez, R AU - Stern, Jennifer C AU - Pinnick, Veronica T AU - Coll, P J AU - Francois, Pascaline AU - Cabane, Michel AU - Teinturier, Samuel AU - Coscia, David AU - Dworkin, Jason P AU - Summons, R E AU - Mahaffy, Paul R AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P23C EP - 1806 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700099534?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Influence+of+the+wet+chemistry+on+the+SAM+GCMS+analysis&rft.au=Buch%2C+Arnaud%3BFreissinet%2C+Caroline%3BSzopa%2C+Cyril%3BGlavin%2C+Daniel+P%3BMiller%2C+K%3BEigenbrode%2C+Jennifer+L%3BNavarro-Gonzalez%2C+R%3BStern%2C+Jennifer+C%3BPinnick%2C+Veronica+T%3BColl%2C+P+J%3BFrancois%2C+Pascaline%3BCabane%2C+Michel%3BTeinturier%2C+Samuel%3BCoscia%2C+David%3BDworkin%2C+Jason+P%3BSummons%2C+R+E%3BMahaffy%2C+Paul+R%3BAnonymous&rft.aulast=Buch&rft.aufirst=Arnaud&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-11-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - UV-IR spectra of the icy Saturnian satellites AN - 1700099503; 2015-070726 AB - Cassini's multi-instrument suite allows simultaneous observations of the icy satellites of Saturn over a wide range of wavelengths. We are currently undertaking a project to create composite UV-IR spectra (0.1-5 microns) of the moons (Mimas, Enceladus, Tethys, Dione and Rhea) using data from the Ultraviolet Imaging Spectrograph (UVIS), the Imaging Subsystem (ISS) and the Visual-Near Infrared Mapping Spectrometer (VIMS). We present preliminary results. We anticipate that these composite spectra can be used to study the surface compositions of the satellites, their photometric behaviors (important for understanding surface structure) and effects of environmental interactions. Furthermore, the broad wavelength coverage allows us to probe different depths into the icy regoliths. Different spectral regions provide unique information not only on distinct/unique absorption features but on the depth sensed. We are particularly interested in probing the nature of the UV absorber(s) on these satellites; by studying the UV-IR composite spectra of the satellites, we can begin to understand how the UV absorber and other spectral features vary from body to body and place to place on each moon--providing clues to history and evolution of these intriguing bodies. JF - American Geophysical Union Fall Meeting AU - Hendrix, A R AU - Filacchione, Gianrico AU - Schenk, P AU - Clark, R N AU - Cuzzi, Jeffrey N AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P42A EP - 05 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700099503?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=UV-IR+spectra+of+the+icy+Saturnian+satellites&rft.au=Hendrix%2C+A+R%3BFilacchione%2C+Gianrico%3BSchenk%2C+P%3BClark%2C+R+N%3BCuzzi%2C+Jeffrey+N%3BAnonymous&rft.aulast=Hendrix&rft.aufirst=A&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - The case for a deep-atmospheric in situ mission to address the highest priority decadal survey questions for Venus AN - 1700099482; 2015-070684 AB - Current understanding of Venus lags behind that for Mars, with a major disparity of information concerning noble and trace gases and the small scale surface processes needed for comparative studies of terrestrial planet evolution. Despite global surface mapping by Magellan, discoveries by Venera landers, and ongoing atmospheric observations by the Venus Express (VEx) orbiter, significant questions about Venus remain unanswered. To place Venus into its proper context with respect to Mars and Earth, it is necessary to obtain new measurements that address top issues identified in the National Research Council (NRC) Solar System Decadal Survey: (1) evolution of the atmosphere, history of climate, and evidence of past hydrologic cycles; (2) history of volatiles and sedimentary cycles; and (3) planetary surface evolution. To answer these questions, new measurements are needed. First and foremost, in situ noble gas measurements are needed to constrain solar system formation and Venus evolution. In particular, the isotopic ratios of Xe and Kr can provide unique insights into planetary accretion. Isotopic measurements of nitrogen (15N/14N) will place important constraints on atmospheric loss processes. Current knowledge of this ratio has a substantial uncertainty of + or -20%. VEx observations of hydrogen isotopes indicate the D/H ratio above the clouds is substantially greater than measured by Pioneer Venus, and varies with height. High precision measurements of the vertical distribution of the D/H isotopic ratio below the cloud layers will provide constraints on models of the climate history of water on Venus. The majority of atmospheric mass is located below the clouds. Current data suggest intense interaction among atmospheric gases down to the surface. The haze within the cloud region of unknown composition plays a central role in the radiative balance. Photochemically-derived species (H2SO4, OCS, CO, Sn) are subjected to thermochemical reactions below the clouds, especially within 30 km of the surface. Competing temperature-pressure dependent reactions and atmospheric circulation may cause vertical and latitudinal gradients of chemically-active trace gases (e.g., SO2, H2S, OCS, CO). Measurements of the chemical composition of the near-surface atmosphere can be used to evaluate the stability of primary and secondary minerals and can help to understand chemistry of atmosphere-surface interactions. However, concentrations of many trace species have never been measured below approximately 30 km, and multiple in situ measurements are required to evaluate chemical processes and cycles of volatiles, which can only be accomplished with deep entry probes. Current lack of understanding about Venus not only limits our understanding of evolutionary pathways Earth could experience, but also suggests that we are ill-equipped to understand the evolution of star systems with similar-sized planets. JF - American Geophysical Union Fall Meeting AU - Atreya, S K AU - Garvin, James B AU - Glaze, Lori S AU - Campbell, B A AU - Fisher, Mark E AU - Flores, Anel AU - Gilmore, M S AU - Johnson, Natasha M AU - Kiefer, W S AU - Lorenz, Ralph D AU - Mahaffy, Paul R AU - Ravine, M A AU - Webster, Chris R AU - Zolotov, M Y AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P41D EP - 1953 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700099482?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+case+for+a+deep-atmospheric+in+situ+mission+to+address+the+highest+priority+decadal+survey+questions+for+Venus&rft.au=Atreya%2C+S+K%3BGarvin%2C+James+B%3BGlaze%2C+Lori+S%3BCampbell%2C+B+A%3BFisher%2C+Mark+E%3BFlores%2C+Anel%3BGilmore%2C+M+S%3BJohnson%2C+Natasha+M%3BKiefer%2C+W+S%3BLorenz%2C+Ralph+D%3BMahaffy%2C+Paul+R%3BRavine%2C+M+A%3BWebster%2C+Chris+R%3BZolotov%2C+M+Y%3BAnonymous&rft.aulast=Atreya&rft.aufirst=S&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Tracking the depleted mantle signature in melt inclusions and host glass of basaltic Martian shergottites using secondary ionization mass spectrometry AN - 1700099446; 2015-070643 AB - Trace element abundances of depleted shergottite magmas recorded by olivine-hosted melt inclusions (MI) and interstitial mesostasis glass were measured using the CAMECA ims-1270 ion microprobe. Two meteorites: Tissint, an olivine-phyric basaltic shergottite which fell over Morocco July 18th 2001; and the Antarctic meteorite Yamato 980459 (Y98), an olivine-phyric basaltic shergottite with abundant glassy mesostasis have been studied. Chondrite-normalized REE patterns for MI in Tissint and Y98 are characteristically LREE depleted and, within analytical uncertainty, parallel those of their respective whole rock composition; supporting each meteorite to represent a melt composition that has experienced closed-system crystallization. REE profiles for mesostasis glass in Y98 lie about an order of magnitude higher than those from the MI; with REE profiles for Tissint MI falling in between. Y98 MI have the highest average Sm/Nd and Y/Ce ratios, reflecting their LREE depletion and further supporting Y98 as one of our best samples to probe the depleted shergotitte mantle. In general, Zr/Nb ratios overlap between Y98 and Tissint MI, Ce/Nb ratios overlap between Y98 MI and mesostasis glass, and Sm/Nd ratios overlap between Y98 mesostasis glass and Tissint MI. These features support similar sources for both, but with subtle geochemical differences that may reflect different melting conditions or fractionation paths during ascent from the mantle. Interestingly, the REE patterns for all analyses in Y98 and possibly for those from Tissint as well display a flattening of the LREE that suggests an early crustal contribution to the shergottite mantle. JF - American Geophysical Union Fall Meeting AU - Peters, T J AU - Simon, J I AU - Jones, J H AU - Usui, T AU - Economos, R C AU - Schmitt, A K AU - McKeegan, K D AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P23F EP - 1863 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700099446?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Tracking+the+depleted+mantle+signature+in+melt+inclusions+and+host+glass+of+basaltic+Martian+shergottites+using+secondary+ionization+mass+spectrometry&rft.au=Peters%2C+T+J%3BSimon%2C+J+I%3BJones%2C+J+H%3BUsui%2C+T%3BEconomos%2C+R+C%3BSchmitt%2C+A+K%3BMcKeegan%2C+K+D%3BAnonymous&rft.aulast=Peters&rft.aufirst=T&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Radar subsurface exploration of icy moons; understanding radar wave propagation through Europa, Ganymede and Callisto AN - 1700099434; 2015-070695 AB - Orbital low frequency ice penetrating radars are proposed as a unique tool to probe the first 10 km of the subsurface icy crust of the Jovian satellites, Europa, Ganymede and Callisto. The main objective of our study is to characterize the radar response to the potential presence of aquifers, global ocean and ice tectonic structural elements associated to the moons thermal evolution. We performed a parametric detectability study of the above-mentioned features using the Finite Difference Time Domain (FDTD) method. The forward propagation were performed for a central frequency of 9 MHz, as suggested for future sounding experiments. Simulations were performed for several geoelectrical models that in turn represent different geological hypothesis of Europa, Ganymede and Callisto. We investigated the radar detectability and identification of three main subsurface features: brine aquifers, brittle-ductile interfaces and shallow faults. For each of them we studied the effect of their structural and dielectric properties on their identification considering different geological and geophysical scenarios. In particular we studied the effect of surface clutter and volume scattering on the detectability of the above-mentioned features. The amplitude and losses of the backscattered electromagnetic field of the incident radar pulse were evaluated as a function of the radar range time. Our simulations suggest that aquifer detectability is compromised by its depth, ice impurities content and by the surface and volume scattering. Aquifers are detectable between 7 and 25 dB above the 65 dB galactic noise level at depths ranging respectively from 4 to 2 km. Beyond 4 km of depth and considering the validity of the topographic and dielectric parameters used in our modeling, aquifers could be more challenging for a non ambiguous detection. For the brittle-ductile interface our simulation results suggests that it is identifiable between 2 and 3 km even under highly fractured subsurface conditions. Additionally the depth variation of the brittle ductile interface can be assessed from radar sounding. On contrary, detectability of faults on Ganymede is highly dependent on the dielectric properties of their inner fill materials that is yet to be characterized by our ongoing laboratory characterization of icy moon analog materials. JF - American Geophysical Union Fall Meeting AU - Heggy, Essam AU - Scabbia, Giovanni AU - Pappalardo, Robert T AU - Bruzzone, Lorenzo AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P41E EP - 1966 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700099434?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+subsurface+exploration+of+icy+moons%3B+understanding+radar+wave+propagation+through+Europa%2C+Ganymede+and+Callisto&rft.au=Heggy%2C+Essam%3BScabbia%2C+Giovanni%3BPappalardo%2C+Robert+T%3BBruzzone%2C+Lorenzo%3BAnonymous&rft.aulast=Heggy&rft.aufirst=Essam&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Vertical profiles of aerosol particle sizes from Mars climate sounder observations AN - 1700099349; 2015-070676 AB - Vertical variations in aerosol particle sizes often have a dramatic impact on the state and evolution of the Martian atmosphere. Recent analyses of data from the Spectroscopy for the Investigation of the Characteristics of the Atmosphere of Mars (SPICAM), the Thermal Emission Spectrometer (TES), and the Mars Climate Sounder (MCS) instruments offer some long overdue progress in constraining this aspect of aerosols. However, significantly more work remains to be done in order to better constrain and inform modern dynamical simulations of the Martian atmosphere. Thus, the primary goal of this work is to perform retrievals of particle size as a function of altitude for both dust and water ice aerosols using MCS. The MCS dataset with pole-to-pole coverage over a period of approximately 3.5 martian years, provides the crucial systematic temporal and spatial sampling. We will present a summary of our limb radiative transfer algorithms and retrieval schemes and the initial results of the application of our particle size retrieval scheme for dust and water ice. JF - American Geophysical Union Fall Meeting AU - Benson, Jennifer L AU - Wolff, M J AU - Smith, Michael D AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P41C EP - 1938 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700099349?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Vertical+profiles+of+aerosol+particle+sizes+from+Mars+climate+sounder+observations&rft.au=Benson%2C+Jennifer+L%3BWolff%2C+M+J%3BSmith%2C+Michael+D%3BAnonymous&rft.aulast=Benson&rft.aufirst=Jennifer&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Analogue experiments identify possible precursor compounds for chlorohydrocarbons detected in SAM AN - 1700099322; 2015-070575 AB - Since landing at Gale Crater on August 6, 2012, the Sample Analysis at Mars (SAM) instrument suite, aboard the Curiosity Rover, has conducted multiple analyses of scooped and drilled samples and has identified a suite of chlorohydrocarbons including chloromethane, dichloromethane, trichloromethane, chloromethylpropene, and chlorobenzene (Glavin et al., 2013; Leshin et al., 2013). These compounds were identified after samples were pyrolysed at temperatures up to approximately 835 degrees C through a combination of Evolved Gas Analysis (EGA) and Gas Chromatography Mass Spectrometry (GCMS). Since these chlorinated species were well above the background levels determined by empty cup blanks analyzed prior to solid sample analyses, thermal degradation of oxychlorine phases, such as perchlorate, present in the Martian soil, are the most likely source of chlorine needed to generate these chlorohydrocarbons. Laboratory analogue experiments show that terrestrial organics internal to SAM, such as N-methyl-N(tert-butyldimethylsilyl)trifluoroacetamide (MTBSTFA), a derivatization agent, can react with perchlorates to produce all of the chlorohydrocarbons detected by SAM. However, in pyrolysis-trap-GCMS laboratory experiments with MTBSTFA, C4 compounds are the predominant chlorohydrocarbon observed, whereas on SAM the C1 chlorohydrocarbons dominate (Glavin et al., 2013). This, in addition to the previous identification of chloromethane and dichloromethane by the 1976 Viking missions (Biemann et al., 1977), suggest that there could be another, possibly Martian, source of organic carbon contributing to the formation of the C1 chlorohydrocarbons, or other components of the solid samples analyzed by SAM are having a catalytic effect on chlorohydrocarbon generation. Laboratory analogue experiments investigated a suite of organic compounds that have the potential to accumulate on Mars (Benner et al., 2000) and thus serve as sources of carbon for the formation of chlorohydrocarbons detected by the SAM and Viking GCMS instruments. Experiments were conducted under SAM-like conditions using a commercial pyroprobe equipped with a SAM-like hydrocarbon trap and coupled to a GCMS. In general, when pyrolyzed with 1 wt.% calcium perchlorate, the C1 organic compounds (e.g. methanol, formic acid, and formaldehyde) produced only C1 chlorinated compounds while propanol and butyric acid formed only C3 chlorinated compounds. All of the pyrolysis experiments produced chlorobenzene, suggesting that it forms from chlorine, released during calcium perchlorate decomposition, reacting with benzene and toluene, released from the Tenax component of the hydrocarbon trap. Pyrolysis of phthalic acid however, produces a higher abundance of chlorobenzene than could be attributed to the Tenax alone and also forms C1 chlorohydrocarbons. Additional analogue experiments to identify potential precursor compounds for the chlorohydrocarbons detected by SAM are ongoing. JF - American Geophysical Union Fall Meeting AU - Miller, K AU - Summons, R E AU - Eigenbrode, J L AU - Freissinet, C AU - Glavin, D P AU - Martin, M G AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P23B EP - 1785 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700099322?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Analogue+experiments+identify+possible+precursor+compounds+for+chlorohydrocarbons+detected+in+SAM&rft.au=Miller%2C+K%3BSummons%2C+R+E%3BEigenbrode%2C+J+L%3BFreissinet%2C+C%3BGlavin%2C+D+P%3BMartin%2C+M+G%3BAnonymous&rft.aulast=Miller&rft.aufirst=K&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Collisional interactions of low temperature ice milliparticles with spacecraft at speeds up to 120 m/s AN - 1700099305; 2015-070694 AB - There is scant data on collisions between spacecraft and small ice particles at low (<100 K) temperatures and impact speeds of order 100 m/s. These conditions are believed to characterize potential space missions to comets, icy moons, and ring systems. This collisional phenomenology is relevant to fly-by capture and return of samples from planetary targets, and landing on icy surfaces. Previous efforts in the area of ice particle impact response have addressed approximately 3 mm diameter ice spheres near the elastic/inelastic transition speed, approximately 10 m/s (Higa et al, 1998). The present work describes development of specially designed experiments to enable imaging of the fragmentation behavior of 3 mm diameter (nominal) ice spheres at significantly greater impact speeds ( approximately 20-120 m/s) and normal (0 degrees ) and glancing (30 degrees , 45 degrees and 60 degrees ) impacts for the first time. The imaging of the high speed impacts was achieved through precise synchronization of an ice particle dispenser, a rotating polished aluminum alloy impact surface representing the spacecraft, and a high-speed camera. Individual video frames reveal the motion of both the larger impact fragments as well as the average motion of the clouds of small fragments that are generated by the spacecraft-ice impacts. This new experimental capability can be used to help design future planetary missions to icy bodies. JF - American Geophysical Union Fall Meeting AU - Gold, Robert E AU - Iyer, K AU - Struk, Peter M AU - Palacios, J AU - Lynch, Christopher J AU - Vargas, Mario AU - Spisz, Tom AU - Kreeger, Richard E AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P41E EP - 1964 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700099305?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Collisional+interactions+of+low+temperature+ice+milliparticles+with+spacecraft+at+speeds+up+to+120+m%2Fs&rft.au=Gold%2C+Robert+E%3BIyer%2C+K%3BStruk%2C+Peter+M%3BPalacios%2C+J%3BLynch%2C+Christopher+J%3BVargas%2C+Mario%3BSpisz%2C+Tom%3BKreeger%2C+Richard+E%3BAnonymous&rft.aulast=Gold&rft.aufirst=Robert&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - The multi-stage history of Mt. Sharp AN - 1700099296; 2015-070577 AB - The Curiosity rover is exploring Gale crater and Mt. Sharp, Gale's 5-km high central mound. We are investigating the history of alteration and erosion of Mt. Sharp using orbital imagery, spectroscopy and rover observations. Our results suggest a significant time gap between emplacement of the upper and lower sections of the mound. Crater counts show that the lower mound was formed soon after Gale itself, and that it contains distinct units ranging in altitude from approximately -4,500 to -1,800 m. Spectral data suggest that many units contain phyllosilicates. We found that these clay-bearing rocks occur in distinct layers concentrated below -2,900 m. Parts of the lower mound exhibit a transition from clays to sulfates with increasing altitude. The lower mound shows evidence of flowing water, including canyons and inverted channels. Wind erosion produced km-scale yardangs and scalloped cliffs. Our mapping shows that many yardangs in the lower mound are clay-bearing, with a predominant orientation of around N-S. Curiosity's ground-level images show myriad fine-scale, mainly horizontal layers in the lower mound. The rover has found stream beds and conglomerates, indicating that water once flowed on the crater floor. Drilling near the deepest point in Gale produced abundant clay, providing additional evidence of aqueous alteration. Upper mound units range in altitude from -2,100 m to +500 m, and mantle the lower mound above an angular unconformity. Most upper mound units are composed of layers. The formation age of the upper mound is unknown, since few craters are preserved. Clay-bearing layers are detectable in several locations, mainly at altitudes near -2,000 m. There is no evidence of water flow, but wind erosion has scalloped the surfaces and edges of layers, and fine-scale yardangs are common. Correlations between yardangs and clay spectra are apparent only in the lowermost units of the upper mound. Yardang orientations vary, and include N-S, NW-SE, and NE-SW. Upper mound units resemble the planet-wide Medusae Fossae formation, dated as Hesperian and argued to be composed of ignimbrites. Medusae Fossae layers are easily eroded by wind, and our mapping demonstrates their resemblance to upper mound fine-scale yardangs. The history of Mt. Sharp started with deposition and lithification of sediments shortly after crater formation. Some lower mound layers were partially altered to clays and sulfates, and water formed streams and canyons. Wind erosion of the lower mound produced large-scale yardangs, particularly in clay-rich layers, oriented generally N-S. Upper mound units were emplaced following a considerable period of wind erosion. The absence of water flow on the upper mound suggests that these units were emplaced after atmospheric loss rendered water unstable at the surface. The shift in dominant wind direction, as indicated by yardang orientations, also argues for a time gap between erosion of the lower and upper mound. These observations are consistent with upper mound units being related to the Hesperian Medusae Fossae formation. During 2014 Curiosity is expected to reach the foot of Mt. Sharp and ascend through the clay-rich layers, into the sulfate-rich layers, and possibly past the interface with the upper mound. This will be a unique opportunity to field check geologic models on the surface of Mars. JF - American Geophysical Union Fall Meeting AU - Allen, C AU - Dapremont, A AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P23B EP - 1787 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700099296?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+multi-stage+history+of+Mt.+Sharp&rft.au=Allen%2C+C%3BDapremont%2C+A%3BAnonymous&rft.aulast=Allen&rft.aufirst=C&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Aerosol particle size retrievals from the Compact Reconnaissance Imaging Spectrometer for Mars AN - 1700099277; 2015-070681 AB - During the extended mission of the Mars Reconnaisance Orbiter, the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) has made periodic limb-viewing geometry observations of the Martian atmosphere. Sufficient radiance is typically available to produce a vertical distribution of dust and water ice aerosols from the surface to approximately 50 km altitude. Radiative transfer modeling is conducted to achieve a best fit between the observed and modeled spectrum. The spherical geometry of the limb-viewing geometry is handled using a pseudo-spherical approximation that is computationally efficient and accurate to within a few percent of a Monte Carlo method for the geometries observed. Different particle sizes of dust and water ice have unique extinction coefficients across the visible and near-infrared portion of the spectrum observed by CRISM. We use a wide range of wavelengths across the CRISM spectrum to conduct the retrieval. Here we provide initial results on the retrieval of dust and water ice particle sizes over the duration of the CRISM limb-viewing observations. JF - American Geophysical Union Fall Meeting AU - Guzewich, S AU - Smith, Michael D AU - Wolff, M J AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P41C EP - 1943 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700099277?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Aerosol+particle+size+retrievals+from+the+Compact+Reconnaissance+Imaging+Spectrometer+for+Mars&rft.au=Guzewich%2C+S%3BSmith%2C+Michael+D%3BWolff%2C+M+J%3BAnonymous&rft.aulast=Guzewich&rft.aufirst=S&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Ash dispersal in planetary atmospheres; continuum vs. non-continuum effects AN - 1700099209; 2015-070677 AB - The dispersal of ash from a volcanic vent on any given planet is dictated by particle properties (density, shape, and size distribution), the intensity of the eruptive source, and the characteristics of the planetary environment (atmospheric structure, wind field, and gravity) into which the ash is erupted. Relating observations of potential pyroclastic deposits to source locations and eruption conditions requires a detailed quantitative understanding of the settling rates of individual particles under changing ambient conditions. For atmospheres that are well described by continuum mechanics, the conventional Newtonian description of particle motion allows particle settling velocities to be related to particle characteristics via a drag coefficient. However, under rarefied atmospheric conditions (i.e., on Mars and at high altitude on Earth), non-continuum effects become important for ash-sized particles, and an equation of motion based on statistical mechanics is required for calculating particle motion. We have developed a rigorous new treatment of particle settling under variable atmospheric conditions and applied it to Earth and Mars. When non-continuum effects are important (as dictated by the mean free path of atmospheric gas relative to the particle size), fall velocities are greater than those calculated by continuum mechanics. When continuum conditions (i.e., higher atmospheric densities) are reached during descent, our model switches to a conventional formulation that determines the appropriate drag coefficient as the particle transits varying atmospheric properties. The variation of settling velocity with altitude allows computation of particle trajectories, fall durations and downwind dispersal. Our theoretical and numerical analyses show that several key, competing factors strongly influence the downwind trajectories of ash particles and the extents of the resulting deposits. These factors include: the shape of the particles (non-spherical particles fall more slowly than spherical particle shapes commonly adopted in settling models); the formation of particle aggregates, which enhances settling rates; and the lagging of particle motion behind the ambient wind field, which results in less widely dispersed deposits. Above all, any particles experiencing non-continuum effects settle faster and are less widely dispersed than particles falling in an entirely continuum regime. Our model results demonstrate the complex interplay of these factors in the Martian environment, and our approach provides a basis for relating deposits observed in planetary datasets to candidate volcanic sources and eruption conditions. This allows for a critical reassessment of the potential for explosive volcanism to contribute to extremely widespread, fine-grained, layered deposits such as the Medusae Fossae Formation. JF - American Geophysical Union Fall Meeting AU - Fagents, S A AU - Baloga, Steve M AU - Glaze, Lori S AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P41C EP - 1939 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700099209?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Ash+dispersal+in+planetary+atmospheres%3B+continuum+vs.+non-continuum+effects&rft.au=Fagents%2C+S+A%3BBaloga%2C+Steve+M%3BGlaze%2C+Lori+S%3BAnonymous&rft.aulast=Fagents&rft.aufirst=S&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Detecting complex organic compounds using the sam wet chemistry experiment on Mars AN - 1700099178; 2015-070593 AB - The search for organic molecules on Mars can provide important first clues of abiotic chemistry and/or extinct or extant biota on the planet. Gas Chromatography Mass Spectrometry (GC-MS) is currently the most relevant space-compatible analytical tool for the detection of organic compounds. Nevertheless, GC separation is intrinsically restricted to volatile molecules, and many molecules of astrobiological interest are chromatographically refractory or polar. To analyze these organics such as amino acids, nucleobases and carboxylic acids in the Martian regolith, an additional derivatization step is required to transform them into volatile derivatives that are amenable to GC analysis. As part of the Sample Analysis at Mars (SAM) experiment onboard Mars Science Laboratory (MSL) Curiosity rover, a single-step protocol of extraction and chemical derivatization with the silylating reagent N-methyl-N-(tert-butyldimethylsilyl)-trifluoroacetamide (MTBSTFA) has been developed to reach a wide range of astrobiology-relevant refractory organic molecules (Mahaffy et al. 2012; Stalport et al. 2012). Seven cups in the SAM instrument are devoted to MTBSTFA derivatization. However, this chemical reaction adds a protective silyl group in place of each labile hydrogen, which makes the molecule non-identifiable in common mass spectra libraries. Therefore, we have created an extended library of mass spectra of MTBSTFA derivatized compounds of interest, considering their potential occurrence in Mars soils. We then looked specifically for MTBSTFA derivatized compounds using the existing and the newly created library, in various Mars analog soils. To enable a more accurate interpretation of the in situ derivatization GC-MS results that will be obtained by SAM, the lab experiments were performed as close as possible to the SAM flight instrument experimental conditions. Our first derivatization experiments display promising results, the laboratory system permitting an extraction and detection of several proteinogenic amino acids and carboxylic acids from Martian analog materials. Preliminary results show a lack of derivatized organic molecules in hydrated solid samples however, where the MTBSTFA reagent possibly reacts preferentially with the water from hydrated minerals (Stalport et al. 2012). This result shows the importance of a complete understanding of the MTBSTFA reaction depending on the nature of the soil and will help guide the selection of optimal samples for the SAM wet chemistry on Mars. JF - American Geophysical Union Fall Meeting AU - Freissinet, Caroline AU - Buch, A AU - Glavin, Daniel P AU - Brault, A AU - Eigenbrode, Jennifer L AU - Kashyap, Srishti AU - Martin, Mildred G AU - Miller, K AU - Mahaffy, Paul R AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P23C EP - 1803 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700099178?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Detecting+complex+organic+compounds+using+the+sam+wet+chemistry+experiment+on+Mars&rft.au=Freissinet%2C+Caroline%3BBuch%2C+A%3BGlavin%2C+Daniel+P%3BBrault%2C+A%3BEigenbrode%2C+Jennifer+L%3BKashyap%2C+Srishti%3BMartin%2C+Mildred+G%3BMiller%2C+K%3BMahaffy%2C+Paul+R%3BAnonymous&rft.aulast=Freissinet&rft.aufirst=Caroline&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-11-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - Terrestrial analogs for clay minerals at Yellowknife Gay, Gale crater, Mars AN - 1700099168; 2015-070592 AB - Sediments of the Sheepbed unit, Gale Crater, were analyzed by the CheMin X-ray diffraction instrument on the Curiosity Rover. The sediments consist of typical basalt minerals (Fe-forsterite, augite, pigeonite, plagioclase), as well as Fe oxide/hydroxides, Fe-sulfides, amorphous material, and a phyllosilicate. The phyllosilicate has a broad 001 peak at approximately 1.0 nm, consistent with a poorly ordered smectite. However, in the absence of diagnostic tests possible on Earth, its identity is not clear. The position of the 06L diffraction band is generally used to distinguish dioctahedral from trioctahedral smectite, but it is beyond CheMin's range of 2theta . The measured position of the 02L diffraction band ( approximately 22.5 degrees 2theta by CheMin), implies that the smectite is trioctahedral. The exact position and shape of the 02L band is determined by the cations in the 'M' sites of the smectite; to constrain those cations, we sought analogs among terrestrial smectites, emphasizing those developed from basaltic precursors. A potential analog for the Sheepbed smectite is 'griffithite,' a variety of trioctahedral smectite in altered basalt of the Topanga formation, Griffith Park, Los Angeles. 'Griffithite' has an 02L diffraction band that is close in position and shape to that of the Sheepbed smectite, although 'griffithite' has a very sharp 001 peak, indicating a high degree of layer ordering not seen in the Sheepbed smectite. A typical chemical formula for 'griffithite,' determined by electron microprobe, is (Ca0.59 Na0.03) (Mg4.28 Fe1.83) (Si6.64 Al1.36) O20 (OH)4, normalized to Si+Al=8. This formula is consistent with a fully trioctahedral Fe-Mg smectite with Ca and Na as interlayer cations. In the Topanga basalt, four types of 'griffithite' are present: fine-grained, filling cracks and vesicles; coarse-grained, filling vesicles; coarse-grained, replacing olivine phenocrysts; and coarse-grained, replacing glassy mesostasis. The fine-grained 'griffithite' formed first, and the last three varieties may be contemporaneous. One sample shows agate (alpha -quartz) that was precipitated between the episodes of deposition of the fine-grained and coarse-grained 'griffithite.' 'Griffithite' is not unique as a possible terrestrial analog - some clay minerals from the Doushantou formation, China, have similar 02L diffraction bands, and many basalts contain smectites in vesicles and as replacements after olivine. Similar trioctahedral smectites occur also in the nakhlite martian meteorites - as veinlets and replacements of olivine. By understanding the formation of these terrestrial clays, we hope to constrain the nature and mechanism of formation of the Sheepbed clay mineral. JF - American Geophysical Union Fall Meeting AU - Treiman, A H AU - Morris, R V AU - Bristow, T AU - Ming, D W AU - Achilles, C AU - Bish, D L AU - Blake, D AU - Vaniman, D AU - Chipera, S AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P23C EP - 1802 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700099168?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Terrestrial+analogs+for+clay+minerals+at+Yellowknife+Gay%2C+Gale+crater%2C+Mars&rft.au=Treiman%2C+A+H%3BMorris%2C+R+V%3BBristow%2C+T%3BMing%2C+D+W%3BAchilles%2C+C%3BBish%2C+D+L%3BBlake%2C+D%3BVaniman%2C+D%3BChipera%2C+S%3BAnonymous&rft.aulast=Treiman&rft.aufirst=A&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - The first X-ray diffraction patterns of clay minerals from Gale crater AN - 1700099149; 2015-070576 AB - The Mars Science Laboratory (MSL) Rover, Curiosity spent approximately 150 sols at Yellowknife Bay (YKB) studying a section of fluvio-lacustrine sedimentary rocks (with potential indications of volcanic influence), informally known as the Yellowknife Bay formation. YKB lies in a distal region of the Peace Vallis alluvial fan, which extends from the northern rim of Gale Crater toward the dune field at the base of Mt Sharp. Sedimentological and stratigraphic observations are consistent with the Yellowknife Bay formation being part of a distal fan deposit, which could be as young as middle Hesperian to even early Amazonian in age ( approximately 3.5 to 2.5 Ga). The Yellowknife Bay formation hosts a unit of mudstone called the Sheepbed member. Curiosity obtained powdered rock samples from two drill holes in the Sheepbed Member, named John Klein and Cumberland, and delivered them to instruments in Curiosity. Data from CheMin, a combined X-ray diffraction (XRD)/X-ray fluorescence instrument (XRF), has allowed detailed mineralogical analysis of mudstone powders revealing a clay mineral component of approximately 20 wt.% in each sample. The clay minerals are important indicators of paleoenvironmental conditions and sensitive recorders of post-depositional alteration processes. The XRD pattern of John Klein reveals a 02l band consistent with a trioctahedral phyllosilicate. A broad peak at approximately 10A with a slight inflexion at approximately 12A indicates the presence of 2:1 type clay minerals in the John Klein sample. The trioctahedral nature of the clay minerals, breadth of the basal reflection, and presence of a minor component with larger basal spacing suggests that John Klein contains a trioctahedral smectite (probably saponite), whose interlayer is largely collapsed because of the low-humidity conditions. The XRD patterns show no evidence of corrensite (mixed-layer chlorite/smectite) or chlorite, which are typical diagenetic products of trioctahedral smectites when subjected to burial and heating >60 degrees C in the presence of water. Given estimated geothermal gradients on Mars temperatures <60 degrees C might still be consistent with (but do not require) moderate burial. However, our ability to identify interstratified minerals is greatly limited by the lack of access to traditional treatments methods used in the lab (e.g., ethylene glycol solvation). Our preferred explanation for the origin of trioctahedral smectites in Sheepbed mudstone is in situ production via reaction of olivine, water and Si-bearing amorphous material, an important mudstone component detected by XRD. Elevated levels of magnetite in the Sheepbed and the trioctahedral monomineralic nature of the clay minerals support this model. These observations, combined with previous studies of olivine stability, support the persistence of circum-neutral hydrous conditions for thousands of years at YKB. JF - American Geophysical Union Fall Meeting AU - Bristow, T AU - Blake, D AU - Bish, D L AU - Vaniman, D AU - Ming, D W AU - Morris, R V AU - Chipera, S AU - Rampe, E B AU - Farmer, J D AU - Treiman, A H AU - Downs, R AU - Morrison, S AU - Achilles, C AU - Des Marais, D J AU - Crisp, J A AU - Sarrazin, P AU - Morookian, J AU - Grotzinger, J P AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P23B EP - 1786 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700099149?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+first+X-ray+diffraction+patterns+of+clay+minerals+from+Gale+crater&rft.au=Bristow%2C+T%3BBlake%2C+D%3BBish%2C+D+L%3BVaniman%2C+D%3BMing%2C+D+W%3BMorris%2C+R+V%3BChipera%2C+S%3BRampe%2C+E+B%3BFarmer%2C+J+D%3BTreiman%2C+A+H%3BDowns%2C+R%3BMorrison%2C+S%3BAchilles%2C+C%3BDes+Marais%2C+D+J%3BCrisp%2C+J+A%3BSarrazin%2C+P%3BMorookian%2C+J%3BGrotzinger%2C+J+P%3BAnonymous&rft.aulast=Bristow&rft.aufirst=T&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-11-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - In-situ exploration of Venus; major science objectives, investigations, and mission platform options AN - 1700099138; 2015-070683 AB - In-situ missions to Venus have been recommended by both the 2011 and 2003 Decadal Studies of the NRC and have been proposed numerous times to NASA's Discovery and New Frontiers programs as well as to ESA's Cosmic Vision program. Such missions would revolutionize our understanding of Venus, as they address key questions of Venus's origin, evolution, and current state via high precision measurements of (1) noble gases and their isotopes, and (2) reactive trace gases and aerosol associated with Venus's active photo- and thermo-chemistry and sulfur cycle, including components potentially responsible for the poorly-understood uv-absorbing haze layer. Fundamental questions, as promoted in recent VEXAG documents, include: (1) Did Venus, Mars, and Earth have a common origin? (2) What roles did comets from the outer Solar System play in delivering volatiles to Venus? (3) Did Venus once have and lose a global ocean? (4) How much has Venus outgassed, and what is the current rate of outgassing, particularly of sulfur, the major driver of Venus clouds? and (5) Through the deposition of energy within them, what role do these clouds play in (a) driving the cloud-level thermal structure and (b) generating and maintaining the super-rotating zonal windfield that covers the globe? Fundamental answers could be uniquely provided through in-situ sampling via mass spectrometry of the noble gases and their isotopes - in particular of the 8 stable Xe isotopes, the bulk abundances of Kr, and the 3 isotopes of Ne. Measurements of the relative abundances of the light isotopes of N, O, H, S and O, by, for example, tunable laser spectrometry, would provide additional insights into Venus's origin, surface outgassing and planetary escape. Such measurements could be performed by probes, landers, or balloons. On descent through the uv-absorbing layer and the surrounding H2SO4 cloud, each of these platforms could explore both the absorber and sulfur-cycle-associated reactive species and aerosols, thus addressing VEXAG desires for enhanced understanding of Venus' chemical cycles, aerosol properties, and radiative transfer. On descent to the surface, probes and landers can provide vertical profiles of temperatures and species abundances, as well as provide near-surface measurements of sulfur isotopes and trace sulfuric gases indicative of outgassing. Additional major in-situ goals dealing with Venus's global circulation and local dynamics can be addressed by a balloon platform floating within the convective middle cloud near approximately 55-km altitude. Drifting over a wide range of latitudes and all times-of-day and longitudes, such a floating platform could accurately measure (1) motions in all three dimensions--zonal, meridional, and vertical, including motions associated with convection and gravity waves, (2) simultaneous measurements of cloud particle size, their parent molecules, the local temperature, and vertical velocity, to study cloud formation/dissipation processes, and (3) the power and frequency of local lightning. Altogether, such in-situ measurements would potentially revolutionize our understanding of (1) Venus's circulation, including the role of waves and solar cloud heating in powering the planet's poorly-understood super-rotation, (2) Venus's sulfur cycle, key to Venus's current climate, and (3) how Earth's neighbor formed and evolved over the aeons. JF - American Geophysical Union Fall Meeting AU - Baines, K H AU - Limaye, S S AU - Hall, Jeffrey L AU - Atreya, S K AU - Bullock, M A AU - Crisp, David AU - Grinspoon, David H AU - Mahaffy, Paul R AU - Russell, C T AU - Webster, Chris R AU - Zahnle, K J AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P41D EP - 1952 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700099138?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+exploration+of+Venus%3B+major+science+objectives%2C+investigations%2C+and+mission+platform+options&rft.au=Baines%2C+K+H%3BLimaye%2C+S+S%3BHall%2C+Jeffrey+L%3BAtreya%2C+S+K%3BBullock%2C+M+A%3BCrisp%2C+David%3BGrinspoon%2C+David+H%3BMahaffy%2C+Paul+R%3BRussell%2C+C+T%3BWebster%2C+Chris+R%3BZahnle%2C+K+J%3BAnonymous&rft.aulast=Baines&rft.aufirst=K&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Rapid degradation of the complex organic molecules in Martian surface rocks due to exposure to cosmic rays; implications to the search of "extinct" life on Mars by MSL and ExoMars AN - 1700099108; 2015-070594 AB - Until recently, long-term exposure to cosmic rays has not been recognized as a major environmental factor, which can alter and destroy organic molecules in the Martian surface rocks. Recent modeling studies (e.g. Pavlov et al., 2012) suggested that organic molecules with masses >100 amu would be degraded in less than 1 billion years in the top 5 cm of the Martian rocks. That poses a serious challenge to the search of ancient molecules in the shallow subsurface of Mars. However, Pavlov et al. calculated the fraction of the survived organic molecules using conservative radiolysis constants derived from the gamma irradiation experiments on pure dry amino acid mixtures (Kminek and Bada, 2006). In this study we conducted a series of gamma irradiations of amino acids and carboxylic acids mixed with silica powder. We report that the addition of silicates dramatically increased the rate of organic degradation under gamma radiation. Using the newly derived radiolysis constants for amino acids and carboxylic acids in mineral mixtures, we recalculated the rate of organic degradation in the Martian rocks as a function of rocks' depth, chemical composition and weathering rates. Our results suggest that isolated organic molecules (acids) are likely to be altered or fully degraded in the surface rocks on Mars by cosmic rays in less than 10 million years unless some additional protective mechanisms are in place. We will discuss possible strategies for the MSL's search of the elusive ancient organic molecules to overcome the adverse effects of cosmic rays in the surface Martian rocks. JF - American Geophysical Union Fall Meeting AU - Pavlov, Alexander AU - Eigenbrode, Jennifer L AU - Glavin, Daniel P AU - Floyd, Melissa AU - Mahaffy, Paul R AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P23C EP - 1804 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700099108?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+degradation+of+the+complex+organic+molecules+in+Martian+surface+rocks+due+to+exposure+to+cosmic+rays%3B+implications+to+the+search+of+%22extinct%22+life+on+Mars+by+MSL+and+ExoMars&rft.au=Pavlov%2C+Alexander%3BEigenbrode%2C+Jennifer+L%3BGlavin%2C+Daniel+P%3BFloyd%2C+Melissa%3BMahaffy%2C+Paul+R%3BAnonymous&rft.aulast=Pavlov&rft.aufirst=Alexander&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Seasonal variation of aerosol particle size using MER/Pancam sky imaging AN - 1700099104; 2015-070679 AB - Imaging of the sky taken by the Pancam cameras on-board the Mars Exploration Rovers (MER) provide a useful tool for determining the optical depth and physical properties of aerosols above the rover. Specifically, the brightness of the sky as a function of angle away from the Sun provides a powerful constraint on the size distribution and shape of dust and water ice aerosols. More than 100 Pancam "sky surveys" were taken by each of the two MER rovers covering a time span of several Mars years and a wide range of dust loading conditions including the planet-encircling dust storm during Mars Year 28 (Earth year 2007). These sky surveys enable the time evolution of aerosol particle size to be determined including its relation to dust loading. Radiative transfer modeling is used to model the observations. Synthetic Pancam sky brightness is computed using a discrete-ordinates radiative transfer code that accounts for multiple scattering from aerosols and spherical geometry by integrating the source functions along curved paths in that coordinate system. We find that Mie scattering from spheres is not a good approximation for describing the angular variation of sky brightness far from the Sun (at scattering angles greater than 45 degrees). Significant seasonal variations are seen in the retrieved effective radius of the aerosols with higher optical depth strongly correlated with larger particle size. JF - American Geophysical Union Fall Meeting AU - Smith, Michael D AU - Wolff, M J AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P41C EP - 1941 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700099104?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Seasonal+variation+of+aerosol+particle+size+using+MER%2FPancam+sky+imaging&rft.au=Smith%2C+Michael+D%3BWolff%2C+M+J%3BAnonymous&rft.aulast=Smith&rft.aufirst=Michael&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Simulation and comparison of Martian surface ionization radiation AN - 1700099080; 2015-070582 AB - The spectrum of energetic particle radiation and corresponding doses at the surface of Mars is being characterized by the Radiation Assessment Detector (RAD), one of ten science instruments on the Mars Science Laboratory (MSL) Curiosity Rover. The time series of dose rate for the first 300 Sols after landing on Mars on August 6, 2012 is presented here. For the comparison to RAD measurements of dose rate, Martian surface ionization radiation is simulated by utilizing observed space quantities. The GCR primary radiation spectrum is calculated by using the Badhwar-O'Neill 2011 (BO11) galactic cosmic ray (GCR) model, which has been developed by utilizing all balloon and satellite GCR measurements since 1955 and the newer 1997-2012 Advanced Composition Explorer (ACE) measurements. In the BO11 model, solar modulation of the GCR primary radiation spectrum is described in terms of the international smoothed sunspot number and a time delay function. For the transport of the impingent GCR primary radiation through Mars atmosphere, a vertical distribution of atmospheric thickness at each elevation is calculated using the vertical profiles of atmospheric temperature and pressure made by Mars Global Surveyor measurements. At Gale Crater in the southern hemisphere, the seasonal variation of atmospheric thickness is accounted for the daily atmospheric pressure measurements of the MSL Rover Environmental Monitoring Station (REMS) by using low- and high-density models for cool- and warm-season, respectively. The spherically distributed atmospheric distance is traced along the slant path, and the resultant directional shielding by Martian atmosphere is coupled with Curiosity vehicle for dose estimates. We present predictions of dose rate and comparison to the RAD measurements. The simulation agrees to within +-20% with the RAD measurements showing clearly the variation of dose rate by heliospheric conditions, and presenting the sensitivity of dose rate by atmospheric pressure, which has been found from the RAD experiments and driven by thermal tides on Martian surface. JF - American Geophysical Union Fall Meeting AU - Kim, M Y AU - Zeitlin, C J AU - Hassler, D AU - Cucinotta, F AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P23C EP - 1792 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700099080?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Simulation+and+comparison+of+Martian+surface+ionization+radiation&rft.au=Kim%2C+M+Y%3BZeitlin%2C+C+J%3BHassler%2C+D%3BCucinotta%2C+F%3BAnonymous&rft.aulast=Kim&rft.aufirst=M&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - The search for nitrates on Mars by the Sample Analysis at Mars (SAM) instrument AN - 1700098976; 2015-070597 AB - Planetary models suggest that nitrogen was abundant in the early Martian atmosphere as N (sub 2) but it was lost by sputtering and photochemical loss to space, impact erosion, and chemical oxidation to nitrates. A nitrogen cycle may exist on Mars where nitrates, produced early in Mars' history, may have been later decomposed back into N (sub 2) by the current impact flux. Nitrates are a fundamental source of nitrogen for terrestrial microorganisms, and they have evolved metabolic pathways to perform both oxidation and reduction to drive a complete biological nitrogen cycle. Therefore, the characterization of nitrogen in Martian soils is important to assess habitability of the Martian environment, particularly with respect to the presence of nitrates. The only previous mission that was designed to search for soil nitrates was the Phoenix mission but N-containing species were not detected by TEGA or the MECA WCL. Nitrates have been tentatively identified in Nakhla meteorites, and if nitrogen was oxidized on Mars, this has important implications for the habitability potential of Mars. Here we report the results from the Sample Analysis at Mars (SAM) instrument suite aboard the Curiosity rover during the first year of surface operations in Gale Crater. Samples from the Rocknest aeolian deposit and sedimentary rocks (John Klein) were heated to approximately 835 degrees C under helium flow and the evolved gases were analyzed by MS and GC-MS. Two and possibly three peaks may be associated with the release of m/z 30 at temperatures ranging from 180 degrees C to 500 degrees C. M/z 30 has been tentatively identified as NO; other plausible contributions include CH (sub 2) O and an isotopologue of CO, (super 12) C (super 18) O. NO, CH (sub 2) O, and CO may be reaction products of reagents (MTBSTFA/DMF) carried from Earth for the wet chemical derivatization experiments with SAM and/or derived from indigenous soil nitrogenated organics. Laboratory analyses indicate that it is also possible that <550 degrees C evolved NO is produced via reaction of HCl with nitrates arising from the decomposition of perchlorates. All sources of m/z 30 whether it be martian or terrestrial will be considered and their implications for Mars will be discussed. JF - American Geophysical Union Fall Meeting AU - Navarro-Gonzalez, R AU - Stern, Jennifer C AU - Freissinet, Caroline AU - McKay, C P AU - Sutter, Brad AU - Archer, P Doug, Jr AU - McAdam, Amy AU - Franz, Heather B AU - Coll, P J AU - Glavin, Daniel P AU - Eigenbrode, Jennifer L AU - Wong, Mike AU - Atreya, S K AU - Wray, J J AU - Steele, A AU - Prats, Benito D AU - Szopa, Cyril AU - Coscia, David AU - Teinturier, Samuel AU - Buch, A AU - Leshin, L A AU - Ming, Douglas W AU - Conrad, Pamela G AU - Cabane, Michel AU - Mahaffy, Paul R AU - Grotzinger, J P AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P23C EP - 1807 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700098976?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+search+for+nitrates+on+Mars+by+the+Sample+Analysis+at+Mars+%28SAM%29+instrument&rft.au=Navarro-Gonzalez%2C+R%3BStern%2C+Jennifer+C%3BFreissinet%2C+Caroline%3BMcKay%2C+C+P%3BSutter%2C+Brad%3BArcher%2C+P+Doug%2C+Jr%3BMcAdam%2C+Amy%3BFranz%2C+Heather+B%3BColl%2C+P+J%3BGlavin%2C+Daniel+P%3BEigenbrode%2C+Jennifer+L%3BWong%2C+Mike%3BAtreya%2C+S+K%3BWray%2C+J+J%3BSteele%2C+A%3BPrats%2C+Benito+D%3BSzopa%2C+Cyril%3BCoscia%2C+David%3BTeinturier%2C+Samuel%3BBuch%2C+A%3BLeshin%2C+L+A%3BMing%2C+Douglas+W%3BConrad%2C+Pamela+G%3BCabane%2C+Michel%3BMahaffy%2C+Paul+R%3BGrotzinger%2C+J+P%3BAnonymous&rft.aulast=Navarro-Gonzalez&rft.aufirst=R&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Priorities for Venus exploration AN - 1700098948; 2015-070682 AB - Venus remains one of the most enigmatic bodies in our Solar System. Important questions remain regarding the origin and evolution of the atmosphere, the history of the surface and interior, and how the surface and atmosphere interact. In a broader context, understanding Venus has implications for understanding the evolution of terrestrial planets in our Solar System as well as for interpreting the growing set of observations of extra-solar planets. The Venus Exploration Analysis Group (VEXAG), established in 2005, is chartered by NASA's Planetary Science Division and reports its findings to the NASA Advisory Council. Open to all interested scientists, VEXAG regularly evaluates Venus exploration goals, scientific objectives, investigations and critical measurement requirements, including especially recommendations in the NRC Decadal Survey and the Solar System Exploration Strategic Roadmap. At the last general meeting in November 2012, VEXAG resolved to update the scientific priorities and strategies for Venus exploration. To achieve this goal, three major tasks were defined for 2013, (1) update the document prioritizing Goals, Objectives and Investigations for Venus Exploration, (2) develop a Roadmap for Venus exploration that is consistent with VEXAG priorities as well as Planetary Decadal Survey priorities, and (3) develop a white paper on technologies for Venus missions. Proposed versions of all three documents were presented at the VEXAG general meeting in November 2013. Here, we present the findings and final versions of all three documents for community comment and feedback. A follow-on Workshop on Venus Exploration Targets is also being planned for the early summer of 2014. The workshop will provide a forum for the Venus science community to discuss approaches for addressing high priority investigations. Participants will be encouraged to present their ideas for specific targets on Venus (interior, surface and atmosphere) as well as to present specific data requirements (measurement type, resolution, precision, etc.) needed to answer key questions. JF - American Geophysical Union Fall Meeting AU - Glaze, Lori S AU - Beauchamp, Patricia M AU - Chin, Gordon AU - Crisp, David AU - Grimm, R E AU - Herrick, R R AU - Johnston, S AU - Limaye, S S AU - Smrekar, S E AU - Ocampo, A AU - Thompson, T W AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P41D EP - 1944 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700098948?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Priorities+for+Venus+exploration&rft.au=Glaze%2C+Lori+S%3BBeauchamp%2C+Patricia+M%3BChin%2C+Gordon%3BCrisp%2C+David%3BGrimm%2C+R+E%3BHerrick%2C+R+R%3BJohnston%2C+S%3BLimaye%2C+S+S%3BSmrekar%2C+S+E%3BOcampo%2C+A%3BThompson%2C+T+W%3BAnonymous&rft.aulast=Glaze&rft.aufirst=Lori&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Midlatitude ice-rich ground on Mars as a target in the search for evidence of life and for in situ resource utilization on human missions AN - 1700098930; 2015-070636 AB - Mid latitude ground ice is of interest in the search for life as well as a possible resource for human exploration. We review the evidence of mid-latitude ground ice on Mars, review the possible explanations for its occurrence, and then consider the potential for this ground ice to be a recent habitat for life. We systematically analyze Mars remote sensing datasets to determine if a viable landing site exists to fulfill the science, human exploration, and engineering criterions to support a Mars life detection mission. We classify each site according to 1) presence of polygons as a proxy for subsurface ice, 2) presence and abundance of rough topographic obstacles (e.g., large cracks, cliffs, uneven topography, etc.), 3) rock density, 4) presence and abundance of large boulders, and 5) presence of craters. We find that a suitable landing site exists within Amazonis Planitia which is adjacent to a recently excavated crater harboring water ice in the near subsurface. Thus a Mars life detection mission can be flown and executed at an ice-rich landing site on Mars consistent with the predefined mission constraints. JF - American Geophysical Union Fall Meeting AU - Schurmeier, L AU - Heldmann, J L AU - McKay, C P AU - Davila, A AU - Stoker, C AU - Marinova, M AU - Wilhelm, M AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P23F EP - 1856 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700098930?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Midlatitude+ice-rich+ground+on+Mars+as+a+target+in+the+search+for+evidence+of+life+and+for+in+situ+resource+utilization+on+human+missions&rft.au=Schurmeier%2C+L%3BHeldmann%2C+J+L%3BMcKay%2C+C+P%3BDavila%2C+A%3BStoker%2C+C%3BMarinova%2C+M%3BWilhelm%2C+M%3BAnonymous&rft.aulast=Schurmeier&rft.aufirst=L&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Evidence for smectite clays from MSL SAM analyses of mudstone at Yellowknife Bay, Gale crater, Mars AN - 1700098888; 2015-070574 AB - Drilled samples of mudstone from the Sheepbed unit at Yellowknife Bay were analyzed by MSL instruments including the Sample Analysis at Mars (SAM) and Chemistry and Mineralogy (CheMin) instruments in MSL's Analytical Laboratory. CheMin analyses revealed the first in situ X-ray diffraction based evidence of clay minerals on Mars, which are likely trioctahedral smectites (e.g., saponite) and comprise approximately 20% of the mudstone sample (e.g., Bristow et al., this meeting). SAM analyses, which heated the mudstone samples to 1000oC and monitored volatiles evolved to perform in situ evolved gas analysis mass spectrometry (EGA-MS), resulted in a H2O trace exhibiting a wide evolution at temperatures <500oC, and an evolution peak at higher temperatures near approximately 750oC. The low temperature H2O evolution has many potential contributors, including adsorbed H2O, smectite interlayer H2O, and structural H2O/OH from bassanite and akaganeite (identified by CheMin) and H2O/OH from amorphous phases in the sample. The high temperature H2O is consistent with the evolution of H2O from the dehydroxylation of the smectite clay mineral. Comparison to EGA-MS data collected under SAM-like conditions on a variety of clay mineral reference materials indicate that a trioctahedral smectite, such as saponite, is most consistent with the high temperature H2O evolution observed. There may also be SAM EGA-MS evidence for a small high temperature H2O evolution from scoop samples from the Yellowknife Bay Rocknest sand shadow bedform. As in the mudstone samples, this evolution may indicate the detection of smectite clays, and the idea that minor clays may be present in Rocknest materials that could be expected to be at least partially derived from local sources is reasonable. But, because smectite clays were not definitively observed in CheMin analyses of Rocknest materials, they must be present at much lower abundances than the DF20% observed in the mudstone samples. This potential detection underscores the complementary nature of the MSL CheMin and SAM instruments for investigations of martian sample mineralogy. Information on the nature of Yellowknife Bay clay minerals may also be available from the detection of H2 evolved during SAM EGA-MS at high temperature. A likely source of at least some of this H2 is H2O evolved from the smectite clays at high temperature, and it is possible these evolutions can be used in a similar fashion to high temperature H2O releases to provide constraints on the clay minerals in a sample. In addition, the D/H of this high temperature H2, as well as the H2O, can be derived from SAM MS and Tunable Laser Spectrometer (TLS) data, respectively. These D/H values may help to inform the provenance of high and low temperature water evolved from martian samples (Mahaffy et al., this meeting). JF - American Geophysical Union Fall Meeting AU - McAdam, Amy AU - Franz, Heather B AU - Mahaffy, Paul R AU - Eigenbrode, Jennifer L AU - Stern, Jennifer C AU - Brunner, Anna E AU - Sutter, Brad AU - Archer, P Doug AU - Ming, Douglas W AU - Morris, Richard V AU - Atreya, S K AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P23B EP - 1784 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700098888?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+smectite+clays+from+MSL+SAM+analyses+of+mudstone+at+Yellowknife+Bay%2C+Gale+crater%2C+Mars&rft.au=McAdam%2C+Amy%3BFranz%2C+Heather+B%3BMahaffy%2C+Paul+R%3BEigenbrode%2C+Jennifer+L%3BStern%2C+Jennifer+C%3BBrunner%2C+Anna+E%3BSutter%2C+Brad%3BArcher%2C+P+Doug%3BMing%2C+Douglas+W%3BMorris%2C+Richard+V%3BAtreya%2C+S+K%3BAnonymous&rft.aulast=McAdam&rft.aufirst=Amy&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Atmospheric krypton and xenon measurements from Mars Science Laboratory AN - 1700098864; 2015-070651 AB - The heavy noble gases krypton and xenon are important tracers of planetary processes from accretion to differentiation and to atmospheric escape. Their abundance and stable isotopic ratios are also indicative of sources as well. The Sample Analysis at Mars (SAM) investigation on the Curiosity rover has measured the Martian atmosphere and reported on the volume mixing ratio of its major constituents (Mahaffy et al., 2013). Here we report the abundance and isotopic ratios of Kr and Xe in the atmosphere of Mars as obtained by semi-static operation of the SAM quadrupole mass spectrometer. Viking provided the first in situ detection of these gases (Owen et al, 1977), suggesting upper limits of 300 ppb for Kr and 80 ppb for Xe, based upon calibration gases with terrestrial isotopic abundances. The abundances of individual isotopes as well as their ratios to one another have been derived from martian meteorite samples by many investigators (e.g., Becker & Pepin, 1984; Bogard & Garrison, 1998). The SAM heavy noble gas data complement the argon isotopic data reported in Mahaffy et al., 2013. Becker, R. H., & Pepin, R. O. (1984). The case for a Martian origin of the shergottites: Nitrogen and noble gases in EETA 79001. Earth and Planetary Science Letters, 69(2), 225-242. Bogard, D. D., & Garrison, D. H. (1998). Relative abundances of argon, krypton, and xenon in the Martian atmosphere as measured in Martian meteorites. Geochimica et cosmochimica acta, 62(10), 1829-1835. Mahaffy, et al., (2013) Abundance and isotopic composition of gases in the martian atmosphere from the Curiosity rover. Science 341, 263-266 Owen, T. et al.,(1977). The composition of the atmosphere at the surface of Mars. Journal of Geophysical research, 82(28), 4635-4639. JF - American Geophysical Union Fall Meeting AU - Conrad, Pamela G AU - Malespin, Charles A AU - Franz, Heather B AU - Manning, H L AU - Trainer, Melissa G AU - Wong, Mike H AU - Brunner, Anna E AU - Atreya, S K AU - Pepin, R O AU - Jones, J H AU - Owen, T C AU - Mahaffy, Paul R AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P23G EP - 08 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700098864?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Atmospheric+krypton+and+xenon+measurements+from+Mars+Science+Laboratory&rft.au=Conrad%2C+Pamela+G%3BMalespin%2C+Charles+A%3BFranz%2C+Heather+B%3BManning%2C+H+L%3BTrainer%2C+Melissa+G%3BWong%2C+Mike+H%3BBrunner%2C+Anna+E%3BAtreya%2C+S+K%3BPepin%2C+R+O%3BJones%2C+J+H%3BOwen%2C+T+C%3BMahaffy%2C+Paul+R%3BAnonymous&rft.aulast=Conrad&rft.aufirst=Pamela&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Characterizing the phyllosilicates and amorphous phases found by MSL using laboratory XRD and EGA measurements of natural and synthetic materials AN - 1700097682; 2015-072360 AB - The Curiosity Rover landed on the Peace Vallis alluvial fan in Gale crater on August 5, 2012. A primary mission science objective is to search for past habitable environments, and, in particular, to assess the role of past water. Identifying the minerals and mineraloids that result from aqueous alteration at Gale crater is essential for understanding past aqueous processes at the MSL landing site and hence for interpreting the site's potential habitability. X-ray diffraction (XRD) data from the CheMin instrument and evolved gas analyses (EGA) from the SAM instrument have helped the MSL science team identify phases that resulted from aqueous processes: phyllosilicates and amorphous phases were measure in two drill samples (John Klein and Cumberland) obtained from the Sheepbed Member, Yellowknife Bay Fm., which is believed to represent a fluvial-lacustrine environment. A third set of analyses was obtained from scoop samples from the Rocknest sand shadow. Chemical data from the APXS instrument have helped constrain the chemical compositions of these secondary phases and suggest that the phyllosilicate component is Mg-enriched and the amorphous component is Fe-enriched, relatively Si-poor, and S- and H-bearing. To refine the phyllosilicate and amorphous components in the samples measured by MSL, we measured XRD and EGA data for a variety of relevant natural terrestrial phyllosilicates and synthetic mineraloids in laboratory testbeds of the CheMin and SAM instruments. Specifically, Mg-saturated smectites and vermiculites were measured with XRD at low relative humidity to understand the behavior of the 001 reflections under Mars-like conditions. Our laboratory XRD measurements suggest that interlayer cation composition affects the hydration state of swelling clays at low RH and, thus, the 001 peak positions. XRD patterns of synthetic amorphous materials, including allophane, ferrihydrite, and hisingerite were used in full-pattern fitting (FULLPAT) models to help determine the types and abundances of amorphous phases in the martian rocks and sand shadow. These models suggest that the rocks and sand shadow are composed of approximately 30% amorphous phases. Sulfate-adsorbed allophane and ferrihydrite were measured by EGA to further understand the speciation of the sulfur present in the amorphous component. These data indicate that sulfate adsorbed onto the surfaces of amorphous phases could explain a portion of the SO2 evolution in the Rocknest SAM data. The additional constraints placed on the mineralogy and chemistry of the aqueous alteration phases through our laboratory measurements can help us better understand the nature of the fluids that affected the different samples and devise a history of aqueous alteration for the Sheepbed Member of the Yellowknife Bay Fm. at Gale crater. JF - American Geophysical Union Fall Meeting AU - Rampe, Elizabeth B AU - Morris, Richard V AU - Chipera, Steve AU - Bish, D L AU - Bristow, Tomas F AU - Archer, P Doug AU - Blake, David AU - Achilles, Cherie N AU - Ming, Douglas W AU - Vaniman, D AU - Crisp, Joy A AU - des Marais, David J AU - Downs, R AU - Farmer, J D AU - Morookian, John Michael AU - Morrison, Shaunna AU - Sarrazin, Philippe AU - Spanovich, Nicole AU - Treiman, Allan H AU - Yen, Albert S AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P21D EP - 08 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700097682?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+the+phyllosilicates+and+amorphous+phases+found+by+MSL+using+laboratory+XRD+and+EGA+measurements+of+natural+and+synthetic+materials&rft.au=Rampe%2C+Elizabeth+B%3BMorris%2C+Richard+V%3BChipera%2C+Steve%3BBish%2C+D+L%3BBristow%2C+Tomas+F%3BArcher%2C+P+Doug%3BBlake%2C+David%3BAchilles%2C+Cherie+N%3BMing%2C+Douglas+W%3BVaniman%2C+D%3BCrisp%2C+Joy+A%3Bdes+Marais%2C+David+J%3BDowns%2C+R%3BFarmer%2C+J+D%3BMorookian%2C+John+Michael%3BMorrison%2C+Shaunna%3BSarrazin%2C+Philippe%3BSpanovich%2C+Nicole%3BTreiman%2C+Allan+H%3BYen%2C+Albert+S%3BAnonymous&rft.aulast=Rampe&rft.aufirst=Elizabeth&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Pits and gullies on Vesta; potential insights from terrestrial analogs AN - 1700097640; 2015-072519 AB - Arguably the most surprising discovery of the Dawn mission during its observations of Vesta were the pitted terrain, low albedo regions, and hydrogen abundances. The presence of pitted terrain at the floors of craters on Vesta has been ascribed to the release of volatiles during impact, following the discovery of similar features on Mars where they are interpreted as volatile-rich impact melt deposits. The numerous dark regions and the H abundance have been ascribed to the presence of infall material resembling CM chondrites. CM chondrite clasts are relatively common in brecciated meteorites, including the HED meteorites that are presumed to have come from Vesta (or Vesta fragments), and contain up to about 10 vol% water. On the walls of craters associated with the pitted terrain in craters, but also observed outside craters, are features resembling gullies. The nature of these features, the amount of fluids required, and, especially, the relationship between the pits and gully-like features is unclear. Pit-like structures are commonly observed at terrestrial impact craters (hydrothermal pipes) and in volcanic fields (phreatic craters) in which water was present during the active phases of these processes. They are usually well-studied and offer a range of "ground truths" which might help us understand the features on Vesta. The number, morphology, and locations of the features provide temporal information on their histories. The number, size and distribution of boulders around the features, provides information on energetics and water content. We expect such structures to be present in water-bearing C and X asteroids, where the water in endogenous, and S asteroids where, like Vesta, the water is exogenous. Such features, if present, were generally obscured by regolith on Eros, but a search in regolith-poor areas might be worthwhile. In summary, we suggest that new insights into volatile behavior on near-Earth asteroids, with its relevance to geological evolution, astrobiology, and space resources, will be possible through the study of terrestrial analogs. JF - American Geophysical Union Fall Meeting AU - Sears, Derek W AU - Tornabene, L L AU - Osinski, G R AU - Hughes, S S AU - Heldmann, Jennifer L AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P51E EP - 1782 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700097640?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Pits+and+gullies+on+Vesta%3B+potential+insights+from+terrestrial+analogs&rft.au=Sears%2C+Derek+W%3BTornabene%2C+L+L%3BOsinski%2C+G+R%3BHughes%2C+S+S%3BHeldmann%2C+Jennifer+L%3BAnonymous&rft.aulast=Sears&rft.aufirst=Derek&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Phobos mineralogical interpretation from 0.25 to 4.0 mu m AN - 1700097604; 2015-072514 AB - On 24 February 2007, the OSIRIS-WAC and NAC instrument onboard the Rosetta spacecraft observed Phobos. We present a disk-integrated compositional analysis of the Martian satellite. The area studied in this work covers from 126 degrees W to 286 degrees W in longitude and from 86.8 degrees N to 90 degrees S in latitude and it was observed with a phase angle ranging from 18.87 degrees to 18.95 degrees . Previous investigations of the composition of the surface of Phobos made use of spectral matching. In our study we undertake spectral modeling of the surface of Phobos albedo using a radiative transfer code based on the slab approximation. The code calculates the albedo of a powdered surface from the optical constants of candidate materials. After scaling the OSIRIS data to match a previously obtained visible albedo measurement, we provide spectral modeling of the surface of Phobos in the wavelength range between 0.25 and 4.0 mu m, using OSIRIS and the Rivkin et al. (Rivkin, A. S. et al., 2002, Icarus, 156, 64) IRTF results. We provide two models, the first one fitting better the OSIRIS data and yielding a composition that includes organic carbonaceous material, serpentine, olivine, and basalt glass. The presence of organic material makes this model questionable as it produces a strong absorption at 3.0 mu m not seen in previously obtained Phobos data. Our second model was fit to the OSIRIS data extended in wavelength to include the Rivkin et al. (2002) data. We modeled the OSIRIS data using Tagish Lake meteorite optical constants, and our best fitting model in this case consists of Tagish Lake and magnesium-rich pyroxene glass. The overall shape of the second model spectrum fits over a large wavelength range and shows that both curvature and albedo level match the OSIRIS and Rivkin et al. (2002) data much better than the first model did. While both models contain complex organic molecular material, Tagish Lake seems to have a composition and/or molecular structure that yields a better fit, particularly in view of the fact that it is a naturally occurring material rather than a synthetic one as the tholin. This gives weight to this model making it our most promising fit for Phobos. Since Tagish Lake is commonly used as a spectral analog for D-type asteroids, this provides additional support for compositional similarities of Phobos and D-type asteroids. All these factors are consistent with Phobos being a captured D-type asteroid as previously suggested by Rivkin et al. (2002) and Pajola et al. (Pajola, M. et al., 2012, MNRAS, 427, 3230) who presented an updated scenario based on the collisional capture mechanism of Phobos. JF - American Geophysical Union Fall Meeting AU - Pajola, Maurizio AU - Lazzarin, Monica AU - Dalle Ore, Cristina AU - Cruikshank, Dale P AU - Roush, Ted L AU - Magrin, Sara AU - Bertini, Ivano AU - La Forgia, Fiorangela AU - Barbieri, Cesare AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P51E EP - 1777 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700097604?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Phobos+mineralogical+interpretation+from+0.25+to+4.0+mu+m&rft.au=Pajola%2C+Maurizio%3BLazzarin%2C+Monica%3BDalle+Ore%2C+Cristina%3BCruikshank%2C+Dale+P%3BRoush%2C+Ted+L%3BMagrin%2C+Sara%3BBertini%2C+Ivano%3BLa+Forgia%2C+Fiorangela%3BBarbieri%2C+Cesare%3BAnonymous&rft.aulast=Pajola&rft.aufirst=Maurizio&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Rotation of a Moonless Earth AN - 1700097552; 2015-072447 AB - We numerically explore the obliquity (axial tilt) variations of a hypothetical moonless Earth. Previous work has shown that the Earth's Moon stabilizes Earth's obliquity such that it remains within a narrow range, between 22.1 degrees and 24.5 degrees . Without lunar influence, a frequency-map analysis by Laskar et al. (Laskar, J., Joutel, F., Robutel, P. [1993]. Nature 361, 615-617) showed that the obliquity could vary between 0 degrees and 85 degrees . This has left an impression in the astrobiology community that a large moon is necessary to maintain a habitable climate on an Earth-like planet. Using a modified version of the orbital integrator mercury, we calculate the obliquity evolution for moonless Earths with various initial conditions for up to 4 Gyr. We find that while obliquity varies significantly more than that of the actual Earth over 100,000 year timescales, the obliquity remains within a constrained range, typically 20-25 degrees in extent, for timescales of hundreds of millions of years. None of our Solar System integrations in which planetary orbits behave in a typical manner show obliquity accessing more than 65% of the full range allowed by frequency-map analysis. The obliquities of moonless Earths that rotate in the retrograde direction are more stable than those of prograde rotators. The total obliquity range explored for moonless Earths with rotation periods shorter than 12 h is much less than that for slower-rotating moonless Earths. A large moon thus does not seem to be needed to stabilize the obliquity of an Earth-like planet on timescales relevant to the development of advanced life. JF - American Geophysical Union Fall Meeting AU - Lissauer, J J AU - Barnes, J W AU - Chambers, J AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P43E EP - 05 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700097552?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Rotation+of+a+Moonless+Earth&rft.au=Lissauer%2C+J+J%3BBarnes%2C+J+W%3BChambers%2C+J%3BAnonymous&rft.aulast=Lissauer&rft.aufirst=J&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Observations of ejecta clouds produced by impacts onto Saturn's rings AN - 1700097544; 2015-072361 AB - We report the first observations of impact ejecta clouds at Saturn's rings by the Cassini spacecraft, making Saturn's rings the second location outside the Earth-Moon system (after Jupiter's atmosphere) at which impacts have been observed in process, and the first with sufficient numbers for population statistics. There is very little previous knowledge of meteoroids in the outer solar system, and no direct knowledge of particles in the size range probed by this work (larger than dust but smaller than moons). The observed dusty clouds are due to impacts onto the rings that occurred between 1 and 50 hours before the clouds were observed. The largest of these clouds was observed twice; its brightness and cant angle evolved in a manner consistent with this hypothesis. Several arguments suggest that these clouds cannot be due to the primary impact of one solid meteoroid onto the rings, but rather to the impact of a compact stream of Saturn-orbiting material derived from previous breakup of a meteoroid. The responsible interplanetary meteoroids were initially between 1 cm and several meters in size, and their influx rate is consistent with the sparse prior knowledge of smaller meteoroids in the outer solar system. JF - American Geophysical Union Fall Meeting AU - Tiscareno, M S AU - Mitchell, C J AU - Murray, C AU - di Nino, D AU - Hedman, M M AU - Schmidt, J AU - Burns, J A AU - Cuzzi, J N AU - Porco, C AU - Beurle, K AU - Evans, M W AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P21E EP - 02 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700097544?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Observations+of+ejecta+clouds+produced+by+impacts+onto+Saturn%27s+rings&rft.au=Tiscareno%2C+M+S%3BMitchell%2C+C+J%3BMurray%2C+C%3Bdi+Nino%2C+D%3BHedman%2C+M+M%3BSchmidt%2C+J%3BBurns%2C+J+A%3BCuzzi%2C+J+N%3BPorco%2C+C%3BBeurle%2C+K%3BEvans%2C+M+W%3BAnonymous&rft.aulast=Tiscareno&rft.aufirst=M&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Simulating fine grained alluvial fan sedimentation on Mars AN - 1700097494; 2015-072498 AB - The alluvial fans on Mars date to as late as the Hesperian Period and may be representative of the last major episode of widespread fluvial modification to the red planet's surface. These fans lie within enclosed crater basins, and are characterized by their large size (tens of km in length) and gentle gradient (less than 1-3 degrees ). The fans generally feature a network of channel distributaries floored with coarser sediment and what we have interpreted to be fine grained overbank deposits that comprise the bulk of the fan material. We have developed a landform evolution model based on an approach to simulate the growth of these fans in order to answer several questions about their formation, including: (1) what are the characteristics of water discharge (flow magnitude and duration) and sediment supply (quantity and grain size); and (2) what are the associated implications for the responsible climatic environment (e.g. amount and frequency of precipitation sourcing the fans). The model combines discharge and sediment deposition with channel avulsion and abandonment, allowing for an analysis of both the micro and macro scale processes concerning fan formation. Water and sediment is routed through a distributary network that can branch, recombine, and avulse. The model simulates deposition of both coarse-grained bedload and a fine-grained suspended load material that can be deposited overbank during flood events. The model records the stratigraphy of the deposited material in terms of the relative proportions of coarse and fine-grained sediment. Using measures such as channel width, relative proportions of channel versus overbank deposited sediment, and frequency of channel branching, output is statistically compared with digital elevation models that have been produced from high-resolution CTX and HiRISE stereo pairs. Initial results suggest fans formed from hundreds of flow events over many thousands of years. Fan formation processes appear to be similar to those active in terrestrial fans in northern Chile's Atacama Desert. Additional model runs will simulate fan development under different patterns of precipitation (uniform over the fan versus an orographic pattern of greater precipitation on upper crater walls) and variations in sediment size distribution. JF - American Geophysical Union Fall Meeting AU - Morgan, A M AU - Howard, A D AU - Moore, Jeff M AU - Beyer, Ross A AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P51D EP - 1756 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700097494?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Simulating+fine+grained+alluvial+fan+sedimentation+on+Mars&rft.au=Morgan%2C+A+M%3BHoward%2C+A+D%3BMoore%2C+Jeff+M%3BBeyer%2C+Ross+A%3BAnonymous&rft.aulast=Morgan&rft.aufirst=A&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Searching for lunar tidal deformations with LRO/LOLA AN - 1700097489; 2015-072487 AB - The Moon exhibits a tidal gravity field signature due to the difference in the gravitational force of the Earth and Sun at the Moon's surface and its center of mass. The Moon responds elastically by deforming into an ellipsoid that is slightly squashed along the limb and bulged on the near and far sides, with a maximum radial displacement of approximately 50 cm (with respect to a perfect sphere) near the sub-Earth point and its antipode. Variations in the Earth-Moon distance and geometric librations cause the bulge pattern to fluctuate in amplitude and shift in position on the surface, so that the surface height at any given geographic location moves up and down with a dominant period of 27.555 days and an amplitude of up to approximately 10 cm. Studying the detailed shape and behavior of these deformations can yield important information on the Moon's physical properties, such as the density distribution and bulk elastic parameters. After approximately 4.5 years of operation, the Lunar Orbiter Laser Altimeter (LOLA) aboard the Lunar Reconnaissance Orbiter (LRO) has collected over 6 billion measurements of surface height with a vertical precision of approximately 10 cm and an accuracy of approximately 1 m. The LOLA dataset contains more than 10 million crossovers, instances when two ground-tracks intersect. Each crossover represents the measurement of surface height at one location and at two different times, thereby providing a way of measuring tidal deformations. Here we present preliminary results of efforts to detect and constrain lunar tidal deformations using a sample of the highest-quality LOLA crossovers. JF - American Geophysical Union Fall Meeting AU - Barker, M K AU - Mazarico, E AU - Neumann, Gregory A AU - Zuber, M T AU - Smith, David E AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P51C EP - 1745 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700097489?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+lunar+tidal+deformations+with+LRO%2FLOLA&rft.au=Barker%2C+M+K%3BMazarico%2C+E%3BNeumann%2C+Gregory+A%3BZuber%2C+M+T%3BSmith%2C+David+E%3BAnonymous&rft.aulast=Barker&rft.aufirst=M&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Design and testing of a linear ion trap for the Mars organic molecule analyzer (MOMA) investigation on the 2018 ExoMars rover AN - 1700097448; 2015-072534 AB - The 2018 ExoMars rover mission includes the Mars Organic Molecule Analyzer (MOMA) investigation. MOMA will examine the chemical composition of samples acquired from depths of up to two meters below the martian surface, where organics may be protected from radiative and oxidative degradation. When combined with the complement of instruments in the rover's Pasteur Payload, MOMA has the potential to reveal the presence of a wide range of organics preserved in a variety of mineralogical environments, and to begin to understand the structural character and potential origin of those compounds. MOMA includes an ion trap mass spectrometer (ITMS) that is designed to analyze molecular composition of (i) gas evolved from pyrolyzed powder samples and separated on a gas chromatograph and (ii) ions directly desorbed from solid samples at Mars ambient pressure using a pulsed laser and a fast-valve capillary ion inlet system. This "dual source" approach gives MOMA unprecedented breadth of detection over a wide range of molecular weights and volatilities. Analysis of nonvolatile, higher-molecular weight organics such as carboxylic acids and peptides even in the presence of significant perchlorate concentrations is enabled by the extremely short ( approximately 1 ns) pulses of the desorption laser. Use of the ion trap's tandem mass spectrometry mode permits selective focus on key species for isolation and controlled fragmentation, providing structural analysis capabilities. The flight-like engineering test unit (ETU) of the ITMS, now under construction, will be used to verify breadboard performance with high fidelity, while simultaneously supporting the development of analytical scripts and spectral libraries using synthetic and natural Mars analog samples guided by current results from MSL. ETU campaign data will strongly advise the specifics of the calibration applied to the MOMA flight model as well as the science operational procedures during the mission. JF - American Geophysical Union Fall Meeting AU - Brinckerhoff, William B AU - van Amerom, Friso H AU - Danell, R AU - Pinnick, Veronica T AU - Arevalo, R D AU - Li, Xiang AU - Hovmand, Lars AU - Siljestrom, Sandra AU - Mahaffy, Paul R AU - Goetz, W AU - Goesmann, F AU - Steininger, H AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P51G EP - 1799 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700097448?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Design+and+testing+of+a+linear+ion+trap+for+the+Mars+organic+molecule+analyzer+%28MOMA%29+investigation+on+the+2018+ExoMars+rover&rft.au=Brinckerhoff%2C+William+B%3Bvan+Amerom%2C+Friso+H%3BDanell%2C+R%3BPinnick%2C+Veronica+T%3BArevalo%2C+R+D%3BLi%2C+Xiang%3BHovmand%2C+Lars%3BSiljestrom%2C+Sandra%3BMahaffy%2C+Paul+R%3BGoetz%2C+W%3BGoesmann%2C+F%3BSteininger%2C+H%3BAnonymous&rft.aulast=Brinckerhoff&rft.aufirst=William&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Lipid biomarker production and preservation in acidic ecosystems; relevance to early Earth and Mars AN - 1700096203; 2015-072523 AB - Compared to relatively benign carbonate buffered marine environments, terrestrial Archean and Paleoproterozoic life was forced to cope with a broader range of pH values. In particular, acidic terrestrial ecosystems arose from the oxidation of reduced species in hydrothermal settings and crustal reservoirs of metal sulfides, creating acid sulfate conditions. While oxidation of reduced species is facilitated by reactions with molecular oxygen, acidic conditions also arose in Archean hydrothermal systems before the rise of oxygen (Van Kranendonk, 2006), expanding the range of time over which acidophiles could have existed on the early Earth. Acidic terrestrial habitats would have included acidic hydrothermal springs, acid sulfate soils, and possibly lakes and streams lacking substantial buffering capacity with sources of acidity in their catchments. Although acidic hot springs are considered extreme environments on Earth, robust and diverse microbial communities thrive in these habitats. Such acidophiles are found across all three domains of life and include both phototrophic and chemotrophic members. In this presentation, we examine hopanes and sterols that are characteristic of microbial communities living in acidic hydrothermal environments. Moreover we discuss taphonomic processes governing the capture and preservation of these biosignatures in acid environments. In particular, we discuss the production and early preservation of hopanoids and sterols in the following geological/mineralogical settings: 1) rapid entombment of microbes and organic matter by predominantly fine-grained silica; 2) rapid burial of organic matter by clay-rich, silica poor sediments; 3) and the survival of organics in iron oxide and sulfate rich sediments. We discovered and isolated an acid-tolerant purple non-sulfur anoxygenic phototroph from Lassen Volcanic National Park that synthesizes 3 methyl-bacteriohopanepolyols. These compounds were previously thought to be exclusively made by methanotrophic and acetic acid bacteria. We also documented the production of unique patterns of abundance of C27, C28, and C29 sterols by the early diverging red and green algae Cyanidiales and Chlorella in the acidic outflow channel of Nymph Creek in Yellowstone National Park. Hydrothermal processes associated with volcanism are common features of ancient habitable environments on Earth and have been inferred for ancient Mars as well. Understanding the preservation of organics in modern acidic hydrothermal settings thus helps inform the detection of these compounds in the ancient sedimentary record on Earth, and perhaps Mars. JF - American Geophysical Union Fall Meeting AU - Jahnke, Linda L AU - Parenteau, Mary N AU - Harris, R AU - Bristow, Tomas F AU - Farmer, J D AU - des Marais, David J AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P51F EP - 1787 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700096203?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Lipid+biomarker+production+and+preservation+in+acidic+ecosystems%3B+relevance+to+early+Earth+and+Mars&rft.au=Jahnke%2C+Linda+L%3BParenteau%2C+Mary+N%3BHarris%2C+R%3BBristow%2C+Tomas+F%3BFarmer%2C+J+D%3Bdes+Marais%2C+David+J%3BAnonymous&rft.aulast=Jahnke&rft.aufirst=Linda&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - How to search for life by the detection of biochemistry AN - 1700096198; 2015-072458 AB - We consider how to search for life by the detection of biochemistry in three relevance case: 1) in samples returned to Earth, 2) In situ in the organic rich plume of Enceladus, and 3) On Mars, following the discovery of organics. A search for organic biomarkers can address several questions including: 1) Evidence for present or past life, 2) Evidence for a second genesis of life, 3) Hazard assessment for human explorers and sample return and 4) Detection of bioload from Earth. Some useful analogs for the search for organic biomarkers on other worlds include 1) Ancient Earth sediment record, an example of a poorly preserved ancient biochemistry, 2) Modern environments including anoxic Antarctic sediments 3)Extreme cold desert surfaces in the High Antarctic Dry Valleys 4) Extremely dry soils such as the Atacama Desert 5) Evaporites. Sample preparation is a key issue, often unappreciated in past. Illustrated by the interference of perchlorate with organic detection on Viking and SAM. JF - American Geophysical Union Fall Meeting AU - McKay, C P AU - Davila, A AU - Sun, Henry J AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P44B EP - 01 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700096198?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+to+search+for+life+by+the+detection+of+biochemistry&rft.au=McKay%2C+C+P%3BDavila%2C+A%3BSun%2C+Henry+J%3BAnonymous&rft.aulast=McKay&rft.aufirst=C&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Detecting low-contrast features in the cosmic ray albedo proton yield map of the Moon AN - 1700096150; 2015-072515 AB - High energy cosmic rays constantly bombard the lunar regolith, producing (via nuclear evaporation) secondary "albedo" or "splash" particles like protons and neutrons, some of which escape back to space. Lunar Prospector and the Lunar Reconnaissance Orbiter (LRO), have shown that the energy distribution of albedo neutrons is modulated by the elemental composition of the lunar regolith], and by ice deposits in permanently shadowed polar craters. Here we investigate an analogous phenomenon with high energy lunar albedo protons. Using the CRaTER instrument (Cosmic Ray Telescope for the Effects of Radiation) on LRO, we measure albedo protons (60 to 150 MeV) to construct a cosmic ray albedo proton map of the Moon. Our current map is a significant improvement over the proof-of-concept map of Wilson et al. In addition to using more numerous minimum ionizing GCR protons for normalization, we filter out all solar particle enhancement periods and make use of all six of CRaTER's detectors to reduce contamination from spurious non-proton events in the data stream. The average yield of albedo protons from the maria is 0.8%+ or -0.4% higher than the yield from the highlands. In addition there appear to be localized peaks in the albedo proton yield that are co-located with peaks in trace elemental abundances as measured by the Lunar Prospector Gamma Ray Spectrometer. More data may reveal subtler proton yield variations correlated with latitude, time of day, or the locations of permanently shadowed craters, due to the presence of water frost. Given that the most obvious features in the map have a proton yield only 2sigma above average, the search for more subtle regions of enhancement or reduction in proton yield will require precise corrections for small but systematic effects of time and spacecraft altitude on the apparent proton yield. We will show the effects of these trends as well as the latest version of the albedo proton map. JF - American Geophysical Union Fall Meeting AU - Wilson, Jody K AU - Schwadron, N AU - Spence, Harlan AU - Smith, Sonya S AU - Golightly, M J AU - Case, Anthony W AU - Stubbs, Timothy J AU - Blake, J Bernard AU - Kasper, J C AU - Looper, Mark D AU - Mazur, Joseph E AU - Townsend, L W AU - Zeitlin, Cary J AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P51E EP - 1778 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700096150?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Detecting+low-contrast+features+in+the+cosmic+ray+albedo+proton+yield+map+of+the+Moon&rft.au=Wilson%2C+Jody+K%3BSchwadron%2C+N%3BSpence%2C+Harlan%3BSmith%2C+Sonya+S%3BGolightly%2C+M+J%3BCase%2C+Anthony+W%3BStubbs%2C+Timothy+J%3BBlake%2C+J+Bernard%3BKasper%2C+J+C%3BLooper%2C+Mark+D%3BMazur%2C+Joseph+E%3BTownsend%2C+L+W%3BZeitlin%2C+Cary+J%3BAnonymous&rft.aulast=Wilson&rft.aufirst=Jody&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Spillage of polar crater resources onto adjacent terrains AN - 1700096113; 2015-072510 AB - We present an investigation of the release and transport of polar crater volatiles onto topside regions adjacent to 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 demonstrate that such processes can transport cold-trapped volatiles to lower latitudes, possibly accounting for a portion of the mid-latitude water and OH veneer observed in the IR (the 3 micron absorption feature). We also demonstrate that some fraction of these volatiles can migrate from crater floors onto regions directly adjacent to the polar craters, and that the topside terrains should contain a sampling of the material originating within the crater itself. It is concluded that to derive volatile content in the crater, it may not be necessary to explore the cold, non-illuminated crater floors. Instead, the nature of the crater volatiles may 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 exploration of crater resources significantly easier, since an analysis may not require direct entry into the very harsh polar crater environment. JF - American Geophysical Union Fall Meeting AU - Farrell, William M AU - Zimmerman, Michael I AU - Hurley, Dana AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P51E EP - 1772 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700096113?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Spillage+of+polar+crater+resources+onto+adjacent+terrains&rft.au=Farrell%2C+William+M%3BZimmerman%2C+Michael+I%3BHurley%2C+Dana%3BAnonymous&rft.aulast=Farrell&rft.aufirst=William&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - In situ, spatially resolved biosignature detection at the microbial scale AN - 1700096059; 2015-072462 AB - Whether life has ever existed beyond Earth is one of the great human questions. The Science Definition Team (SDT) for the proposed NASA Mars 2020 rover mission recently announced a suggested approach for NASA to "demonstrate significant technical progress towards the future return of scientifically selected, well-documented samples to Earth" in part "to investigate whether Mars was ever inhabited by microbial life." The SDT further recommended a per-sample volume of 8 cm (super 3) (e.g., a core with a diameter of 1 cm and length of 10 cm). Such samples would be the first available for scientific inquiry with the potential to definitively answer the fundamental question of astrobiology, and their small volume would necessitate analysis with non- or minimally destructive techniques. Potential biosignatures include "chemical, isotopic, mineralogical, and morphological features that can be created by life and also appear to be inconsistent with nonbiological processes". Guidelines for biosignature detection in extraterrestrial samples derive in part from the search for evidence of life in the most ancient sedimentary rocks on Earth, wherein the most compelling case for biogenicity is made when these "chemical, isotopic, mineralogical, and morphological features" occur in association. Sedimentary rocks deposited on Earth prior to approximately 3.5 billion years ago (i.e., when persistent surface water likely supported habitable environments on Mars) have only very rarely escaped severe alteration by metamorphism and metasomatism. Understanding how these processes have operated on Earth through strategic interrogation of biosignature alteration records in (meta)sedimentary rocks is thus a critical task in the search for extraterrestrial life. Here we present techniques for and results of in situ, spatially resolved, non- or minimally destructive detection of morphological, elemental, molecular, and light stable isotopic biosignatures, as well as records of alteration, in Precambrian sedimentary rocks from Earth in the context of the eventual analysis of samples returned from Mars. Sample acquisition and preparation, morphological analysis by conventional light, confocal laser, and electron microscopy, elemental analysis by energy and wavelength dispersive spectroscopy, molecular analysis by laser Raman microscopy, carbon isotope analysis of organic matter and carbonate minerals, and multiple sulfur isotope analysis of pyrite with secondary ion mass spectrometry will be discussed. New and recently published results from the application of these methods towards detection of the signatures of life, environment, and alteration history in rocks containing putative and bona fide microfossils ranging in age from 0.6 to 3.5 billion years, and in rocks of similar age lacking morphological biosignatures, as well as our current understanding of key challenges and opportunities for future research will be reviewed. JF - American Geophysical Union Fall Meeting AU - Williford, Kenneth H AU - Eigenbrode, Jennifer L AU - Hallmann, C AU - Kitajima, K AU - Kozdon, R AU - Summons, R E AU - Kudryavstev, A AU - Lepot, Kevin AU - Schopf, J AU - Spicuzza, M AU - Sugitani, K AU - Ushikubo, T AU - van Kranendonk, M AU - Valley, J W AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P44B EP - 05 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700096059?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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%2C+spatially+resolved+biosignature+detection+at+the+microbial+scale&rft.au=Williford%2C+Kenneth+H%3BEigenbrode%2C+Jennifer+L%3BHallmann%2C+C%3BKitajima%2C+K%3BKozdon%2C+R%3BSummons%2C+R+E%3BKudryavstev%2C+A%3BLepot%2C+Kevin%3BSchopf%2C+J%3BSpicuzza%2C+M%3BSugitani%2C+K%3BUshikubo%2C+T%3Bvan+Kranendonk%2C+M%3BValley%2C+J+W%3BAnonymous&rft.aulast=Williford&rft.aufirst=Kenneth&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Atmospheric circulation modeling of super Earths and terrestrial extrasolar planets using the SPARC/MITgcm AN - 1700096027; 2015-072344 AB - The field of exoplanets continues to be a booming field of research in astronomy and planetary science, with numerous ground-based (e.g., SuperWASP, HARPS-N and S) and space-based surveys (e.g., Kepler) that detect and characterize planets ranging from hot Jupiters, Jovian-sized planets orbiting less than 0.1 AU from their star, to super Earths and terrestrial exoplanets, planets that have masses equal to or less than 10 times that of Earth with a range of orbital distances. Atmospheric circulation modeling plays an important role in the characterization of these planets, helping to constrain observations that probe their atmospheres. These models have proven successful in understanding observations of transiting exoplanets (when the planet passes in front of the star along our line of sight) particularly when the planet is passing through secondary eclipse (when the planet's dayside is visible). In modeling super Earths and terrestrial exoplanets, we must consider not only planets with thick fluid envelopes, but also traditional terrestrial planets with solid surfaces and thinner atmospheres. To that end, we present results from studies investigating the atmospheric circulation of these classes of planets using the SPARC/MITgcm, a state-of-the-art model which couples the MIT General Circulation Model with a plane-parallel, two-stream, non-gray radiative transfer model. We will present results from two studies, the first focusing on the circulation of GJ 1214b, a super-Earth detected by the MEarth ground-based survey, and a second study which explores the circulation of terrestrial exoplanets orbiting M-dwarfs. JF - American Geophysical Union Fall Meeting AU - Kataria, T AU - Showman, A P AU - Haberle, R M AU - Marley, M S AU - Fortney, J J AU - Freedman, R S AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P21B EP - 1732 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700096027?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Atmospheric+circulation+modeling+of+super+Earths+and+terrestrial+extrasolar+planets+using+the+SPARC%2FMITgcm&rft.au=Kataria%2C+T%3BShowman%2C+A+P%3BHaberle%2C+R+M%3BMarley%2C+M+S%3BFortney%2C+J+J%3BFreedman%2C+R+S%3BAnonymous&rft.aulast=Kataria&rft.aufirst=T&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Modeling the impact ejected dust contribution to the lunar exosphere; results from experiments and ground truth from LADEE AN - 1700096000; 2015-072509 AB - A considerable body of evidence indicates the presence of lofted regolith dust above the lunar surface. These observations range from multiple in-situ and orbital horizon glow detections to direct measurement of dust motion on the surface, as by the Apollo 17 Lunar Ejecta and Meteorites (LEAM) experiment. Despite this evidence, the specific mechanisms responsible for the lofting of regolith are still actively debated. These include impact ejection, electrostatic lofting, effects of high energy radiation, UV/X-rays, and interplay with solar wind plasma. These processes are highly relevant to one of the two main scientific objectives of the Lunar Atmosphere and Dust Environment Explorer (LADEE) mission (due to launch September, 2013): to directly measure the lunar exospheric dust environment and its spatial and temporal variability towards the goal of better understanding the dust flux. Of all the proposed mechanisms taking place on the lunar surface, the only unequivocal ongoing process is impact cratering. Hypervelocity impact events, which mobilize and redistribute regolith across planetary surfaces, are arguably the most pervasive geologic process on rocky bodies. While many studies of dust lofting state that the impact flux rate is orders of magnitude too low to account for the lunar horizon glow phenomenon and discount its contribution, it is imperative to re-examine these assumptions in light of new data on impact ejecta, particularly from the contributions from mesoscale (impactor size on the order of grain size) and macroscale (impactor>grain size) cratering. This is in large part due to a previous lack of data, for while past studies have established a canonical ejecta model for main-stage ejection of sand targets from vertical impacts, only recent studies have been able to begin quantitatively probing the intricacies of the ejection process outside this main-stage, vertical regime. In particular, it is the high-speed early-time ejecta that will reach significant altitude above the surface and remain aloft ballistically for hours. In addition, ejecta dynamics in the transition regime between microcratering and macro scale events is not yet well understood. As such, there is no currently accepted encompassing model of impact ejecta delivery to the lunar exosphere. It is important to note that the work described here is not to duplicate or exclude other lofting mechanisms -- in reality, the lofting of dust is almost definitely a complex combination of processes -- but instead to provide essential constraints on the impact contribution. This study attempts to constrain the expected contributions from cratering to the lunar exosphere by assessing the ejecta "background" signal lofted above the surface and the effects of transient focused events (meteor showers) which can produce significant increases in ejecta. In particular, this work couples scaling of previous ejecta studies with Monte-Carlo and ballistics models and will present LADEE data analysis (particularly from the UVS and LDEX instruments) and interpretation in context of constraining the ejected mass distribution. These results are relevant to both our understanding of exospheric dust and for constraint of hazards for future human habitation. JF - American Geophysical Union Fall Meeting AU - Hermalyn, B AU - Colaprete, Anthony AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P51E EP - 1770 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700096000?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+the+impact+ejected+dust+contribution+to+the+lunar+exosphere%3B+results+from+experiments+and+ground+truth+from+LADEE&rft.au=Hermalyn%2C+B%3BColaprete%2C+Anthony%3BAnonymous&rft.aulast=Hermalyn&rft.aufirst=B&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Retrieving optical constants of glasses with variable iron abundance AN - 1700095952; 2015-072548 AB - Visible and Near Infrared (VNIR, approximately 0.4-2.5 mu m) spectroscopy is an important tool to explore the surface composition of objects in our Solar System. Using this technique different minerals have been recognized on the surfaces of solar system bodies. One of the principal products of extrusive volcanism and impact cratering is a glassy component, that can be abundant and thus significantly influence the spectral signature of the region investigated. Different types of glasses have been proposed and identified on the lunar surface and in star forming regions near young stellar objects. Here we report an initial effort of retrieving the optical constants of volcanic glasses formed in oxidizing terrestrial-like conditions. We also investigated how those calculations are affected by the grain size distribution. Bidirectional reflectance spectra, obtained with incidence and emission angles of 30 degrees and 0 degrees , respectively, were measured on powders of different grain sizes for four different glassy compositions in the VNIR. Hapke's model of the interaction of light with particulate surfaces was used to determine the imaginary index, k, at each wavelength by iteratively minimizing the difference between measured and calculated reflectance The basic approach to retrieving the optical constants was to use multiple grain sizes of the same sample and assume all grain sizes are compositionally equivalent. Unless independently known as a function of wavelength, an additional assumption must be made regarding the real index of refraction, n. The median size for each particle size separate was adopted for initially estimating k. Then, iterating the Hapke analysis results with a subtractive Kramers-Kronig analysis we were able to determine the wavelength dependence of n. For each composition we used the k-values estimated for all the grain sizes to calculate a mean k-value representing that composition. These values were then used to fit the original spectra by only varying the grain sizes. As a separate estimate of the k-values, we will use transmission measurements in the VNIR. Two slabs, with different thicknesses, will be measured for each composition. These data will be used to determine a k value and a comparison between k values obtained from the two different techniques will be discussed. JF - American Geophysical Union Fall Meeting AU - Carli, Cristian AU - Roush, Ted L AU - Capaccioni, Fabrizio AU - Baraldi, Andrea AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P51G EP - 1813 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700095952?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Retrieving+optical+constants+of+glasses+with+variable+iron+abundance&rft.au=Carli%2C+Cristian%3BRoush%2C+Ted+L%3BCapaccioni%2C+Fabrizio%3BBaraldi%2C+Andrea%3BAnonymous&rft.aulast=Carli&rft.aufirst=Cristian&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Sediment and soil profiles of Taylor and Wright valleys, Antarctica, as analogs for Mars AN - 1700095867; 2015-072403 AB - The Antarctic Dry Valleys are extremely cold and dry desert environments. They represent a unique analog for Martian surface development conditions. Chemistry and mineralogy of soils and sediments from Taylor and Wright Valleys were analyzed. Samples from selected lakes, ponds and nearby surface areas were collected in 1979/1980, from sediments below Lake Hoare in 1994/95, and from lake surfaces in 2005/06. Surface samples are from Lakes Brownworth, Vanda and Fryxell; sediment cores from Lake Hoare, Don Juan and Don Quixote ponds. Systematic analysis by INAA, XRD, VNIR and mid-infrared spectroscopy, and other methods is underway for all samples. Classical major element weathering / pedogenesis ratiosand major element weathering indices are applied to ADV as well as MER and MSL rocks and soils. The Chemical Index of Alteration (CIA) values were used to characterize weathering conditions in Antarctic soils of Barton Peninsula and for sediment layers in Antarctic drill cores. The CIAs of sediment layers in drill cores are largely explained by the CIAs of source materials and reflect little or isochemical weathering. At Barton Peninsula with a less arid environment than the ADVs, CIAs of soils generally exceed those of source rocks. In Figure 1, two of several ADV soil source rocks and three sets of ADV soil and sediment CIAs are compared to molar Al2O3/TiO2 ratios. ADV CIA data are clustered and, as expected, lower than those of Barton Penisula, indicating a lesser degree of weathering. Very low ADV soil CIAs indicate sulfur rich samples. Full geochemical analysis as proposed will provide good indicators of weathering where historical to contemporary alteration conditions are liquid water based. Investigating elemental relationships for analogs that can be applied to Mars elemental abundance data bases is therefore important to assist in evaluating the extent of water based alteration derived from indicators in the Martian surface. JF - American Geophysical Union Fall Meeting AU - Englert, P A AU - Bishop, J L AU - Patel, S AU - Koeberl, C AU - Gibson, E K AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P23B EP - 1778 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700095867?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Sediment+and+soil+profiles+of+Taylor+and+Wright+valleys%2C+Antarctica%2C+as+analogs+for+Mars&rft.au=Englert%2C+P+A%3BBishop%2C+J+L%3BPatel%2C+S%3BKoeberl%2C+C%3BGibson%2C+E+K%3BAnonymous&rft.aulast=Englert&rft.aufirst=P&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Seeking signs of life; the Mars 2020 rover AN - 1700095862; 2015-072459 AB - The National Aeronautics and Space Administration (NASA) announced plans to send a rover to Mars in the year 2020. With NASA's goals for Mars now focused on determining the habitability of environments and detecting signs of past life, this mission constitutes a logical next step in the exploration of Mars. The Mars 2020 Science Definition Team's (SDT) suggested science objectives of the mission are to: 1) explore an astrobiologically relevant ancient environment on Mars to decipher its geological processes and history, including the assessment of past habitability; 2) assess the biosignature preservation potential within the selected geological environment and search for potential biosignatures; 3) demonstrate significant technical progress towards the future return of scientifically selected, well-documented samples to Earth; and 4) provide an opportunity for contributed human exploration or space technology Program participation, compatible with the science payload and within the mission's payload capacity. Instruments designed for detecting signs of past life and caching samples on Mars are among those considered by the Science Definition Team as the highest priority for science on the 2020 rover. This presentation will detail NASA's response to the SDT's report (released July 2013) in formulating the 2020 mission. JF - American Geophysical Union Fall Meeting AU - Schulte, Mitchell D AU - Meyer, Michael A AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P44B EP - 02 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700095862?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Seeking+signs+of+life%3B+the+Mars+2020+rover&rft.au=Schulte%2C+Mitchell+D%3BMeyer%2C+Michael+A%3BAnonymous&rft.aulast=Schulte&rft.aufirst=Mitchell&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Regional source of the Earth-Moon progenitors AN - 1700095857; 2015-072393 AB - Different hypotheses including renegade planets, co-accretion, and precipitation have been proposed for the formation of the Earth-Moon system. However the Giant Impact hypothesis currently explains the most details concerning the mean density, isotopic variations, and high system angular momentum. Other studies have been performed that constrain various conditions of the impact. However, few have probed the initial orbital state of the impactor. E. J. Rivera [PhD Thesis Stony Brook Univ. 2002] began an investigation assuming, initially, a 5 inner planet Solar System where 2 planets experienced an encounter to produce the Earth-Moon system. We extend this investigation to include updated numerical techniques and a more general parameter space. An initial configuration of giant planets akin to the current Solar System is used to explore where the Earth-Moon progenitors likely originated. Future extensions of this work will also be discussed, including the consideration of a debris rich environment and alternate initial configurations of the giant planets commensurate with the Nice model. JF - American Geophysical Union Fall Meeting AU - Quarles, B AU - Lissauer, J J AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P23A EP - 1768 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700095857?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+source+of+the+Earth-Moon+progenitors&rft.au=Quarles%2C+B%3BLissauer%2C+J+J%3BAnonymous&rft.aulast=Quarles&rft.aufirst=B&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Saturn's satellites temperatures inferred from Cassini-VIMS reflectance spectra AN - 1700095849; 2015-072407 AB - The spectral position of the 3.6 mu m continuum peak measured on Cassini-VIMS reflectance spectra is used as a marker to infer the temperature of the regolith particles covering the surfaces of Saturn's icy satellites. Laboratory measurements indicate that for pure water ice the position of the 3.6 mu m peak is temperature-dependent: it shifts towards shorter wavelengths when the ice is cooled, moving from about 3.65 mu m at T=123 K to about 3.55 mu m at T=88 K. Starting from this experimental evidence we have used a 4th-degree polynomial fit between 3.2 and 3.8 mu m to measure the wavelength at which the peak occurs with the view toward using it as a marker to retrieve the temperatures of the satellites. This method is applied to about 240 disk-integrated observations of Saturn's regular satellites collected by VIMS between 2004 and 2011 with solar phase in the 20-40 degrees range, corresponding to late morning-early afternoon local times. From these observations we have retrieved average temperatures for Mimas ( approximately 88 K), Enceladus (170 K). For some satellites, like Tethys and Dione, for which observations on both leading and trailing hemispheres are available, we have measured average temperatures higher by about 10 K on the trailing than on the leading hemisphere. Temperatures measured by VIMS with this method are in general much higher than corresponding ones reported by CIRS: this is a consequence of the shallow skindepth (few microns) to which VIMS is sensitive while CIRS measures temperature at greater depth (few millimeters). Grain size and contaminants embedded in water ice may also play a role in the 3.6 mu m peak properties and these effects have yet to be investigated. Combining VIMS and CIRS measurements will allow us to better characterize the regolith physical properties and heat transport mechanisms. JF - American Geophysical Union Fall Meeting AU - Filacchione, Gianrico AU - Capaccioni, Fabrizio AU - Clark, R N AU - Ciarniello, Mauro AU - Brown, R H AU - Cruikshank, Dale P AU - Buratti, Bonnie J AU - Cuzzi, Jeffrey N AU - Spilker, Linda J AU - Nicholson, P D AU - Dalle Ore, Cristina AU - Cerroni, P AU - Tosi, Federico AU - Scipioni, Francesca AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P42A EP - 07 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700095849?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Saturn%27s+satellites+temperatures+inferred+from+Cassini-VIMS+reflectance+spectra&rft.au=Filacchione%2C+Gianrico%3BCapaccioni%2C+Fabrizio%3BClark%2C+R+N%3BCiarniello%2C+Mauro%3BBrown%2C+R+H%3BCruikshank%2C+Dale+P%3BBuratti%2C+Bonnie+J%3BCuzzi%2C+Jeffrey+N%3BSpilker%2C+Linda+J%3BNicholson%2C+P+D%3BDalle+Ore%2C+Cristina%3BCerroni%2C+P%3BTosi%2C+Federico%3BScipioni%2C+Francesca%3BAnonymous&rft.aulast=Filacchione&rft.aufirst=Gianrico&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Surface composition of the non-ice component on icy satellites and ring particles in the Saturn system AN - 1700095818; 2015-072408 AB - Saturn's icy satellites and ring particle surfaces have long been known to be composed mostly of frozen water. However, all surfaces show an absorption due to a non-water-ice component whose identity has not been well understood. In the near infrared, water ice has strong absorptions which limit detectability of other trace components. Similarly, at wavelengths less than about 0.18 microns, water is very absorbing. However, in the approximately 0.2 to approximately 1 micron range, water ice has low absorption and trace components are readily detected. Classical interpretations of the UV absorber and dark material on outer Solar System satellites have been varying amounts of tholins and carbon. However, tholins have spectral structure not seen in the icy spectra in the Saturn System. Many silicates also have UV spectral structure that reject them from contributing significantly to the observed spectral signatures. We have constructed a new UV spectrometer and a new environment chamber for studying the spectral properties of materials from 0.1 to 15 microns. In our survey of the spectral properties of materials so far, we find that small amounts of metallic iron and iron oxides in the icy surfaces are compatible with and can explain the UV, visible and near-infrared spectra of icy surfaces in the Saturn system (0.12 to 5.1 microns) using data from the Cassini UltraViolet Imaging Spectrograph (UVIS) and the Visual and Infrared Mapping Spectrometer (VIMS). The wide range of observed UV-NIR (0.1-5 micron) spectral signatures provide strong constraints on composition and grain size distribution, including grain sizes of the ice. Spectra of the Saturnian rings and icy satellites indicate they have a large range of ice grain sizes, from tens of microns to sub-micron. Sub-micron ice grains create unusual spectral properties, which are seen in the spectra of the rings and satellites of Saturn and on satellites further out in the Solar System. Clark et al. (2012, Icarus v218, p831) showed that VIMS spectra were explained by combinations of water ice, CO2, nano-sized grains of metallic iron and iron oxide and trace amounts of other compounds. The new UV lab data are providing further evidence for this interpretation and placing further constraints on grain size distributions and abundances of the components. JF - American Geophysical Union Fall Meeting AU - Clark, R N AU - Pearson, N AU - Perlman, Z S AU - Bradley, E T AU - Hendrix, A R AU - Cuzzi, Jeffrey N AU - Cruikshank, Dale P AU - Filacchione, Gianrico AU - Nicholson, P D AU - Hedman, M M AU - Brown, R H AU - Buratti, Bonnie J AU - Baines, K H AU - Sotin, Christophe AU - Nelson, R AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P42A EP - 08 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700095818?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Surface+composition+of+the+non-ice+component+on+icy+satellites+and+ring+particles+in+the+Saturn+system&rft.au=Clark%2C+R+N%3BPearson%2C+N%3BPerlman%2C+Z+S%3BBradley%2C+E+T%3BHendrix%2C+A+R%3BCuzzi%2C+Jeffrey+N%3BCruikshank%2C+Dale+P%3BFilacchione%2C+Gianrico%3BNicholson%2C+P+D%3BHedman%2C+M+M%3BBrown%2C+R+H%3BBuratti%2C+Bonnie+J%3BBaines%2C+K+H%3BSotin%2C+Christophe%3BNelson%2C+R%3BAnonymous&rft.aulast=Clark&rft.aufirst=R&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Exploration of volatile resources on the Moon with the Lunar Reconnaissance Orbiter (LRO) Lunar Exploration Neutron Detector (LEND) AN - 1700095800; 2015-072477 AB - The Lunar Exploration Neutron Detector (LEND) on the Lunar Reconnaissance Orbiter (LRO) is tasked with evaluating the quantity of hydrogen-bearing species within the upper meter of lunar regolith; investigating the presence and distribution of possible water-ice deposits in permanently shadowed regions (PSRs) near the poles; and determining the neutron contribution to total radiation dose at 50 km altitude above the Moon. To fulfill these goals, LEND has been mapping the distribution of thermal and epithermal neutron leakage flux since LRO entered its mapping orbit in September 2009. LRO moved to an elliptical orbit in December 2011, with 30 km periselene over the south pole and aposelene above the north pole. During the commissioning phase of the mission, July-September 2009, LEND obtained preliminary mapping of hydrogen/water deposits near the south pole that contributed to site-selection for the LCROSS impact. Global maps of neutron leakage flux measured with LEND show regional variation in thermal (energy 0.5 MeV) neutrons, and map epithermal neutron flux globally. Spatial resolution of the collimated detector is consistent with the design value of 5 km radius for half the detected lunar epithermal neutrons, with the remainder spatially diffuse. Statistically significant neutron-suppressed regions (NSRs) are not closely related to polar PSRs. Outside of the NSRs, hydrogen content increases directly with latitude at both poles. Thermal volatilization of water deposits may be responsible for increasing H concentrations nearer the poles because it is minimized at the low surface temperature of the poles. Significant neutron suppression regions (NSRs) relative to neighboring regions have been found in three large PSRs, Shoemaker and Cabeus in the south and Rozhdestvensky U in the north. Some small PSRs display excess neutron emission compared to the sunlit vicinity. On average, PSRs other than these three do not contain significantly more hydrogen than sunlit areas around them at the same latitude. Correlation between neutron suppression measured by LEND and illumination models for the Moon's polar regions suggests that insolation at the poles is an important factor in locally modulating hydrogen concentrations so that the highest concentrations of hydrogen appear to be on poleward-facing vs. equator-facing slopes. Epithermal neutron flux is slightly suppressed near the dawn terminator at near-equatorial latitude, with least suppression in local lunar mid-afternoon, implying a mobile population of hydrogen-bearing volatiles near the terminator that resides transiently in the regolith. The observed pattern supports hypothesized mineral hydration at the terminator in the form of H2O/OH. JF - American Geophysical Union Fall Meeting AU - Livengood, Timothy A AU - Boynton, W V AU - Sanin, A AU - Chin, Gordon AU - Litvak, M AU - McClanahan, Timothy P AU - Mitrofanov, I G AU - Sagdeev (Sagdeyev), R AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P51B EP - 1733 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700095800?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Exploration+of+volatile+resources+on+the+Moon+with+the+Lunar+Reconnaissance+Orbiter+%28LRO%29+Lunar+Exploration+Neutron+Detector+%28LEND%29&rft.au=Livengood%2C+Timothy+A%3BBoynton%2C+W+V%3BSanin%2C+A%3BChin%2C+Gordon%3BLitvak%2C+M%3BMcClanahan%2C+Timothy+P%3BMitrofanov%2C+I+G%3BSagdeev+%28Sagdeyev%29%2C+R%3BAnonymous&rft.aulast=Livengood&rft.aufirst=Timothy&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Mapping, characterizing, and interpreting mineral fabrics in mafic and ultramafic rock samples from Mars analog sites in samail, Oman using the ultra-compact imaging spectrometer (UCIS) AN - 1700095795; 2015-072541 AB - The Ultra-Compact Imaging Spectrometer (UCIS) is a hyperspectral instrument that enables an autonomous geologist, such as Mars 2020 or future missions of planetary exploration, to determine the mineral fabric and composition of rock samples. In this investigation, UCIS was used in a micro-imaging configuration in a laboratory environment to image the reflectance spectra of solid rock samples in the visible through shortwave-infrared wavelengths (0.50 to 2.50 mu m.) These data were used both to evaluate the capabilities of UCIS at the micro-scale and to analyze the spectral and mineralogical diversity of rocks from Mars-analog sites. The primary site of interest for this investigation was the Samail Ophiolite in Oman, where subsurface serpentinization and subsurface/subaerial carbonate deposition mimic some of the processes undergone by a Noachian Mars. Data were processed with the IDL-based image analysis software ENVI to generate detailed parameter maps distinguishing carbonate and serpentine minerals in varying modes of aqueous alteration. Close inspection of these maps yielded new spectral parameters, including the strength of absorption bands at 1.39, 1.90, 2.12, and 2.34 mu m, continuum shapes including slopes about 1.08 mu m, and feature shifting, which reliably identify and map serpentines and carbonates with distinct cation contents, water contents, and internal textures. These spectral parameters were combined to produce detailed color composite maps which informed our understanding of the relationships between phases and the extent of aqueous alteration in the Oman samples. Areal maps of mineral phases were used to quantitatively estimate the mineralogy of samples nondestructively, comparing to standard techniques such as x-ray diffraction and electron microprobe analysis, which require processing or destruction of rock samples. Our maps and measurements will provide a means for comparison between these techniques and the imaging spectroscopy performed by UCIS at the micro-scale. JF - American Geophysical Union Fall Meeting AU - Sanders, C B AU - Ehlmann, B L AU - Sellar, R AU - Van Gorp, Byron AU - Mouroulis, Pantazis AU - Blaney, Diana L AU - Green, R O AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P51G EP - 1806 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700095795?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Mapping%2C+characterizing%2C+and+interpreting+mineral+fabrics+in+mafic+and+ultramafic+rock+samples+from+Mars+analog+sites+in+samail%2C+Oman+using+the+ultra-compact+imaging+spectrometer+%28UCIS%29&rft.au=Sanders%2C+C+B%3BEhlmann%2C+B+L%3BSellar%2C+R%3BVan+Gorp%2C+Byron%3BMouroulis%2C+Pantazis%3BBlaney%2C+Diana+L%3BGreen%2C+R+O%3BAnonymous&rft.aulast=Sanders&rft.aufirst=C&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - The atlas of Vesta spectral parameters derived from the mapping spectrometer VIR onboard NASA/Dawn AN - 1700095761; 2015-072390 AB - From 2011 to 2012 the Visible and Infrared Mapping Spectrometer (VIR) onboard NASA/Dawn spacecraft has mapped the surface of Vesta from three different orbital heights, acquiring infrared and visible spectra from 0.2 to 5 microns, sampled in 864 channels with a spatial resolution up to about 150 m/pixel. From the large amount of spectra retrieved we have derived spectral parameters which can be combined to identify specific physical and compositional states. To start with, we have computed the band center and depth for band I and band II of pyroxenes. Pyroxene's band center I and II are commonly associated with a compositional variation. For example, orthopyroxene bands shift towards longer wavelengths with increasing amounts of iron, while clinopyroxene bands shift towards longer wavelengths with increasing calcium content. Band depths are related to scattering effects, associated to the abundance and the grain size of the absorber. Mapping these parameters on the surface allow to detect terrain units compositions and physical-state in their stratigraphic context. We have produced an atlas of digital maps, projected following the 15-quadrangle scheme commonly adopted for small sized planetary bodies. The digital maps have geospatial metadata and are available in GIS and other scientific programming language formats. A special imagery product has been produced, where the geomorphologic context from the Framing Camera, and the IAU nomenclature have been added to the mineralogic maps. This way we have both quantitative digital maps and print-ready maps. Digital maps are useful in statistical and geo-processing studies, while print-ready maps represent an easy to be consulted high-level data products. As with the atlas we are combining data acquired at very different observing geometries and in different phases of the mission, filtering has been necessary and an iterative process to project data produces results that are incrementally more consistent as we detect and exclude source of artifacts. At the moment of writing, the atlas has reached version 2.0, and most likely it will be updated by fall with an improved version. Moreover, the current number of 56 maps will increase as soon as new parameters, or a combination of them, will be added to the atlas. JF - American Geophysical Union Fall Meeting AU - Frigeri, Alessandro AU - DeSanctis, Maria Cristina AU - Ammannito, Eleonora AU - Tosi, Federico AU - Capria, M AU - Capaccioni, Fabrizio AU - Zambon, Francesca AU - Palomba, Ernesto AU - Magni, Gianfranco AU - Jaumann, Ralf AU - Raymond, Carol A AU - Russell, C T AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P23A EP - 1764 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700095761?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+atlas+of+Vesta+spectral+parameters+derived+from+the+mapping+spectrometer+VIR+onboard+NASA%2FDawn&rft.au=Frigeri%2C+Alessandro%3BDeSanctis%2C+Maria+Cristina%3BAmmannito%2C+Eleonora%3BTosi%2C+Federico%3BCapria%2C+M%3BCapaccioni%2C+Fabrizio%3BZambon%2C+Francesca%3BPalomba%2C+Ernesto%3BMagni%2C+Gianfranco%3BJaumann%2C+Ralf%3BRaymond%2C+Carol+A%3BRussell%2C+C+T%3BAnonymous&rft.aulast=Frigeri&rft.aufirst=Alessandro&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Understanding chemical trends in rock surface compositions as measured by ChemCam at Gale Crater, Mars; the signatures of rock coatings and rinds in LIBS laboratory data AN - 1700095714; 2015-072356 AB - On Earth, the physical and chemical breakdown of rocky materials occurs through interactions with the atmosphere, soil, biological processes, and aqueous solutions. These interactions produce alteration features on the surfaces of rocks, which record information about the amount and types of fluids with which the rock has interacted. Alteration features can also be indicators of and habitats for microbial life in terrestrial environments. Thus, detecting rock surface alteration is an important part of the NASA Curiosity rover mission to Gale crater, Mars. The ChemCam LIBS instrument onboard Curiosity is uniquely suited to detecting and analyzing rock surface alteration. The LIBS technique uses a pulsed laser microbeam (350-550 mu m) to ablate small amounts of material from a target to form a plasma. Because some material is removed during each laser pulse, it is possible to obtain a depth profile of chemical composition by performing multiple laser pulses on one location. Each pulse returns a spectrum that represents the composition at a specific depth, with each subsequent shot sampling the composition at a slightly greater depth. Laboratory measurements of basalts have shown that each LIBS shot removes at least approximately 0.3-0.82 mu m/shot, suggesting a removal of approximately 9-25 mu m of the surface for a standard analysis of 30 shots in rocks of similar hardness. Here we present laboratory LIBS experiments on well-characterized terrestrial rock samples with coatings and rinds with the goal of understanding the signatures of such features in LIBS data from Mars. The terrestrial sample set includes a basalt with a approximately 0-50 mu m thick Mn-rich rock varnish and a thin (<1 mm) weathering rind and a sandy dolomite with a approximately 500 mu m thick Ca-rich rind. Both samples were interrogated with hundreds of LIBS shots per location three times on the unweathered interior and three times on the exterior. Results from the basalt show that compositions similar to the bulk rock composition was reached by approximately 50-70 shots, with the observed chemical changes suggesting both the varnish and at least some rind were penetrated. Results from the sandy dolomite do not show as clear a change from rock exterior to interior as the basalt, but a general chemical trend from exterior to interior was observed in all three depth profiles. Laboratory results suggest that depth profiles of at least 100 shots are useful for clearly identifying coatings and rinds of similar thickness to those found on Earth. However, alteration trends may still be discernible with fewer shots. On Mars, the rock Bathurst Inlet (sol 55), which was shot only 30 times per location, shows what appears to be a near-surface gradient of several elements, most notably Li. Trends similar in nature (if not composition) to the terrestrial sandy dolomite sample were also observed on raised ridge materials such as McGrath (sub 5) (sol 234). Additional martian samples also show trends similar to coatings and rinds measured in the laboratory, suggesting that there may be surface alteration of some rocks in Gale crater. JF - American Geophysical Union Fall Meeting AU - Lanza, Nina L AU - Clegg, S M AU - Wiens, R C AU - Leveille, Richard J AU - Melikechi, N AU - Ollila, A AU - Tokar, R L AU - Newsom, H E AU - Blank, J G AU - Bridges, Nathan T AU - Clark, B AU - Deans, Matthew C AU - Delapp, D AU - Ehlmann, B L AU - Hardgrove, C J AU - Jackson, R AU - Lasue, Jeremie AU - McInroy, Rhonda AU - Meslin, P Y AU - Mezzacappa, A AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P21D EP - 04 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700095714?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+chemical+trends+in+rock+surface+compositions+as+measured+by+ChemCam+at+Gale+Crater%2C+Mars%3B+the+signatures+of+rock+coatings+and+rinds+in+LIBS+laboratory+data&rft.au=Lanza%2C+Nina+L%3BClegg%2C+S+M%3BWiens%2C+R+C%3BLeveille%2C+Richard+J%3BMelikechi%2C+N%3BOllila%2C+A%3BTokar%2C+R+L%3BNewsom%2C+H+E%3BBlank%2C+J+G%3BBridges%2C+Nathan+T%3BClark%2C+B%3BDeans%2C+Matthew+C%3BDelapp%2C+D%3BEhlmann%2C+B+L%3BHardgrove%2C+C+J%3BJackson%2C+R%3BLasue%2C+Jeremie%3BMcInroy%2C+Rhonda%3BMeslin%2C+P+Y%3BMezzacappa%2C+A%3BAnonymous&rft.aulast=Lanza&rft.aufirst=Nina&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - MOMA GC-MS coupling AN - 1700095708; 2015-072535 AB - The joint ESA-Roscosmos Exo-Mars-2018 rover mission seeks the signs of past or present life on Mars. The Mars Organic Molecule Analyzer (MOMA) aboard the ExoMars rover will be a key analytical tool in providing chemical (molecular) information from the solid samples, with particular focus on the characterization of organic content. Central to MOMA instrumentation is a gas chromatograph-mass spectrometer (GC-MS) which provides the unique ability to characterize a broad range of compounds allowing chemical analyses of volatile and non-volatile species. The Gas chromatograph and the oven have been built at LATMOS/LISA (France) and at MPS (Germany) respectively whereas the mass spectrometer has been built at the NASA Goddard Space Flight Center (USA). Both instruments have been tested separately first and have been coupled in order to test the efficiency of the future MOMA GC-MS instrument. The main objective of the second step has been to test the quantitative response of both instruments while they are coupled and to characterize the combined instrument detection limit for several compounds. A final experiment has been done in order to test the feasibility of the separation and detection of a mixture contained in a soil sample introduced in the MOMA oven. JF - American Geophysical Union Fall Meeting AU - Buch, Arnaud AU - Pinnick, Veronica T AU - Grand, Noel AU - Szopa, Cyril AU - Danell, R AU - Lustrement, Benjamin AU - Freissinet, Caroline AU - van Amerom, Friso H AU - Raulin, Francois AU - Glavin, Daniel P AU - Stalport, Fabien AU - Coll, P J AU - Arevalo, R D AU - Brinckerhoff, William B AU - Goesmann, F AU - Mahaffy, Paul R AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P51G EP - 1800 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700095708?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=MOMA+GC-MS+coupling&rft.au=Buch%2C+Arnaud%3BPinnick%2C+Veronica+T%3BGrand%2C+Noel%3BSzopa%2C+Cyril%3BDanell%2C+R%3BLustrement%2C+Benjamin%3BFreissinet%2C+Caroline%3Bvan+Amerom%2C+Friso+H%3BRaulin%2C+Francois%3BGlavin%2C+Daniel+P%3BStalport%2C+Fabien%3BColl%2C+P+J%3BArevalo%2C+R+D%3BBrinckerhoff%2C+William+B%3BGoesmann%2C+F%3BMahaffy%2C+Paul+R%3BAnonymous&rft.aulast=Buch&rft.aufirst=Arnaud&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Studying the formation, evolution, and habitability of the Galilean satellites AN - 1700095700; 2015-072415 AB - Highly sensitive, high-mass resolution mass spectrometry is an important in situ tool for the study of solar system bodies. In this talk we detail the science objectives, develop the rationale for the measurement requirements, and describe potential instrument/mission methodologies for studying the formation, evolution, and habitability of the Galilean satellites. We emphasize our studies of Ganymede and Europa as described in our instrument proposals for the recently selected JUICE mission and the proposed Europa Clipper mission. JF - American Geophysical Union Fall Meeting AU - McGrath, Melissa A AU - Waite, J H AU - Brockwell, T AU - McKinnon, W B AU - Wyrick, D Y AU - Mousis, Olivier AU - Magee, B AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P43A EP - 2005 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700095700?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Studying+the+formation%2C+evolution%2C+and+habitability+of+the+Galilean+satellites&rft.au=McGrath%2C+Melissa+A%3BWaite%2C+J+H%3BBrockwell%2C+T%3BMcKinnon%2C+W+B%3BWyrick%2C+D+Y%3BMousis%2C+Olivier%3BMagee%2C+B%3BAnonymous&rft.aulast=McGrath&rft.aufirst=Melissa&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Four years on orbit at the Moon with LOLA AN - 1700095698; 2015-072516 AB - After four years of near-continuous operation at the Moon, the Lunar Orbiter Laser Altimeter (LOLA) continues to collect altimetry, surface roughness, slope and normal reflectance data. Although the instrument is beginning to show the effects of tens of thousands of thermal cycles and the natural process of the aging of the laser transmitters, LOLA continues to acquire data on the sunlit portion of every orbit on all 5 laser beams when below 100-km altitude. LOLA has acquired over 6X10 (super 9) altimeter measurements, all geodetically controlled to the center-of-mass of the Moon with a radial precision of around 10 cm and an accuracy of about 1 meter. The position of the measurements on the lunar surface is primarily limited by the knowledge of the position of the spacecraft in orbit; in the last year the LRO orbit accuracy has improved significantly as a result of the availability of an accurate gravity model of the Moon from the GRAIL Discovery mission. Our present estimate of positional accuracy is less than 10 m rms but is only achievable with a GRAIL gravity model to at least degree and order 600 because of the perturbing gravitational effect of the Moon's surface features. Significant improvements in the global shape and topography have assisted the Lunar Reconnaissance Orbiter Camera (LROC) stereo mapping program, and the identification of potential lunar landing sites for ESA and Russia, particularly in the high-latitude polar regions where 5- and 10-meter average horizontal resolution has been obtained. LOLA's detailed mapping of the polar regions has improved the delineation of permanently-shadowed areas and assisted in the understanding of the LEND neutron data and its relationship to surface slopes. Recently, a global, calibrated LOLA normal albedo dataset at 1064 nm has been developed and is being combined with analysis and modeling by the Diviner team for the identification of the coldest locations in the polar regions. JF - American Geophysical Union Fall Meeting AU - Smith, David E AU - Zuber, M T AU - Neumann, Gregory A AU - Mazarico, E AU - Torrence, Mark H AU - Lemoine, Frank G AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P51E EP - 1779 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700095698?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Four+years+on+orbit+at+the+Moon+with+LOLA&rft.au=Smith%2C+David+E%3BZuber%2C+M+T%3BNeumann%2C+Gregory+A%3BMazarico%2C+E%3BTorrence%2C+Mark+H%3BLemoine%2C+Frank+G%3BAnonymous&rft.aulast=Smith&rft.aufirst=David&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Thermophysical properties of radar-dark ejecta haloes on the Moon; constraints from Diviner thermal observations and modeling AN - 1700095651; 2015-072424 AB - We have previously reported on an ejecta facies consisting of fine-grained/block poor material associated with most young impact craters on the nearside of the Moon. This material forms low-radar-return and low-radar-CPR haloes external to radar-bright blocky crater ejecta. The haloes' radar signature persists at multiple radar wavelengths and is consistent with depletion in wavelength-scale scatterers (e.g., rocks) on the surface and up to several meters' depth. The exact formation mechanism remains unknown, but successful hypotheses must be able to explain the inferred paucity of rocks. Here, we investigate these features further using new data from the LRO Diviner thermal mapper. Diviner data provide a means of characterizing the thermophysical properties of the surface and near-surface regolith column, to a depth of approximately 1 meter. Specific to radar-dark, block-poor ejecta haloes, we use two Diviner-derived quantities: rock abundance values, which yield estimates of the number of surface blocks 1 meter and larger; and rock-free regolith temperature, which provide information about the density of the regolith column in the absence of exposed rocks (and which are sensitive to the presence of small surface and/or larger buried rocks). Using these two quantities gridded at a spatial scale of 128 pixels/degree ( approximately 250 m at the equator), we observe that craters with radar-dark haloes in the nearside maria show corresponding signatures of depletion in both large and small/buried rocks. In this work, we investigate further quantitative constraints on the thickness and character of these deposits that may be derived from thermal modeling of the regolith column. JF - American Geophysical Union Fall Meeting AU - Ghent, R R AU - Carter, Lynn M AU - Bandfield, Josh L AU - Hayne, Paul O AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P43C EP - 2016 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700095651?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Thermophysical+properties+of+radar-dark+ejecta+haloes+on+the+Moon%3B+constraints+from+Diviner+thermal+observations+and+modeling&rft.au=Ghent%2C+R+R%3BCarter%2C+Lynn+M%3BBandfield%2C+Josh+L%3BHayne%2C+Paul+O%3BAnonymous&rft.aulast=Ghent&rft.aufirst=R&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - The importance of in situ measurements and sample return in the search for chemical biosignatures on Mars or other solar system bodies AN - 1700095641; 2015-072460 AB - The search for evidence of life on Mars and elsewhere will continue to be one of the primary goals of NASA's robotic exploration program for decades to come. NASA and ESA are currently planning a series of robotic missions to Mars with the goal of understanding its climate, resources, and potential for harboring past or present life. One key goal will be the search for chemical biomarkers including organic compounds important in life on Earth and their geological forms. These compounds include amino acids, the monomer building blocks of proteins and enzymes, nucleobases and sugars which form the backbone of DNA and RNA, and lipids, the structural components of cell membranes. Many of these organic compounds can also be formed abiotically as demonstrated by their prevalence in carbonaceous meteorites, though, their molecular characteristics may distinguish a biological source. It is possible that in situ instruments may reveal such characteristics, however, return of the right samples to Earth (i.e. samples containing chemical biosignatures or having a high probability of biosignature preservation) would enable more intensive laboratory studies using a broad array of powerful instrumentation for bulk characterization, molecular detection, isotopic and enantiomeric compositions, and spatially resolved chemistry that may be required for confirmation of extant or extinct life on Mars or elsewhere. In this presentation we will review the current in situ analytical capabilities and strategies for the detection of organics on the Mars Science Laboratory (MSL) rover using the Sample Analysis at Mars (SAM) instrument suite and discuss how both future advanced in situ instrumentation and laboratory measurements of samples returned from Mars and other targets of astrobiological interest including the icy moons of Jupiter and Saturn will help advance our understanding of chemical biosignatures in the Solar System. JF - American Geophysical Union Fall Meeting AU - Glavin, Daniel P AU - Brinckerhoff, William B AU - Conrad, Pamela G AU - Dworkin, Jason P AU - Eigenbrode, Jennifer L AU - Getty, Stephanie A AU - Mahaffy, Paul R AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P44B EP - 03 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700095641?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+importance+of+in+situ+measurements+and+sample+return+in+the+search+for+chemical+biosignatures+on+Mars+or+other+solar+system+bodies&rft.au=Glavin%2C+Daniel+P%3BBrinckerhoff%2C+William+B%3BConrad%2C+Pamela+G%3BDworkin%2C+Jason+P%3BEigenbrode%2C+Jennifer+L%3BGetty%2C+Stephanie+A%3BMahaffy%2C+Paul+R%3BAnonymous&rft.aulast=Glavin&rft.aufirst=Daniel&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Pluto's atmosphere and surface ices as simulated by the PlutoWRF GCM AN - 1700095621; 2015-072345 AB - The PlutoWRF general circulation model (GCM) was built to examine the large-scale structure and dynamics of the atmosphere, the nature and propagation of waves within the atmosphere, and the exchanges of volatiles between the atmosphere and the surface. We seek to provide an comprehensive framework for the study of the increasingly rich observational data sets (including stellar occultations of the atmosphere) and to provide context and analysis of observations from the New Horizons mission. The PlutoWRF GCM is based on the planetary adaptation of the NCAR Weather Research and Forecasting (WRF) model. It is a compressible, nonhydrostatic model where we have added physics to treat radiative transfer following Zhu et al. (2013), a bulk nitrogen cycle including condensation of surface ice, and cycles of additional trace volatile species. Existing subsurface heat diffusion, surface layer exchange and boundary layer mixing schemes have been adapted to Pluto. Boundary conditions for initial ice distribution and surface pressure are taken from energy balance and non-GCM volatile transport models constrained by observations. In this work we focus on the performance of the PlutoWRF GCM compared with our linear tidal model (Toigo et al., 2010), and will examine the generation and propagation of large-scale gravity waves associated with diurnal sublimation and condensation. JF - American Geophysical Union Fall Meeting AU - Toigo, A D AU - French, R G AU - Gierasch, P J AU - Richardson, M I AU - Guzewich, S AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P21B EP - 1735 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700095621?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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%27s+atmosphere+and+surface+ices+as+simulated+by+the+PlutoWRF+GCM&rft.au=Toigo%2C+A+D%3BFrench%2C+R+G%3BGierasch%2C+P+J%3BRichardson%2C+M+I%3BGuzewich%2C+S%3BAnonymous&rft.aulast=Toigo&rft.aufirst=A&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Is Pluto a planet? Student powered video rap 'battle' over tiny Pluto's embattled planetary standing AN - 1700095601; 2015-072573 AB - Is Pluto a planet? Some creative low income Bay-area middle-schoolers put a musical spin on this hot science debate with a video rap 'battle' over tiny Pluto's embattled planetary standing. The students' timing was perfect, with NASA's New Horizons mission set to conduct the first reconnaissance of Pluto and its moons in July 2015. Pluto--the last of the nine original planets to be explored by spacecraft--has been the subject of scientific study and speculation since Clyde Tombaugh discovered it in 1930, orbiting the Sun far beyond Neptune. Produced by the students and a very creative educator, the video features students "battling" back and forth over the idea of Pluto being a planet. The group collaborated with actual space scientists to gather information and shot their video before a "green screen" that was eventually filled with animations and visuals supplied by the New Horizons mission team. The video debuted at the Pluto Science Conference in Maryland in July 2013--to a rousing response from researchers in attendance. The video marks a nontraditional approach to the ongoing "great planet debate" while educating viewers on a recently discovered region of the solar system. By the 1990s, researchers had learned that Pluto possessed multiple exotic ices on its surface, a complex atmosphere and seasonal cycles, and a large moon (Charon) that likely resulted from a giant impact on Pluto itself. It also became clear that Pluto was no misfit among the planets--as had long been thought--but the largest and brightest body in a newly discovered "third zone" of our planetary system called the Kuiper Belt. More recent observations have revealed that Pluto has a rich system of satellites--five known moons--and a surface that changes over time. Scientists even speculate that Pluto may possess an internal ocean. For these and other reasons, the 2003 Planetary Decadal Survey ranked a Pluto/Kuiper Belt mission as the highest priority mission for NASA's newly created New Frontiers program and that mission is New Horizons. This effort was funded by a Hewlett Packard Sustainability and Social Innovation grant, the Silicon Valley Education Foundation and a Kickstarter campaign to expand this effort to multiple schools. This process and product are great examples of teamwork between scientists and science educators--and show how we can use the appeal of video to communicate science to diverse audiences. JF - American Geophysical Union Fall Meeting AU - Beisser, Kerri AU - Cruikshank, Dale P AU - McFadden, Tom AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract PA42B EP - 07 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700095601?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Is+Pluto+a+planet%3F+Student+powered+video+rap+%27battle%27+over+tiny+Pluto%27s+embattled+planetary+standing&rft.au=Beisser%2C+Kerri%3BCruikshank%2C+Dale+P%3BMcFadden%2C+Tom%3BAnonymous&rft.aulast=Beisser&rft.aufirst=Kerri&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Neptune and Triton; a study in future exploration AN - 1700095584; 2015-072553 AB - Neptune provides a unique natural laboratory for studying the dynamics of ice giants. Last visited by Voyager 2 in 1989, Neptune and its moon Triton hold important clues to the evolution of the solar system. The Voyager 2 flyby revealed Neptune to be a dynamic world with large storms, unparalleled wind speeds, and an unusual magnetic field. Triton, Neptune's largest satellite, is believed to be a captured Kuiper Belt Object with a thin atmosphere and possible sub-surface ocean. Further study of the farthest planet in our solar system could offer new insights into the dynamics of ice-giant exoplanets, and help us understand their complex atmospheres. The diverse science questions associated with Neptune and Triton motivate the complex and exciting mission proposed in this study. The proposed mission follows the guidelines of the 2013-2022 Planetary Science Decadal Survey, and optimizes the number of high priority science goals achieved, while still maintaining low mission costs. High priority science goals include understanding the structure, composition, and dynamics of Neptune's atmosphere and magnetosphere, as well as analyzing the surface of Triton. With a budget of $1.5 billion, the mission hosts an atmospheric probe and suite of instruments equipped with technologies significantly more advanced than those carried by Voyager 2. Additionally, the mission offers improved spatial coverage and higher resolution measurements than any previously achieved at Neptune. The proposed spacecraft would complete an orbital tour of Neptune and execute several close flybys of Triton. Further study of Neptune and Triton will provide exciting insights into what lies on the edge of our solar system and beyond. This study was prepared in conjunction with Jet Propulsion Laboratory's 2013 Planetary Science Summer School. JF - American Geophysical Union Fall Meeting AU - Day, M D AU - Malaska, Mike J AU - Hosseini, S AU - McGranaghan, Ryan AU - Fernandes, Philip A AU - Fougere, N AU - Clegg, R N AU - Scully, J AU - Alibay, F AU - Ries, Paul A AU - Craig, P L AU - Hutchins, M L AU - Leonard, Jason AU - Uckert, K AU - Patthoff, A AU - Girazian, Z AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P51G EP - 1822 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700095584?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Neptune+and+Triton%3B+a+study+in+future+exploration&rft.au=Day%2C+M+D%3BMalaska%2C+Mike+J%3BHosseini%2C+S%3BMcGranaghan%2C+Ryan%3BFernandes%2C+Philip+A%3BFougere%2C+N%3BClegg%2C+R+N%3BScully%2C+J%3BAlibay%2C+F%3BRies%2C+Paul+A%3BCraig%2C+P+L%3BHutchins%2C+M+L%3BLeonard%2C+Jason%3BUckert%2C+K%3BPatthoff%2C+A%3BGirazian%2C+Z%3BAnonymous&rft.aulast=Day&rft.aufirst=M&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Photosynthetic microbial mats are exemplary sources of diverse biosignatures AN - 1700095566; 2015-072461 AB - Marine cyanobacterial microbial mats are widespread, compact, self-contained ecosystems that create diverse biosignatures and have an ancient fossil record. Within the mats, oxygenic photosynthesis provides organic substrates and O2 to the community. Both the absorption and scattering of light change the intensity and spectral composition of incident radiation as it penetrates a mat. Some phototrophs utilize infrared light near the base of the photic zone. A mat's upper layers can become highly reduced and sulfidic at night. Counteracting gradients of O2 and sulfide shape the chemical environment and provide daily-contrasting microenvironments separated on a scale of a few mm. Radiation hazards (UV, etc.), O2 and sulfide toxicity elicit motility and other physiological responses. This combination of benefits and hazards of light, O2 and sulfide promotes the allocation of various essential mat processes between light and dark periods and to various depths in the mat. Associated nonphotosynthetic communities, including anaerobes, strongly influence many of the ecosystem's overall characteristics, and their processes affect any biosignatures that enter the fossil record. A biosignature is an object, substance and/or pattern whose origin specifically requires a biological agent. The value of a biosignature depends not only on the probability of life creating it, but also on the improbability of nonbiological processes producing it. Microbial mats create biosignatures that identify particular groups of organisms and also reveal attributes of the mat ecosystem. For example, branched hydrocarbons and pigments can be diagnostic of cyanobacteria and other phototrophic bacteria, and isoprenoids can indicate particular groups of archea. Assemblages of lipid biosignatures change with depth due to changes in microbial populations and diagenetic transformations of organic matter. The 13C/12C values of organic matter and carbonates reflect isotopic discrimination by particular microorganisms as well as networks of C flow within mats; thus they offer insights about community structure. For example, relative 13C/12C values of individual lipid biosignatures can indicate trophic relationships between key groups of microorganisms. Mat microenvironments can affect the stability of authigenic minerals and alter the chemical compositions and crystal forms of carbonate, sulfate and metal oxide minerals. Interactions between low molecular weight organic compounds and sulfides in mat pore waters can produce alkyl sulfide gases. Processes associated with these physically coherent biofilms can trap and bind detrital grains, enhance mineral precipitation or dissolution, and stabilize sediment surfaces. Accordingly mats can create distinctive sedimentary fabrics and structures. Stromatolites are the most ancient, widespread examples of such fabrics and structures. Thus photosynthetic microbial mats create diverse biosignatures that, when preserved in the geologic record, can help to identify the former presence of key populations of microorganisms and reveal key processes that occurred within ancient mats as well as the interactions between those ecosystems and their environment. JF - American Geophysical Union Fall Meeting AU - des Marais, David J AU - Jahnke, Linda L AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract P44B EP - 04 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700095566?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Photosynthetic+microbial+mats+are+exemplary+sources+of+diverse+biosignatures&rft.au=des+Marais%2C+David+J%3BJahnke%2C+Linda+L%3BAnonymous&rft.aulast=des+Marais&rft.aufirst=David&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Stress-dependent voltage offsets from polymer insulators used in rock mechanics and material testing AN - 1696877215; 2015-068358 AB - Dielectric insulators are used in a variety of laboratory settings when performing experiments in rock mechanics, petrology, and electromagnetic studies of rocks in the fields of geophysics, material science, and civil engineering. These components may be used to electrically isolate geological samples from the experimental equipment, to perform a mechanical compliance function between brittle samples and the loading equipment, to match ultrasonic transducers, or perform other functions. In many experimental configurations the insulators bear the full brunt of force applied to the sample but do not need to withstand high voltages, therefore the insulators are often thin sheets of mechanically tough polymers. From an instrument perspective, transduction from various types of mechanical perturbation has been qualitatively compared for a number of polymers [1, 2] and these error sources are readily apparent during high-impedance measurements if not mitigated. However even when following best practices, a force-dependent voltage signal still remains and its behavior is explored in this presentation. In this experiment two thin sheets (0.25 mm) of high-density polyethylene (HDPE) were set up in a stack, held alternately between three aluminum bars; this stack was placed on the platen of a 60T capacity hydraulic testing machine. The surface area, A, over which the force is applied to the PE sheets in this sandwich is roughly 40 square cm, each sheet forming a parallel-plate capacitor having roughly 320 pF [3], assuming the relative dielectric permittivity of PE is approximately 2.3. The outer two aluminum bars were connected to the LO input of the electrometer and the central aluminum bar was connected to the HI input of a Keithley model 617 electrometer. Once the stack is mechanically well-seated with no air gaps, the voltage offset is observed to be a linear function of the baseline voltage for a given change in applied force. For a periodically applied force of 66.7 kN the voltage offsets were measured as a function of initial voltage, and these data were fit with a linear function that was constrained to pass through the origin. The best fit solution had a correlation coefficient of R = 0.85 and a slope of approximately -0.0228 volts/volt. The voltage offset when normalized is demonstrated to be constant -2.28 % for both positive and negative polarities over nearly 3 orders of baseline voltage magnitude. From this, the voltage-force coefficient is derived to be -0.34 ppm/N. This correlates well to a first-order parallel plate capacitor model that assumes constant area, and small deformation such that the polymer may be mechanically modeled by a spring that obeys Hooke's law. This simple model predicts that the coefficient of proportionality is a function of Young's modulus E = 0.8 GPa and surface area of the insulator, theoretically -1/EA = -0.31 ppm/N. The outcome of this work is an improved insulator made from ultra-high molecular weight (UHMW) polyethylene and other approaches toward the minimization of and compensation for these experimental artifacts. JF - American Geophysical Union Fall Meeting AU - Carlson, G G AU - Dahlgren, R AU - Vanderbilt, V C AU - Johnston, M J AU - Dunson, C AU - Gray, A AU - Freund, F AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract NH31B EP - 1606 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696877215?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Stress-dependent+voltage+offsets+from+polymer+insulators+used+in+rock+mechanics+and+material+testing&rft.au=Carlson%2C+G+G%3BDahlgren%2C+R%3BVanderbilt%2C+V+C%3BJohnston%2C+M+J%3BDunson%2C+C%3BGray%2C+A%3BFreund%2C+F%3BAnonymous&rft.aulast=Carlson&rft.aufirst=G&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Analyzing the validity of a possible relation between solar-terrestrial magnetic activity and earthquakes AN - 1696877169; 2015-068412 AB - A connection between solar-terrestrial geomagnetic activity and seismicity has been long proposed. Some studies claim there are global effects, relating solar activity, for instance sunspot number or solar wind speed, with earthquakes occurrence on the Earth. Other studies intend to find effects on a local scale, where perturbations in the geomagnetic activity are followed by seismic events. To address these issues, we analyze the statistical validity of some of the reported correlations, by means of two statistical approaches in both scales, namely the use of surrogate and Student's test. Regarding to the global analysis, we study the correlations between the sunspots area, Dst index, and the total annual released seismic energy during the last century. For local geomagnetic variations prior to an important earthquake, we carry out a similar statistical analysis between magnetic field fluctuations from the SAMBA array and the Dst index in a window of two years centered in the February 27th, 2010 M = 8.8 earthquake at Chile. JF - American Geophysical Union Fall Meeting AU - Tapia, M J AU - Dominguez, M AU - Pinto, V A AU - Moya, P S AU - Munoz, V AU - Rogan, J AU - Valdivia, J A AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract NH33B EP - 1645 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696877169?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Analyzing+the+validity+of+a+possible+relation+between+solar-terrestrial+magnetic+activity+and+earthquakes&rft.au=Tapia%2C+M+J%3BDominguez%2C+M%3BPinto%2C+V+A%3BMoya%2C+P+S%3BMunoz%2C+V%3BRogan%2C+J%3BValdivia%2C+J+A%3BAnonymous&rft.aulast=Tapia&rft.aufirst=M&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - What is the polarity of the global E field between ground and ionosphere? AN - 1696876829; 2015-068364 AB - The potential difference between Earth's surface and the lower edge of the ionosphere is estimated to be on the order of 250 kV, highly variable with values quoted as high as 500 kV. The polarity is uncertain. According to the prevailing view in the Global Electric Circuit community, the Earth's surface is negative relative to the lower edge of the ionosphere, which is believed to be positive. The polarity of the global E field is based on the following reasoning: (i) worldwide lightning strikes, about 6 per sec, constantly deliver electrons to the solid Earth, thereby charging the ground negative; (ii) positive ions have been observed to drift upward above thunderstorm systems, thereby charging the lower edge of the ionosphere positive. This polarity cannot be correct. The sign of Earth's ground is definitely positive. Here is why: Essentially all crustal rocks contain peroxy defects, which release positive hole charge carriers as the rocks are subjected to tectonic stresses. The positive hole charge carriers dominate the electrical conductivity throughout the upper to middle crust. Being highly mobile, they spread to the Earth surface, building up a positive surface charge. Precisely because the ground is positive are lightning strikes attracted to the ground. The Earth ground rapidly dissipates the electrons delivered by lightning strikes in the same way as "the ground" dissipates electric currents from technical installations. Otherwise our electric grid would not function. Hence, the lower edge on the ionosphere must be negative. This is evidenced by the widely reported increase in TEC, "Total Electron Content", over regions of impending earthquake activity. The reason is that, due to field-ionization of air molecules at the (positive) ground-to-air interface, the air becomes heavily laden with positive airborne ions. These ions rise to stratospheric height and upward through the mesosphere. The ionospheric plasma becomes polarized: its electrons move downward in response to the positive ions moving upward. In the steady state, the Global Electric Circuit the number of negative charges (electrons) delivered downward must be approximately equal to the number of positive charges (ions) delivered upward. Any imbalance between the two partial fluxes will lead to a potential difference, which - presumably - is the highly variable approximately 250 kV potential difference quoted to exist between the ground and the lower edge of the ionosphere. JF - American Geophysical Union Fall Meeting AU - Enriquez, A AU - Roberts, L AU - Freund, F AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract NH31B EP - 1612 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696876829?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=What+is+the+polarity+of+the+global+E+field+between+ground+and+ionosphere%3F&rft.au=Enriquez%2C+A%3BRoberts%2C+L%3BFreund%2C+F%3BAnonymous&rft.aulast=Enriquez&rft.aufirst=A&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Numerical and experimental approaches toward understanding lava flow heat transfer AN - 1696875816; 2015-068473 AB - We have performed numerical modeling and experimental studies to quantify the heat transfer from a lava flow into an underlying particulate substrate. This project was initially motivated by a desire to understand the transfer of heat from a lava flow into the lunar regolith. Ancient regolith deposits that have been protected by a lava flow may contain ancient solar wind, solar flare, and galactic cosmic ray products that can give insight into the history of our solar system, provided the records were not heated and destroyed by the overlying lava flow. In addition, lava-substrate interaction is an important aspect of lava fluid dynamics that requires consideration in lava emplacement models Our numerical model determines the depth to which the heat pulse will penetrate beneath a lava flow into the underlying substrate. Rigorous treatment of the temperature dependence of lava and substrate thermal conductivity and specific heat capacity, density, and latent heat release are imperative to an accurate model. Experiments were conducted to verify the numerical model. Experimental containers with interior dimensions of 20 x 20 x 25 cm were constructed from 1 inch thick calcium silicate sheeting. For initial experiments, boxes were packed with lunar regolith simulant (GSC-1) to a depth of 15 cm with thermocouples embedded at regular intervals. Basalt collected at Kilauea Volcano, HI, was melted in a gas forge and poured directly onto the simulant. Initial lava temperatures ranged from nearly equal 1200 to 1300 degrees C. The system was allowed to cool while internal temperatures were monitored by a thermocouple array and external temperatures were monitored by a Forward Looking Infrared (FLIR) video camera. Numerical simulations of the experiments elucidate the details of lava latent heat release and constrain the temperature-dependence of the thermal conductivity of the particulate substrate. The temperature-dependence of thermal conductivity of particulate material is not well known, especially at high temperatures. It is important to have this property well constrained as substrate thermal conductivity is the greatest influence on the rate of lava-substrate heat transfer. At Kilauea and Mauna Loa Volcanoes, Hawaii, and other volcanoes that threaten communities, lava may erupt over a variety of substrate materials including cool lava flows, volcanic tephra, soils, sand, and concrete. The composition, moisture, organic content, porosity, and grain size of the substrate dictate the thermophysical properties, thus affecting the transfer of heat from the lava flow into the substrate and flow mobility. Particulate substrate materials act as insulators, subduing the rate of heat transfer from the flow core. Therefore, lava that flows over a particulate substrate will maintain higher core temperatures over a longer period, enhancing flow mobility and increasing the duration and aerial coverage of the resulting flow. Lava flow prediction models should include substrate specification with temperature dependent material property definitions for an accurate understanding of flow hazards. JF - American Geophysical Union Fall Meeting AU - Rumpf, M E AU - Fagents, S A AU - Hamilton, C AU - Crawford, I A AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract V51D EP - 2707 PB - American Geophysical Union, Washington, DC VL - 2013 KW - bedrock KW - experimental studies KW - numerical models KW - lava flows KW - Moon KW - thermal regime KW - temperature KW - laboratory studies KW - lava KW - heat transfer KW - terrestrial comparison KW - regolith KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696875816?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Numerical+and+experimental+approaches+toward+understanding+lava+flow+heat+transfer&rft.au=Rumpf%2C+M+E%3BFagents%2C+S+A%3BHamilton%2C+C%3BCrawford%2C+I+A%3BAnonymous&rft.aulast=Rumpf&rft.aufirst=M&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-17 N1 - CODEN - #07548 N1 - SubjectsTermNotLitGenreText - bedrock; experimental studies; heat transfer; laboratory studies; lava; lava flows; Moon; numerical models; regolith; temperature; terrestrial comparison; thermal regime ER - TY - JOUR T1 - Channel and tube flow features associated with the Twin Craters Lava Flow, Zuni-Bandera Volcanic Field, NM; insights into similar features on Mars AN - 1696875727; 2015-068611 AB - The Zuni-Bandera Volcanic Field lies near the center of the Jemez lineament that extends from central Arizona to northeastern New Mexico. The Jemez lineament is a result of rifting in the Earth's crust and is associated with volcanic activity that spans the last 16 Ma. The youngest volcanic activity associated with the lineament includes basaltic lava that was erupted 3 ka ago to form the McCartys Flow. The Twin Craters flow is moderately older (18.0 ka), but it also well-preserved and provides an ideal location to investigate volcanic processes and landforms. In this study, we combined detailed field observations and mapping with remote sensing to better understand variations in morphology along the transport system of the flow . The Twin Craters flow is characterized as an aa and tube-fed pahoehoe flow with braided or branching tubes and channels; and associated aa and pahoehoe break-outs. It is possible that the variations in morphology along the same transport structure might be related to pre-flow slope, which might have also been variable along flow. Shatter ring features are thought to be related to changes in eruption rate, and therefore, local flux through the system. However, over-pressurization of the tube might also be related to changes in local discharge rate associated with the ponding and release of lava within the transport system that may be due to interactions between the lava and obstacles along the flow's path (see Mallonee et al., this meeting). Many of these features are similar to features present in the Tharsis Montes region of Mars and particularly on the southern apron of Ascraeus Mons. The detailed description of the morphology of the Twin Craters Lava Flow and the understanding of the emplacement mechanisms will be crucial in identifying the processes that formed the Ascraeus flows and channels. This will aid in determining if the lava surface textures are directly related to eruption conditions or if they have been significantly influence by transport processes. JF - American Geophysical Union Fall Meeting AU - Samuels, R AU - deWet, A AU - Bleacher, J E AU - von Meerscheidt, H C AU - Hamilton, C AU - Garry, W B AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract V53C EP - 2805 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696875727?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Channel+and+tube+flow+features+associated+with+the+Twin+Craters+Lava+Flow%2C+Zuni-Bandera+Volcanic+Field%2C+NM%3B+insights+into+similar+features+on+Mars&rft.au=Samuels%2C+R%3BdeWet%2C+A%3BBleacher%2C+J+E%3Bvon+Meerscheidt%2C+H+C%3BHamilton%2C+C%3BGarry%2C+W+B%3BAnonymous&rft.aulast=Samuels&rft.aufirst=R&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Sensitivity and uncertainty analysis of a physically-based landslide model AN - 1696874965; 2015-066577 AB - Worldwide, rainfall-induced landslides pose a major threat to life and property. Remotely sensed data combined with physically-based models of landslide initiation are a potentially economical solution for anticipating landslide activity over large, national or multinational areas as a basis for landslide early warning. Detailed high-resolution landslide modeling is challenging due to difficulties in quantifying the complex interaction between rainfall infiltration, surface materials and the typically coarse resolution of available remotely sensed data. These slope-stability models calculate coincident changes in driving and resisting forces at the hillslope level for anticipating landslides. This research seeks to better quantify the uncertainty of these models as well as evaluate their potential for application over large areas through detailed sensitivity analyses. Sensitivity to various factors including model input parameters, boundary and initial conditions, rainfall inputs, and spatial resolution of model inputs is assessed using a probabilistic ensemble setup. We use the physically-based USGS model, TRIGRS (Transient Rainfall Infiltration and Grid-Based Regional Slope-Stability), that has been ported to NASA's high performance Land Information System (LIS) to take advantage of its multiple remote sensing data streams and tools. We apply the TRIGRS model over an example region with available in-situ gage and remotely sensed rainfall (e.g., TRMM: http://pmm.nasa.gov). To make this model applicable even in regions without relevant fine-resolution data, soil depth is estimated using topographic information, and initial water table depth using spatially disaggregated coarse-resolution modeled soil moisture data. The analyses are done across a range of fine spatial resolutions to determine the corresponding trend in the contribution of different factors to the model output uncertainty. This research acts as a guide towards application of such a detailed slope-stability model over coarser resolutions and larger areas. JF - American Geophysical Union Fall Meeting AU - Yatheendradas, S AU - Bach Kirschbaum, D AU - Baum, R L AU - Godt, J AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract NH23A EP - 1524 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696874965?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+and+uncertainty+analysis+of+a+physically-based+landslide+model&rft.au=Yatheendradas%2C+S%3BBach+Kirschbaum%2C+D%3BBaum%2C+R+L%3BGodt%2C+J%3BAnonymous&rft.aulast=Yatheendradas&rft.aufirst=S&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - A new perspective on ancient Martian volcanism; evidence for supervolcanoes in Arabia Terra, Mars AN - 1696874951; 2015-068619 AB - While many Hesperian and Amazonian volcanic constructs on Mars are easily recognizable from their shield morphologies, significantly less is known about ancient (Noachian and earliest Hesperian) martian volcanism. Yet, heat flow in the martian crust was higher in the Noachian and therefore the planet was likely more magmatically active [1]. It is possible that Noachian volcanic constructs have largely escaped detection because higher erosion rates on ancient Mars destroyed geomorphological evidence for their existence. However, another possibility exists: some ancient volcanoes on Mars might have been of a fundamentally different character compared to well known, younger shield volcanoes because of an explosive nature of the more ancient ones. We present evidence for ancient supervolcanoes within the Arabia Terra region of Mars. Several large ( nearly equal 20-70 km-diameter) craters within Arabia Terra display little or no evidence for impact origins and exhibit various degrees of evidence for volcanism. These structures, which we term "plains style caldera complexes," show no evidence for preserved ejecta, raised rims, inverted stratigraphy, or central peaks that could be attributed to meteor impact-related processes. While it is possible that any evidence for impact origins was removed by erosion, we consider this unlikely because crater degradation generally leads to lower depth-diameter ratios [2] and these structures have high depth-diameter ratios, comparable to values for unmodified craters [3]. In fact, erosion has been low enough to preserve various pieces of evidence for volcanism associated with the structures, such as association with ridged plains lavas, possible vent structures, evidence for lava lakes in some cases, and association with sagging crust possibly related to magma migration or withdrawal. Taken together, these structures represent a newly recognized type of volcanism on Mars dominated by explosive volcanism and structural collapse. They occur within a region of Mars not previously thought to contain volcanoes, but known to have anomalously thin crust [4]. We suggest that the explosive volcanism need not require the presence of magmas of evolved composition or unusually high volatile content; basaltic magmas that ascended rapidly through relatively thin crust could have plausibly resulted in explosive volcanism. Eruption of vast quantities of fine-grained ash in northern Arabia Terra might have ultimately led to the formation of fretted terrain, composed of friable, layered, fine-grained deposits along the dichotomy boundary, as well as the deposition of friable layered deposits located throughout Arabia Terra. [1] McGovern, P. J. et al. Localized gravity/topography admittance and correlation spectra on Mars: Implications for regional and global evolution. J. Geophys. Res. 107, 19-11-19-25 (2002). [2] Malin, M. & Dzurisin, D. Landform Degradation on Mercury, the Moon, and Mars: Evidence From Crater Depth-Diameter Relationships. J. Geophys. Res. 82, 376-388 (1977). [3] Robbins, S. J. & Hynek, B. M. A new global database of Mars impact craters >=1 km: 1. Database creation, properties, and parameters. J. Geophys. Res. 117, E05004, doi:10.1029/2011je003966 (2012). [4] Neumann, G. A. et al. Crustal structure of Mars from gravity and topography. J. Geophys. Res. 109, E08002 (2004). JF - American Geophysical Union Fall Meeting AU - Michalski, J R AU - Bleacher, J E AU - Wright, S P AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract V53C EP - 2813 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696874951?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+new+perspective+on+ancient+Martian+volcanism%3B+evidence+for+supervolcanoes+in+Arabia+Terra%2C+Mars&rft.au=Michalski%2C+J+R%3BBleacher%2C+J+E%3BWright%2C+S+P%3BAnonymous&rft.aulast=Michalski&rft.aufirst=J&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - Number of references - 4 N1 - PubXState - DC N1 - Last updated - 2015-07-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Meteoritic and geologic context of the Chelyabinsk near-Earth asteroid air burst AN - 1696874547; 2015-066559 AB - Estimating the hazards of potential near-Earth asteroid (NEA) air burst and impact cratering events have been difficult. Current estimates of blast damage (e.g., [1]) rely on uncertain impact energies for events like Sikhote-Alin (1947), Tunguska (1908), and Barringer Meteorite Crater ( approximately 50 ka). The Chelyabinsk air burst event of an LL-chondrite NEA on 15 February 2013 provides a calibration point for enhancing those assessments. U.S. Government sensors indicate the impacting NEA had a velocity of 18.6 km/s and kinetic energy approximately 440 kt [2] with a total energy of possibly 500 kt. Using average bulk densities of LL-chondrite falls (3.22 g/cm (super 3) ) and S-class main belt asteroids (2.7 g/cm (super 3) ) [3], we derive an average diameter of 18.6 and 20 m, respectively. If the density was similar to that of rubble-pile LL-chondritic NEA Itokawa (1.9 g/cm (super 3) [4]) or rubble-pile binary NEAs ( approximately 1.5 g/cm (super 3) ), then the diameter may have been as large as 22 to 24 m. The strength of impacting NEA may be limited to structural flaws, like fractures and material contrasts (e.g., [5]); indeed, fragmental meteoroids preferentially produce meteorite showers. Not surprisingly, Chelyabinsk is a brecciated LL-chondrite and cross-cut with impact melt veins that were generated by older collisional events. Impact-generated cataclasis produced a breccia of light-colored chondrule-bearing clasts with sub-millimeter-wide fractures and silicate-rich shock melt veins, some of which form melt pockets where they intersect. Those clasts are separated by thin, sub-millimeter-wide channels of dark-colored matrix and centimeter-wide swaths of vesiculated and heterogeneously quenched impact melt. Catastrophic fragmentation of these types of NEA can produce ground-level air blast effects if that fragmentation occurs at a sufficiently low altitude. Based on pre-Chelyabinsk scaling [1], blast damage over an area of 10 (super 2) to 10 (super 3) km (super 2) is expected for a 440-500 kt event. The 20-meter-diameter Chelyabinsk meteoroid was composed of LL-type material, similar to that re-covered from the 540-m-long Itokawa asteroid [6]. Both of those NEA were derived from one or more parent bodies >100 km diameter(s). Over 5,000 samples from an LL-chondrite parent body(ies) exist. Collisional events at 4.35-3.9 Ga are well-documented and several younger events have been suggested [7]. Whether one of those events or a separate event is responsible for the impact melt in Chelyabinsk is, as yet, unclear, but Ar-Ar analyses of the clasts and melt within Chelyabinsk are underway. JF - American Geophysical Union Fall Meeting AU - Kring, D A AU - Swindle, T D AU - Zolensky, M E AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract NH21D EP - 01 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696874547?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Meteoritic+and+geologic+context+of+the+Chelyabinsk+near-Earth+asteroid+air+burst&rft.au=Kring%2C+D+A%3BSwindle%2C+T+D%3BZolensky%2C+M+E%3BAnonymous&rft.aulast=Kring&rft.aufirst=D&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Early detection of tsunami scales using GPS AN - 1696874343; 2015-066677 AB - This talk reviews how tsunamis form from earthquakes and how GPS technologies can be used to detect tsunami energy scales in real time. Most tsunami fatalities occur in near-field communities of earthquakes at offshore faults. Tsunami early warning is key for reducing the number of fatalities. Unfortunately, an earthquake's magnitude often does not gauge the resulting tsunami power. Here we show that real-time GPS stations along coastlines are able to detect seafloor motions due to big earthquakes, and that the detected seafloor displacements are able to determine tsunami energy and scales instantaneously for early warnings. Our method focuses on estimating tsunami energy directly from seafloor motions because a tsunami's potential or scale, no matter how it is defined, has to be proportional to the tsunami energy. Since seafloor motions are the only source of a tsunami, their estimation directly relates to the mechanism that generates tsunamis; therefore, it is a proper way of identifying earthquakes that are capable of triggering tsunamis, while being able to discriminate those particular earthquakes from false alarms. Examples of detecting the tsunami energy scales for the 2004 Sumatra M9.1 earthquake, the 2005 Nias M8.7 earthquake, the 2010 M8.8 Chilean earthquake, and the 2011 M9.0 Tohoku-Oki earthquake will be presented. JF - American Geophysical Union Fall Meeting AU - Song, Y AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract NH43A EP - 1729 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696874343?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Early+detection+of+tsunami+scales+using+GPS&rft.au=Song%2C+Y%3BAnonymous&rft.aulast=Song&rft.aufirst=Y&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Camera trap records of animal activity prior to a M=7 earthquake in northern Peru AN - 1696874297; 2015-066569 AB - Earthquake (EQ) preparation is associated with geophysical changes occurring over many scales. Some pre-earthquake (pre-EQ) processes affect the ionosphere, others leave their mark on biota. We report (i) on ionospheric anomalies recorded prior to the M=7 Contamana EQ [1] in North-Eastern Peru, 134 km deep, associated with the subduction of the Nazca plate underneath the Northern Andes, (ii) on changes in animal activity recorded in the Yanachaga National Park, about 320 km from the EQ epicentre, over a 30 day period leading up to the M=7 seismic event. Night-time Very Low Frequency (VLF) phase data were analyzed for the period 01 June to 31 Oct. 2011 using propagation paths passing close to the Yanachaga Park from the NAA emitter (USA) to receivers PIU in Piura and PLO in Lima (Peru). Ionospheric phase perturbations were observed starting 2 weeks before the EQ with periodicities from few tens of secs to few minutes. Animal activity data were obtained by evaluating the images of a cluster of 10 motion-triggered cameras of the Tropical Ecology Assessment and Monitoring Network www.teamnetwork.org. We analyzed 1359 photographic records for the pre-EQ period and 1491 photographic records for a control period with low seismicity. Animal activity started to noticeably decline 3 weeks before the EQ. Different animal species were found to react differently. The number of rodents declined to zero about one week before the EQ and so did the number of tapirs. Armadillos, a burrowing animal, were recorded in larger numbers. Though the armadillos were presumably also flushed out of their holes, they apparently did not hide like the rodents. We discuss the results in the context of recent advances in solid state physics, which provide plausible mechanisms for pre-EQ ionospheric anomalies and for changes in animal behavior. JF - American Geophysical Union Fall Meeting AU - Grant, R AU - Raulin, J AU - Freund, F AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract NH22A EP - 05 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696874297?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Camera+trap+records+of+animal+activity+prior+to+a+M%3D7+earthquake+in+northern+Peru&rft.au=Grant%2C+R%3BRaulin%2C+J%3BFreund%2C+F%3BAnonymous&rft.aulast=Grant&rft.aufirst=R&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Application of remotely sensed data for real-time landslide hazard assessment over Mesoamerica AN - 1696874231; 2015-066554 AB - Over the past five years, rainfall-triggered landslides have caused over 16,000 fatalities in 65 countries and have resulted in higher annual property losses than any other natural disaster. Yet while hurricanes and earthquakes have global monitoring systems in place to alert disaster response agencies, governments and regional humanitarian groups of potential disasters and related impacts, no such real-time monitoring system exists for rainfall-triggered landslides. This research seeks to advance the use and application of remotely sensed data and build upon existing modeling efforts to create a robust landslide hazard assessment system with the goal of better informing decision-making and disaster response agencies on landslide hazards at the regional scale. This system outputs a straightforward, easily-interpreted set of landslide hazard assessment products available in near real-time for the Mesoamerica region that can be used to both identify landslide-prone areas and forecast the potential location and timing of landslide initiation in the future. This research presents the prototype regional model tested over seven countries in Central America using satellite-based information including Tropical Rainfall Measurement Mission (TRMM) near real-time rainfall, topography data, modeled soil moisture, and geologic information. These variables are integrated within a simple algorithm framework and model outputs provide a probabilistic representation of potential landslide activity over the region. This presentation summarizes the preliminary results of this modeling framework, discusses the utility of these products for landslide hazard characterization, and outlines the path forward for this modeling approach. JF - American Geophysical Union Fall Meeting AU - Bach Kirschbaum, D AU - Yatheendradas, S AU - Cepeda, J M AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract NH21C EP - 02 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696874231?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Application+of+remotely+sensed+data+for+real-time+landslide+hazard+assessment+over+Mesoamerica&rft.au=Bach+Kirschbaum%2C+D%3BYatheendradas%2C+S%3BCepeda%2C+J+M%3BAnonymous&rft.aulast=Bach+Kirschbaum&rft.aufirst=D&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - International space station instruments collect imagery of natural disasters AN - 1696874043; 2015-066706 AB - A new focus for the International Space Station (ISS) is conducting basic and applied research that directly benefits Earth's citizenry. In the Earth Sciences, one such activity is collecting remotely sensed imagery of disaster areas and making those data immediately available through the USGS Hazards Data Distribution System, especially in response to activations of the International Charter for Space and Major Disasters (known informally as the "International Disaster Charter", or IDC). The ISS, together with other NASA orbital sensor assets, responds to IDC activations following notification by the USGS. Most of the activations are due to natural hazard events, including large floods, impacts of tropical systems, major fires, and volcanic eruptions and earthquakes. Through the ISS Program Science Office, we coordinate with ISS instrument teams for image acquisition using several imaging systems. As of 1 August 2013, we have successfully contributed imagery data in support of 14 Disaster Charter Activations, including regions in both Haiti and the east coast of the US impacted by Hurricane Sandy; flooding events in Russia, Mozambique, India, Germany and western Africa; and forest fires in Algeria and Ecuador. ISS-based sensors contributing data include the Hyperspectral Imager for the Coastal Ocean (HICO), the ISERV (ISS SERVIR Environmental Research and Visualization System) Pathfinder camera mounted in the US Window Observational Research Facility (WORF), the ISS Agricultural Camera (ISSAC), formerly operating from the WORF, and high resolution handheld camera photography collected by crew members (Crew Earth Observations). When orbital parameters and operations support data collection, ISS-based imagery adds to the resources available to disaster response teams and contributes to the public-domain record of these events for later analyses. JF - American Geophysical Union Fall Meeting AU - Evans, Cindy A AU - Stefanov, William L AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract NH43B EP - 1761 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696874043?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=International+space+station+instruments+collect+imagery+of+natural+disasters&rft.au=Evans%2C+Cindy+A%3BStefanov%2C+William+L%3BAnonymous&rft.aulast=Evans&rft.aufirst=Cindy&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Emerging soil and groundwater storage trends from GRACE with contributions to global mean sea level rise AN - 1696873302; 2015-066524 AB - We present a global picture of interannual variations and emerging trends in water storage for the world's major river basins and groundwater aquifers derived from the NASA GRACE satellite mission. Findings are placed in a context of changing climate, population growth and human water management. We find that many of the world's major mid-latitude aquifers show depletion signals over the 2003-2013 period, posing new challenges for sustainable water management. Concurrently, several high and low-latitude regions demonstrate increasing water storage due to changing hydrological variability. Although our results are consistent with observations of alpine glacial melt and groundwater depletion around the world, we find that global water losses from these regions are mostly compensated by storage gains at high and low latitudes. During the GRACE record (2003-2013), using "top-down" estimates of changing global land mass, we find that recent land contributions to global mean sea level rise are not significantly different from zero. JF - American Geophysical Union Fall Meeting AU - Reager, J T AU - de Linage, C AU - Lo, M AU - Voss, K AU - Swenson, S C AU - Chambers, D P AU - Rodell, M AU - Famiglietti, J S AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract H51S EP - 06 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696873302?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Emerging+soil+and+groundwater+storage+trends+from+GRACE+with+contributions+to+global+mean+sea+level+rise&rft.au=Reager%2C+J+T%3Bde+Linage%2C+C%3BLo%2C+M%3BVoss%2C+K%3BSwenson%2C+S+C%3BChambers%2C+D+P%3BRodell%2C+M%3BFamiglietti%2C+J+S%3BAnonymous&rft.aulast=Reager&rft.aufirst=J&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Trace gases; a warning signs of impending major seismic activity AN - 1696872694; 2015-066570 AB - Seismological models can predict future earthquakes only with wide uncertainty windows, typically on the order of decades to centuries. To improve short-term earthquake forecasts, it is essential to understand the non-seismic processes that take place in Earth's crust during the build-up of tectonic stresses. Days prior to the January 2001 M 7.6 Gujurat earthquake in India, there was a significant increase in the regional CO concentration, reaching 240 ppbv over a 100 squared kilometers, as derived from data of the MOPITT sensor onboard the NASA Terra satellite. A possible explanation for these observations is that when stresses in Earth's crust are building, positive hole charge carriers are activated, which are highly mobile and spread from deep below the earth to the surface. Positive holes act as highly oxidizing oxygen radicals, oxidizing water to hydrogen peroxide. It is hypothesized that, as positive hole charge carriers arrive from below and traverse the soil, they are expected to oxidize soil organics, converting aliphatics to ketones, formaldehyde, CO and CO2. This is tested by using a closed chamber with a slab of gabbro rock. Ultrasound generated by a pair of 50 W, 40 kHz piezoelectric transducers, applied to one end of the gabbro slab was used to activate the positive holes. This created a high concentration of positive holes at the end of the rock that the electrical conductivity through the rock increased more than 1000-fold, while the increase in conductivity through the other end of the gabbro slab was on the order of 100-fold. On the other end of the slab, rock dust and various soils were placed. A stainless steel mesh was also placed over the soil and dust to allow a current to flow through the granular material. When the far end of the slab was subjected to the ultrasound, currents as large as 250 nA were recorded flowing through the length of the gabbro slab and through the dust/soil pile. Dry dust/soil and dust samples impregnated with isopropanol and with a highly reduced butyn containing triple-bonded C and an aromatic ring were used. Multiple tests were conducted to study the interaction of stressed-activated positive hole charge carriers with organic versus inorganic and dry versus moist materials. This study suggests that the appearance of certain trace gases may be useful as a pre-earthquake indicator. JF - American Geophysical Union Fall Meeting AU - Baijnath, J AU - Freund, F AU - Li, J AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract NH22A EP - 06 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696872694?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Trace+gases%3B+a+warning+signs+of+impending+major+seismic+activity&rft.au=Baijnath%2C+J%3BFreund%2C+F%3BLi%2C+J%3BAnonymous&rft.aulast=Baijnath&rft.aufirst=J&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - XANES measurements of Cr valence in olivine and their applications to planetary basalts AN - 1692746206; 2015-062994 AB - The oxidation state and partitioning behavior of trace Cr in terrestrial and planetary basaltic magmas has long been a subject of petrologic inquiry. We have performed a series of experiments designed to examine the relationship between oxygen fugacity and the ratio of divalent to trivalent Cr present in olivine crystals grown from a basaltic liquid. The experimental olivine crystals were grown at fO2 values ranging from IW-1 to IW+3.4. The melt composition used in this work was modeled after the bulk composition of the primitive, basaltic martian meteorite Yamato 980459 (Y-98). Chromium valence in the olivine crystals was measured with X-ray-Absorption-Near-Edge-Spectroscopy (XANES) at the Advanced Photon Source, Argonne National Laboratory. Chromium K-edge XANES data were acquired with the x-ray microprobe of GSECARS beamline 13-ID-E. Beam focusing was accomplished with dynamically-figured Kirkpatrick-Baez focusing mirrors; this configuration yielded a beam focused to a final spot size of approximately 4 mu m2. Results from the XANES measurements indicate that the ratio of divalent to trivalent Cr in the olivine is systematically correlated with fO2 in a manner that is consistent with the expected redox systematics for Cr2+/Cr3+ in the melt. In this way, measurements of the Cr2+/Cr3+ in olivine phenocrysts can indirectly reveal information about the Cr valence ratio and fO2 the liquid from which it grew even in the absence of a quenched melt phase. Although the results from the experiments presented in this work specifically apply to the Yamato 98 parental liquid, the concepts and XANES analytical techniques used in this study present a novel, generalized methodology that may be applicable to any olivine-bearing basalt. Furthermore, the XANES based measurements are made on a micron-scale, thus potential changes of the Cr2+/Cr3+ in the melt occurring during crystallization may be recorded in detail. JF - American Geophysical Union Fall Meeting AU - Bell, A S AU - Burger, P V AU - Le, Loan AU - Shearer, C K AU - Papike, J AU - Sutton, S R AU - Newville, M AU - Jones, John H AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract MR44A EP - 03 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692746206?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=XANES+measurements+of+Cr+valence+in+olivine+and+their+applications+to+planetary+basalts&rft.au=Bell%2C+A+S%3BBurger%2C+P+V%3BLe%2C+Loan%3BShearer%2C+C+K%3BPapike%2C+J%3BSutton%2C+S+R%3BNewville%2C+M%3BJones%2C+John+H%3BAnonymous&rft.aulast=Bell&rft.aufirst=A&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - 1/f and the earthquake problem; scaling constraints to facilitate operational earthquake forecasting AN - 1692744870; 2015-063023 AB - The difficulty of forecasting earthquakes can fundamentally be attributed to the self-similar, or "1/f", nature of seismic sequences. Specifically, the rate of occurrence of earthquakes is inversely proportional to their magnitude m, or more accurately to their scalar moment M. With respect to this "1/f problem," it can be argued that catalog selection (or equivalently, determining catalog constraints) constitutes the most significant challenge to seismicity based earthquake forecasting. Here, we address and introduce a potential solution to this most daunting problem. Specifically, we introduce a framework to constrain, or partition, an earthquake catalog (a study region) in order to resolve local seismicity. In particular, we combine Gutenberg-Richter (GR), rupture length, and Omori scaling with various empirical measurements to relate the size (spatial and temporal extents) of a study area (or bins within a study area), in combination with a metric to quantify rate trends in local seismicity, to the local earthquake magnitude potential - the magnitudes of earthquakes the region is expected to experience. From this, we introduce a new type of time dependent hazard map for which the tuning parameter space is nearly fully constrained. In a similar fashion, by combining various scaling relations and also by incorporating finite extents (rupture length, area, and duration) as constraints, we develop a method to estimate the Omori (temporal) and spatial aftershock decay parameters as a function of the parent earthquake's magnitude m. From this formulation, we develop an ETAS type model that overcomes many point-source limitations of contemporary ETAS. These models demonstrate promise with respect to earthquake forecasting applications. Moreover, the methods employed suggest a general framework whereby earthquake and other complex-system, 1/f type, problems can be constrained from scaling relations and finite extents. JF - American Geophysical Union Fall Meeting AU - Yoder, M R AU - Rundle, J B AU - Glasscoe, Margaret T AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract NG11A EP - 1582 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692744870?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=1%2Ff+and+the+earthquake+problem%3B+scaling+constraints+to+facilitate+operational+earthquake+forecasting&rft.au=Yoder%2C+M+R%3BRundle%2C+J+B%3BGlasscoe%2C+Margaret+T%3BAnonymous&rft.aulast=Yoder&rft.aufirst=M&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - Detection of natural hazards generated TEC perturbations and related new applications AN - 1692744672; 2015-063123 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. This continuing research is expected to provide early warning for tsunamis, earthquakes, volcanic eruptions, and meteor impacts, for example, using GPS and other global navigation satellite systems. We will demonstrate new and upcoming applications including recent natural hazards and artificial explosions that generated TEC perturbations to perform state-of-the-art imaging and modeling of earthquakes, tsunamis and meteor impacts. 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. JF - American Geophysical Union Fall Meeting AU - Komjathy, Attila AU - Yang, Y AU - Langley, R B AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract NH13C EP - 1627 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692744672?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Detection+of+natural+hazards+generated+TEC+perturbations+and+related+new+applications&rft.au=Komjathy%2C+Attila%3BYang%2C+Y%3BLangley%2C+R+B%3BAnonymous&rft.aulast=Komjathy&rft.aufirst=Attila&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - Early-mid Holocene context for modern and future surface mass balance of the Greenland ice sheet AN - 1692743141; 2015-058845 AB - The summer of 2012 resulted in record surface ablation on the Greenland Ice Sheet (GrIS), with nearly the entire ice sheet area experiencing surface melt conditions during mid-July. Whether this event is part of a semi-regular cycle of anomalously warm conditions or a larger future trend of enhanced surface melt remains to be seen. Here, we provide context for such surface melt events and the related contribution to sea-level rise through the simulation of GrIS surface mass balance during the early-mid Holocene (9 and 6 ka) with elevated orbital forcing relative to today. We use equilibrium AOGCM output to force an energy moisture balance model of the GrIS. The model simulates a significant reduction in surface mass balance at 9 and 6 ka relative to our preindustrial control run. Such melt anomalies are consistent with an increased frequency of melt layers from the GISP2 ice core, as well as with ice margin chronologies indicating enhanced retreat during this time. We will compare these simulations of past surface mass balance with present and future predictions using the climate output from the new AR5 simulations with elevated radiative forcing due to anthropogenic greenhouse gases. JF - American Geophysical Union Fall Meeting AU - Ullman, D J AU - Carlson, A E AU - LeGrande, A N AU - Anslow, Faron S AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract GC31A EP - 1015 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692743141?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Early-mid+Holocene+context+for+modern+and+future+surface+mass+balance+of+the+Greenland+ice+sheet&rft.au=Ullman%2C+D+J%3BCarlson%2C+A+E%3BLeGrande%2C+A+N%3BAnslow%2C+Faron+S%3BAnonymous&rft.aulast=Ullman&rft.aufirst=D&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - Are mid-lithospheric discontinuities (MLDs) caused by layers of frozen-in melts? AN - 1692742787; 2015-059224 AB - A Mid-Lithospheric Discontinuity (MLD) has been observed at a depth of approximately 90 km within the continental lithosphere by a wide variety of seismic techniques, including shear wave anisotropy, P and S receiver functions, active-source seismic experiments, SS and PP precursors, and ScS reverberation phases. Proposed geological mechanisms for explaining the MLD include the presence of melt, relict subduction zone accretionary structures, or an abrupt change in composition from frozen-in melts and metasomatism. During the 2013 CIDER summer workshop, our working group began an investigation of the MLD by compiling a seismological database of where the interface has been observed, methods used to identify it, and characteristics (depth, velocity contrast, gradients) of the observations. Additionally, we created a petrological database of xenoliths that originated immediately above, below, and within the vicinity of the seismologically observed structure. We find that regions of thick continental lithosphere, exhibit evidence for an abrupt decrease in seismic shear velocity ( approximately 5% over 10-20 km) at 60-160 km depth, with the majority of observations within approximately 80-90 km. We used the petrological and seismological constraints to then assess the feasibility of a metasomatic and frozen-in melt layer associated with the MLD. We used shear wave velocity data combined with compiled petrological data to determine which hydrous minerals are most likely to have an impact on the shear velocity at the MLD. Preliminary calculations at 1 GPa show that by increasing the composition of hydrous minerals, such as phlogopite, by 5-20% in the rock, noticeable decreases in shear velocity are produced. To further test the feasibility of this explanation, we used standard thermobarometry methods to determine xenolith formation depth for samples containing amphibole and phlogopite, comparing them to the expected MLD pressure range ( approximately 2-5 GPa; 60-160 km). We find that only 25% of amphibole samples formed within the MLD zone, while 90% of phlogopite-bearing xenoliths were formed at approximately 2-5 GPa--suggesting that phlogopite is a possible candidate for decreased velocity observed at MLD depths. We also tested the possibility that frozen-in melts decrease velocities at this depth range using Perple-X petrological modeling. Preliminary results suggest that frozen carbon-rich melts are capable of producing the approximately 5% decrease in shear velocity at MLD depths. We thus conclude that the presence of frozen carbon-rich melts and/or hydrous minerals are viable mechanisms for the creation of the mid-lithospheric discontinuity. JF - American Geophysical Union Fall Meeting AU - Rader, E L AU - Frost, D A AU - Cheng, C AU - Yu, C AU - Menard, Julie AU - Emry, E AU - Schmerr, Nicholas C AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract MR24B EP - 08 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692742787?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Are+mid-lithospheric+discontinuities+%28MLDs%29+caused+by+layers+of+frozen-in+melts%3F&rft.au=Rader%2C+E+L%3BFrost%2C+D+A%3BCheng%2C+C%3BYu%2C+C%3BMenard%2C+Julie%3BEmry%2C+E%3BSchmerr%2C+Nicholas+C%3BAnonymous&rft.aulast=Rader&rft.aufirst=E&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - Applying the emerging provenance and context content standard to physical objects in a core repository; a use case to demonstrate validity of broader community adaptation AN - 1689591204; 2015-056541 AB - The Data Stewardship Committee (DSC) within the Earth Science Information Partners' (ESIP) Federation helped in part to develop the emerging Provenance and Context Content Standard (PCCS). The focus of PCCS is on the "what" that needs to be preserved, rather than the "how." The input to the development of the PCCS has been based on ESIP members' experience with NASA and NOAA missions. The intent has always been to identify a more comprehensive set of items to evolve a robust standard. PCCS development has primarily focused on satellite remote sensing data. However, the DSC recognizes the need to ensure coverage of other types of geoscience data to expand the applicability of PCCS throughout the geoscience data community. Here, we explore the viability of the current PCCS to application towards physical objects within a core repository. We apply the PCCS as a use case to a subset of the cores housed in the Geological Survey of Alabama's core collection. Although the term "use case" may be used in different ways, here we are using the term to define an approach to develop the functional specifications of a system. The model or standard is carried through to design and implementation, and then applied to a particular situation to test the standard for applied use. The current PCCS has identified eight high-level categories, with several content items under each category being further defined. Information for these content items includes a definition and description, an indication of why the item needs to be preserved, quality criteria, and priority for preservation of the item. For the use case of applying PCCS to physical objects in a core repository, we examine the aspects of each item for relevance with respect to the collection. For example, under Category 1, Preflight/Pre-operations, currently identified content items include "Instrument Description" and "Preflight/pre-operational Calibration Data." With respect to the GSA core repository, these might be mapped to "Rig Type/Coring Method", and "Location/Elevation/Tool Calibration." Further investigation will be required to determine how to better define the content mappings. By taking each high-level category and mapping identified content items to content items within our core repository, we shall detail areas in which the emerging PCCS is robust and works well, and areas in which it is weaker and might need refinement or definition of additional categories or content items to be more broadly applied to a wider cross-section of geoscience data. JF - American Geophysical Union Fall Meeting AU - Hills, D J AU - Ramdeen, S AU - Ramapriyan, H K AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract IN11D EP - 07 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 15:Miscellaneous UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1689591204?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Applying+the+emerging+provenance+and+context+content+standard+to+physical+objects+in+a+core+repository%3B+a+use+case+to+demonstrate+validity+of+broader+community+adaptation&rft.au=Hills%2C+D+J%3BRamdeen%2C+S%3BRamapriyan%2C+H+K%3BAnonymous&rft.aulast=Hills&rft.aufirst=D&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-06-18 N1 - CODEN - #07548 ER - TY - JOUR T1 - Recent advances in the GRACE data assimilation system AN - 1689589672; 2015-056415 AB - Anomalies in Terrestrial Water Storage (TWS) derived from the Gravity Recovery and Climate Experiment (GRACE) mission have been used effectively to study hydrologic variability and trends at basin scale across diverse climatic and geologic conditions. Many hydrology and water resources applications, however, require water storage estimates at higher spatial resolution, greater temporal frequency, and with greater physical specificity (e.g., groundwater versus soil moisture versus snow) than GRACE alone can offer. The GRACE Data Assimilation System (GRACE-DAS) was developed to merge GRACE information on large-scale TWS anomalies with physically-based advanced Land Surface Models in order to improve model simulation of water storage while disaggregating and downscaling the raw GRACE TWS estimate. The primary assimilation algorithm is a variant of the ensemble Kalman Smoother. In recent years the system has been applied to studies of water resources and drought monitoring over four different continents. These experiences have led to refinements in the assimilation system that include modifications to land surface model parameters and the treatment of irrigation withdrawals, adjustments in the assimilation algorithm for snow updates, and, most recently, the implementation of a gridded observation assimilation capability that allows for a more flexible application of the system. This presentation will provide an overview of current GRACE-DAS capabilities, report on recent innovations in the modeling system, and describe future directions in GRACE data assimilation research and applications. JF - American Geophysical Union Fall Meeting AU - Zaitchik, B F AU - Rodell, M AU - Kumar, S AU - Reichle, R H AU - Bolten, J D AU - Bergaoui, K AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract H42C EP - 02 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1689589672?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+advances+in+the+GRACE+data+assimilation+system&rft.au=Zaitchik%2C+B+F%3BRodell%2C+M%3BKumar%2C+S%3BReichle%2C+R+H%3BBolten%2C+J+D%3BBergaoui%2C+K%3BAnonymous&rft.aulast=Zaitchik&rft.aufirst=B&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-06-18 N1 - CODEN - #07548 ER - TY - JOUR T1 - Improvements in space geodesy data discovery at the CDDIS AN - 1686059549; 2015-050757 AB - The Crustal Dynamics Data Information System (CDDIS) supports data archiving and distribution activities for the space geodesy and geodynamics community. The archive enables scientific research through access to GNSS, laser ranging, VLBI, and DORIS data sets and products derived from these data. The CDDIS is one of NASA's Earth Observing System Data and Information System (EOSDIS) distributed data centers; EOSDIS data centers serve a diverse user community and are tasked to provide facilities to search and access science data and products. The CDDIS data system and its archive are vital components to many national and international science communities, in particular NASA's Space Geodesy Project and several of the operational services within the International Association of Geodesy (IAG) and its project the Global Geodetic Observing System (GGOS), including the International DORIS Service (IDS), the International GNSS Service (IGS), the International Laser Ranging Service (ILRS), the International VLBI Service for Geodesy and Astrometry (IVS), and the International Earth Rotation Service (IERS). Several activities are nearing completion at the CDDIS to aid users in data discovery, both within the international space geodesy community and beyond. This poster will include background information about the system and its user communities, archive contents and updates, enhancements for data discovery, and future plans. JF - American Geophysical Union Fall Meeting AU - Noll, C E AU - Dube, M P AU - Pollack, N AU - Tyahla, L AU - Michael, B P AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract IN31C EP - 1520 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1686059549?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Improvements+in+space+geodesy+data+discovery+at+the+CDDIS&rft.au=Noll%2C+C+E%3BDube%2C+M+P%3BPollack%2C+N%3BTyahla%2C+L%3BMichael%2C+B+P%3BAnonymous&rft.aulast=Noll&rft.aufirst=C&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-06-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - High water contents in the Siberian cratonic mantle; an FTIR study of Udachnaya peridotite xenoliths AN - 1686059170; 2015-050881 AB - Water is believed to be a key factor controlling the long-term stability of cratonic lithosphere [1], but mechanisms responsible for the water content distribution in the mantle remain poorly constrained. Water contents were obtained by FTIR in olivine, pyroxene and garnet for 20 well-characterized peridotite xenoliths from the Udachnaya kimberlite (central Siberian craton) and equilibrated at 2-7 GPa [2]. Water contents in minerals do not appear to be related to interaction with the host kimberlite. Diffusion modeling indicates that the core of olivines preserved their original water contents. The Udachnaya peridotites show a broad range of water contents in olivine (6.5+ or -1.1 - 323+ or -65 ppm H2O (2sigma )), and garnet (0 - 23+ or -6 ppm H2O). The water contents of olivine and garnet are positively correlated with modal clinopyroxene, garnet and FeO in olivine. Water-rich garnets are also rich in middle rare earth elements. This is interpreted as the result of interaction between residual peridotites and water rich-melts, consistent with modal and cryptic metasomatism evidenced in the Siberian cratonic mantle [3-4]. The most water-rich Udachnaya minerals contain 2 to 3 times more water than those from the Kaapvaal craton, the only craton with an intact mantle root for which water data is available [5-6]. The highest water contents in olivine and orthopyroxene in this study (> or = 300 ppm) are found at the bottom of the lithosphere (> 6.5 GPa). This is in contrast with the Kaapvaal craton where the olivines of peridotites equilibrated at > 6.4 GPa have 6 GPa is lower or similar (8.4X 1016 to 8.0X 1018 Pa.s-1) to that of the asthenosphere (< or = 3.7x1018 Pa.s-1 [7]). Such lithologies would not be able to resist delamination by the convecting asthenosphere. However, seismology studies [8] as well as the high equilibration pressures of our samples indicate that the Udachnaya cratonic lithosphere is 220-250 km thick. Consequently, the water-rich peridotites are likely not representative of the overall Siberian cratonic lithosphere. Their composition is linked to spatially limited melt metasomatism in mantle regions above asthenospheric upwellings responsible for the kimberlite magmatism prior to their ascent and eruption. [1] Pollack (1986) EPSL 80,175-182. [2] Ionov et al., (2010) JP 51, 2177-2210. [3] Doucet et al. (2012) EPSL 359-360, 359-360. [4] Doucet et al. (2013) CMP 165, 1225-1242. [5] Peslier et al. (2010) Nature 467, 78-81. [6] Baptiste et al. (2012) Lithos 149, 31-50. [7] Larsen et al. (2005) EPSL 237,548-560. [8] Priestley et al. (2003) GRL 30, 1118. JF - American Geophysical Union Fall Meeting AU - Doucet, L S AU - Peslier, A H AU - Ionov, D A AU - Brandon, A D AU - Golovin, A V AU - Ashchepkov, I V AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract T23A EP - 2563 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1686059170?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+water+contents+in+the+Siberian+cratonic+mantle%3B+an+FTIR+study+of+Udachnaya+peridotite+xenoliths&rft.au=Doucet%2C+L+S%3BPeslier%2C+A+H%3BIonov%2C+D+A%3BBrandon%2C+A+D%3BGolovin%2C+A+V%3BAshchepkov%2C+I+V%3BAnonymous&rft.aulast=Doucet&rft.aufirst=L&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - Number of references - 8 N1 - PubXState - DC N1 - Last updated - 2015-06-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - Watershed scale analyses of mangrove ecosystems in the Americas and the contributing upland area land cover change over time AN - 1686059118; 2015-050692 AB - Ecosystems throughout the world have been under pressure by drivers of change both natural and anthropogenic. Coastal and marine ecosystems such as mangrove forests contribute to the biodiversity of land and ocean habitats at various scales, acting as direct link to biogeochemical cycles of both upland and coastal regions. All of the positive and negative drivers of change of both natural and anthropogenic, within watershed and political boundaries, play a role in the health and function of these ecosystems. As a result, they are among the most rapidly changing landscapes in the Americas. This research presents a watershed scale monitoring approach of mangrove ecosystems using datasets that contain several sources of remotely sensed data and intensive ecological field data. Spatially exclusive decision tree models were used to assess and monitor land use and land cover change in mangrove ecosystems for different regions of the Americas, representing varying geomorphologic settings across a latitudinal gradient. The integration of ecological, hydrological, and geomorphologic characteristics of the contributing areas to these critical downstream ecosystems is crucial for both mapping and monitoring these vulnerable ecosystems. This research develops the scientific and technical framework needed for advancement in regional scale natural resource management and valuation, informed policy making, and protection of coastal ecosystems. This research also provides a foundation for the development of forecast models to simulate and assess mangrove area, health, and viability changes under different land management and climate scenarios. JF - American Geophysical Union Fall Meeting AU - Corcoran, J AU - Simard, M AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract H41C EP - 1251 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1686059118?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Watershed+scale+analyses+of+mangrove+ecosystems+in+the+Americas+and+the+contributing+upland+area+land+cover+change+over+time&rft.au=Corcoran%2C+J%3BSimard%2C+M%3BAnonymous&rft.aulast=Corcoran&rft.aufirst=J&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-06-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - Surface and subsurface water storage changes over the central Congo Basin revealed by integrating GRACE, Envisat altimetry, and PALSAR ScanSAR observations AN - 1686058724; 2015-046226 AB - The Congo Basin is the world's third largest in size ( approximately 3.7 million km2), and second only to the Amazon River in discharge ( approximately 40,200 m3 s-1 annual average). The impact and connections of this hydrologic flux with the regional and global climate, biogeochemical cycles, and terrestrial water storages are clearly of great importance. However, little is known about the hydrology and hydraulics of the Congo Basin. The Congo Basin has not experienced the same degree of new research compared to the Amazon in spite of its enormous size because the lack of in situ has limited our hydrologic understanding of the basin. In this study, we integrate multiple satellite measurements; terrestrial water storage (TWS) changes from GRACE, water level changes from radar altimeter, and inundated extents from PALSAR ScanSAR imagery to characterize and quantify TWS change and its surface and subsurface components over the central Congo Basin. Our results indicate that the annual variations of the TWS changes during the period of 2007-2010 range between 21 km3 and 31 km3, and mostly controlled by surface storage changes. Our result is in contrast with a study over another large tropical basin, the Negro River Basin, where the amplitude of the subsurface storage changes represents more than a third of the amplitude of TWS changes. Our findings will contribute to provide a basis for determining and predicting the impacts of climate change and deforestations on the distribution of terrestrial water stores and fluxes in the Congo Basin. JF - American Geophysical Union Fall Meeting AU - Lee, H AU - Jung, Hahnchul AU - Yuan, Ting AU - Beighley, Ed AU - Duan, J AU - Alsdorf, D E AU - Raoufi, R AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract G22B EP - 01 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1686058724?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Surface+and+subsurface+water+storage+changes+over+the+central+Congo+Basin+revealed+by+integrating+GRACE%2C+Envisat+altimetry%2C+and+PALSAR+ScanSAR+observations&rft.au=Lee%2C+H%3BJung%2C+Hahnchul%3BYuan%2C+Ting%3BBeighley%2C+Ed%3BDuan%2C+J%3BAlsdorf%2C+D+E%3BRaoufi%2C+R%3BAnonymous&rft.aulast=Lee&rft.aufirst=H&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-06-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - Small geophysical signals detected in differences of altimetric tides and bottom-pressure tides AN - 1686058290; 2015-046274 AB - Very precise tidal estimates derived from seafloor pressure measurements and from two decades of satellite altimetry are capable of revealing tiny, subtle signals in their differences. In particular, these differences can place constraints on models of atmospheric tides and solid tides. Such signals arise because altimetry is sensitive to the solid tide while bottom pressure (BP) is not, while BP is sensitive to the air tide while altimetry is not (not directly anyway). I have constructed a database of precise BP tide estimates from 151 deep-ocean stations, most based on multiple years of hourly data. The relationship between bottom pressure and equivalent sea-surface elevation must be carefully handled, since it depends on ocean stratification and the compressibility of seawater. The altimeter-BP rms differences are 5 mm or better. In these differences, the air tide is easily detected at the S1 and S2 periods and more marginally detected at the T2 and K1 periods (the latter represent seasonal sidelines of either S1 or S2); a comparison of various air-tide models favors one derived from recent 3-hourly ECMWF operational analyses. Results also show that altimetry can benefit from correcting for crustal loading by the S2 air tide; the signal is only 1.4 mm or less and has previously been ignored, but it is detectable in the altimeter-BP differences. Similarly altimetry must be corrected for the presence of the air tide in the dry troposphere correction. Finally differences also allow Love numbers to be estimated at the M2, O1, and K1 periods, with the latter clearly showing suppression from the free core-nutation resonance. However, recent estimates just published by Krasna and colleagues, using VLBI data, are far more accurate, in part because VLBI need not contend with large, possibly inconsistent ocean signals in their data. Our results could be improved once baroclininc tides are properly accounted for, but these tides, with wavelengths of order 100 km, are currently insufficiently known and may require wide-swath altimetry before they are accurately mapped. JF - American Geophysical Union Fall Meeting AU - Ray, Richard D AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract G23C EP - 06 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1686058290?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Small+geophysical+signals+detected+in+differences+of+altimetric+tides+and+bottom-pressure+tides&rft.au=Ray%2C+Richard+D%3BAnonymous&rft.aulast=Ray&rft.aufirst=Richard&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-06-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - Continental water storage variations in Africa from space gravity and altimetry measurements AN - 1686055734; 2015-046227 AB - Precision data from the GRACE (Gravity Recovery and Climate Experiment) mission, launched in March 2002, permit the recovery of continental water storage variations at high temporal and spatial resolution. Mass variations are directly inverted from the inter-satellite K-band range-rate (KBRR) data using a localized mascon approach. Using appropriate constraints, our regional solutions allow better temporal (10-day) and spatial (2-degrees) resolution, than the classical spherical harmonic solutions. In addition altimetry measurements allow the retrieval of the water level variations at a few centimeter level, for major lakes and reservoirs. Because of its smaller footprint (50 to 100 meters, depending on the laser period) compared to radar altimeters (several kilometers), ICESat (Ice, Cloud and Land Elevation satellite) laser altimetry is more suitable for the retrieval of water level variations of small inland bodies, and when water returns can be highly contaminated by land or vegetation. We combine these gravity and altimetry measurements with hydrology models and in-situ measurements in order to describe the continental water storage variations at seasonal timescales and also long-term variations in Africa. JF - American Geophysical Union Fall Meeting AU - Boy, J P AU - Carabajal, Claudia C AU - Luthcke, Scott B AU - Rowlands, David D AU - Sabaka, Terence J AU - Lemoine, Frank G AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract G22B EP - 02 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1686055734?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Continental+water+storage+variations+in+Africa+from+space+gravity+and+altimetry+measurements&rft.au=Boy%2C+J+P%3BCarabajal%2C+Claudia+C%3BLuthcke%2C+Scott+B%3BRowlands%2C+David+D%3BSabaka%2C+Terence+J%3BLemoine%2C+Frank+G%3BAnonymous&rft.aulast=Boy&rft.aufirst=J&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-06-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - Gravity changes associated with recent great earthquakes from a decade-long observation of GRACE gravity fields; inversion of the earthquake source parameters and constraint to the Earth's viscoelastic structure AN - 1686055710; 2015-046215 AB - We quantify gravity changes after great earthquakes present within the 11-year-long time-series of monthly global GRACE gravity fields. Using the normal-mode formulation, we present our estimates of the source parameters of moment tensor and double-couple for the events of the 2004 Sumatra-Andaman, 2007 Bengkulu, 2010 Maule, 2011 Tohoku-Oki, 2012 Indian Ocean strike-slip earthquakes. For the 2012 Indian Ocean earthquake (the first strike-slip event detected by GRACE), the GRACE gravity data delineate a composite moment of 1.9X1022 N-m regardless of centroid depth, comparing favorably with the total seismic moment of the main ruptures and aftershocks. The smallest event we successfully analyzed with GRACE was the 2007 Bengkulu earthquake with M0 nearly equal 5.0X1021 N-m. We found that the gravity data constrain the focal mechanism with the centroid only within the upper and lower crustal layers for thrust events. Deeper sources (i.e., in the upper mantle) could not reproduce the gravity observation as the larger rigidity and bulk modulus at mantle depths inhibit the interior from changing its volume, thus reducing the negative gravity component. Focal mechanisms and seismic moments obtained in this study represent the behavior of the sources on temporal and spatial scales exceeding the seismic and geodetic spectrum. In addition, the large-scale postseismic gravity changes following the 2004 Sumatra-Andaman, 2010 Maule, and 2011 Tohoku-Oki earthquakes were evident in the GRACE time-series of the moment tensor components. Our preferred interpretation of the long-wavelength postseismic gravity change is biviscous viscoelastic flow. We present our estimates of the Earth viscoelastic structures by delineating a range of transient and steady-state viscosities. Finally, we discuss how these solutions could be used to correct the GRACE observations for the studies on climate change. JF - American Geophysical Union Fall Meeting AU - Riva, R E M AU - Han, Shin-Chan AU - Sauber, Jeanne M AU - Okal, Emile A AU - Pollitz, F F AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract G21C EP - 05 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1686055710?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Gravity+changes+associated+with+recent+great+earthquakes+from+a+decade-long+observation+of+GRACE+gravity+fields%3B+inversion+of+the+earthquake+source+parameters+and+constraint+to+the+Earth%27s+viscoelastic+structure&rft.au=Riva%2C+R+E+M%3BHan%2C+Shin-Chan%3BSauber%2C+Jeanne+M%3BOkal%2C+Emile+A%3BPollitz%2C+F+F%3BAnonymous&rft.aulast=Riva&rft.aufirst=R+E&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-06-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - Seasonal and interannual variability of glacier mass loss in southern Alaska AN - 1680755902; 2015-043162 AB - Alaska's climate is changing and one of the most significant indications of this change has been the late 19th to early 21st century behavior of Alaskan glaciers. Over the last decade, Gravity Recovery and Climate Experiment (GRACE) gravity measurements have enabled estimates of regional ice loss trends in glaciated southern Alaska. However, higher-resolution in situ, aircraft, GPS and other satellite data are being used to study the basin-scale processes responsible for the observed broad-scale seasonal and inter-annual variability of GRACE-derived mass change. Specifically we report on the use Moderate-resolution Imaging Spectroradiometer (MODIS) Land Surface Temperature (LST) and Fractional Snow Cover (FSC) products, at a spatial scale of 1 km or less, to document the temporal and spatial evolution of seasonal processes over a time period that includes the GRACE observations (2002 to present). We use observations of cryospheric change over the last decade as input to 3-D viscoelastic Earth models of southern Alaska. In addition to glacial changes on a variety of temporal and spatial scales, southern Alaska is tectonically active with frequent large earthquakes. The gravimetric response, as well as the rate and orientation of crustal deformation, due to relaxation processes associated with inter-annual snow/ice changes, glacier wastage on time scales of years to decades, and large earthquakes (1964 Prince William Sound, M=9.2, 2002 Denali, Mw=7.9) will be discussed. JF - American Geophysical Union Fall Meeting AU - Sauber, Jeanne M AU - Hall, Dorothy K AU - Han, S AU - Luthcke, Scott B AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract G42A EP - 05 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680755902?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Seasonal+and+interannual+variability+of+glacier+mass+loss+in+southern+Alaska&rft.au=Sauber%2C+Jeanne+M%3BHall%2C+Dorothy+K%3BHan%2C+S%3BLuthcke%2C+Scott+B%3BAnonymous&rft.aulast=Sauber&rft.aufirst=Jeanne&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2016-10-25 N1 - CODEN - #07548 ER - TY - JOUR T1 - Anticipating future sea level rise and coastal storms in New York City AN - 1680755556; 2015-043193 AB - Hurricane Sandy caused 43 fatalities in New York City and $19 billion in damages. Mayor Michael Bloomberg responded by convening the second New York City Panel on Climate Change (NPCC2), to provide up-to-date climate information for the City's Special Initiative for Rebuilding and Resiliency (SIRR). The Mayor's proposed $20 billion plan aims to strengthen the City's resilience to coastal inundation. Accordingly, the NPCC2 scientific and technical support team generated a suite of temperature, precipitation, and sea level rise and extreme event projections through the 2050s. The NPCC2 sea level rise projections include contributions from ocean thermal expansion, dynamic changes in sea surface height, mass changes in glaciers, ice caps, and ice sheets, and land water storage. Local sea level changes induced by changes in ice mass include isostatic, gravitational, and rotational effects. Results are derived from CMIP5 model-based outputs, expert judgment, and literature surveys. Sea level at the Battery, lower Manhattan, is projected to rise by 7-31 in (17.8-78.7 cm) by the 2050s relative to 2000-2004 (10 to 90 percentile). As a result, flood heights above NAVD88 for the 100-year storm (stillwater plus waves) would rise from 15.0 ft (0.71 m) in the 2000s to 15.6-17.6 ft (4.8-5.4 m) by the 2050s (10-90 percentile). The annual chance of today's 100-year flood would increase from 1 to 1.4-5.0 percent by the 2050s. JF - American Geophysical Union Fall Meeting AU - Horton, Radley M AU - Gornitz, V AU - Bader, D AU - Little, C M AU - Oppenheimer, Michael AU - Patrick, L AU - Orton, Philip M AU - Rosenzweig, C AU - Solecki, W AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract GC33D EP - 06 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680755556?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Anticipating+future+sea+level+rise+and+coastal+storms+in+New+York+City&rft.au=Horton%2C+Radley+M%3BGornitz%2C+V%3BBader%2C+D%3BLittle%2C+C+M%3BOppenheimer%2C+Michael%3BPatrick%2C+L%3BOrton%2C+Philip+M%3BRosenzweig%2C+C%3BSolecki%2C+W%3BAnonymous&rft.aulast=Horton&rft.aufirst=Radley&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2016-10-25 N1 - CODEN - #07548 ER - TY - JOUR T1 - Line-of-sight gravity analysis of the inter-satellite tracking data from the Gravity Recovery And Interior Laboratory (GRAIL) mission and gravitational potential modeling from the Lunar Orbiter Laser Altimeter (LOLA) topography AN - 1680754215; 2015-040750 AB - We present a rigorous model of the line-of-sight (LOS) gravity difference between two co-orbiting spacecrafts determined in terms of inter-satellite range-acceleration measurements available from GRAIL. The precise orbit data are crucial for retrieving gravity difference from range-acceleration and for aligning the LOS data particularly in altitude. A relative orbit error of a few cm in position and a few tens mu m/s in velocity is commensurate with the GRAIL ranging instrument noise at a few mu Gal in LOS gravity difference. We quantify the Ka-band instrument noise characteristics, correction by orbital state vector, non-gravitational and tidal forces, and misalignment error along the orbital path. We also examined the LOLA topography data to compute the model gravitational potentials using two approaches; (1) higher-order expansion of finite amplitude relief using spherical harmonic representation of the global topography data (2) Direct integration of numerous tesseroids from the grid topography data. We compare both approaches to compute the high-degree gravitational potentials and discuss the advantage of the second method to exploit the radially- and laterally-variable density within the crust. The power spectrum, as well as the topography correlation and admittance are quantified by upward-continuing the topographic potential, forward-modeling the LOS gravity along the spacecraft trajectory (i.e., Bouguer correction), and comparing with the GRAIL LOS observations. Based on the LOS data analysis from the primary GRAIL mission, we found that the LOS gravity difference observation produced near unity correlation with topography potential out to degree 550, higher than the global estimate from L2 gravity solutions, over the areas covered by the low altitude orbit ( approximately 20 km). The crustal density was estimated to be 2500-2600 kg/m3 with regional variations of about 10%, by minimizing the Bouguer coherence of the GRAIL data at the degree band 150-300, agreeing with the result given in Wieczorek et al. [2013]. Systematic decrease in the density estimates by 3-4% or 100 kg/m3 was also observed at shorter wavelengths (degree band 300-500). To understand this, we test various gravitational potential models from topography with radial stratification of the bulk density, computed from the tesseroid integration approach. JF - American Geophysical Union Fall Meeting AU - Han, Shin-Chan AU - Holmes, S A AU - Neumann, Gregory A AU - Wieczorek, M A AU - Schmerr, Nicholas C AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract G31B EP - 08 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680754215?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Line-of-sight+gravity+analysis+of+the+inter-satellite+tracking+data+from+the+Gravity+Recovery+And+Interior+Laboratory+%28GRAIL%29+mission+and+gravitational+potential+modeling+from+the+Lunar+Orbiter+Laser+Altimeter+%28LOLA%29+topography&rft.au=Han%2C+Shin-Chan%3BHolmes%2C+S+A%3BNeumann%2C+Gregory+A%3BWieczorek%2C+M+A%3BSchmerr%2C+Nicholas+C%3BAnonymous&rft.aulast=Han&rft.aufirst=Shin-Chan&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2016-10-25 N1 - CODEN - #07548 ER - TY - JOUR T1 - Compositional stratification across the transition zone in the presence of whole-mantle convection AN - 1680752630; 2015-040641 AB - As a consequence of billions of years of subduction and stirring, the Earth's mantle is a mechanical mixture of materials ranging from harzburgite to peridotite to eclogite. While the eclogite content and, hence, the Mg/Si ratio of approximately 1.3 in the asthenosphere is well constrained, eclogite contents in the lower mantle may be significantly higher with proposed Mg/Si ratios 4% (per 100 K excess temperature) tend to stagnate in the depth range of 300-410 km, and deliver eclogite to the MTZ. Seismic evidence for this process near Hawaii comes from contrasts in physical properties across the 410 measured by underside reflections. Plumes with eclogite contents >6% (per 100 K excess temperature) are predicted to even fail to cross the mid upper mantle altogether. In contrast, mantle downwellings more efficiently transport eclogite back into the lower mantle, although they need to cross a depth range (from 660 to approximately 750 km) in which eclogite becomes positively buoyant. Numerical model results show that only the subset of slabs that stagnate at approximately 660 km depth for timescales > approximately 50 Myr (e.g., Farallon slab) can segregate through convective instability, with harzburgite rising and eclogite sinking to concentrate at the base of the MTZ. Slabs that directly enter the lower mantle (e.g., Tonga slab) instead do not segregate to carry eclogite into the deep. These dynamical mechanisms set up an eclogite filter with accumulation of eclogite in the MTZ, a density trap bordered above and below by maxima and minima in eclogite excess density, and upward fluxes of eclogite out of the MTZ smaller than downward fluxes. The associated accumulation of eclogite in the MTZ and lower mantle may not only balance the bulk silicate Earth's budget to near-chondritic values of approximately 1.0, but also implies a density increase of up to approximately 50 kg/m3 (i.e., for an eclogite content of 25% and Mg/Si approximately 1.0) at the post-garnet phase transition at 750-800 km depth. Such an increase may impede mantle downwellings to explain observations of slab stagnation at 700-900 km depth (e.g., Peru slab). An eclogite cycle partially bypassing the asthenosphere, therefore decoupled from MOR magmatism, indeed has important implications for the thermal and chemical fluxes through the mantle, and the survival of ancient mantle reservoirs. JF - American Geophysical Union Fall Meeting AU - Ballmer, M D AU - Schmerr, N C AU - Ritsema, J AU - Motoki, M AU - Ito, G AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract DI14A EP - 05 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680752630?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+stratification+across+the+transition+zone+in+the+presence+of+whole-mantle+convection&rft.au=Ballmer%2C+M+D%3BSchmerr%2C+N+C%3BRitsema%2C+J%3BMotoki%2C+M%3BIto%2C+G%3BAnonymous&rft.aulast=Ballmer&rft.aufirst=M&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2016-10-25 N1 - CODEN - #07548 ER - TY - JOUR T1 - Magnetic remote sensing of ocean flow AN - 1680752557; 2015-040856 AB - It is known that ocean flow generates weak magnetic fields that are detected by land and satellite magnetic observatories, and that there is thereby a potentially important opportunity to develop a new method for the remote sensing of ocean/climate variability. Based on the physical relationship between the magnetic fields and flow sources, it could be argued that in principle this method could become the method of choice for inferring large-scale flow integrals. There are, however, substantial challenges in the practical implementation. We review both the opportunities and challenges in developing this new method of magnetic remote sensing of ocean flow in terrestrial and extra-terrestrial applications. We describe past examples of ocean flow generated magnetic signals associated with swell, ocean tides, tsunamis, and circulation. We discuss the spatio-temporal statistics of ocean flow generated signals and their overlap with other sources in an effort to explain how some oceanic signals are readily identified while others have been illusive. We also present an extraction of tidal magnetic signals using a recent version of the NASA-GSFC/DTU Comprehensive Model of the Earth's magnetic field, and we present an inversion of this signal to produce the global distribution (amplitude and phase) of the Earth's M2 ocean tide. This example of ocean flow (tides, in this case) obtained from magnetic data provides a proof in concept in the terrestrial application which shall be further developed. In extra-terrestrial applications of oceans on icy satellites in the Outer Solar System basic descriptions of the tides are still unavailable and the methods shown may be of more immediate practical application. JF - American Geophysical Union Fall Meeting AU - Tyler, Robert H AU - Sabaka, Terence J AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract GP41D EP - 1164 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680752557?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Magnetic+remote+sensing+of+ocean+flow&rft.au=Tyler%2C+Robert+H%3BSabaka%2C+Terence+J%3BAnonymous&rft.aulast=Tyler&rft.aufirst=Robert&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2016-10-25 N1 - CODEN - #07548 ER - TY - JOUR T1 - Gravity fields of the Moon derived from GRAIL primary and extended mission data AN - 1680752533; 2015-040743 AB - The Gravity Recovery and Interior Laboratory (GRAIL) spacecraft conducted the mapping of the gravity field of the Moon from March 1, 2012 to May 29, 2012, for the primary mission and from August 30, 2012 to December 14, 2012 for the extended mission and endgame. During both mission phases, the twin spacecraft acquired highly precise Ka-band range-rate (KBRR) intersatellite ranging data and Deep Space Network (DSN) data from altitudes of 2.3 to 98.2 km above the lunar surface. We have processed the GRAIL data using the NASA GSFC GEODYN orbit determination and geodetic parameter estimation program and used the supercomputers of the NASA Center for Climate Simulation (NCCS) at NASA GSFC to accumulate the SRIF arrays and derive the geopotential solutions. During the extended mission, the spacecraft orbits were maintained at a mean altitude of approximately 23 km, compared to approximately 50 km during the primary mission. In addition, from December 7 to December 14, 2012, data were acquired from a mean altitude of 11.5 km. With these data, we have derived solutions in spherical harmonics to degree 900. The new gravity solutions show improved correlations with LOLA-derived topography to very high degree and order and resolve many lunar features in the geopotential with a resolution of less than 15 km. We discuss the methods we used for the processing of the GRAIL data, and evaluate these solutions with respect to the derived power spectra, Bouguer anomalies, and fits with independent data (such as from the low-altitude phase of the Lunar Prospector mission). JF - American Geophysical Union Fall Meeting AU - Lemoine, Frank G AU - Goossens, Sander J AU - Sabaka, Terence J AU - Nicholas, Joseph B AU - Mazarico, E AU - Rowlands, David D AU - Loomis, B AU - Chinn, Douglas S AU - Neumann, Gregory A AU - Smith, David E AU - Zuber, M T AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract G31B EP - 01 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680752533?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Gravity+fields+of+the+Moon+derived+from+GRAIL+primary+and+extended+mission+data&rft.au=Lemoine%2C+Frank+G%3BGoossens%2C+Sander+J%3BSabaka%2C+Terence+J%3BNicholas%2C+Joseph+B%3BMazarico%2C+E%3BRowlands%2C+David+D%3BLoomis%2C+B%3BChinn%2C+Douglas+S%3BNeumann%2C+Gregory+A%3BSmith%2C+David+E%3BZuber%2C+M+T%3BAnonymous&rft.aulast=Lemoine&rft.aufirst=Frank&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2016-10-25 N1 - CODEN - #07548 ER - TY - JOUR T1 - Greenland ice sheet mass loss and outlet glacier dynamics from laser altimetry record (1993-2013) AN - 1680752467; 2015-040579 AB - Comprehensive monitoring of the Greenland Ice Sheet (GrIS) by satellite observations has revealed increasing mass loss since the late 1990s. Dynamic processes have been responsible for as much as half of this estimated loss, including ice flow adjustments to past climate variations and contemporary atmospheric and oceanic forcings. Dynamical processes act on different spatial and temporal scales and can cause non-linear changes, even on short, sub-decadal time scales. Quantitative investigation of these processes is imperative for improving ice sheet models and sea-level predictions. Our 1992-2011 altimetry record has shown that dynamic thinning substantially contributes to mass loss. The large spatial and temporal variations of dynamic mass loss and widespread intermittent thinning indicated the complexity of ice sheet response to climate forcing and points to the need of continuing monitoring of the GrIS at high spatial resolution. Airborne Topographic Mapper (ATM) and Laser Vegetation and Ice Sensor (LVIS) airborne laser altimetry measurements, acquired by NASA's IceBridge mission, allowed us to extend the altimetry record to 2013. We generated a record of ice thickness and mass change of the GrIS spanning the period of 1992-2013, reconstructed at several thousand locations using the Surface Elevation Reconstruction and Change detection (SERAC) approach. Elevation changes are corrected for Glacial Isostatic Adjustment and partitioned into climate and ice dynamics induced components. We present the evolution of ice dynamics and climate induced mass loss of the major GrIS drainage basins in 2003-2013 to investigate their contributions to sea-level change. The detailed record of outlet glacier elevation change is consistent with the propagation of dynamic thinning or thickening initiated at lower elevations. We focus our attention to SE and NE Greenland. In SE Greenland we investigate if thinning continued on fast flowing SE Greenland glaciers (e.g., Koge Bugt, A.P. Bernstorff Glacier) after the brief period of thickening observed in 2006-2009. Increasing thinning would imply that earlier decrease in dynamic mass loss represented a short-term trend, rather than a new balance state of the ice sheet. In NE Greenland, continuing thinning at the grounding zones of Ryder, Zachariae and Nioghalvfjerdsfjorden glaciers could lead to retreat, flow acceleration and increasing mass loss as the ice plains buttressing these glaciers will become ungrounded in a region where the bed is under sea level. JF - American Geophysical Union Fall Meeting AU - Csatho, B M AU - Schenk, A F AU - Duncan, K AU - Babonis, G S AU - Sonntag, J G AU - Krabill, W B AU - van den Broeke, M R AU - van Angelen, J AU - Blair, J B AU - Hofton, M A AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract C53D EP - 02 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680752467?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Greenland+ice+sheet+mass+loss+and+outlet+glacier+dynamics+from+laser+altimetry+record+%281993-2013%29&rft.au=Csatho%2C+B+M%3BSchenk%2C+A+F%3BDuncan%2C+K%3BBabonis%2C+G+S%3BSonntag%2C+J+G%3BKrabill%2C+W+B%3Bvan+den+Broeke%2C+M+R%3Bvan+Angelen%2C+J%3BBlair%2C+J+B%3BHofton%2C+M+A%3BAnonymous&rft.aulast=Csatho&rft.aufirst=B&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2016-10-25 N1 - CODEN - #07548 ER - TY - JOUR T1 - Time history of the Martian dynamo from crater magnetic field analysis AN - 1680752441; 2015-040850 AB - Large impacts simultaneously reset both the surface age and the magnetization of the entire depth of crust over areas comparable to the final size of the resulting craters. These properties make large impact craters (>300 km in diameter) ideal 'magnetic markers' for constraining the history of the Martian core dynamo. However the relationship between crustal magnetization and magnetic field measured in orbit is non-unique, making the measured magnetic field signature of an impact crater only a proxy for the magnetization (or lack thereof) below. Using Monte Carlo Fourier domain modeling of subsurface magnetization, we calculate probability distributions of the magnetic field signatures of partially and completely demagnetized craters. We compare these distributions to measured magnetic field signatures of 41 old impact craters on Mars larger than 300 km in diameter and calculate probabilities of their magnetization state. We compare these probabilities to cratering densities and absolute model ages and in this manner arrive at a robust time-history of Martian large crater magnetization and hence of the Martian dynamo. We conclude that the most likely scenario was a Mars dynamo active when the oldest detectable basins formed, ceasing before the Hellas and Utopia impacts, between 4.0 and 4.1 Ga (in model age) and not thereafter restarting. The Mars atmosphere was thereafter exposed directly to erosion by the solar wind, significantly altering the path of climate evolution. Further improvements to the history of the Martian dynamo will require better crater age estimates and lower altitude magnetic field data. JF - American Geophysical Union Fall Meeting AU - Lillis, R J AU - Robbins, Stuart J AU - Manga, M AU - Halekas, J S AU - Frey, Herbert V AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract GP41D EP - 1158 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680752441?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Time+history+of+the+Martian+dynamo+from+crater+magnetic+field+analysis&rft.au=Lillis%2C+R+J%3BRobbins%2C+Stuart+J%3BManga%2C+M%3BHalekas%2C+J+S%3BFrey%2C+Herbert+V%3BAnonymous&rft.aulast=Lillis&rft.aufirst=R&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2016-10-25 N1 - CODEN - #07548 ER - TY - JOUR T1 - Potassium isotopic compositions of NIST potassium standards and (super 40) Ar/ (super 39) Ar mineral standards AN - 1680752394; 2015-040900 AB - Knowledge of the isotopic ratios of standards, spikes, and reference materials is fundamental to the accuracy of many geochronological methods. For example, the (super 238) U/ (super 235) U ratio relevant to U-Pb geochronology was recently re-determined and shown to differ significantly from the previously accepted value employed during age determinations. These underlying values are fundamental to accurate age calculations in many isotopic systems, and uncertainty in these values can represent a significant (and often unrecognized) portion of the uncertainty budget for determined ages. The potassium isotopic composition of mineral standards, or neutron flux monitors, is a critical, but often overlooked component in the calculation of K-Ar and (super 40) Ar/ (super 39) Ar ages. It is currently assumed that all terrestrial materials have abundances indistinguishable from that of NIST SRM 985; this is apparently a reasonable assumption at the 0.25 ppm level (1sigma ). The (super 40) Ar/ (super 39) Ar method further relies on the assumption that standards and samples (including primary and secondary standards) have indistinguishable (super 40) K/ (super 39) K values. We will present data establishing the potassium isotopic compositions of NIST isotopic K SRM 985, elemental K SRM 999b, and (super 40) Ar/ (super 39) Ar biotite mineral standard GA1550 (sample MD-2). Stable isotopic compositions ( (super 41) K/ (super 39) K) were measured by the peak shoulder method with high resolution MC-ICP-MS (Thermo Scientific NEPTUNE Plus), using the accepted value of NIST isotopic SRM 985 for fractionation corrections. (super 40) K abundances were measured by TIMS (Thermo Scientific TRITON), using (super 41) K/ (super 39) K values from ICP-MS measurements (or, for SRM 985, values from) for internal fractionation corrections. Collectively these data represent an important step towards a metrologically traceable calibration of (super 40) K concentrations in primary (super 40) Ar/ (super 39) Ar mineral standards and improve uncertainties by ca. an order of magnitude in the potassium isotopic compositions of standards. JF - American Geophysical Union Fall Meeting AU - Morgan, Leah E AU - Tappa, Michael J AU - Ellam, R M AU - Mark, D F AU - Lloyd, Nicholas S AU - Higgins, J A AU - Simon, J I AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract GP43A EP - 1190 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680752394?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Potassium+isotopic+compositions+of+NIST+potassium+standards+and+%28super+40%29+Ar%2F+%28super+39%29+Ar+mineral+standards&rft.au=Morgan%2C+Leah+E%3BTappa%2C+Michael+J%3BEllam%2C+R+M%3BMark%2C+D+F%3BLloyd%2C+Nicholas+S%3BHiggins%2C+J+A%3BSimon%2C+J+I%3BAnonymous&rft.aulast=Morgan&rft.aufirst=Leah&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2016-10-25 N1 - CODEN - #07548 ER - TY - JOUR T1 - Assimilation of observed SV in geodynamo modeling and the core flow beneath the CMB AN - 1680751364; 2015-041035 AB - Geomagnetic data assimilation is a new research in which surface geomagnetic observations and numerical dynamo models are optimally combined for better understanding the dynamical state in the Earth's outer core, and for improving numerical models. In the past research, only the observed geomagnetic field (the spherical harmonic coefficients of the geomagnetic field models) is assimilated with dynamo solutions. The observed geomagnetic secular variation (SV) is ignored. However, it can provide very valuable information about the core dynamics, as demonstrated by the core flow right beneath the core-mantle boundary (CMB) inverted from the observed SV in the past. Assimilation of this part of information could potentially improve the dynamical responses of the geodynamo, thus the overall performance of the geomagnetic data assimilation. As the first step towards full assimilation of the observed SV, we focus on estimating the core flow changes by minimizing the SV difference between the model forecast and the observations, utilizing the gain matrix and the analysis obtained from assimilation with only the observed field. Then, we shall examine the mathematical foundations for the "expanded" gain matrix that concurrently minimizes the differences between the field forecast and SV forecast. JF - American Geophysical Union Fall Meeting AU - Kuang, Weijia AU - Tangborn, A AU - Jiang, Weiyuan AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract GP53C EP - 1157 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680751364?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Assimilation+of+observed+SV+in+geodynamo+modeling+and+the+core+flow+beneath+the+CMB&rft.au=Kuang%2C+Weijia%3BTangborn%2C+A%3BJiang%2C+Weiyuan%3BAnonymous&rft.aulast=Kuang&rft.aufirst=Weijia&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2016-10-25 N1 - CODEN - #07548 ER - TY - JOUR T1 - Local gravity field determination on the Moon using GRAIL extended mission data AN - 1680750510; 2015-040744 AB - The Gravity Recovery and Interior Laboratory (GRAIL) spacecraft were launched on September 10, 2011, and conducted their primary mapping mission from March 1 until May 29, 2012 at an average altitude of 50 km. GRAIL's extended mission commenced on August 30 and was completed on December 14, 2012. The average altitude during the extended mission was 23 km above lunar surface. Both primary and extended mission data have been processed at NASA/GSFC using the GEODYN software, resulting in high-resolution (degree and order 900 in spherical harmonics) gravity field models of high accuracy. However, especially during low-altitude passes, Ka-band range-rate (KBRR) data residuals are still well above noise level. Here, we focus on methods to determine local gravity adjustments from KBRR data. We represent gravity in the area of interest as gravity anomaly adjustments with respect to the background spherical harmonics model. We use KBRR data only over the area of interest, and we then perform short-arc orbit determination. Our areas of focus are mainly the Mare Orientale area, where GRAIL achieved its lowest altitude above the lunar surface towards the end of the mission, and the south pole area, where naturally there is a confluence of orbit tracks. We investigate different grids and different smoothing constraints used in the estimation of the anomalies, numerical differentiation with respect to time of the KBRR data to localize its sensitivity further, and we evaluate the solutions in terms of Bouguer anomaly signatures, KBRR data fit, and correlations with local topography. JF - American Geophysical Union Fall Meeting AU - Goossens, Sander J AU - Lemoine, Frank G AU - Sabaka, Terence J AU - Nicholas, Joseph B AU - Mazarico, E AU - Rowlands, David D AU - Neumann, Gregory A AU - Smith, David E AU - Zuber, M T AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract G31B EP - 02 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680750510?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Local+gravity+field+determination+on+the+Moon+using+GRAIL+extended+mission+data&rft.au=Goossens%2C+Sander+J%3BLemoine%2C+Frank+G%3BSabaka%2C+Terence+J%3BNicholas%2C+Joseph+B%3BMazarico%2C+E%3BRowlands%2C+David+D%3BNeumann%2C+Gregory+A%3BSmith%2C+David+E%3BZuber%2C+M+T%3BAnonymous&rft.aulast=Goossens&rft.aufirst=Sander&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2016-10-25 N1 - CODEN - #07548 ER - TY - JOUR T1 - What can be learned about the lunar mantle from the Gravity Recovery and Interior Laboratory (GRAIL)? AN - 1680750282; 2015-040748 AB - The Gravity Recovery and Interior Laboratory (GRAIL), a dual-spacecraft, gravity-mapping mission that is a component of NASA's Discovery Program, has successfully concluded its Primary and Extended Missions, and is currently in the science analysis phase. In order to safely navigate the dual spacecraft at an average altitude of 22.5 km above the lunar surface during the Extended Mission phase in the fall of 2012, and to derive the greatest information from the full mission data set, the focus had been on the production of gravitational fields with the highest-possible resolution. Spherical harmonic models of the Moon's gravitational field, produced by separate software systems at the Goddard Space Flight Center and the Jet Propulsion Laboratory, now include observations from both the Primary and Extended Missions. The highest-resolution models to date are to degree and order 900, corresponding to a spatial block size of 6 km, and are ideally suited to study the structure of the Moon's crust in extraordinary detail. GRAIL has achieved all measurement objectives for the Primary Mission, enabling all science investigations to be addressed. One of these investigations is to study the lunar hemispherical asymmetry, i.e., the difference between the nearside and farside. In this study we explore the nearside and farside mantle by isolating the long-wavelength gravity field. We accomplish this objective by removing plausible short-wavelength contributions from the crust that were based on the full resolution of high-degree and -order models, and by considering constraints from crustal compositions and volumes of mare basalt deposits. We localize the power spectral contributions of the nearside and farside to constrain lateral density variations, such as those associated with melting from the source regions of the mare basalts. JF - American Geophysical Union Fall Meeting AU - Zuber, M T AU - Smith, David E AU - Asmar, S W AU - Konopliv, Alex S AU - Lemoine, Frank G AU - Melosh, J AU - Neumann, Gregory A AU - Phillips, Roger J AU - Solomon, S C AU - Watkins, Michael M AU - Wieczorek, M A AU - Williams, James G AU - Andrews-Hanna, J C AU - Garrick-Bethell, I AU - Head, James W AU - Kiefer, W S AU - Matsuyama, I AU - McGovern, P J AU - Nimmo, F AU - Soderblom, J M AU - Taylor, J AU - Weber, Renee C AU - Goossens, Sander J AU - Kruizinga, Gerhard L AU - Mazarico, E AU - Park, Ryan S AU - Yuan, Dahning AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract G31B EP - 06 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680750282?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=What+can+be+learned+about+the+lunar+mantle+from+the+Gravity+Recovery+and+Interior+Laboratory+%28GRAIL%29%3F&rft.au=Zuber%2C+M+T%3BSmith%2C+David+E%3BAsmar%2C+S+W%3BKonopliv%2C+Alex+S%3BLemoine%2C+Frank+G%3BMelosh%2C+J%3BNeumann%2C+Gregory+A%3BPhillips%2C+Roger+J%3BSolomon%2C+S+C%3BWatkins%2C+Michael+M%3BWieczorek%2C+M+A%3BWilliams%2C+James+G%3BAndrews-Hanna%2C+J+C%3BGarrick-Bethell%2C+I%3BHead%2C+James+W%3BKiefer%2C+W+S%3BMatsuyama%2C+I%3BMcGovern%2C+P+J%3BNimmo%2C+F%3BSoderblom%2C+J+M%3BTaylor%2C+J%3BWeber%2C+Renee+C%3BGoossens%2C+Sander+J%3BKruizinga%2C+Gerhard+L%3BMazarico%2C+E%3BPark%2C+Ryan+S%3BYuan%2C+Dahning%3BAnonymous&rft.aulast=Zuber&rft.aufirst=M&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2016-10-25 N1 - CODEN - #07548 ER - TY - JOUR T1 - The status and future prospect for GRACE after the first decade AN - 1680750140; 2015-040759 AB - The twin satellites of the Gravity Recovery and Climate Experiment (GRACE) were launched on March 17, 2002 and have operated continuously for almost 12 years. The mission objectives are to sense the spatial and temporal variations of the Earth's mass distribution through its effects on the gravity field at the GRACE satellite altitude. The primary mission objectives of GRACE are to measure: 1) the Earth's time-averaged gravity field over the mission life and 2) the monthly variations in the mean gravity field at wave lengths between 300 and 4000 km. 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 secular, or long period, mass transport. Measurements of continental aquifer mass change, polar ice mass change and ocean bottom currents are examples of paradigm shifting remote sensing observations enabled by the GRACE satellite measurements. In mid-2013, a complete reanalysis of the mission data, referred to as the RL05 data release, was completed and made available for ongoing science and application studies. This presentation will review some of the reported science improvements from the RL05 data release and the remaining tasks to be conducted to complete the solution, review the results from the 2013 NASA Senior Review and summarize the current mission status and prospects for future operation. JF - American Geophysical Union Fall Meeting AU - Tapley, B D AU - Flechtner, F AU - Bettadpur, Srinivas V AU - Watkins, Michael M AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract G32A EP - 01 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680750140?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+prospect+for+GRACE+after+the+first+decade&rft.au=Tapley%2C+B+D%3BFlechtner%2C+F%3BBettadpur%2C+Srinivas+V%3BWatkins%2C+Michael+M%3BAnonymous&rft.aulast=Tapley&rft.aufirst=B&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2016-10-25 N1 - CODEN - #07548 ER - TY - JOUR T1 - Development of variational data assimilation methods for the MoSST geodynamo code AN - 1680749692; 2015-041059 AB - A range of different approaches to data assimilation for Earth's geodynamo are now being pursued, from sequential schemes based on approximate covariances of various degrees of sophistication, to variational methods for models of varying degrees of physical completeness. While variational methods require development of adjoint (and possible tangent linear) variants on the forward code--a challenging programming task for a fully self-consistent modern dynamo code--this approach may ultimately offer significant advantages. For example, adjoint based variational approaches allow initial, boundary, and forcing terms to be explicitly adjusted to combine data from modern and historical eras into dynamically consistent maps of core state, including flow, buoyancy and magnetic fields. Here we describe development of tangent linear and adjoint codes for the Modular Scalable Self-consistent Three-dimensional (MoSST) geodynamo simulator, and present initial results from simple synthetic data assimilation experiments. Our approach has been to develop the exact linearization and adjoint of the actual discrete functions represented by the computer code. To do this we use a "divide-and-concur" approach: the code is decomposed as the sequential action of a series of linear and non-linear procedures on specified inputs. Non-linear procedures are first linearized about a pre-computed input background state (derived by running the non-linear forward model), and a tangent linear time-step code is developed. For small perturbations of initial state the linearization appears to remain valid for times comparable to the secular variation time-scale. Adjoints for each linear (or linearized) procedure were then developed and tested separately (for symmetry), and then merged into adjoint procedures of increasing complexity. We have completed development of the adjoint for a serial version of the MoSST code, explore time limits of forward operator linearization, and discuss next steps towards use of the code for variational assimilation, and will use this code in some initial data assimilation tests, adjusting initial conditions to match data (spherical harmonic model coefficients) for a later time. JF - American Geophysical Union Fall Meeting AU - Egbert, G D AU - Erofeeva, S AU - Kuang, Weijia AU - Tangborn, A AU - Dimitrova, L L AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract GP54A EP - 08 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680749692?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Development+of+variational+data+assimilation+methods+for+the+MoSST+geodynamo+code&rft.au=Egbert%2C+G+D%3BErofeeva%2C+S%3BKuang%2C+Weijia%3BTangborn%2C+A%3BDimitrova%2C+L+L%3BAnonymous&rft.aulast=Egbert&rft.aufirst=G&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2016-10-25 N1 - CODEN - #07548 ER - TY - JOUR T1 - The CHAOS-4 geomagnetic field model AN - 1680749665; 2015-041032 AB - We present CHAOS-4, a new version in the CHAOS model series, which aims at describing the Earth's magnetic field with high spatial resolution (terms up to spherical degree n=90 for the crustal field, and up to n=16 for the time-varying core field are robustly determined) and high temporal resolution (allowing for investigations of sub-annual core field changes). More than 14 years of data from the satellites Orsted (March 1999 to June 2013), CHAMP (July 2000 to September 2010) and SAC-C (2000 to 2004), augmented with ground observatory revised monthly mean values (1997 to 2013) have been used for this model. Maximum spherical harmonic degree of the static (crustal) field is n=100. The core field time changes are expressed by spherical harmonic expansion coefficients up to n=20, described by order 6 splines (with 6-month knot spacing) spanning the time interval 1997.0 to 2013.5. The third time derivative of the squared magnetic field intensity is regularized at the core-mantle boundary. No spatial regularization is applied for the core field, but the high-degree crustal field is regularized for n>85. As part of the modeling effort we co-estimate a model of the large-scale magnetospheric field (with expansions in the GSM and SM coordinate system up to degree n=2 and parameterization of the time dependence using the decomposition of Dst into external (Est) and induced (Ist) parts) and perform an in-flight alignment of the vector data (co-estimation of the Euler describing the rotation between the coordinate systems of the vector magnetometer and of the star sensor providing attitude information). The final CHAOS-4 model is derived by merging two sub-models: its low-degree part has been obtained using similar model parameterization and data sets as used for previous CHAOS models (but of course including newer satellite observations), while its high-degree crustal field part is solely determined from low-altitude CHAMP satellite observations between January 2009 and September 2010. JF - American Geophysical Union Fall Meeting AU - Olsen, N AU - Finlay, C C AU - Luhr, H AU - Sabaka, Terence J AU - Michaelis, I AU - Rauberg, J AU - Toffner-Clausen, L AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract GP53C EP - 1154 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680749665?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+CHAOS-4+geomagnetic+field+model&rft.au=Olsen%2C+N%3BFinlay%2C+C+C%3BLuhr%2C+H%3BSabaka%2C+Terence+J%3BMichaelis%2C+I%3BRauberg%2C+J%3BToffner-Clausen%2C+L%3BAnonymous&rft.aulast=Olsen&rft.aufirst=N&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2016-10-25 N1 - CODEN - #07548 ER - TY - JOUR T1 - Investigating the origin of the Gutenberg discontinuity with anisotropic seismic tomography AN - 1673368694; 2015-033055 AB - We present a new tomographic model of seismic anisotropy and velocity beneath the Pacific basin, which reveals changes in seismic anisotropy that coincide with SS precursor detections of the Gutenberg seismic discontinuity (G). We inverted a global dataset composed of anisotropic Love and Rayleigh wave phase velocity maps for fundamental and higher modes (Visser et al., 2008) to obtain a 3-D model of shear-wave velocity, radial anisotropy, and vertically polarized shear wave (SV) azimuthal anisotropy. The higher modes provide greater sensitivity to upper mantle structure than previous models, many of which are based on fundamental modes only. Our model displays multiple layers. The top layer is described by high S-wave velocities, radial anisotropy with VSV>VSH, and azimuthal anisotropy with fast axes that are subparallel to the paleospreading directions. Below, we find a low velocity zone (LVZ) characterized by stronger radial anisotropy (4-5%) and VSH>VSV that extends down to 150-200km. This LVZ is also associated with anomalously strong azimuthal anisotropy of approximately 5% and fast axes that align with the present-day absolute plate motion (APM). The thickness of the top layer increases with overlying crustal age, following the prediction of a simple half-space cooling model for oceanic lithosphere. We thus assign the interface to the lithosphere-asthenosphere boundary (LAB). The anisotropy within the lithosphere is consistent with olivine lattice preferred orientation (LPO) due to past deformation episodes. The anisotropy in the LVZ/asthenosphere is in agreement with LPO generated by mantle flow-induced shear strain in a channel of lowered viscosity. In many locations, a strong change in anisotropy coincides with where the G has been detected by SS precursors, especially for ages between 30 Ma and 100 Ma. For younger ages (< 30 Ma), the G is at approximately 50 km depth, mirroring a weak change in azimuthal anisotropy, but deviates from the HSC model and isotropic shear velocity structure. Beneath 100-130 Ma crust, the G is near 75 km depth, shallower than predicted by the HSC models, however, this region is likely perturbed by upwelling beneath Hawaii. The G is not resolved by the SS precursors beneath regions of crust older than approximately 130Ma, and only sporadic detections of reflectors exist beneath old oceanic plate near the expected depth of the LAB ( approximately 150 km). These results suggest that G reflector is tied to vertical changes in mantle azimuthal anisotropy rather than isotropic shear velocity reduction across the LAB. This may indicate a compositional component to the origin of G over purely thermal mechanisms. Previously proposed hypotheses supporting compositional effects at the G include partial melt lenses in the asthenosphere and hydrogen depletion of olivine from decompression melting beneath mid-oceanic ridges. Partial melt introduces azimuthal anisotropy when the melt is entrained by mantle flow into en echelon tilted layers. In this scenario, melt must be long-lived or renewed continuously to maintain such structures. The presence of variable hydration with depth offers an alternative subsolidus explanation for our observations. Water can modify the anisotropic properties of upper mantle olivine, a transition from dry to wet olivine could indeed yield different fabric and explain the observed change in fast axes direction. JF - American Geophysical Union Fall Meeting AU - Beghein, C AU - Yuan, K AU - Xing, Z AU - Schmerr, N C AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract DI31B EP - 08 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1673368694?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+origin+of+the+Gutenberg+discontinuity+with+anisotropic+seismic+tomography&rft.au=Beghein%2C+C%3BYuan%2C+K%3BXing%2C+Z%3BSchmerr%2C+N+C%3BAnonymous&rft.aulast=Beghein&rft.aufirst=C&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-04-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - SS precursor detections of the X and Lehmann discontinuities beneath the Pacific AN - 1673368648; 2015-033060 AB - Here we present new observations of a seismic discontinuity near 265-335 km depth that occurs as a laterally coherent interface beneath the Pacific basin, as well as evidence for a more sporadic discontinuity near 220 km depth occurring beneath the mid-ocean ridges. The deeper boundary (310+ or -44 km) is associated with past detections of the so-called "X" discontinuity (X), and has a precursory amplitude ratio of 0.0255+ or -0.0090 suggesting an impedance contrast of 3.4-8.8%. The shallower boundary (217+ or -18 km) is near the proposed depth of the Lehmann discontinuity (L) and has a precursory amplitude ratio of 0.0264+ or -0.0102, slightly higher than that of the X. Both interfaces exhibit positive velocity increases with depth, and detection locales are consistent with a variety of past investigations. These detections were made using a large regional dataset of broadband seismograms containing underside reflected transversely polarized SS precursors. The data are aligned and stacked to bring the precursors out of the background noise levels. We examine stacks for coherent precursor energy arriving at 80-130 seconds before the parent SS wave, robust arrivals are selected using the 95% confidence bounds obtained from a bootstrap resample of the stacked seismograms. Arrivals are corrected for lateral variations in crustal structure and mantle shear wave heterogeneity. The depth of the L falls near the base of the oceanic low-velocity-zone constrained by higher mode surface wave phase velocity maps, and primarily appears beneath the East Pacific Rise; this is coincident with the proposed onset depth of carbonate and silicate melting in the mantle. The X-discontinuity is more laterally coherent beneath the Pacific, and may be indicative of the coesite to stishovite phases transition in eclogitic materials, the formation of hydrous Phase A in subduction zones, the orthorhombic to monoclinic transition in pyroxenes, or variable hydration affecting the low-pressure to high-pressure clinoenstatite transition. The depth variability of the X has been previously interpreted as evidence for hydrated harzburgitic and basalt enriched materials in the upper mantle. Here we find the depth of the X is coincident with a large change in azimuthal anisotropy. Inversion of higher mode Rayleigh wave phase velocity maps enabled us to map 3-D azimuthal anisotropy for vertically polarized shear-waves (SV) in the deep upper mantle with greater depth resolution than previous studies. Calculations of the vertical gradient of the fast axes revealed a striking correlation between changes in the fast seismic direction for SV waves and the detection of the X. This predicts that any probable mineral physical mechanism for the X must be associated with a change in mantle anisotropy. In addition, the X has locally enhanced reflectivity in the vicinity of strong mantle upwellings such as Hawaii and the South Pacific. As geochemical constraints indicate that these upwellings carry heterogeneity, we favor an interpretation in which lateral changes in mantle composition (both in basalt enrichment and hydrous content) are responsible for the observed seismic structures in these regions. Altogether, there appears to be significant lateral heterogeneity on the X, suggesting multiple mechanisms may play a role in its seismic character. JF - American Geophysical Union Fall Meeting AU - Schmerr, N C AU - Beghein, C AU - Ballmer, M D AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract DI32A EP - 05 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1673368648?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=SS+precursor+detections+of+the+X+and+Lehmann+discontinuities+beneath+the+Pacific&rft.au=Schmerr%2C+N+C%3BBeghein%2C+C%3BBallmer%2C+M+D%3BAnonymous&rft.aulast=Schmerr&rft.aufirst=N&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-04-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - Broadband array observations of the D" discontinuity AN - 1673367002; 2015-035170 AB - The D" discontinuity is characterized by an increase in P- and S-wave velocity of about 1-3% at depths of 150 to 300 km above the core-mantle boundary (CMB). The presence of the discontinuity has primarily been inferred through observations of triplicated S-waves bottoming in the lowermost mantle; however some seismic array studies have detected the discontinuity using vertical component P-wave data. An enormous amount of new three-component broadband data has been made available through EarthScope facilities such as the Transportable Array (TA) and Flexible Array (FA), allowing for the evaluation of D" discontinuity structure with array processing techniques. We examine the lower mantle beneath Central America using 54 South American events and one Caribbean event recorded on broadband stations deployed in North America between May 2005 and May 2012. The events range in moment magnitude from 5.7 to 7.8 and in depth from 80 to 645 km. Data collected for TA and FA stations, and permanent seismic networks across the United States (e.g., ANSS backbone), were rotated to radial and transverse components and bandpass filtered from 1 to 20 seconds. Each seismic trace was visually inspected and those traces that did not display clear S and ScS pulses were discarded. We retained a total of 19,348 transverse component seismic traces. Here we present observations of the D" discontinuity using the velocity seismogram (vespagram) approach. Data are aligned and normalized to unity on the direct S-wave arrival. Vespagrams are calculated for the entire data set collected into small geographic bins (e.g., 2 degrees geographic bin radius). Differential travel times, slownesses, and amplitudes of later arriving phases are measured relative to the primary S-wave arrival. We compare these measurements to vespagram measurements generated by processing synthetic seismograms calculated using the axi-symmetric finite-difference method SHaxi. The differential measurements provide constraints on D" thickness and the velocity jump across the discontinuity. We present a new map of D" discontinuity presence (or absence), thickness, and amplitude of the D" S-wave velocity contrast for the region beneath Central America. In addition, we analyze vespagrams generated for radial component seismograms in order to assess inferred D" anisotropy. JF - American Geophysical Union Fall Meeting AU - Whittaker, S AU - Thorne, M S AU - Koper, K D AU - Schmerr, N C AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract DI51A EP - 2270 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1673367002?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Broadband+array+observations+of+the+D%22+discontinuity&rft.au=Whittaker%2C+S%3BThorne%2C+M+S%3BKoper%2C+K+D%3BSchmerr%2C+N+C%3BAnonymous&rft.aulast=Whittaker&rft.aufirst=S&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-04-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - NASA's immersive Earth; Earth science stories for planetariums AN - 1673366076; 2015-035182 AB - NASA's Immersive Earth Program tells Earth Science stories in a classroom and planetarium. Immersive Earth is a gateway for students to access visual representations of changes to Earth, using data to draw conclusions about factors that influence a changing world. The program was developed by middle school teachers and planetariums, using NASA's Earth Observations (NEO) data and other NASA satellite data to tell Earth Science Stories, including the story of the Earth's energy budget, of chemical weather, of the water cycle, of climate change, and of the carbon cycle. Students are encouraged to draw conclusions from the provided data about their changing world, applying it to information collected in their own backyard. Viewing the data in an interactive planetarium setting allows them to be immersed in Earth science, in a setting typically associated with space. The planetarium story kit allows them to understand how changes they can observe on their own, can be observed at different scales using satellite data which then allows them to see how this information relates to a larger system. JF - American Geophysical Union Fall Meeting AU - Owen, T AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract ED11A EP - 0703 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 15:Miscellaneous UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1673366076?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=NASA%27s+immersive+Earth%3B+Earth+science+stories+for+planetariums&rft.au=Owen%2C+T%3BAnonymous&rft.aulast=Owen&rft.aufirst=T&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-04-16 N1 - CODEN - #07548 ER - TY - JOUR T1 - North American megadroughts in PMIP3 last-millennium model simulations AN - 1668232421; 2015-031002 AB - Some of the starkest features of proxy-estimated hydroclimate variability in the North American Southwest (NASW; 125 degrees W-105 degrees W, 25 degrees N-42.5 degrees N) are the severe and multidecadal drought periods that have existed in the region. These so called megadroughts are a prominent and well-established feature of the NASW's hydroclimate history. Given the prominence of these features in our recent past, it is imperative to consider whether Atmosphere-Ocean General Circulation Models (AOGCMs) are capable of simulating these events and if such features of past hydroclimate change are forced or the product of internal variability. Toward such ends, low-frequency hydroclimatic variability is investigated in six last-millennium (LM) simulations derived from AOGCMs as organized through the Paleoclimate Model Intercomparison Project Phase 3 (PMIP3) archive. These simulations are analyzed and compared to the North American Drought Atlas (NADA), a gridded tree-ring derived estimate of hydroclimate variability in North America that spans the last one to two millennia. Megadroughts that are similar in duration and magnitude to NADA-estimated droughts are found to be a robust feature of the LM AOGCM simulations. These droughts, nevertheless, are not the result of changes in exogenous forcing conditions. Moreover, characteristically similar droughts occur in control simulations from the same AOGCMs. Previous work with a single AOGCM showed megadroughts in the NASW to be the result of stochastic-atmospheric variability, but the larger ensemble of LM simulations analyzed in the current study indicates that simulated multidecadal droughts occur for a variety of dynamic reasons. In particular, models that simulate realistic teleconnections between the tropical Pacific Ocean and North American hydroclimate, as measured against observational data, are observed to simulate persistent droughts as a consequence of changes in tropical Pacific sea surface temperature (SST) gradients. Despite this connection, however, changes in SST gradients are shown to occur independent of radiative forcing conditions. JF - American Geophysical Union Fall Meeting AU - Coats, S AU - Smerdon, J E AU - Seager, R AU - Cook, B AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract GC11A EP - 0972 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668232421?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=North+American+megadroughts+in+PMIP3+last-millennium+model+simulations&rft.au=Coats%2C+S%3BSmerdon%2C+J+E%3BSeager%2C+R%3BCook%2C+B%3BAnonymous&rft.aulast=Coats&rft.aufirst=S&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-04-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - NASA's Space Geodesy Project AN - 1668232245; 2015-030987 AB - NASA's Space Geodesy Project (SGP) recently completed a prototype core site as the basis for a next generation Space Geodetic Network that is part of NASA's contribution to the Global Geodetic Observing System (GGOS). This system is designed to produce the higher quality data required to establish and maintain the Terrestrial Reference Frame and provide information essential for fully realizing the measurement potential of the current and future generation of Earth Observing spacecraft. The prototype core site is at NASA's Geophysical and Astronomical Observatory at Goddard Space Flight Center and includes co-located, state of-the-art, systems from all four space geodetic observing techniques: Very Long Baseline Interferometry (VLBI), Satellite Laser Ranging (SLR), Global Navigation Satellite Systems (GNSS), and Doppler Orbitography and Radiopositioning Integrated by Satellite (DORIS). A system for monitoring of the "ties" between these four systems is an integral part of the core site development concept and this specific prototype. When fully implemented, this upgraded global network will benefit in addition to the ITRF, all other network products (e.g. Precision Orbit Determination, local & regional deformation, astrometry, etc.), which will also be improved by at least an order of magnitude, with concomitant benefits to the supported and tracked missions, science projects, and engineering applications. We present the results of the prototype site demonstration and describe the NASA plans for implementing its next generation network. JF - American Geophysical Union Fall Meeting AU - Merkowitz, Stephen M AU - Desai, Shailen D AU - Gross, Richard S AU - Hilliard, Lawrence M AU - Lemoine, Frank G AU - Long, James L AU - Ma, Chopo AU - McGarry, Jan AU - Murphy, D AU - Noll, Carey E AU - Pavlis, E C AU - Pearlman, M R AU - Stowers, D A AU - Webb, Frank AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract G53C EP - 02 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668232245?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=NASA%27s+Space+Geodesy+Project&rft.au=Merkowitz%2C+Stephen+M%3BDesai%2C+Shailen+D%3BGross%2C+Richard+S%3BHilliard%2C+Lawrence+M%3BLemoine%2C+Frank+G%3BLong%2C+James+L%3BMa%2C+Chopo%3BMcGarry%2C+Jan%3BMurphy%2C+D%3BNoll%2C+Carey+E%3BPavlis%2C+E+C%3BPearlman%2C+M+R%3BStowers%2C+D+A%3BWebb%2C+Frank%3BAnonymous&rft.aulast=Merkowitz&rft.aufirst=Stephen&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-04-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - Pan-continental droughts in North America over the last millennium AN - 1668231942; 2015-030999 AB - Regional droughts are common in North America, but pan-continental droughts extending across multiple regions, including 2012, are rare relative to single region events. We use the tree-ring derived North American Drought Atlas to investigate drought variability in four regions over the last millennium, focusing on pan-continental droughts. During the Medieval Climate Anomaly (MCA), the Central Plains (CP), Southwest (SW), and Southeast (SE) experienced drier conditions and increased occurrence of droughts and the Northwest (NW) witnessed several extended pluvials. Enhanced MCA aridity in the SW and CP manifested as multi-decadal megadroughts. Notably, megadroughts in these regions differed in their timing and persistence, suggesting that they represent regional events influenced by local dynamics, rather than a unified, continental-scale phenomenon. There is no trend in pan-continental drought occurrence, defined as temporally synchronous droughts in three or more regions. SW+CP+SE droughts are the most common, occurring in 12% of all years and peaking in prevalence during the 12th and 13th centuries; patterns involving three other regions occur in about 8% of years. Positive values of the Southern Oscillation Index (La Nina conditions) are linked to SW+CP+SE and SW+CP+NW droughts, while CP+NW+SE droughts are associated with positive values of the Pacific Decadal Oscillation and Atlantic Multidecadal Oscillation. While relatively rare, pan-continental droughts are present in the paleo-record and are linked to defined modes of climate variability, implying the potential for seasonal predictability. Assuming stable drought teleconnections, these events will remain an important feature of future North American hydroclimate, possibly increasing in their severity in step with other expected hydroclimate responses to increased greenhouse gas forcing. JF - American Geophysical Union Fall Meeting AU - Cook, B AU - Smerdon, J E AU - Seager, R AU - Cook, E R AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract GC11A EP - 0956 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668231942?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Pan-continental+droughts+in+North+America+over+the+last+millennium&rft.au=Cook%2C+B%3BSmerdon%2C+J+E%3BSeager%2C+R%3BCook%2C+E+R%3BAnonymous&rft.aulast=Cook&rft.aufirst=B&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-04-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - Pronounced warming of the Greenland ice sheet AN - 1668228805; 2015-027533 AB - In the late spring and early summer of 2013, researchers on the SAGE (Sunlight Absorption on the Greenland ice sheet Experiment) Traverse, conducted a 4000 km snowmobile traverse across northwest Greenland. One aspect of this study collected field measurements of borehole temperatures across the northern Greenland ice sheet. Sites first measured by Benson in 1953-1955 are re-visited, showing long term trends in ice sheet temperature. Results indicate a pattern of dramatic warming (up to +5-6 C) at mid-level elevations (1400-2500 m) and little temperature change or perhaps slight cooling at high elevations (>2500 m). Compared to coastal West Greenland stations and Arctic-wide temperature reconstructions, which indicate warming trends of 1-1.5 C over the intervening 58-60 years, both results are surprising. Several mechanisms are explored which may account for the rapid warming of mid-altitude ice sheet, including albedo changes and elevated heat transport into the ice due to percolation. The observed ice warming, increasing ice temperature faster than air temperature changes, has serious implications, potentially driving melt facies up the ice sheet faster than would otherwise be expected and priming the ice sheet for greater runoff production. JF - American Geophysical Union Fall Meeting AU - Polashenski, C AU - Courville, Z AU - Benson, C S AU - Wong, G J AU - Hawley, R L AU - Hall, D K AU - Chen, J AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract C13B EP - 0674 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668228805?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Pronounced+warming+of+the+Greenland+ice+sheet&rft.au=Polashenski%2C+C%3BCourville%2C+Z%3BBenson%2C+C+S%3BWong%2C+G+J%3BHawley%2C+R+L%3BHall%2C+D+K%3BChen%2C+J%3BAnonymous&rft.aulast=Polashenski&rft.aufirst=C&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-04-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - Evaluation of heterotrophy in in serpentinite-associated waters from the Coast Range Ophiolite, Northern California, USA and the Zambales Ophiolite, Philippines AN - 1664435509; 2015-025267 AB - The deep biosphere in cold, dark sub-seafloor ultramafic rocks (i.e., those rocks rich in Fe and Mg) is stressed by exceedingly high pH, transient, if any, inorganic carbon availability, and little known organic carbon inventories. As a test of heterotrophic carbon use, serpentinite-associated waters (from groundwater sampling wells and associated surface seepages in tectonically uplifted mantle units in ophiolites) were tested for differences with respect to aqueous geochemistry and performance in EcoPlates (super TM) - Biolog Inc. .. This work focuses on two field locations for water sampling: the Coast Range Ophiolite, CA, USA, and the Zambales Ophiolite, Philippines. Characteristics of each sampling site are presented (pH, mineral substrate, Ca (super 2+) /Mg (super 2+) ratio, aqueous metal loads, etc.). Complementary EcoPlate (super TM) results [prefabricated 96-well plates, seeded with triplicate experiments for determining microbiological community response to difference organic carbon sources; a triplicate control experiment with just water is built in to the plate also] are also presented. We found that waters from selected California [groundwater wells (7 discrete wells) and related surface seeps (5 hydrologically connected sites)] and Philippines [4 Zambales Ophiolite springs/seepages] sourced in serpentinites were analyzed. EcoPlate (super TM) average well-color development (AWCD), which demonstrates microbial activities averaged per plate (as in Garland and Mills, 1991), differs across sites. Correlations of AWCD with environmental data (such as pH, oxidation-reduction potential or ORP, Ca (super 2+) /Mg (super 2+) ratio, and Fe contents) are evaluated. Clarifying the geochemical-biological relationships that bear out in these analyses informs discourse on the energetic limits of life in serpentinizing systems, with relevance to ultramafic-hosted life on continents and in the seabed. JF - American Geophysical Union Fall Meeting AU - Scott, T J AU - Arcilla, C A AU - Cardace, D AU - Hoehler, T M AU - McCollom, T M AU - Meyer-Dombard, D R AU - Schrenk, M O AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract B13C EP - 0487 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1664435509?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Evaluation+of+heterotrophy+in+in+serpentinite-associated+waters+from+the+Coast+Range+Ophiolite%2C+Northern+California%2C+USA+and+the+Zambales+Ophiolite%2C+Philippines&rft.au=Scott%2C+T+J%3BArcilla%2C+C+A%3BCardace%2C+D%3BHoehler%2C+T+M%3BMcCollom%2C+T+M%3BMeyer-Dombard%2C+D+R%3BSchrenk%2C+M+O%3BAnonymous&rft.aulast=Scott&rft.aufirst=T&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-03-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - Synthesis of nitrous oxide by lightning in the early anoxic Earth's atmosphere AN - 1664435467; 2015-025225 AB - Carbon dioxide (CO (sub 2) ) was the main atmospheric component of the early Earth's atmosphere and exerted a key role in climate by maintaining a hydrosphere during a primitive faint Sun [1]; however, CO (sub 2) was eventually removed from the atmosphere by rock weathering and sequestered in the Earth's crust and mantle [1]. Nitric oxide (NO) was fixed by lightning discharges at a rate of 1X10 (super 16) molecules J (super -1) in CO (sub 2) (50-80%) rich atmospheres [2]. As the levels of atmospheric CO (sub 2) dropped to 20%, the production rate of NO by lightning rapidly decreased to 2X10 (super 14) molecules J (super -1) and then slowly diminished to 1X10 (super 14) molecules J (super -1) at CO (sub 2) levels of about 2.5% [2]. In order to maintain the existence of liquid water in the early Earth, it is required to warm up the planet with other greenhouse gases such as methane (CH (sub 4) ) [3]. Here we report an experimental study of the effects of lightning discharges on the nitrogen fixation rate during the evolution of the Earth's early atmosphere from 10 to 0.8 percent of carbon dioxide with methane concentrations from 0 to 1,000 ppm in molecular nitrogen. Lightning was simulated in the laboratory by a plasma generated with a pulsed Nd-YAG laser [2]. Our results show that the production of NO by lightning is independent of the presence of methane but drops from 3X10 (super 14) molecules J (super -1) in 10% CO (sub 2) to 5X10 (super 13) molecules J (super -1) in 1% CO (sub 2) . Surprisingly, nitrous oxide (N (sub 2) O) is also produced at a rate of 4X10 (super 13) molecules J (super -1) independent of the levels of CH (sub 4) and CO (sub 2) . N (sub 2) O is produced by lightning in the contemporaneous oxygenated Earth's atmosphere at a comparable rate of (0.4-1.5)X10 (super 13) molecules J (super -1) [4, 5], but was not detected in nitrogen-carbon dioxide mixtures in the absence of oxygen [6]. The only previously reported abiotic synthesis of N (sub 2) O was by corona discharges in rich CO (sub 2) atmospheres (20-80%) with a production rate of 8X10 (super 12) molecules J (super -1) [6]; however at lower CO (sub 2) (<20%) levels, N (sub 2) O is no longer produced. Therefore, lightning in the early Earth's atmosphere was the main source of N (sub 2) O in nitrogen dominated atmospheres. N (sub 2) O is not known to have played a role in abiotic synthesis. It is not incorporated by microorganisms, and hence may not have had a role in the supply of reactive nitrogen to the biosphere. However, it is a powerful greenhouse gas and may have had a role in warming up the early Earth's atmosphere [7]. Lightning activity is enhanced in a warmer climate [8] and so the production of N (sub 2) O by lightning may have had a positive feedback in increasing lightning activity resulting in more N (sub 2) O production. N (sub 2) O is also produced by microbial activity and has been suggested as a potential biosignature in the atmospheres of extrasolar planets [9]. Here we show that lightning can interfere with the remote detection of life using N (sub 2) O as a biosignature. [1] Kasting, J.F.: 1993, Science 259, 920; [2] Navarro-Gonzalez, R., et al.: 2001, Nature 412, 61; [3] Tian, F., et al.: 2011, Earth Planet. Sci. Lett. 308, 417; [4] Levine, J.S. et al.: 1979, Geophys. Res. Lett. 6, 557; [5] [5] Hill, R.D. et al.: 1984, J. Geophys. Res. 89, 1411; [6] Nna Mvondo, D. et al.,: 2005, Origins Life Evol. Biosph. 35, 401; [7] Roberson, A.L. et al., Geobiology 9, 313; [8] Williams, E.R.: 2004, Atmos. Res. 76, 272; and [9] Rauer, H.S. et al., Astron. Astrophys. 529, A8. JF - American Geophysical Union Fall Meeting AU - Navarro, Karis F AU - Navarro-Gonzalez, R AU - McKay, Christopher P AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract AE33B EP - 0348 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1664435467?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Synthesis+of+nitrous+oxide+by+lightning+in+the+early+anoxic+Earth%27s+atmosphere&rft.au=Navarro%2C+Karis+F%3BNavarro-Gonzalez%2C+R%3BMcKay%2C+Christopher+P%3BAnonymous&rft.aulast=Navarro&rft.aufirst=Karis&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-03-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - Microbiology of ultrabasic groundwaters of the Coast Range Ophiolite, California AN - 1664435315; 2015-025284 AB - Upon exposure to water, ultramafic rocks characteristic of the Earth's mantle undergo a process known as serpentinization. These water-rock reactions lead to highly reducing conditions and some of the highest pH values reported in nature. In contrast to alkaline soda lakes, actively serpentinizing environments exposed on land are commonly associated with low salinity freshwaters, imparting unique challenges upon their resident microbial communities. These environments are especially prevalent along continental margins, and cover extensive portions of the west coast of North America. Most studies of serpentinizing environments have focused upon springs that emanate from fractures in the subsurface. Here, we present microbiological data from a series of groundwater wells associated with active serpentinization in the California Coast Range, an ophiolite complex near Lower Lake, California. Waters from ultrabasic wells had lower microbial cell concentrations and diversity than were found in moderate pH wells in the same area. Bacteria consistently made up a higher proportion of the microbial communities compared to Archaea as determined by qPCR. High pH wells were dominated by taxa within the Betaproteobacteria and Clostridia, whereas moderate pH wells predominantly contained common soil taxa related to Gammaproteobacteria and Bacilli. Multivariate statistical analyses incorporating key environmental parameters supported these observations and also highlighted correlations between the high-pH taxa and the abundance of hydrogen and methane gas. Similarly, colony forming units of alkaliphilic microorganisms were consistently 1-2 orders of magnitude higher in the ultrabasic wells and were taxonomically distinct from the moderate pH groundwaters. Together, these results show that distinct populations inhabit subsurface environments associated with active serpentinization, consistent with previous observations, and suggest that Betaproteobacteria and Clostridia probably play significant roles in the microbiology of these ecosystems. The low diversity microbial communities of serpentinizing subsurface habitats are likely sustained by the high hydrogen and methane fluxes that emanate from such systems and further investigations will directly test their roles in mediating biogeochemical cycles in these environments. JF - American Geophysical Union Fall Meeting AU - Schrenk, M O AU - Brazelton, W J AU - Twing, K I AU - Kubo, Michael AU - Cardace, D AU - Hoehler, T M AU - McCollom, T M AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract B13C EP - 0508 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1664435315?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Microbiology+of+ultrabasic+groundwaters+of+the+Coast+Range+Ophiolite%2C+California&rft.au=Schrenk%2C+M+O%3BBrazelton%2C+W+J%3BTwing%2C+K+I%3BKubo%2C+Michael%3BCardace%2C+D%3BHoehler%2C+T+M%3BMcCollom%2C+T+M%3BAnonymous&rft.aulast=Schrenk&rft.aufirst=M&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-03-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - Microbial metabolic landscapes derived from complementary mineralogical, aqueous geochemical, and gas data associated with high pH, actively serpentinizing springs in the Coast Range Ophiolite (CA,USA) and zambales and Palawan ophiolites (Philippines) AN - 1664435107; 2015-025280 AB - We applied x-ray diffraction and thin section petrography to profile the mineralogy of serpentinites and relict peridotites pertinent to the Coast Range Ophiolite Microbiological Observatory (CROMO, an array of 8 water monitoring wells installed in serpentinizing ultramafic rocks, sited at the UC-Davis McLaughlin Natural Reserve, Lower Lake, CA) and Zambales and Palawan ophiolites in the Philippines. In general, serpentinization in near surface samples was extensive, obscuring many protolith characteristics, but relict olivine grains are apparent. Upwelling serpentinizing formation fluids react to varying degrees with shallow hydrological regimes impacted by meteoric inputs. In the vicinity of CROMO, modest pH (7 to 8.5) waters form spring deposits. In the Philippines ophiolites, high pH (10.8 to 11. 3) waters form extensive travertines near Manleluag Springs and newly faulted sections of the Poon Bato River. Travertine fabric and chemistry indicate episodic spring flow and suggest that ambient water chemistry shifts over time. A multiprobe meter simultaneously measured pH, temperature, conductivity, oxidation-reduction potential, and dissolved oxygen at selected springs. Filtered water samples from monitoring wells and springs were analyzed for major elements and some ions. Dissolved gases and gas bubbles were captured and transported for analysis of H (sub 2) , CO, and CH (sub 4) . Aqueous and gas geochemistry data were transformed into activity data using EQ3: A Computer Program for Geochemical Aqueous Speciation-Solubility Calculations (Wolery, 1992) and the Gibbs Energy values for selected metabolic reactions, given the environmental conditions, were calculated. Metabolisms considered were: methanogenesis, methane oxidation, ferric iron reduction, ferrous iron oxidation, oxidation of S in pyrite, nitrification, denitrification, and N-fixation. At all sites tapping waters sourced in actively serpentinizing systems, regardless of geography, ferrous iron oxidation was the most strongly favored of the modeled reactions, while methanogenesis and nitrification reactions were not thermodynamically feasible, under the modeled conditions. Indeed, the lack of favorable biological methanogenesis is consistent with microbiological studies at CROMO. Also, concentrations of aqueous ferrous iron may be extremely low at high pH, however, causing the amount of energy to be gained from the reaction to be very small. Taken together, data from CROMO formation fluids and deeply sourced springs at the Philippines Ophiolite sites describe a similar landscape of favorable microbial metabolisms that could be extended to other serpentinizing ecosystems. The recurrent problem of a disrupted nitrogen cycle in these ultramafic-hosted springs is discussed. JF - American Geophysical Union Fall Meeting AU - Cardace, D AU - Meyer-Dombard, D R AU - Arcilla, C A AU - Hoehler, T M AU - McCollom, T M AU - Schrenk, M O AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract B13C EP - 0503 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1664435107?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Microbial+metabolic+landscapes+derived+from+complementary+mineralogical%2C+aqueous+geochemical%2C+and+gas+data+associated+with+high+pH%2C+actively+serpentinizing+springs+in+the+Coast+Range+Ophiolite+%28CA%2CUSA%29+and+zambales+and+Palawan+ophiolites+%28Philippines%29&rft.au=Cardace%2C+D%3BMeyer-Dombard%2C+D+R%3BArcilla%2C+C+A%3BHoehler%2C+T+M%3BMcCollom%2C+T+M%3BSchrenk%2C+M+O%3BAnonymous&rft.aulast=Cardace&rft.aufirst=D&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-03-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - Ensemble mean climatology of snow darkening effect due to deposition of dust, black carbon, and organic carbon as simulated with the NASA GEOS-5 Earth System Model AN - 1664434702; 2015-023097 AB - The importance of the snow darkening effect (SDE) caused by solar absorbing aerosols such as dust and black carbon (BC) on climate has been discussed in previous studies. We have developed a snow darkening package for the catchment land surface model coupled to the NASA Goddard Earth Observing System, version 5 (GEOS-5), Earth System Model. Our snow darkening package includes the schemes for snow albedo and mass concentration calculations in polluted snow by dust, BC, and organic carbon (OC) depositions. The snow darkening package is currently available for seasonal snowpack over the model-defined land areas, excluding sea ice and inland of the ice sheets. The depositions of the solar absorbing aerosols are obtained from the GOCART aerosol module in the GEOS-5. Here we show the preliminary results of ensemble mean climatology (EMC) of the full SDE (i.e., dust+BC+OC). Ensemble simulations covering 10-year of 2002-2011 were carried out with the GEOS-5 including and excluding the full SDE for which each has 10 ensemble members. Shortwave radiative forcing (RF) at the top of atmosphere under all-sky condition for the 10-member EMC of the full SDE was relatively larger over Europe, Central Asia (CA), the Himalayas, the Tibetan Plateau (TP), East Asia (EA), eastern Siberia (ES), the US, and Canadian Arctic. The RF was the strongest over the Himalayas and the TP in the Northern Hemisphere. The increases of surface air temperature also well correspond to the RF pattern. Larger reductions of snow water equivalent in seasonal snowpack were seen over the Himalayas, the TP, Alaska, Western Canada, and Arctic regions. We will discuss more on the day of the presentation. JF - American Geophysical Union Fall Meeting AU - Yasunari, T J AU - Lau, W K AU - Mahanama, S P AU - Colarco, P R AU - Koster, R D AU - Kim, K AU - da Silva, A AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract C41D EP - 04 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1664434702?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Ensemble+mean+climatology+of+snow+darkening+effect+due+to+deposition+of+dust%2C+black+carbon%2C+and+organic+carbon+as+simulated+with+the+NASA+GEOS-5+Earth+System+Model&rft.au=Yasunari%2C+T+J%3BLau%2C+W+K%3BMahanama%2C+S+P%3BColarco%2C+P+R%3BKoster%2C+R+D%3BKim%2C+K%3Bda+Silva%2C+A%3BAnonymous&rft.aulast=Yasunari&rft.aufirst=T&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-03-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - Thermal insights of the Greenland ice sheet perennial firn aquifer AN - 1664434648; 2015-023062 AB - The Greenland ice sheet hydrology is characterized by a complex system and is triggered essentially by surface melt starting late spring to early summer each year. Understanding the hydrologic system for the ice sheet remains important to address ice dynamics and surface mass balance questions. In April 2011, in southeast Greenland, field work was conducted and firn-core drilling identified the presence of liquid water persisting through the winter without freezing. This observed feature is named perennial firn aquifer (PFA) and can be mapped by the Accumulation Radar on board of the NASA Operation Ice Bridge mission. Even if the extent of this feature can be constrained by remote sensing techniques its formation and persistence mechanism remain unclear. Thermal behavior of the PFA is a key parameter to monitor in order to understand melting and refreezing processes at the PFA location. The PFA-13 site (66.18 degrees N, 39.04 degrees W and 1563 m), located near the 2011 site where the PFA was first identified, was revisited in early April 2013 for further investigations of the aquifer. To characterize the PFA thermal regime and seasonal evolution, we installed two thermistor strings. They are used to record the vertical temperature evolution for a year, from the surface to the bottom of the PFA and below. The data are being uploaded daily via satellite link. Progressive heating of the firn pack is observed from June 15th to the end of July 2013, by then, the entire firn column from the surface to 12 m depth (top of PFA) is at 0 degrees C. This observation brings evidence that meltwater can reach the depth of 12 m in the firn, during one and a half months. By the end of the summer, refreezing is expected from near the surface and the cold surface temperatures will slowly penetrate into the firn. In addition, freshly fallen snow, usually > 2 m over the course of a winter, will help insulate the remaining liquid water within the firn from the surface. We will present the time series of melt progression and fall freeze-up as the PFA becomes isolated from the surface. JF - American Geophysical Union Fall Meeting AU - Forster, R R AU - Miege, C AU - Koenig, L AU - Brucker, L AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract C33B EP - 0714 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1664434648?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Thermal+insights+of+the+Greenland+ice+sheet+perennial+firn+aquifer&rft.au=Forster%2C+R+R%3BMiege%2C+C%3BKoenig%2C+L%3BBrucker%2C+L%3BAnonymous&rft.aulast=Forster&rft.aufirst=R&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-03-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - Spatial and temporal variability of radiative forcing by dust in snow in the Upper Colorado River basin AN - 1664434495; 2015-023094 AB - The majority of the Colorado River's average annual runoff comes from the high-elevation winter snowpack of the Upper Colorado River basin's (UCRB) Rocky Mountains. Considerable research has demonstrated that dust deposition on snow in the southeastern portion of the UCRB accelerates snowmelt and snowpack depletion relative to clean snow. Further research has shown that the interannual variability of dust deposition on snow in the southeastern portion of the UCRB introduces error into the National Weather Service Colorado Basin River Forecast Center's (CBRFC) SNOW-17 and Sac-SMA modeled runoff predictions, where each 10 W m-2 change of snowmelt-period dust forcing results in a corresponding change in runoff prediction bias of 10.0 + or - 1.5% and a 1.5 + or - 0.6 day shift in runoff center of mass. However, the potential impacts of dust deposition on snow in other high-elevation regions within the UCRB are largely unknown. We used the MODIS Dust Radiative Forcing in Snow (MODDRFS) product to determine the spatial and temporal variability of dust radiative forcing in the UCRB between years 2000 and 2010. By analyzing dust forcing in 15 gage catchments throughout the UCRB, we found that the maximum and minimum values (W m-2) of dust forcing in each catchment varied depending upon their proximity and orientation to the prominent dust emission sources in the Colorado Plateau. The seven catchments in closest proximity the Colorado Plateau's east side had the highest maximum and minimum dust forcing values and the largest increases in dust forcing over the 2000 to 2010 analysis period. Therefore, while increased aridity in the Colorado Plateau could result in greater dust deposition on snow in the UCRB, the magnitude of that increase will vary throughout the basin. JF - American Geophysical Union Fall Meeting AU - Burgess, A AU - Painter, T H AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract C41D EP - 01 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1664434495?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Spatial+and+temporal+variability+of+radiative+forcing+by+dust+in+snow+in+the+Upper+Colorado+River+basin&rft.au=Burgess%2C+A%3BPainter%2C+T+H%3BAnonymous&rft.aulast=Burgess&rft.aufirst=A&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-03-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - In situ volcanic plume monitoring with small unmanned aerial systems for cal/val of satellite remote sensing data; CARTA-UAV 2013 mission AN - 1664434436; 2015-023235 AB - The development of small unmanned aerial systems (sUAS) with a variety of sensor packages, enables in situ and proximal remote sensing measurements of volcanic plumes. Using Costa Rican volcanoes as a Natural Laboratory, the University of Costa Rica as host institution, in collaboration with four NASA centers, have started an initiative to develop low-cost, field-deployable airborne platforms to perform volcanic gas & ash plume research, and in-situ volcanic monitoring in general, in conjunction with orbital assets and state-of-the-art models of plume transport and composition. Several gas sensors have been deployed into the active plume of Turrialba Volcano including a miniature mass spectrometer, and an electrochemical SO2 sensor system with temperature, pressure, relative humidity, and GPS sensors. Several different airborne platforms such as manned research aircraft, unmanned aerial vehicles, tethered balloons, as well as man-portable in-situ ground truth systems are being used for this research. Remote sensing data is also collected from the ASTER and OMI spaceborne instruments and compared with in situ data. The CARTA-UAV 2013 Mission deployment and follow up measurements successfully demonstrated a path to study and visualize gaseous volcanic emissions using mass spectrometer and gas sensor based instrumentation in harsh environment conditions to correlate in situ ground/airborne data with remote sensing satellite data for calibration and validation purposes. The deployment of such technology improves on our current capabilities to detect, analyze, monitor, model, and predict hazards presented to aircraft by volcanogenic ash clouds from active and impending volcanic eruptions. JF - American Geophysical Union Fall Meeting AU - Diaz, J A AU - Pieri, D C AU - Bland, G AU - Fladeland, M M AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract V54C EP - 02 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1664434436?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+volcanic+plume+monitoring+with+small+unmanned+aerial+systems+for+cal%2Fval+of+satellite+remote+sensing+data%3B+CARTA-UAV+2013+mission&rft.au=Diaz%2C+J+A%3BPieri%2C+D+C%3BBland%2C+G%3BFladeland%2C+M+M%3BAnonymous&rft.aulast=Diaz&rft.aufirst=J&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-03-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - Examining the role of black carbon and microbial abundance in Greenland ice sheet albedo feedback AN - 1664433210; 2015-023100 AB - The Dark Snow Project targets understanding the record-setting Greenland ice sheet surface melting in the 2012 warm season by partitioning the relative importance of black carbon (and other light absorbing impurities) with thermal metamorphism and microbial absorption. Above 1000 m elevation in the accumulation area, the NASA MODIS sensor validated by ground observations, documents July Greenland ice sheet albedo dropping 6% in the 13 summers beginning in year 2000. At this time, atmospheric laser scans from the NASA CALIPSO sensor retrieved smoke aerosols in contact with the ice sheet. Atmospheric trajectories link that smoke with fires in Labrador and further west. Also at this time, a very persistent extreme in the North Atlantic Oscillation (NAO) drove southern air masses over Greenland, delivering sensible heat while promoting clear sky conditions. It is likely that the NAO dimension of the 2012 melt is key. Yet, in quantitative terms, how important is black carbon and other pollutants in multiplying the albedo feedback over Greenland? A model of the time evolution of snow grain size and ice microbial albedo is developed. Boundary conditions are provided by daily averaged output from the 5 km horizontal resolution Danish Meteorological Institute (DMI) Regional Climate Model HIRHAM5. Systematic bias in the forcing data is reduced by calibration with data from a network of 33 automated energy budget stations (EBSs) merged from Greenland Climate Network (GC-Net) and the Danish Program for the Monitoring of the Greenland Ice Sheet (PROMICE). JF - American Geophysical Union Fall Meeting AU - Box, J E AU - Skiles, M AU - Painter, T H AU - Mottram, R AU - Langen, P L AU - Stibal, M AU - van As, D AU - Fausto, R S AU - Sinclair, P AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract C41D EP - 07 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1664433210?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Examining+the+role+of+black+carbon+and+microbial+abundance+in+Greenland+ice+sheet+albedo+feedback&rft.au=Box%2C+J+E%3BSkiles%2C+M%3BPainter%2C+T+H%3BMottram%2C+R%3BLangen%2C+P+L%3BStibal%2C+M%3Bvan+As%2C+D%3BFausto%2C+R+S%3BSinclair%2C+P%3BAnonymous&rft.aulast=Box&rft.aufirst=J&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-03-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - Characterization of volcanic aerosol properties over liquid water clouds from combined infrared and polarized observations AN - 1660632428; 2015-018709 AB - After the Eyjafjallajokull eruption in spring 2010, the emitted plumes were advected over the Atlantic Ocean, thousands of kilometers away from the sources and sometime in areas covered with low level clouds. The retrieval of these volcanic plume properties which are of uncertain composition and overlying a surface of high and variable reflectance is a challenge for standard radiometric observations based on visible wavelengths. The A-Train provides an unprecedented observational environment, which includes polarized observations from both active and passive instruments onboard CALIPSO and PARASOL. Polarized observations offer the possibility to retrieve the aerosol optical depth above liquid water clouds with a limited error induced by the cloud reflectance variability. Infrared (IR) observations have long been used to characterize volcanic emitted material and it is one of the advantages of the CALIPSO mission to combine IR and lidar instruments to provide co-located observations directly exploitable to improve the characterization of aerosol and clouds. We will describe the underlying principle of the different methodologies based on Polarized and Infrared A-Train observations as well as their applications on a few case studies where we characterize the properties of various kinds of aerosols above liquid water clouds with an emphasis on volcanic ash optical and microphysical properties retrieval. JF - American Geophysical Union Fall Meeting AU - Josset, D B AU - Pelon, J AU - Garnier, A AU - Hu, Y AU - Waquet, Fabien AU - Doppler, Lionel AU - Riedi, Jerome AU - Fischer, Juergen AU - Zhai, Pengwang AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract A51A EP - 0008 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660632428?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+volcanic+aerosol+properties+over+liquid+water+clouds+from+combined+infrared+and+polarized+observations&rft.au=Josset%2C+D+B%3BPelon%2C+J%3BGarnier%2C+A%3BHu%2C+Y%3BWaquet%2C+Fabien%3BDoppler%2C+Lionel%3BRiedi%2C+Jerome%3BFischer%2C+Juergen%3BZhai%2C+Pengwang%3BAnonymous&rft.aulast=Josset&rft.aufirst=D&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-03-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - Atmospheric models for post-giant impact planets AN - 1660632346; 2015-018637 AB - The final assembly of terrestrial planets is now universally thought to have occurred through a series of giant impacts, such as Earth's own Moon-forming impact. These collisions take place over a time interval of about 100 million years, during which time it takes at least 10 collisions between planets to make a Venus or an Earth. In the aftermath of one of these collisions the surviving planet is hot, and can remain hot for millions of years. During this phase of accretion, the proto-terrestrial planet may have a dense steam atmosphere, that will affect both the cooling of the planet and our ability to detect it. Here we explore the atmospheric chemistry, photochemistry, and spectral signatures of post-giant-impact terrestrial planets enveloped by thick atmospheres consisting of vaporized rock material. The atmospheric chemistry is computed self-consistently for atmospheres in equilibrium with hot surfaces, with compositions reflecting either the bulk silicate Earth (BSE, which includes the crust, mantle, atmosphere and oceans) or Earth's continental crust (CC). These two cases allow us to examine differences in atmospheres formed by outgassing of silica-rich (felsic) rocks - like the Earth's continental crust - and MgO- and FeO-rich (mafic) rocks - like the BSE. Studies of detrital zircons from Jack Hills, Australia, show that the continental crust existed 164 million years after the formation of the solar system, in which case the material vaporized in a giant impact should likely reflect the CC composition. However, if at the time of impact the surface of the planet does not yet exhibit the formation of continents, then the BSE case becomes relevant. We compute atmospheric profiles for surface temperatures ranging from 1000 to 2200 K, surface pressures of 10 and 100 bar, and surface gravities of 10 and 30 m/s (super 2) . We account for all major molecular and atomic opacity sources, including collision-induced absorption, to derive the atmospheric structure and compute the reflected and emergent flux. We find that these atmospheres are dominated by H (sub 2) O and CO (sub 2) , while the formation of CH (sub 4) , and NH (sub 3) is quenched due to short dynamical timescales. Other important constituents are HF, HCl, NaCl, and SO (sub 2) . These are apparent in the emerging spectra, and can be indicative that an impact has occurred. Estimates including photochemistry and vertical mixing show that these atmospheres are enhanced in sulfur-bearing species, particularly SO (sub 2) , one of the most important absorbers. At this stage we do not address cloud formation and aerosol opacity. Estimated luminosities for post-impact planets, although lower than predicted by previous models, show that the hottest post-giant-impact planets will be detectable with the planned 30 m-class telescopes. Finally, we use the models to describe the cooling of a post-impact terrestrial planet and briefly investigate its time evolution, which ends as the planet transitions into a more conventional steam atmosphere runaway greenhouse. This calculation brings a significant improvement over previous runaway greenhouse models, by including additional opacity sources and comprehensive line lists for H (sub 2) O and CO (sub 2) . We find that the cooling timescale for post-giant impact Earths ranges between about 10 (super 5) and 10 (super 6) years, where the slower cooling is associated with the planet going through a runaway greenhouse stage. JF - American Geophysical Union Fall Meeting AU - Lupu, R AU - Zahnle, K J AU - Marley, M S AU - Schaefer, L K AU - Fegley, B AU - Morley, C AU - Cahoy, K AU - Freedman, Richard S AU - Fortney, J J AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract A23B EP - 0236 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660632346?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Atmospheric+models+for+post-giant+impact+planets&rft.au=Lupu%2C+R%3BZahnle%2C+K+J%3BMarley%2C+M+S%3BSchaefer%2C+L+K%3BFegley%2C+B%3BMorley%2C+C%3BCahoy%2C+K%3BFreedman%2C+Richard+S%3BFortney%2C+J+J%3BAnonymous&rft.aulast=Lupu&rft.aufirst=R&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-03-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - Multi-decadal declining trend of dust over the Sahel and tropical North Atlantic; connection to North Africa dust sources, precipitation, and climate change AN - 1660631948; 2015-018750 AB - Satellite data and surface observations in the past three decades have shown a reduction of dust over the Sahel and the tropical North Atlantic Ocean. The reduction of Sahel dust has been suggested by the changes of vegetation coverage or precipitations, but the cause of those changes is not clear. We use a global model GOCART to simulate the 30-year variations of dust over North Africa and its transatlantic transport from 1980 to 2009, with a goal to understand the causes of the decline of dust emissions in the North Africa source regions including Sahara and Sahel, the changes of meteorological conditions (wind speed, precipitation) that affect dust emissions, transport, and loading, and the driving forces of these changes. We will discuss the implication of future climate change on dust loading over North African and across the tropical North Atlantic. JF - American Geophysical Union Fall Meeting AU - Chin, M AU - Kim, D AU - Diehl, Thomas L AU - Prospero, J M AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract A53J EP - 01 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660631948?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Multi-decadal+declining+trend+of+dust+over+the+Sahel+and+tropical+North+Atlantic%3B+connection+to+North+Africa+dust+sources%2C+precipitation%2C+and+climate+change&rft.au=Chin%2C+M%3BKim%2C+D%3BDiehl%2C+Thomas+L%3BProspero%2C+J+M%3BAnonymous&rft.aulast=Chin&rft.aufirst=M&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-03-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - Impact of climate change on transpacific transport of dust and sulfate AN - 1660631804; 2015-018692 AB - We use GEOS-5 global tropospheric aerosol simulations to study the transpacific transport of dust and sulfate aerosols under current and potential future (mid-century) climate conditions. We study the relationship between output of dust and sulfate from Asia, and inflow into North America, with meteorological flow patterns/climate indices over the Northern Pacific. We consider the following questions: (1) How does outflow and transpacific transport of dust, sulfate, and its precursor gases, from East Asian source regions change from current to future climate conditions? (2) What is the potential impact of transpacific transport of dust, sulfate, and its precursor gases on aerosol loadings and surface concentrations in North America? (3) How important are direct and semi-direct aerosol-radiative feedbacks on the atmospheric dynamics that control transpacific transport of dust and sulfate, and do those feedbacks become more or less important in a future climate? JF - American Geophysical Union Fall Meeting AU - Fairlie, T D AU - Natarajan, M AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract A41H EP - 0190 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660631804?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Impact+of+climate+change+on+transpacific+transport+of+dust+and+sulfate&rft.au=Fairlie%2C+T+D%3BNatarajan%2C+M%3BAnonymous&rft.aulast=Fairlie&rft.aufirst=T&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-03-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - Large-scale desert dust deposition on the Himalayan snow cover; a climatological perspective from satellite observations AN - 1660631739; 2015-018624 AB - The Himalaya-Tibetan Plateau (HTP) has a profound influence on the Asian climate. The HTP are also among the largest snow/ice-covered regions on the Earth and provide major freshwater resource to the downstream densely-populated regions of Asia. Recent studies indicate climate warming over the HTP amplified by atmospheric heating and deposition of absorbing aerosols (e.g. dust and soot) over the HTP snowpack and glaciers. Recently, greater attention has focused on the effects of soot deposition on accelerated snowmelt and glacier retreat in the HTP, associated with increasing anthropogenic emissions in Asia. On the other hand, the role of transported dust affecting snow albedo/melt is not well understood over the HTP, in spite of the large annual cycle of mineral dust loading, particularly over the northern parts of south Asia during pre-monsoon season. This study addresses the large-scale effects of dust deposition on snow albedo in the elevated HTP from a satellite observational perspective. Dust aerosol transport, from southwest Asian arid regions, is observed in satellite imagery as darkening of the Himalayan snowpack. Additionally, multi-year spaceborne lidar observations, from CALIPSO, also show dust advected to elevated altitudes ( approximately 5 km) over the Himalayan foothills, and episodically reaching the top of the western Himalaya. Spectral surface reflectance analysis of dust-laden snow cover (from MODIS) indicates enhanced absorption in the shorter visible wavelengths, yielding a significant gradient in the visible-near IR reflectance spectrum. While soot in snow is difficult to distinguish from remote sensing, our spectral reflectance analysis of dust detection in the snowpack is consistent with theoretical simulations of snow darkening due to dust impurity. We find that the western HTP, in general, is influenced by enhanced dust deposition due to its proximity to major dust sources (and prevailing dust transport pathways), compared to the eastern HTP. Coinciding with the snowmelt period, dust deposition appears to further cause snow reflectance reduction, i.e. snow darkening, from spring to summer months. Among the entire HTP, we show that the western Himalaya and the Hindu-Kush snowpack are subjected to greater dust deposition and snow albedo reduction. Thus, our satellite-based observational study addresses the spatial variability of large-scale dust deposition on snow cover in the extensive HTP. A climatological and inter-annual perspective of the spatial variability of dust-induced snow darkening over the HTP will be presented, using approximately 10 years of MODIS spectral reflectance data (at high spatial resolution of approximately 1 km). Results from this study provide insight into the particular role of desert dust towards accelerated seasonal snowmelt in the HTP. JF - American Geophysical Union Fall Meeting AU - Gautam, Ritesh AU - Hsu, N Christina AU - Lau, William K AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract A21C EP - 0064 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660631739?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Large-scale+desert+dust+deposition+on+the+Himalayan+snow+cover%3B+a+climatological+perspective+from+satellite+observations&rft.au=Gautam%2C+Ritesh%3BHsu%2C+N+Christina%3BLau%2C+William+K%3BAnonymous&rft.aulast=Gautam&rft.aufirst=Ritesh&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-03-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - Characterizing emissions of volatile organic compounds (VOCs) from oil and natural gas operations in Haynesville, Fayetteville, and Marcellus Shale regions via aircraft observations during SENEX 2013 AN - 1660631615; 2015-018734 AB - The 2013 SENEX (Southeast Nexus) field campaign took place in June and July 2013 with to ascertain how the interaction of natural and anthropogenic emissions influence climate change and air quality throughout the southeastern United States. Five of the research flights utilizing the NOAA WP-3D aircraft focused on areas of intensive oil and natural gas production from various shale plays. These areas included the Haynesville shale in eastern Texas and western Louisiana, the Fayetteville shale in northern Arkansas, and the Marcellus shale in western Pennsylvania. According to the U.S. Energy Information Administration's (EIA) Annual Energy Outlook 2013 report, (1) the Haynesville, Fayetteville, and Marcellus shale collectively account for approximately 75% of the dry shale gas produced in the U.S., and (2) shale gas is expected to provide the largest source of growth in the U.S. natural gas supply over the next few decades. Depending on the particular shale formation, raw natural gas can contain significant amounts of non-methane hydrocarbons in the form of natural gas liquids (e.g., ethane, propane, butanes) and natural gas condensate (e.g., pentanes, cycloalkanes, and aromatics). Trace gases including methane, aromatics, formaldehyde, other oxygenated VOCs, carbon monoxide, and nitrogen oxides were measured by multiple instruments aboard the NOAA WP-3D research aircraft. Up to 72 whole air samples (WAS) were collected in flight and analyzed in the field post-flight for a variety of volatile organic compounds (VOCs). Whole air samples provide a detailed chemical snapshot that can be combined with higher time-resolved measurements in order to provide a more comprehensive chemical analysis. In this presentation, we will compare the emissions composition of the Haynesville, Fayetteville, and Marcellus shale plays to investigate the relative importance of primary VOC emissions on the formation of secondary pollutants such as ozone, oxygenated VOCs, and secondary organic aerosol. JF - American Geophysical Union Fall Meeting AU - Gilman, Jessica AU - Lerner, Brian M AU - Dumas, Megan AU - Hughes, D AU - Jaksich, A AU - Hatch, C D AU - Graus, Martin AU - Peischl, Jeff AU - Pollack, Ilana B AU - Ryerson, Thomas B AU - Holloway, John AU - Trainer, Michael AU - Aikin, Kenneth AU - Kaiser, J AU - Keutsch, F N AU - Wolfe, G M AU - Hanisco, Thomas F AU - Warneke, Carsten AU - de Gouw, Joost A AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract A53A EP - 0143 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660631615?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+emissions+of+volatile+organic+compounds+%28VOCs%29+from+oil+and+natural+gas+operations+in+Haynesville%2C+Fayetteville%2C+and+Marcellus+Shale+regions+via+aircraft+observations+during+SENEX+2013&rft.au=Gilman%2C+Jessica%3BLerner%2C+Brian+M%3BDumas%2C+Megan%3BHughes%2C+D%3BJaksich%2C+A%3BHatch%2C+C+D%3BGraus%2C+Martin%3BPeischl%2C+Jeff%3BPollack%2C+Ilana+B%3BRyerson%2C+Thomas+B%3BHolloway%2C+John%3BTrainer%2C+Michael%3BAikin%2C+Kenneth%3BKaiser%2C+J%3BKeutsch%2C+F+N%3BWolfe%2C+G+M%3BHanisco%2C+Thomas+F%3BWarneke%2C+Carsten%3Bde+Gouw%2C+Joost+A%3BAnonymous&rft.aulast=Gilman&rft.aufirst=Jessica&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-03-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - The Saharan aerosol long-range transport and aerosol-cloud-interaction experiment SALTRACE 2013; overview and early results AN - 1660631494; 2015-018721 AB - Mineral dust is an important player in the global climate system. In spite of substantial progress in the past decade, many questions in our understanding of the atmospheric and climate effects of mineral dust remain open such as the change of the dust size distribution during transport across the Atlantic Ocean and the associated impact on the radiation budget, the role of wet and dry dust removal mechanisms during transport, and the complex interaction between mineral dust and clouds. To close gaps in our understanding of mineral dust in the climate system, the Saharan Aerosol Long-range Transport and Aerosol-Cloud-Interaction Experiment (SALTRACE: http://www.pa.op.dlr.de/saltrace) was conducted in June/July 2013. SALTRACE is a German initiative combining ground-based and airborne in-situ and lidar measurements with meteorological data, long-term measurements, satellite remote sensing and modeling. During SALTRACE, the DLR research aircraft Falcon was based on Sal, Cape Verde, between 11 and 17 June, and on Barbados between 18 June and 11 July 2013. The Falcon was equipped with a suite of in-situ instruments for the measurement of microphysical and optical aerosol properties and with a nadir-looking 2-mu m wind lidar. Ground-based lidar and in-situ instruments were deployed in Barbados and Puerto Rico. Mineral dust from several dust outbreaks was measured by the Falcon between Senegal and Florida. On the eastern side of the Atlantic, dust plumes extended up to 6 km altitude, while the dust layers in the Caribbean were mainly below 4.5 km. The aerosol optical thickness of the dust outbreaks studied ranged from 0.2 to 0.6 at 500 nm in Barbados. Highlights during SALTRACE included the sampling of a dust plume in the Cape Verde area on 17 June which was again measured with the same instrumentation on 21 and 22 June near Barbados. The event was also captured by the ground-based lidar and in-situ instrumentation. Another highlight was the formation of tropical storm Chantal in the dusty environment. We give an overview of the SALTRACE measurements and show early results covering profiles of dust size distributions, dust optical properties and the investigation of the impact of dust aging processes between the Cape Verde region and Florida. JF - American Geophysical Union Fall Meeting AU - Weinzierl, B AU - Ansmann, A AU - Reitebuch, O AU - Freudenthaler, V AU - Mueller, T AU - Kandler, K AU - Althausen, D AU - Busen, R AU - Dollner, M AU - Doernbrack, Andreas AU - Farrell, D A AU - Gross, S AU - Heimerl, K AU - Klepel, A AU - Kristensen, T B AU - Mayol-Bracero, O L AU - Minikin, Andreas AU - Prescod, D AU - Prospero, J M AU - Rahm, Stephan AU - Rapp, Markus AU - Sauer, Daniel N AU - Schaefler, Andreas AU - Toledano, C AU - Vaughan, Mark AU - Wiegner, M AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract A52D EP - 02 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660631494?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+Saharan+aerosol+long-range+transport+and+aerosol-cloud-interaction+experiment+SALTRACE+2013%3B+overview+and+early+results&rft.au=Weinzierl%2C+B%3BAnsmann%2C+A%3BReitebuch%2C+O%3BFreudenthaler%2C+V%3BMueller%2C+T%3BKandler%2C+K%3BAlthausen%2C+D%3BBusen%2C+R%3BDollner%2C+M%3BDoernbrack%2C+Andreas%3BFarrell%2C+D+A%3BGross%2C+S%3BHeimerl%2C+K%3BKlepel%2C+A%3BKristensen%2C+T+B%3BMayol-Bracero%2C+O+L%3BMinikin%2C+Andreas%3BPrescod%2C+D%3BProspero%2C+J+M%3BRahm%2C+Stephan%3BRapp%2C+Markus%3BSauer%2C+Daniel+N%3BSchaefler%2C+Andreas%3BToledano%2C+C%3BVaughan%2C+Mark%3BWiegner%2C+M%3BAnonymous&rft.aulast=Weinzierl&rft.aufirst=B&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-03-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - Earth through time as an exoplanet; lessons for exoplanet astrobiology AN - 1660631382; 2015-018636 AB - The Archean Earth represents the most alien biosphere for which we have data. Oxygenic photosynthesis was not the dominant primary production metabolism at the surface, as it is on modern-day Earth. Due to this, the atmospheric composition, climate, and ocean chemistry of the planet were all dramatically different than they are on today's planet. These dramatic differences are instructive on biology in a planetary context. Furthermore, they provide an example of a "working inhabited planet" that would have different biosignatures. We can thus use the lessons from the rock record to inform us about the possibilities for and improve our ability to search for life. When we do that, we discover that by looking strictly for the "traditional" biosignatures from methane, oxygen, and ozone, we may conclude dead planets to be alive and living planets to be dead. In this talk, we will discuss these issues and their implications for future space-based observatories designed to search for life beyond the solar system. JF - American Geophysical Union Fall Meeting AU - Domagal-Goldman, S D AU - Meadows, V S AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract A23B EP - 0235 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660631382?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+through+time+as+an+exoplanet%3B+lessons+for+exoplanet+astrobiology&rft.au=Domagal-Goldman%2C+S+D%3BMeadows%2C+V+S%3BAnonymous&rft.aulast=Domagal-Goldman&rft.aufirst=S&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-03-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - Imaginary refractive index and other microphysical properties of volcanic ash, Sarahan dust, and other mineral aerosols AN - 1660631365; 2015-018684 AB - Aerosol properties are essential to support remote sensing measurements, atmospheric circulation and climate models. This research aims to improve the understanding of the optical and microphysical properties of different types of aerosols particles. Samples of volcanic ash, Saharan dust and other mineral aerosols particles were analyzed by different techniques. Ground samples were sieved down to 45 um, de-agglomerated and resuspended in the laboratory using a Fluidized Bed Aerosol Generator (FBAG). Particles were collected on Nuclepore filters into PM10, PM2.5, or PM1.0. and analyzed by different techniques, such as Scanning Electron Microscopy (SEM) for determination of size distribution and shape, spectral reflectance for determination of the optical absorption properties as a function of the wavelength, material density, and X-Ray fluorescence for the elemental composition. The spectral imaginary part of refractive index from the UV to the short wave infrared (SWIR) wavelength was derived empirically from the measurements of the spectral mass absorption coefficient, size distribution and density of the material. Some selected samples were also analyzed with the Polarized Imaging Nephelometer (PI-Neph) instrument for the characterization of the aerosol polarized phase function. This work compares results of the spectral refractive index of different materials obtained by our methodology with those available in the literature. In some cases there are significant differences both in magnitude and spectral dependence of the imaginary refractive index. These differences are evaluated and discussed in this work. JF - American Geophysical Union Fall Meeting AU - Rocha Lima, A AU - Martins, J AU - Krotkov, Nikolay A AU - Artaxo, P AU - Todd, M AU - Ben Ami, Y AU - Dolgos, G AU - Espinosa, R AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract A41G EP - 0155 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660631365?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Imaginary+refractive+index+and+other+microphysical+properties+of+volcanic+ash%2C+Sarahan+dust%2C+and+other+mineral+aerosols&rft.au=Rocha+Lima%2C+A%3BMartins%2C+J%3BKrotkov%2C+Nikolay+A%3BArtaxo%2C+P%3BTodd%2C+M%3BBen+Ami%2C+Y%3BDolgos%2C+G%3BEspinosa%2C+R%3BAnonymous&rft.aulast=Rocha+Lima&rft.aufirst=A&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-03-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - Effect of multi-decadal variation of SST on rainfall and dust transport over West Africa and northern Atlantic Ocean AN - 1660631355; 2015-018623 AB - Effects of multi-decadal variation of SST on the West African monsoon rainfall and circulation, and consequent change in dust emission and transport are examined based on model experiments with NASA GEOS-5 GCM with prescribed SST. Based on Singular Value Decomposition (SVD) between Sahel rainfall and global SST distribution, SST patterns representing 1950's and 1980's are selected and prescribed for 7-year simulation for each experiment. With 1950's SST, model produced weakened subtropical high, stronger cross equatorial flows, and enhanced rainfall in ITCZ and Sahel compared to the 1980's. Due to weakened surface winds, dust emission is reduced over the most of Sahel. Dust transport is reduced in the deep tropics, due to an increased wet deposition in the ITCZ and a weakening of the subtropical high. Increased dust transport associated with more frequent Saharan dust outbreak is found between 20N-25N. To examine the effect of aerosol radiative forcing, additional experiments are conducted by disabling dust radiative feedback. In this talk, the role of increased dust radiative forcing during dry Sahel on the West Africa monsoon rainfall and circulation will be also discussed. JF - American Geophysical Union Fall Meeting AU - Kim, K AU - Lau, William K AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract A13M EP - 04 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660631355?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+multi-decadal+variation+of+SST+on+rainfall+and+dust+transport+over+West+Africa+and+northern+Atlantic+Ocean&rft.au=Kim%2C+K%3BLau%2C+William+K%3BAnonymous&rft.aulast=Kim&rft.aufirst=K&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-03-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - Laboratory and modeling studies for the effect of atmospheric organics on iron bioavailability AN - 1660631224; 2015-018677 AB - Iron delivered to the ocean's surface through atmospheric pathways is of specific interest for the marine environment and plays a vital role in the earth's biogeochemical cycle. The deposition of atmospheric iron to the ocean's surface may be an important control on primary productivity in vast areas of the global oceans. Near source regions, iron is primarily bound in the form of insoluble iron-oxyhydroxides and aluminosilicate minerals. Once airborne, however, iron can be mobilized from the minerals through the effect of acidic trace gases, organic acids, and sunlight initiating a complex cycling between ferric (Fe(III)) and ferrous (Fe(II)) forms of iron. Due to the higher solubility of many Fe(II) salts compared to Fe(III) salts, light-induced photochemical cycling of iron in the presence of different levels of hydrogen peroxide and organic compounds could strongly influence iron mobilization in atmospheric aerosols and cloud droplets. In this study the role of atmospheric organics on biogeochemical cycling of iron is examined. Experiments were conducted to quantify effects of atmospheric organics on 1) Fe(II)/Fe(III) cycling in aqueous aerosols and cloud droplets and 2) bioavailability of iron after deposition to the ocean's surface. Fe(II) was detected by absorbance spectrophotometry using the Ferrozine technique and total soluble iron was determined by addition of hydroxylamine to reduce Fe(III) to Fe(II). Model simulations have also been conducted to quantify the effects of identified atmospheric organic ligands on Fe bioavailability for the surface ocean. Our results indicate that atmospheric organics, when mixed with mineral dust, could play an important role for both mobilization of Fe from weakly-soluble minerals and keeping dissolved Fe in bioavailable form after its deposition to the surface ocean. Results of this study may have important implications for marine biogeochemistry and global carbon cycle. JF - American Geophysical Union Fall Meeting AU - Hurley, D AU - Meskhidze, N AU - Petters, Markus D AU - Johnson, Matthew S AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract A41G EP - 0140 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660631224?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Laboratory+and+modeling+studies+for+the+effect+of+atmospheric+organics+on+iron+bioavailability&rft.au=Hurley%2C+D%3BMeskhidze%2C+N%3BPetters%2C+Markus+D%3BJohnson%2C+Matthew+S%3BAnonymous&rft.aulast=Hurley&rft.aufirst=D&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-03-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - The origin of carbon-bearing volatiles in Surprise Valley hot springs in the Great Basin; carbon isotope and water chemistry characterizations AN - 1660631056; 2015-020845 AB - There are numerous hydrothermal fields within the Great Basin of North America, some of which have been exploited for geothermal resources. With methane and other carbon-bearing compounds being observed, however, their origins and formation conditions remain unknown. Thus, studying hydrothermal springs in this area provides us an opportunity to understand subsurface (bio)chemical processes that generate organic compounds, and aid in future development and exploration of potential energy resources as well. While isotope measurement has long been used for identification of their origins, there are secondary processes that may generate variations in isotopic compositions: oxidation, re-equilibration of methane and other alkanes with CO (sub 2) , mixing with compounds of other sources, etc. Therefore, in addition to isotopic analysis, other lines of evidence, including water chemistry and rock compositions, are necessary to identify origins of volatile compounds. Surprise Valley Hot Springs (SVHS, 41 degrees 32'N, 120 degrees 5'W), located in a typical basin and range province in northeastern California, is a terrestrial hydrothermal spring system of the Great Basin. Previous geophysical studies indicated the presence of clay-rich volcanic and sedimentary rocks of Tertiary age beneath the lava flows during late Tertiary and Quaternary. Water and gas samples were collected for a variety of chemical and isotope composition analyses, including in-situ pH, alkalinity, oxidation reduction potential (ORP), major and trace elements, and C and H isotope measurements. Fluids issuing from SVHS can be classified as Na-(Cl)-SO (sub 4) type, with the major cation and anion being Na (super +) and SO (sub 4) (super 2-) , respectively. Thermodynamic calculation using ORP and major element data indicated that sulfate is the most dominant sulfur species, which is consistent with anion analysis results. Aquifer temperatures at depth estimated by both dissolved SiO (sub 2) and Na-K-Ca geothermometers are in the range of 125.0 to 135.4 degrees C, and higher than the values measured at orifices (77.3 to 90.0 degrees C). CO (sub 2) and homologs of straight chain alkanes (C (sub 1) -C (sub 5) ) were identified in gas samples. Carbon isotope values of alkanes increase with carbon numbers. The (super 13) C fractionation between CO (sub 2) and dissolved inorganic carbon suggests they are out of carbon isotope equilibrium. The hypothesis regarding the formation of carbon-bearing compounds in SVHS may involve two processes: 1) Under high heat flow conditions caused by regional faulting and crustal extension, original high molecular weight organic compounds (kerogens) in clay-rich rocks decomposed to generate methane and other alkanes. 2) The SVHS area is associated with outflow structures, and distant from the heat source. Anaerobic oxidation of methane with sulfate at shallow depth (< 90 degrees C) is suggested as being responsible for the generation of CO (sub 2) in SVHS. JF - American Geophysical Union Fall Meeting AU - Fu, Q AU - Socki, R AU - Niles, Paul B AU - Romanek, C S AU - Datta, S AU - Darnell, M AU - Bissada, A K AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract B13E EP - 0561 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660631056?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+origin+of+carbon-bearing+volatiles+in+Surprise+Valley+hot+springs+in+the+Great+Basin%3B+carbon+isotope+and+water+chemistry+characterizations&rft.au=Fu%2C+Q%3BSocki%2C+R%3BNiles%2C+Paul+B%3BRomanek%2C+C+S%3BDatta%2C+S%3BDarnell%2C+M%3BBissada%2C+A+K%3BAnonymous&rft.aulast=Fu&rft.aufirst=Q&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-03-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - Microbial metabolism in serpentinite fluids AN - 1660630943; 2015-020909 AB - Serpentinization is the process in which ultramafic rocks, characteristic of the upper mantle, react with water liberating mantle carbon and reducing power to potenially support chemosynthetic microbial communities. These communities may be important mediators of carbon and energy exchange between the deep Earth and the surface biosphere. Our work focuses on the Coast Range Ophiolite Microbial Observatory (CROMO) in Northern California where subsurface fluids are accessible through a series of wells. Preliminary analyses indicate that the highly basic fluids (pH 9-12) have low microbial diversity, but there is limited knowledge about the metabolic capabilities of these communties. Metagenomic data from similar serpentine environments [1] have identified Betaproteobacteria belonging to the order Burkholderiales and Gram-positive bacteria from the order Clostridiales as key components of the serpentine microbiome. In an effort to better characterize the microbial community, metabolism, and geochemistry at CROMO, fluids from two representative wells (N08B and CSWold) were sampled during recent field campaigns. Geochemical characterization of the fluids includes measurements of dissolved gases (H (sub 2) , CO, CH (sub 4) ), dissolved inorganic and organic carbon, volatile fatty acids, and nutrients. The wells selected can be differentiated in that N08B had higher pH (10-11), lower dissolved oxygen, and cell counts ranging from 105-106 cells mL (super -1) of fluid, with an abundance of the betaproteobacterium Hydrogenophaga. In contrast, fluids from CSWold have slightly lower pH (9-9.5), DO, and conductivity, as well as higher TDN and TDP. CSWold fluid is also characterized for having lower cell counts ( approximately 103 cells mL (super -1) ) and an abundance of Dethiobacter, a taxon within the phylum Clostridiales. Microcosm experiments were conducted with the purpose of monitoring carbon fixation, methanotrophy and metabolism of small organic compounds, such as acetate and formate, while tracing changes in fluid chemistry and microbial community composition. These experiments are expected to provide insight into the biogeochemical dynamics of the serpentinite subsurface at CROMO and represent a first step for developing metatranscriptomic and RNA-based Stable Isotope Probing (RNA-SIP) experiments to trace microbial activity at this site. [1] Brazelton et al. (2012) Frontiers in Microbiology 2:268 JF - American Geophysical Union Fall Meeting AU - Crespo-Medina, M AU - Brazelton, W J AU - Twing, K I AU - Kubo, M AU - Hoehler, T M AU - Schrenk, M O AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract B24A EP - 05 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660630943?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Microbial+metabolism+in+serpentinite+fluids&rft.au=Crespo-Medina%2C+M%3BBrazelton%2C+W+J%3BTwing%2C+K+I%3BKubo%2C+M%3BHoehler%2C+T+M%3BSchrenk%2C+M+O%3BAnonymous&rft.aulast=Crespo-Medina&rft.aufirst=M&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-03-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - Environmental dynamics and the habitability potential at Gale Vrater, Mars AN - 1660630858; 2015-020906 AB - The assessment of environmental habitability potential involves measurement of the chemical and physical attributes of the system as well as their dynamic interplay. The environmental dynamics describe the availability of both energy sources and raw materials for meeting the requirements of organisms and for altering the environment. Energetic exchange can also determine the preservation potential for organic materials in the rock record. During its first year at Gale Crater, the Mars Science Laboratory payload has directly measured the chemistry and physical attributes, e.g., temperature, humidity, radiation, pressure, etc. of the martian atmosphere. Curiosity has also acquired chemical and mineralogical data, both from a wind drift deposit of fines and from two examples of a sedimentary rock formation in a region of Gale Crater called Yellowknife Bay, some 445 meters to the east of Bradbury Landing, where Curiosity initially touched down. These data enabled inferences to be made regarding depositional environment and past habitability potential at Gale Crater. The rock chemistry data reveal signs of aqueous interaction i.e., H (sub 2) O, OH and H (sub 2) and sufficient elemental basis (C, H, O, S and possibly N) for plausible nutrient supply, should Mars have ever had autotrophic prokaryotes to exploit it, and a range of redox conditions tolerable to Earth microbes is indicated by the presence of clay minerals. Curiosity's observations of the chemical, physical and geologic features of Yellowknife Bay point to a formerly habitable environment. JF - American Geophysical Union Fall Meeting AU - Conrad, P G AU - Eigenbrode, J L AU - Atreya, S K AU - Blake, David AU - Coll, P J AU - de la Torre Juarez, Manuel AU - Edgett, K S AU - Fairen, A AU - Fisk, M R AU - Franz, Heather AU - Glavin, Daniel P AU - Gomez, F G AU - Haberle, Robert M AU - Hamilton, V E AU - Leshin, L A AU - Martin-Torres, F J AU - Martinez-Frias, J AU - McAdam, Amy AU - McKay, C P AU - Ming, Douglas W AU - Navarro-Gonzalez, R AU - Pavlov, Alexander AU - Steele, A AU - Stern, Jennifer C AU - Zorzano, M AU - Mahaffy, Paul R AU - Grotzinger, J P AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract B24A EP - 01 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660630858?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+dynamics+and+the+habitability+potential+at+Gale+Vrater%2C+Mars&rft.au=Conrad%2C+P+G%3BEigenbrode%2C+J+L%3BAtreya%2C+S+K%3BBlake%2C+David%3BColl%2C+P+J%3Bde+la+Torre+Juarez%2C+Manuel%3BEdgett%2C+K+S%3BFairen%2C+A%3BFisk%2C+M+R%3BFranz%2C+Heather%3BGlavin%2C+Daniel+P%3BGomez%2C+F+G%3BHaberle%2C+Robert+M%3BHamilton%2C+V+E%3BLeshin%2C+L+A%3BMartin-Torres%2C+F+J%3BMartinez-Frias%2C+J%3BMcAdam%2C+Amy%3BMcKay%2C+C+P%3BMing%2C+Douglas+W%3BNavarro-Gonzalez%2C+R%3BPavlov%2C+Alexander%3BSteele%2C+A%3BStern%2C+Jennifer+C%3BZorzano%2C+M%3BMahaffy%2C+Paul+R%3BGrotzinger%2C+J+P%3BAnonymous&rft.aulast=Conrad&rft.aufirst=P&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-03-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - Salt profile in sedimentary deposits; an archive of past climate and tectonics AN - 1656038597; 2015-012999 AB - In hyper-arid environments, paleoclimatic and paleoenvironmental studies typically evaluate paleosol-based proxies such as morphology, variation of remnant vegetations, and geochemical and isotopic signatures of minerals to reveal the plaeoclimatic changes. Limited works utilized geochemical/isotopic approaches in sedimentary deposits which barely experience pedogenic processes. The objectives of this work are to evaluate the isotopic systematics and total chemistry of salts as function of depth within unsolidated sediments in an effort to reconstruct paleoclimatic conditions of Atacama Desert. Results of this work will demonstrate techniques that can also be applied in other hyper-arid environments (e.g., Antarctica, Mars). We report a study on a approximately 75 meter thick core from alluvial sedimentary deposits (Atacama Gravels) in the eastern margin of the central depression of Atacama desert, North Chile. This work combines mineralogical/geochemical/isotopic approaches to decipher the depositional conditions and the climatic conditions during and between sedimentation events. Our main focus is on the soluble sulfate, nitrate, chloride profiles through the sediments. These salt deposits likely originated from seasalts, atmospherically produced salts and/or salts from nearby evaporite deposits. The sources of salts are likely affected by offshore oceanic currents that may vary the seasalt input, or by regional tectonic or orogenic changes that may vary the terrestrial sources and their ratio with seasalt input. The outflux of the salts in these deposits are mainly due to groundwater drainage, and microbial facilitated salt consumption (e.g. sulfate reduction, denitrification), both of which are indicative of paleoclimatic conditions. Thus, the salt profile within the sediments records regional paleo-climate, global oceanic current setting, and regional tectonic activity. Morphological and mineralogical studies show that the target "gravel" consists of two main suites of sediments with a top layer ( approximately 35 meters) of alluvial deposits with no sign of standing water, and a bottom layer ( approximately 40 meters) of possible fluvial deposits. Salt concentration profiles indicate that interaction between salt inventories in these two suites were negligible. The multiple isotope compositions (D17O, delta 34S and delta 18O) of sulfates show distinct depth dependent pattern with all three parameters within top layer close to those of modern surface materials, and with decreasing D17O , delta 34S, and increasing delta 18O within bottom layer. Furthermore, with age constraint by dating a volcanic ash layer imbedded in a top layer, the isotope data indicate that the current level of hyper-aridity of the eastern margin of the central depression has been present since at least 10Ma. Our study and future modeling work may provide an analog for the study of martian environments, e.g. the Aeolis Mons in the center of Gale Crater, where salt enriched alluvial or aeolian deposits are likely to have been deposited under hyper-arid conditions. JF - American Geophysical Union Fall Meeting AU - Sun, T AU - Bao, H AU - Reich, M AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract V21A EP - 2698 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 06A:Sedimentary petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656038597?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Salt+profile+in+sedimentary+deposits%3B+an+archive+of+past+climate+and+tectonics&rft.au=Sun%2C+T%3BBao%2C+H%3BReich%2C+M%3BAnonymous&rft.aulast=Sun&rft.aufirst=T&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-02-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - Bacterial growth in a simulated Martian subsurface environment AN - 1656038471; 2015-012994 AB - The ability of microorganisms to grow under Martian conditions has implications in both the search for life and habitability of Mars as well as the potential contamination of Mars by landing spacecraft. Factors that inhibit the growth of organisms on Mars include UV radiation, low pressure and temperature, CO2 atmosphere, lack of liquid water, and extreme desiccation. Yet a possible biozone capable of supporting microbial life on Mars exists in the shallow subsurface where there is protection from harsh UV rays. In addition, the presence of widespread subsurface ice, confirmed by the Phoenix Lander, offers a water source as the ice sublimates through the upper soil. Here we will determine the ability of the organism Halomonas desiderata strain SP1 to grow in the simulated Martian subsurface environment. Halomonas was chosen as the bacteria of interest due to its tolerance to extreme environments, including carrying salt concentrations and pH. Experiments were carried out in the Mars Simulation Chamber, where temperatures, pressures, and atmospheric composition can be closely monitored to simulate Martian conditions. A series of stress experiments were conducted to observe Halomonas's ability to withstand exposure to a Mars analog soil, freezing temperatures, anoxic conditions, and low pressures. We have determined that Halomonas is able to survive exposures to low temperatures, pressures, and anoxic conditions. We will report on the survival and growth of Halomonas in the simulated Martian permafrost under low (6-10 mbar) atmospheric pressures. JF - American Geophysical Union Fall Meeting AU - Kronyak, R E AU - Pavlov, A AU - House, C H AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract V21A EP - 2693 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656038471?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Bacterial+growth+in+a+simulated+Martian+subsurface+environment&rft.au=Kronyak%2C+R+E%3BPavlov%2C+A%3BHouse%2C+C+H%3BAnonymous&rft.aulast=Kronyak&rft.aufirst=R&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-02-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - Olivine weathering and sulfate formation under cryogenic conditions AN - 1656038326; 2015-012997 AB - High resolution photography and spectroscopy of the martian surface (MOC, HiRISE) from orbit has revolutionized our view of Mars with one of the most important discoveries being wide-spread layered sedimentary deposits associated with sulfate minerals across the low to mid latitude regions of Mars. The mechanism for sulfate formation on Mars has been frequently attributed to playa-like evaporative environments under prolonged warm conditions. An alternate view of the ancient martian climate contends that prolonged warm temperatures were never present and that the atmosphere and climate has been similar to modern conditions throughout most of its history. This view has had a difficult time explaining the sedimentary history of Mars and in particular the presence of sulfate minerals which seemingly need more water. We suggest here that mixtures of atmospheric aerosols, ice, and dust have the potential for creating small films of cryo-concentrated acidic solutions that may represent an important unexamined environment for understanding weathering processes on Mars. This study seeks to test whether sulfate formation may be possible at temperatures well below 0 degrees C in water limited environments removing the need for prolonged warm periods to form sulfates on early Mars. To test this idea we performed laboratory experiments to simulate weathering of mafic minerals under Mars-like conditions. The weathering rates measured in this study suggest that fine grained olivine on Mars would weather into sulfate minerals in short time periods if they are exposed to H2SO4 aerosols at temperatures at or above -40 degrees C. In this system, the strength of the acidic solution is maximized through eutectic freezing in an environment where the silicate minerals are extremely fine grained and have high surface areas. This provides an ideal environment despite the very low temperatures. On Mars the presence of large deposits of mixed ice and dust is undisputed. The presence of substantial sulfur-rich volcanism, and sulfur-rich surface deposits also makes it very likely that sul-fate aerosols have also been an important component of the martian atmosphere. Thus mixtures of ice, dust, and sulfate aerosols are likely to have been common on the martian surface. Given the fact that it is not difficult to achieve surface temperatures above -40 degrees C on Mars throughout its history, it seems likely that sulfate formation on Mars is controlled by the availability of sulfate aerosols and not by the martian climate. The current polar regions of Mars and Earth provide interesting analogs. Large regions of sulfate-rich material have been detected on and around the modern north polar region of Mars. The prevalence of ice-dust mixtures in this region and the existence of sulfates within the ice cap itself are strong evidence for the origin of the sulfates from inside the ice deposits. In addition sulfates have been found in ice deposits in Greenland and Mount Fuji on Earth that have been attributed to forming within the ice deposit. These sulfates can form either through interaction with dust particles in the atmosphere or through weathering inside the ice itself. JF - American Geophysical Union Fall Meeting AU - Niles, P B AU - Golden, D C AU - Michalski, J R AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract V21A EP - 2696 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 01A:General mineralogy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656038326?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Olivine+weathering+and+sulfate+formation+under+cryogenic+conditions&rft.au=Niles%2C+P+B%3BGolden%2C+D+C%3BMichalski%2C+J+R%3BAnonymous&rft.aulast=Niles&rft.aufirst=P&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-02-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - Terrestrial occurrence of perchlorate and the relationship to nitrate in arid and semi-arid areas AN - 1656037027; 2015-012989 AB - Indigenous perchlorate (ClO (sub 4) (super -) ) is of increasing interest due to its wide spread occurrence on Earth and Mars. In addition, ClO (sub 4) (super -) has a number of attributes that may facilitate life and it appears that the metabolic ability to reduce ClO (sub 4) (super -) may be quite ancient. There are numerous reports of natural terrestrial ClO (sub 4) (super -) occurrence, deposition, and production but little information exists on the relative occurrence of ClO (sub 4) (super -) to other major anions, stability of ClO (sub 4) (super -) , and the long term variations in ClO (sub 4) (super -) production that may have led to the observed distributions. ClO (sub 4) (super -) is chemically stable under typical environmental conditions but can be reduced by some bacteria under anoxic conditions. We evaluated samples of soils/caliches and groundwater from a number of arid and semi-arid areas including multiple areas of the U.S. southwest (Edwards Aquifer, Rio Grande Basin, and Amargosa Desert), southern Africa, United Arab Emirates, China (3 locations, including the massive Turpan-Hami NO (sub 3) (super -) deposits ), Antarctica, and large areas of the Atacama Desert in Chile. NO (sub 3) (super -) and ClO (sub 4) (super -) concentrations in soils/caliches were highly correlated (r>0.75) at each location and generally for groundwater samples (r=0.60-0.97). Average NO (sub 3) (super -) /ClO (sub 4) (super -) molar ratios were generally lower and less variable in groundwaters (11,000 to 61,000) and somewhat higher and more variable for soils/caliches (12,000 to 120,000) excluding Atacama Desert samples. These ratios are bracketed by the range of ratios observed in dry and wet deposition in the United States. In contrast, NO (sub 3) (super -) /ClO (sub 4) (super -) molar ratios of Atacama samples are an order of magnitude lower (1,400) than any other location evaluated or any measured deposition. The isotopic composition of NO (sub 3) (super -) (delta (super 15) N, delta (super 18) O, and Delta (super 17) O) varies substantially among the sites. Sites that contain atmospheric NO (sub 3) (super -) primarily (Turpan-Hami and Atacama) if not solely (Antarctica Dry Valley), based on delta (super 18) O and Delta (super 17) O values, tend to have relatively low NO (sub 3) (super -) /ClO (sub 4) (super -) ratios, possibly indicating addition of biogenic NO (sub 3) (super -) at more biologically active sites, which generally have higher NO (sub 3) (super -) /ClO (sub 4) (super -) ratios. However, the extreme low ratio for the Atacama Desert cannot simply be due to preservation and lack of biogenic input unless some other ClO (sub 4) (super -) source is present. Sites with high Delta (super 17) O values in NO (sub 3) (super -) (presumably from atmospheric reactions involving ozone) commonly also contain ClO (sub 4) (super -) with high Delta (super 17) O, but there is not a good correlation between these isotope values. Currently, there is no simple mechanism that can explain observed variations in NO (sub 3) (super -) /ClO (sub 4) (super -) ratios and stable isotopic compositions. Potential variables may include catalyzed isotopic exchange, local ClO (sub 4) (super -) production on soils or in brines, and global variation in sources of atmospheric precursors. JF - American Geophysical Union Fall Meeting AU - Jackson, W A AU - Bohlke, J K AU - Sevanthi, R AU - Bexfield, L AU - Fahlquist, L AU - Andraski, B J AU - Gates, J B AU - Eckardt, F D AU - Gu, B AU - Rao, B AU - Davila, A AU - Sturchio, N C AU - Hatzinger, P B AU - Harvey, G AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract V21A EP - 2688 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656037027?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Terrestrial+occurrence+of+perchlorate+and+the+relationship+to+nitrate+in+arid+and+semi-arid+areas&rft.au=Jackson%2C+W+A%3BBohlke%2C+J+K%3BSevanthi%2C+R%3BBexfield%2C+L%3BFahlquist%2C+L%3BAndraski%2C+B+J%3BGates%2C+J+B%3BEckardt%2C+F+D%3BGu%2C+B%3BRao%2C+B%3BDavila%2C+A%3BSturchio%2C+N+C%3BHatzinger%2C+P+B%3BHarvey%2C+G%3BAnonymous&rft.aulast=Jackson&rft.aufirst=W&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-02-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - Carbonate mineral formation on Mars; clues from stable isotope variations seen in cryogenic laboratory studies of carbonate salts AN - 1656036965; 2015-013003 AB - The geologic history of water on the planet Mars is intimately connected to the formation of carbonate minerals through atmospheric CO (sub 2) and its control of the climate history of Mars. Carbonate mineral formation under modern martian atmospheric conditions could be a critical factor in controlling the martian climate in a means similar to the rock weathering cycle on Earth. The combination of evidence for liquid water on the martian surface and cold surface conditions suggest fluid freezing could be very common on the surface of Mars. Cryogenic calcite forms readily when a rise in pH occurs as a result of carbon dioxide degassing quickly from freezing Ca-bicarbonate-rich water solutions. This is a process that has been observed in some terrestrial settings such as arctic permafrost cave deposits, lakebeds of the Dry Valleys of Antarctica, and in aufeis (river icings) from rivers of N.E. Alaska. We report here the results of a series of laboratory experiments that were conducted to simulate potential cryogenic carbonate formation on the planet Mars. These results indicate that carbonates grown under martian conditions (controlled atmospheric pressure and temperature) show enrichments from starting bicarbonate fluids in both carbon and oxygen isotopes beyond equilibrium values with average Delta (super 13) C (sub (DIC-CARB)) values of approximately 20.5ppm which exceed the expected equilibrium fractionation factor of [10 (super 3) ln alpha = approximately 13ppm] at 0 degrees C. Oxygen isotopes showed a smaller enrichment with Delta (super 18) O (sub (H2O-CARB)) values of approximately 35.5ppm, slightly exceeding the equilibrium fractionation factor of [10 (super 3) ln alpha = approximately 34ppm] at 0 degrees C. Large kinetic carbon isotope effects during carbonate precipitation could substantially affect the carbon isotope evolution of CO (sub 2) on Mars allowing for more efficient removal of (super 13) C from the Noachian atmosphere enriched by atmospheric loss. This mechanism would be consistent with the observations of large carbon isotope variations in martian materials despite the relative paucity of carbonate minerals in the martian crust. JF - American Geophysical Union Fall Meeting AU - Socki, R AU - Niles, P B AU - Sun, T AU - Fu, Q AU - Romanek, C S AU - Gibson, E K AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract V21A EP - 2702 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656036965?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Carbonate+mineral+formation+on+Mars%3B+clues+from+stable+isotope+variations+seen+in+cryogenic+laboratory+studies+of+carbonate+salts&rft.au=Socki%2C+R%3BNiles%2C+P+B%3BSun%2C+T%3BFu%2C+Q%3BRomanek%2C+C+S%3BGibson%2C+E+K%3BAnonymous&rft.aulast=Socki&rft.aufirst=R&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-02-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - Mars sulfur; a review of landed mission data AN - 1656036711; 2015-013000 AB - Sulfur (S) has been detected (1.0 - 36 wt. % SO (sub 3) ) in martian surface materials at the Viking, Pathfinder, Mars Exploration Rovers (MER), Phoenix, and Mars Science Laboratory (MSL) landing sites. The accumulation of S at these landing sites is attributed to the hyperarid martian climate that inhibits dissolution and leaching of surface S into the subsurface. The S cycle involving sources, sinks, and the processes involved in redistributing S after initial deposition are not well constrained. This work reviews the state of knowledge of S as derived from landed missions. Results suggest that aqueous processes have been involved in the S cycling suggesting that conditions may have been favorable microbiology. Chemical data and the apparent oxidizing condition of the soil suggest that the Viking and Pathfinder soils consist of Mg-sulfate and possible Fe-sulfate. Sulfur-rich soils (up to 36 wt. % SO (sub 3) ) in Gusev crater examined by MER Spirit consist of mixed Fe (super 3+) )-, Mg- , and Ca-sulfates. Meridiani Plenum explored by MER Opportunity is dominated by outcrops of mixed Fe-, Mg- and Ca-sulfate while rocks stratigraphically below this at Endeavor Crater contain veins composed of calcium sulfate. Soil solutions evaluated at the Phoenix Landing site were consistent with the presence of Mg-sulfate, while the thermal and evolved gas data collected from this site suggested that Ca-sulfate could also be present. X-ray diffraction analysis of the Rocknest sand shadow in Gale Crater detected anhydrite (CaSO (sub 4) )( approximately 1 wt.%) The source of S on the martian surface may be derived from S-bearing volcanic aerosols and/or from subsurface hydrothermal fluids that have interacted with sulfide minerals in the crust. For example, volcanic derived S aerosols in water or ice have been proposed to alter basaltic material where acidic fluids evaporated or ice sublimed leaving behind the large-scale Meridiani sulfate outcrops. On the other hand, local small-scale hydrothermal processes may be responsible for locally concentrated S in the Paso Robles soils in the Columbia Hills encountered by Spirit. Subsequent to deposition, redistribution of S by aqueous or eolian processes is possible. Physical erosion of S deposits detected elsewhere on Mars followed by eolian redistribution of S bearing dust could contribute to soil S. Downward water flow has been proposed to have leached sulfates in select Gusev soils and may be involved in sulfate redistribution in the Meridiani deposits. Sources of downward water flow could be caused by percolating snow melt that occurs during periods of high obliquity. Subsequent to deposition, groundwater interactions are also proposed as a mechanism for the redistributed the Meridiani sulfates. The evaluation of martian of the S cycle should shed light on the past martian climate and indicate the types of aqueous geochemical conditions that were encountered by potential microbiology. Aqueous processes involved the S cycle appear to span a wide pH range from acidic (Fe-sulfates) to more neutral (Fe-sulfate limiting). This range of pH suggests that martian microbiology, if ever present, was diverse and consisted of species that thrived in low pH solutions (e.g., acidophilles) along with species that thrived in more neutral pH solutions. JF - American Geophysical Union Fall Meeting AU - Sutter, B AU - Ming, D W AU - Niles, P B AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract V21A EP - 2699 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656036711?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+sulfur%3B+a+review+of+landed+mission+data&rft.au=Sutter%2C+B%3BMing%2C+D+W%3BNiles%2C+P+B%3BAnonymous&rft.aulast=Sutter&rft.aufirst=B&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-02-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - Observations and understanding of recent climate change AN - 1656036199; 2015-015065 AB - Observations of the atmosphere, land, ocean and ice from instrumental and paleoclimatic sources demonstrate that the Earth is warming. Models are able to simulate many elements of observed atmospheric, oceanic and cryospheric change over the past century, allowing us to distinguish human-induced from natural change. Ocean salinity measurements indicate that the contrast between fresh and salty regions over the oceans has increased over the past 60 years. Regions of high salinity where evaporation exceeds precipitation have become more saline, while salinity has decreased in regions where precipitation exceeds evaporation, which is consistent with the response of climate models to human-induced climate change. The summer minimum ice cover in the Arctic is declining rapidly. While simulations and observations show broadly consistent warming on multi-decadal timescales, the observed global-mean surface temperature has shown a much smaller warming trend over the past 15 years than over the past 30 to 60 years. The majority of CMIP5 model simulations show a temperature trend over 1998-2012 that is larger than the observed trend. This difference between simulated and observed trends could be caused by some combination of internal climate variability, missing or incorrect radiative forcing, and model response error. A challenge for the future will be to understand and quantify the causes of the decreased warming rate in the past 15 years and explore the implications for understanding climate variability and change on decadal and longer time scales. JF - American Geophysical Union Fall Meeting AU - Hartmann, D L AU - Comiso, J C AU - Gillett, N P AU - Marotzke, J AU - Masson-Delmotte, V AU - Rhein, M AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract U22A EP - 02 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656036199?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Observations+and+understanding+of+recent+climate+change&rft.au=Hartmann%2C+D+L%3BComiso%2C+J+C%3BGillett%2C+N+P%3BMarotzke%2C+J%3BMasson-Delmotte%2C+V%3BRhein%2C+M%3BAnonymous&rft.aulast=Hartmann&rft.aufirst=D&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-02-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - What are wetlands and where are they? Part 2, Why are wetland areas and methane emissions so different among wetland-methane models and data sets? AN - 1656035166; 2015-015022 AB - Natural wetlands are central to understanding current and future interactions between climate and carbon cycling. They are the world's largest source of methane (CH4) to the atmosphere and their distribution and emissions are sensitive to interannual and longer-term variations in climate. Field observations confirm heterogeneous responses of CH4 emissions to climate variations governed by interacting influences of vegetation, climate, and environmental characteristics that differ among wetland ecosystems. Therefore, improving models of wetland-CH4 emission requires characterizing methane-relevant information across the spectrum of wetland variability. Modeling wetland extent and type--inextricably entwined with predicting methane emissions--remains ad hoc such that improvements in both are needed to increase predictive capability especially under future climate. Wetland distributions from data sets, and simulated or prescribed in wetland-methane models, diverge widely in part because no consensus exists on what and where wetlands are, i.e., wetlands are an ill-defined modeling target. Simulated wetland-methane fluxes also vary widely in magnitude, seasonality and geography due in part to wetland definition but also because few of the approximately 800 published CH4 flux observations have been used to develop and verify the models. Finally, no approach exists to link methane fluxes of wetland ecosystems represented in the literature to the global distribution of those ecosystems. We diagnose underlying causes for differences in wetland areas and distributions in models and data sets, and quantify their impact on modeled methane emissions. We present initial results from a coordinated effort to codify and amplify methane-relevant wetland data and to link the large body of methane fluxes observed in wetland ecosystems to the global distribution of those ecosystems. JF - American Geophysical Union Fall Meeting AU - Matthews, Elaine AU - Bruhwiler, Lori AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract B44C EP - 07 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656035166?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=What+are+wetlands+and+where+are+they%3F+Part+2%2C+Why+are+wetland+areas+and+methane+emissions+so+different+among+wetland-methane+models+and+data+sets%3F&rft.au=Matthews%2C+Elaine%3BBruhwiler%2C+Lori%3BAnonymous&rft.aulast=Matthews&rft.aufirst=Elaine&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-02-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - The observed response of Ozone Monitoring Instrument (OMI) NO2 columns to NOx emission controls on power plants in the United States: 2005-2011 AN - 1647000612; 21279181 AB - We show that Aura Ozone Monitoring Instrument (OMI) nitrogen dioxide (NO2) tropospheric column data may be used to assess changes of the emissions of nitrogen oxides (NOx) from power plants in the United States, though careful interpretation of the data is necessary. There is a clear response for OMI NO2 data to NOx emission reductions from power plants associated with the implementation of mandated emission control devices (ECDs) over the OMI record (2005-2011). This response is scalar for all intents and purposes, whether the reduction is rapid or incremental over several years. However, it is variable among the power plants, even for those with the greatest absolute decrease in emissions. We document the primary causes of this variability, presenting case examples for specific power plants. JF - Atmospheric Environment AU - Duncan, Bryan N AU - Yoshida, Yasuko AU - de Foy, Benjamin AU - Lamsal, Lok N AU - Streets, David G AU - Lu, Zifeng AU - Pickering, Kenneth E AU - Krotkov, Nickolay A AD - Atmospheric Chemistry and Dynamics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA Y1 - 2013/12// PY - 2013 DA - Dec 2013 SP - 102 EP - 111 PB - Elsevier B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 81 SN - 1352-2310, 1352-2310 KW - Environment Abstracts KW - Ozone Monitoring Instrument KW - Nitrogen dioxide KW - Air quality KW - Space-based observations KW - Power plant emissions KW - Emission control devices KW - Pollution monitoring KW - USA KW - Photochemicals KW - Power plants KW - Emissions KW - Troposphere KW - Emission control KW - Nitrogen oxides KW - Monitoring instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1647000612?accountid=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=Atmospheric+Environment&rft.atitle=The+observed+response+of+Ozone+Monitoring+Instrument+%28OMI%29+NO2+columns+to+NOx+emission+controls+on+power+plants+in+the+United+States%3A+2005-2011&rft.au=Duncan%2C+Bryan+N%3BYoshida%2C+Yasuko%3Bde+Foy%2C+Benjamin%3BLamsal%2C+Lok+N%3BStreets%2C+David+G%3BLu%2C+Zifeng%3BPickering%2C+Kenneth+E%3BKrotkov%2C+Nickolay+A&rft.aulast=Duncan&rft.aufirst=Bryan&rft.date=2013-12-01&rft.volume=81&rft.issue=&rft.spage=102&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Environment&rft.issn=13522310&rft_id=info:doi/10.1016%2Fj.atmosenv.2013.08.068 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-01-01 N1 - Number of references - 25 N1 - Last updated - 2015-02-12 N1 - SubjectsTermNotLitGenreText - Nitrogen dioxide; Pollution monitoring; Photochemicals; Emissions; Power plants; Troposphere; Emission control; Nitrogen oxides; Monitoring instruments; USA DO - http://dx.doi.org/10.1016/j.atmosenv.2013.08.068 ER - TY - JOUR T1 - Predicting the movement of pumice rafts in the South Pacific using GNOME for enhanced navigational warnings and coastal hazard management policies AN - 1645572290; 2015-006427 AB - Pumice rafts formed from explosive shallow submarine eruptions in the South Pacific pose a significant hazard to local maritime transportation and global coastal communities. Local concerns include the possibility of individual pumice clasts blocking seawater intake valves of ships, damaging the hull of smaller vessels, and inundating harbors bringing fishing and transport to a standstill. Additionally, pumice rafts can introduce harmful invasive species to delicate coastal communities around the world as they dramatically increase dispersal distances for otherwise benthic or relatively sedentary organisms. Two volcanoes in this region have recently formed pumice rafts: Home Reef volcano (Tonga) in 2006 and Havre Seamount (Kermadec Islands) in 2012. These raft events were used as case studies to test a trajectory prediction model since they occurred during times at which high spatial and temporal resolution satellite data were being collected and/or have been described in peer reviewed literature, both of which were necessary for providing model validation. The model was created using the General NOAA Observational Modeling Environment (GNOME), which utilizes sea surface winds and sea surface height (SSH) datasets to predict the possible trajectory a pollutant might follow on a body of water. Wind and ocean current data were acquired from the SeaWinds and Poseidon-3 sensors on board the NASA Earth Observing System (EOS) satellites QuikSCAT and Jason-2. Model outputs showed the 2012 Havre Seamount raft rapidly disperse as it drifted in an ENE direction and the 2006 Home Reef raft drifted quickly in a NW direction towards Papua New Guinea. The 2006 Home Reef prediction model was validated by comparing it to another published model that was based on an integrated surface velocity field in addition to in situ observations. The 2012 Havre Seamount prediction model was validated by spatially and temporally correlating the GNOME trajectory output with moderate-resolution MODIS multispectral data acquired from EOS satellites Aqua and Terra since the raft event has scarcely been studied. Pumice rafts in their early stages are easily observed in MODIS 250 m imagery but after approximately 5 weeks of exposure to wind shear while drifting, the rafts thinned to <1 km and became extremely difficult to see. Utilization of a higher spatial resolution sensor such as the Operational Land Imager on board LandSat 8 is necessary for imaging and tracking pumice rafts beyond this timeframe, although a significant decrease in temporal resolution is realized. This novel and easily adaptable methodology can be used by island nations and fishery managers to forecast when and where a pumice raft will be, drastically enhancing maritime navigational warnings and response times to eventual pumice landfall. JF - American Geophysical Union Fall Meeting AU - Kelly, J AU - Bender, M AU - Kelly, M AU - Walters, C AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract V41D EP - 2825 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1645572290?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Predicting+the+movement+of+pumice+rafts+in+the+South+Pacific+using+GNOME+for+enhanced+navigational+warnings+and+coastal+hazard+management+policies&rft.au=Kelly%2C+J%3BBender%2C+M%3BKelly%2C+M%3BWalters%2C+C%3BAnonymous&rft.aulast=Kelly&rft.aufirst=J&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-01-15 N1 - CODEN - #07548 ER - TY - JOUR T1 - Peroxy defects in rocks and H2O2 formation on the early Earth AN - 1645571971; 2015-006237 AB - An oxygen-rich atmosphere appears to have been a prerequisite for complex life to evolve on Earth and possibly elsewhere in the Universe. The question is still shrouded in uncertainty how free oxygen became available on the early Earth. Here we study processes of peroxy defects in silicate minerals which, upon weathering, generate mobilized electronic charge carriers resulting in oxygen formation in an initially anoxic subsurface environment. Reactive Oxygen Species (ROS) are precursors to molecular oxygen during this process. Due to their toxicity they may have strongly influenced the evolution of life. ROS are generated during hydrolysis of peroxy defects, which consist of pairs of oxygen anions. A second pathway for formation occurs during (bio) transformations of iron sulphide minerals. ROS are produced and consumed by intracellular and extracellular reactions of Fe, Mn, C, N, and S species. We propose that despite an overall reducing or neutral oxidation state of the macroenvironment and the absence of free O2 in the atmosphere, microorganisms on the early Earth had to cope with ROS in their microenvironments. They were thus under evolutionary pressure to develop enzymatic and other defenses against the potentially dangerous, even lethal effects of ROS and oxygen. We have investigated how oxygen might be released through weathering and test microorganisms in contact with rock surfaces. Our results show how early Life might have adapted to oxygen. Early microorganisms must have "trained" to detoxify ROS prior to the evolution of aerobic metabolism and oxygenic photosynthesis. A possible way out of this dilemma comes from a study of igneous and high-grade metamorphic rocks, whose minerals contain a small but significant fraction of oxygen anions in the valence state 1-, forming peroxy links of the type O3Si-OO-SiO3. As water hydrolyzes the peroxy links hydrogen peroxide, H2O2, forms. Continued experimental discovery of H2O2 formation at rock-water interfaces as part of stress-activated currents on the tectonically active Earth may help us better understand the oxidation of the early Earth and the evolution of early Life. JF - American Geophysical Union Fall Meeting AU - Gray, A AU - Balk, M AU - Mason, P AU - Freund, Friedemann T AU - Rothschild, Lynn J AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract V33D EP - 2781 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1645571971?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Peroxy+defects+in+rocks+and+H2O2+formation+on+the+early+Earth&rft.au=Gray%2C+A%3BBalk%2C+M%3BMason%2C+P%3BFreund%2C+Friedemann+T%3BRothschild%2C+Lynn+J%3BAnonymous&rft.aulast=Gray&rft.aufirst=A&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-01-15 N1 - CODEN - #07548 ER - TY - JOUR T1 - A new simulation approach for modeling inflated pahoehoe lava flows AN - 1645571895; 2015-006039 AB - Pahoehoe lavas are recognized as an important landform on Earth, Mars and Io. Observations of such flows on Earth indicate that when flow rates are very low and emplacement occurs on very low slopes, the process is dominated by random effects. Existing models for lobate a'a lava flows that assume viscous fluid flow on an inclined plane are not appropriate for dealing with the numerous random factors present in pahoehoe emplacement. We present a new model that incorporates a simulation approach to quantifying the influence of random and ambient factors on the evolving three-dimensional shape and morphology of pahoehoe lobes. To simulate pahoehoe lava emplacement, we consider the movement of small parcels of lava with a volume equal to the size of a typical toe (70 X 70 X 20 cm (super 3) ). The model develops a set of probabilistic rules for determining the location and direction of movement for each parcel. Unlike the classical random walk of Brownian motion, many parcels may remain dormant, but fluid, for multiple time steps. The net effect of this approach is that parcels tend to accumulate preferentially within the lobe producing cross-sectional topographic profiles with a medial ridge. The randomness of parcel volume transfers within the lobe interior as well as at the margins qualitatively reflects inflation processes observed in the field. This new model predicts that greater than 75% of pahoehoe lobe volume is contributed through inflation for typical lobes. The influences on planform shape and topographic cross-sectional profiles of total volume, source area and shape, topographic confinement, and sequential breakouts at the lobe margins, have been explored with the stochastic model. The model provides a means for assessing the relative importance of these processes through comparisons with field data. A major conclusion of this work is that sequential breakouts at the lobe margins are an important process controlling the final topographic distribution of observed pahoehoe lobes. Future activities include tracking the ages of parcels exposed at the surface and estimation of surface temperature distributions during emplacement. Future enhancements of the model will also include the incorporation of systematic effects such as underlying slope, the investigation of a range of stochastic rules to reflect different emplacement conditions, and transitions from continuum flow. Results to date indicate that a great deal of information about the emplacement of inflating pahoehoe lobes can be extracted by stochastic modeling of the random effects. JF - American Geophysical Union Fall Meeting AU - Baloga, S M AU - Glaze, L S AU - Hamilton, C AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract V13E EP - 2653 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1645571895?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+new+simulation+approach+for+modeling+inflated+pahoehoe+lava+flows&rft.au=Baloga%2C+S+M%3BGlaze%2C+L+S%3BHamilton%2C+C%3BAnonymous&rft.aulast=Baloga&rft.aufirst=S&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-01-15 N1 - CODEN - #07548 ER - TY - JOUR T1 - Waiting ages for atmospheric oxygen; a titration hourglass and the oxidation of the solid Earth AN - 1645571664; 2015-006447 AB - Atmospheric O2 increased from less than 1 ppm to 0.2-2% at 2.45-2.22 Ga in the Great Oxidation Event (GOE). A minority opinion is that the GOE happened close to the time when oxygenic photosynthesis originated but evidence from the concentration of redox-sensitive elements in shales and their isotopes, as well as the setting and morphology of stromatolites supports the consensus view that oxygenic photosynthesis had originated by 2.8-2.7 Ga. Models show that O2 can be consumed rapidly by reductants in the Archean so that the air can remain anoxic even after photosynthesis began pumping out O2. Why did the world ultimately shift away from this balance? What conditions were needed to oxygenate the atmosphere in addition to oxygenic photosynthesis? A general principle is that a shift to an oxic environment from a reducing one requires net export of reductant. In planetary science, for example, the oxidation of the surfaces and atmospheres of other planets or satellites is universally attributed to the escape of hydrogen to space. Hydrogen escape explains the redness of Mars, several characteristics of the atmosphere of Venus, and the presence of tenuous O2 atmospheres on Ganymede, Europa, Rhea and Dione. For the Earth's rise of oxygen, many ideas focus on a decline in mantle or seafloor reductant fluxes (driven by internal geologic evolution) to the point where these fluxes were surpassed by biogenic oxygen fluxes. But for such a shift (without a role for hydrogen escape), the surface still has to export net reductant to the mantle. Such net export depends on the ratio of subducted ferric iron versus reduced carbon during the Archean, which remains poorly constrained. Over a decade ago, we proposed that rapid escape of hydrogen to space from the pre-GOE atmosphere would have gradually oxidized the Earth's surface and crust, accompanied by falling levels of atmospheric CH4. The idea is that Earth underwent a redox titration. A point would be reached where O2 became more stable than competing reducing gases, such as CH4 and H2. In this scheme, the delay in the rise of oxygen by several hundred million years is the time it takes to oxidize the outer portions of the solid Earth to the point when the atmosphere flipped redox state. We also speculate that hydrogen escape may be associated with continental growth. As the Archean continents grew, they would have accumulated excess oxygen in their minerals at the tempo of hydrogen escape. The ferric oxide concentration in average continents is an order of magnitude greater than in the mantle. Continental growth supplied reducing power to the surface environment that became intertwined with the carbon cycle and photosynthesis. Thus, "granitoid" material may be a consequence of increased oxygen fugacity in weathered subducted materials (cf. ref. 2). If so, continents are, in part, a response to surface oxidation rather than vice versa. Moreover, continental growth would necessarily slow once hydrogen escape rates were throttled by the GOE. JF - American Geophysical Union Fall Meeting AU - Catling, D C AU - Claire, M AU - Zahnle, K J AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract V41E EP - 02 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1645571664?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Waiting+ages+for+atmospheric+oxygen%3B+a+titration+hourglass+and+the+oxidation+of+the+solid+Earth&rft.au=Catling%2C+D+C%3BClaire%2C+M%3BZahnle%2C+K+J%3BAnonymous&rft.aulast=Catling&rft.aufirst=D&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-01-15 N1 - CODEN - #07548 ER - TY - JOUR T1 - Preliminary assessment of the state of CO (sub 2) soil degassing on the flanks of Gede Volcano (West Java, Indonesia) AN - 1645571215; 2015-006489 AB - Gede Volcano (West Java) is part of an andesitic stratovolcano complex consisting of Pangrango in the north-west and Gede in the south-east. The last recorded eruptive activity was a phreatic subvolcanian ash eruption in 1957. Current activity is characterized by episodic swarms at 2-4 km depth, and low-temperature ( approximately 160 degrees C) crater degassing in two distinct summit crater fumarolic areas. Hot springs occur in the saddle between the Gede and Pangrango edifice, as well as on the NE flank base. The most recent eruptive events produced pyroclastic material, their flow deposits concentrate toward the NE. A collaborative effort between the Center for Volcanology and Geological Hazard Mitigation (CVGHM), Geological Agency and the Earth Observatory of Singapore (EOS) is since 2010 aimed at upgrading the geophysical and geochemical monitoring network at Gede Volcano. To support the monitoring instrumentation upgrades under way, surveys of soil CO (sub 2) degassing have been performed on the flanks of Gede, in circular and radial traverses. The goal was to establish a spatial distribution of flank CO (sub 2) fluxes, and to allow smart siting for continuous gas monitoring stations. Crater fluxes were not surveyed, as its low-temperature hydrothermal system is likely prone to large hydraulic changes in this tropical environment, resulting in variable permeability effects that might mask signals from deeper reservoir or conduit degassing. The high precipitation intensity in the mountains of tropical Java pose challenges to this method, since soil gas permeability is largely controlled by soil moisture content. Simultaneous soil moisture measurements were undertaken. The soil CO (sub 2) surveys were carried out using a LI-8100A campaign flux chamber instrument (LICOR Biosciences, Lincoln, Nebraska). This instrument has a very precise and highly stable sensor and an atmospheric pressure equilibrator, making it highly sensitive to low fluxes. It is the far superior choice for higher precision low-flux flank surveys in tropical environments. The mean flank fluxes measured were 19.8 g/m (super 2) /day in 2011, 11.7 g/m (super 2) /day in 2012 and 7.6 g/m (super 2) /day in early 2013. The mean flank flux for all the surveys is 17.9 g/m (super 2) /day. Statistical analysis of the data set reveals at least three distinct flux populations. Results from 2011, 2012 and 2013 indicate that flank fluxes were as high as 112.5 g/m (super 2) /day, suggesting recent intrusive activity. The spatial distribution of fluxes indicates a strong focus on the NE sector. This finding appears concurrent with an area previously documented as continuously subsiding and filled with recent pyroclastic deposits (Philiboisan et al.2011, G3 Vol.12(11), Fig. 15). The surveys also permit selection and validation of sites for continuous CO (sub 2) monitoring stations, representing medium and low flank flux populations. JF - American Geophysical Union Fall Meeting AU - Kunrat, S L AU - Schwandner, F M AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract V43B EP - 2877 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1645571215?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+assessment+of+the+state+of+CO+%28sub+2%29+soil+degassing+on+the+flanks+of+Gede+Volcano+%28West+Java%2C+Indonesia%29&rft.au=Kunrat%2C+S+L%3BSchwandner%2C+F+M%3BAnonymous&rft.aulast=Kunrat&rft.aufirst=S&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-01-15 N1 - CODEN - #07548 ER - TY - JOUR T1 - Stages of rootless cone formation observed within the Raudholar cone group, Iceland AN - 1645571157; 2015-006439 AB - Secondary (rootless) cones form when lava interacts explosively with water contained in the substrate, and represent a largely degassed, end-member system that can elucidate mechanisms of magma-water interactions in the absence of primary degassing-induced fragmentation. Rootless cones are well documented in Iceland. The Raudholar rootless cone group, located within the approximately 5200-year-old Ellidaa lava flow on the south-eastern outskirts of Reykjavik, was extensively quarried during the Second World War and now provides excellent cross-sections through the tephra sequences. Taking advantage of this exposure, we performed detailed stratigraphic, grain-size, and componentry analyses, which suggest that the energetics of rootless explosions vary substantially during cone formation. The lower unit contains the most substrate sediment and is characterized by dilute pyroclastic density current deposits. The middle unit is dominated by a succession of bed-pairs, each containing a finer-grained lower layer and coarser-grained upper layer. In the upper unit, the succession grades into a welded section that caps the cone. The abundance of substrate sediment generally decreases upwards within the cone, which suggests that the efficiency of lava-substrate mixing decreased with time. In addition, clast size generally increases upwards within the cone, implying that the fragmentation energy also decreased as the rootless eruption progressed. Both lines of evidence suggest that the explosions decreased in intensity with time, likely due to the depletion of available groundwater. However, alternating fine- and coarse-grained beds imply cycles of increased and decreased fragmentation efficiency, which we attribute to groundwater recharge and depletion during the event. Therefore, this study presents a detailed look at rootless cone formation and provides the foundation for future work on this important, yet understudied, system. JF - American Geophysical Union Fall Meeting AU - Fitch, E P AU - Hamilton, Christopher AU - Fagents, S A AU - Thordarson, T AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract V41D EP - 2838 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1645571157?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Stages+of+rootless+cone+formation+observed+within+the+Raudholar+cone+group%2C+Iceland&rft.au=Fitch%2C+E+P%3BHamilton%2C+Christopher%3BFagents%2C+S+A%3BThordarson%2C+T%3BAnonymous&rft.aulast=Fitch&rft.aufirst=E&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-01-15 N1 - CODEN - #07548 ER - TY - JOUR T1 - The bombardment of the Earth during the Hadean and early Archean eras AN - 1645570425; 2015-006113 AB - Our knowledge of the Earth during the Hadean and early Archean eons (ca 4.5-3.5 Ga) is very limited, mainly because few rocks older than 3.8 Ga have been found (e.g. Harrison 2009). Hadean-era zircons have allowed us to glean important insights into this era, but their data has led to considerably different evolution models for the evolution of the early Earth; some predict a hellish world dominated by a molten surface with a sporadic steam atmosphere (e.g. Pollack 1997), while others have predicted a tranquil, cool surface with stable oceans (e.g. Wilde et al 2001; Valley et al 2002). To understand whether either model (or both) could be right, we believe it is useful to quantitatively examine the post Moon-forming impact bombardment of the early Earth. Over the last several years, through a combination of observations (e.g., Marchi et al 2012), theoretical models (e.g., Bottke et al 2012), and geochemical constraints from lunar rock (e.g. highly siderophile elements -- HSE -- abundances delivered to the Moon by impactors; the global number of lunar basins; the record of Archean-era impact spherule beds on Earth; Walker 2009; Neumann et al 2012), we have constructed a calibrated model of the early lunar impactor flux (Morbidelli et al 2012). Our results have now been extrapolated to the Earth, where they can make predictions about its early bombardment. Using a Monte Carlo code to account for the stochastic nature of major impacts, and constraining our results by the estimated HSE abundances of Earth's mantle (that were presumably delivered by impactors; Walker 2009; Bottke et al. 2010), we find the following trends. In the first approximately 100-200 Myr after the formation of the Moon, which we assume was created approximately 4.5 Ga, the Earth was almost entirely resurfaced by impacts. This bombardment, which included numerous D>1000 km diameter impactors, should have vigorously mixed the crust and upper mantle. Between approximately 4.1-4.3 Ga, the impactor flux steadily decreased; though an uptick near approximately 4.1 Ga caused by the so-called Late Heavy Bombardment should have delivered a new round of large impactors striking at a mean velocity approximately 1.5 times higher than in previous epochs. Overall, only a relatively small fraction of ancient terrain survives unscathed all the way to the early Archean. We speculate that if impacts are involved with Hadean zircon formation, a scenario we find plausible, the apparent preference for approximately 4.1 Ga ages among Hadean zircons may be a combination of (i) terrain (and zircon) preservation and (ii) the ability of large impactors to create zircons (i.e., approximately 4.1 Ga would potentially be the "sweet spot" in this competition). The relevance of this model for other early Earth issues (e.g., accretion of volatile elements; Kring 2003) will also be discussed. JF - American Geophysical Union Fall Meeting AU - Marchi, S AU - Bottke, W F AU - Elkins-Tanton, L T AU - Morbidelli, A AU - Wuennemann, Kai AU - Kring, D A AU - Bierhaus, Michael AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract V31E EP - 01 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1645570425?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+bombardment+of+the+Earth+during+the+Hadean+and+early+Archean+eras&rft.au=Marchi%2C+S%3BBottke%2C+W+F%3BElkins-Tanton%2C+L+T%3BMorbidelli%2C+A%3BWuennemann%2C+Kai%3BKring%2C+D+A%3BBierhaus%2C+Michael%3BAnonymous&rft.aulast=Marchi&rft.aufirst=S&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-01-15 N1 - CODEN - #07548 ER - TY - JOUR T1 - Near-vent measurements of volcanic gases and aerosols with multiple small unmanned aerial vehicles AN - 1645570271; 2015-006495 AB - Dynamic phenomena occurring on the earth's surface and in the atmosphere are almost always distributed over a volume or area that changes progressively over time (e.g., explosive eruption plumes, lava flows, floods, toxic materials releases, wildfires). "Snapshot" views of such phenomena traditionally capture a small part of the area or volume of the event in successive time slices. Such time series are fundamentally limited in providing accurate boundary conditions for models of such processes, or even to create descriptions or observations at spatial scales relevant to the characteristic dimensions of the process. High spatial resolution (e.g., approximately 1-3 m/pixel) imaging views of such spatially extended phenomena that capture the entire extent of the event are not usually possible with a single low altitude aircraft, for instance. Synoptic satellite and high altitude airborne views are often at spatial resolutions that an order of magnitude coarser. Airborne in situ sampling faces a similar problem in that point measurements are acquired along a flight line in a time-series. Source conditions changing at timescales shorter than an airborne sortie interval (typical for most dynamic phenomena) render such flight line observations incomplete. The ability to capture hi-spatial resolution, synchronous, full volume or area data over dynamically evolving (possibly hazardous) features (e.g., volcanic plumes, air pollution layers, oil slicks, wildfires) requires a distributed 2D or 3D mesh of observation platforms. Small (e.g., <25 kg) unmanned aerial vehicles (UAVs) are an emerging technology that can provide distributed formations or networks of observation platforms that can be dynamically reconfigured to encompass areas or volumes of interest for imaging or other kinds of in situ observations (e.g., SO2 or CO2 sampling of volcanic gas emissions). Such data are crucial for the calibration and validation of remotely sensed concentration retrievals (e.g., from multi/hyperspectral imaging platforms) or for transport modeling based on data from such platforms. For instance, for volcanic plumes, in situ cal/val data are rare to non-existent. Nevertheless, such data were in high demand during the airborne volcanic ash crisis that shut down European airspace for weeks at a time after the early 2010 eruption of Eyjafjallajokull Volcano in Iceland. Particularly for low altitude applications, small UAVs, such as the Aerovironment-built Dragon Eye ( approximately 2.5 kg gross weight) or its equivalent, with small payloads (e.g., 0.5-1 kg), can be economically deployed in formations or "swarms" to provide simultaneous multiple observations over an areally or volumetrically distributed temporally evolving feature, such as a lava flow or a volcanic plume. We discuss our recent experiences and challenges in the use of such small platforms, the challenges in providing low mass sensors for such aircraft, and future applications for self-organizing airborne sensor networks. This work was carried out, in part, under contract to NASA at the Jet Propulsion Laboratory of the California Institute of Technology. JF - American Geophysical Union Fall Meeting AU - Pieri, David C AU - Diaz, Jorge Andre AU - Bland, Geoff AU - Fladeland, Matthew M AU - Schumann, Johann M AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract V43B EP - 2883 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1645570271?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+measurements+of+volcanic+gases+and+aerosols+with+multiple+small+unmanned+aerial+vehicles&rft.au=Pieri%2C+David+C%3BDiaz%2C+Jorge+Andre%3BBland%2C+Geoff%3BFladeland%2C+Matthew+M%3BSchumann%2C+Johann+M%3BAnonymous&rft.aulast=Pieri&rft.aufirst=David&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-01-15 N1 - CODEN - #07548 ER - TY - JOUR T1 - Reconstruction of the late Holocene climate in the Minusink Hollow, south-central Siberia, and its potential influence on settled farming versus nomadic cattle herding AN - 1623280023; 2014-088765 AB - Introduction. Prehistoric and early historic human cultures are known to be closely connected to and dependent on their natural environments. Gumilev (2000) developed a theory relating the rise, development and fall of human cultures (ethnos) to the changing environment. This theory improved our understanding of human history as the natural interactions the biosphere and sociosphere. We test the hypothesis that climate change altered the means of subsistence of ancient tribes and forced them to choose agricultural or cattle herding economic strategies. Our study area is the Khakass-Minusinsk Hollow located at the foothills of the Sayan Mountains, south-central Siberia, which was, for a few millennia, a buffer zone for human migrations across the Great Eurasian Steppe. Methods. Three different methods (the Montane Bioclimatic Model; the biomization method; and the actualizm method) were employed to reconstruct vegetation from the fossil pollen of sediment cores of two mountain lakes in the study area at eleven time slices relating to successive human cultures back to the midHolocene. Our bioclimatic model was used inversely to convert site paleovegetation into site paleoclimates. Climate-based regression models were developed and applied to reconstructed climates to evaluate possible pasture and grain crops for these time slices. Results. Our pollen-based reconstructions of the climate fluctuations uncovered several dry periods with steppe and forest-steppe lands dominating up to 85% of the area and four wetter periods with forests dominating up to 60% of the area since 6000 BP. Grasslands increased one order of magnitude during the dry periods and provided extensive open space likely suitable for pastoralism; however, both grain and pasture yields dropped during these dry periods. During wetter climates, both grain and pasture yields could increase twofold and support more fixed human settlements centered around farming and herding cattle. Thus, the dry periods favored pastoralist rather than farming activities. On the other hand, tribes that practiced agriculture got some advantage in wet periods. JF - American Geophysical Union Fall Meeting AU - Tchebakova, N M AU - Blyakharchuk, T AU - Parfenova, E I AU - Soja, A J AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract GC21D EP - 0875 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1623280023?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Reconstruction+of+the+late+Holocene+climate+in+the+Minusink+Hollow%2C+south-central+Siberia%2C+and+its+potential+influence+on+settled+farming+versus+nomadic+cattle+herding&rft.au=Tchebakova%2C+N+M%3BBlyakharchuk%2C+T%3BParfenova%2C+E+I%3BSoja%2C+A+J%3BAnonymous&rft.aulast=Tchebakova&rft.aufirst=N&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2014-01-01 N1 - PubXState - DC N1 - Last updated - 2014-11-13 N1 - CODEN - #07548 ER - TY - JOUR T1 - Modeling dynamic thickening in East Antarctica as observed from ICESat AN - 1618131182; 2014-084473 AB - Mass changes of the Antarctic ice sheet derived from ICESat laser altimetry show that during 2003-2008 mass gains from snow accumulation exceeded losses from ice discharge by 73 Gt yr-1 (0.20 mm yr-1 sea level depletion). Results from ERS radar altimetry give a similar net gain of 120 Gt yr-1 for 1992-2001. In East Antarctica and four West Antarctic drainage systems, most of the net mass gain is caused by persistent dynamic thickening (excess of long-term accumulation relative to ice flow) at a rate of 207 Gt yr-1, and not by contemporaneous increases in snowfall. To investigate the dynamic thickening rate, we apply a 3D ice-sheet model to Antarctic ice sheet for the sensitivity experiments with climate change. The model results indicate that the East Antarctica ice sheet has been growing due to increased snowfall after the last ice age. The modeled thickening rate near Vostok is 2.5 cm/a for the present time, which is consistent with the observations from ICESat and ERS data. Overall, the model and observations indicate a long-term mass gain for East Antarctica and the interior of West Antarctic that has been offsetting dynamic losses, which have increased in the Antarctic Peninsula and West Antarctica during the last two decades. JF - American Geophysical Union Fall Meeting AU - Wang, W AU - Zwally, H AU - Li, J AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract C53B EP - 0571 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1618131182?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+dynamic+thickening+in+East+Antarctica+as+observed+from+ICESat&rft.au=Wang%2C+W%3BZwally%2C+H%3BLi%2C+J%3BAnonymous&rft.aulast=Wang&rft.aufirst=W&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2014-01-01 N1 - PubXState - DC N1 - Last updated - 2014-10-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - The Greenland ice sheet perennial firn aquifer; characteristics, extent and evolution obtained from airborne remote sensing AN - 1566815303; 2014-076216 AB - The presence of a perennial firn aquifer (PFA) was identified April 2011, in the southeast part of the Greenland ice sheet, from firn-core drilling, surface- and airborne-radar. The PFA is a component of the ice sheet hydrology and corresponds to a liquid water saturated firn aquifer, which persists over the winter without freezing. The average depth of the top of the aquifer is approximately 20 m below the surface, and is guided by surface topography, following surface undulations, similar to an unconfined aquifer observed in other groundwater aquifer systems. We use a combination of 400 MHz ground-based radar and the 600 to 900 MHz Accumulation Radar on board NASA's airborne Operation IceBridge (OIB) to identify and map PFA extent and evolution between 2011 and 2013. Here, we present an ice-sheet wide mapping of the PFA, including the 2013 field campaign with detailed ground-based radar grids near the firn core site drilled in April 2013 (PFA-13, 66.18 degrees N, 39.04 degrees W and 1563 m). At the PFA-13 location, OIB Accumulation Radar and ground-based radar data were acquired along the same track within two weeks in both 2011 and 2013, offering a unique comparison dataset. This dataset is used to analyze the three year (2011-2013) evolution of PFA top depth, i.e. stored meltwater volume, in areas where radar transects are repeated from one year to the next. This evolution suggests possible horizontal flow of this stored meltwater toward the ice-sheet margins but must be confirmed by further field investigations. In addition, we derive surface slope from latest digital elevation model available for Southeast Greenland and use this slope as parameter to interpolate the PFA top in the area between ground radar transects and airborne radar flight lines. This slope interpolation would aim to improve PFA water volume/extent estimations for areas without airborne radar coverage. The fate of this stored meltwater is currently unknown, even if flow is suggested and drainage into nearby crevasses seems likely from visible imagery evidences. At more than two locations, presence of crevasses coincides with PFA absence based on the airborne radar profiles, but more work is required to test this hypothesis. Understanding the PFA is important because of its possible sea level rise contribution and its implication in the ice sheet hydrologic system and mass balance estimates. JF - American Geophysical Union Fall Meeting AU - Miege, C AU - Forster, R R AU - Koenig, L AU - Brucker, L AU - Box, J E AU - Burgess, E W AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract C51A EP - 0501 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1566815303?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+Greenland+ice+sheet+perennial+firn+aquifer%3B+characteristics%2C+extent+and+evolution+obtained+from+airborne+remote+sensing&rft.au=Miege%2C+C%3BForster%2C+R+R%3BKoenig%2C+L%3BBrucker%2C+L%3BBox%2C+J+E%3BBurgess%2C+E+W%3BAnonymous&rft.aulast=Miege&rft.aufirst=C&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2014-01-01 N1 - PubXState - DC N1 - Last updated - 2014-10-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - NASA's Operation IceBridge; using instrumented aircraft to bridge the observational gap between ICESat and ICESat-2 laser altimeter measurements AN - 1566815296; 2014-076218 AB - NASA's Operation IceBridge images Earth's polar ice in unprecedented detail to better understand processes that connect the polar regions with the global climate system. Operation IceBridge utilizes a highly specialized fleet of research aircraft and the most sophisticated suite of innovative science instruments ever assembled to characterize annual changes in thickness of sea ice, glaciers, and ice sheets. In addition, Operation IceBridge collects critical data used to predict the response of Earth's polar ice to climate change and resulting sea-level rise. IceBridge also helps bridge the gap in polar observations between NASA's ICESat satellite missions. Combined with previous aircraft observations, as well as ICESat, CryoSat-2 and the forthcoming ICESat-2 observations, Operation IceBridge will produce a cross-calibrated 17-year time series of ice sheet and sea-ice elevation data over Antarctica, as well as a 27-year time series over Greenland. These time series will be a critical resource for predictive models of sea ice and ice sheet behavior. In addition to laser altimetry, Operation IceBridge is using a comprehensive suite of instruments to produce a three-dimensional view of the Arctic and Antarctic ice sheets, ice shelves and the sea ice. The suite includes two NASA laser altimeters, the Airborne Topographic Mapper (ATM) and the Land, Vegetation and Ice Sensor (LVIS); four radar systems from the University of Kansas' Center for Remote Sensing of Ice Sheets (CReSIS), a Ku-band radar altimeter, accumulation radar, snow radar and the Multichannel Coherent Radar Depth Sounder (MCoRDS); a Sander Geophysics airborne gravimeter (AIRGrav), a magnetometer and a high-resolution stereographic camera (DMS). Since its start in 2009, Operation IceBridge has deployed 8 geophysical survey aircraft and 19 science instruments. All IceBridge data is freely available from NSIDC (http://nsidc.org/data/icebridge) 6 months after completion of a campaign. JF - American Geophysical Union Fall Meeting AU - Studinger, M AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract C51A EP - 0503 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1566815296?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=NASA%27s+Operation+IceBridge%3B+using+instrumented+aircraft+to+bridge+the+observational+gap+between+ICESat+and+ICESat-2+laser+altimeter+measurements&rft.au=Studinger%2C+M%3BAnonymous&rft.aulast=Studinger&rft.aufirst=M&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2014-01-01 N1 - PubXState - DC N1 - Last updated - 2014-10-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - Frontal ablation and temporal variations in surface velocity of Livingston Island and King George Island ice caps, Antarctica AN - 1566815209; 2014-076155 AB - Frontal ablation (i.e. the sum of calving and submarine melting) from glaciers and ice caps covering the islands off the western coast of the Antarctic Peninsula is poorly known. Here we approximate the frontal ablation by the ice discharge through pre-defined flux gates, for the ice caps of King George and Livingston islands, the two largest islands in the South Shetland Islands archipelago. Glacier ice thickness is derived using a model based on principles of glacier dynamics. The model relies on the glacier surface velocities and glacier surface geometry, and is calibrated against ground-penetrating radar (GPR) measurements of ice thickness where available. The glacier surface velocities are obtained from intensity offset tracking of ALOS PALSAR-1 imagery from multiple tracks for both islands ensuring complete coverage of the ice caps. A total of 61 SAR images acquired between 2008 and 2011 were analyzed, providing surface velocities of up to 250 m a-1. The total frontal ablation for King George Island is found to be 720+ or -428 Mt a-1, while around 509+ or -381 Mt a-1 for Livingston Island. King George and Livingston ice caps cover areas of 1127 km2 and 697 km2, respectively. Dividing the measured ice discharge by the entire ice cap area provides specific balances of 0.6+ or -0.4 m water equivalent (w.e.) a-1 for King George and 0.7+ or -0.5 m w.e. a-1 for Livingston ice caps. For the Livingston ice cap, we also find large changes in frontal ablation rate (of approximately 237 Mt a-1) due to temporal variability in surface velocities. This highlights the importance of taking into account the seasonality in ice velocities when computing frontal ablation with a flux-gate approach. JF - American Geophysical Union Fall Meeting AU - Osmanoglu, B AU - Navarro, F J AU - de Corcuera, M AU - Braun, M AU - Hock, R AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract C42A EP - 07 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1566815209?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Frontal+ablation+and+temporal+variations+in+surface+velocity+of+Livingston+Island+and+King+George+Island+ice+caps%2C+Antarctica&rft.au=Osmanoglu%2C+B%3BNavarro%2C+F+J%3Bde+Corcuera%2C+M%3BBraun%2C+M%3BHock%2C+R%3BAnonymous&rft.aulast=Osmanoglu&rft.aufirst=B&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2014-01-01 N1 - PubXState - DC N1 - Last updated - 2014-10-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - Water volume estimates of the Greenland perennial firn aquifer from in situ measurements AN - 1566815059; 2014-076194 AB - Improving our understanding of the complex Greenland hydrologic system is necessary for assessing change across the Greenland Ice Sheet and its contribution to sea level rise (SLR). A new component of the Greenland hydrologic system, a Perennial Firn Aquifer (PFA), was recently discovered in April 2011. The PFA represents a large storage of liquid water within the Greenland Ice Sheet with an area of 70,000 + or - 10,000 km2 simulated by the RACMO2/GR regional climate model which closely follows airborne radar-derived mapping (Forster et al., in press). The average top surface depth of the PFA as detected by radar is 23 m. In April 2013, our team drilled through the PFA for the first time to gain an understanding of firn structure constraining the PFA, to estimate the water volume within the PFA, and to measure PFA temperatures and densities. At our drill site in Southeast Greenland ( approximately 100 km Northwest of Kulusuk), water fills or partially fills the available firn pore space from depths of approximately 12 to 37 m. The temperature within the PFA depths is constant at 0.1 + or - 0.1 degrees C while the 12 m of seasonally dry firn above the PFA has a temperature profile dominated by surface temperature forcing. Near the bottom of the PFA water completely fills available pore space as the firn is compressed to ice entrapping water filled bubbles, as opposed to air filled bubbles, which then start to refreeze. A PFA maximum density is reached as the water filling the pore space, increasing density, begins refreezing back into ice at a lower density. We define this depth as the pore water refreeze depth and use this depth as the bottom of the PFA to calculate volume. It is certain, however that a small amount of water does exist below this depth, which we do not account for. The density profile obtained from the ACT11B firn core, the closest seasonally dry firn core, is compared to both gravitational densities and high resolution densities derived from a neutron density probe at the PFA site. The density comparison shows similar firn structure in the top 12 m of firn above the PFA. Therefore, it is assumed that the dry firn structure at ACT11B is representative of the PFA site allowing an estimation of water volume from density measurements. The estimated water volume in the PFA is 140 + or - 20 Gt, approximately 0.4 mm of sea level rise (SLR), over nine times larger than the RACMO2/GR modeled estimate from April 2011. The fate of the PFA water remains unknown. Hypotheses include that the PFA serves as a temporary buffer to SLR through storage or that it increases SLR contributions through catastrophic drainage to the ocean or by increasing flow speeds of nearby outlet glaciers. JF - American Geophysical Union Fall Meeting AU - Koenig, L AU - Miege, C AU - Forster, R R AU - Brucker, L AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract C43D EP - 05 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1566815059?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Water+volume+estimates+of+the+Greenland+perennial+firn+aquifer+from+in+situ+measurements&rft.au=Koenig%2C+L%3BMiege%2C+C%3BForster%2C+R+R%3BBrucker%2C+L%3BAnonymous&rft.aulast=Koenig&rft.aufirst=L&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2014-01-01 N1 - PubXState - DC N1 - Last updated - 2014-10-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - Heat flux and crustal thickness in Greenland adjacent to and under the ice sheet AN - 1566814873; 2014-076210 AB - Within Greenland, the ice-free Scoresbysund region (Central East Greenland) hosts the hottest and largest number of geothermal springs, the shallowest seismic Moho depths, and the highest heat flux estimates from two magnetics-based approaches. Crustal magnetic thickness models made using both global satellite (MF-7, xChaos) and some local airborne data sets (EMM2010) point to thin magnetic crust in the Scoresbysund region; and thick magnetic crust in NW and southernmost Greenland. Recent seismic results suggest that the Scoresbysund region, the largest contiguous ice-free region within Greenland, hosts the shallowest Moho depths (24-27 km). Temperatures of up to 62 deg C have been measured from the geothermal springs here. Adjacent ice-covered regions are likely to be most heavily affected by the relatively high geothermal activity. Because hot springs and geothermal anomalies have only been identified along the coast where they are easily accessible, and because little is known of their areal extent, we are attempting more detailed mapping of these geothermal anomalies using the TIRS data set (100 m spot size) on the recently launched Landsat-8 satellite. Magnetic and seismic results suggest that heat fluxes in the Scoresbysund region may be as much as four times larger than that in NW and southernmost Greenland, on the assumption of steady-state 1-d heat conduction and heat production restricted to the crust. Existing magnetics-based crustal thickness and heat flux models under and adjacent to the Greenland ice sheet are based on satellite and low-altitude airborne data sets. Magnetic field measurements from high (20 km) altitude are strongly preferred because of their increased sensitivity to wavelengths characteristic of the entire magnetic crust, and their ability to suppress local remanent magnetic field signatures. As a consequence, we are developing a proposal for a high-altitude airborne magnetic and thermal IR mission to map the geothermal heat flux under and adjacent to the Greenland ice sheet. The results of the proposed mission, IceBase, will reduce the uncertainty in future sea level rise, in turn allowing a more informed assessment of its impact on society. The mission, part of NASA's Earth Venture program, would begin in 2014 if selected. JF - American Geophysical Union Fall Meeting AU - Purucker, M E AU - Matzka, J AU - Rasmussen, T M AU - Riisager, P AU - Hjartarson, A AU - Jennings, D E AU - Olsen, N AU - Lunsford, A W AU - Jhabvala, M D AU - Bouligand, C AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract C51A EP - 0493 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1566814873?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Heat+flux+and+crustal+thickness+in+Greenland+adjacent+to+and+under+the+ice+sheet&rft.au=Purucker%2C+M+E%3BMatzka%2C+J%3BRasmussen%2C+T+M%3BRiisager%2C+P%3BHjartarson%2C+A%3BJennings%2C+D+E%3BOlsen%2C+N%3BLunsford%2C+A+W%3BJhabvala%2C+M+D%3BBouligand%2C+C%3BAnonymous&rft.aulast=Purucker&rft.aufirst=M&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2014-01-01 N1 - PubXState - DC N1 - Last updated - 2014-10-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - Supraglacial meltwater runoff from the Greenland ice sheet AN - 1566814213; 2014-076193 AB - This presentation summarizes collaborative field and remote sensing research studying Greenland ice sheet meltwater flux through supraglacial rivers flowing over its surface and in proglacial rivers that emerge along its edge. High-resolution visible/near-infrared WorldView-2 satellite images were acquired simultaneously with in situ measurements of river hydraulic properties, including flow velocities from autonomous GPS drifters and ADCP, bathymetric depth soundings, water surface slopes, and hydraulic roughness. High-resolution mapping of supraglacial lake and river depths across the ablation zone were enabled through calibration of WorldView-2 images with in situ field spectra and water depth soundings collected from an unmanned autonomous watercraft. Fusion of these satellite and in situ datasets permits quantitative estimation of meltwater flux flowing over the ice sheet surface and entering moulins, and in situ proglacial measurements enable estimation of total meltwater export leaving the ice sheet. Analysis suggests that these supra- and pro-glacial rivers represent critical pathways for transport of meltwater runoff from the ice sheet surface to the global ocean. JF - American Geophysical Union Fall Meeting AU - Smith, L C AU - Chu, V AU - Yang, K AU - Rennermalm, A K AU - Legleiter, C J AU - Gleason, C J AU - Pitcher, L H AU - Moustafa, S AU - Overstreet, B T AU - Behar, A AU - Tedesco, M AU - Forster, R R AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract C43D EP - 04 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1566814213?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Supraglacial+meltwater+runoff+from+the+Greenland+ice+sheet&rft.au=Smith%2C+L+C%3BChu%2C+V%3BYang%2C+K%3BRennermalm%2C+A+K%3BLegleiter%2C+C+J%3BGleason%2C+C+J%3BPitcher%2C+L+H%3BMoustafa%2C+S%3BOverstreet%2C+B+T%3BBehar%2C+A%3BTedesco%2C+M%3BForster%2C+R+R%3BAnonymous&rft.aulast=Smith&rft.aufirst=L&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2014-01-01 N1 - PubXState - DC N1 - Last updated - 2014-10-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - DEVELOPing the Link Between Fire and Ice: How Changes in Snowpack Impact Wildfire Occurrence in the Sierra Nevada AN - 1547847000; 19758935 AB - In California alone, wildfires cause over $800 million in property damage and place countless lives in danger each year. Recently, the California Rim Fire-the third largest wildfire in California's history-burned more than 390 mi super(2) (250,000 acres) of wilderness west of Yosemite National Park. The Rim Fire impacted vital infrastructure linked to the water supply for millions of California residents and affected homes and businesses near Yosemite National Park. Fires such as this contribute to the loss and degradation of human capital and infrastructure, impact vulnerable ecosystems through changes in species distribution and hydrology, and exacerbate climate change through the release of stored carbon into the atmosphere. Smoke from fires also contributes to air pollution and respiratory diseases. JF - Earth Observer AU - Nguyen, Andrew AU - Mueller, Chase AU - Kuss, Amber Jean AD - San Jose State University, andrewnguyen@nasa.gov Y1 - 2013/12// PY - 2013 DA - December 2013 SP - 12 EP - 16 PB - EOS Project Science Office, NASA Goddard Space Flight Center Greenbelt MD 20771 USA VL - 25 IS - 6 KW - Pollution Abstracts; Sustainability Science Abstracts; Health & Safety Science Abstracts KW - Ice KW - Fires KW - Human capital KW - Ecosystems KW - Climate change KW - National parks KW - Respiratory diseases KW - Water supplies KW - USA, California, Sierra Nevada Mts. KW - Smoke KW - Air pollution KW - Infrastructure KW - Wildfire KW - Wilderness KW - USA, California KW - Vulnerability KW - P 0000:AIR POLLUTION KW - M3 1010:Issues in Sustainable Development KW - H 1000:Occupational Safety and Health UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1547847000?accountid=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+Observer&rft.atitle=DEVELOPing+the+Link+Between+Fire+and+Ice%3A+How+Changes+in+Snowpack+Impact+Wildfire+Occurrence+in+the+Sierra+Nevada&rft.au=Nguyen%2C+Andrew%3BMueller%2C+Chase%3BKuss%2C+Amber+Jean&rft.aulast=Nguyen&rft.aufirst=Andrew&rft.date=2013-12-01&rft.volume=25&rft.issue=6&rft.spage=12&rft.isbn=&rft.btitle=&rft.title=Earth+Observer&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-07-01 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Fires; Ice; Human capital; Ecosystems; Climate change; National parks; Respiratory diseases; Water supplies; Infrastructure; Air pollution; Smoke; Wildfire; Wilderness; Vulnerability; USA, California; USA, California, Sierra Nevada Mts. ER - TY - JOUR T1 - Reconstruction of limnology and microbialite formation conditions from carbonate clumped isotope paleothermometry; a test case from Pavilion and Kelly Lakes AN - 1542647207; 2014-051695 AB - Quantitative tools for deciphering the environment of microbialite formation are relatively limited. For example, the carbonate-water geothermometer requires assumptions about the isotopic composition of the water of formation. We explored the utility of using "clumped" isotope thermometry to study microbialites. We measured freshwater microbialites from Pavilion and Kelly Lake and determined the temperature of precipitation and the (super 18) O/ (super 16) O ratio of the waters they grew in. Microbialites are from 10-55 m water depth in Pavilion Lake, and 10-25 m in Kelly, spanning the thermocline in both lakes. At present there is a close association between photosynthetic communities and carbonate precipitation/microbialite formation and thus modern microbialites should record near surface temperatures. Their conditions represent an ideal test case to evaluate the application of clumped isotopes. Isotopic ratios were determined for each sample, and used to reconstruct limnology. Results were then compared to current limnological data from the lake in order to reconstruct the history of microbialite formation. Microbialites collected at shallow depths in Pavilion Lake and Kelly Lake yield clumped isotope-based temperature of formation that match the current measured temperature profiles. Air temperatures can be accurately inferred using published transfer functions relating shallow water temperatures to mean annual air temperature. Similar temperatures are also reconstructed for microbialites collected from deeper parts of both lakes. In contrast, the clumped isotope-based temperature estimates from the deeper microbialites do not match with present limnological characteristics, consistent with published radioisotope ages for the microbialites that suggest deeper microbialites are early Holocene in age. Given the deepest microbialites are receiving <1% of photosynthetically active radiation (PAR), it is likely that the deepest microbialites primarily formed earlier in the Holocene when pollen data and our reconstructed water (super 18) O/ (super 16) O ratios indicate a period of aridity, with lower lake levels resulting in these microbialites being located higher in the photic zone. Our results suggest that clumped isotope thermometry can be used to provide information on the environmental conditions during the time of microbialite formation, which is important to the fields astro and exobiology. Additionally, microbialites can be used to reconstruct past hydrology and climate. JF - American Geophysical Union Fall Meeting AU - Petryshyn, V A AU - Lim, D AU - Laval, B AU - Tripati, A AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract PP21D EP - 04 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1542647207?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Reconstruction+of+limnology+and+microbialite+formation+conditions+from+carbonate+clumped+isotope+paleothermometry%3B+a+test+case+from+Pavilion+and+Kelly+Lakes&rft.au=Petryshyn%2C+V+A%3BLim%2C+D%3BLaval%2C+B%3BTripati%2C+A%3BAnonymous&rft.aulast=Petryshyn&rft.aufirst=V&rft.date=2013-12-01&rft.volume=2013&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 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2014-01-01 N1 - PubXState - DC N1 - Last updated - 2014-07-04 N1 - CODEN - #07548 ER - TY - JOUR T1 - The light (H (super +) , H (super +) (sub 2) , He (super +) ) and heavy (Na (super +) ) pickup ion dynamics in the lunar-like plasma environment; 3D hybrid kinetic modeling AN - 1510397328; 2014-022125 JF - Advances in Space Research AU - Lipatov, Alexander S AU - Cooper, J F AU - Sittler, E C, Jr AU - Hartle, R E Y1 - 2013/12/01/ PY - 2013 DA - 2013 Dec 01 SP - 1929 EP - 1938 PB - Elsevier, Oxford-New York VL - 52 IS - 11 SN - 0273-1177, 0273-1177 KW - numerical models KW - three-dimensional models KW - Moon KW - solar wind KW - atmosphere KW - algorithms KW - kinetics KW - ions KW - exosphere KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1510397328?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Advances+in+Space+Research&rft.atitle=The+light+%28H+%28super+%2B%29+%2C+H+%28super+%2B%29+%28sub+2%29+%2C+He+%28super+%2B%29+%29+and+heavy+%28Na+%28super+%2B%29+%29+pickup+ion+dynamics+in+the+lunar-like+plasma+environment%3B+3D+hybrid+kinetic+modeling&rft.au=Lipatov%2C+Alexander+S%3BCooper%2C+J+F%3BSittler%2C+E+C%2C+Jr%3BHartle%2C+R+E&rft.aulast=Lipatov&rft.aufirst=Alexander&rft.date=2013-12-01&rft.volume=52&rft.issue=11&rft.spage=1929&rft.isbn=&rft.btitle=&rft.title=Advances+in+Space+Research&rft.issn=02731177&rft_id=info:doi/10.1016%2Fj.asr.2013.08.023 L2 - http://www.sciencedirect.com/science/journal/02731177 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 50 N1 - Document feature - illus. N1 - Last updated - 2014-03-27 N1 - CODEN - ASRSDW N1 - SubjectsTermNotLitGenreText - algorithms; atmosphere; exosphere; ions; kinetics; Moon; numerical models; solar wind; three-dimensional models DO - http://dx.doi.org/10.1016/j.asr.2013.08.023 ER - TY - JOUR T1 - Re-analysis of previous laboratory phase curves; 1, Variations of the opposition effect morphology with the textural properties, and an application to planetary surfaces AN - 1507185603; 2014-016329 AB - Typical variations in the opposition effect morphology of laboratory samples at optical wavelengths are investigated to probe the role of the textural properties of the surface (roughness, porosity and grain size). A previously published dataset of 34 laboratory phase curves is re-analyzed and fit with several morphological models. The retrieved morphological parameters that characterize the opposition surge, amplitude, width and slope (A, HWHM and S respectively) are correlated to the single scattering albedo, the roughness, the porosity and the grain size of the samples. To test the universality of the laboratory samples' trends, we use previously published phase curves of planetary surfaces, including the Moon, satellites and rings of the giant planets. The morphological parameters of the surge (A and HWHM) for planetary surfaces are found to have a non-monotonic variation with the single scattering albedo, similar to that observed in asteroids (Belskaya, I.N., Shevchenko, V.G. [2000]. Icarus 147, 94-105), which is unexplained so far. The morphological parameters of the surge (A and HWHM) for laboratory samples seem to exhibit the same non-monotonic variation with single scattering albedo. While the non-monotonic variation with albedo was already observed by Nelson et al. (Nelson, R.M., Hapke, B.W., Smythe, W.D., Hale, A.S., Piatek, J.L. [2004]. Planetary regolith microstructure: An unexpected opposition effect result. In: Mackwell, S., Stansbery, E. (Eds.), Proc. Lunar Sci. Conf. 35, p. 1089), we report here the same variation for the angular width. JF - Icarus AU - Deau, Estelle AU - Flandes, Alberto AU - Spilker, Linda J AU - Petazzoni, Jerome Y1 - 2013/12// PY - 2013 DA - December 2013 SP - 1465 EP - 1488 PB - Elsevier, New York, NY VL - 226 IS - 2 SN - 0019-1035, 0019-1035 KW - albedo KW - volcanic rocks KW - asteroids KW - igneous rocks KW - meteorites KW - laboratory studies KW - photometry KW - topography KW - plutonic rocks KW - aluminum oxides KW - basalts KW - sediments KW - oxides KW - satellites KW - sand KW - Moon KW - clastic sediments KW - textures KW - grain size KW - roughness KW - surface textures KW - native elements KW - porosity KW - ultramafics KW - morphology KW - pyroclastics KW - planetary rings KW - graphite KW - phase curves KW - peridotites KW - diabase KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1507185603?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Re-analysis+of+previous+laboratory+phase+curves%3B+1%2C+Variations+of+the+opposition+effect+morphology+with+the+textural+properties%2C+and+an+application+to+planetary+surfaces&rft.au=Deau%2C+Estelle%3BFlandes%2C+Alberto%3BSpilker%2C+Linda+J%3BPetazzoni%2C+Jerome&rft.aulast=Deau&rft.aufirst=Estelle&rft.date=2013-12-01&rft.volume=226&rft.issue=2&rft.spage=1465&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.01.014 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 127 N1 - PubXState - NY N1 - Document feature - illus. incl. 5 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-03-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - albedo; aluminum oxides; asteroids; basalts; clastic sediments; diabase; grain size; graphite; igneous rocks; laboratory studies; meteorites; Moon; morphology; native elements; oxides; peridotites; phase curves; photometry; planetary rings; plutonic rocks; porosity; pyroclastics; regolith; roughness; sand; satellites; sediments; surface textures; textures; topography; ultramafics; volcanic rocks DO - http://dx.doi.org/10.1016/j.icarus.2013.01.014 ER - TY - JOUR T1 - Irradiated benzene ice provides clues to meteoritic organic chemistry AN - 1507185530; 2014-016319 AB - Aromatic hydrocarbons account for a significant portion of the organic matter in carbonaceous chondrite meteorites, as a component of both the low molecular weight, solvent-extractable compounds and the insoluble organic macromolecular material. Previous work has suggested that the aromatic compounds in carbonaceous chondrites may have originated in the radiation-processed icy mantles of interstellar dust grains. Here we report new studies of the organic residue made from benzene irradiated at 19 K by 0.8 MeV protons. Polyphenyls with up to four rings were unambiguously identified in the residue by gas chromatography-mass spectrometry. Atmospheric pressure photoionization Fourier transform mass spectrometry was used to determine molecular composition, and accurate mass measurements suggested the presence of polyphenyls, partially hydrogenated polyphenyls, and other complex aromatic compounds. The profile of low molecular weight compounds in the residue compared well with extracts from the Murchison and Orgueil meteorites. These results are consistent with the possibility that solid phase radiation chemistry of benzene produced some of the complex aromatics found in meteorites. JF - Icarus AU - Callahan, Michael P AU - Gerakines, Perry A AU - Martin, Mildred G AU - Peeters, Zan AU - Hudson, Reggie L Y1 - 2013/12// PY - 2013 DA - December 2013 SP - 1201 EP - 1209 PB - Elsevier, New York, NY VL - 226 IS - 2 SN - 0019-1035, 0019-1035 KW - icy satellites KW - irradiation KW - stony meteorites KW - Orgueil Meteorite KW - gas chromatograms KW - mass spectra KW - Murchison Meteorite KW - meteorites KW - insoluble residues KW - ice KW - Titan Satellite KW - spectra KW - synthesis KW - satellites KW - chondrites KW - interstellar dust KW - CI chondrites KW - atmosphere KW - carbonaceous chondrites KW - benzene KW - organic compounds KW - cosmic dust KW - chromatograms KW - hydrocarbons KW - CM chondrites KW - polyphenyls KW - aromatic hydrocarbons KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1507185530?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Irradiated+benzene+ice+provides+clues+to+meteoritic+organic+chemistry&rft.au=Callahan%2C+Michael+P%3BGerakines%2C+Perry+A%3BMartin%2C+Mildred+G%3BPeeters%2C+Zan%3BHudson%2C+Reggie+L&rft.aulast=Callahan&rft.aufirst=Michael&rft.date=2013-12-01&rft.volume=226&rft.issue=2&rft.spage=1201&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.07.033 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 50 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2014-03-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - aromatic hydrocarbons; atmosphere; benzene; carbonaceous chondrites; chondrites; chromatograms; CI chondrites; CM chondrites; cosmic dust; gas chromatograms; hydrocarbons; ice; icy satellites; insoluble residues; interstellar dust; irradiation; mass spectra; meteorites; Murchison Meteorite; organic compounds; Orgueil Meteorite; polyphenyls; satellites; spectra; stony meteorites; synthesis; Titan Satellite DO - http://dx.doi.org/10.1016/j.icarus.2013.07.033 ER - TY - JOUR T1 - Olivine or impact melt; nature of the "orange" material on Vesta from Dawn AN - 1507185269; 2014-016332 AB - NASA's Dawn mission observed a great variety of colored terrains on asteroid (4) Vesta during its survey with the Framing Camera (FC). Here we present a detailed study of the orange material on Vesta, which was first observed in color ratio images obtained by the FC and presents a red spectral slope. The orange material deposits can be classified into three types: (a) diffuse ejecta deposited by recent medium-size impact craters (such as Oppia), (b) lobate patches with well-defined edges (nicknamed "pumpkin patches"), and (c) ejecta rays from fresh-looking impact craters. The location of the orange diffuse ejecta from Oppia corresponds to the olivine spot nicknamed "Leslie feature" first identified by Gaffey (Gaffey, M.J. [1997]. Icarus 127, 130-157) from ground-based spectral observations. The distribution of the orange material in the FC mosaic is concentrated on the equatorial region and almost exclusively outside the Rheasilvia basin. Our in-depth analysis of the composition of this material uses complementary observations from FC, the visible and infrared spectrometer (VIR), and the Gamma Ray and Neutron Detector (GRaND). Several possible options for the composition of the orange material are investigated including, cumulate eucrite layer exposed during impact, metal delivered by impactor, olivine-orthopyroxene mixture and impact melt. Based on our analysis, the orange material on Vesta is unlikely to be metal or olivine (originally proposed by Gaffey (Gaffey, M.J. [1997]. Icarus 127, 130-157)). Analysis of the elemental composition of Oppia ejecta blanket with GRaND suggests that its orange material has approximately 25% cumulate eucrite component in a howarditic mixture, whereas two other craters with orange material in their ejecta, Octavia and Arruntia, show no sign of cumulate eucrites. Morphology and topography of the orange material in Oppia and Octavia ejecta and orange patches suggests an impact melt origin. A majority of the orange patches appear to be related to the formation of the Rheasilvia basin. Combining the interpretations from the topography, geomorphology, color and spectral parameters, and elemental abundances, the most probable analog for the orange material on Vesta is impact melt. JF - Icarus AU - Le Corre, Lucille AU - Reddy, Vishnu AU - Schmedemann, Nico AU - Becker, Kris J AU - O'Brien, David P AU - Yamashita, Naoyuki AU - Peplowski, Patrick N AU - Prettyman, Thomas H AU - Li, Jianyang AU - Cloutis, Edward A AU - Denevi, Brett W AU - Kneissl, Thomas AU - Palmer, Eric AU - Gaskell, Robert W AU - Nathues, Andreas AU - Gaffey, Michael J AU - Mittlefehldt, David W AU - Garry, William B AU - Sierks, Holger AU - Russell, Christopher T AU - Raymond, Carol A AU - De Sanctis, Maria C AU - Ammanito, Eleonora Y1 - 2013/12// PY - 2013 DA - December 2013 SP - 1568 EP - 1594 PB - Elsevier, New York, NY VL - 226 IS - 2 SN - 0019-1035, 0019-1035 KW - silicates KW - imagery KW - Dawn Framing Camera KW - stony meteorites KW - impact features KW - asteroids KW - Rheasilvia Basin KW - GRaND instrument KW - olivine group KW - Dawn Mission KW - melts KW - meteorites KW - impact melts KW - mosaics KW - cumulates KW - olivine KW - visible and infrared spectrometer KW - orthosilicates KW - Oppia Crater KW - color imagery KW - Octavia Crater KW - Vesta Asteroid KW - HED meteorites KW - ejecta KW - achondrites KW - nesosilicates KW - Gamma Ray and Neutron Detector KW - eucrite KW - impact craters KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1507185269?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Olivine+or+impact+melt%3B+nature+of+the+%22orange%22+material+on+Vesta+from+Dawn&rft.au=Le+Corre%2C+Lucille%3BReddy%2C+Vishnu%3BSchmedemann%2C+Nico%3BBecker%2C+Kris+J%3BO%27Brien%2C+David+P%3BYamashita%2C+Naoyuki%3BPeplowski%2C+Patrick+N%3BPrettyman%2C+Thomas+H%3BLi%2C+Jianyang%3BCloutis%2C+Edward+A%3BDenevi%2C+Brett+W%3BKneissl%2C+Thomas%3BPalmer%2C+Eric%3BGaskell%2C+Robert+W%3BNathues%2C+Andreas%3BGaffey%2C+Michael+J%3BMittlefehldt%2C+David+W%3BGarry%2C+William+B%3BSierks%2C+Holger%3BRussell%2C+Christopher+T%3BRaymond%2C+Carol+A%3BDe+Sanctis%2C+Maria+C%3BAmmanito%2C+Eleonora&rft.aulast=Le+Corre&rft.aufirst=Lucille&rft.date=2013-12-01&rft.volume=226&rft.issue=2&rft.spage=1568&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.08.013 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 97 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables, sketch maps N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-05-15 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - achondrites; asteroids; color imagery; cumulates; Dawn Framing Camera; Dawn Mission; ejecta; eucrite; Gamma Ray and Neutron Detector; GRaND instrument; HED meteorites; imagery; impact craters; impact features; impact melts; melts; meteorites; mosaics; nesosilicates; Octavia Crater; olivine; olivine group; Oppia Crater; orthosilicates; Rheasilvia Basin; silicates; stony meteorites; Vesta Asteroid; visible and infrared spectrometer DO - http://dx.doi.org/10.1016/j.icarus.2013.08.013 ER - TY - JOUR T1 - Effects of Trojan exoplanets on the reflex motions of their parent stars AN - 1507175050; 2014-016337 AB - This paper collects and corrects certain results on the radial velocity variations of stars in Trojan systems, where two exoplanets separated by 60 degrees of longitude share the same orbit. Radial velocity measurements can seriously misjudge the masses and densities of planets in such systems. I also derive a simple new method for combining tidal perturbations from two or more sources, such as the tides raised on Earth by the Sun and Moon. This method then shows that the observable effects of tides raised on stars by Trojan planets are also misleading. However, the combination of both tidal and radial velocity measurements can determine the mass of each planet. I conclude with a discussion of possible scenarios for the formation of co-orbital exoplanets. JF - Icarus AU - Dobrovolskis, Anthony R Y1 - 2013/12// PY - 2013 DA - December 2013 SP - 1635 EP - 1641 PB - Elsevier, New York, NY VL - 226 IS - 2 SN - 0019-1035, 0019-1035 KW - extrasolar planets KW - density KW - Doppler effect KW - orbits KW - new methods KW - geometry KW - tides KW - radial velocity KW - mass KW - planets KW - motions KW - Earth-Moon couple KW - detection KW - Trojan planets KW - dynamics KW - stars KW - velocity KW - corrections KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1507175050?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Effects+of+Trojan+exoplanets+on+the+reflex+motions+of+their+parent+stars&rft.au=Dobrovolskis%2C+Anthony+R&rft.aulast=Dobrovolskis&rft.aufirst=Anthony&rft.date=2013-12-01&rft.volume=226&rft.issue=2&rft.spage=1635&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.06.020 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 55 N1 - PubXState - NY N1 - Document feature - illus. N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-03-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - corrections; density; detection; Doppler effect; dynamics; Earth-Moon couple; extrasolar planets; geometry; mass; motions; new methods; orbits; planets; radial velocity; stars; tides; Trojan planets; velocity DO - http://dx.doi.org/10.1016/j.icarus.2013.06.020 ER - TY - JOUR T1 - Physical ecology of hypolithic communities in the central Namib Desert: The role of fog, rain, rock habitat, and light AN - 1500766907; 19157610 AB - Hypolithic microbial communities are productive niches in deserts worldwide, but many facets of their basic ecology remain unknown. The Namib Desert is an important site for hypolith study because it has abundant quartz rocks suitable for colonization and extends west to east across a transition from fog- to rain-dominated moisture sources. We show that fog sustains and impacts hypolithic ecology in several ways, as follows: (1) fog effectively replaces rainfall in the western zone of the central Namib to enable high ( greater than or equal to 95%) hypolithic abundance at landscape (1-10 km) and larger scales; and (2) high water availability, through fog (western zone) and/or rainfall (eastern zone), results in smaller size-class rocks being colonized (mean 6.3 plus or minus 1.2 cm) at higher proportions (e.g., 98% versus approximately 3%) than in previously studied hyperarid deserts. We measured 0.1% of incident sunlight as the lower limit for hypolithic growth on quartz rocks in the Namib and found that uncolonized ventral rock surfaces were limited by light rather than moisture. In situ monitoring showed that although rainfall supplied more liquid water (36 h) per event than fog (mean 4 h), on an equivalent annual basis, fog provided nearly twice as much liquid water as rainfall to the hypolithic zone. Hypolithic abundance reaches 100% at a mean annual precipitation (MAP) of approximately 40-60 mm, but at a much lower MAP (approximately 25 mm) when moisture from fog is available. Key Points * Fog effectively replaces rainfall to enable high hypolithic abundance in Namib * Hypolithic colonization is light, not moisture, limited at 1% incident sunlight * Fog supplied nearly twice the liquid water to the hypolithic zone as rainfall JF - Journal of Geophysical Research. G. Biogeosciences AU - Warren-Rhodes, Kimberley A AU - McKay, Christopher P AU - Boyle, Linda Ng AU - Wing, Michael R AU - Kiekebusch, Elsita M AU - Cowan, Don A AU - Stomeo, Francesca AU - Pointing, Stephen B AU - Kaseke, Kudzai F AU - Eckardt, Frank AU - Henschel, Joh R AU - Anisfeld, Ari AU - Seely, Mary AU - Rhodes, Kevin L AD - Space Science Division, NASA Ames Research Center, Moffett Field, California, USA. Y1 - 2013/12// PY - 2013 DA - December 2013 SP - 1451 EP - 1460 PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD United Kingdom VL - 118 IS - 4 SN - 2169-8953, 2169-8953 KW - Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Ecology Abstracts KW - hypolith KW - cyanobacteria KW - Namib Desert KW - fog KW - rainfall KW - light KW - Moisture KW - Rainfall KW - Niches KW - Abundance KW - Water availability KW - Ecology KW - Colonization KW - Growth KW - Quartz KW - Sunlight KW - Namibia, Namib Desert KW - Environmental monitoring KW - Landscape KW - Precipitation KW - Habitat KW - Fog KW - Light effects KW - Rocks KW - Deserts KW - Rain KW - Monitoring KW - D 04040:Ecosystem and Ecology Studies KW - Q2 09261:General KW - AQ 00003:Monitoring and Analysis of Water and Wastes KW - SW 0815:Precipitation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1500766907?accountid=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+Geophysical+Research.+G.+Biogeosciences&rft.atitle=Physical+ecology+of+hypolithic+communities+in+the+central+Namib+Desert%3A+The+role+of+fog%2C+rain%2C+rock+habitat%2C+and+light&rft.au=Warren-Rhodes%2C+Kimberley+A%3BMcKay%2C+Christopher+P%3BBoyle%2C+Linda+Ng%3BWing%2C+Michael+R%3BKiekebusch%2C+Elsita+M%3BCowan%2C+Don+A%3BStomeo%2C+Francesca%3BPointing%2C+Stephen+B%3BKaseke%2C+Kudzai+F%3BEckardt%2C+Frank%3BHenschel%2C+Joh+R%3BAnisfeld%2C+Ari%3BSeely%2C+Mary%3BRhodes%2C+Kevin+L&rft.aulast=Warren-Rhodes&rft.aufirst=Kimberley&rft.date=2013-12-01&rft.volume=118&rft.issue=4&rft.spage=1451&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research.+G.+Biogeosciences&rft.issn=21698953&rft_id=info:doi/10.1002%2Fjgrg.20117 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-02-01 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Environmental monitoring; Colonization; Growth; Deserts; Niches; Quartz; Habitat; Fog; Light effects; Rainfall; Abundance; Landscape; Precipitation; Water availability; Sunlight; Rain; Ecology; Moisture; Rocks; Monitoring; Namibia, Namib Desert DO - http://dx.doi.org/10.1002/jgrg.20117 ER - TY - NEWS T1 - NASA Researchers to Flying Insects: 'Bug Off!' AN - 1460283603 JF - UPI Space Daily AU - Joe Atkinson for Langley Research Center Y1 - 2013/11/21/ PY - 2013 DA - 2013 Nov 21 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1460283603?accountid=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+Researchers+to+Flying+Insects%3A+%27Bug+Off%21%27&rft.au=Joe+Atkinson+for+Langley+Research+Center&rft.aulast=Joe+Atkinson+for+Langley+Research+Center&rft.aufirst=&rft.date=2013-11-21&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 - 2013-11-21 ER - TY - NEWS T1 - NASA Kepler Results Usher in a New Era of Astronomy AN - 1459864715 JF - UPI Space Daily AU - Michele Johnson for Ames Research Center Y1 - 2013/11/21/ PY - 2013 DA - 2013 Nov 21 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1459864715?accountid=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+Kepler+Results+Usher+in+a+New+Era+of+Astronomy&rft.au=Michele+Johnson+for+Ames+Research+Center&rft.aulast=Michele+Johnson+for+Ames+Research+Center&rft.aufirst=&rft.date=2013-11-21&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 - 2013-11-21 ER - TY - JOUR T1 - Primordial argon isotope fractionation in the atmosphere of Mars measured by the SAM instrument on Curiosity and implications for atmospheric loss AN - 1529794157; 2014-036689 AB - The quadrupole mass spectrometer of the Sample Analysis at Mars (SAM) instrument on Curiosity rover has made the first high-precision measurement of the nonradiogenic argon isotope ratio in the atmosphere of Mars. The resulting value of (super 36) Ar/ (super 38) Ar = 4.2 + or - 0.1 is highly significant for it provides excellent evidence that "Mars" meteorites are indeed of Martian origin, and it points to a significant loss of argon of at least 50% and perhaps as high as 85-95% from the atmosphere of Mars in the past 4 billion years. Taken together with the isotopic fractionations in N, C, H, and O measured by SAM, these results imply a substantial loss of atmosphere from Mars in the posthydrodynamic escape phase. Abstract Copyright (2013), The Authors. Geophysical Research Letters published by Wiley on behalf of the American Geophysical Union. JF - Geophysical Research Letters AU - Atreya, Sushil K AU - Trainer, Melissa G AU - Franz, Heather B AU - Wong, Michael H AU - Manning, Heidi L K AU - Malespin, Charles A AU - Mahaffy, Paul R AU - Conrad, Pamela G AU - Brunner, Anna E AU - Leshin, Laurie A AU - Jones, John H AU - Webster, Christopher R AU - Owen, Tobias C AU - Pepin, Robert O AU - Navarro-Gonzalez, R Y1 - 2013/11/16/ PY - 2013 DA - 2013 Nov 16 SP - 5605 EP - 5609 PB - American Geophysical Union, Washington, DC VL - 40 IS - 21 SN - 0094-8276, 0094-8276 KW - isotope fractionation KW - isotopes KW - isotope ratios KW - atmosphere KW - Mars KW - stable isotopes KW - argon KW - terrestrial planets KW - Mars Exploration Rover KW - planets KW - radioactive isotopes KW - noble gases KW - Curiosity Rover KW - Ar-38/Ar-36 KW - chemical composition KW - 04:Extraterrestrial geology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1529794157?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Primordial+argon+isotope+fractionation+in+the+atmosphere+of+Mars+measured+by+the+SAM+instrument+on+Curiosity+and+implications+for+atmospheric+loss&rft.au=Atreya%2C+Sushil+K%3BTrainer%2C+Melissa+G%3BFranz%2C+Heather+B%3BWong%2C+Michael+H%3BManning%2C+Heidi+L+K%3BMalespin%2C+Charles+A%3BMahaffy%2C+Paul+R%3BConrad%2C+Pamela+G%3BBrunner%2C+Anna+E%3BLeshin%2C+Laurie+A%3BJones%2C+John+H%3BWebster%2C+Christopher+R%3BOwen%2C+Tobias+C%3BPepin%2C+Robert+O%3BNavarro-Gonzalez%2C+R&rft.aulast=Atreya&rft.aufirst=Sushil&rft.date=2013-11-16&rft.volume=40&rft.issue=21&rft.spage=5605&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2013GL057763 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 47 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2014-05-29 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - Ar-38/Ar-36; argon; atmosphere; chemical composition; Curiosity Rover; isotope fractionation; isotope ratios; isotopes; Mars; Mars Exploration Rover; noble gases; planets; radioactive isotopes; stable isotopes; terrestrial planets DO - http://dx.doi.org/10.1002/2013GL057763 ER - TY - JOUR T1 - Ar-Ar ages and trapped Ar components in Martian shergottites RBT 04262 and LAR 06319 AN - 1464889851; 2013-091204 AB - We made (super 39) Ar- (super 40) Ar (Ar-Ar) analyses of whole rock (WR) and mineral samples of two Martian shergottites, RBT 04262 (RBT) and LAR 06319 (LAR), in order to determine their Ar-Ar ages and the (super 40) Ar/ (super 36) Ar ratios of the trapped Martian Ar they contain. All samples released trapped (excess) (super 40) Ar and (super 36) Ar and suggested Ar-Ar ages older than their formation ages. Because trapped Ar components having different (super 40) Ar/ (super 36) Ar were released at different extraction temperatures, we utilized only a portion of the data to derive preferred Ar-Ar ages. We obtain Ar-Ar ages of 171+ or -8Ma for RBT plagioclase and 163+ or -13Ma for LAR whole rock. We identify two trapped Ar components. At low temperatures, particularly for plagioclase, Trapped-A with (super 40) Ar/ (super 36) Ar 285+ or -3 was released, and we believe this is most likely absorbed terrestrial air. At high extraction temperatures, particularly for pyroxene, Trapped-B with (super 40) Ar/ (super 36) Ar 1813+ or -127 was released. The poikilitic/non-poikilitic texture of RBT and the presence of large pyroxene oikocrysts allowed a clear definition of Trapped-B. This Ar component is Martian, and its isotopic similarity to the Martian atmospheric composition suggests that it may represent Martian atmospheric Ar incorporated into the shergottite melt via crustal rocks. Trapped-B partitioned into pyroxene at a constant molar ratio of K/ (super 36) Ar (sub Tr) =33.2+ or -9.5X10 (super 6) for RBT 04262, and 80+ or -21X10 (super 6) for LAR 06319. Trapped-A mixed in different proportions with Trapped-B could give apparently intermediate trapped (super 40) Ar/ (super 36) Ar compositions commonly observed in shergottites. Abstract Copyright (2013) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Park, Jisun AU - Bogard, Donald D AU - Nyquist, Laurence E AU - Garrison, Daniel H AU - Mikouchi, Takashi Y1 - 2013/11/15/ PY - 2013 DA - 2013 Nov 15 SP - 546 EP - 570 PB - Elsevier, New York, NY VL - 121 SN - 0016-7037, 0016-7037 KW - Roberts Massive Meteorite KW - upper Precambrian KW - stony meteorites KW - isotopes KW - Paleoproterozoic KW - Martian meteorites KW - SNC Meteorites KW - meteorites KW - radioactive isotopes KW - dates KW - absolute age KW - Larkman Nunatak Meteorite KW - spectra KW - geochemistry KW - Ar/Ar KW - Precambrian KW - Jurassic KW - Proterozoic KW - cosmochemistry KW - achondrites KW - Mesozoic KW - RBT 0462 KW - shergottite KW - LAR 06319 KW - SEM data KW - backscattering KW - 05B:Petrology of meteorites and tektites KW - 03:Geochronology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1464889851?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Ar-Ar+ages+and+trapped+Ar+components+in+Martian+shergottites+RBT+04262+and+LAR+06319&rft.au=Park%2C+Jisun%3BBogard%2C+Donald+D%3BNyquist%2C+Laurence+E%3BGarrison%2C+Daniel+H%3BMikouchi%2C+Takashi&rft.aulast=Park&rft.aufirst=Jisun&rft.date=2013-11-15&rft.volume=121&rft.issue=&rft.spage=546&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2013.06.045 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2013-01-01 N1 - Number of references - 67 N1 - PubXState - NY N1 - Document feature - illus. incl. 6 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2013-12-05 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - absolute age; achondrites; Ar/Ar; backscattering; cosmochemistry; dates; geochemistry; isotopes; Jurassic; LAR 06319; Larkman Nunatak Meteorite; Martian meteorites; Mesozoic; meteorites; Paleoproterozoic; Precambrian; Proterozoic; radioactive isotopes; RBT 0462; Roberts Massive Meteorite; SEM data; shergottite; SNC Meteorites; spectra; stony meteorites; upper Precambrian DO - http://dx.doi.org/10.1016/j.gca.2013.06.045 ER - TY - JOUR T1 - A 500-kiloton airburst over Chelyabinsk and an enhanced hazard from small impactors AN - 1469629325; 2013-098164 JF - Nature (London) AU - Brown, P G AU - Assink, J D AU - Astiz, L AU - Blaauw, R AU - Boslough, M B AU - Borovicka, J AU - Brachet, N AU - Brown, D AU - Campbell-Brown, M AU - Ceranna, L AU - Cooke, W AU - de Groot-Hedlin, C AU - Drob, D P AU - Edwards, W AU - Evers, L G AU - Garces, M AU - Gill, J AU - Hedlin, M AU - Kingery, A AU - Laske, G AU - Le Pichon, A AU - Mialle, P AU - Moser, D E AU - Saffer, A AU - Silber, E AU - Smets, P AU - Spalding, R E AU - Spurny, P AU - Tagliaferri, E AU - Uren, D AU - Weryk, R J AU - Whitaker, R AU - Krzeminski, Z Y1 - 2013/11/14/ PY - 2013 DA - 2013 Nov 14 SP - 238 EP - 241 PB - Macmillan Journals, London VL - 503 IS - 7475 SN - 0028-0836, 0028-0836 KW - overpressure KW - power law KW - geologic hazards KW - asteroids KW - explosions KW - damage KW - bolides KW - atmosphere KW - Russian Federation KW - frequency KW - impacts KW - airbursts KW - Chelyabinsk Meteorite KW - models KW - meteors KW - brightness KW - meteorites KW - Chelyabinsk Russian Federation KW - Commonwealth of Independent States KW - natural hazards KW - nuclear explosions KW - energy KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1469629325?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=A+500-kiloton+airburst+over+Chelyabinsk+and+an+enhanced+hazard+from+small+impactors&rft.au=Brown%2C+P+G%3BAssink%2C+J+D%3BAstiz%2C+L%3BBlaauw%2C+R%3BBoslough%2C+M+B%3BBorovicka%2C+J%3BBrachet%2C+N%3BBrown%2C+D%3BCampbell-Brown%2C+M%3BCeranna%2C+L%3BCooke%2C+W%3Bde+Groot-Hedlin%2C+C%3BDrob%2C+D+P%3BEdwards%2C+W%3BEvers%2C+L+G%3BGarces%2C+M%3BGill%2C+J%3BHedlin%2C+M%3BKingery%2C+A%3BLaske%2C+G%3BLe+Pichon%2C+A%3BMialle%2C+P%3BMoser%2C+D+E%3BSaffer%2C+A%3BSilber%2C+E%3BSmets%2C+P%3BSpalding%2C+R+E%3BSpurny%2C+P%3BTagliaferri%2C+E%3BUren%2C+D%3BWeryk%2C+R+J%3BWhitaker%2C+R%3BKrzeminski%2C+Z&rft.aulast=Brown&rft.aufirst=P&rft.date=2013-11-14&rft.volume=503&rft.issue=7475&rft.spage=238&rft.isbn=&rft.btitle=&rft.title=Nature+%28London%29&rft.issn=00280836&rft_id=info:doi/10.1038%2Fnature12741 L2 - http://www.nature.com/nature/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 27 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2013-12-20 N1 - CODEN - NATUAS N1 - SubjectsTermNotLitGenreText - airbursts; asteroids; atmosphere; bolides; brightness; Chelyabinsk Meteorite; Chelyabinsk Russian Federation; Commonwealth of Independent States; damage; energy; explosions; frequency; geologic hazards; impacts; meteorites; meteors; models; natural hazards; nuclear explosions; overpressure; power law; Russian Federation DO - http://dx.doi.org/10.1038/nature12741 ER - TY - NEWS T1 - Hardware Ready for Pressure Testing in Preparation for Orion Launch AN - 1449679586 JF - UPI Space Daily AU - Sasha Congiu for Langley Research Center News Y1 - 2013/11/10/ PY - 2013 DA - 2013 Nov 10 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1449679586?accountid=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=Hardware+Ready+for+Pressure+Testing+in+Preparation+for+Orion+Launch&rft.au=Sasha+Congiu+for+Langley+Research+Center+News&rft.aulast=Sasha+Congiu+for+Langley+Research+Center+News&rft.aufirst=&rft.date=2013-11-10&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 - 2013-11-10 ER - TY - JOUR T1 - Asymmetric distribution of lunar impact basins caused by variations in target properties AN - 1524613125; 2014-009641 AB - Maps of crustal thickness derived from NASA's Gravity Recovery and Interior Laboratory (GRAIL) mission revealed more large impact basins on the nearside hemisphere of the Moon than on its farside. The enrichment in heat-producing elements and prolonged volcanic activity on the lunar nearside hemisphere indicate that the temperature of the nearside crust and upper mantle was hotter than that of the farside at the time of basin formation. Using the iSALE-2D hydrocode to model impact basin formation, we found that impacts on the hotter nearside would have formed basins with up to twice the diameter of similar impacts on the cooler farside hemisphere. The size distribution of lunar impact basins is thus not representative of the earliest inner solar system impact bombardment. JF - Science AU - Miljkovic, Katarina AU - Wieczorek, Mark A AU - Collins, Gareth S AU - Laneuville, Matthieu AU - Neumann, Gregory A AU - Melosh, H Jay AU - Solomon, Sean C AU - Phillips, Roger J AU - Smith, David E AU - Zuber, Maria T Y1 - 2013/11/08/ PY - 2013 DA - 2013 Nov 08 SP - 724 EP - 726 PB - American Association for the Advancement of Science, Washington, DC VL - 342 IS - 6159 SN - 0036-8075, 0036-8075 KW - impact features KW - Moon KW - geophysical methods KW - mapping KW - impacts KW - variations KW - models KW - gravity methods KW - size distribution KW - KREEP KW - surface features KW - impact craters KW - symmetry KW - Gravity Recovery and Interior Laboratory KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1524613125?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Asymmetric+distribution+of+lunar+impact+basins+caused+by+variations+in+target+properties&rft.au=Miljkovic%2C+Katarina%3BWieczorek%2C+Mark+A%3BCollins%2C+Gareth+S%3BLaneuville%2C+Matthieu%3BNeumann%2C+Gregory+A%3BMelosh%2C+H+Jay%3BSolomon%2C+Sean+C%3BPhillips%2C+Roger+J%3BSmith%2C+David+E%3BZuber%2C+Maria+T&rft.aulast=Miljkovic&rft.aufirst=Katarina&rft.date=2013-11-08&rft.volume=342&rft.issue=6159&rft.spage=724&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.1243224 L2 - http://www.sciencemag.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 32 N1 - PubXState - DC N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2014-05-15 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - geophysical methods; Gravity Recovery and Interior Laboratory; gravity methods; impact craters; impact features; impacts; KREEP; mapping; models; Moon; size distribution; surface features; symmetry; variations DO - http://dx.doi.org/10.1126/science.1243224 ER - TY - CPAPER T1 - Bubble Point Pressures of Binary Mixtures Wetting Screens Against a Vapor: Implications for Low Gravity Cryogenic Liquid Acquisition T2 - 2013 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2013) AN - 1490512839; 6250535 JF - 2013 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2013) AU - Hartwig, Jason AU - Mann, J Y1 - 2013/11/03/ PY - 2013 DA - 2013 Nov 03 KW - Vapors UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1490512839?accountid=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=2013+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2013%29&rft.atitle=Bubble+Point+Pressures+of+Binary+Mixtures+Wetting+Screens+Against+a+Vapor%3A+Implications+for+Low+Gravity+Cryogenic+Liquid+Acquisition&rft.au=Hartwig%2C+Jason%3BMann%2C+J&rft.aulast=Hartwig&rft.aufirst=Jason&rft.date=2013-11-03&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2013+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://aiche.confex.com/aiche/2013/webprogram/meeting2013-11-03.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-11-30 N1 - Last updated - 2014-02-10 ER - TY - JOUR T1 - Glass-like lattice thermal conductivity and high thermoelectric efficiency in Yb sub(9)Mn sub(4.2)Sb sub( 9) AN - 1562673623; 20519236 AB - Motivated by excellent thermoelectric performance in the well-known Yb-based Zintl compounds Yb sub(14)MnSb sub(11) and YbZn sub(2-x)Mn sub(x)Sb sub(2), this study investigates the thermoelectric properties of Yb sub(9)Mn sub(4.2)Sb sub( 9). Unlike most transition metal containing Zintl phases, Yb sub(9)Mn sub(4.2)Sb sub( 9) contains a partially occupied Mn site and thus does not have a valence-precise stoichiometry. Samples were synthesized by direct ball milling of the elements, followed by hot pressing. Consistent with previous reports, X-ray diffraction and wavelength dispersive spectroscopy confirmed a narrow composition range near Yb sub(9)Mn sub(4.2)Sb sub( 9). High temperature measurements of the electronic properties of Yb sub(9)Mn sub(4.2)Sb sub( 9) indicate that it is a degenerate p-type semiconductor with a band gap sufficiently large for high temperature thermoelectric applications. Hall measurements reveal that Yb sub(9)Mn sub(4.2)Sb sub( 9) has a high extrinsic carrier concentration ( similar to 10 super(20) h super(+) cm super(-3)), which is due to the deviation from the theoretical "Zintl composition" of Yb sub(9)Mn sub(4.5)Sb sub( 9). The measured carrier concentration coincides with the optimum concentration predicted using a single parabolic band model. Measurements of the thermal diffusivity and heat capacity reveal an extremely low, temperature-independent lattice thermal conductivity in this compound ( Kappa sub(L) < 0.4 W mK super(-1)), which is due to both the large unit cell size (44 atoms per primitive cell) and substantial disorder on the Mn site. This favorable combination of optimized electronic properties and low lattice thermal conductivity leads to a promising figure of merit at high temperature (zT= 0.7 at 950 K). JF - Journal of materials chemistry. A, Materials for energy and sustainability AU - Bux, Sabah K AU - Zevalkink, Alexandra AU - Janka, Oliver AU - Uhl, David AU - Kauzlarich, Susan AU - Snyder, Jeffrey G AU - Fleurial, Jean-Pierre AD - Thermal Energy Conversion Technologies Group; Jet Propulsion Laboratory; California Institute of Technology; 4800 Oak Grove Drive, MS 277-207; Pasadena; CA 91109; USA; , sabah.k.bux@jpl.nasa.gov Y1 - 2013/11// PY - 2013 DA - Nov 2013 SP - 215 EP - 220 PB - Royal Society of Chemistry VL - 2 IS - 1 SN - 2050-7488, 2050-7488 KW - Sustainability Science Abstracts KW - Metals KW - Thermal conductivity KW - High temperature KW - Energy KW - Thermal diffusivity KW - Spectroscopy KW - X-ray diffraction KW - Sustainability KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1562673623?accountid=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=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.atitle=Glass-like+lattice+thermal+conductivity+and+high+thermoelectric+efficiency+in+Yb+sub%289%29Mn+sub%284.2%29Sb+sub%28+9%29&rft.au=Bux%2C+Sabah+K%3BZevalkink%2C+Alexandra%3BJanka%2C+Oliver%3BUhl%2C+David%3BKauzlarich%2C+Susan%3BSnyder%2C+Jeffrey+G%3BFleurial%2C+Jean-Pierre&rft.aulast=Bux&rft.aufirst=Sabah&rft.date=2013-11-01&rft.volume=2&rft.issue=1&rft.spage=215&rft.isbn=&rft.btitle=&rft.title=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.issn=20507488&rft_id=info:doi/10.1039%2Fc3ta14021k LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-09-01 N1 - Number of references - 28 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Metals; Thermal conductivity; Energy; High temperature; Thermal diffusivity; X-ray diffraction; Spectroscopy; Sustainability DO - http://dx.doi.org/10.1039/c3ta14021k ER - TY - JOUR T1 - Transitioning research to operations; transforming the "valley of death" into a "valley of opportunity" AN - 1542646289; 2014-048484 JF - Space Weather AU - Merceret, Francis J AU - O'Brien, T P AU - Roeder, William P AU - Huddleston, Lisa L AU - Bauman, William H, III AU - Jedlovec, Gary J Y1 - 2013/11// PY - 2013 DA - November 2013 SP - 637 EP - 640 PB - American Geophysical Union, Washington, DC VL - 11 IS - 11 KW - programs KW - technology KW - monitoring KW - space weather KW - interplanetary space KW - satellite methods KW - research KW - space shuttles KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1542646289?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Space+Weather&rft.atitle=Transitioning+research+to+operations%3B+transforming+the+%22valley+of+death%22+into+a+%22valley+of+opportunity%22&rft.au=Merceret%2C+Francis+J%3BO%27Brien%2C+T+P%3BRoeder%2C+William+P%3BHuddleston%2C+Lisa+L%3BBauman%2C+William+H%2C+III%3BJedlovec%2C+Gary+J&rft.aulast=Merceret&rft.aufirst=Francis&rft.date=2013-11-01&rft.volume=11&rft.issue=11&rft.spage=637&rft.isbn=&rft.btitle=&rft.title=Space+Weather&rft.issn=1542-7390&rft_id=info:doi/10.1002%2Fswe.20099 L2 - http://www.agu.org/journals/sw/?content=about LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 9 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2014-07-04 N1 - SubjectsTermNotLitGenreText - interplanetary space; monitoring; programs; remote sensing; research; satellite methods; space shuttles; space weather; technology DO - http://dx.doi.org/10.1002/swe.20099 ER - TY - JOUR T1 - Characteristics of pebble- and cobble-sized clasts along the Curiosity Rover traverse from Bradbury Landing to Rocknest AN - 1524609648; 2014-032013 AB - We have assessed the characteristics of clasts along Curiosity's traverse to shed light on the processes important in the genesis, modification, and transportation of surface materials. Pebble- to cobble-sized clasts at Bradbury Landing, and subsequently along Curiosity's traverse to Yellowknife Bay, reflect a mixing of two end-member transport mechanisms. The general clast population likely represents material deposited via impact processes, including meteorite fragments, ejecta from distant craters, and impactites consisting of shocked and shock-melted materials from within Gale Crater, which resulted predominantly in larger, angular clasts. A subset of rounded pebble-sized clasts has likely been modified by intermittent alluvial or fluvial processes. The morphology of this rounded clast population indicates that water was a more important transporting agent here than at other Mars sites that have been studied in situ. Finally, we identified populations of basalt clasts and porphyritic clasts of undetermined composition by their morphologic and textural characteristics; basalts are confirmed by geochemical data provided by ChemCam. Abstract Copyright (2013), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Yingst, R A AU - Kah, L C AU - Palucis, M AU - Williams, R M E AU - Garvin, J AU - Bridges, J C AU - Bridges, N AU - Deen, R G AU - Farmer, J AU - Gasnault, O AU - Goetz, W AU - Hamilton, V E AU - Hipkin, V AU - Jensen, J K AU - King, P L AU - Koefoed, A AU - Le Mouelic, S P AU - Madsen, M B AU - Mangold, N AU - Martinez-Frias, J AU - Maurice, S AU - McCartney, E M AU - Newsom, H AU - Pariser, O AU - Sautter, V H AU - Wiens, R C Y1 - 2013/11// PY - 2013 DA - November 2013 SP - 2361 EP - 2380 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 11 SN - 2169-9097, 2169-9097 KW - volcanic rocks KW - impact features KW - igneous rocks KW - pebbles KW - Mars KW - Rocknest landing site KW - landing sites KW - meteorites KW - transport KW - Curiosity Rover KW - basalts KW - sediments KW - ChemCam KW - interpretation KW - chemical composition KW - Yellowknife Bay KW - sediment transport KW - clastic sediments KW - textures KW - sedimentation KW - Bradbury landing site KW - clasts KW - porphyry KW - fluvial sedimentation KW - ejecta KW - terrestrial planets KW - cobbles KW - planets KW - fluvial features KW - impact craters KW - alluvium KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1524609648?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Characteristics+of+pebble-+and+cobble-sized+clasts+along+the+Curiosity+Rover+traverse+from+Bradbury+Landing+to+Rocknest&rft.au=Yingst%2C+R+A%3BKah%2C+L+C%3BPalucis%2C+M%3BWilliams%2C+R+M+E%3BGarvin%2C+J%3BBridges%2C+J+C%3BBridges%2C+N%3BDeen%2C+R+G%3BFarmer%2C+J%3BGasnault%2C+O%3BGoetz%2C+W%3BHamilton%2C+V+E%3BHipkin%2C+V%3BJensen%2C+J+K%3BKing%2C+P+L%3BKoefoed%2C+A%3BLe+Mouelic%2C+S+P%3BMadsen%2C+M+B%3BMangold%2C+N%3BMartinez-Frias%2C+J%3BMaurice%2C+S%3BMcCartney%2C+E+M%3BNewsom%2C+H%3BPariser%2C+O%3BSautter%2C+V+H%3BWiens%2C+R+C&rft.aulast=Yingst&rft.aufirst=R&rft.date=2013-11-01&rft.volume=118&rft.issue=11&rft.spage=2361&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2F2013JE004435 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 - 2014-01-01 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - alluvium; basalts; Bradbury landing site; ChemCam; chemical composition; clastic sediments; clasts; cobbles; Curiosity Rover; ejecta; fluvial features; fluvial sedimentation; igneous rocks; impact craters; impact features; interpretation; landing sites; Mars; meteorites; pebbles; planets; porphyry; Rocknest landing site; sediment transport; sedimentation; sediments; terrestrial planets; textures; transport; volcanic rocks; Yellowknife Bay DO - http://dx.doi.org/10.1002/2013JE004435 ER - TY - JOUR T1 - Dawn completes its mission at 4 Vesta AN - 1520105555; 2014-030357 AB - The Dawn mission was designed to test our hypothesis about the origin and evolution of the early solar system by visiting the largest differentiated basaltic asteroid, 4 Vesta, believed to be a survivor from the earliest times of rocky body formation. Observations from orbit show that Vesta is the parent body of the Howardite, Eucrite, Diogenite meteorites. Vesta has an iron core and a eucritic-diogenitic crust. Its surface is characterized by abundant impact craters but with no evident volcanic features. It has two ancient impact basins in the southern hemisphere that are associated with circum-planetary troughs. The northern hemisphere is the more heavily cratered and contains the oldest terrains. The surface of Vesta is diverse, with north-south and east-west dichotomies in the eucrite-to-diogenite ratio. Its surface contains both very bright and very dark material, and its color varies strongly from region to region. Both the mineralogical and the elemental compositions agree with that expected for the HED parent body. Significant OH or H may be present in the upper crust and the presence of pits in "fresh" craters is consistent with the devolatilization of the surface after a collision either brought to or tapped a source of water on Vesta. The presence of dark material on the surface of Vesta suggests efficient transport pathways for organic material, and the mixing of the dark material with the more pristine pyroxene explains the varying albedo across the surface. Vesta has proven to be a reliable witness to the formation of the solar system. JF - Meteoritics & Planetary Science AU - Russell, Christopher T AU - Raymond, Carol A AU - Jaumann, Ralf AU - McSween, H Y AU - De Sanctis, M Cristina AU - Nathues, A AU - Prettyman, Thomas H AU - Ammannito, Eleonora AU - Reddy, Vishnu AU - Preusker, F AU - O'Brien, D P AU - Marchi, Simone AU - Denevi, B W AU - Buczkowski, D L AU - Pieters, Carle M AU - McCord, Thomas B AU - Li, J Y AU - Mittlefehldt, David W AU - Combe, Jean-Philippe AU - Williams, D A AU - Hiesinger, Harald AU - Yingst, R A AU - Polanskey, Carol A AU - Joy, S P Y1 - 2013/11// PY - 2013 DA - November 2013 SP - 2076 EP - 2089 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 11 SN - 1086-9379, 1086-9379 KW - silicates KW - albedo KW - stony meteorites KW - impact features KW - asteroids KW - mantle KW - olivine group KW - Dawn Mission KW - meteorites KW - pyroxene group KW - mineral composition KW - mixing KW - olivine KW - surface features KW - orthosilicates KW - chondrites KW - chemical composition KW - chain silicates KW - Vesta Asteroid KW - parent bodies KW - HED meteorites KW - diogenite KW - carbonaceous chondrites KW - achondrites KW - nesosilicates KW - hydroxyl ion KW - volatiles KW - hydrogen KW - planetary interiors KW - eucrite KW - sheet silicates KW - impact craters KW - core KW - regolith 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/1520105555?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Dawn+completes+its+mission+at+4+Vesta&rft.au=Russell%2C+Christopher+T%3BRaymond%2C+Carol+A%3BJaumann%2C+Ralf%3BMcSween%2C+H+Y%3BDe+Sanctis%2C+M+Cristina%3BNathues%2C+A%3BPrettyman%2C+Thomas+H%3BAmmannito%2C+Eleonora%3BReddy%2C+Vishnu%3BPreusker%2C+F%3BO%27Brien%2C+D+P%3BMarchi%2C+Simone%3BDenevi%2C+B+W%3BBuczkowski%2C+D+L%3BPieters%2C+Carle+M%3BMcCord%2C+Thomas+B%3BLi%2C+J+Y%3BMittlefehldt%2C+David+W%3BCombe%2C+Jean-Philippe%3BWilliams%2C+D+A%3BHiesinger%2C+Harald%3BYingst%2C+R+A%3BPolanskey%2C+Carol+A%3BJoy%2C+S+P&rft.aulast=Russell&rft.aufirst=Christopher&rft.date=2013-11-01&rft.volume=48&rft.issue=11&rft.spage=2076&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12091 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 54 N1 - PubXState - AR N1 - Document feature - illus. incl. 1 table, sketch maps N1 - Last updated - 2014-05-01 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - achondrites; albedo; asteroids; carbonaceous chondrites; chain silicates; chemical composition; chondrites; core; crust; Dawn Mission; diogenite; eucrite; HED meteorites; hydrogen; hydroxyl ion; impact craters; impact features; mantle; meteorites; mineral composition; mixing; nesosilicates; olivine; olivine group; orthosilicates; parent bodies; planetary interiors; pyroxene group; regolith; sheet silicates; silicates; stony meteorites; surface features; Vesta Asteroid; volatiles DO - http://dx.doi.org/10.1111/maps.12091 ER - TY - JOUR T1 - Distribution of iron on Vesta AN - 1520105541; 2014-030350 AB - We have completed a mapping study of 7.6 MeV gamma rays produced by neutron capture by Fe at the surface of the main belt asteroid 4 Vesta as measured by the bismuth germanate scintillator of the Gamma Ray and Neutron Detector (GRaND) on the Dawn spacecraft. The procedures used to determine Fe counting rates are presented, along with a global map, constituting the necessary initial step to quantify Fe abundances. While the final calibration of orbital data to absolute concentrations has not been determined, the range of fully corrected Fe counting rates is compared with that of Fe in howardites. We find that the global distribution of corrected Fe counting rates is generally consistent with mineralogy and composition determined independently by other instruments on the Dawn spacecraft, including measurements of pyroxene absorption bands by the Visible and Infrared Spectrometer and Framing Camera, and an index of diogenitic materials provided by neutron absorption measurements by GRaND. In addition, there is a distinctive low Fe region in the western hemisphere that was not reported by reflectance or optical observations, possibly indicating the presence of a cumulate eucrite component in Vesta's regolith. Abstract Copyright The Meteoritical Society, 2013. JF - Meteoritics & Planetary Science AU - Yamashita, Naoyuki AU - Prettyman, Thomas H AU - Mittlefehldt, David W AU - Toplis, Michael J AU - McCoy, Timothy J AU - Beck, Andrew W AU - Reedy, Robert C AU - Feldman, William C AU - Lawrence, David J AU - Peplowski, Patrick N AU - Forni, O AU - Mizzon, Hugau AU - Raymond, Carol A AU - Russell, Christopher T Y1 - 2013/11// PY - 2013 DA - November 2013 SP - 2237 EP - 2251 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 11 SN - 1086-9379, 1086-9379 KW - silicates KW - stony meteorites KW - asteroids KW - Rheasilvia Basin KW - data processing KW - GRaND instrument KW - mapping KW - calibration KW - Dawn Mission KW - iron KW - meteorites KW - pyroxene group KW - howardite KW - cumulates KW - gamma-ray spectra KW - cosmic rays KW - spectra KW - orbital observations KW - uncertainty KW - chain silicates KW - Vesta Asteroid KW - statistical analysis KW - diogenite KW - distribution KW - achondrites KW - Gamma Ray and Neutron Detector KW - metals KW - eucrite KW - corrections 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/1520105541?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Distribution+of+iron+on+Vesta&rft.au=Yamashita%2C+Naoyuki%3BPrettyman%2C+Thomas+H%3BMittlefehldt%2C+David+W%3BToplis%2C+Michael+J%3BMcCoy%2C+Timothy+J%3BBeck%2C+Andrew+W%3BReedy%2C+Robert+C%3BFeldman%2C+William+C%3BLawrence%2C+David+J%3BPeplowski%2C+Patrick+N%3BForni%2C+O%3BMizzon%2C+Hugau%3BRaymond%2C+Carol+A%3BRussell%2C+Christopher+T&rft.aulast=Yamashita&rft.aufirst=Naoyuki&rft.date=2013-11-01&rft.volume=48&rft.issue=11&rft.spage=2237&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12139 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 61 N1 - PubXState - AR N1 - Document feature - illus. incl. geol. sketch maps N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-05-01 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - achondrites; asteroids; calibration; chain silicates; corrections; cosmic rays; cumulates; data processing; Dawn Mission; diogenite; distribution; eucrite; Gamma Ray and Neutron Detector; gamma-ray spectra; GRaND instrument; howardite; iron; mapping; metals; meteorites; orbital observations; pyroxene group; regolith; Rheasilvia Basin; silicates; spectra; statistical analysis; stony meteorites; uncertainty; Vesta Asteroid DO - http://dx.doi.org/10.1111/maps.12139 ER - TY - JOUR T1 - The volatile content of Vesta; clues from apatite in eucrites AN - 1520105395; 2014-030344 AB - Apatite was analyzed by electron microprobe in 3 cumulate and 10 basaltic eucrites. Eucritic apatite is fluorine-rich with minor chlorine and hydroxyl (calculated by difference). We confirmed the hydroxyl content by measuring hydroxyl directly in apatites from three representative eucrites using secondary ionization mass spectroscopy. Overall, most eucritic apatites resemble fluorine-rich lunar mare apatites, but intriguing OH- and Cl-rich apatites suggest a role for water and/or hydrothermal fluids in the Vestan interior or on other related differentiated asteroids. Most late-stage apatite found in mesostasis has little hydroxyl or chlorine and is thought to have crystallized from a degassed magma; however, several apatites exhibit atypical compositions and/or textural characteristics. For example, the isotopically anomalous basaltic eucrite Pasamonte has apatite in the mesostasis with significant OH. Apatites in Juvinas also have significant OH and occur as veinlets crosscutting silicates. Euhedral apatites in the Moore County cumulate eucrite occur as inclusions in pyroxene and are also hydroxyl-rich (0.62 wt% OH). The OH was confirmed by SIMS analysis and this apatite clearly points to the presence of water, at least locally, in the Vestan interior. Portions of Elephant Moraine (EET) 90020 have large and abundant apatites, which may be the product of apatite accumulation in a zone of melt-rock reaction. Relatively chlorine-rich apatites occur in basaltic eucrite Graves Nunataks (GRA) 98098 (approximately 1 wt% Cl). Particularly striking is the compositional similarity between apatite in GRA 98098 and apatites in lunar KREEP, which may indicate the presence of residual magmas from an asteroid-wide magma ocean on Vesta. Abstract Copyright The Meteoritical Society, 2013. JF - Meteoritics & Planetary Science AU - Sarafian, Adam Robert AU - Roden, Michael F AU - Patino-Douce, Alberto E Y1 - 2013/11// PY - 2013 DA - November 2013 SP - 2135 EP - 2154 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 11 SN - 1086-9379, 1086-9379 KW - volcanic rocks KW - stony meteorites KW - ion probe data KW - asteroids KW - igneous rocks KW - EET 90020 KW - halogens KW - mass spectra KW - Elephant Moraine Meteorites KW - electron probe data KW - meteorites KW - Pasamonte Meteorite KW - fluorine KW - cumulates KW - basalts KW - spectra KW - water KW - chlorine KW - apatite KW - Vesta Asteroid KW - Juvinas Meteorite KW - phosphates KW - GRA 98098 KW - achondrites KW - hydroxyl ion KW - volatiles KW - KREEP KW - Raman spectra KW - Graves Nunataks Meteorites KW - eucrite KW - Moore County Meteorite KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1520105395?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+volatile+content+of+Vesta%3B+clues+from+apatite+in+eucrites&rft.au=Sarafian%2C+Adam+Robert%3BRoden%2C+Michael+F%3BPatino-Douce%2C+Alberto+E&rft.aulast=Sarafian&rft.aufirst=Adam&rft.date=2013-11-01&rft.volume=48&rft.issue=11&rft.spage=2135&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12124 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 98 N1 - PubXState - AR N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2014-05-01 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - achondrites; apatite; asteroids; basalts; chlorine; cumulates; EET 90020; electron probe data; Elephant Moraine Meteorites; eucrite; fluorine; GRA 98098; Graves Nunataks Meteorites; halogens; hydroxyl ion; igneous rocks; ion probe data; Juvinas Meteorite; KREEP; mass spectra; meteorites; Moore County Meteorite; Pasamonte Meteorite; phosphates; Raman spectra; spectra; stony meteorites; Vesta Asteroid; volatiles; volcanic rocks; water DO - http://dx.doi.org/10.1111/maps.12124 ER - TY - JOUR T1 - Lithologic mapping of HED terrains on Vesta using Dawn Framing Camera color data AN - 1520104909; 2014-030348 AB - The surface composition of Vesta, the most massive intact basaltic object in the asteroid belt, is interesting because it provides us with an insight into magmatic differentiation of planetesimals that eventually coalesced to form the terrestrial planets. The distribution of lithologic and compositional units on the surface of Vesta provides important constraints on its petrologic evolution, impact history, and its relationship with vestoids and howardite-eucrite-diogenite (HED) meteorites. Using color parameters (band tilt and band curvature) originally developed for analyzing lunar data, we have identified and mapped HED terrains on Vesta in Dawn Framing Camera (FC) color data. The average color spectrum of Vesta is identical to that of howardite regions, suggesting an extensive mixing of surface regolith due to impact gardening over the course of solar system history. Our results confirm the hemispherical dichotomy (east-west and north-south) in albedo/color/composition that has been observed by earlier studies. The presence of diogenite-rich material in the southern hemisphere suggests that it was excavated during the formation of the Rheasilvia and Veneneia basins. Our lithologic mapping of HED regions provides direct evidence for magmatic evolution of Vesta with diogenite units in Rheasilvia forming the lower crust of a differentiated object. Abstract Copyright The Meteoritical Society, 2013. JF - Meteoritics & Planetary Science AU - Thangjam, Guneshwar AU - Reddy, Vishnu AU - Le Corre, Lucille AU - Nathues, Andreas AU - Sierks, Holger AU - Hiesinger, Harald AU - Li, Jian-Yang AU - Sanchez, Juan A AU - Russell, Christopher T AU - Gaskell, Robert AU - Raymond, Carol A Y1 - 2013/11// PY - 2013 DA - November 2013 SP - 2199 EP - 2210 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 11 SN - 1086-9379, 1086-9379 KW - silicates KW - albedo KW - magmatic differentiation KW - imagery KW - Dawn Framing Camera KW - stony meteorites KW - asteroids KW - Rheasilvia Basin KW - data processing KW - mapping KW - planetesimals KW - Dawn Mission KW - iron KW - multispectral analysis KW - meteorites KW - pyroxene group KW - howardite KW - mixing KW - color imagery KW - chain silicates KW - Vesta Asteroid KW - Veneneia Basin KW - HED meteorites KW - diogenite KW - distribution KW - achondrites KW - ferrous iron KW - terrestrial planets KW - planets KW - metals KW - eucrite KW - reflectance 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/1520104909?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Lithologic+mapping+of+HED+terrains+on+Vesta+using+Dawn+Framing+Camera+color+data&rft.au=Thangjam%2C+Guneshwar%3BReddy%2C+Vishnu%3BLe+Corre%2C+Lucille%3BNathues%2C+Andreas%3BSierks%2C+Holger%3BHiesinger%2C+Harald%3BLi%2C+Jian-Yang%3BSanchez%2C+Juan+A%3BRussell%2C+Christopher+T%3BGaskell%2C+Robert%3BRaymond%2C+Carol+A&rft.aulast=Thangjam&rft.aufirst=Guneshwar&rft.date=2013-11-01&rft.volume=48&rft.issue=11&rft.spage=2199&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12132 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 73 N1 - PubXState - AR N1 - Document feature - illus. incl. geol. sketch maps N1 - Last updated - 2014-05-01 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - achondrites; albedo; asteroids; chain silicates; color imagery; data processing; Dawn Framing Camera; Dawn Mission; diogenite; distribution; eucrite; ferrous iron; HED meteorites; howardite; imagery; iron; magmatic differentiation; mapping; metals; meteorites; mixing; multispectral analysis; planetesimals; planets; pyroxene group; reflectance; regolith; Rheasilvia Basin; silicates; stony meteorites; terrestrial planets; Veneneia Basin; Vesta Asteroid DO - http://dx.doi.org/10.1111/maps.12132 ER - TY - JOUR T1 - Vesta's mineralogical composition as revealed by the visible and infrared spectrometer on Dawn AN - 1520104894; 2014-030346 AB - The Dawn spacecraft mission has provided extensive new and detailed data on Vesta that confirm and strengthen the Vesta-howardite-eucrite-diogenite (HED) meteorite link and the concept that Vesta is differentiated, as derived from earlier telescopic observations. Here, we present results derived by newly calibrated spectra of Vesta. The comparison between data from the Dawn imaging spectrometer-VIR-and the different class of HED meteorites shows that average spectrum of Vesta resembles howardite spectra. Nevertheless, the Vesta spectra at high spatial resolution reveal variations in the distribution of HED-like mineralogies on the asteroid. The data have been used to derive HED distribution on Vesta, reported in Ammannito et al. (2013), and to compute the average Vestan spectra of the different HED lithologies, reported here. The spectra indicate that, not only are all the different HED lithologies present on Vesta, but also carbonaceous chondritic material, which constitutes the most abundant inclusion type found in howardites, is widespread. However, the hydration feature used to identify carbonaceous chondrite material varies significantly on Vesta, revealing different band shapes. The characteristic of these hydration features cannot be explained solely by infalling of carbonaceous chondrite meteorites and other possible origins must be considered. The relative proportion of HEDs on Vesta's surface is computed, and results show that most of the vestan surface is compatible with eucrite-rich howardites and/or cumulate or polymict eucrites. A very small percentage of surface is covered by diogenite, and basaltic eucrite terrains are relatively few compared with the abundance of basaltic eucrites in the HED suite. The largest abundance of diogenitic material is found in the Rheasilvia region, a deep basin, where it clearly occurs below a basaltic upper crust. However, diogenite is also found elsewhere; although the depth to diogenite is consistent with one magma ocean model, its lateral extent is not well constrained. Abstract Copyright The Meteoritical Society, 2013. JF - Meteoritics & Planetary Science AU - Sanctis, Maria Cristina AU - Ammannito, Eleonora AU - Capria, M Teresa AU - Capaccioni, Fabrizio AU - Combe, Jean-Philippe AU - Frigeri, Alessandro AU - Longobardo, Andrea AU - Magni, Gianfranco AU - Marchi, Simone AU - McCord, Thomas B AU - Palomba, Ernesto AU - Tosi, Federico AU - Zambon, Francesca AU - Carraro, Francesco AU - Fonte, Sergio AU - Li, Y J AU - McFadden, Lucy A AU - Mittlefehldt, David W AU - Pieters, Carle M AU - Jaumann, Ralf AU - Stephan, Katrin AU - Raymond, Carol A AU - Russell, Christopher T Y1 - 2013/11// PY - 2013 DA - November 2013 SP - 2166 EP - 2184 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 11 SN - 1086-9379, 1086-9379 KW - silicates KW - volcanic rocks KW - stony meteorites KW - asteroids KW - igneous rocks KW - Rheasilvia Basin KW - Dawn Mission KW - meteorites KW - photometry KW - pyroxene group KW - mineral composition KW - howardite KW - cumulates KW - basalts KW - chondrites KW - chain silicates KW - magma oceans KW - Vesta Asteroid KW - HED meteorites KW - differentiation KW - diogenite KW - carbonaceous chondrites KW - achondrites KW - weathering KW - depth KW - hydration KW - space weathering KW - eucrite 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/1520104894?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Vesta%27s+mineralogical+composition+as+revealed+by+the+visible+and+infrared+spectrometer+on+Dawn&rft.au=Sanctis%2C+Maria+Cristina%3BAmmannito%2C+Eleonora%3BCapria%2C+M+Teresa%3BCapaccioni%2C+Fabrizio%3BCombe%2C+Jean-Philippe%3BFrigeri%2C+Alessandro%3BLongobardo%2C+Andrea%3BMagni%2C+Gianfranco%3BMarchi%2C+Simone%3BMcCord%2C+Thomas+B%3BPalomba%2C+Ernesto%3BTosi%2C+Federico%3BZambon%2C+Francesca%3BCarraro%2C+Francesco%3BFonte%2C+Sergio%3BLi%2C+Y+J%3BMcFadden%2C+Lucy+A%3BMittlefehldt%2C+David+W%3BPieters%2C+Carle+M%3BJaumann%2C+Ralf%3BStephan%2C+Katrin%3BRaymond%2C+Carol+A%3BRussell%2C+Christopher+T&rft.aulast=Sanctis&rft.aufirst=Maria&rft.date=2013-11-01&rft.volume=48&rft.issue=11&rft.spage=2166&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12138 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 86 N1 - PubXState - AR N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2014-05-01 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - achondrites; asteroids; basalts; carbonaceous chondrites; chain silicates; chondrites; cumulates; Dawn Mission; depth; differentiation; diogenite; eucrite; HED meteorites; howardite; hydration; igneous rocks; magma oceans; meteorites; mineral composition; photometry; pyroxene group; regolith; Rheasilvia Basin; silicates; space weathering; stony meteorites; Vesta Asteroid; volcanic rocks; weathering DO - http://dx.doi.org/10.1111/maps.12138 ER - TY - JOUR T1 - Vestan lithologies mapped by the visual and infrared spectrometer on Dawn AN - 1520104728; 2014-030347 AB - We present global lithological maps of the Vestan surface based on Dawn mission's Visible InfraRed (VIR) Spectrometer acquisitions with a spatial sampling of 200 m. The maps confirm the results obtained with the data set acquired by VIR with a spatial sampling of 700 m, that the reflectance spectra of Vesta's surface are dominated by pyroxene absorptions that can be interpreted within the context of the distribution of howardites, eucrites, and diogenites (HEDs). The maps also partially agree with the ground and Hubble Space Telescope observations: they confirm the background surface being an assemblage of howardite or polymict eucrite, as well as the location of a diogenitic-rich spot; however, there is no evidence of extended olivine-rich regions in the equatorial latitudes. Diogenite is revealed on the Rheasilvia basin floor, indicating that material of the lower crust/mantle was exposed. VIR also detected diogenites along the scarp of Matronalia Rupes, and the rims of Severina and a nearby, unnamed crater, and as ejecta of Antonia crater. The diogenite distribution is fully consistent with petrological constraints; although the mapped distribution does not provide unambiguous constraints, it favors the hypothesis of a magma ocean. Abstract Copyright The Meteoritical Society, 2013. JF - Meteoritics & Planetary Science AU - Ammannito, Eleonora AU - Sanctis, Maria Cristina AU - Capaccioni, Fabrizio AU - Capria, M Teresa AU - Carraro, Francesco AU - Combe, Jean-Philippe AU - Fonte, Sergio AU - Frigeri, Alessandro AU - Joy, Steven P AU - Longobardo, Andrea AU - Magni, Gianfranco AU - Marchi, Simone AU - McCord, Thomas B AU - McFadden, Lucy A AU - McSween, Harry Y AU - Palomba, Ernesto AU - Pieters, Carle M AU - Polanskey, Carol A AU - Raymond, Carol A AU - Sunshine, Jessica M AU - Tosi, Federico AU - Zambon, Francesca AU - Russell, Christopher T Y1 - 2013/11// PY - 2013 DA - November 2013 SP - 2185 EP - 2198 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 11 SN - 1086-9379, 1086-9379 KW - silicates KW - stony meteorites KW - asteroids KW - Rheasilvia Basin KW - optical spectra KW - mantle KW - mapping KW - Dawn Mission KW - infrared spectra KW - meteorites KW - Antonia Crater KW - pyroxene group KW - howardite KW - spectra KW - lower crust KW - chain silicates KW - magma oceans KW - Severina Crater KW - Vesta Asteroid KW - HED meteorites KW - Matronalia Rupes KW - diogenite KW - distribution KW - achondrites KW - eucrite 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/1520104728?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Vestan+lithologies+mapped+by+the+visual+and+infrared+spectrometer+on+Dawn&rft.au=Ammannito%2C+Eleonora%3BSanctis%2C+Maria+Cristina%3BCapaccioni%2C+Fabrizio%3BCapria%2C+M+Teresa%3BCarraro%2C+Francesco%3BCombe%2C+Jean-Philippe%3BFonte%2C+Sergio%3BFrigeri%2C+Alessandro%3BJoy%2C+Steven+P%3BLongobardo%2C+Andrea%3BMagni%2C+Gianfranco%3BMarchi%2C+Simone%3BMcCord%2C+Thomas+B%3BMcFadden%2C+Lucy+A%3BMcSween%2C+Harry+Y%3BPalomba%2C+Ernesto%3BPieters%2C+Carle+M%3BPolanskey%2C+Carol+A%3BRaymond%2C+Carol+A%3BSunshine%2C+Jessica+M%3BTosi%2C+Federico%3BZambon%2C+Francesca%3BRussell%2C+Christopher+T&rft.aulast=Ammannito&rft.aufirst=Eleonora&rft.date=2013-11-01&rft.volume=48&rft.issue=11&rft.spage=2185&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12192 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 68 N1 - PubXState - AR N1 - Document feature - illus. N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-05-01 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - achondrites; Antonia Crater; asteroids; chain silicates; crust; Dawn Mission; diogenite; distribution; eucrite; HED meteorites; howardite; infrared spectra; lower crust; magma oceans; mantle; mapping; Matronalia Rupes; meteorites; optical spectra; pyroxene group; Rheasilvia Basin; Severina Crater; silicates; spectra; stony meteorites; Vesta Asteroid DO - http://dx.doi.org/10.1111/maps.12192 ER - TY - JOUR T1 - Mixing relations of the howardite-eucrite-diogenite suite; a new statistical approach of independent component analysis for the Dawn Mission AN - 1520104595; 2014-030353 AB - Dawn has recently revealed that the surface of Vesta is heterogeneously covered by polymictic regoliths represented by mixtures of howardite, eucrite, and diogenite (HED) meteorites. Mixing relations of the HED suite are examined here using a new computational statistical approach of independent component analysis (ICA). We performed eight-component ICA (Si, Ti, Al, Cr, Fe, Mn, Mg, and Ca) for 209 HED bulk-rock compositions. The ICA results indicate that the HED bulk-rock compositions can be reduced into three independent components (IC) and these IC vectors can reasonably explain compositional variation, petrographic observations, and the mixing relations of the HED suite. The IC-1 vector represents a eucrite variation that extends from cumulate eucrite toward main-group (MG) and incompatible-element enriched eucrites. The IC-2 vector represents a compositional variation of howardites that extends from diogenites to MG-eucrites, indicating the well-known two-component mixing trend of diogenite and eucrite. The IC-3 vector represents a compositional variation defined by diogenites and olivine-bearing diogenites, suggesting mixing of olivine and orthopyroxene. Among the three ICs, the diogenite-eucrite mixing trend IC-2 is most statistically robust and dominates the compositional variations of the HED suite. Our ICA study further indicates that the combination of only three elements (Mg, Si, and Fe) approximates the eight-component ICA model, and that the limited number of resolvable gamma -ray spectra obtained by the Dawn mission possibly discriminates olivine lithologies from the olivine-free regolith breccias on the surface of Vesta. Abstract Copyright The Meteoritical Society, 2013. JF - Meteoritics & Planetary Science AU - Usui, Tomohiro AU - Iwamori, Hikaru Y1 - 2013/11// PY - 2013 DA - November 2013 SP - 2289 EP - 2299 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 11 SN - 1086-9379, 1086-9379 KW - silicates KW - magnesium KW - stony meteorites KW - asteroids KW - olivine group KW - silicon KW - Dawn Mission KW - iron KW - meteorites KW - pyroxene group KW - howardite KW - cumulates KW - mixing KW - olivine KW - orthosilicates KW - heterogeneity KW - chemical composition KW - chain silicates KW - alkaline earth metals KW - independent component analysis KW - Vesta Asteroid KW - HED meteorites KW - statistical analysis KW - diogenite KW - achondrites KW - nesosilicates KW - metals KW - eucrite KW - orthopyroxene 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/1520104595?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Mixing+relations+of+the+howardite-eucrite-diogenite+suite%3B+a+new+statistical+approach+of+independent+component+analysis+for+the+Dawn+Mission&rft.au=Usui%2C+Tomohiro%3BIwamori%2C+Hikaru&rft.aulast=Usui&rft.aufirst=Tomohiro&rft.date=2013-11-01&rft.volume=48&rft.issue=11&rft.spage=2289&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12205 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 51 N1 - PubXState - AR N1 - Document feature - illus. N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-05-01 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - achondrites; alkaline earth metals; asteroids; chain silicates; chemical composition; cumulates; Dawn Mission; diogenite; eucrite; HED meteorites; heterogeneity; howardite; independent component analysis; iron; magnesium; metals; meteorites; mixing; nesosilicates; olivine; olivine group; orthopyroxene; orthosilicates; pyroxene group; regolith; silicates; silicon; statistical analysis; stony meteorites; Vesta Asteroid DO - http://dx.doi.org/10.1111/maps.12205 ER - TY - JOUR T1 - Challenges in detecting olivine on the surface of 4 Vesta AN - 1520103984; 2014-030345 AB - Identifying and mapping olivine on asteroid 4 Vesta are important components to understanding differentiation on that body, which is one of the objectives of the Dawn mission. Harzburgitic diogenites are the main olivine-bearing lithology in the howardite-eucrite-diogenite (HED) meteorites, a group of samples thought to originate from Vesta. Here, we examine all the Antarctic harzburgites and estimate that, on scales resolvable by Dawn, olivine abundances in putative harzburgite exposures on the surface of Vesta are likely at best in the 10-30% range, but probably lower due to impact mixing. We examine the visible/near-infrared spectra of two harzburgitic diogenites representative of the 10-30% olivine range and demonstrate that they are spectrally indistinguishable from orthopyroxenitic diogenites, the dominant diogenitic lithology in the HED group. This suggests that the visible/near-infrared spectrometer onboard Dawn (VIR) will be unable to resolve harzburgites from orthopyroxenites on the surface of Vesta, which may explain the current lack of identification of harzburgitic diogenite on Vesta. Abstract Copyright Published 2013. This article is a U.S. Government work and is in the public domain in the USA. JF - Meteoritics & Planetary Science AU - Beck, Andrew W AU - McCoy, Timothy J AU - Sunshine, Jessica M AU - Viviano, Christina E AU - Corrigan, Catherine M AU - Hiroi, Takahiro AU - Mayne, Rhiannon G Y1 - 2013/11// PY - 2013 DA - November 2013 SP - 2155 EP - 2165 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 11 SN - 1086-9379, 1086-9379 KW - silicates KW - near-infrared spectra KW - stony meteorites KW - asteroids KW - igneous rocks KW - optical spectra KW - olivine group KW - harzburgite KW - Dawn Mission KW - meteorites KW - plutonic rocks KW - olivine KW - orthosilicates KW - spectra KW - Vesta Asteroid KW - HED meteorites KW - grain size KW - diogenite KW - achondrites KW - ultramafics KW - nesosilicates KW - detection KW - homogeneity KW - peridotites KW - eucrite KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1520103984?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Challenges+in+detecting+olivine+on+the+surface+of+4+Vesta&rft.au=Beck%2C+Andrew+W%3BMcCoy%2C+Timothy+J%3BSunshine%2C+Jessica+M%3BViviano%2C+Christina+E%3BCorrigan%2C+Catherine+M%3BHiroi%2C+Takahiro%3BMayne%2C+Rhiannon+G&rft.aulast=Beck&rft.aufirst=Andrew&rft.date=2013-11-01&rft.volume=48&rft.issue=11&rft.spage=2155&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12160 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 36 N1 - PubXState - AR N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2014-05-01 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - achondrites; asteroids; Dawn Mission; detection; diogenite; eucrite; grain size; harzburgite; HED meteorites; homogeneity; igneous rocks; meteorites; near-infrared spectra; nesosilicates; olivine; olivine group; optical spectra; orthosilicates; peridotites; plutonic rocks; silicates; spectra; stony meteorites; ultramafics; Vesta Asteroid DO - http://dx.doi.org/10.1111/maps.12160 ER - TY - JOUR T1 - Composition and petrology of HED polymict breccias; the regolith of (4) Vesta AN - 1520103954; 2014-030343 AB - We have done petrologic and compositional studies on a suite of polymict eucrites and howardites to better understand regolith processes on their parent asteroid, which we accept is (4) Vesta. Taking into account noble gas results from companion studies, we interpret five howardites to represent breccias assembled from the true regolith: Elephant Moraine (EET) 87513, Grosvenor Mountains (GRO) 95535, GRO 95602, Lewis Cliff (LEW) 85313, and Meteorite Hills (MET) 00423. We suggest that EET 87503 is paired with EET 87513, and thus is also regolithic. Pecora Escarpment (PCA) 02066 is dominated by melt-matrix clasts, which may have been formed from true regolith by impact melting. These meteorites display a range in eucrite:diogenite mixing ratio from 55:45 to 76:24. There is no correlation between degree of regolith character and Ni content. The Ni contents of howardite, eucrite, and diogenites (HEDs) are mostly controlled by the distribution of coarse chondritic clasts and metal grains, which in some cases resulted from individual, low-velocity accretion events, rather than extensive regolith gardening. Trace element compositions indicate that the mafic component of HED polymict breccias is mostly basalt similar to main-group eucrites; Stannern-trend basaltic debris is less common. Pyroxene compositions show that some trace element-rich howardites contain abundant debris from evolved basalts, and that cumulate gabbro debris is present in some breccias. The scale of heterogeneity varies considerably; regolithic howardite EET 87513 is more homogeneous than fragmental howardite Queen Alexandra Range (QUE) 97001. Individual samples of a given howardite can have different compositions even at roughly 5 g masses, indicating that obtaining representative meteorite compositions requires multiple or large samples. Abstract Copyright Published 2013. This article is a U.S. Government work and is in the public domain in the USA. JF - Meteoritics & Planetary Science AU - Mittlefehldt, David W AU - Herrin, Jason S AU - Quinn, Julie E AU - Mertzman, Stanley A AU - Cartwright, Julia A AU - Mertzman, Karen R AU - Peng, Zhan X Y1 - 2013/11// PY - 2013 DA - November 2013 SP - 2105 EP - 2134 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 11 SN - 1086-9379, 1086-9379 KW - PCA 02066 KW - Pecora Escarpment Meteorites KW - neutron activation analysis data KW - stony meteorites KW - asteroids KW - Lewis Cliff Meteorites KW - EET 87503 KW - mass spectra KW - Elephant Moraine Meteorites KW - meteorites KW - GRO 95602 KW - howardite KW - mixing KW - Meteorite Hills Meteorites KW - X-ray fluorescence spectra KW - spectra KW - chemical composition KW - EET 87513 KW - breccia KW - Vesta Asteroid KW - HED meteorites KW - diogenite KW - GRO 95535 KW - achondrites KW - MET 00423 KW - ICP mass spectra KW - LEW 85313 KW - metals KW - nickel KW - petrography KW - eucrite KW - polymict breccia KW - regolith KW - Grosvenor Mountains Meteorites KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1520103954?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Composition+and+petrology+of+HED+polymict+breccias%3B+the+regolith+of+%284%29+Vesta&rft.au=Mittlefehldt%2C+David+W%3BHerrin%2C+Jason+S%3BQuinn%2C+Julie+E%3BMertzman%2C+Stanley+A%3BCartwright%2C+Julia+A%3BMertzman%2C+Karen+R%3BPeng%2C+Zhan+X&rft.aulast=Mittlefehldt&rft.aufirst=David&rft.date=2013-11-01&rft.volume=48&rft.issue=11&rft.spage=2105&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12182 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 128 N1 - PubXState - AR N1 - Document feature - illus. incl. 3 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-05-01 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - achondrites; asteroids; breccia; chemical composition; diogenite; EET 87503; EET 87513; Elephant Moraine Meteorites; eucrite; GRO 95535; GRO 95602; Grosvenor Mountains Meteorites; HED meteorites; howardite; ICP mass spectra; LEW 85313; Lewis Cliff Meteorites; mass spectra; MET 00423; metals; Meteorite Hills Meteorites; meteorites; mixing; neutron activation analysis data; nickel; PCA 02066; Pecora Escarpment Meteorites; petrography; polymict breccia; regolith; spectra; stony meteorites; Vesta Asteroid; X-ray fluorescence spectra DO - http://dx.doi.org/10.1111/maps.12182 ER - TY - JOUR T1 - Constraints on Vesta's elemental composition; fast neutron measurements by Dawn's gamma ray and neutron detector AN - 1520103825; 2014-030352 AB - Surface composition information from Vesta is reported using fast neutron data collected by the gamma ray and neutron detector on the Dawn spacecraft. After correcting for variations due to hydrogen, fast neutrons show a compositional dynamic range and spatial variability that is consistent with variations in average atomic mass from howardite, eucrite, and diogenite (HED) meteorites. These data provide additional compositional evidence that Vesta is the parent body to HED meteorites. A subset of fast neutron data having lower statistical precision show spatial variations that are consistent with a 400 ppm variability in hydrogen concentrations across Vesta and supports the idea that Vesta's hydrogen is due to long-term delivery of carbonaceous chondrite material. Abstract Copyright (2013), The Authors. Meteoritics & Planetary Science published by Wiley Periodicals, Inc. on behalf of The Meteoritical Society. JF - Meteoritics & Planetary Science AU - Lawrence, David J AU - Peplowski, Patrick N AU - Prettyman, Thomas H AU - Feldman, William C AU - Bazell, David AU - Mittlefehldt, David W AU - Reedy, Robert C AU - Yamashita, Naoyuki Y1 - 2013/11// PY - 2013 DA - November 2013 SP - 2271 EP - 2288 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 11 SN - 1086-9379, 1086-9379 KW - magnesium KW - stony meteorites KW - asteroids KW - Rheasilvia Basin KW - data processing KW - GRaND instrument KW - Dawn Mission KW - iron KW - spatial distribution KW - meteorites KW - howardite KW - chondrites KW - chemical composition KW - fast neutrons KW - alkaline earth metals KW - precision KW - Vesta Asteroid KW - HED meteorites KW - statistical analysis KW - diogenite KW - carbonaceous chondrites KW - achondrites KW - Gamma Ray and Neutron Detector KW - neutrons KW - neutron probe data KW - metals KW - hydrogen KW - eucrite KW - corrections KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1520103825?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Constraints+on+Vesta%27s+elemental+composition%3B+fast+neutron+measurements+by+Dawn%27s+gamma+ray+and+neutron+detector&rft.au=Lawrence%2C+David+J%3BPeplowski%2C+Patrick+N%3BPrettyman%2C+Thomas+H%3BFeldman%2C+William+C%3BBazell%2C+David%3BMittlefehldt%2C+David+W%3BReedy%2C+Robert+C%3BYamashita%2C+Naoyuki&rft.aulast=Lawrence&rft.aufirst=David&rft.date=2013-11-01&rft.volume=48&rft.issue=11&rft.spage=2271&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12187 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 27 N1 - PubXState - AR N1 - Document feature - illus. N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-05-01 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - achondrites; alkaline earth metals; asteroids; carbonaceous chondrites; chemical composition; chondrites; corrections; data processing; Dawn Mission; diogenite; eucrite; fast neutrons; Gamma Ray and Neutron Detector; GRaND instrument; HED meteorites; howardite; hydrogen; iron; magnesium; metals; meteorites; neutron probe data; neutrons; precision; Rheasilvia Basin; spatial distribution; statistical analysis; stony meteorites; Vesta Asteroid DO - http://dx.doi.org/10.1111/maps.12187 ER - TY - JOUR T1 - The heating history of Vesta and the onset of differentiation AN - 1520103551; 2014-030355 AB - In this work, we study the link between the evolution of the internal structure of Vesta and thermal heating due to (super 26) Al and (super 60) Fe and long-lived radionuclides, taking into account the chemical differentiation of the body and the affinity of (super 26) Al with silicates. We explored several thermal and structural scenarios differing in the available strength of energy due to the radiogenic heating and in the postsintering macroporosity. By comparing them with the data supplied by the HEDs and the Dawn NASA mission, we use our results to constrain the accretion and differentiation time as well as the physical properties of the core. Differentiation takes place in all scenarios in which Vesta completes its accretion in <1.4 Ma after the injection of (super 26) Al into the solar nebula. In all those scenarios where Vesta completes its formation in <1 Ma from the injection of (super 26) Al, the degree of silicate melting reaches 100 vol% throughout the whole asteroid. If Vesta completed its formation between 1 and 1.4 Ma after (super 26) Al injection, the degree of silicate melting exceeds 50 vol% over the whole asteroid, but reaches 100 vol% only in the hottest, outermost part of the mantle in all scenarios where the porosity is lower than 5 vol%. If the formation of Vesta occurred later than 1.5 Ma after the injection of (super 26) Al, the degree of silicate melting is always lower than 50 vol% and is limited only to a small region of the asteroid. The radiation at the surface dominates the evolution of the crust, which ranges in thickness from 8 to about 30 km after 5 Ma: a layer about 3-20 km thick is composed of primitive unmelted chondritic material, while a layer of about 5-10 km is eucritic. Abstract Copyright The Meteoritical Society, 2013. JF - Meteoritics & Planetary Science AU - Formisano, Michelangelo AU - Federico, Costanzo AU - Turrini, Diego AU - Coradini, Angioletta AU - Capaccioni, Fabrizio AU - Sanctis, Maria Cristina AU - Pauselli, Cristina Y1 - 2013/11// PY - 2013 DA - November 2013 SP - 2316 EP - 2332 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 11 SN - 1086-9379, 1086-9379 KW - silicates KW - magmatic differentiation KW - stony meteorites KW - asteroids KW - isotopes KW - partial melting KW - mantle KW - thermal history KW - iron KW - meteorites KW - Al-26 KW - radioactive isotopes KW - chronology KW - aluminum KW - Fe-60 KW - accretion KW - numerical models KW - Vesta Asteroid KW - differentiation KW - diogenite KW - achondrites KW - porosity KW - early solar system KW - solar nebula KW - metals KW - planetary interiors KW - eucrite 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/1520103551?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+heating+history+of+Vesta+and+the+onset+of+differentiation&rft.au=Formisano%2C+Michelangelo%3BFederico%2C+Costanzo%3BTurrini%2C+Diego%3BCoradini%2C+Angioletta%3BCapaccioni%2C+Fabrizio%3BSanctis%2C+Maria+Cristina%3BPauselli%2C+Cristina&rft.aulast=Formisano&rft.aufirst=Michelangelo&rft.date=2013-11-01&rft.volume=48&rft.issue=11&rft.spage=2316&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12134 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 59 N1 - PubXState - AR N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2014-05-01 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - accretion; achondrites; Al-26; aluminum; asteroids; chronology; crust; differentiation; diogenite; early solar system; eucrite; Fe-60; iron; isotopes; magmatic differentiation; mantle; metals; meteorites; numerical models; partial melting; planetary interiors; porosity; radioactive isotopes; silicates; solar nebula; stony meteorites; thermal history; Vesta Asteroid DO - http://dx.doi.org/10.1111/maps.12134 ER - TY - JOUR T1 - Neutron absorption constraints on the composition of 4 Vesta AN - 1520103422; 2014-030349 AB - Global maps of the macroscopic thermal neutron absorption cross section of Vesta's regolith by the Gamma Ray and Neutron Detector (GRaND) on board the NASA Dawn spacecraft provide constraints on the abundance and distribution of Fe, Ca, Al, Mg, and other rock-forming elements. From a circular, polar low-altitude mapping orbit, GRaND sampled the regolith to decimeter depths with a spatial resolution of about 300 km. At this spatial scale, the variation in neutron absorption is about seven times lower than that of the Moon. The observed variation is consistent with the range of absorption for howardite whole-rock compositions, which further supports the connection between Vesta and the howardite, eucrite, and diogenite meteorites. We find a strong correlation between neutron absorption and the percentage of eucritic materials in howardites and polymict breccias, which enables petrologic mapping of Vesta's surface. The distribution of basaltic eucrite and diogenite determined from neutron absorption measurements is qualitatively similar to that indicated by visible and near infrared spectroscopy. The Rheasilvia basin and ejecta blanket has relatively low absorption, consistent with Mg-rich orthopyroxene. Based on a combination of Fe and neutron absorption measurements, olivine-rich lithologies are not detected on the spatial scales sampled by GRaND. The sensitivity of GRaND to the presence of mantle material is described and implications for the absence of an olivine signature are discussed. High absorption values found in Vesta's "dark" hemisphere, where exogenic hydrogen has accumulated, indicate that this region is richer in basaltic eucrite, representative of Vesta's ancient upper crust. Abstract Copyright The Meteoritical Society, 2013. JF - Meteoritics & Planetary Science AU - Prettyman, Thomas H AU - Mittlefehldt, David W AU - Yamashita, Naoyuki AU - Beck, Andrew W AU - Feldman, William C AU - Hendricks, John S AU - Lawrence, David J AU - McCoy, Timothy J AU - McSween, Harry Y AU - Peplowski, Patrick N AU - Reedy, Robert C AU - Toplis, Michael J AU - Corre, Lucille AU - Mizzon, Hugau AU - Reddy, Vishnu AU - Titus, Timothy N AU - Raymond, Carol A AU - Russell, Christopher T Y1 - 2013/11// PY - 2013 DA - November 2013 SP - 2211 EP - 2236 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 11 SN - 1086-9379, 1086-9379 KW - silicates KW - calcium KW - magnesium KW - stony meteorites KW - asteroids KW - Rheasilvia Basin KW - GRaND instrument KW - Dawn Mission KW - iron KW - meteorites KW - pyroxene group KW - whole rock KW - howardite KW - aluminum KW - chemical composition KW - basaltic composition KW - chain silicates KW - upper crust KW - alkaline earth metals KW - gamma-ray methods KW - Vesta Asteroid KW - diogenite KW - achondrites KW - neutrons KW - neutron probe data KW - metals KW - eucrite KW - orthopyroxene KW - regolith 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/1520103422?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Neutron+absorption+constraints+on+the+composition+of+4+Vesta&rft.au=Prettyman%2C+Thomas+H%3BMittlefehldt%2C+David+W%3BYamashita%2C+Naoyuki%3BBeck%2C+Andrew+W%3BFeldman%2C+William+C%3BHendricks%2C+John+S%3BLawrence%2C+David+J%3BMcCoy%2C+Timothy+J%3BMcSween%2C+Harry+Y%3BPeplowski%2C+Patrick+N%3BReedy%2C+Robert+C%3BToplis%2C+Michael+J%3BCorre%2C+Lucille%3BMizzon%2C+Hugau%3BReddy%2C+Vishnu%3BTitus%2C+Timothy+N%3BRaymond%2C+Carol+A%3BRussell%2C+Christopher+T&rft.aulast=Prettyman&rft.aufirst=Thomas&rft.date=2013-11-01&rft.volume=48&rft.issue=11&rft.spage=2211&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12244 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 107 N1 - PubXState - AR N1 - Document feature - illus. incl. 2 tables, geol. sketch maps N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-08-14 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - achondrites; alkaline earth metals; aluminum; asteroids; basaltic composition; calcium; chain silicates; chemical composition; crust; Dawn Mission; diogenite; eucrite; gamma-ray methods; GRaND instrument; howardite; iron; magnesium; metals; meteorites; neutron probe data; neutrons; orthopyroxene; pyroxene group; regolith; Rheasilvia Basin; silicates; stony meteorites; upper crust; Vesta Asteroid; whole rock DO - http://dx.doi.org/10.1111/maps.12244 ER - TY - JOUR T1 - Compositional variability on the surface of 4 Vesta revealed through GRaND measurements of high-energy gamma rays AN - 1520103382; 2014-030351 AB - Measurements of the high-energy gamma-ray flux emanating from asteroid 4 Vesta by the Dawn Gamma-Ray and Neutron Detector (GRaND) have revealed variability in the near-surface elemental composition of the Vestan surface. These observations are consistent with the presence of large (> or =8 X 10 (super 4) km (super 2) ) regions with distinct, HED-like elemental compositions. The results agree broadly with other global measurements, such as the macroscopic neutron absorption cross section and spectral reflectance-derived mineralogic maps. Two distinct regions with eucrite-like elemental compositions have been identified, the first located primarily within the Lucaria and Marcia quadrangles and the second within Oppia quadrangle. The former region is collocated with some of the oldest, most heavily cratered terrain on Vesta. The interior of the 500 km diameter Rheasilvia impact basin is found to have a composition that is consistent with diogenite-like material. Taken together, these observations support the hypothesis that Vesta's original crust was composed of basaltic outflows in the form of eucritic-like material and that the Rheasilvia-basin-forming impact exposed lower-crustal, diogenite-like material. These measurements also constrain the maximum amount of mesosiderite-like material to <10% for each 15 X 15 degrees surface element. Abstract Copyright The Meteoritical Society, 2013. JF - Meteoritics & Planetary Science AU - Peplowski, Patrick N AU - Lawrence, David J AU - Prettyman, Thomas H AU - Yamashita, Naoyuki AU - Bazell, Dave AU - Feldman, William C AU - Le Corre, Lucille AU - McCoy, Timothy J AU - Reddy, Vishnu AU - Reedy, Robert C AU - Russell, Christopher T AU - Toplis, Michael J Y1 - 2013/11// PY - 2013 DA - November 2013 SP - 2252 EP - 2270 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 11 SN - 1086-9379, 1086-9379 KW - stony meteorites KW - asteroids KW - Rheasilvia Basin KW - data processing KW - GRaND instrument KW - Dawn Mission KW - meteorites KW - gamma rays KW - mixing KW - gamma-ray spectra KW - cosmic rays KW - spectra KW - heterogeneity KW - chemical composition KW - basaltic composition KW - stony irons KW - high-energy gamma rays KW - Vesta Asteroid KW - HED meteorites KW - diogenite KW - achondrites KW - Gamma Ray and Neutron Detector KW - eucrite KW - mesosiderite KW - corrections KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1520103382?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Compositional+variability+on+the+surface+of+4+Vesta+revealed+through+GRaND+measurements+of+high-energy+gamma+rays&rft.au=Peplowski%2C+Patrick+N%3BLawrence%2C+David+J%3BPrettyman%2C+Thomas+H%3BYamashita%2C+Naoyuki%3BBazell%2C+Dave%3BFeldman%2C+William+C%3BLe+Corre%2C+Lucille%3BMcCoy%2C+Timothy+J%3BReddy%2C+Vishnu%3BReedy%2C+Robert+C%3BRussell%2C+Christopher+T%3BToplis%2C+Michael+J&rft.aulast=Peplowski&rft.aufirst=Patrick&rft.date=2013-11-01&rft.volume=48&rft.issue=11&rft.spage=2252&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12176 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 54 N1 - PubXState - AR N1 - Document feature - illus. incl. geol. sketch map N1 - Last updated - 2014-05-01 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - achondrites; asteroids; basaltic composition; chemical composition; corrections; cosmic rays; data processing; Dawn Mission; diogenite; eucrite; Gamma Ray and Neutron Detector; gamma rays; gamma-ray spectra; GRaND instrument; HED meteorites; heterogeneity; high-energy gamma rays; mesosiderite; meteorites; mixing; Rheasilvia Basin; spectra; stony irons; stony meteorites; Vesta Asteroid DO - http://dx.doi.org/10.1111/maps.12176 ER - TY - JOUR T1 - Dawn; the Vesta-HED connection; and the geologic context for eucrites, diogenites, and howardites AN - 1520103239; 2014-030342 AB - The Dawn mission has provided new evidence strengthening the identification of asteroid Vesta as the parent body of the howardite, eucrite, and diogenite (HED) meteorites. The evidence includes Vesta's petrologic complexity, detailed spectroscopic characteristics, unique space weathering, diagnostic geochemical abundances and neutron absorption characteristics, chronology of surface units and impact history, occurrence of exogenous carbonaceous chondritic materials in the regolith, and dimensions of the core, all of which are consistent with HED observations and constraints. Global mapping of the distributions of HED lithologies by Dawn cameras and spectrometers provides the missing geologic context for these meteorites, thereby allowing tests of petrogenetic models and increasing their scientific value. Abstract Copyright The Meteoritical Society, 2013. JF - Meteoritics & Planetary Science AU - McSween, Harry Y, Jr AU - Binzel, Richard P AU - De Sanctis, M Cristina AU - Ammannito, Eleonora AU - Prettyman, Thomas H AU - Beck, Andrew W AU - Reddy, Vishnu AU - Corre, Lucille AU - Gaffey, Michael J AU - McCord, Thomas B AU - Raymond, Carol A AU - Russell, Christopher T Y1 - 2013/11// PY - 2013 DA - November 2013 SP - 2090 EP - 2104 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 11 SN - 1086-9379, 1086-9379 KW - stony meteorites KW - oxygen KW - asteroids KW - isotopes KW - mantle KW - mapping KW - Dawn Mission KW - stable isotopes KW - meteorites KW - howardite KW - dates KW - absolute age KW - chromium KW - O-17/O-16 KW - Ar/Ar KW - Vesta Asteroid KW - isotope ratios KW - parent bodies KW - HED meteorites KW - diogenite KW - achondrites KW - weathering KW - space weathering KW - Cr-53/Cr-52 KW - metals KW - eucrite KW - core KW - reflectance KW - regolith 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/1520103239?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Dawn%3B+the+Vesta-HED+connection%3B+and+the+geologic+context+for+eucrites%2C+diogenites%2C+and+howardites&rft.au=McSween%2C+Harry+Y%2C+Jr%3BBinzel%2C+Richard+P%3BDe+Sanctis%2C+M+Cristina%3BAmmannito%2C+Eleonora%3BPrettyman%2C+Thomas+H%3BBeck%2C+Andrew+W%3BReddy%2C+Vishnu%3BCorre%2C+Lucille%3BGaffey%2C+Michael+J%3BMcCord%2C+Thomas+B%3BRaymond%2C+Carol+A%3BRussell%2C+Christopher+T&rft.aulast=McSween&rft.aufirst=Harry&rft.date=2013-11-01&rft.volume=48&rft.issue=11&rft.spage=2090&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12108 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 111 N1 - PubXState - AR N1 - Document feature - illus. N1 - Last updated - 2014-05-01 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - absolute age; achondrites; Ar/Ar; asteroids; chromium; core; Cr-53/Cr-52; crust; dates; Dawn Mission; diogenite; eucrite; HED meteorites; howardite; isotope ratios; isotopes; mantle; mapping; metals; meteorites; O-17/O-16; oxygen; parent bodies; reflectance; regolith; space weathering; stable isotopes; stony meteorites; Vesta Asteroid; weathering DO - http://dx.doi.org/10.1111/maps.12108 ER - TY - JOUR T1 - Overview of the composition of asteroid 4 Vesta; constraints from the Dawn spacecraft mission and HEDs AN - 1520102982; 2014-030341 JF - Meteoritics & Planetary Science Y1 - 2013/11// PY - 2013 DA - November 2013 SP - 2073 EP - 2349 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 11 SN - 1086-9379, 1086-9379 KW - meteorites KW - stony meteorites KW - asteroids KW - Vesta Asteroid KW - parent bodies KW - HED meteorites KW - composition KW - Dawn Mission KW - achondrites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1520102982?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=2013-11-01&rft.volume=&rft.issue=&rft.spage=2073&rft.isbn=&rft.btitle=Overview+of+the+composition+of+asteroid+4+Vesta%3B+constraints+from+the+Dawn+spacecraft+mission+and+HEDs&rft.title=Overview+of+the+composition+of+asteroid+4+Vesta%3B+constraints+from+the+Dawn+spacecraft+mission+and+HEDs&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12190 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - PubXState - AR N1 - Document feature - illus. N1 - SuppNotes - Individual papers are cited separately N1 - Last updated - 2014-05-01 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - achondrites; asteroids; composition; Dawn Mission; HED meteorites; meteorites; parent bodies; stony meteorites; Vesta Asteroid DO - http://dx.doi.org/10.1111/maps.12190 ER - TY - JOUR T1 - The origin of eucrites, diogenites, and olivine diogenites; magma ocean crystallization and shallow magma chamber processes on Vesta AN - 1520102962; 2014-030356 AB - The asteroid 4 Vesta is one of the very few heavenly bodies to have been linked to samples on Earth: the howardite-eucrite-diogenite (HED) meteorite suite. This large and diverse suite of meteorites provides a detailed picture of Vesta's igneous and postigneous history. We have used the range of igneous rock types and compositions in the HED suite to test a series of chemical models for solidification processes following peak melting (magma ocean) conditions on Vesta. Fractional crystallization cannot have been a dominant early process in the magma ocean because it leads to excessive Fe-enrichment in the melt. Models that are dominated by equilibrium crystallization cannot produce orthopyroxene cumulates (diogenites). Our best models invoke 60-70% equilibrium crystallization of a magma ocean followed by continuous extraction of the residual melt into shallow magma chambers. Fractional crystallization in these magma chambers combined with continuous or periodic addition of more melt from the slowly compacting crystal mush (magmatic recharge) can produce all of the igneous HED lithologies (noncumulate and cumulate eucrites, diogenites, dunites, harzburgites, and olivine diogenites). Magmatic recharge can also explain the narrow range in eucrite compositions and the variability of incompatible trace element concentrations in diogenites. We predict an internal structure for Vesta that permits excavation of the HEDs during the formation of the Rheasilvia basin, while remaining consistent with observations from the Dawn mission and most impact models. Abstract Copyright (2013), The Authors. Meteoritics & Planetary Science published by Wiley Periodicals, Inc. on behalf of The Meteoritical Society. JF - Meteoritics & Planetary Science AU - Mandler, Ben E AU - Elkins-Tanton, Linda T Y1 - 2013/11// PY - 2013 DA - November 2013 SP - 2333 EP - 2349 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 11 SN - 1086-9379, 1086-9379 KW - silicates KW - stony meteorites KW - asteroids KW - igneous rocks KW - Rheasilvia Basin KW - partial melting KW - mantle KW - olivine group KW - harzburgite KW - thermal history KW - Dawn Mission KW - meteorites KW - pyroxene group KW - plutonic rocks KW - chronology KW - cumulates KW - olivine KW - orthosilicates KW - chain silicates KW - magma oceans KW - Vesta Asteroid KW - HED meteorites KW - diogenite KW - achondrites KW - ultramafics KW - nesosilicates KW - models KW - peridotites KW - eucrite KW - orthopyroxene KW - fractional crystallization KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1520102962?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+origin+of+eucrites%2C+diogenites%2C+and+olivine+diogenites%3B+magma+ocean+crystallization+and+shallow+magma+chamber+processes+on+Vesta&rft.au=Mandler%2C+Ben+E%3BElkins-Tanton%2C+Linda+T&rft.aulast=Mandler&rft.aufirst=Ben&rft.date=2013-11-01&rft.volume=48&rft.issue=11&rft.spage=2333&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12135 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 88 N1 - PubXState - AR N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2014-05-01 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - achondrites; asteroids; chain silicates; chronology; cumulates; Dawn Mission; diogenite; eucrite; fractional crystallization; harzburgite; HED meteorites; igneous rocks; magma oceans; mantle; meteorites; models; nesosilicates; olivine; olivine group; orthopyroxene; orthosilicates; partial melting; peridotites; plutonic rocks; pyroxene group; Rheasilvia Basin; silicates; stony meteorites; thermal history; ultramafics; Vesta Asteroid DO - http://dx.doi.org/10.1111/maps.12135 ER - TY - JOUR T1 - Chondritic models of 4 Vesta; implications for geochemical and geophysical properties AN - 1520102951; 2014-030354 AB - Simple mass-balance and thermodynamic constraints are used to illustrate the potential geochemical and geophysical diversity of a fully differentiated Vesta-sized parent body with a eucrite crust (e.g., core size and density, crustal thickness). The results of this analysis are then combined with data from the howardite-eucrite-diogenite (HED) meteorites and the Dawn mission to constrain Vesta's bulk composition. Twelve chondritic compositions are considered, comprising seven carbonaceous, three ordinary, and two enstatite chondrite groups. Our analysis excludes CI and LL compositions as plausible Vesta analogs, as these are predicted to have a negative metal fraction. Second, the MELTS thermodynamic calculator is used to show that the enstatite chondrites, the CV, CK and L-groups cannot produce Juvinas-like liquids, and that even for the other groups, depletion in sodium is necessary to produce liquids of appropriate silica content. This conclusion is consistent with the documented volatile-poor nature of eucrites. Furthermore, carbonaceous chondrites are predicted to have a mantle too rich in olivine to produce typical howardites and to have Fe/Mn ratios generally well in excess of those of the HEDs. On the other hand, an Na-depleted H-chondrite bulk composition is capable of producing Juvinas-like liquids, has a mantle rich enough in pyroxene to produce abundant howardite/diogenite, and has a Fe/Mn ratio compatible with eucrites. In addition, its predicted bulk-silicate density is within 100 kg m (super -3) of solutions constrained by data of the Dawn mission. However, oxidation state and oxygen isotopes are not perfectly reproduced and it is deduced that bulk Vesta may contain approximately 25% of a CM-like component. Values for the bulk-silicate composition of Vesta and a preliminary phase diagram are proposed. Abstract Copyright The Meteoritical Society, 2013. JF - Meteoritics & Planetary Science AU - Toplis, Michael J AU - Mizzon, Hugau AU - Monnereau, M AU - Forni, O AU - McSween, H Y AU - Mittlefehldt, David W AU - McCoy, Timothy J AU - Prettyman, Thomas H AU - Sanctis, Maria Cristina AU - Raymond, Carol A AU - Russell, Christopher T Y1 - 2013/11// PY - 2013 DA - November 2013 SP - 2300 EP - 2315 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 11 SN - 1086-9379, 1086-9379 KW - silicates KW - ordinary chondrites KW - stony meteorites KW - asteroids KW - mantle KW - olivine group KW - manganese KW - Dawn Mission KW - iron KW - meteorites KW - phase equilibria KW - howardite KW - mass balance KW - olivine KW - orthosilicates KW - thermodynamic properties KW - chondrites KW - Vesta Asteroid KW - HED meteorites KW - alkali metals KW - diogenite KW - H chondrites KW - carbonaceous chondrites KW - sodium KW - achondrites KW - nesosilicates KW - models KW - metals KW - eucrite KW - core 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/1520102951?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Chondritic+models+of+4+Vesta%3B+implications+for+geochemical+and+geophysical+properties&rft.au=Toplis%2C+Michael+J%3BMizzon%2C+Hugau%3BMonnereau%2C+M%3BForni%2C+O%3BMcSween%2C+H+Y%3BMittlefehldt%2C+David+W%3BMcCoy%2C+Timothy+J%3BPrettyman%2C+Thomas+H%3BSanctis%2C+Maria+Cristina%3BRaymond%2C+Carol+A%3BRussell%2C+Christopher+T&rft.aulast=Toplis&rft.aufirst=Michael&rft.date=2013-11-01&rft.volume=48&rft.issue=11&rft.spage=2300&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12195 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 92 N1 - PubXState - AR N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2014-05-01 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - achondrites; alkali metals; asteroids; carbonaceous chondrites; chondrites; core; crust; Dawn Mission; diogenite; eucrite; H chondrites; HED meteorites; howardite; iron; manganese; mantle; mass balance; metals; meteorites; models; nesosilicates; olivine; olivine group; ordinary chondrites; orthosilicates; phase equilibria; silicates; sodium; stony meteorites; thermodynamic properties; Vesta Asteroid DO - http://dx.doi.org/10.1111/maps.12195 ER - TY - JOUR T1 - The sulfur isotope signatures of Marinoan deglaciation captured in Neoproterozoic shallow-to-deep cap carbonate from south China AN - 1502291967; 2014-012854 AB - We present high-resolution sulfur and carbon isotope records from the cap carbonate of the Doushantuo Formation, South China, a unique suite of depositional facies spanning across a pronounced paleo-oceanic depth gradient. The delta (super 34) S of carbonate-associated sulfate (CAS) decreases across a shelf-to-slope depth transect. We propose that the deeper-water slope profile represents syn-glacial sulfur isotope compositions of the seawater sulfates with impact of (super 34) S-depleted hydrothermal sulfur inputs, while the delta (super 34) S of the shallow inner-shelf were dominantly controlled by the (super 34) S-enriched terrigenous input. We suggest that the terrigenous sulfur inputs were mainly from weathering and erosion of the pre-Marinoan Datangpo Formation-glacially ground and then freshly exposed during rapid deglaciation. The widespread Datangpo Formation, deposited between the Sturtian and Marinoan glacial intervals, is noted for the unusually high delta (super 34) S values of its pyrite. The low sulfate conditions in the ocean allowed for strong local controls and consequent heterogeneities in seawater chemistry. The post-Marinoan ocean was stratified in the immediate wake of glaciation, with anoxic deep waters overlain by an oxic, melt-water layer. During the transgression, the shallow water was disturbed by upwelling. The oxidation of dissolved organic carbon (DOC) from deep water would lead to transiently enhanced (super 13) C depletions but (super 34) S enrichments in the shallow waters. Abstract Copyright (2013) Elsevier, B.V. JF - Precambrian Research AU - Huang, Jing AU - Chu, Xuelei AU - Lyons, Timothy W AU - Sun, Tao AU - Feng, Lianjun AU - Zhang, Qirui AU - Chang, Huajin Y1 - 2013/11// PY - 2013 DA - November 2013 SP - 42 EP - 51 PB - Elsevier, Amsterdam VL - 238 SN - 0301-9268, 0301-9268 KW - lithostratigraphy KW - Far East KW - upper Precambrian KW - southern China KW - Ediacaran KW - isotopes KW - paleo-oceanography KW - paleoclimatology KW - stable isotopes KW - deglaciation KW - climate change KW - Datangpo Formation KW - sedimentary rocks KW - Sinian KW - depositional environment KW - Asia KW - Eh KW - China KW - Neoproterozoic KW - Sturtian KW - Precambrian KW - isotope ratios KW - sedimentation KW - Proterozoic KW - paleoenvironment KW - S-34/S-32 KW - Marinoan KW - cap rocks KW - sulfur KW - pyrite KW - Doushantuo Formation KW - crystal chemistry KW - carbonate rocks KW - sulfides KW - 12:Stratigraphy KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1502291967?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Precambrian+Research&rft.atitle=The+sulfur+isotope+signatures+of+Marinoan+deglaciation+captured+in+Neoproterozoic+shallow-to-deep+cap+carbonate+from+south+China&rft.au=Huang%2C+Jing%3BChu%2C+Xuelei%3BLyons%2C+Timothy+W%3BSun%2C+Tao%3BFeng%2C+Lianjun%3BZhang%2C+Qirui%3BChang%2C+Huajin&rft.aulast=Huang&rft.aufirst=Jing&rft.date=2013-11-01&rft.volume=238&rft.issue=&rft.spage=42&rft.isbn=&rft.btitle=&rft.title=Precambrian+Research&rft.issn=03019268&rft_id=info:doi/10.1016%2Fj.precamres.2013.09.002 L2 - http://www.sciencedirect.com/science/journal/03019268 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2014-01-01 N1 - Number of references - 73 N1 - Document feature - illus. incl. 3 tables, sketch map N1 - Last updated - 2014-02-27 N1 - CODEN - PCBRBY N1 - SubjectsTermNotLitGenreText - Asia; cap rocks; carbonate rocks; China; climate change; crystal chemistry; Datangpo Formation; deglaciation; depositional environment; Doushantuo Formation; Ediacaran; Eh; Far East; isotope ratios; isotopes; lithostratigraphy; Marinoan; Neoproterozoic; paleo-oceanography; paleoclimatology; paleoenvironment; Precambrian; Proterozoic; pyrite; S-34/S-32; sedimentary rocks; sedimentation; Sinian; southern China; stable isotopes; Sturtian; sulfides; sulfur; upper Precambrian DO - http://dx.doi.org/10.1016/j.precamres.2013.09.002 ER - TY - JOUR T1 - Determination and localized analysis of intersatellite line of sight gravity difference: Results from the GRAIL primary mission AN - 1492648652; 18926362 AB - The line of sight (LOS) gravity difference between two coorbiting spacecrafts is determined in terms of intersatellite range-acceleration measurements available from the Gravity Recovery and Interior Laboratory (GRAIL). The precise orbit data are crucial for retrieving gravity difference from range acceleration and aligning the LOS data particularly in altitude. A relative orbit error of a few centimeters in position and a few tens mu m/s in velocity is commensurate with the GRAIL-ranging instrument noise at a few mu Gal in LOS gravity difference. The power spectrum, as well as the topography correlation and admittance, is quantified by upward continuing the topographic potential, forward modeling the LOS gravity along the spacecraft trajectory (i.e., Bouguer correction) and comparing with the GRAIL LOS observations. Based on the data analysis from the primary GRAIL mission, I found that the LOS gravity difference observation produced near unity correlation with topography potential out to degree 550, higher than the global estimate, over the areas covered by the low-altitude orbit ( similar to 20 km). The crustal density was estimated to be 2500-2600 kg/m super(3) with regional variations of about 10%, by minimizing the Bouguer coherence of the GRAIL data at the degree band 150-300. Systematic decrease in the density estimates by 3-4% or 100 kg/m super(3) was observed at shorter wavelengths (degree band 300-500). It implies the inadequacy of a uniform density model across the entire lithosphere and suggests radial stratification of the bulk density (or porosity). Due to spatially localized characteristic, the LOS gravity difference data are well suited to regional analysis at the highest-possible resolution. Key Points * Localized analysis of intersatellite tracking data from GRAIL * High-resolution analysis of crustal density structure from the primary mission * A rigorous model is developed for in situ gravity difference from L1B data JF - Journal of Geophysical Research. E. Planets AU - Han, Shin-Chan AD - Planetary Geodynamics Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2013/11// PY - 2013 DA - Nov 2013 SP - 2323 EP - 2337 PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD United Kingdom VL - 118 IS - 11 SN - 2169-9097, 2169-9097 KW - Pollution Abstracts; Meteorological & Geoastrophysical Abstracts KW - GRAIL KW - gravity KW - topography KW - crustal density KW - Acoustic waves KW - Porosity KW - Noise levels KW - Lithosphere KW - Correlations KW - Velocity KW - Stratification KW - Spacecraft KW - Data analysis KW - Altitude KW - Stellar planets KW - Regional planning KW - Noise pollution KW - Topography KW - P 7000:NOISE KW - M2 523.4:Planets (523.4) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1492648652?accountid=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.+E.+Planets&rft.atitle=Determination+and+localized+analysis+of+intersatellite+line+of+sight+gravity+difference%3A+Results+from+the+GRAIL+primary+mission&rft.au=Han%2C+Shin-Chan&rft.aulast=Han&rft.aufirst=Shin-Chan&rft.date=2013-11-01&rft.volume=118&rft.issue=11&rft.spage=2323&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research.+E.+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2F2013JE004402 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-01-01 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Stellar planets; Acoustic waves; Correlations; Noise pollution; Data analysis; Topography; Altitude; Porosity; Lithosphere; Noise levels; Regional planning; Velocity; Stratification; Spacecraft DO - http://dx.doi.org/10.1002/2013JE004402 ER - TY - JOUR T1 - Excess ground ice of condensation-diffusion origin in University Valley, Dry Valleys of Antarctica; evidence from isotope geochemistry and numerical modeling AN - 1469627422; 2013-098026 AB - This study investigates the origin and age of ground ice in the uppermost 1 m of permafrost in University Valley, one of the upper valleys in the McMurdo Dry Valleys of Antarctica. In contrast to other regions in the MDV, mean daily air and soil temperatures at the coring sites are always below 0 degrees C, which allows for unique cryogenic processes to occur. In the two cores that were analyzed, excess ground ice was measured throughout, ranging between 23% and 85%. Isotope geochemical trends in the ice-rich permafrost indicate that the ground in Core 5 (65 cm long) and the uppermost 52 cm of Core 7 originated from condensation-diffusion of water vapor; whereas the ground ice between 57-90 cm in Core 7 originated from freezing of liquid water. Using numerical modeling, we show that the excess ground ice of condensation-diffusion origin formed by the long-term thermal contraction-expansion of the cryotic sediments, which allowed for the ice content to exceed pore-filling capacity. Absolute age estimates of the sandy-loam sediments based on Optically Stimulated Luminescence dating indicate that soils have been accreting at the site for at least the last 170+ or -36 ka years, and this places an upper limit to the age of the ground ice. Absolute soil ages allowed us to link the change in ground ice origin in Core 7, which took place around 152+ or -12 ka years, with shifts in climate conditions since marine isotope stage 5e interglacial period. Our findings offer a new process of ground ice emplacement in sediments in cold-dry environments and allow an alternative explanation regarding the enigmatic origin of excess ground ice identified by Mars Odyssey and Phoenix in the northern martian plain, which is that overfilled pore ice can form by vapor deposition and repeated thermal cycling without the presence of melt water. Abstract Copyright (2013) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Lacelle, Denis AU - Davila, Alfonso F AU - Fisher, David AU - Pollard, Wayne H AU - DeWitt, Regina AU - Heldmann, Jennifer AU - Marinova, Margarita M AU - McKay, Christopher P Y1 - 2013/11/01/ PY - 2013 DA - 2013 Nov 01 SP - 280 EP - 297 PB - Elsevier, New York, NY VL - 120 SN - 0016-7037, 0016-7037 KW - relative age KW - isotope fractionation KW - permafrost KW - oxygen KW - isotopes KW - Mars KW - Phoenix KW - stable isotopes KW - Cenozoic KW - optically stimulated luminescence KW - geochronology KW - ice KW - ground ice KW - orbital observations KW - chemical composition KW - University Valley KW - ice cores KW - diffusion KW - Quaternary KW - numerical models KW - condensation KW - isotope ratios KW - O-18/O-16 KW - hydrochemistry KW - Mars Odyssey KW - terrestrial planets KW - models KW - planets KW - Antarctica KW - D/H KW - hydrogen KW - mathematical methods KW - McMurdo dry valleys KW - Victoria Land KW - Pleistocene KW - Beacon Valley KW - meltwater KW - 04:Extraterrestrial geology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1469627422?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Excess+ground+ice+of+condensation-diffusion+origin+in+University+Valley%2C+Dry+Valleys+of+Antarctica%3B+evidence+from+isotope+geochemistry+and+numerical+modeling&rft.au=Lacelle%2C+Denis%3BDavila%2C+Alfonso+F%3BFisher%2C+David%3BPollard%2C+Wayne+H%3BDeWitt%2C+Regina%3BHeldmann%2C+Jennifer%3BMarinova%2C+Margarita+M%3BMcKay%2C+Christopher+P&rft.aulast=Lacelle&rft.aufirst=Denis&rft.date=2013-11-01&rft.volume=120&rft.issue=&rft.spage=280&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2013.06.032 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2013-01-01 N1 - Number of references - 70 N1 - PubXState - NY N1 - Document feature - illus. incl. sketch map N1 - SuppNotes - Includes appendices N1 - Last updated - 2013-12-20 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - Antarctica; Beacon Valley; Cenozoic; chemical composition; condensation; D/H; diffusion; geochronology; ground ice; hydrochemistry; hydrogen; ice; ice cores; isotope fractionation; isotope ratios; isotopes; Mars; Mars Odyssey; mathematical methods; McMurdo dry valleys; meltwater; models; numerical models; O-18/O-16; optically stimulated luminescence; orbital observations; oxygen; permafrost; Phoenix; planets; Pleistocene; Quaternary; relative age; stable isotopes; terrestrial planets; University Valley; Victoria Land DO - http://dx.doi.org/10.1016/j.gca.2013.06.032 ER - TY - JOUR T1 - Provenance Representation for the National Climate Assessment in the Global Change Information System AN - 1464501236; 18778302 AB - The important topic of global climate change builds on a huge collection of scientific research. It is common for agencies releasing climate change information to be served with requests for all supporting materials resulting in a particular conclusion. Capturing and presenting global change provenance, linking to the research papers, data sets, models, analyses, observations, satellites, etc., that support the key research findings in this domain can increase understanding and aid in reproducibility of results and conclusions. The U.S. Global Change Research Program is now coordinating the production of a national climate assessment (NCA) that presents our best understanding of global change. We are now developing a global change information system that will present the content of that report and its provenance, including the scientific support for the findings of the assessment. We are using an approach that will present this information both through a human accessible Web site as well as a machine-readable interface for automated mining of the provenance graph. We plan to use the developing World Wide Web Consortium (W3C) PROV data model and ontology for this system. This paper will describe an overview of the process of developing the NCA and how the provenance trail of the report and each of the technical inputs can be captured and represented using the W3C PROV ontology. This will improve the visibility into the assessment process, increase understanding and possibility of reproducibility, and ultimately increase the credibility and trust of the resulting report. JF - IEEE Transactions on Geoscience and Remote Sensing AU - Tilmes, Curt AU - Fox, Peter AU - Ma, Xiaogang AU - McGuinness, Deborah L AU - Privette, Ana Pinheiro AU - Smith, Aaron AU - Waple, Anne AU - Zednik, Stephan AU - Zheng, Jin Guang AD - NASA Goddard Space Flight Center, Greenbelt, MD, USA Y1 - 2013/11// PY - 2013 DA - November 2013 SP - 5160 EP - 5168 PB - Institute of Electrical and Electronics Engineers, Inc., 345 E. 47th St. NY NY 10017-2394 United States VL - 51 IS - 11 SN - 0196-2892, 0196-2892 KW - Meteorological & Geoastrophysical Abstracts; Sustainability Science Abstracts KW - Climate models KW - Climate change KW - Remote sensing KW - Satellites KW - World Wide Web KW - USA KW - Scientific research KW - Satellite data KW - Visibility KW - Mining KW - Research programs KW - Information systems 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/1464501236?accountid=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=IEEE+Transactions+on+Geoscience+and+Remote+Sensing&rft.atitle=Provenance+Representation+for+the+National+Climate+Assessment+in+the+Global+Change+Information+System&rft.au=Tilmes%2C+Curt%3BFox%2C+Peter%3BMa%2C+Xiaogang%3BMcGuinness%2C+Deborah+L%3BPrivette%2C+Ana+Pinheiro%3BSmith%2C+Aaron%3BWaple%2C+Anne%3BZednik%2C+Stephan%3BZheng%2C+Jin+Guang&rft.aulast=Tilmes&rft.aufirst=Curt&rft.date=2013-11-01&rft.volume=51&rft.issue=11&rft.spage=5160&rft.isbn=&rft.btitle=&rft.title=IEEE+Transactions+on+Geoscience+and+Remote+Sensing&rft.issn=01962892&rft_id=info:doi/10.1109%2FTGRS.2013.2262179 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-11-01 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Satellite data; Scientific research; Climate models; Climate change; Remote sensing; Visibility; World Wide Web; Mining; Satellites; Research programs; Information systems; USA DO - http://dx.doi.org/10.1109/TGRS.2013.2262179 ER - TY - CPAPER T1 - Feedback between Ice Shell Thinning and Nonsynchronous Rotation Stresses Drives Fracturing in the South Polar Region of Enceladus T2 - 2013 Annual Meeting & Exposition of the Geological Society of America AN - 1490520388; 6248170 JF - 2013 Annual Meeting & Exposition of the Geological Society of America AU - Patthoff, D AU - Kattenhorn, Simon Y1 - 2013/10/27/ PY - 2013 DA - 2013 Oct 27 KW - Ice UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1490520388?accountid=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=2013+Annual+Meeting+%26+Exposition+of+the+Geological+Society+of+America&rft.atitle=Feedback+between+Ice+Shell+Thinning+and+Nonsynchronous+Rotation+Stresses+Drives+Fracturing+in+the+South+Polar+Region+of+Enceladus&rft.au=Patthoff%2C+D%3BKattenhorn%2C+Simon&rft.aulast=Patthoff&rft.aufirst=D&rft.date=2013-10-27&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2013+Annual+Meeting+%26+Exposition+of+the+Geological+Society+of+America&rft.issn=&rft_id=info:doi/ L2 - https://gsa.confex.com/gsa/2013AM/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-11-30 N1 - Last updated - 2014-02-10 ER - TY - CPAPER T1 - Ceres, One Year before Dawn'S Arrival T2 - 2013 Annual Meeting & Exposition of the Geological Society of America AN - 1490513052; 6247428 JF - 2013 Annual Meeting & Exposition of the Geological Society of America AU - Castillo-Rogez, Julie Y1 - 2013/10/27/ PY - 2013 DA - 2013 Oct 27 KW - Geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1490513052?accountid=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=2013+Annual+Meeting+%26+Exposition+of+the+Geological+Society+of+America&rft.atitle=Ceres%2C+One+Year+before+Dawn%27S+Arrival&rft.au=Castillo-Rogez%2C+Julie&rft.aulast=Castillo-Rogez&rft.aufirst=Julie&rft.date=2013-10-27&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2013+Annual+Meeting+%26+Exposition+of+the+Geological+Society+of+America&rft.issn=&rft_id=info:doi/ L2 - https://gsa.confex.com/gsa/2013AM/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-11-30 N1 - Last updated - 2014-02-10 ER - TY - CPAPER T1 - Mapping the Terra Sirenum Region: Window into Pre-Tharsis and Tharsis Phases of Mars Evolution T2 - 2013 Annual Meeting & Exposition of the Geological Society of America AN - 1490512772; 6246865 JF - 2013 Annual Meeting & Exposition of the Geological Society of America AU - Anderson, Robert AU - Dohm, James AU - Hynek, Brian AU - Robbins, S Y1 - 2013/10/27/ PY - 2013 DA - 2013 Oct 27 KW - Mapping UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1490512772?accountid=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=2013+Annual+Meeting+%26+Exposition+of+the+Geological+Society+of+America&rft.atitle=Mapping+the+Terra+Sirenum+Region%3A+Window+into+Pre-Tharsis+and+Tharsis+Phases+of+Mars+Evolution&rft.au=Anderson%2C+Robert%3BDohm%2C+James%3BHynek%2C+Brian%3BRobbins%2C+S&rft.aulast=Anderson&rft.aufirst=Robert&rft.date=2013-10-27&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2013+Annual+Meeting+%26+Exposition+of+the+Geological+Society+of+America&rft.issn=&rft_id=info:doi/ L2 - https://gsa.confex.com/gsa/2013AM/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-11-30 N1 - Last updated - 2014-02-10 ER - TY - CPAPER T1 - Seeking Europa's Ocean T2 - 2013 Annual Meeting & Exposition of the Geological Society of America AN - 1490511753; 6247429 JF - 2013 Annual Meeting & Exposition of the Geological Society of America AU - Pappalardo, Robert Y1 - 2013/10/27/ PY - 2013 DA - 2013 Oct 27 KW - Oceans UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1490511753?accountid=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=2013+Annual+Meeting+%26+Exposition+of+the+Geological+Society+of+America&rft.atitle=Seeking+Europa%27s+Ocean&rft.au=Pappalardo%2C+Robert&rft.aulast=Pappalardo&rft.aufirst=Robert&rft.date=2013-10-27&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2013+Annual+Meeting+%26+Exposition+of+the+Geological+Society+of+America&rft.issn=&rft_id=info:doi/ L2 - https://gsa.confex.com/gsa/2013AM/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-11-30 N1 - Last updated - 2014-02-10 ER - TY - CPAPER T1 - Global Landslide Catalog for Hazard Assessment T2 - 2013 Annual Meeting & Exposition of the Geological Society of America AN - 1490511619; 6246731 JF - 2013 Annual Meeting & Exposition of the Geological Society of America AU - Kirschbaum, Dalia Y1 - 2013/10/27/ PY - 2013 DA - 2013 Oct 27 KW - Landslides UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1490511619?accountid=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=2013+Annual+Meeting+%26+Exposition+of+the+Geological+Society+of+America&rft.atitle=Global+Landslide+Catalog+for+Hazard+Assessment&rft.au=Kirschbaum%2C+Dalia&rft.aulast=Kirschbaum&rft.aufirst=Dalia&rft.date=2013-10-27&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2013+Annual+Meeting+%26+Exposition+of+the+Geological+Society+of+America&rft.issn=&rft_id=info:doi/ L2 - https://gsa.confex.com/gsa/2013AM/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-11-30 N1 - Last updated - 2014-02-10 ER - TY - CPAPER T1 - Water on Airless Terrestrial Bodies: Lunar Case Study T2 - 2013 Annual Meeting & Exposition of the Geological Society of America AN - 1490511320; 6246268 JF - 2013 Annual Meeting & Exposition of the Geological Society of America AU - Liu, Yang AU - Guan, Yunbin AU - Chen, Yang AU - Zhang, Youxue AU - Eiler, John AU - Rossman, George AU - Taylor, Lawrence Y1 - 2013/10/27/ PY - 2013 DA - 2013 Oct 27 KW - Case studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1490511320?accountid=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=2013+Annual+Meeting+%26+Exposition+of+the+Geological+Society+of+America&rft.atitle=Water+on+Airless+Terrestrial+Bodies%3A+Lunar+Case+Study&rft.au=Liu%2C+Yang%3BGuan%2C+Yunbin%3BChen%2C+Yang%3BZhang%2C+Youxue%3BEiler%2C+John%3BRossman%2C+George%3BTaylor%2C+Lawrence&rft.aulast=Liu&rft.aufirst=Yang&rft.date=2013-10-27&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2013+Annual+Meeting+%26+Exposition+of+the+Geological+Society+of+America&rft.issn=&rft_id=info:doi/ L2 - https://gsa.confex.com/gsa/2013AM/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-11-30 N1 - Last updated - 2014-02-10 ER - TY - CPAPER T1 - Radiogenic Ingrowth of 40Ca from Decay of 40K Provides a Powerful Tracer for Understanding the Origins of Felsic Magmas T2 - 2013 Annual Meeting & Exposition of the Geological Society of America AN - 1490510775; 6246150 JF - 2013 Annual Meeting & Exposition of the Geological Society of America AU - Mills, Ryan AU - Simon, Justin AU - Depaolo, Donald AU - Bachmann, Olivier Y1 - 2013/10/27/ PY - 2013 DA - 2013 Oct 27 KW - Decay UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1490510775?accountid=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=2013+Annual+Meeting+%26+Exposition+of+the+Geological+Society+of+America&rft.atitle=Radiogenic+Ingrowth+of+40Ca+from+Decay+of+40K+Provides+a+Powerful+Tracer+for+Understanding+the+Origins+of+Felsic+Magmas&rft.au=Mills%2C+Ryan%3BSimon%2C+Justin%3BDepaolo%2C+Donald%3BBachmann%2C+Olivier&rft.aulast=Mills&rft.aufirst=Ryan&rft.date=2013-10-27&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2013+Annual+Meeting+%26+Exposition+of+the+Geological+Society+of+America&rft.issn=&rft_id=info:doi/ L2 - https://gsa.confex.com/gsa/2013AM/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-11-30 N1 - Last updated - 2014-02-10 ER - TY - CPAPER T1 - an Overview of Curiosity's Search for Ancient Habitable Environments T2 - 2013 Annual Meeting & Exposition of the Geological Society of America AN - 1490506372; 6245882 JF - 2013 Annual Meeting & Exposition of the Geological Society of America AU - Bristow, Thomas AU - Eigenbrode, Jennifer AU - Edgett, Kenneth AU - Kah, Linda AU - Schieber, Juergen Y1 - 2013/10/27/ PY - 2013 DA - 2013 Oct 27 KW - Reviews UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1490506372?accountid=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=2013+Annual+Meeting+%26+Exposition+of+the+Geological+Society+of+America&rft.atitle=an+Overview+of+Curiosity%27s+Search+for+Ancient+Habitable+Environments&rft.au=Bristow%2C+Thomas%3BEigenbrode%2C+Jennifer%3BEdgett%2C+Kenneth%3BKah%2C+Linda%3BSchieber%2C+Juergen&rft.aulast=Bristow&rft.aufirst=Thomas&rft.date=2013-10-27&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2013+Annual+Meeting+%26+Exposition+of+the+Geological+Society+of+America&rft.issn=&rft_id=info:doi/ L2 - https://gsa.confex.com/gsa/2013AM/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-11-30 N1 - Last updated - 2014-02-10 ER - TY - CPAPER T1 - Planetary Karst T2 - 2013 Annual Meeting & Exposition of the Geological Society of America AN - 1490505428; 6246326 JF - 2013 Annual Meeting & Exposition of the Geological Society of America AU - Malaska, Michael AU - Mitchell, Karl AU - Wray, Robert AU - Boston, Penelope Y1 - 2013/10/27/ PY - 2013 DA - 2013 Oct 27 KW - Geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1490505428?accountid=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=2013+Annual+Meeting+%26+Exposition+of+the+Geological+Society+of+America&rft.atitle=Planetary+Karst&rft.au=Malaska%2C+Michael%3BMitchell%2C+Karl%3BWray%2C+Robert%3BBoston%2C+Penelope&rft.aulast=Malaska&rft.aufirst=Michael&rft.date=2013-10-27&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2013+Annual+Meeting+%26+Exposition+of+the+Geological+Society+of+America&rft.issn=&rft_id=info:doi/ L2 - https://gsa.confex.com/gsa/2013AM/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-11-30 N1 - Last updated - 2014-02-10 ER - TY - CPAPER T1 - Smaller, Better, More: Five Decades of Advances in Geochemistry. Part 1 - Inorganic Geochemistry T2 - 2013 Annual Meeting & Exposition of the Geological Society of America AN - 1490504793; 6245875 JF - 2013 Annual Meeting & Exposition of the Geological Society of America AU - Johnson, Clark AU - Mclennan, Scott AU - Mcsween Jr., Harry AU - Summons, Roger Y1 - 2013/10/27/ PY - 2013 DA - 2013 Oct 27 KW - Geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1490504793?accountid=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=2013+Annual+Meeting+%26+Exposition+of+the+Geological+Society+of+America&rft.atitle=Smaller%2C+Better%2C+More%3A+Five+Decades+of+Advances+in+Geochemistry.+Part+1+-+Inorganic+Geochemistry&rft.au=Johnson%2C+Clark%3BMclennan%2C+Scott%3BMcsween+Jr.%2C+Harry%3BSummons%2C+Roger&rft.aulast=Johnson&rft.aufirst=Clark&rft.date=2013-10-27&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2013+Annual+Meeting+%26+Exposition+of+the+Geological+Society+of+America&rft.issn=&rft_id=info:doi/ L2 - https://gsa.confex.com/gsa/2013AM/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-11-30 N1 - Last updated - 2014-02-10 ER - TY - CPAPER T1 - Erosion, Transportation, and Deposition on Outer Solar System Satellites: Landform Evolution Modeling Studies T2 - 2013 Annual Meeting & Exposition of the Geological Society of America AN - 1490504149; 6247788 JF - 2013 Annual Meeting & Exposition of the Geological Society of America AU - Moore, Jeffrey AU - Howard, Alan AU - Schenk, Paul Y1 - 2013/10/27/ PY - 2013 DA - 2013 Oct 27 KW - Remote sensing UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1490504149?accountid=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=2013+Annual+Meeting+%26+Exposition+of+the+Geological+Society+of+America&rft.atitle=Erosion%2C+Transportation%2C+and+Deposition+on+Outer+Solar+System+Satellites%3A+Landform+Evolution+Modeling+Studies&rft.au=Moore%2C+Jeffrey%3BHoward%2C+Alan%3BSchenk%2C+Paul&rft.aulast=Moore&rft.aufirst=Jeffrey&rft.date=2013-10-27&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2013+Annual+Meeting+%26+Exposition+of+the+Geological+Society+of+America&rft.issn=&rft_id=info:doi/ L2 - https://gsa.confex.com/gsa/2013AM/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-11-30 N1 - Last updated - 2014-02-10 ER - TY - CPAPER T1 - Early Solar System Water in the Laboratory T2 - 2013 Annual Meeting & Exposition of the Geological Society of America AN - 1490504141; 6247431 JF - 2013 Annual Meeting & Exposition of the Geological Society of America AU - Zolensky, Michael AU - Bodnar, Robert AU - Fries, Marc AU - Yurimoto, Yoshi AU - Itoh, Shoichi Y1 - 2013/10/27/ PY - 2013 DA - 2013 Oct 27 KW - Geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1490504141?accountid=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=2013+Annual+Meeting+%26+Exposition+of+the+Geological+Society+of+America&rft.atitle=Early+Solar+System+Water+in+the+Laboratory&rft.au=Zolensky%2C+Michael%3BBodnar%2C+Robert%3BFries%2C+Marc%3BYurimoto%2C+Yoshi%3BItoh%2C+Shoichi&rft.aulast=Zolensky&rft.aufirst=Michael&rft.date=2013-10-27&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2013+Annual+Meeting+%26+Exposition+of+the+Geological+Society+of+America&rft.issn=&rft_id=info:doi/ L2 - https://gsa.confex.com/gsa/2013AM/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-11-30 N1 - Last updated - 2014-02-10 ER - TY - JOUR T1 - A comparative study of space radiation organ doses and associated cancer risks using PHITS and HZETRN AN - 1827904286; PQ0001754144 AB - NASA currently uses one-dimensional deterministic transport to generate values of the organ dose equivalent needed to calculate stochastic radiation risk following crew space exposures. In this study, organ absorbed doses and dose equivalents are calculated for 50th percentile male and female astronaut phantoms using both the NASA High Charge and Energy Transport Code to perform one-dimensional deterministic transport and the Particle and Heavy Ion Transport Code System to perform three-dimensional Monte Carlo transport. Two measures of radiation risk, effective dose and risk of exposure-induced death (REID) are calculated using the organ dose equivalents resulting from the two methods of radiation transport. For the space radiation environments and simplified shielding configurations considered, small differences (<8%) in the effective dose and REID are found. However, for the galactic cosmic ray (GCR) boundary condition, compensating errors are observed, indicating that comparisons between the integral measurements of complex radiation environments and code calculations can be misleading. Code-to-code benchmarks allow for the comparison of differential quantities, such as secondary particle differential fluence, to provide insight into differences observed in integral quantities for particular components of the GCR spectrum. JF - Physics in Medicine & Biology AU - Bahadori, Amir A AU - Sato, Tatsuhiko AU - Slaba, Tony C AU - Shavers, Mark R AU - Semones, Edward J AU - Van Baalen, Mary AU - Bolch, Wesley E AD - Biomedical Engineering, University of Florida, Gainesville, FL 32611, USA; NASA Johnson Space Center, Houston, TX 77058, USA, amir.a.bahadori@nasa.gov Y1 - 2013/10/21/ PY - 2013 DA - 2013 Oct 21 SP - 7183 EP - 7207 PB - IOP Publishing, The Public Ledger Building, Suite 929 Philadelphia PA 19106 United States VL - 58 IS - 20 SN - 0031-9155, 0031-9155 KW - Biotechnology and Bioengineering Abstracts KW - Boundaries KW - Stochasticity KW - Cancer KW - W 30965:Miscellaneous, Reviews UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1827904286?accountid=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=Physics+in+Medicine+%26+Biology&rft.atitle=A+comparative+study+of+space+radiation+organ+doses+and+associated+cancer+risks+using+PHITS+and+HZETRN&rft.au=Bahadori%2C+Amir+A%3BSato%2C+Tatsuhiko%3BSlaba%2C+Tony+C%3BShavers%2C+Mark+R%3BSemones%2C+Edward+J%3BVan+Baalen%2C+Mary%3BBolch%2C+Wesley+E&rft.aulast=Bahadori&rft.aufirst=Amir&rft.date=2013-10-21&rft.volume=58&rft.issue=20&rft.spage=7183&rft.isbn=&rft.btitle=&rft.title=Physics+in+Medicine+%26+Biology&rft.issn=00319155&rft_id=info:doi/10.1088%2F0031-9155%2F58%2F20%2F7183 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-10-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Boundaries; Stochasticity; Cancer DO - http://dx.doi.org/10.1088/0031-9155/58/20/7183 ER - TY - JOUR T1 - Low Upper Limit to Methane Abundance on Mars AN - 1554944120; 20374834 AB - No Methane to Be FoundOn Earth, atmospheric methane is mostly produced biologically. Atmospheric methane has also been detected on Mars, but these reports have been controversial. Based on data from the Sample Analysis at Mars instrument suite on the Curiosity rover, which arrived at the surface of Mars in August 2012, Webster et al. (p. 355, published online 19 September) report no methane, with an upper limit of only 1.3 parts per billion by volume, about 6 times lower than previous measurements. JF - Science AU - Webster, Christopher R AU - Mahaffy, Paul R AU - Atreya, Sushil K AU - Flesch, Gregory J AU - Farley, Kenneth A AU - Kemppinen, Osku AU - Bridges, Nathan AU - Johnson, Jeffrey R AU - Minitti, Michelle AU - Cremers, David AU - Bell, James F AU - Edgar, Lauren AU - Farmer, Jack AU - Godber, Austin AU - Wadhwa, Meenakshi AU - Wellington, Danika AU - McEwan, Ian AU - Newman, Claire AU - Richardson, Mark AU - Charpentier, Antoine AU - Peret, Laurent AU - King, Penelope AU - Blank, Jennifer AU - Weigle, Gerald AU - Schmidt, Mariek AU - Li, Shuai AU - Milliken, Ralph AU - Robertson, Kevin AU - Sun, Vivian AU - Baker, Michael AU - Edwards, Christopher AU - Ehlmann, Bethany AU - Farley, Kenneth AU - Griffes, Jennifer AU - Grotzinger, John AU - Miller, Hayden AU - Newcombe, Megan AU - Pilorget, Cedric AU - Rice, Melissa AU - Siebach, Kirsten AU - Stack, Katie AU - Stolper, Edward AU - Brunet, Claude AU - Hipkin, Victoria AU - Leveille, Richard AU - Marchand, Genevieve AU - Sanchez, Pablo Sobron AU - Favot, Laurent AU - Cody, George AU - Steele, Andrew AU - et. al. AD - Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA, chris.r.webster@jpl.nasa.gov Y1 - 2013/10/18/ PY - 2013 DA - 2013 Oct 18 SP - 355 EP - 357 PB - American Association for the Advancement of Science, 1200 New York Avenue, NW Washington DC 20005 United States VL - 342 IS - 6156 SN - 0036-8075, 0036-8075 KW - Ecology Abstracts KW - Methane KW - Data processing KW - Abundance KW - Internet KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1554944120?accountid=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=Science&rft.atitle=Low+Upper+Limit+to+Methane+Abundance+on+Mars&rft.au=Webster%2C+Christopher+R%3BMahaffy%2C+Paul+R%3BAtreya%2C+Sushil+K%3BFlesch%2C+Gregory+J%3BFarley%2C+Kenneth+A%3BKemppinen%2C+Osku%3BBridges%2C+Nathan%3BJohnson%2C+Jeffrey+R%3BMinitti%2C+Michelle%3BCremers%2C+David%3BBell%2C+James+F%3BEdgar%2C+Lauren%3BFarmer%2C+Jack%3BGodber%2C+Austin%3BWadhwa%2C+Meenakshi%3BWellington%2C+Danika%3BMcEwan%2C+Ian%3BNewman%2C+Claire%3BRichardson%2C+Mark%3BCharpentier%2C+Antoine%3BPeret%2C+Laurent%3BKing%2C+Penelope%3BBlank%2C+Jennifer%3BWeigle%2C+Gerald%3BSchmidt%2C+Mariek%3BLi%2C+Shuai%3BMilliken%2C+Ralph%3BRobertson%2C+Kevin%3BSun%2C+Vivian%3BBaker%2C+Michael%3BEdwards%2C+Christopher%3BEhlmann%2C+Bethany%3BFarley%2C+Kenneth%3BGriffes%2C+Jennifer%3BGrotzinger%2C+John%3BMiller%2C+Hayden%3BNewcombe%2C+Megan%3BPilorget%2C+Cedric%3BRice%2C+Melissa%3BSiebach%2C+Kirsten%3BStack%2C+Katie%3BStolper%2C+Edward%3BBrunet%2C+Claude%3BHipkin%2C+Victoria%3BLeveille%2C+Richard%3BMarchand%2C+Genevieve%3BSanchez%2C+Pablo+Sobron%3BFavot%2C+Laurent%3BCody%2C+George%3BSteele%2C+Andrew%3Bet.+al.&rft.aulast=Webster&rft.aufirst=Christopher&rft.date=2013-10-18&rft.volume=342&rft.issue=6156&rft.spage=355&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.1242902 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-08-01 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Methane; Data processing; Abundance; Internet DO - http://dx.doi.org/10.1126/science.1242902 ER - TY - NEWS T1 - Amateur Astronomers See Comet ISON AN - 1439917459 JF - UPI Space Daily AU - Dr. Tony Phillips for NASA Science News Y1 - 2013/10/07/ PY - 2013 DA - 2013 Oct 07 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1439917459?accountid=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=Amateur+Astronomers+See+Comet+ISON&rft.au=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2013-10-07&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 - 2013-10-07 ER - TY - NEWS T1 - Long-Stressed Europa Likely Off-Kilter at One Time AN - 1439185584 JF - UPI Space Daily AU - NASA Staff Writers Y1 - 2013/10/04/ PY - 2013 DA - 2013 Oct 04 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1439185584?accountid=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=Long-Stressed+Europa+Likely+Off-Kilter+at+One+Time&rft.au=NASA+Staff+Writers&rft.aulast=NASA+Staff+Writers&rft.aufirst=&rft.date=2013-10-04&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 - 2013-10-04 ER - TY - JOUR T1 - Supervolcanoes within an ancient volcanic province in Arabia Terra, Mars AN - 1447102886; 2013-084959 JF - Nature (London) AU - Michalski, Joseph R AU - Bleacher, Jacob E Y1 - 2013/10/03/ PY - 2013 DA - 2013 Oct 03 SP - 47 EP - 52 PB - Macmillan Journals, London VL - 502 IS - 7469 SN - 0028-0836, 0028-0836 KW - volcanic rocks KW - collapse structures KW - paterae KW - igneous rocks KW - supervolcanoes KW - Mars KW - erosion features KW - layered materials KW - Arabia Terra KW - volcanic features KW - volcanism KW - sulfur cycle KW - climate KW - Martian Highlands KW - degassing KW - sedimentation KW - atmosphere KW - volcanic centers KW - geochemical cycle KW - terrestrial planets KW - pyroclastics KW - planets KW - craters KW - thermokarst KW - volcanoes KW - sulfur KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1447102886?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Supervolcanoes+within+an+ancient+volcanic+province+in+Arabia+Terra%2C+Mars&rft.au=Michalski%2C+Joseph+R%3BBleacher%2C+Jacob+E&rft.aulast=Michalski&rft.aufirst=Joseph&rft.date=2013-10-03&rft.volume=502&rft.issue=7469&rft.spage=47&rft.isbn=&rft.btitle=&rft.title=Nature+%28London%29&rft.issn=00280836&rft_id=info:doi/10.1038%2Fnature12482 L2 - http://www.nature.com/nature/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 50 N1 - Document feature - illus. N1 - Last updated - 2013-10-31 N1 - CODEN - NATUAS N1 - SubjectsTermNotLitGenreText - Arabia Terra; atmosphere; climate; collapse structures; craters; degassing; erosion features; geochemical cycle; igneous rocks; layered materials; Mars; Martian Highlands; paterae; planets; pyroclastics; remote sensing; sedimentation; sulfur; sulfur cycle; supervolcanoes; terrestrial planets; thermokarst; volcanic centers; volcanic features; volcanic rocks; volcanism; volcanoes DO - http://dx.doi.org/10.1038/nature12482 ER - TY - JOUR T1 - Continued slowing of the Ross Ice Shelf and thickening of West Antarctic ice streams AN - 1832630924; 705269-1 AB - As part of the Ross Ice Shelf Geophysical and Glaciological Survey (RIGGS), ice velocities were measured on the Ross Ice Shelf (RIS) during 1973-78. Comparisons of these with velocity estimates at the same locations derived from RADARSAT synthetic aperture radar (SAR) measurements in 1997 and 2009 show velocity reduction in the southeast quadrant of the ice shelf by almost 200 m a (super -1) , with deceleration rates increasing with time. Large areas of ice shelf in this region are lightly grounded, forming an "ice plain" that increases local buttressing of the ice streams. ICESat measurements show this ice plain to be thickening. The observed decrease in ice-shelf velocities implies a total reduction in the mass of ice flowing into the RIS from the West Antarctic ice sheet (WAIS) by nearly equal 23 Gt a (super -1) , shifting the mass balance of the WAIS drainage basin from strongly negative in the 1970s to strongly positive in 2009. The resulting decrease in ice advection should lead to ice-shelf thinning further seaward of the ice plain. This thinning would reduce the lateral drag and back-stress of the shelf ice, further contributing to thinning through an increase in spreading rate. ICESat measurements show recent thinning of most of the freely floating ice shelf. JF - Journal of Glaciology AU - Thomas, R AU - Scheuchl, B AU - Frederick, E AU - Harpold, R AU - Martin, C AU - Rignot, E Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 838 EP - 844 PB - International Glaciological Society, Cambridge VL - 59 IS - 217 SN - 0022-1430, 0022-1430 KW - Antarctica KW - ice streams KW - Ross Ice Shelf KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832630924?accountid=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+Glaciology&rft.atitle=Continued+slowing+of+the+Ross+Ice+Shelf+and+thickening+of+West+Antarctic+ice+streams&rft.au=Thomas%2C+R%3BScheuchl%2C+B%3BFrederick%2C+E%3BHarpold%2C+R%3BMartin%2C+C%3BRignot%2C+E&rft.aulast=Thomas&rft.aufirst=R&rft.date=2013-10-01&rft.volume=59&rft.issue=217&rft.spage=838&rft.isbn=&rft.btitle=&rft.title=Journal+of+Glaciology&rft.issn=00221430&rft_id=info:doi/10.3189%2F2013JoG12J122 L2 - http://www.igsoc.org/journal/ 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 Institute of Geological and Nuclear Sciences Limited (GNS Science), Lower Hutt, New Zealand N1 - Number of references - 29 N1 - Last updated - 2017-01-24 N1 - CODEN - JOGLAO N1 - SubjectsTermNotLitGenreText - Antarctica; ice streams; Ross Ice Shelf DO - http://dx.doi.org/10.3189/2013JoG12J122 ER - TY - JOUR T1 - Graphene chemical sensors for heliophysics applications AN - 1671530415; 18688711 AB - Graphene is a single layer of carbon atoms that offer a unique set of advantages as a chemical sensor due to a number of its inherent properties. Graphene has been explored as a gas sensor for a variety of gases, and molecular sensitivity has been demonstrated by measuring the change in electrical properties due to the adsorption of target species (Schedin, F.; Geim, A.K.; Morozov, S.V.; Hill, E.W.; Blake, P.; Katsnelson, M.I.; Novoselov, K.S. Nat. Mater 2007, 6, 652-655. doi:10.1038/nmat1967). In this paper, we discuss the development of an array of chemical sensors based on graphene and its relevance to plasma physics due to its sensitivity to radical species such as O+, H+ and the corresponding neutrals. We briefly discuss the great impact such sensors will have on a number of heliophysics applications such as ground-based manifestations of space weather. JF - Radiation Effects and Defects in Solids AU - Sultana, Mahmooda AU - Herrero, Fred AU - Khazanov, George AD - Detector Systems Branch and Geospace Physics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA Y1 - 2013/10/01/ PY - 2013 DA - 2013 Oct 01 SP - 805 EP - 811 PB - Taylor & Francis Group Ltd., 2 Park Square Oxford OX14 4RN United Kingdom VL - 168 IS - 10 SN - 1042-0150, 1042-0150 KW - Solid State and Superconductivity Abstracts (SO); METADEX (MD); Advanced Polymers Abstracts (EP); Environmental Engineering Abstracts (EN); Composites Industry Abstracts (ED); Engineered Materials Abstracts, Ceramics (EC) KW - Carbon KW - Graphene KW - Space weather KW - Gas sensors KW - Electrical properties KW - Arrays KW - Radicals KW - Chemical sensors UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1671530415?accountid=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=Radiation+Effects+and+Defects+in+Solids&rft.atitle=Graphene+chemical+sensors+for+heliophysics+applications&rft.au=Sultana%2C+Mahmooda%3BHerrero%2C+Fred%3BKhazanov%2C+George&rft.aulast=Sultana&rft.aufirst=Mahmooda&rft.date=2013-10-01&rft.volume=168&rft.issue=10&rft.spage=805&rft.isbn=&rft.btitle=&rft.title=Radiation+Effects+and+Defects+in+Solids&rft.issn=10420150&rft_id=info:doi/10.1080%2F10420150.2013.831853 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-12-01 N1 - Last updated - 2015-04-09 DO - http://dx.doi.org/10.1080/10420150.2013.831853 ER - TY - JOUR T1 - Moisture flux changes and trends for the entire Arctic in 2003-2011 derived from EOS Aqua data AN - 1656036382; 2014-009600 AB - The Arctic sea ice acts as a barrier between the ocean and lower atmosphere, reducing the exchange of heat and moisture. In recent years the ice pack has undergone many changes, in particular a rapid reduction in sea ice extent and compactness in summer and autumn. This, along with modeling studies, would cause one to believe that the moisture flux would be increasing. We estimate the daily moisture flux from 2003 to 2011 using geophysical data from multiple sensors onboard NASA's Aqua satellite, taking advantage of observations being collected at the same time and along the same track. Our findings show the moisture flux, averaged over the entire Arctic, has had large interannual variations, with smallest fluxes in 2010, 2003, and 2004, and largest ones in 2007, 2008, and 2005. Increases in air specific humidity tend to reduce the moisture flux, whereas the decrease in sea ice cover tends to increase the flux. Statistically significant seasonal decreasing trends are seen in December, January, and February because of the dominating effect of increase in 2 m air specific humidity increasing, reducing the surface-air specific humidity difference by -0.0547 kg/kg in the Kara/Barents Seas, E. Greenland Sea, and Baffin Bay regions where there is some open water year round. Our results also show that the contribution of the sea ice zone to the total moisture flux (from the open ocean and sea ice zone) has increased by 3.6% because the amount of open water within the sea ice zone has increased by 4.3%. Abstract Copyright (2013), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Oceans AU - Boisvert, Linette N AU - Markus, Thorsten AU - Vihma, Timo Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 5829 EP - 5843 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 10 SN - 2169-9275, 2169-9275 KW - sea water KW - monthly variations KW - annual variations KW - moisture KW - Arctic region KW - sea ice KW - atmosphere KW - air-sea interface KW - satellite methods KW - climate change KW - temperature KW - humidity KW - Earth Observing System KW - transport KW - ice KW - climate effects KW - Arctic Ocean KW - seasonal variations KW - remote sensing KW - boundary layer KW - 07:Oceanography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656036382?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Moisture+flux+changes+and+trends+for+the+entire+Arctic+in+2003-2011+derived+from+EOS+Aqua+data&rft.au=Boisvert%2C+Linette+N%3BMarkus%2C+Thorsten%3BVihma%2C+Timo&rft.aulast=Boisvert&rft.aufirst=Linette&rft.date=2013-10-01&rft.volume=118&rft.issue=10&rft.spage=5829&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Oceans&rft.issn=21699275&rft_id=info:doi/10.1002%2Fjgrc.20414 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 - 2014-01-01 N1 - Number of references - 53 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables, sketch map N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - air-sea interface; annual variations; Arctic Ocean; Arctic region; atmosphere; boundary layer; climate change; climate effects; Earth Observing System; humidity; ice; moisture; monthly variations; remote sensing; satellite methods; sea ice; sea water; seasonal variations; temperature; transport DO - http://dx.doi.org/10.1002/jgrc.20414 ER - TY - JOUR T1 - Surface ocean pCO (sub 2) seasonality and sea-air CO (sub 2) flux estimates for the North American east coast AN - 1656033625; 2014-009576 AB - Underway and in situ observations of surface ocean pCO (sub 2) , combined with satellite data, were used to develop pCO (sub 2) regional algorithms to analyze the seasonal and interannual variability of surface ocean pCO (sub 2) and sea-air CO (sub 2) flux for five physically and biologically distinct regions of the eastern North American continental shelf: the South Atlantic Bight (SAB), the Mid-Atlantic Bight (MAB), the Gulf of Maine (GoM), Nantucket Shoals and Georges Bank (NS+GB), and the Scotian Shelf (SS). Temperature and dissolved inorganic carbon variability are the most influential factors driving the seasonality of pCO (sub 2) . Estimates of the sea-air CO (sub 2) flux were derived from the available pCO (sub 2) data, as well as from the pCO (sub 2) reconstructed by the algorithm. Two different gas exchange parameterizations were used. The SS, GB+NS, MAB, and SAB regions are net sinks of atmospheric CO (sub 2) while the GoM is a weak source. The estimates vary depending on the use of surface ocean pCO (sub 2) from the data or algorithm, as well as with the use of the two different gas exchange parameterizations. Most of the regional estimates are in general agreement with previous studies when the range of uncertainty and interannual variability are taken into account. According to the algorithm, the average annual uptake of atmospheric CO (sub 2) by eastern North American continental shelf waters is found to be between -3.4 and -5.4 Tg C yr (super -1) (areal average of -0.7 to -1.0 mol CO (sub 2) m (super -2) yr (super -1) ) over the period 2003-2010. Abstract Copyright (2013), . The Authors. Journal of Geophysical Research: Oceans published by Wiley on behalf of the American Geophysical Union. JF - Journal of Geophysical Research: Oceans AU - Signorini, Sergio R AU - Mannino, Antonio AU - Najjar, Raymond G, Jr AU - Friedrichs, Marjorie A M AU - Cai, Wei-Jun AU - Salisbury, Joe AU - Wang, Zhaohui Aleck AU - Thomas, Helmuth AU - Shadwick, Elizabeth Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 5439 EP - 5460 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 10 SN - 2169-9275, 2169-9275 KW - North America KW - sea water KW - in situ KW - annual variations KW - statistical analysis KW - solutes KW - atmosphere KW - air-sea interface KW - salinity KW - satellite methods KW - temperature KW - carbon dioxide KW - spatial variations KW - sensitivity analysis KW - partial pressure KW - carbon KW - alkalinity KW - seasonal variations KW - algorithms KW - North Atlantic KW - Atlantic Ocean KW - remote sensing KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656033625?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Surface+ocean+pCO+%28sub+2%29+seasonality+and+sea-air+CO+%28sub+2%29+flux+estimates+for+the+North+American+east+coast&rft.au=Signorini%2C+Sergio+R%3BMannino%2C+Antonio%3BNajjar%2C+Raymond+G%2C+Jr%3BFriedrichs%2C+Marjorie+A+M%3BCai%2C+Wei-Jun%3BSalisbury%2C+Joe%3BWang%2C+Zhaohui+Aleck%3BThomas%2C+Helmuth%3BShadwick%2C+Elizabeth&rft.aulast=Signorini&rft.aufirst=Sergio&rft.date=2013-10-01&rft.volume=118&rft.issue=10&rft.spage=5439&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Oceans&rft.issn=21699275&rft_id=info:doi/10.1002%2Fjgrc.20369 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 - 2014-01-01 N1 - Number of references - 56 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables, sketch map N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - air-sea interface; algorithms; alkalinity; annual variations; Atlantic Ocean; atmosphere; carbon; carbon dioxide; in situ; North America; North Atlantic; partial pressure; remote sensing; salinity; satellite methods; sea water; seasonal variations; sensitivity analysis; solutes; spatial variations; statistical analysis; temperature DO - http://dx.doi.org/10.1002/jgrc.20369 ER - TY - JOUR T1 - Hyporheic zone denitrification; controls on effective reaction depth and contribution to whole-stream mass balance AN - 1535206102; 2014-038663 AB - Stream denitrification is thought to be enhanced by hyporheic transport but there is little direct evidence from the field. To investigate at a field site, we injected (super 15) NO (sub 3) (super -) , Br (conservative tracer), and SF (sub 6) (gas exchange tracer) and compared measured whole-stream denitrification with in situ hyporheic denitrification in shallow and deeper flow paths of contrasting geomorphic units. Hyporheic denitrification accounted for between 1 and 200% of whole-stream denitrification. The reaction rate constant was positively related to hyporheic exchange rate (greater substrate delivery), concentrations of substrates DOC and nitrate, microbial denitrifier abundance (nirS), and measures of granular surface area and presence of anoxic microzones. The dimensionless product of the reaction rate constant and hyporheic residence time, lambda (sub hz) tau (sub hz) define a Damkohler number, Da (sub den-hz) that was optimal in the subset of hyporheic flow paths where Da (sub den-hz) nearly equal 1. Optimal conditions exclude inefficient deep pathways where substrates are used up and also exclude inefficient shallow pathways that require repeated hyporheic entries and exits to complete the reaction. The whole-stream reaction significance, R (sub s) (dimensionless), was quantified by multiplying Da (sub den-hz) by the proportion of stream discharge passing through the hyporheic zone. Together these two dimensionless metrics, one flow-path scale and the other reach-scale, quantify the whole-stream significance of hyporheic denitrification. One consequence is that the effective zone of significant denitrification often differs from the full depth of the hyporheic zone, which is one reason why whole-stream denitrification rates have not previously been explained based on total hyporheic-zone metrics such as hyporheic-zone size or residence time. Abstract Copyright (2013), . American Geophysical Union. All Rights Reserved. JF - Water Resources Research AU - Harvey, Judson W AU - Bohlke, J K AU - Voytek, Mary A AU - Scott, Durelle AU - Tobias, Craig R Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 6298 EP - 6316 PB - American Geophysical Union, Washington, DC VL - 49 IS - 10 SN - 0043-1397, 0043-1397 KW - United States KW - hydrology KW - North America KW - numerical models KW - Illinois KW - Mississippi River basin KW - Iroquois County Illinois KW - surface water KW - halogens KW - hyporheic zone KW - equations KW - bromine KW - transport KW - mass balance KW - denitrification KW - residence time KW - tracers KW - streams KW - Reynolds number KW - Sugar Creek KW - nitrate ion KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1535206102?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Hyporheic+zone+denitrification%3B+controls+on+effective+reaction+depth+and+contribution+to+whole-stream+mass+balance&rft.au=Harvey%2C+Judson+W%3BBohlke%2C+J+K%3BVoytek%2C+Mary+A%3BScott%2C+Durelle%3BTobias%2C+Craig+R&rft.aulast=Harvey&rft.aufirst=Judson&rft.date=2013-10-01&rft.volume=49&rft.issue=10&rft.spage=6298&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1002%2Fwrcr.20492 L2 - http://www.agu.org/journals/wr/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 85 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2014-06-13 N1 - CODEN - WRERAQ N1 - SubjectsTermNotLitGenreText - bromine; denitrification; equations; halogens; hydrology; hyporheic zone; Illinois; Iroquois County Illinois; mass balance; Mississippi River basin; nitrate ion; North America; numerical models; residence time; Reynolds number; streams; Sugar Creek; surface water; tracers; transport; United States DO - http://dx.doi.org/10.1002/wrcr.20492 ER - TY - JOUR T1 - Vesta, vestoids, and the HED meteorites; interconnections and differences based on Dawn Framing Camera observations AN - 1524634740; 688131-4 AB - The Framing Camera (FC) on the Dawn spacecraft provided the first view of 4 Vesta at sufficiently high spatial resolution to enable a detailed correlation of the asteroid's spectral properties with geologic features and with the vestoid (V-type) asteroids and the Howardite-Eucrite-Diogenite (HED) class of meteorites, both of which are believed to originate on Vesta. We combine a spectral analysis of the basin with visible and near-IR spectroscopy of vestoids and with archived data over the same spectral range for HED meteorites. The vestoids are only slightly more akin to the Rheasilvia basin than to Vesta as a whole, suggesting that the crustal material ejected is a well-mixed collection of eucritic and diogenitic materials. The basin itself is more diogenitic, implying Vesta is differentiated and the impact that created Rheasilvia uncovered a mineralogically distinct layer. The Rheasilvia basin exhibits a larger range in pyroxene band strengths than Vesta as a whole, further implying that the basin offers a view into a complex, differentiated protoplanet. The discrepancy between the spectral properties of the HED meteorites and Vesta, in particular the meteorites' deeper pyroxene absorption band and the redder color of the vestoids, can be explained by the abundance of smaller particles on Vesta and by the addition of low-albedo exogenous particles to its surface, which in turn are due to its larger gravity and longer exposure time to impact processing. Solar phase effects are slight and do not explain the spectral discrepancies between the HEDs, Vesta, and the vestoids. Abstract Copyright (2013), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Buratti, B J AU - Dalba, P A AU - Hicks, M D AU - Reddy, V AU - Sykes, M V AU - McCord, T B AU - O'Brien, D P AU - Pieters, C M AU - Prettyman, T H AU - McFadden, L A AU - Nathues, Andreas AU - Le Corre, Lucille AU - Marchi, S AU - Raymond, Carol AU - Russell, Chris Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 1991 EP - 2003 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 10 SN - 2169-9097, 2169-9097 KW - albedo KW - near-infrared spectra KW - Dawn Framing Camera KW - stony meteorites KW - asteroids KW - Vesta Asteroid KW - Rheasilvia Basin KW - HED meteorites KW - diogenite KW - achondrites KW - observations KW - meteorites KW - howardite KW - spacecraft KW - eucrite KW - spectra KW - vestoids KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1524634740?accountid=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+Planets&rft.atitle=Vesta%2C+vestoids%2C+and+the+HED+meteorites%3B+interconnections+and+differences+based+on+Dawn+Framing+Camera+observations&rft.au=Buratti%2C+B+J%3BDalba%2C+P+A%3BHicks%2C+M+D%3BReddy%2C+V%3BSykes%2C+M+V%3BMcCord%2C+T+B%3BO%27Brien%2C+D+P%3BPieters%2C+C+M%3BPrettyman%2C+T+H%3BMcFadden%2C+L+A%3BNathues%2C+Andreas%3BLe+Corre%2C+Lucille%3BMarchi%2C+S%3BRaymond%2C+Carol%3BRussell%2C+Chris&rft.aulast=Buratti&rft.aufirst=B&rft.date=2013-10-01&rft.volume=118&rft.issue=10&rft.spage=1991&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2Fjgre.20152 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9100 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 - 48 N1 - PubXState - DC N1 - Document feature - illus. incl. table N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - achondrites; albedo; asteroids; Dawn Framing Camera; diogenite; eucrite; HED meteorites; howardite; meteorites; near-infrared spectra; observations; Rheasilvia Basin; spacecraft; spectra; stony meteorites; Vesta Asteroid; vestoids DO - http://dx.doi.org/10.1002/jgre.20152 ER - TY - JOUR T1 - Evidence for perchlorates and the origin of chlorinated hydrocarbons detected by SAM at the Rocknest aeolian deposit in Gale Crater AN - 1524632023; 688131-1 AB - A single scoop of the Rocknest aeolian deposit was sieved (< 150 mu m), and four separate sample portions, each with a mass of nearly equal 50 mg, were delivered to individual cups inside the Sample Analysis at Mars (SAM) instrument by the Mars Science Laboratory rover's sample acquisition system. The samples were analyzed separately by the SAM pyrolysis evolved gas and gas chromatograph mass spectrometer analysis modes. Several chlorinated hydrocarbons including chloromethane, dichloromethane, trichloromethane, a chloromethylpropene, and chlorobenzene were identified by SAM above background levels with abundances of nearly equal 0.01 to 2.3 nmol. The evolution of the chloromethanes observed during pyrolysis is coincident with the increase in O (sub 2) released from the Rocknest sample and the decomposition of a product of N-methyl-N-(tert-butyldimethylsilyl)-trifluoroacetamide (MTBSTFA), a chemical whose vapors were released from a derivatization cup inside SAM. The best candidate for the oxychlorine compounds in Rocknest is a hydrated calcium perchlorate (Ca(ClO (sub 4) ) (sub 2) .nH (sub 2) O), based on the temperature release of O (sub 2) that correlates with the release of the chlorinated hydrocarbons measured by SAM, although other chlorine-bearing phases are being considered. Laboratory analog experiments suggest that the reaction of Martian chlorine from perchlorate decomposition with terrestrial organic carbon from MTBSTFA during pyrolysis can explain the presence of three chloromethanes and a chloromethylpropene detected by SAM. Chlorobenzene may be attributed to reactions of Martian chlorine released during pyrolysis with terrestrial benzene or toluene derived from 2,6-diphenylphenylene oxide (Tenax) on the SAM hydrocarbon trap. At this time we do not have definitive evidence to support a nonterrestrial carbon source for these chlorinated hydrocarbons, nor do we exclude the possibility that future SAM analyses will reveal the presence of organic compounds native to the Martian regolith. Abstract Copyright (2013), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Glavin, Daniel P AU - Freissinet, Caroline AU - Miller, Kristen E AU - Eigenbrode, Jennifer L AU - Brunner, Anna E AU - Buch, Arnaud AU - Sutter, Brad AU - Archer, P Douglas, Jr AU - Atreya, Sushil K AU - Brinckerhoff, William B AU - Cabane, Michel AU - Coll, Patrice AU - Conrad, Pamela G AU - Coscia, David AU - Dworkin, Jason P AU - Franz, Heather B AU - Grotzinger, John P AU - Leshin, Laurie A AU - Martin, Mildred G AU - McKay, Christopher AU - Ming, Douglas W AU - Navarro-Gonzalez, Rafael AU - Pavlov, Alexander AU - Steele, Andrew AU - Summons, Roger E AU - Szopa, Cyril AU - Teinturier, Samuel AU - Mahaffy, Paul R Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 1955 EP - 1973 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 10 SN - 2169-9097, 2169-9097 KW - eolian features KW - chlorine KW - chlorinated hydrocarbons KW - chlorobenzene KW - toluene KW - halogens KW - Mars KW - analysis KW - benzene KW - perchlorate KW - Gale Crater KW - terrestrial planets KW - Mars Exploration Rover KW - Rocknest soil KW - planets KW - organic compounds KW - sampling KW - pyrolysis KW - hydrocarbons KW - halogenated hydrocarbons KW - regolith KW - fluoroacetamide KW - aromatic hydrocarbons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1524632023?accountid=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+Planets&rft.atitle=Evidence+for+perchlorates+and+the+origin+of+chlorinated+hydrocarbons+detected+by+SAM+at+the+Rocknest+aeolian+deposit+in+Gale+Crater&rft.au=Glavin%2C+Daniel+P%3BFreissinet%2C+Caroline%3BMiller%2C+Kristen+E%3BEigenbrode%2C+Jennifer+L%3BBrunner%2C+Anna+E%3BBuch%2C+Arnaud%3BSutter%2C+Brad%3BArcher%2C+P+Douglas%2C+Jr%3BAtreya%2C+Sushil+K%3BBrinckerhoff%2C+William+B%3BCabane%2C+Michel%3BColl%2C+Patrice%3BConrad%2C+Pamela+G%3BCoscia%2C+David%3BDworkin%2C+Jason+P%3BFranz%2C+Heather+B%3BGrotzinger%2C+John+P%3BLeshin%2C+Laurie+A%3BMartin%2C+Mildred+G%3BMcKay%2C+Christopher%3BMing%2C+Douglas+W%3BNavarro-Gonzalez%2C+Rafael%3BPavlov%2C+Alexander%3BSteele%2C+Andrew%3BSummons%2C+Roger+E%3BSzopa%2C+Cyril%3BTeinturier%2C+Samuel%3BMahaffy%2C+Paul+R&rft.aulast=Glavin&rft.aufirst=Daniel&rft.date=2013-10-01&rft.volume=118&rft.issue=10&rft.spage=1955&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2Fjgre.20144 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9100 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 - 110 N1 - PubXState - DC N1 - Document feature - illus. incl. 6 tables N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - analysis; aromatic hydrocarbons; benzene; chlorinated hydrocarbons; chlorine; chlorobenzene; eolian features; fluoroacetamide; Gale Crater; halogenated hydrocarbons; halogens; hydrocarbons; Mars; Mars Exploration Rover; organic compounds; perchlorate; planets; pyrolysis; regolith; Rocknest soil; sampling; terrestrial planets; toluene DO - http://dx.doi.org/10.1002/jgre.20144 ER - TY - JOUR T1 - Search On for Climate Clues Across Southern U.S. Skies AN - 1516748717; 19561156 AB - NASA research aircraft began flights on August 12 from Houston's Ellington Field to investigate how the combination of summer storms and rising air pollution from wildfires, cities, and other sources can change our climate. JF - Earth Observer AU - Cole, Stephen AD - NASA Headquarters, stephen.e.cole@nasa.gov Y1 - 2013/10// PY - 2013 DA - Oct 2013 SP - 31 PB - EOS Project Science Office, NASA Goddard Space Flight Center Greenbelt MD 20771 USA VL - 25 IS - 5 KW - Pollution Abstracts KW - Air pollution KW - Cities KW - USA KW - Wildfire KW - Summer KW - Storms KW - USA, Texas, Houston KW - P 0000:AIR POLLUTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1516748717?accountid=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=Earth+Observer&rft.atitle=Search+On+for+Climate+Clues+Across+Southern+U.S.+Skies&rft.au=Cole%2C+Stephen&rft.aulast=Cole&rft.aufirst=Stephen&rft.date=2013-10-01&rft.volume=25&rft.issue=5&rft.spage=31&rft.isbn=&rft.btitle=&rft.title=Earth+Observer&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-04-01 N1 - Last updated - 2015-07-23 N1 - SubjectsTermNotLitGenreText - Air pollution; Cities; Wildfire; Summer; Storms; USA; USA, Texas, Houston ER - TY - JOUR T1 - Alkyd paints in art: Characterization using integrated mass spectrometry AN - 1505345155; 19246618 AB - Alkyd resins have been commonly used as binders in artist paints since the 1940s. The characterization of alkyds in samples from artworks can help to solve attribution and dating issues, investigate decay processes, and contribute to the planning of conservation strategies. Being able to assess the components of industrially formulated paint materials and to differentiate between different trademarks and producers is extremely interesting and requires multi-analytical approaches. JF - Analytica Chimica Acta AU - Nasa, Jacopo AU - Degano, Ilaria AU - Modugno, Francesca AU - Colombini, Maria Y1 - 2013/10/01/ PY - 2013 DA - 2013 Oct 01 SP - 64 EP - 80 PB - Elsevier B.V., The Boulevard Kidlington Oxford OX5 1GB United Kingdom VL - 797 SN - 0003-2670, 0003-2670 KW - Sustainability Science Abstracts; Environment Abstracts KW - Alkyd resins KW - Gas chromatography/mass spectrometry KW - High performance liquid chromatography KW - Electrospray ionization-quadrupole-time of flight mass spectrometry KW - Flow injection analysis KW - Resins KW - Mass spectrometry KW - Conservation KW - Decay KW - Paints KW - M3 1010:Issues in Sustainable Development KW - ENA 21:Wildlife UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1505345155?accountid=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=Analytica+Chimica+Acta&rft.atitle=Alkyd+paints+in+art%3A+Characterization+using+integrated+mass+spectrometry&rft.au=Nasa%2C+Jacopo%3BDegano%2C+Ilaria%3BModugno%2C+Francesca%3BColombini%2C+Maria&rft.aulast=Nasa&rft.aufirst=Jacopo&rft.date=2013-10-01&rft.volume=797&rft.issue=&rft.spage=64&rft.isbn=&rft.btitle=&rft.title=Analytica+Chimica+Acta&rft.issn=00032670&rft_id=info:doi/10.1016%2Fj.aca.2013.08.021 L2 - http://www.sciencedirect.com/science/article/pii/S0003267013011136 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-03-01 N1 - Last updated - 2015-09-03 N1 - SubjectsTermNotLitGenreText - Resins; Conservation; Mass spectrometry; Decay; Paints DO - http://dx.doi.org/10.1016/j.aca.2013.08.021 ER - TY - JOUR T1 - Assessing the role of alkaline soils on the carbon cycle at a playa site AN - 1500780743; 18668825 AB - Alkaline soils occupy approximately 5 % of the Earth's land surface (7 million km), and this may increase due to the global trend towards increasing desertification, yet the extent to which these soils modulate carbon dynamics on regional and global scales is inadequately studied and poorly understood. Railroad Valley (RRV) playa (Nevada, USA) is a semi-arid playa with highly alkaline soils (pH > 10) and no vegetation. The extreme, alkaline environment and absence of vascular vegetation make RRV an ideal site to investigate the role of physiochemical processes of soil-atmosphere CO sub(2) exchange. Both field and laboratory investigations were conducted. This work shows how the atmospheric CO sub(2) mixing ratio decreases at nighttime at RRV playa to a value well below the average global background CO sub(2) concentration. Laboratory investigations using soil samples collected at RRV playa confirmed that CO sub(2) uptake by RRV playa soils occurs when temperatures are decreased. Both field and laboratory studies suggest that the alkaline RRV soil acts as a CO sub(2) reservoir during colder periods, such as at nighttime. These results highlight the importance of investigating carbon dynamics in previously understudied environments. Given how little information is available on the CO sub(2) flux in desert and semi-arid alkaline ecosystems lacking vegetation, our findings draw attention to these environments as becoming increasingly important for carbon fluxes on regional and global scales. JF - Environmental Earth Sciences AU - Yates, Emma L AU - Detweiler, Angela M AU - Iraci, Laura T AU - Bebout, Brad M AU - McKay, Christopher P AU - Schiro, Kathleen AU - Sheffner, Edwin J AU - Kelley, Cheryl A AU - Tadic, Jovan M AU - Loewenstein, Max AD - NASA Ames Research Center, Moffett Field, CA, 94035, USA, emma.l.yates@nasa.gov Y1 - 2013/10// PY - 2013 DA - Oct 2013 SP - 1047 EP - 1056 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 70 IS - 3 SN - 1866-6280, 1866-6280 KW - Environment Abstracts KW - Soil KW - Desertification KW - Ecosystems KW - Semiarid environments KW - Playas KW - Vegetation KW - Alkaline soils KW - USA, Nevada KW - Carbon dioxide KW - Reservoirs KW - ENA 01:Air Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1500780743?accountid=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=Environmental+Earth+Sciences&rft.atitle=Assessing+the+role+of+alkaline+soils+on+the+carbon+cycle+at+a+playa+site&rft.au=Yates%2C+Emma+L%3BDetweiler%2C+Angela+M%3BIraci%2C+Laura+T%3BBebout%2C+Brad+M%3BMcKay%2C+Christopher+P%3BSchiro%2C+Kathleen%3BSheffner%2C+Edwin+J%3BKelley%2C+Cheryl+A%3BTadic%2C+Jovan+M%3BLoewenstein%2C+Max&rft.aulast=Yates&rft.aufirst=Emma&rft.date=2013-10-01&rft.volume=70&rft.issue=3&rft.spage=1047&rft.isbn=&rft.btitle=&rft.title=Environmental+Earth+Sciences&rft.issn=18666280&rft_id=info:doi/10.1007%2Fs12665-012-2194-x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-02-01 N1 - Number of references - 31 N1 - Last updated - 2015-07-23 N1 - SubjectsTermNotLitGenreText - Soil; Desertification; Ecosystems; Semiarid environments; Vegetation; Playas; Alkaline soils; Carbon dioxide; Reservoirs; USA, Nevada DO - http://dx.doi.org/10.1007/s12665-012-2194-x ER - TY - JOUR T1 - Recursive plasma wake formation on the Moon and its effect on polar volatiles AN - 1492590252; 2014-005996 JF - Icarus AU - Zimmerman, M I AU - Farrell, W M AU - Stubbs, T J Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 992 EP - 998 PB - Elsevier, New York, NY VL - 226 IS - 1 SN - 0019-1035, 0019-1035 KW - water KW - polar regions KW - plasma KW - impact features KW - Moon KW - solar wind KW - electrical field KW - simulation KW - ions KW - lunar craters KW - volatiles KW - topography KW - impact craters KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1492590252?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Recursive+plasma+wake+formation+on+the+Moon+and+its+effect+on+polar+volatiles&rft.au=Zimmerman%2C+M+I%3BFarrell%2C+W+M%3BStubbs%2C+T+J&rft.aulast=Zimmerman&rft.aufirst=M&rft.date=2013-10-01&rft.volume=226&rft.issue=1&rft.spage=992&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.06.013 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 32 N1 - PubXState - NY N1 - Document feature - illus. N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-01-30 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - electrical field; impact craters; impact features; ions; lunar craters; Moon; plasma; polar regions; simulation; solar wind; topography; volatiles; water DO - http://dx.doi.org/10.1016/j.icarus.2013.06.013 ER - TY - JOUR T1 - Analysis of Saturn's thermal emission at 2.2-cm wavelength; spatial distribution of ammonia vapor AN - 1492589925; 2014-005973 JF - Icarus AU - Laraia, A L AU - Ingersoll, A P AU - Janssen, M A AU - Gulkis, S AU - Oyafuso, F AU - Allison, M Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 641 EP - 654 PB - Elsevier, New York, NY VL - 226 IS - 1 SN - 0019-1035, 0019-1035 KW - clouds KW - ammonium KW - brightness temperature KW - atmosphere KW - mapping KW - troposphere KW - convection KW - RADAR instrument KW - giant planets KW - gases KW - microwave methods KW - spatial distribution KW - Saturn KW - planets KW - Cassini-Huygens Mission KW - thermal emission KW - storms KW - spectra KW - outer planets KW - latitude KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1492589925?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Analysis+of+Saturn%27s+thermal+emission+at+2.2-cm+wavelength%3B+spatial+distribution+of+ammonia+vapor&rft.au=Laraia%2C+A+L%3BIngersoll%2C+A+P%3BJanssen%2C+M+A%3BGulkis%2C+S%3BOyafuso%2C+F%3BAllison%2C+M&rft.aulast=Laraia&rft.aufirst=A&rft.date=2013-10-01&rft.volume=226&rft.issue=1&rft.spage=641&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.06.017 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 43 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2014-01-30 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - ammonium; atmosphere; brightness temperature; Cassini-Huygens Mission; clouds; convection; gases; giant planets; latitude; mapping; microwave methods; outer planets; planets; RADAR instrument; Saturn; spatial distribution; spectra; storms; thermal emission; troposphere DO - http://dx.doi.org/10.1016/j.icarus.2013.06.017 ER - TY - JOUR T1 - Thermal properties, sizes, and size distribution of Jupiter-family cometary nuclei AN - 1492589840; 2014-006005 JF - Icarus AU - Fernandez, Y R AU - Kelley, M S AU - Lamy, P L AU - Toth, I AU - Groussin, O AU - Lisse, C M AU - A'Hearn, M F AU - Bauer, J M AU - Campins, H AU - Fitzsimmons, A AU - Licandro, J AU - Lowry, S C AU - Meech, K J AU - Pittichova, J AU - Reach, W T AU - Snodgrass, C AU - Weaver, H A Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 1138 EP - 1170 PB - Elsevier, New York, NY VL - 226 IS - 1 SN - 0019-1035, 0019-1035 KW - thermal inertia KW - power law KW - telescope methods KW - Spitzer Space Telescope KW - thermal properties KW - statistical analysis KW - standard deviation KW - data processing KW - cometary nuclei KW - Survey of the Ensemble Physical Properties of Cometary Nuclei KW - size KW - infrared spectra KW - size distribution KW - physical properties KW - photometry KW - SEPPCoN KW - comets KW - thermal emission KW - surveys KW - Jupiter-family comets KW - spectra KW - image analysis KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1492589840?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Thermal+properties%2C+sizes%2C+and+size+distribution+of+Jupiter-family+cometary+nuclei&rft.au=Fernandez%2C+Y+R%3BKelley%2C+M+S%3BLamy%2C+P+L%3BToth%2C+I%3BGroussin%2C+O%3BLisse%2C+C+M%3BA%27Hearn%2C+M+F%3BBauer%2C+J+M%3BCampins%2C+H%3BFitzsimmons%2C+A%3BLicandro%2C+J%3BLowry%2C+S+C%3BMeech%2C+K+J%3BPittichova%2C+J%3BReach%2C+W+T%3BSnodgrass%2C+C%3BWeaver%2C+H+A&rft.aulast=Fernandez&rft.aufirst=Y&rft.date=2013-10-01&rft.volume=226&rft.issue=1&rft.spage=1138&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.07.021 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 89 N1 - PubXState - NY N1 - Document feature - illus. incl. 9 tables N1 - Last updated - 2014-01-30 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - cometary nuclei; comets; data processing; image analysis; infrared spectra; Jupiter-family comets; photometry; physical properties; power law; SEPPCoN; size; size distribution; spectra; Spitzer Space Telescope; standard deviation; statistical analysis; Survey of the Ensemble Physical Properties of Cometary Nuclei; surveys; telescope methods; thermal emission; thermal inertia; thermal properties DO - http://dx.doi.org/10.1016/j.icarus.2013.07.021 ER - TY - JOUR T1 - Comparing Dawn, Hubble Space Telescope, and ground-based interpretations of (4) Vesta AN - 1492589596; 2014-006002 JF - Icarus AU - Reddy, Vishnu AU - Li, Jian-Yang AU - Le Corre, Lucille AU - Scully, Jennifer E C AU - Gaskell, Robert AU - Russell, Christopher T AU - Park, Ryan S AU - Nathues, Andreas AU - Raymond, Carol AU - Gaffey, Michael J AU - Sierks, Holger AU - Becker, Kris J AU - McFadden, Lucy A Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 1103 EP - 1114 PB - Elsevier, New York, NY VL - 226 IS - 1 SN - 0019-1035, 0019-1035 KW - albedo KW - imagery KW - obliquity of the ecliptic KW - Dawn Framing Camera KW - asteroids KW - data processing KW - mapping KW - Dawn Mission KW - infrared spectra KW - photometry KW - topography KW - rotation KW - composition KW - spectra KW - color imagery KW - surface properties KW - Earth-based observations KW - Vesta Asteroid KW - telescope methods KW - weathering KW - light curves KW - space weathering KW - physical properties KW - color KW - Hubble Space Telescope KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1492589596?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Comparing+Dawn%2C+Hubble+Space+Telescope%2C+and+ground-based+interpretations+of+%284%29+Vesta&rft.au=Reddy%2C+Vishnu%3BLi%2C+Jian-Yang%3BLe+Corre%2C+Lucille%3BScully%2C+Jennifer+E+C%3BGaskell%2C+Robert%3BRussell%2C+Christopher+T%3BPark%2C+Ryan+S%3BNathues%2C+Andreas%3BRaymond%2C+Carol%3BGaffey%2C+Michael+J%3BSierks%2C+Holger%3BBecker%2C+Kris+J%3BMcFadden%2C+Lucy+A&rft.aulast=Reddy&rft.aufirst=Vishnu&rft.date=2013-10-01&rft.volume=226&rft.issue=1&rft.spage=1103&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.07.019 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 66 N1 - PubXState - NY N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2014-05-15 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - albedo; asteroids; color; color imagery; composition; data processing; Dawn Framing Camera; Dawn Mission; Earth-based observations; Hubble Space Telescope; imagery; infrared spectra; light curves; mapping; obliquity of the ecliptic; photometry; physical properties; rotation; space weathering; spectra; surface properties; telescope methods; topography; Vesta Asteroid; weathering DO - http://dx.doi.org/10.1016/j.icarus.2013.07.019 ER - TY - JOUR T1 - Thymine and other prebiotic molecules produced from the ultraviolet photo-irradiation of pyrimidine in simple astrophysical ice analogs AN - 1492588856; 2014-007707 AB - The informational subunits of RNA or DNA consist of substituted N-heterocyclic compounds that fall into two groups: those based on purine (C (sub 5) H (sub 4) N (sub 4) ) (adenine and guanine) and those based on pyrimidine (C (sub 4) H (sub 4) N (sub 2) ) (uracil, cytosine, and thymine). Although not yet detected in the interstellar medium, N-heterocycles, including the nucleobase uracil, have been reported in carbonaceous chondrites. Recent laboratory experiments and ab initio calculations have shown that the irradiation of pyrimidine in ices containing H (sub 2) O, NH (sub 3) , or both leads to the abiotic production of substituted pyrimidines, including the nucleobases uracil and cytosine. In this work, we studied the methylation and oxidation of pyrimidine in CH (sub 3) OH:pyrimidine, H (sub 2) O:CH (sub 3) OH:pyrimidine, CH (sub 4) :pyrimidine, and H (sub 2) O:CH (sub 4) :pyrimidine ices irradiated with UV photons under astrophysically relevant conditions. The nucleobase thymine was detected in the residues from some of the mixtures. Our results suggest that the abundance of abiotic thymine produced by ice photolysis and delivered to the early Earth may have been significantly lower than that of uracil. Insofar as the delivery of extraterrestrial molecules was important for early biological chemistry on early Earth, these results suggest that there was more uracil than thymine available for emergent life, a scenario consistent with the RNA world hypothesis. JF - Astrobiology AU - Materese, Christopher K AU - Nuevo, Michel AU - Bera, Partha P AU - Lee, Timothy J AU - Sandford, Scott A Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 948 EP - 962 PB - Mary Ann Liebert, Larchmont, NY VL - 13 IS - 10 SN - 1531-1074, 1531-1074 KW - methylation KW - irradiation KW - aliphatic hydrocarbons KW - life origin KW - electromagnetic radiation KW - ice KW - alcohols KW - pyrimidine KW - water KW - experimental studies KW - methane KW - biochemistry KW - thymine KW - oxidation KW - liquid chromatograms KW - photochemistry KW - alkanes KW - ultraviolet radiation KW - methanol KW - organic compounds KW - nucleic acids KW - comets KW - RNA KW - ion chromatograms KW - photolysis KW - chromatograms KW - hydrocarbons KW - DNA KW - 08:General paleontology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1492588856?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Astrobiology&rft.atitle=Thymine+and+other+prebiotic+molecules+produced+from+the+ultraviolet+photo-irradiation+of+pyrimidine+in+simple+astrophysical+ice+analogs&rft.au=Materese%2C+Christopher+K%3BNuevo%2C+Michel%3BBera%2C+Partha+P%3BLee%2C+Timothy+J%3BSandford%2C+Scott+A&rft.aulast=Materese&rft.aufirst=Christopher&rft.date=2013-10-01&rft.volume=13&rft.issue=10&rft.spage=948&rft.isbn=&rft.btitle=&rft.title=Astrobiology&rft.issn=15311074&rft_id=info:doi/10.1089%2Fast.2013.1044 L2 - http://www.liebertpub.com/publication.aspx?pub_id=99 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 49 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2014-01-30 N1 - SubjectsTermNotLitGenreText - alcohols; aliphatic hydrocarbons; alkanes; biochemistry; chromatograms; comets; DNA; electromagnetic radiation; experimental studies; hydrocarbons; ice; ion chromatograms; irradiation; life origin; liquid chromatograms; methane; methanol; methylation; nucleic acids; organic compounds; oxidation; photochemistry; photolysis; pyrimidine; RNA; thymine; ultraviolet radiation; water DO - http://dx.doi.org/10.1089/ast.2013.1044 ER - TY - JOUR T1 - Insolation on exoplanets with eccentricity and obliquity AN - 1492588678; 2014-005981 JF - Icarus AU - Dobrovolskis, Anthony R Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 760 EP - 776 PB - Elsevier, New York, NY VL - 226 IS - 1 SN - 0019-1035, 0019-1035 KW - obliquity of the ecliptic KW - extrasolar planets KW - synchronous rotation KW - polar caps KW - ice caps KW - eccentricity KW - terrestrial planets KW - planets KW - habitat KW - resonance KW - rotation KW - Mercury Planet KW - insolation KW - climate KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1492588678?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+on+exoplanets+with+eccentricity+and+obliquity&rft.au=Dobrovolskis%2C+Anthony+R&rft.aulast=Dobrovolskis&rft.aufirst=Anthony&rft.date=2013-10-01&rft.volume=226&rft.issue=1&rft.spage=760&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.06.026 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 78 N1 - PubXState - NY N1 - Document feature - illus. N1 - Last updated - 2014-01-30 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - climate; eccentricity; extrasolar planets; habitat; ice caps; insolation; Mercury Planet; obliquity of the ecliptic; planets; polar caps; resonance; rotation; synchronous rotation; terrestrial planets DO - http://dx.doi.org/10.1016/j.icarus.2013.06.026 ER - TY - JOUR T1 - The opposition effect in Saturn's main rings as seen by Cassini ISS; 1, Morphology of phase functions and dependence on the local optical depth AN - 1492588547; 2014-005970 JF - Icarus AU - Deau, Estelle AU - Dones, Luke AU - Charnoz, Sebastien AU - West, Robert A AU - Brahic, Andre AU - Decriem, Judicael AU - Porco, Carolyn C Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 591 EP - 603 PB - Elsevier, New York, NY VL - 226 IS - 1 SN - 0019-1035, 0019-1035 KW - Imaging Science Subsystem KW - opposition effect KW - imagery KW - data processing KW - calibration KW - giant planets KW - morphology KW - Saturn KW - planets KW - planetary rings KW - Cassini-Huygens Mission KW - optical properties KW - outer planets KW - optical depth KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1492588547?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+1%2C+Morphology+of+phase+functions+and+dependence+on+the+local+optical+depth&rft.au=Deau%2C+Estelle%3BDones%2C+Luke%3BCharnoz%2C+Sebastien%3BWest%2C+Robert+A%3BBrahic%2C+Andre%3BDecriem%2C+Judicael%3BPorco%2C+Carolyn+C&rft.aulast=Deau&rft.aufirst=Estelle&rft.date=2013-10-01&rft.volume=226&rft.issue=1&rft.spage=591&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.01.015 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 65 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-05-15 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - calibration; Cassini-Huygens Mission; data processing; giant planets; imagery; Imaging Science Subsystem; morphology; opposition effect; optical depth; optical properties; outer planets; planetary rings; planets; Saturn DO - http://dx.doi.org/10.1016/j.icarus.2013.01.015 ER - TY - JOUR T1 - Multiple working hypotheses for the formation of compositional stratigraphy on Mars; insights from the Mawrth Vallis region AN - 1492588538; 2014-005983 JF - Icarus AU - Michalski, Joseph R AU - Niles, P B AU - Cuadros, J AU - Baldridge, A M Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 816 EP - 840 PB - Elsevier, New York, NY VL - 226 IS - 1 SN - 0019-1035, 0019-1035 KW - silicates KW - upwelling KW - magnesium KW - imagery KW - volcanic rocks KW - Noachian KW - igneous rocks KW - optical spectra KW - hydrolysis KW - Mars KW - mapping KW - beidellite KW - Hesperian KW - iron KW - infrared spectra KW - ground water KW - mineral composition KW - Mawrth Vallis KW - stratigraphic units KW - spectra KW - chemical composition KW - montmorillonite KW - chemical weathering KW - alkaline earth metals KW - CRISM KW - THEMIS KW - sulfates KW - paleohydrology KW - OMEGA KW - weathering KW - clay minerals KW - terrestrial planets KW - pyroclastics KW - planets KW - metals KW - sheet silicates KW - leaching KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1492588538?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Multiple+working+hypotheses+for+the+formation+of+compositional+stratigraphy+on+Mars%3B+insights+from+the+Mawrth+Vallis+region&rft.au=Michalski%2C+Joseph+R%3BNiles%2C+P+B%3BCuadros%2C+J%3BBaldridge%2C+A+M&rft.aulast=Michalski&rft.aufirst=Joseph&rft.date=2013-10-01&rft.volume=226&rft.issue=1&rft.spage=816&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.05.024 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 95 N1 - PubXState - NY N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2014-01-30 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - alkaline earth metals; beidellite; chemical composition; chemical weathering; clay minerals; CRISM; ground water; Hesperian; hydrolysis; igneous rocks; imagery; infrared spectra; iron; leaching; magnesium; mapping; Mars; Mawrth Vallis; metals; mineral composition; montmorillonite; Noachian; OMEGA; optical spectra; paleohydrology; planets; pyroclastics; sheet silicates; silicates; spectra; stratigraphic units; sulfates; terrestrial planets; THEMIS; upwelling; volcanic rocks; weathering DO - http://dx.doi.org/10.1016/j.icarus.2013.05.024 ER - TY - JOUR T1 - The temperature and width of an active fissure on Enceladus measured with Cassini VIMS during the 14 April 2012 South Pole flyover AN - 1492588529; 2014-006004 JF - Icarus AU - Goguen, Jay D AU - Buratti, Bonnie J AU - Brown, Robert H AU - Clark, Roger N AU - Nicholson, Philip D AU - Hedman, Matthew M AU - Howell, Robert R AU - Sotin, Christophe AU - Cruikshank, Dale P AU - Baines, Kevin H AU - Lawrence, Kenneth J AU - Spencer, John R AU - Blackburn, David G Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 1128 EP - 1137 PB - Elsevier, New York, NY VL - 226 IS - 1 SN - 0019-1035, 0019-1035 KW - water KW - icy satellites KW - polar regions KW - plumes KW - Baghdad Sulcus KW - fissures KW - water vapor KW - physical models KW - depth KW - temperature KW - infrared spectra KW - sublimation KW - Cassini-Huygens Mission KW - eruptions KW - planetary interiors KW - surface features KW - geysers KW - thermal emission KW - spectra KW - Enceladus Satellite KW - satellites KW - visual and infrared mapping spectrometer KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1492588529?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+temperature+and+width+of+an+active+fissure+on+Enceladus+measured+with+Cassini+VIMS+during+the+14+April+2012+South+Pole+flyover&rft.au=Goguen%2C+Jay+D%3BBuratti%2C+Bonnie+J%3BBrown%2C+Robert+H%3BClark%2C+Roger+N%3BNicholson%2C+Philip+D%3BHedman%2C+Matthew+M%3BHowell%2C+Robert+R%3BSotin%2C+Christophe%3BCruikshank%2C+Dale+P%3BBaines%2C+Kevin+H%3BLawrence%2C+Kenneth+J%3BSpencer%2C+John+R%3BBlackburn%2C+David+G&rft.aulast=Goguen&rft.aufirst=Jay&rft.date=2013-10-01&rft.volume=226&rft.issue=1&rft.spage=1128&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.07.012 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 32 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-05-15 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - Baghdad Sulcus; Cassini-Huygens Mission; depth; Enceladus Satellite; eruptions; fissures; geysers; icy satellites; infrared spectra; physical models; planetary interiors; plumes; polar regions; satellites; spectra; sublimation; surface features; temperature; thermal emission; visual and infrared mapping spectrometer; water; water vapor DO - http://dx.doi.org/10.1016/j.icarus.2013.07.012 ER - TY - JOUR T1 - Lineament azimuths on Europa; implications for obliquity and non-synchronous rotation AN - 1492588338; 2014-005984 JF - Icarus AU - Rhoden, Alyssa Rose AU - Hurford, Terry A Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 841 EP - 859 PB - Elsevier, New York, NY VL - 226 IS - 1 SN - 0019-1035, 0019-1035 KW - orientation KW - icy satellites KW - failures KW - obliquity of the ecliptic KW - lineaments KW - Europa Satellite KW - Bright Plains KW - orbits KW - stress KW - statistical analysis KW - precession KW - Galilean satellites KW - strike-slip faults KW - tides KW - cracks KW - rotation KW - ice KW - tectonics KW - azimuth KW - satellites KW - tension KW - faults KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1492588338?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Lineament+azimuths+on+Europa%3B+implications+for+obliquity+and+non-synchronous+rotation&rft.au=Rhoden%2C+Alyssa+Rose%3BHurford%2C+Terry+A&rft.aulast=Rhoden&rft.aufirst=Alyssa&rft.date=2013-10-01&rft.volume=226&rft.issue=1&rft.spage=841&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.06.029 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 36 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-01-30 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - azimuth; Bright Plains; cracks; Europa Satellite; failures; faults; Galilean satellites; ice; icy satellites; lineaments; obliquity of the ecliptic; orbits; orientation; precession; rotation; satellites; statistical analysis; stress; strike-slip faults; tectonics; tension; tides DO - http://dx.doi.org/10.1016/j.icarus.2013.06.029 ER - TY - JOUR T1 - Lunar topographic roughness maps from Lunar Orbiter Laser Altimeter (LOLA) data; scale dependence and correlation with geologic features and units AN - 1492588001; 2014-005935 JF - Icarus AU - Kreslavsky, Mikhail A AU - Head, James W AU - Neumann, Gregory A AU - Rosenburg, Margaret A AU - Aharonson, Oded AU - Smith, David E AU - Zuber, Maria T Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 52 EP - 66 PB - Elsevier, New York, NY VL - 226 IS - 1 SN - 0019-1035, 0019-1035 KW - Lunar Orbiter Laser Altimeter KW - laser methods KW - impact features KW - secondary craters KW - data processing KW - mapping KW - topography KW - Lunar Reconnaissance Orbiter Mission KW - surface features KW - basins KW - plains KW - algorithms KW - lineaments KW - Moon KW - roughness KW - surface textures KW - altimetry KW - maria KW - ejecta KW - morphology KW - LOLA KW - impact craters KW - cryptomaria KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1492588001?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Lunar+topographic+roughness+maps+from+Lunar+Orbiter+Laser+Altimeter+%28LOLA%29+data%3B+scale+dependence+and+correlation+with+geologic+features+and+units&rft.au=Kreslavsky%2C+Mikhail+A%3BHead%2C+James+W%3BNeumann%2C+Gregory+A%3BRosenburg%2C+Margaret+A%3BAharonson%2C+Oded%3BSmith%2C+David+E%3BZuber%2C+Maria+T&rft.aulast=Kreslavsky&rft.aufirst=Mikhail&rft.date=2013-10-01&rft.volume=226&rft.issue=1&rft.spage=52&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.04.027 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 49 N1 - PubXState - NY N1 - Document feature - illus. N1 - Last updated - 2014-05-15 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - algorithms; altimetry; basins; cryptomaria; data processing; ejecta; impact craters; impact features; laser methods; lineaments; LOLA; Lunar Orbiter Laser Altimeter; Lunar Reconnaissance Orbiter Mission; mapping; maria; Moon; morphology; plains; regolith; roughness; secondary craters; surface features; surface textures; topography DO - http://dx.doi.org/10.1016/j.icarus.2013.04.027 ER - TY - JOUR T1 - A new general circulation model for Mars based on the NCAR community atmosphere model AN - 1492587999; 2014-005953 JF - Icarus AU - Urata, Richard A AU - Toon, Owen B Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 336 EP - 354 PB - Elsevier, New York, NY VL - 226 IS - 1 SN - 0019-1035, 0019-1035 KW - albedo KW - thermal inertia KW - Mars KW - simulation KW - energy balance KW - temperature KW - carbon dioxide KW - sublimation KW - topography KW - National Center for Atmospheric Research KW - sediments KW - diurnal variations KW - boundary layer KW - soils KW - surface properties KW - general circulation models KW - condensation KW - clastic sediments KW - cyclic processes KW - atmosphere KW - terrestrial planets KW - planets KW - dust KW - MOLA KW - NCAR community atmosphere model KW - winds KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1492587999?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+new+general+circulation+model+for+Mars+based+on+the+NCAR+community+atmosphere+model&rft.au=Urata%2C+Richard+A%3BToon%2C+Owen+B&rft.aulast=Urata&rft.aufirst=Richard&rft.date=2013-10-01&rft.volume=226&rft.issue=1&rft.spage=336&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.05.017 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 67 N1 - PubXState - NY N1 - Document feature - illus. incl. 6 tables N1 - Last updated - 2014-01-30 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - albedo; atmosphere; boundary layer; carbon dioxide; clastic sediments; condensation; cyclic processes; diurnal variations; dust; energy balance; general circulation models; Mars; MOLA; National Center for Atmospheric Research; NCAR community atmosphere model; planets; sediments; simulation; soils; sublimation; surface properties; temperature; terrestrial planets; thermal inertia; topography; winds DO - http://dx.doi.org/10.1016/j.icarus.2013.05.017 ER - TY - JOUR T1 - Photolysis of H (sub 2) O-H (sub 2) O (sub 2) mixtures; the destruction of H (sub 2) O (sub 2) AN - 1492587808; 2014-005991 JF - Icarus AU - Loeffler, M J AU - Fama, M AU - Baragiola, R A AU - Carlson, R W Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 945 EP - 950 PB - Elsevier, New York, NY VL - 226 IS - 1 SN - 0019-1035, 0019-1035 KW - water KW - icy satellites KW - experimental studies KW - irradiation KW - Europa Satellite KW - photochemistry KW - Ganymede Satellite KW - rates KW - Galilean satellites KW - ultraviolet radiation KW - temperature KW - infrared spectra KW - laboratory studies KW - absorption KW - Callisto Satellite KW - electromagnetic radiation KW - photolysis KW - ice KW - low temperature KW - hydrogen peroxide KW - spectra KW - Enceladus Satellite KW - satellites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1492587808?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Photolysis+of+H+%28sub+2%29+O-H+%28sub+2%29+O+%28sub+2%29+mixtures%3B+the+destruction+of+H+%28sub+2%29+O+%28sub+2%29&rft.au=Loeffler%2C+M+J%3BFama%2C+M%3BBaragiola%2C+R+A%3BCarlson%2C+R+W&rft.aulast=Loeffler&rft.aufirst=M&rft.date=2013-10-01&rft.volume=226&rft.issue=1&rft.spage=945&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.06.030 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 61 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2014-01-30 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - absorption; Callisto Satellite; electromagnetic radiation; Enceladus Satellite; Europa Satellite; experimental studies; Galilean satellites; Ganymede Satellite; hydrogen peroxide; ice; icy satellites; infrared spectra; irradiation; laboratory studies; low temperature; photochemistry; photolysis; rates; satellites; spectra; temperature; ultraviolet radiation; water DO - http://dx.doi.org/10.1016/j.icarus.2013.06.030 ER - TY - JOUR T1 - Observation of neutral sodium above Mercury during the transit of November 8, 2006 AN - 1492586274; 2014-005943 JF - Icarus AU - Potter, A E AU - Killen, R M AU - Reardon, Kevin P AU - Bida, T A Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 172 EP - 185 PB - Elsevier, New York, NY VL - 226 IS - 1 SN - 0019-1035, 0019-1035 KW - gaseous phase KW - telescope methods KW - Dunn Solar Telescope KW - altitude KW - data processing KW - alkali metals KW - sodium KW - distribution KW - temperature KW - measurement KW - exosphere KW - terrestrial planets KW - planets KW - absorption KW - metals KW - Mercury Planet KW - Interferometric Bidimensional Spectrometer KW - corrections KW - uncertainty KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1492586274?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Observation+of+neutral+sodium+above+Mercury+during+the+transit+of+November+8%2C+2006&rft.au=Potter%2C+A+E%3BKillen%2C+R+M%3BReardon%2C+Kevin+P%3BBida%2C+T+A&rft.aulast=Potter&rft.aufirst=A&rft.date=2013-10-01&rft.volume=226&rft.issue=1&rft.spage=172&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.05.029 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 41 N1 - PubXState - NY N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2014-01-30 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - absorption; alkali metals; altitude; corrections; data processing; distribution; Dunn Solar Telescope; exosphere; gaseous phase; Interferometric Bidimensional Spectrometer; measurement; Mercury Planet; metals; planets; sodium; telescope methods; temperature; terrestrial planets; uncertainty DO - http://dx.doi.org/10.1016/j.icarus.2013.05.029 ER - TY - JOUR T1 - Saturn's thermal emission at 2.2-cm wavelength as imaged by the Cassini RADAR radiometer AN - 1492586265; 2014-005966 JF - Icarus AU - Janssen, M A AU - Ingersoll, A P AU - Allison, M D AU - Gulkis, S AU - Laraia, A L AU - Baines, K H AU - Edgington, S G AU - Anderson, Y Z AU - Kelleher, K AU - Oyafuso, F A Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 522 EP - 535 PB - Elsevier, New York, NY VL - 226 IS - 1 SN - 0019-1035, 0019-1035 KW - clouds KW - ammonium KW - brightness temperature KW - mapping KW - calibration KW - RADAR instrument KW - giant planets KW - microwave methods KW - Saturn KW - planets KW - atmospheric circulation KW - Cassini-Huygens Mission KW - saturation KW - radiometers KW - thermal emission KW - spectra KW - outer planets KW - radiative transfer KW - hydrostatic pressure KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1492586265?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Saturn%27s+thermal+emission+at+2.2-cm+wavelength+as+imaged+by+the+Cassini+RADAR+radiometer&rft.au=Janssen%2C+M+A%3BIngersoll%2C+A+P%3BAllison%2C+M+D%3BGulkis%2C+S%3BLaraia%2C+A+L%3BBaines%2C+K+H%3BEdgington%2C+S+G%3BAnderson%2C+Y+Z%3BKelleher%2C+K%3BOyafuso%2C+F+A&rft.aulast=Janssen&rft.aufirst=M&rft.date=2013-10-01&rft.volume=226&rft.issue=1&rft.spage=522&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.06.008 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 49 N1 - PubXState - NY N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2014-01-30 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - ammonium; atmospheric circulation; brightness temperature; calibration; Cassini-Huygens Mission; clouds; giant planets; hydrostatic pressure; mapping; microwave methods; outer planets; planets; RADAR instrument; radiative transfer; radiometers; saturation; Saturn; spectra; thermal emission DO - http://dx.doi.org/10.1016/j.icarus.2013.06.008 ER - TY - JOUR T1 - Simulations of the Martian hydrologic cycle with a general circulation model; implications for the ancient Martian climate AN - 1492586262; 2014-005946 JF - Icarus AU - Urata, Richard A AU - Toon, Owen B Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 229 EP - 250 PB - Elsevier, New York, NY VL - 226 IS - 1 SN - 0019-1035, 0019-1035 KW - clouds KW - albedo KW - general circulation models KW - atmosphere KW - water vapor KW - Mars KW - simulation KW - paleoclimatology KW - temperature KW - polar caps KW - carbon dioxide KW - terrestrial planets KW - planets KW - hydrologic cycle KW - ice KW - greenhouse effect KW - climate KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1492586262?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Simulations+of+the+Martian+hydrologic+cycle+with+a+general+circulation+model%3B+implications+for+the+ancient+Martian+climate&rft.au=Urata%2C+Richard+A%3BToon%2C+Owen+B&rft.aulast=Urata&rft.aufirst=Richard&rft.date=2013-10-01&rft.volume=226&rft.issue=1&rft.spage=229&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.05.014 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 81 N1 - PubXState - NY N1 - Document feature - illus. incl. 4 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-01-30 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - albedo; atmosphere; carbon dioxide; climate; clouds; general circulation models; greenhouse effect; hydrologic cycle; ice; Mars; paleoclimatology; planets; polar caps; simulation; temperature; terrestrial planets; water vapor DO - http://dx.doi.org/10.1016/j.icarus.2013.05.014 ER - TY - JOUR T1 - Microbes in the upper atmosphere and unique opportunities for astrobiology research AN - 1492585895; 2014-007709 AB - Microbial taxa from every major biological lineage have been detected in Earth's upper atmosphere. The goal of this review is to communicate (1) relevant astrobiology questions that can be addressed with upper atmosphere microbiology studies and (2) available sampling methods for collecting microbes at extreme altitudes. Precipitation, mountain stations, airplanes, balloons, rockets, and satellites are all feasible routes for conducting aerobiology research. However, more efficient air samplers are needed, and contamination is also a pervasive problem in the field. Measuring microbial signatures without false positives in the upper atmosphere might contribute to sterilization and bioburden reduction methods for proposed astrobiology missions. Intriguingly, environmental conditions in the upper atmosphere resemble the surface conditions of Mars (extreme cold, hypobaria, desiccation, and irradiation). Whether terrestrial microbes are active in the upper atmosphere is an area of intense research interest. If, in fact, microbial metabolism, growth, or replication is achievable independent of Earth's surface, then the search for habitable zones on other worlds should be broadened to include atmospheres (e.g., the high-altitude clouds of Venus). Furthermore, viable cells in the heavily irradiated upper atmosphere of Earth could help identify microbial genes or enzymes that bestow radiation resistance. Compelling astrobiology questions on the origin of life (if the atmosphere synthesized organic aerosols), evolution (if airborne transport influenced microbial mutation rates and speciation), and panspermia (outbound or inbound) are also testable in Earth's upper atmosphere. JF - Astrobiology AU - Smith, David J Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 981 EP - 990 PB - Mary Ann Liebert, Larchmont, NY VL - 13 IS - 10 SN - 1531-1074, 1531-1074 KW - irradiation KW - Earth KW - atmosphere KW - astrobiology KW - Mars KW - ecosystems KW - exploration KW - terrestrial planets KW - planets KW - habitat KW - stratosphere KW - sampling KW - biosphere KW - panspermia KW - microorganisms KW - airborne methods KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1492585895?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Astrobiology&rft.atitle=Microbes+in+the+upper+atmosphere+and+unique+opportunities+for+astrobiology+research&rft.au=Smith%2C+David+J&rft.aulast=Smith&rft.aufirst=David&rft.date=2013-10-01&rft.volume=13&rft.issue=10&rft.spage=981&rft.isbn=&rft.btitle=&rft.title=Astrobiology&rft.issn=15311074&rft_id=info:doi/10.1089%2Fast.2013.1074 L2 - http://www.liebertpub.com/publication.aspx?pub_id=99 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 111 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2014-01-30 N1 - SubjectsTermNotLitGenreText - airborne methods; astrobiology; atmosphere; biosphere; Earth; ecosystems; exploration; habitat; irradiation; Mars; microorganisms; panspermia; planets; sampling; stratosphere; terrestrial planets DO - http://dx.doi.org/10.1089/ast.2013.1074 ER - TY - JOUR T1 - Anhydrous liquid line of descent of Yamato-980459 and evolution of Martian parental magmas AN - 1464887560; 2013-093582 AB - We report the results of nominally anhydrous equilibrium and fractional crystallization experiments on a synthetic Yamato-980459 (Y98) bulk composition at 0.5 GPa. These experiments allow us to test a suggested fractional crystallization model, calculated using MELTS by Symes et al. ([Symes S. J. K., 2008]), in which a Y98-like initial liquid yielded a magma closely resembling the bulk composition of QUE 94201. Although the two meteorites cannot be cogenetic owing to their age difference, they are thought to represent bona fide magmatic liquids rather than products of crystal accumulation, as are most Martian basaltic meteorites. Hence, understanding possible petrogenetic links between these types of liquids could be revealing about processes of melting and crystallization that formed the range of Martian basalts. We find that Y98 can, in fact, generate a residual liquid closely resembling QUE, but only after a very different crystallization process, and different degree of crystallization, than that modeled using MELTS. In addition, both the identity and sequence of crystallizing phases are very different between model and experiments. Our fractional crystallization experiments do not produce a QUE-like liquid, and the crystallizing phases are an even poorer match to the MELTS-calculated compositions than in the equilibrium runs. However, residual liquids from our experiments define a liquid line of descent that encompasses bulk compositions of parental melts calculated for several Martian basaltic meteorites, suggesting that the known Martian basaltic meteorites had their ultimate origin from the same or very similar source lithologies. These are, in turn, similar to source rocks modeled by previous studies as products of extensive crystallization of an initial Martian magma ocean. Abstract Copyright Published 2013. This article is a U.S. Government work and is in the public domain in the USA. JF - Meteoritics & Planetary Science AU - Rapp, Jennifer F AU - Draper, David S AU - Mercer, Cameron M Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 1780 EP - 1799 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 10 SN - 1086-9379, 1086-9379 KW - silicates KW - volcanic rocks KW - stony meteorites KW - Martian meteorites KW - igneous rocks KW - mantle KW - olivine group KW - Mars KW - melts KW - SNC Meteorites KW - meteorites KW - pyroxene group KW - cumulates KW - olivine KW - basalts KW - orthosilicates KW - synthetic materials KW - chain silicates KW - upper mantle KW - Yamato Meteorites KW - magma oceans KW - experimental studies KW - Y 980459 KW - QUE 94201 KW - achondrites KW - terrestrial planets KW - nesosilicates KW - planets KW - Antarctica KW - shergottite KW - magmas KW - Queen Alexandra Range Meteorites KW - parent materials KW - fractional crystallization KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1464887560?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Anhydrous+liquid+line+of+descent+of+Yamato-980459+and+evolution+of+Martian+parental+magmas&rft.au=Rapp%2C+Jennifer+F%3BDraper%2C+David+S%3BMercer%2C+Cameron+M&rft.aulast=Rapp&rft.aufirst=Jennifer&rft.date=2013-10-01&rft.volume=48&rft.issue=10&rft.spage=1780&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12197 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2013-01-01 N1 - Number of references - 72 N1 - PubXState - AR N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2013-12-05 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - achondrites; Antarctica; basalts; chain silicates; cumulates; experimental studies; fractional crystallization; igneous rocks; magma oceans; magmas; mantle; Mars; Martian meteorites; melts; meteorites; nesosilicates; olivine; olivine group; orthosilicates; parent materials; planets; pyroxene group; QUE 94201; Queen Alexandra Range Meteorites; shergottite; silicates; SNC Meteorites; stony meteorites; synthetic materials; terrestrial planets; upper mantle; volcanic rocks; Y 980459; Yamato Meteorites DO - http://dx.doi.org/10.1111/maps.12197 ER - TY - JOUR T1 - The formation of Mg,Fe-silicates by reactions between amorphous magnesiosilica smoke particles and metallic iron nanograins with implications for comet silicate origins AN - 1464887325; 2013-093584 AB - This thermal annealing experiment at 1000 K for up to 167 h used a physical mixture of vapor phase-condensed magnesiosilica grains and metallic iron nanograins to test the hypothesis that a mixture of magnesiosilica grains and an Fe-source would lead to the formation of ferromagnesiosilica grains. This exploratory study found that coagulation and thermal annealing of amorphous magnesiosilica and metallic grains yielded ferromagnesiosilica grains with the Fe/(Fe + Mg) ratios in interplanetary dust particles. Furthermore, decomposition of brucite present in the condensed magnesiosilica grains was the source for water and the cause of different iron oxidation states, and the formation of amorphous Fe (super 3+) -ferrosilica, amorphous Fe (super 3+) -Mg, Fe-silicates, and magnesioferrite during thermal annealing. Fayalite and ferrosilite that formed from silica/FeO melts reacted with forsterite and enstatite to form Mg, Fe-silicates. The presence of iron in different oxidation states in extraterrestrial materials almost certainly requires active asteroid-like parent bodies. If so, the possible presence of trivalent Fe compounds in comet P/Halley suggests that Halley-type comets are a mixture of preserved presolar and processed solar nebula dust. The results from this thermal annealing experiment further suggest that the Fe-silicates detected in the impact-induced ejecta from comet 9P/Temple 1 might be of secondary origin and related to the impact experiment or to processing in a regolith. Abstract Copyright The Meteoritical Society, 2013. JF - Meteoritics & Planetary Science AU - Rietmeijer, Frans J M AU - Nuth, Joseph A AU - Pun, Aurora Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 1823 EP - 1840 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 10 SN - 1086-9379, 1086-9379 KW - silicates KW - magnesium KW - asteroids KW - ferromagnesiosilica KW - olivine group KW - interplanetary dust KW - iron KW - temperature KW - ferric iron KW - brucite KW - pyroxene group KW - fayalite KW - orthosilicates KW - oxides KW - valency KW - condensates KW - enstatite KW - chain silicates KW - water KW - alkaline earth metals KW - experimental studies KW - condensation KW - amorphous materials KW - parent bodies KW - oxidation KW - forsterite KW - nesosilicates KW - cosmic dust KW - comets KW - metals KW - orthopyroxene KW - nanoparticles KW - high temperature KW - ferrosilite KW - annealing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1464887325?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+formation+of+Mg%2CFe-silicates+by+reactions+between+amorphous+magnesiosilica+smoke+particles+and+metallic+iron+nanograins+with+implications+for+comet+silicate+origins&rft.au=Rietmeijer%2C+Frans+J+M%3BNuth%2C+Joseph+A%3BPun%2C+Aurora&rft.aulast=Rietmeijer&rft.aufirst=Frans+J&rft.date=2013-10-01&rft.volume=48&rft.issue=10&rft.spage=1823&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12194 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2013-01-01 N1 - Number of references - 66 N1 - PubXState - AR N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2013-12-05 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - alkaline earth metals; amorphous materials; annealing; asteroids; brucite; chain silicates; comets; condensates; condensation; cosmic dust; enstatite; experimental studies; fayalite; ferric iron; ferromagnesiosilica; ferrosilite; forsterite; high temperature; interplanetary dust; iron; magnesium; metals; nanoparticles; nesosilicates; olivine group; orthopyroxene; orthosilicates; oxidation; oxides; parent bodies; pyroxene group; silicates; temperature; valency; water DO - http://dx.doi.org/10.1111/maps.12194 ER - TY - JOUR T1 - Comparison of Precipitation Derived from the ECMWF Operational Forecast Model and Satellite Precipitation Datasets AN - 1448225552; 18713235 AB - Precipitation is an important component of the climate system, and the accurate representation of the diurnal rainfall cycle is a key test of model performance. Although the modeling of precipitation in the cooler midlatitudes has improved, in the tropics substantial errors still occur. Precipitation from the operational ECMWF forecast model is compared with satellite-derived products from the Tropical Rainfall Measuring Mission (TRMM) Multisatellite Precipitation Analysis (TMPA) and TRMM Precipitation Radar (PR) to assess the mean annual and seasonal diurnal rainfall cycles. The analysis encompasses the global tropics and subtropics (40 degree N-40 degree S) over a 7-yr period from 2004 to 2011. The primary aim of the paper is to evaluate the ability of an operational numerical model and satellite products to retrieve subdaily rainfall. It was found that during the first half of the analysis period the ECMWF model overestimated precipitation by up to 15% in the tropics, although after the implementation of a new convective parameterization in November 2007 this bias fell to about 4%. The ECMWF model poorly represented the diurnal cycle, simulating rainfall too early compared to the TMPA and TRMM PR products; the model simulation of precipitation was particularly poor over Indonesia. In addition, the model did not appear to simulate mountain-slope breezes well or adequately capture many of the characteristics of mesoscale convective systems. The work highlights areas for further study to improve the representation of subgrid-scale processes in parameterization schemes and improvements in model resolution. In particular, the proper representation of subdaily precipitation in models is critical for hydrological modeling and flow forecasting. JF - Journal of Hydrometeorology AU - Kidd, Chris AU - Dawkins, Erin AU - Huffman, George AD - Earth System Science Interdisciplinary Center, University of Maryland, College Park, College Park, and NASA Goddard Space Flight Center, Greenbelt, Maryland Y1 - 2013/10// PY - 2013 DA - Oct 2013 SP - 1463 EP - 1482 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 14 IS - 5 SN - 1525-755X, 1525-755X KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Prediction KW - Rainfall cycles KW - Rainfall KW - Indonesia KW - Remote sensing KW - Model Testing KW - Hydrologic Models KW - Numerical models KW - European Centre for Medium-Range Weather Forecasts KW - Forecasting KW - Mesoscale convective systems KW - Diurnal precipitation variations KW - Modelling KW - Hydrologic analysis KW - Climate models KW - Mathematical models KW - Climates KW - Precipitation KW - Hydrometeorology KW - Satellite sensing KW - Performance Evaluation KW - Hydrometeorological research KW - Satellite data KW - Numerical simulations KW - Radar KW - Convective activity KW - Tropical Rainfall Measuring Mission (TRMM) KW - Q2 09243:Structure, mechanics and thermodynamics KW - SW 5010:Network design KW - AQ 00006:Sewage KW - M2 551.509.1/.5:Forecasting (551.509.1/.5) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1448225552?accountid=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=Comparison+of+Precipitation+Derived+from+the+ECMWF+Operational+Forecast+Model+and+Satellite+Precipitation+Datasets&rft.au=Kidd%2C+Chris%3BDawkins%2C+Erin%3BHuffman%2C+George&rft.aulast=Kidd&rft.aufirst=Chris&rft.date=2013-10-01&rft.volume=14&rft.issue=5&rft.spage=1463&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrometeorology&rft.issn=1525755X&rft_id=info:doi/10.1175%2FJHM-D-12-0182.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-10-01 N1 - Number of references - 57 N1 - Last updated - 2014-05-02 N1 - SubjectsTermNotLitGenreText - Prediction; Satellite sensing; Mathematical models; Remote sensing; Modelling; Climate models; Hydrologic analysis; Rainfall cycles; Precipitation; Satellite data; Hydrometeorological research; Numerical models; Numerical simulations; Convective activity; Radar; European Centre for Medium-Range Weather Forecasts; Tropical Rainfall Measuring Mission (TRMM); Mesoscale convective systems; Diurnal precipitation variations; Hydrometeorology; Performance Evaluation; Hydrologic Models; Rainfall; Climates; Forecasting; Model Testing; Indonesia DO - http://dx.doi.org/10.1175/JHM-D-12-0182.1 ER - TY - JOUR T1 - Impact of Land Model Calibration on Coupled Land-Atmosphere Prediction AN - 1448225457; 18713223 AB - Land-atmosphere (LA) interactions play a critical role in determining the diurnal evolution of both planetary boundary layer (PBL) and land surface heat and moisture budgets, as well as controlling feedbacks with clouds and precipitation that lead to the persistence of dry and wet regimes. In this study, the authors examine the impact of improved specification of land surface states, anomalies, and fluxes on coupled Weather Research and Forecasting Model (WRF) forecasts during the summers of extreme dry (2006) and wet (2007) land surface conditions in the U.S. southern Great Plains. The improved land initialization and surface flux parameterizations are obtained through calibration of the Noah land surface model using the new optimization and uncertainty estimation subsystems in NASA's Land Information System (LIS-OPT/LIS-UE). The impact of the calibration on the 1) spinup of the land surface used as initial conditions and 2) the simulated heat and moisture states and fluxes of the coupled WRF simulations is then assessed. In addition, the sensitivity of this approach to the period of calibration (dry, wet, or average) is investigated. Results show that the offline calibration is successful in providing improved initial conditions and land surface physics for the coupled simulations and in turn leads to systematic improvements in landPBL fluxes and near-surface temperature and humidity forecasts. Impacts are larger during dry regimes, but calibration during either primarily wet or dry periods leads to improvements in coupled simulations due to the reduction in land surface model bias. Overall, these results provide guidance on the questions of what, how, and when to calibrate land surface models for coupled model prediction. JF - Journal of Hydrometeorology AU - Santanello, Joseph A, Jr AU - Kumar, Sujay V AU - Peters-Lidard, Christa D AU - Harrison, Ken AU - Zhou, Shujia AD - Hydrological Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland Y1 - 2013/10// PY - 2013 DA - Oct 2013 SP - 1373 EP - 1400 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 14 IS - 5 SN - 1525-755X, 1525-755X KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Prediction KW - Moisture KW - Hydrological Regime KW - Calibrations KW - Surface fluxes KW - Hydrometeorological forecasting KW - Atmospheric boundary layer KW - Initial conditions KW - Weather forecasting KW - Diurnal precipitation variations KW - Moisture budget KW - Modelling KW - Dry periods KW - Heat flux KW - Temperature KW - Simulation KW - Humidity KW - Precipitation KW - Model Studies KW - Clouds KW - USA KW - Hydrometeorological research KW - Numerical simulations KW - Heat KW - Boundary layers KW - Land-atmosphere interaction KW - Information systems KW - SW 5010:Network design KW - Q2 09381:Cables KW - AQ 00005:Underground Services and Water Use KW - M2 551.509.1/.5:Forecasting (551.509.1/.5) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1448225457?accountid=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+Land+Model+Calibration+on+Coupled+Land-Atmosphere+Prediction&rft.au=Santanello%2C+Joseph+A%2C+Jr%3BKumar%2C+Sujay+V%3BPeters-Lidard%2C+Christa+D%3BHarrison%2C+Ken%3BZhou%2C+Shujia&rft.aulast=Santanello&rft.aufirst=Joseph&rft.date=2013-10-01&rft.volume=14&rft.issue=5&rft.spage=1373&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrometeorology&rft.issn=1525755X&rft_id=info:doi/10.1175%2FJHM-D-12-0127.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-10-01 N1 - Number of references - 69 N1 - Last updated - 2015-02-12 N1 - SubjectsTermNotLitGenreText - Prediction; Boundary layers; Humidity; Simulation; Weather forecasting; Modelling; Information systems; Dry periods; Heat flux; Precipitation; Clouds; Hydrometeorological research; Numerical simulations; Surface fluxes; Hydrometeorological forecasting; Atmospheric boundary layer; Initial conditions; Land-atmosphere interaction; Diurnal precipitation variations; Moisture budget; Hydrological Regime; Moisture; Calibrations; Heat; Temperature; Model Studies; USA DO - http://dx.doi.org/10.1175/JHM-D-12-0127.1 ER - TY - JOUR T1 - Petrology and geochemistry of lunar granite 12032,366-19 and implications for lunar granite petrogenesis AN - 1447102248; 2013-084916 AB - Apollo 12 sample 12032,366-19 is a 21.3 mg granite fragment that is distinct from any other lunar granite or felsite. It is composed of barian K-feldspar, quartz, sodic plagioclase, hedenbergite, fayalite, and ilmenite, with trace amounts of zirconolite, baddeleyite, apatite, and merrillite. The texture of 12032,366-19 is largely a micrographic intergrowth predominantly of K-feldspar and quartz and, to a lesser extent, plagioclase and quartz. Hedenbergite, fayalite, and ilmenite are present in minor but significant quantities--6.0, 3.1, and 1.7 wt%, respectively--and are scattered throughout the feldspar-quartz intergrowths. Trace amounts of Zr-bearing phases are found including zirconolite (0.6 wt%) and baddeleyite (0.04 wt%). Incompatible trace-element concentrations are high in 12032,366-19, particularly the high-field-strength elements, e.g., Zr, Sm, and Th (1500, 25, and 61 mu g/g, respectively). The chondrite-normalized, rare-earth-element concentrations form a "V-pattern" that is characteristic of other lunar granitic material. By modeling 12032,366-19 as a derivative from a KREEP-like parent melt, the composition and mineral assemblage can be obtained by extended fractional crystallization combined with separation of the low-density minerals plus trapped melt components prior to final solidification. However, this model cannot quantitatively account for the relatively sodic composition of the plagioclase (An (sub 34-50) ) and requires that the starting melt has Na (sub 2) O of 1.2-1.4 wt%, which is higher than most KREEP compositions. Formation of this assemblage by silicate-liquid immiscibility is neither required nor indicated by petrogenetic modeling. JF - American Mineralogist AU - Seddio, Stephen M AU - Jolliff, Bradley L AU - Korotev, Randy L AU - Zeigler, Ryan A Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 1697 EP - 1713 PB - Mineralogical Society of America, Washington, DC VL - 98 IS - 10 SN - 0003-004X, 0003-004X KW - silicates KW - K-feldspar KW - granites KW - zirconium KW - olivine group KW - Apollo Program KW - plutonic rocks KW - mineral composition KW - clinopyroxene KW - alkali feldspar KW - orthosilicates KW - framework silicates KW - mineral assemblages KW - chain silicates KW - apatite KW - plagioclase KW - felsite KW - felsic composition KW - merrillite KW - KREEP KW - immiscibility KW - quartz KW - petrography KW - feldspar group KW - SEM data KW - ilmenite KW - zirconolite KW - silica minerals KW - igneous rocks KW - pyroxene group KW - fayalite KW - oxides KW - spectra KW - samarium KW - rare earths KW - trace elements KW - chemical composition KW - baddeleyite KW - liquid phase KW - Moon KW - phosphates KW - nesosilicates KW - genesis KW - lunar samples KW - Raman spectra KW - hedenbergite KW - metals KW - thorium KW - Apollo 12 KW - actinides KW - 04:Extraterrestrial geology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1447102248?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Petrology+and+geochemistry+of+lunar+granite+12032%2C366-19+and+implications+for+lunar+granite+petrogenesis&rft.au=Seddio%2C+Stephen+M%3BJolliff%2C+Bradley+L%3BKorotev%2C+Randy+L%3BZeigler%2C+Ryan+A&rft.aulast=Seddio&rft.aufirst=Stephen&rft.date=2013-10-01&rft.volume=98&rft.issue=10&rft.spage=1697&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam.2013.4330 L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2013-01-01 N1 - Number of references - 80 N1 - PubXState - DC N1 - Document feature - illus. incl. 7 tables N1 - Last updated - 2013-10-31 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - actinides; alkali feldspar; apatite; Apollo 12; Apollo Program; baddeleyite; chain silicates; chemical composition; clinopyroxene; fayalite; feldspar group; felsic composition; felsite; framework silicates; genesis; granites; hedenbergite; igneous rocks; ilmenite; immiscibility; K-feldspar; KREEP; liquid phase; lunar samples; merrillite; metals; mineral assemblages; mineral composition; Moon; nesosilicates; olivine group; orthosilicates; oxides; petrography; phosphates; plagioclase; plutonic rocks; pyroxene group; quartz; Raman spectra; rare earths; samarium; SEM data; silica minerals; silicates; spectra; thorium; trace elements; zirconium; zirconolite DO - http://dx.doi.org/10.2138/am.2013.4330 ER - TY - JOUR T1 - Global Weather States and Their Properties from Passive and Active Satellite Cloud Retrievals AN - 1443371340; 18655967 AB - In this study, the authors apply a clustering algorithm to International Satellite Cloud Climatology Project (ISCCP) cloud optical thickness-cloud top pressure histograms in order to derive weather states (WSs) for the global domain. The cloud property distribution within each WS is examined and the geographical variability of each WS is mapped. Once the global WSs are derived, a combination of CloudSat and Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) vertical cloud structure retrievals is used to derive the vertical distribution of the cloud field within each WS. Finally, the dynamic environment and the radiative signature of the WSs are derived and their variability is examined. The cluster analysis produces a comprehensive description of global atmospheric conditions through the derivation of 11 WSs, each representing a distinct cloud structure characterized by the horizontal distribution of cloud optical depth and cloud top pressure. Matching those distinct WSs with cloud vertical profiles derived from CloudSat and CALIPSO retrievals shows that the ISCCP WSs exhibit unique distributions of vertical layering that correspond well to the horizontal structure of cloud properties. Matching the derived WSs with vertical velocity measurements shows a normal progression in dynamic regime when moving from the most convective to the least convective WS. Time trend analysis of the WSs shows a sharp increase of the fair-weather WS in the 1990s and a flattening of that increase in the 2000s. The fact that the fair-weather WS is the one with the lowest cloud radiative cooling capability implies that this behavior has contributed excess radiative warming to the global radiative budget during the 1990s. JF - Journal of Climate AU - Tselioudis, George AU - Rossow, William AU - Zhang, Yuanchong AU - Konsta, Dimitra AD - NASA GISS, and Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York, and Research Centre for Atmospheric Physics and Climatology, Academy of Athens, Athens, Greece Y1 - 2013/10// PY - 2013 DA - October 2013 SP - 7734 EP - 7746 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 26 IS - 19 SN - 0894-8755, 0894-8755 KW - Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Variability KW - Horizontal distribution KW - Remote sensing KW - CLOUDSAT KW - Cloud properties KW - Climatology KW - Trend analysis KW - Weather KW - Vertical distribution KW - Pressure Distribution KW - Mathematical models KW - Climates KW - Vertical Distribution KW - Velocity KW - Vertical profiles KW - Vertical velocity measurements KW - Clouds KW - Satellite sensing KW - Cloud structure KW - Cluster spacecraft KW - Convective activity KW - Global warming KW - LIDAR KW - Q2 09243:Structure, mechanics and thermodynamics KW - SW 5080:Evaluation, processing and publication KW - M2 551.58:Climatology (551.58) KW - AQ 00005:Underground Services and Water Use UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1443371340?accountid=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=Global+Weather+States+and+Their+Properties+from+Passive+and+Active+Satellite+Cloud+Retrievals&rft.au=Tselioudis%2C+George%3BRossow%2C+William%3BZhang%2C+Yuanchong%3BKonsta%2C+Dimitra&rft.aulast=Tselioudis&rft.aufirst=George&rft.date=2013-10-01&rft.volume=26&rft.issue=19&rft.spage=7734&rft.isbn=&rft.btitle=&rft.title=Journal+of+Climate&rft.issn=08948755&rft_id=info:doi/10.1175%2FJCLI-D-13-00024.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-10-01 N1 - Number of references - 31 N1 - Last updated - 2016-04-29 N1 - SubjectsTermNotLitGenreText - Clouds; Vertical distribution; Satellite sensing; Horizontal distribution; Mathematical models; Remote sensing; Climatology; LIDAR; Vertical profiles; Vertical velocity measurements; CLOUDSAT; Cloud structure; Cluster spacecraft; Convective activity; Global warming; Cloud properties; Trend analysis; Weather; Variability; Pressure Distribution; Climates; Vertical Distribution; Velocity DO - http://dx.doi.org/10.1175/JCLI-D-13-00024.1 ER - TY - JOUR T1 - In silico maturation of binding-specificity of DNA aptamers against Proteus mirabilis AN - 1428958782 AB - Proteus mirabilis is a prominent cause of catheter-associated urinary tract infections (CAUTIs) among patients undergoing long-term bladder catheterization. There are currently no effective means of preventing P. mirabilis infections, and strategies for prophylaxis and rapid early diagnosis are urgently required. Aptamers offer significant potential for development of countermeasures against P. mirabilis CAUTI and are an ideal class of molecules for the development of diagnostics and therapeutics. Here we demonstrate the application of Cell-SELEX to identify DNA aptamers that show high affinity for P. mirabilis. While the aptamers identified displayed high affinity for P. mirabilis cells in dot blotting assays, they also bound to other uropathogenic bacteria. To improve aptamer specificity for P. mirabilis, an in silico maturation (ISM) approach was employed. Two cycles of ISM allowed the identification of an aptamer showing 36% higher specificity, evaluated as a ratio of binding signal for P. mirabilis to that for Escherichia coli (also a cause of CAUTI and the most common urinary tract pathogen). Aptamers that specifically recognize P. mirabilis would have diagnostic and therapeutic values and constitute useful tools for studying membrane-associated proteins in this organism. [PUBLICATION ABSTRACT] JF - Biotechnology and Bioengineering AU - Savory, Nasa AU - Lednor, Danielle AU - Tsukakoshi, Kaori AU - Abe, Koichi AU - Yoshida, Wataru AU - Ferri, Stefano AU - Jones, Brian V AU - Ikebukuro, Kazunori Y1 - 2013/10// PY - 2013 DA - Oct 2013 SP - 2573 CY - New York PB - Wiley Subscription Services, Inc. VL - 110 IS - 10 SN - 00063592 KW - Biology--Biochemistry KW - Binding sites KW - Deoxyribonucleic acid--DNA KW - Gram-negative bacteria KW - Urinary tract diseases KW - Signal transduction KW - Disease prevention KW - Bacterial proteins UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1428958782?accountid=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=article&rft.jtitle=Biotechnology+and+Bioengineering&rft.atitle=In+silico+maturation+of+binding-specificity+of+DNA+aptamers+against+Proteus+mirabilis&rft.au=Savory%2C+Nasa%3BLednor%2C+Danielle%3BTsukakoshi%2C+Kaori%3BAbe%2C+Koichi%3BYoshida%2C+Wataru%3BFerri%2C+Stefano%3BJones%2C+Brian+V%3BIkebukuro%2C+Kazunori&rft.aulast=Savory&rft.aufirst=Nasa&rft.date=2013-10-01&rft.volume=110&rft.issue=10&rft.spage=2573&rft.isbn=&rft.btitle=&rft.title=Biotechnology+and+Bioengineering&rft.issn=00063592&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright John Wiley and Sons, Limited Oct 2013 N1 - Last updated - 2014-11-22 N1 - CODEN - BIBIAU ER - TY - NEWS T1 - NASA Celebrates National Aerospace Week AN - 1437504631 JF - UPI Space Daily AU - NASA Administrator Charles Bolden Y1 - 2013/09/29/ PY - 2013 DA - 2013 Sep 29 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1437504631?accountid=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+Celebrates+National+Aerospace+Week&rft.au=NASA+Administrator+Charles+Bolden&rft.aulast=NASA+Administrator+Charles+Bolden&rft.aufirst=&rft.date=2013-09-29&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 - 2013-09-29 ER - TY - NEWS T1 - ISS "Firestation" to Explore the Tops of Thunderstorms AN - 1437504595 JF - UPI Space Daily AU - Maria-Jose Vinas for NASA Earth Science News Y1 - 2013/09/29/ PY - 2013 DA - 2013 Sep 29 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1437504595?accountid=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=ISS+%22Firestation%22+to+Explore+the+Tops+of+Thunderstorms&rft.au=Maria-Jose+Vinas+for+NASA+Earth+Science+News&rft.aulast=Maria-Jose+Vinas+for+NASA+Earth+Science+News&rft.aufirst=&rft.date=2013-09-29&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 - 2013-09-29 ER - TY - NEWS T1 - Watch Out for the Harvest Moon AN - 1437504577 JF - UPI Space Daily AU - Dr. Tony Phillips for NASA Science News Y1 - 2013/09/29/ PY - 2013 DA - 2013 Sep 29 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1437504577?accountid=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=Watch+Out+for+the+Harvest+Moon&rft.au=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2013-09-29&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 - 2013-09-29 ER - TY - NEWS T1 - Warm Ocean Rapidly Melting Antarctic Ice Shelf from Below AN - 1437504574 JF - UPI Space Daily AU - Maria-Jose Vinas for NASA Earth Science News Y1 - 2013/09/29/ PY - 2013 DA - 2013 Sep 29 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1437504574?accountid=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=Warm+Ocean+Rapidly+Melting+Antarctic+Ice+Shelf+from+Below&rft.au=Maria-Jose+Vinas+for+NASA+Earth+Science+News&rft.aulast=Maria-Jose+Vinas+for+NASA+Earth+Science+News&rft.aufirst=&rft.date=2013-09-29&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 - 2013-09-29 ER - TY - NEWS T1 - Sixteen Tons of Moondust AN - 1437142614 JF - UPI Space Daily AU - Dauna Coulter for "http://science.nasa.gov/" NASA Science News Y1 - 2013/09/27/ PY - 2013 DA - 2013 Sep 27 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1437142614?accountid=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=Sixteen+Tons+of+Moondust&rft.au=Dauna+Coulter+for+%22http%3A%2F%2Fscience.nasa.gov%2F%22+NASA+Science+News&rft.aulast=Dauna+Coulter+for+%22http%3A%2F%2Fscience.nasa.gov%2F%22+NASA+Science+News&rft.aufirst=&rft.date=2013-09-27&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 - 2013-09-27 ER - TY - NEWS T1 - NEXT Provides Lasting Propulsion and High Speeds for Deep Space Missions AN - 1437105671 JF - UPI Space Daily AU - Nancy Smith Kilkenny Glenn Research Center Y1 - 2013/09/27/ PY - 2013 DA - 2013 Sep 27 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1437105671?accountid=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=NEXT+Provides+Lasting+Propulsion+and+High+Speeds+for+Deep+Space+Missions&rft.au=Nancy+Smith+Kilkenny+Glenn+Research+Center&rft.aulast=Nancy+Smith+Kilkenny+Glenn+Research+Center&rft.aufirst=&rft.date=2013-09-27&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 - 2013-09-27 ER - TY - JOUR T1 - In situ observations and sampling of volcanic emissions with NASA and UCR unmanned aircraft, including a case study at Turrialba Volcano, Costa Rica AN - 1442373238; 2013-082092 AB - Scientific knowledge of transient and difficult-to-access airborne volcanic emissions comes primarily from remote sensing observations, and a few in situ data from sporadic heroic or inadvertent airborne encounters. In the past, patchy knowledge of the composition and behaviour of such plumes from explosive volcanic eruptions, and associated drifting ash and gas clouds, have centrally contributed to unwanted and dangerous aircraft encounters that have put crews at risk and, in some cases, greatly damaged aircraft. Thus, improved knowledge of boundary conditions and plume composition, as inputs to both mass retrieval and predictive models for cloud trajectories, would be of benefit.In this paper, we describe how small robotic unmanned aerial vehicles (sUAVs) can address a variety of measurements that are typically beyond the reach of, and sometimes too dangerous for, manned aircraft. The direct measurements and sampling that can be achieved by sUAVs address serious gaps in knowledge of volcanic processes, and provide important validation data for estimations of volcanogenic ash and gas concentrations gleaned using remote sensing techniques. These data, in turn, constrain key proximal and distal boundary conditions for aerosol and gas transport models on which are based a number of decisions and evaluations by hazard responders and regulatory agencies.We briefly describe a case study from our ongoing field study at Turrialba Volcano in Costa Rica, where we are conducting an international campaign of systematic airborne in situ measurements of volcanogenic SO (sub 2) and other gases, as well as aerosols, with sUAVs and aerostats (e.g. tethered balloons and kites), in conjunction with data acquisitions by the Advanced Spaceborne Thermal Emission and Reflection (ASTER) radiometer onboard the NASA Terra Earth orbital platform. To our knowledge, this is the first such systematic in situ UAV- and aerostat-based observation programme for SO (sub 2) and particulates in a volcanic plume for correlation with orbital data. We preliminarily report good agreement between our UAV/aerostat and ASTER SO (sub 2) retrievals within a 5 km radius of the volcano summit, at altitudes of up to 12 500 ft (c. 3850 m) above sea level (asl) for concentrations within the range of 5-20 ppmv (ppm by volume). Additional work continues. JF - Special Publication - Geological Society of London AU - Pieri, David AU - Diaz, Jorge Andres AU - Bland, Geoffrey AU - Fladeland, Matthew AU - Madrigal, Yetty AU - Corrales, Ernesto AU - Alegria, Oscar AU - Alan, Alfredo AU - Realmuto, Vincent AU - Miles, Ted AU - Abtahi, Ali Y1 - 2013/09/25/ PY - 2013 DA - 2013 Sep 25 SP - 321 EP - 352, 33 PB - Geological Society of London, London VL - 380 IS - 1 SN - 0305-8719, 0305-8719 KW - plumes KW - technology KW - geologic hazards KW - Costa Rica KW - carbon dioxide KW - unmanned aerial vehicles KW - Earth Observing System KW - sampling KW - volcanism KW - thermal emission KW - ASTER instrument KW - Turrialba KW - in situ KW - pollution KW - emissivity KW - gases KW - case studies KW - ash KW - natural hazards KW - volcanoes KW - aerosols KW - Central America KW - instruments KW - remote sensing KW - airborne methods KW - 20:Applied geophysics KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442373238?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=In+situ+observations+and+sampling+of+volcanic+emissions+with+NASA+and+UCR+unmanned+aircraft%2C+including+a+case+study+at+Turrialba+Volcano%2C+Costa+Rica&rft.au=Pieri%2C+David%3BDiaz%2C+Jorge+Andres%3BBland%2C+Geoffrey%3BFladeland%2C+Matthew%3BMadrigal%2C+Yetty%3BCorrales%2C+Ernesto%3BAlegria%2C+Oscar%3BAlan%2C+Alfredo%3BRealmuto%2C+Vincent%3BMiles%2C+Ted%3BAbtahi%2C+Ali&rft.aulast=Pieri&rft.aufirst=David&rft.date=2013-09-25&rft.volume=380&rft.issue=1&rft.spage=321&rft.isbn=&rft.btitle=&rft.title=Special+Publication+-+Geological+Society+of+London&rft.issn=03058719&rft_id=info:doi/10.1144%2FSP380.13 L2 - http://sp.lyellcollection.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from The Geological Society, London, London, United Kingdom N1 - Date revised - 2013-01-01 N1 - Number of references - 92 N1 - Document feature - illus. incl. 4 tables N1 - SuppNotes - Online First N1 - Last updated - 2014-01-09 N1 - CODEN - GSLSBW N1 - SubjectsTermNotLitGenreText - aerosols; airborne methods; ash; ASTER instrument; carbon dioxide; case studies; Central America; Costa Rica; Earth Observing System; emissivity; gases; geologic hazards; in situ; instruments; natural hazards; plumes; pollution; remote sensing; sampling; technology; thermal emission; Turrialba; unmanned aerial vehicles; volcanism; volcanoes DO - http://dx.doi.org/10.1144/SP380.13 ER - TY - JOUR T1 - Bulk composition of GJ 1214b and other sub-Neptune exoplanets AN - 1739084481; 2015-116270 AB - GJ 1214b stands out among the detected low-mass exoplanets, because it is, so far, the only one amenable to transmission spectroscopy. Up to date there is no consensus about the composition of its envelope although most studies suggest a high molecular weight atmosphere. In particular, it is unclear if hydrogen and helium are present or if the atmosphere is water dominated. Here, we present results on the composition of the envelope obtained by using an internal structure and evolutionary model to fit the mass and radius data. By examining all possible mixtures of water and H/He, with the corresponding opacities, we find that the bulk amount of H/He of GJ 1214b is at most 7% by mass. In general, we find the radius of warm sub-Neptunes to be most sensitive to the amount of H/He. We note that all (Kepler-11b,c,d,f, Kepler-18b, Kepler-20b, 55Cnc-e, Kepler-36c, and Kepler-68b) but two (Kepler-11e and Kepler-30b) of the discovered low-mass planets so far have less than 10% H/He. In fact, Kepler-11e and Kepler-30b have 10%-18% and 5%-15% bulk H/He. Conversely, little can be determined about the H (sub 2) O or rocky content of sub-Neptune planets. We find that although a 100% water composition fits the data for GJ 1214b, based on formation constraints the presence of heavier refractory material on this planet is expected, and hence, so is a component lighter than water required. The same is true for Kepler-11f. A robust determination by transmission spectroscopy of the composition of the upper atmosphere of GJ 1214b will help determine the extent of compositional segregation between the atmosphere and the envelope. Copyright (Copyright) 2013. The American Astronomical Society. All rights reserved. JF - The Astrophysical Journal AU - Valencia, Diana AU - Guillot, Tristan AU - Parmentier, Vivien AU - Freedman, Richard S Y1 - 2013/09/20/ PY - 2013 DA - 2013 Sep 20 EP - Paper no. 10 PB - IOP Publishing for American Astronomical Society, Bristol VL - 775 IS - 1 SN - 0004-637X, 0004-637X KW - water KW - sub-Neptune planets KW - extrasolar planets KW - density KW - refractory materials KW - atmosphere KW - temperature KW - size KW - models KW - mass KW - planets KW - noble gases KW - hydrogen KW - planetary interiors KW - opacity KW - composition KW - water content KW - helium KW - GJ 1214b Planet KW - equations of state KW - metallicity KW - P-T conditions KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1739084481?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+Astrophysical+Journal&rft.atitle=Bulk+composition+of+GJ+1214b+and+other+sub-Neptune+exoplanets&rft.au=Valencia%2C+Diana%3BGuillot%2C+Tristan%3BParmentier%2C+Vivien%3BFreedman%2C+Richard+S&rft.aulast=Valencia&rft.aufirst=Diana&rft.date=2013-09-20&rft.volume=775&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%2F775%2F1%2F10 L2 - http://iopscience.iop.org/0004-637X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by IOP Publishing Ltd., London, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 36 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2015-12-04 N1 - SubjectsTermNotLitGenreText - atmosphere; composition; density; equations of state; extrasolar planets; GJ 1214b Planet; helium; hydrogen; mass; metallicity; models; noble gases; opacity; P-T conditions; planetary interiors; planets; refractory materials; size; sub-Neptune planets; temperature; water; water content DO - http://dx.doi.org/10.1088/0004-637X/775/1/10 ER - TY - JOUR T1 - VECTOR TOMOGRAPHY FOR THE CORONAL MAGNETIC FIELD. II. HANLE EFFECT MEASUREMENTS AN - 1705083245; PQ0001811589 AB - In this paper, we investigate the feasibility of saturated coronal Hanle effect vector tomography or the application of vector tomographic inversion techniques to reconstruct the three-dimensional magnetic field configuration of the solar corona using linear polarization measurements of coronal emission lines. We applied Hanle effect vector tomographic inversion to artificial data produced from analytical coronal magnetic field models with equatorial and meridional currents and global coronal magnetic field models constructed by extrapolation of real photospheric magnetic field measurements. We tested tomographic inversion with only Stokes Q, U, electron density, and temperature inputs to simulate observations over large limb distances where the Stokes I parameters are difficult to obtain with ground-based coronagraphs. We synthesized the coronal linear polarization maps by inputting realistic noise appropriate for ground-based observations over a period of two weeks into the inversion algorithm. We found that our Hanle effect vector tomographic inversion can partially recover the coronal field with a poloidal field configuration, but that it is insensitive to a corona with a toroidal field. This result demonstrates that Hanle effect vector tomography is an effective tool for studying the solar corona and that it is complementary to Zeeman effect vector tomography for the reconstruction of the coronal magnetic field. JF - Astrophysical Journal AU - Kramar, M AU - Inhester, B AU - Lin, H AU - Davila, J AD - Physics Department, The Catholic University of America, 620 Michigan Avenue NE, Washington, DC 20064, USA; NASA-GSFC, Code 671, Greenbelt, MD 20771, USA, maxim.i.kramar@nasa.gov Y1 - 2013/09/20/ PY - 2013 DA - 2013 Sep 20 SP - 1 EP - 12 PB - IOP Publishing, The Public Ledger Building, Suite 929 Philadelphia PA 19106 United States VL - 775 IS - 1 SN - 0004-637X, 0004-637X KW - Pollution Abstracts; Meteorological & Geoastrophysical Abstracts KW - magnetic fields KW - polarization KW - Sun: corona KW - Sun: infrared KW - Feasibility studies KW - Corona KW - Solar magnetic fields KW - Coronal density KW - Coronal studies KW - Solar magnetic field KW - Extrapolation KW - Acoustic waves KW - Temperature KW - Algorithms KW - Polarization KW - Coronal magnetic fields KW - Inversions KW - Magnetic fields KW - Currents KW - Inversion KW - Coronal emission lines KW - Noise pollution 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/1705083245?accountid=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=VECTOR+TOMOGRAPHY+FOR+THE+CORONAL+MAGNETIC+FIELD.+II.+HANLE+EFFECT+MEASUREMENTS&rft.au=Kramar%2C+M%3BInhester%2C+B%3BLin%2C+H%3BDavila%2C+J&rft.aulast=Kramar&rft.aufirst=M&rft.date=2013-09-20&rft.volume=775&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%2F775%2F1%2F25 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Last updated - 2015-11-16 N1 - SubjectsTermNotLitGenreText - Corona; Coronal density; Solar magnetic fields; Solar magnetic field; Coronal studies; Extrapolation; Acoustic waves; Algorithms; Coronal magnetic fields; Polarization; Inversions; Magnetic fields; Coronal emission lines; Noise pollution; Feasibility studies; Currents; Inversion; Temperature DO - http://dx.doi.org/10.1088/0004-637X/775/1/25 ER - TY - JOUR T1 - New stratospheric dust belt due to the Chelyabinsk Bolide AN - 1464889866; 2013-091235 AB - The Ozone Mapping Profiler Suite (OMPS) Limb Profiler (LP) on the recently launched NASA/NOAA NPP/Suomi satellite detected aerosol excess in the mid-stratosphere (25-45 km altitude) between 50 degrees N and 70 degrees N latitudes. OMPS/LP observations trace this aerosol plume to the meteor that struck near Chelyabinsk, Russia on 15 February 2013. This new dust layer, located above the Junge aerosol layer, has persisted over at least a 3 month period. Material collected on the ground following the bolide explosion showed that the meteor was mostly composed of olivine and pyroxenes. Simulations using Lagrangian and Eulerian atmospheric models trace the plume back to Chelyabinsk and confirm that the plume altitude was at altitudes between 25 and 45 km. The models also confirm the plume circumpolar longitudinal spreading observed by OMPS/LP, with propagation speeds up to 85 m/s. Abstract Copyright (2013), . American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Gorkavyi, Nick AU - Rault, D F AU - Newman, P A AU - da Silva, A M AU - Dudorov, A E Y1 - 2013/09/16/ PY - 2013 DA - 2013 Sep 16 SP - 4728 EP - 4733 PB - American Geophysical Union, Washington, DC VL - 40 IS - 17 SN - 0094-8276, 0094-8276 KW - silicates KW - bolides KW - olivine group KW - Russian Federation KW - meteors KW - atmospheric circulation KW - pyroxene group KW - Commonwealth of Independent States KW - stratosphere KW - transport KW - olivine KW - sediments KW - orthosilicates KW - atmospehere KW - chemical composition KW - chain silicates KW - clastic sediments KW - satellite methods KW - nesosilicates KW - Chelyabinsk Russian Federation KW - atmospheric transport KW - dust KW - aerosols KW - remote sensing KW - 02C:Geochemistry of rocks, soils, and sediments KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1464889866?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=New+stratospheric+dust+belt+due+to+the+Chelyabinsk+Bolide&rft.au=Gorkavyi%2C+Nick%3BRault%2C+D+F%3BNewman%2C+P+A%3Bda+Silva%2C+A+M%3BDudorov%2C+A+E&rft.aulast=Gorkavyi&rft.aufirst=Nick&rft.date=2013-09-16&rft.volume=40&rft.issue=17&rft.spage=4728&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2Fgrl.50788 L2 - http://www.agu.org/journals/gl/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2013-01-01 N1 - Number of references - 40 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2013-12-05 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - aerosols; atmospehere; atmospheric circulation; atmospheric transport; bolides; chain silicates; Chelyabinsk Russian Federation; chemical composition; clastic sediments; Commonwealth of Independent States; dust; meteors; nesosilicates; olivine; olivine group; orthosilicates; pyroxene group; remote sensing; Russian Federation; satellite methods; sediments; silicates; stratosphere; transport DO - http://dx.doi.org/10.1002/grl.50788 ER - TY - JOUR T1 - Textures and isotopic compositions of carbonaceous materials in A and B-type Stardust tracks; track 130 (Bidi), track 141 (Coki) and track 80 (Tule) AN - 1464884733; 2013-090964 AB - We analyzed carbonaceous materials in the two main morphological types of Stardust tracks (A, and B). We analyzed 71 particles ( approximately 1-10mu m in size) distributed along these tracks with transmission electron microscopy (TEM) and found carbon associated with 16 of them. The carbonaceous materials occur in five distinct morphologies: graphitic, smooth, dirty, spongy and globular, covering most of the range of morphologies observed in primitive meteorites and interplanetary dust particles. We measured N and C isotopic compositions on 5 of these particles and found that all but one have terrestrial isotopic compositions. The anomalous particle had a moderate (super 15) N enrichment (delta (super 15) N=150+ or -36 ppm, 2sigma ) and both globular and spongy morphologies. The carbonaceous materials are not preferentially associated with particles of a particular size but are randomly distributed in all three tracks. Abstract Copyright (2013) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Matrajt, Graciela AU - Messenger, Scott AU - Joswiak, Dave AU - Brownlee, Don Y1 - 2013/09/15/ PY - 2013 DA - 2013 Sep 15 SP - 65 EP - 79 PB - Elsevier, New York, NY VL - 117 SN - 0016-7037, 0016-7037 KW - ion probe data KW - isotopes KW - mass spectra KW - interplanetary dust KW - stable isotopes KW - nitrogen KW - infrared spectra KW - XANES spectra KW - meteorites KW - FTIR spectra KW - spectra KW - particulate materials KW - chemical composition KW - carbonaceous composition KW - N-15/N-14 KW - Stardust Mission KW - textures KW - isotope ratios KW - cosmochemistry KW - X-ray spectra KW - TEM data KW - organic compounds KW - cosmic dust KW - comets KW - hydrocarbons KW - nanoparticles KW - aromatic hydrocarbons KW - 05B:Petrology of meteorites and tektites KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1464884733?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Textures+and+isotopic+compositions+of+carbonaceous+materials+in+A+and+B-type+Stardust+tracks%3B+track+130+%28Bidi%29%2C+track+141+%28Coki%29+and+track+80+%28Tule%29&rft.au=Matrajt%2C+Graciela%3BMessenger%2C+Scott%3BJoswiak%2C+Dave%3BBrownlee%2C+Don&rft.aulast=Matrajt&rft.aufirst=Graciela&rft.date=2013-09-15&rft.volume=117&rft.issue=&rft.spage=65&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2013.04.014 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2013-01-01 N1 - Number of references - 73 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2013-12-05 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - aromatic hydrocarbons; carbonaceous composition; chemical composition; comets; cosmic dust; cosmochemistry; FTIR spectra; hydrocarbons; infrared spectra; interplanetary dust; ion probe data; isotope ratios; isotopes; mass spectra; meteorites; N-15/N-14; nanoparticles; nitrogen; organic compounds; particulate materials; spectra; stable isotopes; Stardust Mission; TEM data; textures; X-ray spectra; XANES spectra DO - http://dx.doi.org/10.1016/j.gca.2013.04.014 ER - TY - JOUR T1 - Channelized ice melting in the ocean boundary layer beneath Pine Island Glacier, Antarctica AN - 1447104038; 2013-083916 AB - Ice shelves play a key role in the mass balance of the Antarctic ice sheets by buttressing their seaward-flowing outlet glaciers; however, they are exposed to the underlying ocean and may weaken if ocean thermal forcing increases. An expedition to the ice shelf of the remote Pine Island Glacier, a major outlet of the West Antarctic Ice Sheet that has rapidly thinned and accelerated in recent decades, has been completed. Observations from geophysical surveys and long-term oceanographic instruments deployed down bore holes into the ocean cavity reveal a buoyancy-driven boundary layer within a basal channel that melts the channel apex by 0.06 meter per day, with near-zero melt rates along the flanks of the channel. A complex pattern of such channels is visible throughout the Pine Island Glacier shelf. JF - Science AU - Stanton, T P AU - Shaw, W J AU - Truffer, M AU - Corr, H F J AU - Peters, L E AU - Riverman, K L AU - Bindschadler, R AU - Holland, D M AU - Anandakrishnan, S Y1 - 2013/09/13/ PY - 2013 DA - 2013 Sep 13 SP - 1236 EP - 1239 PB - American Association for the Advancement of Science, Washington, DC VL - 341 IS - 6151 SN - 0036-8075, 0036-8075 KW - Southern Ocean KW - ice cores KW - time series analysis KW - thermal properties KW - statistical analysis KW - radar methods KW - rates KW - ice shelves KW - satellite methods KW - models KW - Antarctic ice sheet KW - melting KW - Antarctica KW - ice streams KW - West Antarctic ice sheet KW - ice-ocean boundary KW - thickness KW - glacial geology KW - ice-penetrating radar KW - remote sensing KW - Pine Island Glacier KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1447104038?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Channelized+ice+melting+in+the+ocean+boundary+layer+beneath+Pine+Island+Glacier%2C+Antarctica&rft.au=Stanton%2C+T+P%3BShaw%2C+W+J%3BTruffer%2C+M%3BCorr%2C+H+F+J%3BPeters%2C+L+E%3BRiverman%2C+K+L%3BBindschadler%2C+R%3BHolland%2C+D+M%3BAnandakrishnan%2C+S&rft.aulast=Stanton&rft.aufirst=T&rft.date=2013-09-13&rft.volume=341&rft.issue=6151&rft.spage=1236&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.1239373 L2 - http://www.sciencemag.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 17 N1 - PubXState - DC N1 - Document feature - illus. incl. sketch map N1 - Last updated - 2013-10-31 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - Antarctic ice sheet; Antarctica; glacial geology; ice cores; ice shelves; ice streams; ice-ocean boundary; ice-penetrating radar; melting; models; Pine Island Glacier; radar methods; rates; remote sensing; satellite methods; Southern Ocean; statistical analysis; thermal properties; thickness; time series analysis; West Antarctic ice sheet DO - http://dx.doi.org/10.1126/science.1239373 ER - TY - NEWS T1 - NASA Scientists Relate Urban Population to Air Pollution AN - 1430920129 JF - UPI Space Daily AU - Kathryn Hansen NASA's Earth Science News Y1 - 2013/09/09/ PY - 2013 DA - 2013 Sep 09 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1430920129?accountid=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+Scientists+Relate+Urban+Population+to+Air+Pollution&rft.au=Kathryn+Hansen+NASA%27s+Earth+Science+News&rft.aulast=Kathryn+Hansen+NASA%27s+Earth+Science+News&rft.aufirst=&rft.date=2013-09-09&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 - 2013-09-10 ER - TY - NEWS T1 - Comet ISON to fly by Mars AN - 1430810464 JF - UPI Space Daily AU - Dr. Tony Phillips for NASA Science News Y1 - 2013/09/09/ PY - 2013 DA - 2013 Sep 09 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1430810464?accountid=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=Comet+ISON+to+fly+by+Mars&rft.au=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2013-09-09&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 - 2013-09-09 ER - TY - CPAPER T1 - Nonlethal Health Assessments of Fish: Using Endocrinology Techniques to Study Stress and Sex Hormones As a Function of Health in Red Drum T2 - 143rd Annual Meeting of the American Fisheries Society (AFS 2013) AN - 1412145723; 6225445 JF - 143rd Annual Meeting of the American Fisheries Society (AFS 2013) AU - Garreau, Carla AU - Francis-Floyd, Ruth AU - Guillette Jr, Louis AU - Reyier, Eric AU - Yanong, Roy Y1 - 2013/09/08/ PY - 2013 DA - 2013 Sep 08 KW - Endocrinology KW - Stress KW - Fish KW - Hormones KW - Sex hormones UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1412145723?accountid=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=143rd+Annual+Meeting+of+the+American+Fisheries+Society+%28AFS+2013%29&rft.atitle=Nonlethal+Health+Assessments+of+Fish%3A+Using+Endocrinology+Techniques+to+Study+Stress+and+Sex+Hormones+As+a+Function+of+Health+in+Red+Drum&rft.au=Garreau%2C+Carla%3BFrancis-Floyd%2C+Ruth%3BGuillette+Jr%2C+Louis%3BReyier%2C+Eric%3BYanong%2C+Roy&rft.aulast=Garreau&rft.aufirst=Carla&rft.date=2013-09-08&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=143rd+Annual+Meeting+of+the+American+Fisheries+Society+%28AFS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://afs.confex.com/afs/2013/webprogram/meeting.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-06-30 N1 - Last updated - 2013-07-25 ER - TY - NEWS T1 - BRRISON: A Planetary Science Balloon Mission AN - 1430358790 JF - UPI Space Daily AU - Nancy Smith Kilkenny for Glenn Research Center Y1 - 2013/09/06/ PY - 2013 DA - 2013 Sep 06 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1430358790?accountid=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=BRRISON%3A+A+Planetary+Science+Balloon+Mission&rft.au=Nancy+Smith+Kilkenny+for+Glenn+Research+Center&rft.aulast=Nancy+Smith+Kilkenny+for+Glenn+Research+Center&rft.aufirst=&rft.date=2013-09-06&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 - 2013-09-06 ER - TY - JOUR T1 - African tropical rainforest net carbon dioxide fluxes in the twentieth century AN - 1554953159; 20369937 AB - The African humid tropical biome constitutes the second largest rainforest region, significantly impacts global carbon cycling and climate, and has undergone major changes in functioning owing to climate and land-use change over the past century. We assess changes and trends in CO2 fluxes from 1901 to 2010 using nine land surface models forced with common driving data, and depict the inter-model variability as the uncertainty in fluxes. The biome is estimated to be a natural (no disturbance) net carbon sink (-0.02 kg C m-2 yr-1 or -0.04 Pg C yr-1, p < 0.05) with increasing strength fourfold in the second half of the century. The models were in close agreement on net CO2 flux at the beginning of the century ( sigma 1901 = 0.02 kg C m-2 yr-1), but diverged exponentially throughout the century ( sigma 2010 = 0.03 kg C m-2 yr-1). The increasing uncertainty is due to differences in sensitivity to increasing atmospheric CO2, but not increasing water stress, despite a decrease in precipitation and increase in air temperature. However, the largest uncertainties were associated with the most extreme drought events of the century. These results highlight the need to constrain modelled CO2 fluxes with increasing atmospheric CO2 concentrations and extreme climatic events, as the uncertainties will only amplify in the next century. JF - Philosophical Transactions of the Royal Society of London, Series B: Biological Sciences AU - Fisher, Joshua B AU - Sikka, Munish AU - Sitch, Stephen AU - Ciais, Philippe AU - Poulter, Benjamin AU - Galbraith, David AU - Lee, Jung-Eun AU - Huntingford, Chris AU - Viovy, Nicolas AU - Zeng, Ning AU - Ahlstrom, Anders AU - Lomas, Mark R AU - Levy, Peter E AU - Frankenberg, Christian AU - Saatchi, Sassan AU - Malhi, Yadvinder AD - Jet Propulsion Laboratory, California Institute of Technology, , 4800 Oak Grove Drive, Pasadena, CA 91109, USA, jbfisher@jpl.nasa.gov Y1 - 2013/09/05/ PY - 2013 DA - 2013 Sep 05 SP - 20120376 PB - Royal Society of London, 6 Carlton House Terrace London SW1Y 5AG United Kingdom VL - 368 IS - 1625 SN - 0962-8436, 0962-8436 KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Aqualine Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Africa KW - carbon KW - Congo KW - rainforest KW - tropic KW - uncertainty KW - Variability KW - Resource management KW - Climate change KW - Sinks KW - Drought KW - Air temperature KW - Water Stress KW - Carbon KW - Droughts KW - Climate models KW - Carbon cycle KW - Precipitation KW - Land use KW - Ecosystem disturbance KW - Model Studies KW - Tropical environment KW - Carbon dioxide KW - Carbon sinks KW - Fluctuations KW - Carbon Dioxide KW - AQ 00001:Water Resources and Supplies KW - SW 5010:Network design KW - Q2 09184:Composition of water KW - Q5 08502:Methods and instruments KW - M2 551.510.3/.4:Physical Properties/Composition (551.510.3/.4) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1554953159?accountid=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=Philosophical+Transactions+of+the+Royal+Society+of+London%2C+Series+B%3A+Biological+Sciences&rft.atitle=African+tropical+rainforest+net+carbon+dioxide+fluxes+in+the+twentieth+century&rft.au=Fisher%2C+Joshua+B%3BSikka%2C+Munish%3BSitch%2C+Stephen%3BCiais%2C+Philippe%3BPoulter%2C+Benjamin%3BGalbraith%2C+David%3BLee%2C+Jung-Eun%3BHuntingford%2C+Chris%3BViovy%2C+Nicolas%3BZeng%2C+Ning%3BAhlstrom%2C+Anders%3BLomas%2C+Mark+R%3BLevy%2C+Peter+E%3BFrankenberg%2C+Christian%3BSaatchi%2C+Sassan%3BMalhi%2C+Yadvinder&rft.aulast=Fisher&rft.aufirst=Joshua&rft.date=2013-09-05&rft.volume=368&rft.issue=1625&rft.spage=20120376&rft.isbn=&rft.btitle=&rft.title=Philosophical+Transactions+of+the+Royal+Society+of+London%2C+Series+B%3A+Biological+Sciences&rft.issn=09628436&rft_id=info:doi/10.1098%2Frstb.2012.0376 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-08-01 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Resource management; Tropical environment; Climate change; Carbon cycle; Carbon sinks; Carbon dioxide; Droughts; Ecosystem disturbance; Air temperature; Climate models; Precipitation; Drought; Land use; Variability; Carbon; Sinks; Fluctuations; Water Stress; Model Studies; Carbon Dioxide; Africa DO - http://dx.doi.org/10.1098/rstb.2012.0376 ER - TY - JOUR T1 - Isotopic biosignatures in carbonate-rich, cyanobacteria-dominated microbial mats of the Cariboo Plateau, B.C. AN - 1645571413; 2015-005723 AB - Photosynthetic activity in carbonate-rich benthic microbial mats located in saline, alkaline lakes on the Cariboo Plateau, B.C. resulted in pCO (sub 2) below equilibrium and delta (super 13) C (sub DIC) values up to +6.0 ppm above predicted carbon dioxide (CO (sub 2) ) equilibrium values, representing a biosignature of photosynthesis. Mat-associated delta (super 13) C (sub carb) values ranged from approximately 4 to 8 ppm within any individual lake, with observations of both enrichments (up to 3.8 ppm) and depletions (up to 11.6 ppm) relative to the concurrent dissolved inorganic carbon (DIC). Seasonal and annual variations in delta (super 13) C values reflected the balance between photosynthetic (super 13) C-enrichment and heterotrophic inputs of (super 13) C-depleted DIC. Mat microelectrode profiles identified oxic zones where delta (super 13) C (sub carb) was within 0.2 ppm of surface DIC overlying anoxic zones associated with sulphate reduction where delta (super 13) C (sub carb) was depleted by up to 5 ppm relative to surface DIC reflecting inputs of (super 13) C-depleted DIC. delta (super 13) C values of sulphate reducing bacteria biomarker phospholipid fatty acids (PLFA) were depleted relative to the bulk organic matter by approximately 4 ppm, consistent with heterotrophic synthesis, while the majority of PLFA had larger offsets consistent with autotrophy. Mean delta (super 13) C (sub org) values ranged from -18.7 + or - 0.1 to -25.3 + or - 1.0 ppm with mean Delta (super 13) C (sub inorg-org) values ranging from 21.1 to 24.2 ppm, consistent with non-CO (sub 2) -limited photosynthesis, suggesting that Precambrian delta (super 13) C (sub org) values of approximately -26 ppm do not necessitate higher atmospheric CO (sub 2) concentrations. Rather, it is likely that the high DIC and carbonate content of these systems provide a non-limiting carbon source allowing for expression of large photosynthetic offsets, in contrast to the smaller offsets observed in saline, organic-rich and hot spring microbial mats. Abstract Copyright (2010), John Wiley & Sons, Ltd. JF - Geobiology AU - Brady, A L AU - Druschel, G AU - Leoni, L AU - Lim, D S S AU - Slater, G F Y1 - 2013/09// PY - 2013 DA - September 2013 SP - 437 EP - 456 PB - Blackwell, Oxford VL - 11 IS - 5 SN - 1472-4677, 1472-4677 KW - photosynthesis KW - fatty acids KW - X-ray diffraction data KW - isotopes KW - Cariboo Plateau KW - microbial mats KW - stable isotopes KW - Goodenough Lake KW - mineral composition KW - carbon KW - carboxylic acids KW - Deer Lake KW - organic carbon KW - sedimentary structures KW - cyanobacteria KW - isotope ratios KW - biogenic structures KW - C-13/C-12 KW - photochemistry KW - British Columbia KW - biomarkers KW - Probe Lake KW - geochemical cycle KW - organic compounds KW - organic acids KW - Canada KW - lacustrine environment KW - Western Canada KW - carbon cycle KW - 06A:Sedimentary petrology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1645571413?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Isotopic+biosignatures+in+carbonate-rich%2C+cyanobacteria-dominated+microbial+mats+of+the+Cariboo+Plateau%2C+B.C.&rft.au=Brady%2C+A+L%3BDruschel%2C+G%3BLeoni%2C+L%3BLim%2C+D+S+S%3BSlater%2C+G+F&rft.aulast=Brady&rft.aufirst=A&rft.date=2013-09-01&rft.volume=11&rft.issue=5&rft.spage=437&rft.isbn=&rft.btitle=&rft.title=Geobiology&rft.issn=14724677&rft_id=info:doi/10.1111%2Fgbi.12050 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 - 130 N1 - Document feature - illus. incl. 5 tables, sketch map N1 - Last updated - 2015-01-15 N1 - SubjectsTermNotLitGenreText - biogenic structures; biomarkers; British Columbia; C-13/C-12; Canada; carbon; carbon cycle; carboxylic acids; Cariboo Plateau; cyanobacteria; Deer Lake; fatty acids; geochemical cycle; Goodenough Lake; isotope ratios; isotopes; lacustrine environment; microbial mats; mineral composition; organic acids; organic carbon; organic compounds; photochemistry; photosynthesis; Probe Lake; sedimentary structures; stable isotopes; Western Canada; X-ray diffraction data DO - http://dx.doi.org/10.1111/gbi.12050 ER - TY - JOUR T1 - Ground penetrating radar geologic field studies of the ejecta of Barringer Meteorite Crater, Arizona, as a planetary analog AN - 1542646132; 2014-048335 AB - Ground penetrating radar (GPR) has been a useful geophysical tool in investigating a variety of shallow subsurface geological environments on Earth. Here we investigate the capabilities of GPR to provide useful geologic information in one of the most common geologic settings of planetary surfaces, impact crater ejecta. Three types of ejecta are surveyed with GPR at two wavelengths (400 MHz, 200 MHz) at Meteor Crater, Arizona, with the goal of capturing the GPR signature of the subsurface rock population. In order to "ground truth" the GPR characterization, subsurface rocks are visually counted and measured in preexisting subsurface exposures immediately adjacent to and below the GPR transect. The rock size-frequency distribution from 10 to 50 cm based on visual counts is well described by both power law and exponential functions, the former slightly better, reflecting the control of fragmentation processes during the impact-ejection event. GPR counts are found to overestimate the number of subsurface rocks in the upper meter (by a factor of 2-3x) and underestimate in the second meter of depth (0.6-1.0x), results attributable to the highly scattering nature of blocky ejecta. Overturned ejecta that is fractured yet in which fragments are minimally displaced from their complement fragments produces fewer GPR returns than well-mixed ejecta. The use of two wavelengths and division of results into multiple depth zones provides multiple aspects by which to characterize the ejecta block population. Remote GPR measurement of subsurface ejecta in future planetary situations with no subsurface exposure can be used to characterize those rock populations relative to that of Meteor Crater. Abstract Copyright (2013), American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Russell, Patrick S AU - Grant, John A AU - Williams, Kevin K AU - Carter, Lynn M AU - Garry, W Brent AU - Daubar, Ingrid J Y1 - 2013/09// PY - 2013 DA - September 2013 SP - 1915 EP - 1933 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 9 SN - 2169-9097, 2169-9097 KW - United States KW - fragmentation KW - Coconino County Arizona KW - power law KW - impact features KW - geophysical surveys KW - ground-penetrating radar KW - Mars KW - ground truth KW - Meteor Crater KW - size-frequency distribution KW - Moon KW - geophysical methods KW - radar methods KW - ejecta KW - depth KW - size KW - terrestrial planets KW - planets KW - fragments KW - natural analogs KW - Arizona KW - surveys KW - terrestrial comparison KW - impact craters KW - field studies KW - 23:Geomorphology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1542646132?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Ground+penetrating+radar+geologic+field+studies+of+the+ejecta+of+Barringer+Meteorite+Crater%2C+Arizona%2C+as+a+planetary+analog&rft.au=Russell%2C+Patrick+S%3BGrant%2C+John+A%3BWilliams%2C+Kevin+K%3BCarter%2C+Lynn+M%3BGarry%2C+W+Brent%3BDaubar%2C+Ingrid+J&rft.aulast=Russell&rft.aufirst=Patrick&rft.date=2013-09-01&rft.volume=118&rft.issue=9&rft.spage=1915&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2Fjgre.20145 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 - 2014-01-01 N1 - Number of references - 80 N1 - PubXState - DC N1 - Document feature - illus. incl. sect., 3 tables, geol. sketch map N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - Arizona; Coconino County Arizona; depth; ejecta; field studies; fragmentation; fragments; geophysical methods; geophysical surveys; ground truth; ground-penetrating radar; impact craters; impact features; Mars; Meteor Crater; Moon; natural analogs; planets; power law; radar methods; size; size-frequency distribution; surveys; terrestrial comparison; terrestrial planets; United States DO - http://dx.doi.org/10.1002/jgre.20145 ER - TY - JOUR T1 - The self-sputtered contribution to the lunar exosphere AN - 1542644774; 2014-048336 AB - The lunar exosphere is produced by a combination of processes including thermal desorption, micrometeoroid bombardment, internal gas release, photon-stimulated desorption, and charged-particle sputtering. Here we investigate an additional mechanism not previously considered for the Moon, namely the role that newly born ions from the exosphere itself play in sputtering additional neutrals from the lunar surface, known as self-sputtering. Our calculations suggest that this process may sputter neutrals into the lunar exosphere at a rate equal to or greater than charged-particle sputtering due to passage through the Earth's plasma sheet when spatially averaged over the lunar dayside, while locally, self-sputtering may equal or exceed solar wind charged-particle sputtering and micrometeoroid bombardment. We use known or modeled densities and distributions of exospheric neutrals, laboratory-derived values for the photoionization rates and neutral sputtering yields, and knowledge of the ambient electromagnetic environment at the Moon to derive estimates of the self-sputtered neutral flux. We present the spatial variation of the self-sputtered neutral flux and discuss the implications thereof. Abstract Copyright (2013), American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Poppe, A R AU - Halekas, J S AU - Sarantos, M AU - Delory, G T Y1 - 2013/09// PY - 2013 DA - September 2013 SP - 1934 EP - 1944 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 9 SN - 2169-9097, 2169-9097 KW - desorption KW - plasma KW - density KW - Moon KW - solar wind KW - impacts KW - ions KW - exosphere KW - coronal mass ejections KW - spatial distribution KW - micrometeorites KW - meteorites KW - Lunar Atmosphere and Dust Environment Explorer KW - photoionization KW - self-sputtering KW - electromagnetic field KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1542644774?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+self-sputtered+contribution+to+the+lunar+exosphere&rft.au=Poppe%2C+A+R%3BHalekas%2C+J+S%3BSarantos%2C+M%3BDelory%2C+G+T&rft.aulast=Poppe&rft.aufirst=A&rft.date=2013-09-01&rft.volume=118&rft.issue=9&rft.spage=1934&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2Fjgre.20148 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 - 2014-01-01 N1 - Number of references - 69 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - coronal mass ejections; density; desorption; electromagnetic field; exosphere; impacts; ions; Lunar Atmosphere and Dust Environment Explorer; meteorites; micrometeorites; Moon; photoionization; plasma; self-sputtering; solar wind; spatial distribution DO - http://dx.doi.org/10.1002/jgre.20148 ER - TY - JOUR T1 - Antipodal terrains created by the Rheasilvia Basin forming impact on asteroid 4 Vesta AN - 1542644032; 2014-048329 AB - The Rheasilvia impact on asteroid 4 Vesta may have been sufficiently large to create disrupted terrains at the impact antipode. This paper investigates the amount of deformation expected at the Rheasilvia antipode using numerical models of sufficient resolution to directly observe terrain modification and material displacements following the arrival of impact stresses. We find that the magnitude and mode of deformation expected at the impact antipode is strongly dependent on both the sound speed and porosity of Vesta's mantle, as well as the strength of the Vestan core. In the case of low mantle porosities and high core strengths, we predict the existence of a topographic high (a peak) caused by the collection of spalled and uplifted material at the antipode. Observations by NASA's Dawn spacecraft cannot provide definite evidence that large amounts of deformation occurred at the Rheasilvia antipode, largely due to the presence of younger large impact craters in the region. However, a deficiency of small craters near the antipodal point suggests that some degree of deformation did occur. Abstract Copyright (2013), American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Bowling, T J AU - Johnson, B C AU - Melosh, H J AU - Ivanov, B A AU - O'Brien, D P AU - Gaskell, R AU - Marchi, S Y1 - 2013/09// PY - 2013 DA - September 2013 SP - 1821 EP - 1834 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 9 SN - 2169-9097, 2169-9097 KW - shear strength KW - numerical models KW - impact features KW - asteroids KW - Vesta Asteroid KW - strain KW - strength KW - Rheasilvia Basin KW - uplifts KW - mantle KW - impacts KW - deformation KW - Dawn Mission KW - porosity KW - lower mantle KW - topography KW - terrains KW - hypervelocity impacts KW - velocity KW - hydrodynamics KW - impact craters KW - core KW - dilation KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1542644032?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Antipodal+terrains+created+by+the+Rheasilvia+Basin+forming+impact+on+asteroid+4+Vesta&rft.au=Bowling%2C+T+J%3BJohnson%2C+B+C%3BMelosh%2C+H+J%3BIvanov%2C+B+A%3BO%27Brien%2C+D+P%3BGaskell%2C+R%3BMarchi%2C+S&rft.aulast=Bowling&rft.aufirst=T&rft.date=2013-09-01&rft.volume=118&rft.issue=9&rft.spage=1821&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2Fjgre.20123 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 - 2014-01-01 N1 - Number of references - 55 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - asteroids; core; Dawn Mission; deformation; dilation; hydrodynamics; hypervelocity impacts; impact craters; impact features; impacts; lower mantle; mantle; numerical models; porosity; Rheasilvia Basin; shear strength; strain; strength; terrains; topography; uplifts; velocity; Vesta Asteroid DO - http://dx.doi.org/10.1002/jgre.20123 ER - TY - JOUR T1 - Core shell stationary phases for a novel separation of triglycerides in plant oils by high performance liquid chromatography with electrospray-quadrupole-time of flight mass spectrometer AN - 1513452417; 19250664 AB - A new method for the analysis of triglycerides (TAGs) in vegetable oils was developed using a Poroshell 120 EC-C18 column (3.0 mm A 50 mm, 2.7 mu m) with a high resolution ESI-Q-ToF tandem mass spectrometer as detection system. We used an Agilent Poroshell column, which is characterized by a recently developed stationary phase based on non-porous core particles. The results highlighted the advantages of this column in terms of the dramatic improvement in the number of theoretical plates and in low column backpressure. The developed method enabled us to analyze complex mixtures of more than 40 TAGs within less than 25 min and with a low backpressure (lower than 100 bar), and represents the first application of a core-shell stationary phase in reverse phase HPLC using an ESI-Q-ToF as detection system. The method was optimized on standards of TAGs, validated and applied to several plant oils. By a quantitative point of view, the method showed a very good linearity (r2 > 0.999) in the range 0.1a2.4 mu g/g; high intra- and inter-day precision both in terms of retention times (RSD% < 0.04%) and peak areas (RSD% < 0.3%). Limits of detection and quantitation were lower than 0.03 mu g/g and 0.10 mu g/g, respectively. JF - Journal of Chromatography A AU - Nasa, Jacopo AU - Ghelardi, Elisa AU - Degano, Ilaria AU - Modugno, Francesca AU - Colombini, Maria Y1 - 2013/09/01/ PY - 2013 DA - 2013 Sep 01 SP - 114 EP - 124 PB - Elsevier B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 1308 SN - 0021-9673, 0021-9673 KW - ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Aqualine Abstracts KW - Triglycerides KW - HPLC KW - ESI-Q-ToF KW - Coreashell stationary phase KW - Poroshell 120 EC-C18 KW - Vegetable oils KW - Retention Time KW - Chromatographic techniques KW - Oil KW - Tags KW - Cores KW - Precision KW - Liquid Chromatography KW - Standards KW - Spectrometers KW - New species KW - SW 5010:Network design KW - Q5 08502:Methods and instruments KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1513452417?accountid=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+Chromatography+A&rft.atitle=Core+shell+stationary+phases+for+a+novel+separation+of+triglycerides+in+plant+oils+by+high+performance+liquid+chromatography+with+electrospray-quadrupole-time+of+flight+mass+spectrometer&rft.au=Nasa%2C+Jacopo%3BGhelardi%2C+Elisa%3BDegano%2C+Ilaria%3BModugno%2C+Francesca%3BColombini%2C+Maria&rft.aulast=Nasa&rft.aufirst=Jacopo&rft.date=2013-09-01&rft.volume=1308&rft.issue=&rft.spage=114&rft.isbn=&rft.btitle=&rft.title=Journal+of+Chromatography+A&rft.issn=00219673&rft_id=info:doi/10.1016%2Fj.chroma.2013.08.015 L2 - http://www.sciencedirect.com/science/article/pii/S0021967313012442 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-12-01 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - HPLC; Tags; Chromatographic techniques; New species; Oil; Cores; Retention Time; Precision; Liquid Chromatography; Standards; Spectrometers DO - http://dx.doi.org/10.1016/j.chroma.2013.08.015 ER - TY - JOUR T1 - Supersonic jet noise reduction by microjet injection AN - 1448709411; 18609693 AB - The effect of microjet ( mu jet) injection on the noise from supersonic jets is investigated. One convergent and three convergent-divergent (C-D) nozzles, covering design Mach numbers (M sub(D)) 1.0 to 2.2, are used in the study; all nozzles have the same exit diameter (D). The njets are injected perpendicular to the primary jet at the nozzle lip from six equally-spaced ports; each port has a diameter of 0.0054D. Effects in the over-expanded and under-expanded regimes as well as one case of fully expanded condition are explored. Relative to the effect of subsonic jets, larger reduction in the overall sound pressure level (OASPL) is achieved in most supersonic conditions. While the injection readily eliminates screech tones with the convergent nozzle it becomes increasingly ineffective in screech reduction with nozzles of higher M sub(D). With all nozzles, the injection is often found to amplify the broadband shock-associated noise; the overall noise reduction occurs due to a suppression of broadband levels especially at lower frequencies. With the shock still within the divergent section of the C-D nozzles, there is 'excess broadband noise' and sometimes there are 'transonic tones'; the injection is found to affect the tones very little but reduce the broadband noise component significantly. For shock-free, fully expanded condition, the OASPL reduction in the peak noise radiation direction is comparable to that in a subsonic case; the same correlation, found earlier for subsonic cases, applies. JF - Noise and Vibration in Industry AU - Zaman, KBMQ AD - NASA Glenn Research Center, Cleveland, OH 44135. USA Y1 - 2013/09// PY - 2013 DA - Sep 2013 SP - 152 EP - 153 PB - Multi-Science Publishing Co. Ltd., 107 High St. Brentwood, Essex CM14 4RX United Kingdom VL - 27 IS - 4 SN - 0950-8163, 0950-8163 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Environment Abstracts KW - Vibration KW - Noise levels KW - Port installations KW - Noise reduction KW - Sound pressure KW - ENA 10:Noise Pollution KW - Q2 09202:Methods and instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1448709411?accountid=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=Noise+and+Vibration+in+Industry&rft.atitle=Supersonic+jet+noise+reduction+by+microjet+injection&rft.au=Zaman%2C+KBMQ&rft.aulast=Zaman&rft.aufirst=KBMQ&rft.date=2013-09-01&rft.volume=27&rft.issue=4&rft.spage=152&rft.isbn=&rft.btitle=&rft.title=Noise+and+Vibration+in+Industry&rft.issn=09508163&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-11-01 N1 - Last updated - 2015-09-30 N1 - SubjectsTermNotLitGenreText - Noise reduction; Sound pressure; Vibration; Noise levels; Port installations ER - TY - JOUR T1 - Three-dimensional observation and morphological analysis of organic nanoglobules in a carbonaceous chondrite using X-ray micro-tomography AN - 1442375669; 2013-080055 AB - Organic nanoglobules are submicrometer spherical, often hollow organic grains ubiquitously distributed throughout primitive solar materials, such as carbonaceous chondrites. Until now, organic nanoglobules have been examined by TEM only after sectioning by ultramicrotomy so it has not been possible to determine whether fluids or mineral grains occur in the hollow cores. H (sub 2) O-rich fluids might be present in hollows of the nanoglobules if they originate from dust particles composed of organic materials and ice prior to or in an early stage of the solar system formation or fluids incorporated into nanoglobules during aqueous alteration on the asteroidal parent body. In order to determine whether or not any fluids or mineral grains are present in the nanoglobules, a carbonaceous chondrite sample (Tagish Lake C2 meteorite) was observed non-destructively using synchrotron radiation-based X-ray CT (computed tomography), and then microtomed sections were observed using a transmission electron microscope (TEM). We observed three-dimensional shapes of thirty-eight organic nanoglobules in the meteorite sample. Their size and shape distributions are consistent with a hypothesis that nanoglobules originate from icy dust particles. Nanoglobule candidates observed in CT images were confirmed by the TEM images. However, the presence or absence of fluid could not be judged because CT images of nanoglobules are affected by X-ray refraction. Simulation of CT images by considering X-ray refraction shows that the presence or absence of water in nanoglobules cannot be distinguished with CT images alone. However the outer shapes of nanoglobules can be determined quantitatively and nanoglobules containing silicate cores can be easily identified. The thirty-eight nanoglobules we examined did not have silicate cores. Abstract Copyright (2013) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Matsumoto, Toru AU - Tsuchiyama, Akira AU - Nakamura-Messenger, Keiko AU - Nakano, Tsukasa AU - Uesugi, Kentaro AU - Takeuchi, Akihisa AU - Zolensky, Michael E Y1 - 2013/09/01/ PY - 2013 DA - 2013 Sep 01 SP - 84 EP - 95 PB - Elsevier, New York, NY VL - 116 SN - 0016-7037, 0016-7037 KW - tomography KW - stony meteorites KW - three-dimensional models KW - textures KW - biochemistry KW - Tagish Lake Meteorite KW - cosmochemistry KW - carbonaceous chondrites KW - refraction KW - simulation KW - TEM data KW - meteorites KW - organic compounds KW - mineral composition KW - chondrites KW - nanoparticles KW - microtomography KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442375669?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Three-dimensional+observation+and+morphological+analysis+of+organic+nanoglobules+in+a+carbonaceous+chondrite+using+X-ray+micro-tomography&rft.au=Matsumoto%2C+Toru%3BTsuchiyama%2C+Akira%3BNakamura-Messenger%2C+Keiko%3BNakano%2C+Tsukasa%3BUesugi%2C+Kentaro%3BTakeuchi%2C+Akihisa%3BZolensky%2C+Michael+E&rft.aulast=Matsumoto&rft.aufirst=Toru&rft.date=2013-09-01&rft.volume=116&rft.issue=&rft.spage=84&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2012.05.007 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2013-01-01 N1 - Number of references - 42 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2013-10-17 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - biochemistry; carbonaceous chondrites; chondrites; cosmochemistry; meteorites; microtomography; mineral composition; nanoparticles; organic compounds; refraction; simulation; stony meteorites; Tagish Lake Meteorite; TEM data; textures; three-dimensional models; tomography DO - http://dx.doi.org/10.1016/j.gca.2012.05.007 ER - TY - JOUR T1 - The age and composition of the pre-Cenozoic basement of the Jalisco Block; implications for and relation to the Guerrero composite terrane AN - 1442375429; 2013-080105 AB - The Jalisco Block is thought to be part of the Guerrero terrane, but the nature and age of the underlying crystalline basement are largely unknown. We have collected a suite of schists, granitoids, and weakly metamorphosed marine sediments from various parts of the Jalisco Block including Atenguillo and Ameca, Mascota and San Sebastian, Cuale, Puerto Vallarta, Punta Mita, Yelapa, and Tomatlan. The schists range in age from 135 to 161 Ma, with many exhibiting Proterozoic and Phanerozoic zircon ages. The granitoids range in age from 65 to 90 Ma, and are calc-alkaline compositionally-similar to granitoids from the Puerto Vallarta and Los Cabos batholiths. The Jalisco granitoids also experienced similar uplift rates to granitoids from the regions to the north and south of the Jalisco Block. The marine sediments yield a maximum depositional age of 131 Ma, and also contain a significant zircon population with ages extending back to the Archean. Granitoids from this study define two age groups, even after the effects of thermal resetting and different closure temperatures are considered. The 66.8-Ma silicic ash flow tuff near Union de Tula significantly expands the extent of this Cretaceous-Paleocene age ash flow tuff unit within the Jalisco Block, and we propose calling the unit "Carmichael silicic ash flow tuff volcanic succession" in honor of Ian Carmichael. The ages of the basement schists in the Jalisco Block fully overlap with the ages of terranes of continental Mexico, and other parts of the Guerrero terrane in the south, confirming the autochthonous origin of the Jalisco Block rather than exotic arc or allochthonous origin. Geologic data, in combination with geochronologic and oxygen isotopic data, suggest the evolution of SW Mexico with an early 200-1,200-Ma passive margin, followed by steep subduction in a continental arc setting at 160-165 Ma, then shallower subduction by 135 Ma, and finally, emplacement of granitoids at 65-90 Ma. Copyright 2013 Springer-Verlag Berlin Heidelberg and Springer-Verlag (outside the USA) JF - Contributions to Mineralogy and Petrology AU - Valencia, Victor A AU - Righter, Kevin AU - Rosas Elguera, Jose AU - Lopez Martinez, Margarita AU - Grove, Marty Y1 - 2013/09// PY - 2013 DA - September 2013 SP - 801 EP - 824 PB - Springer International, Heidelberg - New York VL - 166 IS - 3 SN - 0010-7999, 0010-7999 KW - silicates KW - U/Pb KW - granites KW - uplifts KW - mass spectra KW - sedimentary rocks KW - plutonic rocks KW - mineral composition KW - metamorphic rocks KW - orthosilicates KW - absolute age KW - batholiths KW - calc-alkalic composition KW - zircon group KW - Puerto Vallarta Batholith KW - textures KW - schists KW - basement KW - zircon KW - Paleogene KW - Mesoproterozoic KW - Union de Tula Mexico KW - Tertiary KW - intrusions KW - Mexico KW - island arcs KW - Trans-Mexican volcanic belt KW - volcanic rocks KW - upper Precambrian KW - Jalisco Mexico KW - igneous rocks KW - Guerrero Terrane KW - Cenozoic KW - Los Cabos Batholith KW - Jalisco Block KW - major elements KW - dates KW - X-ray fluorescence spectra KW - tuff KW - spectra KW - trace elements KW - chemical composition KW - geochemistry KW - Precambrian KW - Jurassic KW - Proterozoic KW - Mesozoic KW - nesosilicates KW - ICP mass spectra KW - pyroclastics KW - 03:Geochronology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442375429?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Contributions+to+Mineralogy+and+Petrology&rft.atitle=The+age+and+composition+of+the+pre-Cenozoic+basement+of+the+Jalisco+Block%3B+implications+for+and+relation+to+the+Guerrero+composite+terrane&rft.au=Valencia%2C+Victor+A%3BRighter%2C+Kevin%3BRosas+Elguera%2C+Jose%3BLopez+Martinez%2C+Margarita%3BGrove%2C+Marty&rft.aulast=Valencia&rft.aufirst=Victor&rft.date=2013-09-01&rft.volume=166&rft.issue=3&rft.spage=801&rft.isbn=&rft.btitle=&rft.title=Contributions+to+Mineralogy+and+Petrology&rft.issn=00107999&rft_id=info:doi/10.1007%2Fs00410-013-0908-z L2 - http://www.springerlink.com/(zmx2wiu4y01pcgigj5i3jxf5)/app/home/journal.asp?referrer=parent&backto=linkingpublicationresults,1:100406,1 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data supplied by Springer Verlag, Berlin, Federal Republic of Germany N1 - Date revised - 2013-01-01 N1 - Number of references - 138 N1 - Document feature - illus. incl. 5 tables, geol. sketch maps N1 - Last updated - 2013-10-17 N1 - CODEN - CMPEAP N1 - SubjectsTermNotLitGenreText - absolute age; basement; batholiths; calc-alkalic composition; Cenozoic; chemical composition; dates; geochemistry; granites; Guerrero Terrane; ICP mass spectra; igneous rocks; intrusions; island arcs; Jalisco Block; Jalisco Mexico; Jurassic; Los Cabos Batholith; major elements; mass spectra; Mesoproterozoic; Mesozoic; metamorphic rocks; Mexico; mineral composition; nesosilicates; orthosilicates; Paleogene; plutonic rocks; Precambrian; Proterozoic; Puerto Vallarta Batholith; pyroclastics; schists; sedimentary rocks; silicates; spectra; Tertiary; textures; trace elements; Trans-Mexican volcanic belt; tuff; U/Pb; Union de Tula Mexico; uplifts; upper Precambrian; volcanic rocks; X-ray fluorescence spectra; zircon; zircon group DO - http://dx.doi.org/10.1007/s00410-013-0908-z ER - TY - JOUR T1 - United States Forest Disturbance Trends Observed Using Landsat Time Series AN - 1434018306; 18475419 AB - Disturbance events strongly affect the composition, structure, and function of forest ecosystems; however, existing US land management inventories were not designed to monitor disturbance. To begin addressing this gap, the North American Forest Dynamics (NAFD) project has examined a geographic sample of 50 Landsat satellite image time series to assess trends in forest disturbance across the conterminous United States for 1985-2005. The geographic sample design used a probability-based scheme to encompass major forest types and maximize geographic dispersion. For each sample location disturbance was identified in the Landsat series using the Vegetation Change Tracker (VCT) algorithm. The NAFD analysis indicates that, on average, 2.77 Mha y super(-1) of forests were disturbed annually, representing 1.09% y super(-1) of US forestland. These satellite-based national disturbance rates estimates tend to be lower than those derived from land management inventories, reflecting both methodological and definitional differences. In particular, the VCT approach used with a biennial time step has limited sensitivity to low-intensity disturbances. Unlike prior satellite studies, our biennial forest disturbance rates vary by nearly a factor of two between high and low years. High western US disturbance rates were associated with active fire years and insect activity, whereas variability in the east is more strongly related to harvest rates in managed forests. We note that generating a geographic sample based on representing forest type and variability may be problematic because the spatial pattern of disturbance does not necessarily correlate with forest type. We also find that the prevalence of diffuse, non-stand-clearing disturbance in US forests makes the application of a biennial geographic sample problematic. Future satellite-based studies of disturbance at regional and national scales should focus on wall-to-wall analyses with annual time step for improved accuracy. JF - Ecosystems AU - Masek, Jeffrey G AU - Goward, Samuel N AU - Kennedy, Robert E AU - Cohen, Warren B AU - Moisen, Gretchen G AU - Schleeweis, Karen AU - Huang, Chengquan AD - Biospheric Sciences Laboratory (Code 618), NASA Goddard Space Flight Center, Greenbelt, Maryland, 20771, USA, Jeffrey.G.Masek@nasa.gov Y1 - 2013/09// PY - 2013 DA - September 2013 SP - 1087 EP - 1104 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 16 IS - 6 SN - 1432-9840, 1432-9840 KW - Environment Abstracts; Ecology Abstracts; Sustainability Science Abstracts KW - Forest management KW - Ecosystems KW - Spatial distribution KW - Remote sensing KW - Algorithms KW - Forests KW - Time series analysis KW - Structure-function relationships KW - Sensitivity KW - Inventories KW - Fires KW - Forest ecosystems KW - Land management KW - Satellites KW - Insects KW - USA KW - Landsat KW - Vegetation changes KW - Disturbance KW - M3 1010:Issues in Sustainable Development KW - ENA 21:Wildlife KW - D 04060:Management and Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1434018306?accountid=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=Ecosystems&rft.atitle=United+States+Forest+Disturbance+Trends+Observed+Using+Landsat+Time+Series&rft.au=Masek%2C+Jeffrey+G%3BGoward%2C+Samuel+N%3BKennedy%2C+Robert+E%3BCohen%2C+Warren+B%3BMoisen%2C+Gretchen+G%3BSchleeweis%2C+Karen%3BHuang%2C+Chengquan&rft.aulast=Masek&rft.aufirst=Jeffrey&rft.date=2013-09-01&rft.volume=16&rft.issue=6&rft.spage=1087&rft.isbn=&rft.btitle=&rft.title=Ecosystems&rft.issn=14329840&rft_id=info:doi/10.1007%2Fs10021-013-9669-9 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-09-01 N1 - Number of references - 60 N1 - Last updated - 2016-08-03 N1 - SubjectsTermNotLitGenreText - Fires; Inventories; Landsat; Vegetation changes; Structure-function relationships; Algorithms; Forests; Disturbance; Satellites; Sensitivity; Forest management; Forest ecosystems; Land management; Spatial distribution; Ecosystems; Remote sensing; Time series analysis; Insects; USA DO - http://dx.doi.org/10.1007/s10021-013-9669-9 ER - TY - JOUR T1 - Use of continuous renal replacement therapy in acute aluminum phosphide poisoning: a novel therapy. AN - 1424324133; 23865388 AB - Aluminum phosphide is most common cause of poisoning in northern India. There is no specific antidote available and management of such cases is mainly supportive with high mortality. We present two cases of severe acute aluminium phosphide poisoning where continuous renal replacement therapy (CRRT) was started early along with other resuscitative measures and both the patients survived. JF - Renal failure AU - Nasa, Prashant AU - Gupta, Ankur AU - Mangal, Kishore AU - Nagrani, S K AU - Raina, Sanjay AU - Yadav, Rohit AD - Department of Critical Care Medicine, Max Superspeciality Hospital, Shalimar Bagh, New Delhi, India. dr.prashantnasa@hotmail.com Y1 - 2013/09// PY - 2013 DA - September 2013 SP - 1170 EP - 1172 VL - 35 IS - 8 KW - Aluminum Compounds KW - 0 KW - Pesticides KW - Phosphines KW - aluminum phosphide KW - E23DR6L59S KW - Index Medicus KW - Young Adult KW - Humans KW - Adult KW - Poisoning -- therapy KW - Male KW - Female KW - India KW - Pesticides -- poisoning KW - Aluminum Compounds -- poisoning KW - Renal Replacement Therapy KW - Phosphines -- poisoning UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1424324133?accountid=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=Renal+failure&rft.atitle=Use+of+continuous+renal+replacement+therapy+in+acute+aluminum+phosphide+poisoning%3A+a+novel+therapy.&rft.au=Nasa%2C+Prashant%3BGupta%2C+Ankur%3BMangal%2C+Kishore%3BNagrani%2C+S+K%3BRaina%2C+Sanjay%3BYadav%2C+Rohit&rft.aulast=Nasa&rft.aufirst=Prashant&rft.date=2013-09-01&rft.volume=35&rft.issue=8&rft.spage=1170&rft.isbn=&rft.btitle=&rft.title=Renal+failure&rft.issn=1525-6049&rft_id=info:doi/10.3109%2F0886022X.2013.815565 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2014-04-24 N1 - Date created - 2013-08-14 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-19 DO - http://dx.doi.org/10.3109/0886022X.2013.815565 ER - TY - JOUR T1 - The Sensitivity of Tropical Rainfall Estimation From Satellite to the Configuration of the Microwave Imager Constellation AN - 1412505122; 18219099 AB - The availability of rainfall-related measurements from space has greatly increased from the late 1980s with the Defense Meteorological Satellite Program and the launch of the Tropical Rainfall Measuring Mission in 1997 to the forthcoming Global Precipitation Measurement (GPM) program (GPM mission) whose core satellite is to be launched in 2014. The rainfall observing systems have become a constellation enhancing the frequency of measurements all over the globe. In this letter, the Megha-Tropiques TAPEER-BRAIN level-4 rainfall product is considered to explore what impacts the configuration of a microwave imager constellation has on accumulated rainfall and associated sampling error estimates at one-degree/one-day resolution in the tropics. One of the main findings of this letter is that sun-synchronous satellites providing observations separated of time intervals close to rainfall autocorrelation periods result only in small improvements of TAPEER-BRAIN quantitative precipitation estimations (i.e., rain and error estimations). By comparison, it is shown that the GPM constellation of satellites, particularly with satellites on low-inclination "equatorial" orbits, has a high contribution to the improvements of rain and error estimates. The methodology developed in this letter could be also useful to explore the sensitivity of rainfall estimates at finer space and timescales. JF - IEEE Geoscience and Remote Sensing Letters AU - Chambon, Philippe AU - Roca, Remy AU - Jobard, Isabelle AU - Capderou, Michel AD - Goddard Space Flight Center, Code 612, NASA, Greenbelt, MD , USA Y1 - 2013/09// PY - 2013 DA - September 2013 SP - 996 EP - 1000 PB - Institute of Electrical and Electronics Engineers, Inc., 3 Park Avenue, 17th Fl New York NY 10016-5997 United States VL - 10 IS - 5 SN - 1545-598X, 1545-598X KW - Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Remote Sensing KW - Prediction KW - Meteorological data KW - Rainfall KW - Remote sensing KW - Scientific satellites KW - Meteorological satellite program KW - Precipitation estimation KW - Microwaves KW - Cores KW - Sampling KW - Satellite Technology KW - Global precipitation KW - Precipitation KW - Errors KW - Satellite instrumentation KW - Satellite sensing KW - Tropical environment KW - Tropical Rainfall Measuring Mission (TRMM) KW - Rain KW - Tropical rainfall estimation KW - Q2 09243:Structure, mechanics and thermodynamics KW - SW 5040:Data acquisition KW - AQ 00003:Monitoring and Analysis of Water and Wastes KW - M2 551.578.1:Liquid (551.578.1) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1412505122?accountid=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+Geoscience+and+Remote+Sensing+Letters&rft.atitle=The+Sensitivity+of+Tropical+Rainfall+Estimation+From+Satellite+to+the+Configuration+of+the+Microwave+Imager+Constellation&rft.au=Chambon%2C+Philippe%3BRoca%2C+Remy%3BJobard%2C+Isabelle%3BCapderou%2C+Michel&rft.aulast=Chambon&rft.aufirst=Philippe&rft.date=2013-09-01&rft.volume=10&rft.issue=5&rft.spage=996&rft.isbn=&rft.btitle=&rft.title=IEEE+Geoscience+and+Remote+Sensing+Letters&rft.issn=1545598X&rft_id=info:doi/10.1109%2FLGRS.2012.2227668 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-07-01 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Prediction; Satellite sensing; Microwaves; Tropical environment; Remote sensing; Scientific satellites; Meteorological data; Precipitation estimation; Meteorological satellite program; Global precipitation; Tropical Rainfall Measuring Mission (TRMM); Tropical rainfall estimation; Satellite instrumentation; Remote Sensing; Satellite Technology; Cores; Rainfall; Sampling; Rain; Precipitation; Errors DO - http://dx.doi.org/10.1109/LGRS.2012.2227668 ER - TY - JOUR T1 - Statistical and hydrological evaluation of TRMM-based multi-satellite precipitation analysis over the Wangchu Basin of Bhutan; are the latest satellite precipitation products 3B42V7 ready for use in ungauged basins? AN - 1507181168; 2014-017769 AB - The objective of this study is to quantitatively evaluate the successive Tropical Rainfall Measuring Mission (TRMM) Multi-satellite Precipitation Analysis (TMPA) products and further to explore the improvements and error propagation of the latest 3B42V7 algorithm relative to its predecessor 3B42V6 using the Coupled Routing and Excess Storage (CREST) hydrologic model in the mountainous Wangchu Basin of Bhutan. First, the comparison to a decade-long (2001-2010) daily rain gauge dataset reveals that: (1) 3B42V7 generally improves upon 3B42V6's underestimation both for the whole basin (bias from -41.15% to -8.38%) and for a 0.25 degrees X 0.25 degrees grid cell with high-density gauges (bias from -40.25% to 0.04%), though with modest enhancement of correlation coefficients (CC) (from 0.36 to 0.40 for basin-wide and from 0.37 to 0.41 for grid); and (2) 3B42V7 also improves its occurrence frequency across the rain intensity spectrum. Using the CREST model that has been calibrated with rain gauge inputs, the 3B42V6-based simulation shows limited hydrologic prediction NSCE skill (0.23 in daily scale and 0.25 in monthly scale) while 3B42V7 performs fairly well (0.66 in daily scale and 0.77 in monthly scale), a comparable skill score with the gauge rainfall simulations. After recalibrating the model with the respective TMPA data, significant improvements are observed for 3B42V6 across all categories, but not as much enhancement for the already-well-performing 3B42V7 except for a reduction in bias (from -26.98% to -4.81%). In summary, the latest 3B42V7 algorithm reveals a significant upgrade from 3B42V6 both in precipitation accuracy (i.e., correcting the underestimation) thus improving its potential hydrological utility. Forcing the model with 3B42V7 rainfall yields comparable skill scores with in situ gauges even without recalibration of the hydrological model by the satellite precipitation, a compensating approach often used but not favored by the hydrology community, particularly in ungauged basins. Abstract Copyright (2013) Elsevier, B.V. JF - Journal of Hydrology AU - Xue, Xianwu AU - Hong, Yang AU - Limaye, Ashutosh S AU - Gourley, Jonathan J AU - Huffman, George J AU - Khan, Sadiq Ibrahim AU - Dorji, Chhimi AU - Chen, Sheng Y1 - 2013/08/30/ PY - 2013 DA - 2013 Aug 30 SP - 91 EP - 99 PB - Elsevier, Amsterdam VL - 499 SN - 0022-1694, 0022-1694 KW - gauging KW - rainfall KW - statistical analysis KW - calibration KW - equations KW - Bhutan KW - simulation KW - satellite methods KW - evapotranspiration KW - models KW - Tropical Rainfall Measuring Mission KW - Indian Peninsula KW - Wangchu Basin KW - mathematical methods KW - CREST Program KW - drainage basins KW - coupled routing and excess storage KW - algorithms KW - Asia KW - remote sensing KW - 21:Hydrogeology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1507181168?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Statistical+and+hydrological+evaluation+of+TRMM-based+multi-satellite+precipitation+analysis+over+the+Wangchu+Basin+of+Bhutan%3B+are+the+latest+satellite+precipitation+products+3B42V7+ready+for+use+in+ungauged+basins%3F&rft.au=Xue%2C+Xianwu%3BHong%2C+Yang%3BLimaye%2C+Ashutosh+S%3BGourley%2C+Jonathan+J%3BHuffman%2C+George+J%3BKhan%2C+Sadiq+Ibrahim%3BDorji%2C+Chhimi%3BChen%2C+Sheng&rft.aulast=Xue&rft.aufirst=Xianwu&rft.date=2013-08-30&rft.volume=499&rft.issue=&rft.spage=91&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology&rft.issn=00221694&rft_id=info:doi/10.1016%2Fj.jhydrol.2013.06.042 L2 - http://www.sciencedirect.com/science/journal/00221694 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2014-01-01 N1 - Number of references - 37 N1 - Document feature - illus. incl. 5 tables, sketch map N1 - Last updated - 2014-05-15 N1 - CODEN - JHYDA7 N1 - SubjectsTermNotLitGenreText - algorithms; Asia; Bhutan; calibration; coupled routing and excess storage; CREST Program; drainage basins; equations; evapotranspiration; gauging; Indian Peninsula; mathematical methods; models; rainfall; remote sensing; satellite methods; simulation; statistical analysis; Tropical Rainfall Measuring Mission; Wangchu Basin DO - http://dx.doi.org/10.1016/j.jhydrol.2013.06.042 ER - TY - CPAPER T1 - Numerical study of transmission loss through a slow gas layer adjacent to a plate T2 - 2013 National Conference on Noise Control Engineering (NOISE-CON 2013) AN - 1490515122; 6256484 JF - 2013 National Conference on Noise Control Engineering (NOISE-CON 2013) AU - Schiller, Noah AU - Beck, Benjamin AU - Slagle, Adam Y1 - 2013/08/26/ PY - 2013 DA - 2013 Aug 26 KW - Transmission loss UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1490515122?accountid=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=2013+National+Conference+on+Noise+Control+Engineering+%28NOISE-CON+2013%29&rft.atitle=Numerical+study+of+transmission+loss+through+a+slow+gas+layer+adjacent+to+a+plate&rft.au=Schiller%2C+Noah%3BBeck%2C+Benjamin%3BSlagle%2C+Adam&rft.aulast=Schiller&rft.aufirst=Noah&rft.date=2013-08-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2013+National+Conference+on+Noise+Control+Engineering+%28NOISE-CON+2013%29&rft.issn=&rft_id=info:doi/ L2 - http://www.inceusa.org/nc13/links/NOISE-CON_2013_Technical_Program.pdf LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-11-30 N1 - Last updated - 2014-02-10 ER - TY - CPAPER T1 - Application of a broadband active vibration control system to a helicopter trim panel T2 - 2013 National Conference on Noise Control Engineering (NOISE-CON 2013) AN - 1490511694; 6256477 JF - 2013 National Conference on Noise Control Engineering (NOISE-CON 2013) AU - Cabell, Randolph AU - Schiller, Noah AU - Simon, Frank Y1 - 2013/08/26/ PY - 2013 DA - 2013 Aug 26 KW - Vibration UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1490511694?accountid=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=2013+National+Conference+on+Noise+Control+Engineering+%28NOISE-CON+2013%29&rft.atitle=Application+of+a+broadband+active+vibration+control+system+to+a+helicopter+trim+panel&rft.au=Cabell%2C+Randolph%3BSchiller%2C+Noah%3BSimon%2C+Frank&rft.aulast=Cabell&rft.aufirst=Randolph&rft.date=2013-08-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2013+National+Conference+on+Noise+Control+Engineering+%28NOISE-CON+2013%29&rft.issn=&rft_id=info:doi/ L2 - http://www.inceusa.org/nc13/links/NOISE-CON_2013_Technical_Program.pdf LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-11-30 N1 - Last updated - 2014-02-10 ER - TY - CPAPER T1 - Auralization architectures for NASA's next generation aircraft noise prediction program T2 - 2013 National Conference on Noise Control Engineering (NOISE-CON 2013) AN - 1490510501; 6256522 JF - 2013 National Conference on Noise Control Engineering (NOISE-CON 2013) AU - Rizzi, Stephen AU - Lopes, Leonard AU - Burley, Casey AU - Aumann, Aric Y1 - 2013/08/26/ PY - 2013 DA - 2013 Aug 26 KW - Prediction UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1490510501?accountid=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=2013+National+Conference+on+Noise+Control+Engineering+%28NOISE-CON+2013%29&rft.atitle=Auralization+architectures+for+NASA%27s+next+generation+aircraft+noise+prediction+program&rft.au=Rizzi%2C+Stephen%3BLopes%2C+Leonard%3BBurley%2C+Casey%3BAumann%2C+Aric&rft.aulast=Rizzi&rft.aufirst=Stephen&rft.date=2013-08-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2013+National+Conference+on+Noise+Control+Engineering+%28NOISE-CON+2013%29&rft.issn=&rft_id=info:doi/ L2 - http://www.inceusa.org/nc13/links/NOISE-CON_2013_Technical_Program.pdf LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-11-30 N1 - Last updated - 2014-02-10 ER - TY - JOUR T1 - Error budget for a calibration demonstration system for the reflected solar instrument for the climate absolute radiance and refractivity observatory AN - 1785243626; PQ0002878105 AB - A goal of the Climate Absolute Radiance and Refractivity Observatory (CLARREO) mission is to observe highaccuracy, long-term climate change trends over decadal time scales. The key to such a goal is to improving the accuracy of SI traceable absolute calibration across infrared and reflected solar wavelengths allowing climate change to be separated from the limit of natural variability. The advances required to reach on-orbit absolute accuracy to allow climate change observations to survive data gaps exist at NIST in the laboratory, but still need demonstration that the advances can move successfully from to NASA and/or instrument vendor capabilities for spaceborne instruments. The current work describes the radiometric calibration error budget for the Solar, Lunar for Absolute Reflectance Imaging Spectroradiometer (SOLARIS) which is the calibration demonstration system (CDS) for the reflected solar portion of CLARREO. The goal of the CDS is to allow the testing and evaluation of calibration approaches, alternate design and/or implementation approaches and components for the CLARREO mission. SOLARIS also provides a test-bed for detector technologies, non-linearity determination and uncertainties, and application of future technology developments and suggested spacecraft instrument design modifications. The resulting SI-traceable error budget for reflectance retrieval using solar irradiance as a reference and methods for laboratory-based, absolute calibration suitable for climatequality data collections is given. Key components in the error budget are geometry differences between the solar and earth views, knowledge of attenuator behavior when viewing the sun, and sensor behavior such as detector linearity and noise behavior. Methods for demonstrating this error budget are also presented. JF - Proceedings of SPIE - The International Society for Optical Engineering AU - Thome, Kurtis AU - McCorkel, Joel AU - McAndrew, Brendan AD - NASA Goddard Space Flight Ctr. (United States) Y1 - 2013/08/25/ PY - 2013 DA - 2013 Aug 25 PB - SPIE, P.O. BOX 10 Bellingham WA 98227-0010 United States VL - 8870 SN - 0277-786X, 0277-786X KW - Sustainability Science Abstracts; Meteorological & Geoastrophysical Abstracts KW - Calibration KW - Equipment and services KW - Observatories KW - Climate change KW - Sensors KW - Reflectivity KW - Attenuators KW - Orbital dynamics KW - Data collection KW - Reflectance KW - Solar observatories KW - Acoustic waves KW - Natural variability KW - Spacecraft KW - Solar irradiance KW - Sun KW - Noise pollution KW - Technology KW - M2 523.3:Earth-Moon System (523.3) KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1785243626?accountid=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=Proceedings+of+SPIE+-+The+International+Society+for+Optical+Engineering&rft.atitle=Error+budget+for+a+calibration+demonstration+system+for+the+reflected+solar+instrument+for+the+climate+absolute+radiance+and+refractivity+observatory&rft.au=Thome%2C+Kurtis%3BMcCorkel%2C+Joel%3BMcAndrew%2C+Brendan&rft.aulast=Thome&rft.aufirst=Kurtis&rft.date=2013-08-25&rft.volume=8870&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Proceedings+of+SPIE+-+The+International+Society+for+Optical+Engineering&rft.issn=0277786X&rft_id=info:doi/10.1117%2F12.2024562 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-04-01 N1 - Last updated - 2016-08-03 N1 - SubjectsTermNotLitGenreText - Solar observatories; Reflectance; Acoustic waves; Climate change; Natural variability; Noise pollution; Solar irradiance; Data collection; Sensors; Sun; Spacecraft; Technology DO - http://dx.doi.org/10.1117/12.2024562 ER - TY - JOUR T1 - Ketene formation in interstellar ices; a laboratory study AN - 1739085290; 2015-116265 AB - The formation of ketene (H (sub 2) CCO, ethenone) in polar and apolar ices was studied with in situ 0.8 MeV proton irradiation, far-UV photolysis, and infrared spectroscopic analyses at 10-20 K. Using isotopically enriched reagents, unequivocal evidence was obtained for ketene synthesis in H (sub 2) O-rich and CO (sub 2) -rich ices, and several reaction products were identified. Results from scavenging experiments suggested that ketene was formed by free-radical pathways, as opposed to acid-base processes or redox reactions. Finally, we use our results to draw conclusions about the formation and stability of ketene in the interstellar medium. Copyright (Copyright) 2013. The American Astronomical Society. All rights reserved. JF - The Astrophysical Journal AU - Hudson, Reggie L AU - Loeffler, Mark J Y1 - 2013/08/20/ PY - 2013 DA - 2013 Aug 20 EP - Paper no. 109 PB - IOP Publishing for American Astronomical Society, Bristol VL - 773 IS - 2 SN - 0004-637X, 0004-637X KW - irradiation KW - aliphatic hydrocarbons KW - ethane KW - interplanetary space KW - temperature KW - infrared spectra KW - carbon dioxide KW - laboratory studies KW - chemical reactions KW - electromagnetic radiation KW - ketene KW - ice KW - spectra KW - water KW - experimental studies KW - photochemistry KW - interstellar medium KW - cosmochemistry KW - alkanes KW - ultraviolet radiation KW - carbon monoxide KW - organic compounds KW - stars KW - photolysis KW - low temperature KW - hydrocarbons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1739085290?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+Astrophysical+Journal&rft.atitle=Ketene+formation+in+interstellar+ices%3B+a+laboratory+study&rft.au=Hudson%2C+Reggie+L%3BLoeffler%2C+Mark+J&rft.aulast=Hudson&rft.aufirst=Reggie&rft.date=2013-08-20&rft.volume=773&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%2F773%2F2%2F109 L2 - http://iopscience.iop.org/0004-637X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by IOP Publishing Ltd., London, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 72 N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2015-12-04 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; carbon dioxide; carbon monoxide; chemical reactions; cosmochemistry; electromagnetic radiation; ethane; experimental studies; hydrocarbons; ice; infrared spectra; interplanetary space; interstellar medium; irradiation; ketene; laboratory studies; low temperature; organic compounds; photochemistry; photolysis; spectra; stars; temperature; ultraviolet radiation; water DO - http://dx.doi.org/10.1088/0004-637X/773/2/109 ER - TY - JOUR T1 - Impact thermochronology and the age of Haughton impact structure, Canada AN - 1464886070; 2013-095400 AB - Most successful efforts to determine the ages of impact events are based on the isotope geochronology of crystalline or glassy impact melts. Studies of impact sites on Earth show that many form without significant melt production, meaning that traditional geochronologic approaches can yield unsatisfying results. We describe here an alternative approach based on theoretical calculations that even brief thermal events related to impact can reset the isotopic systematics of unmelted target rocks. Thermochronometers based on the production of radiogenic (super 4) He in accessory minerals are particularly amenable to complete resetting by impact and should yield robust impact ages if helium systematics are not further disturbed during post-impact thermal events. We illustrate the utility of this method through a presentation of a new zircon (U-Th)/He date for the Haughton impact structure, Canada, of 23.5 + or - 2.0 Ma. Abstract Copyright (2013), . American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Young, Kelsey E AU - Soest, Matthijs C AU - Hodges, Kip V AU - Watson, E Bruce AU - Adams, Byron A AU - Lee, Pascal Y1 - 2013/08/16/ PY - 2013 DA - 2013 Aug 16 SP - 3836 EP - 3840 PB - American Geophysical Union, Washington, DC VL - 40 IS - 15 SN - 0094-8276, 0094-8276 KW - relative age KW - geologic thermometry KW - impact features KW - Eocene KW - thermal properties KW - bolides KW - Paleogene KW - temperature KW - meteors KW - Cenozoic KW - Tertiary KW - geochronology KW - Canada KW - dates KW - upper Eocene KW - Nunavut KW - surface features KW - thermochronology KW - Haughton impact structure KW - geomorphology KW - 23:Geomorphology KW - 03:Geochronology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1464886070?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Impact+thermochronology+and+the+age+of+Haughton+impact+structure%2C+Canada&rft.au=Young%2C+Kelsey+E%3BSoest%2C+Matthijs+C%3BHodges%2C+Kip+V%3BWatson%2C+E+Bruce%3BAdams%2C+Byron+A%3BLee%2C+Pascal&rft.aulast=Young&rft.aufirst=Kelsey&rft.date=2013-08-16&rft.volume=40&rft.issue=15&rft.spage=3836&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2Fgrl.50745 L2 - http://www.agu.org/journals/gl/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2013-01-01 N1 - Number of references - 34 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2013-12-05 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - bolides; Canada; Cenozoic; dates; Eocene; geochronology; geologic thermometry; geomorphology; Haughton impact structure; impact features; meteors; Nunavut; Paleogene; relative age; surface features; temperature; Tertiary; thermal properties; thermochronology; upper Eocene DO - http://dx.doi.org/10.1002/grl.50745 ER - TY - JOUR T1 - ATMOSPHERE ASSESSMENT FOR MARS SCIENCE LABORATORY ENTRY, DESCENT AND LANDING OPERATIONS AN - 1560120881; 20460788 AB - On August 6, 2012, the Mars Science Laboratory rover, Curiosity, successfully landed on the surface of Mars. The Entry, Descent and Landing (EDL) sequence was designed using atmospheric conditions estimated from mesoscale numerical models. The models, developed by two independent organizations (Oregon State University and the Southwest Research Institute), were validated against observations at Mars from three prior years. In the weeks and days before entry, the MSL "Council of Atmospheres" (CoA), a group of atmospheric scientists and modelers, instrument experts and EDL simulation engineers, evaluated the latest Mars data from orbiting assets including the Mars Reconnaissance Orbiter's Mars Color Imager (MARCI) and Mars Climate Sounder (MCS), as well as Mars Odyssey's Thermal Emission Imaging System (THEMIS). The observations were compared to the mesoscale models developed for EDL performance simulation to determine if a spacecraft parameter update was necessary prior to entry. This paper summarizes the daily atmosphere observations and comparison to the performance simulation atmosphere models. Options to modify the atmosphere model in the simulation to compensate for atmosphere effects are also presented. Finally, a summary of the CoA decisions and recommendations to the MSL project in the days leading up to EDL is provided. JF - Advances in the Astronautical Sciences AU - Cianciolo, Alicia D AU - Cantor, Bruce AU - Barnes, Jeff AU - Tyler, Daniel Jr AU - Rafkin, Scot AU - Chen, Allen AU - Kass, David AU - Mischna, Michael AU - Vasavada, Ashwin R AD - Atmospheric Flight and Entry Systems Branch, NASA LaRC, MS 489 Hampton VA 23681 Y1 - 2013/08/15/ PY - 2013 DA - 2013 Aug 15 SP - 2525 EP - 2536 PB - Univelt, Inc. VL - 150 SN - 0065-3438, 0065-3438 KW - Pollution Abstracts; Meteorological & Geoastrophysical Abstracts KW - Mathematical models KW - Climate models KW - Atmospheric pollution models KW - Simulation KW - Spacecraft KW - Atmosphere KW - Councils KW - Numerical models KW - Numerical simulations KW - Emissions KW - Mesoscale models KW - Mesoscale convective systems KW - Mars climate KW - USA, Oregon 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/1560120881?accountid=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=Advances+in+the+Astronautical+Sciences&rft.atitle=ATMOSPHERE+ASSESSMENT+FOR+MARS+SCIENCE+LABORATORY+ENTRY%2C+DESCENT+AND+LANDING+OPERATIONS&rft.au=Cianciolo%2C+Alicia+D%3BCantor%2C+Bruce%3BBarnes%2C+Jeff%3BTyler%2C+Daniel+Jr%3BRafkin%2C+Scot%3BChen%2C+Allen%3BKass%2C+David%3BMischna%2C+Michael%3BVasavada%2C+Ashwin+R&rft.aulast=Cianciolo&rft.aufirst=Alicia&rft.date=2013-08-15&rft.volume=150&rft.issue=&rft.spage=2525&rft.isbn=&rft.btitle=&rft.title=Advances+in+the+Astronautical+Sciences&rft.issn=00653438&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-09-01 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Numerical models; Atmospheric pollution models; Climate models; Numerical simulations; Mesoscale convective systems; Mesoscale models; Mars climate; Mathematical models; Emissions; Simulation; Spacecraft; Councils; Atmosphere; USA, Oregon ER - TY - NEWS T1 - Mystery of the Missing Waves on Titan AN - 1417499201 JF - UPI Space Daily AU - Dr. Tony Phillips for NASA Science News Y1 - 2013/08/05/ PY - 2013 DA - 2013 Aug 05 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1417499201?accountid=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=Mystery+of+the+Missing+Waves+on+Titan&rft.au=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2013-08-05&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 - 2013-08-05 ER - TY - RPRT T1 - PROPOSED DEMOLITION AND ENVIRONMENTAL CLEANUP ACTIVITIES AT SANTA SUSANA FIELD LABORATORY, VENTURA COUNTY, CALIFORNIA. AN - 16372939; 15828 AB - PURPOSE: Demolition activity and remediation of groundwater and soil on the property administered by the National Aeronautics and Space Administration (NASA) at Santa Susana Field Laboratory (SSFL) in southeastern Ventura County, California are proposed. NASA administers 451.2 acres at the site while the Boeing Company owns the remainder of the 2,850 acres of SSFL property. Since 1948, site activities at SSFL included research, development, and testing of liquid-fueled rocket engines and components. From the 1950s through the early 1970s Rocketdyne (one predecessor to Boeing) conducted operations in Areas I and III in support of various government space programs and in Area II on behalf of the U.S. Air Force (USAF), and then of NASA. NASA gradually discontinued test activities in the 1980s and conducted its final tests in 2006. Area II was deeded to the USAF in 1958 and to NASA in 1973. The liquid oxygen plant in Area I was transferred to NASA in 1976. NASA reported its Santa Susana property as excess to its mission needs in September 2009. Historical use of test stands and other operations at SSFL resulted in environmental contamination and sampling indicates that metals, dioxins, polychlorinated biphenyls, volatile organics, and semivolatile organics are present in the soils and upper groundwater. Volatile organics, metals, and semivolatile organics are also present in the deeper groundwater. The proposed action would implement one demolition alternative and one or more cleanup technologies. Soil cleanup technologies under consideration include: excavation and offsite disposal, soil washing, soil vapor extraction, ex situ treatment using land farming, ex situ treatment using oxidation, in situ chemical oxidation, and in situ anaerobic or aerobic biological treatment. Groundwater treatment technologies could include: pump and treat, vacuum extraction, heat driven extraction, in situ chemical oxidation, in situ enhanced bioremediation, and monitored natural attenuation. In addition to the proposed action, this draft EIS considers a No Action Alternative which would continue current activities. NASA would not demolish test stands or ancillary structures on the NASA-administered property of SSFL, and would not conduct monitoring of test stands. NASA would not conduct soil remediation at the site or groundwater treatment beyond the groundwater extraction and treatment system and interim source removal action activities currently underway. Ongoing groundwater and surface water sampling on the site would continue. Contaminants not captured by the current removal programs would remain in place or attenuate naturally over time. POSITIVE IMPACTS: The proposed action would remediate the environment to a level that meets NASAs cleanup responsibilities. Demolition would support both remediation and property disposition of the NASA-administered portion of SSFL. NEGATIVE IMPACTS: Implementation would result in the excavation of non-treatable soils to a depth of two feet (and in some places to 20 feet deep) from approximately 105 acres. There is the potential for the 105 acres to increase in size as NASA completes its soil sampling work in 2013. Excavation of 320,000 cubic yards of contaminated soil would result in erosion impacts and could increase landslide potential. The elimination of all existing biological resources within the contaminated areas, including 32 acres of sensitive habitats, would change soil profiles. The proposed action would impact historic architectural resources, the Burro Flats Painted Cave archeological site, and potentially a second archeological site. In addition, SSFL has been formally identified by the Santa Ynez Band of Chumash Indians as an Indian sacred site. Heavy-duty truck traffic could impact local roads. LEGAL MANDATES: Federal Water Pollution Control Act of 1972 (33 U.S.C. 1251 et seq.) and National Historic Preservation Act of 1966 (16 U.S.C. 470 et seq.). JF - EPA number: 130227, 368 pages, August 2, 2013 PY - 2013 KW - Research and Development KW - Air Quality Assessments KW - Archaeological Sites KW - Biologic Surveys KW - Chemicals KW - Demolition KW - Disposal KW - Hazardous Wastes KW - Historic Districts KW - Historic Sites KW - Research Facilities KW - Section 106 Statements KW - Soils KW - Vegetation KW - Water Quality KW - California KW - Federal Water Pollution Control Act of 1972, Section 404 Permits KW - National Historic Preservation Act of 1966, Compliance UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16372939?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/Environmental+Impact+Statements%3A+Digests&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=report&rft.jtitle=&rft.atitle=&rft.au=&rft.aulast=&rft.aufirst=&rft.date=2013-08-02&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=PROPOSED+DEMOLITION+AND+ENVIRONMENTAL+CLEANUP+ACTIVITIES+AT+SANTA+SUSANA+FIELD+LABORATORY%2C+VENTURA+COUNTY%2C+CALIFORNIA.&rft.title=PROPOSED+DEMOLITION+AND+ENVIRONMENTAL+CLEANUP+ACTIVITIES+AT+SANTA+SUSANA+FIELD+LABORATORY%2C+VENTURA+COUNTY%2C+CALIFORNIA.&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Name - National Aeronautics and Space Administration, Huntsville, Alabama; NASA N1 - Date revised - 2013-11-01 N1 - SuppNotes - Draft. Preparation date: August 2, 2013 N1 - Last updated - 2013-11-13 ER - TY - JOUR T1 - THE COSMIC INFRARED BACKGROUND EXPERIMENT (CIBER): THE WIDE-FIELD IMAGERS AN - 1668249692; PQ0001269682 AB - We have developed and characterized an imaging instrument to measure the spatial properties of the diffuse near-infrared extragalactic background light (EBL) in a search for fluctuations from z > 6 galaxies during the epoch of reionization. The instrument is part of the Cosmic Infrared Background Experiment (CIBER), designed to observe the EBL above Earth's atmosphere during a suborbital sounding rocket flight. The imaging instrument incorporates a 2[degrees] x 2[degrees] field of view to measure fluctuations over the predicted peak of the spatial power spectrum at 10 arcmin, and 7" x 7" pixels, to remove lower redshift galaxies to a depth sufficient to reduce the low-redshift galaxy clustering foreground below instrumental sensitivity. The imaging instrument employs two cameras with Delta [lambda]/[lambda] ~ 0.5 bandpasses centered at 1.1 mu m and 1.6 mu m to spectrally discriminate reionization extragalactic background fluctuations from local foreground fluctuations. CIBER operates at wavelengths where the electromagnetic spectrum of the reionization extragalactic background is thought to peak, and complements fluctuation measurements by AKARI and Spitzer at longer wavelengths. We have characterized the instrument in the laboratory, including measurements of the sensitivity, flat-field response, stray light performance, and noise properties. Several modifications were made to the instrument following a first flight in 2009 February. The instrument performed to specifications in three subsequent flights, and the scientific data are now being analyzed. JF - Astrophysical Journal Supplement AU - Bock, J AU - Sullivan, I AU - Arai, T AU - Battle, J AU - Cooray, A AU - Hristov, V AU - Keating, B AU - Kim, M G AU - Lam, A C AU - Lee, D H AD - Jet Propulsion Laboratory (JPL), National Aeronautics and Space Administration (NASA), Pasadena, CA 91109, USA; Department of Physics, Mathematics and Astronomy, California Institute of Technology, Pasadena, CA 91125, USA Y1 - 2013/08// PY - 2013 DA - Aug 2013 SP - 1 EP - 14 PB - IOP Publishing, P.O. Box 37005 Chicago IL 60637 United States VL - 207 IS - 2 SN - 0067-0049, 0067-0049 KW - Pollution Abstracts; Meteorological & Geoastrophysical Abstracts KW - dark ages reionization first stars KW - diffuse radiation KW - infrared: diffuse background KW - instrumentation: miscellaneous KW - space vehicles: instruments KW - Sensitivity KW - Earth's atmosphere KW - Galactic clusters KW - Acoustic waves KW - Noise levels KW - Galaxies KW - Noise pollution KW - Atmosphere KW - P 7000:NOISE KW - M2 524:Stars, Universe (524) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668249692?accountid=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+Supplement&rft.atitle=THE+COSMIC+INFRARED+BACKGROUND+EXPERIMENT+%28CIBER%29%3A+THE+WIDE-FIELD+IMAGERS&rft.au=Bock%2C+J%3BSullivan%2C+I%3BArai%2C+T%3BBattle%2C+J%3BCooray%2C+A%3BHristov%2C+V%3BKeating%2C+B%3BKim%2C+M+G%3BLam%2C+A+C%3BLee%2C+D+H&rft.aulast=Bock&rft.aufirst=J&rft.date=2013-08-01&rft.volume=207&rft.issue=2&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Astrophysical+Journal+Supplement&rft.issn=00670049&rft_id=info:doi/10.1088%2F0067-0049%2F207%2F2%2F32 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-03-01 N1 - Last updated - 2015-11-16 N1 - SubjectsTermNotLitGenreText - Earth's atmosphere; Galactic clusters; Acoustic waves; Galaxies; Noise pollution; Sensitivity; Noise levels; Atmosphere DO - http://dx.doi.org/10.1088/0067-0049/207/2/32 ER - TY - JOUR T1 - Science potential from a Europa lander AN - 1618132268; 2014-086250 JF - Astrobiology AU - Pappalardo, Robert T AU - Vance, S AU - Bagenal, F AU - Bills, B G AU - Blaney, D L AU - Blankenship, D D AU - Brinckerhoff, W B AU - Connerey, J E P AU - Hand, K P AU - Hoehler, T M AU - Leisner, J S AU - Kurth, W S AU - McGrath, M A AU - Mellon, M T AU - Moore, J M AU - Patterson, G W AU - Prockter, L M AU - Senske, D A AU - Schmidt, B E AU - Shock, E L AU - Smith, D E AU - Soderlund, K M Y1 - 2013/08// PY - 2013 DA - August 2013 SP - 740 EP - 773 PB - Mary Ann Liebert, Larchmont, NY VL - 13 IS - 8 SN - 1531-1074, 1531-1074 KW - icy satellites KW - Europa Satellite KW - government agencies KW - landing sites KW - Galilean satellites KW - topography KW - sedimentary rocks KW - ice KW - surface features KW - payloads KW - satellites KW - water KW - chemically precipitated rocks KW - in situ KW - lander missions KW - evaporites KW - concepts KW - objectives KW - habitability KW - planning KW - NASA KW - reflectance KW - instruments KW - salt KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1618132268?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Astrobiology&rft.atitle=Science+potential+from+a+Europa+lander&rft.au=Pappalardo%2C+Robert+T%3BVance%2C+S%3BBagenal%2C+F%3BBills%2C+B+G%3BBlaney%2C+D+L%3BBlankenship%2C+D+D%3BBrinckerhoff%2C+W+B%3BConnerey%2C+J+E+P%3BHand%2C+K+P%3BHoehler%2C+T+M%3BLeisner%2C+J+S%3BKurth%2C+W+S%3BMcGrath%2C+M+A%3BMellon%2C+M+T%3BMoore%2C+J+M%3BPatterson%2C+G+W%3BProckter%2C+L+M%3BSenske%2C+D+A%3BSchmidt%2C+B+E%3BShock%2C+E+L%3BSmith%2C+D+E%3BSoderlund%2C+K+M&rft.aulast=Pappalardo&rft.aufirst=Robert&rft.date=2013-08-01&rft.volume=13&rft.issue=8&rft.spage=740&rft.isbn=&rft.btitle=&rft.title=Astrobiology&rft.issn=15311074&rft_id=info:doi/10.1089%2Fast.2013.1003 L2 - http://www.liebertpub.com/publication.aspx?pub_id=99 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 199 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2014-10-30 N1 - SubjectsTermNotLitGenreText - chemically precipitated rocks; concepts; Europa Satellite; evaporites; Galilean satellites; government agencies; habitability; ice; icy satellites; in situ; instruments; lander missions; landing sites; NASA; objectives; payloads; planning; reflectance; salt; satellites; sedimentary rocks; surface features; topography; water DO - http://dx.doi.org/10.1089/ast.2013.1003 ER - TY - JOUR T1 - Appropriate protection of Mars AN - 1507181958; 2014-018436 JF - Nature Geoscience AU - Conley, Catharine A AU - Rummel, John D Y1 - 2013/08// PY - 2013 DA - August 2013 SP - 587 EP - 588 PB - Nature Publishing Group, London VL - 6 IS - 8 SN - 1752-0894, 1752-0894 KW - protection KW - Earth KW - stony meteorites KW - Martian meteorites KW - astrobiology KW - Mars KW - research KW - achondrites KW - life origin KW - exploration KW - terrestrial planets KW - planets KW - meteorites KW - contamination KW - microorganisms KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1507181958?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Appropriate+protection+of+Mars&rft.au=Conley%2C+Catharine+A%3BRummel%2C+John+D&rft.aulast=Conley&rft.aufirst=Catharine&rft.date=2013-08-01&rft.volume=6&rft.issue=8&rft.spage=587&rft.isbn=&rft.btitle=&rft.title=Nature+Geoscience&rft.issn=17520894&rft_id=info:doi/10.1038%2Fngeo1908 L2 - http://www.nature.com/ngeo/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 11 N1 - Document feature - illus. N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - achondrites; astrobiology; contamination; Earth; exploration; life origin; Mars; Martian meteorites; meteorites; microorganisms; planets; protection; research; stony meteorites; terrestrial planets DO - http://dx.doi.org/10.1038/ngeo1908 ER - TY - JOUR T1 - Time scales of erosion and deposition recorded in the residual south polar cap of Mars AN - 1442374698; 2013-081641 AB - The residual south polar cap (RSPC) of Mars has been subject to competing processes during recent Mars years of high resolution image coverage: continuing erosion of scarps while the maximum extent grows as well as shrinks (Piqueux, S., Christensen, P.R. [2008]. J. Geophys. Res. (Planets) 113, 2006; James, P.B., Thomas, P.C., Malin, M.C. [2010]. Icarus 208, 82-85). Additionally, the cap has a variety of morphologies and erosion (scarp retreat) rates (Thomas, P.C., James, P.B., Calvin, W.M., Haberle, R., Malin, M.C. [2009]. Icarus 203, 352-375). Do these different forms and competing processes indicate an aging and possibly disappearing cap, a growing cap, or a fluctuating cap, and is it possible to infer the timescales of the processes acting on the RSPC? Here we use the latest imaging data from Mars' southern summer in Mars year 30 (Calendar year 2011) to evaluate erosion rates of forms in the RSPC over 6 Mars years, and to map more fully features whose sizes can be used to predict deposit ages. Data through Mars year 30 show that scarp retreat rates in the RSPC have remained approximately the same for at least 6 Mars years and that these rates of erosion also apply approximately over the past 21 Mars years. The thicker units appear to have undergone changes in the locations of new pit formation about 30-50 Mars years ago. The thinner units have some areas that are possibly 80 Mars years old, with some younger materials having accumulated more than a meter in thickness since Mars year 9. Formation of the thicker units probably required over 100 Mars years. The upper surfaces of most areas, especially the thicker units, show little change at the few-cm level over the last 2 Mars years. This observation suggests that current conditions are substantially different from those when the thicker units were deposited. A prime characteristic of the evolution of the RSPC is that some changes are progressive, such as those involving scarp retreat, while others, such as the geography of initiation of new pits or the areal coverage of ice, appear to be more episodic. JF - Icarus AU - Thomas, P C AU - Calvin, W M AU - Gierasch, P AU - Haberle, R AU - James, P B AU - Sholes, S Y1 - 2013/08// PY - 2013 DA - August 2013 SP - 923 EP - 932 PB - Elsevier, New York, NY VL - 225 IS - 2 SN - 0019-1035, 0019-1035 KW - Mars Observer Camera KW - imagery KW - erosion KW - pits KW - Mars Reconnaissance Orbiter KW - Mars KW - erosion rates KW - polar caps KW - carbon dioxide KW - terrestrial planets KW - planets KW - High Resolution Imager and Science Experiment KW - size distribution KW - topography KW - deposition KW - ice KW - HiRISE KW - temporal distribution KW - scarps KW - geomorphology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442374698?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Time+scales+of+erosion+and+deposition+recorded+in+the+residual+south+polar+cap+of+Mars&rft.au=Thomas%2C+P+C%3BCalvin%2C+W+M%3BGierasch%2C+P%3BHaberle%2C+R%3BJames%2C+P+B%3BSholes%2C+S&rft.aulast=Thomas&rft.aufirst=P&rft.date=2013-08-01&rft.volume=225&rft.issue=2&rft.spage=923&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2012.08.038 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Conference title - Fifth international conference on Mars polar science and exploration N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 24 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables, sketch maps N1 - Last updated - 2013-10-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - carbon dioxide; deposition; erosion; erosion rates; geomorphology; High Resolution Imager and Science Experiment; HiRISE; ice; imagery; Mars; Mars Observer Camera; Mars Reconnaissance Orbiter; pits; planets; polar caps; scarps; size distribution; temporal distribution; terrestrial planets; topography DO - http://dx.doi.org/10.1016/j.icarus.2012.08.038 ER - TY - JOUR T1 - Sea ice thickness retrieval algorithms based on in situ surface elevation and thickness values for application to altimetry AN - 1442373174; 2013-082135 AB - In situ measurements of sea ice thickness (I), snow depth (S), and snow freeboard (F (sub sn) ) from drilling profile lines from 15 cruises into the Southern Ocean, Antarctica, were analyzed. I was calculated from in situ F (sub sn) and S using an isostatic approach. I was also directly estimated from F (sub sn) as can be obtained from laser altimetry. The root-mean-square difference (RMSD) between observed and calculated I reduces, and the correlation between F (sub sn) and I increases substantially, when (1) using values averaged over the survey lines ( approximately 50 m) instead of single drill hole measurements ( approximately 1 m) and (2) treating positive and negative sea ice freeboard (F (sub i) ) separately. For small F (sub i) , however, S approximates F (sub sn) pointing toward an isostatic balance also between S and I. Our linear regression analysis between the in situ measurements suggests a direct conversion of F (sub sn) into I using a region-specific set of equations. RMSD values are similar to those obtained employing isostatic balance models and treating positive and negative F (sub i) separately. However, more data would have been needed to obtain significant differences between most of the various models suggested. Still our new approach gives a viable alternative for Antarctic I retrieval from altimetric measurements of F (sub sn) alone. Correlation between in situ observations of F (sub sn) and S is high. RMSD between observed and calculated S is small. This suggests estimation of S from altimetric F (sub sn) measurements. Such S has an estimated precision of approximately 5 cm, and is neither affected by snow wetness or grain size nor limited to S < 50 cm. Abstract Copyright (2013), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Oceans AU - Ozsoy-Cicek, Burcu AU - Ackley, Stephen AU - Xie, Hongjie AU - Yi, Donghui AU - Zwally, Jay Y1 - 2013/08// PY - 2013 DA - August 2013 SP - 3807 EP - 3822 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 8 SN - 2169-9275, 2169-9275 KW - Southern Ocean KW - in situ KW - sea ice KW - elevation KW - statistical analysis KW - altimetry KW - satellite methods KW - depth KW - correlation coefficient KW - ice KW - snow KW - thickness KW - algorithms KW - regression analysis KW - remote sensing KW - 07:Oceanography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442373174?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Sea+ice+thickness+retrieval+algorithms+based+on+in+situ+surface+elevation+and+thickness+values+for+application+to+altimetry&rft.au=Ozsoy-Cicek%2C+Burcu%3BAckley%2C+Stephen%3BXie%2C+Hongjie%3BYi%2C+Donghui%3BZwally%2C+Jay&rft.aulast=Ozsoy-Cicek&rft.aufirst=Burcu&rft.date=2013-08-01&rft.volume=118&rft.issue=8&rft.spage=3807&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Oceans&rft.issn=21699275&rft_id=info:doi/10.1002%2Fjgrc.20252 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 - 2013-01-01 N1 - Number of references - 53 N1 - PubXState - DC N1 - Document feature - illus. incl. 7 tables, sketch map N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - algorithms; altimetry; correlation coefficient; depth; elevation; ice; in situ; regression analysis; remote sensing; satellite methods; sea ice; snow; Southern Ocean; statistical analysis; thickness DO - http://dx.doi.org/10.1002/jgrc.20252 ER - TY - JOUR T1 - Evaluating Low-Cloud Simulation from an Upgraded Multiscale Modeling Framework Model. Part I: Sensitivity to Spatial Resolution and Climatology AN - 1434019819; 18450339 AB - The multiscale modeling framework, which replaces traditional cloud parameterizations with a 2D cloud-resolving model (CRM) in each atmospheric column, is a promising approach to climate modeling. The CRM component contains an advanced third-order turbulence closure, helping it to better simulate low-level clouds. In this study, two simulations are performed with 1.9 degree 2.5 degree grid spacing but they differ in the vertical resolution. The number of model layers below 700 hPa increases from 6 in one simulation (IP-6L) to 12 in another (IP-12L) to better resolve the boundary layer. The low-cloud horizontal distribution and vertical structures in IP-12L are more realistic and its global mean is higher than in IP-6L and closer to that of CloudSat/Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) observations. The spatial patterns of tropical precipitation are significantly improved; for example, a single intertropical convergence zone (ITCZ) in the Pacific, instead of double ITCZs in an earlier study that used coarser horizontal resolution and a different dynamical core in its host general circulation model (GCM), and the intensity of the South Pacific convergence zone (SPCZ), and the ITCZ in the Atlantic is more realistic. Many aspects of the global seasonal climatology agree well with observations except for excessive precipitation in the tropics. In terms of spatial correlations and patterns in the tropical/subtropical regions, most surface/vertically integrated properties show greater improvement over the earlier simulation than that with lower vertical resolution. The relationships between low-cloud amount and several large-scale properties are consistent with those observed in five low-cloud regions. There is an imbalance in the surface energy budget, which is an aspect of the model that needs to be improved in the future. JF - Journal of Climate AU - Xu, Kuan-Man AU - Cheng, Anning AD - Climate Science Branch, NASA Langley Research Center, Hampton, Virginia Y1 - 2013/08// PY - 2013 DA - August 2013 SP - 5717 EP - 5740 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 26 IS - 16 SN - 0894-8755, 0894-8755 KW - Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Horizontal distribution KW - Ecological distribution KW - AS, Atlantic, Intertropical Convergence Zone KW - Intertropical Convergence Zone KW - turbulence KW - IS, Pacific KW - Cores KW - Ocean-atmosphere system KW - Climatology KW - Modelling KW - Marine KW - Climate models KW - Climates KW - Vertical Distribution KW - ISEW, South Pacific, South Pacific Convergence Zone KW - Atmospheric circulation KW - Precipitation KW - A, Atlantic KW - Energy budget KW - Model Studies KW - Vertical profiles KW - Clouds KW - Numerical simulations KW - General circulation models KW - Cloud parameterization KW - LIDAR KW - Q2 09243:Structure, mechanics and thermodynamics KW - SW 5010:Network design KW - M2 551.581:Latitudinal Influences (551.581) KW - AQ 00005:Underground Services and Water Use UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1434019819?accountid=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+Low-Cloud+Simulation+from+an+Upgraded+Multiscale+Modeling+Framework+Model.+Part+I%3A+Sensitivity+to+Spatial+Resolution+and+Climatology&rft.au=Xu%2C+Kuan-Man%3BCheng%2C+Anning&rft.aulast=Xu&rft.aufirst=Kuan-Man&rft.date=2013-08-01&rft.volume=26&rft.issue=16&rft.spage=5717&rft.isbn=&rft.btitle=&rft.title=Journal+of+Climate&rft.issn=08948755&rft_id=info:doi/10.1175%2FJCLI-D-12-00200.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-09-01 N1 - Number of references - 55 N1 - Last updated - 2016-04-29 N1 - SubjectsTermNotLitGenreText - Horizontal distribution; Ecological distribution; Ocean-atmosphere system; Atmospheric circulation; Climatology; LIDAR; Energy budget; Vertical profiles; Modelling; Clouds; Climate models; Numerical simulations; General circulation models; Intertropical Convergence Zone; Cloud parameterization; Precipitation; Cores; Climates; Vertical Distribution; turbulence; Model Studies; AS, Atlantic, Intertropical Convergence Zone; ISEW, South Pacific, South Pacific Convergence Zone; IS, Pacific; A, Atlantic; Marine DO - http://dx.doi.org/10.1175/JCLI-D-12-00200.1 ER - TY - JOUR T1 - Regional Climate and Variability of NASA MERRA and Recent Reanalyses: U.S. Summertime Precipitation and Temperature AN - 1434017898; 18450313 AB - Reanalyses have increasingly improved resolution and physical representation of regional climate and so may provide useful data in many regional applications. These data are not observations, however, and their limitations and uncertainties need to be closely investigated. The ability of reanalyses to reproduce the seasonal variations of precipitation and temperature over the United States during summer, when model forecasts have characteristically weak forecast skill, is assessed. Precipitation variations are reproduced well over much of the United States, especially in the Northwest, where ENSO contributes to the large-scale circulation. Some significant biases in the seasonal mean do exist. The weakest regions are the Midwest and Southeast, where land-atmosphere interactions strongly affect the physical parameterizations in the forecast model. In particular, the variance of the Modern-Era Retrospective Analysis for Research and Applications (MERRA) is too low (extreme seasonal averages are weak), and the variability of the Interim ECMWF Re-Analysis (ERA-Interim) is affected by spurious low-frequency trends. Surface temperature is generally robust among the reanalyses examined, though; reanalyses that assimilate near-surface observations have distinct advantages. Observations and forecast error from MERRA are used to assess the reanalysis uncertainty across U.S. regions. These data help to show where the reanalysis is realistically replicating physical processes, and they provide guidance on the quality of the data and needs for further development. JF - Journal of Applied Meteorology and Climatology AU - Bosilovich, Michael G AD - Global Modeling and Assimilation Office, NASA Goddard Space Flight Center, Greenbelt, Maryland Y1 - 2013/08// PY - 2013 DA - August 2013 SP - 1939 EP - 1951 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 52 IS - 8 SN - 1558-8424, 1558-8424 KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Aqualine Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Surface temperatures KW - Variability KW - Seasonal Variations KW - Climate change KW - Regional climates KW - Data reanalysis KW - European Centre for Medium-Range Weather Forecasts KW - Climatology KW - Seasonal variations KW - El Nino phenomena KW - Climates KW - Temperature KW - Atmospheric circulation KW - Precipitation KW - Errors KW - Model Studies KW - Southern Oscillation KW - USA KW - El Nino-Southern Oscillation event KW - Q2 09243:Structure, mechanics and thermodynamics KW - AQ 00001:Water Resources and Supplies KW - SW 5010:Network design KW - M2 551.588:Environmental Influences (551.588) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1434017898?accountid=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=Regional+Climate+and+Variability+of+NASA+MERRA+and+Recent+Reanalyses%3A+U.S.+Summertime+Precipitation+and+Temperature&rft.au=Bosilovich%2C+Michael+G&rft.aulast=Bosilovich&rft.aufirst=Michael&rft.date=2013-08-01&rft.volume=52&rft.issue=8&rft.spage=1939&rft.isbn=&rft.btitle=&rft.title=Journal+of+Applied+Meteorology+and+Climatology&rft.issn=15588424&rft_id=info:doi/10.1175%2FJAMC-D-12-0291.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-09-01 N1 - Number of references - 36 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Climate change; Climatology; El Nino phenomena; Southern Oscillation; Surface temperatures; El Nino-Southern Oscillation event; European Centre for Medium-Range Weather Forecasts; Atmospheric circulation; Regional climates; Precipitation; Seasonal variations; Data reanalysis; Seasonal Variations; Variability; Climates; Temperature; Errors; Model Studies; USA DO - http://dx.doi.org/10.1175/JAMC-D-12-0291.1 ER - TY - JOUR T1 - New constraints on the size of chondrite parent bodies AN - 1434006079; 2013-073819 AB - Carbonaceous chondrites make up a majority of asteroids in the asteroid belt, yet are relatively rare in meteorite collections at approximately 5%. The rare CR carbonaceous chondrites are providing a wealth of new discoveries including (1) abundant organic compounds required for biochemical processes, (2) pre-solar mineral grains that hold isotopic records of stellar processes, (3) inclusions, chondrules, and chondrule rims that contain information about the early Solar System, (4) hydrous minerals that formed during aqueous alteration of the matrix and other components, and (5) foreign clasts that formed at slightly higher pressures than normally expected in the early Solar System. All of these discoveries suggest these carbonaceous meteorites will continue providing new information and help to revise our understanding of the broad range of conditions existing in the early Solar System. JF - American Mineralogist AU - Righter, Kevin Y1 - 2013/08// PY - 2013 DA - August 2013 SP - 1379 EP - 1380 PB - Mineralogical Society of America, Washington, DC VL - 98 IS - 8-9 SN - 0003-004X, 0003-004X KW - stony meteorites KW - asteroids KW - refractory materials KW - parent bodies KW - calcium-aluminum inclusions KW - carbonaceous chondrites KW - early solar system KW - meteorites KW - organic compounds KW - chondrules KW - metamorphic rocks KW - inclusions KW - chondrites KW - eclogite KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1434006079?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=New+constraints+on+the+size+of+chondrite+parent+bodies&rft.au=Righter%2C+Kevin&rft.aulast=Righter&rft.aufirst=Kevin&rft.date=2013-08-01&rft.volume=98&rft.issue=8-9&rft.spage=1379&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam.2013.4555 L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2013-01-01 N1 - Number of references - 16 N1 - PubXState - DC N1 - Last updated - 2013-09-20 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - asteroids; calcium-aluminum inclusions; carbonaceous chondrites; chondrites; chondrules; early solar system; eclogite; inclusions; metamorphic rocks; meteorites; organic compounds; parent bodies; refractory materials; stony meteorites DO - http://dx.doi.org/10.2138/am.2013.4555 ER - TY - JOUR T1 - Midlatitude storms in a moister world: lessons from idealized baroclinic life cycle experiments AN - 1427006414; 18319605 AB - The response of midlatitude storms to global warming remains uncertain. This is due, in part, to the competing effects of a weaker meridional surface temperature gradient and a higher low-level moisture content, both of which are projected to occur as a consequence of increasing greenhouse gases. Here we address the latter of these two effects, and try to elucidate the effect of increased moisture on the development and evolution of midlatitude storms. We do this with a set of highly controlled, baroclinic lifecycle experiments, in which atmospheric moisture is progressively increased. To assess the robustness of the results, the moisture content is changed in two different ways: first by using different initial relative humidity, and second by varying a parameter that we insert into the Clausius-Clapeyron equation. The latter method allows us to artificially increase the moisture content above current levels while keeping the relative humidity constant. Irrespective of how moisture is altered, we find that nearly all important measures of storm strength increase as the moisture content rises. Specifically, we examine the storm's central pressure minimum, the strongest surface winds, and both extreme and accumulated precipitation rates. For all these metrics, increased moisture yields a stronger storm. Interestingly, we also find that when moisture is increased beyond current levels, the resulting storm has a reduced horizontal scale while its vertical extent increases. Finally, we note that for moisture increases comparable to those projected to occur by the end of the twentyfirst century, the actual amplitude of the increases in storm strength is relatively modest, irrespective of the specific measure one uses. JF - Climate Dynamics AU - Booth, James F AU - Wang, Shuguang AU - Polvani, Lorenzo AD - NASA Goddard Institute for Space Studies, 2880 Broadway, New York, NY, 10025, USA, jbooth.atmos@gmail.com Y1 - 2013/08// PY - 2013 DA - August 2013 SP - 787 EP - 802 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 41 IS - 3-4 SN - 0930-7575, 0930-7575 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Sustainability Science Abstracts; Meteorological & Geoastrophysical Abstracts KW - Surface winds KW - Relative humidity KW - Moisture KW - Surface temperatures KW - Life cycle analysis KW - Rainfall KW - Climate change KW - Life cycle KW - Storms KW - Relative Humidity KW - Extratropical cyclones KW - Abiotic factors KW - Temperature effects KW - Mathematical models KW - Climates KW - Humidity KW - Greenhouse effect KW - Precipitation KW - Water content KW - Global Warming KW - Strength KW - Global warming KW - Moisture Content KW - Greenhouse gases KW - Evolution KW - Precipitation Rate KW - SW 0810:General KW - M3 1010:Issues in Sustainable Development KW - M2 551.588:Environmental Influences (551.588) KW - Q2 09244:Air-sea coupling UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1427006414?accountid=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=Climate+Dynamics&rft.atitle=Midlatitude+storms+in+a+moister+world%3A+lessons+from+idealized+baroclinic+life+cycle+experiments&rft.au=Booth%2C+James+F%3BWang%2C+Shuguang%3BPolvani%2C+Lorenzo&rft.aulast=Booth&rft.aufirst=James&rft.date=2013-08-01&rft.volume=41&rft.issue=3-4&rft.spage=787&rft.isbn=&rft.btitle=&rft.title=Climate+Dynamics&rft.issn=09307575&rft_id=info:doi/10.1007%2Fs00382-012-1472-3 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-08-01 N1 - Number of references - 45 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Temperature effects; Relative humidity; Mathematical models; Climate change; Life cycle; Greenhouse effect; Water content; Storms; Abiotic factors; Surface winds; Surface temperatures; Global warming; Precipitation; Greenhouse gases; Extratropical cyclones; Life cycle analysis; Rainfall; Humidity; Moisture; Strength; Climates; Moisture Content; Global Warming; Evolution; Relative Humidity; Precipitation Rate DO - http://dx.doi.org/10.1007/s00382-012-1472-3 ER - TY - JOUR T1 - Broken ergodicity in magnetohydrodynamic turbulence AN - 1427001259; 18330173 AB - Turbulent magnetofluids appear in various geophysical and astrophysical contexts, in phenomena associated with planets, stars, galaxies and the universe itself. In many cases, large-scale magnetic fields are observed, though a better knowledge of magnetofluid turbulence is needed to more fully understand the dynamo processes that produce them. One approach is to develop the statistical mechanics of ideal (i.e. non-dissipative), incompressible, homogeneous magnetohydrodynamic (MHD) turbulence, known as "absolute equilibrium ensemble" theory, as far as possible by studying model systems with the goal of finding those aspects that survive the introduction of viscosity and resistivity. Here, we review the progress that has been made in this direction. We examine both three-dimensional (3-D) and two-dimensional (2-D) model systems based on discrete Fourier representations. The basic equations are those of incompressible MHD and may include the effects of rotation and/or a mean magnetic field B sub(o). Statistical predictions are that Fourier coefficients of the velocity and magnetic field are zero-mean random variables. However, this is not the case, in general, for we observe non-ergodic behavior in very long time computer simulations of ideal turbulence: low wavenumber Fourier modes that have relatively large means and small standard deviations, i.e. coherent structure. In particular, ergodicity appears strongly broken when B sub(o) = 0 and weakly broken when B sub(o) [ne] 0. Broken ergodicity in MHD turbulence is explained by an eigenanalysis of modal covariance matrices. This produces a set of modal eigenvalues inversely proportional to the expected energy of their associated eigenvariables. A large disparity in eigenvalues within the same mode (identified by wavevector k ) can occur at low values of wavenumber k = | k |, especially when B sub(o) = 0. This disparity breaks the ergodicity of eigenvariables with smallest eigenvalues (largest energies). This leads to coherent structure in models of ideal homogeneous MHD turbulence, which can occur at lowest values of wavenumber k for 3-D cases, and at either lowest or highest k for ideal 2-D magnetofluids. These ideal results appear relevant for unforced, decaying MHD turbulence, so that broken ergodicity effects in MHD turbulence survive dissipation. In comparison, we will also examine ideal hydrodynamic (HD) turbulence, which, in the 3-D case, will be seen to differ fundamentally from ideal MHD turbulence in that coherent structure due to broken ergodicity can only occur at maximum k in numerical simulations. However, a nonzero viscosity eliminates this ideal 3-D HD structure, so that unforced, decaying 3-D HD turbulence is expected to be ergodic. In summary, broken ergodicity in MHD turbulence leads to energetic, large-scale, quasistationary magnetic fields (coherent structures) in numerical models of bounded, turbulent magnetofluids. Thus, broken ergodicity provides a large-scale dynamo mechanism within computer models of homogeneous MHD turbulence. These results may help us to better understand the origin of global magnetic fields in astrophysical and geophysical objects. JF - Geophysical and Astrophysical Fluid Dynamics AU - Shebalin, John V AD - NASA Johnson Space Center, Mail Code KR, Houston, TX 77058, USA, john.v.shebalin@nasa.gov Y1 - 2013/08/01/ PY - 2013 DA - 2013 Aug 01 SP - 411 EP - 466 PB - Taylor & Francis Group Ltd., 2 Park Square Oxford OX14 4RN United Kingdom VL - 107 IS - 4 SN - 0309-1929, 0309-1929 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Prediction KW - Mathematical models KW - Hydrodynamics KW - Statistical analysis KW - Galaxies KW - Simulation KW - turbulence KW - Resistivity KW - Model Studies KW - Magnetic fields KW - Eigenvalues KW - Stellar planets KW - Viscosity KW - Standard Deviation KW - Numerical simulations KW - Computer models KW - Magnetohydrodynamics KW - Fluid dynamics KW - Computer Models KW - Turbulence KW - SW 0810:General KW - M2 523.4:Planets (523.4) KW - Q2 09183:Physics and chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1427001259?accountid=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+and+Astrophysical+Fluid+Dynamics&rft.atitle=Broken+ergodicity+in+magnetohydrodynamic+turbulence&rft.au=Shebalin%2C+John+V&rft.aulast=Shebalin&rft.aufirst=John&rft.date=2013-08-01&rft.volume=107&rft.issue=4&rft.spage=411&rft.isbn=&rft.btitle=&rft.title=Geophysical+and+Astrophysical+Fluid+Dynamics&rft.issn=03091929&rft_id=info:doi/10.1080%2F03091929.2011.589385 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-08-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Magnetic fields; Mathematical models; Fluid dynamics; Simulation; Turbulence; Viscosity; Stellar planets; Eigenvalues; Computer models; Numerical simulations; Magnetohydrodynamics; Galaxies; Statistical analysis; Prediction; Standard Deviation; Hydrodynamics; turbulence; Computer Models; Resistivity; Model Studies DO - http://dx.doi.org/10.1080/03091929.2011.589385 ER - TY - NEWS T1 - The Zero Gravity Coffee Cup AN - 1415460390 JF - UPI Space Daily AU - Dr. Tony Phillips for NASA Science News Y1 - 2013/07/31/ PY - 2013 DA - 2013 Jul 31 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1415460390?accountid=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+Zero+Gravity+Coffee+Cup&rft.au=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2013-07-31&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 - 2013-07-31 ER - TY - NEWS T1 - 'Brown Ocean' Can Fuel Inland Tropical Cyclones AN - 1415457958 JF - UPI Space Daily AU - Kathryn Hansen for NASA Earth News Y1 - 2013/07/31/ PY - 2013 DA - 2013 Jul 31 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1415457958?accountid=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=%27Brown+Ocean%27+Can+Fuel+Inland+Tropical+Cyclones&rft.au=Kathryn+Hansen+for+NASA+Earth+News&rft.aulast=Kathryn+Hansen+for+NASA+Earth+News&rft.aufirst=&rft.date=2013-07-31&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 - 2013-07-31 ER - TY - JOUR T1 - A hematite-bearing layer in Gale Crater, Mars; mapping and implications for past aqueous conditions AN - 1429845112; 2013-069358 AB - Oversampled Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) visible and near-infrared hyperspectral data over Mount Sharp in Gale Crater, Mars, were used to generate spatially sharpened maps of the location of red crystalline hematite within the uppermost stratum of an approximately 6.5-km-long ridge on the mound's northern flank. Finely layered strata underlie the ridge to the north and have dips consistent with the nearby Mount Sharp sedimentary sequence. Fe-Mg smectites are exposed in a valley to the south of the ridge. Emplacement of the hematite is hypothesized to result either from exposure of anoxic Fe (super 2+) -rich groundwater to an oxidizing environment, leading to precipitation of hematite or its precursors, or from in-place weathering of precursor silicate materials under oxidizing conditions. These hypotheses and implications for habitability will be testable with in situ measurements by the Mars rover Curiosity when it reaches Mount Sharp. JF - Geology (Boulder) AU - Fraeman, A A AU - Arvidson, R E AU - Catalano, J G AU - Grotzinger, J P AU - Morris, R V AU - Murchie, S L AU - Stack, K M AU - Humm, D C AU - McGovern, J A AU - Seelos, F P AU - Seelos, K D AU - Viviano, C E Y1 - 2013/07/30/ PY - 2013 DA - 2013 Jul 30 SP - 1103 EP - 1106 PB - Geological Society of America (GSA), Boulder, CO VL - 41 IS - 10 SN - 0091-7613, 0091-7613 KW - water KW - hyperspectral analysis KW - CRISM KW - Mars KW - satellite methods KW - iron KW - Gale Crater KW - ferrous iron KW - terrestrial planets KW - Aeolis Mons KW - planets KW - paleoenvironment KW - hematite KW - metals KW - sediments KW - oxides KW - depositional environment KW - Compact Reconnaisance Imaging Spectrometer for Mars KW - aquatic environment KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1429845112?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geology+%28Boulder%29&rft.atitle=A+hematite-bearing+layer+in+Gale+Crater%2C+Mars%3B+mapping+and+implications+for+past+aqueous+conditions&rft.au=Fraeman%2C+A+A%3BArvidson%2C+R+E%3BCatalano%2C+J+G%3BGrotzinger%2C+J+P%3BMorris%2C+R+V%3BMurchie%2C+S+L%3BStack%2C+K+M%3BHumm%2C+D+C%3BMcGovern%2C+J+A%3BSeelos%2C+F+P%3BSeelos%2C+K+D%3BViviano%2C+C+E&rft.aulast=Fraeman&rft.aufirst=A&rft.date=2013-07-30&rft.volume=41&rft.issue=10&rft.spage=1103&rft.isbn=&rft.btitle=&rft.title=Geology+%28Boulder%29&rft.issn=00917613&rft_id=info:doi/10.1130%2FG34613.1 L2 - http://www.gsajournals.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States | Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2013-01-01 N1 - Number of references - 20 N1 - PubXState - CO N1 - Document feature - illus. incl. sketch map N1 - Last updated - 2014-01-09 N1 - CODEN - GLGYBA N1 - SubjectsTermNotLitGenreText - Aeolis Mons; aquatic environment; Compact Reconnaisance Imaging Spectrometer for Mars; CRISM; depositional environment; ferrous iron; Gale Crater; hematite; hyperspectral analysis; iron; Mars; metals; oxides; paleoenvironment; planets; remote sensing; satellite methods; sediments; terrestrial planets; water DO - http://dx.doi.org/10.1130/G34613.1 ER - TY - NEWS T1 - NASA's Polar Robotic Ranger Passes First Greenland Test AN - 1412119080 JF - UPI Space Daily AU - Maria-Jose Vieas for NASA Earth Science News Y1 - 2013/07/25/ PY - 2013 DA - 2013 Jul 25 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1412119080?accountid=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%27s+Polar+Robotic+Ranger+Passes+First+Greenland+Test&rft.au=Maria-Jose+Vieas+for+NASA+Earth+Science+News&rft.aulast=Maria-Jose+Vieas+for+NASA+Earth+Science+News&rft.aufirst=&rft.date=2013-07-25&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 - 2013-07-25 ER - TY - NEWS T1 - Increasing the Speed of Deep Space Communications AN - 1411058148 JF - UPI Space Daily AU - Nancy Smith Kilkenny for Glenn Research Center Y1 - 2013/07/23/ PY - 2013 DA - 2013 Jul 23 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1411058148?accountid=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=Increasing+the+Speed+of+Deep+Space+Communications&rft.au=Nancy+Smith+Kilkenny+for+Glenn+Research+Center&rft.aulast=Nancy+Smith+Kilkenny+for+Glenn+Research+Center&rft.aufirst=&rft.date=2013-07-23&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 - 2013-07-23 ER - TY - CPAPER T1 - Contributions of the NASA Biodiversity and Ecological Forecasting Programs to Conservation Biology T2 - 26th International Congress for Conservation Biology (ICCB 2013) AN - 1433510320; 6235211 JF - 26th International Congress for Conservation Biology (ICCB 2013) AU - Leidner, Allison AU - Turner, Woody Y1 - 2013/07/21/ PY - 2013 DA - 2013 Jul 21 KW - Prediction KW - Biological diversity KW - Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1433510320?accountid=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=26th+International+Congress+for+Conservation+Biology+%28ICCB+2013%29&rft.atitle=Contributions+of+the+NASA+Biodiversity+and+Ecological+Forecasting+Programs+to+Conservation+Biology&rft.au=Leidner%2C+Allison%3BTurner%2C+Woody&rft.aulast=Leidner&rft.aufirst=Allison&rft.date=2013-07-21&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=26th+International+Congress+for+Conservation+Biology+%28ICCB+2013%29&rft.issn=&rft_id=info:doi/ L2 - http://www.conbio.org/images/content_conferences/ICCB2013_Program_July10_2013WEB.pdf LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-08-31 N1 - Last updated - 2013-09-19 ER - TY - JOUR T1 - Abundance and Isotopic Composition of Gases in the Martian Atmosphere from the Curiosity Rover AN - 1554944124; 20374206 AB - Mars' Atmosphere from CuriosityThe Sample Analysis at Mars (SAM) instrument on the Curiosity rover that landed on Mars in August last year is designed to study the chemical and isotopic composition of the martian atmosphere. Mahaffy et al. (p. 263) present volume-mixing ratios of Mars' five major atmospheric constituents (CO2, Ar, N2, O2, and CO) and isotope measurements of 40Ar/36Ar and C and O in CO2, based on data from one of SAM's instruments, obtained between 31 August and 21 November 2012. Webster et al. (p. 260) used data from another of SAM's instruments obtained around the same period to determine isotope ratios of H, C, and O in atmospheric CO2 and H2O. Agreement between the isotopic ratios measured by SAM with those of martian meteorites, measured in laboratories on Earth, confirms the origin of these meteorites and implies that the current atmospheric reservoirs of CO2 and H2O were largely established after the period of early atmospheric loss some 4 billion years ago. JF - Science AU - Mahaffy, Paul R AU - Webster, Christopher R AU - Atreya, Sushil K AU - Franz, Heather AU - Wong, Michael AU - Conrad, Pamela G AU - Harpold, Dan AU - Jones, John J AU - Leshin, Laurie A AU - Manning, Heidi AU - Owen, Tobias AU - Pepin, Robert O AU - Squyres, Steven AU - Trainer, Melissa AU - Kemppinen, Osku AU - Bridges, Nathan AU - Johnson, Jeffrey R AU - Minitti, Michelle AU - Cremers, David AU - Bell, James F AU - Edgar, Lauren AU - Farmer, Jack AU - Godber, Austin AU - Wadhwa, Meenakshi AU - Wellington, Danika AU - McEwan, Ian AU - Newman, Claire AU - Richardson, Mark AU - Charpentier, Antoine AU - Peret, Laurent AU - King, Penelope AU - Blank, Jennifer AU - Weigle, Gerald AU - Schmidt, Mariek AU - Li, Shuai AU - Milliken, Ralph AU - Robertson, Kevin AU - Sun, Vivian AU - Baker, Michael AU - Edwards, Christopher AU - Ehlmann, Bethany AU - Farley, Kenneth AU - Griffes, Jennifer AU - Grotzinger, John AU - Miller, Hayden AU - Newcombe, Megan AU - Pilorget, Cedric AU - Rice, Melissa AU - Siebach, Kirsten AU - Stack, Katie AU - et. al. AD - NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA, paul.r.mahaffy@nasa.gov Y1 - 2013/07/19/ PY - 2013 DA - 2013 Jul 19 SP - 263 EP - 266 PB - American Association for the Advancement of Science, 1200 New York Avenue, NW Washington DC 20005 United States VL - 341 IS - 6143 SN - 0036-8075, 0036-8075 KW - Meteorological & Geoastrophysical Abstracts; Ecology Abstracts KW - Isotopes KW - Data processing KW - Meteorite impacts on Mars KW - Mars atmospheric composition KW - Abundance KW - Mars KW - Atmosphere KW - Meteorite origin KW - Mars landings KW - Meteor in Mars atmosphere KW - Mars atmosphere KW - Gases KW - Mars atmospheric chemistry KW - Carbon dioxide KW - Reservoirs KW - D 04040:Ecosystem and Ecology Studies KW - M2 523.4:Planets (523.4) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1554944124?accountid=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=Science&rft.atitle=Abundance+and+Isotopic+Composition+of+Gases+in+the+Martian+Atmosphere+from+the+Curiosity+Rover&rft.au=Mahaffy%2C+Paul+R%3BWebster%2C+Christopher+R%3BAtreya%2C+Sushil+K%3BFranz%2C+Heather%3BWong%2C+Michael%3BConrad%2C+Pamela+G%3BHarpold%2C+Dan%3BJones%2C+John+J%3BLeshin%2C+Laurie+A%3BManning%2C+Heidi%3BOwen%2C+Tobias%3BPepin%2C+Robert+O%3BSquyres%2C+Steven%3BTrainer%2C+Melissa%3BKemppinen%2C+Osku%3BBridges%2C+Nathan%3BJohnson%2C+Jeffrey+R%3BMinitti%2C+Michelle%3BCremers%2C+David%3BBell%2C+James+F%3BEdgar%2C+Lauren%3BFarmer%2C+Jack%3BGodber%2C+Austin%3BWadhwa%2C+Meenakshi%3BWellington%2C+Danika%3BMcEwan%2C+Ian%3BNewman%2C+Claire%3BRichardson%2C+Mark%3BCharpentier%2C+Antoine%3BPeret%2C+Laurent%3BKing%2C+Penelope%3BBlank%2C+Jennifer%3BWeigle%2C+Gerald%3BSchmidt%2C+Mariek%3BLi%2C+Shuai%3BMilliken%2C+Ralph%3BRobertson%2C+Kevin%3BSun%2C+Vivian%3BBaker%2C+Michael%3BEdwards%2C+Christopher%3BEhlmann%2C+Bethany%3BFarley%2C+Kenneth%3BGriffes%2C+Jennifer%3BGrotzinger%2C+John%3BMiller%2C+Hayden%3BNewcombe%2C+Megan%3BPilorget%2C+Cedric%3BRice%2C+Melissa%3BSiebach%2C+Kirsten%3BStack%2C+Katie%3Bet.+al.&rft.aulast=Mahaffy&rft.aufirst=Paul&rft.date=2013-07-19&rft.volume=341&rft.issue=6143&rft.spage=263&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.1237966 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-08-01 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Isotopes; Gases; Data processing; Abundance; Carbon dioxide; Atmosphere; Mars atmosphere; Meteor in Mars atmosphere; Meteorite impacts on Mars; Mars atmospheric composition; Mars atmospheric chemistry; Mars; Reservoirs; Meteorite origin; Mars landings DO - http://dx.doi.org/10.1126/science.1237966 ER - TY - JOUR T1 - Curating NASA's extraterrestrial samples AN - 1510394894; 2014-019385 AB - Curation of extraterrestrial samples is the critical interface between sample return missions and the international research community. Curation includes documentation, preservation, physical security, preparation, and allocation of samples for research, education, and public outreach. Abstract Copyright This paper is not subject to U.S. copyright. Published in 2013 by the American Geophysical Union. JF - Eos, Transactions, American Geophysical Union AU - Allen, Carlton AU - Allton, Judith AU - Lofgren, Gary AU - Righter, Kevin AU - Zeigler, Ryan AU - Zolensky, Michael Y1 - 2013/07/16/ PY - 2013 DA - 2013 Jul 16 SP - 253 EP - 254 PB - American Geophysical Union, Washington, DC VL - 94 IS - 29 SN - 0096-3941, 0096-3941 KW - asteroids KW - Moon KW - solar wind KW - samples KW - meteorites KW - curation KW - cosmic dust KW - comets KW - extraterrestrial geology KW - conservation KW - interstellar dust KW - preservation KW - storage KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1510394894?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Curating+NASA%27s+extraterrestrial+samples&rft.au=Allen%2C+Carlton%3BAllton%2C+Judith%3BLofgren%2C+Gary%3BRighter%2C+Kevin%3BZeigler%2C+Ryan%3BZolensky%2C+Michael&rft.aulast=Allen&rft.aufirst=Carlton&rft.date=2013-07-16&rft.volume=94&rft.issue=29&rft.spage=253&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/10.1002%2F2013EO290001 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292324-9250 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 14 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2014-03-27 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - asteroids; comets; conservation; cosmic dust; curation; extraterrestrial geology; interstellar dust; meteorites; Moon; preservation; samples; solar wind; storage DO - http://dx.doi.org/10.1002/2013EO290001 ER - TY - JOUR T1 - Lunar laser topography by LALT on board the KAGUYA lunar explorer; operational history, new topographic data, peak height analysis of laser echo pulses AN - 1553089205; 2014-023780 JF - Advances in Space Research AU - Araki, Hiroshi AU - Noda, Hirotomo AU - Tazawa, Seiichi AU - Ishihara, Yoshiaki AU - Goossens, Sander AU - Sasaki, Sho Y1 - 2013/07/15/ PY - 2013 DA - 2013 Jul 15 SP - 262 EP - 271 PB - Elsevier, Oxford-New York VL - 52 IS - 2 SN - 0273-1177, 0273-1177 KW - topography KW - technology KW - laser methods KW - Moon KW - LALT KW - geomorphology KW - instruments KW - Kaguya Orbiter KW - exploration KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1553089205?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Advances+in+Space+Research&rft.atitle=Lunar+laser+topography+by+LALT+on+board+the+KAGUYA+lunar+explorer%3B+operational+history%2C+new+topographic+data%2C+peak+height+analysis+of+laser+echo+pulses&rft.au=Araki%2C+Hiroshi%3BNoda%2C+Hirotomo%3BTazawa%2C+Seiichi%3BIshihara%2C+Yoshiaki%3BGoossens%2C+Sander%3BSasaki%2C+Sho&rft.aulast=Araki&rft.aufirst=Hiroshi&rft.date=2013-07-15&rft.volume=52&rft.issue=2&rft.spage=262&rft.isbn=&rft.btitle=&rft.title=Advances+in+Space+Research&rft.issn=02731177&rft_id=info:doi/10.1016%2Fj.asr.2013.02.018 L2 - http://www.sciencedirect.com/science/journal/02731177 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 16 N1 - Document feature - illus. incl. 6 tables N1 - Last updated - 2014-08-14 N1 - CODEN - ASRSDW N1 - SubjectsTermNotLitGenreText - exploration; geomorphology; instruments; Kaguya Orbiter; LALT; laser methods; Moon; technology; topography DO - http://dx.doi.org/10.1016/j.asr.2013.02.018 ER - TY - NEWS T1 - Opportunity's Improbable Anniversary AN - 1399902007 JF - UPI Space Daily AU - Dr. Tony Phillips for NASA Science News Y1 - 2013/07/15/ PY - 2013 DA - 2013 Jul 15 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1399902007?accountid=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=Opportunity%27s+Improbable+Anniversary&rft.au=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2013-07-15&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 - 2013-07-15 ER - TY - JOUR T1 - Measuring global volcanic degassing with the Ozone Monitoring Instrument (OMI) AN - 1420518067; 2013-065631 AB - The ultraviolet (UV) Ozone Monitoring Instrument (OMI), launched on NASA's Aura satellite in July 2004, was the first space-based sensor to provide operational sulphur dioxide (SO (sub 2) ) measurements (OMSO2) for use by the scientific community. Herein, we discuss the application of OMSO2 data for the monitoring of global volcanic SO (sub 2) emissions, with an emphasis on lower tropospheric volcanic plumes. We review the algorithms used to produce OMSO2 data and highlight some key measurement sensitivity issues. The data processing scheme used to generate web-based OMSO2 data subsets for volcanic regions and estimate SO (sub 2) burdens in volcanic plumes is outlined. We describe three techniques to derive SO (sub 2) emission rates from the OMSO2 measurements, and employ one method (using single OMI pixels to estimate SO (sub 2) fluxes) to elucidate SO (sub 2) flux detection thresholds on a global scale. Applications of OMSO2 data to volcanic degassing studies are demonstrated using four case studies. These examples show how OMSO2 measurements correlate with changes in eruptive activity at Kilauea volcano (Hawaii), constrain small, potentially significant SO (sub 2) releases from reawakening, historically inactive volcanoes, track long-term changes in SO (sub 2) degassing from Nyiragongo volcano (D.R. Congo), and detect SO (sub 2) emissions from the remote Lastarria Volcano (Chile), in the actively deforming Lazufre region. JF - Special Publication - Geological Society of London AU - Carn, Simon A AU - Krotkov, N A AU - Yang, K AU - Krueger, A J Y1 - 2013/07/11/ PY - 2013 DA - 2013 Jul 11 SP - 229 EP - 257 PB - Geological Society of London, London VL - 380 IS - 1 SN - 0305-8719, 0305-8719 KW - sulfur dioxide KW - Ozone Monitoring Instrument KW - monitoring KW - global KW - data processing KW - satellite methods KW - gases KW - automated analysis KW - case studies KW - Aura KW - detection KW - Earth Observing System KW - volcanism KW - eruptions KW - volcanoes KW - algorithms KW - remote sensing KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1420518067?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Measuring+global+volcanic+degassing+with+the+Ozone+Monitoring+Instrument+%28OMI%29&rft.au=Carn%2C+Simon+A%3BKrotkov%2C+N+A%3BYang%2C+K%3BKrueger%2C+A+J&rft.aulast=Carn&rft.aufirst=Simon&rft.date=2013-07-11&rft.volume=380&rft.issue=1&rft.spage=229&rft.isbn=&rft.btitle=&rft.title=Special+Publication+-+Geological+Society+of+London&rft.issn=03058719&rft_id=info:doi/10.1144%2FSP380.12 L2 - http://sp.lyellcollection.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from The Geological Society, London, London, United Kingdom N1 - Date revised - 2013-01-01 N1 - Number of references - 103 N1 - Document feature - illus. incl. 1 table, sketch map N1 - SuppNotes - Online First N1 - Last updated - 2014-01-09 N1 - CODEN - GSLSBW N1 - SubjectsTermNotLitGenreText - algorithms; Aura; automated analysis; case studies; data processing; detection; Earth Observing System; eruptions; gases; global; monitoring; Ozone Monitoring Instrument; remote sensing; satellite methods; sulfur dioxide; volcanism; volcanoes DO - http://dx.doi.org/10.1144/SP380.12 ER - TY - JOUR T1 - Retinoic Acid and Arsenic Trioxide for Acute Promyelocytic Leukemia AN - 1399555936; 23841729 AB - Background All-trans retinoic acid (ATRA) with chemotherapy is the standard of care for acute promyelocytic leukemia (APL), resulting in cure rates exceeding 80%. Pilot studies of treatment with arsenic trioxide with or without ATRA have shown high efficacy and reduced hematologic toxicity. Methods We conducted a phase 3, multicenter trial comparing ATRA plus chemotherapy with ATRA plus arsenic trioxide in patients with APL classified as low-to-intermediate risk (white-cell count, ≤10×109 per liter). Patients were randomly assigned to receive either ATRA plus arsenic trioxide for induction and consolidation therapy or standard ATRA-idarubicin induction therapy followed by three cycles of consolidation therapy with ATRA plus chemotherapy and maintenance therapy with low-dose chemotherapy and ATRA. The study was designed as a noninferiority trial to show that the difference between the rates of event-free survival at 2 years in the two groups was not greater than 5%. Results Complete remission was achieved in all 77 patients in the ATRA-arsenic trioxide group who could be evaluated (100%) and in 75 of 79 patients in the ATRA-chemotherapy group (95%) (P=0.12). The median follow-up was 34.4 months. Two-year event-free survival rates were 97% in the ATRA-arsenic trioxide group and 86% in the ATRA-chemotherapy group (95% confidence interval for the difference, 2 to 22 percentage points; P<0.001 for noninferiority and P=0.02 for superiority of ATRA-arsenic trioxide). Overall survival was also better with ATRA-arsenic trioxide (P=0.02). As compared with ATRA-chemotherapy, ATRA-arsenic trioxide was associated with less hematologic toxicity and fewer infections but with more hepatic toxicity. Conclusions ATRA plus arsenic trioxide is at least not inferior and may be superior to ATRA plus chemotherapy in the treatment of patients with low-to-intermediate-risk APL. (Funded by Associazione Italiana contro le Leucemie and others; ClinicalTrials.gov number, NCT00482833.) JF - The New England Journal of Medicine AU - Lo-Coco, Francesco, MD AU - Avvisati, Giuseppe, MD, PhD AU - Vignetti, Marco, MD AU - Thiede, Christian, MD AU - Orlando, Sonia Maria, BSc AU - Iacobelli, Simona, PhD AU - Ferrara, Felicetto, MD AU - Fazi, Paola, MD AU - Cicconi, Laura, MD AU - Di Bona, Eros, MD AU - Specchia, Giorgina, MD AU - Sica, Simona, MD AU - Divona, Mariadomenica, BSc AU - Levis, Alessandro, MD AU - Fiedler, Walter, MD AU - Cerqui, Elisa, MD AU - Breccia, Massimo, MD AU - Fioritoni, Giuseppe, MD AU - Salih, Helmut R, MD AU - Cazzola, Mario, MD AU - Melillo, Lorella, MD AU - Carella, Angelo M, MD AU - Brandts, Christian H, MD AU - Morra, Enrica, MD AU - von Lilienfeld-Toal, Marie, MD AU - Hertenstein, Bernd, MD AU - Wattad, Mohammed, MD AU - Lübbert, Michael, MD AU - Hänel, Matthias, MD AU - Schmitz, Norbert, MD AU - Link, Hartmut, MD AU - Kropp, Maria Grazia, MD AU - Rambaldi, Alessandro, MD AU - La Nasa, Giorgio, MD AU - Luppi, Mario, MD AU - Ciceri, Fabio, MD AU - Finizio, Olimpia, MD AU - Venditti, Adriano, MD AU - Fabbiano, Francesco, MD AU - Döhner, Konstanze, MD AU - Sauer, Michaela, BSc AU - Ganser, Arnold, MD AU - Amadori, Sergio, MD AU - Mandelli, Franco, MD AU - Döhner, Hartmut, MD AU - Ehninger, Gerhard, MD AU - Schlenk, Richard F, MD AU - Platzbecker, Uwe, MD Y1 - 2013/07/11/ PY - 2013 DA - 2013 Jul 11 SP - 111 EP - 21 CY - Boston PB - Massachusetts Medical Society VL - 369 IS - 2 SN - 00284793 KW - Medical Sciences KW - Arsenicals KW - Oxides KW - arsenic trioxide KW - Tretinoin KW - Leukemia KW - Drug therapy KW - Arsenic KW - Consolidation KW - Studies KW - Pharmaceutical industry KW - Chemotherapy KW - Young Adult KW - Disease-Free Survival KW - Oxides -- adverse effects KW - Humans KW - Induction Chemotherapy KW - Leukemia, Promyelocytic, Acute -- genetics KW - Neutropenia -- chemically induced KW - Aged KW - Maintenance Chemotherapy KW - Antineoplastic Combined Chemotherapy Protocols -- adverse effects KW - Tretinoin -- adverse effects KW - Consolidation Chemotherapy KW - Adult KW - Thrombocytopenia -- chemically induced KW - Middle Aged KW - Arsenicals -- adverse effects KW - Female KW - Male KW - Oxides -- therapeutic use KW - Arsenicals -- therapeutic use KW - Leukemia, Promyelocytic, Acute -- drug therapy KW - Antineoplastic Combined Chemotherapy Protocols -- therapeutic use KW - Tretinoin -- therapeutic use UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1399555936?accountid=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=The+New+England+Journal+of+Medicine&rft.atitle=Retinoic+Acid+and+Arsenic+Trioxide+for+Acute+Promyelocytic+Leukemia&rft.au=Lo-Coco%2C+Francesco%2C+MD%3BAvvisati%2C+Giuseppe%2C+MD%2C+PhD%3BVignetti%2C+Marco%2C+MD%3BThiede%2C+Christian%2C+MD%3BOrlando%2C+Sonia+Maria%2C+BSc%3BIacobelli%2C+Simona%2C+PhD%3BFerrara%2C+Felicetto%2C+MD%3BFazi%2C+Paola%2C+MD%3BCicconi%2C+Laura%2C+MD%3BDi+Bona%2C+Eros%2C+MD%3BSpecchia%2C+Giorgina%2C+MD%3BSica%2C+Simona%2C+MD%3BDivona%2C+Mariadomenica%2C+BSc%3BLevis%2C+Alessandro%2C+MD%3BFiedler%2C+Walter%2C+MD%3BCerqui%2C+Elisa%2C+MD%3BBreccia%2C+Massimo%2C+MD%3BFioritoni%2C+Giuseppe%2C+MD%3BSalih%2C+Helmut+R%2C+MD%3BCazzola%2C+Mario%2C+MD%3BMelillo%2C+Lorella%2C+MD%3BCarella%2C+Angelo+M%2C+MD%3BBrandts%2C+Christian+H%2C+MD%3BMorra%2C+Enrica%2C+MD%3Bvon+Lilienfeld-Toal%2C+Marie%2C+MD%3BHertenstein%2C+Bernd%2C+MD%3BWattad%2C+Mohammed%2C+MD%3BL%C3%BCbbert%2C+Michael%2C+MD%3BH%C3%A4nel%2C+Matthias%2C+MD%3BSchmitz%2C+Norbert%2C+MD%3BLink%2C+Hartmut%2C+MD%3BKropp%2C+Maria+Grazia%2C+MD%3BRambaldi%2C+Alessandro%2C+MD%3BLa+Nasa%2C+Giorgio%2C+MD%3BLuppi%2C+Mario%2C+MD%3BCiceri%2C+Fabio%2C+MD%3BFinizio%2C+Olimpia%2C+MD%3BVenditti%2C+Adriano%2C+MD%3BFabbiano%2C+Francesco%2C+MD%3BD%C3%B6hner%2C+Konstanze%2C+MD%3BSauer%2C+Michaela%2C+BSc%3BGanser%2C+Arnold%2C+MD%3BAmadori%2C+Sergio%2C+MD%3BMandelli%2C+Franco%2C+MD%3BD%C3%B6hner%2C+Hartmut%2C+MD%3BEhninger%2C+Gerhard%2C+MD%3BSchlenk%2C+Richard+F%2C+MD%3BPlatzbecker%2C+Uwe%2C+MD&rft.aulast=Lo-Coco&rft.aufirst=Francesco&rft.date=2013-07-11&rft.volume=369&rft.issue=2&rft.spage=111&rft.isbn=&rft.btitle=&rft.title=The+New+England+Journal+of+Medicine&rft.issn=00284793&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright © 2013 Massachusetts Medical Society. All rights reserved. N1 - Last updated - 2014-03-10 N1 - CODEN - NEJMAG ER - TY - JOUR T1 - MODELING THE LINE-OF-SIGHT INTEGRATED EMISSION IN THE CORONA: IMPLICATIONS FOR CORONAL HEATING AN - 1705082636; PQ0001811349 AB - One of the outstanding problems in all of space science is uncovering how the solar corona is heated to temperatures greater than 1 MK. Though studied for decades, one of the major difficulties in solving this problem has been unraveling the line-of-sight (LOS) effects in the observations. The corona is optically thin, so a single pixel measures counts from an indeterminate number (perhaps tens of thousands) of independently heated flux tubes, all along that pixel's LOS. In this paper we model the emission in individual pixels imaging the active region corona in the extreme ultraviolet. If LOS effects are not properly taken into account, erroneous conclusions regarding both coronal heating and coronal dynamics may be reached. We model the corona as an LOS integration of many thousands of completely independently heated flux tubes. We demonstrate that despite the superposition of randomly heated flux tubes, nanoflares leave distinct signatures in light curves observed with multi-wavelength and high time cadence data, such as those data taken with the Atmospheric Imaging Assembly on board the Solar Dynamics Observatory. These signatures are readily detected with the time-lag analysis technique of Viall & Klimchuk in 2012. Steady coronal heating leaves a different and equally distinct signature that is also revealed by the technique. JF - Astrophysical Journal AU - Viall, Nicholeen M AU - Klimchuk, James A AD - NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA Y1 - 2013/07/10/ PY - 2013 DA - 2013 Jul 10 SP - 1 EP - 5 PB - IOP Publishing, The Public Ledger Building, Suite 929 Philadelphia PA 19106 United States VL - 771 IS - 2 SN - 0004-637X, 0004-637X KW - Pollution Abstracts; Meteorological & Geoastrophysical Abstracts KW - Sun: corona KW - Corona KW - Space science KW - Atmospheric pollution models KW - Solar observatories KW - Solar observations KW - Emissions KW - Temperature KW - Coronal heating KW - Nanoflares KW - Solar atmosphere dynamics 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/1705082636?accountid=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=MODELING+THE+LINE-OF-SIGHT+INTEGRATED+EMISSION+IN+THE+CORONA%3A+IMPLICATIONS+FOR+CORONAL+HEATING&rft.au=Viall%2C+Nicholeen+M%3BKlimchuk%2C+James+A&rft.aulast=Viall&rft.aufirst=Nicholeen&rft.date=2013-07-10&rft.volume=771&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%2F771%2F2%2F115 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Last updated - 2015-11-16 N1 - SubjectsTermNotLitGenreText - Corona; Space science; Solar observatories; Atmospheric pollution models; Solar observations; Coronal heating; Nanoflares; Solar atmosphere dynamics; Temperature; Emissions DO - http://dx.doi.org/10.1088/0004-637X/771/2/115 ER - TY - NEWS T1 - Is Arctic Permafrost the "Sleeping Giant" of Climate Change? AN - 1398982363 JF - UPI Space Daily AU - Dr. Tony Phillips for NASA Science News Y1 - 2013/07/10/ PY - 2013 DA - 2013 Jul 10 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1398982363?accountid=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=Is+Arctic+Permafrost+the+%22Sleeping+Giant%22+of+Climate+Change%3F&rft.au=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2013-07-10&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 - 2013-07-10 ER - TY - JOUR T1 - Apparent optical properties of the Canadian Beaufort Sea. Part 2: The 1% and 1 cm perspective in deriving and validating AOP data products AN - 1427011246; 18322411 AB - A next-generation in-water profiler designed to measure the apparent optical properties (AOPs) of seawater was developed and validated across a wide dynamic range of in-water properties. The new free-falling instrument, the Compact-Optical Profiling System (C-OPS), was based on sensors built with a cluster of 19 state-of-the-art microradiometers spanning 320-780 nm and a novel kite-shaped backplane. The new backplane includes tunable ballast, a hydrobaric buoyancy chamber, plus pitch and roll adjustments, to provide unprecedented stability and vertical resolution in near-surface waters. A unique data set was collected as part of the development activity plus the first major field campaign that used the new instrument, the Malina expedition to the Beaufort Sea in the vicinity of the Mackenzie River outflow. The data were of sufficient resolution and quality to show that errors - more correctly, uncertainties - in the execution of data sampling protocols were measurable at the 1% and 1 cm level with C-OPS. A theoretical sensitivity analysis as a function of three water types established by the peak in the remote sensing reflectance spectrum, R sub(rs)( lambda ), revealed which water types and which parts of the spectrum were the most sensitive to data acquisition uncertainties. Shallow riverine waters were the most sensitive water type, and the ultraviolet and near-infrared spectral end members, which are critical to next-generation satellite missions, were the most sensitive parts of the spectrum. The sensitivity analysis also showed how the use of data products based on band ratios significantly mitigated the influence of data acquisition uncertainties. The unprecedented vertical resolution provided high-quality data products, which supported an alternative classification capability based on the spectral diffuse attenuation coefficient, K sub(d)( lambda ). The K sub(d)(320) and K sub(d)(780) data showed how complex coastal systems can be distinguished two-dimensionally and how near-ice water masses are different from the neighboring open ocean. Finally, an algorithm for predicting the spectral absorption due to colored dissolved organic matter (CDOM), denoted a sub(CDOM)( lambda ), was developed using the K sub(d)(320) / K sub(d)(780) ratio, which was based on a linear relationship with respect to a sub(CDOM)(440). The robustness of the approach was established by expanding the use of the algorithm to include a geographically different coastal environment, the Southern Mid-Atlantic Bight, with no significant change in accuracy (approximately 98% of the variance explained). Alternative spectral end members reminiscent of next-generation (340 and 710 nm) as well as legacy satellite missions (412 and 670 nm) were also used to accurately derive a sub(CDOM)(440) from K sub(d) Citation: Hooker, S. B., Morrow, J. H., and Matsuoka, A.: Apparent optical properties of the Canadian Beaufort Sea - Part 2: The 1% and 1 cm perspective in deriving and validating AOP data products, Biogeosciences, 10, 4511-4527, doi:10.5194/bg-10-4511-2013, 2013. JF - Biogeosciences AU - Hooker, S B AU - Morrow, J H AU - Matsuoka, A AD - NASA Goddard Space Flight Center, Ocean Ecology Laboratory, Greenbelt, Maryland 20771, USA Y1 - 2013/07/04/ PY - 2013 DA - 2013 Jul 04 SP - 4511 EP - 4527 PB - European Geosciences Union, c/o E.O.S.T. Strasbourg Cedex 67084 France VL - 10 IS - 7 SN - 1726-4170, 1726-4170 KW - Ecology Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Oceanic Abstracts; Water Resources Abstracts KW - PNW, Beaufort Sea KW - Remote Sensing KW - Reflectance KW - Coastal environments KW - Optical properties KW - Algorithms KW - Remote sensing KW - Freshwater KW - Sensitivity Analysis KW - U.V. radiation KW - Extinction coefficient KW - Classification KW - Data Acquisition KW - Marine environment KW - Canada, Northwest Terr., Mackenzie R. KW - Optical Properties KW - Sampling KW - Data acquisition KW - Buoyancy KW - Expeditions KW - Rivers KW - Satellite Technology KW - River outflow KW - Data processing KW - I.R. radiation KW - Mathematical models KW - Bights KW - dissolved organic matter KW - Profiling KW - Satellites KW - Oceans KW - Dissolved organic matter KW - ANW, USA, Mid-Atlantic Bight KW - O 2010:Physical Oceanography KW - Q2 09223:Optical properties KW - SW 5040:Data acquisition KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1427011246?accountid=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=Biogeosciences&rft.atitle=Apparent+optical+properties+of+the+Canadian+Beaufort+Sea.+Part+2%3A+The+1%25+and+1+cm+perspective+in+deriving+and+validating+AOP+data+products&rft.au=Hooker%2C+S+B%3BMorrow%2C+J+H%3BMatsuoka%2C+A&rft.aulast=Hooker&rft.aufirst=S&rft.date=2013-07-04&rft.volume=10&rft.issue=7&rft.spage=4511&rft.isbn=&rft.btitle=&rft.title=Biogeosciences&rft.issn=17264170&rft_id=info:doi/10.5194%2Fbg-10-4511-2013 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-08-01 N1 - Last updated - 2014-05-15 N1 - SubjectsTermNotLitGenreText - River outflow; Mathematical models; Classification; Extinction coefficient; Dissolved organic matter; Optical properties; Profiling; Data acquisition; Expeditions; Rivers; I.R. radiation; Reflectance; Data processing; Coastal environments; dissolved organic matter; Remote sensing; Algorithms; Satellites; U.V. radiation; Marine environment; Oceans; Sampling; Buoyancy; Sensitivity Analysis; Remote Sensing; Satellite Technology; Bights; Data Acquisition; Optical Properties; PNW, Beaufort Sea; Canada, Northwest Terr., Mackenzie R.; ANW, USA, Mid-Atlantic Bight; Freshwater DO - http://dx.doi.org/10.5194/bg-10-4511-2013 ER - TY - JOUR T1 - Global resurfacing of Mercury 4.0-4.1 billion years ago by heavy bombardment and volcanism AN - 1420508171; 2013-063353 JF - Nature (London) AU - Marchi, Simone AU - Chapman, Clark R AU - Fassett, Caleb I AU - Head, James W AU - Bottke, W F AU - Strom, Robert G Y1 - 2013/07/04/ PY - 2013 DA - 2013 Jul 04 SP - 59 EP - 61 PB - Macmillan Journals, London VL - 499 IS - 7456 SN - 0028-0836, 0028-0836 KW - Hadean KW - Precambrian KW - Moon KW - resurfacing KW - late heavy bombardment KW - impacts KW - terrestrial planets KW - planets KW - craters KW - volcanism KW - Mercury Planet KW - interplanetary comparison KW - MESSENGER Mission KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1420508171?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Global+resurfacing+of+Mercury+4.0-4.1+billion+years+ago+by+heavy+bombardment+and+volcanism&rft.au=Marchi%2C+Simone%3BChapman%2C+Clark+R%3BFassett%2C+Caleb+I%3BHead%2C+James+W%3BBottke%2C+W+F%3BStrom%2C+Robert+G&rft.aulast=Marchi&rft.aufirst=Simone&rft.date=2013-07-04&rft.volume=499&rft.issue=7456&rft.spage=59&rft.isbn=&rft.btitle=&rft.title=Nature+%28London%29&rft.issn=00280836&rft_id=info:doi/10.1038%2Fnature12280 L2 - http://www.nature.com/nature/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 31 N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2013-10-17 N1 - CODEN - NATUAS N1 - SubjectsTermNotLitGenreText - craters; Hadean; impacts; interplanetary comparison; late heavy bombardment; Mercury Planet; MESSENGER Mission; Moon; planets; Precambrian; resurfacing; terrestrial planets; volcanism DO - http://dx.doi.org/10.1038/nature12280 ER - TY - JOUR T1 - The same frequency of planets inside and outside open clusters of stars AN - 1420507822; 2013-063352 JF - Nature (London) AU - Meibom, Soren AU - Torres, Guillermo AU - Fressin, Francois AU - Latham, David W AU - Rowe, Jason F AU - Ciardi, David R AU - Bryson, Steven T AU - Rogers, Leslie A AU - Henze, Christopher E AU - Janes, Kenneth AU - Barnes, Sydney A AU - Marcy, Geoffrey W AU - Isaacson, Howard AU - Fischer, Debra A AU - Howell, Steve B AU - Horch, Elliott P AU - Jenkins, Jon M AU - Schuler, Simon C AU - Crepp, Justin Y1 - 2013/07/04/ PY - 2013 DA - 2013 Jul 04 SP - 55 EP - 58 PB - Macmillan Journals, London VL - 499 IS - 7456 SN - 0028-0836, 0028-0836 KW - models KW - genesis KW - planets KW - extrasolar planets KW - stars KW - orbits KW - interplanetary comparison KW - frequency KW - size KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1420507822?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=The+same+frequency+of+planets+inside+and+outside+open+clusters+of+stars&rft.au=Meibom%2C+Soren%3BTorres%2C+Guillermo%3BFressin%2C+Francois%3BLatham%2C+David+W%3BRowe%2C+Jason+F%3BCiardi%2C+David+R%3BBryson%2C+Steven+T%3BRogers%2C+Leslie+A%3BHenze%2C+Christopher+E%3BJanes%2C+Kenneth%3BBarnes%2C+Sydney+A%3BMarcy%2C+Geoffrey+W%3BIsaacson%2C+Howard%3BFischer%2C+Debra+A%3BHowell%2C+Steve+B%3BHorch%2C+Elliott+P%3BJenkins%2C+Jon+M%3BSchuler%2C+Simon+C%3BCrepp%2C+Justin&rft.aulast=Meibom&rft.aufirst=Soren&rft.date=2013-07-04&rft.volume=499&rft.issue=7456&rft.spage=55&rft.isbn=&rft.btitle=&rft.title=Nature+%28London%29&rft.issn=00280836&rft_id=info:doi/10.1038%2Fnature12279 L2 - http://www.nature.com/nature/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 28 N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Related article by Welsh, W. F. on p. 33-34 N1 - Last updated - 2013-08-15 N1 - CODEN - NATUAS N1 - SubjectsTermNotLitGenreText - extrasolar planets; frequency; genesis; interplanetary comparison; models; orbits; planets; size; stars DO - http://dx.doi.org/10.1038/nature12279 ER - TY - JOUR T1 - Magnetic Field Observations as Voyager 1 Entered the Heliosheath Depletion Region AN - 1709716514; 20374146 AB - Unexpected Magnetic HighwayThe heliopause is thought to separate the heliosphere (the bubble of plasma and magnetic field originating at the Sun) from interstellar plasma and magnetic field. In August last year, the Voyager 1 spacecraft, which was launched 35 years ago, was 18.5 billion kilometers away from the Sun, close to the expected location of the heliopause. Krimigis et al. (p. 144, published online 27 June) report observations of energetic ions and electrons by Voyager 1 that suggest that a sharp and distinct boundary was crossed five times over similar to 30 days. Burlaga et al. (p. 147, published online 27 June) found that the magnetic field direction did not change across any of the boundary crossings, indicating that Voyager 1 had not crossed the heliopause but had entered a region in the heliosphere that serves as a magnetic highway along which low-energy ions from inside stream away and galactic cosmic rays flow in from interstellar space. Stone et al. (p. 150, published online 27 June) report the spectra of low-energy galactic cosmic rays in this unexpected region. JF - Science AU - Burlaga, L F AU - Ness, N F AU - Stone, E C AD - NASA-Goddard Space Flight Center, Greenbelt, MD 20771, USA lburlagahsp@verizon.net PY - 2013 SP - 147 EP - 150 PB - American Association for the Advancement of Science, 1200 New York Avenue, NW Washington DC 20005 United States VL - 341 IS - 6142 SN - 0036-8075, 0036-8075 KW - Solid State and Superconductivity Abstracts (SO); Environmental Engineering Abstracts (EN); Aerospace & High Technology Database (AH) KW - Magnetic fields KW - Heliopause KW - Sun KW - Online KW - Boundaries KW - Low energy KW - Galactic cosmic rays KW - Heliosphere UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1709716514?accountid=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=Science&rft.atitle=Magnetic+Field+Observations+as+Voyager+1+Entered+the+Heliosheath+Depletion+Region&rft.au=Burlaga%2C+L+F%3BNess%2C+N+F%3BStone%2C+E+C&rft.aulast=Burlaga&rft.aufirst=L&rft.date=2013-07-02&rft.volume=341&rft.issue=6142&rft.spage=147&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.1235451 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-09-01 N1 - Last updated - 2016-02-03 DO - http://dx.doi.org/10.1126/science.1235451 ER - TY - NEWS T1 - Strange Flames on the ISS AN - 1373275210 JF - UPI Space Daily AU - Dr. Tony Phillips for NASA Science News Y1 - 2013/07/02/ PY - 2013 DA - 2013 Jul 02 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1373275210?accountid=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=Strange+Flames+on+the+ISS&rft.au=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2013-07-02&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 - 2013-07-02 ER - TY - JOUR T1 - Finding Science and Engineering Specific Data Set Usage or Funding Acknowledgements AN - 1728645929; 201508531 AB - Many scholarly articles have a section called Acknowledgement(s) just before the list of references. The Acknowledgements section in scientific publications has become common and grown in importance since the 1960s. This section may be used to acknowledge the contributions of people who are not considered authors, the source(s) of funding for the research, or something else the author(s) want to acknowledge about the research for the publication. As interest has grown in various publication metrics, information in the Acknowledgement section may be useful for creating a particular metric or identification of publication patterns. The purpose of this paper is to briefly review the pertinent publications about studying acknowledgements and then discuss how to find funding or source data information. It concludes with three examples of actual search for acknowledgement metrics to support the value of a particular project. Adapted from the source document. JF - Issues in Science & Technology Librarianship AU - Coppin, Ann AD - Jet Propulsion Laboratory, California Institute of Technology Pasadena, California ann.s.coppin@jpl.nasa.gov Y1 - 2013/07// PY - 2013 DA - July 2013 PB - Association of College and Research Libraries, Chicago, IL IS - 73 SN - 1092-1206, 1092-1206 KW - Funding KW - Engineering KW - Datasets KW - Journals KW - Articles KW - Science KW - article KW - 16.16: PUBLISHING UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1728645929?accountid=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=Issues+in+Science+%26+Technology+Librarianship&rft.atitle=Finding+Science+and+Engineering+Specific+Data+Set+Usage+or+Funding+Acknowledgements&rft.au=Coppin%2C+Ann&rft.aulast=Coppin&rft.aufirst=Ann&rft.date=2013-07-01&rft.volume=&rft.issue=73&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Issues+in+Science+%26+Technology+Librarianship&rft.issn=10921206&rft_id=info:doi/10.5062%2FF4CV4FP0 L2 - http://www.istl.org/ LA - English DB - Library & Information Science Abstracts (LISA) N1 - Date revised - 2015-11-01 N1 - Last updated - 2016-09-27 N1 - SubjectsTermNotLitGenreText - Science; Articles; Engineering; Datasets; Funding; Journals DO - http://dx.doi.org/10.5062/F4CV4FP0 ER - TY - JOUR T1 - Reuse and Recycle: The Development of Adaptive Expertise, Routine Expertise, and Novelty in a Large Research Team AN - 1665158050 AB - Combining innovation and efficiency is ideal in many organizational settings. Adaptive expertise represents a cognitive explanation of how individuals and teams can learn to achieve simultaneous innovation and efficiency. In 2004, scientists led twin rovers on Mars in the search for historical water. The science team experienced a remarkable increase in efficiency, adapting with flexibility to unexpected events and dynamic, dwindling resources. After discussing the conceptual differences between adaptive expertise and related team learning and innovation concepts, we examine longitudinal behavioral data on novelty, routine and adaptive expertise. Sequential time series ARIMA analyses reveal that novelty fluctuated randomly, but both routine and adaptive expertise significantly increased over time. In addition, novelty, routine expertise, and adaptive expertise did not significantly predict each other directly or at a lag, suggesting that these are indeed three distinct constructs. Implications for theory and research on efficiency and innovation are discussed. Copyright © 2013 John Wiley & Sons, Ltd. JF - Applied Cognitive Psychology AU - Paletz, Susannah B F AU - Kim, Kevin H AU - Schunn, Christian D AU - Tollinger, Irene AU - Vera, Alonso AD - Center for Advanced Study of Language, University of Maryland, College Park, MD, USA. ; School of Education, University of Pittsburgh, Pittsburgh, PA, USA. ; Learning Research and Development Center, University of Pittsburgh, Pittsburgh, PA, USA. ; Human Systems Integration Division, NASA Ames Research Center, Moffett Field, CA, USA. ; Center for Advanced Study of Language, University of Maryland, College Park, MD, USA. Y1 - 2013/07// PY - 2013 DA - Jul 2013 SP - 415 EP - 428 CY - Bognor Regis PB - Wiley Subscription Services, Inc. VL - 27 IS - 4 SN - 0888-4080 KW - Psychology KW - Expertise KW - Flexibility KW - Innovation KW - Learning KW - Reuse KW - Teams KW - Time series KW - Water UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1665158050?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aassia&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Applied+Cognitive+Psychology&rft.atitle=Reuse+and+Recycle%3A+The+Development+of+Adaptive+Expertise%2C+Routine+Expertise%2C+and+Novelty+in+a+Large+Research+Team&rft.au=Paletz%2C+Susannah+B+F%3BKim%2C+Kevin+H%3BSchunn%2C+Christian+D%3BTollinger%2C+Irene%3BVera%2C+Alonso&rft.aulast=Paletz&rft.aufirst=Susannah+B&rft.date=2013-07-01&rft.volume=27&rft.issue=4&rft.spage=415&rft.isbn=&rft.btitle=&rft.title=Applied+Cognitive+Psychology&rft.issn=08884080&rft_id=info:doi/10.1002%2Facp.2928 LA - English DB - Applied Social Sciences Index & Abstracts (ASSIA) N1 - Copyright - Copyright Wiley Subscription Services, Inc. Jul 2013 N1 - Date revised - 2015-01-09 N1 - Last updated - 2016-11-16 DO - http://dx.doi.org/10.1002/acp.2928 ER - TY - JOUR T1 - Petrologic constraints on amorphous and crystalline magnesium silicates; dust formation and evolution in selected Herbig Ae/Be systems AN - 1618132694; 2014-086180 AB - The Infrared Space Observatory, Spitzer Space Telescope, and Herschel Space Observatory surveys provided a wealth of data on the Mg-silicate minerals (forsterite, enstatite), silica, and "amorphous silicates with olivine and pyroxene stoichiometry" around Herbig Ae/Be stars. These incredible findings do not resonate with the mainstream Earth Sciences because of (1) disconnecting "astronomical nomenclature" and the long existing mineralogical and petrologic terminology of minerals and amorphous materials, and (2) the fact that Earth scientists (formerly geologists) are bound by the "Principle of Actualism" that was put forward by James Hutton (1726-1797). This principle takes a process-oriented approach to understanding mineral and rock formation and evolution. This paper will (1) review and summarize the results of laboratory-based vapor phase condensation and thermal annealing experiments, (2) present the pathways of magnesiosilica condensates to Mg-silicate mineral (forsterite, enstatite) formation and processing, and (3) present mineralogical and petrologic implications of the properties and compositions of the infrared-observed crystalline and amorphous dust for the state of circumstellar disk evolution. That is, the IR-observation of smectite layer silicates in HD142527 suggests the break-up of asteroid-like parent bodies that had experienced aqueous alteration. We discuss the persistence of amorphous dust around some young stars and an ultrafast amorphous to crystalline dust transition in HD 163296 that leads to forsterite grains with numerous silica inclusions. These dust evolution processes to form forsterite, enstatite + or - tridymite could occur due to amorphous magnesiosilica dust precursors with a serpentine- or smectite-dehydroxylate composition. Copyright (Copyright) 2013. The American Astronomical Society. All rights reserved. JF - The Astrophysical Journal AU - Rietmeijer, Frans J M AU - Nuth, Joseph A Y1 - 2013/07/01/ PY - 2013 DA - 2013 Jul 01 EP - Paper No. 34 PB - IOP Publishing for American Astronomical Society, Bristol VL - 771 IS - 1 SN - 0004-637X, 0004-637X KW - silicates KW - magnesian silicates KW - asteroids KW - silica minerals KW - olivine group KW - protoplanetary disk KW - circumstellar dust KW - laboratory studies KW - pyroxene group KW - tridymite KW - orthosilicates KW - framework silicates KW - condensates KW - enstatite KW - chain silicates KW - condensation KW - amorphous materials KW - parent bodies KW - smectite KW - forsterite KW - clay minerals KW - nesosilicates KW - aqueous alteration KW - cosmic dust KW - stars KW - Herbig Ae/Be stars KW - sheet silicates KW - orthopyroxene KW - annealing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1618132694?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+Astrophysical+Journal&rft.atitle=Petrologic+constraints+on+amorphous+and+crystalline+magnesium+silicates%3B+dust+formation+and+evolution+in+selected+Herbig+Ae%2FBe+systems&rft.au=Rietmeijer%2C+Frans+J+M%3BNuth%2C+Joseph+A&rft.aulast=Rietmeijer&rft.aufirst=Frans+J&rft.date=2013-07-01&rft.volume=771&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%2F771%2F1%2F34 L2 - http://iopscience.iop.org/0004-637X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data supplied by IOP Publishing Ltd., London, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 109 N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2014-10-30 N1 - SubjectsTermNotLitGenreText - amorphous materials; annealing; aqueous alteration; asteroids; chain silicates; circumstellar dust; clay minerals; condensates; condensation; cosmic dust; enstatite; forsterite; framework silicates; Herbig Ae/Be stars; laboratory studies; magnesian silicates; nesosilicates; olivine group; orthopyroxene; orthosilicates; parent bodies; protoplanetary disk; pyroxene group; sheet silicates; silica minerals; silicates; smectite; stars; tridymite DO - http://dx.doi.org/10.1088/0004-637X/771/1/34 ER - TY - JOUR T1 - Glycine's radiolytic destruction in ices; first in situ laboratory measurements for Mars AN - 1549620665; 2014-059447 JF - Astrobiology AU - Gerakines, Perry A AU - Hudson, Reggie L Y1 - 2013/07// PY - 2013 DA - July 2013 SP - 647 EP - 655 PB - Mary Ann Liebert, Larchmont, NY VL - 13 IS - 7 SN - 1531-1074, 1531-1074 KW - experimental studies KW - irradiation KW - in situ KW - radiation damage KW - glycine KW - Mars KW - infrared spectra KW - terrestrial planets KW - planets KW - laboratory studies KW - organic compounds KW - organic acids KW - ice KW - amino acids KW - spectra KW - radiolysis KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549620665?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Astrobiology&rft.atitle=Glycine%27s+radiolytic+destruction+in+ices%3B+first+in+situ+laboratory+measurements+for+Mars&rft.au=Gerakines%2C+Perry+A%3BHudson%2C+Reggie+L&rft.aulast=Gerakines&rft.aufirst=Perry&rft.date=2013-07-01&rft.volume=13&rft.issue=7&rft.spage=647&rft.isbn=&rft.btitle=&rft.title=Astrobiology&rft.issn=15311074&rft_id=info:doi/10.1089%2Fast.2012.0943 L2 - http://www.liebertpub.com/publication.aspx?pub_id=99 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 26 N1 - PubXState - NY N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2014-07-31 N1 - SubjectsTermNotLitGenreText - amino acids; experimental studies; glycine; ice; in situ; infrared spectra; irradiation; laboratory studies; Mars; organic acids; organic compounds; planets; radiation damage; radiolysis; spectra; terrestrial planets DO - http://dx.doi.org/10.1089/ast.2012.0943 ER - TY - JOUR T1 - Radiocarbon evidence of active endolithic microbial communities in the hyperarid core of the Atacama Desert AN - 1549619404; 2014-059445 JF - Astrobiology AU - Ziolkowski, Lori A AU - Wierzchos, Jacek AU - Davila, Alfonso F AU - Slater, Gregory F Y1 - 2013/07// PY - 2013 DA - July 2013 SP - 607 EP - 616 PB - Mary Ann Liebert, Larchmont, NY VL - 13 IS - 7 SN - 1531-1074, 1531-1074 KW - halides KW - communities KW - volcanic rocks KW - fatty acids KW - lipids KW - isotopes KW - igneous rocks KW - gas chromatograms KW - mass spectra KW - ecosystems KW - Chile KW - stable isotopes KW - carbon dioxide KW - radioactive isotopes KW - Atacama Desert KW - gypsum KW - carbon KW - chlorides KW - carboxylic acids KW - spectra KW - organic carbon KW - sulfates KW - isotope ratios KW - ignimbrite KW - C-13/C-12 KW - halite KW - pyroclastics KW - habitat KW - South America KW - organic compounds KW - organic acids KW - chromatograms KW - C-14 KW - preservation KW - endolithic taxa KW - microorganisms KW - hyper-arid environment KW - 02D:Isotope geochemistry KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549619404?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Astrobiology&rft.atitle=Radiocarbon+evidence+of+active+endolithic+microbial+communities+in+the+hyperarid+core+of+the+Atacama+Desert&rft.au=Ziolkowski%2C+Lori+A%3BWierzchos%2C+Jacek%3BDavila%2C+Alfonso+F%3BSlater%2C+Gregory+F&rft.aulast=Ziolkowski&rft.aufirst=Lori&rft.date=2013-07-01&rft.volume=13&rft.issue=7&rft.spage=607&rft.isbn=&rft.btitle=&rft.title=Astrobiology&rft.issn=15311074&rft_id=info:doi/10.1089%2Fast.2012.0854 L2 - http://www.liebertpub.com/publication.aspx?pub_id=99 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 49 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables, sketch map N1 - Last updated - 2014-11-13 N1 - SubjectsTermNotLitGenreText - Atacama Desert; C-13/C-12; C-14; carbon; carbon dioxide; carboxylic acids; Chile; chlorides; chromatograms; communities; ecosystems; endolithic taxa; fatty acids; gas chromatograms; gypsum; habitat; halides; halite; hyper-arid environment; igneous rocks; ignimbrite; isotope ratios; isotopes; lipids; mass spectra; microorganisms; organic acids; organic carbon; organic compounds; preservation; pyroclastics; radioactive isotopes; South America; spectra; stable isotopes; sulfates; volcanic rocks DO - http://dx.doi.org/10.1089/ast.2012.0854 ER - TY - JOUR T1 - Radiative constraints on the minimum atomic oxygen concentration in the mesopause region AN - 1541422573; 19770417 AB - Atomic oxygen [O] plays a fundamental role in the photochemistry and energy budget of the terrestrial mesopause region (80-100km). [O] is difficult to measure directly and is typically inferred at night from measurements of hydroxyl [OH] or molecular oxygen [O sub(2)] emissions. During the day, measurements of ozone [O sub(3)] concentration are used to infer [O]. These inferences carry significant uncertainties [Mlynczak et al., 2013a]. Recently, Mlynczak et al. [2013b] have used energy balance principles to set an upper limit on the annual global mean [O] concentration in the mesopause region. In this paper, we use night measurements of OH emission to set a lower limit on the global annual mean atomic oxygen concentration. These independent, radiatively constrained values of the maximum and minimum atomic oxygen concentration also place constraints on the magnitude of dynamical processes in the annual global mean energy budget of the mesopause region. Key Points * Minimum value of atomic oxygen is derived, based on radiative constraints * Max and Min [O] now known from radiation/energetics,independent of chemistry * Minimum O allows energy budget to be improved, including dynamical terms JF - Geophysical Research Letters AU - Mlynczak, Martin G AU - Hunt, Linda A AU - Marshall, BThomas AU - Mertens, Christopher J AU - Russell, James M AU - Siskind, David AU - Thompson, REarl AU - Gordley, Larry L AD - NASA Langley Research Center, Hampton, Virginia, USA. Y1 - 2013/07// PY - 2013 DA - July 2013 SP - 3777 EP - 3780 PB - American Geophysical Union, 2000 Florida Ave., N.W. Washington DC 20009 United States VL - 40 IS - 14 SN - 0094-8276, 0094-8276 KW - Environmental Engineering Abstracts (EN); Aerospace & High Technology Database (AH) KW - atomic oxygen KW - mesopause region KW - radiative constraints KW - energetics KW - Mesopause KW - Energy use KW - Energy budgets KW - Uncertainty KW - Emissions control KW - Night KW - Atomic oxygen KW - Geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1541422573?accountid=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=Radiative+constraints+on+the+minimum+atomic+oxygen+concentration+in+the+mesopause+region&rft.au=Mlynczak%2C+Martin+G%3BHunt%2C+Linda+A%3BMarshall%2C+BThomas%3BMertens%2C+Christopher+J%3BRussell%2C+James+M%3BSiskind%2C+David%3BThompson%2C+REarl%3BGordley%2C+Larry+L&rft.aulast=Mlynczak&rft.aufirst=Martin&rft.date=2013-07-01&rft.volume=40&rft.issue=14&rft.spage=3777&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2Fgrl.50725 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-07-01 N1 - Last updated - 2017-01-05 DO - http://dx.doi.org/10.1002/grl.50725 ER - TY - JOUR T1 - Time history of the Martian dynamo from crater magnetic field analysis AN - 1535201670; 2014-040894 AB - Large impacts simultaneously reset both the surface age and the magnetization of the entire depth of crust over areas comparable to the final size of the resulting craters. These properties make large impact craters (>300 km in diameter) ideal "magnetic markers" for constraining the history of the Martian core dynamo. However, the relationship between crustal magnetization and magnetic field measured in orbit is nonunique, making the measured magnetic field signature of an impact crater only a proxy for the magnetization (or lack thereof) below. Using Monte Carlo Fourier domain modeling of subsurface magnetization, we calculate probability distributions of the magnetic field signatures of partially and completely demagnetized craters. We compare these distributions to measured magnetic field signatures of 41 old impact craters on Mars larger than 300 km in diameter and calculate probabilities of their magnetization state. We compare these probabilities to cratering densities and absolute model ages and in this manner arrive at a robust time history of Martian large-crater magnetization and hence of the Martian dynamo. We conclude that the most likely scenario was a Mars dynamo active when the oldest detectable basins formed, ceasing before the Hellas and Utopia impacts, between 4.0 and 4.1 Ga (in model age) and not thereafter restarting. The Mars atmosphere was thereafter exposed directly to erosion by the solar wind, significantly altering the path of climate evolution. Further improvements to the history of the Martian dynamo will require better crater age estimates and lower altitude magnetic field data. Abstract Copyright (2013), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Lillis, Robert J AU - Robbins, Stuart AU - Manga, Michael AU - Halekas, Jasper S AU - Frey, Herbert V Y1 - 2013/07// PY - 2013 DA - July 2013 SP - 1488 EP - 1511 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 7 SN - 2169-9097, 2169-9097 KW - volcanic rocks KW - impact features KW - Hellas Basin KW - igneous rocks KW - Monte Carlo analysis KW - dynamos KW - statistical analysis KW - data processing KW - magnetization KW - paleomagnetism KW - Mars KW - magnetic field KW - terrestrial planets KW - Utopia Planitia KW - planets KW - volcanic features KW - Fourier analysis KW - planetary interiors KW - impact craters KW - core KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1535201670?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Time+history+of+the+Martian+dynamo+from+crater+magnetic+field+analysis&rft.au=Lillis%2C+Robert+J%3BRobbins%2C+Stuart%3BManga%2C+Michael%3BHalekas%2C+Jasper+S%3BFrey%2C+Herbert+V&rft.aulast=Lillis&rft.aufirst=Robert&rft.date=2013-07-01&rft.volume=118&rft.issue=7&rft.spage=1488&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2Fjgre.20105 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9100 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 101 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2014-06-13 N1 - SubjectsTermNotLitGenreText - core; data processing; dynamos; Fourier analysis; Hellas Basin; igneous rocks; impact craters; impact features; magnetic field; magnetization; Mars; Monte Carlo analysis; paleomagnetism; planetary interiors; planets; statistical analysis; terrestrial planets; Utopia Planitia; volcanic features; volcanic rocks DO - http://dx.doi.org/10.1002/jgre.20105 ER - TY - JOUR T1 - Precipitation intensity and variation during MC3E: A numerical modeling study AN - 1529949217; 19803195 AB - Previous observational studies have identified three different types of diurnal precipitation variation over the conterminous U.S.: localized afternoon rainfall maxima over the Mississippi and Ohio valleys, propagating mesoscale convective systems (MCSs) from the Rocky Mountain region, and propagating MCSs over the Appalachian Mountains. This study focuses on the second type, which involves nocturnal rainfall maxima from eastward-propagating MCSs on the lee side of the Rocky Mountains. This study evaluates model simulations with regard to rainfall using observations and assesses the impact of microphysics, surface fluxes, radiation, and terrain on the simulated diurnal rainfall variation. A regional high-resolution model was used to conduct a series of real-time forecasts during the Midlatitude Continental Convective Clouds Experiment (MC3E) in 2011 over the Southern Great Plains. The model ably captured most heavy precipitation events. When all forecast days are composited, the mean forecast depicts accurate, propagating precipitation features and thus the overall diurnal variation. However, individual forecasts tend to overestimate the rainfall for light precipitation events, have location errors, and misrepresent convection in some cases. A post mission case study is performed on one multi-cell, eastward-propagating MCS event; the results suggest that cold-pool dynamics were an important physical process. Model results also indicate that terrain effects are important during the initial stages of MCS development. By increasing the terrain height by 10%, the simulated rainfall is increased and in better agreement with observations. On the other hand, surface fluxes, and radiation processes only have a secondary effect for short-term simulations. Key Points * Model has captured rainfall diurnal variation feature during MC3E * Cold-pool dynamics is important in reproducing propagating MCSs * Compared with terrain, surface fluxes and radiation have a secondary effect JF - Journal of Geophysical Research: Atmospheres AU - Tao, Wei-Kuo AU - Wu, Di AU - Matsui, Toshihisa AU - Peters-Lidard, Christa AU - Lang, Stephen AU - Hou, Arthur AU - Rienecker, Michele AU - Petersen, Walter AU - Jensen, Michael AD - Mesoscale Atmospheric Processes Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2013/07// PY - 2013 DA - July 2013 SP - 7199 EP - 7218 PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD United Kingdom VL - 118 IS - 13 SN - 2169-897X, 2169-897X KW - Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - precipitation KW - numerical modeling KW - diurnal variation KW - Convection KW - Heavy precipitation KW - Rainfall KW - Convection development KW - Precipitation intensities KW - Mesoscale features KW - North America, Rocky Mts. KW - Mountains KW - Numerical models KW - Radiation KW - Surface fluxes KW - Mesoscale convective systems KW - Diurnal precipitation variations KW - Modelling KW - Diurnal variations KW - Mathematical models KW - Case Studies KW - Precipitation KW - Model Studies KW - Clouds KW - Numerical simulations KW - Convective activity KW - USA, Mississippi KW - Mountain regions KW - USA, Ohio KW - Q2 09243:Structure, mechanics and thermodynamics KW - AQ 00006:Sewage KW - SW 0810:General KW - M2 556.12:Precipitation (556.12) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1529949217?accountid=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+Geophysical+Research%3A+Atmospheres&rft.atitle=Precipitation+intensity+and+variation+during+MC3E%3A+A+numerical+modeling+study&rft.au=Tao%2C+Wei-Kuo%3BWu%2C+Di%3BMatsui%2C+Toshihisa%3BPeters-Lidard%2C+Christa%3BLang%2C+Stephen%3BHou%2C+Arthur%3BRienecker%2C+Michele%3BPetersen%2C+Walter%3BJensen%2C+Michael&rft.aulast=Tao&rft.aufirst=Wei-Kuo&rft.date=2013-07-01&rft.volume=118&rft.issue=13&rft.spage=7199&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2Fjgrd.50410 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-05-01 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Convection; Diurnal variations; Mathematical models; Radiation; Mesoscale features; Modelling; Heavy precipitation; Convection development; Precipitation; Precipitation intensities; Clouds; Numerical models; Numerical simulations; Convective activity; Surface fluxes; Mountain regions; Mesoscale convective systems; Diurnal precipitation variations; Mountains; Case Studies; Rainfall; Model Studies; North America, Rocky Mts.; USA, Mississippi; USA, Ohio DO - http://dx.doi.org/10.1002/jgrd.50410 ER - TY - JOUR T1 - Simplified mantle architecture and distribution of radiogenic power AN - 1529793611; 2014-034451 AB - The mantle components that represent the source region of ocean island basalts (OIB) and feed hotspot volcanism are predicted to contain 160 + or - 20 (2sigma (sub m) ) ng/g Th, a heat-producing element. This critical model composition indicates that the OIB source region (OSR) comprises a significant amount of recycled oceanic crust and constitutes 19 (super +3) (sub -2) (2sigma (sub m) )% of the mantle by mass. The mass fraction of this reservoir supports a mantle architecture with a basal thermochemical layering at an average depth of 2000 + or - 100 (2sigma (sub m) ) km or two thermochemical piles that extend up to midmantle levels. The hotspot source described here generates 10 pW/kg of radiogenic heat and supplies 7.3 TW to the planet's total surface heat flux. Given that the silicate portion of the Earth produces some 20.4 TW of radiogenic power, with 7.2 TW derived from the continental crust, the mantle source responsible for mid-ocean ridge volcanism provides only 5.9 TW of radiogenic power (or 5X more radiogenic heat than the source of mid-ocean ridges, thus contributing to the energetics that drive mantle convection and potentially the formation of long-lived plumes via bottom heating of the modern mantle. The potential for a sequestered or unsampled mantle reservoir would impact the relative mass fractions of the source regions of OIB and mid-ocean ridge volcanism but not the compositional model of the OSR presented here. Abstract Copyright (2013), . American Geophysical Union. All Rights Reserved. JF - Geochemistry, Geophysics, Geosystems - G3 AU - Arevalo, Ricardo, Jr AU - McDonough, William F AU - Stracke, Andreas AU - Willbold, Matthias AU - Ireland, Thomas J AU - Walker, Richard J Y1 - 2013/07// PY - 2013 DA - July 2013 SP - 2265 EP - 2285 PB - American Geophysical Union and The Geochemical Society VL - 14 IS - 7 KW - hot spots KW - volcanic rocks KW - isotopes KW - igneous rocks KW - mantle KW - lead KW - continental crust KW - stable isotopes KW - radioactive isotopes KW - major elements KW - volcanism KW - mass balance KW - heat flow KW - French Polynesia KW - basalts KW - thermochemical properties KW - rare earths KW - trace elements KW - ocean floors KW - mantle plumes KW - alkaline earth metals KW - numerical models KW - Pb-206/Pb-204 KW - isotope ratios KW - Cook Islands KW - Nd-144/Nd-143 KW - Sr-87/Sr-86 KW - plate tectonics KW - metals KW - Austral Islands KW - Oceania KW - Polynesia KW - neodymium KW - ocean-island basalts KW - strontium KW - crust KW - mid-ocean ridges KW - 18:Solid-earth geophysics KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1529793611?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Simplified+mantle+architecture+and+distribution+of+radiogenic+power&rft.au=Arevalo%2C+Ricardo%2C+Jr%3BMcDonough%2C+William+F%3BStracke%2C+Andreas%3BWillbold%2C+Matthias%3BIreland%2C+Thomas+J%3BWalker%2C+Richard+J&rft.aulast=Arevalo&rft.aufirst=Ricardo&rft.date=2013-07-01&rft.volume=14&rft.issue=7&rft.spage=2265&rft.isbn=&rft.btitle=&rft.title=Geochemistry%2C+Geophysics%2C+Geosystems+-+G3&rft.issn=1525-2027&rft_id=info:doi/10.1002%2Fggge.20152 L2 - http://g-cubed.org LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, 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 - 2014-01-01 N1 - Number of references - 123 N1 - Document feature - illus. incl. 6 tables N1 - Last updated - 2014-05-29 N1 - SubjectsTermNotLitGenreText - alkaline earth metals; Austral Islands; basalts; continental crust; Cook Islands; crust; French Polynesia; heat flow; hot spots; igneous rocks; isotope ratios; isotopes; lead; major elements; mantle; mantle plumes; mass balance; metals; mid-ocean ridges; Nd-144/Nd-143; neodymium; numerical models; ocean floors; ocean-island basalts; Oceania; Pb-206/Pb-204; plate tectonics; Polynesia; radioactive isotopes; rare earths; Sr-87/Sr-86; stable isotopes; strontium; thermochemical properties; trace elements; volcanic rocks; volcanism DO - http://dx.doi.org/10.1002/ggge.20152 ER - TY - JOUR T1 - Northern North Atlantic sea surface height and ocean heat content variability AN - 1492636068; 18960214 AB - The evolution of nearly 20 years of altimetric sea surface height (SSH) is investigated to understand its association with decadal to multidecadal variability of the North Atlantic heat content. Altimetric SSH is dominated by an increase of about 14 cm in the Labrador and Irminger seas from 1993 to 2011, while the opposite has occurred over the Gulf Stream region over the same time period. During the altimeter period the observed 0-700 m ocean heat content (OHC) in the subpolar gyre mirrors the increased SSH by its dominantly positive trend. Over a longer period, 1955-2011, fluctuations in the subpolar OHC reflect Atlantic multidecadal variability (AMV) and can be attributed to advection driven by the wind stress "gyre mode" bringing more subtropical waters into the subpolar gyre. The extended subpolar warming evident in SSH and OHC during the altimeter period represents transition of the AMV from cold to warm phase. In addition to the dominant trend, the first empirical orthogonal function SSH time series shows an abrupt change 2009-2010 reaching a new minimum in 2010. The change coincides with the change in the meridional overturning circulation at 26.5 degree N as observed by the RAPID (Rapid Climate Change) project, and with extreme behavior of the wind stress gyre mode and of atmospheric blocking. While the general relationship between northern warming and Atlantic meridional overturning circulation (AMOC) volume transport remains undetermined, the meridional heat and salt transport carried by AMOC's arteries are rich with decade-to-century timescale variability. Key Points * Subpolar ocean heat content dominated by Atlantic Multidecadal Variability (AMV) * Subpolar altimetric SSH trend expresses cold to warm phase transition of AMV JF - Journal of Geophysical Research. C. Oceans AU - Haekkinen, Sirpa AU - Rhines, Peter B AU - Worthen, Denise L AD - NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2013/07// PY - 2013 DA - July 2013 SP - 3670 EP - 3678 PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD United Kingdom VL - 118 IS - 7 SN - 2169-9275, 2169-9275 KW - Meteorological & Geoastrophysical Abstracts; Sustainability Science Abstracts; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - multidecadal variability KW - sea surface height KW - ocean heat content KW - Meridional overturning circulation KW - Wind stress KW - Salt transport KW - Blood circulation KW - Climate change KW - Empirical orthogonal functions KW - Time series analysis KW - Volume transport KW - Advection KW - ANE, Irminger Sea KW - Altimeters KW - ANW, Canada, Newfoundland and Labrador, Labrador KW - ANE, North Atlantic, Subpolar Gyre KW - Wind variability KW - Heat transport KW - Marine KW - Gyres KW - A, Atlantic, Gulf Stream KW - Gulf Stream KW - Stress KW - Ocean circulation KW - AN, North Atlantic KW - Heat content KW - Salts KW - Oceans KW - Salt advection KW - O 2010:Physical Oceanography KW - M2 551.583:Variations (551.583) KW - M3 1010:Issues in Sustainable Development KW - Q2 09163:Air-water boundary layer UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1492636068?accountid=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=Journal+of+Geophysical+Research.+C.+Oceans&rft.atitle=Northern+North+Atlantic+sea+surface+height+and+ocean+heat+content+variability&rft.au=Haekkinen%2C+Sirpa%3BRhines%2C+Peter+B%3BWorthen%2C+Denise+L&rft.aulast=Haekkinen&rft.aufirst=Sirpa&rft.date=2013-07-01&rft.volume=118&rft.issue=7&rft.spage=3670&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research.+C.+Oceans&rft.issn=21699275&rft_id=info:doi/10.1002%2Fjgrc.20268 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-01-01 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Wind stress; Blood circulation; Salt advection; Climate change; Altimeters; Ocean circulation; Heat content; Volume transport; Heat transport; Meridional overturning circulation; Salt transport; Gulf Stream; Empirical orthogonal functions; Time series analysis; Wind variability; Advection; Salts; Oceans; Gyres; Stress; ANE, Irminger Sea; A, Atlantic, Gulf Stream; ANW, Canada, Newfoundland and Labrador, Labrador; AN, North Atlantic; ANE, North Atlantic, Subpolar Gyre; Marine DO - http://dx.doi.org/10.1002/jgrc.20268 ER - TY - JOUR T1 - A global topographic map of Titan AN - 1442375915; 2013-080008 JF - Icarus AU - Lorenz, Ralph D AU - Stiles, Bryan W AU - Aharonson, Oded AU - Lucas, Antoine AU - Hayes, Alexander G AU - Kirk, Randolph L AU - Zebker, Howard A AU - Turtle, Elizabeth P AU - Neish, Catherine D AU - Stofan, Ellen R AU - Barnes, Jason W Y1 - 2013/07// PY - 2013 DA - July 2013 SP - 367 EP - 377 PB - Elsevier, New York, NY VL - 225 IS - 1 SN - 0019-1035, 0019-1035 KW - icy satellites KW - splines KW - radar methods KW - mapping KW - interpolation KW - altimetry KW - highlands KW - plateaus KW - Cassini-Huygens Mission KW - topography KW - SAR KW - surface features KW - fluvial features KW - basins KW - Titan Satellite KW - latitude KW - algorithms KW - satellites KW - Ligeia Mare KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442375915?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+global+topographic+map+of+Titan&rft.au=Lorenz%2C+Ralph+D%3BStiles%2C+Bryan+W%3BAharonson%2C+Oded%3BLucas%2C+Antoine%3BHayes%2C+Alexander+G%3BKirk%2C+Randolph+L%3BZebker%2C+Howard+A%3BTurtle%2C+Elizabeth+P%3BNeish%2C+Catherine+D%3BStofan%2C+Ellen+R%3BBarnes%2C+Jason+W&rft.aulast=Lorenz&rft.aufirst=Ralph&rft.date=2013-07-01&rft.volume=225&rft.issue=1&rft.spage=367&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.04.002 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 29 N1 - PubXState - NY N1 - Document feature - illus. incl. sketch maps N1 - SuppNotes - Supplemental information/data is available in the online version of this article N1 - Last updated - 2013-10-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - algorithms; altimetry; basins; Cassini-Huygens Mission; fluvial features; highlands; icy satellites; interpolation; latitude; Ligeia Mare; mapping; plateaus; radar methods; SAR; satellites; splines; surface features; Titan Satellite; topography DO - http://dx.doi.org/10.1016/j.icarus.2013.04.002 ER - TY - JOUR T1 - The persistent activity of Jupiter-family comets at 3-7 AU AN - 1442375671; 2013-080016 JF - Icarus AU - Kelley, Michael S AU - Fernandez, Yanga R AU - Licandro, Javier AU - Lisse, Carey M AU - Reach, William T AU - A'Hearn, Michael F AU - Bauer, James AU - Campins, Humberto AU - Fitzsimmons, Alan AU - Groussin, Olivier AU - Lamy, Philippe L AU - Lowry, Stephen C AU - Meech, Karen J AU - Pittichova, Jana AU - Snodgrass, Colin AU - Toth, Imre AU - Weaver, Harold A Y1 - 2013/07// PY - 2013 DA - July 2013 SP - 475 EP - 494 PB - Elsevier, New York, NY VL - 225 IS - 1 SN - 0019-1035, 0019-1035 KW - Spitzer Space Telescope KW - orbits KW - Survey of the Ensemble Physical Properties of Cometary Nuclei KW - comae KW - infrared spectra KW - morphology KW - photometry KW - SEPPCoN KW - comets KW - Jupiter-family comets KW - spectra KW - cometary dust KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442375671?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+persistent+activity+of+Jupiter-family+comets+at+3-7+AU&rft.au=Kelley%2C+Michael+S%3BFernandez%2C+Yanga+R%3BLicandro%2C+Javier%3BLisse%2C+Carey+M%3BReach%2C+William+T%3BA%27Hearn%2C+Michael+F%3BBauer%2C+James%3BCampins%2C+Humberto%3BFitzsimmons%2C+Alan%3BGroussin%2C+Olivier%3BLamy%2C+Philippe+L%3BLowry%2C+Stephen+C%3BMeech%2C+Karen+J%3BPittichova%2C+Jana%3BSnodgrass%2C+Colin%3BToth%2C+Imre%3BWeaver%2C+Harold+A&rft.aulast=Kelley&rft.aufirst=Michael&rft.date=2013-07-01&rft.volume=225&rft.issue=1&rft.spage=475&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.04.012 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 61 N1 - PubXState - NY N1 - Document feature - illus. incl. 6 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2013-10-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - comae; cometary dust; comets; infrared spectra; Jupiter-family comets; morphology; orbits; photometry; SEPPCoN; spectra; Spitzer Space Telescope; Survey of the Ensemble Physical Properties of Cometary Nuclei DO - http://dx.doi.org/10.1016/j.icarus.2013.04.012 ER - TY - JOUR T1 - Knob fields in the Terra Cimmeria/Terra Sirenum region of Mars; stratigraphy, mineralogy and morphology AN - 1442375352; 2013-079995 JF - Icarus AU - Wendt, Lorenz AU - Bishop, Janice L AU - Neukum, Gerhard Y1 - 2013/07// PY - 2013 DA - July 2013 SP - 200 EP - 215 PB - Elsevier, New York, NY VL - 225 IS - 1 SN - 0019-1035, 0019-1035 KW - silicates KW - imagery KW - Noachian KW - Ariadnes Colles KW - Mars KW - Hesperian KW - Compact Reconnaissance Imaging Spectrometer for Mars KW - Amazonian KW - Terra Sirenum KW - HiRISE KW - CRISM KW - valleys KW - mounds KW - Terra Cimmeria KW - Mars Orbiter Camera KW - High Resolution Imaging Science Experiment KW - clay minerals KW - terrestrial planets KW - Gorgonum Chaos KW - aqueous alteration KW - planets KW - Electris Deposit KW - sheet silicates KW - Ma'adim Vallis KW - incised valleys KW - Atlantis Chaos KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442375352?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Knob+fields+in+the+Terra+Cimmeria%2FTerra+Sirenum+region+of+Mars%3B+stratigraphy%2C+mineralogy+and+morphology&rft.au=Wendt%2C+Lorenz%3BBishop%2C+Janice+L%3BNeukum%2C+Gerhard&rft.aulast=Wendt&rft.aufirst=Lorenz&rft.date=2013-07-01&rft.volume=225&rft.issue=1&rft.spage=200&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.03.020 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 56 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table, sketch maps N1 - Last updated - 2013-10-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - Amazonian; aqueous alteration; Ariadnes Colles; Atlantis Chaos; clay minerals; Compact Reconnaissance Imaging Spectrometer for Mars; CRISM; Electris Deposit; Gorgonum Chaos; Hesperian; High Resolution Imaging Science Experiment; HiRISE; imagery; incised valleys; Ma'adim Vallis; Mars; Mars Orbiter Camera; mounds; Noachian; planets; sheet silicates; silicates; Terra Cimmeria; Terra Sirenum; terrestrial planets; valleys DO - http://dx.doi.org/10.1016/j.icarus.2013.03.020 ER - TY - JOUR T1 - Texture-specific isotopic compositions in 3.4 Gyr old organic matter support selective preservation in cell-like structures AN - 1442374983; 2013-081451 AB - Abundant cell-like organic structures have been proposed as microfossils in Paleoarchean (3.2-3.5 Ga) cherts. The wide range of delta (super 13) C (sub org) values recorded in Paleoarchean organic matter (OM), including some of these possible microfossils, is difficult to reconcile with the smaller range observed in living cells and younger microfossils. Metamorphic and metasomatic effects on delta (super 13) C (sub org) have been recognized in Paleoarchean rocks, but have never been assessed for cell-like structures. Migrations of OM, of which the textures can mimic microfossils, are also difficult to constrain in Paleoarchean cherts that are often cut by submillimeter- to meter-scale OM-bearing veins. Here, we present the results of petrography, Raman microspectroscopy, and in situ analyses of delta (super 13) C (sub org) and H/C using secondary ion mass spectrometry (SIMS) of diverse organic microstructures, including possible microfossils, from two localities of the 3.4-billion-year-old Strelley Pool Formation (Western Australia, SPF). For the first time, we show that the wide range of delta (super 13) C (sub org) values recorded at the micrometer scale correlates with specific OM-texture types in the SPF. The cross-cutting texture and lower structural order show that the OM in micro-veins of one sample from the Goldsworthy greenstone belt (WF4) post-dates all other OM-texture types. Possible microfossils (spheres, lenses), clots and micrometer-scale globules all show a higher structural order reached during peak metamorphism. Other than late micro-veins, textures indicative of OM migration beyond the millimeter-scale are absent; hence the source of clots, lenses, spheres and globules is indigenous to the cherts. A weak positive relation between delta (super 13) C (sub org) and H/C demonstrates that the 10 ppm range in delta (super 13) C (sub org) recorded in indigenous OM is not metamorphic or metasomatic in origin. Texture-specific isotopic compositions strongly argue against fully abiotic OM synthesis. Spherical cell-like structures have distinct delta (super 13) C (sub org) values compared to all other organic textures: their distribution peaks between -35 ppm and -36 ppm in WF4 and averages -35.7 ppm in sample PAN1-1A from the Panorama greenstone belt. Lenses are composed of a network of nanoscale OM with a relatively high H/C and delta (super 13) C (sub org) (average -32 ppm in WF4), and include globules with lower H/C and delta (super 13) C (sub org) down to -40 ppm. Similar globules also appear as isolated clusters. In both WF4 and PAN1-1A, delta (super 13) C (sub org) of OM clots shows a bimodal distribution, the lower values overlapping with those of lenses. These heterogeneities can be explained by different carbon-fixation metabolisms, e.g. photosynthetic high delta (super 13) C (sub org) lenses versus methanogenic low delta (super 13) C (sub org) spheres. Alternatively, heterogeneities can be explained by selective diagenetic preservation of the distinct isotopic fractionations inherited from different precursor biomolecules. Selective preservation is supported by (i) coupled delta (super 13) C (sub org) -H/C heterogeneities, (ii) the delta (super 13) C (sub org) differences between cell-like structures and recondensed clots, (iii) internal isotopic heterogeneities in SPF lenses similar to heterogeneities in modern and fossil cells. These results support the interpretation of biogenicity of morphologically cellular structures in the SPF. Abstract Copyright (2013) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Lepot, Kevin AU - Williford, Kenneth H AU - Ushikubo, Takayuki AU - Sugitani, Kenichiro AU - Mimura, Koichi AU - Spicuzza, Michael J AU - Valley, John W Y1 - 2013/07/01/ PY - 2013 DA - 2013 Jul 01 SP - 66 EP - 86 PB - Elsevier, New York, NY VL - 112 SN - 0016-7037, 0016-7037 KW - ion probe data KW - isotopes KW - Western Australia KW - metamorphic belts KW - mass spectra KW - Strelley Pool Formation KW - Paleoarchean KW - stable isotopes KW - paleontology KW - sedimentary rocks KW - carbon KW - metamorphic rocks KW - metasedimentary rocks KW - Australia KW - Archean KW - spectra KW - chemical composition KW - sedimentary structures KW - chemically precipitated rocks KW - Precambrian KW - Australasia KW - textures KW - isotope ratios KW - biogenic structures KW - biochemistry KW - C-13/C-12 KW - stromatolites KW - organic compounds KW - greenstone belts KW - Raman spectra KW - chert KW - Goldsworthy Belt KW - preservation KW - microfossils KW - metasomatic rocks KW - 08:General paleontology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442374983?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Texture-specific+isotopic+compositions+in+3.4+Gyr+old+organic+matter+support+selective+preservation+in+cell-like+structures&rft.au=Lepot%2C+Kevin%3BWilliford%2C+Kenneth+H%3BUshikubo%2C+Takayuki%3BSugitani%2C+Kenichiro%3BMimura%2C+Koichi%3BSpicuzza%2C+Michael+J%3BValley%2C+John+W&rft.aulast=Lepot&rft.aufirst=Kevin&rft.date=2013-07-01&rft.volume=112&rft.issue=&rft.spage=66&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2013.03.004 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2013-01-01 N1 - Number of references - 126 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Includes appendices N1 - Last updated - 2013-10-17 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - Archean; Australasia; Australia; biochemistry; biogenic structures; C-13/C-12; carbon; chemical composition; chemically precipitated rocks; chert; Goldsworthy Belt; greenstone belts; ion probe data; isotope ratios; isotopes; mass spectra; metamorphic belts; metamorphic rocks; metasedimentary rocks; metasomatic rocks; microfossils; organic compounds; Paleoarchean; paleontology; Precambrian; preservation; Raman spectra; sedimentary rocks; sedimentary structures; spectra; stable isotopes; Strelley Pool Formation; stromatolites; textures; Western Australia DO - http://dx.doi.org/10.1016/j.gca.2013.03.004 ER - TY - JOUR T1 - Deriving chemical trends from thermal infrared spectra of weathered basalt; implications for remotely determining chemical trends on Mars AN - 1442374923; 2013-080037 JF - Icarus AU - Rampe, Elizabeth B AU - Kraft, Michael D AU - Sharp, Thomas G Y1 - 2013/07// PY - 2013 DA - July 2013 SP - 749 EP - 762 PB - Elsevier, New York, NY VL - 225 IS - 1 SN - 0019-1035, 0019-1035 KW - silicates KW - calcium KW - volcanic rocks KW - X-ray diffraction data KW - igneous rocks KW - thermal infrared spectra KW - weathering rinds KW - Mars KW - Baynton Australia KW - infrared spectra KW - whole rock KW - weathered materials KW - basalts KW - X-ray fluorescence spectra KW - Australia KW - spectra KW - chemical composition KW - chemical weathering KW - alkaline earth metals KW - Australasia KW - alkali metals KW - sodium KW - weathering KW - terrestrial planets KW - aqueous alteration KW - planets KW - metals KW - potassium KW - parent materials KW - Mars Global Surveyor Program KW - terrestrial comparison KW - sheet silicates KW - 04:Extraterrestrial geology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442374923?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Deriving+chemical+trends+from+thermal+infrared+spectra+of+weathered+basalt%3B+implications+for+remotely+determining+chemical+trends+on+Mars&rft.au=Rampe%2C+Elizabeth+B%3BKraft%2C+Michael+D%3BSharp%2C+Thomas+G&rft.aulast=Rampe&rft.aufirst=Elizabeth&rft.date=2013-07-01&rft.volume=225&rft.issue=1&rft.spage=749&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.05.005 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 66 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2013-10-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - alkali metals; alkaline earth metals; aqueous alteration; Australasia; Australia; basalts; Baynton Australia; calcium; chemical composition; chemical weathering; igneous rocks; infrared spectra; Mars; Mars Global Surveyor Program; metals; parent materials; planets; potassium; sheet silicates; silicates; sodium; spectra; terrestrial comparison; terrestrial planets; thermal infrared spectra; volcanic rocks; weathered materials; weathering; weathering rinds; whole rock; X-ray diffraction data; X-ray fluorescence spectra DO - http://dx.doi.org/10.1016/j.icarus.2013.05.005 ER - TY - JOUR T1 - Radiometric comparison of Mars Climate Sounder and Thermal Emission Spectrometer measurements AN - 1442374526; 2013-079980 JF - Icarus AU - Bandfield, Joshua L AU - Wolff, Michael J AU - Smith, Michael D AU - Schofield, John T AU - McCleese, Daniel J Y1 - 2013/07// PY - 2013 DA - July 2013 SP - 28 EP - 39 PB - Elsevier, New York, NY VL - 225 IS - 1 SN - 0019-1035, 0019-1035 KW - albedo KW - thermal infrared spectra KW - Mars KW - calibration KW - temperature KW - infrared spectra KW - brightness KW - errors KW - Thermal Emission Spectrometer KW - thermal emission KW - spectra KW - dust storms KW - surface properties KW - precision KW - Mars Climate Sounder KW - atmosphere KW - Mars Reconnaissance Orbiter KW - emissivity KW - terrestrial planets KW - planets KW - aerosols KW - latitude KW - corrections KW - accuracy KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442374526?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Radiometric+comparison+of+Mars+Climate+Sounder+and+Thermal+Emission+Spectrometer+measurements&rft.au=Bandfield%2C+Joshua+L%3BWolff%2C+Michael+J%3BSmith%2C+Michael+D%3BSchofield%2C+John+T%3BMcCleese%2C+Daniel+J&rft.aulast=Bandfield&rft.aufirst=Joshua&rft.date=2013-07-01&rft.volume=225&rft.issue=1&rft.spage=28&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.03.007 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 48 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2013-10-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - accuracy; aerosols; albedo; atmosphere; brightness; calibration; corrections; dust storms; emissivity; errors; infrared spectra; latitude; Mars; Mars Climate Sounder; Mars Reconnaissance Orbiter; planets; precision; spectra; surface properties; temperature; terrestrial planets; thermal emission; Thermal Emission Spectrometer; thermal infrared spectra DO - http://dx.doi.org/10.1016/j.icarus.2013.03.007 ER - TY - JOUR T1 - Exploring the effectiveness of an Internet-based program for reducing caregiver distress using the iCare Stress Management e-Training Program AN - 1438665522; 201321249 AB - Objective: Determine if the online iCare Stress Management e-Training Program reduces stress, bother, depression, and poor life quality for dementia family caregivers (CGs). Method: CGs (N = 150) were randomly assigned to the iCare Condition (ICC) or to the Education/Information-Only Condition (EOC) for a 3-month period. Change in self-report measures of stress (PSS) (primary outcome), caregiver bother(RMBPC), depression (CES-D), and quality of life (PQOL) (secondary outcomes) was determined, along with usage of new information in one's own caregiving. Results: A mixed ANOVA revealed that change in perceived stress was significant for the ICC but not the EOC (p = .017). Changes in the other measures were not significant. More caregivers in the ICC used the materials in their own caregiving situation than those in the EOC. Roughly one-third of the caregivers enrolled in the study dropped prior to completion. Conclusion: Results are promising, but the high dropout is a concern. Future efforts to improve dropout rate and increase participant engagement are warranted. To our knowledge, this is the first attempt to present an evidence-based intervention for CGs via the Internet. Adapted from the source document. JF - Aging & Mental Health AU - Kajiyama, Bruno AU - Thompson, Larry W AU - Eto-Iwase, Tamiko AU - Yamashita, Mio AU - Di Mario, John AU - Marian Tzuang, Yuan AU - Gallagher-Thompson, Dolores AD - Photozig, Inc, NASA Research Park, Moffett Field, CA, 94035-0128, USA Y1 - 2013/07// PY - 2013 DA - July 2013 SP - 544 EP - 554 PB - Taylor & Francis, Abingdon UK VL - 17 IS - 5 SN - 1360-7863, 1360-7863 KW - Depression KW - Dropping out KW - Caretaker syndrome KW - Stress management KW - Internet KW - Carers KW - article UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1438665522?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aassia&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Aging+%26+Mental+Health&rft.atitle=Exploring+the+effectiveness+of+an+Internet-based+program+for+reducing+caregiver+distress+using+the+iCare+Stress+Management+e-Training+Program&rft.au=Kajiyama%2C+Bruno%3BThompson%2C+Larry+W%3BEto-Iwase%2C+Tamiko%3BYamashita%2C+Mio%3BDi+Mario%2C+John%3BMarian+Tzuang%2C+Yuan%3BGallagher-Thompson%2C+Dolores&rft.aulast=Kajiyama&rft.aufirst=Bruno&rft.date=2013-07-01&rft.volume=17&rft.issue=5&rft.spage=544&rft.isbn=&rft.btitle=&rft.title=Aging+%26+Mental+Health&rft.issn=13607863&rft_id=info:doi/10.1080%2F13607863.2013.775641 LA - English DB - Applied Social Sciences Index & Abstracts (ASSIA) N1 - Date revised - 2013-10-01 N1 - Last updated - 2016-09-27 N1 - CODEN - AMHTFD N1 - SubjectsTermNotLitGenreText - Caretaker syndrome; Stress management; Dropping out; Internet; Carers; Depression DO - http://dx.doi.org/10.1080/13607863.2013.775641 ER - TY - JOUR T1 - Petrogenetic association of the oldest lunar basalts; combined Rb-Sr isotopic and trace element constraints AN - 1429845278; 2013-069295 AB - We report a new radiometric Rb-Sr age determination of 4.03+ or -0.04 Ga for high-Al basaltic clast 14321,1353, which is a Group B Apollo 14 high-Al basalt based on its whole-rock incompatible-trace-element chemistry. In addition, available literature Rb-Sr isotope data for Apollo 14 high-Al basalts were reprocessed using the same decay constant and data reduction protocol as used for sample 14321,1353. The Rb-Sr isotopic ages of high-Al basalts range from 4.31+ or -0.17 to 3.93+ or -0.06 Ga. The trace element and Rb-Sr isotopic compositions of high-Al basalts are distinct from those of Apollo 14 aluminous impact melts that crystallized at 3.86+ or -0.01 Ga. The Rb-Sr isotope systematics, coupled with incompatible-trace-element data are consistent with the parental melts of Apollo 14 high-Al basalts being derived from sources consisting of primitive crystallization products of the lunar magma ocean that were variably metasomatized by late-stage KREEP-rich fluids. Our new Rb-Sr isotopic age for 14321,1353 suggests that the KREEP metasomatism must occur in the lunar mantle no later than 4.03+ or -0.04 Ga. Collectively, the Apollo 14 high-Al basalts represent the earliest known volcanic products from the Moon and place a time constraint on the formation of the high-Al basalt source through the crystallization of the lunar magma ocean. Abstract Copyright (2013) Elsevier, B.V. JF - Earth and Planetary Science Letters AU - Hui, Hejiu AU - Neal, Clive R AU - Shih, Chi-Yu AU - Nyquist, Laurence E Y1 - 2013/07/01/ PY - 2013 DA - 2013 Jul 01 SP - 150 EP - 159 PB - Elsevier, Amsterdam VL - 373 SN - 0012-821X, 0012-821X KW - volcanic rocks KW - isotopes KW - igneous rocks KW - Apollo Program KW - metasomatism KW - melts KW - Rb/Sr KW - impact melts KW - dates KW - mixing KW - basalts KW - absolute age KW - trace elements KW - Hadean KW - magma oceans KW - Precambrian KW - Moon KW - incompatible elements KW - clasts KW - Sample 14321 KW - lunar samples KW - crystallization KW - Apollo 14 KW - high-aluminum basalts KW - 03:Geochronology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1429845278?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Petrogenetic+association+of+the+oldest+lunar+basalts%3B+combined+Rb-Sr+isotopic+and+trace+element+constraints&rft.au=Hui%2C+Hejiu%3BNeal%2C+Clive+R%3BShih%2C+Chi-Yu%3BNyquist%2C+Laurence+E&rft.aulast=Hui&rft.aufirst=Hejiu&rft.date=2013-07-01&rft.volume=373&rft.issue=&rft.spage=150&rft.isbn=&rft.btitle=&rft.title=Earth+and+Planetary+Science+Letters&rft.issn=0012821X&rft_id=info:doi/10.1016%2Fj.epsl.2013.04.034 L2 - http://www.sciencedirect.com/science/journal/0012821X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2013-01-01 N1 - Number of references - 76 N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Supplemental information/data is available in the online version of this article N1 - Last updated - 2013-09-05 N1 - CODEN - EPSLA2 N1 - SubjectsTermNotLitGenreText - absolute age; Apollo 14; Apollo Program; basalts; clasts; crystallization; dates; Hadean; high-aluminum basalts; igneous rocks; impact melts; incompatible elements; isotopes; lunar samples; magma oceans; melts; metasomatism; mixing; Moon; Precambrian; Rb/Sr; Sample 14321; trace elements; volcanic rocks DO - http://dx.doi.org/10.1016/j.epsl.2013.04.034 ER - TY - JOUR T1 - Probability of Hypobaric Decompression Sickness Including Extreme Exposures AN - 1419366312; 18291877 AB - Introduction: The fitting of probabilistic decompression sickness (DCS) models is more effective when data encompass a wide range of DCS incidence. We obtained such data from the Air Force Research Laboratory Altitude Decompression Sickness Research Database. The data are results from 29 tests comprising 708 human altitude chamber exposures (536 men and 172 women). There were 340 DCS outcomes with per-test DCS incidence ranging from 0 to 88%. The tests were characterized by direct ascent at a rate of 5000 ft upsilon . min(-1) (1524 m upsilon . min(-1)) to a range of altitudes (226 to 378 mmHg) for 4 h after prebreathe times of varying length and with varying degrees of physical activity while at altitude. Methods: Logistic regression was used to develop an expression for the probability of DCS [P(DCS)] using the Hill equation with decompression dose as the main predictor. Here, decompression dose is defined in terms of either the tissue ratio (TR) or a bubble growth index (BGI). Other predictors in the model were gender and peak exercise intensity at altitude. Results: All three predictors (decompression dose, gender, and exercise intensity) were important contributions to the model for P(DCS). Discussion: Higher TR or BGI, male gender, and higher exercise intensity at altitude all increased the modeled decompression dose. Using either TR or BGI to define decompression dose provided comparable results, suggesting that a simpleTR is adequate for simple altitude exposures as an abstraction of the true decompression dose. The model is primarily heuristic and limits estimates of P(DCS) to only a 4-h exposure. JF - Aviation, Space, and Environmental Medicine AU - Conkin, Johnny AU - Gernhardt, Michael L AU - Abercromby, Andrew F AU - Feiveson, Alan H AD - Universities Space Research Association, 3600 Bay Area Boulevard, Houston, TX 77058-2769, johnny.conkin-l@nasa.gov Y1 - 2013/07// PY - 2013 DA - Jul 2013 SP - 661 EP - 668 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 7 SN - 0095-6562, 0095-6562 KW - Health & Safety Science Abstracts KW - Altitude KW - Physical activity KW - Gender KW - Hills KW - H 2000:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1419366312?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=Probability+of+Hypobaric+Decompression+Sickness+Including+Extreme+Exposures&rft.au=Conkin%2C+Johnny%3BGernhardt%2C+Michael+L%3BAbercromby%2C+Andrew+F%3BFeiveson%2C+Alan+H&rft.aulast=Conkin&rft.aufirst=Johnny&rft.date=2013-07-01&rft.volume=84&rft.issue=7&rft.spage=661&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/10.3357%2FASEM.3506.2013 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-08-01 N1 - Number of references - 18 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Altitude; Physical activity; Gender; Hills DO - http://dx.doi.org/10.3357/ASEM.3506.2013 ER - TY - JOUR T1 - Protection from Carcinogenic Effects of Space Radiation AN - 1419362075; 18291890 AB - Radiation-induced carcinogenesis caused by galactic-cosmic and solar radiation is a major risk for human exploration spaceflight. Danger exists from both direct hits to cells by high-energy particles, from which most cells do not survive, and from secondary radiation resulting from direct hits on physical barriers, including tissue, which causes mutations and elevates oxidative stress, increasing the risk of cancer. Thus, it is necessary to fully understand the risk to crewmembers from this radiation, which will require the development of tools and techniques for conducting research in a manner that realistically represents the situation of astronauts in the space environment. Appropriate tools must also be available for developing and testing effective countermeasures. The research described in this report addresses those needs. JF - Aviation, Space, and Environmental Medicine AU - Frey, M A AD - NASA's Human Research Program Office and Space Medicine Y1 - 2013/07// PY - 2013 DA - Jul 2013 SP - 748 EP - 749 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 7 SN - 0095-6562, 0095-6562 KW - Health & Safety Science Abstracts KW - Oxidative stress KW - Carcinogenicity KW - Carcinogenesis KW - Particulates KW - Solar radiation KW - Mutation KW - Cancer KW - H 2000:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1419362075?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=Protection+from+Carcinogenic+Effects+of+Space+Radiation&rft.au=Frey%2C+M+A&rft.aulast=Frey&rft.aufirst=M&rft.date=2013-07-01&rft.volume=84&rft.issue=7&rft.spage=748&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/10.3357%2FASEM.3572.2013 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-08-01 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Carcinogenicity; Oxidative stress; Carcinogenesis; Particulates; Solar radiation; Mutation; Cancer DO - http://dx.doi.org/10.3357/ASEM.3572.2013 ER - TY - JOUR T1 - Intensification of North American Megadroughts through Surface and Dust Aerosol Forcing* AN - 1412561588; 18248134 AB - Tree-ring-based reconstructions of the Palmer drought severity index (PDSI) indicate that, during the Medieval Climate Anomaly (MCA), the central plains of North America experienced recurrent periods of drought spanning decades or longer. These megadroughts had exceptional persistence compared to more recent events, but the causes remain uncertain. The authors conducted a suite of general circulation model experiments to test the impact of sea surface temperature (SST) and land surface forcing on the MCA megadroughts over the central plains. The land surface forcing is represented as a set of dune mobilization boundary conditions, derived from available geomorphological evidence and modeled as increased bare soil area and a dust aerosol source (32 degree -44 degree N, 105 degree -95 degree W). In the experiments, cold tropical Pacific SST forcing suppresses precipitation over the central plains but cannot reproduce the overall drying or persistence seen in the PDSI reconstruction. Droughts in the scenario with dust aerosols, however, are amplified and have significantly longer persistence than in other model experiments, more closely matching the reconstructed PDSI. This additional drying occurs because the dust increases the shortwave planetary albedo, reducing energy inputs to the surface and boundary layer. The energy deficit increases atmospheric stability, inhibiting convection and reducing cloud cover and precipitation over the central plains. Results from this study provide the first model-based evidence that dust aerosol forcing and land surface changes could have contributed to the intensity and persistence of the central plains megadroughts, although uncertainties remain in the formulation of the boundary conditions and the future importance of these feedbacks. JF - Journal of Climate AU - Cook, Benjamin I AU - Seager, Richard AU - Miller, Ron L AU - Mason, Joseph A AD - NASA Goddard Institute for Space Studies, New York, and Lamont-Doherty Earth Observatory, Palisades, New York Y1 - 2013/07// PY - 2013 DA - Jul 2013 SP - 4414 EP - 4430 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 26 IS - 13 SN - 0894-8755, 0894-8755 KW - Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Convection KW - Convection development KW - Drought KW - IS, Tropical Pacific KW - Boundary conditions KW - Sea surface temperature anomalies KW - Geomorphology KW - Ocean-atmosphere system KW - Sea surface temperatures KW - Tree ring analysis KW - Droughts KW - Marine KW - North America KW - Atmospheric particulates KW - Aerosols KW - Boundary Conditions KW - Albedo KW - Climates KW - Drying KW - Precipitation KW - Dusts KW - Model Studies KW - General circulation models KW - Eolian dust KW - SW 5010:Network design KW - Q2 09188:Atmospheric chemistry KW - AQ 00006:Sewage KW - M2 551.583:Variations (551.583) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1412561588?accountid=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=Intensification+of+North+American+Megadroughts+through+Surface+and+Dust+Aerosol+Forcing*&rft.au=Cook%2C+Benjamin+I%3BSeager%2C+Richard%3BMiller%2C+Ron+L%3BMason%2C+Joseph+A&rft.aulast=Cook&rft.aufirst=Benjamin&rft.date=2013-07-01&rft.volume=26&rft.issue=13&rft.spage=4414&rft.isbn=&rft.btitle=&rft.title=Journal+of+Climate&rft.issn=08948755&rft_id=info:doi/10.1175%2FJCLI-D-12-00022.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-07-01 N1 - Number of references - 83 N1 - Last updated - 2014-12-11 N1 - SubjectsTermNotLitGenreText - Convection; Atmospheric particulates; Aerosols; Geomorphology; Albedo; Ocean-atmosphere system; Drying; Droughts; Eolian dust; Sea surface temperature anomalies; General circulation models; Convection development; Precipitation; Drought; Tree ring analysis; Sea surface temperatures; Boundary conditions; Boundary Conditions; Climates; Dusts; Model Studies; North America; IS, Tropical Pacific; Marine DO - http://dx.doi.org/10.1175/JCLI-D-12-00022.1 ER - TY - JOUR T1 - Indigo color urine in hemodialysis patient AN - 1412229970 AB - {Figure 1} Urinary tract infection with microbes like Providencia stuartii, Providencia rettgeri, Klebsiella pneumoniae, Proteus mirabilis, Escherichia coli, Morganella morganii, and Pseudomonas aeruginosa can produce the enzyme indoxyl phosphatase. JF - Indian Journal of Nephrology AU - Nasa, P AU - Gupta, A AU - Jain, S AU - Khanal, M Y1 - 2013/07// PY - 2013 DA - Jul 2013 SP - 319 CY - Mumbai PB - Medknow Publications & Media Pvt. Ltd. VL - 23 IS - 4 SN - 09714065 KW - Medical Sciences--Urology And Nephrology KW - Infections KW - Urogenital system KW - Catheters KW - Hemodialysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1412229970?accountid=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+Nephrology&rft.atitle=Indigo+color+urine+in+hemodialysis+patient&rft.au=Nasa%2C+P%3BGupta%2C+A%3BJain%2C+S%3BKhanal%2C+M&rft.aulast=Nasa&rft.aufirst=P&rft.date=2013-07-01&rft.volume=23&rft.issue=4&rft.spage=319&rft.isbn=&rft.btitle=&rft.title=Indian+Journal+of+Nephrology&rft.issn=09714065&rft_id=info:doi/10.4103%2F0971-4065.114494 LA - English DB - ProQuest Central N1 - Copyright - Copyright Medknow Publications & Media Pvt Ltd Jul 2013 N1 - Last updated - 2013-07-25 DO - http://dx.doi.org/10.4103/0971-4065.114494 ER - TY - JOUR T1 - Impact of surface roughness and soil texture on mineral dust emission fluxes modeling AN - 1507180992; 2014-017732 AB - Dust production models (DPM) used to estimate vertical fluxes of mineral dust aerosols over arid regions need accurate data on soil and surface properties. The Laboratoire Inter-Universitaire des Systemes Atmospheriques (LISA) data set was developed for Northern Africa, the Middle East, and East Asia. This regional data set was built through dedicated field campaigns and include, among others, the aerodynamic roughness length, the smooth roughness length of the erodible fraction of the surface, and the dry (undisturbed) soil size distribution. Recently, satellite-derived roughness length and high-resolution soil texture data sets at the global scale have emerged and provide the opportunity for the use of advanced schemes in global models. This paper analyzes the behavior of the ERS satellite-derived global roughness length and the State Soil Geographic data base-Food and Agriculture Organization of the United Nations (STATSGO-FAO) soil texture data set (based on wet techniques) using an advanced DPM in comparison to the LISA data set over Northern Africa and the Middle East. We explore the sensitivity of the drag partition scheme (a critical component of the DPM) and of the dust vertical fluxes (intensity and spatial patterns) to the roughness length and soil texture data sets. We also compare the use of the drag partition scheme to a widely used preferential source approach in global models. Idealized experiments with prescribed wind speeds show that the ERS and STATSGO-FAO data sets provide realistic spatial patterns of dust emission and friction velocity thresholds in the region. Finally, we evaluate a dust transport model for the period of March to July 2011 with observed aerosol optical depths from Aerosol Robotic Network sites. Results show that ERS and STATSGO-FAO provide realistic simulations in the region. Abstract Copyright (2013), American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Atmospheres AU - Menut, Laurent AU - Perez, Carlos AU - Haustein, Karsten AU - Bessagnet, Bertrand AU - Prigent, Catherine AU - Alfaro, Stephane Y1 - 2013/06/27/ PY - 2013 DA - 2013 Jun 27 SP - 6505 EP - 6520 PB - Blackwell Wiley for American Geophysical Union, Washington, DC VL - 118 IS - 12 SN - 2169-897X, 2169-897X KW - soils KW - sediment transport KW - erosion KW - clastic sediments KW - textures KW - roughness KW - friction KW - satellite methods KW - environmental effects KW - models KW - mineral composition KW - transport KW - atmospheric transport KW - dust KW - sediments KW - Africa KW - wind transport KW - Asia KW - remote sensing KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1507180992?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+surface+roughness+and+soil+texture+on+mineral+dust+emission+fluxes+modeling&rft.au=Menut%2C+Laurent%3BPerez%2C+Carlos%3BHaustein%2C+Karsten%3BBessagnet%2C+Bertrand%3BPrigent%2C+Catherine%3BAlfaro%2C+Stephane&rft.aulast=Menut&rft.aufirst=Laurent&rft.date=2013-06-27&rft.volume=118&rft.issue=12&rft.spage=6505&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2Fjgrd.50313 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 - 2014-01-01 N1 - Number of references - 28 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - Africa; Asia; atmospheric transport; clastic sediments; dust; environmental effects; erosion; friction; mineral composition; models; remote sensing; roughness; satellite methods; sediment transport; sediments; soils; textures; transport; wind transport DO - http://dx.doi.org/10.1002/jgrd.50313 ER - TY - JOUR T1 - Forest productivity and water stress in Amazonia: observations from GOSAT chlorophyll fluorescence AN - 1566847198; 20368567 AB - It is unclear to what extent seasonal water stress impacts on plant productivity over Amazonia. Using new Greenhouse gases Observing SATellite (GOSAT) satellite measurements of sun-induced chlorophyll fluorescence, we show that midday fluorescence varies with water availability, both of which decrease in the dry season over Amazonian regions with substantial dry season length, suggesting a parallel decrease in gross primary production (GPP). Using additional SeaWinds Scatterometer onboard QuikSCAT satellite measurements of canopy water content, we found a concomitant decrease in daily storage of canopy water content within branches and leaves during the dry season, supporting our conclusion. A large part (r2 = 0.75) of the variance in observed monthly midday fluorescence from GOSAT is explained by water stress over moderately stressed evergreen forests over Amazonia, which is reproduced by model simulations that include a full physiological representation of photosynthesis and fluorescence. The strong relationship between GOSAT and model fluorescence (r2 = 0.79) was obtained using a fixed leaf area index, indicating that GPP changes are more related to environmental conditions than chlorophyll contents. When the dry season extended to drought in 2010 over Amazonia, midday basin-wide GPP was reduced by 15 per cent compared with 2009. JF - Proceedings of the Royal Society of London, Series B: Biological Sciences AU - Lee, Jung-Eun AU - Frankenberg, Christian AU - van der Tol, Christiaan AU - Berry, Joseph A AU - Guanter, Luis AU - Boyce, CKevin AU - Fisher, Joshua B AU - Morrow, Eric AU - Worden, John R AU - Asefi, Salvi AU - Badgley, Grayson AU - Saatchi, Sassan AD - Jet Propulsion Laboratory, California Institute of Technology, , Pasadena, CA, USA, jung-eun.lee@jpl.nasa.gov Y1 - 2013/06/22/ PY - 2013 DA - 2013 Jun 22 SP - 20130171 PB - Royal Society of London, 6 Carlton House Terrace London SW1Y 5AG United Kingdom VL - 280 IS - 1761 SN - 0962-8452, 0962-8452 KW - Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - chlorophyll fluorescence KW - Amazon KW - water stress KW - drought KW - Chlorophylls KW - Chlorophyll KW - Photosynthesis KW - Climate change KW - Forests KW - Water availability KW - Primary production KW - Models KW - Scatterometers KW - Canopies KW - Droughts KW - Modelling KW - Leaf area KW - Fluorescence KW - Leaves KW - Greenhouse effect KW - Water content KW - Satellites KW - Water stress KW - Greenhouse gases KW - Environmental conditions KW - Dry season KW - O 1070:Ecology/Community Studies KW - Q1 08422:Environmental effects KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1566847198?accountid=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=Proceedings+of+the+Royal+Society+of+London%2C+Series+B%3A+Biological+Sciences&rft.atitle=Forest+productivity+and+water+stress+in+Amazonia%3A+observations+from+GOSAT+chlorophyll+fluorescence&rft.au=Lee%2C+Jung-Eun%3BFrankenberg%2C+Christian%3Bvan+der+Tol%2C+Christiaan%3BBerry%2C+Joseph+A%3BGuanter%2C+Luis%3BBoyce%2C+CKevin%3BFisher%2C+Joshua+B%3BMorrow%2C+Eric%3BWorden%2C+John+R%3BAsefi%2C+Salvi%3BBadgley%2C+Grayson%3BSaatchi%2C+Sassan&rft.aulast=Lee&rft.aufirst=Jung-Eun&rft.date=2013-06-22&rft.volume=280&rft.issue=1761&rft.spage=20130171&rft.isbn=&rft.btitle=&rft.title=Proceedings+of+the+Royal+Society+of+London%2C+Series+B%3A+Biological+Sciences&rft.issn=09628452&rft_id=info:doi/10.1098%2Frspb.2013.0171 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-09-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Chlorophylls; Fluorescence; Climate change; Leaves; Forests; Greenhouse effect; Primary production; Scatterometers; Canopies; Dry season; Environmental conditions; Droughts; Modelling; Leaf area; Chlorophyll; Photosynthesis; Water content; Satellites; Water availability; Models; Water stress; Greenhouse gases DO - http://dx.doi.org/10.1098/rspb.2013.0171 ER - TY - JOUR T1 - Deuterium burning in massive giant planets and low-mass brown dwarfs formed by core-nucleated accretion AN - 1618131662; 2014-086170 AB - Using detailed numerical simulations, we study the formation of bodies near the deuterium-burning limit according to the core-nucleated giant planet accretion scenario. The objects, with heavy-element cores in the range 5-30 M (sub Earth symbol) , are assumed to accrete gas up to final masses of 10-15 Jupiter masses (M (sub Jup) ). After the formation process, which lasts 1-5 Myr and which ends with a "cold-start," low-entropy configuration, the bodies evolve at constant mass up to an age of several Gyr. Deuterium burning via proton capture is included in the calculation, and we determined the mass, M (sub 50) , above which more than 50% of the initial deuterium is burned. This often-quoted borderline between giant planets and brown dwarfs is found to depend only slightly on parameters, such as core mass, stellar mass, formation location, solid surface density in the protoplanetary disk, disk viscosity, and dust opacity. The values for M (sub 50) fall in the range 11.6-13.6 M (sub Jup) , in agreement with previous determinations that do not take the formation process into account. For a given opacity law during the formation process, objects with higher core masses form more quickly. The result is higher entropy in the envelope at the completion of accretion, yielding lower values of M (sub 50) . For masses above M (sub 50) , during the deuterium-burning phase, objects expand and increase in luminosity by one to three orders of magnitude. Evolutionary tracks in the luminosity versus time diagram are compared with the observed position of the companion to Beta Pictoris. Copyright (Copyright) 2013. The American Astronomical Society. All rights reserved. JF - The Astrophysical Journal AU - Bodenheimer, Peter AU - D'Angelo, Gennaro AU - Lissauer, Jack J AU - Fortney, Jonathan J AU - Saumon, Didier Y1 - 2013/06/20/ PY - 2013 DA - 2013 Jun 20 EP - Paper No. 120 PB - IOP Publishing for American Astronomical Society, Bristol VL - 770 IS - 2 SN - 0004-637X, 0004-637X KW - accretion KW - numerical models KW - gaseous phase KW - isotopes KW - protoplanetary disk KW - stable isotopes KW - giant planets KW - mass KW - planets KW - deuterium-burning phase KW - brown dwarfs KW - viscosity KW - stars KW - hydrogen KW - opacity KW - core KW - deuterium KW - luminosity KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1618131662?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+Astrophysical+Journal&rft.atitle=Deuterium+burning+in+massive+giant+planets+and+low-mass+brown+dwarfs+formed+by+core-nucleated+accretion&rft.au=Bodenheimer%2C+Peter%3BD%27Angelo%2C+Gennaro%3BLissauer%2C+Jack+J%3BFortney%2C+Jonathan+J%3BSaumon%2C+Didier&rft.aulast=Bodenheimer&rft.aufirst=Peter&rft.date=2013-06-20&rft.volume=770&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%2F770%2F2%2F120 L2 - http://iopscience.iop.org/0004-637X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data supplied by IOP Publishing Ltd., London, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 54 N1 - Document feature - illus. incl. 5 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-10-30 N1 - SubjectsTermNotLitGenreText - accretion; brown dwarfs; core; deuterium; deuterium-burning phase; gaseous phase; giant planets; hydrogen; isotopes; luminosity; mass; numerical models; opacity; planets; protoplanetary disk; stable isotopes; stars; viscosity DO - http://dx.doi.org/10.1088/0004-637X/770/2/120 ER - TY - JOUR T1 - Issues in dating young rocks from another planet; Martian shergottites AN - 1416685172; 2013-059193 AB - The (super 40) Ar/ (super 39) Ar ages of a group of Martian meteorites called shergottites are systematically older by about 25% or more than ages obtained using Sm-Nd and other radiometric dating methods. The older (super 40) Ar/ (super 39) Ar ages indicate the presence of (super 40) Ar not derived in situ from the radiogenic decay of (super 40) K. The "excess" argon can be associated with several different components, including the Martian atmosphere and mantle. We discuss the sources of Ar in shergottites, and the methods used to separate and identify them. JF - Special Publication - Geological Society of London AU - Park, Jisun AU - Bogard, Donald D AU - Nyquist, Laurence E AU - Herzog, G F Y1 - 2013/06/20/ PY - 2013 DA - 2013 Jun 20 PB - Geological Society of London, London VL - 378 SN - 0305-8719, 0305-8719 KW - Ar/Ar KW - stony meteorites KW - Martian meteorites KW - mantle KW - atmosphere KW - Mars KW - isochrons KW - achondrites KW - terrestrial planets KW - SNC Meteorites KW - planets KW - meteorites KW - shergottite KW - Sm/Nd KW - dates KW - absolute age KW - reconstruction KW - 05B:Petrology of meteorites and tektites KW - 03:Geochronology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1416685172?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Issues+in+dating+young+rocks+from+another+planet%3B+Martian+shergottites&rft.au=Park%2C+Jisun%3BBogard%2C+Donald+D%3BNyquist%2C+Laurence+E%3BHerzog%2C+G+F&rft.aulast=Park&rft.aufirst=Jisun&rft.date=2013-06-20&rft.volume=378&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Special+Publication+-+Geological+Society+of+London&rft.issn=03058719&rft_id=info:doi/10.1144%2FSP378.10 L2 - http://sp.lyellcollection.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from The Geological Society, London, London, United Kingdom N1 - Date revised - 2013-01-01 N1 - Number of references - 103 N1 - Document feature - illus. incl. 3 tables N1 - SuppNotes - Includes appendices; Online First N1 - Last updated - 2013-08-02 N1 - CODEN - GSLSBW N1 - SubjectsTermNotLitGenreText - absolute age; achondrites; Ar/Ar; atmosphere; dates; isochrons; mantle; Mars; Martian meteorites; meteorites; planets; reconstruction; shergottite; Sm/Nd; SNC Meteorites; stony meteorites; terrestrial planets DO - http://dx.doi.org/10.1144/SP378.10 ER - TY - NEWS T1 - Noctilucent Clouds Get an Early Start AN - 1369931009 JF - UPI Space Daily AU - Dr. Tony Phillips for NASA Science News Y1 - 2013/06/20/ PY - 2013 DA - 2013 Jun 20 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369931009?accountid=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=Noctilucent+Clouds+Get+an+Early+Start&rft.au=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2013-06-20&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 - 2013-06-20 ER - TY - NEWS T1 - NASA's IceBridge Mission Contributes to New Map of Antarctica AN - 1368567375 JF - UPI Space Daily AU - George Hale for NASA's Goddard Space Flight Center Y1 - 2013/06/18/ PY - 2013 DA - 2013 Jun 18 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1368567375?accountid=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%27s+IceBridge+Mission+Contributes+to+New+Map+of+Antarctica&rft.au=George+Hale+for+NASA%27s+Goddard+Space+Flight+Center&rft.aulast=George+Hale+for+NASA%27s+Goddard+Space+Flight+Center&rft.aufirst=&rft.date=2013-06-18&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 - 2013-06-18 ER - TY - JOUR T1 - Optical properties of iron silicates in the infrared to millimeter as a function of wavelength and temperature AN - 1618131802; 2014-086167 AB - The Optical Properties of Astronomical Silicates with Infrared Techniques program utilizes multiple instruments to provide spectral data over a wide range of temperatures and wavelengths. Experimental methods include Vector Network Analyzer and Fourier transform spectroscopy transmission, and reflection/scattering measurements. From this data, we can determine the optical parameters for the index of refraction, n, and the absorption coefficient, k. The analysis of the laboratory transmittance data for each sample type is based upon different mathematical models, which are applied to each data set according to their degree of coherence. Presented here are results from iron silicate dust grain analogs, in several sample preparations and at temperatures ranging from 5 to 300 K, across the infrared and millimeter portion of the spectrum (from 2.5 to 10,000 mu m or 4000 to 1 cm (super -1) ). Copyright (Copyright) 2013. The American Astronomical Society. All rights reserved. JF - The Astrophysical Journal AU - Richey, C R AU - Kinzer, R E AU - Cataldo, G AU - Wollack, E J AU - Nuth, Joseph A AU - Benford, D J AU - Silverberg, R F AU - Rinehart, S A Y1 - 2013/06/10/ PY - 2013 DA - 2013 Jun 10 EP - Paper No. 46 PB - IOP Publishing for American Astronomical Society, Bristol VL - 770 IS - 1 SN - 0004-637X, 0004-637X KW - wavelength KW - silicates KW - iron silicates KW - FTIR spectra KW - absorption KW - optical properties KW - spectra KW - refractive index KW - temperature KW - infrared spectra KW - 01B:Mineralogy of silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1618131802?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+Astrophysical+Journal&rft.atitle=Optical+properties+of+iron+silicates+in+the+infrared+to+millimeter+as+a+function+of+wavelength+and+temperature&rft.au=Richey%2C+C+R%3BKinzer%2C+R+E%3BCataldo%2C+G%3BWollack%2C+E+J%3BNuth%2C+Joseph+A%3BBenford%2C+D+J%3BSilverberg%2C+R+F%3BRinehart%2C+S+A&rft.aulast=Richey&rft.aufirst=C&rft.date=2013-06-10&rft.volume=770&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%2F770%2F1%2F46 L2 - http://iopscience.iop.org/0004-637X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data supplied by IOP Publishing Ltd., London, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 45 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2014-10-30 N1 - SubjectsTermNotLitGenreText - absorption; FTIR spectra; infrared spectra; iron silicates; optical properties; refractive index; silicates; spectra; temperature; wavelength DO - http://dx.doi.org/10.1088/0004-637X/770/1/46 ER - TY - JOUR T1 - Flow physics in the turbulent near wake of a flat plate AN - 1534812377; 19926887 AB - The symmetric near wake of a flat plate with a circular trailing edge, exhibiting pronounced shedding of wake vortices, is investigated via a direct numerical simulation. The separating plate boundary layers are turbulent and statistically identical. The present study focuses on the vortical structures, the distribution of phase-averaged velocity statistics and vorticity fluctuations in the near wake. Braid and vortex core regions are investigated via contours of instantaneous vorticity and pressure with an emphasis on the three-dimensionality of near-wake structures. Rib vortices are observed in the braids. The vortex cores are populated with both ribs that wrap themselves around the cores and spanwise-elongated regions of spanwise vorticity near the centres of the cores. Production terms in the transport equations for phase-averaged fluctuating vorticity show that stretching of rib vortices via the phase-averaged strain rate produces significantly less turbulent vorticity than turbulent stretching in the braids and cores. 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 - 2013/06/10/ PY - 2013 DA - 2013 Jun 10 SP - 704 EP - 733 PB - Cambridge University Press, The Edinburgh Building, Cambridge CB2 2RU United Kingdom VL - 724 SN - 0022-1120, 0022-1120 KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Vortices KW - Plate boundaries KW - Wakes KW - Statistics KW - Mathematical models KW - Statistical analysis KW - Velocity KW - Vortexes KW - Strain KW - Fluid Mechanics KW - Fluid mechanics KW - Cores KW - Numerical simulations KW - Vorticity KW - Statistical Analysis KW - Fluctuations KW - Q2 09165:Benthic boundary layer KW - SW 6020:Hydraulics KW - M2 551.511:Mechanics and Thermodynamics of the Atmosphere (551.511) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1534812377?accountid=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=Flow+physics+in+the+turbulent+near+wake+of+a+flat+plate&rft.au=Rai%2C+Man+Mohan&rft.aulast=Rai&rft.aufirst=Man&rft.date=2013-06-10&rft.volume=724&rft.issue=&rft.spage=704&rft.isbn=&rft.btitle=&rft.title=Journal+of+Fluid+Mechanics&rft.issn=00221120&rft_id=info:doi/10.1017%2Fjfm.2013.185 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-06-01 N1 - Last updated - 2016-10-26 N1 - SubjectsTermNotLitGenreText - Fluid mechanics; Wakes; Plate boundaries; Vortices; Mathematical models; Numerical simulations; Vorticity; Statistical analysis; Vortexes; Statistics; Cores; Statistical Analysis; Velocity; Strain; Fluctuations; Fluid Mechanics DO - http://dx.doi.org/10.1017/jfm.2013.185 ER - TY - JOUR T1 - Boron enrichment in Martian clay AN - 1542646552; 2014-047945 AB - We have detected a concentration of boron in martian clay far in excess of that in any previously reported extra-terrestrial object. This enrichment indicates that the chemistry necessary for the formation of ribose, a key component of RNA, could have existed on Mars since the formation of early clay deposits, contemporary to the emergence of life on Earth. Given the greater similarity of Earth and Mars early in their geological history, and the extensive disruption of Earth's earliest mineralogy by plate tectonics, we suggest that the conditions for prebiotic ribose synthesis may be better understood by further Mars exploration. JF - PloS One AU - Stephenson, James D AU - Hallis, Lydia J AU - Nagashima, Kazuhide AU - Freeland, Stephen J Y1 - 2013/06/06/ PY - 2013 DA - 2013 Jun 06 PB - Public Library of Science, San Francisco, CA VL - 2013 IS - e64624 KW - Miller Range Meteorites KW - clay KW - stony meteorites KW - MIL 090030 KW - clastic sediments KW - Martian meteorites KW - astrobiology KW - Mars KW - achondrites KW - life origin KW - electron probe data KW - terrestrial planets KW - planets KW - meteorites KW - X-ray data KW - nucleic acids KW - RNA KW - sediments KW - ribose KW - petrography KW - boron KW - chemical composition KW - SEM data KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1542646552?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=PloS+One&rft.atitle=Boron+enrichment+in+Martian+clay&rft.au=Stephenson%2C+James+D%3BHallis%2C+Lydia+J%3BNagashima%2C+Kazuhide%3BFreeland%2C+Stephen+J&rft.aulast=Stephenson&rft.aufirst=James&rft.date=2013-06-06&rft.volume=2013&rft.issue=e64624&rft.spage=&rft.isbn=&rft.btitle=&rft.title=PloS+One&rft.issn=1932-6203&rft_id=info:doi/10.1371%2Fjournal.pone.0064624 L2 - http://journals.plos.org/plosone/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 42 N1 - PubXState - CA N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2016-09-16 N1 - SubjectsTermNotLitGenreText - achondrites; astrobiology; boron; chemical composition; clastic sediments; clay; electron probe data; life origin; Mars; Martian meteorites; meteorites; MIL 090030; Miller Range Meteorites; nucleic acids; petrography; planets; ribose; RNA; sediments; SEM data; stony meteorites; terrestrial planets; X-ray data DO - http://dx.doi.org/10.1371/journal.pone.0064624 ER - TY - NEWS T1 - Big Weather on Hot Jupiters AN - 1364607595 JF - UPI Space Daily AU - Dr Tony Phillips for NASA Science News Y1 - 2013/06/04/ PY - 2013 DA - 2013 Jun 04 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1364607595?accountid=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=Big+Weather+on+Hot+Jupiters&rft.au=Dr+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2013-06-04&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 - 2013-06-04 ER - TY - CPAPER T1 - A flight research overview of the Waveforms and Sonicboom Perception and Response Project, the National Aeronautics and Space Administration's pilot program for sonic boom community response research T2 - 2013 Joint meeting of the 21st International Congress on Acoustics, 165th Meeting of the Acoustical Society of America and 52nd Meeting of the Canadian Acoustical Association AN - 1412152969; 6227155 JF - 2013 Joint meeting of the 21st International Congress on Acoustics, 165th Meeting of the Acoustical Society of America and 52nd Meeting of the Canadian Acoustical Association AU - Cliatt, Larry AU - Haering, Edward AU - Holtz, Michael AU - Jones, Thomas AU - Waggoner, Erin AU - Wiley, Scott AU - Parham, Ashley AU - Houtas, Franzeska Y1 - 2013/06/02/ PY - 2013 DA - 2013 Jun 02 KW - Flight KW - Perception KW - Reviews KW - Floating barriers UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1412152969?accountid=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=2013+Joint+meeting+of+the+21st+International+Congress+on+Acoustics%2C+165th+Meeting+of+the+Acoustical+Society+of+America+and+52nd+Meeting+of+the+Canadian+Acoustical+Association&rft.atitle=A+flight+research+overview+of+the+Waveforms+and+Sonicboom+Perception+and+Response+Project%2C+the+National+Aeronautics+and+Space+Administration%27s+pilot+program+for+sonic+boom+community+response+research&rft.au=Cliatt%2C+Larry%3BHaering%2C+Edward%3BHoltz%2C+Michael%3BJones%2C+Thomas%3BWaggoner%2C+Erin%3BWiley%2C+Scott%3BParham%2C+Ashley%3BHoutas%2C+Franzeska&rft.aulast=Cliatt&rft.aufirst=Larry&rft.date=2013-06-02&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2013+Joint+meeting+of+the+21st+International+Congress+on+Acoustics%2C+165th+Meeting+of+the+Acoustical+Society+of+America+and+52nd+Meeting+of+the+Canadian+Acoustical+Association&rft.issn=&rft_id=info:doi/ L2 - http://acousticalsociety.org/sites/default/files/docs/full_week.pdf LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-06-30 N1 - Last updated - 2013-07-25 ER - TY - CPAPER T1 - Community response to low-amplitude sonic booms T2 - 2013 Joint meeting of the 21st International Congress on Acoustics, 165th Meeting of the Acoustical Society of America and 52nd Meeting of the Canadian Acoustical Association AN - 1412152724; 6227160 JF - 2013 Joint meeting of the 21st International Congress on Acoustics, 165th Meeting of the Acoustical Society of America and 52nd Meeting of the Canadian Acoustical Association AU - Loubeau, Alexandra Y1 - 2013/06/02/ PY - 2013 DA - 2013 Jun 02 KW - Floating barriers UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1412152724?accountid=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=2013+Joint+meeting+of+the+21st+International+Congress+on+Acoustics%2C+165th+Meeting+of+the+Acoustical+Society+of+America+and+52nd+Meeting+of+the+Canadian+Acoustical+Association&rft.atitle=Community+response+to+low-amplitude+sonic+booms&rft.au=Loubeau%2C+Alexandra&rft.aulast=Loubeau&rft.aufirst=Alexandra&rft.date=2013-06-02&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2013+Joint+meeting+of+the+21st+International+Congress+on+Acoustics%2C+165th+Meeting+of+the+Acoustical+Society+of+America+and+52nd+Meeting+of+the+Canadian+Acoustical+Association&rft.issn=&rft_id=info:doi/ L2 - http://acousticalsociety.org/sites/default/files/docs/full_week.pdf LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-06-30 N1 - Last updated - 2013-07-25 ER - TY - JOUR T1 - The early Martian atmosphere; investigating the role of the dust cycle in the possible maintenance of two stable climate states AN - 1656033932; 2014-000344 AB - Leovy (personal communication, 2007) speculated that two stable climate states on early Mars could have resulted from interactions between the dust and CO (sub 2) cycles. In one state, a highly active dust cycle would prevent atmospheric collapse, and in the second, the collapsed atmosphere would not maintain an active dust cycle. An initial assessment of this idea is presented based on a Mars general circulation model parameter study. A range of global dust loadings, CO (sub 2) ice albedos, and obliquities are investigated to explore conditions in which increasing the atmospheric dust content stabilizes an otherwise unstable atmosphere. We find that dust only stabilizes the atmosphere at high obliquity and when the CO (sub 2) ice albedo is high. Although results suggest that two stable states could have existed on early Mars under limited conditions, further work is needed to know if the conditions necessary are physically plausible. Abstract Copyright (2013), American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Kahre, Melinda A AU - Vines, Sarah K AU - Haberle, Robert M AU - Hollingsworth, Jeffery L Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 1388 EP - 1396 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 6 SN - 2169-9097, 2169-9097 KW - albedo KW - general circulation models KW - obliquity of the ecliptic KW - numerical models KW - clastic sediments KW - cyclic processes KW - atmosphere KW - Mars KW - simulation KW - paleoclimatology KW - carbon dioxide KW - terrestrial planets KW - planets KW - dust KW - sediments KW - climate KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656033932?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+early+Martian+atmosphere%3B+investigating+the+role+of+the+dust+cycle+in+the+possible+maintenance+of+two+stable+climate+states&rft.au=Kahre%2C+Melinda+A%3BVines%2C+Sarah+K%3BHaberle%2C+Robert+M%3BHollingsworth%2C+Jeffery+L&rft.aulast=Kahre&rft.aufirst=Melinda&rft.date=2013-06-01&rft.volume=118&rft.issue=6&rft.spage=1388&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2Fjgre.20099 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 - 2014-01-01 N1 - Number of references - 31 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - albedo; atmosphere; carbon dioxide; clastic sediments; climate; cyclic processes; dust; general circulation models; Mars; numerical models; obliquity of the ecliptic; paleoclimatology; planets; sediments; simulation; terrestrial planets DO - http://dx.doi.org/10.1002/jgre.20099 ER - TY - JOUR T1 - The curious case of Mercury's internal structure AN - 1656033700; 2014-000333 AB - The recent determination of the gravity field of Mercury and new Earth-based radar observations of the planet's spin state afford the opportunity to explore Mercury's internal structure. These observations provide estimates of two measures of the radial mass distribution of Mercury: the normalized polar moment of inertia and the fractional polar moment of inertia of the solid portion of the planet overlying the liquid core. Employing Monte Carlo techniques, we calculate several million models of the radial density structure of Mercury consistent with its radius and bulk density and constrained by these moment of inertia parameters. We estimate that the top of the liquid core is at a radius of 2020 + or - 30 km, the mean density above this boundary is 3380 + or - 200 kg m (super -3) , and the density below the boundary is 6980 + or - 280 kg m (super -3) . We find that these internal structure parameters are robust across a broad range of compositional models for the core and planet as a whole. Geochemical observations of Mercury's surface by MESSENGER indicate a chemically reducing environment that would favor the partitioning of silicon or both silicon and sulfur into the metallic core during core-mantle differentiation. For a core composed of Fe-S-Si materials, the thermodynamic properties at elevated pressures and temperatures suggest that an FeS-rich layer could form at the top of the core and that a portion of it may be presently solid. Abstract Copyright (2013), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Hauck, Steven A, II AU - Margot, Jean-Luc AU - Solomon, Sean C AU - Phillips, Roger J AU - Johnson, Catherine L AU - Lemoine, Frank G AU - Mazarico, Erwan AU - McCoy, Timothy J AU - Padovan, Sebastiano AU - Peale, Stanton J AU - Perry, Mark E AU - Smith, David E AU - Zuber, Maria T Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 1204 EP - 1220 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 6 SN - 2169-9097, 2169-9097 KW - density KW - moment of inertia KW - silicon KW - iron KW - mass KW - gravity field KW - Mercury Planet KW - alloys KW - thermodynamic properties KW - MErcury Surface, Space ENvironment, GEochemistry, and Ranging Mission KW - liquid phase KW - Earth-based observations KW - bulk density KW - Monte Carlo analysis KW - differentiation KW - statistical analysis KW - radar methods KW - terrestrial planets KW - models KW - planets KW - iron sulfides KW - immiscibility KW - metals KW - planetary interiors KW - sulfur KW - MESSENGER Mission KW - sulfides KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656033700?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+curious+case+of+Mercury%27s+internal+structure&rft.au=Hauck%2C+Steven+A%2C+II%3BMargot%2C+Jean-Luc%3BSolomon%2C+Sean+C%3BPhillips%2C+Roger+J%3BJohnson%2C+Catherine+L%3BLemoine%2C+Frank+G%3BMazarico%2C+Erwan%3BMcCoy%2C+Timothy+J%3BPadovan%2C+Sebastiano%3BPeale%2C+Stanton+J%3BPerry%2C+Mark+E%3BSmith%2C+David+E%3BZuber%2C+Maria+T&rft.aulast=Hauck&rft.aufirst=Steven&rft.date=2013-06-01&rft.volume=118&rft.issue=6&rft.spage=1204&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2Fjgre.20091 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 - 2014-01-01 N1 - Number of references - 73 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - alloys; bulk density; density; differentiation; Earth-based observations; gravity field; immiscibility; iron; iron sulfides; liquid phase; mass; Mercury Planet; MErcury Surface, Space ENvironment, GEochemistry, and Ranging Mission; MESSENGER Mission; metals; models; moment of inertia; Monte Carlo analysis; planetary interiors; planets; radar methods; silicon; statistical analysis; sulfides; sulfur; terrestrial planets; thermodynamic properties DO - http://dx.doi.org/10.1002/jgre.20091 ER - TY - JOUR T1 - Perchlorate radiolysis on Mars and the origin of Martian reactivity AN - 1641013314; 2015-000924 JF - Astrobiology AU - Quinn, Richard C AU - Martucci, Hana F H AU - Miller, Stephanie R AU - Bryson, Charles E AU - Grunthaner, Frank J AU - Grunthaner, Paula J Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 515 EP - 520 PB - Mary Ann Liebert, Larchmont, NY VL - 13 IS - 6 SN - 1531-1074, 1531-1074 KW - Mars Phoenix Lander KW - oxygen KW - alanine KW - Mars KW - carbon dioxide KW - reactivity KW - chemical reactions KW - gamma rays KW - amino acids KW - cosmic rays KW - radiolysis KW - soils KW - experimental studies KW - solar energetic particles KW - chlorine dioxide KW - radiation damage KW - atmosphere KW - Viking Program KW - perchlorate KW - terrestrial planets KW - planets KW - organic compounds KW - organic acids KW - hypochlorite KW - Mars Science Laboratory KW - hydrogen peroxide KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641013314?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Astrobiology&rft.atitle=Perchlorate+radiolysis+on+Mars+and+the+origin+of+Martian+reactivity&rft.au=Quinn%2C+Richard+C%3BMartucci%2C+Hana+F+H%3BMiller%2C+Stephanie+R%3BBryson%2C+Charles+E%3BGrunthaner%2C+Frank+J%3BGrunthaner%2C+Paula+J&rft.aulast=Quinn&rft.aufirst=Richard&rft.date=2013-06-01&rft.volume=13&rft.issue=6&rft.spage=515&rft.isbn=&rft.btitle=&rft.title=Astrobiology&rft.issn=15311074&rft_id=info:doi/10.1089%2Fast.2013.0999 L2 - http://www.liebertpub.com/publication.aspx?pub_id=99 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. 1 table N1 - Last updated - 2014-12-31 N1 - SubjectsTermNotLitGenreText - alanine; amino acids; atmosphere; carbon dioxide; chemical reactions; chlorine dioxide; cosmic rays; experimental studies; gamma rays; hydrogen peroxide; hypochlorite; Mars; Mars Phoenix Lander; Mars Science Laboratory; organic acids; organic compounds; oxygen; perchlorate; planets; radiation damage; radiolysis; reactivity; soils; solar energetic particles; terrestrial planets; Viking Program DO - http://dx.doi.org/10.1089/ast.2013.0999 ER - TY - JOUR T1 - Summarizing the First Ten Years of NASA's Aqua Mission AN - 1559703300; 20467919 AB - The Aqua spacecraft was launched on May 4, 2002 with six Earth-observing instruments on board to collect data on a wide variety of Earth system variables. After ten years of on-orbit operations, Aqua has provided data that have contributed to over 2 000 scientific publications, with new results on the Earth's energy budget, trace gases and particulate matter in the atmosphere, vegetation on land and in the oceans, and many aspects of the water cycle, including evaporation and transpiration, water vapor, cloud cover, precipitation, the oceans, sea ice and land ice, snow cover, and soil moisture. Additionally, Aqua data have been used to assist in practical applications ranging from weather forecasting to the deployment of firefighters and the routing of aircraft. Although the six-year design life of the satellite has been successfully completed and exceeded, enough fuel remains on Aqua for approximately another ten years of operations. JF - IEEE Journal on Selected Topics in Applied Earth Observations and Remote Sensing AU - Parkinson, Claire L AD - NASA Goddard Space Flight Center, Greenbelt, Maryland, USA Y1 - 2013/06// PY - 2013 DA - Jun 2013 SP - 1179 EP - 1188 PB - Institute of Electrical and Electronics Engineers, Inc., 3 Park Avenue, 17th Fl New York NY 10016-5997 United States VL - 6 IS - 3 SN - 1939-1404, 1939-1404 KW - Water Resources Abstracts; Aqualine Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Remote Sensing KW - Water Vapor KW - Fuels KW - Remote sensing KW - ice cover KW - Aircraft KW - Fuel KW - Satellite Technology KW - Atmospheric gases KW - Snow KW - Vegetation KW - Routing KW - Suspended particulate matter KW - Transpiration KW - Hydrologic cycle KW - Energy budget KW - Oceans KW - Land ice KW - Q2 09243:Structure, mechanics and thermodynamics KW - SW 5040:Data acquisition KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1559703300?accountid=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=Summarizing+the+First+Ten+Years+of+NASA%27s+Aqua+Mission&rft.au=Parkinson%2C+Claire+L&rft.aulast=Parkinson&rft.aufirst=Claire&rft.date=2013-06-01&rft.volume=6&rft.issue=3&rft.spage=1179&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.2013.2239608 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-09-01 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Atmospheric gases; Snow; Fuels; Remote sensing; Land ice; Suspended particulate matter; Hydrologic cycle; Transpiration; Energy budget; Remote Sensing; Satellite Technology; Water Vapor; Aircraft; Oceans; ice cover; Vegetation; Routing; Fuel DO - http://dx.doi.org/10.1109/JSTARS.2013.2239608 ER - TY - JOUR T1 - The formation of molecular hydrogen from water ice in the lunar regolith by energetic charged particles AN - 1524613933; 2014-000337 AB - On 9 October 2009, the Lunar Crater Observation and Sensing Satellite (LCROSS) mission impacted a spent Centaur rocket into the permanently shadowed region (PSR) within Cabeus crater and detected water vapor and ice, as well as other volatiles, in the ejecta plume. The Lyman Alpha Mapping Project (LAMP), a far ultraviolet (FUV) imaging spectrograph on board the Lunar Reconnaissance Orbiter (LRO), observed this plume as FUV emissions from the fluorescence of sunlight by molecular hydrogen (H (sub 2) ) and other constituents. Energetic charged particles, such as galactic cosmic rays (GCRs) and solar energetic particles (SEPs), can dissociate the molecules in water ice to form H (sub 2) . We examine how much H (sub 2) can be formed by these types of particle radiation interacting with water ice sequestered in the regolith within PSRs, and we assess whether it can account for the H (sub 2) observed by LAMP. To estimate H (sub 2) formation, we use the GCR and SEP radiation dose rates measured by the LRO Cosmic Ray Telescope for the Effects of Radiation (CRaTER). The exposure time of the ice is calculated by considering meteoritic gardening and the penetration depth of the energetic particles. We find that GCRs and SEPs could convert at least 1-7% of the original water molecules into H (sub 2) . Therefore, given the amount of water detected by LCROSS, such particle radiation-induced dissociation of water ice could likely account for a significant percentage (10-100%) of the H (sub 2) measured by LAMP. Abstract Copyright (2013), American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Jordan, A P AU - Stubbs, T J AU - Joyce, C J AU - Schwadron, N A AU - Spence, H E AU - Wilson, J K Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 1257 EP - 1264 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 6 SN - 2169-9097, 2169-9097 KW - Lunar Crater Observation and Sensing Satellite KW - galactic cosmic rays KW - irradiation KW - dissociation KW - impact features KW - Cabeus Crater KW - water vapor KW - Cosmic Ray Telescope for the Effects of Radiation KW - Lunar Reconnaissance Orbiter Mission KW - ice KW - permanently shadowed regions KW - ultraviolet spectra KW - cosmic rays KW - spectra KW - water KW - CRaTER instrument KW - Moon KW - solar energetic particles KW - LCROSS KW - ejecta KW - energetic particles KW - volatiles KW - hydrogen KW - Lyman Alpha Mapping Project KW - impact craters KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1524613933?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+formation+of+molecular+hydrogen+from+water+ice+in+the+lunar+regolith+by+energetic+charged+particles&rft.au=Jordan%2C+A+P%3BStubbs%2C+T+J%3BJoyce%2C+C+J%3BSchwadron%2C+N+A%3BSpence%2C+H+E%3BWilson%2C+J+K&rft.aulast=Jordan&rft.aufirst=A&rft.date=2013-06-01&rft.volume=118&rft.issue=6&rft.spage=1257&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2Fjgre.20095 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 - 2014-01-01 N1 - Number of references - 53 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - Cabeus Crater; Cosmic Ray Telescope for the Effects of Radiation; cosmic rays; CRaTER instrument; dissociation; ejecta; energetic particles; galactic cosmic rays; hydrogen; ice; impact craters; impact features; irradiation; LCROSS; Lunar Crater Observation and Sensing Satellite; Lunar Reconnaissance Orbiter Mission; Lyman Alpha Mapping Project; Moon; permanently shadowed regions; regolith; solar energetic particles; spectra; ultraviolet spectra; volatiles; water; water vapor DO - http://dx.doi.org/10.1002/jgre.20095 ER - TY - JOUR T1 - A canonical response of precipitation characteristics to global warming from CMIP5 models AN - 1524419561; 19770322 AB - In this study, we find from analyses of projections of 14 CMIP5 models a robust, canonical global response in rainfall characteristics to a warming climate. Under a scenario of 1% increase per year of CO sub(2) emission, the model ensemble projects globally more heavy precipitation (+7 plus or minus 2.4%K super(-1)), less moderate precipitation (-2.5 plus or minus 0.6%K super(-1)), more light precipitation (+1.8 plus or minus 1.3%K super(-1)), and increased length of dry (no-rain) periods (+4.7 plus or minus 2.1%K super(-1)). Regionally, a majority of the models project a consistent response with more heavy precipitation over climatologically wet regions of the deep tropics, especially the equatorial Pacific Ocean and the Asian monsoon regions, and more dry periods over the land areas of the subtropics and the tropical marginal convective zones. Our results suggest that increased CO sub(2) emissions induce a global adjustment in circulation and moisture availability manifested in basic changes in global precipitation characteristics, including increasing risks of severe floods and droughts in preferred geographic locations worldwide. Key Points * A canonical rainfall response is found in CMIP-5 models * increased floods and droughts under global warming are connected * Changing rainfall types are more sensitive than total rainfall JF - Geophysical Research Letters AU - Lau, William K-M AU - Wu, H-T AU - Kim, K-M AD - Laboratory for Atmospheres, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 3163 EP - 3169 PB - American Geophysical Union, 2000 Florida Ave., N.W. Washington DC 20009 United States VL - 40 IS - 12 SN - 0094-8276, 0094-8276 KW - Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Risk Abstracts; Sustainability Science Abstracts KW - precipitation KW - global warming KW - Heavy precipitation KW - Rainfall KW - Severe floods KW - Emissions KW - Carbon dioxide emissions KW - Droughts KW - Modelling KW - Dry periods KW - Atmospheric circulation KW - Greenhouse effect KW - Global Warming KW - Model Studies KW - Carbon dioxide KW - Carbon Dioxide KW - Monsoons KW - Climate change KW - Drought KW - Floods KW - IS, Equatorial Pacific KW - Ocean-atmosphere system KW - Climate models KW - Climates KW - Global precipitation KW - Precipitation KW - Oceans KW - Tropical environments KW - Convective activity KW - Asian monsoons KW - Global warming KW - AQ 00001:Water Resources and Supplies KW - SW 0810:General KW - M3 1010:Issues in Sustainable Development KW - M2 551.588:Environmental Influences (551.588) KW - Q2 09261:General KW - R2 23050:Environment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1524419561?accountid=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=A+canonical+response+of+precipitation+characteristics+to+global+warming+from+CMIP5+models&rft.au=Lau%2C+William+K-M%3BWu%2C+H-T%3BKim%2C+K-M&rft.aulast=Lau&rft.aufirst=William&rft.date=2013-06-01&rft.volume=40&rft.issue=12&rft.spage=3163&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2Fgrl.50420 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-05-01 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Climate change; Ocean-atmosphere system; Greenhouse effect; Carbon dioxide; Droughts; Modelling; Monsoons; Dry periods; Heavy precipitation; Climate models; Global precipitation; Atmospheric circulation; Precipitation; Drought; Floods; Convective activity; Severe floods; Asian monsoons; Global warming; Carbon dioxide emissions; Oceans; Rainfall; Tropical environments; Emissions; Climates; Global Warming; Carbon Dioxide; Model Studies; IS, Equatorial Pacific DO - http://dx.doi.org/10.1002/grl.50420 ER - TY - JOUR T1 - Radiative and energetic constraints on the global annual mean atomic oxygen concentration in the mesopause region AN - 1496896135; 19016320 AB - We present a new approach to constrain and validate atomic oxygen (O) concentrations in the mesopause region (~ 80 to ~100 km). In a prior companion paper [Mlynczak et al., ], we presented O-atom concentrations in the mesopause region inferred from measurements of day ozone and night hydroxyl emission rates made by the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument. The approach presented here uses the constraint of global, annual mean energy balance to derive atomic oxygen concentrations, consistent with rates of radiative cooling by carbon dioxide (CO sub(2)) and solar heating due to molecular oxygen (O sub(2)). The mathematical difference between these cooling and heating rates, on a global annual mean basis, effectively constrains the maximum heating rate for the sum of all other processes. The remaining terms, solar heating due to ozone plus a series of exothermic chemical reactions can be expressed as functions of O. This new approach enables a simple mathematical expression that yields the vertical profile of global annual mean "radiatively constrained" atomic oxygen in the mesopause region. The radiatively constrained atomic oxygen depends only on the CO sub(2) cooling rates, O sub(2) solar heating rates, and standard reaction rate coefficients and enthalpies. Radiative cooling and solar heating rates used in these analyses are derived from measurements made by the SABER instrument on the NASA Thermosphere Ionosphere Mesosphere Energetics and Dynamics satellite. There is excellent agreement between the SABER radiatively constrained atomic oxygen and that derived from the SABER ozone and OH emission measurements over most of the mesopause region. Radiatively constrained atomic oxygen represents an upper limit on the global average O-atom concentration in the mesopause region. Key Points * Net radiation constrains mesopause atomic oxygen * New approach to deriving chemical composition * Results allow independent validation of mesopause chemsitry JF - Journal of Geophysical Research. D. Atmospheres AU - Mlynczak, Martin G AU - Hunt, Linda H AU - Mertens, Christopher J AU - Marshall, BThomas AU - Russell, James M AU - Lopez Puertas, Manuel AU - Smith, Anne K AU - Siskind, David E AU - Mast, Jeffrey C AU - Thompson, REarl AU - Gordley, Larry L AD - NASA Langley Research Center, Hampton, Virginia, USA. Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 5796 EP - 5802 PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD United Kingdom VL - 118 IS - 11 SN - 2169-897X, 2169-897X KW - Environmental Engineering Abstracts (EN); CSA / ASCE Civil Engineering Abstracts (CE); Aerospace & High Technology Database (AH) KW - atomic oxygen KW - energy balance KW - radiative constraints KW - mesopause KW - airglow KW - ozone KW - Mesopause KW - Solar heating KW - Cooling rate KW - Constraints KW - Atomic oxygen KW - Carbon dioxide KW - Ozone KW - Mathematical analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1496896135?accountid=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=Journal+of+Geophysical+Research.+D.+Atmospheres&rft.atitle=Radiative+and+energetic+constraints+on+the+global+annual+mean+atomic+oxygen+concentration+in+the+mesopause+region&rft.au=Mlynczak%2C+Martin+G%3BHunt%2C+Linda+H%3BMertens%2C+Christopher+J%3BMarshall%2C+BThomas%3BRussell%2C+James+M%3BLopez+Puertas%2C+Manuel%3BSmith%2C+Anne+K%3BSiskind%2C+David+E%3BMast%2C+Jeffrey+C%3BThompson%2C+REarl%3BGordley%2C+Larry+L&rft.aulast=Mlynczak&rft.aufirst=Martin&rft.date=2013-06-01&rft.volume=118&rft.issue=11&rft.spage=5796&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research.+D.+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2Fjgrd.50400 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-03-01 N1 - Last updated - 2017-01-05 DO - http://dx.doi.org/10.1002/jgrd.50400 ER - TY - JOUR T1 - Atomic oxygen in the mesosphere and lower thermosphere derived from SABER: Algorithm theoretical basis and measurement uncertainty AN - 1496896032; 19016297 AB - Atomic oxygen (O) is a fundamental component in chemical aeronomy of Earth's mesosphere and lower thermosphere region extending from approximately 50km to over 100km in altitude. Atomic oxygen is notoriously difficult to measure, especially with remote sensing techniques from orbiting satellite sensors. It is typically inferred from measurements of the ozone concentration in the day or from measurements of the Meinel band emission of the hydroxyl radical (OH) at night. The Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument on the NASA Thermosphere-Ionosphere-Mesosphere Energetics and Dynamics (TIMED) satellite measures OH emission and ozone for the purpose of determining the O-atom concentration. In this paper, we present the algorithms used in the derivation of day and night atomic oxygen from these measurements. We find excellent consistency between the day and night O-atom concentrations from daily to annual time scales. We also examine in detail the collisional relaxation of the highly vibrationally excited OH molecule at night measured by SABER. Large rate coefficients for collisional removal of vibrationally excited OH molecules by atomic oxygen are consistent with the SABER observations if the deactivation of OH(9) proceeds solely by collisional quenching. An uncertainty analysis of the derived atomic oxygen is also given. Uncertainty in the rate coefficient for recombination of O and molecular oxygen is shown to be the largest source of uncertainty in the derivation of atomic oxygen day or night. Key Points * Algorithm basis for kinetic models to derive atomic oxygen from SABER * Large rates for OH quenching not supported by SABER * Derived atomic oxygen accurate to 25%. Data excellent for chemistry studies JF - Journal of Geophysical Research. D. Atmospheres AU - Mlynczak, Martin G AU - Hunt, Linda A AU - Mast, Jeffrey C AU - Thomas Marshall, B AU - Russell, James M AU - Smith, Anne K AU - Siskind, David E AU - Yee, Jeng-Hwa AU - Mertens, Christopher J AU - Javier Martin-Torres, F AU - Earl Thompson, R AU - Drob, Douglas P AU - Gordley, Larry L AD - NASA Langley Research Center, Hampton, Virginia, USA. Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 5724 EP - 5735 PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD United Kingdom VL - 118 IS - 11 SN - 2169-897X, 2169-897X KW - Environmental Engineering Abstracts (EN); CSA / ASCE Civil Engineering Abstracts (CE); Aerospace & High Technology Database (AH) KW - Atomic oxygen KW - Mesopause KW - Airglow KW - Ozone KW - Energy budget KW - Uncertainty KW - Mathematical models KW - Night KW - Mesosphere KW - Algorithms KW - Excitation KW - Emission UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1496896032?accountid=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=Journal+of+Geophysical+Research.+D.+Atmospheres&rft.atitle=Atomic+oxygen+in+the+mesosphere+and+lower+thermosphere+derived+from+SABER%3A+Algorithm+theoretical+basis+and+measurement+uncertainty&rft.au=Mlynczak%2C+Martin+G%3BHunt%2C+Linda+A%3BMast%2C+Jeffrey+C%3BThomas+Marshall%2C+B%3BRussell%2C+James+M%3BSmith%2C+Anne+K%3BSiskind%2C+David+E%3BYee%2C+Jeng-Hwa%3BMertens%2C+Christopher+J%3BJavier+Martin-Torres%2C+F%3BEarl+Thompson%2C+R%3BDrob%2C+Douglas+P%3BGordley%2C+Larry+L&rft.aulast=Mlynczak&rft.aufirst=Martin&rft.date=2013-06-01&rft.volume=118&rft.issue=11&rft.spage=5724&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research.+D.+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2Fjgrd.50401 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-03-01 N1 - Last updated - 2017-01-05 DO - http://dx.doi.org/10.1002/jgrd.50401 ER - TY - JOUR T1 - Statistical modeling of a former Arctic Ocean ice shelf complex using Antarctic analogies AN - 1464893401; 2013-093643 AB - Geophysical mapping and coring of the central Arctic Ocean seafloor provide evidence for repeated occurrences of ice sheet/ice shelf complexes during previous glacial periods. Several ridges and bathymetric highs shallower than present water depths of approximately 1000m show signs of erosion from deep-drafting (armadas of) icebergs, which originated from thick outlet glaciers and ice shelves. Mapped glacigenic landforms and dates of cored sediments suggest that the largest ice shelf complex was confined to the Amerasian sector of the Arctic Ocean during Marine Isotope Stage (MIS) 6. However, the spatial extent of ice shelves can not be well reconstructed from occasional groundings on bathymetric highs. Therefore, we apply a statistical approach to provide independent support for an extensive MIS 6 ice shelf complex, which previously was inferred only from interpretation of geophysical and geological data. Specifically, we assess whether this ice shelf complex comprises a likely source of the deep-draft icebergs responsible for the mapped scour marks. The statistical modeling is based on exploiting relations between contemporary Antarctic ice shelves and their local physical environments and the assumption that Arctic Ocean MIS6 ice shelves scale similarly. Analyzing ice thickness data along the calving front of contemporary ice shelves, a peak over threshold method is applied to determine sources of deep-drafting icebergs in the Arctic Ocean MIS6 ice shelf complex. This approach is novel to modeling Arctic paleoglacial configurations. Predicted extreme calving front drafts match observed deep-draft iceberg scours if the ice shelf complex is sufficiently large. Abstract Copyright (2013), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Earth Surface AU - Kirchner, N AU - Furrer, R AU - Jakobsson, M AU - Zwally, H J AU - Robbins, J W Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 1105 EP - 1117 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 2 SN - 2169-9003, 2169-9003 KW - glaciation KW - Amerasia Basin KW - mapping KW - ice shelves KW - glaciomarine environment KW - cores KW - Cenozoic KW - bedding plane irregularities KW - multivariate analysis KW - glacial environment KW - thickness KW - Arctic Ocean KW - ocean floors KW - sedimentary structures KW - MIS 6 KW - Quaternary KW - icebergs KW - statistical analysis KW - glaciers KW - glacial features KW - scour marks KW - ice sheets KW - models KW - paleoenvironment KW - Antarctica KW - marine environment KW - calving KW - Pleistocene KW - reconstruction KW - glacial geology KW - bathymetry KW - sea-surface temperature KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1464893401?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Statistical+modeling+of+a+former+Arctic+Ocean+ice+shelf+complex+using+Antarctic+analogies&rft.au=Kirchner%2C+N%3BFurrer%2C+R%3BJakobsson%2C+M%3BZwally%2C+H+J%3BRobbins%2C+J+W&rft.aulast=Kirchner&rft.aufirst=N&rft.date=2013-06-01&rft.volume=118&rft.issue=2&rft.spage=1105&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Earth+Surface&rft.issn=21699003&rft_id=info:doi/10.1002%2Fjgrf.20077 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9011/issues?year=2013 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2013-01-01 N1 - Number of references - 48 N1 - PubXState - DC N1 - Document feature - illus. incl. 5 tables, sketch map N1 - Last updated - 2013-12-05 N1 - SubjectsTermNotLitGenreText - Amerasia Basin; Antarctica; Arctic Ocean; bathymetry; bedding plane irregularities; calving; Cenozoic; cores; glacial environment; glacial features; glacial geology; glaciation; glaciers; glaciomarine environment; ice sheets; ice shelves; icebergs; mapping; marine environment; MIS 6; models; multivariate analysis; ocean floors; paleoenvironment; Pleistocene; Quaternary; reconstruction; scour marks; sea-surface temperature; sedimentary structures; statistical analysis; thickness DO - http://dx.doi.org/10.1002/jgrf.20077 ER - TY - JOUR T1 - Dynamic (in)stability of Thwaites Glacier, West Antarctica AN - 1464893189; 2013-093615 AB - Thwaites Glacier, West Antarctica, has the potential to directly contribute approximately 1 m to sea level and currently is losing mass and thinning rapidly. Here, we report on regional results for the Sea-level Response to Ice Sheet Evolution (SeaRISE) experiments and investigate the impact of i) spatial resolution within existing data sets, ii) grounding-zone processes, and iii) till rheology on the dynamics of this outlet glacier. In addition to the SeaRISE data sets, we use detailed aerogeophysical and satellite data from Thwaites Glacier as input to a coupled ice stream/ice-shelf/ocean-plume model that includes oceanic influences across a several kilometers wide grounding zone suggested by new, high-resolution data. Our results indicate that the ice tongue provides limited stability, and that while future atmospheric warming will likely add mass to the surface of the glacier, strong ice stream stabilization on bedrock highs narrower than the length of the grounding zone may be ephemeral if circulating waters substantially reduce basal resistance and enhance melting beneath grounded ice within this zone. However, we find that stability is significantly enhanced by effectively plastic till beds. Accurate projections of future sea level change relies on correct understanding of the till rheology as well as local basal processes near the grounding line. Abstract Copyright (2013), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Earth Surface AU - Parizek, B R AU - Christianson, K AU - Anandakrishnan, S AU - Alley, R B AU - Walker, R T AU - Edwards, R A AU - Wolfe, D S AU - Bertini, G T AU - Rinehart, S K AU - Bindschadler, Robert A AU - Nowicki, S M J Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 638 EP - 655 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 2 SN - 2169-9003, 2169-9003 KW - West Antarctica KW - subglacial processes KW - stability KW - ice shelves KW - digital terrain models KW - simulation KW - deglaciation KW - climate change KW - feedback KW - melting KW - ice streams KW - dynamics KW - rheology KW - West Antarctic ice sheet KW - sediments KW - ocean circulation KW - clastic sediments KW - glaciers KW - glacial features KW - till KW - satellite methods KW - ice sheets KW - models KW - Antarctic ice sheet KW - sea-level changes KW - Antarctica KW - glacier tongues KW - glacial geology KW - Amundsen Sea KW - Thwaites Glacier KW - remote sensing KW - 24:Quaternary geology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1464893189?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Dynamic+%28in%29stability+of+Thwaites+Glacier%2C+West+Antarctica&rft.au=Parizek%2C+B+R%3BChristianson%2C+K%3BAnandakrishnan%2C+S%3BAlley%2C+R+B%3BWalker%2C+R+T%3BEdwards%2C+R+A%3BWolfe%2C+D+S%3BBertini%2C+G+T%3BRinehart%2C+S+K%3BBindschadler%2C+Robert+A%3BNowicki%2C+S+M+J&rft.aulast=Parizek&rft.aufirst=B&rft.date=2013-06-01&rft.volume=118&rft.issue=2&rft.spage=638&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Earth+Surface&rft.issn=21699003&rft_id=info:doi/10.1002%2Fjgrf.20044 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9011/issues?year=2013 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2013-01-01 N1 - Number of references - 86 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Includes appendices N1 - Last updated - 2013-12-05 N1 - SubjectsTermNotLitGenreText - Amundsen Sea; Antarctic ice sheet; Antarctica; clastic sediments; climate change; deglaciation; digital terrain models; dynamics; feedback; glacial features; glacial geology; glacier tongues; glaciers; ice sheets; ice shelves; ice streams; melting; models; ocean circulation; remote sensing; rheology; satellite methods; sea-level changes; sediments; simulation; stability; subglacial processes; Thwaites Glacier; till; West Antarctic ice sheet; West Antarctica DO - http://dx.doi.org/10.1002/jgrf.20044 ER - TY - JOUR T1 - Insights into spatial sensitivities of ice mass response to environmental change from the SeaRISE ice sheet modeling project I; Antarctica AN - 1464892701; 2013-093638 AB - Atmospheric, oceanic, and subglacial forcing scenarios from the Sea-level Response to Ice Sheet Evolution (SeaRISE) project are applied to six three-dimensional thermomechanical ice-sheet models to assess Antarctic ice sheet sensitivity over a 500 year timescale and to inform future modeling and field studies. Results indicate (i) growth with warming, except within low-latitude basins (where inland thickening is outpaced by marginal thinning); (ii) mass loss with enhanced sliding (with basins dominated by high driving stresses affected more than basins with low-surface-slope streaming ice); and (iii) mass loss with enhanced ice shelf melting (with changes in West Antarctica dominating the signal due to its marine setting and extensive ice shelves; cf. minimal impact in the Terre Adelie, George V, Oates, and Victoria Land region of East Antarctica). Ice loss due to dynamic changes associated with enhanced sliding and/or sub-shelf melting exceeds the gain due to increased precipitation. Furthermore, differences in results between and within basins as well as the controlling impact of sub-shelf melting on ice dynamics highlight the need for improved understanding of basal conditions, grounding-zone processes, ocean-ice interactions, and the numerical representation of all three. Abstract Copyright (2013), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Earth Surface AU - Nowicki, Sophie AU - Bindschadler, Robert A AU - Abe-Ouchi, Ayako AU - Aschwanden, Andy AU - Bueler, Ed AU - Choi, Hyeungu AU - Fastook, Jim AU - Granzow, Glen AU - Greve, Ralf AU - Gutowski, Gail AU - Herzfeld, Ute AU - Jackson, Charles AU - Johnson, Jesse AU - Khroulev, Constantine AU - Larour, Eric AU - Levermann, Anders AU - Lipscomb, William H AU - Martin, Maria A AU - Morlighem, Mathieu AU - Parizek, Byron R AU - Pollard, David AU - Price, Stephen F AU - Ren, Diandong AU - Rignot, Eric AU - Saito, Fuyuki AU - Sato, Tatsuru AU - Seddik, Hakime AU - Seroussi, Helene AU - Takahashi, Kunio AU - Walker, Ryan AU - Wang, Wei Li Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 1002 EP - 1024 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 2 SN - 2169-9003, 2169-9003 KW - subglacial processes KW - ice shelves KW - atmospheric precipitation KW - deglaciation KW - climate change KW - temperature KW - spatial variations KW - topography KW - melting KW - sensitivity analysis KW - mass balance KW - ice KW - grounding KW - basins KW - thickness KW - climate forcing KW - elevation KW - prediction KW - glaciers KW - ice dynamics KW - SeaRISE KW - ice sheets KW - models KW - sea-level changes KW - Antarctica KW - glacial geology KW - 24:Quaternary geology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1464892701?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Insights+into+spatial+sensitivities+of+ice+mass+response+to+environmental+change+from+the+SeaRISE+ice+sheet+modeling+project+I%3B+Antarctica&rft.au=Nowicki%2C+Sophie%3BBindschadler%2C+Robert+A%3BAbe-Ouchi%2C+Ayako%3BAschwanden%2C+Andy%3BBueler%2C+Ed%3BChoi%2C+Hyeungu%3BFastook%2C+Jim%3BGranzow%2C+Glen%3BGreve%2C+Ralf%3BGutowski%2C+Gail%3BHerzfeld%2C+Ute%3BJackson%2C+Charles%3BJohnson%2C+Jesse%3BKhroulev%2C+Constantine%3BLarour%2C+Eric%3BLevermann%2C+Anders%3BLipscomb%2C+William+H%3BMartin%2C+Maria+A%3BMorlighem%2C+Mathieu%3BParizek%2C+Byron+R%3BPollard%2C+David%3BPrice%2C+Stephen+F%3BRen%2C+Diandong%3BRignot%2C+Eric%3BSaito%2C+Fuyuki%3BSato%2C+Tatsuru%3BSeddik%2C+Hakime%3BSeroussi%2C+Helene%3BTakahashi%2C+Kunio%3BWalker%2C+Ryan%3BWang%2C+Wei+Li&rft.aulast=Nowicki&rft.aufirst=Sophie&rft.date=2013-06-01&rft.volume=118&rft.issue=2&rft.spage=1002&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Earth+Surface&rft.issn=21699003&rft_id=info:doi/10.1002%2Fjgrf.20081 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9011/issues?year=2013 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2013-01-01 N1 - Number of references - 119 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables, sketch maps N1 - SuppNotes - Includes appendices N1 - Last updated - 2013-12-05 N1 - SubjectsTermNotLitGenreText - Antarctica; atmospheric precipitation; basins; climate change; climate forcing; deglaciation; elevation; glacial geology; glaciers; grounding; ice; ice dynamics; ice sheets; ice shelves; mass balance; melting; models; prediction; sea-level changes; SeaRISE; sensitivity analysis; spatial variations; subglacial processes; temperature; thickness; topography DO - http://dx.doi.org/10.1002/jgrf.20081 ER - TY - JOUR T1 - Insights into spatial sensitivities of ice mass response to environmental change from the SeaRISE ice sheet modeling project II; Greenland AN - 1464892579; 2013-093639 AB - The Sea-level Response to Ice Sheet Evolution (SeaRISE) effort explores the sensitivity of the current generation of ice sheet models to external forcing to gain insight into the potential future contribution to sea level from the Greenland and Antarctic ice sheets. All participating models simulated the ice sheet response to three types of external forcings: a change in oceanic condition, a warmer atmospheric environment, and enhanced basal lubrication. Here an analysis of the spatial response of the Greenland ice sheet is presented, and the impact of model physics and spin-up on the projections is explored. Although the modeled responses are not always homogeneous, consistent spatial trends emerge from the ensemble analysis, indicating distinct vulnerabilities of the Greenland ice sheet. There are clear response patterns associated with each forcing, and a similar mass loss at the full ice sheet scale will result in different mass losses at the regional scale, as well as distinct thickness changes over the ice sheet. All forcings lead to an increased mass loss for the coming centuries, with increased basal lubrication and warmer ocean conditions affecting mainly outlet glaciers, while the impacts of atmospheric forcings affect the whole ice sheet. Abstract Copyright (2013), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Earth Surface AU - Nowicki, Sophie AU - Bindschadler, Robert A AU - Abe-Ouchi, Ayako AU - Aschwanden, Andy AU - Bueler, Ed AU - Choi, Hyeungu AU - Fastook, Jim AU - Granzow, Glen AU - Greve, Ralf AU - Gutowski, Gail AU - Herzfeld, Ute AU - Jackson, Charles AU - Johnson, Jesse AU - Khroulev, Constantine AU - Larour, Eric AU - Levermann, Anders AU - Lipscomb, William H AU - Martin, Maria A AU - Morlighem, Mathieu AU - Parizek, Byron R AU - Pollard, David AU - Price, Stephen F AU - Ren, Diandong AU - Rignot, Eric AU - Saito, Fuyuki AU - Sato, Tatsuru AU - Seddik, Hakime AU - Seroussi, Helene AU - Takahashi, Kunio AU - Walker, Ryan AU - Wang, Wei Li Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 1025 EP - 1044 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 2 SN - 2169-9003, 2169-9003 KW - subglacial processes KW - ice shelves KW - simulation KW - deglaciation KW - climate change KW - Greenland KW - spatial variations KW - topography KW - melting KW - dynamics KW - sensitivity analysis KW - mass balance KW - ice KW - basins KW - thickness KW - climate forcing KW - Arctic region KW - elevation KW - prediction KW - glaciers KW - SeaRISE KW - ice sheets KW - models KW - ice movement KW - sea-level changes KW - glacial geology KW - sea-surface temperature KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1464892579?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Insights+into+spatial+sensitivities+of+ice+mass+response+to+environmental+change+from+the+SeaRISE+ice+sheet+modeling+project+II%3B+Greenland&rft.au=Nowicki%2C+Sophie%3BBindschadler%2C+Robert+A%3BAbe-Ouchi%2C+Ayako%3BAschwanden%2C+Andy%3BBueler%2C+Ed%3BChoi%2C+Hyeungu%3BFastook%2C+Jim%3BGranzow%2C+Glen%3BGreve%2C+Ralf%3BGutowski%2C+Gail%3BHerzfeld%2C+Ute%3BJackson%2C+Charles%3BJohnson%2C+Jesse%3BKhroulev%2C+Constantine%3BLarour%2C+Eric%3BLevermann%2C+Anders%3BLipscomb%2C+William+H%3BMartin%2C+Maria+A%3BMorlighem%2C+Mathieu%3BParizek%2C+Byron+R%3BPollard%2C+David%3BPrice%2C+Stephen+F%3BRen%2C+Diandong%3BRignot%2C+Eric%3BSaito%2C+Fuyuki%3BSato%2C+Tatsuru%3BSeddik%2C+Hakime%3BSeroussi%2C+Helene%3BTakahashi%2C+Kunio%3BWalker%2C+Ryan%3BWang%2C+Wei+Li&rft.aulast=Nowicki&rft.aufirst=Sophie&rft.date=2013-06-01&rft.volume=118&rft.issue=2&rft.spage=1025&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Earth+Surface&rft.issn=21699003&rft_id=info:doi/10.1002%2Fjgrf.20076 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9011/issues?year=2013 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2013-01-01 N1 - Number of references - 84 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables, sketch maps N1 - SuppNotes - Includes appendices N1 - Last updated - 2013-12-05 N1 - SubjectsTermNotLitGenreText - Arctic region; basins; climate change; climate forcing; deglaciation; dynamics; elevation; glacial geology; glaciers; Greenland; ice; ice movement; ice sheets; ice shelves; mass balance; melting; models; prediction; sea-level changes; sea-surface temperature; SeaRISE; sensitivity analysis; simulation; spatial variations; subglacial processes; thickness; topography DO - http://dx.doi.org/10.1002/jgrf.20076 ER - TY - JOUR T1 - Attribution of historical ozone forcing to anthropogenic emissions AN - 1443366543; 18646099 AB - Anthropogenic ozone radiative forcing is traditionally separately attributed to tropospheric and stratospheric changes assuming that these have distinct causes. Using the interactive composition-climate model GISS-E2-R we find that this assumption is not justified. Our simulations show that changes in emissions of tropospheric ozone precursors have substantial effects on ozone in both regions, as do anthropogenic halocarbon emissions. On the basis of our results, further simulations with the NCAR-CAM3.5 model, and published studies, we estimate industrial era (1850-2005) whole-atmosphere ozone forcing of 0.5Wm super(-2) due to anthropogenic tropospheric precursors and about -0.2Wm super(-2) due to halocarbons. The net troposphere plus stratosphere forcing is similar to the net halocarbon plus precursor ozone forcing, but the latter provides a more useful perspective. The halocarbon-induced ozone forcing is roughly two-thirds the magnitude of the halocarbon direct forcing but opposite in sign, yielding a net forcing of only 0.1Wm super(-2). Thus, the net effect of halocarbons has been smaller, and the effect of tropospheric ozone precursors has been greater, than generally recognized. JF - Nature Climate Change AU - Shindell, Drew AU - Faluvegi, Greg AU - Nazarenko, Larissa AU - Bowman, Kevin AU - Lamarque, Jean-Francois AU - Voulgarakis, Apostolos AU - Schmidt, Gavin A AU - Pechony, Olga AU - Ruedy, Reto AD - NASA Goddard Institute for Space Studies and Columbia University, New York, New York 10025, USA Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 567 EP - 570 PB - Nature Publishing Group, The Macmillan Building London N1 9XW United Kingdom VL - 3 IS - 6 SN - 1758-678X, 1758-678X KW - Environment Abstracts; Sustainability Science Abstracts; Meteorological & Geoastrophysical Abstracts KW - Historical account KW - Climate models KW - Climate change KW - Anthropogenic factors KW - Troposphere KW - Simulation KW - Stratosphere KW - Ozone in troposphere KW - Radiative forcing KW - Numerical simulations KW - Emissions KW - Ozone KW - M2 551.583:Variations (551.583) KW - M3 1010:Issues in Sustainable Development KW - ENA 01:Air Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1443366543?accountid=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=Nature+Climate+Change&rft.atitle=Attribution+of+historical+ozone+forcing+to+anthropogenic+emissions&rft.au=Shindell%2C+Drew%3BFaluvegi%2C+Greg%3BNazarenko%2C+Larissa%3BBowman%2C+Kevin%3BLamarque%2C+Jean-Francois%3BVoulgarakis%2C+Apostolos%3BSchmidt%2C+Gavin+A%3BPechony%2C+Olga%3BRuedy%2C+Reto&rft.aulast=Shindell&rft.aufirst=Drew&rft.date=2013-06-01&rft.volume=3&rft.issue=6&rft.spage=567&rft.isbn=&rft.btitle=&rft.title=Nature+Climate+Change&rft.issn=1758678X&rft_id=info:doi/10.1038%2Fnclimate1835 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-10-01 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Ozone in troposphere; Radiative forcing; Climate models; Numerical simulations; Climate change; Stratosphere; Historical account; Emissions; Anthropogenic factors; Simulation; Troposphere; Ozone DO - http://dx.doi.org/10.1038/nclimate1835 ER - TY - JOUR T1 - Impact-generated hydrothermal systems on Earth and Mars AN - 1442375398; 2013-081629 JF - Icarus AU - Osinski, Gordon R AU - Tornabene, Livio L AU - Banerjee, Neil R AU - Cockell, Charles S AU - Flemming, Roberta AU - Izawa, Matthew R M AU - McCutcheon, Jenine AU - Parnell, John AU - Preston, Louisa J AU - Pickersgill, Annemarie E AU - Pontefract, Alexandra AU - Sapers, Haley M AU - Southam, Gordon Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 347 EP - 363 PB - Elsevier, New York, NY VL - 224 IS - 2 SN - 0019-1035, 0019-1035 KW - cratering KW - impact features KW - goethite KW - lakes KW - astrobiology KW - Mars KW - Holden Crater KW - crater lakes KW - metasomatism KW - life origin KW - Nunavut KW - oxides KW - Haughton impact structure KW - hydrothermal alteration KW - mineral assemblages KW - sedimentary structures KW - vugs KW - Earth KW - secondary minerals KW - laminations KW - impacts KW - veins KW - hydrothermal conditions KW - terrestrial planets KW - planets KW - habitat KW - planar bedding structures KW - Canada KW - heat sources KW - terrestrial comparison KW - impact craters KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442375398?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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-generated+hydrothermal+systems+on+Earth+and+Mars&rft.au=Osinski%2C+Gordon+R%3BTornabene%2C+Livio+L%3BBanerjee%2C+Neil+R%3BCockell%2C+Charles+S%3BFlemming%2C+Roberta%3BIzawa%2C+Matthew+R+M%3BMcCutcheon%2C+Jenine%3BParnell%2C+John%3BPreston%2C+Louisa+J%3BPickersgill%2C+Annemarie+E%3BPontefract%2C+Alexandra%3BSapers%2C+Haley+M%3BSoutham%2C+Gordon&rft.aulast=Osinski&rft.aufirst=Gordon&rft.date=2013-06-01&rft.volume=224&rft.issue=2&rft.spage=347&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2012.08.030 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Conference title - Mars analogues workshop N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 84 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2013-10-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - astrobiology; Canada; crater lakes; cratering; Earth; goethite; habitat; Haughton impact structure; heat sources; Holden Crater; hydrothermal alteration; hydrothermal conditions; impact craters; impact features; impacts; lakes; laminations; life origin; Mars; metasomatism; mineral assemblages; Nunavut; oxides; planar bedding structures; planets; secondary minerals; sedimentary structures; terrestrial comparison; terrestrial planets; veins; vugs DO - http://dx.doi.org/10.1016/j.icarus.2012.08.030 ER - TY - JOUR T1 - Mineralogy of saline perennial cold springs on Axel Heiberg Island, Nunavut, Canada and implications for spring deposits on Mars AN - 1442375265; 2013-081630 JF - Icarus AU - Battler, Melissa M AU - Osinski, Gordon R AU - Banerjee, Neil R Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 364 EP - 381 PB - Elsevier, New York, NY VL - 224 IS - 2 SN - 0019-1035, 0019-1035 KW - halides KW - icy satellites KW - anhydrite KW - permafrost KW - Europa Satellite KW - X-ray diffraction data KW - Mars KW - Galilean satellites KW - salinity KW - Axel Heiberg Island KW - temperature KW - Queen Elizabeth Islands KW - Sverdrup Islands KW - sedimentary rocks KW - gypsum KW - amino acids KW - Nunavut KW - chlorides KW - springs KW - cold springs KW - satellites KW - chemically precipitated rocks KW - sulfates KW - native elements KW - evaporites KW - halite KW - calcite KW - terrestrial planets KW - planets KW - organic compounds KW - organic acids KW - Canada KW - thenardite KW - natural analogs KW - low temperature KW - sulfur KW - terrestrial comparison KW - mirabilite KW - carbonates KW - preservation KW - microorganisms KW - 06A:Sedimentary petrology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442375265?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Mineralogy+of+saline+perennial+cold+springs+on+Axel+Heiberg+Island%2C+Nunavut%2C+Canada+and+implications+for+spring+deposits+on+Mars&rft.au=Battler%2C+Melissa+M%3BOsinski%2C+Gordon+R%3BBanerjee%2C+Neil+R&rft.aulast=Battler&rft.aufirst=Melissa&rft.date=2013-06-01&rft.volume=224&rft.issue=2&rft.spage=364&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2012.08.031 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Conference title - Mars analogues workshop N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 61 N1 - PubXState - NY N1 - Document feature - illus. incl. 5 tables, sketch maps N1 - Last updated - 2013-10-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - amino acids; anhydrite; Axel Heiberg Island; calcite; Canada; carbonates; chemically precipitated rocks; chlorides; cold springs; Europa Satellite; evaporites; Galilean satellites; gypsum; halides; halite; icy satellites; low temperature; Mars; microorganisms; mirabilite; native elements; natural analogs; Nunavut; organic acids; organic compounds; permafrost; planets; preservation; Queen Elizabeth Islands; salinity; satellites; sedimentary rocks; springs; sulfates; sulfur; Sverdrup Islands; temperature; terrestrial comparison; terrestrial planets; thenardite; X-ray diffraction data DO - http://dx.doi.org/10.1016/j.icarus.2012.08.031 ER - TY - JOUR T1 - Immunological detection of mellitic acid in the Atacama Desert; implication for organics detection on Mars AN - 1442375129; 2013-081627 JF - Icarus AU - Bianco, Yolanda AU - Rivas, Luis A AU - Ruiz-Bermejo, Marta AU - Parro, Victor Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 326 EP - 333 PB - Elsevier, New York, NY VL - 224 IS - 2 SN - 0019-1035, 0019-1035 KW - gas chromatograms KW - mass spectra KW - astrobiology KW - Mars KW - Chile KW - volatilization KW - meteorites KW - Atacama Desert KW - immunoassays KW - carboxylic acids KW - spectra KW - soils KW - polycarboxilic acids KW - in situ KW - oxidation KW - perchlorate KW - terrestrial planets KW - planets KW - volatiles KW - South America KW - organic compounds KW - organic acids KW - mellitic acid KW - detection KW - chromatograms KW - terrestrial comparison KW - regolith KW - 04:Extraterrestrial geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442375129?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Immunological+detection+of+mellitic+acid+in+the+Atacama+Desert%3B+implication+for+organics+detection+on+Mars&rft.au=Bianco%2C+Yolanda%3BRivas%2C+Luis+A%3BRuiz-Bermejo%2C+Marta%3BParro%2C+Victor&rft.aulast=Bianco&rft.aufirst=Yolanda&rft.date=2013-06-01&rft.volume=224&rft.issue=2&rft.spage=326&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2012.06.006 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Conference title - Mars analogues workshop N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 49 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2013-10-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - astrobiology; Atacama Desert; carboxylic acids; Chile; chromatograms; detection; gas chromatograms; immunoassays; in situ; Mars; mass spectra; mellitic acid; meteorites; organic acids; organic compounds; oxidation; perchlorate; planets; polycarboxilic acids; regolith; soils; South America; spectra; terrestrial comparison; terrestrial planets; volatiles; volatilization DO - http://dx.doi.org/10.1016/j.icarus.2012.06.006 ER - TY - JOUR T1 - Characterization of the acidic cold seep emplaced jarositic Golden Deposit, NWT, Canada, as an analogue for jarosite deposition on Mars AN - 1442375040; 2013-081631 JF - Icarus AU - Battler, Melissa M AU - Osinski, Gordon R AU - Lim, Darlene S S AU - Davila, Alfonso F AU - Michel, Frederick A AU - Craig, Michael A AU - Izawa, Matthew R M AU - Leoni, Lisa AU - Slater, Gregory F AU - Fairen, Alberto G AU - Preston, Louisa J AU - Banerjee, Neil R Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 382 EP - 398 PB - Elsevier, New York, NY VL - 224 IS - 2 SN - 0019-1035, 0019-1035 KW - terrestrial environment KW - permafrost KW - X-ray diffraction data KW - semi-arid environment KW - cold seeps KW - ocher KW - mass spectra KW - astrobiology KW - Mars KW - mineral composition KW - Mawrth Vallis KW - acidic composition KW - spectra KW - pH KW - Meridiani Planum KW - sulfates KW - Golden Deposit KW - iron sulfates KW - hydrochemistry KW - Northwest Territories KW - terrestrial planets KW - jarosite KW - ICP mass spectra KW - planets KW - evaporation KW - paleoenvironment KW - Canada KW - deposition KW - natural analogs KW - Western Canada KW - terrestrial comparison KW - reflectance KW - 04:Extraterrestrial geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442375040?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Characterization+of+the+acidic+cold+seep+emplaced+jarositic+Golden+Deposit%2C+NWT%2C+Canada%2C+as+an+analogue+for+jarosite+deposition+on+Mars&rft.au=Battler%2C+Melissa+M%3BOsinski%2C+Gordon+R%3BLim%2C+Darlene+S+S%3BDavila%2C+Alfonso+F%3BMichel%2C+Frederick+A%3BCraig%2C+Michael+A%3BIzawa%2C+Matthew+R+M%3BLeoni%2C+Lisa%3BSlater%2C+Gregory+F%3BFairen%2C+Alberto+G%3BPreston%2C+Louisa+J%3BBanerjee%2C+Neil+R&rft.aulast=Battler&rft.aufirst=Melissa&rft.date=2013-06-01&rft.volume=224&rft.issue=2&rft.spage=382&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2012.05.015 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Conference title - Mars analogues workshop N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 74 N1 - PubXState - NY N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2013-10-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - acidic composition; astrobiology; Canada; cold seeps; deposition; evaporation; Golden Deposit; hydrochemistry; ICP mass spectra; iron sulfates; jarosite; Mars; mass spectra; Mawrth Vallis; Meridiani Planum; mineral composition; natural analogs; Northwest Territories; ocher; paleoenvironment; permafrost; pH; planets; reflectance; semi-arid environment; spectra; sulfates; terrestrial comparison; terrestrial environment; terrestrial planets; Western Canada; X-ray diffraction data DO - http://dx.doi.org/10.1016/j.icarus.2012.05.015 ER - TY - JOUR T1 - Low temperature production and exhalation of methane from serpentinized rocks on Earth; a potential analog for methane production on Mars AN - 1442375000; 2013-081623 JF - Icarus AU - Etiope, Giuseppe AU - Ehlmann, Bethany L AU - Schoell, Martin Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 276 EP - 285 PB - Elsevier, New York, NY VL - 224 IS - 2 SN - 0019-1035, 0019-1035 KW - silicates KW - serpentinization KW - Tekirova Ophiolite KW - isotopes KW - microcracks KW - igneous rocks KW - aliphatic hydrocarbons KW - olivine group KW - Mars KW - ethane KW - metasomatism KW - stable isotopes KW - temperature KW - plutonic rocks KW - catalysis KW - carbon KW - olivine KW - orthosilicates KW - Asia KW - Middle East KW - methane KW - isotope ratios KW - C-13/C-12 KW - Turkey KW - ophiolite KW - alkanes KW - ultramafics KW - hydrothermal conditions KW - gases KW - terrestrial planets KW - nesosilicates KW - planets KW - organic compounds KW - cracks KW - D/H KW - hydrogen KW - natural analogs KW - low temperature KW - hydrocarbons KW - terrestrial comparison KW - 04:Extraterrestrial geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442375000?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Low+temperature+production+and+exhalation+of+methane+from+serpentinized+rocks+on+Earth%3B+a+potential+analog+for+methane+production+on+Mars&rft.au=Etiope%2C+Giuseppe%3BEhlmann%2C+Bethany+L%3BSchoell%2C+Martin&rft.aulast=Etiope&rft.aufirst=Giuseppe&rft.date=2013-06-01&rft.volume=224&rft.issue=2&rft.spage=276&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2012.05.009 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Conference title - Mars analogues workshop N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 84 N1 - PubXState - NY N1 - Document feature - illus. N1 - Last updated - 2013-10-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; Asia; C-13/C-12; carbon; catalysis; cracks; D/H; ethane; gases; hydrocarbons; hydrogen; hydrothermal conditions; igneous rocks; isotope ratios; isotopes; low temperature; Mars; metasomatism; methane; microcracks; Middle East; natural analogs; nesosilicates; olivine; olivine group; ophiolite; organic compounds; orthosilicates; planets; plutonic rocks; serpentinization; silicates; stable isotopes; Tekirova Ophiolite; temperature; terrestrial comparison; terrestrial planets; Turkey; ultramafics DO - http://dx.doi.org/10.1016/j.icarus.2012.05.009 ER - TY - JOUR T1 - Searching for stromatolites; the 3.4 Ga Strelley Pool Formation (Pilbara region, Western Australia) as a Mars analogue AN - 1442374927; 2013-081633 JF - Icarus AU - Clarke, Jonathan D A AU - Stoker, Carol R Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 413 EP - 423 PB - Elsevier, New York, NY VL - 224 IS - 2 SN - 0019-1035, 0019-1035 KW - hyperspectral analysis KW - Noachian KW - X-ray diffraction data KW - Western Australia KW - astrobiology KW - Strelley Pool Formation KW - Mars KW - mapping KW - outcrops KW - Australia KW - Archean KW - sedimentary structures KW - Pilbara KW - Precambrian KW - Australasia KW - biogenic structures KW - rovers KW - terrestrial planets KW - morphology KW - stromatolites KW - planets KW - natural analogs KW - Mars Science Laboratory KW - terrestrial comparison KW - 06A:Sedimentary petrology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442374927?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Searching+for+stromatolites%3B+the+3.4+Ga+Strelley+Pool+Formation+%28Pilbara+region%2C+Western+Australia%29+as+a+Mars+analogue&rft.au=Clarke%2C+Jonathan+D+A%3BStoker%2C+Carol+R&rft.aulast=Clarke&rft.aufirst=Jonathan+D&rft.date=2013-06-01&rft.volume=224&rft.issue=2&rft.spage=413&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.02.006 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Conference title - Mars analogues workshop N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 57 N1 - PubXState - NY N1 - Document feature - illus. incl. 4 tables, geol. sketch maps N1 - Last updated - 2013-10-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - Archean; astrobiology; Australasia; Australia; biogenic structures; hyperspectral analysis; mapping; Mars; Mars Science Laboratory; morphology; natural analogs; Noachian; outcrops; Pilbara; planets; Precambrian; rovers; sedimentary structures; Strelley Pool Formation; stromatolites; terrestrial comparison; terrestrial planets; Western Australia; X-ray diffraction data DO - http://dx.doi.org/10.1016/j.icarus.2013.02.006 ER - TY - JOUR T1 - Coordinated analyses of Antarctic sediments as Mars analog materials using reflectance spectroscopy and current flight-like instruments for CheMin, SAM and MOMA AN - 1442374824; 2013-081626 JF - Icarus AU - Bishop, Janice L AU - Franz, Heather B AU - Goetz, Walter AU - Blake, David F AU - Freissinet, Caroline AU - Steininger, Harald AU - Goesmann, Fred AU - Brinckerhoff, William B AU - Getty, Stephanie AU - Pinnick, Veronica T AU - Mahaffy, Paul R AU - Dyar, M Darby Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 309 EP - 325 PB - Elsevier, New York, NY VL - 224 IS - 2 SN - 0019-1035, 0019-1035 KW - silicates KW - Mars Organic Molecule Analyzer KW - X-ray diffraction data KW - gas chromatograms KW - aliphatic hydrocarbons KW - mass spectra KW - Mars KW - Compact Reconnaissance Imaging Spectrometer for Mars KW - clinoamphibole KW - ground truth KW - sediments KW - CheMin KW - spectra KW - inorganic acids KW - tremolite KW - phosphoric acid KW - chain silicates KW - ExoMars Mission KW - methane KW - CRISM KW - amphibole group KW - alkanes KW - Sample Analysis at Mars instrument suite KW - Taylor Valley KW - clay minerals KW - calcite KW - terrestrial planets KW - planets KW - allophane KW - organic compounds KW - Antarctica KW - Lake Hoare KW - chromatograms KW - natural analogs KW - McMurdo dry valleys KW - Mars Science Laboratory KW - hydrocarbons KW - Victoria Land KW - terrestrial comparison KW - sheet silicates KW - reflectance KW - carbonates KW - 06A:Sedimentary petrology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442374824?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Coordinated+analyses+of+Antarctic+sediments+as+Mars+analog+materials+using+reflectance+spectroscopy+and+current+flight-like+instruments+for+CheMin%2C+SAM+and+MOMA&rft.au=Bishop%2C+Janice+L%3BFranz%2C+Heather+B%3BGoetz%2C+Walter%3BBlake%2C+David+F%3BFreissinet%2C+Caroline%3BSteininger%2C+Harald%3BGoesmann%2C+Fred%3BBrinckerhoff%2C+William+B%3BGetty%2C+Stephanie%3BPinnick%2C+Veronica+T%3BMahaffy%2C+Paul+R%3BDyar%2C+M+Darby&rft.aulast=Bishop&rft.aufirst=Janice&rft.date=2013-06-01&rft.volume=224&rft.issue=2&rft.spage=309&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2012.05.014 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Conference title - Mars analogues workshop N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 94 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - SuppNotes - Supplemental information/data is available in the online version of this article N1 - Last updated - 2013-10-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; allophane; amphibole group; Antarctica; calcite; carbonates; chain silicates; CheMin; chromatograms; clay minerals; clinoamphibole; Compact Reconnaissance Imaging Spectrometer for Mars; CRISM; ExoMars Mission; gas chromatograms; ground truth; hydrocarbons; inorganic acids; Lake Hoare; Mars; Mars Organic Molecule Analyzer; Mars Science Laboratory; mass spectra; McMurdo dry valleys; methane; natural analogs; organic compounds; phosphoric acid; planets; reflectance; Sample Analysis at Mars instrument suite; sediments; sheet silicates; silicates; spectra; Taylor Valley; terrestrial comparison; terrestrial planets; tremolite; Victoria Land; X-ray diffraction data DO - http://dx.doi.org/10.1016/j.icarus.2012.05.014 ER - TY - JOUR T1 - A hypersaline spring analogue in Manitoba, Canada for potential ancient spring deposits on Mars AN - 1442374769; 2013-081632 JF - Icarus AU - Berard, Genevieve AU - Applin, Daniel AU - Cloutis, Edward AU - Stromberg, Jessica AU - Sharma, Raven AU - Mann, Paul AU - Grasby, Stephen AU - Bezys, Ruth AU - Horgan, Briony AU - Londry, Kathleen AU - Rice, Melissa AU - Last, Bill AU - Last, Fawn AU - Badiou, Pascal AU - Goldsborough, Gordon AU - Bell, James, III Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 399 EP - 412 PB - Elsevier, New York, NY VL - 224 IS - 2 SN - 0019-1035, 0019-1035 KW - halides KW - goethite KW - East German Creek KW - X-ray diffraction data KW - aliphatic hydrocarbons KW - Mars KW - Vernal Crater KW - Arabia Terra KW - gorthite KW - sedimentary rocks KW - silica KW - gypsum KW - chlorides KW - springs KW - oxides KW - porphyrins KW - hypersaline environment KW - chemically precipitated rocks KW - methane KW - CRISM KW - sulfates KW - pigments KW - Mars Reconnaissance Orbiter KW - alkanes KW - Manitoba KW - hydrochemistry KW - biomarkers KW - halite KW - chlorophyll KW - calcite KW - terrestrial planets KW - planets KW - organic compounds KW - Canada KW - natural analogs KW - hydrocarbons KW - Western Canada KW - reflectance KW - carbonates KW - preservation KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442374769?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+hypersaline+spring+analogue+in+Manitoba%2C+Canada+for+potential+ancient+spring+deposits+on+Mars&rft.au=Berard%2C+Genevieve%3BApplin%2C+Daniel%3BCloutis%2C+Edward%3BStromberg%2C+Jessica%3BSharma%2C+Raven%3BMann%2C+Paul%3BGrasby%2C+Stephen%3BBezys%2C+Ruth%3BHorgan%2C+Briony%3BLondry%2C+Kathleen%3BRice%2C+Melissa%3BLast%2C+Bill%3BLast%2C+Fawn%3BBadiou%2C+Pascal%3BGoldsborough%2C+Gordon%3BBell%2C+James%2C+III&rft.aulast=Berard&rft.aufirst=Genevieve&rft.date=2013-06-01&rft.volume=224&rft.issue=2&rft.spage=399&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2012.12.024 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Conference title - Mars analogues workshop N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 38 N1 - PubXState - NY N1 - SuppNotes - Supplemental information/data is available in the online version of this article N1 - Last updated - 2013-10-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; Arabia Terra; biomarkers; calcite; Canada; carbonates; chemically precipitated rocks; chlorides; chlorophyll; CRISM; East German Creek; goethite; gorthite; gypsum; halides; halite; hydrocarbons; hydrochemistry; hypersaline environment; Manitoba; Mars; Mars Reconnaissance Orbiter; methane; natural analogs; organic compounds; oxides; pigments; planets; porphyrins; preservation; reflectance; sedimentary rocks; silica; springs; sulfates; terrestrial planets; Vernal Crater; Western Canada; X-ray diffraction data DO - http://dx.doi.org/10.1016/j.icarus.2012.12.024 ER - TY - JOUR T1 - Geochemistry of a continental site of serpentinization, the Tablelands Ophiolite, Gros Morne National Park; a Mars analogue AN - 1442374750; 2013-081624 JF - Icarus AU - Szponar, Natalie AU - Brazelton, William J AU - Schrenk, Matthew O AU - Bower, Dina M AU - Steele, Andrew AU - Morrill, Penny L Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 286 EP - 296 PB - Elsevier, New York, NY VL - 224 IS - 2 SN - 0019-1035, 0019-1035 KW - serpentinization KW - isotopes KW - igneous rocks KW - Fischer-Tropsch type synthesis KW - aliphatic hydrocarbons KW - Newfoundland and Labrador KW - Mars KW - metasomatism KW - stable isotopes KW - Newfoundland KW - ground water KW - plutonic rocks KW - Gros Morne National Park KW - carbon KW - springs KW - geochemistry KW - chemosynthesis KW - meteoric water KW - Tablelands Ophiolite KW - methane KW - isotope ratios KW - C-13/C-12 KW - solutes KW - atmosphere KW - ophiolite KW - alkanes KW - ultramafics KW - terrestrial planets KW - aqueous alteration KW - planets KW - hydration KW - organic compounds KW - Canada KW - natural analogs KW - hydrocarbons KW - Eastern Canada KW - carbonates 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/1442374750?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Geochemistry+of+a+continental+site+of+serpentinization%2C+the+Tablelands+Ophiolite%2C+Gros+Morne+National+Park%3B+a+Mars+analogue&rft.au=Szponar%2C+Natalie%3BBrazelton%2C+William+J%3BSchrenk%2C+Matthew+O%3BBower%2C+Dina+M%3BSteele%2C+Andrew%3BMorrill%2C+Penny+L&rft.aulast=Szponar&rft.aufirst=Natalie&rft.date=2013-06-01&rft.volume=224&rft.issue=2&rft.spage=286&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2012.07.004 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Conference title - Mars analogues workshop N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 61 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables, geol. sketch map N1 - Last updated - 2013-10-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; aqueous alteration; atmosphere; C-13/C-12; Canada; carbon; carbonates; chemosynthesis; Eastern Canada; Fischer-Tropsch type synthesis; geochemistry; Gros Morne National Park; ground water; hydration; hydrocarbons; igneous rocks; isotope ratios; isotopes; Mars; metasomatism; meteoric water; methane; natural analogs; Newfoundland; Newfoundland and Labrador; ophiolite; organic compounds; planets; plutonic rocks; serpentinization; solutes; springs; stable isotopes; Tablelands Ophiolite; terrestrial planets; ultramafics DO - http://dx.doi.org/10.1016/j.icarus.2012.07.004 ER - TY - JOUR T1 - Isotopic and geochemical investigation of two distinct Mars analog environments using evolved gas techniques in Svalbard, Norway AN - 1442374720; 2013-081625 JF - Icarus AU - Stern, Jennifer C AU - McAdam, Amy C AU - ten Kate, Inge L AU - Bish, David L AU - Blake, David F AU - Morris, Richard V AU - Bowden, Roxane AU - Fogel, Marilyn L AU - Glamoclija, Mihaela AU - Mahaffy, Paul R AU - Steele, Andrew AU - Amundsen, Hans E F Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 297 EP - 308 PB - Elsevier, New York, NY VL - 224 IS - 2 SN - 0019-1035, 0019-1035 KW - oxygen KW - X-ray diffraction data KW - Svalbard KW - isotopes KW - mass spectra KW - Mars KW - Europe KW - stable isotopes KW - carbon dioxide KW - pyrolysis KW - carbon KW - spectra KW - geochemistry KW - chemosynthesis KW - Western Europe KW - isotope ratios KW - Arctic region KW - C-13/C-12 KW - O-18/O-16 KW - gases KW - terrestrial planets KW - planets KW - Scandinavia KW - natural analogs KW - Mars Science Laboratory KW - terrestrial comparison KW - Norway KW - carbonates KW - 04:Extraterrestrial geology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442374720?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Isotopic+and+geochemical+investigation+of+two+distinct+Mars+analog+environments+using+evolved+gas+techniques+in+Svalbard%2C+Norway&rft.au=Stern%2C+Jennifer+C%3BMcAdam%2C+Amy+C%3Bten+Kate%2C+Inge+L%3BBish%2C+David+L%3BBlake%2C+David+F%3BMorris%2C+Richard+V%3BBowden%2C+Roxane%3BFogel%2C+Marilyn+L%3BGlamoclija%2C+Mihaela%3BMahaffy%2C+Paul+R%3BSteele%2C+Andrew%3BAmundsen%2C+Hans+E+F&rft.aulast=Stern&rft.aufirst=Jennifer&rft.date=2013-06-01&rft.volume=224&rft.issue=2&rft.spage=297&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2012.07.010 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Conference title - Mars analogues workshop N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 92 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2013-10-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - Arctic region; C-13/C-12; carbon; carbon dioxide; carbonates; chemosynthesis; Europe; gases; geochemistry; isotope ratios; isotopes; Mars; Mars Science Laboratory; mass spectra; natural analogs; Norway; O-18/O-16; oxygen; planets; pyrolysis; Scandinavia; spectra; stable isotopes; Svalbard; terrestrial comparison; terrestrial planets; Western Europe; X-ray diffraction data DO - http://dx.doi.org/10.1016/j.icarus.2012.07.010 ER - TY - JOUR T1 - Ignimbrite as a substrate for endolithic life in the hyper-arid Atacama Desert; implications for the search for life on Mars AN - 1442374707; 2013-081628 JF - Icarus AU - Wierzchos, Jacek AU - Davila, Alfonso F AU - Artieda, Octavio AU - Camara-Gallego, Beatriz AU - de los Rios, Asuncion AU - Nealson, Kenneth H AU - Valea, Sergio AU - Garcia-Gonzalez, M Teresa AU - Ascaso, Carmen Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 334 EP - 346 PB - Elsevier, New York, NY VL - 224 IS - 2 SN - 0019-1035, 0019-1035 KW - terrestrial environment KW - volcanic rocks KW - X-ray diffraction data KW - moisture KW - igneous rocks KW - electrophoresis KW - astrobiology KW - Mars KW - Chile KW - Gale Crater KW - Atacama Desert KW - electromagnetic radiation KW - Curiosity Rover KW - X-ray fluorescence spectra KW - spectra KW - water KW - cyanobacteria KW - annual variations KW - ignimbrite KW - arid environment KW - biomarkers KW - porosity KW - ultraviolet radiation KW - adaptation KW - terrestrial planets KW - pyroclastics KW - planets KW - habitat KW - South America KW - natural analogs KW - Mars Science Laboratory KW - terrestrial comparison KW - seasonal variations KW - SEM data KW - endolithic taxa KW - 04:Extraterrestrial geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442374707?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Ignimbrite+as+a+substrate+for+endolithic+life+in+the+hyper-arid+Atacama+Desert%3B+implications+for+the+search+for+life+on+Mars&rft.au=Wierzchos%2C+Jacek%3BDavila%2C+Alfonso+F%3BArtieda%2C+Octavio%3BCamara-Gallego%2C+Beatriz%3Bde+los+Rios%2C+Asuncion%3BNealson%2C+Kenneth+H%3BValea%2C+Sergio%3BGarcia-Gonzalez%2C+M+Teresa%3BAscaso%2C+Carmen&rft.aulast=Wierzchos&rft.aufirst=Jacek&rft.date=2013-06-01&rft.volume=224&rft.issue=2&rft.spage=334&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2012.06.009 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Conference title - Mars analogues workshop N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 82 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - SuppNotes - Supplemental information/data is available in the online version of this article N1 - Last updated - 2013-10-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - adaptation; annual variations; arid environment; astrobiology; Atacama Desert; biomarkers; Chile; Curiosity Rover; cyanobacteria; electromagnetic radiation; electrophoresis; endolithic taxa; Gale Crater; habitat; igneous rocks; ignimbrite; Mars; Mars Science Laboratory; moisture; natural analogs; planets; porosity; pyroclastics; seasonal variations; SEM data; South America; spectra; terrestrial comparison; terrestrial environment; terrestrial planets; ultraviolet radiation; volcanic rocks; water; X-ray diffraction data; X-ray fluorescence spectra DO - http://dx.doi.org/10.1016/j.icarus.2012.06.009 ER - TY - JOUR T1 - Mars analogues workshop AN - 1442374578; 2013-081620 JF - Icarus Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 261 EP - 432 PB - Elsevier, New York, NY VL - 224 IS - 2 SN - 0019-1035, 0019-1035 KW - terrestrial planets KW - planets KW - symposia KW - natural analogs KW - Mars Science Laboratory KW - terrestrial comparison KW - Mars KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442374578?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=Icarus&rft.atitle=Mars+analogues+workshop&rft.au=&rft.aulast=&rft.aufirst=&rft.date=2013-06-01&rft.volume=224&rft.issue=2&rft.spage=261&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/ L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Conference title - Mars analogues workshop N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - PubXState - NY N1 - Document feature - illus. N1 - SuppNotes - Individual papers are cited separately N1 - Last updated - 2013-10-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - Mars; Mars Science Laboratory; natural analogs; planets; symposia; terrestrial comparison; terrestrial planets ER - TY - JOUR T1 - Analogue sites for Mars missions; NASA's Mars Science Laboratory and beyond; overview of an international workshop held at The Woodlands, Texas on March 5-6, 2011 AN - 1442374358; 2013-081621 JF - Icarus AU - Hipkin, Victoria J AU - Voytek, M A AU - Meyer, M A AU - Leveille, R AU - Domagal-Goldman, Shawn D Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 261 EP - 267 PB - Elsevier, New York, NY VL - 224 IS - 2 SN - 0019-1035, 0019-1035 KW - terrestrial planets KW - planets KW - planning KW - site exploration KW - natural analogs KW - Mars Science Laboratory KW - astrobiology KW - terrestrial comparison KW - Mars KW - landing sites KW - evaluation KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442374358?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Analogue+sites+for+Mars+missions%3B+NASA%27s+Mars+Science+Laboratory+and+beyond%3B+overview+of+an+international+workshop+held+at+The+Woodlands%2C+Texas+on+March+5-6%2C+2011&rft.au=Hipkin%2C+Victoria+J%3BVoytek%2C+M+A%3BMeyer%2C+M+A%3BLeveille%2C+R%3BDomagal-Goldman%2C+Shawn+D&rft.aulast=Hipkin&rft.aufirst=Victoria&rft.date=2013-06-01&rft.volume=224&rft.issue=2&rft.spage=261&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.02.021 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Conference title - Mars analogues workshop N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 21 N1 - PubXState - NY N1 - Document feature - illus. incl. 5 tables, sketch map N1 - SuppNotes - Includes appendices N1 - Last updated - 2013-10-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - astrobiology; evaluation; landing sites; Mars; Mars Science Laboratory; natural analogs; planets; planning; site exploration; terrestrial comparison; terrestrial planets DO - http://dx.doi.org/10.1016/j.icarus.2013.02.021 ER - TY - JOUR T1 - Redefining the isotopic boundaries of biogenic methane; methane from endoevaporites AN - 1442374295; 2013-081622 JF - Icarus AU - Tazaz, Amanda M AU - Bebout, Brad M AU - Kelley, Cheryl A AU - Poole, Jennifer AU - Chanton, Jeffrey P Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 268 EP - 275 PB - Elsevier, New York, NY VL - 224 IS - 2 SN - 0019-1035, 0019-1035 KW - United States KW - thermal alteration KW - isotopes KW - aliphatic hydrocarbons KW - astrobiology KW - Mars KW - ethane KW - salinity KW - stable isotopes KW - California KW - San Francisco Bay KW - Baja California KW - Guerrero Negro Mexico KW - carbon KW - Laguna Figueroa KW - hypersaline environment KW - methane KW - isotope ratios KW - C-13/C-12 KW - bubbles KW - atmosphere KW - alkanes KW - gases KW - terrestrial planets KW - planets KW - salterns KW - organic compounds KW - Don Edwards National Wildlife Refuge KW - biogenic processes KW - Mexico KW - D/H KW - hydrogen KW - hydrocarbons KW - Laguna San Ignacio KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442374295?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Redefining+the+isotopic+boundaries+of+biogenic+methane%3B+methane+from+endoevaporites&rft.au=Tazaz%2C+Amanda+M%3BBebout%2C+Brad+M%3BKelley%2C+Cheryl+A%3BPoole%2C+Jennifer%3BChanton%2C+Jeffrey+P&rft.aulast=Tazaz&rft.aufirst=Amanda&rft.date=2013-06-01&rft.volume=224&rft.issue=2&rft.spage=268&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2012.06.008 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Conference title - Mars analogues workshop N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 64 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table, sketch map N1 - Last updated - 2013-10-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; astrobiology; atmosphere; Baja California; biogenic processes; bubbles; C-13/C-12; California; carbon; D/H; Don Edwards National Wildlife Refuge; ethane; gases; Guerrero Negro Mexico; hydrocarbons; hydrogen; hypersaline environment; isotope ratios; isotopes; Laguna Figueroa; Laguna San Ignacio; Mars; methane; Mexico; organic compounds; planets; salinity; salterns; San Francisco Bay; stable isotopes; terrestrial planets; thermal alteration; United States DO - http://dx.doi.org/10.1016/j.icarus.2012.06.008 ER - TY - JOUR T1 - Numerical simulation of convectively generated vortices; application to the Jovian planets AN - 1429845367; 2013-069232 AB - Numerical experiments are performed to study the possibility of long-lived vortex generation in rotating convection zones. The domain of computation is a rectangular box with fixed latitude. The fully compressible fluid equations are solved using an explicit, strongly conservative finite difference method. A total of eight cases covering two different latitudes and four different rotation rates were computed. As the rotation rate increases, a long-lived cyclone first appears. The high latitude environment is more favorable for vortex formation. An anticyclone appears when the rotation is adequately fast. Possible implications of the numerical results to the Jovian planets are discussed. Abstract Copyright (2013) Elsevier, B.V. JF - Earth and Planetary Science Letters AU - Chan, Kwing L AU - Mayr, Hans G Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 212 EP - 219 PB - Elsevier, Amsterdam VL - 371-372 SN - 0012-821X, 0012-821X KW - White Ovals KW - anticyclones KW - numerical models KW - finite difference analysis KW - Jupiter KW - vorticity KW - convection KW - simulation KW - Great Red Spot KW - cyclones KW - giant planets KW - Saturn KW - planets KW - dynamics KW - rotation KW - velocity structure KW - storms KW - outer planets KW - latitude KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1429845367?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Numerical+simulation+of+convectively+generated+vortices%3B+application+to+the+Jovian+planets&rft.au=Chan%2C+Kwing+L%3BMayr%2C+Hans+G&rft.aulast=Chan&rft.aufirst=Kwing&rft.date=2013-06-01&rft.volume=371-372&rft.issue=&rft.spage=212&rft.isbn=&rft.btitle=&rft.title=Earth+and+Planetary+Science+Letters&rft.issn=0012821X&rft_id=info:doi/10.1016%2Fj.epsl.2013.03.046 L2 - http://www.sciencedirect.com/science/journal/0012821X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2013-01-01 N1 - Number of references - 44 N1 - Document feature - illus. incl. 2 tables N1 - SuppNotes - Supplemental information/data is available in the online version of this article N1 - Last updated - 2013-09-05 N1 - CODEN - EPSLA2 N1 - SubjectsTermNotLitGenreText - anticyclones; convection; cyclones; dynamics; finite difference analysis; giant planets; Great Red Spot; Jupiter; latitude; numerical models; outer planets; planets; rotation; Saturn; simulation; storms; velocity structure; vorticity; White Ovals DO - http://dx.doi.org/10.1016/j.epsl.2013.03.046 ER - TY - JOUR T1 - Broken ergodicity, magnetic helicity, and the MHD dynamo AN - 1417903734; 18247336 AB - We consider an unforced, incompressible, turbulent magnetofluid constrained by concentric inner and outer spherical surfaces. We define a model system in which normal components of the velocity, magnetic field, vorticity, and electric current are zero on the boundaries. This choice allows us to find a set of Galerkin expansion functions that are common to both velocity and magnetic field, as well as vorticity and current. The model dynamical system represents magnetohydrodynamic (MHD) turbulence in a spherical domain and is analyzed by the methods similar to those applied to homogeneous MHD turbulence. We find a statistical theory of ideal (i.e. no dissipation) MHD turbulence analogous to that found in the homogeneous case, including the prediction of coherent structure in the form of a large-scale quasistationary magnetic field. This MHD dynamo depends on broken ergodicity, an effect that is enhanced when total magnetic helicity is increased relative to total energy. When dissipation is added and large scales are only weakly damped, quasiequilibrium may occur for long periods of time, so that the ideal theory is still pertinent on a global scale. Over longer periods of time, the selective decay of energy over magnetic helicity further enhances the effects of broken ergodicity. Thus, broken ergodicity is an essential mechanism and relative magnetic helicity is a critical parameter in this model MHD dynamo theory. JF - Geophysical and Astrophysical Fluid Dynamics AU - Shebalin, John V AD - NASA Johnson Space Center, Mail Code KR, Houston, TX 77058, USA, john.v.shebalin@nasa.gov Y1 - 2013/06/01/ PY - 2013 DA - 2013 Jun 01 SP - 353 EP - 375 PB - Taylor & Francis Group Ltd., 2 Park Square Oxford OX14 4RN United Kingdom VL - 107 IS - 3 SN - 0309-1929, 0309-1929 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Prediction KW - Magnetic fields KW - Hydrodynamics KW - Boundaries KW - Fluid dynamics KW - Velocity KW - turbulence KW - Electric Currents KW - Expansion KW - Model Studies KW - SW 0810:General KW - Q2 09183:Physics and chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1417903734?accountid=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+and+Astrophysical+Fluid+Dynamics&rft.atitle=Broken+ergodicity%2C+magnetic+helicity%2C+and+the+MHD+dynamo&rft.au=Shebalin%2C+John+V&rft.aulast=Shebalin&rft.aufirst=John&rft.date=2013-06-01&rft.volume=107&rft.issue=3&rft.spage=353&rft.isbn=&rft.btitle=&rft.title=Geophysical+and+Astrophysical+Fluid+Dynamics&rft.issn=03091929&rft_id=info:doi/10.1080%2F03091929.2012.689299 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-02-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Magnetic fields; Fluid dynamics; Prediction; Hydrodynamics; Boundaries; Velocity; Expansion; Electric Currents; turbulence; Model Studies DO - http://dx.doi.org/10.1080/03091929.2012.689299 ER - TY - JOUR T1 - Fill and spill of giant lakes in the eastern Valles Marineris region of Mars AN - 1412506039; 18185591 AB - The existence of Hesperian age (3.7-3.4 Ga) surface water bodies on Mars is a contentious issue, often conflicting with favored climate models. Extensive lakes are proposed to have filled parts of Valles Marineris during this period, yet evidence for their presence and temporal continuity is poorly constrained. Here we report geomorphic and chronologic evidence for the initiation and demise of a voluminous lake system within the basins of eastern Valles Marineris. We find that independent, kilometer-deep lakes were present here well after the wetter, global climate optimum that characterized the previous Noachian epoch (4.1-3.7 Ga). Relative and impact crater chronologies of flood channels emerging from lake basins indicate relatively late lake spillover in the Early Amazonian (ca. 3.0 Ga). Drawdown of the lake and cessation of interbasin sedimentation may be recorded by a similar Early Amazonian (ca. 3.1 Ga) crater retention age on the surface of Capri Mensa, a 4-km-tall, sulfate-bearing interior layered deposit. The topography data demonstrate that incision of the bedrock barriers between the basins during spillover was driven by a dramatic local base-level difference between the lake surface and downstream basin floors. We postulate that the lake spillover process created an integrated drainage routing system between a voluminous equatorial water supply and the northern plains basin. JF - Geology AU - Warner, Nicholas H AU - Sowe, Mariam AU - Gupta, Sanjeev AU - Dumke, Alexander AU - Goddard, Kate AD - Department of Earth Science and Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK, Nicholas.H.Warner@jpl.nasa.gov. Y1 - 2013/06// PY - 2013 DA - Jun 2013 SP - 675 EP - 678 PB - Geological Society of America, The Geological Society of America P.O. Box 9140 Boulder, CO 80301-9140 Packages Only: The Geological Society of America 3300 Penrose Place Boulder, CO 80301-1806 Phone: +1-303-357-1000 FAX: +1-303-357-1070 VL - 41 IS - 6 SN - 0091-7613, 0091-7613 KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Meteorite craters KW - Drawdown KW - Barriers KW - Lake basins KW - Freshwater KW - Lakes KW - Geomorphology KW - Floods KW - Lake Basins KW - Sedimentation KW - Bedrock KW - Topography KW - Craters KW - Climate models KW - Drainage KW - Climates KW - Climate KW - Routing KW - Water supply KW - Global climate KW - Chronostratigraphy KW - Water bodies KW - Surface water bodies KW - SW 5010:Network design KW - O 3050:Sediment Dynamics KW - M2 523.4:Planets (523.4) KW - Q2 09124:Coastal zone management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1412506039?accountid=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=Geology&rft.atitle=Fill+and+spill+of+giant+lakes+in+the+eastern+Valles+Marineris+region+of+Mars&rft.au=Warner%2C+Nicholas+H%3BSowe%2C+Mariam%3BGupta%2C+Sanjeev%3BDumke%2C+Alexander%3BGoddard%2C+Kate&rft.aulast=Warner&rft.aufirst=Nicholas&rft.date=2013-06-01&rft.volume=41&rft.issue=6&rft.spage=675&rft.isbn=&rft.btitle=&rft.title=Geology&rft.issn=00917613&rft_id=info:doi/10.1130%2FG34172.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-07-01 N1 - Number of references - 21 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Lakes; Barriers; Geomorphology; Lake basins; Chronostratigraphy; Climate; Water bodies; Sedimentation; Water supply; Meteorite craters; Global climate; Drawdown; Climate models; Floods; Drainage; Surface water bodies; Topography; Craters; Climates; Routing; Lake Basins; Bedrock; Freshwater DO - http://dx.doi.org/10.1130/G34172.1 ER - TY - JOUR T1 - A double spike method for K-Ar measurement; a technique for high-precision in situ dating on Mars and other planetary surfaces AN - 1400619739; 2013-053764 AB - A new method for K-Ar dating using a double isotope dilution technique is proposed and demonstrated. The method is designed to eliminate known difficulties facing in situ dating on planetary surfaces, especially instrument complexity and power availability. It may also have applicability in some terrestrial dating applications. Key to the method is the use of a solid tracer spike enriched in both (super 39) Ar and (super 41) K. When mixed with lithium borate flux in a Knudsen effusion cell, this tracer spike and a sample to be dated can be successfully fused and degassed of Ar at <1000 degrees C. The evolved (super 40) Ar (super *) / (super 39) Ar ratio can be measured to high precision using noble gas mass spectrometry. After argon measurement the sample melt is heated to a slightly higher temperature ( approximately 1030 degrees C) to volatilize potassium, and the evolved (super 39) K/ (super 41) K ratio measured by Knudsen effusion mass spectrometry. Combined with the known composition of the tracer spike, these two ratios define the K-Ar age using a single sample aliquot and without the need for extreme temperature or a mass determination. In principle the method can be implemented using a single mass spectrometer. Experiments indicate that quantitative extraction of argon from a basalt sample occurs at a sufficiently low temperature that potassium loss in this step is unimportant. Similarly, potassium isotope ratios measured in the Knudsen apparatus indicate good sample-spike equilibration and acceptably small isotopic fractionation. When applied to a flood basalt from the Viluy Traps, Siberia, a K-Ar age of 351+ or -19 Ma was obtained, a result within 1% of the independently known age. For practical reasons this measurement was made on two separate mass spectrometers, but a scheme for combining the measurements in a single analytical instrument is described. Because both parent and daughter are determined by isotope dilution, the precision on K-Ar ages obtained by the double isotope dilution method should routinely approach that of a pair of isotope ratio determinations, likely better than + or -5%. Abstract Copyright (2013) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Farley, K A AU - Hurowitz, J A AU - Asimow, P D AU - Jacobson, N S AU - Cartwright, J A Y1 - 2013/06/01/ PY - 2013 DA - 2013 Jun 01 SP - 1 EP - 12 PB - Elsevier, New York, NY VL - 110 SN - 0016-7037, 0016-7037 KW - methods KW - Mississippian KW - volcanic rocks KW - isotopes KW - igneous rocks KW - mass spectra KW - Mars KW - electron probe data KW - K/K KW - Siberia KW - radioactive isotopes KW - dates KW - basalts KW - absolute age KW - spectra KW - Asia KW - geochemistry KW - Viluy Traps KW - Paleozoic KW - isotope ratios KW - Carboniferous KW - terrestrial planets KW - Siberian Traps KW - planets KW - K/Ar KW - mathematical methods KW - SEM data KW - 03:Geochronology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1400619739?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=A+double+spike+method+for+K-Ar+measurement%3B+a+technique+for+high-precision+in+situ+dating+on+Mars+and+other+planetary+surfaces&rft.au=Farley%2C+K+A%3BHurowitz%2C+J+A%3BAsimow%2C+P+D%3BJacobson%2C+N+S%3BCartwright%2C+J+A&rft.aulast=Farley&rft.aufirst=K&rft.date=2013-06-01&rft.volume=110&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.2013.02.010 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2013-01-01 N1 - Number of references - 40 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2013-07-18 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - absolute age; Asia; basalts; Carboniferous; dates; electron probe data; geochemistry; igneous rocks; isotope ratios; isotopes; K/Ar; K/K; Mars; mass spectra; mathematical methods; methods; Mississippian; Paleozoic; planets; radioactive isotopes; SEM data; Siberia; Siberian Traps; spectra; terrestrial planets; Viluy Traps; volcanic rocks DO - http://dx.doi.org/10.1016/j.gca.2013.02.010 ER - TY - JOUR T1 - Clasts in the CM2 carbonaceous chondrite Lonewolf Nunataks 94101; evidence for aqueous alteration prior to complex mixing AN - 1400616357; 2013-054320 AB - Clasts in the CM2 carbonaceous chondrite Lonewolf Nunataks (LON) 94101 have been characterized using scanning and transmission electron microscopy and electron microprobe analysis to determine their degrees of aqueous alteration, and the timing of alteration relative to incorporation of clasts into the host. The provenance of the clasts, and the mechanism by which they were incorporated and mixed with their host material are also considered. Results show that at least five distinct types of clasts occur in LON 94101, of which four have been aqueously altered to various degrees and one is largely anhydrous. The fact that they have had different alteration histories implies that the main part of aqueous activity occurred prior to the mixing and assimilation of the clasts with their host. Further, the presence of such a variety of clasts suggests complex mixing in a dynamic environment involving material from various sources. Two of the clasts, one containing approximately 46 vol% carbonate and the other featuring crystals of pyrrhotite up to approximately 1 mm in size, are examples of unusual lithologies and indicate concentration of chemical elements in discrete areas of the parent body(ies), possibly by flow of aqueous solutions. Abstract Copyright The Meteoritical Society, 2013. JF - Meteoritics & Planetary Science AU - Lindgren, Paula AU - Lee, Martin R AU - Sofe, Mahmood R AU - Zolensky, Michael E Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 1074 EP - 1090 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 6 SN - 1086-9379, 1086-9379 KW - stony meteorites KW - parent bodies KW - clasts KW - carbonaceous chondrites KW - impacts KW - TEM data KW - electron probe data KW - aqueous alteration KW - provenance KW - meteorites KW - Lonewolf Nunataks Meteorites KW - Raman spectra KW - mixing KW - petrography KW - LON 94101 KW - spectra KW - CM chondrites KW - chondrites KW - sulfides KW - pyrrhotite KW - carbonates KW - SEM data KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1400616357?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Clasts+in+the+CM2+carbonaceous+chondrite+Lonewolf+Nunataks+94101%3B+evidence+for+aqueous+alteration+prior+to+complex+mixing&rft.au=Lindgren%2C+Paula%3BLee%2C+Martin+R%3BSofe%2C+Mahmood+R%3BZolensky%2C+Michael+E&rft.aulast=Lindgren&rft.aufirst=Paula&rft.date=2013-06-01&rft.volume=48&rft.issue=6&rft.spage=1074&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12133 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2013-01-01 N1 - Number of references - 64 N1 - PubXState - AR N1 - Document feature - illus. incl. 4 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2013-07-18 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - aqueous alteration; carbonaceous chondrites; carbonates; chondrites; clasts; CM chondrites; electron probe data; impacts; LON 94101; Lonewolf Nunataks Meteorites; meteorites; mixing; parent bodies; petrography; provenance; pyrrhotite; Raman spectra; SEM data; spectra; stony meteorites; sulfides; TEM data DO - http://dx.doi.org/10.1111/maps.12133 ER - TY - JOUR T1 - Observing changing ecological diversity in the Anthropocene AN - 1399922685; 18230112 AB - As the world enters the Anthropocene - a new geologic period, defined by humanity's massive impact on the planet - the Earth's rapidly changing environment is putting critical ecosystem services at risk. To understand and forecast how ecosystems will change over the coming decades, scientists will require an understanding of the sensitivity of species to environmental change. The current distribution of species and functional groups provides valuable information about the performance of various species in different environments. However, when the rate of environmental change is high, information inherent in the ranges of many species will disappear, since that information exists only under more or less steady-state conditions. The amount of information about species' relationships to climate declines as their distributions move farther from steady state. New remote-sensing technologies can map the chemical and structural traits of plant canopies and will allow for the inference of traits and, in many cases, species' ranges. Current satellite remote-sensing data can only produce relatively simple classifications, but new techniques will produce data with dramatically higher biological information content. JF - Frontiers in Ecology and the Environment AU - Schimel, D S AU - Asner, G P AU - Moorcroft, P AD - Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA, david.schimel@jpl.nasa.gov Y1 - 2013/06// PY - 2013 DA - Jun 2013 SP - 129 EP - 137 VL - 11 IS - 3 SN - 1540-9295, 1540-9295 KW - Ecology Abstracts KW - Canopies KW - Environmental changes KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1399922685?accountid=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=Frontiers+in+Ecology+and+the+Environment&rft.atitle=Observing+changing+ecological+diversity+in+the+Anthropocene&rft.au=Schimel%2C+D+S%3BAsner%2C+G+P%3BMoorcroft%2C+P&rft.aulast=Schimel&rft.aufirst=D&rft.date=2013-06-01&rft.volume=11&rft.issue=3&rft.spage=129&rft.isbn=&rft.btitle=&rft.title=Frontiers+in+Ecology+and+the+Environment&rft.issn=15409295&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-07-01 N1 - Last updated - 2014-02-11 N1 - SubjectsTermNotLitGenreText - Environmental changes ER - TY - JOUR T1 - Modified Hitschfeld-Bordan Equations for Attenuation-Corrected Radar Rain Reflectivity: Application to Nonuniform Beamfilling at Off-Nadir Incidence AN - 1399921858; 18227178 AB - As shown by Takahashi et al., multiple path attenuation estimates over the field of view of an airborne or spaceborne weather radar are feasible for off-nadir incidence angles. This follows from the fact that the surface reference technique, which provides path attenuation estimates, can be applied to each radar range gate that intersects the surface. This study builds on this result by showing that three of the modified Hitschfeld-Bordan estimates for the attenuation-corrected radar reflectivity factor can be generalized to the case where multiple path attenuation estimates are available, thereby providing a correction to the effects of nonuniform beamfilling. A simple simulation is presented showing some strengths and weaknesses of the approach. JF - Journal of Atmospheric and Oceanic Technology AU - Meneghini, Robert AU - Liao, Liang AD - NASA Goddard Space Flight Center, Greenbelt, Maryland Y1 - 2013/06// PY - 2013 DA - Jun 2013 SP - 1149 EP - 1160 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 30 IS - 6 SN - 0739-0572, 0739-0572 KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Aqualine Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Marine KW - Weather KW - Airborne sensing KW - Radar range KW - Reflectance KW - Mathematical models KW - Gates KW - Strength KW - Weather radar KW - Numerical simulations KW - Radar reflectivity KW - Radar KW - Rain KW - SW 5040:Data acquisition KW - AQ 00006:Sewage KW - M2 551.578.1:Liquid (551.578.1) KW - Q2 09244:Air-sea coupling UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1399921858?accountid=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+Atmospheric+and+Oceanic+Technology&rft.atitle=Modified+Hitschfeld-Bordan+Equations+for+Attenuation-Corrected+Radar+Rain+Reflectivity%3A+Application+to+Nonuniform+Beamfilling+at+Off-Nadir+Incidence&rft.au=Meneghini%2C+Robert%3BLiao%2C+Liang&rft.aulast=Meneghini&rft.aufirst=Robert&rft.date=2013-06-01&rft.volume=30&rft.issue=6&rft.spage=1149&rft.isbn=&rft.btitle=&rft.title=Journal+of+Atmospheric+and+Oceanic+Technology&rft.issn=07390572&rft_id=info:doi/10.1175%2FJTECH-D-12-00192.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-07-01 N1 - Number of references - 19 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Airborne sensing; Mathematical models; Reflectance; Radar; Weather radar; Radar range; Radar reflectivity; Numerical simulations; Weather; Strength; Gates; Rain; Marine DO - http://dx.doi.org/10.1175/JTECH-D-12-00192.1 ER - TY - JOUR T1 - Global Calibration of the GEOS-5 L-Band Microwave Radiative Transfer Model over Nonfrozen Land Using SMOS Observations AN - 1399916950; 18187334 AB - A zero-order (tau-omega) microwave radiative transfer model (RTM) is coupled to the Goddard Earth Observing System, version 5 (GEOS-5) catchment land surface model in preparation for the future assimilation of global brightness temperatures (Tb) from the L-band (1.4 GHz) Soil Moisture Ocean Salinity (SMOS) and Soil Moisture Active Passive (SMAP) missions. Simulations using literature values for the RTM parameters result in Tb biases of 10-50 K against SMOS observations. Multiangular SMOS observations during nonfrozen conditions from 1 July 2011 to 1 July 2012 are used to calibrate parameters related to the microwave roughness h, vegetation opacity tau and/or scattering albedo omega separately for each observed 36-km land grid cell. A particle swarm optimization is used to minimize differences in the long-term (climatological) mean values and standard deviations between SMOS observations and simulations, without attempting to reduce the shorter-term (seasonal to daily) errors. After calibration, global Tb simulations for the validation year (1 July 2010 to 1 July 2011) are largely unbiased for multiple incidence angles and both H and V polarization [e.g., the global average absolute difference is 2.7 K for Tb sub(H)(42.5 degree ), i.e., at 42.5 degree incidence angle]. The calibrated parameter values depend to some extent on the specific land surface conditions simulated by the GEOS-5 system and on the scale of the SMOS observations, but they also show realistic spatial distributions. Aggregating the calibrated parameter values by vegetation class prior to using them in the RTM maintains low global biases but increases local biases [e.g., the global average absolute difference is 7.1 K for Tb sub(H)(42.5 degree )]. JF - Journal of Hydrometeorology AU - M. De Lannoy, Gabrieelle J AU - Reichle, Rolf H AU - N Pauwels, Valentijn R AD - NASA Goddard Space Flight Center, Greenbelt, Maryland, and Laboratory of Hydrology and Water Management, Ghent University, Ghent, Belgium Y1 - 2013/06// PY - 2013 DA - Jun 2013 SP - 765 EP - 785 VL - 14 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 - Catchment area KW - Spatial distribution KW - Soil Water KW - Data assimilation KW - Surface radiation temperature KW - Climate and vegetation KW - Microwave radiative transfer KW - Microwaves KW - Calibrations KW - Catchment basins KW - Ocean-atmosphere system KW - Modelling KW - Marine KW - Albedo KW - Climate KW - Temperature KW - Vegetation KW - Polarization KW - Model Studies KW - Hydrometeorology KW - Numerical simulations KW - Moisture Content KW - Brightness temperature KW - Radiative transfer KW - Soil moisture KW - SW 5010:Network design KW - Q2 09223:Optical properties KW - AQ 00002:Water Quality KW - M2 556.14:Infiltration/Soil Moisture (556.14) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1399916950?accountid=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=Global+Calibration+of+the+GEOS-5+L-Band+Microwave+Radiative+Transfer+Model+over+Nonfrozen+Land+Using+SMOS+Observations&rft.au=M.+De+Lannoy%2C+Gabrieelle+J%3BReichle%2C+Rolf+H%3BN+Pauwels%2C+Valentijn+R&rft.aulast=M.+De+Lannoy&rft.aufirst=Gabrieelle&rft.date=2013-06-01&rft.volume=14&rft.issue=3&rft.spage=765&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrometeorology&rft.issn=1525755X&rft_id=info:doi/10.1175%2FJHM-D-12-092.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-07-01 N1 - Number of references - 78 N1 - Last updated - 2014-05-02 N1 - SubjectsTermNotLitGenreText - Catchment area; Microwaves; Albedo; Climate; Ocean-atmosphere system; Radiative transfer; Polarization; Surface radiation temperature; Modelling; Climate and vegetation; Microwave radiative transfer; Spatial distribution; Catchment basins; Numerical simulations; Brightness temperature; Soil moisture; Data assimilation; Hydrometeorology; Calibrations; Temperature; Vegetation; Moisture Content; Soil Water; Model Studies; Marine DO - http://dx.doi.org/10.1175/JHM-D-12-092.1 ER - TY - JOUR T1 - Adaptation in Locomotor Stability, Cognition, and Metabolic Cost During Sensory Discordance AN - 1399915906; 18194159 AB - Background: Locomotor instability may affect planetary extravehicular activities during the initial adaptation to the new gravitational environment. The goal of this study was to quantify the locomotor, cognitive, and metabolic effects of exposure to a discordant sensory environment. Methods: A treadmill mounted on a 6-degree-of-freedom motion base was used to present 15 healthy subjects with a destabilizing support surface while they walked. Dependent measures of locomotor stability, cognitive load, and metabolic cost were stride frequency (SF), reaction time (RT), and the volume of oxygen consumed (Vo(2)), respectively. Subjects completed an 8-min baseline walk followed by 20 min of walking with a continuous, sinusoidal, laterally oscillating support-surface perturbation. Data for minutes 1, 7, 13, and 20 of the support-surface perturbation period were compared with the baseline. Results: SF, RT, and Vo(2) were significantly greater during support-surface motion than during the baseline walking condition and showed a trend toward recovery to baseline levels during the perturbation period. Results demonstrated that adaptation to walking in a discordant sensory environment has quantifiable and significant costs in SF, RT, and Vo(2) as shown by mean increases of 9%, 20%, and 4%, respectively, collected during the first minute of exposure. By the fourth minute of exposure, mean Vo(2) consumption had increased to 20% over its baseline. Discussion: We believe that preflight sensorimotor adaptation training paradigms will impart gains in stability and the ability to multitask, and might increase productive mission time by extending work time in extravehicular activity suits where metabolic expenditure is a limiting factor. JF - Aviation, Space, and Environmental Medicine AU - Peters, B T AU - Brady, R A AU - Batson, C D AU - Guined, J R AU - Ploutz-Snyder, R J AU - Mulavara, A P AU - Bloomberg, J J AD - Wyle Science, Technology & Engineering Group, 1290 Hercules Drive, Suite 120, Houston, TX 77058, brian.peters-l@nasa.gov Y1 - 2013/06// PY - 2013 DA - Jun 2013 SP - 567 EP - 572 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 6 SN - 0095-6562, 0095-6562 KW - CSA Neurosciences Abstracts; Health & Safety Science Abstracts KW - Adaptations KW - Data processing KW - Training KW - Gravity KW - Walking KW - Limiting factors KW - sensorimotor system KW - Oxygen KW - Adaptability KW - Cognitive ability KW - Reaction time task KW - Discordance KW - N3 11001:Behavioral and Cognitive Neuroscience KW - H 2000:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1399915906?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=Adaptation+in+Locomotor+Stability%2C+Cognition%2C+and+Metabolic+Cost+During+Sensory+Discordance&rft.au=Peters%2C+B+T%3BBrady%2C+R+A%3BBatson%2C+C+D%3BGuined%2C+J+R%3BPloutz-Snyder%2C+R+J%3BMulavara%2C+A+P%3BBloomberg%2C+J+J&rft.aulast=Peters&rft.aufirst=B&rft.date=2013-06-01&rft.volume=84&rft.issue=6&rft.spage=567&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/10.3357%2FASEM.3529.2013 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-07-01 N1 - Number of references - 29 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Oxygen; sensorimotor system; Data processing; Adaptations; Gravity; Reaction time task; Cognitive ability; Discordance; Walking; Limiting factors; Adaptability; Training DO - http://dx.doi.org/10.3357/ASEM.3529.2013 ER - TY - JOUR T1 - RNA with iron(II) as a cofactor catalyses electron transfer AN - 1399912887; 18131570 AB - Mg super(2+) is essential for RNA folding and catalysis. However, for the first 1.5 billion years of life on Earth RNA inhabited an anoxic Earth with abundant and benign Fe super(2+). We hypothesize that Fe super(2+) was an RNA cofactor when iron was abundant, and was substantially replaced by Mg super(2+) during a period known as the 'great oxidation', brought on by photosynthesis. Here, we demonstrate that reversing this putative metal substitution in an anoxic environment, by removing Mg super(2+) and replacing it with Fe super(2+), expands the catalytic repertoire of RNA. Fe super(2+) can confer on some RNAs a previously uncharacterized ability to catalyse single-electron transfer. We propose that RNA function, in analogy with protein function, can be understood fully only in the context of association with a range of possible metals. The catalysis of electron transfer, requisite for metabolic activity, may have been attenuated in RNA by photosynthesis and the rise of O sub(2). JF - Nature Chemistry AU - Hsiao, Chiaolong AU - Chou, I-Chun AU - Okafor, CDenise AU - Bowman, Jessica C AU - O'Neill, Eric B AU - Athavale, Shreyas S AU - Petrov, Anton S AU - Hud, Nicholas V AU - Wartell, Roger M AU - Harvey, Stephen C AU - Williams, Loren Dean AD - School of Chemistry and Biochemistry, School of Biology, and NASA Astrobiology Institute Center for Ribosomal Origins and Evolution, Georgia Institute of Technology, Atlanta, Georgia 30332, USA Y1 - 2013/06// PY - 2013 DA - Jun 2013 SP - 525 EP - 528 PB - Nature Publishing Group, The Macmillan Building London N1 9XW United Kingdom VL - 5 IS - 6 SN - 1755-4330, 1755-4330 KW - Biochemistry Abstracts 2: Nucleic Acids; Environment Abstracts KW - Metals KW - Photosynthesis KW - Heavy metals KW - Electron transfer KW - Cofactors KW - RNA KW - Oxidation KW - Proteins KW - Magnesium KW - Iron KW - Catalysis KW - Benign KW - N 14830:RNA KW - ENA 07:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1399912887?accountid=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=Nature+Chemistry&rft.atitle=RNA+with+iron%28II%29+as+a+cofactor+catalyses+electron+transfer&rft.au=Hsiao%2C+Chiaolong%3BChou%2C+I-Chun%3BOkafor%2C+CDenise%3BBowman%2C+Jessica+C%3BO%27Neill%2C+Eric+B%3BAthavale%2C+Shreyas+S%3BPetrov%2C+Anton+S%3BHud%2C+Nicholas+V%3BWartell%2C+Roger+M%3BHarvey%2C+Stephen+C%3BWilliams%2C+Loren+Dean&rft.aulast=Hsiao&rft.aufirst=Chiaolong&rft.date=2013-06-01&rft.volume=5&rft.issue=6&rft.spage=525&rft.isbn=&rft.btitle=&rft.title=Nature+Chemistry&rft.issn=17554330&rft_id=info:doi/10.1038%2Fnchem.1649 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-07-01 N1 - Last updated - 2013-11-04 N1 - SubjectsTermNotLitGenreText - Cofactors; Photosynthesis; RNA; Heavy metals; Oxidation; Electron transfer; Magnesium; Iron; Benign; Catalysis; Metals; Proteins DO - http://dx.doi.org/10.1038/nchem.1649 ER - TY - JOUR T1 - Interdecadal variability/long-term changes in global precipitation patterns during the past three decades: global warming and/or pacific decadal variability? AN - 1367495669; 18090196 AB - This study explores how global precipitation and tropospheric water vapor content vary on the interdecadal/long-term time scale during past three decades (1988-2010 for water vapor), in particular to what extent the spatial structures of their variations relate to changes in surface temperature. EOF analyses of satellite-based products indicate that the first two modes of global precipitation and columnar water vapor content anomalies are in general related to the El Nino-Southern oscillation. The spatial patterns of their third modes resemble the corresponding linear fits/trends estimated at each grid point, which roughly represent the interdecadal/long-term changes happening during the same time period. Global mean sea surface temperature (SST) and land surface temperature have increased during the past three decades. However, the water vapor and precipitation patterns of change do not reflect the pattern of warming, in particular in the tropical Pacific basin. Therefore, other mechanisms in addition to global warming likely exist to account for the spatial structures of global precipitation changes during this time period. An EOF analysis of longer-record (1949-2010) SST anomalies within the Pacific basin (60 super(o)N-60 super(o)S) indicates the existence of a strong climate regime shift around 1998/1999, which might be associated with the Pacific decadal variability (PDV) as suggested in past studies. Analyses indicate that the observed linear changes/trends in both precipitation and tropospheric water vapor during 1988-2010 seem to result from a combined impact of global mean surface warming and the PDV shift. In particular, in the tropical central-eastern Pacific, a band of increases along the equator in both precipitation and water vapor sandwiched by strong decreases south and north of it are likely caused by the opposite effects from global-mean surface warming and PDV-related, La Nina-like cooling in the tropical central-eastern Pacific. This narrow band of precipitation increase could also be considered an evidence for the influence of global mean surface warming. JF - Climate Dynamics AU - Gu, Guojun AU - Adler, Robert F AD - Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, USA, Guojun.Gu-1@nasa.govaff2 Y1 - 2013/06// PY - 2013 DA - June 2013 SP - 3009 EP - 3022 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 40 IS - 11-12 SN - 0930-7575, 0930-7575 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Sustainability Science Abstracts; Meteorological & Geoastrophysical Abstracts KW - Hydrological Regime KW - Surface temperatures KW - Water Vapor KW - Variability KW - Spatial distribution KW - Rainfall KW - Climate change KW - Basins KW - Empirical orthogonal functions KW - Water vapor content KW - IS, Tropical Pacific KW - INW, Pacific Basin KW - Sea surface temperature anomalies KW - Sea surface temperatures KW - Atmospheric precipitations KW - Water vapor KW - Climates KW - Temperature KW - Global precipitation KW - Troposphere KW - Greenhouse effect KW - Precipitation KW - Global Warming KW - Cooling KW - Ecosystem disturbance KW - Long-term changes KW - Global warming KW - Precipitation patterns KW - SW 0810:General KW - M3 1010:Issues in Sustainable Development KW - M2 551.588:Environmental Influences (551.588) KW - Q2 09244:Air-sea coupling UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1367495669?accountid=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=Climate+Dynamics&rft.atitle=Interdecadal+variability%2Flong-term+changes+in+global+precipitation+patterns+during+the+past+three+decades%3A+global+warming+and%2For+pacific+decadal+variability%3F&rft.au=Gu%2C+Guojun%3BAdler%2C+Robert+F&rft.aulast=Gu&rft.aufirst=Guojun&rft.date=2013-06-01&rft.volume=40&rft.issue=11-12&rft.spage=3009&rft.isbn=&rft.btitle=&rft.title=Climate+Dynamics&rft.issn=09307575&rft_id=info:doi/10.1007%2Fs00382-012-1443-8 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-06-01 N1 - Number of references - 44 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Atmospheric precipitations; Long-term changes; Climate change; Troposphere; Greenhouse effect; Ecosystem disturbance; Surface temperatures; Sea surface temperature anomalies; Global precipitation; Global warming; Empirical orthogonal functions; Water vapor content; Precipitation; Sea surface temperatures; Precipitation patterns; Spatial distribution; Water vapor; Rainfall; Temperature; Basins; Hydrological Regime; Variability; Water Vapor; Climates; Cooling; Global Warming; IS, Tropical Pacific; INW, Pacific Basin DO - http://dx.doi.org/10.1007/s00382-012-1443-8 ER - TY - NEWS T1 - Frigid Heat: How Ice can Menace a Hot Engine AN - 1356718151 JF - UPI Space Daily AU - Nancy Smith Kilkenny for Glenn Research Center Y1 - 2013/05/30/ PY - 2013 DA - 2013 May 30 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356718151?accountid=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=Frigid+Heat%3A+How+Ice+can+Menace+a+Hot+Engine&rft.au=Nancy+Smith+Kilkenny+for+Glenn+Research+Center&rft.aulast=Nancy+Smith+Kilkenny+for+Glenn+Research+Center&rft.aufirst=&rft.date=2013-05-30&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 - 2013-05-31 ER - TY - NEWS T1 - Morton Arboretum Partners with NASA to Understand why Trees Fail AN - 1356042424 JF - UPI Space Daily AU - Nancy Smith Kilkenny for Glenn Research Center Y1 - 2013/05/29/ PY - 2013 DA - 2013 May 29 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356042424?accountid=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=Morton+Arboretum+Partners+with+NASA+to+Understand+why+Trees+Fail&rft.au=Nancy+Smith+Kilkenny+for+Glenn+Research+Center&rft.aulast=Nancy+Smith+Kilkenny+for+Glenn+Research+Center&rft.aufirst=&rft.date=2013-05-29&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 - 2013-05-29 ER - TY - JOUR T1 - Variability in the surface temperature and melt extent of the Greenland ice sheet from MODIS AN - 1464887621; 2013-093248 AB - Satellite-derived moderate-resolution imaging spectroradiometer (MODIS) ice-surface temperature (IST) of the Greenland ice sheet shows a positive trend and two major melt events from 2000 to present. IST increased by approximately 0.55 + or - 0.44 degrees C/decade, with the greatest increase ( approximately 0.95 + or - 0.44 degrees C/decade) found in northwestern Greenland where coastal temperatures and mass loss are also increasing and outlet glaciers are accelerating. IST shows the highest rates of increase during summer ( approximately 1.35 + or - 0.47 degrees C/decade) and winter ( approximately 1.30 + or - 1.53 degrees C/decade), followed by spring ( approximately 60 + or - 0.98 degrees C/decade). In contrast, a decrease in IST was found in the autumn ( approximately .49 + or - 1.20 degrees C/decade). The IST trends in this work are not statistically significant with the exception of the trend in northwestern Greenland. Major surface melt (covering 80% or more of the ice sheet) occurred during the 2002 and 2012 melt seasons where clear-sky measurements show a maximum melt of approximately 87% and approximately 95% of the ice sheet surface, respectively. In 2002, most of the extraordinary melt was ephemeral, whereas in 2012 the ice sheet not only experienced more total melt, but melt was more persistent, and the 2012 summer was the warmest in the MODIS record (-6.38 + or - 3.98 degrees C). Our data show that major melt events may not be particularly rare during the present period of ice sheet warming. Abstract Copyright (2013), American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Hall, Dorothy K AU - Comiso, Josefino C AU - DiGirolamo, Nicolo E AU - Shuman, Christopher A AU - Box, Jason E AU - Koenig, Lora S Y1 - 2013/05/28/ PY - 2013 DA - 2013 May 28 SP - 2114 EP - 2120 PB - American Geophysical Union, Washington, DC VL - 40 IS - 10 SN - 0094-8276, 0094-8276 KW - Arctic region KW - Greenland ice sheet KW - ice cover KW - glaciers KW - satellite methods KW - ice sheets KW - deglaciation KW - temperature KW - Greenland KW - melting KW - mass balance KW - glacial geology KW - remote sensing KW - MODIS KW - meltwater KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1464887621?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Variability+in+the+surface+temperature+and+melt+extent+of+the+Greenland+ice+sheet+from+MODIS&rft.au=Hall%2C+Dorothy+K%3BComiso%2C+Josefino+C%3BDiGirolamo%2C+Nicolo+E%3BShuman%2C+Christopher+A%3BBox%2C+Jason+E%3BKoenig%2C+Lora+S&rft.aulast=Hall&rft.aufirst=Dorothy&rft.date=2013-05-28&rft.volume=40&rft.issue=10&rft.spage=2114&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2Fgrl.50240 L2 - http://www.agu.org/journals/gl/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2013-01-01 N1 - PubXState - DC N1 - Last updated - 2013-12-05 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - Arctic region; deglaciation; glacial geology; glaciers; Greenland; Greenland ice sheet; ice cover; ice sheets; mass balance; melting; meltwater; MODIS; remote sensing; satellite methods; temperature DO - http://dx.doi.org/10.1002/grl.50240 ER - TY - JOUR T1 - Tropical Atlantic dust and smoke aerosol variations related to the Madden-Julian Oscillation in MODIS and 0MISR observations AN - 1492583794; 2014-005543 AB - In this study, Moderate Resolution Imaging Spectroradiometer (MODIS) fine mode fraction and Multi-angle Imaging SpectroRadiometer (MISR) nonspherical fraction data are used to derive dust and smoke aerosol optical thickness (tau (sub dust) and tau (sub smoke) ) over the tropical Atlantic in a complementary way: due to its wider swath, MODIS has 3-4 times greater sampling than MISR, but MISR dust discrimination is based on particle shape retrievals, whereas an empirical scheme is used for MODIS. MODIS and MISR show very similar dust and smoke winter climatologies. tau (sub dust) is the dominant aerosol component over the tropical Atlantic, accounting for 40-70% of the total aerosol optical thickness (AOT), whereas tau (sub smoke) is significantly smaller than tau (sub dust) . The consistency and high correlation between these climatologies and their daily variations lends confidence to their use for investigating the relative dust and smoke contributions to the total AOT variation associated with the Madden-Julian Oscillation (MJO). The temporal evolution and spatial patterns of the tau (sub dus) anomalies associated with the MJO are consistent between MODIS and MISR: the magnitude of MJO-realted tau (sub dust) anomalies is comparable to or even larger than that of the total tau , while the tau (sub smoke) anomaly represents about 15% compared to the total, which is quite different from their relative magnitudes to the total tau on the climatological time scale. This suggests that dust and smoke are not influenced by the MJO in the same way. Based on correlation analysis, dust is strongly influenced by the MJO-modulated trade wind and precipitation anomalies, and can last as long as one MJO phase, whereas smoke is less affected. Abstract Copyright (2013), American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Atmospheres AU - Guo, Yanjuan AU - Tian, Baijun AU - Kahn, Ralph A AU - Kalashnikova, Olga AU - Wong, Sun AU - Waliser, Duane E Y1 - 2013/05/27/ PY - 2013 DA - 2013 May 27 SP - 4947 EP - 4963 PB - Blackwell Wiley for American Geophysical Union, Washington, DC VL - 118 IS - 10 SN - 2169-897X, 2169-897X KW - tropical environment KW - clastic sediments KW - Madden-Julian Oscillation KW - satellite methods KW - climate change KW - optical properties KW - transport KW - atmospheric transport KW - dust KW - sediments KW - aerosols KW - Atlantic Ocean KW - remote sensing KW - MODIS KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1492583794?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Tropical+Atlantic+dust+and+smoke+aerosol+variations+related+to+the+Madden-Julian+Oscillation+in+MODIS+and+0MISR+observations&rft.au=Guo%2C+Yanjuan%3BTian%2C+Baijun%3BKahn%2C+Ralph+A%3BKalashnikova%2C+Olga%3BWong%2C+Sun%3BWaliser%2C+Duane+E&rft.aulast=Guo&rft.aufirst=Yanjuan&rft.date=2013-05-27&rft.volume=118&rft.issue=10&rft.spage=4947&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2Fjgrd.50409 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 - 2014-01-01 N1 - Number of references - 40 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - aerosols; Atlantic Ocean; atmospheric transport; clastic sediments; climate change; dust; Madden-Julian Oscillation; MODIS; optical properties; remote sensing; satellite methods; sediments; transport; tropical environment DO - http://dx.doi.org/10.1002/jgrd.50409 ER - TY - JOUR T1 - Sulfate availability and the geological record of cold-seep deposits AN - 1366816948; 2013-047963 AB - Cold-seep deposits are the remnants of ancient chemosynthetic ecosystems that derive energy from microbial anaerobic oxidation of methane (AOM) using seawater sulfate. They provide a physical record of a microbial process that plays a critical role in regulating biospheric methane. Although highly (super 13) C-depleted kerogen suggests that AOM dates back 2.7 b.y., puzzlingly, the oldest reported cold seeps only appear at 635 Ma and lack carbon isotopic signals (<-30 per mil Peedee belemnite) that are diagnostic of AOM in examples younger than 350 Ma. Using a one-dimensional biogeochemical reaction-transport model, we confirm that these discrepancies are an expected consequence of changes in seawater chemistry. More specifically, sub-millimolar (mM) to millimolar seawater sulfate concentrations ([SO (sub 4) (super 2-) ] (sub SW) ) and elevated concentrations of dissolved inorganic carbon that characterized seawater through much of the Precambrian limited AOM-driven carbonate supersaturation and (super 13) C depletion, making seep carbonates less likely to form and more challenging to identify. Moderate (super 13) C depletions observed in 420-370-m.y.-old cold-seep carbonates (independently identified by fossil assemblages and contextual and textural observations) indicate [SO (sub 4) (super 2-) ] (sub SW) < 5 mM in this interval. This is significant because low [SO (sub 4) (super 2-) ] (sub SW) has been linked to widespread ocean anoxia in the early Paleozoic, an environmental condition thought to have influenced the evolution, extinction, and recovery of early animals. JF - Geology (Boulder) AU - Bristow, Thomas F AU - Grotzinger, John P Y1 - 2013/05/24/ PY - 2013 DA - 2013 May 24 SP - 811 EP - 814 PB - Geological Society of America (GSA), Boulder, CO VL - 41 IS - 7 SN - 0091-7613, 0091-7613 KW - sea water KW - upper Precambrian KW - isotopes KW - one-dimensional models KW - cold seeps KW - aliphatic hydrocarbons KW - paleo-oceanography KW - stable isotopes KW - carbon KW - sedimentary structures KW - geochemistry KW - Neoproterozoic KW - methane KW - Precambrian KW - sulfates KW - isotope ratios KW - biogenic structures KW - oxidation KW - C-13/C-12 KW - Proterozoic KW - alkanes KW - hydrochemistry KW - Phanerozoic KW - organic compounds KW - hydrocarbons KW - anaerobic environment KW - carbonates KW - 12:Stratigraphy KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1366816948?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geology+%28Boulder%29&rft.atitle=Sulfate+availability+and+the+geological+record+of+cold-seep+deposits&rft.au=Bristow%2C+Thomas+F%3BGrotzinger%2C+John+P&rft.aulast=Bristow&rft.aufirst=Thomas&rft.date=2013-05-24&rft.volume=41&rft.issue=7&rft.spage=811&rft.isbn=&rft.btitle=&rft.title=Geology+%28Boulder%29&rft.issn=00917613&rft_id=info:doi/10.1130%2FG34265.1 L2 - http://www.gsajournals.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States | Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2013-01-01 N1 - Number of references - 34 N1 - PubXState - CO N1 - Document feature - illus. N1 - Last updated - 2013-07-18 N1 - CODEN - GLGYBA N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; anaerobic environment; biogenic structures; C-13/C-12; carbon; carbonates; cold seeps; geochemistry; hydrocarbons; hydrochemistry; isotope ratios; isotopes; methane; Neoproterozoic; one-dimensional models; organic compounds; oxidation; paleo-oceanography; Phanerozoic; Precambrian; Proterozoic; sea water; sedimentary structures; stable isotopes; sulfates; upper Precambrian DO - http://dx.doi.org/10.1130/G34265.1 ER - TY - NEWS T1 - New Public Application of Landsat Images Released AN - 1354413339 JF - UPI Space Daily AU - Steve Cole for NASA Earth Science News Y1 - 2013/05/23/ PY - 2013 DA - 2013 May 23 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1354413339?accountid=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=New+Public+Application+of+Landsat+Images+Released&rft.au=Steve+Cole+for+NASA+Earth+Science+News&rft.aulast=Steve+Cole+for+NASA+Earth+Science+News&rft.aufirst=&rft.date=2013-05-23&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 - 2013-05-23 ER - TY - NEWS T1 - Landsat Thermal Sensor Lights Up from Volcano's Heat AN - 1351211765 JF - UPI Space Daily AU - Kate Ramsayer for NASA Earth Science News Y1 - 2013/05/15/ PY - 2013 DA - 2013 May 15 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1351211765?accountid=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=Landsat+Thermal+Sensor+Lights+Up+from+Volcano%27s+Heat&rft.au=Kate+Ramsayer+for+NASA+Earth+Science+News&rft.aulast=Kate+Ramsayer+for+NASA+Earth+Science+News&rft.aufirst=&rft.date=2013-05-15&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 - 2013-05-15 ER - TY - NEWS T1 - Glow-in-the-Dark Plants on the ISS AN - 1350624759 JF - UPI Space Daily AU - Dr. Tony Phillips for NASA Science News Y1 - 2013/05/14/ PY - 2013 DA - 2013 May 14 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1350624759?accountid=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=Glow-in-the-Dark+Plants+on+the+ISS&rft.au=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2013-05-14&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 - 2013-05-14 ER - TY - NEWS T1 - See Saturn at its Best and Brightest AN - 1350244474 JF - UPI Space Daily AU - Dr. Tony Phillips for NASA Science News Y1 - 2013/05/13/ PY - 2013 DA - 2013 May 13 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1350244474?accountid=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=See+Saturn+at+its+Best+and+Brightest&rft.au=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2013-05-13&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 - 2013-05-13 ER - TY - NEWS T1 - Nothing Bugs These NASA Aeronautical Researchers AN - 1348960931 JF - UPI Space Daily AU - Jim Banke for NASA Aeronautics News Y1 - 2013/05/07/ PY - 2013 DA - 2013 May 07 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1348960931?accountid=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=Nothing+Bugs+These+NASA+Aeronautical+Researchers&rft.au=Jim+Banke+for+NASA+Aeronautics+News&rft.aulast=Jim+Banke+for+NASA+Aeronautics+News&rft.aufirst=&rft.date=2013-05-07&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 - 2013-05-07 ER - TY - JOUR T1 - Kepler-62; a five-planet system with planets of 1.4 and 1.6 Earth radii in the habitable zone AN - 1371764470; 2013-049712 AB - We present the detection of five planets--Kepler-62b, c, d, e, and f--of size 1.31, 0.54, 1.95, 1.61 and 1.41 Earth radii (R), orbiting a K2V star at periods of 5.7, 12.4, 18.2, 122.4, and 267.3 days, respectively. The outermost planets, Kepler-62e and -62f, are super--Earth-size (1.25 R < planet radius < or = 2.0 R) planets in the habitable zone of their host star, respectively receiving 1.2 + or - 0.2 times and 0.41 + or - 0.05 times the solar flux at Earth's orbit. Theoretical models of Kepler-62e and -62f for a stellar age of approximately 7 billion years suggest that both planets could be solid, either with a rocky composition or composed of mostly solid water in their bulk. JF - Science AU - Borucki, William J AU - Agol, Eric AU - Fressin, Francois AU - Kaltenegger, Lisa AU - Rowe, Jason AU - Isaacson, Howard AU - Fischer, Debra AU - Batalha, Natalie AU - Lissauer, Jack J AU - Marcy, Geoffrey W AU - Fabrycky, Daniel AU - Desert, Jean-Michel AU - Bryson, Stephen T AU - Barclay, Thomas AU - Bastien, Fabienne AU - Boss, Alan AU - Brugamyer, Erik AU - Buchhave, Lars A AU - Burke, Chris AU - Caldwell, Douglas A AU - Carter, Josh AU - Charbonneau, David AU - Crepp, Justin R AU - Christensen-Dalsgaard, Jorgen AU - Christiansen, Jessie L AU - Ciardi, David AU - Cochran, William D AU - DeVore, Edna AU - Doyle, Laurance AU - Dupree, Andrea K AU - Endl, Michael AU - Everett, Mark E AU - Ford, Eric B AU - Fortney, Jonathan AU - Gautier, Thomas N, III AU - Geary, John C AU - Gould, Alan AU - Haas, Michael AU - Henze, Christopher AU - Howard, Andrew W AU - Howell, Steve B AU - Huber, Daniel AU - Jenkins, Jon M AU - Kjeldsen, Hans AU - Kolbl, Rea AU - Kolodziejczak, Jeffery AU - Latham, David W AU - Lee, Brian L AU - Lopez, Eric AU - Mullally, Fergal AU - Orosz, Jerome A AU - Prsa, Andrej AU - Quintana, Elisa V AU - Sanchis-Ojeda, Roberto AU - Sasselov, Dimitar AU - Seader, Shawn AU - Shporer, Avi AU - Steffen, Jason H AU - Still, Martin AU - Tenenbaum, Peter AU - Thompson, Susan E AU - Torres, Guillermo AU - Twicken, Joseph D AU - Welsh, William F AU - Winn, Joshua N Y1 - 2013/05/03/ PY - 2013 DA - 2013 May 03 SP - 587 EP - 590 PB - American Association for the Advancement of Science, Washington, DC VL - 340 IS - 6132 SN - 0036-8075, 0036-8075 KW - albedo KW - solar system KW - extrasolar planets KW - orbits KW - Kepler 62 KW - planets KW - detection KW - habitability KW - stars KW - solar radiation KW - Kepler planetary system KW - interplanetary comparison KW - terrestrial comparison KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1371764470?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Kepler-62%3B+a+five-planet+system+with+planets+of+1.4+and+1.6+Earth+radii+in+the+habitable+zone&rft.au=Borucki%2C+William+J%3BAgol%2C+Eric%3BFressin%2C+Francois%3BKaltenegger%2C+Lisa%3BRowe%2C+Jason%3BIsaacson%2C+Howard%3BFischer%2C+Debra%3BBatalha%2C+Natalie%3BLissauer%2C+Jack+J%3BMarcy%2C+Geoffrey+W%3BFabrycky%2C+Daniel%3BDesert%2C+Jean-Michel%3BBryson%2C+Stephen+T%3BBarclay%2C+Thomas%3BBastien%2C+Fabienne%3BBoss%2C+Alan%3BBrugamyer%2C+Erik%3BBuchhave%2C+Lars+A%3BBurke%2C+Chris%3BCaldwell%2C+Douglas+A%3BCarter%2C+Josh%3BCharbonneau%2C+David%3BCrepp%2C+Justin+R%3BChristensen-Dalsgaard%2C+Jorgen%3BChristiansen%2C+Jessie+L%3BCiardi%2C+David%3BCochran%2C+William+D%3BDeVore%2C+Edna%3BDoyle%2C+Laurance%3BDupree%2C+Andrea+K%3BEndl%2C+Michael%3BEverett%2C+Mark+E%3BFord%2C+Eric+B%3BFortney%2C+Jonathan%3BGautier%2C+Thomas+N%2C+III%3BGeary%2C+John+C%3BGould%2C+Alan%3BHaas%2C+Michael%3BHenze%2C+Christopher%3BHoward%2C+Andrew+W%3BHowell%2C+Steve+B%3BHuber%2C+Daniel%3BJenkins%2C+Jon+M%3BKjeldsen%2C+Hans%3BKolbl%2C+Rea%3BKolodziejczak%2C+Jeffery%3BLatham%2C+David+W%3BLee%2C+Brian+L%3BLopez%2C+Eric%3BMullally%2C+Fergal%3BOrosz%2C+Jerome+A%3BPrsa%2C+Andrej%3BQuintana%2C+Elisa+V%3BSanchis-Ojeda%2C+Roberto%3BSasselov%2C+Dimitar%3BSeader%2C+Shawn%3BShporer%2C+Avi%3BSteffen%2C+Jason+H%3BStill%2C+Martin%3BTenenbaum%2C+Peter%3BThompson%2C+Susan+E%3BTorres%2C+Guillermo%3BTwicken%2C+Joseph+D%3BWelsh%2C+William+F%3BWinn%2C+Joshua+N&rft.aulast=Borucki&rft.aufirst=William&rft.date=2013-05-03&rft.volume=340&rft.issue=6132&rft.spage=587&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.1234702 L2 - http://www.sciencemag.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 26 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2013-06-27 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - albedo; detection; extrasolar planets; habitability; interplanetary comparison; Kepler 62; Kepler planetary system; orbits; planets; remote sensing; solar radiation; solar system; stars; terrestrial comparison DO - http://dx.doi.org/10.1126/science.1234702 ER - TY - JOUR T1 - 3D reconstruction of the source and scale of buried young flood channels on Mars AN - 1371763955; 2013-049713 AB - Outflow channels on Mars are interpreted as the product of gigantic floods due to the catastrophic eruption of groundwater that may also have initiated episodes of climate change. Marte Vallis, the largest of the young martian outflow channels (<500 million years old), is embayed by lava flows that hinder detailed studies and comparisons with older channel systems. Understanding Marte Vallis is essential to our assessment of recent Mars hydrologic activity during a period otherwise considered to be cold and dry. Using data from the Shallow Radar sounder on the Mars Reconnaissance Orbiter, we present a three-dimensional (3D) reconstruction of buried channels on Mars and provide estimates of paleohydrologic parameters. Our work shows that Cerberus Fossae provided the waters that carved Marte Vallis, and it extended an additional 180 kilometers to the east before the emplacement of the younger lava flows. We identified two stages of channel incision and determined that channel depths were more than twice those of previous estimates. JF - Science AU - Morgan, Gareth A AU - Campbell, Bruce A AU - Carter, Lynn M AU - Plaut, Jeffrey J AU - Phillips, Roger J Y1 - 2013/05/03/ PY - 2013 DA - 2013 May 03 SP - 607 EP - 610 PB - American Association for the Advancement of Science, Washington, DC VL - 340 IS - 6132 SN - 0036-8075, 0036-8075 KW - lava flows KW - three-dimensional models KW - SHARAD KW - channels KW - Mars Reconnaissance Orbiter KW - Mars KW - Hesperian KW - climate change KW - ground water KW - terrestrial planets KW - planets KW - sounding KW - fluvial features KW - floods KW - Marte Vallis KW - reconstruction KW - buried features KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1371763955?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=3D+reconstruction+of+the+source+and+scale+of+buried+young+flood+channels+on+Mars&rft.au=Morgan%2C+Gareth+A%3BCampbell%2C+Bruce+A%3BCarter%2C+Lynn+M%3BPlaut%2C+Jeffrey+J%3BPhillips%2C+Roger+J&rft.aulast=Morgan&rft.aufirst=Gareth&rft.date=2013-05-03&rft.volume=340&rft.issue=6132&rft.spage=607&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.1234787 L2 - http://www.sciencemag.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 24 N1 - PubXState - DC N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2013-06-27 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - buried features; channels; climate change; floods; fluvial features; ground water; Hesperian; lava flows; Mars; Mars Reconnaissance Orbiter; Marte Vallis; planets; reconstruction; SHARAD; sounding; terrestrial planets; three-dimensional models DO - http://dx.doi.org/10.1126/science.1234787 ER - TY - NEWS T1 - New NASA Satellite Takes the Salton Sea's Temperature AN - 1347646218 JF - UPI Space Daily AU - Kate Ramsayer for NASA's Earth Science News Y1 - 2013/05/02/ PY - 2013 DA - 2013 May 02 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1347646218?accountid=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=New+NASA+Satellite+Takes+the+Salton+Sea%27s+Temperature&rft.au=Kate+Ramsayer+for+NASA%27s+Earth+Science+News&rft.aulast=Kate+Ramsayer+for+NASA%27s+Earth+Science+News&rft.aufirst=&rft.date=2013-05-02&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 - 2013-05-02 ER - TY - NEWS T1 - NASA's HyspIRI: Seeing the Forest and the Trees and More AN - 1347646004 JF - UPI Space Daily AU - Kathryn Hansen for NASA's Earth Science News Y1 - 2013/05/02/ PY - 2013 DA - 2013 May 02 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1347646004?accountid=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%27s+HyspIRI%3A+Seeing+the+Forest+and+the+Trees+and+More&rft.au=Kathryn+Hansen+for+NASA%27s+Earth+Science+News&rft.aulast=Kathryn+Hansen+for+NASA%27s+Earth+Science+News&rft.aufirst=&rft.date=2013-05-02&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 - 2013-05-02 ER - TY - JOUR T1 - CROSS-CORRELATIONS AS A COSMOLOGICAL CARBON MONOXIDE DETECTOR AN - 1722170157; PQ0002093709 AB - We present a new procedure to measure the large-scale carbon monoxide (CO) emissions across cosmic history. As a tracer of large-scale structure (LSS), the CO gas content as a function of redshift can be quantified by its three-dimensional fluctuation power spectra. Furthermore, cross-correlating CO emission with other LSS tracers offers a way to measure the emission as a function of scale and redshift. Here we introduce the model relevant for such a cross-correlation measurement between CO and other LSS tracers, and between different CO rotational lines. We propose a novel use of cosmic microwave background (CMB) data and attempt to extract redshifted CO emissions embedded in the Wilkinson Microwave Anisotropy Probe (WMAP) data set. We cross-correlate the all-sky WMAP7 data with LSS data sets, namely, the photometric quasar sample and the luminous red galaxy sample from the Sloan Digital Sky Survey Data Releases 6 and 7, respectively. We are unable to detect a cross-correlation signal with either CO(1-0) or CO(2-1) lines, mainly due to the instrumental noise in the WMAP data. However, we are able to rule out models more than three times greater than our more optimistic model. We discuss the cross-correlation signal from the thermal Sunyaev-Zeldovich effect and dust as potential contaminants, and quantify their impact for our CO measurements. We discuss forecasts for current CMB experiments and a hypothetical future CO-focused experiment, and propose to cross-correlate CO temperature data with the Hobby-Eberly Telescope Dark Energy Experiment Ly alpha -emitter sample, for which a signal-to-noise ratio of 58 is possible. JF - Astrophysical Journal AU - Pullen, Anthony R AU - Chang, Tzu-Ching AU - Dore, Olivier AU - Lidz, Adam AD - NASA Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, MS 169-237, Pasadena, CA 91109, USA, anthony.r.pullen@jpl.nasa.gov PY - 2013 SP - 1 EP - 15 PB - IOP Publishing, The Public Ledger Building, Suite 929 Philadelphia PA 19106 United States VL - 768 IS - 1 SN - 0004-637X, 0004-637X KW - Pollution Abstracts; Meteorological & Geoastrophysical Abstracts KW - cosmology: observations KW - diffuse radiation KW - intergalactic medium KW - large-scale structure of universe KW - Historical account KW - Anisotropy KW - Acoustic waves KW - Power spectra KW - Temperature KW - Galaxies KW - Dust KW - Carbon monoxide KW - Tracers KW - Currents KW - Telescopes KW - Cosmology KW - Energy KW - Photometric observations KW - Emissions KW - Cosmic microwave background KW - Noise pollution KW - Quasars KW - Temperature data KW - P 0000:AIR POLLUTION KW - M2 524:Stars, Universe (524) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1722170157?accountid=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=CROSS-CORRELATIONS+AS+A+COSMOLOGICAL+CARBON+MONOXIDE+DETECTOR&rft.au=Pullen%2C+Anthony+R%3BChang%2C+Tzu-Ching%3BDore%2C+Olivier%3BLidz%2C+Adam&rft.aulast=Pullen&rft.aufirst=Anthony&rft.date=2013-05-01&rft.volume=768&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%2F768%2F1%2F15 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-10-01 N1 - Last updated - 2015-12-23 N1 - SubjectsTermNotLitGenreText - Telescopes; Anisotropy; Cosmology; Photometric observations; Acoustic waves; Power spectra; Galaxies; Cosmic microwave background; Noise pollution; Quasars; Temperature data; Carbon monoxide; Historical account; Tracers; Currents; Energy; Temperature; Emissions; Dust DO - http://dx.doi.org/10.1088/0004-637X/768/1/15 ER - TY - JOUR T1 - Evidence for a short period of hydrologic activity in Newton Crater, Mars, near the Hesperian-Amazonian transition AN - 1656035505; 2013-088395 AB - Hesperian/Amazonian-aged valleys and alluvial fans distributed in regional clusters throughout the southern middle- to low-latitudes were formed during a period of fluvial runoff and erosion which acted over a smaller spatial and temporal scale than the older, "classical" Martian valley networks dated to the Noachian-Hesperian boundary. In order to explore the potential sources of water which formed these younger valleys, we calculated the expected sediment transport and water discharge rates for a valley and alluvial fan located in Newton crater (40 degrees S, -159 degrees E) over a wide range of water-filled channel depths and sediment grain sizes in order to constrain the formation timescale and required water volume. Depending on the depth of the water-filled channel within the valley, the alluvial fan was likely emplaced over approximately 0.1 to approximately 10 years of fluvial activity involving between 1.8 and 5.7 km (super 3) of water. These results imply water runoff rates of between 1 and 10 cm/d over a typical 300 km (super 2) drainage area. Possible processes for delivering water to these drainages include high obliquity snowpack melting via volcanism or impacts resulting in either scattered, local to regional melting events or a brief global warming event. An extended, perhaps episodic, period of fluvial activity lasting hundreds of years driven by insolation-induced melting of high obliquity snowpacks is another possibility. Abstract Copyright (2013). American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Parsons, Reid A AU - Moore, J M AU - Howard, A D Y1 - 2013/05// PY - 2013 DA - May 2013 SP - 1082 EP - 1093 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 5 SN - 2169-9097, 2169-9097 KW - obliquity of the ecliptic KW - impact features KW - erosion KW - suspended materials KW - Mars KW - Hesperian KW - paleoclimatology KW - spatial distribution KW - snowpack KW - Amazonian KW - transport KW - quantitative analysis KW - volcanism KW - sedimentation rates KW - sediments KW - drainage basins KW - greenhouse effect KW - discharge KW - bedload KW - valleys KW - sediment transport KW - paleohydrology KW - grain size KW - channels KW - water erosion KW - terrestrial planets KW - planets KW - alluvial fans KW - runoff KW - Newton Crater KW - volume KW - fluvial features KW - impact craters KW - temporal distribution KW - latitude KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656035505?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+a+short+period+of+hydrologic+activity+in+Newton+Crater%2C+Mars%2C+near+the+Hesperian-Amazonian+transition&rft.au=Parsons%2C+Reid+A%3BMoore%2C+J+M%3BHoward%2C+A+D&rft.aulast=Parsons&rft.aufirst=Reid&rft.date=2013-05-01&rft.volume=118&rft.issue=5&rft.spage=1082&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2Fjgre.20088 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 - 2013-01-01 N1 - Number of references - 62 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables, sketch maps N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - alluvial fans; Amazonian; bedload; channels; discharge; drainage basins; erosion; fluvial features; grain size; greenhouse effect; Hesperian; impact craters; impact features; latitude; Mars; Newton Crater; obliquity of the ecliptic; paleoclimatology; paleohydrology; planets; quantitative analysis; runoff; sediment transport; sedimentation rates; sediments; snowpack; spatial distribution; suspended materials; temporal distribution; terrestrial planets; transport; valleys; volcanism; volume; water erosion DO - http://dx.doi.org/10.1002/jgre.20088 ER - TY - JOUR T1 - The lunar photoelectron sheath; a change in trapping efficiency during a solar storm AN - 1656035339; 2013-088397 AB - On the lunar dayside, photoelectrons are quasi-constantly emitted from the Moon's surface and this electron flux acts to typically charge the dayside lunar surface a few volts positive. In arriving at an equilibrium surface potential, the surface will charge to balance the two primary currents: the outgoing photoelectron flux, J (sub p) , against the incoming solar wind electron thermal flux, J (sub e) . In nominal solar wind conditions, J (sub p) >J (sub e) and the surface charges positive, trapping most of the photoelectrons. However, during the passage of a coronal mass ejection (CME), the incoming electron thermal flux, J (sub e) , will quickly change from being less than J (sub p) to being greater than J (sub p) on time scales of approximately 1-2% of a lunation. Using a set of independently developed particle-in-cell plasma codes, we find at times when J (sub p) /J (sub e) <1, there is substantially less near-surface electrostatic trapping of the photoelectrons due to the reduction of the restraining surface potential. The photoelectron population then has almost direct access to upstream regions. We find that the morphology of the sheath is very different in the CME's dense cool plasma than in the nominal solar wind, with a larger relative portion of the photoelectrons now liberated to propagate upstream into plasma regions ahead of the Moon. Abstract Copyright (2013). American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Farrell, William M AU - Poppe, A R AU - Zimmerman, M I AU - Halekas, J S AU - Delory, G T AU - Killen, R M Y1 - 2013/05// PY - 2013 DA - May 2013 SP - 1114 EP - 1122 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 5 SN - 2169-9097, 2169-9097 KW - plasma KW - Moon KW - solar wind KW - electrostatic properties KW - simulation KW - models KW - photoelectron sheath KW - Sun KW - solar radiation KW - electrical currents KW - solar activity KW - photoelectrons KW - electrons KW - coronal mass ejection KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656035339?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+lunar+photoelectron+sheath%3B+a+change+in+trapping+efficiency+during+a+solar+storm&rft.au=Farrell%2C+William+M%3BPoppe%2C+A+R%3BZimmerman%2C+M+I%3BHalekas%2C+J+S%3BDelory%2C+G+T%3BKillen%2C+R+M&rft.aulast=Farrell&rft.aufirst=William&rft.date=2013-05-01&rft.volume=118&rft.issue=5&rft.spage=1114&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2Fjgre.20086 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 - 2013-01-01 N1 - Number of references - 21 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - coronal mass ejection; electrical currents; electrons; electrostatic properties; models; Moon; photoelectron sheath; photoelectrons; plasma; simulation; solar activity; solar radiation; solar wind; Sun DO - http://dx.doi.org/10.1002/jgre.20086 ER - TY - JOUR T1 - The impact of a realistic vertical dust distribution on the simulation of the Martian general circulation AN - 1656033969; 2013-088389 AB - Limb-scanning observations with the Mars Climate Sounder and Thermal Emission Spectrometer (TES) have identified discrete layers of enhanced dust opacity well above the boundary layer and a mean vertical structure of dust opacity very different from the expectation of well-mixed dust in the lowest 1-2 scale heights. To assess the impact of this vertical dust opacity profile on atmospheric properties, we developed a TES limb-scan observation-based three-dimensional and time-evolving dust climatology for use in forcing general circulation models (GCMs). We use this to force the MarsWRF GCM and compare with simulations that use a well-mixed (Conrath-nu ) vertical dust profile and Mars Climate Database version 4 (MCD) horizontal distribution dust opacity forcing function. We find that simulated temperatures using the TES-derived forcing yield a 1.18 standard deviation closer match to TES temperature retrievals than a MarsWRF simulation using MCD forcing. The climatological forcing yields significant changes to many large-scale features of the simulated atmosphere. Notably the high-latitude westerly jet speeds are 10-20 m/s higher, polar warming collar temperatures are 20-30 K warmer near northern winter solstice and tilted more strongly poleward, the middle and lower atmospheric meridional circulations are partially decoupled, the migrating diurnal tide exhibits destructive interference and is weakened by 50% outside of equinox, and the southern hemisphere wave number 1 stationary wave is strengthened by up to 4 K (45%). We find the vertical dust distribution is an important factor for Martian lower and middle atmospheric thermal structure and circulation that cannot be neglected in analysis and simulation of the Martian atmosphere. Abstract Copyright (2013). American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Guzewich, Scott D AU - Toigo, Anthony D AU - Richardson, Mark I AU - Newman, Claire E AU - Talaat, Elsayed R AU - Waugh, Darryn W AU - McConnochie, Timothy H Y1 - 2013/05// PY - 2013 DA - May 2013 SP - 980 EP - 993 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 5 SN - 2169-9097, 2169-9097 KW - Rossby waves KW - general circulation models KW - polar regions KW - clastic sediments KW - statistical analysis KW - standard deviation KW - Mars Climate Sounder KW - atmosphere KW - Mars KW - simulation KW - temperature KW - terrestrial planets KW - planets KW - atmospheric circulation KW - optical properties KW - dust KW - sediments KW - opacity KW - diurnal variations KW - climate forcing KW - winds KW - boundary layer KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656033969?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+impact+of+a+realistic+vertical+dust+distribution+on+the+simulation+of+the+Martian+general+circulation&rft.au=Guzewich%2C+Scott+D%3BToigo%2C+Anthony+D%3BRichardson%2C+Mark+I%3BNewman%2C+Claire+E%3BTalaat%2C+Elsayed+R%3BWaugh%2C+Darryn+W%3BMcConnochie%2C+Timothy+H&rft.aulast=Guzewich&rft.aufirst=Scott&rft.date=2013-05-01&rft.volume=118&rft.issue=5&rft.spage=980&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2Fjgre.20084 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 - 2013-01-01 N1 - Number of references - 76 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - atmosphere; atmospheric circulation; boundary layer; clastic sediments; climate forcing; diurnal variations; dust; general circulation models; Mars; Mars Climate Sounder; opacity; optical properties; planets; polar regions; Rossby waves; sediments; simulation; standard deviation; statistical analysis; temperature; terrestrial planets; winds DO - http://dx.doi.org/10.1002/jgre.20084 ER - TY - JOUR T1 - Outburst dust production of Comet 29P/Schwassmann-Wachmann 1 AN - 1612268438; 2014-082159 AB - Multi-aperture photometry of Comet 29P/Schwassmann-Wachmann 1 was conducted on Johnson-Cousins R-band observations spanning 2011 May 1-9 and 2012 June 6-July 3. The comet was observed in outburst on 2011 May 3 and 2012 July 1, during which its brightness increased by 2.2 and 2.1 mag, respectively, as measured through a 10 arcsec aperture. Dust production before and after each outburst is calculated using the parameter Af rho , which is converted to a lower limit on the dust production rate based on dust models and derived nuclear properties from other studies. Both outbursts are accompanied by large increases in dust production, Af rho by a factor of approximately 6.5-7 and dust production rate by a factor of approximately 18-23. In addition, variations in the dust brightness profile of the coma are examined during the events. The profile is observed to steepen significantly at the beginning of each outburst and then slowly return to pre-outburst values, mirroring the behavior of Af rho . The start of an outbound "ripple" of dust in the profile might be observed as the comet returns to its pre-outburst state, although this cannot be confirmed. Using a simple model of the 2011 May 3 outburst, an estimated lower limit of (2.6 + or - 0.7) X 10 (super 8) kg of dust was released during the event. If this is representative of a typical outburst of 29P, then it is estimated that outbursts account for a lower limit of 80 (super +20) (sub -30) % of the total material ejected by the comet per year. Copyright (Copyright) 2013. The American Astronomical Society. All rights reserved. JF - The Astronomical Journal (New York) AU - Hosek, Matthew W AU - Blaauw, Rhiannon C AU - Cooke, William J AU - Suggs, Robert M Y1 - 2013/05/01/ PY - 2013 DA - 2013 May 01 EP - Paper no. 122 PB - IOP Publishing for American Institute of Physics, Bristol VL - 145 IS - 5 SN - 0004-6256, 0004-6256 KW - models KW - brightness KW - photometry KW - cosmic dust KW - comets KW - outburst KW - Schwassmann-Wachmann 1 Comet KW - rates KW - interplanetary dust KW - cometary dust KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1612268438?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+Astronomical+Journal+%28New+York%29&rft.atitle=Outburst+dust+production+of+Comet+29P%2FSchwassmann-Wachmann+1&rft.au=Hosek%2C+Matthew+W%3BBlaauw%2C+Rhiannon+C%3BCooke%2C+William+J%3BSuggs%2C+Robert+M&rft.aulast=Hosek&rft.aufirst=Matthew&rft.date=2013-05-01&rft.volume=145&rft.issue=5&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%2F145%2F5%2F122 L2 - http://www.iop.org/EJ/journal/aj LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data supplied by IOP Publishing Ltd., London, United Kingdom N1 - Date revised - 2014-01-01 N1 - SuppNotes - Based on Publisher-supplied data N1 - Last updated - 2014-10-16 N1 - SubjectsTermNotLitGenreText - brightness; cometary dust; comets; cosmic dust; interplanetary dust; models; outburst; photometry; rates; Schwassmann-Wachmann 1 Comet DO - http://dx.doi.org/10.1088/0004-6256/145/5/122 ER - TY - JOUR T1 - Mapping large-scale river flow hydraulics in the Amazon Basin AN - 1566840905; 20688788 AB - Key Points * first attempt to map river flow dynamics in the Amazon basin * new empirical equation for time of peak of flood waves designed for large rivers * the map has a percentage of detection of 83.4% Research on actual requirements for a numerically consistent representation of flow dynamics in large-scale river-flood models are needed to improve both modeling performance and computational efficiency. Still, regional- and global-scale characterizations of river hydrodynamics are absent. A first attempt to map river hydrodynamics in the Amazon Basin is presented. Flood wave type maps at 0.25 degree spatial resolution are derived from a classification method based on the analysis of Saint-Venant equation terms. Global river geometry data sets derived from both digital elevation models and empirical equations supported by stream gauge observations are used as input variables. Errors of input variables are estimated, and a sensitivity analysis is performed. Results show that 64.5% of rivers (headwaters and high-slope rivers) can be represented by the kinematic wave (KI), 34.5% (main Amazon tributaries, low slope, and wetland regions) by the diffusive wave (DF), and 1% (lower Amazon) by the full Saint-Venant equations (SV). In a rigorous scenario, i.e., a case where the most restricted classification of each grid cell is considered, 33% is classified as KI, 62% as DF, and 5% as SV. Most of the basin presents subcritical flow with very low Froude number (Fr), while the Andean region is dominated by larger Fr values and supercritical flow can be found. According to our evaluation mostly based on in situ data, the map has a percentage of detection of 83.4%. JF - Water Resources Research AU - Getirana, Augusto CV AU - Paiva, Rodrigo CD AD - Hydrological Sciences Lab, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2013/05// PY - 2013 DA - May 2013 SP - 2437 EP - 2445 PB - American Geophysical Union, 2000 Florida Ave., N.W. Washington DC 20009 United States VL - 49 IS - 5 SN - 0043-1397, 0043-1397 KW - Meteorological & Geoastrophysical Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Aqualine Abstracts KW - flood wave KW - Saint-Venant equations KW - Amazon Basin KW - Froude number KW - time to peak KW - River Basins KW - Hydrodynamics KW - Flood waves KW - Water resources KW - Freshwater KW - Tranquil Flow KW - Streams KW - Classification KW - Flood Waves KW - River Flow KW - Wetlands KW - Tributaries KW - Rivers KW - River flow KW - Mathematical models KW - River flow dynamics KW - River discharge KW - Model Studies KW - Sensitivity analysis KW - South America, Amazon R. KW - Stream KW - Water resources research KW - Q5 08503:Characteristics, behavior and fate KW - SW 5080:Evaluation, processing and publication KW - M2 556.16:Runoff (556.16) KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1566840905?accountid=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=Mapping+large-scale+river+flow+hydraulics+in+the+Amazon+Basin&rft.au=Getirana%2C+Augusto+CV%3BPaiva%2C+Rodrigo+CD&rft.aulast=Getirana&rft.aufirst=Augusto&rft.date=2013-05-01&rft.volume=49&rft.issue=5&rft.spage=2437&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1002%2Fwrcr.20212 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-09-01 N1 - Last updated - 2014-12-11 N1 - SubjectsTermNotLitGenreText - Rivers; Mathematical models; Classification; Stream; River discharge; Water resources; Wetlands; Froude number; Tributaries; River flow; River flow dynamics; Sensitivity analysis; Hydrodynamics; Flood waves; Water resources research; River Basins; Flood Waves; River Flow; Tranquil Flow; Streams; Model Studies; South America, Amazon R.; Freshwater DO - http://dx.doi.org/10.1002/wrcr.20212 ER - TY - JOUR T1 - Influence of persistent wind scour on the surface mass balance of Antarctica AN - 1507174875; 2014-016691 JF - Nature Geoscience AU - Das, Indrani AU - Bell, Robin E AU - Scambos, Ted A AU - Wolovick, Michael AU - Creyts, Timothy T AU - Studinger, Michael AU - Frearson, Nicholas AU - Nicolas, Julien P AU - Lenaerts, Jan T M AU - van den Broeke, Michiel R Y1 - 2013/05// PY - 2013 DA - May 2013 SP - 367 EP - 371 PB - Nature Publishing Group, London VL - 6 IS - 5 SN - 1752-0894, 1752-0894 KW - scour KW - laser methods KW - erosion KW - landform evolution KW - roughness KW - Dome A KW - wind erosion KW - radar methods KW - East Antarctica KW - topography KW - Antarctica KW - lidar methods KW - mass balance KW - snow KW - surface features KW - airborne methods KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1507174875?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Influence+of+persistent+wind+scour+on+the+surface+mass+balance+of+Antarctica&rft.au=Das%2C+Indrani%3BBell%2C+Robin+E%3BScambos%2C+Ted+A%3BWolovick%2C+Michael%3BCreyts%2C+Timothy+T%3BStudinger%2C+Michael%3BFrearson%2C+Nicholas%3BNicolas%2C+Julien+P%3BLenaerts%2C+Jan+T+M%3Bvan+den+Broeke%2C+Michiel+R&rft.aulast=Das&rft.aufirst=Indrani&rft.date=2013-05-01&rft.volume=6&rft.issue=5&rft.spage=367&rft.isbn=&rft.btitle=&rft.title=Nature+Geoscience&rft.issn=17520894&rft_id=info:doi/10.1038%2Fngeo1766 L2 - http://www.nature.com/ngeo/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 29 N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - airborne methods; Antarctica; Dome A; East Antarctica; erosion; landform evolution; laser methods; lidar methods; mass balance; radar methods; roughness; scour; snow; surface features; topography; wind erosion DO - http://dx.doi.org/10.1038/ngeo1766 ER - TY - JOUR T1 - Recent climate and ice-sheet changes in West Antarctica compared with the past 2,000 years AN - 1507174856; 2014-016692 JF - Nature Geoscience AU - Steig, Eric J AU - Ding, Qinghua AU - White, James W C AU - Kuettel, Marcel AU - Rupper, Summer B AU - Neumann, Thomas A AU - Neff, Peter D AU - Gallant, Ailie J E AU - Mayewski, Paul A AU - Taylor, Kendrick C AU - Hoffmann, Georg AU - Dixon, Daniel A AU - Schoenemann, Spruce W AU - Markle, Bradley R AU - Fudge, Tyler J AU - Schneider, David P AU - Schauer, Andrew J AU - Teel, Rebecca P AU - Vaughn, Bruce H AU - Burgener, Landon AU - Williams, Jessica AU - Korotkikh, Elena Y1 - 2013/05// PY - 2013 DA - May 2013 SP - 372 EP - 375 PB - Nature Publishing Group, London VL - 6 IS - 5 SN - 1752-0894, 1752-0894 KW - general circulation models KW - Southern Ocean KW - Quaternary KW - oxygen KW - isotopes KW - isotope ratios KW - Bellingshausen Sea KW - anomalies KW - O-18/O-16 KW - paleoclimatology KW - Holocene KW - stable isotopes KW - ice sheets KW - Cenozoic KW - Antarctic ice sheet KW - sea-level changes KW - Antarctica KW - West Antarctic ice sheet KW - glacial geology KW - Amundsen Sea KW - upper Holocene KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1507174856?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Recent+climate+and+ice-sheet+changes+in+West+Antarctica+compared+with+the+past+2%2C000+years&rft.au=Steig%2C+Eric+J%3BDing%2C+Qinghua%3BWhite%2C+James+W+C%3BKuettel%2C+Marcel%3BRupper%2C+Summer+B%3BNeumann%2C+Thomas+A%3BNeff%2C+Peter+D%3BGallant%2C+Ailie+J+E%3BMayewski%2C+Paul+A%3BTaylor%2C+Kendrick+C%3BHoffmann%2C+Georg%3BDixon%2C+Daniel+A%3BSchoenemann%2C+Spruce+W%3BMarkle%2C+Bradley+R%3BFudge%2C+Tyler+J%3BSchneider%2C+David+P%3BSchauer%2C+Andrew+J%3BTeel%2C+Rebecca+P%3BVaughn%2C+Bruce+H%3BBurgener%2C+Landon%3BWilliams%2C+Jessica%3BKorotkikh%2C+Elena&rft.aulast=Steig&rft.aufirst=Eric&rft.date=2013-05-01&rft.volume=6&rft.issue=5&rft.spage=372&rft.isbn=&rft.btitle=&rft.title=Nature+Geoscience&rft.issn=17520894&rft_id=info:doi/10.1038%2Fngeo1778 L2 - http://www.nature.com/ngeo/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 30 N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - Amundsen Sea; anomalies; Antarctic ice sheet; Antarctica; Bellingshausen Sea; Cenozoic; general circulation models; glacial geology; Holocene; ice sheets; isotope ratios; isotopes; O-18/O-16; oxygen; paleoclimatology; Quaternary; sea-level changes; Southern Ocean; stable isotopes; upper Holocene; West Antarctic ice sheet DO - http://dx.doi.org/10.1038/ngeo1778 ER - TY - JOUR T1 - Sea ice thickness estimations from ICESat altimetry over the Bellingshausen and Amundsen Seas, 2003-2009 AN - 1502293199; 2014-014362 AB - Sea ice thicknesses derived from NASA's Ice, Cloud, and Land Elevation Satellite (ICESat) altimetry data are examined using two different approaches, buoyancy and empirical equations, and at two spatial scales-ICESat footprint size (70 m diameter spot) and Advanced Microwave Scanning Radiometer (AMSR-E) pixel size (12.5 km by 12.5 km) for the Bellingshausen and Amundsen Seas of west Antarctica. Ice thickness from the empirical equation shows reasonable spatial and temporal distribution of ice thickness from 2003 to 2009. Ice thickness from the buoyancy equation, however, additionally needing snow depth information derived from the AMSR-E, shows an overestimation in terms of maximum, mean (+63% to 75%), and standard deviation while underestimation in modal thickness (-20%) as compared with those from the empirical equation approach. When ICESat snow freeboard is used as the snow depth in the buoyancy equation, i.e., the zero ice freeboard assumption, the derived ice thicknesses match well with those from the empirical equation approach, within 5% overall. The AMSR-E, therefore, may underestimate snow depth and accounts for approximately 95% of the ice thickness overestimation as compared with the buoyancy approach. The empirical equation derived ice thickness shows a consistent asymmetrical distribution with a long tail to high values, and seasonal median values ranging from 0.8 to 1.4 m over the 2003-2009 period that are always larger than the corresponding modal values (0.6-1.1 m) and lower than the mean values (1.0-1.6 m), with standard deviation of 0.6-1.0 m. An overall increasing trend of 0.03 m/year of mean ice thickness is found from 2003 to 2009, although statistically insignificant (p = 0.11) at the 95% confidence level. Starting from autumn, a general picture of seasonal mean, modal, and median ice thickness increases progressively from autumn to spring and decreases from spring to the following autumn, when new thin ice dominates the ice thickness distribution. The asymmetric shape of the thickness distribution reflects the key role of ice deformation processes in the evolution of the thickness distribution. The statistical properties of the thickness distribution interannually (high range of mean thickness and standard deviation) indicate the variability of deformation processes. However, spring ice volume, the product of ice mean thickness and areal extent computed for the spring maximum, shows variability year to year but is primarily dominated by ice extent variability, with no increasing or decreasing trend over this record length. The dependence of the volume on the ice extent primarily suggests that ice thickness changes have also not covaried with the ice extent losses seen over the satellite record in this region, unlike the Arctic. These properties reflect the interactive processes of ice advection, thermodynamic growth and ice deformation that all substantially influence ice mass balance in the Bellingshausen-Amundsen Seas region. Abstract Copyright (2013), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Oceans AU - Xie, Hongjie AU - Tekeli, Ahmet Emre AU - Ackley, Stephen F AU - Yi, Donghui AU - Zwally, H Jay Y1 - 2013/05// PY - 2013 DA - May 2013 SP - 2438 EP - 2453 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 5 SN - 2169-9275, 2169-9275 KW - Southern Ocean KW - ice cover thickness KW - ICESat KW - sea ice KW - ice cover KW - Bellingshausen Sea KW - mathematical models KW - altimetry KW - satellite methods KW - temperature KW - Antarctica KW - ice KW - Amundsen Sea KW - remote sensing KW - 07:Oceanography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1502293199?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Sea+ice+thickness+estimations+from+ICESat+altimetry+over+the+Bellingshausen+and+Amundsen+Seas%2C+2003-2009&rft.au=Xie%2C+Hongjie%3BTekeli%2C+Ahmet+Emre%3BAckley%2C+Stephen+F%3BYi%2C+Donghui%3BZwally%2C+H+Jay&rft.aulast=Xie&rft.aufirst=Hongjie&rft.date=2013-05-01&rft.volume=118&rft.issue=5&rft.spage=2438&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Oceans&rft.issn=21699275&rft_id=info:doi/10.1002%2Fjgrc.20179 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 - 2014-01-01 N1 - Number of references - 40 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - altimetry; Amundsen Sea; Antarctica; Bellingshausen Sea; ice; ice cover; ice cover thickness; ICESat; mathematical models; remote sensing; satellite methods; sea ice; Southern Ocean; temperature DO - http://dx.doi.org/10.1002/jgrc.20179 ER - TY - JOUR T1 - Se-Bearing Colloidal Particles Produced by Sulfate-Reducing Bacteria and Sulfide-Oxidizing Bacteria: TEM Study AN - 1448211910; 18646573 AB - As determined by transmission electron microscopy (TEM), the reduction of selenate and selenite by Desulfovibrio desulfuricans, a sulfate-reducing bacterium, produces spherical (Se, S) sub-micro particles outside the cell. The particles are crystalline or amorphous, depending on medium composition. Amorphous-like Se-rich spherical particles may also occur inside the bacterial cells. The bacteria are more active in the reduction of selenite than selenate. The Desulfovibrio desulfuricans bacterium is able to extract S in the (S, Se) solid solution particles and transform S-rich particles into Se-rich and Se crystals. Photoautotrophs, such as Chromatium spp., are able to oxidize sulfide (S super(2-)). When the bacteria grow in sulfide- and selenide-bearing environments, they produce amorphous-like (S, Se) globules inside the cells. TEM results show that compositional zonation in the (S, Se) globules occur in Chromatium spp. collected from a top sediment layer of a Se-contaminated pond. S super(2-) may be from the products of sulfate-reducing bacteria. Both the sulfate-reducing bacteria and photosynthetic Chromatium metabolize S preferentially over Se. It is proposed that the S-rich zones are formed during photosynthesis (day) period, and the Se-rich zones are formed during respiration active (night) period. The results indicate that both Desulfovibrio desulfuricans and Chromatium spp. are able to immobilize the oxidized selenium (selenate and/or selenite) in the forms of elemental selenium and (Se, S) solid solutions. The bacteria reduce S in the (Se, S) particles and further enrich Se in the crystalline particles. The reduced S combines with Fe super(2+) to form amorphous FeS. JF - Advances in Microbiology AU - Xu, Huifang AU - Barton, Larry L AD - NASA Astrobiology Institute, Department of Geoscience, University of Wisconsin-Madison, Madison, USA Y1 - 2013/05// PY - 2013 DA - May 2013 SP - 205 EP - 211 PB - Scientific Research Publishing VL - 3 IS - 2 SN - 2165-3402, 2165-3402 KW - Microbiology Abstracts B: Bacteriology KW - Sulfate-reducing bacteria KW - Photosynthesis KW - Transmission electron microscopy KW - Respiration KW - Desulfovibrio desulfuricans KW - selenite KW - Crystals KW - Zonation KW - Ponds KW - Sediments KW - Selenium KW - Sulfide KW - Chromatium KW - Iron KW - J 02320:Cell Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1448211910?accountid=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=Advances+in+Microbiology&rft.atitle=Se-Bearing+Colloidal+Particles+Produced+by+Sulfate-Reducing+Bacteria+and+Sulfide-Oxidizing+Bacteria%3A+TEM+Study&rft.au=Xu%2C+Huifang%3BBarton%2C+Larry+L&rft.aulast=Xu&rft.aufirst=Huifang&rft.date=2013-05-01&rft.volume=3&rft.issue=2&rft.spage=205&rft.isbn=&rft.btitle=&rft.title=Advances+in+Microbiology&rft.issn=21653402&rft_id=info:doi/10.4236%2Faim.2013.32031 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-10-01 N1 - Last updated - 2013-12-16 N1 - SubjectsTermNotLitGenreText - Sulfide; Selenium; Sulfate-reducing bacteria; Photosynthesis; Respiration; Transmission electron microscopy; selenite; Zonation; Crystals; Iron; Sediments; Ponds; Desulfovibrio desulfuricans; Chromatium DO - http://dx.doi.org/10.4236/aim.2013.32031 ER - TY - JOUR T1 - Low-temperature thermal reactions between SO (sub 2) and H (sub 2) O (sub 2) and their relevance to the jovian icy satellites AN - 1438968820; 2013-077582 JF - Icarus AU - Loeffler, Mark J AU - Hudson, Reggie L Y1 - 2013/05// PY - 2013 DA - May 2013 SP - 257 EP - 259 PB - Elsevier, New York, NY VL - 224 IS - 1 SN - 0019-1035, 0019-1035 KW - sulfur dioxide KW - icy satellites KW - experimental studies KW - sulfate ion KW - Europa Satellite KW - Ganymede Satellite KW - Galilean satellites KW - temperature KW - infrared spectra KW - activation energy KW - Callisto Satellite KW - chemical reactions KW - ice KW - low temperature KW - hydrogen peroxide KW - heating KW - spectra KW - satellites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1438968820?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Low-temperature+thermal+reactions+between+SO+%28sub+2%29+and+H+%28sub+2%29+O+%28sub+2%29+and+their+relevance+to+the+jovian+icy+satellites&rft.au=Loeffler%2C+Mark+J%3BHudson%2C+Reggie+L&rft.aulast=Loeffler&rft.aufirst=Mark&rft.date=2013-05-01&rft.volume=224&rft.issue=1&rft.spage=257&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.02.005 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 29 N1 - PubXState - NY N1 - Document feature - illus. N1 - Last updated - 2013-10-03 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - activation energy; Callisto Satellite; chemical reactions; Europa Satellite; experimental studies; Galilean satellites; Ganymede Satellite; heating; hydrogen peroxide; ice; icy satellites; infrared spectra; low temperature; satellites; spectra; sulfate ion; sulfur dioxide; temperature DO - http://dx.doi.org/10.1016/j.icarus.2013.02.005 ER - TY - JOUR T1 - Investigation of data fusion applied to health monitoring of wind turbine drivetrain components AN - 1434026961; 18502110 AB - The research described was performed with diagnostic tools used to detect damage to dynamic mechanical components in a wind turbine gearbox. Different monitoring technologies were evaluated by collecting vibration and oil-debris data from tests performed on both a 'healthy' gearbox and a damaged gearbox that were mounted on a dynamometer test stand at the National Renewable Energy Laboratory (NREL). The damaged gearbox tested had been removed from the field after it experienced component damage because of two events that resulted in the loss of oil. The gearbox was re-tested under controlled conditions by using the NREL dynamometer test stand. Preliminary results indicate that oil-debris and vibration data can be integrated to improve the assessment of the health of the wind turbine gearbox. Copyright [copy 2012 John Wiley & Sons, Ltd. JF - Wind Energy AU - Dempsey, Paula J AU - Sheng, Shuangwen AD - NASA Glenn Research Center, Cleveland, Ohio, 44135. Y1 - 2013/05// PY - 2013 DA - May 2013 SP - 479 EP - 489 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 16 IS - 4 SN - 1095-4244, 1095-4244 KW - Health & Safety Science Abstracts; Sustainability Science Abstracts KW - Oil KW - Wind energy KW - Vibration KW - Renewable energy KW - Energy KW - Technology KW - M3 1010:Issues in Sustainable Development KW - H 0500:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1434026961?accountid=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=Wind+Energy&rft.atitle=Investigation+of+data+fusion+applied+to+health+monitoring+of+wind+turbine+drivetrain+components&rft.au=Dempsey%2C+Paula+J%3BSheng%2C+Shuangwen&rft.aulast=Dempsey&rft.aufirst=Paula&rft.date=2013-05-01&rft.volume=16&rft.issue=4&rft.spage=479&rft.isbn=&rft.btitle=&rft.title=Wind+Energy&rft.issn=10954244&rft_id=info:doi/10.1002%2Fwe.1512 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-09-01 N1 - Last updated - 2013-11-15 N1 - SubjectsTermNotLitGenreText - Oil; Wind energy; Energy; Renewable energy; Vibration; Technology DO - http://dx.doi.org/10.1002/we.1512 ER - TY - JOUR T1 - The chlorine abundance of Earth; implications for a habitable planet AN - 1429840381; 2013-070450 AB - The Cl, Br and I contents of Earth are depleted by a factor of 10 relative to predicted values from chondritic and solar abundances. Possible explanations for the apparent discrepancy include (1) unrecognized sequestration of Cl in the core, (2) a much higher nebular volatility than normally presumed or (3) a preferential loss of the heavy halogens during planetary accretion. We tested the first assumption by conducting high pressure-temperature equilibration experiments between silicate and metal. At 15 GPa and 1900 degrees C, the D (sub Cl(metal-silicate)) value for Cl is less than 0.007, indicating that the core is not a significant reservoir for Cl. The concentration of Cl in all chondritic classes follows a depletion trend very similar to that of Na and Mn, arguing against a low condensation temperature for Cl. Instead, we propose that the depletion of the heavy halogens is due to their unique hydrophilic behavior. Almost half of Earth's Cl and Br inventory resides in the ocean and evaporites, demonstrating the unique affinity for aqueous solutions for these elements. During planetary accretion, there would have been a strong sequestration of halogens into the crustal reservoir. 'Collisional erosion' during planetary accretion provides a mechanism that would uniquely strip the heavy halogens out of an accreting Earth. Had such loss not occurred, the salinity of the oceans would be 10X the present value, and complex life would probably never have evolved. Abstract Copyright (2013) Elsevier, B.V. JF - Earth and Planetary Science Letters AU - Sharp, Z D AU - Draper, D S Y1 - 2013/05// PY - 2013 DA - May 2013 SP - 71 EP - 77 PB - Elsevier, Amsterdam VL - 369-370 SN - 0012-821X, 0012-821X KW - sea water KW - stony meteorites KW - halogens KW - mantle KW - aqueous solutions KW - salinity KW - manganese KW - lithophile elements KW - life origin KW - temperature KW - volatilization KW - meteorites KW - iodine KW - sedimentary rocks KW - volatile elements KW - hydrodynamics KW - chondrites KW - depletion KW - chlorine KW - experimental studies KW - chemically precipitated rocks KW - Earth KW - accretion KW - pressure KW - condensation KW - alkali metals KW - sodium KW - bromine KW - high pressure KW - evaporites KW - equilibrium KW - solar nebula KW - metals KW - chondrules KW - core KW - high temperature KW - crust KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1429840381?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=The+chlorine+abundance+of+Earth%3B+implications+for+a+habitable+planet&rft.au=Sharp%2C+Z+D%3BDraper%2C+D+S&rft.aulast=Sharp&rft.aufirst=Z&rft.date=2013-05-01&rft.volume=369-370&rft.issue=&rft.spage=71&rft.isbn=&rft.btitle=&rft.title=Earth+and+Planetary+Science+Letters&rft.issn=0012821X&rft_id=info:doi/10.1016%2Fj.epsl.2013.03.005 L2 - http://www.sciencedirect.com/science/journal/0012821X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2013-01-01 N1 - Number of references - 65 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2013-09-05 N1 - CODEN - EPSLA2 N1 - SubjectsTermNotLitGenreText - accretion; alkali metals; aqueous solutions; bromine; chemically precipitated rocks; chlorine; chondrites; chondrules; condensation; core; crust; depletion; Earth; equilibrium; evaporites; experimental studies; halogens; high pressure; high temperature; hydrodynamics; iodine; life origin; lithophile elements; manganese; mantle; metals; meteorites; pressure; salinity; sea water; sedimentary rocks; sodium; solar nebula; stony meteorites; temperature; volatile elements; volatilization DO - http://dx.doi.org/10.1016/j.epsl.2013.03.005 ER - TY - JOUR T1 - Abdomen-High Elastic Gradient Compression Garments During Post-Spaceflight Stand Tests AN - 1372051997; 18099167 AB - Space Shuttle astronauts wore an inflatable antigravity suit during reentry and landing, and astronauts and cosmonauts wear an elastic-compression garment (with lacing) during Soyuz re-entry and landings and in the first few days of recovery. However, neither garment is an ideal coun-termeasure to spaceflight-induced orthostatic intolerance. Our laboratory has been investigating an elastic graded compression garment (GCG) that applies graduated pressures from the feet to the abdomen for use following International Space Station missions and possibly during exploration missions. Methods: Before and after Shuttle missions, 14 astronauts participated in a 3.5-min stand test. The stand test was conducted without garments preflight. On landing day, 7 astronauts wore the GCG while 7 astronauts did not (controls). Heart rate and blood pressure were measured in all astronauts during prone rest and standing. Stroke volume and cardiac output were measured only in GCG subjects. Results: No astronauts in either group became presyncopal during the stand test preflight or postflight. The change in heart rate from prone to standing was lower in the GCG subjects on landing day than in the control subjects. Within the GCG subjects only, the increase in total peripheral resistance from prone to standing was higher after spaceflight. Conclusions: The GCG prevented tachycardia and increased total peripheral resistance with standing after spaceflight. The GCG shows promise as a countermeasure against post-spaceflight orthostatic intolerance, can be easily donned, and is relatively comfortable to wear, but has not been validated after long-duration spaceflight. JF - Aviation, Space, and Environmental Medicine AU - Stenger, Michael B AU - Lee, Stuart M C AU - Westby, Christian M AU - Ribeiro, L Christine AU - Phillips, Tiffany R AU - Martin, David S AU - Platts, Steven H AD - Wyle Science, Technology, and Engineering Group, 1290 Hercules Blvd., Suite 120, Houston, TX 77058, michael.b.stenger@nasa.gov Y1 - 2013/05// PY - 2013 DA - May 2013 SP - 459 EP - 466 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 5 SN - 0095-6562, 0095-6562 KW - Health & Safety Science Abstracts KW - Heart rate KW - Space shuttle KW - Blood pressure KW - Wear KW - H 2000:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1372051997?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=Abdomen-High+Elastic+Gradient+Compression+Garments+During+Post-Spaceflight+Stand+Tests&rft.au=Stenger%2C+Michael+B%3BLee%2C+Stuart+M+C%3BWestby%2C+Christian+M%3BRibeiro%2C+L+Christine%3BPhillips%2C+Tiffany+R%3BMartin%2C+David+S%3BPlatts%2C+Steven+H&rft.aulast=Stenger&rft.aufirst=Michael&rft.date=2013-05-01&rft.volume=84&rft.issue=5&rft.spage=459&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/10.3357%2FASEM.3528.2013 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-06-01 N1 - Number of references - 20 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Heart rate; Space shuttle; Wear; Blood pressure DO - http://dx.doi.org/10.3357/ASEM.3528.2013 ER - TY - JOUR T1 - NASA Human Research Program Summaries: Cardiac and Vascular Responses to Fluid Shifts in Microgravity AN - 1372051527; 18099179 AB - The immediately evident physical effects of exposure to micro-gravity include signs and symptoms resulting from the acute shift of fluids from the lower body to the chest and head. These include visible facial edema, jugular vein engorgement, a feeling of head fullness, and nasal congestion. There is growing evidence of potentially serious longer-term effects, including increased intracranial pressure and visual impairment. Past efforts using echocardiography and other techniques to better understand cardiovascular changes and cephalad fluid shifts that occur with exposure to microgravity and efforts to mitigate the effects of these fluid shifts with lower-body negative pressure techniques have had limited success. Thus, new techniques are needed to better understand the cardiovascular and other physiological correlates of fluid shift and to develop appropriate counter-measures. The research reported here (a collaborative effort between NASA and the Federal Space Agency of Russia) makes significant progress in that direction. JF - Aviation, Space, and Environmental Medicine AU - Frey, Mary Anne AD - NASA's Human Research Program Office Y1 - 2013/05// PY - 2013 DA - May 2013 SP - 536 EP - 537 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 5 SN - 0095-6562, 0095-6562 KW - Health & Safety Science Abstracts KW - Physiology KW - Edema KW - Russia KW - Research programs KW - H 2000:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1372051527?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=NASA+Human+Research+Program+Summaries%3A+Cardiac+and+Vascular+Responses+to+Fluid+Shifts+in+Microgravity&rft.au=Frey%2C+Mary+Anne&rft.aulast=Frey&rft.aufirst=Mary&rft.date=2013-05-01&rft.volume=84&rft.issue=5&rft.spage=536&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/10.3357%2FASEM.3524.2013 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-06-01 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Physiology; Edema; Research programs; Russia DO - http://dx.doi.org/10.3357/ASEM.3524.2013 ER - TY - JOUR T1 - Temporal and chemical connections between plutons and ignimbrites from the Mount Princeton magmatic center AN - 1371763485; 2013-049539 AB - The Mount Princeton magmatic center, located in central Colorado, consists of the epizonal Mount Princeton batholith, the nested Mount Aetna caldera, and volumetrically minor leucogranites. New CA-TIMS U/Pb zircon ages indicate the majority of the Mount Princeton batholith was emplaced during a period of regional ignimbrite quiescence. The structurally highest unit of quartz monzonite yields a (super 206) Pb/ (super 238) U age of 35.80+ or -0.10 Ma, and the youngest dated unit of the quartz monzonite is a porphyritic unit that yields a (super 206) Pb/ (super 238) U age of 35.37+ or -0.10 Ma. Using the exposed, dated volume of the quartz monzonite and new geochronology yields an estimated pluton filling rate of approximately 0.002 km (super 3) /a. This rate is comparable to the accumulation rates published for other plutons, and at least an order of magnitude slower than fluxes necessary to support accumulation of large eruptible magma volumes. Geochronology for the two large ignimbrites spatially associated with the batholith indicates a temporal disconnect between the vast majority of pluton building and explosive eruption of magma. The Wall Mountain Tuff erupted from a source in the same geographic area as the Mount Princeton batholith at 37.3 Ma (Ar/Ar sanidine), but no structural evidence of a caldera or temporally associated plutonic rocks is known. The Badger Creek Tuff erupted at 34.3 Ma (Ar/Ar sanidine) during the formation of the Mount Aetna caldera in the southern portion of the batholith. Our (super 206) Pb/ (super 238) U age for the Badger Creek Tuff is 34.47+ or -0.05. The only analyzed plutonic rocks of similar age to the Badger Creek Tuff are an extra-caldera dike with a (super 206) Pb/ (super 238) U age of 34.57+ or -0.08 Ma, a ring dike with a (super 206) Pb/ (super 238) U age of 34.48+ or -0.09 Ma, and a portion of the Mount Aetna pluton with a (super 206) Pb/ (super 238) U age of 34.60+ or -0.13 Ma. The small volume intrusions related to the eruption of the Badger Creek Tuff are chemically similar to the ignimbrite and show no signature of crystal-liquid separation in the shallow crust. Copyright 2012 Springer-Verlag Berlin Heidelberg JF - Contributions to Mineralogy and Petrology AU - Mills, Ryan D AU - Coleman, Drew S Y1 - 2013/05// PY - 2013 DA - May 2013 SP - 961 EP - 980 PB - Springer International, Heidelberg - New York VL - 165 IS - 5 SN - 0010-7999, 0010-7999 KW - United States KW - volcanic rocks KW - U/Pb KW - igneous rocks KW - thermal ionization mass spectra KW - mass spectra KW - Cenozoic KW - Mount Aetna Caldera KW - volcanic features KW - major elements KW - dates KW - absolute age KW - central Colorado KW - spectra KW - batholiths KW - trace elements KW - chemical composition KW - geochemistry KW - plutons KW - Badger Creek Tuff KW - ignimbrite KW - Paleogene KW - volcanic centers KW - ICP mass spectra KW - calderas KW - pyroclastics KW - Tertiary KW - intrusions KW - magmas KW - Mount Princeton Batholith KW - volcanoes KW - Colorado KW - Oligocene KW - 03:Geochronology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1371763485?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Contributions+to+Mineralogy+and+Petrology&rft.atitle=Temporal+and+chemical+connections+between+plutons+and+ignimbrites+from+the+Mount+Princeton+magmatic+center&rft.au=Mills%2C+Ryan+D%3BColeman%2C+Drew+S&rft.aulast=Mills&rft.aufirst=Ryan&rft.date=2013-05-01&rft.volume=165&rft.issue=5&rft.spage=961&rft.isbn=&rft.btitle=&rft.title=Contributions+to+Mineralogy+and+Petrology&rft.issn=00107999&rft_id=info:doi/10.1007%2Fs00410-012-0843-4 L2 - http://www.springerlink.com/(zmx2wiu4y01pcgigj5i3jxf5)/app/home/journal.asp?referrer=parent&backto=linkingpublicationresults,1:100406,1 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data supplied by Springer Verlag, Berlin, Federal Republic of Germany N1 - Date revised - 2013-01-01 N1 - Number of references - 97 N1 - Document feature - illus. incl. 3 tables, geol. sketch map N1 - Last updated - 2013-06-27 N1 - CODEN - CMPEAP N1 - SubjectsTermNotLitGenreText - absolute age; Badger Creek Tuff; batholiths; calderas; Cenozoic; central Colorado; chemical composition; Colorado; dates; geochemistry; ICP mass spectra; igneous rocks; ignimbrite; intrusions; magmas; major elements; mass spectra; Mount Aetna Caldera; Mount Princeton Batholith; Oligocene; Paleogene; plutons; pyroclastics; spectra; Tertiary; thermal ionization mass spectra; trace elements; U/Pb; United States; volcanic centers; volcanic features; volcanic rocks; volcanoes DO - http://dx.doi.org/10.1007/s00410-012-0843-4 ER - TY - JOUR T1 - Isotopic and chemical variation of organic nanoglobules in primitive meteorites AN - 1371763194; 2013-049687 AB - Organic nanoglobules are microscopic spherical carbon-rich objects present in chondritic meteorites and other astromaterials. We performed a survey of the morphology, organic functional chemistry, and isotopic composition of 184 nanoglobules in insoluble organic matter (IOM) residues from seven primitive carbonaceous chondrites. Hollow and solid nanoglobules occur in each IOM residue, as well as globules with unusual shapes and structures. Most nanoglobules have an organic functional chemistry similar to, but slightly more carboxyl-rich than, the surrounding IOM, while a subset of nanoglobules have a distinct, highly aromatic functionality. The range of nanoglobule N isotopic compositions was similar to that of nonglobular (super 15) N-rich hotspots in each IOM residue, but nanoglobules account for only about one third of the total (super 15) N-rich hotspots in each sample. Furthermore, many nanoglobules in each residue contained no (super 15) N enrichment above that of bulk IOM. No morphological indicators were found to robustly distinguish the highly aromatic nanoglobules from those that have a more IOM-like functional chemistry, or to distinguish (super 15) N-rich nanoglobules from those that are isotopically normal. The relative abundance of aromatic nanoglobules was lower, and nanoglobule diameters were greater, in more altered meteorites, suggesting the creation/modification of IOM-like nanoglobules during parent-body processing. However, (super 15) N-rich nanoglobules, including many with highly aromatic functional chemistry, likely reflect preaccretionary isotopic fractionation in cold molecular cloud or protostellar environments. These data indicate that no single formation mechanism can explain all of the observed characteristics of nanoglobules, and their properties are likely a result of multiple processes occurring in a variety of environments. Abstract Copyright The Meteoritical Society, 2013. JF - Meteoritics & Planetary Science AU - De Gregorio, Bradley T AU - Stroud, Rhonda M AU - Nittler, Larry R AU - Alexander, Conel M O'D AU - Bassim, Nabil D AU - Cody, George D AU - Kilcoyne, A L David AU - Sandford, Scott A AU - Milam, Stefanie N AU - Nuevo, Michel AU - Zega, Thomas J Y1 - 2013/05// PY - 2013 DA - May 2013 SP - 904 EP - 928 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 5 SN - 1086-9379, 1086-9379 KW - stony meteorites KW - Orgueil Meteorite KW - ion probe data KW - isotopes KW - mass spectra KW - Elephant Moraine Meteorites KW - stable isotopes KW - nitrogen KW - Murchison Meteorite KW - CO chondrites KW - meteorites KW - CR chondrites KW - ALHA 77307 KW - spectra KW - chondrites KW - chemical composition KW - Bells Meteorite KW - carbonaceous composition KW - QUE 99177 KW - CI chondrites KW - GRO 95577 KW - nanoglobules KW - N-15 KW - carbonaceous chondrites KW - TEM data KW - solar nebula KW - morphology KW - organic compounds KW - Allan Hills Meteorites KW - X-ray data KW - Queen Alexandra Range Meteorites KW - EET 92042 KW - CM chondrites KW - Grosvenor Mountains Meteorites KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1371763194?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Isotopic+and+chemical+variation+of+organic+nanoglobules+in+primitive+meteorites&rft.au=De+Gregorio%2C+Bradley+T%3BStroud%2C+Rhonda+M%3BNittler%2C+Larry+R%3BAlexander%2C+Conel+M+O%27D%3BBassim%2C+Nabil+D%3BCody%2C+George+D%3BKilcoyne%2C+A+L+David%3BSandford%2C+Scott+A%3BMilam%2C+Stefanie+N%3BNuevo%2C+Michel%3BZega%2C+Thomas+J&rft.aulast=De+Gregorio&rft.aufirst=Bradley&rft.date=2013-05-01&rft.volume=48&rft.issue=5&rft.spage=904&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12109 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2013-01-01 N1 - Number of references - 98 N1 - PubXState - AR N1 - Document feature - illus. incl. 8 tables N1 - Last updated - 2013-06-27 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - ALHA 77307; Allan Hills Meteorites; Bells Meteorite; carbonaceous chondrites; carbonaceous composition; chemical composition; chondrites; CI chondrites; CM chondrites; CO chondrites; CR chondrites; EET 92042; Elephant Moraine Meteorites; GRO 95577; Grosvenor Mountains Meteorites; ion probe data; isotopes; mass spectra; meteorites; morphology; Murchison Meteorite; N-15; nanoglobules; nitrogen; organic compounds; Orgueil Meteorite; QUE 99177; Queen Alexandra Range Meteorites; solar nebula; spectra; stable isotopes; stony meteorites; TEM data; X-ray data DO - http://dx.doi.org/10.1111/maps.12109 ER - TY - JOUR T1 - A search for amino acids and nucleobases in the Martian meteorite Roberts Massif 04262 using liquid chromatography-mass spectrometry AN - 1371763153; 2013-049680 AB - The investigation into whether Mars contains signatures of past or present life is of great interest to science and society. Amino acids and nucleobases are compounds that are essential for all known life on Earth and are excellent target molecules in the search for potential Martian biomarkers or prebiotic chemistry. Martian meteorites represent the only samples from Mars that can be studied directly in the laboratory on Earth. Here, we analyzed the amino acid and nucleobase content of the shergottite Roberts Massif (RBT) 04262 using liquid chromatography-mass spectrometry. We did not detect any nucleobases above our detection limit in formic acid extracts; however, we did measure a suite of protein and nonprotein amino acids in hot-water extracts with high relative abundances of beta -alanine and gamma -amino-n-butyric acid. The presence of only low (to absent) levels of several proteinogenic amino acids and a lack of nucleobases suggest that this meteorite fragment is fairly uncontaminated with respect to these common biological compounds. The distribution of straight-chained amine-terminal n-omega -amino acids in RBT 04262 resembled those previously measured in thermally altered carbonaceous meteorites (Burton et al. 2012; Chan et al. 2012). A carbon isotope ratio of -24 ppm + or -6 ppm for beta -alanine in RBT 04262 is in the range of reduced organic carbon previously measured in Martian meteorites (Steele et al. 2012). The presence of n-omega -amino acids may be due to a high temperature Fischer-Tropsch-type synthesis during igneous processing on Mars or impact ejection of the meteorites from Mars, but more experimental data are needed to support these hypotheses. Abstract Copyright The Meteoritical Society, 2013. JF - Meteoritics & Planetary Science AU - Callahan, Michael P AU - Burton, Aaron S AU - Elsila, Jamie E AU - Baker, Eleni M AU - Smith, Karen E AU - Glavin, Daniel P AU - Dworkin, Jason P Y1 - 2013/05// PY - 2013 DA - May 2013 SP - 786 EP - 795 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 5 SN - 1086-9379, 1086-9379 KW - stony meteorites KW - nucleobases KW - isotopes KW - Martian meteorites KW - RBT 04262 KW - mass spectra KW - astrobiology KW - stable isotopes KW - Roberts Massif Meteorites KW - SNC Meteorites KW - meteorites KW - carbon KW - amino acids KW - spectra KW - Fischer-Tropsch method KW - isotope ratios KW - liquid chromatograms KW - C-13/C-12 KW - achondrites KW - organic compounds KW - organic acids KW - nucleic acids KW - shergottite KW - RNA KW - chromatograms KW - DNA KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1371763153?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+search+for+amino+acids+and+nucleobases+in+the+Martian+meteorite+Roberts+Massif+04262+using+liquid+chromatography-mass+spectrometry&rft.au=Callahan%2C+Michael+P%3BBurton%2C+Aaron+S%3BElsila%2C+Jamie+E%3BBaker%2C+Eleni+M%3BSmith%2C+Karen+E%3BGlavin%2C+Daniel+P%3BDworkin%2C+Jason+P&rft.aulast=Callahan&rft.aufirst=Michael&rft.date=2013-05-01&rft.volume=48&rft.issue=5&rft.spage=786&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12103 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2013-01-01 N1 - Number of references - 45 N1 - PubXState - AR N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2013-10-17 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - achondrites; amino acids; astrobiology; C-13/C-12; carbon; chromatograms; DNA; Fischer-Tropsch method; isotope ratios; isotopes; liquid chromatograms; Martian meteorites; mass spectra; meteorites; nucleic acids; nucleobases; organic acids; organic compounds; RBT 04262; RNA; Roberts Massif Meteorites; shergottite; SNC Meteorites; spectra; stable isotopes; stony meteorites DO - http://dx.doi.org/10.1111/maps.12103 ER - TY - JOUR T1 - A petrogenetic model for the comagmatic origin of chassignites and nakhlites; inferences from chlorine-rich minerals, petrology, and geochemistry AN - 1371763071; 2013-049683 AB - Twelve samples belonging to the chassignite and nakhlite subgroups of Martian meteorites were investigated using a variety of micro-beam analytical techniques to gain insight into the petrogenesis of these two meteorite classes. There are a striking number of geochemical similarities between the chassignites and nakhlites, including mineralogy and petrology, crystallization age, cosmic-ray exposure age, and radiogenic isotopic compositions. However, there are also geochemical differences, namely in trace element systematics of pyroxenes, that have led some authors to conclude that the nakhlites are comagmatic with each other, but not comagmatic with the chassignites. On the basis of data presented here, we propose a model in which these differences can be reconciled by the addition of an exogenous Cl-rich fluid to the chassignite-nakhlite magma body shortly after the formation of the cumulate horizon that was sampled by the Chassigny meteorite. This model is supported by the textural and chemical associations of the volatile-bearing minerals apatite, amphibole, and biotite, which record a history starting with the addition of a Cl- and LREE-enriched fluid to the magma body. As the magma continued to crystallize, it eventually reached chloride saturation and degassed a Cl-rich fluid phase. Depending on the provenance of the Cl-rich fluid, this model could explain how the chassignites and nakhlites originated from an LREE-depleted source, yet all exhibit LREE-enriched bulk-rock patterns. Additionally, the model explains the range in oxygen fugacity that is recorded by the chassignites and nakhlites because eventual exsolution and loss of Cl-rich fluid phases near the end of crystallization of the nakhlite sequence leads to auto-oxidation of the magma body due to the preferential partitioning of Fe (super 2+) into the fluid phase. Abstract Copyright The Meteoritical Society, 2013. JF - Meteoritics & Planetary Science AU - McCubbin, Francis M AU - Elardo, Stephen M AU - Shearer, Charles K, Jr AU - Smirnov, Alexander AU - Hauri, Erik H AU - Draper, David S Y1 - 2013/05// PY - 2013 DA - May 2013 SP - 819 EP - 853 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 5 SN - 1086-9379, 1086-9379 KW - silicates KW - nakhlite KW - stony meteorites KW - ion probe data KW - Martian meteorites KW - chassignite KW - halogens KW - mass spectra KW - iron KW - electron probe data KW - SNC Meteorites KW - partitioning KW - meteorites KW - pyroxene group KW - cumulates KW - spectra KW - rare earths KW - trace elements KW - chain silicates KW - chlorine KW - apatite KW - magmatism KW - phosphates KW - achondrites KW - ferrous iron KW - provenance KW - volatiles KW - metals KW - magmas KW - petrography KW - exsolution KW - Chassigny Meteorite 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/1371763071?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+petrogenetic+model+for+the+comagmatic+origin+of+chassignites+and+nakhlites%3B+inferences+from+chlorine-rich+minerals%2C+petrology%2C+and+geochemistry&rft.au=McCubbin%2C+Francis+M%3BElardo%2C+Stephen+M%3BShearer%2C+Charles+K%2C+Jr%3BSmirnov%2C+Alexander%3BHauri%2C+Erik+H%3BDraper%2C+David+S&rft.aulast=McCubbin&rft.aufirst=Francis&rft.date=2013-05-01&rft.volume=48&rft.issue=5&rft.spage=819&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12095 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2013-01-01 N1 - Number of references - 238 N1 - PubXState - AR N1 - Document feature - illus. incl. 5 tables N1 - SuppNotes - Supplemental information/data is available in the online version of this article N1 - Last updated - 2013-06-27 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - achondrites; apatite; chain silicates; chassignite; Chassigny Meteorite; chlorine; cumulates; electron probe data; exsolution; ferrous iron; halogens; ion probe data; iron; magmas; magmatism; Martian meteorites; mass spectra; metals; meteorites; nakhlite; partitioning; petrography; phosphates; provenance; pyroxene group; rare earths; silicates; SNC Meteorites; spectra; stony meteorites; trace elements; volatiles DO - http://dx.doi.org/10.1111/maps.12095 ER - TY - JOUR T1 - The Vestan cataclysm; impact-melt clasts in howardites and the bombardment history of 4 Vesta AN - 1371762972; 2013-049679 AB - Crystalline impact-melt samples were created in high-temperature environments by relatively large craters and, as such, give additional constraints on the nature of the impacts that created them. This article provides new (super 40) Ar- (super 39) Ar ages of impact-melt clasts in howardites and shows that these clasts formed on the HED parent body, 4 Vesta, within the time period 3.3-3.8 Ga. Rather than resulting from an increased number of impacts, however, impact-melted material in howardites may result from unusually high-velocity impacts occurring in the asteroid belt during this period. This scenario is similar to the late heavy bombardment of the Moon, pointing to an unusual dynamical event at this time across the inner solar system. Therefore, impact-melt rocks in howardites uniquely record a Vestan cataclysm. Abstract Copyright Published 2013. This article is a U.S. Government work and is in the public domain in the USA. JF - Meteoritics & Planetary Science AU - Cohen, Barbara A Y1 - 2013/05// PY - 2013 DA - May 2013 SP - 771 EP - 785 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 5 SN - 1086-9379, 1086-9379 KW - stony meteorites KW - asteroids KW - Elephant Moraine Meteorites KW - Dawn Mission KW - melts KW - temperature KW - electron probe data KW - meteorites KW - impact melts KW - hypervelocity impacts KW - howardite KW - dates KW - absolute age KW - velocity KW - chemical composition KW - Ar/Ar KW - solar system KW - GRO 95574 KW - EET 87513 KW - QUE 97001 KW - Vesta Asteroid KW - Moon KW - parent bodies KW - HED meteorites KW - Vestan cataclysm KW - bombardment KW - clasts KW - impacts KW - QUE 94200 KW - achondrites KW - Queen Alexandra Range Meteorites KW - high temperature KW - Grosvenor Mountains Meteorites KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1371762972?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+Vestan+cataclysm%3B+impact-melt+clasts+in+howardites+and+the+bombardment+history+of+4+Vesta&rft.au=Cohen%2C+Barbara+A&rft.aulast=Cohen&rft.aufirst=Barbara&rft.date=2013-05-01&rft.volume=48&rft.issue=5&rft.spage=771&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12101 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2013-01-01 N1 - Number of references - 64 N1 - PubXState - AR N1 - Document feature - illus. incl. 3 tables N1 - SuppNotes - Supplemental information/data is available in the online version of this article N1 - Last updated - 2013-06-27 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - absolute age; achondrites; Ar/Ar; asteroids; bombardment; chemical composition; clasts; dates; Dawn Mission; EET 87513; electron probe data; Elephant Moraine Meteorites; GRO 95574; Grosvenor Mountains Meteorites; HED meteorites; high temperature; howardite; hypervelocity impacts; impact melts; impacts; melts; meteorites; Moon; parent bodies; QUE 94200; QUE 97001; Queen Alexandra Range Meteorites; solar system; stony meteorites; temperature; velocity; Vesta Asteroid; Vestan cataclysm DO - http://dx.doi.org/10.1111/maps.12101 ER - TY - JOUR T1 - Wuestite in the fusion crust of Almahata Sitta sulfide-metal assemblage MS-166; evidence for oxygen in metallic melts AN - 1371762588; 2013-049676 AB - Meteorite fusion crusts form during the passage of a meteoroid through the Earth's atmosphere and are highly oxidized intergrowths as documented by the presence of e.g., oxides. The porous and irregular fusion crust surrounding the Almahata Sitta sulfide-metal assemblage MS-166 was found highly enriched in wustite (Fe (sub 1-x) O). Frictional heating of the outer portions of the assemblage caused partial melting of predominantly the Fe-sulfide and minor amounts of the outer Ni-rich portions of the originally zoned metal in MS-166. Along with melting significant amounts of oxygen were incorporated into the molten fusion crust and mainly FeS was oxidized and desulfurized to form wustite. Considerable amounts of FeS were lost due to ablation, whereas the cores of the large metal grains appear largely unmelted leaving behind metal grains and surrounding wustite-rich material (matte). Metal grains along with the surrounding matte typically form an often highly porous framework of globules interconnected with the matte. Although textures and chemical composition suggest that melting of Fe,Ni metal occurred only partially (Ni-rich rims), there is a trace elemental imprint of siderophile element partitioning influenced by oxygen in the metallic melt as indicated by the behavior of W and Ga, the two elements significantly affected by oxygen in a metallic melt. It is remarkable that MS-166 survived the atmospheric passage as troilite inclusions in iron meteorites are preferentially destroyed. Abstract Copyright The Meteoritical Society, 2013. JF - Meteoritics & Planetary Science AU - Horstmann, Marian AU - Humayun, Munir AU - Harries, Dennis AU - Langenhorst, Falko AU - Chabot, Nancy L AU - Bischoff, Addi AU - Zolensky, Michael E Y1 - 2013/05// PY - 2013 DA - May 2013 SP - 730 EP - 743 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 5 SN - 1086-9379, 1086-9379 KW - ablation KW - oxygen KW - enrichment KW - partial melting KW - meteoroids KW - melts KW - iron KW - electron probe data KW - partitioning KW - meteorites KW - mineral composition KW - melting KW - oxides KW - Almahata Sitta Meteorite KW - alloys KW - trace elements KW - chemical composition KW - wustite KW - troilite KW - fusion crust KW - oxidation KW - desulfurization KW - friction KW - porous materials KW - siderophile elements KW - intergrowths KW - TEM data KW - iron sulfides KW - metals KW - nickel KW - sulfides KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1371762588?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Wuestite+in+the+fusion+crust+of+Almahata+Sitta+sulfide-metal+assemblage+MS-166%3B+evidence+for+oxygen+in+metallic+melts&rft.au=Horstmann%2C+Marian%3BHumayun%2C+Munir%3BHarries%2C+Dennis%3BLangenhorst%2C+Falko%3BChabot%2C+Nancy+L%3BBischoff%2C+Addi%3BZolensky%2C+Michael+E&rft.aulast=Horstmann&rft.aufirst=Marian&rft.date=2013-05-01&rft.volume=48&rft.issue=5&rft.spage=730&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12097 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2013-01-01 N1 - Number of references - 43 N1 - PubXState - AR N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2013-06-27 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - ablation; alloys; Almahata Sitta Meteorite; chemical composition; desulfurization; electron probe data; enrichment; friction; fusion crust; intergrowths; iron; iron sulfides; melting; melts; metals; meteorites; meteoroids; mineral composition; nickel; oxidation; oxides; oxygen; partial melting; partitioning; porous materials; siderophile elements; sulfides; TEM data; trace elements; troilite; wustite DO - http://dx.doi.org/10.1111/maps.12097 ER - TY - JOUR T1 - Modeling wave propagation and scattering from impact damage for Structural Health Monitoring of composite sandwich plates AN - 1367493056; 18090121 AB - Results of modeling of the wave propagation, impact, and damage detection in a sandwich honeycomb plate using piezoelectric actuator/sensor scheme are reported. A finite element model of honeycomb sandwich panel that reproduces accurately experimental setup and takes into account main characteristic features of the real composite panel, impactor, lead zirconate titanate actuator, and sensors is developed. The impact is simulated to obtain damage with parameters close to those observed in the experiment. Both in simulations and in experiment, the voltage signal of a given shape is applied to the lead zirconate titanate actuators to excite acoustic wave, and the electrical signals collected from the lead zirconate titanate sensors mounted to the panel are used to study wave propagation in the sandwich panel. The results of simulation are shown to be in good agreement with the experimental results both before and after the impact. Properties of acoustic wave propagating in composite sandwich honeycomb panels are discussed. JF - Structural Health Monitoring AU - Luchinsky, Dmitry G AU - Hafiychuk, Vasyl AU - Smelyanskiy, Vadim N AU - Kessler, Seth AU - Walker, James AU - Miller, Jim AU - Watson, Michael AD - Mission Critical Technologies, Inc., El Segundo, CA, USA, Ames Research Center, NASA, Moffett Field, CA, USA Y1 - 2013/05// PY - 2013 DA - May 2013 SP - 296 EP - 308 PB - Sage Publications Ltd., 6 Bonhill St. London EC2A 4PU United Kingdom VL - 12 IS - 3 SN - 1475-9217, 1475-9217 KW - Health & Safety Science Abstracts KW - Honeycomb sandwich plates KW - waves scattering KW - impact behavior KW - delamination KW - nondestructive testing KW - Finite element method KW - Composite materials KW - Sensors KW - Acoustics KW - Simulation KW - Lead KW - H 15000:Civil/Structural Engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1367493056?accountid=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=Structural+Health+Monitoring&rft.atitle=Modeling+wave+propagation+and+scattering+from+impact+damage+for+Structural+Health+Monitoring+of+composite+sandwich+plates&rft.au=Luchinsky%2C+Dmitry+G%3BHafiychuk%2C+Vasyl%3BSmelyanskiy%2C+Vadim+N%3BKessler%2C+Seth%3BWalker%2C+James%3BMiller%2C+Jim%3BWatson%2C+Michael&rft.aulast=Luchinsky&rft.aufirst=Dmitry&rft.date=2013-05-01&rft.volume=12&rft.issue=3&rft.spage=296&rft.isbn=&rft.btitle=&rft.title=Structural+Health+Monitoring&rft.issn=14759217&rft_id=info:doi/10.1177%2F1475921713483351 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-06-01 N1 - Number of references - 26 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Finite element method; Composite materials; Sensors; Acoustics; Simulation; Lead DO - http://dx.doi.org/10.1177/1475921713483351 ER - TY - JOUR T1 - Hiromeri: A Specialty Ham of Cyprus - Historical Evidence, Culinary and Cultural Perspectives AN - 1347684545 AB - Hiromeri is a specialty ham of Cyprus, made of smoked pork leg that is matured in wine. Until now there has been no systematic effort to present historical evidence that will support the Cypriot authenticity of this product. In this article, the historical evidence from sixteenth to twentieth centuries, referring to the production and trade of hiromeri in Cyprus, is presented. The evidence is drawn from archival testimony, travelers' descriptions, old history books, and essays on agricultural production. Moreover, a description of the hiromeri production process as well as past and current culinary uses and customs associated with its production and consumption are presented. [PUBLICATION ABSTRACT] JF - Ecology of Food and Nutrition AU - Patapiou, Nasa AU - Lazarou, Chrystalleni Y1 - 2013 PY - 2013 DA - 2013 SP - 239 CY - Philadelphia PB - Taylor & Francis Ltd. VL - 52 IS - 3 SN - 03670244 KW - Nutrition And Dietetics KW - Agricultural production KW - Pork KW - Wines KW - Nutrition KW - Cyprus UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1347684545?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apublichealth&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecology+of+Food+and+Nutrition&rft.atitle=Hiromeri%3A+A+Specialty+Ham+of+Cyprus+-+Historical+Evidence%2C+Culinary+and+Cultural+Perspectives&rft.au=Patapiou%2C+Nasa%3BLazarou%2C+Chrystalleni&rft.aulast=Patapiou&rft.aufirst=Nasa&rft.date=2013-05-01&rft.volume=52&rft.issue=3&rft.spage=239&rft.isbn=&rft.btitle=&rft.title=Ecology+of+Food+and+Nutrition&rft.issn=03670244&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright Taylor & Francis Ltd. 2013 N1 - Last updated - 2013-05-03 N1 - SubjectsTermNotLitGenreText - Cyprus ER - TY - JOUR T1 - The role of groundwater in the Amazon water cycle; 3, Influence on terrestrial water storage computations and comparison with GRACE AN - 1656034526; 2014-025170 AB - We explore the mechanisms whereby groundwater influences terrestrial water storage (TWS) in the Amazon using GRACE observations and two contrasting versions of the LEAF-Hydro-Flood hydrological model: one with and the other without an interactive groundwater. We find that, first, where the water table is shallow as in northwestern Amazonia and floodplains elsewhere, subsurface stores (vadose zone and groundwater) are nearly saturated year-round, hence river and flooding dominate TWS variation; where the water table is deep as in southeastern Amazonia, the large subsurface storage capacity holds the infiltrated water longer before releasing it to streams, hence the subsurface storage dominates TWS variation. Second, over the whole Amazon, the subsurface water contribution far exceeds surface water contribution to total TWS variations. Based on LEAF-Hydro-Flood simulations, 71% of TWS change is from subsurface water, 24% from flood water, and 5% from water in river channels. Third, the subsurface store includes two competing terms, soil water in the vadose zone and groundwater below the water table. As the water table rises, the length of vadose zone is shortened and hence the change in groundwater store is accompanied by an opposite change in soil water store resulting in their opposite phase and contributions to total TWS. We conclude that the inclusion of a prognostic groundwater store and its interactions with the vadose zone, rivers, and floodplains in hydrological simulations enhances seasonal amplitudes and delays seasonal peaks of TWS anomaly, leading to an improved agreement with GRACE observations. Abstract Copyright (2013), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Atmospheres AU - Pokhrel, Yadu N AU - Fan, Ying AU - Miguez-Macho, Gonzalo AU - Yeh, Pat J F AU - Han, Shin-Chan Y1 - 2013/04/27/ PY - 2013 DA - 2013 Apr 27 SP - 3233 EP - 3244 PB - Blackwell Wiley for American Geophysical Union, Washington, DC VL - 118 IS - 8 SN - 2169-897X, 2169-897X KW - hydrology KW - water storage KW - surface water KW - unsaturated zone KW - GRACE KW - satellite methods KW - ground water KW - water table KW - South America KW - hydrologic cycle KW - Amazon River KW - floods KW - hydrodynamics KW - Amazon Basin KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656034526?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+role+of+groundwater+in+the+Amazon+water+cycle%3B+3%2C+Influence+on+terrestrial+water+storage+computations+and+comparison+with+GRACE&rft.au=Pokhrel%2C+Yadu+N%3BFan%2C+Ying%3BMiguez-Macho%2C+Gonzalo%3BYeh%2C+Pat+J+F%3BHan%2C+Shin-Chan&rft.aulast=Pokhrel&rft.aufirst=Yadu&rft.date=2013-04-27&rft.volume=118&rft.issue=8&rft.spage=3233&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2Fjgrd.50335 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 - 2014-01-01 N1 - Number of references - 22 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - Amazon Basin; Amazon River; floods; GRACE; ground water; hydrodynamics; hydrologic cycle; hydrology; satellite methods; South America; surface water; unsaturated zone; water storage; water table DO - http://dx.doi.org/10.1002/jgrd.50335 ER - TY - JOUR T1 - Downscaling reanalysis over continental Africa with a regional model: NCEP versus ERA Interim forcing AN - 1458539848; 18769563 AB - Five annual climate cycles (1998-2002) are simulated for continental Africa and adjacent oceans by a regional atmospheric model (RM3). RM3 horizontal grid spacing is 0.44 degree at 28 vertical levels. Each of 2 simulation ensembles is driven by lateral boundary conditions from each of 2 alternative reanalysis data sets. One simulation downscales National Center for Environmental Prediction reanalysis 2 (NCPR2) and the other the European Centre for Medium Range Weather Forecasts Interim reanalysis (ERA-I). NCPR2 data are archived at 2.5 degree grid spacing, while a recent version of ERA-I provides data at 0.75 degree spacing. ERA-I-forced simulations are recommended by the Coordinated Regional Downscaling Experiment (CORDEX). Comparisons of the 2 sets of simulations with each other and with observational evidence assess the relative performance of each downscaling system. A third simulation also uses ERA-I forcing, but degraded to the same horizontal resolution as NCPR2. RM3-simulated pentad and monthly mean precipitation data are compared to Tropical Rainfall Measuring Mission (TRMM) data, gridded at 0.5 degree , and RM3-simulated circulation is compared to both reanalyses. Results suggest that each downscaling system provides advantages and disadvantages relative to the other. The RM3/NCPR2 achieves a more realistic northward advance of summer monsoon rains over West Africa, but RM3/ERAI creates the more realistic monsoon circulation. Both systems recreate some features of July- September 1999 minus 2002 precipitation differences. Degrading the resolution of ERA-I driving data unrealistically slows the monsoon circulation and considerably diminishes summer rainfall rates over West Africa. The high resolution of ERA-I data, therefore, contributes to the quality of the downscaling, but NCPR2 lateral boundary conditions nevertheless produce better simulations of some features. JF - Climate Research AU - Druyan, L M AU - Fulakeza, M AD - Center for Climate Systems Research, Columbia University, 2880 Broadway, New York, New York 10025, USA, ldruyan@giss.nasa.gov Y1 - 2013/04/24/ PY - 2013 DA - 2013 Apr 24 VL - 56 IS - 3 SN - 0936-577X, 0936-577X KW - Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Environment Abstracts; Meteorological & Geoastrophysical Abstracts KW - Rainfall KW - Hydrologic Data KW - Weather forecasting KW - Modelling KW - Weather KW - Atmospheric circulation KW - Model Studies KW - ASE, Africa KW - Numerical simulations KW - Africa KW - Monsoons KW - Prediction KW - Monthly mean precipitation KW - Summer KW - Boundary conditions KW - Data reanalysis KW - Environmental factors KW - Atmospheric models KW - Summer rainfall KW - Ocean-atmosphere system KW - Archives KW - Marine KW - Summer monsoon KW - Boundary Conditions KW - Climates KW - Climate KW - Simulation KW - Precipitation KW - Regional-scale models KW - Oceans KW - Monsoon circulation KW - Tropical Rainfall Measuring Mission (TRMM) KW - AQ 00001:Water Resources and Supplies KW - SW 5010:Network design KW - Q2 09148:Palaeo-studies KW - M2 551.58:Climatology (551.58) KW - ENA 01:Air Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1458539848?accountid=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+Research&rft.atitle=Downscaling+reanalysis+over+continental+Africa+with+a+regional+model%3A+NCEP+versus+ERA+Interim+forcing&rft.au=Druyan%2C+L+M%3BFulakeza%2C+M&rft.aulast=Druyan&rft.aufirst=L&rft.date=2013-04-24&rft.volume=56&rft.issue=3&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Climate+Research&rft.issn=0936577X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-11-01 N1 - Last updated - 2015-04-16 N1 - SubjectsTermNotLitGenreText - Climate; Ocean-atmosphere system; Simulation; Archives; Weather forecasting; Environmental factors; Modelling; Monsoons; Summer monsoon; Monthly mean precipitation; Atmospheric circulation; Precipitation; Data reanalysis; Boundary conditions; Atmospheric models; Summer rainfall; Numerical simulations; Regional-scale models; Monsoon circulation; Tropical Rainfall Measuring Mission (TRMM); Prediction; Weather; Oceans; Rainfall; Summer; Boundary Conditions; Climates; Hydrologic Data; Model Studies; ASE, Africa; Africa; Marine ER - TY - RPRT T1 - SPACEX TEXAS LAUNCH SITE, CAMERON COUNTY, TEXAS. AN - 16391292; 15699 AB - PURPOSE: The issuance of licenses and/or experimental permits that would allow Space Exploration Technologies Corp. (SpaceX) to launch the Falcon 9 and Falcon Heavy orbital vertical launch vehicles and a variety of reusable suborbital launch vehicles from a site on privately owned property in Cameron County, Texas is proposed. Proposed operations would consist of up to 12 launches per year with a maximum of two Falcon Heavy launches, through the year 2022. To support these launches, SpaceX has proposed the construction of a vertical launch area and a control center area at a site approximately 17 miles east-northeast of the Brownsville/South Padre Island International Airport and five miles south of South Padre Island. All facilities would be constructed through private funding, on currently undeveloped privately-owned property that would be purchased or leased by SpaceX. In addition, a new underground power line would be installed in the State Highway 4 road right-of-way from the control center area to the vertical launch area. All Falcon 9 and Falcon Heavy launches would be expected to have commercial payloads, including satellites or experimental payloads. In addition to standard payloads, the Falcon 9 and Falcon Heavy may also carry a capsule, such as the SpaceX Dragon capsule. The Falcon 9 and Falcon Heavy use liquid fuels including liquid oxygen and rocket propellant-1. All launch trajectories would be to the east over the Gulf of Mexico and sonic booms generated by launch events would impact the ocean surface 40 miles off the coast and would not be audible on land. The majority of launches would be conducted between the hours of 7:00 a.m. and 7:00 p.m. However, there could be one nighttime launch per year. SpaceX proposes to limit public access at two pre-defined checkpoints on State Highway 4 for up to 15 hours on launch day, with six hours being the closure time for a nominal launch. In addition to the proposed action, this draft EIS considers a No Action Alternative. POSITIVE IMPACTS: Authorization would respond to the statutory direction from Congress under the Commercial Space Launch Act to encourage, facilitate, and promote commercial space launch and reentry activities by the private sector in order to strengthen and expand U.S. space transportation infrastructure. NEGATIVE IMPACTS: Construction would result in direct impact to 3.3 acres of wetlands and indirect impact to 2.9 acres of wetlands. The proposed action would displace 15.7 acres of upland habitat and is likely to adversely affect the piping plover and its critical habitat, the northern aplomado falcon, and the jaguarundi and ocelot. The proposed vertical launch and control center areas would likely have a significant impact on visual resources. Three historic properties within the five-mile area of potential influence may be physically damaged from vibrations caused by high noise levels from a Falcon vehicle launch. Nighttime launch operations would result in considerably higher levels of light emissions than those currently present from Boca Chica Village. LEGAL MANDATES: Commercial Space Launch Act of 2011 (51 U.S.C. 50901 et seq.), Federal Water Pollution Control Act of 1972 (33 U.S.C. 1251 et seq.) and River and Harbor Act of 1899 (33 U.S.C. 401 et seq.). JF - EPA number: 130098, Draft EIS--350 pages, Appendices--548 pages, April 19, 2013 PY - 2013 KW - Air Transportation KW - Air Quality Assessments KW - Aircraft KW - Aircraft Noise KW - Birds KW - Historic Sites KW - Noise Assessments KW - Section 106 Statements KW - Section 4(f) Statements KW - Spacecraft KW - Visual Resources KW - Wetlands KW - Wildlife KW - Wildlife Habitat KW - Texas KW - Commercial Space Launch Act of 2011, Compliance KW - Federal Water Pollution Control Act of 1972, Section 404 Permits KW - River and Harbor Act of 1899, Section 10 Permits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16391292?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/Environmental+Impact+Statements%3A+Digests&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=report&rft.jtitle=&rft.atitle=&rft.au=&rft.aulast=&rft.aufirst=&rft.date=2013-04-19&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=SPACEX+TEXAS+LAUNCH+SITE%2C+CAMERON+COUNTY%2C+TEXAS.&rft.title=SPACEX+TEXAS+LAUNCH+SITE%2C+CAMERON+COUNTY%2C+TEXAS.&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Name - Department of Transportation, Federal Aviation Administration, Office of Commercial Space Transportation, Washington, District of Columbia; DOT N1 - Date revised - 2013-07-01 N1 - SuppNotes - Draft. Preparation date: April 19, 2013 N1 - Last updated - 2013-07-25 ER - TY - NEWS T1 - NASA Celebrates Four Decades of Plucky Pioneer 11 AN - 1327549153 JF - UPI Space Daily AU - James Schalkwyk for Ames Research Center Y1 - 2013/04/16/ PY - 2013 DA - 2013 Apr 16 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1327549153?accountid=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+Celebrates+Four+Decades+of+Plucky+Pioneer+11&rft.au=James+Schalkwyk+for+Ames+Research+Center&rft.aulast=James+Schalkwyk+for+Ames+Research+Center&rft.aufirst=&rft.date=2013-04-16&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 - 2013-04-17 ER - TY - JOUR T1 - Hydrothermal alteration of the Ediacaran Doushantuo Formation in the Yangtze Gorges area (south China) AN - 1420516367; 2013-065100 AB - The geochemical and fossil record preserved in the Ediacaran age (635-551 Ma) Doushantuo Formation of South China has been extensively examined to explore the impact of changing climate and the oxidation state of the oceans on the development and distribution of early multicellular life. In the Yangtze Gorges area, this formation shows many of the geochemical trends and features thought to typify global ocean chemistry in the Ediacaran Period, but there are indications that post-sedimentary processes modified these signals. This study of clay minerals and organic matter builds a more detailed picture of the type and degree of post-sedimentary alteration at different stratigraphic levels of the formation and focuses on how this alteration influenced stable carbon and oxygen isotope records. In the cratonward Jiulongwan and Huajipo sections of the Doushantuo Formation, its lower part (Members 1 and 2) consists largely of dolomitic shale, rich in authigenic saponite that crystallized in an alkaline sedimentary basin. Saponite has been altered to chlorite via corrensite across tens of meters of strata in lower Member 2, with increased alteration downward toward the cap dolostone. The greater chloritization is accompanied by lower delta (super 18) O and higher delta D values of trioctahedral clays. This pattern of alteration of trioctahedral clays is likely due to hydrothermal fluid activity in the underlying, relatively permeable Nantuo Formation and cap dolostone. A concomitant increase of solid bitumen reflectance toward the base of the formation supports this idea. In the uppermost part of the formation in the Yangtze Gorges area (Member 4), a typical open water marine dolomitic shale rich in illite and organic matter, increases in the methylphenanthrenes ratio index and solid bitumen reflectance correlate with decrease of the bulk rock K/Al ratio upward, providing evidence for hot fluid migration above the nearly impermeable shale. Clay from the upper part of the formation is enriched in (super 18) O, but not in D, relative to clay from the lower parts, indicating progressive (super 18) O-enrichment of hydrothermal fluids that percolated upward and laterally through permeable (super 18) O-rich carbonates. A maximum hydrothermal-alteration temperature of nearly equal 200 degrees C is estimated from a calibration curve for illitization during burial diagenesis, but given that the hydrothermal activity probably occurred in short pulses, the temperature could have been much higher. K-Ar ages are consistent across different size fractions of fine illite from Member 4 shale ( nearly equal 430 Ma) and from a K-bentonite bed near the base of Member 2 in the Jiuqunao section ( nearly equal 325 Ma), nearly equal 25 km from Jiulongwan and Huajipo. These age values show that the diagenetic illite of the Doushantuo Formation is a product of either deep burial diagenesis overprinted by spatially limited hydrothermal activity or of two localized hydrothermal events. Patterns of carbonate (super 13) C and (super 18) O depletion in the basal Doushantuo Formation are similar to chloritization trends and (super 18) O variation in diagenetic clay minerals. Given independent evidence for (super 13) C depletion of hydrothermal fluids, these trends indicate carbonate-fluid isotope exchange commensurate with the degree of post-sedimentary alteration, supporting a model of lithologically controlled differential diagenesis induced by hydrothermal fluids as the main control on C and O isotope variability in this stratigraphic interval. This model could potentially explain other notable delta (super 13) C excursions higher up in Member 3. Abstract Copyright (2013) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Derkowski, Arkadiusz AU - Bristow, Thomas F AU - Wampler, J M AU - Srodon, Jan AU - Marynowski, Leszek AU - Elliott, W Crawford AU - Chamberlain, C Page Y1 - 2013/04/15/ PY - 2013 DA - 2013 Apr 15 SP - 279 EP - 298 PB - Elsevier, New York, NY VL - 107 SN - 0016-7037, 0016-7037 KW - Far East KW - southern China KW - X-ray diffraction data KW - paleo-oceanography KW - paleontology KW - sedimentary rocks KW - mineral composition KW - paleotemperature KW - carbon KW - thermal maturity KW - absolute age KW - macerals KW - Sinian KW - depositional environment KW - Asia KW - textures KW - shale KW - biochemistry KW - C-13/C-12 KW - biologic evolution KW - organic compounds KW - Yangtze Three Gorges KW - K/Ar KW - Doushantuo Formation KW - clastic rocks KW - lithostratigraphy KW - alteration KW - upper Precambrian KW - oxygen KW - Ediacaran KW - isotopes KW - metasomatism KW - stable isotopes KW - Rock-Eval KW - pyrolysis KW - dates KW - hydrothermal alteration KW - China KW - Neoproterozoic KW - Precambrian KW - isotope ratios KW - Proterozoic KW - O-18/O-16 KW - paleoenvironment KW - D/H KW - hydrogen KW - vitrinite reflectance KW - sedimentary petrology KW - 12:Stratigraphy KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1420516367?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Hydrothermal+alteration+of+the+Ediacaran+Doushantuo+Formation+in+the+Yangtze+Gorges+area+%28south+China%29&rft.au=Derkowski%2C+Arkadiusz%3BBristow%2C+Thomas+F%3BWampler%2C+J+M%3BSrodon%2C+Jan%3BMarynowski%2C+Leszek%3BElliott%2C+W+Crawford%3BChamberlain%2C+C+Page&rft.aulast=Derkowski&rft.aufirst=Arkadiusz&rft.date=2013-04-15&rft.volume=107&rft.issue=&rft.spage=279&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2013.01.015 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2013-01-01 N1 - Number of references - 70 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables, geol. sketch map N1 - SuppNotes - Includes appendices N1 - Last updated - 2013-08-15 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - absolute age; alteration; Asia; biochemistry; biologic evolution; C-13/C-12; carbon; China; clastic rocks; D/H; dates; depositional environment; Doushantuo Formation; Ediacaran; Far East; hydrogen; hydrothermal alteration; isotope ratios; isotopes; K/Ar; lithostratigraphy; macerals; metasomatism; mineral composition; Neoproterozoic; O-18/O-16; organic compounds; oxygen; paleo-oceanography; paleoenvironment; paleontology; paleotemperature; Precambrian; Proterozoic; pyrolysis; Rock-Eval; sedimentary petrology; sedimentary rocks; shale; Sinian; southern China; stable isotopes; textures; thermal maturity; upper Precambrian; vitrinite reflectance; X-ray diffraction data; Yangtze Three Gorges DO - http://dx.doi.org/10.1016/j.gca.2013.01.015 ER - TY - JOUR T1 - Geochimica et Cosmochimica Acta AN - 1420513731; 2013-065104 JF - Geochimica et Cosmochimica Acta AU - Keller, Lindsay P AU - Messenger, Scott Y1 - 2013/04/15/ PY - 2013 DA - 2013 Apr 15 SP - 341 EP - 344 PB - Elsevier, New York, NY VL - 107 SN - 0016-7037, 0016-7037 KW - solar system KW - stony meteorites KW - cosmochemistry KW - interplanetary dust KW - meteorites KW - cosmic dust KW - mineral composition KW - glass with embedded metal and sulfide grains KW - metals KW - chondrites KW - chemical composition KW - sulfides KW - GEMS grains KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1420513731?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Geochimica+et+Cosmochimica+Acta&rft.au=Keller%2C+Lindsay+P%3BMessenger%2C+Scott&rft.aulast=Keller&rft.aufirst=Lindsay&rft.date=2013-04-15&rft.volume=107&rft.issue=&rft.spage=341&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2012.11.012 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2013-01-01 N1 - Number of references - 30 N1 - PubXState - NY N1 - Document feature - illus. N1 - SuppNotes - For reference to discussion see Bradley, J. P., Geochimica et Cosmochimica Acta, Vol. 107, p. 336-340, 2013; for reference to original see Keller, L. P. and Messenger, S., Geochimica et Cosmochimica Acta, Vol. 75, p. 5336-5365, 2011 N1 - Last updated - 2013-10-17 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - chemical composition; chondrites; cosmic dust; cosmochemistry; GEMS grains; glass with embedded metal and sulfide grains; interplanetary dust; metals; meteorites; mineral composition; solar system; stony meteorites; sulfides DO - http://dx.doi.org/10.1016/j.gca.2012.11.012 ER - TY - JOUR T1 - Experimental evidence of fast transport of trace elements in planetary basaltic crusts by high temperature metamorphism AN - 1420508212; 2013-063155 AB - Incompatible elements (IEs) such as K, P, Ti, and rare earth elements (REEs) provide important constraints on the geochemistry and chronology of basaltic meteorites, most of which experienced complicated post-crystallization histories. These elements are immobile under subsolidus conditions because of their slow diffusion rates in planetary basalt minerals such as pyroxene and plagioclase. Thus, IEs are considered to preserve in most cases, reliable records of formation processes, even in ancient rocks that have undergone moderate thermal processing. However, observations of natural planetary samples suggest that melting of IE accessory carrier phases enhances the mobilization of such elements. Here we show that IEs are rapidly transported by near-solidus partial melting of highly IE-enriched minor phases including Ca-phosphate and Ti-rich phases. These partial melts occur as interconnected veins along cracks and fractures, and as thin films on surfaces of pore spaces, indicating that the melt mobilization is driven by surface tension. The melt transport provides the necessary condition for melt migration consistent with the presence of the depleted basaltic eucrites. Also, reaction between major minerals pyroxene and plagioclase, and partial melts may cause disturbance and resetting of some isotopic systems. These results have important implications for a range of geochemical investigations. In particular, the elemental fractionation resulting from such partial melting may result in improper age determinations. Abstract Copyright (2013) Elsevier, B.V. JF - Earth and Planetary Science Letters AU - Yamaguchi, A AU - Mikouchi, T AU - Ito, M AU - Shirai, N AU - Barrat, J A AU - Messenger, S AU - Ebihara, M Y1 - 2013/04/15/ PY - 2013 DA - 2013 Apr 15 SP - 101 EP - 109 PB - Elsevier, Amsterdam VL - 368 SN - 0012-821X, 0012-821X KW - silicates KW - volcanic rocks KW - stony meteorites KW - ion probe data KW - igneous rocks KW - partial melting KW - mass spectra KW - temperature KW - electron probe data KW - meteorites KW - fractures KW - pyroxene group KW - mineral composition KW - melting KW - transport KW - basalts KW - framework silicates KW - spectra KW - trace elements KW - chemical composition KW - chain silicates KW - plagioclase KW - experimental studies KW - diffusion KW - incompatible elements KW - surface tension KW - thermal metamorphism KW - metamorphism KW - achondrites KW - cracks KW - eucrite KW - NanoSIMS KW - mobilization KW - feldspar group KW - high temperature KW - crust KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1420508212?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Experimental+evidence+of+fast+transport+of+trace+elements+in+planetary+basaltic+crusts+by+high+temperature+metamorphism&rft.au=Yamaguchi%2C+A%3BMikouchi%2C+T%3BIto%2C+M%3BShirai%2C+N%3BBarrat%2C+J+A%3BMessenger%2C+S%3BEbihara%2C+M&rft.aulast=Yamaguchi&rft.aufirst=A&rft.date=2013-04-15&rft.volume=368&rft.issue=&rft.spage=101&rft.isbn=&rft.btitle=&rft.title=Earth+and+Planetary+Science+Letters&rft.issn=0012821X&rft_id=info:doi/10.1016%2Fj.epsl.2013.02.036 L2 - http://www.sciencedirect.com/science/journal/0012821X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2013-01-01 N1 - Number of references - 32 N1 - Document feature - illus. incl. 5 tables N1 - SuppNotes - Supplemental information/data is available in the online version of this article N1 - Last updated - 2013-08-15 N1 - CODEN - EPSLA2 N1 - SubjectsTermNotLitGenreText - achondrites; basalts; chain silicates; chemical composition; cracks; crust; diffusion; electron probe data; eucrite; experimental studies; feldspar group; fractures; framework silicates; high temperature; igneous rocks; incompatible elements; ion probe data; mass spectra; melting; metamorphism; meteorites; mineral composition; mobilization; NanoSIMS; partial melting; plagioclase; pyroxene group; silicates; spectra; stony meteorites; surface tension; temperature; thermal metamorphism; trace elements; transport; volcanic rocks DO - http://dx.doi.org/10.1016/j.epsl.2013.02.036 ER - TY - NEWS T1 - NASA Mission Will Track Earth's Ozone AN - 1325833166 JF - UPI Space Daily AU - Dr. Tony Phillips for NASA Science News Y1 - 2013/04/11/ PY - 2013 DA - 2013 Apr 11 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1325833166?accountid=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+Mission+Will+Track+Earth%27s+Ozone&rft.au=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2013-04-11&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 - 2013-04-11 ER - TY - NEWS T1 - Collision Course? A Comet Heads for Mars AN - 1325820427 JF - UPI Space Daily AU - Dr. Tony Phillips for NASA Science News Y1 - 2013/04/11/ PY - 2013 DA - 2013 Apr 11 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1325820427?accountid=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=Collision+Course%3F+A+Comet+Heads+for+Mars&rft.au=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2013-04-11&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 - 2013-04-11 ER - TY - NEWS T1 - NASA Books Reveal Wisdom Gained from Failure AN - 1324679265 JF - UPI Space Daily AU - Jim Banke for NASA Aeronautics Research Mission Directorate Y1 - 2013/04/09/ PY - 2013 DA - 2013 Apr 09 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1324679265?accountid=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+Books+Reveal+Wisdom+Gained+from+Failure&rft.au=Jim+Banke+for+NASA+Aeronautics+Research+Mission+Directorate&rft.aulast=Jim+Banke+for+NASA+Aeronautics+Research+Mission+Directorate&rft.aufirst=&rft.date=2013-04-09&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 - 2013-04-09 ER - TY - JOUR T1 - Ultra-high optical absorption efficiency from the ultraviolet to the infrared using multi-walled carbon nanotube ensembles. AN - 1324388582; 23233398 AB - The optical absorption efficiencies of vertically aligned multi-walled (MW)-carbon nanotube (CNT) ensembles are characterized in the 350-7000 nm wavelength range where CNT site densities > 1 × 10(11) /cm(2) are achieved directly on metallic substrates. The site density directly impacts the optical absorption characteristics, and while high-density arrays of CNTs on electrically insulating and non-metallic substrates have been commonly reported, achieving high site-densities on metals has been challenging and remains an area of active research. These absorber ensembles are ultra-thin (<10 μm) and yet they still exhibit a reflectance as low as ∼0.02%, which is 100 times lower than the reference; these characteristics make them potentially attractive for high-sensitivity and high-speed thermal detectors. In addition, the use of a plasma-enhanced chemical vapor deposition process for the synthesis of the absorbers increases the portfolio of materials that can be integrated with such absorbers due to the potential for reduced synthesis temperatures. The remarkable ruggedness of the absorbers is also demonstrated as they are exposed to high temperatures in an oxidizing ambient environment, making them well-suited for extreme thermal environments encountered in the field, potentially for solar cell applications. Finally, a phenomenological model enables the determinatiom of the extinction coefficients in these nanostructures and the results compare well with experiment. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. JF - Small (Weinheim an der Bergstrasse, Germany) AU - Kaul, Anupama B AU - Coles, James B AU - Eastwood, Michael AU - Green, Robert O AU - Bandaru, Prabhakar R AD - Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA. Anupama.B.Kaul@jpl.nasa.gov Y1 - 2013/04/08/ PY - 2013 DA - 2013 Apr 08 SP - 1058 EP - 1065 VL - 9 IS - 7 KW - Nanotubes, Carbon KW - 0 KW - Index Medicus KW - Ultraviolet Rays KW - Microscopy, Atomic Force KW - Models, Theoretical KW - Nanotubes, Carbon -- chemistry KW - Nanotubes, Carbon -- ultrastructure KW - Nanotechnology -- methods KW - Light UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1324388582?accountid=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=Small+%28Weinheim+an+der+Bergstrasse%2C+Germany%29&rft.atitle=Ultra-high+optical+absorption+efficiency+from+the+ultraviolet+to+the+infrared+using+multi-walled+carbon+nanotube+ensembles.&rft.au=Kaul%2C+Anupama+B%3BColes%2C+James+B%3BEastwood%2C+Michael%3BGreen%2C+Robert+O%3BBandaru%2C+Prabhakar+R&rft.aulast=Kaul&rft.aufirst=Anupama&rft.date=2013-04-08&rft.volume=9&rft.issue=7&rft.spage=1058&rft.isbn=&rft.btitle=&rft.title=Small+%28Weinheim+an+der+Bergstrasse%2C+Germany%29&rft.issn=1613-6829&rft_id=info:doi/10.1002%2Fsmll.201202232 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2013-09-30 N1 - Date created - 2013-04-04 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 DO - http://dx.doi.org/10.1002/smll.201202232 ER - TY - JOUR T1 - Carbon isotopic analyses of ca. 3.0 Ga microstructures imply planktonic autotrophs inhabited Earth's early oceans AN - 1351601453; 2013-041368 AB - The ca. 3 Ga Farrel Quartzite (FQ, Western Australia) contains possible organic microfossils of unusual spindle-like morphology that are surprisingly large and complex, preserved along with spheroids. The unusual nature of the possible fossils, coupled with their antiquity, makes their interpretation as biogenic difficult and debatable. Here, we report 32 in situ carbon isotopic analyses of 15 individual FQ specimens. The spheroids and the spindle-like forms have a weighted mean delta (super 13) C value of -37 per mil, an isotopic composition that is quite consistent with a biogenic origin. Both the spheroids and the spindle-like structures are isotopically distinct from the background organic matter in the same thin section (weighted mean delta (super 13) C value of -33 ppm), which shows that the preserved microstructures are not pseudofossils formed from physical reprocessing of the bulk sedimentary organic material. When considered along with published morphological and chemical studies, these results indicate that the FQ microstructures are bona fide microfossils, and support the interpretation that the spindles were planktonic. Our results also provide metabolic constraints that imply most of these preserved microorganisms were autotrophic. The existence of similar spindles in the ca. 3.4 Ga Strelley Pool Formation of Australia and the ca. 3.4 Ga Onverwacht Group of South Africa suggests that the spindle-containing microbiota may be one of the oldest, morphologically preserved examples of life. If this is the case, then the FQ structures represent the remains of a cosmopolitan biological experiment that appears to have lasted for several hundred million years, starting in the Paleoarchean. JF - Geology (Boulder) AU - House, C H AU - Oehler, D Z AU - Sugitani, K AU - Mimura, K Y1 - 2013/04/04/ PY - 2013 DA - 2013 Apr 04 SP - 651 EP - 654 PB - Geological Society of America (GSA), Boulder, CO VL - 41 IS - 6 SN - 0091-7613, 0091-7613 KW - Pilbara Craton KW - ion probe data KW - isotopes KW - Western Australia KW - microstructure KW - quartzites KW - paleo-oceanography KW - mass spectra KW - Strelley Pool Formation KW - Paleoarchean KW - thin sections KW - plankton KW - stable isotopes KW - carbon KW - metamorphic rocks KW - Australia KW - Archean KW - spectra KW - South Africa KW - geochemistry KW - Precambrian KW - Australasia KW - isotope ratios KW - Farrel Quartzite KW - C-13/C-12 KW - problematic fossils KW - Raman spectra KW - Onverwacht Group KW - Southern Africa KW - Africa KW - microfossils KW - Neoarchean KW - 08:General paleontology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1351601453?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geology+%28Boulder%29&rft.atitle=Carbon+isotopic+analyses+of+ca.+3.0+Ga+microstructures+imply+planktonic+autotrophs+inhabited+Earth%27s+early+oceans&rft.au=House%2C+C+H%3BOehler%2C+D+Z%3BSugitani%2C+K%3BMimura%2C+K&rft.aulast=House&rft.aufirst=C&rft.date=2013-04-04&rft.volume=41&rft.issue=6&rft.spage=651&rft.isbn=&rft.btitle=&rft.title=Geology+%28Boulder%29&rft.issn=00917613&rft_id=info:doi/10.1130%2FG34055.1 L2 - http://www.gsajournals.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States | Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2013-01-01 N1 - Number of references - 33 N1 - PubXState - CO N1 - Document feature - illus. N1 - SuppNotes - GSA Data Repository item 2013177 N1 - Last updated - 2013-06-13 N1 - CODEN - GLGYBA N1 - SubjectsTermNotLitGenreText - Africa; Archean; Australasia; Australia; C-13/C-12; carbon; Farrel Quartzite; geochemistry; ion probe data; isotope ratios; isotopes; mass spectra; metamorphic rocks; microfossils; microstructure; Neoarchean; Onverwacht Group; paleo-oceanography; Paleoarchean; Pilbara Craton; plankton; Precambrian; problematic fossils; quartzites; Raman spectra; South Africa; Southern Africa; spectra; stable isotopes; Strelley Pool Formation; thin sections; Western Australia DO - http://dx.doi.org/10.1130/G34055.1 ER - TY - JOUR T1 - The radial distribution of water ice and chromophores across Saturn's system AN - 1660632029; 2015-018380 AB - Over the past eight years, the Visual and Infrared Mapping Spectrometer (VIMS) on board the Cassini orbiter has returned hyperspectral images in the 0.35-5.1 mu m range of the icy satellites and rings of Saturn. These very different objects show significant variations in surface composition, roughness, and regolith grain size as a result of their evolutionary histories, endogenic processes, and interactions with exogenic particles. The distributions of surface water ice and chromophores, i.e., organic and non-icy materials, across the Saturnian system, are traced using specific spectral indicators (spectral slopes and absorption band depths) obtained from rings mosaics and disk-integrated satellites observations by VIMS. Moving from the inner C ring to Iapetus, we found a marking uniformity in the distribution of abundance of water ice. On the other hand, the distribution of chromophores is much more concentrated in the rings particles and on the outermost satellites (Rhea, Hyperion, and Iapetus). A reduction of red material is observed on the satellites' surfaces orbiting within the E ring environment likely due to fine particles from Enceladus' plumes. Once the exogenous dark material covering the Iapetus' leading hemisphere is removed, the texture of the water ice-rich surfaces, inferred through the 2 mu m band depth, appears remarkably uniform across the entire system. Copyright (Copyright) 2013. The American Astronomical Society. All rights reserved. JF - The Astrophysical Journal AU - Filacchione, Gianrico AU - Capaccioni, F AU - Clark, R N AU - Nicholson, P D AU - Cruikshank, D P AU - Cuzzi, J N AU - Lunine, J I AU - Brown, R H AU - Cerroni, P AU - Tosi, F AU - Ciarniello, M AU - Buratti, B J AU - Hedman, M M AU - Flamini, E Y1 - 2013/04/01/ PY - 2013 DA - 2013 Apr 01 EP - Paper no. 76 PB - IOP Publishing for American Astronomical Society, Bristol VL - 766 IS - 2 SN - 0004-637X, 0004-637X KW - water KW - icy satellites KW - hyperspectral analysis KW - grain size KW - Hyperion Satellite KW - Visual and Infrared Mapping Spectrometer KW - Rhea Satellite KW - distribution KW - Iapetus Satellite KW - giant planets KW - Saturn KW - planets KW - planetary rings KW - Cassini-Huygens Mission KW - chromophores KW - ice KW - outer planets KW - Enceladus Satellite KW - satellites KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660632029?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+Astrophysical+Journal&rft.atitle=The+radial+distribution+of+water+ice+and+chromophores+across+Saturn%27s+system&rft.au=Filacchione%2C+Gianrico%3BCapaccioni%2C+F%3BClark%2C+R+N%3BNicholson%2C+P+D%3BCruikshank%2C+D+P%3BCuzzi%2C+J+N%3BLunine%2C+J+I%3BBrown%2C+R+H%3BCerroni%2C+P%3BTosi%2C+F%3BCiarniello%2C+M%3BBuratti%2C+B+J%3BHedman%2C+M+M%3BFlamini%2C+E&rft.aulast=Filacchione&rft.aufirst=Gianrico&rft.date=2013-04-01&rft.volume=766&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%2F766%2F2%2F76 L2 - http://iopscience.iop.org/0004-637X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by IOP Publishing Ltd., London, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 30 N1 - Document feature - illus. N1 - Last updated - 2015-03-05 N1 - SubjectsTermNotLitGenreText - Cassini-Huygens Mission; chromophores; distribution; Enceladus Satellite; giant planets; grain size; Hyperion Satellite; hyperspectral analysis; Iapetus Satellite; ice; icy satellites; outer planets; planetary rings; planets; regolith; Rhea Satellite; satellites; Saturn; Visual and Infrared Mapping Spectrometer; water DO - http://dx.doi.org/10.1088/0004-637X/766/2/76 ER - TY - JOUR T1 - First observations of foreshock bubbles upstream of Earth's bow shock; characteristics and comparisons to HFAs AN - 1656035767; 2014-025174 AB - Using multipoint in situ observations upstream of Earth's bow shock from the THEMIS mission, we present the first observations of foreshock bubbles (FBs) and compare them to observations of hot flow anomalies (HFAs). FBs are recently conceptualized kinetic phenomena that can form under the commonplace condition of a rotational discontinuity in the interplanetary magnetic field interacting with backstreaming energetic ions in Earth's quasi-parallel foreshock. FBs may have remained elusive until now due to their many observational similarities to HFAs and the lack of coordinated multipoint measurements. Here we introduce identification criteria for distinguishing between HFAs and FBs using in situ observations, and use them to analyze five example events that occurred on Bastille Day (14 July) and 11-12 August 2008. Three of these events satisfy the criteria for FBs and are inconsistent with multiple criteria for HFAs. The remaining two events are consistent with the traditional picture of HFAs. Furthermore, FBs involve two converging shocks, and using these events, we demonstrate their effectiveness at particle acceleration. Considering that their formation conditions are not extraordinary, FBs may be ubiquitous at collisionless, quasi-parallel shocks in a variety of astrophysical settings. Abstract Copyright (2013), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Space Physics AU - Turner, D L AU - Omidi, N AU - Sibeck, D G AU - Angelopoulos, V Y1 - 2013/04// PY - 2013 DA - April 2013 SP - 1552 EP - 1570 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 4 SN - 2169-9380, 2169-9380 KW - shock waves KW - density KW - three-dimensional models KW - solar wind KW - anomalies KW - kinetics KW - ions KW - magnetic field KW - temperature KW - geometry KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656035767?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+Space+Physics&rft.atitle=First+observations+of+foreshock+bubbles+upstream+of+Earth%27s+bow+shock%3B+characteristics+and+comparisons+to+HFAs&rft.au=Turner%2C+D+L%3BOmidi%2C+N%3BSibeck%2C+D+G%3BAngelopoulos%2C+V&rft.aulast=Turner&rft.aufirst=D&rft.date=2013-04-01&rft.volume=118&rft.issue=4&rft.spage=1552&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Space+Physics&rft.issn=21699380&rft_id=info:doi/10.1002%2Fjgra.50198 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9402 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 - 2014-01-01 N1 - Number of references - 34 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2015-02-19 N1 - CODEN - JGREA2 N1 - SubjectsTermNotLitGenreText - anomalies; density; geometry; ions; kinetics; magnetic field; shock waves; solar wind; temperature; three-dimensional models DO - http://dx.doi.org/10.1002/jgra.50198 ER - TY - JOUR T1 - The Icebraker Life Mission to Mars; a search for biomolecular evidence for life AN - 1524612739; 2014-031511 JF - Astrobiology AU - McKay, Christopher P AU - Stoker, Carol R AU - Glass, Brian J AU - Dave, Arwen I AU - Davila, Alfonso F AU - Heldmann, Jennifer L AU - Marinova, Margarita M AU - Fairen, Alberto G AU - Quinn, Richard C AU - Zacny, Kris A AU - Paulsen, Gale AU - Smith, Peter H AU - Parro, Victor AU - Andersen, Dale T AU - Hecht, Michael H AU - Lacelle, Denis AU - Pollard, Wayne H Y1 - 2013/04// PY - 2013 DA - April 2013 SP - 334 EP - 353 PB - Mary Ann Liebert, Larchmont, NY VL - 13 IS - 4 SN - 1531-1074, 1531-1074 KW - water KW - soils KW - polar regions KW - obliquity of the ecliptic KW - in situ KW - sample return KW - astrobiology KW - Mars KW - biomarkers KW - perchlorate KW - terrestrial planets KW - planets KW - organic compounds KW - organic acids KW - detection KW - habitability KW - sampling KW - ice KW - amino acids KW - Phoenix Mission KW - Icebreaker Life Mission KW - ground ice KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1524612739?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Astrobiology&rft.atitle=The+Icebraker+Life+Mission+to+Mars%3B+a+search+for+biomolecular+evidence+for+life&rft.au=McKay%2C+Christopher+P%3BStoker%2C+Carol+R%3BGlass%2C+Brian+J%3BDave%2C+Arwen+I%3BDavila%2C+Alfonso+F%3BHeldmann%2C+Jennifer+L%3BMarinova%2C+Margarita+M%3BFairen%2C+Alberto+G%3BQuinn%2C+Richard+C%3BZacny%2C+Kris+A%3BPaulsen%2C+Gale%3BSmith%2C+Peter+H%3BParro%2C+Victor%3BAndersen%2C+Dale+T%3BHecht%2C+Michael+H%3BLacelle%2C+Denis%3BPollard%2C+Wayne+H&rft.aulast=McKay&rft.aufirst=Christopher&rft.date=2013-04-01&rft.volume=13&rft.issue=4&rft.spage=334&rft.isbn=&rft.btitle=&rft.title=Astrobiology&rft.issn=15311074&rft_id=info:doi/10.1089%2Fast.2012.0878 L2 - http://www.liebertpub.com/publication.aspx?pub_id=99 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 121 N1 - PubXState - NY N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2014-05-15 N1 - SubjectsTermNotLitGenreText - amino acids; astrobiology; biomarkers; detection; ground ice; habitability; ice; Icebreaker Life Mission; in situ; instruments; Mars; obliquity of the ecliptic; organic acids; organic compounds; perchlorate; Phoenix Mission; planets; polar regions; sample return; sampling; soils; terrestrial planets; water DO - http://dx.doi.org/10.1089/ast.2012.0878 ER - TY - JOUR T1 - The sample handling system for the Mars Icebreaker Life Mission; from dirt to data AN - 1524612078; 2014-031512 JF - Astrobiology AU - Dave, Arwen AU - Thompson, Sarah J AU - McKay, Christopher P AU - Stoker, Carol R AU - Zacny, Kris A AU - Paulsen, Gale AU - Mellerowicz, Bolek AU - Glass, Brian J AU - Willson, David AU - Bonaccorsi, Rosalba AU - Rask, Jon Y1 - 2013/04// PY - 2013 DA - April 2013 SP - 354 EP - 369 PB - Mary Ann Liebert, Larchmont, NY VL - 13 IS - 4 SN - 1531-1074, 1531-1074 KW - soils KW - grain size KW - astrobiology KW - Mars KW - cuttings KW - concepts KW - samples KW - terrestrial planets KW - planets KW - detection KW - sampling KW - ice KW - Icebreaker Life Mission KW - ground ice KW - drilling KW - preservation KW - instruments KW - design KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1524612078?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Astrobiology&rft.atitle=The+sample+handling+system+for+the+Mars+Icebreaker+Life+Mission%3B+from+dirt+to+data&rft.au=Dave%2C+Arwen%3BThompson%2C+Sarah+J%3BMcKay%2C+Christopher+P%3BStoker%2C+Carol+R%3BZacny%2C+Kris+A%3BPaulsen%2C+Gale%3BMellerowicz%2C+Bolek%3BGlass%2C+Brian+J%3BWillson%2C+David%3BBonaccorsi%2C+Rosalba%3BRask%2C+Jon&rft.aulast=Dave&rft.aufirst=Arwen&rft.date=2013-04-01&rft.volume=13&rft.issue=4&rft.spage=354&rft.isbn=&rft.btitle=&rft.title=Astrobiology&rft.issn=15311074&rft_id=info:doi/10.1089%2Fast.2012.0911 L2 - http://www.liebertpub.com/publication.aspx?pub_id=99 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 27 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2014-05-15 N1 - SubjectsTermNotLitGenreText - astrobiology; concepts; cuttings; design; detection; drilling; grain size; ground ice; ice; Icebreaker Life Mission; instruments; Mars; planets; preservation; samples; sampling; soils; terrestrial planets DO - http://dx.doi.org/10.1089/ast.2012.0911 ER - TY - JOUR T1 - NASA Satellites Find Freshwater Losses in Middle East AN - 1506351401; 18439840 AB - A new study, using data from a pair of gravity-measuring NASA satellites, finds that large parts of the arid Middle East region lost freshwater reserves rapidly during the past decade. JF - Earth Observer AU - Buis, A AU - Cole, S AU - Wilson, J AD - NASA/Jet Propulsion Laboratory, alan.buis@jpl.nasa.gov Y1 - 2013/04// PY - 2013 DA - April 2013 SP - 48 EP - 49 PB - EOS Project Science Office, NASA Goddard Space Flight Center Greenbelt MD 20771 USA VL - 25 IS - 2 KW - Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Remote Sensing KW - Satellite Technology KW - Satellite sensing KW - Potential resources KW - Remote sensing KW - Inland water environment KW - Middle East KW - AQ 00001:Water Resources and Supplies KW - SW 5010:Network design KW - Q2 09282:Materials technology, corrosion, fouling and boring UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1506351401?accountid=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=Earth+Observer&rft.atitle=NASA+Satellites+Find+Freshwater+Losses+in+Middle+East&rft.au=Buis%2C+A%3BCole%2C+S%3BWilson%2C+J&rft.aulast=Buis&rft.aufirst=A&rft.date=2013-04-01&rft.volume=25&rft.issue=2&rft.spage=48&rft.isbn=&rft.btitle=&rft.title=Earth+Observer&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-04-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Satellite sensing; Potential resources; Remote sensing; Inland water environment; Remote Sensing; Satellite Technology; Middle East ER - TY - JOUR T1 - LRO observations of morphology and surface roughness of volcanic cones and lobate lava flows in the Marius Hills AN - 1469627967; 2013-097883 AB - The volcanic domes, cones, sinuous rilles, and pyroclastic deposits of the Marius Hills region of the Moon ( approximately 13.4 degrees N, 304.6 degrees E) represent a significant episode of magmatic activity at or near the lunar surface that is still poorly understood. Comparisons between LROC NAC block populations, Mini-RF data, and Diviner-derived rock abundances confirm that blocky lava flows comprise the domes of the Marius Hills. 8 mu m features measured by Diviner indicate that the domes are not rich in silica and are not significantly different than surrounding mare materials. LROC observations indicate that some of the dome-building lava flows originated directly from volcanic cones. Many of the cones are C-shaped, while others are irregularly shaped, and local topography and lava eruptions affect cone shape. In general, the cones are morphologically similar to terrestrial cinder and lava cones and are composed of varying amounts of cinder, spatter, and lava. Many of the cones are found in local groupings or alignments. The wide range of volcanic features, from broad low domes to steep cones, represents a range of variable eruption conditions. Complex morphologies and variable layering show that eruption conditions were variable over the plateau. Abstract Copyright (2013), American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Lawrence, Samuel J AU - Stopar, Julie D AU - Hawke, B Ray AU - Greenhagen, Benjamin T AU - Cahill, Joshua T S AU - Bandfield, Joshua L AU - Jolliff, Bradley L AU - Denevi, Brett W AU - Robinson, Mark S AU - Glotch, Timothy D AU - Bussey, D Benjamin J AU - Spudis, Paul D AU - Giguere, Thomas A AU - Garry, W Brent Y1 - 2013/04// PY - 2013 DA - April 2013 SP - 615 EP - 634 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 4 SN - 2169-9097, 2169-9097 KW - Diviner Instrument KW - lava flows KW - Moon KW - Lunar Reconnaissance Orbiter KW - roughness KW - cinder cones KW - observations KW - morphology KW - lava domes KW - volcanic features KW - volcanism KW - eruptions KW - Marius Hills KW - volcanoes KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1469627967?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=LRO+observations+of+morphology+and+surface+roughness+of+volcanic+cones+and+lobate+lava+flows+in+the+Marius+Hills&rft.au=Lawrence%2C+Samuel+J%3BStopar%2C+Julie+D%3BHawke%2C+B+Ray%3BGreenhagen%2C+Benjamin+T%3BCahill%2C+Joshua+T+S%3BBandfield%2C+Joshua+L%3BJolliff%2C+Bradley+L%3BDenevi%2C+Brett+W%3BRobinson%2C+Mark+S%3BGlotch%2C+Timothy+D%3BBussey%2C+D+Benjamin+J%3BSpudis%2C+Paul+D%3BGiguere%2C+Thomas+A%3BGarry%2C+W+Brent&rft.aulast=Lawrence&rft.aufirst=Samuel&rft.date=2013-04-01&rft.volume=118&rft.issue=4&rft.spage=615&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2Fjgre.20060 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 - 2013-01-01 N1 - Number of references - 90 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - cinder cones; Diviner Instrument; eruptions; lava domes; lava flows; Lunar Reconnaissance Orbiter; Marius Hills; Moon; morphology; observations; roughness; volcanic features; volcanism; volcanoes DO - http://dx.doi.org/10.1002/jgre.20060 ER - TY - JOUR T1 - Coordinated spectral and XRD analyses of magnesite-nontronite-forsterite mixtures and implications for carbonates on Mars AN - 1469627964; 2013-097884 AB - Mineral detection on Mars largely relies on laboratory data of minerals and mineral mixtures. The objective of this study is to provide reflectance spectra in the visible/near-infrared (VNIR) and mid-IR regions, X-ray diffraction (XRD) data and Moessbauer spectra of a suite of carbonate, phyllosilicate and olivine mixtures in order to facilitate identification and characterization of these minerals on Mars. Remote sensing observations indicate that combinations of these minerals are present in ancient rocks on Mars around the Isidis Basin and in Gusev crater. Magnesite, nontronite, and forsterite size fractions <125 mu m were selected for this study. Results of the VNIR reflectance analyses illustrate the complexity of VNIR spectra of mixtures. Analyses of the NIR band depths near 2.3, 2.5, 3.4, and 4 mu m showed clear trends with carbonate abundance, although the data are not linear. Mixtures of magnesite and nontronite exhibited a band near 2.3 mu m much closer to that observed for nontronite than that for magnesite. VNIR analyses of the mixtures indicated that a small amount of forsterite in any of the mixtures contributed a large increase in the broad approximately 1 mu m band and, hence, the red slope characteristic of Fe (super 2+) -bearing minerals. Mid-IR mixture spectra were dominated by magnesite and forsterite, and nontronite was much more difficult to detect by mid-IR spectra in the mixtures. This could be related to why phyllosilicates are detected in many locations on Mars using data collected by the Compact Reconnaissance Imaging Spectrometer for Mars, but not detected using data collected by the Thermal Emission Spectrometer. Moessbauer spectroscopy is well suited for analyses of Fe (super 2+) - and Fe (super 3+) -bearing minerals, and modeling of the peak areas gave well-correlated trends for nontronite and forsterite abundances where abundant Fe was present. XRD full-pattern fitting analyses were performed on the magnesite-forsterite series, giving results within 6 wt % of the actual values, with a mean difference between actual and calculated values of 2.4 wt %. This study provides important laboratory data for characterizing the spectral and XRD properties of mineral mixtures that will facilitate mineral identification on Mars. Carbonates, in particular, have been primarily observed at low abundances and in small outcrops, and they are frequently found mixed with other minerals. Through analyses of mineral mixtures using multiple data sets, this study seeks to provide ground truthing that will enable better coordination of carbonate detections in the dust and rocks of Mars. Abstract Copyright (2013), American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Bishop, Janice L AU - Perry, Kaysea A AU - Darby Dyar, M AU - Bristow, Thomas F AU - Blake, David F AU - Brown, Adrian J AU - Peel, Samantha E Y1 - 2013/04// PY - 2013 DA - April 2013 SP - 635 EP - 650 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 4 SN - 2169-9097, 2169-9097 KW - silicates KW - near-infrared spectra KW - X-ray diffraction data KW - olivine group KW - Mars KW - iron KW - ferric iron KW - orthosilicates KW - spectra KW - Gusev Crater KW - Mossbauer spectra KW - THEMIS KW - magnesite KW - nontronite KW - forsterite KW - ferrous iron KW - clay minerals KW - terrestrial planets KW - nesosilicates KW - planets KW - metals KW - sheet silicates KW - spectroscopy KW - reflectance KW - carbonates KW - minerals KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1469627964?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Coordinated+spectral+and+XRD+analyses+of+magnesite-nontronite-forsterite+mixtures+and+implications+for+carbonates+on+Mars&rft.au=Bishop%2C+Janice+L%3BPerry%2C+Kaysea+A%3BDarby+Dyar%2C+M%3BBristow%2C+Thomas+F%3BBlake%2C+David+F%3BBrown%2C+Adrian+J%3BPeel%2C+Samantha+E&rft.aulast=Bishop&rft.aufirst=Janice&rft.date=2013-04-01&rft.volume=118&rft.issue=4&rft.spage=635&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2Fjgre.20066 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 - 2013-01-01 N1 - Number of references - 124 N1 - PubXState - DC N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - carbonates; clay minerals; ferric iron; ferrous iron; forsterite; Gusev Crater; iron; magnesite; Mars; metals; minerals; Mossbauer spectra; near-infrared spectra; nesosilicates; nontronite; olivine group; orthosilicates; planets; reflectance; sheet silicates; silicates; spectra; spectroscopy; terrestrial planets; THEMIS; X-ray diffraction data DO - http://dx.doi.org/10.1002/jgre.20066 ER - TY - JOUR T1 - A new methodology for rain identification from passive microwave data in the Tropics using neural networks AN - 1434018140; 18499991 AB - The detection of rainfall remains a challenge for the monitoring of precipitation from space. A methodology is presented to identify rain events from spaceborne passive microwave data using neural networks. We focus on BRAIN, the algorithm that provides instantaneous quantitative precipitation estimates at the surface, based on the MADRAS radiometer onboard the Megha-Tropiques satellite. A version of BRAIN using data from the Tropical Rainfall Measuring Mission (TRMM) Microwave Imager (TMI) has been used to compare several multilayer perceptrons (MLP) trained on different combinations of TMI brightness temperatures with the conventional GSCAT-2 algorithm approach used for rainfall detection. These classifiers were compared at a global scale to reference values from the TRMM Precipitation Radar (PR). They were also compared to ground measurements using two 1 degree 1 degree dense rain-gauge networks from different climatic zones in West Africa to assess the influence of rainfall types. At the global scale the MLPs provide better Probability of Detection than the GSCAT-2 decision tree but tend to have a higher False Alarm Rate. While no unique solution exists given the strong regional dependence of the classifiers' performances, the screen based on the 19, 21 and 85 GHz channels provides the best detection results at the instantaneous scales. As to accumulated rainfall, the screen that exhibits the lower bias relative to the PR makes use of the 37 and 85 GHz channels. The evaluation over West Africa using 10 years of TRMM overpasses shows that MLPs are in better agreement with both the PR and the gauges than GSCAT-2. The MLP trained on the 37 and 85 GHz channels increases the Probability of Detection by nearly 35% compared to the former screening over the two studied regions. Better results are obtained in the case of organized systems. Copyright [copy 2013 Royal Meteorological Society JF - Quarterly Journal of the Royal Meteorological Society AU - Kacimi, Sahra AU - Viltard, Nicolas AU - Kirstetter, Pierre-Emmanuel AD - Universite Versailles, Saint Quentin en Yvelines, CNRS/INSU, LATMOS-IPSL, Guyancourt, France., sahra.kacimi@jpl.nasa.gov Y1 - 2013/04// PY - 2013 DA - Apr 2013 SP - 912 EP - 922 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 139 IS - 673 SN - 0035-9009, 0035-9009 KW - Water Resources Abstracts; Aqualine Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - passive microwave KW - neural networks KW - Probability of Detection KW - bias KW - Bayesian inversion KW - rainfall estimation KW - Rainfall KW - Algorithms KW - Rain-gauge networks KW - Surface radiation temperature KW - Radiometers KW - Neural Networks KW - Microwaves KW - Screening KW - Mathematical models KW - Neural networks KW - Brain KW - Precipitation KW - Satellite instrumentation KW - Climatic zones KW - Methodology KW - Channels KW - Screens KW - Africa KW - Tropical Rainfall Measuring Mission (TRMM) KW - Brightness temperature KW - Rain KW - Monitoring KW - Royal Meteorological Society KW - Q2 09243:Structure, mechanics and thermodynamics KW - SW 5080:Evaluation, processing and publication KW - AQ 00006:Sewage KW - Q5 08502:Methods and instruments KW - M2 551.578.1:Liquid (551.578.1) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1434018140?accountid=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=Quarterly+Journal+of+the+Royal+Meteorological+Society&rft.atitle=A+new+methodology+for+rain+identification+from+passive+microwave+data+in+the+Tropics+using+neural+networks&rft.au=Kacimi%2C+Sahra%3BViltard%2C+Nicolas%3BKirstetter%2C+Pierre-Emmanuel&rft.aulast=Kacimi&rft.aufirst=Sahra&rft.date=2013-04-01&rft.volume=139&rft.issue=673&rft.spage=912&rft.isbn=&rft.btitle=&rft.title=Quarterly+Journal+of+the+Royal+Meteorological+Society&rft.issn=00359009&rft_id=info:doi/10.1002%2Fqj.2114 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-09-01 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Radiometers; Screening; Mathematical models; Microwaves; Brain; Climatic zones; Surface radiation temperature; Methodology; Neural networks; Algorithms; Tropical Rainfall Measuring Mission (TRMM); Brightness temperature; Precipitation; Satellite instrumentation; Rain-gauge networks; Royal Meteorological Society; Channels; Screens; Neural Networks; Rainfall; Rain; Monitoring; Africa DO - http://dx.doi.org/10.1002/qj.2114 ER - TY - JOUR T1 - Ground water and climate change AN - 1429840062; 2013-069120 JF - Nature Climate Change AU - Taylor, Richard G AU - Scanlon, Bridget AU - Doell, Petra AU - Rodell, Matt AU - van Beek, Rens AU - Wada, Yoshihide AU - Longuevergne, Laurent AU - Leblanc, Marc AU - Famiglietti, James S AU - Edmunds, Mike AU - Konikow, Leonard AU - Green, Timothy R AU - Chen, Jianyao AU - Taniguchi, Makoto AU - Bierkens, Marc F P AU - MacDonald, Alan M AU - Fan, Ying AU - Maxwell, Reed M AU - Yechieli, Yossi AU - Gurdak, Jason J AU - Allen, Diana M AU - Shamsudduha, Mohammad AU - Hiscock, Kevin AU - Yeh, Pat J F AU - Holman, Ian AU - Treidel, Holger Y1 - 2013/04// PY - 2013 DA - April 2013 SP - 322 EP - 329 PB - Macmillan Publishers, Nature Publishing Group, London VL - 3 IS - 4 SN - 1758-678X, 1758-678X KW - isotopes KW - moisture KW - atmospheric precipitation KW - drinking water KW - stable isotopes KW - climate change KW - irrigation KW - ground water KW - drought KW - feedback KW - hydrologic cycle KW - floods KW - climate forcing KW - depletion KW - soils KW - hydrology KW - monitoring KW - paleohydrology KW - human activity KW - global KW - agriculture KW - aquifers KW - models KW - sea-level changes KW - recharge KW - fossil waters KW - water resources KW - 21:Hydrogeology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1429840062?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+Climate+Change&rft.atitle=Ground+water+and+climate+change&rft.au=Taylor%2C+Richard+G%3BScanlon%2C+Bridget%3BDoell%2C+Petra%3BRodell%2C+Matt%3Bvan+Beek%2C+Rens%3BWada%2C+Yoshihide%3BLonguevergne%2C+Laurent%3BLeblanc%2C+Marc%3BFamiglietti%2C+James+S%3BEdmunds%2C+Mike%3BKonikow%2C+Leonard%3BGreen%2C+Timothy+R%3BChen%2C+Jianyao%3BTaniguchi%2C+Makoto%3BBierkens%2C+Marc+F+P%3BMacDonald%2C+Alan+M%3BFan%2C+Ying%3BMaxwell%2C+Reed+M%3BYechieli%2C+Yossi%3BGurdak%2C+Jason+J%3BAllen%2C+Diana+M%3BShamsudduha%2C+Mohammad%3BHiscock%2C+Kevin%3BYeh%2C+Pat+J+F%3BHolman%2C+Ian%3BTreidel%2C+Holger&rft.aulast=Taylor&rft.aufirst=Richard&rft.date=2013-04-01&rft.volume=3&rft.issue=4&rft.spage=322&rft.isbn=&rft.btitle=&rft.title=Nature+Climate+Change&rft.issn=1758678X&rft_id=info:doi/10.1038%2FNCLIMATE1744 L2 - http://www.nature.com/nclimate/current_issue.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 100 N1 - Document feature - illus. incl. sketch maps, 1 table, block diag. N1 - Last updated - 2013-09-05 N1 - SubjectsTermNotLitGenreText - agriculture; aquifers; atmospheric precipitation; climate change; climate forcing; depletion; drinking water; drought; feedback; floods; fossil waters; global; ground water; human activity; hydrologic cycle; hydrology; irrigation; isotopes; models; moisture; monitoring; paleohydrology; recharge; sea-level changes; soils; stable isotopes; water resources DO - http://dx.doi.org/10.1038/NCLIMATE1744 ER - TY - JOUR T1 - An automated mineral classifier using Raman spectra AN - 1400619481; 2013-053739 AB - We present a robust and autonomous mineral classifier for analyzing igneous rocks. Our study shows that machine learning methods, specifically artificial neural networks, can be trained using spectral data acquired by in situ Raman spectroscopy in order to accurately distinguish among key minerals for characterizing the composition of igneous rocks. These minerals include olivine, quartz, plagioclase, potassium feldspar, mica, and several pyroxenes. On average, our classifier performed with 83 percent accuracy. Quartz and olivine, as well as the pyroxenes, were classified with 100 percent accuracy. In addition to using traditional features such as the location of spectral bands and their shapes, our automated mineral classifier was able to incorporate fluorescence patterns, which are not as easily perceived by humans, into its classification scheme. The latter was able to improve the classification accuracy and is an example of the robustness of our classifier. Abstract Copyright (2013) Elsevier, B.V. JF - Computers & Geosciences AU - Ishikawa, Sascha T AU - Gulick, Virginia C Y1 - 2013/04// PY - 2013 DA - April 2013 SP - 259 EP - 268 PB - Elsevier, Amsterdam VL - 54 SN - 0098-3004, 0098-3004 KW - artificial intelligence KW - Raman spectra KW - mineral composition KW - igneous rocks KW - classification KW - data processing KW - data bases KW - optimization KW - spectra KW - neural networks KW - accuracy KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1400619481?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Computers+%26+Geosciences&rft.atitle=An+automated+mineral+classifier+using+Raman+spectra&rft.au=Ishikawa%2C+Sascha+T%3BGulick%2C+Virginia+C&rft.aulast=Ishikawa&rft.aufirst=Sascha&rft.date=2013-04-01&rft.volume=54&rft.issue=&rft.spage=259&rft.isbn=&rft.btitle=&rft.title=Computers+%26+Geosciences&rft.issn=00983004&rft_id=info:doi/10.1016%2Fj.cageo.2013.01.011 L2 - http://www.sciencedirect.com/science?_ob=JournalURL&_cdi=5840&_auth=y&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=e5198452fad934c6346f38b57511c8e0 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2013-01-01 N1 - Number of references - 34 N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2013-07-18 N1 - CODEN - GGEOD5 N1 - SubjectsTermNotLitGenreText - accuracy; artificial intelligence; classification; data bases; data processing; igneous rocks; mineral composition; neural networks; optimization; Raman spectra; spectra DO - http://dx.doi.org/10.1016/j.cageo.2013.01.011 ER - TY - JOUR T1 - The reduction of structural iron in ferruginous smectite via the amino acid cysteine; implications for an electron shuttling compound AN - 1400617198; 2013-053521 AB - Microbes can reduce the structural iron (Fe(III) (sub str) ) in clay minerals thus providing a potentially important terminal electron acceptor in the oxidation of organic matter. Many of these microorganisms participate in dissimilatory metal reduction with Fe(III) serving as the terminal electron acceptor either through direct contact with mineral surfaces or by way of electron shuttling compounds. Here we provide evidence for the electron shuttling capability of the amino acid cysteine with a ferruginous dioctahedral smectite (SWa-1) using infrared spectroscopy, X-ray diffraction and quantitative assay of ferric and ferrous iron. Reactions to determine the electron exchange between cysteine and SWa-1 were performed in pH 8 adjusted oxygen free solutions. Fourier transform infrared spectroscopy (FTIR) performed on self-supporting clay films reveals that cysteine has the ability to reduce Fe(III) (sub str) , as shown by the decrease in the intensity of the AlFeOH and FeFeOH deformation and stretching bands resulting from decreased hydroxyl vibrations in the octahedral sheets. X-ray diffraction of the c-oriented SWa-1 reveals that cysteine intercalated into the d00l interlayer spaces. Quantitative iron assay indicates that the SWa-1 retains its structural iron upon reduction by cysteine and reoxidation. The increased interlayer spacing due to the intercalation of cysteine implies that this electron exchange is occurring from the basal surfaces of the smectite, as opposed to edge sites. When the SWa-1 was rinsed in dialysis tubing, the AlFeOH and FeFeOH vibrations reappear in FTIR spectra and the XRD patterns reveal that the cysteine no longer occupies interlayer sites. These results are consistent with partially reversible changes in clay mineral structure resulting from the reduction of Fe(III) (sub str) . They support the hypothesis that cysteine could serve as an electron shuttling compound used by microorganisms to gain access to structural iron in clay minerals and extends the range of microbially mediated Fe redox reactions from iron oxides and oxyhydroxides to the largest pool of Fe in aquatic sediments, Fe-bearing clay minerals. Abstract Copyright (2013) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Morrison, Keith D AU - Bristow, Thomas F AU - Kennedy, Martin J Y1 - 2013/04/01/ PY - 2013 DA - 2013 Apr 01 SP - 152 EP - 163 PB - Elsevier, New York, NY VL - 106 SN - 0016-7037, 0016-7037 KW - silicates KW - X-ray diffraction data KW - biochemistry KW - oxidation KW - smectite KW - crystal structure KW - cysteine KW - ferruginous composition KW - infrared spectra KW - clay minerals KW - FTIR spectra KW - organic compounds KW - organic acids KW - biogenic processes KW - chemical reactions KW - amino acids KW - sediments KW - sheet silicates KW - spectra KW - reduction KW - microorganisms KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1400617198?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=The+reduction+of+structural+iron+in+ferruginous+smectite+via+the+amino+acid+cysteine%3B+implications+for+an+electron+shuttling+compound&rft.au=Morrison%2C+Keith+D%3BBristow%2C+Thomas+F%3BKennedy%2C+Martin+J&rft.aulast=Morrison&rft.aufirst=Keith&rft.date=2013-04-01&rft.volume=106&rft.issue=&rft.spage=152&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2012.12.006 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2013-01-01 N1 - Number of references - 87 N1 - PubXState - NY N1 - Document feature - illus. incl. 4 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2013-07-18 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - amino acids; biochemistry; biogenic processes; chemical reactions; clay minerals; crystal structure; cysteine; ferruginous composition; FTIR spectra; infrared spectra; microorganisms; organic acids; organic compounds; oxidation; reduction; sediments; sheet silicates; silicates; smectite; spectra; X-ray diffraction data DO - http://dx.doi.org/10.1016/j.gca.2012.12.006 ER - TY - JOUR T1 - Bioleaching of ilmenite and basalt in the presence of iron-oxidizing and iron-scavenging bacteria AN - 1399915426; 18144569 AB - Bioleaching has been suggested as an alternative to traditional mining techniques in extraterrestrial environments because it does not require extensive infrastructure and bulky hardware. In situ bioleaching of silicate minerals, such as those found on the moon or Mars, has been proposed as a feasible alternative to traditional extraction techniques that require either extreme heat and/or substantial chemical treatment. In this study, we investigated the biotic and abiotic leaching of basaltic rocks (analogues to those found on the moon and Mars) and the mineral ilmenite (FeTiO sub(3)) in aqueous environments under acidic (pH ~ 2.5) and circumneutral pH conditions. The biological leaching experiments were conducted using Acidithiobacillus ferrooxidans, an iron (Fe)-oxidizing bacteria, and Pseudomonas mendocina, an Fe-scavenging bacteria. We found that both strains were able to grow using the Fe(II) derived from the tested basaltic rocks and ilmenite. Although silica leaching rates were the same or slightly less in the bacterial systems with A. ferrooxidans than in the abiotic control systems, the extent of Fe, Al and Ti released (and re-precipitated in new solid phases) was actually greater in the biotic systems. This is likely because the Fe(II) leached from the basalt was immediately oxidized by A. ferrooxidans, and precipitated into Fe(III) phases which causes a change in the equilibrium of the system, i.e. Le Chatelier's principle. Iron(II) in the abiotic experiment was allowed to build up in solution which led to a decrease in its overall release rate. For example, the percentage of Fe, Al and Ti leached (dissolved + reactive mineral precipitates) from the Mars simulant in the A. ferrooxidans experimental system was 34, 41 and 13% of the total Fe, Al and Ti in the basalt, respectively, while the abiotic experimental system released totals of only 11, 25 and 2%. There was, however, no measurable difference in the amounts of Fe and Ti released from ilmenite in the experiments with A. ferrooxidans versus the abiotic controls. P. mendocina scavenged some Fe from the rock/mineral substrates, but the overall amount of leaching was small (<2% of total Fe in rocks) when compared with the acidophilic systems. Although the mineralogy of the tested basaltic rocks was roughly similar, the surface areas of the lunar and Mars simulants varied greatly and thus were possible factors in the overall amount of metals released. Overall, our results indicate that the presence of bacteria does not increase the overall silica leaching rates of basaltic rocks; however, the presence of A. ferrooxidans does lead to enhanced release of Fe, Al and Ti and subsequent sequestration of Fe (and other metals) in Fe(III)-precipitates. JF - International Journal of Astrobiology AU - Navarrete, Jesica U AU - Cappelle, Ian J AU - Schnittker, Kimberlin AU - Borrok, David M AD - University of California, Santa Cruz, NASA Ames Research Center, Mail Stop 239-20, Moffett Field, CA, USA e-mail: ,,; junavarr@ucsc.edu] jesica.u.navarrete@nasa.gov Y1 - 2013/04// PY - 2013 DA - Apr 2013 SP - 123 EP - 134 PB - Cambridge University Press, The Edinburgh Building, Cambridge CB2 2RU United Kingdom VL - 12 IS - 2 SN - 1473-5504, 1473-5504 KW - Microbiology Abstracts A: Industrial & Applied Microbiology; Microbiology Abstracts B: Bacteriology KW - Leaching KW - Moon KW - Heavy metals KW - Surface area KW - Silicic acid KW - Pseudomonas mendocina KW - Silica KW - Acidithiobacillus ferrooxidans KW - Heat KW - Mining KW - Minerals KW - pH effects KW - Iron KW - J 02320:Cell Biology KW - A 01400:Soil Microbes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1399915426?accountid=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=International+Journal+of+Astrobiology&rft.atitle=Bioleaching+of+ilmenite+and+basalt+in+the+presence+of+iron-oxidizing+and+iron-scavenging+bacteria&rft.au=Navarrete%2C+Jesica+U%3BCappelle%2C+Ian+J%3BSchnittker%2C+Kimberlin%3BBorrok%2C+David+M&rft.aulast=Navarrete&rft.aufirst=Jesica&rft.date=2013-04-01&rft.volume=12&rft.issue=2&rft.spage=123&rft.isbn=&rft.btitle=&rft.title=International+Journal+of+Astrobiology&rft.issn=14735504&rft_id=info:doi/10.1017%2FS1473550412000493 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-07-01 N1 - Number of references - 35 N1 - Last updated - 2013-11-04 N1 - SubjectsTermNotLitGenreText - Silica; Leaching; Heat; Heavy metals; Moon; Surface area; Silicic acid; Mining; Iron; pH effects; Minerals; Pseudomonas mendocina; Acidithiobacillus ferrooxidans DO - http://dx.doi.org/10.1017/S1473550412000493 ER - TY - JOUR T1 - Simulation of inflated pahoehoe lava flows AN - 1371761958; 2013-049498 AB - A new stochastic model simulates late-stage pahoehoe lobes where random processes dominate emplacement. The model prescribes probabilistic rules for determining where and when parcels of lava move within the lobe. Unlike a classical Brownian motion random walk, the model allows individual parcels to remain dormant, but fluid, for multiple time steps. The randomness of parcel volume transfers within the lobe interior as well as at the margins qualitatively reflects inflation processes observed in the field. The fraction of inflated volume to total volume increases with the total volume, with greater than 75% of the lobe volume contributed through inflation for typical lobes. The influence on planform shape and topographic cross-sectional profiles of total volume, source area and shape, topographic confinement, and sequential breakouts at the lobe margins, are all explored with the stochastic model. Each of these factors influences the overall lobe thickness and width. The model provides a means for assessing the relative importance of these processes through comparisons with field data. For the first time, Gaussian and parabolic functions are quantitatively fit to field measurements of pahoehoe lobes. Both functional forms provide adequate description of the cross-sectional flow shapes. When comparing simulated lobes to field data, sequential breakouts at the lobe margins are found to be an important process controlling the final topographic distribution of observed pahoehoe lobes. Abstract Copyright (2013) Elsevier, B.V. JF - Journal of Volcanology and Geothermal Research AU - Glaze, Lori S AU - Baloga, Stephen M Y1 - 2013/04/01/ PY - 2013 DA - 2013 Apr 01 SP - 108 EP - 123 PB - Elsevier, Amsterdam VL - 255 SN - 0377-0273, 0377-0273 KW - lava flows KW - simulation KW - emplacement KW - Brownian motion KW - morphology KW - models KW - random walk KW - topography KW - stochastic processes KW - lava KW - eruptions KW - volume KW - volcanoes KW - thickness KW - dimensions KW - pahoehoe KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1371761958?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Simulation+of+inflated+pahoehoe+lava+flows&rft.au=Glaze%2C+Lori+S%3BBaloga%2C+Stephen+M&rft.aulast=Glaze&rft.aufirst=Lori&rft.date=2013-04-01&rft.volume=255&rft.issue=&rft.spage=108&rft.isbn=&rft.btitle=&rft.title=Journal+of+Volcanology+and+Geothermal+Research&rft.issn=03770273&rft_id=info:doi/10.1016%2Fj.jvolgeores.2013.01.018 L2 - http://www.sciencedirect.com/science/journal/03770273 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2013-01-01 N1 - Number of references - 38 N1 - Document feature - illus. incl. 2 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2013-06-27 N1 - CODEN - JVGRDQ N1 - SubjectsTermNotLitGenreText - Brownian motion; dimensions; emplacement; eruptions; lava; lava flows; models; morphology; pahoehoe; random walk; simulation; stochastic processes; thickness; topography; volcanoes; volume DO - http://dx.doi.org/10.1016/j.jvolgeores.2013.01.018 ER - TY - JOUR T1 - PHARMACOLOGY IN LONG DURATION SPACEFLIGHT AN - 1356930202; 18013583 AB - INTRODUCTION: Long duration exploration missions will require additional examination of pharmacokinetics, pharmacodynamics and of the medications themselves. Potential issues include medication stability over long periods of time. Stability may be improved with packaging materials that protect from oxygen or humidity or with packaging methods that provide better protection for unused doses. Also, it is well established from current and past spaceflight missions that many alterations are observed in human physiology. Some of these, particularly those involving fluid shifting, regional blood flow, and metabolism, seem to have the potential to affect how medications are handled by the body (pharmacokinetics). It may be that dosing strategies should be altered to provide optimal therapeutic efficacy while limiting untoward effects. Other physiological changes, such as receptor or enzyme expression in an affected tissue or cell type, could change expression or activity of medication targets, and possibly requiring different therapeutic choices. Currently, there are many open questions regarding the actions of pharmaceuticals during spaceflight missions of any length. Planning for future missions will incorporate research required to address the possibilities discussed here. JF - Aviation, Space, and Environmental Medicine AU - Wotring, V AD - NASA Johnson Space Center, Houston, TX Y1 - 2013/04// PY - 2013 DA - Apr 2013 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Health & Safety Science Abstracts KW - Pharmacology KW - Physiology KW - Humidity KW - Enzymes KW - Drugs KW - Pharmacokinetics KW - Metabolism KW - Packaging KW - Packaging materials KW - H 2000:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356930202?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=PHARMACOLOGY+IN+LONG+DURATION+SPACEFLIGHT&rft.au=Wotring%2C+V&rft.aulast=Wotring&rft.aufirst=V&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=431a&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-04-09 N1 - SubjectsTermNotLitGenreText - Pharmacology; Physiology; Enzymes; Humidity; Drugs; Metabolism; Pharmacokinetics; Packaging materials; Packaging ER - TY - JOUR T1 - NUTRITION ISSUES FOR EXPLORATION MISSIONS AN - 1356930188; 18013582 AB - INTRODUCTION: Nutrition has proven critical to the success, or in many cases failure, of exploration missions throughout history. As we contemplate sending humans beyond low Earth orbit, understanding the nutrient requirements and the role of nutrition in maintaining crew health will be important. While shorter-duration, the International Space Station provides an important platform for research to clarify these issues. Several recent findings highlight the importance of nutrition in crew health, while other areas require research and clarification. METHODS: Vision issues among some crewmembers have been identified as the highest impact risk of human spaceflight. While much research is being initiated to understand intracranial hypertension, biochemical evidence suggests that folate-dependent one carbon metabolism may have a role in this pathology. With regard to bone health, it has been recently documented that adequate nutritional intake (including energy and vitamin D) along with heavy exercise allows for the maintenance of bone mineral density. Further studies are currently being conducted to assess effects on bone strength. Additional research is also required, to optimize intakes of protein, potassium, sodium, and omega-3 fatty acids among other nutrients, to help protect bone. RESULTS: Iron metabolism is a significant concern for space travelers, in part related to the contraction of the circulatory volume during flight. Excess iron stores have proven detrimental in epidemiological studies on Earth, and oxidative damage may be exacerbated. Antioxidants are of concern in the spaceflight environment, but defining requirements, arid conducting research in this area is even more difficult than most because of so many confounding factors. These are some examples of how nutrition plays a role in human health with specific implications for spaceflight. DISCUSSION: Defining nutritional requirements, monitoring dietary intake, and a broad-based biochemical surveillance will be required on explorations to ensure the health and safety of these crews before, during, and after their exploration missions. JF - Aviation, Space, and Environmental Medicine AU - Smith, S AU - Zwart, S AD - NASA lohnson Space Center, Houston, TX Y1 - 2013/04// PY - 2013 DA - Apr 2013 SP - 431 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Health & Safety Science Abstracts KW - Sodium KW - Bone mineral density KW - Biochemistry KW - Fatty acids KW - Ingestion KW - Nutrition KW - Iron KW - Metabolism KW - Maintenance KW - H 2000:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356930188?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=NUTRITION+ISSUES+FOR+EXPLORATION+MISSIONS&rft.au=Smith%2C+S%3BZwart%2C+S&rft.aulast=Smith&rft.aufirst=S&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=431&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Sodium; Bone mineral density; Biochemistry; Fatty acids; Ingestion; Iron; Nutrition; Maintenance; Metabolism ER - TY - JOUR T1 - IS ADVANCED RESISTANCE EXERCISE THE SOLUTION? AN - 1356929250; 18013553 AB - INTRODUCTION: Resistance exercise is the only operational countermeasure for protection of physical fitness, particularly maintenance of neuro-musculoskeletal health. Ground studies demonstrate benefits of resistance exercise for cardiovascular health, but the most profound influences are musculoskeletal. There is substantial evidence from spaceflight analogs that 3 days/week of' high intensity resistance exercise is sufficient to prevent loss of muscle size and strength; results on bone loss are also promising. Muscles and bones of the lower body are particularly vulnerable to spaceflight induced losses. METHODS: The interim resistive exercise device (iRED) was the first resistance exercise device on the International Space Station. The advanced resistive exercise device (ARED) was installed during Expedition 22 in 2008. To date approximately 23 USOS long duration crew members have used each device. The average loss of muscle strength/work for various muscle groups will be shown. RESULTS: Current average strength losses range from 6-14% depending on muscle group and such losses are deemed acceptable and crew members are able to perform nominal mission duties. In the absence of resistance exercise countermeasures loss of muscle strength has been reported in the 30-40% range (long duration bed rest or MIR station). Bone mineral density has improved when comparing MIR to IRED and ARED, with ARED showing the greatest maintenance of bone mineral density. DISCUSSION: Clearly resistance exercise is protective of skeletal muscle and bone during unloading and for this reason it remains the primary operational countermeasure. Current research focuses on optimizing exercise prescription for use on ARED. Future research will need to identify key requirements for the next generation of exercise hardware. Exploration vehicles will have space and power constraints requiring small compact exercise equipment that is capable of allowing high intensity resistance exercise (heavy loads). JF - Aviation, Space, and Environmental Medicine AU - Ploutz-Snyder, L AD - NASA Johnson Space Center, Houston, TX Y1 - 2013/04// PY - 2013 DA - Apr 2013 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Physical Education Index; Health & Safety Science Abstracts KW - Bones KW - Muscles (exercise effects) KW - Training (equipment) KW - Muscles KW - Health KW - Resistance exercise KW - Maintenance KW - Strength KW - Musculoskeletal system KW - Bone mineral density KW - Exercise (intensity) KW - Vulnerability KW - Minerals KW - Expeditions KW - H 2000:Transportation KW - PE 030:Exercise, Health & Physical Fitness UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356929250?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aphysicaleducation&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=IS+ADVANCED+RESISTANCE+EXERCISE+THE+SOLUTION%3F&rft.au=Ploutz-Snyder%2C+L&rft.aulast=Ploutz-Snyder&rft.aufirst=L&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=422a&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - Physical Education Index; ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-09-17 N1 - SubjectsTermNotLitGenreText - Strength; Bone mineral density; Bones; Muscles (exercise effects); Exercise (intensity); Training (equipment); Muscles; Health; Resistance exercise; Musculoskeletal system; Vulnerability; Minerals; Maintenance; Expeditions ER - TY - JOUR T1 - SENSORIMOTOR COUNTERMEASURES: IMPROVING PERFORMANCE DURING GRAVITATIONAL TRANSITIONS AN - 1356929237; 18013552 AB - INTRODUCTION: Astronauts experience disturbances in sensorimotor function during and after gravitational transitions. These sensorimotor disturbances may lead to disruption in the ability to control vehicles and perform functional tasks during the initial introduction to a novel gravitational environment following a landing on a planetary surface. Several countermeasure approaches are currently being pursued to mitigate sensorimotor disturbances and improve performance. To facilitate rapid adaptation to novel gravitational environments we have developed a unique training system comprised of a treadmill placed on a motion-base facing a virtual visual scene that provides an unstable walking surface combined with incongruent visual flow designed to enhance sensorimotor adaptability. Our studies show that adaptability training can accelerate adaptation to novel sensory environments improving balance and multi-tasking ability and these benefits can be retained for 6 months or more after completion of training. In a second approach to provide augmentation of sensory function we are using vestibular stochastic resonance (SR) stimulation to enhance the ability of the vestibular system to detect relevant information. To implement vestibular SR, imperceptibly low levels of white noise-based stochastic electrical stimulation was directed to the vestibular system using electrodes placed over the mastoid processes. This input improved balance, locomotor and perception of tilt during periods of sensory challenge. In a third approach we are using vibrotactile feedback to display orientation information to the torso via tactile stimulators to convey orientation cues such as an individual's position relative to gravity or motion. We showed that a vibrotactile sensory aid improved astronaut postflight manual control performance in a motion-nulling task. In practice, all three countermeasures can be used in a complementary fashion to create an integrated countermeasure suite to improve performance during complex crew operations during and after gravitational transitions. JF - Aviation, Space, and Environmental Medicine AU - Bloomberg, J AU - Mulavara, A AU - Peters, B AU - Wood, S AU - Reschke, M AD - NASA Johnson Space Center, Houston, TX Y1 - 2013/04// PY - 2013 DA - Apr 2013 SP - 422 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Health & Safety Science Abstracts KW - Adaptability KW - Training KW - Perception KW - Electrodes KW - H 2000:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356929237?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=SENSORIMOTOR+COUNTERMEASURES%3A+IMPROVING+PERFORMANCE+DURING+GRAVITATIONAL+TRANSITIONS&rft.au=Bloomberg%2C+J%3BMulavara%2C+A%3BPeters%2C+B%3BWood%2C+S%3BReschke%2C+M&rft.aulast=Bloomberg&rft.aufirst=J&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=422&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-04-09 N1 - SubjectsTermNotLitGenreText - Adaptability; Perception; Training; Electrodes ER - TY - JOUR T1 - Ol: IS THE GAP REALLY CLOSED FOR MARS EXPLORATION? AN - 1356929224; 18013551 AB - INTRODUCTION: It is well documented that the cardiovascular system is affected by spaceflight. One of the most researched cardiovascular changes negatively impacting flight operations and crew safety is postflight orthostatic intolerance (OI). Astronauts who have OI are unable to maintain arterial pressure and cerebral perfusion during upright posture, and may experience presyncope or, ultimately, syncope (typically upon return to 1 C). OI has been the most intensely studied CV alteration, yet the mechanisms behind changes in cardiovascular function due to spaceflight are still not completely understood. Theories include cardiac atrophy, altered vascular function, adrenergic dysfunction, etc. One factor that links these mechanisms to OI is diminished venous return/stroke volume, possibly secondary to the cephalad fluid shift and subsequent fluid redistribution associated with weightlessness. However, other factors of spaceflight (radiation, muscle disuse, diet, etc.) cannot be ignored, and may be even more important during extended duration missions. RESULTS: OI has the potential to diminish the ability of the crew to egress the vehicle or perform extended work after landing. While this problem affects about 20-30% of crewmembers that fly short duration missions (4-18 days) and 83% of astronauts that fly long duration missions (3-6 months), a full complement of countermeasures is likely to reduce the risk to the crew to acceptable levels. DISCUSSION: Current countermeasures include; fluid loading, re-entry compression suit, post-flight compression suit (still in development), and immediate access to medical personnel/treatment. Additionally, more robust exercise countermeasure hardware, the Advanced Resistive Exercise Device and the second generation Treadmill with Vibration Isolation, are now available and may act as countermeasures for OI as well. The central question is..."what does this mean for Mars or other extended duration missions"? We will discuss the potential efficacy of current countermeasures in 3/8 C as well as upon return to Earth from Mars or other extended duration missions. JF - Aviation, Space, and Environmental Medicine AU - Platts, S AD - National Aeronautics and Space Administration (NASA), Houston, TX Y1 - 2013/04// PY - 2013 DA - Apr 2013 SP - 421b EP - 4422 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Risk Abstracts; Health & Safety Science Abstracts KW - Diets KW - Cardiovascular system KW - Vibration KW - Muscles KW - Risk reduction KW - Posture KW - Crew safety KW - Medical personnel KW - H 2000:Transportation KW - R2 23060:Medical and environmental health UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356929224?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=Ol%3A+IS+THE+GAP+REALLY+CLOSED+FOR+MARS+EXPLORATION%3F&rft.au=Platts%2C+S&rft.aulast=Platts&rft.aufirst=S&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=421b&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Diets; Cardiovascular system; Vibration; Muscles; Risk reduction; Posture; Crew safety; Medical personnel ER - TY - JOUR T1 - WHAT IS A FUTURE LONG-TERM EXPLORATION MISSION? AN - 1356929216; 18013550 AB - INTRODUCTION: Human missions to Mars are NASA's long-range space exploration goal, but other piloted missions beyond low Earth orbit are also under consideration: lunar fly-by, cis-lunar (including Earth-Moon Lagrange Points), lunar surface, near-Earth asteroid, and Mars orbit (including visits to a Martian moon). Benchmarking the Mars surface mission has permitted NASA's Human Research Program (HRP) to identify the likely set of highest risks to human health, safety and performance during such missions. The first Mars mission will subject its crew to a combination of physical and psychological risks and stresses that no previous human has endured. They will become the most remote, self-sufficient and autonomous group of explorers in history, owing to the unprecedented distance they will travel from Earth, the time required for their journey and the chemical or nuclear energy release that will make it possible. They may also be the most heavily scrutinized group of explorers in history, thanks to 21st-century monitoring capabilities and the world-wide interest in their progress. NASA's scenario involves a six-month transit from Earth to Mars, eighteen months on the planet's surface, and a six-month transit back to Earth. There will be no resupply during the transits, and provisions available on Mars will have been delivered over two years earlier. Mars' surface gravity of 3/8-g is assumed to be more protective than weightlessness, but cannot be quantified yet. The planet's bulk and atmosphere will shield against galactic cosmic radiation and solar particle events but less effectively than Earth's atmosphere and magnetic field. HRP's exploration mission risk assessment shows that the Mars surface mission provides the most challenging scenario, due to both the known and the unanticipated hazards. Adoption of this mission as a goal will require the acceptance of a very real chance of failure, including injury to and loss of the astronauts. JF - Aviation, Space, and Environmental Medicine AU - Charles, J AD - NASA Johnson Space Center, Houston, TX Y1 - 2013/04// PY - 2013 DA - Apr 2013 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Risk Abstracts; Health & Safety Science Abstracts KW - Risk assessment KW - Travel KW - Historical account KW - Magnetic fields KW - Nuclear energy KW - Atmosphere KW - Crew safety KW - Occupational exposure KW - Research programs KW - H 2000:Transportation KW - R2 23060:Medical and environmental health UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356929216?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=WHAT+IS+A+FUTURE+LONG-TERM+EXPLORATION+MISSION%3F&rft.au=Charles%2C+J&rft.aulast=Charles&rft.aufirst=J&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=421a&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Travel; Risk assessment; Magnetic fields; Historical account; Nuclear energy; Crew safety; Atmosphere; Research programs; Occupational exposure ER - TY - JOUR T1 - SCIENTIFIC AND LOGISTICS ISSUES ASSOCIATED WITH DIRECT RETURN OF US OPERATING SYSTEM CREWMEMBERS AFTER SOYUZ LANDING AN - 1356929133; 18013325 AB - INTRODUCTION: US crewmembers have been flying to the International Space Station (ISS) on Russian Soyuz vehicles from the beginning of crewed operations. Upon the retirement of the Space Shuttle in 2011, the Soyuz has been the only route available for crew transport to ISS. Initially, the 3 person Soyuz crew was recovered in Kazakhstan and return as a group to the Gagarin Cosmonaut Training Center (GCTC). The crew would remain in GCTC for 3-4 weeks for post flight rehabilitation as well as medical and research tests. Upon initiation of 6-crew operation and the utilization phase of ISS, the science program associated with each US Operating System (USOS) crewmember increased in scope and complexity. These science requirements began to exceed the resources available to US scientists in GCTC. These resource constraints drove consideration of other options and resulted in the current strategy of returning USOS crew directly to the US after Soyuz landing. The technical issues and resources considerations that support the establishment of direct return will be described and the impacts to science and future operations will be discussed. JF - Aviation, Space, and Environmental Medicine AU - Sams, C AD - NASA Lyndon B Johnson Space Center, Houston, TX Y1 - 2013/04// PY - 2013 DA - Apr 2013 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Health & Safety Science Abstracts KW - USA KW - Training KW - Kazakhstan KW - Space shuttle KW - H 2000:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356929133?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=SCIENTIFIC+AND+LOGISTICS+ISSUES+ASSOCIATED+WITH+DIRECT+RETURN+OF+US+OPERATING+SYSTEM+CREWMEMBERS+AFTER+SOYUZ+LANDING&rft.au=Sams%2C+C&rft.aulast=Sams&rft.aufirst=C&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=353b&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Training; Space shuttle; USA; Kazakhstan ER - TY - JOUR T1 - COULD MEDICATIONS BE INVOLVED IN VISION AND INTRACRANIAL PRESSURE CHANGES SEEN IN SPACEFLIGHT? AN - 1356929056; 18013487 AB - INTRODUCTION: Vision changes, sometimes associated with intracranial pressure changes (VHP), have been noted in some long duration crewmembers. Changes in vision and blood pressure (which can subsequently affect intracranial pressure) are not uncommon side effects of medications. The purpose of this study was to explore the possibility of medication involvement in crew VHP symptoms. METHODS: The Food and Drug Association Adverse Event Reports(FDA AER) from 2009-2011 were used to create a database of millions of known and suspected medication-related adverse events among the general public. Cases involving individuals younger than 18 or older than 65 were removed from the analysis, as were individuals under treatments for cancer or organ transplant. The database was queried for VHP symptoms, with results limited to those medications included in the ISS kit. RESULTS: The medications most likely to be associated with VHP-type symptoms were pain relievers (ibuprofen, aspirin, acetaminophen) with 1529 reported incidents, and steroids (predisolone, dexamethasone) with 753. Other medications were found to have fewer reports, like promethazine with 84 and pseudoephedrine/ephedrine with 69 over the same three year period. DISCUSSION: Data from the FDA AER substantiates the association between adverse events similar to VHP symptoms with use of certain medications. It should be noted that the overall frequency of adverse events cannot be determined from the FDA AER, since the number of uneventful instances of medication use is not captured in the data. Notwithstanding, the data from the FDA AER can be used to focus future research on crew medication use data to the most likely possibilities. JF - Aviation, Space, and Environmental Medicine AU - Wotring, V AD - NASA Johnson Space Center, Houston, TX Y1 - 2013/04// PY - 2013 DA - Apr 2013 SP - 402b EP - 4403 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Health & Safety Science Abstracts KW - Vision KW - FDA KW - Pain KW - Drugs KW - Steroids KW - Organs KW - Cancer KW - Side effects KW - Blood pressure KW - H 2000:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356929056?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=COULD+MEDICATIONS+BE+INVOLVED+IN+VISION+AND+INTRACRANIAL+PRESSURE+CHANGES+SEEN+IN+SPACEFLIGHT%3F&rft.au=Wotring%2C+V&rft.aulast=Wotring&rft.aufirst=V&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=402b&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Vision; FDA; Pain; Organs; Steroids; Drugs; Blood pressure; Side effects; Cancer ER - TY - JOUR T1 - CHALLENGES AND OPPORTUNITIES IN MANAGING 50 YEARS OF ASTRONAUT MEDICAL RECORDS AN - 1356929008; 18013422 AB - INTRODUCTION: NASA Space Medicine evolved from occupational and aviation medicine. NASA's early association with the Department of Defense provided a structure for standardized data collection using standard forms (SF) for documenting findings from physical exams (SF88) and personal medical history (SF93). Initial NASA medical testing for astronauts was performed at various military posts before the establishment of the Manned Spaceflight Center (now Johnson Space Center) in 1963, where most medical monitoring currently occurs. The content of annual physical exams for the astronaut corps has remained relatively consistent. However, changes in medical practice and methods of documentation, as well as different NASA programmatic needs to support varying flight programs from Gemini to ISS, have had an influence on how clinical data is managed. Before the Space Shuttle Program, NASA medical staff provided care for the astronaut corps both on the ground and in-flight, and in-flight medical data was filed separately from clinic records. Additionally, in-flight medical records were comprised of both research and clinical data elements. Federal human research subject regulations initiated in 1974 dictated separation of medical data collection and personnel for terrestrial and in-flight clinical care, and for research. More recently, a renewed focus on continuity of care and occupational surveillance, for both the immediate and lifetime needs of the astronaut corps, has led to additional challenges and opportunities for growth in clinical and surveillance data management. JF - Aviation, Space, and Environmental Medicine AU - Van Baalen, M AU - Tarver, W AU - Mason, S AU - Wear, M AU - Bradley, T AU - Johnson, M AU - Patterson, D AU - David, S AU - Parisian, D AU - Mcgrath, J AU - Trevino, G AU - Johnson-Throop, K AD - NASA Lyndon B Johnson Space Center, Houston, TX Y1 - 2013/04// PY - 2013 DA - Apr 2013 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Health & Safety Science Abstracts KW - Historical account KW - Data collection KW - Standards KW - Space shuttle KW - Military KW - Data management KW - H 1000:Occupational Safety and Health UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356929008?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=CHALLENGES+AND+OPPORTUNITIES+IN+MANAGING+50+YEARS+OF+ASTRONAUT+MEDICAL+RECORDS&rft.au=Van+Baalen%2C+M%3BTarver%2C+W%3BMason%2C+S%3BWear%2C+M%3BBradley%2C+T%3BJohnson%2C+M%3BPatterson%2C+D%3BDavid%2C+S%3BParisian%2C+D%3BMcgrath%2C+J%3BTrevino%2C+G%3BJohnson-Throop%2C+K&rft.aulast=Van+Baalen&rft.aufirst=M&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=382b&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Historical account; Data collection; Standards; Military; Space shuttle; Data management ER - TY - JOUR T1 - AEROMEDICAL DISPOSITION AND WAIVER CONSIDERATION FOR ISS CREWMEMBERS AN - 1356928955; 18013494 AB - INTRODUCTION: Aeromedical certification of astronauts and cosmonauts traveling to the International Space Station is a multi-tiered process that involves standards agreed to by the partner agencies, and participation by the individual agency aeromedical boards and a multilateral space medicine board. Medical standards are updated continually by a multilateral working group. The boards operate by consensus and strive to achieve effective decision making through experience, medical judgment, medical evidence and risk modeling. The aim of the certification process is to minimize the risk to the ISS program of loss of mission objectives due to human health issues. JF - Aviation, Space, and Environmental Medicine AU - Taddeo, T AD - NASA Lyndon B Johnson Space Center, Houston, TX Y1 - 2013/04// PY - 2013 DA - Apr 2013 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Risk Abstracts; Health & Safety Science Abstracts KW - Decision making KW - Certification KW - Risk reduction KW - International standardization KW - H 2000:Transportation KW - R2 23060:Medical and environmental health UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356928955?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=AEROMEDICAL+DISPOSITION+AND+WAIVER+CONSIDERATION+FOR+ISS+CREWMEMBERS&rft.au=Taddeo%2C+T&rft.aulast=Taddeo&rft.aufirst=T&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=404d&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Decision making; Risk reduction; Certification; International standardization ER - TY - JOUR T1 - DIRECT RETURN TRAINING AN - 1356928875; 18013323 AB - INTRODUCTION: The Direct Return mission is unique in the medical transport, or medical spaceflight operational support realms. A specialized training program was developed for the mission requirements levied on the system. This program augmented the experience and knowledge base of Flight Surgeons specialized in aerospace medicine. These Flight Surgeons come from various specialties and few of them have had air transport training. Training therefore was derived from previous commercial and military aeromedical transport programs. Also an emphasis was placed on field expedient diagnosis using advanced diagnostic equipment. This supported the philosophy of detection of subclinical disease and injury that could worsen in-flight to a decompensated clinical presentation. Sessions include aeromedical therapeutic standards and equipment, emergency surgical procedures, bedside diagnostic laboratories, as well as clinical ultrasound practices. JF - Aviation, Space, and Environmental Medicine AU - Alexander, O AD - NASA Lyndon B Johnson Space Center, Houston, TX Y1 - 2013/04// PY - 2013 DA - Apr 2013 SP - 353 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Health & Safety Science Abstracts KW - Injuries KW - Training KW - Surgery KW - Military KW - Medical personnel KW - H 1000:Occupational Safety and Health UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356928875?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=DIRECT+RETURN+TRAINING&rft.au=Alexander%2C+O&rft.aulast=Alexander&rft.aufirst=O&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=353&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Injuries; Training; Surgery; Military; Medical personnel ER - TY - JOUR T1 - THE BLEEDING EDGE OF SPACE MEDICINE -DEVELOPING THE CLINIC PRACTICE GUIDELINE FOR VISION IMPAIRMENT INTRACRANIAL PRESSURE (VHP) AN - 1356928777; 18013235 AB - INTRODUCTION: NASA and its international partners have been working diligently to develop medical care guidance for its space medicine specialists for this newly uncovered space unique entity. This challenging task has involved the review of terrestrial medicine analogs, developing new hypotheses based on previously untrod pathophysiology models, determining new occupational monitoring tests, and partnering with the Human Research Program to identify research needed to fill in our knowledge gaps. NASA first approved a VHP CPC in 2010, with a significant revision in the works for 2012. DISCUSSION: This presentation will detail the latest NASA Clinical Practice Guideline for VHP- the culmination of many person-years of effort. JF - Aviation, Space, and Environmental Medicine AU - Tarver, W AD - NASA Lyndon B Johnson Space Center, Houston, TX Y1 - 2013/04// PY - 2013 DA - Apr 2013 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Health & Safety Science Abstracts KW - Vision KW - Reviews KW - Guidelines KW - Research programs KW - H 1000:Occupational Safety and Health UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356928777?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=THE+BLEEDING+EDGE+OF+SPACE+MEDICINE+-DEVELOPING+THE+CLINIC+PRACTICE+GUIDELINE+FOR+VISION+IMPAIRMENT+INTRACRANIAL+PRESSURE+%28VHP%29&rft.au=Tarver%2C+W&rft.aulast=Tarver&rft.aufirst=W&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=325b&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Vision; Reviews; Guidelines; Research programs ER - TY - JOUR T1 - BODY MASS MEASUREMENT DURING SPACE FLIGHT AN - 1356928734; 18013364 AB - INTRODUCTION: Maintaining body mass during space flight is crucial for maintaining crew health, and monitoring body mass is thus important to medical operations as well as being a key component of human research. Early space flights have shown that many crewmem-bers do not consume their caloric requirement and therefore lose body mass during flight. Inadequate dietary intake during flight has been associated with increased muscle and bone loss, cardiovascular decrements, and increased oxidative damage. Determining body mass, a simple endeavor on Earth, becomes rather difficult in a microgravity environment. Spring oscillation principles were used by in-flight body mass measurement devices on Skylab (early 1970s), Mir, and the early International Space Station (ISS). METHODS: The Space Linear Acceleration Mass Measurement Device (SLAMMD) was developed by the Human Research Program (HRP) and after initial testing on a Space Shuttle mission, was deployed on the ISS during Expedition 11 in 2005. SLAMMD utilizes Newton's Second Law of Motion (F=ma). The crewmember is steadied on a guiding arm, and two springs generate a known force pulling the guiding arm (and crewmember). The time to travel a measured distance (i.e., their acceleration) resulting from the known force is measured, and is then used to calculate body mass. RESULTS: SLAMMD is precise to plus or minus 0.5 lb over a range of 90-240 lb, which is intended to capture body mass from the 5th-percentile Japanese woman to the 95th-percentile American man. Dietary intake data tracks with SLAMMD data, indicating that caloric requirements during flight are not different from requirements on Earth. Additionally, crewmembers who maintain body mass during flight generally lose less bone and muscle mass. DISCUSSION: It will be important to continue to monitor body mass during flight to track crew health during a mission, and to help ensure that crewmembers consume adequate energy intake to mitigate risks of space flight. JF - Aviation, Space, and Environmental Medicine AU - Smith, S AU - Coen, G AU - Launius, R AU - Zwart, S AD - NASA Johnson Space Center, Houston, TX Y1 - 2013/04// PY - 2013 DA - Apr 2013 SP - 365c EP - 3366 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Risk Abstracts; Health & Safety Science Abstracts KW - Bone KW - Diets KW - Travel KW - Body mass KW - Muscles KW - Risk reduction KW - Ingestion KW - Space shuttle KW - Japan KW - Expeditions KW - H 2000:Transportation KW - R2 23060:Medical and environmental health UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356928734?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=BODY+MASS+MEASUREMENT+DURING+SPACE+FLIGHT&rft.au=Smith%2C+S%3BCoen%2C+G%3BLaunius%2C+R%3BZwart%2C+S&rft.aulast=Smith&rft.aufirst=S&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=365c&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Travel; Diets; Bone; Body mass; Muscles; Risk reduction; Space shuttle; Ingestion; Expeditions; Japan ER - TY - JOUR T1 - OVERVIEW OF THE SYNDROME OF MICROGRAVITY INDUCED INTRACRANIAL HYPERTENSION AND OCULAR PATHOLOGY AN - 1356928708; 18013233 AB - INTRODUCTION: With accumulating experience with Long Duration Spaceflight, it has become apparent that a subset of our population is at risk for the development of ocular findings and visual symptoms with much in common with elevated intracranial pressure. This session will briefly lay out the clinical observations to date and orient attendees to the classification system used to stratify subjects, without providing information that would allow data to be attributed to particular astronauts or cosmonauts. JF - Aviation, Space, and Environmental Medicine AU - Hart, S AU - Tarver, W AU - Moynihan, S AU - Alexander, D AD - NASA Lyndon B Johnson Space Center, Houston, TX Y1 - 2013/04// PY - 2013 DA - Apr 2013 SP - 325 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Health & Safety Science Abstracts KW - Classification KW - Pathology KW - Hypertension KW - H 2000:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356928708?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=OVERVIEW+OF+THE+SYNDROME+OF+MICROGRAVITY+INDUCED+INTRACRANIAL+HYPERTENSION+AND+OCULAR+PATHOLOGY&rft.au=Hart%2C+S%3BTarver%2C+W%3BMoynihan%2C+S%3BAlexander%2C+D&rft.aulast=Hart&rft.aufirst=S&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=325&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Pathology; Classification; Hypertension ER - TY - JOUR T1 - NASA HUMAN FACTORS RESEARCH IN UNMANNED AIRCRAFT SYSTEMS AN - 1356928690; 18013307 AB - INTRODUCTION: A century of aviation evolution has resulted in accepted standardsandbest practices in thedesign of human-machine interfaces - the displays and controls which serve to optimize safe and efficient flight operations and situational awareness. The current proliferation of non-standard, aircraft-specific flight crew interfaces in Unmanned Aircraft Systems (UAS), coupled with the inherent limitations of operating UAS without in-situ sensory input and feedback (aural, visual, and vestibular cues), has increased the risk of mishaps associated with the design of the "cockpit". The examples of current non/substandard design features range from "annoying" and "inefficient", to those that are difficult to manipulate/interpret in a timely manner, as well as "burdensome" and "unsafe". A concerted effort is required to establish best practices and standards for the human-machine interfaces, for the pilot as well as the air traffic controller. METHODS: NASA, in collaboration with the Federal Aviation Administration (FAA), is pioneering various UAS technologies and procedures which may enable routine access to the National Airspace System (NAS), with an aim for Next Gen airspace operations. These tools will aid in the development of technologies and integrated capabilities that will enable high value missions for science, security, and defense, and open the door to low cost, extreme duration, stratospheric flight. NASA has initiated a multi-year project, UAS-lntegration-in-the-National-Airspace-System, which includes the development of a research ground control station. This RCCS, integrated with simulators and other aircraft, will serve as a tool in the investigation of human-machine interfaces designed to be compliant with the FAA air traffic management system. NASA's objective is to provide recommended standards and guidelines to enable routine, effective, efficient, and safe flight for UAS. JF - Aviation, Space, and Environmental Medicine AU - Pestana, M AD - NASA Dryden Flight Research Center, Edwards, CA Y1 - 2013/04// PY - 2013 DA - Apr 2013 SP - 347c EP - 3348 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Health & Safety Science Abstracts KW - Security KW - Aircraft KW - Air traffic control KW - Best practices KW - Guidelines KW - Human factors KW - Stratosphere KW - Technology KW - H 2000:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356928690?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=NASA+HUMAN+FACTORS+RESEARCH+IN+UNMANNED+AIRCRAFT+SYSTEMS&rft.au=Pestana%2C+M&rft.aulast=Pestana&rft.aufirst=M&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=347c&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Security; Aircraft; Air traffic control; Best practices; Guidelines; Human factors; Stratosphere; Technology ER - TY - JOUR T1 - BEHAVIORAL AND ELECTROPHYSIOLOGICAL ANALYSIS OF THE FUNCTIONAL CHANGES IN THE CNS FOLLOWING GAMMA RADIATION EXPOSURE AN - 1356928636; 18013187 AB - INTRODUCTION: The world's population is exposed to radiation both from natural sources(cosmic radiation, terrestrial radiation, radon gas) and human sources( medical x rays, consumer products, atmospheric testing of nuclear weapons, industrial uses). In addition to the public, astronauts interact with a complex radiation environment and while on mission to the ISS, the Moon or Mars they are exposed to ionizing radiation with effective doses from 50 to 2000 mSv. Radiation can provoke deterministic effects on tissue when a sufficient large number of cells have been damaged[1], stem cells are deprived of their proliferative and differentiating capacity or tissue function is adversely affected. Stochastic effects also occur when cells are not killed but are altered and bear the risk of mutations. METHODS: We will use a highly organized neural system, the statocyst organ, in isolated, but living, neural preparations of the brown snail (Helix aspersa) as our experimental model. After we exposed two groups of snails to 20Gy (38 animals) and 10OGy (24 animals), we have performed (1) a behavioral test directly correlated with CNS function in 5 timepoints following the exposure. We recorded (2) electrophysiological responses of vestibular afferents in an isolated CNS preparation of a control snail.in order to establish control parameters for future study of irradiated snails. The study aims to identify the functional changes associated with space environment, radiation exposures in particular. RESULTS: We found that the latency of body position change to sudden orientation change was increased in snails after the gamma radiation exposure. The effect depended was greater in larger dose, and had a tendency to increase over time. DISCUSSION: This study demonstrates that stratoreceptors generate action potentials and these discharges have a definable modulation in response to acceleration tests. In addition the negative gravitaxis response can be used as a behavioral market to estimate radiation damage. JF - Aviation, Space, and Environmental Medicine AU - Antoniadou, E AU - Popova, Y AU - Boyle, R AD - NASA-Ames Research Center, Champaign, IL Y1 - 2013/04// PY - 2013 DA - Apr 2013 SP - 312 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Toxicology Abstracts; CSA Neurosciences Abstracts; Health & Safety Science Abstracts KW - Central nervous system KW - Consumer products KW - Sensory neurons KW - Moon KW - Nuclear weapons KW - Gamma radiation KW - Terrestrial radiation KW - Organs KW - Stochasticity KW - Radon KW - statocysts KW - Weapons KW - Action potential KW - Stem cells KW - Dose-response effects KW - Ionizing radiation KW - Vestibular system KW - Helix aspersa KW - gamma Radiation KW - Consumers KW - Mutation KW - X 24390:Radioactive Materials KW - N3 11001:Behavioral and Cognitive Neuroscience KW - H 2000:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356928636?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=BEHAVIORAL+AND+ELECTROPHYSIOLOGICAL+ANALYSIS+OF+THE+FUNCTIONAL+CHANGES+IN+THE+CNS+FOLLOWING+GAMMA+RADIATION+EXPOSURE&rft.au=Antoniadou%2C+E%3BPopova%2C+Y%3BBoyle%2C+R&rft.aulast=Antoniadou&rft.aufirst=E&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=312&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Central nervous system; Sensory neurons; Moon; Stochasticity; Radon; statocysts; Stem cells; Action potential; Vestibular system; Ionizing radiation; gamma Radiation; Consumers; Mutation; Weapons; Consumer products; Dose-response effects; Nuclear weapons; Terrestrial radiation; Gamma radiation; Organs; Helix aspersa ER - TY - JOUR T1 - VISION CHANGES AFTER SPACE FLIGHT ARE RELATED TO ALTERATIONS IN FOLATE-DEPENDENT ONE-CARBON METABOLISM AN - 1356928602; 18013293 AB - INTRODUCTION: Many astronauts on International Space Station missions have presented with ophthalmic issues after flight, including optic disc edema, globe flattening, hyperopic shifts, choroidal folds, and cotton wool spots. METHODS: This study was conducted to determine whether the folate-dependent 1 -carbon pathway is altered in these individuals. Data were modeled to evaluate differences between individuals with ophthalmic changes (n=5) and those without them (n=15). We also correlated mean preflight serum concentrations of the 1-carbon metabolites with changes in measured refraction after flight. RESULTS: Serum homocysteine, cystathionine, 2-methylcitric acid, and methylmalonic acid concentrations were 25%-45% higher (P<0.001) in astronauts with ophthalmic changes than in those without them. These differences existed before, during, and after flight. Preflight serum homocysteine and cystathionine, along with in-flight serum folate, were significantly correlated (P<0.05) with postflight changes in refraction, and preflight serum concentrations of 2-methylcitric acid tended to be associated (P=0.06) with ophthalmic changes. There were no differences in creatinine clearance or serum vitamin B12 concentrations. DISCUSSION: The biochemical differences observed in those with vision issues suggest a role for the folate-dependent 1 -carbon transfer pathway in this pathology. A follow-up study to evaluate the incidence of one-carbon pathway polymorphisms in these individuals, and their association with vision related findings, is underway. The results could have profound impact for space travelers, in addition to the clinical implications for those remaining on Earth. JF - Aviation, Space, and Environmental Medicine AU - Smith, S AU - Gibson, C AU - Mader, T AU - Ericson, K AU - Ploutz-Snyder, R AU - Heer, M AU - Zwart, S AD - NASA Johnson Space Center, Houston, TX Y1 - 2013/04// PY - 2013 DA - Apr 2013 SP - 342b EP - 3343 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Health & Safety Science Abstracts KW - Optics KW - Cotton KW - Pathology KW - Biochemistry KW - Vision KW - Vitamins KW - Edema KW - Metabolites KW - Metabolism KW - H 2000:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356928602?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=VISION+CHANGES+AFTER+SPACE+FLIGHT+ARE+RELATED+TO+ALTERATIONS+IN+FOLATE-DEPENDENT+ONE-CARBON+METABOLISM&rft.au=Smith%2C+S%3BGibson%2C+C%3BMader%2C+T%3BEricson%2C+K%3BPloutz-Snyder%2C+R%3BHeer%2C+M%3BZwart%2C+S&rft.aulast=Smith&rft.aufirst=S&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=342b&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Optics; Cotton; Biochemistry; Pathology; Vision; Vitamins; Edema; Metabolites; Metabolism ER - TY - JOUR T1 - THE HYPOTHESIS OF CHOROIDAL ENGORGEMENT IN ASTRONAUTS: MEASURING CHOROIDAL CIRCULATION IN PARABOLIC FLIGHTS AN - 1356928558; 18013292 AB - INTRODUCTION: Mader et al (.1) recently presented a study in which astronauts were shown to experience changes in their vision and several other ocular alterations during space flight on-board the international space station (ISS) and the space shuttle orbiter. One of the hypotheses discussed to explain the hyperopic shift in astronauts is that of the choroidal expansion. To date, there have been no studies characterizing the exact nature of this visual dysfunction and thus no focused studies of ocular physiology have been undertaken to identify the cause(s). (1). T.H. Mader at al, "Optic disc edema, globe flattening, choroidal folds, and hyperopic shifts observed in astronauts after long-duration space flight", Ophthalmology. 2011 Oct; 118(10):2058-69. Epub 2011 Aug 17. METHODS: We conducted an experimental study of choroidal microcirculation on 25 volunteers (astronauts and non-astronauts) ranging in age from 23-50 years onboard NASA's KC-135 aircraft while flying parabolic trajectories to begin advanced research on the effects of "zero" gravity on choroidal circulation. A compact head-mounted laser Doppler Flowmetry (LDF) apparatus was used to evaluate ocular blood flow to test the hypothesis that ocular blood flow is altered at "zero" gravity (0G) and hypergravity (2C). RESULTS: The red blood cell speed, choroidal blood volume, and choroidal blood flow increased during "zero" gravity periods. This study shows that LDF technology with its non-invasive methodology can possibly be used to safely, simply, and reproducibly record choroidal blood flow in a "zero" gravity environment. DISCUSSION: The results point in the direction of the hypothesis that the choroidal engorgement mechanism may play a role in changing vision in astronauts due to the bolus of blood introduced into the eye in zero gravity periods of the parabolic flight. However, to confirm this hypothesis in ISS astronauts, measurements of choroidal blood flow are needed to be made in sustained microgravity environment on-board the ISS. JF - Aviation, Space, and Environmental Medicine AU - Ansari, R AD - NASA John H Glenn Research Center, Cleveland, OH Y1 - 2013/04// PY - 2013 DA - Apr 2013 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Health & Safety Science Abstracts KW - Optics KW - Age KW - Aircraft KW - Eye KW - Vision KW - Physiology KW - Edema KW - Space shuttle KW - Technology KW - H 2000:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356928558?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=THE+HYPOTHESIS+OF+CHOROIDAL+ENGORGEMENT+IN+ASTRONAUTS%3A+MEASURING+CHOROIDAL+CIRCULATION+IN+PARABOLIC+FLIGHTS&rft.au=Ansari%2C+R&rft.aulast=Ansari&rft.aufirst=R&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=342a&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-04-09 N1 - SubjectsTermNotLitGenreText - Optics; Age; Eye; Aircraft; Vision; Physiology; Edema; Space shuttle; Technology ER - TY - JOUR T1 - HUMAN FACTORS IN ACCIDENTS INVOLVING REMOTELY PILOTED AIRCRAFT AN - 1356928479; 18013305 AB - INTRODUCTION: Increasing use of RPA for military and civil applications has drawn attention to high mishap rates, which according to some studies exceed that associated with crewed aircraft by several orders of magnitude. By far, the greater percentage of RPA mishaps is attributed to human factors. Use of the term "unmanned" to describe any sort of autonomous or remotely piloted aircraft is often misunderstood to mean that there is little or no human-systems integration involved. In fact, RPA operations involve numerous people in every aspect of control, operation, and maintenance. In most respects RPA operations are identical to those involving conventionally crewed aircraft, but the geographic separation of aircraft and crew necessitates particular attention to human-factors engineering when developing such systems. METHODS: RPA accident data from U.S. military and government agencies were reviewed and analyzed to identify human-factors issues. Since RPA systems vary widely in size and complexity, the specific percentage of human-factors involvement varied according to aircraft model. RESULTS: Common contributors to RPA mishaps fell into several major categories: cognitive factors (pilot workload), physiological factors (fatigue and stress), environmental factors (situational awareness), staffing factors (training and crew coordination), and design factors (human-machine interface). DISCUSSION: Human error can almost always be traced to a variety of underlying causes. Any of these, alone or in combination, can degrade human performance and increase the likelihood of a mishap. Many of the mishaps examined could have been anticipated and prevented through analysis of user interfaces and procedures. JF - Aviation, Space, and Environmental Medicine AU - Merlin, P AD - NASA Dryden Flight Research Center, Lancaster, CA Y1 - 2013/04// PY - 2013 DA - Apr 2013 SP - 347 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Health & Safety Science Abstracts KW - USA KW - Accidents KW - Fatigue KW - Aircraft KW - Reviews KW - Stress KW - Human factors KW - Military KW - Maintenance KW - Working conditions KW - H 1000:Occupational Safety and Health UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356928479?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=HUMAN+FACTORS+IN+ACCIDENTS+INVOLVING+REMOTELY+PILOTED+AIRCRAFT&rft.au=Merlin%2C+P&rft.aulast=Merlin&rft.aufirst=P&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=347&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Accidents; Fatigue; Aircraft; Reviews; Stress; Human factors; Military; Working conditions; Maintenance; USA ER - TY - JOUR T1 - SUPPORTING TEAMS AND INDIVIDUALS UNDER CONDITIONS OF COMMUNICATION DELAY - LESSONS LEARNED FROM NEEMO 16 AN - 1356928437; 18013400 AB - INTRODUCTION: Future space exploration missions to distant planetary surfaces will involve communication delays. As a result, spaceflight crews will have limited input from mission control, necessitating higher levels of autonomy. For example, an exploration mission to Mars could involve up to a 15 minute communication delay each way, severely limiting the degree to which mission control could provide timely and relevant information to the spaceflight crew during events in which time is critical. Moreover, this time delay could have detrimental effects on more mundane operations if the ground or crew was waiting on a response before moving to the next step in a routine task. If both ground and spaceflight crew are not provided with training and tools to mitigate the effects of communication delays, performance will likely decrease over the course of a mission as communication delays increase. DISCUSSION: This presentation will highlight both the problems created by communication delays and potential tools for working under conditions of communication delays. The issues and potential solutions presented are largely drawn from a study of communication delay and team performance occurring during the NEEMO 16 underwater habitat mission. During this mission, teams composed of aquanauts and mission control personnel worked under communication delays of varying lengths and were asked to perform time sensitive tasks. The results of this initial study of communication delay, in an environment similar to those that will be faced by astronauts on future exploration missions, will be discussed with respect to the observed effects of communication delays on performance. JF - Aviation, Space, and Environmental Medicine AU - Vessey, W AU - Palinkas, L AU - Leveton, L AD - NASA Johnson Space Center, Houston, TX Y1 - 2013/04// PY - 2013 DA - April 2013 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Health & Safety Science Abstracts KW - Communications KW - Underwater habitats KW - Training KW - Environmental factors KW - O 6030:Oil and Gas Resources KW - H 2000:Transportation KW - Q2 09183:Physics and chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356928437?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=SUPPORTING+TEAMS+AND+INDIVIDUALS+UNDER+CONDITIONS+OF+COMMUNICATION+DELAY+-+LESSONS+LEARNED+FROM+NEEMO+16&rft.au=Vessey%2C+W%3BPalinkas%2C+L%3BLeveton%2C+L&rft.aulast=Vessey&rft.aufirst=W&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=376a&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Underwater habitats; Environmental factors; Communications; Training ER - TY - JOUR T1 - EVALUATION OF CURRENT SPACE MEDICAL CAPABILITY FOR EXPLORATION CLASS SPACE MISSIONS AN - 1356928400; 18013399 AB - INTRODUCTION: The NASA Human Research Program (HRP) has assigned to the Exploration'Medical Capability (ExMC) element the task of identifying and managing medical issues and related operational risks during exploration class missions. ExMC's Exploration Medical System Demonstration (EMSD) is an end-to-end medical system for exploration class missions that will be demonstrated aboard the International Space Station (ISS) in 2016. In preparation for the EMSD, ExMC evaluated of how existing ISS medical resources and newly developed procedures and tools would function on an exploration class mission. The goal was to identify any gaps in capability. METHODS: Five medical scenarios were conducted within a simulated exploration class habitat with crew who executed space flight-relevant medical procedures. Remote guidance of crew was provided by flight controllers via voice/text communication with different communication time delays (5, 50 or 300 sec). Audio/video data were collected to capture 1) communication between the crew themselves and flight controllers and 2) movements made by crew who were executing the procedures. Questionnaire data regarding procedure content and remote guidance performance were also collected. RESULTS: Preliminary review of the audio, video and questionnaire data identified gaps in the current ISS medical capability as it applies to exploration class missions; however, data also show that in some cases that written medical procedures can be effectively executed by minimally-trained caregivers (e.g. non-physician astronaut crew medical officers (CMOs)) with minimal remote guidance from flight controllers. Data also show how newly developed tools enable minimally-trained caregivers to autonomously execute clinical tasks and, subsequently, increase the quality of clinical deliverables. DISCUSSION: These data will act as a baseline as the ExMC constructs its first iteration of the EMSD. The gaps identified during the study will be addressed as the ExMC prepares for the ground-based test of the EMSD in 2014 before the in-flight test in 2016. JF - Aviation, Space, and Environmental Medicine AU - Iv, V Hurst AU - Garcia, K AU - Jain, V AU - Ham, D AU - Menon, A AU - Watkins, S AD - NASA-Johnson Space Center, Houston, TX Y1 - 2013/04// PY - 2013 DA - Apr 2013 SP - 376 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Health & Safety Science Abstracts KW - Communications KW - Reviews KW - Habitat KW - Research programs KW - H 2000:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356928400?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=EVALUATION+OF+CURRENT+SPACE+MEDICAL+CAPABILITY+FOR+EXPLORATION+CLASS+SPACE+MISSIONS&rft.au=Iv%2C+V+Hurst%3BGarcia%2C+K%3BJain%2C+V%3BHam%2C+D%3BMenon%2C+A%3BWatkins%2C+S&rft.aulast=Iv&rft.aufirst=V&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=376&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Communications; Reviews; Habitat; Research programs ER - TY - JOUR T1 - SLEEP AND WORKLOAD FROM SHUTTLE MISSIONS AN - 1356928347; 18013453 AB - INTRODUCTION: Sleep is often reduced and workload is increased during spaceflight, as evidenced by anecdotal reports from ISS astronauts and recent research investigations. A large body of ground-based research demonstrates that sleep loss and work overload negatively affects performance and is associated with health decrements. It is therefore essential to characterize and mitigate sleep and work overload in space. Developing mitigation strategies requires a comprehensive understanding of the factors that affect sleep on orbit. The results of surveys and interviews with astronauts regarding their experiences in flight provide insight as to stressors and countermea-sures, and the relationship between high workload and inadequate sleep. METHODS: In 2009, the NASA Behavioral Health and Performance Element with the Space Medicine Division implemented a study to characterize the subjective sleep experience of US astronauts during Shuttle missions. The study participants were astronauts who have flown Shuttle between 2005 and 2010. A total of 64 astronauts completed both the survey and interview, and an additional 10 astronauts completed the interview only. Participants completed surveys and interviews relating to their personal experience with sleep during Shuttle missions and sleep on Earth, including factors that may inhibit sleep ("stressors") both in space and on Earth; and specific countermeasure strategies they used and their subjective effectiveness. RESULTS: The survey results indicated individual variability exists with regard to sleep in flight. Commonly discussed stressors involved workload and scheduling. This presentation offers a summary of results from the survey and interviews, focusing on the relationship between workload, sleep and well-being and in space, and providing recommendations for mitigating related risks in future missions. DISCUSSION: Mathematical models that predict vulnerable and optimal performance times based on actual work-rest schedules (and other factors) are needed to minimize risk in spaceflight. Additionally, perceived workload can also create stress which can reduce sleep; hence, stress management techniques are recommended. JF - Aviation, Space, and Environmental Medicine AU - Whitmire, A AU - Slack, K AU - Locke, J AU - Leveton, L AD - Wyle / NASA, Webster, TX Y1 - 2013/04// PY - 2013 DA - Apr 2013 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Risk Abstracts; Health & Safety Science Abstracts KW - Mitigation KW - Mathematical models KW - Perception KW - Stress KW - Vulnerability KW - Working conditions KW - H 2000:Transportation KW - R2 23060:Medical and environmental health UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356928347?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=SLEEP+AND+WORKLOAD+FROM+SHUTTLE+MISSIONS&rft.au=Whitmire%2C+A%3BSlack%2C+K%3BLocke%2C+J%3BLeveton%2C+L&rft.aulast=Whitmire&rft.aufirst=A&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=392a&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Mitigation; Mathematical models; Perception; Stress; Vulnerability; Working conditions ER - TY - JOUR T1 - OPERATIONAL DATA ON CREW EXPOSURE TO MILD HYPOBARIC HYPOXIA IN MICROGRAVITY AN - 1356928213; 18013287 AB - INTRODUCTION: To reduce both denitrogenation time and risk of decompression sickness during extravehicular activity in a spacesuit pressurized to 4.3 psia, the option of an intermediate habitat pressure of 8.2 psia with 34% oxygen (O2) has been proposed for NASA's future exploration missions. This atmosphere creates an inspired O2 partial pressure (PIO2) of 128 mmHg, equivalent to breathing air at approximately 4,000 ft (1220 m) altitude. One of the denitrogenation protocols used on the Space Shuttle exposed astronauts to a staged condition of 10.2 psia and 26.5% O2, resulting in a similar mildly hypoxic PIO2 of 127 mmHg. Terrestrial data suggest that this level of hypoxia is acceptable for unimpeded mission operations, but the combined effects of mild hypobaric hypoxia (HH) with microgravity are uncertain. The goal of this study is to identify flight data from the Shuttle program that may aid in clarifying the physiological and health effects of exposure to mild HH in microgravity. METHODS: Three databases were examined at the Johnson Space Center. The Operational Prebreathe Database identified which missions were exposed to the staged condition. The Lifetime Surveillance of Astronaut Health (LSAH) and the Life Sciences Data Archive (LSDA) databases provide medical and physiological data collected during Shuttle missions with and without the staged exposure. RESULTS: A total of 34 Shuttle missions operated at the staged condition. There were 202 days spent at the condition, a total of 1,252 man-days based on crew size. The average exposure duration for a mission was 6 days, the longest being 14 days. DISCUSSION: Exposure history indicates ample time to respond and acclimatize to mild HH under microgravity conditions. Efforts to extract physiological and medical data from the LSAH and LSDA databases are continuing. Statistical analysis will identify any differences in physiologic variables between crewmembers exposed to the staged condition and the control group. JF - Aviation, Space, and Environmental Medicine AU - Thompson, M AU - Klein, J AU - Norcross, J AD - NASA Johnson Space Center, Houston, TX Y1 - 2013/04// PY - 2013 DA - Apr 2013 SP - 340b EP - 3341 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Health & Safety Science Abstracts KW - Oxygen KW - Historical account KW - Altitude KW - Hypoxia KW - Physiology KW - Habitat KW - Space shuttle KW - Atmosphere KW - H 2000:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356928213?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=OPERATIONAL+DATA+ON+CREW+EXPOSURE+TO+MILD+HYPOBARIC+HYPOXIA+IN+MICROGRAVITY&rft.au=Thompson%2C+M%3BKlein%2C+J%3BNorcross%2C+J&rft.aulast=Thompson&rft.aufirst=M&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=340b&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Historical account; Oxygen; Altitude; Hypoxia; Physiology; Space shuttle; Habitat; Atmosphere ER - TY - JOUR T1 - DRUG SHORTAGES: IMPACTS AND NEAR MISSES IN SPACE MEDICINE OPERATIONS AN - 1356928210; 18013189 AB - INTRODUCTION: Drug shortages often occur in health care; however the numbers of medications on the national shortage list have been on the rise for the last decade with an exponential increase over the last few years. In 2010, a reported 196 shortages were experienced throughout the industry compared to a record high of 267 new prescription drug shortages reported in 2011. At their peak, the drug shortages covered a wide spectrum of therapeutic categories, medication strengths and dosage forms. As a result, the human spaceflight program experiences shortages. This discussion will focus on the impacts and near misses of drug shortages within Space Medicine Operations which includes the International Space Station (ISS) medication kits, Star City operations as well as the Direct Return program. METHODS: A comparative review of the shortages experienced from 2009 through 2012 by the JSC Pharmacy and medication needs for Space Medicine Operations was conducted utilizing medication orders and the published drug shortage list. The risks of the impacts and near misses were evaluated as shortages arose. The cause for each of the shortages was investigated and a plan to control each shortage was developed by the JSC Pharmacy team. RESULTS: The largest impacted dosage form was parenteral medications. Special consideration was given to the potential impacts of shortages to the ISS medication kit as a result of training needs, documentation issues and packing challenges. Management of the shortages as a whole will be addressed. DISCUSSION: Techniques for mitigating drug shortages in Space Medicine Operations by the JSC Pharmacy Team will be addressed. JF - Aviation, Space, and Environmental Medicine AU - Bayuse, T AU - Leblanc, C AU - Langford, K AU - Magalhaes, L AD - Wyle Science Technology and Engineering Croup, NASA Johnson Space Center, Houston, TX Y1 - 2013/04// PY - 2013 DA - Apr 2013 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Health & Safety Science Abstracts KW - Mitigation KW - Health care KW - Training KW - Reviews KW - Drugs KW - Urban areas KW - H 2000:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356928210?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=DRUG+SHORTAGES%3A+IMPACTS+AND+NEAR+MISSES+IN+SPACE+MEDICINE+OPERATIONS&rft.au=Bayuse%2C+T%3BLeblanc%2C+C%3BLangford%2C+K%3BMagalhaes%2C+L&rft.aulast=Bayuse&rft.aufirst=T&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=312b&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Mitigation; Health care; Training; Reviews; Drugs; Urban areas ER - TY - JOUR T1 - SPACEFLIGHT AND THE RODENT EYE: WHAT WE HAVE LEARNED FROM SHUTTLE MISSIONS STS-133 AND STS-135 AN - 1356928105; 18013294 AB - INTRODUCTION: This work reports on animal models used to study the effects of the spaceflight environment on' ocular morphology and function. The vision-impairment risk results from the contribution of various spaceflight hazards and involves cellular and molecular mechanisms that cannot be studied unless we have access to retinal tissue. METHODS: Histological and gene expression analyses of retinas collected from mice flown on STS-133 (albino BALB/cJ strain) and STS-135 (pigmented C57BL strain) and from ground control counterparts were performed. RESULTS: In albino mice, 80HdG and caspase-3 immunore-activity increased in the retina at return from flight (R+1) compared to ground controls, decreasing at day 7 (R+7). Flight mice showed evidence of retinal pigment epithelium apoptosis possibly secondary to oxidative damage. [3-amyloid was seen in the nerve fibers at the post-laminar region of the optic nerve in R+7 samples. The co-expression of CFAP in astrocytes and oligodentrocytes in these areas supports the possible mechanical origin probably secondary to intracranial pressure that is transmitted into the nerve. Gene expression of oxidative and cellular stress response was upregulated in the retina of flight samples upon landing and decreased by R+7. These results suggest that reversible molecular damage occurs in the retina of mice exposed to spaceflight and that protective cellular and molecular pathways are induced in the retina in response to these changes. Pigmented mice evidenced higher 80HdG in STS-135 flight samples compared to ground controls. Microarray gene expression analysis pointed to molecular processes related to endoplasmic reticulum and oxidative stress leading to neuronal and glial cells loss. Albino mice were more susceptible to a reduction in the expression of melanopsin and intrinsically photosensitive retinal ganglion cells when exposed to spaceflight for a period of 12 days in low-Earth orbit, suggesting that circadian disruption also may be the result from alterations in the molecular circadian machinery. JF - Aviation, Space, and Environmental Medicine AU - Zanello, S AU - Theriot, C AU - Prospero Ponce, C AU - Chevez-Barrios, P AD - NASA Johnson Space Center, Houston, TX Y1 - 2013/04// PY - 2013 DA - Apr 2013 SP - 343 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Health & Safety Science Abstracts KW - Optics KW - Eye KW - Oxidative stress KW - Machinery KW - Circadian rhythms KW - Animal models KW - Stress KW - Mice KW - Rodents KW - H 2000:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356928105?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=SPACEFLIGHT+AND+THE+RODENT+EYE%3A+WHAT+WE+HAVE+LEARNED+FROM+SHUTTLE+MISSIONS+STS-133+AND+STS-135&rft.au=Zanello%2C+S%3BTheriot%2C+C%3BProspero+Ponce%2C+C%3BChevez-Barrios%2C+P&rft.aulast=Zanello&rft.aufirst=S&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=343&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Optics; Eye; Oxidative stress; Machinery; Animal models; Circadian rhythms; Stress; Mice; Rodents ER - TY - JOUR T1 - LUMBAR PUNCTURE BEFORE, DURING AND AFTER SPACEFLIGHT - APPROACH AND CHALLENGES AN - 1356928040; 18013291 AB - INTRODUCTION: Microgravity-induced cephalad fluid shift leading to increased intracranial pressure (ICP) is currently the leading pathophysiological hypothesis for the VHP syndrome. In-flight ultrasound and postflight MRI have documented signs of elevated ICP, along with direct measures of postflight CSF pressure. Prolonged elevations of ICP have been associated with long-term effects on vision, white matter damage, and cognitive impairment in some terrestrial populations. However, ICP has never been directly measured in humans during microgravity exposures, and without verification of in-flight ICP this etiological hypothesis cannot be ascertained, and accurate countermeasures cannot be developed. Lumbar puncture (LP) is the gold standard method to quantitatively measure ICP in ambulatory patients. While NASA is investigating technologies for noninvasive ICP measurement, these technologies may not be FDA approved and flight-certified for several years, and some of them are qualitative and require calibration with invasive ICP measurements. Consequently, despite concerns associated with invasive procedures, rationale exists to suggest pre- and postflight LP testing, and possibly in-flight testing, for both occupational monitoring and hypothesis-driven research. METHODS: A thorough review of current literature was conducted and subject matter experts were consulted to identify the risk/benefit ratio of conducting LPs on crewmembers. RESULTS: When planning for an LP, aspects that should be considered include microgravity-associated anatomical and physiological changes, use of restraints, platform stability, hand movements/dexterity, Crew Medical Officer (CMO) training, risk of infection, equipment, post-LP headache, bleeding, ultrasound guidance, optimal timing of testing, CSF parameters to be tested and precautions that should be taken to increase safety. DISCUSSION: With flight-certified noninvasive ICP devices currently unavailable, a discussion of the advantages and challenges of invasive measurements is warranted. With careful planning of hardware, techniques, and procedures, safety of LP may be increased. An understanding of the dynamics of ICP pre-, in-, and postflight would allow development of effective mitigation for the VHP syndrome. JF - Aviation, Space, and Environmental Medicine AU - Barr, Y AU - Otto, C AD - University of Texas Medical Branch/NASA Bioastronautics Contract, Houston, TX Y1 - 2013/04// PY - 2013 DA - Apr 2013 SP - 342 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 4 SN - 0095-6562, 0095-6562 KW - Health & Safety Science Abstracts KW - Mitigation KW - Cognitive ability KW - Training KW - Vision KW - Reviews KW - Physiology KW - FDA KW - Infection KW - Technology KW - H 1000:Occupational Safety and Health UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356928040?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=LUMBAR+PUNCTURE+BEFORE%2C+DURING+AND+AFTER+SPACEFLIGHT+-+APPROACH+AND+CHALLENGES&rft.au=Barr%2C+Y%3BOtto%2C+C&rft.aulast=Barr&rft.aufirst=Y&rft.date=2013-04-01&rft.volume=84&rft.issue=4&rft.spage=342&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Mitigation; Vision; Training; Cognitive ability; Reviews; Physiology; FDA; Infection; Technology ER - TY - JOUR T1 - High-velocity collisions from the lunar cataclysm recorded in asteroidal meteorites AN - 1356358792; 2013-043425 AB - The Moon experienced an intense period of impacts about 4 Gyr ago. This cataclysm is thought to have affected the entire inner Solar System and has been constrained by the radiometric dating of lunar samples: 40Ar-39Ar ages reflect the heating and degassing of target rocks by large basin-forming impacts on the Moon. Radiometric dating of meteorites from Vesta and the H-chondrite parent body also shows numerous (super 40) Ar- (super 39) Ar ages between 3.4 and 4.1 Gyr ago, despite a different dynamical context, where impacts typically occur at velocities too low to reset geochronometers. Here we interpret the (super 40) Ar- (super 39) Ar age record in meteorites to reflect unusually high impact velocities exceeding 10 km s (super -1) . Compared with typical impact velocities for main-belt asteroids of about 5 km s (super -1) , these collisions would produce 100-1,000 times more highly heated material by volume. We propose that the (super 40) Ar- (super 39) Ar ages between 3.4 and 4.1 Gyr ago from Vesta, the H-chondrite parent body and the Moon record impacts from numerous main-belt asteroids that were driven onto high-velocity and highly eccentric orbits by the effects of the late migration of the giant planets. We suggest that the bombardment persisted for many hundreds of millions of years and affected most inner Solar System bodies. JF - Nature Geoscience AU - Marchi, S AU - Bottke, W F AU - Cohen, B A AU - Wuennemann, K AU - Kring, D A AU - McSween, H Y AU - De Sanctis, M C AU - O'Brien, D P AU - Schenk, P AU - Raymond, C A AU - Russell, C T Y1 - 2013/04// PY - 2013 DA - April 2013 SP - 303 EP - 307 PB - Nature Publishing Group, London VL - 6 IS - 4 SN - 1752-0894, 1752-0894 KW - ordinary chondrites KW - stony meteorites KW - impact features KW - asteroids KW - orbits KW - planetesimals KW - lunar highlands KW - simulation KW - giant planets KW - eccentricity KW - meteorites KW - dates KW - absolute age KW - velocity KW - Archean KW - algorithms KW - chondrites KW - Hadean KW - Ar/Ar KW - solar system KW - Precambrian KW - asteroid belts KW - Vesta Asteroid KW - Moon KW - H chondrites KW - impacts KW - models KW - planets KW - lunar samples KW - craters KW - Eoarchean KW - 03:Geochronology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356358792?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=High-velocity+collisions+from+the+lunar+cataclysm+recorded+in+asteroidal+meteorites&rft.au=Marchi%2C+S%3BBottke%2C+W+F%3BCohen%2C+B+A%3BWuennemann%2C+K%3BKring%2C+D+A%3BMcSween%2C+H+Y%3BDe+Sanctis%2C+M+C%3BO%27Brien%2C+D+P%3BSchenk%2C+P%3BRaymond%2C+C+A%3BRussell%2C+C+T&rft.aulast=Marchi&rft.aufirst=S&rft.date=2013-04-01&rft.volume=6&rft.issue=4&rft.spage=303&rft.isbn=&rft.btitle=&rft.title=Nature+Geoscience&rft.issn=17520894&rft_id=info:doi/10.1038%2FNGEO1769 L2 - http://www.nature.com/ngeo/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 47 N1 - Document feature - illus. N1 - SuppNotes - Supplemental information/data is available in the online version of this article N1 - Last updated - 2013-05-30 N1 - SubjectsTermNotLitGenreText - absolute age; algorithms; Ar/Ar; Archean; asteroid belts; asteroids; chondrites; craters; dates; eccentricity; Eoarchean; giant planets; H chondrites; Hadean; impact features; impacts; lunar highlands; lunar samples; meteorites; models; Moon; orbits; ordinary chondrites; planetesimals; planets; Precambrian; simulation; solar system; stony meteorites; velocity; Vesta Asteroid DO - http://dx.doi.org/10.1038/NGEO1769 ER - TY - JOUR T1 - An initial meteoroid stream survey in the Southern Hemisphere using the Southern Argentina Agile Meteor Radar (SAAMER) AN - 1351600937; 2013-041343 AB - We present in this manuscript a 4 year survey of meteor shower radiants utilizing the Southern Argentina Agile Meteor Radar (SAAMER). SAAMER, which operates at the southern most region of South America, is a new generation SKiYMET system designed with significant differences from typical meteor radars including high transmitted power and an 8-antenna transmitting array enabling large detected rates at low zenith angles. We applied the statistical methodology developed by Jones and Jones (Jones, J., Jones, W. [2006]. Month. Not. R. Astron. Soc. 367, 1050-1056) to the data collected each day and compiled the results into 1 composite representative year at 1 degrees resolution in Solar Longitude. We then search for enhancements in the activity which last for at least 3 days and evolve temporally as is expected from a meteor shower. Using this methodology, we have identified in our data 32 shower radiants, two of which were not part of the IAU commission 22 meteor shower working list. Recently, SAAMER's capabilities were enhanced by adding two remote stations to receive meteor forward scatter signals from meteor trails and thus enable the determination of meteoroid orbital parameters. SAAMER started recording orbits in January 2012 and future surveys will focus on the search for unknown meteor streams, in particular in the southern ecliptic sky. JF - Icarus AU - Janches, Diego AU - Hormaechea, J L AU - Brunini, C AU - Hocking, W AU - Fritts, D C Y1 - 2013/04// PY - 2013 DA - April 2013 SP - 677 EP - 683 PB - Elsevier, New York, NY VL - 223 IS - 2 SN - 0019-1035, 0019-1035 KW - Southern Hemisphere KW - meteors KW - SAAMER KW - detection KW - Southern Argentina Agile Meteor Radar KW - orbits KW - meteor showers KW - surveys KW - radar methods KW - SKiYMET system KW - meteoroids KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1351600937?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=An+initial+meteoroid+stream+survey+in+the+Southern+Hemisphere+using+the+Southern+Argentina+Agile+Meteor+Radar+%28SAAMER%29&rft.au=Janches%2C+Diego%3BHormaechea%2C+J+L%3BBrunini%2C+C%3BHocking%2C+W%3BFritts%2C+D+C&rft.aulast=Janches&rft.aufirst=Diego&rft.date=2013-04-01&rft.volume=223&rft.issue=2&rft.spage=677&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2012.12.018 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 25 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2013-05-16 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - detection; meteor showers; meteoroids; meteors; orbits; radar methods; SAAMER; SKiYMET system; Southern Argentina Agile Meteor Radar; Southern Hemisphere; surveys DO - http://dx.doi.org/10.1016/j.icarus.2012.12.018 ER - TY - JOUR T1 - Black rain; the burial of the Galilean satellites in irregular satellite debris AN - 1351600175; 2013-041350 AB - Irregular satellites are dormant comet-like bodies that reside on distant prograde and retrograde orbits around the giant planets. They are likely to be captured objects. Dynamical modeling work indicates they may have been caught during a violent reshuffling of the giant planets approximately 4 Gy ago (Ga) as described by the so-called Nice model. According to this scenario, giant planet migration scattered tens of Earth masses of comet-like bodies throughout the Solar System, with some comets finding themselves near giant planets experiencing mutual encounters. In these cases, gravitational perturbations between the giant planets were often sufficient to capture the comet-like bodies onto irregular satellite-like orbits via three-body reactions. Modeling work suggests these events led to the capture of on the order of approximately 0.001 lunar masses of comet-like objects on isotropic orbits around the giant planets. Roughly half of the population was readily lost by interactions with the Kozai resonance. The remaining half found themselves on orbits consistent with the known irregular satellites. From there, the bodies experienced substantial collisional evolution, enough to grind themselves down to their current low-mass states. Here we explore the fate of the putative irregular satellite debris in the Jupiter system. Pulverized by collisions, we hypothesize that the carbonaceous chondrite-like material was beaten into small enough particles that it could be driven toward Jupiter by Poynting-Robertson (P-R) drag forces. Assuming its mass distribution was dominated by D > 50 mu m particles, we find that >40% ended up striking the Galilean satellites. The majority were swept up by Callisto, with a factor of 3-4 and 20-30 fewer particles reaching Ganymede and Europa/Io, respectively. Collision evolution models indicate most of this material arrived about 4 Ga, but some is still arriving today. We predict that Callisto, Ganymede, Europa, and Io were buried about 4 Ga by approximately 120-140 m, 25-30 m, 7-15 m, and 7-8 m of dark debris, respectively. The first two values are consistent with observations of the deepest dark lag deposits found on the most ancient terrains of Callisto and Ganymede. The rest of the debris was likely worked into the crusts of these worlds by geologic and impact processes. This suggests the debris is a plausible source of the dark lag material found in Europa's low-lying crevices. More speculatively, it is conceivable that the accreted dark particles were a significant source of organic material to Europa's subsurface ocean. JF - Icarus AU - Bottke, William F AU - Vokrouhlicky, David AU - Nesvorny, David AU - Moore, Jeffrey M Y1 - 2013/04// PY - 2013 DA - April 2013 SP - 775 EP - 795 PB - Elsevier, New York, NY VL - 223 IS - 2 SN - 0019-1035, 0019-1035 KW - albedo KW - icy satellites KW - dark material KW - accretion KW - Europa Satellite KW - orbits KW - Jupiter KW - Ganymede Satellite KW - Io Satellite KW - Galilean satellites KW - burial KW - giant planets KW - planets KW - debris KW - comets KW - Callisto Satellite KW - mixing KW - Poynting-Robertson drag KW - surface features KW - subsurface oceans KW - outer planets KW - satellites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1351600175?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Black+rain%3B+the+burial+of+the+Galilean+satellites+in+irregular+satellite+debris&rft.au=Bottke%2C+William+F%3BVokrouhlicky%2C+David%3BNesvorny%2C+David%3BMoore%2C+Jeffrey+M&rft.aulast=Bottke&rft.aufirst=William&rft.date=2013-04-01&rft.volume=223&rft.issue=2&rft.spage=775&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2013.01.008 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 110 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2013-07-18 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - accretion; albedo; burial; Callisto Satellite; comets; dark material; debris; Europa Satellite; Galilean satellites; Ganymede Satellite; giant planets; icy satellites; Io Satellite; Jupiter; mixing; orbits; outer planets; planets; Poynting-Robertson drag; satellites; subsurface oceans; surface features DO - http://dx.doi.org/10.1016/j.icarus.2013.01.008 ER - TY - JOUR T1 - Impact of Sun-Synchronous Diurnal Sampling on Tropical TOA Flux Interannual Variability and Trends AN - 1348485370; 17892179 AB - Satellite observations of the earth's radiation budget (ERB) are a critical component of the climate observing system. Recent observations have been made from sun-synchronous orbits, which provide excellent spatial coverage with global measurements twice daily but do not resolve the full diurnal cycle. Previous investigations show that significant errors can occur in time-averaged energy budgets from sun-synchronous orbits if diurnal variations are ignored. However, the impact of incomplete diurnal sampling on top-of-atmosphere (TOA) flux variability and trends has received less attention. A total of 68 months of 3-hourly tropical outgoing longwave radiation (OLR) and reflected shortwave radiation (RSW) fluxes from the Clouds and the Earth's Radiant Energy System (CERES) synoptic (SYN) data product is used to examine the impact of incomplete diurnal sampling on TOA flux variability. Tropical OLR and RSW interannual variability and trends derived from sun-synchronous time sampling consistent with the Terra satellite from 2000 to 2005 show no statistically significant differences at the 95% confidence level with those obtained at 3-hourly time sampling at both 1 degree 1 degree and 10 degree 10 degree regional scales, as well as for tropical means. Monthly, 3-hourly OLR composite anomalies are decomposed into diurnally uniform and diurnal cycle shape change contributions to explain the impact of sampling on observed TOA flux variability. Diurnally uniform contributions to OLR variability account for more than 80% of interannual OLR variability at 1 degree 1 degree spatial scales. Diurnal cycle shape variations are most important in equatorial land regions, contributing up to 50% to OLR variability over Africa. At spatial scales of 10 degree 10 degree or larger, OLR variance contributions from diurnal cycle shape changes remain smaller than 20%. JF - Journal of Climate AU - Taylor, Patrick C AU - Loeb, Norman G AD - Climate Science Branch, NASA Langley Research Center, Hampton, Virginia Y1 - 2013/04// PY - 2013 DA - April 2013 SP - 2184 EP - 2191 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 26 IS - 7 SN - 0894-8755, 0894-8755 KW - Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Remote Sensing KW - Outgoing long-wave radiation KW - Variability KW - Climate change KW - Statistical analysis KW - Radiation budget KW - Radiation KW - Asteroids KW - Sampling KW - Satellite Technology KW - Diurnal variations KW - Climates KW - Energy budget KW - Ecosystem disturbance KW - Clouds KW - Shape KW - Interannual variability KW - Satellite data KW - Tropical environment KW - Africa KW - Fluctuations KW - AQ 00001:Water Resources and Supplies KW - SW 5010:Network design KW - Q2 09387:Navigation KW - M2 551.58:Climatology (551.58) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1348485370?accountid=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=Impact+of+Sun-Synchronous+Diurnal+Sampling+on+Tropical+TOA+Flux+Interannual+Variability+and+Trends&rft.au=Taylor%2C+Patrick+C%3BLoeb%2C+Norman+G&rft.aulast=Taylor&rft.aufirst=Patrick&rft.date=2013-04-01&rft.volume=26&rft.issue=7&rft.spage=2184&rft.isbn=&rft.btitle=&rft.title=Journal+of+Climate&rft.issn=08948755&rft_id=info:doi/10.1175%2FJCLI-D-12-00416.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Number of references - 27 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Diurnal variations; Tropical environment; Climate change; Sampling; Ecosystem disturbance; Energy budget; Clouds; Outgoing long-wave radiation; Radiation budget; Satellite data; Interannual variability; Asteroids; Radiation; Statistical analysis; Remote Sensing; Satellite Technology; Shape; Variability; Climates; Fluctuations; Africa DO - http://dx.doi.org/10.1175/JCLI-D-12-00416.1 ER - TY - JOUR T1 - Redox systematics of Martian magmas with implications for magnetite stability AN - 1347457478; 2013-036654 AB - Magnetite is commonly found at sites on Mars explored by robotic spacecraft, yet is rare in martian meteorites and in experimental studies of martian magma compositions. Iron redox systematics of the high-FeO shergottitic liquids are poorly known, yet have a fundamental control on stability of phases such as magnetite, ilmenite, and pyroxenes. We undertook experiments to constrain the Fe (super 3+) /Sigma Fe in high-FeO (15-22 wt%) glasses as a function of f (sub O2) , melt P (sub 2) O (sub 5) , temperature and pressure. We also performed a series of sub-liquidus experiments between 1100 and 1000 degrees C and FMQ+0.5 to FMQ-1 to define magnetite stability. Run products were analyzed for Fe (super 3+) and Fe (super 2+) by Mossbauer spectroscopy and micro-X-ray absorption near edge structure (micro-XANES) spectroscopy. One bar liquids equilibrated at FMQ-3 to FMQ+3 show a much lower Fe (super 3+) /Sigma Fe than terrestrial basalts at the same conditions. As melt P (sub 2) O (sub 5) contents increase from 0 to 3 wt% (at fixed pressure, temperature, and f (sub O2) ), Fe (super 3+) /Sigma Fe decreases from 0.07 to 0.05, but this is within error on the measurements. Temperature increases between 1200 and 1500 degrees C cause little to no variation in Fe (super 3+) /Sigma Fe. Pressure increases from 1 to 4 GPa cause a 0.06 decrease in Fe (super 3+) /Sigma Fe. The trends with pressure and temperature are in agreement with results of previous studies. Combining our new series of data allows derivation of an expression to calculate Fe (super 3+) /Fe (super 2+) for high-FeO melts such as martian magmas. ln(X (sub Fe3+) /X (sub Fe2+) )=a ln f (sub O2) +b/T+cP/T+dx (sub FeO) +ew (sub Al2O3) +fX (sub CaO) +gX (sub Na2O) +hX (sub K2O) +iX (sub P2O5) +j This expression can be used to show that decompressed melts become slightly more oxidized at the surface (compared to 4 GPa). Magnetite stability is suppressed by the lower Fe (super 3+) /Fe (super 2+) of the high-FeO melts. Magnetite stability is a function of Fe (sub 2) O (sub 3) and temperature and is stable approximately 50 degrees C lower than typical terrestrial basalt. Difficulty in producing magnetite as a liquidus phase in magmatic systems suggests either that many martian basalts are more oxidized than FMQ (but not represented among meteorite collections), that the titano-magnetite only forms upon cooling below approximately 1000 degrees C at FMQ, or that the magnetite has a secondary origin. JF - American Mineralogist AU - Righter, Kevin AU - Danielson, Lisa R AU - Pando, Kellye AU - Morris, Richard V AU - Graff, Trevor G AU - Agresti, David G AU - Martin, Audrey M AU - Sutton, Stephen R AU - Newville, Matt AU - Lanzirotti, Antonio Y1 - 2013/04// PY - 2013 DA - April 2013 SP - 616 EP - 628 PB - Mineralogical Society of America, Washington, DC VL - 98 IS - 4 SN - 0003-004X, 0003-004X KW - silicates KW - ilmenite KW - volcanic rocks KW - stony meteorites KW - Martian meteorites KW - igneous rocks KW - stability KW - Mars KW - titanomagnetite KW - XANES spectra KW - SNC Meteorites KW - meteorites KW - pyroxene group KW - melting KW - basalts KW - oxides KW - spectra KW - Eh KW - Mossbauer spectra KW - chain silicates KW - experimental studies KW - achondrites KW - X-ray spectra KW - terrestrial planets KW - planets KW - X-ray data KW - shergottite KW - magmas KW - magnetite KW - 04:Extraterrestrial geology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1347457478?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Redox+systematics+of+Martian+magmas+with+implications+for+magnetite+stability&rft.au=Righter%2C+Kevin%3BDanielson%2C+Lisa+R%3BPando%2C+Kellye%3BMorris%2C+Richard+V%3BGraff%2C+Trevor+G%3BAgresti%2C+David+G%3BMartin%2C+Audrey+M%3BSutton%2C+Stephen+R%3BNewville%2C+Matt%3BLanzirotti%2C+Antonio&rft.aulast=Righter&rft.aufirst=Kevin&rft.date=2013-04-01&rft.volume=98&rft.issue=4&rft.spage=616&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam.2013.4251 L2 - http://ammin.geoscienceworld.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2013-01-01 N1 - Number of references - 71 N1 - PubXState - DC N1 - Document feature - illus. incl. 7 tables N1 - Last updated - 2013-05-02 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - achondrites; basalts; chain silicates; Eh; experimental studies; igneous rocks; ilmenite; magmas; magnetite; Mars; Martian meteorites; melting; meteorites; Mossbauer spectra; oxides; planets; pyroxene group; shergottite; silicates; SNC Meteorites; spectra; stability; stony meteorites; terrestrial planets; titanomagnetite; volcanic rocks; X-ray data; X-ray spectra; XANES spectra DO - http://dx.doi.org/10.2138/am.2013.4251 ER - TY - JOUR T1 - Anoxic carbon flux in photosynthetic microbial mats as revealed by metatranscriptomics AN - 1323811682; 17803810 AB - Photosynthetic microbial mats possess extraordinary phylogenetic and functional diversity that makes linking specific pathways with individual microbial populations a daunting task. Close metabolic and spatial relationships between Cyanobacteria and Chloroflexi have previously been observed in diverse microbial mats. Here, we report that an expressed metabolic pathway for the anoxic catabolism of photosynthate involving Cyanobacteria and Chloroflexi in microbial mats can be reconstructed through metatranscriptomic sequencing of mats collected at Elkhorn Slough, Monterey Bay, CA, USA. In this reconstruction, Microcoleus spp., the most abundant cyanobacterial group in the mats, ferment photosynthate to organic acids, CO sub(2) and H sub(2) through multiple pathways, and an uncultivated lineage of the Chloroflexi take up these organic acids to store carbon as polyhydroxyalkanoates. The metabolic reconstruction is consistent with metabolite measurements and single cell microbial imaging with fluorescence in situ hybridization and NanoSIMS. JF - ISME Journal AU - Burow, Luke C AU - Woebken, Dagmar AU - Marshall, Ian PG AU - Lindquist, Erika A AU - Bebout, Brad M AU - Prufert-Bebout, Leslie AU - Hoehler, Tori M AU - Tringe, Susannah G AU - Pett-Ridge, Jennifer AU - Weber, Peter K AU - Spormann, Alfred M AU - Singer, Steven W AD - 1] Departments of Chemical Engineering and Civil and Environmental Engineering, Stanford University, Stanford, CA, USA [2] Exobiology Branch, NASA Ames Research Center, Moffett Field, CA, USA Y1 - 2013/04// PY - 2013 DA - Apr 2013 SP - 817 EP - 829 PB - Nature Publishing Group, The Macmillan Building London N1 9XW United Kingdom VL - 7 IS - 4 SN - 1751-7362, 1751-7362 KW - Microbiology Abstracts A: Industrial & Applied Microbiology KW - Carbon KW - Carbon dioxide KW - Fluorescence in situ hybridization KW - Metabolic pathways KW - Metabolites KW - Microbial mats KW - Photosynthates KW - Phylogeny KW - Polyhydroxyalkanoic acid KW - imaging KW - organic acids KW - Cyanobacteria KW - Microcoleus KW - A 01310:Products of Microorganisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1323811682?accountid=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=Anoxic+carbon+flux+in+photosynthetic+microbial+mats+as+revealed+by+metatranscriptomics&rft.au=Burow%2C+Luke+C%3BWoebken%2C+Dagmar%3BMarshall%2C+Ian+PG%3BLindquist%2C+Erika+A%3BBebout%2C+Brad+M%3BPrufert-Bebout%2C+Leslie%3BHoehler%2C+Tori+M%3BTringe%2C+Susannah+G%3BPett-Ridge%2C+Jennifer%3BWeber%2C+Peter+K%3BSpormann%2C+Alfred+M%3BSinger%2C+Steven+W&rft.aulast=Burow&rft.aufirst=Luke&rft.date=2013-04-01&rft.volume=7&rft.issue=4&rft.spage=817&rft.isbn=&rft.btitle=&rft.title=ISME+Journal&rft.issn=17517362&rft_id=info:doi/10.1038%2Fismej.2012.150 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-04-01 N1 - Last updated - 2013-04-05 N1 - SubjectsTermNotLitGenreText - Phylogeny; organic acids; Carbon; Metabolic pathways; Metabolites; Polyhydroxyalkanoic acid; Carbon dioxide; Photosynthates; imaging; Fluorescence in situ hybridization; Microbial mats; Cyanobacteria; Microcoleus DO - http://dx.doi.org/10.1038/ismej.2012.150 ER - TY - JOUR T1 - Dust and biological aerosols from the Sahara and Asia influence precipitation in the Western U.S. AN - 1356359925; 2013-044316 AB - Winter storms in California's Sierra Nevada increase seasonal snowpack and provide critical water resources and hydropower for the state. Thus, the mechanisms influencing precipitation in this region have been the subject of research for decades. Previous studies suggest Asian dust enhances cloud ice and precipitation, whereas few studies consider biological aerosols as an important global source of ice nuclei (IN). Here, we show that dust and biological aerosols transported from as far as the Sahara were present in glaciated high-altitude clouds coincident with elevated IN concentrations and ice-induced precipitation. This study presents the first direct cloud and precipitation measurements showing that Saharan and Asian dust and biological aerosols probably serve as IN and play an important role in orographic precipitation processes over the Western United States. JF - Science AU - Creamean, Jessie M AU - Suski, Kaitlyn J AU - Rosenfeld, Daniel AU - Cazorla, Alberto AU - DeMott, Paul J AU - Sullivan, Ryan C AU - White, Allen B AU - Ralph, F Martin AU - Minnis, Patrick AU - Comstock, Jennifer M AU - Tomlinson, Jason M AU - Prather, Kimberly A Y1 - 2013/03/29/ PY - 2013 DA - 2013 Mar 29 SP - 1572 EP - 1578 PB - American Association for the Advancement of Science, Washington, DC VL - 339 IS - 6127 SN - 0036-8075, 0036-8075 KW - United States KW - Sierra Nevada KW - clouds KW - clastic sediments KW - atmospheric precipitation KW - California KW - provenance KW - transport KW - ice nuclei KW - Western U.S. KW - dust KW - sediments KW - Africa KW - aerosols KW - Sahara KW - Asia KW - meteorology KW - 06A:Sedimentary petrology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1356359925?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Dust+and+biological+aerosols+from+the+Sahara+and+Asia+influence+precipitation+in+the+Western+U.S.&rft.au=Creamean%2C+Jessie+M%3BSuski%2C+Kaitlyn+J%3BRosenfeld%2C+Daniel%3BCazorla%2C+Alberto%3BDeMott%2C+Paul+J%3BSullivan%2C+Ryan+C%3BWhite%2C+Allen+B%3BRalph%2C+F+Martin%3BMinnis%2C+Patrick%3BComstock%2C+Jennifer+M%3BTomlinson%2C+Jason+M%3BPrather%2C+Kimberly+A&rft.aulast=Creamean&rft.aufirst=Jessie&rft.date=2013-03-29&rft.volume=339&rft.issue=6127&rft.spage=1572&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.1227279 L2 - http://www.sciencemag.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 44 N1 - PubXState - DC N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2013-05-30 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - aerosols; Africa; Asia; atmospheric precipitation; California; clastic sediments; clouds; dust; ice nuclei; meteorology; provenance; Sahara; sediments; Sierra Nevada; transport; United States; Western U.S. DO - http://dx.doi.org/10.1126/science.1227279 ER - TY - NEWS T1 - Sunset Comet AN - 1319842535 JF - UPI Space Daily AU - Tony Philips for NASA Science News Y1 - 2013/03/27/ PY - 2013 DA - 2013 Mar 27 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1319842535?accountid=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=Sunset+Comet&rft.au=Tony+Philips+for+NASA+Science+News&rft.aulast=Tony+Philips+for+NASA+Science+News&rft.aufirst=&rft.date=2013-03-27&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 - 2013-03-27 ER - TY - JOUR T1 - Explicit filtering to obtain grid-spacing-independent and discretization-order-independent large-eddy simulation of two-phase volumetrically dilute flow with evaporation AN - 1534819084; 19926872 AB - Predictions from conventional large-eddy simulation (LES) are known to be grid-spacing and spatial-discretization-order dependent. In a previous article (Radhakrishnan & Bellan, J. Fluid Mech., vol. 697, 2012a, pp. 399-435), we reformulated LES for compressible single-phase flow by explicitly filtering the nonlinear terms in the governing equations so as to render the solution grid-spacing and discretization-order independent. Having shown in Radhakrishnan & Bellan (2012a) that the reformulated LES, which we call EFLES, yields grid-spacing-independent and discretization-order-independent solutions for compressible single-phase flow, we explore here the potential of EFLES for evaporating two-phase flow where the small scales have an additional origin compared to single-phase flow. Thus, we created a database through direct numerical simulation (DNS) that when filtered serves as a template for comparisons with both conventional LES and EFLES. Both conventional LES and EFLES are conducted with two gas-phase SGS models; the drop-field SGS model is the same in all these simulations. For EFLES, we also compared simulations performed with the same SGS model for the gas phase but two different drop-field SGS models. Moreover, to elucidate the influence of explicit filtering versus gas-phase SGS modelling, EFLES with two drop-field SGS models but no gas-phase SGS models were conducted. The results from all these simulations were compared to those from DNS and from the filtered DNS (FDNS). Similar to the single-phase flow findings, the conventional LES method yields solutions which are both grid-spacing and spatial-discretization-order dependent. The EFLES solutions are found to be grid-spacing independent for sufficiently large filter-width to grid-spacing ratio, although for the highest discretization order this ratio is larger in the two-phase flow compared to the single-phase flow. For a sufficiently fine grid, the results are also discretization-order independent. The absence of a gas-phase SGS model leads to build-up of energy near the filter cut-off indicating that while explicit filtering removes energy above the filter width, it does not provide the correct dissipation at the scales smaller than this width. A wider viewpoint leads to the conclusion that although the minimum filter-width to grid-spacing ratio necessary to obtain the unique grid-independent solution might be different for various discretization-order schemes, the grid-independent solution thus obtained is also discretization-order independent. JF - Journal of Fluid Mechanics AU - Radhakrishnan, Senthilkumaran AU - Bellan, Josette AD - Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA, josette.bellan@jpl.nasa.gov Y1 - 2013/03/25/ PY - 2013 DA - 2013 Mar 25 SP - 230 EP - 267 PB - Cambridge University Press, The Edinburgh Building, Cambridge CB2 2RU United Kingdom VL - 719 SN - 0022-1120, 0022-1120 KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Prediction KW - Marine KW - Mathematical models KW - Evaporation KW - Simulation KW - Oceanic eddies KW - Templates KW - Large eddy simulations KW - Multiphase Flow KW - Fluid Mechanics KW - Model Studies KW - Filters KW - Fluid mechanics KW - Databases KW - Yield KW - Numerical simulations KW - Q2 09169:Fluid mechanics KW - SW 6010:Structures KW - M2 556.13:Evaporation/Evapotranspiration (556.13) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1534819084?accountid=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=Explicit+filtering+to+obtain+grid-spacing-independent+and+discretization-order-independent+large-eddy+simulation+of+two-phase+volumetrically+dilute+flow+with+evaporation&rft.au=Radhakrishnan%2C+Senthilkumaran%3BBellan%2C+Josette&rft.aulast=Radhakrishnan&rft.aufirst=Senthilkumaran&rft.date=2013-03-25&rft.volume=719&rft.issue=&rft.spage=230&rft.isbn=&rft.btitle=&rft.title=Journal+of+Fluid+Mechanics&rft.issn=00221120&rft_id=info:doi/10.1017%2Fjfm.2013.3 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-06-01 N1 - Last updated - 2016-09-29 N1 - SubjectsTermNotLitGenreText - Fluid mechanics; Mathematical models; Evaporation; Simulation; Oceanic eddies; Templates; Numerical simulations; Large eddy simulations; Prediction; Filters; Databases; Yield; Fluid Mechanics; Multiphase Flow; Model Studies; Marine DO - http://dx.doi.org/10.1017/jfm.2013.3 ER - TY - JOUR T1 - The global 3-D distribution of tropospheric aerosols as characterized by CALIOP AN - 1348485423; 17892699 AB - The CALIOP lidar, carried on the CALIPSO satellite, has been acquiring global atmospheric profiles since June 2006. This dataset now offers the opportunity to characterize the global 3-D distribution of aerosol as well as seasonal and interannual variations, and confront aerosol models with observations in a way that has not been possible before. With that goal in mind, a monthly global gridded dataset of daytime and nighttime aerosol extinction profiles has been constructed, available as a Level 3 aerosol product. Averaged aerosol profiles for cloud-free and all-sky conditions are reported separately. This 6-yr dataset characterizes the global 3-dimensional distribution of tropospheric aerosol. Vertical distributions are seen to vary with season, as both source strengths and transport mechanisms vary. In most regions, clear-sky and all-sky mean aerosol profiles are found to be quite similar, implying a lack of correlation between high semi-transparent cloud and aerosol in the lower troposphere. An initial evaluation of the accuracy of the aerosol extinction profiles is presented. Detection limitations and the representivity of aerosol profiles in the upper troposphere are of particular concern. While results are preliminary, we present evidence that the monthly-mean CALIOP aerosol profiles provide quantitative characterization of elevated aerosol layers in major transport pathways. Aerosol extinction in the free troposphere in clean conditions, where the true aerosol extinction is typically 0.001 km super(-1) or less, is generally underestimated, however. The work described here forms an initial global 3-D aerosol climatology which we plan to extend and improve over time. JF - Atmospheric Chemistry and Physics AU - Winker, D M AU - Tackett, J L AU - Getzewich, B J AU - Liu, Z AU - Vaughan, MA AU - Rogers, R R AD - NASA Langley Research Center, MS/475,Hampton, VA, USA Y1 - 2013/03/25/ PY - 2013 DA - 2013 Mar 25 SP - 3345 EP - 3361 PB - European Geophysical Society, Max-Planck-Str. 13 Katlenburg-Lindau Germany VL - 13 IS - 6 SN - 1680-7316, 1680-7316 KW - Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Evaluation KW - Seasonal variability KW - Climatology KW - Atmospheric Chemistry KW - Vertical distribution KW - Aerosols KW - Seasonal Distribution KW - Aerosols-cloud condensation nuclei relationships KW - Aerosol extinction KW - Vertical Distribution KW - Aerosols-cloud relationships KW - Troposphere KW - Model Studies KW - Clouds KW - Aerosol layers KW - Interannual variability KW - Profiles KW - Atmospheric chemistry KW - LIDAR KW - M2 551.510.42:Air Pollution (551.510.42) KW - Q2 09188:Atmospheric chemistry KW - SW 5080:Evaluation, processing and publication KW - AQ 00005:Underground Services and Water Use UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1348485423?accountid=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+Chemistry+and+Physics&rft.atitle=The+global+3-D+distribution+of+tropospheric+aerosols+as+characterized+by+CALIOP&rft.au=Winker%2C+D+M%3BTackett%2C+J+L%3BGetzewich%2C+B+J%3BLiu%2C+Z%3BVaughan%2C+MA%3BRogers%2C+R+R&rft.aulast=Winker&rft.aufirst=D&rft.date=2013-03-25&rft.volume=13&rft.issue=6&rft.spage=3345&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Chemistry+and+Physics&rft.issn=16807316&rft_id=info:doi/10.5194%2Facp-13-3345-2013 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2016-04-29 N1 - SubjectsTermNotLitGenreText - Vertical distribution; Aerosols; Atmospheric chemistry; Troposphere; Climatology; LIDAR; Aerosol layers; Clouds; Interannual variability; Aerosol extinction; Aerosols-cloud condensation nuclei relationships; Aerosols-cloud relationships; Seasonal variability; Atmospheric Chemistry; Evaluation; Seasonal Distribution; Profiles; Vertical Distribution; Model Studies DO - http://dx.doi.org/10.5194/acp-13-3345-2013 ER - TY - NEWS T1 - Amplified Greenhouse Effect Shifts North's Growing Seasons AN - 1319819892 JF - UPI Space Daily AU - Kathryn Hansen for NASA Earth Science News Y1 - 2013/03/25/ PY - 2013 DA - 2013 Mar 25 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1319819892?accountid=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=Amplified+Greenhouse+Effect+Shifts+North%27s+Growing+Seasons&rft.au=Kathryn+Hansen+for+NASA+Earth+Science+News&rft.aulast=Kathryn+Hansen+for+NASA+Earth+Science+News&rft.aufirst=&rft.date=2013-03-25&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 - 2013-03-27 ER - TY - NEWS T1 - NASA Pinpoints Causes of 2011 Arctic Ozone Hole AN - 1319073354 JF - UPI Space Daily AU - Maria-Jose Vinas for NASA's Earth Science News Y1 - 2013/03/24/ PY - 2013 DA - 2013 Mar 24 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1319073354?accountid=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+Pinpoints+Causes+of+2011+Arctic+Ozone+Hole&rft.au=Maria-Jose+Vinas+for+NASA%27s+Earth+Science+News&rft.aulast=Maria-Jose+Vinas+for+NASA%27s+Earth+Science+News&rft.aufirst=&rft.date=2013-03-24&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 - 2013-03-24 ER - TY - NEWS T1 - Solar Wind Energy Source Discovered AN - 1318545703 JF - UPI Space Daily AU - Dr. Tony Phillips for NASA Science News Y1 - 2013/03/21/ PY - 2013 DA - 2013 Mar 21 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1318545703?accountid=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=Solar+Wind+Energy+Source+Discovered&rft.au=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2013-03-21&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 - 2013-03-21 ER - TY - NEWS T1 - It's only natural: Lawrence Livermore helps find link to arsenic-contaminated groundwater AN - 1318545698 JF - UPI Space Daily AU - Dr. Tony Phillips for NASA Science News Y1 - 2013/03/21/ PY - 2013 DA - 2013 Mar 21 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1318545698?accountid=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=It%27s+only+natural%3A+Lawrence+Livermore+helps+find+link+to+arsenic-contaminated+groundwater&rft.au=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2013-03-21&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 - 2013-03-21 ER - TY - JOUR T1 - Absorption efficiencies of forsterite; I, Discrete dipole approximation explorations in grain shape and size AN - 1618131580; 2014-084019 AB - We compute the absorption efficiency (Q (sub abs) ) of forsterite using the discrete dipole approximation in order to identify and describe what characteristics of crystal grain shape and size are important to the shape, peak location, and relative strength of spectral features in the 8-40 mu m wavelength range. Using the DDSCAT code, we compute Q (sub abs) for non-spherical polyhedral grain shapes with a (sub eff) = 0.1 mu m. The shape characteristics identified are (1) elongation/reduction along one of three crystallographic axes; (2) asymmetry, such that all three crystallographic axes are of different lengths; and (3) the presence of crystalline faces that are not parallel to a specific crystallographic axis, e.g., non-rectangular prisms and (di)pyramids. Elongation/reduction dominates the locations and shapes of spectral features near 10, 11, 16, 23.5, 27, and 33.5 mu m, while asymmetry and tips are secondary shape effects. Increasing grain sizes (0.1-1.0 mu m) shifts the 10 and 11 mu m features systematically toward longer wavelengths and relative to the 11 mu m feature increases the strengths and slightly broadens the longer wavelength features. Seven spectral shape classes are established for crystallographic a-, b-, and c-axes and include columnar and platelet shapes plus non-elongated or equant grain shapes. The spectral shape classes and the effects of grain size have practical application in identifying or excluding columnar, platelet, or equant forsterite grain shapes in astrophysical environs. Identification of the shape characteristics of forsterite from 8 to 40 mu m spectra provides a potential means to probe the temperatures at which forsterite formed. Copyright (Copyright) 2013. The American Astronomical Society. All rights reserved. JF - The Astrophysical Journal AU - Lindsay, Sean S AU - Wooden, Diane H AU - Harker, David E AU - Kelley, Michael S AU - Woodward, Charles E AU - Murphy, Jim R Y1 - 2013/03/20/ PY - 2013 DA - 2013 Mar 20 EP - Paper no 54 PB - IOP Publishing for American Astronomical Society, Bristol VL - 766 IS - 1 SN - 0004-637X, 0004-637X KW - silicates KW - structural analysis KW - olivine group KW - crystal structure KW - size KW - preferred orientation KW - forsterite KW - wavelength KW - nesosilicates KW - morphology KW - absorption KW - infrared spectroscopy KW - orthosilicates KW - discrete dipole approximation KW - symmetry KW - spectroscopy KW - 01B:Mineralogy of silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1618131580?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+Astrophysical+Journal&rft.atitle=Absorption+efficiencies+of+forsterite%3B+I%2C+Discrete+dipole+approximation+explorations+in+grain+shape+and+size&rft.au=Lindsay%2C+Sean+S%3BWooden%2C+Diane+H%3BHarker%2C+David+E%3BKelley%2C+Michael+S%3BWoodward%2C+Charles+E%3BMurphy%2C+Jim+R&rft.aulast=Lindsay&rft.aufirst=Sean&rft.date=2013-03-20&rft.volume=766&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%2F766%2F1%2F54 L2 - http://iopscience.iop.org/0004-637X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data supplied by IOP Publishing Ltd., London, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 86 N1 - Document feature - illus. incl. 2 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-10-30 N1 - SubjectsTermNotLitGenreText - absorption; crystal structure; discrete dipole approximation; forsterite; infrared spectroscopy; morphology; nesosilicates; olivine group; orthosilicates; preferred orientation; silicates; size; spectroscopy; structural analysis; symmetry; wavelength DO - http://dx.doi.org/10.1088/0004-637X/766/1/54 ER - TY - CPAPER T1 - Environmentally Friendly Corrosion Preventative Compounds in Aggressive Coastal Marine Environments T2 - 68th Annual Meeting of the National Association of Corrosion Engineering (CORROSION 2013) AN - 1369228560; 6214552 JF - 68th Annual Meeting of the National Association of Corrosion Engineering (CORROSION 2013) AU - Montgomery, Eliza AU - Calle, Luz AU - Kolody, Mark AU - Curran, Jerome Y1 - 2013/03/17/ PY - 2013 DA - 2013 Mar 17 KW - Marine environment KW - Corrosion control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369228560?accountid=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=68th+Annual+Meeting+of+the+National+Association+of+Corrosion+Engineering+%28CORROSION+2013%29&rft.atitle=Environmentally+Friendly+Corrosion+Preventative+Compounds+in+Aggressive+Coastal+Marine+Environments&rft.au=Montgomery%2C+Eliza%3BCalle%2C+Luz%3BKolody%2C+Mark%3BCurran%2C+Jerome&rft.aulast=Montgomery&rft.aufirst=Eliza&rft.date=2013-03-17&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=68th+Annual+Meeting+of+the+National+Association+of+Corrosion+Engineering+%28CORROSION+2013%29&rft.issn=&rft_id=info:doi/ L2 - http://www.nace.org/cstm/Events/Schedule.aspx?id=3c0b3545-0379-e111-ba5a-0050569a007b LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - JOUR T1 - Broadband array observations of the 300 km seismic discontinuity AN - 1429840872; 2013-070408 AB - Intermittent seismic discontinuities near 250-300 km depth beneath South America and the Pacific basin are detected with high-resolution seismic array methods that use SS and PP precursors recorded at the High Lava Plains Seismic Experiment and the EarthScope Transportable Array. The transformation of coesite to stishovite in an eclogite-rich mantle composition produces a seismic discontinuity near 300 km depth; lateral changes in basalt fraction of the upper mantle will thus produce an intermittent seismic discontinuity. The sensitivity of the precursors to intermittent seismic structure is addressed using an axisymmetric finite difference model of wave propagation in the mantle. These numerical experiments find that the precursors are sensitive to structures > or =500 km in lateral extent and that the observations of this discontinuity are plausibly tied to lateral variations in basaltic composition of the upper mantle related to dynamics, such as plumes and subduction. Abstract Copyright (2013), . American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Schmerr, Nicholas C AU - Kelly, Byron M AU - Thorne, Michael S Y1 - 2013/03/16/ PY - 2013 DA - 2013 Mar 16 SP - 841 EP - 846 PB - American Geophysical Union, Washington, DC VL - 40 IS - 5 SN - 0094-8276, 0094-8276 KW - silicates KW - subduction zones KW - silica minerals KW - South American Plate KW - mantle KW - elastic waves KW - stishovite KW - coesite KW - PP-waves KW - mineral composition KW - discontinuities KW - seismicity KW - framework silicates KW - Pacific Plate KW - chemical composition KW - mantle plumes KW - seismograms KW - upper mantle KW - body waves KW - numerical models KW - plate boundaries KW - subduction KW - plate tectonics KW - seismic waves KW - SS-waves KW - S-waves KW - arrays KW - Nazca Plate KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1429840872?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Broadband+array+observations+of+the+300+km+seismic+discontinuity&rft.au=Schmerr%2C+Nicholas+C%3BKelly%2C+Byron+M%3BThorne%2C+Michael+S&rft.aulast=Schmerr&rft.aufirst=Nicholas&rft.date=2013-03-16&rft.volume=40&rft.issue=5&rft.spage=841&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2Fgrl.50257 L2 - http://www.agu.org/journals/gl/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2013-01-01 N1 - Number of references - 22 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2013-09-05 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - arrays; body waves; chemical composition; coesite; discontinuities; elastic waves; framework silicates; mantle; mantle plumes; mineral composition; Nazca Plate; numerical models; Pacific Plate; plate boundaries; plate tectonics; PP-waves; S-waves; seismic waves; seismicity; seismograms; silica minerals; silicates; South American Plate; SS-waves; stishovite; subduction; subduction zones; upper mantle DO - http://dx.doi.org/10.1002/grl.50257 ER - TY - JOUR T1 - The quest for regolithic howardites; Part 1, Two trends uncovered using noble gases AN - 1400617660; 2013-053566 AB - We report noble gas data (helium (He), neon (Ne), argon (Ar), krypton (Kr) and xenon (Xe)), nominal gas retention ages (K-Ar, U-Th-He) and cosmic ray exposure (CRE) ages for the ten howardites EET 83376, EET 99408, LEW 85313, MET 00423, MET 96500, PCA 02066, PRA 04401, QUE 94200, QUE 97002, and SCO 06040, in research to better understand the regolith of the HED parent body - Vesta - through a combined petrological, compositional and noble gas study. Our main aim is to determine which howardites are truly regolithic - as defined by the presence of solar noble gas components (e.g. solar wind (SW), fractionated solar wind (FSW)) and/or by the presence of planetary components (e.g. Q, HL) associated with foreign clasts of carbonaceous chondrite material within the breccias. Of our ten howardites, four (LEW 85313, MET 00423, PRA 04401 and SCO 06040) show evidence for a regolithic origin, with noble gas ratios indicating the presence of trapped components. Howardites PRA 04401 and SCO 06040 contain significant amounts of CM type carbonaceous chondrite material, and these samples are dominated by a planetary component similar to that observed in CM meteorites Murchison and Maribo. Overall, we find evidence for two regolithic groups with different release trends: (1) SW/FSW component dominated howardites (LEW 85313 and MET 00423), where SW/FSW is dominant at low temperature releases, and less pronounced at higher temperatures; (2) Planetary component dominated howardites (PRA 04401 and SCO 06040) that also contain SW/FSW - the planetary component is associated with incorporated carbonaceous chondrite material, and is dominant at the mid-temperature release. The remaining six howardites EET 83376, EET 99408, MET 96500, PCA 02066, QUE 94200, and QUE 97002, are dominated by cosmogenic noble gases, and are not considered regolithic. Previous work by Warren et al. (2009) suggested that high siderophile element contents (specifically nickel (Ni)>300mu g/g) were a regolith indicator for howardites, in addition to restricted Al (sub 2) O (sub 3) contents (8-9 wt.%) representing a eucrite/diogenite mixing ratio of 2:1 as indicative of an ancient well-mixed regolith. These parameters were based on five 'gas-rich' howardites. However, we find no obvious correlation between these parameters and SW/FSW or planetary noble gas content in our howardite samples. We conclude that howardite regolith parameters are not as simple as those defined by Warren et al. (2009), where three of the five howardites used contained foreign CM material, which may have caused a bias in their defined parameters. We conclude that sideophile abundances alone cannot be used to determine the regolithic nature of a sample: noble gas analysis remains a key parameter, where it is important to distinguish between planetary-dominated and SW-dominated regolithic howardites. Abstract Copyright (2013) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Cartwright, J A AU - Ott, U AU - Mittlefehldt, D W AU - Herrin, J S AU - Herrmann, S AU - Mertzman, S A AU - Mertzman, K R AU - Peng, Z X AU - Quinn, J E Y1 - 2013/03/15/ PY - 2013 DA - 2013 Mar 15 SP - 395 EP - 421 PB - Elsevier, New York, NY VL - 105 SN - 0016-7037, 0016-7037 KW - stony meteorites KW - isotopes KW - Maribo Meteorite KW - stable isotopes KW - Murchison Meteorite KW - (U-Th)/He KW - meteorites KW - howardite KW - dates KW - noble gases KW - neon KW - absolute age KW - helium KW - Archean KW - chondrites KW - geochemistry KW - Precambrian KW - isotope ratios KW - parent bodies KW - cosmochemistry KW - carbonaceous chondrites KW - Ne-22/Ne-20 KW - xenon KW - krypton KW - achondrites KW - argon KW - K/Ar KW - CM chondrites KW - regolith KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1400617660?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=The+quest+for+regolithic+howardites%3B+Part+1%2C+Two+trends+uncovered+using+noble+gases&rft.au=Cartwright%2C+J+A%3BOtt%2C+U%3BMittlefehldt%2C+D+W%3BHerrin%2C+J+S%3BHerrmann%2C+S%3BMertzman%2C+S+A%3BMertzman%2C+K+R%3BPeng%2C+Z+X%3BQuinn%2C+J+E&rft.aulast=Cartwright&rft.aufirst=J&rft.date=2013-03-15&rft.volume=105&rft.issue=&rft.spage=395&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2012.11.047 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2013-01-01 N1 - Number of references - 115 N1 - PubXState - NY N1 - Document feature - illus. incl. 7 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2013-07-18 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - (U-Th)/He; absolute age; achondrites; Archean; argon; carbonaceous chondrites; chondrites; CM chondrites; cosmochemistry; dates; geochemistry; helium; howardite; isotope ratios; isotopes; K/Ar; krypton; Maribo Meteorite; meteorites; Murchison Meteorite; Ne-22/Ne-20; neon; noble gases; parent bodies; Precambrian; regolith; stable isotopes; stony meteorites; xenon DO - http://dx.doi.org/10.1016/j.gca.2012.11.047 ER - TY - JOUR T1 - In situ AFM observations of Ca-Mg carbonate crystallization catalyzed by dissolved sulfide; implications for sedimentary dolomite formation AN - 1400617226; 2013-053547 AB - It has been observed that the metabolism of sulfate-reducing bacteria can overcome the energy barrier to Mg (super 2+) incorporation into growing Ca-Mg carbonates and enhance dolomite precipitation, although the role of SRB in dolomite formation is still under debate. In this study, we presented in situ AFM observations of Ca-Mg carbonate {104} surface growing from supersaturated solutions. Our data showed that not only can Mg (super 2+) modify the morphology of the polygonal growth hillocks and impede step growth, but it can also inhibit 1-D step nucleation, resulting in the inability for spirals to continue their vertical growth. However, in the presence of dissolved sulfide, both the 1-D step nucleation and step growth which had been retarded by Mg (super 2+) ions were significantly enhanced. For example, in the presence as low as 0.13 mM dissolved sulfide, the step velocity can be increased by more than 9 times compared to that in contact with solutions containing Mg (super 2+) ions but no dissolved sulfide. The Ca-Mg carbonate growth hillock in contact with dissolved sulfide-bearing growth solutions eventually developed a micromosaic-like structure. Based on our observations, we propose that the overall catalytic effect of dissolved sulfide may be twofold, one to stabilize the critical nuclei during 1-D step nucleation by the adsorption of dissolved sulfide on Ca-Mg carbonate surfaces and two to facilitate the dehydration of surface Mg (super 2+) -water complexes during growth. We hypothesize that dissolved sulfide may adsorb on crystal faces through hydrogen bonding between the H in HS (super -) /H (sub 2) S and the O in calcite CO (sub 3) (super 2-) to weaken the rigid Mg (super 2+) hydration shell, resulting in an elevated activation entropy for particle attachment and hence a larger kinetic coefficient for step growth. Together with previous studies on disorder dolomite precipitation induced by dissolved sulfide, we demonstrate the catalysis role of dissolved sulfide in sedimentary dolomite formation associate with SRB, which may shed new light on the long-standing "dolomite problem". Abstract Copyright (2013) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Zhang, Fangfu AU - Yan, Chao AU - Teng, H Henry AU - Roden, Eric E AU - Xu, Huifang Y1 - 2013/03/15/ PY - 2013 DA - 2013 Mar 15 SP - 44 EP - 55 PB - Elsevier, New York, NY VL - 105 SN - 0016-7037, 0016-7037 KW - X-ray diffraction data KW - entropy KW - crystal structure KW - aqueous solutions KW - dolomite KW - catalysis KW - atomic force microscopy data KW - chemical reactions KW - water-rock interaction KW - sediments KW - calcium carbonate KW - chemical composition KW - kinetics KW - carbonate sediments KW - in situ KW - metabolism KW - magnesium carbonate KW - biochemistry KW - sedimentation KW - solutes KW - hydrochemistry KW - biogenic processes KW - saturation KW - deposition KW - precipitation KW - mathematical methods KW - bacteria KW - crystallization KW - dehydration KW - sulfides KW - carbonates KW - 01C:Mineralogy of non-silicates KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1400617226?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=In+situ+AFM+observations+of+Ca-Mg+carbonate+crystallization+catalyzed+by+dissolved+sulfide%3B+implications+for+sedimentary+dolomite+formation&rft.au=Zhang%2C+Fangfu%3BYan%2C+Chao%3BTeng%2C+H+Henry%3BRoden%2C+Eric+E%3BXu%2C+Huifang&rft.aulast=Zhang&rft.aufirst=Fangfu&rft.date=2013-03-15&rft.volume=105&rft.issue=&rft.spage=44&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2012.11.010 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2013-01-01 N1 - Number of references - 94 N1 - PubXState - NY N1 - Document feature - illus. N1 - SuppNotes - Includes appendices N1 - Last updated - 2013-07-18 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - aqueous solutions; atomic force microscopy data; bacteria; biochemistry; biogenic processes; calcium carbonate; carbonate sediments; carbonates; catalysis; chemical composition; chemical reactions; crystal structure; crystallization; dehydration; deposition; dolomite; entropy; hydrochemistry; in situ; kinetics; magnesium carbonate; mathematical methods; metabolism; precipitation; saturation; sedimentation; sediments; solutes; sulfides; water-rock interaction; X-ray diffraction data DO - http://dx.doi.org/10.1016/j.gca.2012.11.010 ER - TY - JOUR T1 - Rb-Sr isotopic systematics of alkali-rich fragments in the Yamato-74442 LL-chondritic breccia AN - 1366816882; 2013-047740 AB - We have undertaken mineralogical, petrographical and Rb-Sr isotopic studies on alkali-rich igneous rock fragments in the Yamato (Y)-74442 LL-chondritic breccia. The fragments are a few mm in size and are composed mainly of porphyritic olivine and dendritic pyroxene set in alkali-rich groundmass glass. Minor phases include chromite, troilite and metallic nickel-iron. Bulk chemical compositions of the fragments are almost identical to the host chondrite except for a depletion of sodium and an enrichment of potassium. Isotopic analyses of nine fragments from Y-74442 yield a Rb-Sr age of 4429+ or -54 Ma (2sigma ) for lambda ( (super 87) Rb)=0.01402 Ga (super -1) with an initial ratio of (super 87) Sr/ (super 86) Sr=0.7144+ or -0.0094 (2sigma ). Assuming precursors of the fragments formed 4568 Ma with (super 87) Sr/ (super 86) Sr=0.69889 when the Solar System formed, a time-averaged Rb/Sr (weight) ratio of the source material for the fragments is calculated to be 2.58+0.91/-0.93. The extremely high Rb/Sr value of this source is difficult to interpret by any igneous fractionation or liquid immiscibility, but can be explained by mixing of a chondritic component with an alkali-rich component formed in the early solar nebula. In our preferred model, the alkali component with Rb/Sr[]30 would have condensed from the residual nebular gas after removal of refractory strontium and must have been isolated for a long time in a region where the temperature was sufficiently low to prevent reaction with other silicates/oxides. A mixture of the alkali component (early nebular condensates) and the ferromagnesian component could reflect flash heating induced by impact on an LL-chondritic parent body at least 4429 Ma ago, and further enrichments of rubidium and potassium relative to strontium could have occurred during this event. The resulting impact-melt rocks could have been fragmented by later impact event(s) and finally incorporated into the Y-74442 parent body. Thus, a remarkable signature of alkali enrichments both in the early solar nebula and later on the LL-chondrite parent body is preserved as a minor component of some chondritic breccias such as Y-74442. Abstract Copyright (2013) Elsevier, B.V. JF - Earth and Planetary Science Letters AU - Yokoyama, Tatsunori AU - Misawa, Keiji AU - Okano, Osamu AU - Shih, Chi-Yu AU - Nyquist, Laurence E AU - Simon, Justin I AU - Tappa, Michael J AU - Yoneda, Shigekazu Y1 - 2013/03/15/ PY - 2013 DA - 2013 Mar 15 SP - 38 EP - 48 PB - Elsevier, Amsterdam VL - 366 SN - 0012-821X, 0012-821X KW - ordinary chondrites KW - stony meteorites KW - isotopes KW - enrichment KW - thermal ionization mass spectra KW - mass spectra KW - stable isotopes KW - melts KW - Rb/Sr KW - meteorites KW - impact melts KW - flash heating KW - dates KW - mixing KW - absolute age KW - spectra KW - chondrites KW - alkaline earth metals KW - Yamato Meteorites KW - breccia KW - condensation KW - isotope ratios KW - parent bodies KW - rubidium KW - alkali metals KW - LL chondrites KW - Y 74442 KW - gases KW - solar nebula KW - Sr-87/Sr-86 KW - immiscibility KW - metals KW - potassium KW - petrography KW - crystallization 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/1366816882?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Rb-Sr+isotopic+systematics+of+alkali-rich+fragments+in+the+Yamato-74442+LL-chondritic+breccia&rft.au=Yokoyama%2C+Tatsunori%3BMisawa%2C+Keiji%3BOkano%2C+Osamu%3BShih%2C+Chi-Yu%3BNyquist%2C+Laurence+E%3BSimon%2C+Justin+I%3BTappa%2C+Michael+J%3BYoneda%2C+Shigekazu&rft.aulast=Yokoyama&rft.aufirst=Tatsunori&rft.date=2013-03-15&rft.volume=366&rft.issue=&rft.spage=38&rft.isbn=&rft.btitle=&rft.title=Earth+and+Planetary+Science+Letters&rft.issn=0012821X&rft_id=info:doi/10.1016%2Fj.epsl.2013.01.037 L2 - http://www.sciencedirect.com/science/journal/0012821X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2013-01-01 N1 - Number of references - 45 N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Includes appendices N1 - Last updated - 2013-06-13 N1 - CODEN - EPSLA2 N1 - SubjectsTermNotLitGenreText - absolute age; alkali metals; alkaline earth metals; breccia; chondrites; condensation; crystallization; dates; enrichment; flash heating; gases; immiscibility; impact melts; isotope ratios; isotopes; LL chondrites; mass spectra; melts; metals; meteorites; mixing; ordinary chondrites; parent bodies; petrography; potassium; Rb/Sr; rubidium; solar nebula; spectra; Sr-87/Sr-86; stable isotopes; stony meteorites; strontium; thermal ionization mass spectra; Y 74442; Yamato Meteorites DO - http://dx.doi.org/10.1016/j.epsl.2013.01.037 ER - TY - JOUR T1 - An assessment of CALIOP polar stratospheric cloud composition classification AN - 1348485377; 17892677 AB - This study assesses the robustness of the CALIOP (Cloud-Aerosol Lidar with Orthogonal Polarization) polar stratospheric cloud (PSC) composition classification algorithm - which is based solely on the spaceborne lidar data - through the use of nearly coincident gas-phase HNO sub(3) and H sub(2)O data from the Microwave Limb Sounder (MLS) on Aura and Goddard Earth Observing System Model, Version 5 (GEOS-5) temperature analyses. Following the approach of Lambert et al. (2012), we compared the observed temperature-dependent HNO sub(3) uptake by PSCs in the various CALIOP composition classes with modeled uptake for supercooled ternary solutions (STS) and equilibrium nitric acid trihydrate (NAT). We examined the CALIOP PSC data record from both polar regions over the period from 2006 through 2011 and over a range of potential temperature levels spanning the 15-30 km altitude range. We found that most PSCs identified as STS exhibit gas phase uptake of HNO sub(3) consistent with theory, but with a small temperature bias, similar to Lambert et al. (2012). Ice PSC classification is also robust in the CALIOP optical data, with the mode in the ice observations occurring about 0.5 K below the frost point. We found that CALIOP PSCs identified as NAT mixtures exhibit two distinct preferred modes which reflect the fact that the growth of NAT particles is kinetically limited. One mode is significantly out of thermodynamic equilibrium with respect to NAT due to short exposure times to temperatures below the NAT existence temperature, T sub(NAT), with HNO sub(3) uptake dominated by the more numerous liquid droplets. The other NAT mixture mode is much closer to NAT thermodynamic equilibrium, indicating that the particles have been exposed to temperatures below T sub(NAT) for extended periods of time. With a few notable exceptions, PSCs in the various composition classes conform well to their expected temperature existence regimes. We have a good understanding of the cause of the minor misclassifications that do occur and will investigate means to correct these deficiencies in our next generation algorithm. JF - Atmospheric Chemistry and Physics AU - Pitts, M C AU - Poole, L R AU - Lambert, A AU - Thomason, L W AD - NASA Langley Research Center, Hampton, Virginia 23681, USA Y1 - 2013/03/15/ PY - 2013 DA - 2013 Mar 15 SP - 2975 EP - 2988 PB - European Geophysical Society, Max-Planck-Str. 13 Katlenburg-Lindau Germany VL - 13 IS - 6 SN - 1680-7316, 1680-7316 KW - Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Pollution Abstracts; Meteorological & Geoastrophysical Abstracts KW - Atmospheric pollution models KW - Algorithms KW - Lidar KW - Particulates KW - Temperature analysis KW - Microwaves KW - Assessments KW - Classification KW - Spaceborne lidar KW - Absorption KW - Ice observations KW - Polar stratospheric clouds KW - Temperature effects KW - Ice KW - Polar stratospheric cloud composition KW - Mathematical models KW - Thermodynamics KW - Temperature KW - Polarization KW - Stratosphere KW - Model Studies KW - Clouds KW - Thermodynamic equilibrium KW - Equilibrium KW - Potential temperature KW - Atmospheric chemistry KW - Uptake KW - LIDAR KW - SW 5010:Network design KW - Q2 09223:Optical properties KW - P 0000:AIR POLLUTION KW - AQ 00008:Effects of Pollution KW - M2 551.576:Clouds (551.576) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1348485377?accountid=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+Chemistry+and+Physics&rft.atitle=An+assessment+of+CALIOP+polar+stratospheric+cloud+composition+classification&rft.au=Pitts%2C+M+C%3BPoole%2C+L+R%3BLambert%2C+A%3BThomason%2C+L+W&rft.aulast=Pitts&rft.aufirst=M&rft.date=2013-03-15&rft.volume=13&rft.issue=6&rft.spage=2975&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Chemistry+and+Physics&rft.issn=16807316&rft_id=info:doi/10.5194%2Facp-13-2975-2013 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2016-04-29 N1 - SubjectsTermNotLitGenreText - Temperature effects; Microwaves; Mathematical models; Thermodynamic equilibrium; Classification; Potential temperature; Ice observations; Uptake; LIDAR; Polar stratospheric cloud composition; Atmospheric pollution models; Spaceborne lidar; Atmospheric chemistry; Algorithms; Polarization; Polar stratospheric clouds; Temperature analysis; Clouds; Ice; Thermodynamics; Temperature; Lidar; Particulates; Stratosphere; Assessments; Equilibrium; Absorption; Model Studies DO - http://dx.doi.org/10.5194/acp-13-2975-2013 ER - TY - JOUR T1 - Radiative forcing in the ACCMIP historical and future climate simulations AN - 1348485231; 17892676 AB - The Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP) examined the short-lived drivers of climate change in current climate models. Here we evaluate the 10 ACCMIP models that included aerosols, 8 of which also participated in the Coupled Model Intercomparison Project phase 5 (CMIP5). The models reproduce present-day total aerosol optical depth (AOD) relatively well, though many are biased low. Contributions from individual aerosol components are quite different, however, and most models underestimate east Asian AOD. The models capture most 1980-2000 AOD trends well, but underpredict increases over the Yellow/Eastern Sea. They strongly underestimate absorbing AOD in many regions. We examine both the direct radiative forcing (RF) and the forcing including rapid adjustments (effective radiative forcing; ERF, including direct and indirect effects). The models' all-sky 1850 to 2000 global mean annual average total aerosol RF is (mean; range) -0.26 W m super(-2); -0.06 to -0.49 W m super(-2). Screening based on model skill in capturing observed AOD yields a best estimate of -0.42 W m super(-2); -0.33 to -0.50 W m super(-2), including adjustment for missing aerosol components in some models. Many ACCMIP and CMIP5 models appear to produce substantially smaller aerosol RF than this best estimate. Climate feedbacks contribute substantially (35 to -58%) to modeled historical aerosol RF. The 1850 to 2000 aerosol ERF is -1.17 W m super(-2); -0.71 to -1.44 W m super(-2). Thus adjustments, including clouds, typically cause greater forcing than direct RF. Despite this, the multi-model spread relative to the mean is typically the same for ERF as it is for RF, or even smaller, over areas with substantial forcing. The largest 1850 to 2000 negative aerosol RF and ERF values are over and near Europe, south and east Asia and North America. ERF, however, is positive over the Sahara, the Karakoram, high Southern latitudes and especially the Arctic. Global aerosol RF peaks in most models around 1980, declining thereafter with only weak sensitivity to the Representative Concentration Pathway (RCP). One model, however, projects approximately stable RF levels, while two show increasingly negative RF due to nitrate (not included in most models). Aerosol ERF, in contrast, becomes more negative during 1980 to 2000. During this period, increased Asian emissions appear to have a larger impact on aerosol ERF than European and North American decreases due to their being upwind of the large, relatively pristine Pacific Ocean. There is no clear relationship between historical aerosol ERF and climate sensitivity in the CMIP5 subset of ACCMIP models. In the ACCMIP/CMIP5 models, historical aerosol ERF of about -0.8 to -1.5 W m super(-2) is most consistent with observed historical warming. Aerosol ERF masks a large portion of greenhouse forcing during the late 20th and early 21st century at the global scale. Regionally, aerosol ERF is so large that net forcing is negative over most industrialized and biomass burning regions through 1980, but remains strongly negative only over east and southeast Asia by 2000. Net forcing is strongly positive by 1980 over most deserts, the Arctic, Australia, and most tropical oceans. Both the magnitude of and area covered by positive forcing expand steadily thereafter. JF - Atmospheric Chemistry and Physics AU - Shindell, D T AU - Lamarque, J-F AU - Schulz, M AU - Flanner, M AU - Jiao, C AU - Chin, M AU - Young, P J AU - Lee, Y H AU - Rotstayn, L AU - Mahowald, N AD - NASA Goddard Institute for Space Studies and Columbia Earth Institute, New York, NY, USA Y1 - 2013/03/15/ PY - 2013 DA - 2013 Mar 15 SP - 2939 EP - 2974 PB - European Geophysical Society, Max-Planck-Str. 13 Katlenburg-Lindau Germany VL - 13 IS - 6 SN - 1680-7316, 1680-7316 KW - Pollution Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Sustainability Science Abstracts; Aqualine Abstracts; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Historical account KW - Atmospheric pollution models KW - Atmospheric circulation-oceanic circulation coupled models KW - Radiative forcing KW - INW, Asia KW - Arctic KW - North America KW - Sensitivity KW - Aerosols KW - Model Studies KW - Greenhouses KW - Clouds KW - Currents KW - Numerical simulations KW - Atmospheric chemistry KW - Climate change KW - ANE, Europe KW - Australia KW - IN, Pacific KW - Atmospheric Chemistry KW - Screening KW - Climate models KW - Nitrates KW - Climates KW - Polar environments KW - PN, Arctic KW - Deserts KW - Oceans KW - Atmospheric forcing KW - Global warming KW - Global aerosols KW - ISEW, Southeast Asia KW - Future climates KW - SW 5010:Network design KW - AQ 00006:Sewage KW - P 0000:AIR POLLUTION KW - M2 551.583:Variations (551.583) KW - M3 1010:Issues in Sustainable Development KW - Q2 09161:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1348485231?accountid=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+Chemistry+and+Physics&rft.atitle=Radiative+forcing+in+the+ACCMIP+historical+and+future+climate+simulations&rft.au=Shindell%2C+D+T%3BLamarque%2C+J-F%3BSchulz%2C+M%3BFlanner%2C+M%3BJiao%2C+C%3BChin%2C+M%3BYoung%2C+P+J%3BLee%2C+Y+H%3BRotstayn%2C+L%3BMahowald%2C+N&rft.aulast=Shindell&rft.aufirst=D&rft.date=2013-03-15&rft.volume=13&rft.issue=6&rft.spage=2939&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Chemistry+and+Physics&rft.issn=16807316&rft_id=info:doi/10.5194%2Facp-13-2939-2013 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Screening; Aerosols; Deserts; Climate change; Atmospheric forcing; Atmospheric chemistry; Atmospheric pollution models; Radiative forcing; Climate models; Numerical simulations; Global warming; Global aerosols; Atmospheric circulation-oceanic circulation coupled models; Future climates; Clouds; Sensitivity; Historical account; Currents; Oceans; Polar environments; Atmospheric Chemistry; Nitrates; Climates; Arctic; Greenhouses; Model Studies; PN, Arctic; North America; ANE, Europe; INW, Asia; Australia; IN, Pacific; ISEW, Southeast Asia DO - http://dx.doi.org/10.5194/acp-13-2939-2013 ER - TY - NEWS T1 - What Exploded over Russia? AN - 1315533080 JF - UPI Space Daily AU - Tony Phillips for NASA Science News Y1 - 2013/03/11/ PY - 2013 DA - 2013 Mar 11 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1315533080?accountid=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=What+Exploded+over+Russia%3F&rft.au=Tony+Phillips+for+NASA+Science+News&rft.aulast=Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2013-03-11&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 - 2013-03-11 ER - TY - JOUR T1 - Analysis of present day and future OH and methane lifetime in the ACCMIP simulations AN - 1323818491; 17825653 AB - Results from simulations performed for the Atmospheric Chemistry and Climate Modeling Intercomparison Project (ACCMIP) are analysed to examine how OH and methane lifetime may change from present day to the future, under different climate and emissions scenarios. Present day (2000) mean tropospheric chemical lifetime derived from the ACCMIP multi-model mean is 9.8 plus or minus 1.6 yr (9.3 plus or minus 0.9 yr when only including selected models), lower than a recent observationally-based estimate, but with a similar range to previous multi-model estimates. Future model projections are based on the four Representative Concentration Pathways (RCPs), and the results also exhibit a large range. Decreases in global methane lifetime of 4.5 plus or minus 9.1% are simulated for the scenario with lowest radiative forcing by 2100 (RCP 2.6), while increases of 8.5 plus or minus 10.4% are simulated for the scenario with highest radiative forcing (RCP 8.5). In this scenario, the key driver of the evolution of OH and methane lifetime is methane itself, since its concentration more than doubles by 2100 and it consumes much of the OH that exists in the troposphere. Stratospheric ozone recovery, which drives tropospheric OH decreases through photolysis modifications, also plays a partial role. In the other scenarios, where methane changes are less drastic, the interplay between various competing drivers leads to smaller and more diverse OH and methane lifetime responses, which are difficult to attribute. For all scenarios, regional OH changes are even more variable, with the most robust feature being the large decreases over the remote oceans in RCP8.5. Through a regression analysis, we suggest that differences in emissions of non-methane volatile organic compounds and in the simulation of photolysis rates may be the main factors causing the differences in simulated present day OH and methane lifetime. Diversity in predicted changes between present day and future OH was found to be associated more strongly with differences in modelled temperature and stratospheric ozone changes. Finally, through perturbation experiments we calculated an OH feedback factor (F) of 1.24 from present day conditions (1.50 from 2100 RCP8.5 conditions) and a climate feedback on methane lifetime of 0.33 plus or minus 0.13 yr K super(-1), on average. Models that did not include interactive stratospheric ozone effects on photolysis showed a stronger sensitivity to climate, as they did not account for negative effects of climate-driven stratospheric ozone recovery on tropospheric OH, which would have partly offset the overall OH/methane lifetime response to climate change. JF - Atmospheric Chemistry and Physics AU - Voulgarakis, A AU - Naik, V AU - Lamarque, J-F AU - Shindell, D T AU - Young, P J AU - Prather, MJ AU - Wild, O AU - Field, R D AU - Bergmann, D AU - Cameron-Smith, P AD - NASA Goddard Institute for Space Studies and Columbia Earth Institute, New York, NY, USA Y1 - 2013/03/05/ PY - 2013 DA - 2013 Mar 05 SP - 2563 EP - 2587 PB - European Geophysical Society, Max-Planck-Str. 13 Katlenburg-Lindau Germany VL - 13 IS - 5 SN - 1680-7316, 1680-7316 KW - Sustainability Science Abstracts; Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; Pollution Abstracts KW - Atmospheric pollution models KW - Ozone in stratosphere KW - Radiative forcing KW - Emissions KW - Ozone KW - Sensitivity KW - Photolysis KW - Simulation Analysis KW - Model Studies KW - Numerical simulations KW - Atmospheric chemistry KW - Organic Compounds KW - Volatile organic compounds KW - Climate change KW - Regression analysis KW - Ocean-atmosphere system KW - Atmospheric Chemistry KW - Temperature effects KW - Marine KW - Methane KW - Climate models KW - Climates KW - Temperature KW - Troposphere KW - Simulation KW - Stratosphere KW - Oceans KW - Q2 09188:Atmospheric chemistry KW - AQ 00006:Sewage KW - SW 5040:Data acquisition KW - P 0000:AIR POLLUTION KW - M3 1010:Issues in Sustainable Development KW - M2 551.581:Latitudinal Influences (551.581) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1323818491?accountid=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+Chemistry+and+Physics&rft.atitle=Analysis+of+present+day+and+future+OH+and+methane+lifetime+in+the+ACCMIP+simulations&rft.au=Voulgarakis%2C+A%3BNaik%2C+V%3BLamarque%2C+J-F%3BShindell%2C+D+T%3BYoung%2C+P+J%3BPrather%2C+MJ%3BWild%2C+O%3BField%2C+R+D%3BBergmann%2C+D%3BCameron-Smith%2C+P&rft.aulast=Voulgarakis&rft.aufirst=A&rft.date=2013-03-05&rft.volume=13&rft.issue=5&rft.spage=2563&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Chemistry+and+Physics&rft.issn=16807316&rft_id=info:doi/10.5194%2Facp-13-2563-2013 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-04-01 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Temperature effects; Photolysis; Methane; Atmospheric chemistry; Climate change; Ocean-atmosphere system; Simulation; Troposphere; Ozone; Atmospheric pollution models; Radiative forcing; Climate models; Numerical simulations; Ozone in stratosphere; Regression analysis; Sensitivity; Temperature; Stratosphere; Oceans; Emissions; Volatile organic compounds; Atmospheric Chemistry; Simulation Analysis; Climates; Organic Compounds; Model Studies; Marine DO - http://dx.doi.org/10.5194/acp-13-2563-2013 ER - TY - JOUR T1 - Interactive ozone and methane chemistry in GISS-E2 historical and future climate simulations AN - 1323814702; 17825657 AB - The new generation GISS climate model includes fully interactive chemistry related to ozone in historical and future simulations, and interactive methane in future simulations. Evaluation of ozone, its tropospheric precursors, and methane shows that the model captures much of the large-scale spatial structure seen in recent observations. While the model is much improved compared with the previous chemistry-climate model, especially for ozone seasonality in the stratosphere, there is still slightly too rapid stratospheric circulation, too little stratosphere-to-troposphere ozone flux in the Southern Hemisphere and an Antarctic ozone hole that is too large and persists too long. Quantitative metrics of spatial and temporal correlations with satellite datasets as well as spatial autocorrelation to examine transport and mixing are presented to document improvements in model skill and provide a benchmark for future evaluations. The difference in radiative forcing (RF) calculated using modeled tropospheric ozone versus tropospheric ozone observed by TES is only 0.016 W m super(-2). Historical 20th Century simulations show a steady increase in whole atmosphere ozone RF through 1970 after which there is a decrease through 2000 due to stratospheric ozone depletion. Ozone forcing increases throughout the 21st century under RCP8.5 owing to a projected recovery of stratospheric ozone depletion and increases in methane, but decreases under RCP4.5 and 2.6 due to reductions in emissions of other ozone precursors. RF from methane is 0.05 to 0.18 W m super(-2) higher in our model calculations than in the RCP RF estimates. The surface temperature response to ozone through 1970 follows the increase in forcing due to tropospheric ozone. After that time, surface temperatures decrease as ozone RF declines due to stratospheric depletion. The stratospheric ozone depletion also induces substantial changes in surface winds and the Southern Ocean circulation, which may play a role in a slightly stronger response per unit forcing during later decades. Tropical precipitation shifts south during boreal summer from 1850 to 1970, but then shifts northward from 1970 to 2000, following upper tropospheric temperature gradients more strongly than those at the surface. JF - Atmospheric Chemistry and Physics AU - Shindell, D T AU - Pechony, O AU - Voulgarakis, A AU - Faluvegi, G AU - Nazarenko, L AU - Lamarque, J-F AU - Bowman, K AU - Milly, G AU - Kovari, B AU - Ruedy, R AD - NASA Goddard Institute for Space Studies and Columbia Earth Institute, New York, NY USA Y1 - 2013/03/05/ PY - 2013 DA - 2013 Mar 05 SP - 2653 EP - 2689 PB - European Geophysical Society, Max-Planck-Str. 13 Katlenburg-Lindau Germany VL - 13 IS - 5 SN - 1680-7316, 1680-7316 KW - Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Surface temperatures KW - Ozone in stratosphere KW - Mixing KW - Evaluation KW - Ozone in troposphere KW - Antarctic ozone hole KW - Ozone KW - Temperature effects KW - Seasonality KW - Methane KW - Climate models KW - Depletion KW - Climates KW - Temperature KW - Troposphere KW - Precipitation KW - Temperature gradients KW - Stratosphere KW - Model Studies KW - Oceanic circulation KW - Numerical simulations KW - Atmospheric chemistry KW - PS, Antarctic Ocean KW - Future climates KW - AQ 00006:Sewage KW - SW 5080:Evaluation, processing and publication KW - Q2 09284:Hydrodynamics, wave, current and ice forces KW - M2 551.581:Latitudinal Influences (551.581) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1323814702?accountid=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+Chemistry+and+Physics&rft.atitle=Interactive+ozone+and+methane+chemistry+in+GISS-E2+historical+and+future+climate+simulations&rft.au=Shindell%2C+D+T%3BPechony%2C+O%3BVoulgarakis%2C+A%3BFaluvegi%2C+G%3BNazarenko%2C+L%3BLamarque%2C+J-F%3BBowman%2C+K%3BMilly%2C+G%3BKovari%2C+B%3BRuedy%2C+R&rft.aulast=Shindell&rft.aufirst=D&rft.date=2013-03-05&rft.volume=13&rft.issue=5&rft.spage=2653&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Chemistry+and+Physics&rft.issn=16807316&rft_id=info:doi/10.5194%2Facp-13-2653-2013 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-04-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Seasonality; Temperature effects; Methane; Atmospheric chemistry; Troposphere; Temperature gradients; Stratosphere; Ozone; Surface temperatures; Ozone in troposphere; Oceanic circulation; Climate models; Ozone in stratosphere; Numerical simulations; Precipitation; Antarctic ozone hole; Future climates; Evaluation; Depletion; Climates; Temperature; Mixing; Model Studies; PS, Antarctic Ocean DO - http://dx.doi.org/10.5194/acp-13-2653-2013 ER - TY - JOUR T1 - Estimating water discharge from large radar altimetry datasets AN - 1412552360; 18231268 AB - The objective of this study is to evaluate the potential of large altimetry datasets as a complementary gauging network capable of providing water discharge in ungauged regions. A rating curve-based methodology is adopted to derive water discharge from altimetric data provided by the Envisat satellite at 475 virtual stations (VS) within the Amazon basin. From a global-scale perspective, the stage-discharge relations at VS are built based on radar altimetry and outputs from a modeling system composed of a land surface model and a global river routing scheme. In order to quantify the impact of model uncertainties on rating-curve based discharges, a second experiment is performed using outputs from a simulation where daily observed discharges at 135 gauging stations are introduced in the modeling system. Discharge estimates at 90 VS are evaluated against observations during the curve fitting calibration (2002-2005) and evaluation (2006-2008) periods, resulting in mean normalized RMS errors as high as 39 and 15% for experiments without and with direct insertion of data, respectively. Without direct insertion, uncertainty of discharge estimates can be mostly attributed to forcing errors at smaller scales, generating a positive correlation between performance and drainage area. Mean relative streamflow volume errors (RE) of altimetry-based discharges varied from 15 to 84% for large and small drainage areas, respectively. Rating curves produced a mean RE of 51% versus 68% from model outputs. Inserting discharge data into the modeling system decreases the mean RE from 51 to 18%, and mean NRMSE from 24 to 9%. These results demonstrate the feasibility of applying the proposed methodology to the continental or global scales. JF - Hydrology and Earth System Sciences AU - Getirana, ACV AU - Peters-Lidard, C AD - Hydrological Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA Y1 - 2013/03/04/ PY - 2013 DA - 2013 Mar 04 SP - 923 EP - 933 PB - European Geosciences Union, c/o E.O.S.T. Strasbourg Cedex 67084 France VL - 17 IS - 3 SN - 1027-5606, 1027-5606 KW - Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Freshwater KW - Hydrologic Models KW - Calibrations KW - Networks KW - Hydrology KW - Drainage Area KW - Hydrologic Data KW - Estimating KW - River discharge KW - Routing KW - Errors KW - Altimetry KW - Stream flow KW - South America, Amazon R. KW - Radar KW - Radar altimetry KW - AQ 00006:Sewage KW - SW 5080:Evaluation, processing and publication KW - Q2 09171:Dynamics of lakes and rivers UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1412552360?accountid=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=Estimating+water+discharge+from+large+radar+altimetry+datasets&rft.au=Getirana%2C+ACV%3BPeters-Lidard%2C+C&rft.aulast=Getirana&rft.aufirst=ACV&rft.date=2013-03-04&rft.volume=17&rft.issue=3&rft.spage=923&rft.isbn=&rft.btitle=&rft.title=Hydrology+and+Earth+System+Sciences&rft.issn=10275606&rft_id=info:doi/10.5194%2Fhess-17-923-2013 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-07-01 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Radar altimetry; River discharge; Hydrology; Altimetry; Stream flow; Hydrologic Models; Calibrations; Estimating; Radar; Networks; Routing; Drainage Area; Errors; Hydrologic Data; South America, Amazon R.; Freshwater DO - http://dx.doi.org/10.5194/hess-17-923-2013 ER - TY - NEWS T1 - NASA's Kepler Mission Discovers Tiny Planet System AN - 1314390205 JF - UPI Space Daily AU - Michele Johnson for Ames Research Center Y1 - 2013/03/04/ PY - 2013 DA - 2013 Mar 04 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1314390205?accountid=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%27s+Kepler+Mission+Discovers+Tiny+Planet+System&rft.au=Michele+Johnson+for+Ames+Research+Center&rft.aulast=Michele+Johnson+for+Ames+Research+Center&rft.aufirst=&rft.date=2013-03-04&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 - 2013-03-04 ER - TY - JOUR T1 - The Agricultural Model Intercomparison and Improvement Project (AgMIP): Protocols and pilot studies AN - 1770370450; PQ0002255159 AB - The Agricultural Model Intercomparison and Improvement Project (AgMIP) is a major international effort linking the climate, crop, and economic modeling communities with cutting-edge information technology to produce improved crop and economic models and the next generation of climate impact projections for the agricultural sector. The goals of AgMIP are to improve substantially the characterization of world food security due to climate change and to enhance adaptation capacity in both developing and developed countries. Analyses of the agricultural impacts of climate variability and change require a transdisciplinary effort to consistently link state-of-the-art climate scenarios to crop and economic models. Crop model outputs are aggregated as inputs to regional and global economic models to determine regional vulnerabilities, changes in comparative advantage, price effects, and potential adaptation strategies in the agricultural sector. Climate, Crop Modeling, Economics, and Information Technology Team Protocols are presented to guide coordinated climate, crop modeling, economics, and information technology research activities around the world, along with AgMIP Cross-Cutting Themes that address uncertainty, aggregation and scaling, and the development of Representative Agricultural Pathways (RAPs) to enable testing of climate change adaptations in the context of other regional and global trends. The organization of research activities by geographic region and specific crops is described, along with project milestones. Pilot results demonstrate AgMIP's role in assessing climate impacts with explicit representation of uncertainties in climate scenarios and simulations using crop and economic models. An intercomparison of wheat model simulations near Obregon, Mexico reveals inter-model differences in yield sensitivity to [CO2] with model uncertainty holding approximately steady as concentrations rise, while uncertainty related to choice of crop model increases with rising temperatures. Wheat model simulations with mid-century climate scenarios project a slight decline in absolute yields that is more sensitive to selection of crop model than to global climate model, emissions scenario, or climate scenario downscaling method. A comparison of regional and national-scale economic simulations finds a large sensitivity of projected yield changes to the simulations' resolved scales. Finally, a global economic model intercomparison example demonstrates that improvements in the understanding of agriculture futures arise from integration of the range of uncertainty in crop, climate, and economic modeling results in multi-model assessments. JF - Agricultural and Forest Meteorology AU - Rosenzweig, C AU - Jones, J W AU - Hatfield, J L AU - Ruane, A C AU - Boote, K J AU - Thorburn, P AU - Antle, J M AU - Nelson, G C AU - Porter, C AU - Janssen, S AU - Asseng, S AU - Basso, B AU - Ewert, F AU - Wallach, D AU - Baigorria, G AU - Winter, J M AD - NASA Goddard Institute for Space Studies, New York, NY, USA Y1 - 2013/03// PY - 2013 DA - March 2013 SP - 166 EP - 182 PB - Elsevier B.V., The Boulevard Kidlington Oxford OX5 1GB United Kingdom VL - 170 SN - 0168-1923, 0168-1923 KW - Environmental Engineering Abstracts (EN); CSA / ASCE Civil Engineering Abstracts (CE); Aerospace & High Technology Database (AH) KW - Agriculture KW - Food security KW - Climate change KW - Crop models KW - Economic models KW - Intercomparison KW - Uncertainty KW - Risk KW - Adaptation KW - Agronomy KW - Computer simulation KW - Economics KW - Climate KW - Economic analysis KW - Regional KW - Crops UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1770370450?accountid=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=Agricultural+and+Forest+Meteorology&rft.atitle=The+Agricultural+Model+Intercomparison+and+Improvement+Project+%28AgMIP%29%3A+Protocols+and+pilot+studies&rft.au=Rosenzweig%2C+C%3BJones%2C+J+W%3BHatfield%2C+J+L%3BRuane%2C+A+C%3BBoote%2C+K+J%3BThorburn%2C+P%3BAntle%2C+J+M%3BNelson%2C+G+C%3BPorter%2C+C%3BJanssen%2C+S%3BAsseng%2C+S%3BBasso%2C+B%3BEwert%2C+F%3BWallach%2C+D%3BBaigorria%2C+G%3BWinter%2C+J+M&rft.aulast=Rosenzweig&rft.aufirst=C&rft.date=2013-03-01&rft.volume=170&rft.issue=&rft.spage=166&rft.isbn=&rft.btitle=&rft.title=Agricultural+and+Forest+Meteorology&rft.issn=01681923&rft_id=info:doi/10.1016%2Fj.agrformet.2012.09.011 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-03-01 N1 - Number of references - 89 N1 - Last updated - 2016-12-05 DO - http://dx.doi.org/10.1016/j.agrformet.2012.09.011 ER - TY - JOUR T1 - Climate change impact uncertainties for maize in Panama: Farm information, climate projections, and yield sensitivities AN - 1735918789; PQ0002255164 AB - We present results from a pilot project to characterize and bound multi-disciplinary uncertainties around the assessment of maize (Zea mays) production impacts using the CERES-Maize crop model in a climate-sensitive region with a variety of farming systems (Panama). Segunda coa (autumn) maize yield in Panama currently suffers occasionally from high water stress at the end of the growing season, however under future climate conditions warmer temperatures accelerate crop maturation and elevated CO2 concentrations improve water retention. This combination reduces end-of-season water stresses and eventually leads to small mean yield gains according to median projections, although accelerated maturation reduces yields in seasons with low water stresses. Calibrations of cultivar traits, soil profile, and fertilizer amounts are most important for representing baseline yields, however sensitivity to all management factors are reduced in an assessment of future yield changes (most dramatically for fertilizers), suggesting that yield changes may be more generalizable than absolute yields.Uncertainty around GCMs' projected changes in rainfall gain in importance throughout the century, with yield changes strongly correlated with growing season rainfall totals. Climate changes are expected to be obscured by the large interannual variations in Panamanian climate that will continue to be the dominant influence on seasonal maize yield into the coming decades. The relatively high (A2) and low (B1) emissions scenarios show little difference in their impact on future maize yields until the end of the century. Uncertainties related to the sensitivity of CERES-Maize to carbon dioxide concentrations have a substantial influence on projected changes, and remain a significant obstacle to climate change impacts assessment. Finally, an investigation into the potential of simple statistical yield emulators based upon key climate variables characterizes the important uncertainties behind the selection of climate change metrics and their performance against more complex process-based crop model simulations, revealing a danger in relying only on long-term mean quantities for crop impact assessment. JF - Agricultural and Forest Meteorology AU - Ruane, Alex C AU - Cecil, LDeWayne AU - Horton, Radley M AU - Gordon, Roman AU - McCollum, Raymond AU - Brown, Douglas AU - Killough, Brian AU - Goldberg, Richard AU - Greeley, Adam P AU - Rosenzweig, Cynthia AD - NASA Goddard Institute for Space Studies, New York, NY, USA Y1 - 2013/03// PY - 2013 DA - March 2013 SP - 132 EP - 145 PB - Elsevier B.V., The Boulevard Kidlington Oxford OX5 1GB United Kingdom VL - 170 SN - 0168-1923, 0168-1923 KW - Water Resources Abstracts; Pollution Abstracts; Sustainability Science Abstracts; Meteorological & Geoastrophysical Abstracts KW - Climate change KW - Crop modeling KW - Uncertainty KW - Adaptation KW - Panama KW - Maize KW - GCM ensembles KW - Farms KW - Rainfall KW - Statistical analysis KW - Crops KW - Water Stress KW - Yield KW - Fertilizers KW - Zea mays KW - Corn KW - Soil profiles KW - Meteorology KW - Seasonal variability KW - Sensitivity KW - Growing season KW - Climate models KW - Climates KW - Climate KW - Temperature KW - Agrochemicals KW - Air pollution forecasting KW - Interannual variability KW - Water stress KW - Numerical simulations KW - General circulation models KW - Carbon dioxide KW - Carbon Dioxide KW - Future climates KW - P 0000:AIR POLLUTION 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/1735918789?accountid=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+change+impact+uncertainties+for+maize+in+Panama%3A+Farm+information%2C+climate+projections%2C+and+yield+sensitivities&rft.au=Ruane%2C+Alex+C%3BCecil%2C+LDeWayne%3BHorton%2C+Radley+M%3BGordon%2C+Roman%3BMcCollum%2C+Raymond%3BBrown%2C+Douglas%3BKillough%2C+Brian%3BGoldberg%2C+Richard%3BGreeley%2C+Adam+P%3BRosenzweig%2C+Cynthia&rft.aulast=Ruane&rft.aufirst=Alex&rft.date=2013-03-01&rft.volume=170&rft.issue=&rft.spage=132&rft.isbn=&rft.btitle=&rft.title=Agricultural+and+Forest+Meteorology&rft.issn=01681923&rft_id=info:doi/10.1016%2Fj.agrformet.2011.10.015 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-11-01 N1 - Number of references - 36 N1 - Last updated - 2016-11-09 N1 - SubjectsTermNotLitGenreText - Interannual variability; Climate models; Growing season; Numerical simulations; General circulation models; Climate change; Statistical analysis; Seasonal variability; Carbon dioxide; Future climates; Sensitivity; Farms; Rainfall; Climate; Temperature; Agrochemicals; Crops; Fertilizers; Air pollution forecasting; Water stress; Soil profiles; Meteorology; Yield; Corn; Climates; Carbon Dioxide; Water Stress; Zea mays; Panama DO - http://dx.doi.org/10.1016/j.agrformet.2011.10.015 ER - TY - JOUR T1 - Climate forcing growth rates: doubling down on our Faustian bargain AN - 1705083340; PQ0001831441 AB - Rahmstorf et al's (2012) conclusion that observed climate change is comparable to projections, and in some cases exceeds projections, allows further inferences if we can quantify changing climate forcings and compare those with projections. The largest climate forcing is caused by well-mixed long-lived greenhouse gases. Here we illustrate trends of these gases and their climate forcings, and we discuss implications. We focus on quantities that are accurately measured, and we include comparison with fixed scenarios, which helps reduce common misimpressions about how climate forcings are changing. JF - Environmental Research Letters AU - Hansen, James AU - Kharecha, Pushker AU - Sato, Makiko AD - Goddard Institute for Space Studies and Columbia Earth Institute, 2880 Broadway, New York, NY 10025, USA, james.e.hansen@nasa.gov Y1 - 2013/03// PY - 2013 DA - March 2013 SP - 1 EP - 9 PB - IOP Publishing, The Public Ledger Building, Suite 929 Philadelphia PA 19106 United States VL - 8 IS - 1 SN - 1748-9326, 1748-9326 KW - Pollution Abstracts; Meteorological & Geoastrophysical Abstracts; Sustainability Science Abstracts; Environment Abstracts KW - Growth rate KW - Gases KW - Climate KW - Climate change KW - Environmental research KW - Greenhouse gases KW - M2 551.583:Variations (551.583) KW - P 0000:AIR POLLUTION KW - M3 1010:Issues in Sustainable Development KW - ENA 20:Weather Modification & Geophysical Change UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1705083340?accountid=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=Environmental+Research+Letters&rft.atitle=Climate+forcing+growth+rates%3A+doubling+down+on+our+Faustian+bargain&rft.au=Hansen%2C+James%3BKharecha%2C+Pushker%3BSato%2C+Makiko&rft.aulast=Hansen&rft.aufirst=James&rft.date=2013-03-01&rft.volume=8&rft.issue=1&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Environmental+Research+Letters&rft.issn=17489326&rft_id=info:doi/10.1088%2F1748-9326%2F8%2F1%2F011006 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Last updated - 2016-08-03 N1 - SubjectsTermNotLitGenreText - Climate change; Environmental research; Greenhouse gases; Growth rate; Gases; Climate DO - http://dx.doi.org/10.1088/1748-9326/8/1/011006 ER - TY - JOUR T1 - Detection and attribution of anthropogenic climate change impacts AN - 1647021732; 21310512 AB - Human-influenced climate change is an observed phenomenon affecting physical and biological systems across the globe. The majority of observed impacts are related to temperature changes and are located in the northern high- and mid-latitudes. However, new evidence is emerging that demonstrates that impacts are related to precipitation changes as well as temperature, and that climate change is impacting systems and sectors beyond the Northern Hemisphere. In this paper, we highlight some of this new evidence-focusing on regions and sectors that the Intergovernmental Panel on Climate Change Fourth Assessment Report (IPCC AR4) noted as under-represented-in the context of observed climate change impacts, direct and indirect drivers of change (including carbon dioxide itself), and methods of detection. We also present methods and studies attributing observed impacts to anthropogenic forcing. We argue that the expansion of methods of detection (in terms of a broader array of climate variables and data sources, inclusion of the major modes of climate variability, and incorporation of other drivers of change) is key to discerning the climate sensitivities of sectors and systems in regions where the impacts of climate change currently remain elusive. Attributing such changes to human forcing of the climate system, where possible, is important for development of effective mitigation and adaptation. Current challenges in documenting adaptation and the role of indigenous knowledge in detection and attribution are described. WIREs Clim Change 2013, 4:121-150. doi: 10.1002/wcc.209 For further resources related to this article, please visit the WIREs website. JF - Wiley Interdisciplinary Reviews: Climate Change AU - Rosenzweig, Cynthia AU - Neofotis, Peter AD - Department of Biological Sciences, Brooklyn College, City University of New York, Brooklyn, NY, USA., cynthia.rosenzweig@nasa.gov Y1 - 2013/03// PY - 2013 DA - March 2013 SP - 121 EP - 150 PB - Wiley-Blackwell, Baffins Lane Chichester W. Sussex PO19 1UD United Kingdom VL - 4 IS - 2 SN - 1757-7780, 1757-7780 KW - Meteorological & Geoastrophysical Abstracts; Sustainability Science Abstracts KW - Temperature changes KW - Sensitivity KW - Mitigation KW - Rainfall KW - Climate change KW - Anthropogenic factors KW - Temperature KW - Intergovernmental Panel on Climate Change KW - Precipitation KW - Anthropogenic climate changes KW - World Wide Web KW - Indigenous knowledge KW - Adaptability KW - Climatic variability KW - Reviews KW - Climate sensitivity KW - Carbon dioxide 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/1647021732?accountid=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=Wiley+Interdisciplinary+Reviews%3A+Climate+Change&rft.atitle=Detection+and+attribution+of+anthropogenic+climate+change+impacts&rft.au=Rosenzweig%2C+Cynthia%3BNeofotis%2C+Peter&rft.aulast=Rosenzweig&rft.aufirst=Cynthia&rft.date=2013-03-01&rft.volume=4&rft.issue=2&rft.spage=121&rft.isbn=&rft.btitle=&rft.title=Wiley+Interdisciplinary+Reviews%3A+Climate+Change&rft.issn=17577780&rft_id=info:doi/10.1002%2Fwcc.209 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-01-01 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Temperature changes; Climatic variability; Climate sensitivity; Climate change; Precipitation; Intergovernmental Panel on Climate Change; Carbon dioxide; World Wide Web; Anthropogenic climate changes; Sensitivity; Mitigation; Adaptability; Reviews; Rainfall; Temperature; Anthropogenic factors; Indigenous knowledge DO - http://dx.doi.org/10.1002/wcc.209 ER - TY - JOUR T1 - Research focus group activity of the Sao Paulo Advanced School of Astrobiology; SPASA 2011 AN - 1618132053; 2014-084190 JF - Astrobiology AU - Galante, Douglas AU - Rodrigues, Fabio AU - Lima, Ivan Glaucio Paulino AU - Duarte, Rubens T D Y1 - 2013/03// PY - 2013 DA - March 2013 SP - 292 EP - 293 PB - Mary Ann Liebert, Larchmont, NY VL - 13 IS - 3 SN - 1531-1074, 1531-1074 KW - programs KW - graduate-level education KW - Sao Paulo Advanced School of Astrobiology KW - astrobiology KW - academic institutions KW - education KW - research KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1618132053?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Astrobiology&rft.atitle=Research+focus+group+activity+of+the+Sao+Paulo+Advanced+School+of+Astrobiology%3B+SPASA+2011&rft.au=Galante%2C+Douglas%3BRodrigues%2C+Fabio%3BLima%2C+Ivan+Glaucio+Paulino%3BDuarte%2C+Rubens+T+D&rft.aulast=Galante&rft.aufirst=Douglas&rft.date=2013-03-01&rft.volume=13&rft.issue=3&rft.spage=292&rft.isbn=&rft.btitle=&rft.title=Astrobiology&rft.issn=15311074&rft_id=info:doi/10.1089%2Fast.2013.0987 L2 - http://www.liebertpub.com/publication.aspx?pub_id=99 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 3 N1 - PubXState - NY N1 - Last updated - 2014-10-30 N1 - SubjectsTermNotLitGenreText - academic institutions; astrobiology; education; graduate-level education; programs; research; Sao Paulo Advanced School of Astrobiology DO - http://dx.doi.org/10.1089/ast.2013.0987 ER - TY - JOUR T1 - Tidal Venuses; triggering a climate catastrophe via tidal heating AN - 1618132001; 2014-084186 JF - Astrobiology AU - Barnes, Rory AU - Mullins, Kristina AU - Goldblatt, Colin AU - Meadows, Victoria S AU - Kasting, James F AU - Heller, Rene Y1 - 2013/03// PY - 2013 DA - March 2013 SP - 225 EP - 250 PB - Mary Ann Liebert, Larchmont, NY VL - 13 IS - 3 SN - 1531-1074, 1531-1074 KW - extrasolar planets KW - orbits KW - Venus KW - tidal heating KW - global change KW - simulation KW - Gleise 667C KW - tidal Venuses KW - terrestrial planets KW - mass KW - stellar radiation KW - planets KW - habitat KW - stars KW - hydrogen KW - heat sources KW - heating KW - water content KW - greenhouse effect KW - climate KW - catastrophes KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1618132001?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Astrobiology&rft.atitle=Tidal+Venuses%3B+triggering+a+climate+catastrophe+via+tidal+heating&rft.au=Barnes%2C+Rory%3BMullins%2C+Kristina%3BGoldblatt%2C+Colin%3BMeadows%2C+Victoria+S%3BKasting%2C+James+F%3BHeller%2C+Rene&rft.aulast=Barnes&rft.aufirst=Rory&rft.date=2013-03-01&rft.volume=13&rft.issue=3&rft.spage=225&rft.isbn=&rft.btitle=&rft.title=Astrobiology&rft.issn=15311074&rft_id=info:doi/10.1089%2Fast.2012.0851 L2 - http://www.liebertpub.com/publication.aspx?pub_id=99 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 181 N1 - PubXState - NY N1 - Document feature - illus. N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-10-30 N1 - SubjectsTermNotLitGenreText - catastrophes; climate; extrasolar planets; Gleise 667C; global change; greenhouse effect; habitat; heat sources; heating; hydrogen; mass; orbits; planets; simulation; stars; stellar radiation; terrestrial planets; tidal heating; tidal Venuses; Venus; water content DO - http://dx.doi.org/10.1089/ast.2012.0851 ER - TY - JOUR T1 - A hit and a miss; Earth takes its chances in the solar system's shooting gallery AN - 1520103146; 2014-028448 JF - Natural History AU - Yeomans, Donald K Y1 - 2013/03// PY - 2013 DA - March 2013 SP - 18 EP - 25 PB - American Museum of Natural History, New York, NY VL - 121 IS - 2 SN - 0028-0712, 0028-0712 KW - Tempel 1 Comet KW - asteroids KW - near-Earth asteroids KW - orbits KW - long-period comets KW - late heavy bombardment KW - Jupiter KW - Russian Federation KW - planetesimals KW - giant planets KW - meteors KW - Deep Impact Mission KW - Saturn KW - gravity field KW - Commonwealth of Independent States KW - Sun KW - spacecraft KW - outer planets KW - Apollo asteroids KW - solar system KW - shock waves KW - near-Earth objects KW - Earth KW - asteroid belts KW - explosions KW - Shoemaker-Levy 9 Comet KW - impacts KW - solar nebula KW - models KW - planets KW - Chelyabinsk Russian Federation KW - comets KW - natural hazards KW - fireballs KW - Aten asteroids KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1520103146?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Natural+History&rft.atitle=A+hit+and+a+miss%3B+Earth+takes+its+chances+in+the+solar+system%27s+shooting+gallery&rft.au=Yeomans%2C+Donald+K&rft.aulast=Yeomans&rft.aufirst=Donald&rft.date=2013-03-01&rft.volume=121&rft.issue=2&rft.spage=18&rft.isbn=&rft.btitle=&rft.title=Natural+History&rft.issn=00280712&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - PubXState - NY N1 - Document feature - illus. N1 - Last updated - 2014-05-01 N1 - CODEN - NAHIAY N1 - SubjectsTermNotLitGenreText - Apollo asteroids; asteroid belts; asteroids; Aten asteroids; Chelyabinsk Russian Federation; comets; Commonwealth of Independent States; Deep Impact Mission; Earth; explosions; fireballs; giant planets; gravity field; impacts; Jupiter; late heavy bombardment; long-period comets; meteors; models; natural hazards; near-Earth asteroids; near-Earth objects; orbits; outer planets; planetesimals; planets; Russian Federation; Saturn; shock waves; Shoemaker-Levy 9 Comet; solar nebula; solar system; spacecraft; Sun; Tempel 1 Comet ER - TY - JOUR T1 - Surface reflectance of Mars observed by CRISM/MRO; 1, Multi-angle approach for retrieval of surface reflectance from CRISM observations (MARS-ReCo) AN - 1469629171; 2013-097845 AB - This article addresses the correction for aerosol effects in near-simultaneous multi-angle observations acquired by the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) aboard the Mars Reconnaissance Orbiter. In the targeted mode, CRISM senses the surface of Mars using 11 viewing angles, which allow it to provide unique information on the scattering properties of surface materials. In order to retrieve these data, however, appropriate strategies must be used to compensate the signal sensed by CRISM for aerosol contribution. This correction is particularly challenging as the photometric curve of these suspended particles is often correlated with the also anisotropic photometric curve of materials at the surface. This article puts forward an innovative radiative transfer-based method named Multi-angle Approach for Retrieval of Surface Reflectance from CRISM Observations (MARS-ReCO). The proposed method retrieves photometric curves of surface materials in reflectance units after removing aerosol contribution. MARS-ReCO represents a substantial improvement regarding previous techniques as it takes into consideration the anisotropy of the surface, thus providing more realistic surface products. Furthermore, MARS-ReCO is fast and provides error bars on the retrieved surface reflectance. The validity and accuracy of MARS-ReCO is explored in a sensitivity analysis based on realistic synthetic data. According to experiments, MARS-ReCO provides accurate results (up to 10% reflectance error) under favorable acquisition conditions. In the companion article, photometric properties of Martian materials are retrieved using MARS-ReCO and validated using in situ measurements acquired during the Mars Exploration Rovers mission. Abstract Copyright (2012), American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Ceamanos, X AU - Doute, S AU - Fernando, J AU - Schmidt, F AU - Pinet, P AU - Lyapustin, A Y1 - 2013/03// PY - 2013 DA - March 2013 SP - 514 EP - 533 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 3 SN - 2169-9097, 2169-9097 KW - imagery KW - CRISM KW - atmosphere KW - Mars KW - Mars Orbiter Camera KW - terrestrial planets KW - Mars Exploration Rover KW - planets KW - photometry KW - surface features KW - aerosols KW - corrections KW - reflectance KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1469629171?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Surface+reflectance+of+Mars+observed+by+CRISM%2FMRO%3B+1%2C+Multi-angle+approach+for+retrieval+of+surface+reflectance+from+CRISM+observations+%28MARS-ReCo%29&rft.au=Ceamanos%2C+X%3BDoute%2C+S%3BFernando%2C+J%3BSchmidt%2C+F%3BPinet%2C+P%3BLyapustin%2C+A&rft.aulast=Ceamanos&rft.aufirst=X&rft.date=2013-03-01&rft.volume=118&rft.issue=3&rft.spage=514&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1029%2F2012JE004195 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 - 2013-01-01 N1 - Number of references - 58 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - aerosols; atmosphere; corrections; CRISM; imagery; Mars; Mars Exploration Rover; Mars Orbiter Camera; photometry; planets; reflectance; remote sensing; surface features; terrestrial planets DO - http://dx.doi.org/10.1029/2012JE004195 ER - TY - JOUR T1 - Development, importance, and effect of a ground truth correction for the Moon Mineralogy Mapper reflectance data set AN - 1469627969; 2013-097837 AB - We evaluate the effect and importance of a ground truth correction for the Moon Mineralogy Mapper (M (super 3) ) level 2 (reflectance) data set. This correction is derived from extensive laboratory characterizations of mature feldspathic lunar soils and is designed to improve the accuracy of 1 mu m absorption features in M (super 3) reflectance data. To evaluate the correction, the band strength across a subset of the feldspathic highlands terrane (FHT) is analyzed with M (super 3) imaging spectroscopy data. Using M (super 3) reflectance data and derived products, we find significant differences in band strength and shape between M (super 3) observations collected over identical terrain but under different observational and operational conditions. The ground truth correction minimizes these differences in 1 mu m band strengths and also brings the 1 mu m band strengths measured with M (super 3) data into closer agreement with laboratory measurements of lunar soil samples. Although the FHT region studied was found to have very low band strengths, the M (super 3) ground truth correction results in overall stronger absorption features for all mature soils relative to uncorrected level 2 (reflectance) data for the same region. These differences between M (super 3) data collected under different operational conditions and the effects of the ground truth correction, while minor in appearance, can have significant implications for interpretations of any regional soil analyses with M (super 3) data that rely on absolute 1 mu m absorption feature strength. The M (super 3) ground truth correction corrects only wavelengths below approximately 1500 nm, and comparisons between corrected and uncorrected wavelengths must be done with caution. Abstract Copyright (2013), American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Isaacson, Peter J AU - Petro, Noah E AU - Pieters, Carle M AU - Besse, Sebastien AU - Boardman, Joseph W AU - Clark, Roger N AU - Green, Robert O AU - Lundeen, Sarah AU - Malaret, Erick AU - McLaughlin, Stephanie AU - Sunshine, Jessica M AU - Taylor, Lawrence A Y1 - 2013/03// PY - 2013 DA - March 2013 SP - 369 EP - 381 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 3 SN - 2169-9097, 2169-9097 KW - silicates KW - imagery KW - Moon KW - calibration KW - terranes KW - lunar highlands KW - absorption KW - ground truth KW - Moon Mineralogy Mapper KW - framework silicates KW - corrections KW - spectroscopy KW - reflectance KW - feldspar group KW - remote sensing KW - lunar soils KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1469627969?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Development%2C+importance%2C+and+effect+of+a+ground+truth+correction+for+the+Moon+Mineralogy+Mapper+reflectance+data+set&rft.au=Isaacson%2C+Peter+J%3BPetro%2C+Noah+E%3BPieters%2C+Carle+M%3BBesse%2C+Sebastien%3BBoardman%2C+Joseph+W%3BClark%2C+Roger+N%3BGreen%2C+Robert+O%3BLundeen%2C+Sarah%3BMalaret%2C+Erick%3BMcLaughlin%2C+Stephanie%3BSunshine%2C+Jessica+M%3BTaylor%2C+Lawrence+A&rft.aulast=Isaacson&rft.aufirst=Peter&rft.date=2013-03-01&rft.volume=118&rft.issue=3&rft.spage=369&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2Fjgre.20048 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 - 2013-01-01 N1 - Number of references - 99 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - absorption; calibration; corrections; feldspar group; framework silicates; ground truth; imagery; lunar highlands; lunar soils; Moon; Moon Mineralogy Mapper; reflectance; remote sensing; silicates; spectroscopy; terranes DO - http://dx.doi.org/10.1002/jgre.20048 ER - TY - JOUR T1 - Roughness and near-surface density of Mars from SHARAD radar echoes AN - 1469627665; 2013-097841 AB - We present a technique for estimating Mars topographic roughness on horizontal scales from about 10 m to 100 m using Shallow Radar (SHARAD) sounding data. Our results offer a view of surface properties complementary to Mars Orbiter Laser Altimeter (MOLA) pulse-width or baseline roughness maps and can be compared to SHARAD peak-echo properties to infer deviations from the average near-surface density. Latitudinal averaging of SHARAD-derived roughness over Arabia and Noachis Terrae shows good agreement with MOLA-derived roughness and provides clear evidence for latitude-dependent mantling deposits previously inferred from image data. In northwestern Gordii Dorsum, we find that bulk density in at least the upper few meters is significantly lower than in other units of the Medusae Fossae Formation. We observe the same behavior indicative of low near-surface density in wind-eroded crater fill in the southern highlands. Combining surface-properties analysis, subsurface sounding, and high-resolution optical images, we show that the Pavonis Mons fan-shaped deposit differs significantly from lobate debris aprons which SHARAD has shown to be ice-cored. There are no internal radar reflections from the smooth-facies portion of the Pavonis Mons fan-shaped deposit, and we suggest that these deposits are either quite thin or have little dielectric (i.e., density) contrast with the underlying terrain. Future application of these techniques can identify other low-density units across Mars, assist in the mapping of regional volatile-rich mantling units, and provide new constraints on the physical properties of the polar layered terrain. Abstract Copyright (2013), American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Campbell, Bruce A AU - Putzig, Nathaniel E AU - Carter, Lynn M AU - Morgan, Gareth A AU - Phillips, Roger J AU - Plaut, Jeffrey J Y1 - 2013/03// PY - 2013 DA - March 2013 SP - 436 EP - 450 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 3 SN - 2169-9097, 2169-9097 KW - polar regions KW - density KW - SHARAD KW - roughness KW - radar methods KW - Mars KW - Pavonis Mons KW - terrestrial planets KW - planets KW - topography KW - Medusae Fossae Formation KW - Noachis Terra KW - Arabia Regio KW - surface features KW - MOLA KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1469627665?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Roughness+and+near-surface+density+of+Mars+from+SHARAD+radar+echoes&rft.au=Campbell%2C+Bruce+A%3BPutzig%2C+Nathaniel+E%3BCarter%2C+Lynn+M%3BMorgan%2C+Gareth+A%3BPhillips%2C+Roger+J%3BPlaut%2C+Jeffrey+J&rft.aulast=Campbell&rft.aufirst=Bruce&rft.date=2013-03-01&rft.volume=118&rft.issue=3&rft.spage=436&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2Fjgre.20050 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 - 2013-01-01 N1 - Number of references - 62 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - Arabia Regio; density; Mars; Medusae Fossae Formation; MOLA; Noachis Terra; Pavonis Mons; planets; polar regions; radar methods; remote sensing; roughness; SHARAD; surface features; terrestrial planets; topography DO - http://dx.doi.org/10.1002/jgre.20050 ER - TY - JOUR T1 - Cryovolcanism on Titan; new results from Cassini radar and VIMS AN - 1469627024; 2013-097840 AB - The existence of cryovolcanic features on Titan has been the subject of some controversy. Here we use observations from the Cassini RADAR, including Synthetic Aperture Radar (SAR) imaging, radiometry, and topographic data as well as compositional data from the Visible and Infrared Mapping Spectrometer (VIMS) to reexamine several putative cryovolcanic features on Titan in terms of likely processes of origin (fluvial, cryovolcanic, or other). We present evidence to support the cryovolcanic origin of features in the region formerly known as Sotra Facula, which includes the deepest pit so far found on Titan (now known as Sotra Patera), flow-like features (Mohini Fluctus), and some of the highest mountains on Titan (Doom and Erebor Montes). We interpret this region to be a cryovolcanic complex of multiple cones, craters, and flows. However, we find that some other previously supposed cryovolcanic features were likely formed by other processes. Cryovolcanism is still a possible formation mechanism for several features, including the flow-like units in Hotei Regio. We discuss implications for eruption style and composition of cryovolcanism on Titan. Our analysis shows the great value of combining data sets when interpreting Titan's geology and in particular stresses the value of RADAR stereogrammetry when combined with SAR imaging and VIMS. Abstract Copyright (2013, American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Lopes, R M C AU - Kirk, R L AU - Mitchell, K L AU - LeGall, A AU - Barnes, J W AU - Hayes, A AU - Kargel, J AU - Wye, L AU - Radebaugh, J AU - Stofan, E R AU - Janssen, M A AU - Neish, C D AU - Wall, S D AU - Wood, C A AU - Lunine, J I AU - Malaska, M J Y1 - 2013/03// PY - 2013 DA - March 2013 SP - 416 EP - 435 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 3 SN - 2169-9097, 2169-9097 KW - icy satellites KW - cryovolcanism KW - imagery KW - radar methods KW - mapping KW - infrared spectra KW - Cassini-Huygens Mission KW - SAR KW - Erebor Mountain KW - Doom Mountain KW - surface features KW - Titan Satellite KW - spectra KW - Sotra Facula KW - satellites KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1469627024?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Cryovolcanism+on+Titan%3B+new+results+from+Cassini+radar+and+VIMS&rft.au=Lopes%2C+R+M+C%3BKirk%2C+R+L%3BMitchell%2C+K+L%3BLeGall%2C+A%3BBarnes%2C+J+W%3BHayes%2C+A%3BKargel%2C+J%3BWye%2C+L%3BRadebaugh%2C+J%3BStofan%2C+E+R%3BJanssen%2C+M+A%3BNeish%2C+C+D%3BWall%2C+S+D%3BWood%2C+C+A%3BLunine%2C+J+I%3BMalaska%2C+M+J&rft.aulast=Lopes&rft.aufirst=R+M&rft.date=2013-03-01&rft.volume=118&rft.issue=3&rft.spage=416&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2Fjgre.20062 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 - 2013-01-01 N1 - Number of references - 123 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - Cassini-Huygens Mission; cryovolcanism; Doom Mountain; Erebor Mountain; icy satellites; imagery; infrared spectra; mapping; radar methods; remote sensing; SAR; satellites; Sotra Facula; spectra; surface features; Titan Satellite DO - http://dx.doi.org/10.1002/jgre.20062 ER - TY - JOUR T1 - Investigating the origin of candidate lava channels on Mercury with MESSENGER data; theory and observations AN - 1469627019; 2013-097843 AB - Volcanic plains identified on Mercury are morphologically similar to lunar mare plains but lack constructional and erosional features that are prevalent on other terrestrial planetary bodies. We analyzed images acquired by the MESSENGER spacecraft to identify features on Mercury that may have formed by lava erosion. We used analytical models to estimate eruption flux, erosion rate, and eruption duration to characterize the formation of candidate erosional features, and we compared results with analyses of similar features observed on Earth, the Moon, and Mars. Results suggest that lava erupting at high effusion rates similar to those required to form the Teepee Butte Member of the Columbia River flood basalts (0.1-1.2 X 10 (super 6) m (super 3) s (super -1) ) would have been necessary to form wide valleys (>15 km wide) observed in Mercury's northern hemisphere, first by mechanical erosion to remove an upper regolith layer, then by thermal erosion once a lower rigid layer was encountered. Alternatively, results suggest that lava erupting at lower effusion rates similar to those predicted to have formed Rima Prinz on the Moon (4400 m (super 3) s (super -1) ) would have been required to form, via thermal erosion, narrower channels (<7 km wide) observed on Mercury. Although these results indicate how erosion might have occurred on Mercury, the observed features may have formed by other processes, including lava flooding terrain sculpted during the formation of the Caloris basin in the case of the wide valleys, or impact melt carving channels into impact ejecta in the case of the narrower channels. Abstract Copyright (2012), American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Hurwitz, Debra M AU - Head, James W AU - Byrne, Paul K AU - Xiao, Zhiyong AU - Solomon, Sean C AU - Zuber, Maria T AU - Smith, David E AU - Neumann, Gregory A Y1 - 2013/03// PY - 2013 DA - March 2013 SP - 471 EP - 486 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 3 SN - 2169-9097, 2169-9097 KW - flood basalts KW - volcanic rocks KW - impact features KW - Caloris Basin KW - igneous rocks KW - Cenozoic KW - volcanic features KW - spacecraft KW - Mercury Planet KW - basalts KW - interplanetary comparison KW - North America KW - Earth KW - Moon KW - lava channels KW - Columbia River Basalt Group KW - channels KW - ejecta KW - Miocene KW - terrestrial planets KW - planets KW - Tertiary KW - Rima Prinz KW - Neogene KW - MESSENGER Mission KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1469627019?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Investigating+the+origin+of+candidate+lava+channels+on+Mercury+with+MESSENGER+data%3B+theory+and+observations&rft.au=Hurwitz%2C+Debra+M%3BHead%2C+James+W%3BByrne%2C+Paul+K%3BXiao%2C+Zhiyong%3BSolomon%2C+Sean+C%3BZuber%2C+Maria+T%3BSmith%2C+David+E%3BNeumann%2C+Gregory+A&rft.aulast=Hurwitz&rft.aufirst=Debra&rft.date=2013-03-01&rft.volume=118&rft.issue=3&rft.spage=471&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1029%2F2012JE004103 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 - 2013-01-01 N1 - Number of references - 108 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - basalts; Caloris Basin; Cenozoic; channels; Columbia River Basalt Group; Earth; ejecta; flood basalts; igneous rocks; impact features; interplanetary comparison; lava channels; Mercury Planet; MESSENGER Mission; Miocene; Moon; Neogene; North America; planets; Rima Prinz; spacecraft; terrestrial planets; Tertiary; volcanic features; volcanic rocks DO - http://dx.doi.org/10.1029/2012JE004103 ER - TY - JOUR T1 - Guidelines for noninvasive ventilation in acute respiratory failure AN - 1442195180 JF - Indian Journal of Critical Care Medicine AU - Chawla, Rajesh AU - Chaudhry, Dhruva AU - Kansal, Sudha AU - Khilnani, G AU - Mani, R AU - Nasa, Prashant AU - Prayag, Shirish AU - Ramakrishnan, N AU - Sharma, Rakesh AU - Sidhu, U AU - Suri, J Y1 - 2013/03// PY - 2013 DA - Mar 2013 SP - 42 EP - 70 CY - Mumbai PB - Medknow Publications & Media Pvt. Ltd. VL - 17 SN - 09725229 KW - Medical Sciences UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1442195180?accountid=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=Guidelines+for+noninvasive+ventilation+in+acute+respiratory+failure&rft.au=Chawla%2C+Rajesh%3BChaudhry%2C+Dhruva%3BKansal%2C+Sudha%3BKhilnani%2C+G%3BMani%2C+R%3BNasa%2C+Prashant%3BPrayag%2C+Shirish%3BRamakrishnan%2C+N%3BSharma%2C+Rakesh%3BSidhu%2C+U%3BSuri%2C+J&rft.aulast=Chawla&rft.aufirst=Rajesh&rft.date=2013-03-01&rft.volume=17&rft.issue=&rft.spage=42&rft.isbn=&rft.btitle=&rft.title=Indian+Journal+of+Critical+Care+Medicine&rft.issn=09725229&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright Medknow Publications & Media Pvt Ltd Mar 2013 N1 - Last updated - 2016-06-11 ER - TY - JOUR T1 - Aqua-planet simulations of the formation of the South Atlantic convergence zone AN - 1434033345; 18492808 AB - The impact of Amazon Basin convection and cold fronts on the formation and maintenance of the South Atlantic convergence zone (SACZ) is studied using aqua-planet simulations with a general circulation model. In the model, a circular patch of warm sea-surface temperature (SST) is used to mimic the effect of the Amazon Basin on South American monsoon convection. The aqua-planet simulations were designed to study the effect of the strength and latitude of Amazon Basin convection on the formation of the SACZ. The simulations indicate that the strength of the SACZ increases as the Amazon convection intensifies and is moved away from the equator. Of the two controls studied here, the latitude of the Amazon convection exerts the strongest effect on the strength of the SACZ. An analysis of the synoptic-scale variability in the simulations shows the importance of frontal systems in the formation of the aqua-planet SACZ. Composite time series of frontal systems that occurred in the simulations show that a robust SACZ occurs when fronts penetrate into the subtropics and become stationary there as they cross eastward of the longitude of the Amazon Basin. Moisture convergence associated with these frontal systems produces rainfall not along the model SACZ region and along a large portion of the northern model Amazon Basin. Simulations in which the warm SST patch was too weak or too close to the equator did not produce frontal systems that extended into the tropics and became stationary, and did not form a SACZ. In the model, the SACZ forms as Amazon Basin convection strengthens and migrates far enough southward to allow frontal systems to penetrate into the tropics and stall over South America. This result is in agreement with observations that the SACZ tends to form after the onset of the monsoon season in the Amazon Basin. JF - International Journal of Climatology AU - Nieto Ferreira, Rosana AU - Chao, Winston C AD - Global Modeling and Assimilation Office, NASA/Goddard Space Flight Center, Greenbelt, MD, USA., ferreirar@ecu.edu Y1 - 2013/03// PY - 2013 DA - Mar 2013 SP - 615 EP - 628 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 33 IS - 3 SN - 0899-8418, 0899-8418 KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - South American monsoon KW - cold fronts KW - SACZ KW - Convection KW - Convergence zones KW - Variability KW - Convection development KW - Time series analysis KW - Convergence KW - Ocean-atmosphere system KW - Seasonal variability KW - Climatology KW - Sea surface temperatures KW - Abiotic factors KW - Temperature effects KW - Marine KW - Weather KW - Simulation Analysis KW - AS, South Atlantic KW - Atmospheric circulation KW - South Atlantic Convergence Zone KW - Maintenance KW - Model Studies KW - Strength KW - Numerical simulations KW - South America, Amazon R. KW - General circulation models KW - Latitudinal variations KW - Monsoons KW - Q2 09243:Structure, mechanics and thermodynamics KW - O 2010:Physical Oceanography KW - SW 5010:Network design KW - M2 551.465:Structure/Dynamics/Circulation (551.465) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1434033345?accountid=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=International+Journal+of+Climatology&rft.atitle=Aqua-planet+simulations+of+the+formation+of+the+South+Atlantic+convergence+zone&rft.au=Nieto+Ferreira%2C+Rosana%3BChao%2C+Winston+C&rft.aulast=Nieto+Ferreira&rft.aufirst=Rosana&rft.date=2013-03-01&rft.volume=33&rft.issue=3&rft.spage=615&rft.isbn=&rft.btitle=&rft.title=International+Journal+of+Climatology&rft.issn=08998418&rft_id=info:doi/10.1002%2Fjoc.3457 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-09-01 N1 - Last updated - 2014-12-11 N1 - SubjectsTermNotLitGenreText - Temperature effects; Convergence zones; Convection; Latitudinal variations; Ocean-atmosphere system; Atmospheric circulation; Climatology; Abiotic factors; Monsoons; Numerical simulations; Convergence; General circulation models; Seasonal variability; Convection development; Time series analysis; Sea surface temperatures; South Atlantic Convergence Zone; Weather; Variability; Strength; Simulation Analysis; Maintenance; Model Studies; South America, Amazon R.; AS, South Atlantic; Marine DO - http://dx.doi.org/10.1002/joc.3457 ER - TY - JOUR T1 - Preservation and detection of microstructural and taxonomic correlations in the carbon isotopic compositions of individual Precambrian microfossils AN - 1420514935; 2013-064956 AB - Here we present techniques for, and new data from, in situ carbon isotope (delta (super 13) C) analysis of Precambrian permineralized microscopic fossils with a reproducibility of 1-2 ppm using secondary ion mass spectrometry (SIMS). Individual microfossils, selected for their excellent preservation, were analyzed in petrographic thin sections of stromatolitic cherts from the Proterozoic Gunflint ( nearly equal 1880 Ma), Bitter Springs ( nearly equal 830 Ma), Min'yar ( nearly equal 740 Ma), and Chichkan ( nearly equal 775 Ma) Formations. The range of delta (super 13) C values (-34.6 ppm to -22.1 ppm VPDB) among the 46 individuals analyzed falls within that expected for photoautotrophic carbon fixation by ribulose bisphosphate carboxylase (RuBisCO), consistent with morphology-based taxonomic assignments for these specimens. Microfossils classified as cyanobacteria from the Gunflint, Bitter Springs, and Min'yar Formations (for which published carbonate carbon isotope data can be used to estimate the delta (super 13) C of the original dissolved inorganic carbon substrate) exhibit a consistent nearly equal 19 ppm total fractionation (delta (super 13) C of dissolved inorganic carbon-delta (super 13) C of biomass) similar to that observed in living cyanobacteria, over a wide range of delta (super 13) C (sub carb) values (-2.9 ppm to 3.4 ppm). In stromatolitic chert of the Min'yar Formation, morphologically diverse microfossils preserved in a nearly equal 1 mm (super 2) part of a microbial mat exhibit systematic isotopic differences among and within taxa that correlate with their morphologically inferred biological affinities and suggest that isotopic signatures of their original biosynthetic processes (e.g., lipid and peptidoglycan synthesis) are preserved. Isotopic offsets consistent with the different RuBisCO-based fractionations typical of cyanobacteria and photosynthetic eukaryotes are documented by the differing delta (super 13) C values of a colonial cyanobacterium (-22.6 + or - 0.5 ppm) and a phytoplanktonic protistan acritarch (-28.9 + or - 1.0 ppm) situated <1 cm apart in the stromatolitic Chichkan chert. These findings show for the first time the possibility of using in situ isotopic microanalysis of fossil microbial mats and ancient sediments in order to distinguish metabolic fingerprints within complex microbial ecosystems and consortia. Abstract Copyright (2013) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Williford, Kenneth H AU - Ushikubo, Takayuki AU - Schopf, J William AU - Lepot, Kevin AU - Kitajima, Kouki AU - Valley, John W Y1 - 2013/03/01/ PY - 2013 DA - 2013 Mar 01 SP - 165 EP - 182 PB - Elsevier, New York, NY VL - 104 SN - 0016-7037, 0016-7037 KW - upper Precambrian KW - ion probe data KW - isotopes KW - banded iron formations KW - mass spectra KW - plankton KW - stable isotopes KW - paleontology KW - paleoecology KW - sedimentary rocks KW - carbon KW - Australia KW - taxonomy KW - spectra KW - chemical composition KW - sedimentary structures KW - cyanobacteria KW - chemically precipitated rocks KW - Chichkan Formation KW - Bitter Springs Formation KW - Precambrian KW - eukaryotes KW - Australasia KW - assemblages KW - isotope ratios KW - biogenic structures KW - C-13/C-12 KW - Proterozoic KW - Min'yar Formation KW - Ontario KW - stromatolites KW - paleoenvironment KW - iron formations KW - Canada KW - palynomorphs KW - chert KW - Eastern Canada KW - microfossils KW - Gunflint Iron Formation KW - acritarchs KW - 08:General paleontology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1420514935?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Preservation+and+detection+of+microstructural+and+taxonomic+correlations+in+the+carbon+isotopic+compositions+of+individual+Precambrian+microfossils&rft.au=Williford%2C+Kenneth+H%3BUshikubo%2C+Takayuki%3BSchopf%2C+J+William%3BLepot%2C+Kevin%3BKitajima%2C+Kouki%3BValley%2C+John+W&rft.aulast=Williford&rft.aufirst=Kenneth&rft.date=2013-03-01&rft.volume=104&rft.issue=&rft.spage=165&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2012.11.005 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2013-01-01 N1 - Number of references - 92 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2013-08-15 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - acritarchs; assemblages; Australasia; Australia; banded iron formations; biogenic structures; Bitter Springs Formation; C-13/C-12; Canada; carbon; chemical composition; chemically precipitated rocks; chert; Chichkan Formation; cyanobacteria; Eastern Canada; eukaryotes; Gunflint Iron Formation; ion probe data; iron formations; isotope ratios; isotopes; mass spectra; microfossils; Min'yar Formation; Ontario; paleoecology; paleoenvironment; paleontology; palynomorphs; plankton; Precambrian; Proterozoic; sedimentary rocks; sedimentary structures; spectra; stable isotopes; stromatolites; taxonomy; upper Precambrian DO - http://dx.doi.org/10.1016/j.gca.2012.11.005 ER - TY - JOUR T1 - Investigation of UH-60A Rotor Performance and Loads at High Advance Ratios AN - 1412506879; 18161616 AB - Wind tunnel measurements of the performance, airloads, and structural loads of a full-scale UH-60A Black Hawk main rotor operating at high advance ratios (up to 1.0) are compared with calculations obtained using the comprehensive rotorcraft analysis Comprehensive Analytical Model of Rotorcraft Aerodynamics and Dynamics II to understand physics and quantify this comprehensive code's accuracy and reliability in the prediction of rotor performance and loads at high advance ratios. Detailed comparisons are made on rotor thrust, control angles, power, and section loads to illustrate and understand unique aeromechanics phenomena in this regime. The analysis correctly predicts the thrust reversal with collective at high advance ratios. Rotor induced plus profile power is also reasonably well predicted with proper modeling of the shank. Airloads and structural loads correlation is fair. A significant underprediction of 2-per-revolution structural loads is observed. JF - Journal of Aircraft AU - Yeo, Hyeonsoo AD - U.S. Army Aeroflightdynamics Directorate (AMRDEC), Ames Research Center, Moffett Field, CA 94035 Y1 - 2013/03// PY - 2013 DA - Mar 2013 SP - 576 EP - 589 PB - American Institute of Aeronautics and Astronautics, The Aerospace Center, 370 L'Enfant Promenade, SW Washington DC 20024 United States VL - 50 IS - 2 SN - 0021-8669, 0021-8669 KW - Health & Safety Science Abstracts KW - Prediction KW - Aircraft KW - Aerodynamics KW - Wind tunnels KW - Helicopters KW - H 2000:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1412506879?accountid=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=conference&rft.jtitle=Journal+of+Aircraft&rft.atitle=Investigation+of+UH-60A+Rotor+Performance+and+Loads+at+High+Advance+Ratios&rft.au=Yeo%2C+Hyeonsoo&rft.aulast=Yeo&rft.aufirst=Hyeonsoo&rft.date=2013-03-01&rft.volume=50&rft.issue=2&rft.spage=576&rft.isbn=&rft.btitle=&rft.title=Journal+of+Aircraft&rft.issn=00218669&rft_id=info:doi/10.2514%2F1.C031958 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-07-01 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Prediction; Aircraft; Aerodynamics; Wind tunnels; Helicopters DO - http://dx.doi.org/10.2514/1.C031958 ER - TY - JOUR T1 - Extraterrestrial amino acids identified in metal-rich CH and CB carbonaceous chondrites from Antarctica AN - 1366816770; 2013-047720 AB - Carbonaceous chondrites contain numerous indigenous organic compounds and could have been an important source of prebiotic compounds required for the origin of life on Earth or elsewhere. Extraterrestrial amino acids have been reported in five of the eight groups of carbonaceous chondrites and are most abundant in CI, CM, and CR chondrites but are also present in the more thermally altered CV and CO chondrites. We report the abundance, distribution, and enantiomeric and isotopic compositions of simple primary amino acids in six metal-rich CH and CB carbonaceous chondrites that have not previously been investigated for amino acids: Allan Hills (ALH) 85085 (CH3), Pecora Escarpment (PCA) 91467 (CH3), Patuxent Range (PAT) 91546 (CH3), MacAlpine Hills (MAC) 02675 (CBb), Miller Range (MIL) 05082 (CB), and Miller Range (MIL) 07411 (CB). Amino acid abundances and carbon isotopic values were obtained by using both liquid chromatography time-of-flight mass spectrometry and fluorescence, and gas chromatography isotope ratio mass spectrometry. The delta (super 13) C/ (super 12) C ratios of multiple amino acids fall outside of the terrestrial range and support their extraterrestrial origin. Extracts of CH chondrites were found to be particularly rich in amino acids (13-16 parts per million, ppm) while CB chondrite extracts had much lower abundances (0.2-2 ppm). The amino acid distributions of the CH and CB chondrites were distinct from the distributions observed in type 2 and 3 CM and CR chondrites and contained elevated levels of beta -, gamma -, and delta -amino acids compared to the corresponding alpha -amino acids, providing evidence that multiple amino acid formation mechanisms were important in CH and CB chondrites. Abstract Copyright The Meteoritical Society, 2013. JF - Meteoritics & Planetary Science AU - Burton, Aaron S AU - Elsila, Jamie E AU - Hein, Jason E AU - Glavin, Daniel P AU - Dworkin, Jason P Y1 - 2013/03// PY - 2013 DA - March 2013 SP - 390 EP - 402 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 3 SN - 1086-9379, 1086-9379 KW - Pecora Escarpment Meteorites KW - stony meteorites KW - isotopes KW - gas chromatograms KW - mass spectra KW - astrobiology KW - stable isotopes KW - life origin KW - meteorites KW - MIL 07411 KW - time-of-flight mass spectroscopy KW - Patuxent Range Meteorites KW - CB chondrites KW - carbon KW - amino acids KW - spectra KW - MIL 05082 KW - chondrites KW - Miller Range Meteorites KW - PCA 91467 KW - CH chondrites KW - isotope ratios KW - liquid chromatograms KW - C-13/C-12 KW - PAT 91546 KW - ALH 85085 KW - carbonaceous chondrites KW - MacAlpine Hills Meteorites KW - organic compounds KW - organic acids KW - Allan Hills Meteorites KW - Antarctica KW - chromatograms KW - MAC 02675 KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1366816770?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Extraterrestrial+amino+acids+identified+in+metal-rich+CH+and+CB+carbonaceous+chondrites+from+Antarctica&rft.au=Burton%2C+Aaron+S%3BElsila%2C+Jamie+E%3BHein%2C+Jason+E%3BGlavin%2C+Daniel+P%3BDworkin%2C+Jason+P&rft.aulast=Burton&rft.aufirst=Aaron&rft.date=2013-03-01&rft.volume=48&rft.issue=3&rft.spage=390&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12063 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2013-01-01 N1 - Number of references - 44 N1 - PubXState - AR N1 - Document feature - illus. incl. 7 tables N1 - Last updated - 2013-06-13 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - ALH 85085; Allan Hills Meteorites; amino acids; Antarctica; astrobiology; C-13/C-12; carbon; carbonaceous chondrites; CB chondrites; CH chondrites; chondrites; chromatograms; gas chromatograms; isotope ratios; isotopes; life origin; liquid chromatograms; MAC 02675; MacAlpine Hills Meteorites; mass spectra; meteorites; MIL 05082; MIL 07411; Miller Range Meteorites; organic acids; organic compounds; PAT 91546; Patuxent Range Meteorites; PCA 91467; Pecora Escarpment Meteorites; spectra; stable isotopes; stony meteorites; time-of-flight mass spectroscopy DO - http://dx.doi.org/10.1111/maps.12063 ER - TY - JOUR T1 - Source parameter inversion for recent great earthquakes from a decade-long observation of global gravity fields AN - 1366815735; 2013-046064 AB - We quantify gravity changes after great earthquakes present within the 10 year long time series of monthly Gravity Recovery and Climate Experiment (GRACE) gravity fields. Using spherical harmonic normal-mode formulation, the respective source parameters of moment tensor and double-couple were estimated. For the 2004 Sumatra-Andaman earthquake, the gravity data indicate a composite moment of 1.2 X 10 (super 23) N m with a dip of 10 degrees , in agreement with the estimate obtained at ultralong seismic periods. For the 2010 Maule earthquake, the GRACE solutions range from 2.0 to 2.7 X 10 (super 22) N m for dips of 12 degrees -24 degrees and centroid depths within the lower crust. For the 2011 Tohoku-Oki earthquake, the estimated scalar moments range from 4.1 to 6.1 X 10 (super 22) N m, with dips of 9 degrees -19 degrees and centroid depths within the lower crust. For the 2012 Indian Ocean strike-slip earthquakes, the gravity data delineate a composite moment of 1.9 X 10 (super 22) N m regardless of the centroid depth, comparing favorably with the total moment of the main ruptures and aftershocks. The smallest event we successfully analyzed with GRACE was the 2007 Bengkulu earthquake with M (sub 0) approximately 5.0 X 10 (super 21) N m. We found that the gravity data constrain the focal mechanism with the centroid only within the upper and lower crustal layers for thrust events. Deeper sources (i.e., in the upper mantle) could not reproduce the gravity observation as the larger rigidity and bulk modulus at mantle depths inhibit the interior from changing its volume, thus reducing the negative gravity component. Focal mechanisms and seismic moments obtained in this study represent the behavior of the sources on temporal and spatial scales exceeding the seismic and geodetic spectrum. Abstract Copyright (2013), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research AU - Han, Shin-Chan AU - Riva, Riccardo AU - Sauber, Jeanne AU - Okal, Emile Y1 - 2013/03// PY - 2013 DA - March 2013 SP - 1240 EP - 1267 PB - American Geophysical Union, Washington, DC VL - 118 IS - 3 SN - 0148-0227, 0148-0227 KW - geophysical surveys KW - time series analysis KW - statistical analysis KW - magnitude KW - geophysical methods KW - GRACE KW - strike-slip faults KW - displacements KW - satellite methods KW - spherical harmonic analysis KW - gravity methods KW - gravity field KW - seismicity KW - great earthquakes KW - surveys KW - tectonics KW - earthquakes KW - seismotectonics KW - faults KW - 19:Seismology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1366815735?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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&rft.atitle=Source+parameter+inversion+for+recent+great+earthquakes+from+a+decade-long+observation+of+global+gravity+fields&rft.au=Han%2C+Shin-Chan%3BRiva%2C+Riccardo%3BSauber%2C+Jeanne%3BOkal%2C+Emile&rft.aulast=Han&rft.aufirst=Shin-Chan&rft.date=2013-03-01&rft.volume=118&rft.issue=3&rft.spage=1240&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research&rft.issn=01480227&rft_id=info:doi/10.1002%2Fjgrb.50116 L2 - http://www.agu.org/journals/jgr/ 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 - 2013-01-01 N1 - Number of references - 35 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - displacements; earthquakes; faults; geophysical methods; geophysical surveys; GRACE; gravity field; gravity methods; great earthquakes; magnitude; satellite methods; seismicity; seismotectonics; spherical harmonic analysis; statistical analysis; strike-slip faults; surveys; tectonics; time series analysis DO - http://dx.doi.org/10.1002/jgrb.50116 ER - TY - JOUR T1 - Geophysical Journal International AN - 1351597968; 2013-041276 AB - Dickman argues that our model of the Mf ocean tide is unrealistic and that this invalidates conclusions regarding mantle anelasticity. His evidence is based on comparison with his own ocean modelling experiments and on his physical intuition regarding near-equilibrium tides. That evidence is unconvincing. Simple physical arguments alone are enough to rebut his main points. Furthermore, we test here his suggestion of increasing bottom-friction dissipation by a factor of 100 over our preferred solution, and we show that this results in unacceptable polar motion and poor agreement with independent tide-gauge data. In contrast, tests against independent data lend support to the realism of our Mf tide model and give confidence that our estimates of mantle anelasticity are reliable within stated error bounds. JF - Geophysical Journal International AU - Ray, Richard D AU - Egbert, Gary D Y1 - 2013/03// PY - 2013 DA - March 2013 SP - 1055 EP - 1058 PB - Oxford University Press on behalf of The Royal Astronomical Society, the Deutsche Geophysikalische Gesellschaft and the European Geophysical Society VL - 192 IS - 3 SN - 0956-540X, 0956-540X KW - tides KW - ocean circulation KW - rotation KW - mantle KW - anelasticity KW - algorithms KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1351597968?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Geophysical+Journal+International&rft.au=Ray%2C+Richard+D%3BEgbert%2C+Gary+D&rft.aulast=Ray&rft.aufirst=Richard&rft.date=2013-03-01&rft.volume=192&rft.issue=3&rft.spage=1055&rft.isbn=&rft.btitle=&rft.title=Geophysical+Journal+International&rft.issn=0956540X&rft_id=info:doi/10.1093%2Fgji%2Fggs078 L2 - http://www.blackwellpublishing.com/journal.asp?ref=0956-540X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 21 N1 - SuppNotes - For reference to discussion see Dickman, S. R., Geophysical Journal International, Vol. 192 No. 3, p. 1052-1054, 2013; for reference to original see Ray, R. D. and Egbert, G. D., Geophysical Journal International, Vol. 189, p. 400-413, 2012 N1 - Last updated - 2013-05-16 N1 - SubjectsTermNotLitGenreText - algorithms; anelasticity; mantle; ocean circulation; rotation; tides DO - http://dx.doi.org/10.1093/gji/ggs078 ER - TY - JOUR T1 - Integrating nondestructive inspections with autonomic logistics and structural health monitoring strategies for aeronautic systems AN - 1349434346; 17823246 AB - In recent years, there has been much activity concerning health management of aviation systems. Many government- and industry-based research projects/programs are focused on integrated vehicle health management strategies that include sensor development for automated or manual fault detection, diagnostics, prognostics to define remaining useful life, as well as mitigation plans for continued safe operation during a fault. The overall objectives for such activities include increased safety as well as efficient and economic operation of an aircraft fleet. Currently, to assess structural faults, visual inspections and/or nondestructive inspection techniques are utilized as a required routine for certain design and life management strategies. The inspections are manually involved and are carried out during aircraft downtime (e.g. on the runway or nightly hangar maintenance) or during a more extensive aircraft overhaul. Even with the potential of automated structural health monitoring within an integrated vehicle health management system, it is foreseen that manual and nondestructive inspections will continue to be an integral part of fleet life management. This article addresses and clarifies the role of nondestructive inspections in aircraft life management and its potential inclusion in future integrated vehicle health management systems. JF - Journal of Intelligent Material Systems and Structures AU - Gyekenyesi, Andrew AD - Ohio Aerospace Institute/NASA Glenn Research Center at Lewis Field, Cleveland, OH, USA Y1 - 2013/03// PY - 2013 DA - Mar 2013 SP - 574 EP - 583 PB - Sage Publications Ltd., 6 Bonhill St. London EC2A 4PU United Kingdom VL - 24 IS - 5 SN - 1045-389X, 1045-389X KW - Health & Safety Science Abstracts KW - Autonomic structures KW - structural health monitoring KW - sensor KW - Mitigation KW - Aircraft KW - Safety engineering KW - Sensors KW - Economics KW - Inspection KW - Maintenance KW - H 2000:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1349434346?accountid=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=Journal+of+Intelligent+Material+Systems+and+Structures&rft.atitle=Integrating+nondestructive+inspections+with+autonomic+logistics+and+structural+health+monitoring+strategies+for+aeronautic+systems&rft.au=Gyekenyesi%2C+Andrew&rft.aulast=Gyekenyesi&rft.aufirst=Andrew&rft.date=2013-03-01&rft.volume=24&rft.issue=5&rft.spage=574&rft.isbn=&rft.btitle=&rft.title=Journal+of+Intelligent+Material+Systems+and+Structures&rft.issn=1045389X&rft_id=info:doi/10.1177%2F1045389X12464281 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-01 N1 - Number of references - 35 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Mitigation; Sensors; Safety engineering; Aircraft; Economics; Inspection; Maintenance DO - http://dx.doi.org/10.1177/1045389X12464281 ER - TY - JOUR T1 - Seasonal melting and the formation of sedimentary rocks on Mars, with predictions for the Gale Crater mound AN - 1347455754; 2013-036548 AB - A model for the formation and distribution of sedimentary rocks on Mars is proposed. In this model (ISEE-Mars), the rate-limiting step is supply of liquid water from seasonal melting of snow or ice. The model is run for a O(10 (super 2) ) mbar pure CO (sub 2) atmosphere, dusty snow, and solar luminosity reduced by 23%. For these conditions snow melts only near the equator, when obliquity and eccentricity are high, and when perihelion occurs near equinox. These requirements for melting are satisfied by 0.01-20% of the probability distribution of Mars' past spin-orbit parameters. This fraction is small, consistent with the geologic record of metastable surface liquid water acting as a "wet-pass filter" of Mars climate history, only recording orbital conditions that permitted surface liquid water. Total melt production is sufficient to account for observed aqueous alteration. The pattern of seasonal snowmelt is integrated over all spin-orbit parameters and compared to the observed distribution of sedimentary rocks. The global distribution of snowmelt has maxima in Valles Marineris, Meridiani Planum and Gale Crater. These correspond to maxima in the sedimentary-rock distribution. Higher pressures and especially higher temperatures lead to melting over a broader range of spin-orbit parameters. The pattern of sedimentary rocks on Mars is most consistent with a model Mars paleoclimate that only rarely produced enough meltwater to precipitate aqueous cements (sulfates, carbonates, phyllosilicates and silica) and indurate sediment. This is consistent with observations suggesting that surface aqueous alteration on Mars was brief and at low water/rock ratio. The results suggest intermittency of snowmelt and long globally-dry intervals, unfavorable for past life on Mars. This model makes testable predictions for the Mars Science Laboratory Curiosity rover at Gale Crater's mound (Mount Sharp, Aeolis Mons). Gale Crater's mound is predicted to be a hemispheric maximum for snowmelt on Mars. JF - Icarus AU - Kite, Edwin S AU - Halevy, Itay AU - Kahre, Melinda A AU - Wolff, Michael J AU - Manga, Michael Y1 - 2013/03// PY - 2013 DA - March 2013 SP - 181 EP - 210 PB - Elsevier, New York, NY VL - 223 IS - 1 SN - 0019-1035, 0019-1035 KW - silicates KW - obliquity of the ecliptic KW - orbits KW - astrobiology KW - Mars KW - paleoclimatology KW - Gale Crater KW - eccentricity KW - carbon dioxide KW - Aeolis Mons KW - sedimentary rocks KW - melting KW - water-rock interaction KW - silica KW - Curiosity Rover KW - Mars Science Laboratory Mission KW - water KW - sulfates KW - snowmelt KW - mounds KW - atmosphere KW - terrestrial planets KW - aqueous alteration KW - planets KW - Milankovitch theory KW - sheet silicates KW - seasonal variations KW - Mount Sharp KW - carbonates KW - meltwater KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1347455754?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+melting+and+the+formation+of+sedimentary+rocks+on+Mars%2C+with+predictions+for+the+Gale+Crater+mound&rft.au=Kite%2C+Edwin+S%3BHalevy%2C+Itay%3BKahre%2C+Melinda+A%3BWolff%2C+Michael+J%3BManga%2C+Michael&rft.aulast=Kite&rft.aufirst=Edwin&rft.date=2013-03-01&rft.volume=223&rft.issue=1&rft.spage=181&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2012.11.034 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 280 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table, sketch maps N1 - SuppNotes - Includes appendices N1 - Last updated - 2013-07-18 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - Aeolis Mons; aqueous alteration; astrobiology; atmosphere; carbon dioxide; carbonates; Curiosity Rover; eccentricity; Gale Crater; Mars; Mars Science Laboratory Mission; melting; meltwater; Milankovitch theory; mounds; Mount Sharp; obliquity of the ecliptic; orbits; paleoclimatology; planets; seasonal variations; sedimentary rocks; sheet silicates; silica; silicates; snowmelt; sulfates; terrestrial planets; water; water-rock interaction DO - http://dx.doi.org/10.1016/j.icarus.2012.11.034 ER - TY - JOUR T1 - Crater topography on Titan; implications for landscape evolution AN - 1347455625; 2013-036545 AB - We present a comprehensive review of available crater topography measurements for Saturn's moon Titan. In general, the depths of Titan's craters are within the range of depths observed for similarly sized fresh craters on Ganymede, but several hundreds of meters shallower than Ganymede's average depth vs. diameter trend. Depth-to-diameter ratios are between 0.0012 + or - 0.0003 (for the largest crater studied, Menrva, D approximately 425 km) and 0.017 + or - 0.004 (for the smallest crater studied, Ksa, D approximately 39 km). When we evaluate the Anderson-Darling goodness-of-fit parameter, we find that there is less than a 10% probability that Titan's craters have a current depth distribution that is consistent with the depth distribution of fresh craters on Ganymede. There is, however, a much higher probability that the relative depths are uniformly distributed between 0 (fresh) and 1 (completely infilled). This distribution is consistent with an infilling process that is relatively constant with time, such as aeolian deposition. Assuming that Ganymede represents a close 'airless' analogue to Titan, the difference in depths represents the first quantitative measure of the amount of modification that has shaped Titan's surface, the only body in the outer Solar System with extensive surface-atmosphere exchange. JF - Icarus AU - Neish, C D AU - Kirk, R L AU - Lorenz, R D AU - Bray, V J AU - Schenk, P AU - Stiles, B W AU - Turtle, E AU - Mitchell, K AU - Hayes, A Y1 - 2013/03// PY - 2013 DA - March 2013 SP - 82 EP - 90 PB - Elsevier, New York, NY VL - 223 IS - 1 SN - 0019-1035, 0019-1035 KW - icy satellites KW - impact features KW - erosion KW - landform evolution KW - resurfacing KW - Ganymede Satellite KW - wind erosion KW - radar methods KW - atmosphere KW - morphometry KW - Galilean satellites KW - digital terrain models KW - depth KW - size KW - Cassini-Huygens Mission KW - topography KW - craters KW - Titan Satellite KW - interplanetary comparison KW - impact craters KW - satellites KW - winds KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1347455625?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Crater+topography+on+Titan%3B+implications+for+landscape+evolution&rft.au=Neish%2C+C+D%3BKirk%2C+R+L%3BLorenz%2C+R+D%3BBray%2C+V+J%3BSchenk%2C+P%3BStiles%2C+B+W%3BTurtle%2C+E%3BMitchell%2C+K%3BHayes%2C+A&rft.aulast=Neish&rft.aufirst=C&rft.date=2013-03-01&rft.volume=223&rft.issue=1&rft.spage=82&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2012.11.030 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 54 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2013-05-02 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - atmosphere; Cassini-Huygens Mission; craters; depth; digital terrain models; erosion; Galilean satellites; Ganymede Satellite; icy satellites; impact craters; impact features; interplanetary comparison; landform evolution; morphometry; radar methods; resurfacing; satellites; size; Titan Satellite; topography; wind erosion; winds DO - http://dx.doi.org/10.1016/j.icarus.2012.11.030 ER - TY - JOUR T1 - Dewatering microalgae by forward osmosis AN - 1291596262; 17640138 AB - Microalgae are known to be an excellent source of biofuels, but many issues surrounding the scale and economics of their cultivation have yet to be resolved. In particular, dewatering methods, such as centrifugation and tangential flow filtration, are prohibitively energy intensive. In this study, forward osmosis (FO) is considered as a partial dewatering method for microalgae growing on wastewater in a marine environment. Using artificial seawater as the draw solution, average dewatering rates of 2l/m2membrane/h (range 1.8-2.4l/m2h) were observed and volumes decreased by 65-85%. For a single membrane, daily dewatering rates did not significantly change in 14 consecutive experiments. Hourly dewatering rates did not gradually decrease, as might be expected; instead the dewatering rate oscillated throughout each experiment. Exposing an FO membrane in the ocean for 45days caused significant biofouling on its surface, but its dewatering rate did not change. Exposing three FO membranes in the ocean for 52days also caused significant biofouling, but in this experiment all membranes developed leaks that allowed saltwater to pass. These experiments suggest that FO may be an energy-saving step in dewatering freshwater microalgae if an appropriate draw solution is available and if conditions are controlled to prevent leakage. JF - Desalination AU - Buckwalter, Patrick AU - Embaye, Tsegereda AU - Gormly, Sherwin AU - Trent, Jonathan D AD - Universities Space Research Association, 10211 Wincopin Circle, Suite 500 Columbia, MD 21044-3432, USA, jonathan.d.trent@nasa.gov Y1 - 2013/03/01/ PY - 2013 DA - 2013 Mar 01 SP - 19 EP - 22 PB - Elsevier B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 312 SN - 0011-9164, 0011-9164 KW - Microbiology Abstracts C: Algology, Mycology & Protozoology; Sustainability Science Abstracts; Environment Abstracts; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Biofouling KW - Fuel technology KW - biofouling KW - Centrifugation KW - Marine environment KW - Economics KW - Algae KW - Membranes KW - Leakage KW - Freshwater environments KW - Energy conservation KW - Dewatering KW - Osmosis KW - Filtration KW - Energy KW - Oceans KW - Waste water KW - Wastewater KW - Biofuels KW - Artificial seawater KW - Cultivation KW - ENA 03:Energy KW - Q2 09282:Materials technology, corrosion, fouling and boring KW - SW 3040:Wastewater treatment processes KW - M3 1010:Issues in Sustainable Development KW - O 4080:Pollution - Control and Prevention KW - K 03320:Cell Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1291596262?accountid=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=Desalination&rft.atitle=Dewatering+microalgae+by+forward+osmosis&rft.au=Buckwalter%2C+Patrick%3BEmbaye%2C+Tsegereda%3BGormly%2C+Sherwin%3BTrent%2C+Jonathan+D&rft.aulast=Buckwalter&rft.aufirst=Patrick&rft.date=2013-03-01&rft.volume=312&rft.issue=&rft.spage=19&rft.isbn=&rft.btitle=&rft.title=Desalination&rft.issn=00119164&rft_id=info:doi/10.1016%2Fj.desal.2012.12.015 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-02-01 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Centrifugation; Filtration; Dewatering; Artificial seawater; Osmosis; Algae; Leakage; biofouling; Freshwater environments; Marine environment; Oceans; Energy; Economics; Waste water; Biofuels; Fuel technology; Membranes; Energy conservation; Wastewater; Cultivation; Biofouling DO - http://dx.doi.org/10.1016/j.desal.2012.12.015 ER - TY - JOUR T1 - A sub-Mercury-sized exoplanet AN - 1320158664; 2013-030657 JF - Nature (London) AU - Barclay, Thomas AU - Rowe, Jason F AU - Lissauer, Jack J AU - Huber, Daniel AU - Fressin, Francois AU - Howell, Steve B AU - Bryson, Stephen T AU - Chaplin, William J AU - Desert, Jean-Michel AU - Lopez, Eric D AU - Marcy, Geoffrey W AU - Mullally, Fergal AU - Ragozzine, Darin AU - Torres, Guillermo AU - Adams, Elisabeth R AU - Agol, Eric AU - Barrado, David AU - Basu, Sarbani AU - Bedding, Timothy R AU - Buchhave, Lars A AU - Charbonneau, David AU - Christiansen, Jessie L AU - Christensen-Dalsgaard, Jorgen AU - Ciardi, David AU - Cochran, William D AU - Dupree, Andrea K AU - Elsworth, Yvonne AU - Everett, Mark AU - Fischer, Debra A AU - Ford, Eric B AU - Fortney, Jonathan J AU - Geary, John C AU - Haas, Michael R AU - Handberg, Rasmus AU - Hekker, Saskia AU - Henze, Christopher E AU - Horch, Elliott AU - Howard, Andrew W AU - Hunter, Roger C AU - Isaacson, Howard AU - Jenkins, Jon M AU - Karoff, Christoffer AU - Kawaler, Steven D AU - Kjeldsen, Hans AU - Klaus, Todd C AU - Latham, David W AU - Li, Jie AU - Lillo-Box, Jorge AU - Lund, Mikkel N AU - Lundkvist, Mia AU - Metcalfe, Travis S AU - Miglio, Andrea AU - Morris, Robert L AU - Quintana, Elisa V AU - Stello, Dennis AU - Smith, Jeffrey C AU - Still, Martin AU - Thompson, Susan E Y1 - 2013/02/28/ PY - 2013 DA - 2013 Feb 28 SP - 452 EP - 454 PB - Macmillan Journals, London VL - 494 IS - 7438 SN - 0028-0836, 0028-0836 KW - models KW - planets KW - detection KW - extrasolar planets KW - orbits KW - interplanetary comparison KW - Kepler-37b KW - simulation KW - Kepler Mission KW - size KW - observations KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1320158664?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=A+sub-Mercury-sized+exoplanet&rft.au=Barclay%2C+Thomas%3BRowe%2C+Jason+F%3BLissauer%2C+Jack+J%3BHuber%2C+Daniel%3BFressin%2C+Francois%3BHowell%2C+Steve+B%3BBryson%2C+Stephen+T%3BChaplin%2C+William+J%3BDesert%2C+Jean-Michel%3BLopez%2C+Eric+D%3BMarcy%2C+Geoffrey+W%3BMullally%2C+Fergal%3BRagozzine%2C+Darin%3BTorres%2C+Guillermo%3BAdams%2C+Elisabeth+R%3BAgol%2C+Eric%3BBarrado%2C+David%3BBasu%2C+Sarbani%3BBedding%2C+Timothy+R%3BBuchhave%2C+Lars+A%3BCharbonneau%2C+David%3BChristiansen%2C+Jessie+L%3BChristensen-Dalsgaard%2C+Jorgen%3BCiardi%2C+David%3BCochran%2C+William+D%3BDupree%2C+Andrea+K%3BElsworth%2C+Yvonne%3BEverett%2C+Mark%3BFischer%2C+Debra+A%3BFord%2C+Eric+B%3BFortney%2C+Jonathan+J%3BGeary%2C+John+C%3BHaas%2C+Michael+R%3BHandberg%2C+Rasmus%3BHekker%2C+Saskia%3BHenze%2C+Christopher+E%3BHorch%2C+Elliott%3BHoward%2C+Andrew+W%3BHunter%2C+Roger+C%3BIsaacson%2C+Howard%3BJenkins%2C+Jon+M%3BKaroff%2C+Christoffer%3BKawaler%2C+Steven+D%3BKjeldsen%2C+Hans%3BKlaus%2C+Todd+C%3BLatham%2C+David+W%3BLi%2C+Jie%3BLillo-Box%2C+Jorge%3BLund%2C+Mikkel+N%3BLundkvist%2C+Mia%3BMetcalfe%2C+Travis+S%3BMiglio%2C+Andrea%3BMorris%2C+Robert+L%3BQuintana%2C+Elisa+V%3BStello%2C+Dennis%3BSmith%2C+Jeffrey+C%3BStill%2C+Martin%3BThompson%2C+Susan+E&rft.aulast=Barclay&rft.aufirst=Thomas&rft.date=2013-02-28&rft.volume=494&rft.issue=7438&rft.spage=452&rft.isbn=&rft.btitle=&rft.title=Nature+%28London%29&rft.issn=00280836&rft_id=info:doi/10.1038%2Fnature11914 L2 - http://www.nature.com/nature/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 30 N1 - Document feature - illus. N1 - Last updated - 2013-07-18 N1 - CODEN - NATUAS N1 - SubjectsTermNotLitGenreText - detection; extrasolar planets; interplanetary comparison; Kepler Mission; Kepler-37b; models; observations; orbits; planets; simulation; size DO - http://dx.doi.org/10.1038/nature11914 ER - TY - NEWS T1 - NASA Seeks It All: High Lift, Low Drag AN - 1313231989 JF - UPI Space Daily AU - Jim Banke for NASA Aeronautics Research Mission Directorate Y1 - 2013/02/28/ PY - 2013 DA - 2013 Feb 28 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1313231989?accountid=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+Seeks+It+All%3A+High+Lift%2C+Low+Drag&rft.au=Jim+Banke+for+NASA+Aeronautics+Research+Mission+Directorate&rft.aulast=Jim+Banke+for+NASA+Aeronautics+Research+Mission+Directorate&rft.aufirst=&rft.date=2013-02-28&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 - 2013-02-28 ER - TY - NEWS T1 - Low-Gravity Flights Will Aid ISS Fluids and Combustion Experiments AN - 1312330047 JF - UPI Space Daily AU - Linda Nero fpr Glenn Research Center Y1 - 2013/02/25/ PY - 2013 DA - 2013 Feb 25 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1312330047?accountid=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=Low-Gravity+Flights+Will+Aid+ISS+Fluids+and+Combustion+Experiments&rft.au=Linda+Nero+fpr+Glenn+Research+Center&rft.aulast=Linda+Nero+fpr+Glenn+Research+Center&rft.aufirst=&rft.date=2013-02-25&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 - 2013-02-25 ER - TY - NEWS T1 - A Possible Naked-eye Comet in March AN - 1288317826 JF - UPI Space Daily AU - Tony Phillips for NASA Science News Y1 - 2013/02/18/ PY - 2013 DA - 2013 Feb 18 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1288317826?accountid=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=A+Possible+Naked-eye+Comet+in+March&rft.au=Tony+Phillips+for+NASA+Science+News&rft.aulast=Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2013-02-18&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 - 2013-02-18 ER - TY - JOUR T1 - The volcanic history of Syria Planum, Mars AN - 1347459306; 2013-038410 AB - A field of small (10 s of km in diameter) volcanoes in the Syria Planum region of Mars is mapped to determine abundance, distribution, and alignments of vents. These data are used to assess possible variations in eruption style across space and time. Each eruption site is assigned a point location. Nearest neighbor and two-point azimuth analyses are conducted to assess the spacing and orientations between vents across the study area. Two vent fields are identified as unique volcanic units along with the previously identified Syria Mons volcano. Superposition relationships and crater retention rates indicate that these three volcanic episodes span approximately 900 Ma, beginning in the early Hesperian and ending in the Early Amazonian. No clear hiatus in eruptive activity is identified between these events, although a progression from eruptions at Syria Mons, to regionally distributed eruptions that form the bulk of the Syria Planum plains, to a final migration of dispersed eruptions to Syria's northwest is identified. Nearest neighbor analyses suggest a non-random distribution among the entire population of Syria Planum, which is interpreted as resulting from the interaction of independent magma bodies ascending through the crust during different stress regimes throughout the region's eruptive history. Two-point azimuth results identify three orientations of enhanced alignments, which match well with radial extensions of three major tectonic centers to the south, east, and northwest of the study area. As such, Syria Planum volcanism evolved from a central vent volcano to dispersed shield field development over several hundred million years, during which the independent magma bodies related to each small volcano interacted to some extent with one or more of at least three buried tectonic patterns in the older crust. These results show a strong relationship between independent mapping efforts of tectonic and volcanic features. Continued integration of volcano-tectonic mapping should provide direct constraints for future geodynamic models of magma production and thermal evolution of the Tharsis province. Abstract Copyright (2013) Elsevier, B.V. JF - Journal of Volcanology and Geothermal Research AU - Richardson, Jacob A AU - Bleacher, Jacob E AU - Glaze, Lori S Y1 - 2013/02/15/ PY - 2013 DA - 2013 Feb 15 SP - 1 EP - 13 PB - Elsevier, Amsterdam VL - 252 SN - 0377-0273, 0377-0273 KW - lineaments KW - lava flows KW - spatial data KW - statistical analysis KW - nearest neighbor analysis KW - Mars KW - mapping KW - Hesperian KW - terrestrial planets KW - Syria Mons KW - spatial distribution KW - planets KW - Syria Planum KW - craters KW - Amazonian KW - volcanism KW - eruptions KW - age KW - volcanoes KW - tectonics KW - shield volcanoes KW - vents KW - Tharsis KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1347459306?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=The+volcanic+history+of+Syria+Planum%2C+Mars&rft.au=Richardson%2C+Jacob+A%3BBleacher%2C+Jacob+E%3BGlaze%2C+Lori+S&rft.aulast=Richardson&rft.aufirst=Jacob&rft.date=2013-02-15&rft.volume=252&rft.issue=&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Journal+of+Volcanology+and+Geothermal+Research&rft.issn=03770273&rft_id=info:doi/10.1016%2Fj.jvolgeores.2012.11.007 L2 - http://www.sciencedirect.com/science/journal/03770273 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2013-01-01 N1 - Number of references - 66 N1 - Document feature - illus. incl. 3 tables, geol. sketch maps N1 - Last updated - 2013-05-02 N1 - CODEN - JVGRDQ N1 - SubjectsTermNotLitGenreText - age; Amazonian; craters; eruptions; Hesperian; lava flows; lineaments; mapping; Mars; nearest neighbor analysis; planets; shield volcanoes; spatial data; spatial distribution; statistical analysis; Syria Mons; Syria Planum; tectonics; terrestrial planets; Tharsis; vents; volcanism; volcanoes DO - http://dx.doi.org/10.1016/j.jvolgeores.2012.11.007 ER - TY - CPAPER T1 - Space Medicine T2 - 2013 Annual Meeting of the American Association for the Advancement of Science (AAAS 2013) AN - 1369228474; 6213709 JF - 2013 Annual Meeting of the American Association for the Advancement of Science (AAAS 2013) AU - Barratt, Michael Y1 - 2013/02/14/ PY - 2013 DA - 2013 Feb 14 KW - Economics KW - Social aspects KW - Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369228474?accountid=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=2013+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2013%29&rft.atitle=Space+Medicine&rft.au=Barratt%2C+Michael&rft.aulast=Barratt&rft.aufirst=Michael&rft.date=2013-02-14&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2013+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2013%29&rft.issn=&rft_id=info:doi/ L2 - http://aaas.confex.com/aaas/2013/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - The Icy But Warm Moons of Jupiter T2 - 2013 Annual Meeting of the American Association for the Advancement of Science (AAAS 2013) AN - 1369227497; 6213204 JF - 2013 Annual Meeting of the American Association for the Advancement of Science (AAAS 2013) AU - Pappalardo, Robert Y1 - 2013/02/14/ PY - 2013 DA - 2013 Feb 14 KW - Moon UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369227497?accountid=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=2013+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2013%29&rft.atitle=The+Icy+But+Warm+Moons+of+Jupiter&rft.au=Pappalardo%2C+Robert&rft.aulast=Pappalardo&rft.aufirst=Robert&rft.date=2013-02-14&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2013+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2013%29&rft.issn=&rft_id=info:doi/ L2 - http://aaas.confex.com/aaas/2013/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - JOUR T1 - Geopotential field anomaly continuation with multi-altitude observations AN - 1347455423; 2013-036310 AB - Conventional gravity and magnetic anomaly continuation invokes the standard Poisson boundary condition of a zero anomaly at an infinite vertical distance from the observation surface. This simple continuation is limited, however, where multiple altitude slices of the anomaly field have been observed. Increasingly, areas are becoming available which are constrained by multiple boundary conditions from surface, airborne, and satellite surveys. This paper describes the implementation of continuation with multi-altitude boundary conditions in Cartesian and spherical coordinates and investigates the advantages and limitations of these applications. Continuations by EPS (equivalent point source) inversion and the FT (Fourier transform), as well as by SCHA (spherical cap harmonic analysis) are considered. These methods were selected because they are especially well suited for analyzing multi-altitude data over finite patches of the earth such as those covered by the ADMAP database. In general, continuations constrained by multi-altitude data surfaces are invariably superior to those constrained by a single altitude data surface due to anomaly measurement errors and the non-uniqueness of continuation. Abstract Copyright (2013) Elsevier, B.V. JF - Tectonophysics AU - Kim, Jeong Woo AU - Kim, Hyung Rae AU - von Frese, Ralph R B AU - Taylor, Patrick AU - Rangelova, Elena Y1 - 2013/02/11/ PY - 2013 DA - 2013 Feb 11 SP - 34 EP - 47 PB - Elsevier, Amsterdam VL - 585 SN - 0040-1951, 0040-1951 KW - Poisson's ratio KW - geophysical surveys KW - data processing KW - Coats Land KW - Europe KW - elastic constants KW - gravity methods KW - gravity anomalies KW - errors KW - Fourier analysis KW - potential field KW - geophysical methods KW - magnetic methods KW - magnetic anomalies KW - inverse problem KW - satellite methods KW - boundary conditions KW - spherical harmonic analysis KW - Balkan Peninsula KW - Antarctica KW - mathematical methods KW - surveys KW - Shackleton Range KW - remote sensing KW - airborne methods KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1347455423?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Tectonophysics&rft.atitle=Geopotential+field+anomaly+continuation+with+multi-altitude+observations&rft.au=Kim%2C+Jeong+Woo%3BKim%2C+Hyung+Rae%3Bvon+Frese%2C+Ralph+R+B%3BTaylor%2C+Patrick%3BRangelova%2C+Elena&rft.aulast=Kim&rft.aufirst=Jeong&rft.date=2013-02-11&rft.volume=585&rft.issue=&rft.spage=34&rft.isbn=&rft.btitle=&rft.title=Tectonophysics&rft.issn=00401951&rft_id=info:doi/10.1016%2Fj.tecto.2012.07.016 L2 - http://www.sciencedirect.com/science/journal/00401951 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2013-01-01 N1 - Number of references - 50 N1 - Document feature - illus. incl. 3 tables, sketch maps N1 - Last updated - 2013-07-18 N1 - CODEN - TCTOAM N1 - SubjectsTermNotLitGenreText - airborne methods; Antarctica; Balkan Peninsula; boundary conditions; Coats Land; data processing; elastic constants; errors; Europe; Fourier analysis; geophysical methods; geophysical surveys; gravity anomalies; gravity methods; inverse problem; magnetic anomalies; magnetic methods; mathematical methods; Poisson's ratio; potential field; remote sensing; satellite methods; Shackleton Range; spherical harmonic analysis; surveys DO - http://dx.doi.org/10.1016/j.tecto.2012.07.016 ER - TY - JOUR T1 - Gravity field of the Moon from the Gravity Recovery and Interior Laboratory (GRAIL) Mission AN - 1320158367; 2013-030547 AB - Spacecraft-to-spacecraft tracking observations from the Gravity Recovery and Interior Laboratory (GRAIL) have been used to construct a gravitational field of the Moon to spherical harmonic degree and order 420. The GRAIL field reveals features not previously resolved, including tectonic structures, volcanic landforms, basin rings, crater central peaks, and numerous simple craters. From degrees 80 through 300, over 98% of the gravitational signature is associated with topography, a result that reflects the preservation of crater relief in highly fractured crust. The remaining 2% represents fine details of subsurface structure not previously resolved. GRAIL elucidates the role of impact bombardment in homogenizing the distribution of shallow density anomalies on terrestrial planetary bodies. JF - Science AU - Zuber, Maria T AU - Smith, David E AU - Watkins, Michael M AU - Asmar, Sami W AU - Konopliv, Alexander S AU - Lemoine, Frank G AU - Melosh, H Jay AU - Neumann, Gregory A AU - Phillips, Roger J AU - Solomon, Sean C AU - Wieczorek, Mark A AU - Williams, James G AU - Goossens, Sander J AU - Kruizinga, Gerhard AU - Mazarico, Erwan AU - Park, Ryan S AU - Yuan, Dah-Ning Y1 - 2013/02/08/ PY - 2013 DA - 2013 Feb 08 SP - 668 EP - 671 PB - American Association for the Advancement of Science, Washington, DC VL - 339 IS - 6120 SN - 0036-8075, 0036-8075 KW - free-air anomalies KW - Moon KW - GRAIL Mission KW - mapping KW - lunar craters KW - relief KW - spherical harmonic analysis KW - gravity anomalies KW - KREEP KW - gravity field KW - lunar crust KW - surface features KW - Bouguer anomalies KW - Gravity Recovery and Interior Laboratory KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1320158367?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Gravity+field+of+the+Moon+from+the+Gravity+Recovery+and+Interior+Laboratory+%28GRAIL%29+Mission&rft.au=Zuber%2C+Maria+T%3BSmith%2C+David+E%3BWatkins%2C+Michael+M%3BAsmar%2C+Sami+W%3BKonopliv%2C+Alexander+S%3BLemoine%2C+Frank+G%3BMelosh%2C+H+Jay%3BNeumann%2C+Gregory+A%3BPhillips%2C+Roger+J%3BSolomon%2C+Sean+C%3BWieczorek%2C+Mark+A%3BWilliams%2C+James+G%3BGoossens%2C+Sander+J%3BKruizinga%2C+Gerhard%3BMazarico%2C+Erwan%3BPark%2C+Ryan+S%3BYuan%2C+Dah-Ning&rft.aulast=Zuber&rft.aufirst=Maria&rft.date=2013-02-08&rft.volume=339&rft.issue=6120&rft.spage=668&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.1231507 L2 - http://www.sciencemag.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 27 N1 - PubXState - DC N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2013-03-28 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - Bouguer anomalies; free-air anomalies; GRAIL Mission; gravity anomalies; gravity field; Gravity Recovery and Interior Laboratory; KREEP; lunar craters; lunar crust; mapping; Moon; relief; spherical harmonic analysis; surface features DO - http://dx.doi.org/10.1126/science.1231507 ER - TY - JOUR T1 - Ancient igneous intrusions and early expansion of the Moon revealed by GRAIL gravity gradiometry AN - 1320156548; 2013-030549 AB - The earliest history of the Moon is poorly preserved in the surface geologic record due to the high flux of impactors, but aspects of that history may be preserved in subsurface structures. Application of gravity gradiometry to observations by the Gravity Recovery and Interior Laboratory (GRAIL) mission results in the identification of a population of linear gravity anomalies with lengths of hundreds of kilometers. Inversion of the gravity anomalies indicates elongated positive-density anomalies that are interpreted to be ancient vertical tabular intrusions or dikes formed by magmatism in combination with extension of the lithosphere. Crosscutting relationships support a pre-Nectarian to Nectarian age, preceding the end of the heavy bombardment of the Moon. The distribution, orientation, and dimensions of the intrusions indicate a globally isotropic extensional stress state arising from an increase in the Moon's radius by 0.6 to 4.9 kilometers early in lunar history, consistent with predictions of thermal models. JF - Science AU - Andrews-Hanna, Jeffrey C AU - Asmar, Sami W AU - Head, James W, III AU - Kiefer, Walter S AU - Konopliv, Alexander S AU - Lemoine, Frank G AU - Matsuyama, Isamu AU - Mazarico, Erwan AU - McGovern, Patrick J AU - Melosh, H Jay AU - Neumann, Gregory A AU - Nimmo, Francis AU - Phillips, Roger J AU - Smith, David E AU - Solomon, Sean C AU - Taylor, G Jeffrey AU - Wieczorek, Mark A AU - Williams, James G AU - Zuber, Maria T Y1 - 2013/02/08/ PY - 2013 DA - 2013 Feb 08 SP - 675 EP - 678 PB - American Association for the Advancement of Science, Washington, DC VL - 339 IS - 6120 SN - 0036-8075, 0036-8075 KW - Moon KW - igneous rocks KW - Monte Carlo analysis KW - GRAIL Mission KW - thermal properties KW - statistical analysis KW - geophysical methods KW - variations KW - models KW - gravity methods KW - gravity anomalies KW - intrusions KW - dikes KW - Bouguer anomalies KW - Nectarian KW - Gravity Recovery and Interior Laboratory KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1320156548?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Ancient+igneous+intrusions+and+early+expansion+of+the+Moon+revealed+by+GRAIL+gravity+gradiometry&rft.au=Andrews-Hanna%2C+Jeffrey+C%3BAsmar%2C+Sami+W%3BHead%2C+James+W%2C+III%3BKiefer%2C+Walter+S%3BKonopliv%2C+Alexander+S%3BLemoine%2C+Frank+G%3BMatsuyama%2C+Isamu%3BMazarico%2C+Erwan%3BMcGovern%2C+Patrick+J%3BMelosh%2C+H+Jay%3BNeumann%2C+Gregory+A%3BNimmo%2C+Francis%3BPhillips%2C+Roger+J%3BSmith%2C+David+E%3BSolomon%2C+Sean+C%3BTaylor%2C+G+Jeffrey%3BWieczorek%2C+Mark+A%3BWilliams%2C+James+G%3BZuber%2C+Maria+T&rft.aulast=Andrews-Hanna&rft.aufirst=Jeffrey&rft.date=2013-02-08&rft.volume=339&rft.issue=6120&rft.spage=675&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.1231753 L2 - http://www.sciencemag.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 30 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table, geol. sketch maps N1 - Last updated - 2013-03-28 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - Bouguer anomalies; dikes; geophysical methods; GRAIL Mission; gravity anomalies; gravity methods; Gravity Recovery and Interior Laboratory; igneous rocks; intrusions; models; Monte Carlo analysis; Moon; Nectarian; statistical analysis; thermal properties; variations DO - http://dx.doi.org/10.1126/science.1231753 ER - TY - JOUR T1 - The crust of the Moon as seen by GRAIL AN - 1320156543; 2013-030548 AB - High-resolution gravity data obtained from the dual Gravity Recovery and Interior Laboratory (GRAIL) spacecraft show that the bulk density of the Moon's highlands crust is 2550 kilograms per cubic meter, substantially lower than generally assumed. When combined with remote sensing and sample data, this density implies an average crustal porosity of 12% to depths of at least a few kilometers. Lateral variations in crustal porosity correlate with the largest impact basins, whereas lateral variations in crustal density correlate with crustal composition. The low-bulk crustal density allows construction of a global crustal thickness model that satisfies the Apollo seismic constraints, and with an average crustal thickness between 34 and 43 kilometers, the bulk refractory element composition of the Moon is not required to be enriched with respect to that of Earth. JF - Science AU - Wieczorek, Mark A AU - Neumann, Gregory A AU - Nimmo, Francis AU - Kiefer, Walter S AU - Taylor, G Jeffrey AU - Melosh, H Jay AU - Phillips, Roger J AU - Solomon, Sean C AU - Andrews-Hanna, Jeffrey C AU - Asmar, Sami W AU - Konopliv, Alexander S AU - Lemoine, Frank G AU - Smith, David E AU - Watkins, Michael M AU - Williams, James G AU - Zuber, Maria T Y1 - 2013/02/08/ PY - 2013 DA - 2013 Feb 08 SP - 671 EP - 675 PB - American Association for the Advancement of Science, Washington, DC VL - 339 IS - 6120 SN - 0036-8075, 0036-8075 KW - density KW - Moon KW - GRAIL Mission KW - Apollo Program KW - highlands KW - porosity KW - lunar craters KW - relief KW - models KW - gravity field KW - topography KW - lunar crust KW - surface features KW - thickness KW - terrestrial comparison KW - Gravity Recovery and Interior Laboratory KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1320156543?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+crust+of+the+Moon+as+seen+by+GRAIL&rft.au=Wieczorek%2C+Mark+A%3BNeumann%2C+Gregory+A%3BNimmo%2C+Francis%3BKiefer%2C+Walter+S%3BTaylor%2C+G+Jeffrey%3BMelosh%2C+H+Jay%3BPhillips%2C+Roger+J%3BSolomon%2C+Sean+C%3BAndrews-Hanna%2C+Jeffrey+C%3BAsmar%2C+Sami+W%3BKonopliv%2C+Alexander+S%3BLemoine%2C+Frank+G%3BSmith%2C+David+E%3BWatkins%2C+Michael+M%3BWilliams%2C+James+G%3BZuber%2C+Maria+T&rft.aulast=Wieczorek&rft.aufirst=Mark&rft.date=2013-02-08&rft.volume=339&rft.issue=6120&rft.spage=671&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.1231530 L2 - http://www.sciencemag.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 35 N1 - PubXState - DC N1 - Document feature - illus. incl. geol. sketch maps N1 - Last updated - 2013-03-28 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - Apollo Program; density; GRAIL Mission; gravity field; Gravity Recovery and Interior Laboratory; highlands; lunar craters; lunar crust; models; Moon; porosity; relief; surface features; terrestrial comparison; thickness; topography DO - http://dx.doi.org/10.1126/science.1231530 ER - TY - NEWS T1 - Record Setting Asteroid Flyby AN - 1284570035 JF - UPI Space Daily AU - Dr. Tony Phillips for NASA Science News Y1 - 2013/02/07/ PY - 2013 DA - 2013 Feb 07 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1284570035?accountid=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=Record+Setting+Asteroid+Flyby&rft.au=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2013-02-07&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 - 2013-02-07 ER - TY - JOUR T1 - Regional-scale dynamics in humid, late Holocene broadleaf forests AN - 1832622084; 773857-36 JF - PAGES (Past Global Changes) Open Science Meeting (OSM) - Abstract Book AU - Pederson, Neil AU - Dyer, James AU - McEwan, Ryan AU - Hessl, Amy AU - Mock, Cary AU - Orwig, David AU - Reider, Harald AU - Cook, Ben AU - Fischer, Hubertus AU - Mix, Alan Y1 - 2013/02// PY - 2013 DA - February 2013 SP - 197 EP - 198 PB - PAGES International Project Office of the International Geosphere-Biosphere Programme (IGBP), [varies] VL - 4 KW - United States KW - forests KW - Cenozoic KW - biodiversity KW - Quaternary KW - Eastern U.S. KW - upper Holocene KW - paleoclimatology KW - Holocene KW - paleoecology KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832622084?accountid=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=PAGES+%28Past+Global+Changes%29+Open+Science+Meeting+%28OSM%29+-+Abstract+Book&rft.atitle=Regional-scale+dynamics+in+humid%2C+late+Holocene+broadleaf+forests&rft.au=Pederson%2C+Neil%3BDyer%2C+James%3BMcEwan%2C+Ryan%3BHessl%2C+Amy%3BMock%2C+Cary%3BOrwig%2C+David%3BReider%2C+Harald%3BCook%2C+Ben%3BFischer%2C+Hubertus%3BMix%2C+Alan&rft.aulast=Pederson&rft.aufirst=Neil&rft.date=2013-02-01&rft.volume=4&rft.issue=&rft.spage=197&rft.isbn=&rft.btitle=&rft.title=PAGES+%28Past+Global+Changes%29+Open+Science+Meeting+%28OSM%29+-+Abstract+Book&rft.issn=&rft_id=info:doi/ L2 - http://www.pastglobalchanges.org/2-uncategorised/820-osm-ysm-archive LA - English DB - GeoRef N1 - Conference title - 4th open science meeting on The past; a compass for future Earth N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Last updated - 2017-01-24 N1 - CODEN - #07335 N1 - SubjectsTermNotLitGenreText - biodiversity; Cenozoic; Eastern U.S.; forests; Holocene; paleoclimatology; paleoecology; Quaternary; United States; upper Holocene ER - TY - JOUR T1 - Megadroughts in millennium-length forced and control simulations and their comparison to the proxy-derived North American Drought Atlas AN - 1832606069; 773856-54 JF - PAGES (Past Global Changes) Open Science Meeting (OSM) - Abstract Book AU - Coats, Sloan AU - Smerdon, Jason AU - Seager, Richard AU - Cook, Benjamin AU - Gonzalez-Rouco, J Fidel AU - Fischer, Hubertus AU - Mix, Alan Y1 - 2013/02// PY - 2013 DA - February 2013 SP - 79 PB - PAGES International Project Office of the International Geosphere-Biosphere Programme (IGBP), [varies] VL - 4 KW - Cenozoic KW - North America Drought Atlas KW - general circulation models KW - Quaternary KW - moisture KW - simulation KW - paleoclimatology KW - Holocene KW - drought KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832606069?accountid=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=PAGES+%28Past+Global+Changes%29+Open+Science+Meeting+%28OSM%29+-+Abstract+Book&rft.atitle=Megadroughts+in+millennium-length+forced+and+control+simulations+and+their+comparison+to+the+proxy-derived+North+American+Drought+Atlas&rft.au=Coats%2C+Sloan%3BSmerdon%2C+Jason%3BSeager%2C+Richard%3BCook%2C+Benjamin%3BGonzalez-Rouco%2C+J+Fidel%3BFischer%2C+Hubertus%3BMix%2C+Alan&rft.aulast=Coats&rft.aufirst=Sloan&rft.date=2013-02-01&rft.volume=4&rft.issue=&rft.spage=79&rft.isbn=&rft.btitle=&rft.title=PAGES+%28Past+Global+Changes%29+Open+Science+Meeting+%28OSM%29+-+Abstract+Book&rft.issn=&rft_id=info:doi/ L2 - http://www.pastglobalchanges.org/2-uncategorised/820-osm-ysm-archive LA - English DB - GeoRef N1 - Conference title - 4th Open science meeting on The past; a compass for future Earth N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Last updated - 2017-01-24 N1 - CODEN - #07335 N1 - SubjectsTermNotLitGenreText - Cenozoic; drought; general circulation models; Holocene; moisture; North America Drought Atlas; paleoclimatology; Quaternary; simulation ER - TY - JOUR T1 - Leveraging Remote Sensing for Conservation Decision Making AN - 1712566418; PQ0001957111 AB - Remote sensing makes a vital contribution to the biodiversity research and conservation applications communities. However, to realize the full benefit of remote sensing to conservation practice, strong partnerships among remote sensing scientists and conservation practitioners are needed to improve the applicability of remote sensing tools and products for conservation activities. JF - EOS, Transactions, American Geophysical Union AU - Leidner, Allison K AU - Brink, Andreas B AU - Szantoi, Zoltan AD - Universities Space Research Association, Earth Science Division, NASA, Washington, D. C. PY - 2013 SP - 508 PB - Wiley Subscription Services, Inc., 1105 N Market St Wilmington DE 19801 VL - 94 IS - 52 SN - 0096-3941, 0096-3941 KW - Sustainability Science Abstracts; Meteorological & Geoastrophysical Abstracts KW - Decision making KW - Remote sensing KW - Biological diversity KW - Conservation KW - American Geophysical Union KW - M3 1010:Issues in Sustainable Development KW - M2 551.5:General (551.5) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1712566418?accountid=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=EOS%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Leveraging+Remote+Sensing+for+Conservation+Decision+Making&rft.au=Leidner%2C+Allison+K%3BBrink%2C+Andreas+B%3BSzantoi%2C+Zoltan&rft.aulast=Leidner&rft.aufirst=Allison&rft.date=2013-02-01&rft.volume=94&rft.issue=52&rft.spage=508&rft.isbn=&rft.btitle=&rft.title=EOS%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/10.1002%2F2013EO520006 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-09-01 N1 - Last updated - 2015-12-23 N1 - SubjectsTermNotLitGenreText - Remote sensing; Conservation; American Geophysical Union; Decision making; Biological diversity DO - http://dx.doi.org/10.1002/2013EO520006 ER - TY - JOUR T1 - Microbial life under extreme energy limitation AN - 1694975231; 17679857 AB - A great number of the bacteria and archaea on Earth are found in subsurface environments in a physiological state that is poorly represented or explained by laboratory cultures. Microbial cells in these very stable and oligotrophic settings catabolize 10 super(4)- to 10 super(6)-fold more slowly than model organisms in nutrient-rich cultures, turn over biomass on timescales of centuries to millennia rather than hours to days, and subsist with energy fluxes that are 1,000-fold lower than the typical culture-based estimates of maintenance requirements. To reconcile this disparate state of being with our knowledge of microbial physiology will require a revised understanding of microbial energy requirements, including identifying the factors that comprise true basal maintenance and the adaptations that might serve to minimize these factors. JF - Nature Reviews: Microbiology AU - Hoehler, Tori M AU - Joergensen, Bo Barker AD - 1] NASA Ames Research Center, Mail Stop 2394, Moffett Field, California 94035-1000, USA. [2] Y1 - 2013/02// PY - 2013 DA - Feb 2013 SP - 83 EP - 94 PB - Nature Publishing Group, The Macmillan Building London N1 9XW United Kingdom VL - 11 IS - 2 SN - 1740-1526, 1740-1526 KW - Microbiology Abstracts A: Industrial & Applied Microbiology KW - Adaptations KW - Archaea KW - Energy requirements KW - Cell culture KW - Biomass KW - A 01300:Methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1694975231?accountid=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=Nature+Reviews%3A+Microbiology&rft.atitle=Microbial+life+under+extreme+energy+limitation&rft.au=Hoehler%2C+Tori+M%3BJoergensen%2C+Bo+Barker&rft.aulast=Hoehler&rft.aufirst=Tori&rft.date=2013-02-01&rft.volume=11&rft.issue=2&rft.spage=83&rft.isbn=&rft.btitle=&rft.title=Nature+Reviews%3A+Microbiology&rft.issn=17401526&rft_id=info:doi/10.1038%2Fnrmicro2939 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-07-01 N1 - Last updated - 2015-07-23 N1 - SubjectsTermNotLitGenreText - Adaptations; Energy requirements; Cell culture; Biomass; Archaea DO - http://dx.doi.org/10.1038/nrmicro2939 ER - TY - JOUR T1 - HOW TWO SIDES OF THE ATLANTIC CONTRIBUTED TO UNDERSTANDING OF THE GLOBAL OCEANS: CHARLES YENTSCH AND ANDRE MOREL AN - 1680446535; PQ0001515865 AB - In a few short days in September of last year, the ocean color/ocean optics community lost two of the founding members of its Hall of Fame-Charles Yentsch and Andre Morel. Yentsch passed away at the age of 85 on September 19, and Morel passed away on September 23 at the age of 79. JF - Limnology and Oceanography Bulletin AU - Acker, James G AD - NASA/Adnet Systems, Inc., Goddard Earth Sciences Data and Information Services Center (GES DISC), Greenbelt MD, 20771, james.g.acker@nasa.gov Y1 - 2013/02// PY - 2013 DA - February 2013 SP - 2 EP - 6 PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD United Kingdom VL - 22 IS - 1 SN - 1539-607X, 1539-607X KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Oceanic Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Optics KW - Oceans KW - Limnology KW - Oceanography KW - A, Atlantic KW - Color KW - AQ 00001:Water Resources and Supplies KW - Q2 09223:Optical properties KW - SW 0810:General KW - O 2070:Meteorology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680446535?accountid=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=Limnology+and+Oceanography+Bulletin&rft.atitle=HOW+TWO+SIDES+OF+THE+ATLANTIC+CONTRIBUTED+TO+UNDERSTANDING+OF+THE+GLOBAL+OCEANS%3A+CHARLES+YENTSCH+AND+ANDRE+MOREL&rft.au=Acker%2C+James+G&rft.aulast=Acker&rft.aufirst=James&rft.date=2013-02-01&rft.volume=22&rft.issue=1&rft.spage=2&rft.isbn=&rft.btitle=&rft.title=Limnology+and+Oceanography+Bulletin&rft.issn=1539607X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-01 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Optics; Oceans; Limnology; Oceanography; Color; A, Atlantic ER - TY - JOUR T1 - Permeation of aldopentoses and nucleosides through fatty acid and phospholipid membranes; implications to the origins of life AN - 1629940804; 2014-093534 JF - Astrobiology AU - Wei, Chenyu AU - Pohorille, Andrew Y1 - 2013/02// PY - 2013 DA - February 2013 SP - 177 EP - 188 PB - Mary Ann Liebert, Larchmont, NY VL - 13 IS - 2 SN - 1531-1074, 1531-1074 KW - experimental studies KW - fatty acids KW - lipids KW - metabolism KW - biochemistry KW - free energy KW - bonding KW - aqueous solutions KW - simulation KW - life origin KW - hydrogen bonds KW - organic compounds KW - organic acids KW - nucleic acids KW - aldopentose KW - phospholipids KW - nucleosides KW - carboxylic acids KW - ribose KW - pentose KW - molecular dynamics KW - polymers KW - permeability KW - 08:General paleontology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1629940804?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Astrobiology&rft.atitle=Permeation+of+aldopentoses+and+nucleosides+through+fatty+acid+and+phospholipid+membranes%3B+implications+to+the+origins+of+life&rft.au=Wei%2C+Chenyu%3BPohorille%2C+Andrew&rft.aulast=Wei&rft.aufirst=Chenyu&rft.date=2013-02-01&rft.volume=13&rft.issue=2&rft.spage=177&rft.isbn=&rft.btitle=&rft.title=Astrobiology&rft.issn=15311074&rft_id=info:doi/10.1089%2Fast.2012.0901 L2 - http://www.liebertpub.com/publication.aspx?pub_id=99 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 62 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2014-12-04 N1 - SubjectsTermNotLitGenreText - aldopentose; aqueous solutions; biochemistry; bonding; carboxylic acids; experimental studies; fatty acids; free energy; hydrogen bonds; life origin; lipids; metabolism; molecular dynamics; nucleic acids; nucleosides; organic acids; organic compounds; pentose; permeability; phospholipids; polymers; ribose; simulation DO - http://dx.doi.org/10.1089/ast.2012.0901 ER - TY - JOUR T1 - Asteroid belts in debris disk twins; Vega and Fomalhaut AN - 1566816166; 2014-077707 AB - Vega and Fomalhaut are similar in terms of mass, ages, and global debris disk properties; therefore, they are often referred to as "debris disk twins." We present Spitzer 10-35 mu m spectroscopic data centered at both stars and identify warm, unresolved excess emission in the close vicinity of Vega for the first time. The properties of the warm excess in Vega are further characterized with ancillary photometry in the mid-infrared and resolved images in the far-infrared and submillimeter wavelengths. The Vega warm excess shares many similar properties with the one found around Fomalhaut. The emission shortward of approximately 30 mu m from both warm components is well described as a blackbody emission of approximately 170 K. Interestingly, two other systems, epsilon Eri and HR 8799, also show such an unresolved warm dust using the same approach. These warm components may be analogous to the solar system's zodiacal dust cloud, but of far greater mass (fractional luminosity of approximately 10 (super -5) to 10 (super -6) compared to 10 (super -8) to 10 (super -7) ). The dust temperature and tentative detections in the submillimeter suggest that the warm excess arises from dust associated with a planetesimal ring located near the water-frost line and presumably created by processes occurring at similar locations in other debris systems as well. We also review the properties of the 2 mu m hot excess around Vega and Fomalhaut, showing that the dust responsible for the hot excess is not spatially associated with the dust we detected in the warm belt. We suggest it may arise from hot nano grains trapped in the magnetic field of the star. Finally, the separation between the warm and cold belt is rather large with an orbital ratio > or =10 in all four systems. In light of the current upper limits on the masses of planetary objects and the large gap, we discuss the possible implications for their underlying planetary architecture and suggest that multiple, low-mass planets likely reside between the two belts in Vega and Fomalhaut. Copyright (Copyright) 2013. The American Astronomical Society. All rights reserved. JF - The Astrophysical Journal AU - Su, Kate Y L AU - Rieke, George H AU - Malhotra, Renu AU - Stapelfeldt, Karl R AU - Hughes, A Meredith AU - Bonsor, Amy AU - Wilner, David J AU - Balog, Zoltan AU - Watson, Dan M AU - Werner, Michael W AU - Misselt, Karl A Y1 - 2013/02/01/ PY - 2013 DA - 2013 Feb 01 EP - Paper no. 118 PB - IOP Publishing for American Astronomical Society, Bristol VL - 763 IS - 2 SN - 0004-637X, 0004-637X KW - Fomalhaut KW - asteroids KW - asteroid belts KW - Spitzer Space Telescope KW - debris disks KW - planetesimals KW - Vega KW - temperature KW - infrared spectra KW - photosphere KW - mass KW - photometry KW - cosmic dust KW - detection KW - stars KW - spectra KW - planetary systems KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1566816166?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+Astrophysical+Journal&rft.atitle=Asteroid+belts+in+debris+disk+twins%3B+Vega+and+Fomalhaut&rft.au=Su%2C+Kate+Y+L%3BRieke%2C+George+H%3BMalhotra%2C+Renu%3BStapelfeldt%2C+Karl+R%3BHughes%2C+A+Meredith%3BBonsor%2C+Amy%3BWilner%2C+David+J%3BBalog%2C+Zoltan%3BWatson%2C+Dan+M%3BWerner%2C+Michael+W%3BMisselt%2C+Karl+A&rft.aulast=Su&rft.aufirst=Kate+Y&rft.date=2013-02-01&rft.volume=763&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%2F763%2F2%2F118 L2 - http://iopscience.iop.org/0004-637X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data supplied by IOP Publishing Ltd., London, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 87 N1 - Document feature - illus. N1 - Last updated - 2014-10-02 N1 - SubjectsTermNotLitGenreText - asteroid belts; asteroids; cosmic dust; debris disks; detection; Fomalhaut; infrared spectra; mass; photometry; photosphere; planetary systems; planetesimals; spectra; Spitzer Space Telescope; stars; temperature; Vega DO - http://dx.doi.org/10.1088/0004-637X/763/2/118 ER - TY - JOUR T1 - The response of the North American Monsoon to increased greenhouse gas forcing AN - 1560125717; 20635331 AB - We analyze the response of the North American Monsoon (NAM) to increased greenhouse gas (GHG) forcing (emissions scenario RCP 8.5) using new simulations available through the Coupled Model Intercomparison Project version 5 (CMIP5). Changes in total monsoon season rainfall with GHG warming are small and insignificant. The models do, however, show significant declines in early monsoon season precipitation (June-July) and increases in late monsoon season (September-October) precipitation, indicating a shift in seasonality toward delayed onset and withdrawal of the monsoon. Early in the monsoon season, tropospheric warming increases vertical stability, reinforced by reductions in available surface moisture, inhibiting precipitation and delaying the onset of the monsoon. By the end of the monsoon season, moisture convergence is sufficient to overcome the warming induced stability increases, and precipitation is enhanced. Even with no change in total NAM rainfall, shifts in the seasonal distribution of precipitation within the NAM region are still likely to have significant societal and ecological consequences, reinforcing the need to not only understand the magnitude, but also the timing, of future precipitation changes. Key Points * Warming suppresses early monsoon rainfall and enhances late monsoon rainfall * Early declines are caused by increased stability due to upper level warming * Later increases occur once moisture convergence can overcome increased stability JF - Journal of Geophysical Research: Atmospheres AU - Cook, B I AU - Seager, R AD - NASA Goddard Institute for Space Studies, 2880 Broadway, New York, New York, USA, 10025. Y1 - 2013/02// PY - 2013 DA - February 2013 SP - 1690 EP - 1699 PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD United Kingdom VL - 118 IS - 4 SN - 2169-897X, 2169-897X KW - Pollution Abstracts; Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Selective Withdrawal KW - Moisture KW - Vertical stability KW - Atmospheric pollution models KW - Rainfall KW - Climate change KW - Future precipitation KW - North American monsoon KW - Convergence KW - Emissions KW - Seasonal variability KW - Seasonal variations KW - Timing KW - Monsoon rainfall KW - Seasonality KW - North America KW - Seasonal Distribution KW - Simulation KW - Troposphere KW - Greenhouse effect KW - Seasonal distribution KW - Precipitation KW - Model Studies KW - Numerical simulations KW - Greenhouse gases KW - Monsoons KW - Q2 09243:Structure, mechanics and thermodynamics KW - AQ 00006:Sewage KW - P 0000:AIR POLLUTION KW - SW 0810:General KW - M2 551.578.1:Liquid (551.578.1) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1560125717?accountid=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+Geophysical+Research%3A+Atmospheres&rft.atitle=The+response+of+the+North+American+Monsoon+to+increased+greenhouse+gas+forcing&rft.au=Cook%2C+B+I%3BSeager%2C+R&rft.aulast=Cook&rft.aufirst=B&rft.date=2013-02-01&rft.volume=118&rft.issue=4&rft.spage=1690&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2Fjgrd.50111 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-09-01 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Seasonality; Vertical stability; Climate change; Troposphere; Seasonal distribution; Greenhouse effect; Monsoons; Monsoon rainfall; Atmospheric pollution models; North American monsoon; Numerical simulations; Convergence; Future precipitation; Seasonal variability; Precipitation; Greenhouse gases; Rainfall; Emissions; Simulation; Seasonal variations; Timing; Selective Withdrawal; Moisture; Seasonal Distribution; Model Studies; North America DO - http://dx.doi.org/10.1002/jgrd.50111 ER - TY - JOUR T1 - Composition of the Rheasilvia Basin, a window into Vesta's interior AN - 1549620746; 2014-059237 AB - The estimated excavation depth of the huge Rheasilvia impact basin is nearly twice the likely thickness of the Vestan basaltic crust, so the mantle should be exposed. Spectral mapping by the Dawn spacecraft reveals orthopyroxene-rich materials, similar to diogenite meteorites, in the deepest parts of the basin and within its walls. Significant amounts of olivine are predicted for the mantles of bulk-chondritic bodies like Vesta, and its occurrence is demonstrated by some diogenites that are harzburgite and dunite. However, olivine has so far escaped detection by Dawn's instruments. Spectral detection of olivine in the presence of orthopyroxene is difficult in samples with <25% olivine, and olivine in Rheasilvia might have been diluted during impact mixing or covered by the collapse of basin walls. The distribution of diogenite inferred from its exposures in and around Rheasilvia provides a geologic context for the formation of these meteorites, but does not clearly distinguish between a magmatic cumulate versus partial melting restite origin for diogenites. The former is favored by geochemical arguments, and crystallization in either a magma ocean or multiple plutons emplaced near the crust-mantle boundary is permitted by Dawn observations. Abstract Copyright (2013), American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - McSween, Harry Y AU - Ammannito, Eleonora AU - Reddy, Vishnu AU - Prettyman, Thomas H AU - Beck, Andrew W AU - De Sanctis, M Cristina AU - Nathues, Andreas AU - Le Corre, Lucille AU - O'Brien, David P AU - Yamashita, Naoyuki AU - McCoy, Timothy J AU - Mittlefehldt, David W AU - Toplis, Michael J AU - Schenk, Paul AU - Palomba, Ernesto AU - Turrini, Diego AU - Tosi, Federico AU - Zambon, Francesca AU - Longobardo, Andrea AU - Capaccioni, Fabrizio AU - Raymond, Carol A AU - Russell, Christopher T Y1 - 2013/02// PY - 2013 DA - February 2013 SP - 335 EP - 346 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 2 SN - 2169-9097, 2169-9097 KW - silicates KW - framing camera KW - stony meteorites KW - asteroids KW - Rheasilvia Basin KW - optical spectra KW - mantle KW - olivine group KW - mapping KW - Dawn Mission KW - infrared spectra KW - meteorites KW - pyroxene group KW - cumulates KW - olivine KW - orthosilicates KW - composition KW - basins KW - spectra KW - chemical composition KW - chain silicates KW - GRaND KW - magma oceans KW - Vesta Asteroid KW - HED meteorites KW - diogenite KW - achondrites KW - restites KW - nesosilicates KW - Gamma Ray and Neutron Detector KW - planetary interiors KW - orthopyroxene KW - regolith 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/1549620746?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Composition+of+the+Rheasilvia+Basin%2C+a+window+into+Vesta%27s+interior&rft.au=McSween%2C+Harry+Y%3BAmmannito%2C+Eleonora%3BReddy%2C+Vishnu%3BPrettyman%2C+Thomas+H%3BBeck%2C+Andrew+W%3BDe+Sanctis%2C+M+Cristina%3BNathues%2C+Andreas%3BLe+Corre%2C+Lucille%3BO%27Brien%2C+David+P%3BYamashita%2C+Naoyuki%3BMcCoy%2C+Timothy+J%3BMittlefehldt%2C+David+W%3BToplis%2C+Michael+J%3BSchenk%2C+Paul%3BPalomba%2C+Ernesto%3BTurrini%2C+Diego%3BTosi%2C+Federico%3BZambon%2C+Francesca%3BLongobardo%2C+Andrea%3BCapaccioni%2C+Fabrizio%3BRaymond%2C+Carol+A%3BRussell%2C+Christopher+T&rft.aulast=McSween&rft.aufirst=Harry&rft.date=2013-02-01&rft.volume=118&rft.issue=2&rft.spage=335&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2Fjgre.20057 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 - 2014-01-01 N1 - Number of references - 78 N1 - PubXState - DC N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - achondrites; asteroids; basins; chain silicates; chemical composition; composition; crust; cumulates; Dawn Mission; diogenite; framing camera; Gamma Ray and Neutron Detector; GRaND; HED meteorites; infrared spectra; magma oceans; mantle; mapping; meteorites; nesosilicates; olivine; olivine group; optical spectra; orthopyroxene; orthosilicates; planetary interiors; pyroxene group; regolith; restites; Rheasilvia Basin; silicates; spectra; stony meteorites; Vesta Asteroid DO - http://dx.doi.org/10.1002/jgre.20057 ER - TY - JOUR T1 - Vertical distribution of dust and water ice aerosols from CRISM limb-geometry observations AN - 1549619491; 2014-059236 AB - Near-infrared spectra taken in a limb-viewing geometry by the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) on board the Mars Reconnaissance Orbiter provide a useful tool for probing atmospheric structure. Specifically, the observed radiance as a function of wavelength and height above the limb enables the vertical distribution of both dust and water ice aerosols to be retrieved. More than a dozen sets of CRISM limb observations have been taken so far providing pole-to-pole cross sections, spanning more than a full Martian year. Radiative transfer modeling is used to model the observations taking into account multiple scattering from aerosols and the spherical geometry of the limb observations. Both dust and water ice vertical profiles often show a significant vertical structure for nearly all seasons and latitudes that is not consistent with the well-mixed or Conrath-v assumptions that have often been used in the past for describing aerosol vertical profiles for retrieval and modeling purposes. Significant variations are seen in the retrieved vertical profiles of dust and water ice aerosol as a function of season. Dust typically extends to higher altitudes ( approximately 40-50 km) during the perihelion season than during the aphelion season (<20 km), and the Hellas region consistently shows more dust mixed to higher altitudes than other locations. Detached water ice clouds are common, and water ice aerosols are observed to cap the dust layer in all seasons. Abstract Copyright (2013), American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Smith, Michael D AU - Wolff, Michael J AU - Clancy, R Todd AU - Kleinboehl, Armin AU - Murchie, Scott L Y1 - 2013/02// PY - 2013 DA - February 2013 SP - 321 EP - 334 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 118 IS - 2 SN - 2169-9097, 2169-9097 KW - near-infrared spectra KW - Hellas Basin KW - altitude KW - optical spectra KW - Mars KW - Compact Reconnaissance Imaging Spectrometer for Mars KW - limb-viewing geometry KW - ice KW - sediments KW - spectra KW - radiative transfer KW - dust storms KW - clouds KW - CRISM KW - clastic sediments KW - atmosphere KW - Mars Reconnaissance Orbiter KW - distribution KW - terrestrial planets KW - models KW - planets KW - dust KW - aerosols KW - seasonal variations KW - latitude KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549619491?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Vertical+distribution+of+dust+and+water+ice+aerosols+from+CRISM+limb-geometry+observations&rft.au=Smith%2C+Michael+D%3BWolff%2C+Michael+J%3BClancy%2C+R+Todd%3BKleinboehl%2C+Armin%3BMurchie%2C+Scott+L&rft.aulast=Smith&rft.aufirst=Michael&rft.date=2013-02-01&rft.volume=118&rft.issue=2&rft.spage=321&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2Fjgre.20047 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 - 2014-01-01 N1 - Number of references - 42 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - aerosols; altitude; atmosphere; clastic sediments; clouds; Compact Reconnaissance Imaging Spectrometer for Mars; CRISM; distribution; dust; dust storms; Hellas Basin; ice; latitude; limb-viewing geometry; Mars; Mars Reconnaissance Orbiter; models; near-infrared spectra; optical spectra; planets; radiative transfer; seasonal variations; sediments; spectra; terrestrial planets DO - http://dx.doi.org/10.1002/jgre.20047 ER - TY - JOUR T1 - Groundwater activity on Mars and implications for a deep biosphere AN - 1507175216; 2014-016671 JF - Nature Geoscience AU - Michalski, Joseph R AU - Cuadros, Javier AU - Niles, Paul B AU - Parnell, John AU - Rogers, A Deanne AU - Wright, Shawn P Y1 - 2013/02// PY - 2013 DA - February 2013 SP - 133 EP - 138 PB - Nature Publishing Group, London VL - 6 IS - 2 SN - 1752-0894, 1752-0894 KW - upwelling KW - impact features KW - sulfates KW - biochemistry KW - astrobiology KW - Mars KW - cosmochemistry KW - ground water KW - terrestrial planets KW - planets KW - paleoenvironment KW - habitability KW - McLaughlin Crater KW - biosphere KW - impact craters KW - geochemistry KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1507175216?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Groundwater+activity+on+Mars+and+implications+for+a+deep+biosphere&rft.au=Michalski%2C+Joseph+R%3BCuadros%2C+Javier%3BNiles%2C+Paul+B%3BParnell%2C+John%3BRogers%2C+A+Deanne%3BWright%2C+Shawn+P&rft.aulast=Michalski&rft.aufirst=Joseph&rft.date=2013-02-01&rft.volume=6&rft.issue=2&rft.spage=133&rft.isbn=&rft.btitle=&rft.title=Nature+Geoscience&rft.issn=17520894&rft_id=info:doi/10.1038%2Fngeo1706 L2 - http://www.nature.com/ngeo/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 50 N1 - Document feature - illus. incl. sects., sketch maps N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - astrobiology; biochemistry; biosphere; cosmochemistry; geochemistry; ground water; habitability; impact craters; impact features; Mars; McLaughlin Crater; paleoenvironment; planets; sulfates; terrestrial planets; upwelling DO - http://dx.doi.org/10.1038/ngeo1706 ER - TY - JOUR T1 - Sea surface temperature in the north tropical Atlantic as a trigger for El Nino/Southern Oscillation events AN - 1507175046; 2014-016666 JF - Nature Geoscience AU - Ham, Yoo-Geun AU - Kug, Jong-Seong AU - Park, Jong-Yeon AU - Jin, Fei-Fei Y1 - 2013/02// PY - 2013 DA - February 2013 SP - 112 EP - 116 PB - Nature Publishing Group, London VL - 6 IS - 2 SN - 1752-0894, 1752-0894 KW - tropical environment KW - ocean circulation KW - sea water KW - La Nina KW - atmosphere KW - anomalies KW - Equatorial Pacific KW - temperature KW - flows KW - El Nino Southern Oscillation KW - Pacific Ocean KW - sea-surface temperature KW - North Atlantic KW - climate forcing KW - climate KW - Atlantic Ocean KW - 07:Oceanography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1507175046?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Sea+surface+temperature+in+the+north+tropical+Atlantic+as+a+trigger+for+El+Nino%2FSouthern+Oscillation+events&rft.au=Ham%2C+Yoo-Geun%3BKug%2C+Jong-Seong%3BPark%2C+Jong-Yeon%3BJin%2C+Fei-Fei&rft.aulast=Ham&rft.aufirst=Yoo-Geun&rft.date=2013-02-01&rft.volume=6&rft.issue=2&rft.spage=112&rft.isbn=&rft.btitle=&rft.title=Nature+Geoscience&rft.issn=17520894&rft_id=info:doi/10.1038%2Fngeo1686 L2 - http://www.nature.com/ngeo/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 30 N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - anomalies; Atlantic Ocean; atmosphere; climate; climate forcing; El Nino Southern Oscillation; Equatorial Pacific; flows; La Nina; North Atlantic; ocean circulation; Pacific Ocean; sea water; sea-surface temperature; temperature; tropical environment DO - http://dx.doi.org/10.1038/ngeo1686 ER - TY - JOUR T1 - Improving retrievals of regional fine particulate matter concentrations from Moderate Resolution Imaging Spectroradiometer (MODIS) and Ozone Monitoring Instrument (OMI) multisatellite observations AN - 1500801696; 19152403 AB - A combination of multiplatform satellite observations and statistical data analysis are used to improve the correlation between estimates of PM sub(2.5) (particulate mass with aerodynamic diameter less that 2.5 mu m) retrieved from satellite observations and ground-level measured PM sub(2.5). Accurate measurements of PM sub(2.5) can be used to assess the impact of air pollution levels on human health and the environment and to validate air pollution models. The area under study is California's San Joaquin Valley (SJV) that has a history of poor particulate air quality. Attempts to use simple linear regressions to estimate PM sub(2.5) from satellite-derived aerosol optical depth (AOD) have not yielded good results. The period of study for this project was from October 2004 to July 2008 for six sites in the SJV. A simple linear regression between surface-measured PM sub(2.5) and satellite-observed AOD (from MODIS [Moderate Resolution Imaging Spectroradiometer]) yields a correlation coefficient of about 0.17 in this region. The correlation coefficient between the measured PM sub(2.5) and that retrieved combining satellite observations in a generalized additive model (GAM) resulted in an improved correlation coefficient of 0.77. The model used combinations of MODIS AOD, OMI (Ozone Monitoring Instrument) AOD, NO sub(2) concentration, and a seasonal variable as parameters. Particularly noteworthy is the fact that the PM sub(2.5) retrieved using the GAM captures many of the PM sub(2.5) exceedances that were not seen in the simple linear regression model. JF - Journal of the Air & Waste Management Association AU - Strawa, A W AU - Chatfield, R B AU - Legg, M AU - Scarnato, B AU - Esswein, R AD - National Aeronautics and Space Administration, Ames Research Center, Moffett Field, CA, USA, Anthony.W.Strawa@nasa.gov PY - 2013 SP - 1434 EP - 1446 PB - Taylor & Francis Group Ltd., 2 Park Square Oxford OX14 4RN United Kingdom VL - 63 IS - 12 SN - 1096-2247, 1096-2247 KW - Meteorological & Geoastrophysical Abstracts; Environment Abstracts; Pollution Abstracts KW - Pollution monitoring KW - Ozone monitoring KW - Atmospheric pollution models KW - Atmospheric pollution measurements KW - USA, California, San Joaquin Valley KW - Remote sensing KW - Statistical analysis KW - Correlations KW - Pollution effects KW - Air quality KW - Particulates KW - Optical analysis KW - Sulfur dioxide KW - Atmospheric pollution and health KW - MODIS (Moderate Resolution Imaging Spectrometer) KW - USA, California KW - Seasonal variations KW - Monitoring instruments KW - Particle size KW - Aerosols KW - Atmospheric pollution KW - Regression models KW - Data analysis KW - Satellites KW - Valleys KW - Particulate atmospheric pollution KW - Air pollution KW - Satellite data KW - Optical depth of aerosols KW - M2 551.510.42:Air Pollution (551.510.42) KW - P 0000:AIR POLLUTION KW - ENA 01:Air Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1500801696?accountid=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+Air+%26+Waste+Management+Association&rft.atitle=Improving+retrievals+of+regional+fine+particulate+matter+concentrations+from+Moderate+Resolution+Imaging+Spectroradiometer+%28MODIS%29+and+Ozone+Monitoring+Instrument+%28OMI%29+multisatellite+observations&rft.au=Strawa%2C+A+W%3BChatfield%2C+R+B%3BLegg%2C+M%3BScarnato%2C+B%3BEsswein%2C+R&rft.aulast=Strawa&rft.aufirst=A&rft.date=2013-02-01&rft.volume=63&rft.issue=12&rft.spage=1434&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+Air+%26+Waste+Management+Association&rft.issn=10962247&rft_id=info:doi/10.1080%2F10962247.2013.822838 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-02-01 N1 - Last updated - 2016-01-21 N1 - SubjectsTermNotLitGenreText - Ozone monitoring; Atmospheric pollution; Atmospheric pollution models; Atmospheric pollution measurements; Regression models; Correlations; Statistical analysis; Air quality; Data analysis; Particulate atmospheric pollution; Satellite data; Atmospheric pollution and health; MODIS (Moderate Resolution Imaging Spectrometer); Optical depth of aerosols; Particle size; Pollution monitoring; Aerosols; Remote sensing; Pollution effects; Particulates; Valleys; Satellites; Air pollution; Optical analysis; Sulfur dioxide; Seasonal variations; Monitoring instruments; USA, California, San Joaquin Valley; USA, California DO - http://dx.doi.org/10.1080/10962247.2013.822838 ER - TY - JOUR T1 - Groundwater depletion in the Middle East from GRACE with implications for transboundary water management in the Tigris-Euphrates-western Iran region AN - 1434007875; 2013-072306 AB - In this study, we use observations from the Gravity Recovery and Climate Experiment (GRACE) satellite mission to evaluate freshwater storage trends in the north-central Middle East, including portions of the Tigris and Euphrates River Basins and western Iran, from January 2003 to December 2009. GRACE data show an alarming rate of decrease in total water storage of approximately -27.2+ or -0.6 mm yr (super -1) equivalent water height, equal to a volume of 143.6 km (super 3) during the course of the study period. Additional remote-sensing information and output from land surface models were used to identify that groundwater losses are the major source of this trend. The approach used in this study provides an example of "best current capabilities" in regions like the Middle East, where data access can be severely limited. Results indicate that the region lost 17.3+ or -2.1 mm yr (super -1) equivalent water height of groundwater during the study period, or 91.3+ or -10.9 km (super 3) in volume. Furthermore, results raise important issues regarding water use in transboundary river basins and aquifers, including the necessity of international water use treaties and resolving discrepancies in international water law, while amplifying the need for increased monitoring for core components of the water budget. Abstract Copyright (2013), American Geophysical Union. All Rights Reserved. JF - Water Resources Research AU - Voss, Katalyn A AU - Famiglietti, James S AU - Lo, Min Hui AU - Linage, Caroline AU - Rodell, Matthew AU - Swenson, Sean C Y1 - 2013/02// PY - 2013 DA - February 2013 SP - 904 EP - 914 PB - American Geophysical Union, Washington, DC VL - 49 IS - 2 SN - 0043-1397, 0043-1397 KW - water storage KW - Iran KW - western Iran KW - Tigris River KW - water management KW - GRACE KW - fresh water KW - rivers KW - satellite methods KW - ground water KW - aquifers KW - Euphrates River KW - fluvial features KW - Asia KW - water resources KW - depletion KW - Middle East KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1434007875?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Groundwater+depletion+in+the+Middle+East+from+GRACE+with+implications+for+transboundary+water+management+in+the+Tigris-Euphrates-western+Iran+region&rft.au=Voss%2C+Katalyn+A%3BFamiglietti%2C+James+S%3BLo%2C+Min+Hui%3BLinage%2C+Caroline%3BRodell%2C+Matthew%3BSwenson%2C+Sean+C&rft.aulast=Voss&rft.aufirst=Katalyn&rft.date=2013-02-01&rft.volume=49&rft.issue=2&rft.spage=904&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1002%2Fwrcr.20078 L2 - http://www.agu.org/journals/wr/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2013-01-01 N1 - Number of references - 116 N1 - PubXState - DC N1 - Document feature - 1 table, sketch map N1 - Last updated - 2013-09-20 N1 - CODEN - WRERAQ N1 - SubjectsTermNotLitGenreText - aquifers; Asia; depletion; Euphrates River; fluvial features; fresh water; GRACE; ground water; Iran; Middle East; rivers; satellite methods; Tigris River; water management; water resources; water storage; western Iran DO - http://dx.doi.org/10.1002/wrcr.20078 ER - TY - JOUR T1 - Gravity of the Arctic Ocean from satellite data with validations using airborne gravimetry; oceanographic implications AN - 1420518064; 2013-065618 AB - Precise mappings of sea surface topography, slope, and gravity of the Arctic Ocean are derived from altimeter data collected by Envisat and ICESat. Both altimeters measured instantaneous sea surface height at leads in the sea ice. To reduce contamination by ice-freeboard signal and tracker noise in Envisat height data, a retracking of the waveform data was performed. Analogous reprocessing of ICESat data was also done. Arctic mean sea surfaces (MSSs) were computed from Envisat data spanning 2002-2008 and ICESat data spanning 2003-2009. Farrell et al. (2012) used these "ICEn" MSSs to estimate mean dynamic topography (MDT). These same Envisat and ICESat data are used, in sea-surface-slope form, to compute the ARCtic Satellite-only (ARCS-2) altimetric marine gravity field. ARCS-2 extends north to 86 degrees N and uses GRACE/GOCE gravity data (GOCO02S) for its long-wavelength (>260 km) components. Use of Envisat data improves the spatial resolution over that of existing Arctic marine gravity fields in many areas. ARCS-2's spatial resolution aids in tracing tectonic fabric-e.g., extinct plate boundaries-over broad areas of the Arctic basin whose tectonic origin remains a mystery. ARCS-2's precision is validated using NASA 2010/2011 Operation IceBridge (OIB) airborne gravimetry. ARCS-2 and OIB gravity along with ICEn-MSS results are employed to locate short-wavelength errors approaching 1 m in current Arctic marine geoids (EGM2008). Precise OIB airborne gravity corroborates that such errors in current geoid/gravity models are widespread in Arctic areas lacking accurate surface gravity data. These geoid errors limit the spatial resolution at which MDT can be mapped. Abstract Copyright (2013), American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research AU - McAdoo, David C AU - Farrell, Sinead Louise AU - Laxon, Seymour AU - Ridout, Andy AU - Zwally, H J AU - Yi, Donghui Y1 - 2013/02// PY - 2013 DA - February 2013 SP - 917 EP - 930 PB - American Geophysical Union, Washington, DC VL - 118 IS - 2 SN - 0148-0227, 0148-0227 KW - sea water KW - sea surface water KW - ICESat KW - ice KW - sea ice KW - ice cover KW - Arctic Ocean KW - altimetry KW - sea-surface temperature KW - satellite methods KW - ice cover distribution KW - 07:Oceanography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1420518064?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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&rft.atitle=Gravity+of+the+Arctic+Ocean+from+satellite+data+with+validations+using+airborne+gravimetry%3B+oceanographic+implications&rft.au=McAdoo%2C+David+C%3BFarrell%2C+Sinead+Louise%3BLaxon%2C+Seymour%3BRidout%2C+Andy%3BZwally%2C+H+J%3BYi%2C+Donghui&rft.aulast=McAdoo&rft.aufirst=David&rft.date=2013-02-01&rft.volume=118&rft.issue=2&rft.spage=917&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research&rft.issn=01480227&rft_id=info:doi/10.1002%2Fjgrc.20080 L2 - http://www.agu.org/journals/jgr/ 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 - 2013-01-01 N1 - Number of references - 45 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - altimetry; Arctic Ocean; ice; ice cover; ice cover distribution; ICESat; satellite methods; sea ice; sea surface water; sea water; sea-surface temperature DO - http://dx.doi.org/10.1002/jgrc.20080 ER - TY - JOUR T1 - Alteration assemblages in the Miller Range and Elephant Moraine regions of Antarctica; comparisons between terrestrial igneous rocks and Martian meteorites AN - 1366816646; 2013-047707 AB - The weathering products present in igneous terrestrial Antarctic samples were analyzed, and compared with those found in the four Miller Range nakhlite Martian meteorites. The aim of these comparisons was to determine which of the alteration phases in the Miller Range nakhlites are produced by terrestrial weathering, and what effect rock composition has on these phases. Antarctic terrestrial samples MIL 05031 and EET 96400, along with the Miller Range nakhlites MIL 03346 and 090032, were found to contain secondary alteration assemblages at their externally exposed surfaces. Despite the difference in primary mineralogy, the assemblages of these rocks consist mostly of sulfates (jarosite in MIL 05031, jarosite and gypsum in EET 96400) and iddingsite-like Fe-clay. As neither of the terrestrial samples contains sulfur-bearing primary minerals, and these minerals are rare in the Miller Range nakhlites, it appears that SO (sub 4) (super 2-) , possibly along with some of the Na (super +) , K (super +) , and Ca (super +) in these phases, was sourced from wind-blown sea spray and biogenic emissions from the southern ocean. Cl enrichment in the terrestrially derived "iddingsite" of MIL 05031 and MIL 03346, and the presence of halite at the exterior edge of MIL 090032, can also be explained by this process. However, jarosite within and around the olivine-bound melt inclusions of MIL 090136 is present in the interior of the meteorite and, therefore, is probably the product of preterrestrial weathering on Mars. Abstract Copyright The Meteoritical Society, 2013. JF - Meteoritics & Planetary Science AU - Hallis, L J Y1 - 2013/02// PY - 2013 DA - February 2013 SP - 165 EP - 179 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 2 SN - 1086-9379, 1086-9379 KW - halides KW - alteration KW - terrestrial environment KW - nakhlite KW - stony meteorites KW - iron oxides KW - Martian meteorites KW - igneous rocks KW - melt inclusions KW - SNC Meteorites KW - meteorites KW - EET 96400 KW - gypsum KW - inclusions KW - MIL 03346 KW - chlorides KW - oxides KW - Miller Range KW - spectra KW - mineral assemblages KW - Miller Range Meteorites KW - MIL 05031 KW - sulfates KW - secondary minerals KW - MIL 090032 KW - Elephant Moraine KW - achondrites KW - weathering KW - halite KW - jarosite KW - Raman spectra KW - Antarctica KW - Victoria Land KW - fluid inclusions KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1366816646?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Alteration+assemblages+in+the+Miller+Range+and+Elephant+Moraine+regions+of+Antarctica%3B+comparisons+between+terrestrial+igneous+rocks+and+Martian+meteorites&rft.au=Hallis%2C+L+J&rft.aulast=Hallis&rft.aufirst=L&rft.date=2013-02-01&rft.volume=48&rft.issue=2&rft.spage=165&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12049 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2013-01-01 N1 - Number of references - 62 N1 - PubXState - AR N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2013-06-13 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - achondrites; alteration; Antarctica; chlorides; EET 96400; Elephant Moraine; fluid inclusions; gypsum; halides; halite; igneous rocks; inclusions; iron oxides; jarosite; Martian meteorites; melt inclusions; meteorites; MIL 03346; MIL 05031; MIL 090032; Miller Range; Miller Range Meteorites; mineral assemblages; nakhlite; oxides; Raman spectra; secondary minerals; SNC Meteorites; spectra; stony meteorites; sulfates; terrestrial environment; Victoria Land; weathering DO - http://dx.doi.org/10.1111/maps.12049 ER - TY - JOUR T1 - Meteorites from meteor showers; a case study of the Taurids AN - 1366816613; 2013-047713 AB - We propose that the Taurid meteor shower may contain bodies able to survive and be recovered as meteorites. We review the expected properties of meteorite-producing fireballs, and suggest that end heights below 35 km and terminal speeds below 10 km s (super -1) are necessary conditions for fireballs expected to produce meteorites. Applying the meteoroid strength index (PE criteria) of Ceplecha and McCrosky (1976) to a suite of 33 photographically recorded Taurid fireballs, we find a large spread in the apparent meteoroid strengths within the stream, including some very strong meteoroids. We also examine in detail the flight behavior of a Taurid fireball (SOMN 101031) and show that it has the potential to be a (small) meteorite-producing event. Similarly, photographic observations of a bright, potential Taurid fireball recorded in November of 1995 in Spain show that it also had meteorite-producing characteristics, despite a very high entry velocity (33 km s (super -1) ). Finally, we note that the recent Maribo meteorite fall may have had a very high entry velocity (28 km s (super -1) ), further suggesting that survival of meteorites at Taurid-like velocities is possible. Application of a numerical entry model also shows plausible survival of meteorites at Taurid-like velocities, provided the initial meteoroids are fairly strong and large, both of which are characteristics found in the Taurid stream. Abstract Copyright The Meteoritical Society, 2013. JF - Meteoritics & Planetary Science AU - Brown, Peter AU - Marchenko, Valerie AU - Moser, Danielle E AU - Weryk, Robert AU - Cooke, William Y1 - 2013/02// PY - 2013 DA - February 2013 SP - 270 EP - 288 PB - Meteoritical Society, Fayetteville, AR VL - 48 IS - 2 SN - 1086-9379, 1086-9379 KW - ablation KW - stony meteorites KW - numerical models KW - strength KW - Maribo Meteorite KW - trajectories KW - carbonaceous chondrites KW - meteoroids KW - photography KW - Southern Ontario Meteor Network KW - meteorites KW - meteor showers KW - fireballs KW - velocity KW - CM chondrites KW - chondrites KW - Taurid meteor shower KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1366816613?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Meteorites+from+meteor+showers%3B+a+case+study+of+the+Taurids&rft.au=Brown%2C+Peter%3BMarchenko%2C+Valerie%3BMoser%2C+Danielle+E%3BWeryk%2C+Robert%3BCooke%2C+William&rft.aulast=Brown&rft.aufirst=Peter&rft.date=2013-02-01&rft.volume=48&rft.issue=2&rft.spage=270&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12055 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2013-01-01 N1 - Number of references - 115 N1 - PubXState - AR N1 - Document feature - illus. incl. 6 tables N1 - Last updated - 2013-06-13 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - ablation; carbonaceous chondrites; chondrites; CM chondrites; fireballs; Maribo Meteorite; meteor showers; meteorites; meteoroids; numerical models; photography; Southern Ontario Meteor Network; stony meteorites; strength; Taurid meteor shower; trajectories; velocity DO - http://dx.doi.org/10.1111/maps.12055 ER - TY - JOUR T1 - The nucleus of Comet 9P/Tempel 1; shape and geology from two flybys AN - 1347460274; 2013-038431 AB - The nucleus of comet Tempel 1 has been investigated at close range during two spacecraft missions separated by one comet orbit of the Sun, 5 1/2 years. The combined imaging covers approximately 70% of the surface of this object which has a mean radius of 2.83 + or - 0.1 km. The surface can be divided into two terrain types: rough, pitted terrain and smoother regions of varying local topography. The rough surface has round depressions from resolution limits ( approximately 10 m/pixel) up to ?1 km across, spanning forms from crisp steep-walled pits, to subtle albedo rings, to topographic rings, with all ranges of morphologic gradation. Three gravitationally low regions of the comet have smoother terrain, parts of which appear to be deposits from minimally modified flows, with other parts likely to be heavily eroded portions of multiple layer piles. Changes observed between the two missions are primarily due to backwasting of scarps bounding one of these probable flow deposits. This style of erosion is also suggested by remnant mesa forms in other areas of smoother terrain. The two distinct terrains suggest either an evolutionary change in processes, topographically-controlled processes, or a continuing interaction of erosion and deposition. JF - Icarus AU - Thomas, P AU - A'Hearn, Michael F AU - Belton, Michael J S AU - Brownlee, Donald E AU - Carcich, Brian T AU - Hermalyn, Brendan AU - Klassen, Kenneth AU - Sackett, S AU - Schultz, Peter H AU - Veverka, Joseph AU - Bhaskaran, S AU - Bodewits, D AU - Chesley, S AU - Clark, B AU - Farnham, Tony L AU - Groussin, Olivier AU - Harris, A AU - Kissel, Jochen AU - Li, J Y AU - Meech, Karen AU - Melosh, J AU - Quick, A AU - Richardson, J AU - Sunshine, J AU - Wellnitz, D Y1 - 2013/02// PY - 2013 DA - February 2013 SP - 453 EP - 466 PB - Elsevier, New York, NY VL - 222 IS - 2 SN - 0019-1035, 0019-1035 KW - cometary nucleus KW - Tempel 1 Comet KW - imagery KW - mesas KW - erosion KW - pits KW - orbits KW - Stardust-NExT Mission KW - erosion features KW - flows KW - Deep Impact Mission KW - photometry KW - topography KW - terrains KW - comets KW - deposition KW - surface features KW - scarps KW - stereo imagery KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1347460274?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+nucleus+of+Comet+9P%2FTempel+1%3B+shape+and+geology+from+two+flybys&rft.au=Thomas%2C+P%3BA%27Hearn%2C+Michael+F%3BBelton%2C+Michael+J+S%3BBrownlee%2C+Donald+E%3BCarcich%2C+Brian+T%3BHermalyn%2C+Brendan%3BKlassen%2C+Kenneth%3BSackett%2C+S%3BSchultz%2C+Peter+H%3BVeverka%2C+Joseph%3BBhaskaran%2C+S%3BBodewits%2C+D%3BChesley%2C+S%3BClark%2C+B%3BFarnham%2C+Tony+L%3BGroussin%2C+Olivier%3BHarris%2C+A%3BKissel%2C+Jochen%3BLi%2C+J+Y%3BMeech%2C+Karen%3BMelosh%2C+J%3BQuick%2C+A%3BRichardson%2C+J%3BSunshine%2C+J%3BWellnitz%2C+D&rft.aulast=Thomas&rft.aufirst=P&rft.date=2013-02-01&rft.volume=222&rft.issue=2&rft.spage=453&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2012.02.037 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 44 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table, sketch maps N1 - Last updated - 2013-05-02 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - cometary nucleus; comets; Deep Impact Mission; deposition; erosion; erosion features; flows; imagery; mesas; orbits; photometry; pits; scarps; Stardust-NExT Mission; stereo imagery; surface features; Tempel 1 Comet; terrains; topography DO - http://dx.doi.org/10.1016/j.icarus.2012.02.037 ER - TY - JOUR T1 - Adapting an existing visualization application for browser-based deployment; a case study from the Tropical Rainfall Measuring Mission AN - 1347457091; 2013-038275 AB - THOR, the Tool for High-resolution Observation Review, is a data viewer for the Tropical Rainfall Measuring Mission (TRMM) and the upcoming Global Precipitation Measurement (GPM) mission. THOR began as a desktop application, but now it can be accessed with a web browser, making THOR one of the first online tools for visualizing TRMM satellite data (http://pps.gsfc.nasa.gov/thor). In this effort, the reuse of the existing visualization code was maximized and the complexity of new code was minimized by avoiding unnecessary functionality, frameworks, or libraries. The simplicity of this approach makes it potentially attractive to researchers wishing to adapt their visualization applications for online deployment. To enable THOR to run within a web browser, three new pieces of code are written. First, the graphical user interface (GUI) of the desktop application is translated into HTML, JavaScript, and CSS. Second, a simple communication mechanism is developed over HTTP. Third, a virtual GUI is created on the server that interfaces with the image-generating routines of the existing desktop application so that these routines do not need to be modified for online use. While the basic functionality of THOR is now available online, prototyping is ongoing for enhanced 3D imaging and other aspects of both THOR Desktop and THOR Online. Because TRMM data products are complex and periodically reprocessed with improved algorithms, having a tool such as THOR is important to analysts at the Precipitation Processing System where the algorithms are tested and the products generated, stored, and distributed. Researchers also have found THOR useful for taking a first look at individual files before writing their own software to perform specialized calculations and analyses. Abstract Copyright (2013) Elsevier, B.V. JF - Computers & Geosciences AU - Kelley, Owen A Y1 - 2013/02// PY - 2013 DA - February 2013 SP - 228 EP - 237 PB - Elsevier, Amsterdam VL - 51 SN - 0098-3004, 0098-3004 KW - United States KW - hydrology KW - three-dimensional models KW - rainfall KW - data processing KW - atmospheric precipitation KW - satellite methods KW - models KW - case studies KW - visualization KW - Oklahoma KW - Tropical Rainfall Measuring Mission KW - natural hazards KW - TRMM KW - storms KW - rain KW - remote sensing KW - 21:Hydrogeology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1347457091?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Computers+%26+Geosciences&rft.atitle=Adapting+an+existing+visualization+application+for+browser-based+deployment%3B+a+case+study+from+the+Tropical+Rainfall+Measuring+Mission&rft.au=Kelley%2C+Owen+A&rft.aulast=Kelley&rft.aufirst=Owen&rft.date=2013-02-01&rft.volume=51&rft.issue=&rft.spage=228&rft.isbn=&rft.btitle=&rft.title=Computers+%26+Geosciences&rft.issn=00983004&rft_id=info:doi/10.1016%2Fj.cageo.2012.10.004 L2 - http://www.sciencedirect.com/science?_ob=JournalURL&_cdi=5840&_auth=y&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=e5198452fad934c6346f38b57511c8e0 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2013-01-01 N1 - Number of references - 80 N1 - Document feature - illus. N1 - Last updated - 2013-05-02 N1 - CODEN - GGEOD5 N1 - SubjectsTermNotLitGenreText - atmospheric precipitation; case studies; data processing; hydrology; models; natural hazards; Oklahoma; rain; rainfall; remote sensing; satellite methods; storms; three-dimensional models; TRMM; Tropical Rainfall Measuring Mission; United States; visualization DO - http://dx.doi.org/10.1016/j.cageo.2012.10.004 ER - TY - JOUR T1 - Climate Models Project Increase in U.S. Wildfire Risk AN - 1328522037; 17905124 AB - Scientists using NASA satellite data and climate models have projected drier conditions likely will cause increased fire activity across the U.S. in coming decades. Other findings about U.S. wildfires, including the amount of carbon emissions and how the length and strength of fire seasons are expected to change under future climate conditions, were also presented at the annual meeting of the American Geophysical Union in San Francisco, CA. JF - Earth Observer AU - Hansen, K AD - NASA's Goddard Space Flight Center, USA, kathryn.h.hansen@nasa.gov Y1 - 2013/02// PY - 2013 DA - February 2013 SP - 46 EP - 47 PB - EOS Project Science Office, NASA Goddard Space Flight Center Greenbelt MD 20771 USA VL - 25 IS - 1 KW - Risk Abstracts; Meteorological & Geoastrophysical Abstracts KW - Fires KW - Climate models KW - Remote sensing KW - Satellites KW - American Geophysical Union KW - Carbon emissions KW - USA KW - Satellite data KW - Wildfire KW - Emissions KW - Seasonal variability KW - Geophysics KW - USA, California, San Francisco KW - Future climates KW - M2 551.581:Latitudinal Influences (551.581) KW - R2 23010:General: Models, forecasting UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1328522037?accountid=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=Earth+Observer&rft.atitle=Climate+Models+Project+Increase+in+U.S.+Wildfire+Risk&rft.au=Hansen%2C+K&rft.aulast=Hansen&rft.aufirst=K&rft.date=2013-02-01&rft.volume=25&rft.issue=1&rft.spage=46&rft.isbn=&rft.btitle=&rft.title=Earth+Observer&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-04-01 N1 - Last updated - 2016-04-29 N1 - SubjectsTermNotLitGenreText - Fires; Satellite data; Climate models; Seasonal variability; American Geophysical Union; Carbon emissions; Future climates; Wildfire; Emissions; Remote sensing; Geophysics; Satellites; USA; USA, California, San Francisco ER - TY - JOUR T1 - NASA Human Research Program Summaries: Visual Impairment Intracranial Pressure Project AN - 1318694845; 17757348 AB - Since the earliest human spaceflights, it has been known that when exposed to the microgravity environment, astronauts experience a shift of fluids from their lower body (more than a liter from each leg) to the chest and head. Evidence includes signs and symptoms such as reduced size of the legs, puffy faces, distended jugular veins, increased stroke volume and cardiac output, headaches, nasal stuffiness, and a feeling of head fullness. This microgravity-induced fluid shift is reversed on return to gravity, causing orthostatic intolerance, a consequence that has been well studied. Recently, evidence is accumulating that the cephalad fluid shift may have more serious consequences for spaceflight crewmembers than previously recognized, especially for crewmembers on long-duration spaceflights. As mission duration on ISS has lengthened, reports of changes in astronauts' vision during spaceflight have increased and NASA Space Life Sciences Medical Operations has instituted greater pre-, in-, and postflight visual testing. As a result, varying degrees of anatomic and functional changes were identified in 10 astronauts who completed long-duration missions. Degradation in near vision, which in some cases continued for longer than 1 yr post mission, has also been identified in other astronauts with long- and/or short-duration flights. The ophthalmic findings in the long-duration crewmembers may be related to idiopathic intracranial hypertension, a syndrome identified on Earth, which suggests that an increase in intracranial pressure (ICP), caused by the headward fluid shift that occurs with exposure to microgravity, may be involved. The syndrome has been designated "visual impairment intracranial pressure" (VHP). This report describes the evidence for this syndrome and efforts to understand the causes and underlying physiology and to develop effective countermeasures and treatment. JF - Aviation, Space, and Environmental Medicine AU - Frey, M A AD - NASA's Human Research Program Office Y1 - 2013/02// PY - 2013 DA - Feb 2013 SP - 163 EP - 164 PB - Aerospace Medical Association, 320 S. Henry St. Alexandria VA 22314-3579 United States VL - 84 IS - 2 SN - 0095-6562, 0095-6562 KW - Health & Safety Science Abstracts KW - Degradation KW - Vision KW - Physiology KW - Research programs KW - Hypertension KW - H 2000:Transportation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1318694845?accountid=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=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.atitle=NASA+Human+Research+Program+Summaries%3A+Visual+Impairment+Intracranial+Pressure+Project&rft.au=Frey%2C+M+A&rft.aulast=Frey&rft.aufirst=M&rft.date=2013-02-01&rft.volume=84&rft.issue=2&rft.spage=163&rft.isbn=&rft.btitle=&rft.title=Aviation%2C+Space%2C+and+Environmental+Medicine&rft.issn=00956562&rft_id=info:doi/10.3357%2FASEM.3543.2013 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-03-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Degradation; Vision; Physiology; Research programs; Hypertension DO - http://dx.doi.org/10.3357/ASEM.3543.2013 ER - TY - JOUR T1 - Multiscale Evaluation of the Improvements in Surface Snow Simulation through Terrain Adjustments to Radiation AN - 1315621262; 17738591 AB - The downwelling shortwave radiation on the earth's land surface is affected by the terrain characteristics of slope and aspect. These adjustments, in turn, impact the evolution of snow over such terrain. This article presents a multiscale evaluation of the impact of terrain-based adjustments to incident shortwave radiation on snow simulations over two midlatitude regions using two versions of the Noah land surface model (LSM). The evaluation is performed by comparing the snow cover simulations against the 500-m Moderate Resolution Imaging Spectroradiometer (MODIS) snow cover product. The model simulations are evaluated using categorical measures, such as the probability of detection of "yes" events (PODy), which measure the fraction of snow cover presence that was correctly simulated, and false alarm ratio (FAR), which measures the fraction of no-snow events that was incorrectly simulated. The results indicate that the terrain-based correction of radiation leads to systematic improvements in the snow cover estimates in both domains and in both LSM versions (with roughly 12% overall improvement in PODy and 5% improvement in FAR), with larger improvements observed during snow accumulation and melt periods. Increased contribution to PODy and FAR improvements is observed over the north- and south-facing slopes, when the overall improvements are stratified to the four cardinal aspect categories. A two-dimensional discrete Haar wavelet analysis for the two study areas indicates that the PODy improvements in snow cover estimation drop to below 10% at scales coarser than 16 km, whereas the FAR improvements are below 10% at scales coarser than 4 km. JF - Journal of Hydrometeorology AU - Kumar, Sujay V AU - Peters-Lidard, Christa D AU - Mocko, David AU - Tian, Yudong AD - Science Applications International Corporation, Beltsville, and Hydrological Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland Y1 - 2013/02// PY - 2013 DA - February 2013 SP - 220 EP - 232 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 14 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 - Fluid Drops KW - Snow Cover KW - Snow accumulation KW - Wavelet analysis KW - Evaluation KW - Radiation KW - MODIS (Moderate Resolution Imaging Spectrometer) KW - Slopes KW - Downwelling KW - Snow KW - Snow cover KW - Imaging techniques KW - Model Studies KW - Hydrometeorology KW - Hydrometeorological research KW - Satellite data KW - Numerical simulations KW - Wave analysis KW - Evolution KW - SW 5080:Evaluation, processing and publication KW - Q2 09150:Ice KW - AQ 00003:Monitoring and Analysis of Water and Wastes KW - M2 556.12:Precipitation (556.12) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1315621262?accountid=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=Multiscale+Evaluation+of+the+Improvements+in+Surface+Snow+Simulation+through+Terrain+Adjustments+to+Radiation&rft.au=Kumar%2C+Sujay+V%3BPeters-Lidard%2C+Christa+D%3BMocko%2C+David%3BTian%2C+Yudong&rft.aulast=Kumar&rft.aufirst=Sujay&rft.date=2013-02-01&rft.volume=14&rft.issue=1&rft.spage=220&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrometeorology&rft.issn=1525755X&rft_id=info:doi/10.1175%2FJHM-D-12-046.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-03-01 N1 - Number of references - 52 N1 - Last updated - 2016-09-29 N1 - SubjectsTermNotLitGenreText - Downwelling; Snow; Wave analysis; Imaging techniques; Satellite data; Hydrometeorological research; Numerical simulations; Radiation; MODIS (Moderate Resolution Imaging Spectrometer); Wavelet analysis; Snow accumulation; Snow cover; Hydrometeorology; Evaluation; Fluid Drops; Snow Cover; Slopes; Evolution; Model Studies DO - http://dx.doi.org/10.1175/JHM-D-12-046.1 ER - TY - JOUR T1 - Diagnosing the Nature of Land-Atmosphere Coupling: A Case Study of Dry/Wet Extremes in the U.S. Southern Great Plains AN - 1315621213; 17738587 AB - Land-atmosphere (L-A) interactions play a critical role in determining the diurnal evolution of land surface and planetary boundary layer (PBL) temperature and moisture states and fluxes. In turn, these interactions regulate the strength of the connection between surface moisture and precipitation in a coupled system. To address model deficiencies, recent studies have focused on development of diagnostics to quantify the strength and accuracy of the land-PBL coupling at the process level. In this paper, a diagnosis of the nature and impacts of local land-atmosphere coupling (LoCo) during dry and wet extreme conditions is presented using a combination of models and observations during the summers of 2006 and 2007 in the U.S. southern Great Plains. A range of diagnostics exploring the links and feedbacks between soil moisture and precipitation is applied to the dry/wet regimes exhibited in this region, and in the process, a thorough evaluation of nine different land-PBL scheme couplings is conducted under the umbrella of a high-resolution regional modeling test bed. Results show that the sign and magnitude of errors in land surface energy balance components are sensitive to the choice of land surface model, regime type, and running mode. In addition, LoCo diagnostics show that the sensitivity of L-A coupling is stronger toward the land during dry conditions, while the PBL scheme coupling becomes more important during the wet regime. Results also demonstrate how LoCo diagnostics can be applied to any modeling system (e.g., reanalysis products) in the context of their integrated impacts on the process chain connecting the land surface to the PBL and in support of hydrological anomalies. JF - Journal of Hydrometeorology AU - Santanello, Joseph A, Jr AU - Peters-Lidard, Christa D AU - Kennedy, Aaron AU - Kumar, Sujay V AD - NASA GSFC Hydrological Sciences Branch, Greenbelt, Maryland Y1 - 2013/02// PY - 2013 DA - Feb 2013 SP - 3 EP - 24 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 14 IS - 1 SN - 1525-755X, 1525-755X KW - Aqualine Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Hydrological Regime KW - Moisture KW - Model Testing KW - Data reanalysis KW - Evaluation KW - Hydrologic Models KW - Atmospheric boundary layer KW - Hydrologic analysis KW - Precipitation KW - USA KW - Strength KW - Hydrometeorological research KW - Energy balance KW - Regional-scale models KW - Energy balance components KW - Boundary layers KW - Land-atmosphere interaction KW - Soil moisture KW - Evolution KW - Q2 09188:Atmospheric chemistry KW - AQ 00006:Sewage KW - SW 5080:Evaluation, processing and publication KW - M2 556.14:Infiltration/Soil Moisture (556.14) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1315621213?accountid=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=Diagnosing+the+Nature+of+Land-Atmosphere+Coupling%3A+A+Case+Study+of+Dry%2FWet+Extremes+in+the+U.S.+Southern+Great+Plains&rft.au=Santanello%2C+Joseph+A%2C+Jr%3BPeters-Lidard%2C+Christa+D%3BKennedy%2C+Aaron%3BKumar%2C+Sujay+V&rft.aulast=Santanello&rft.aufirst=Joseph&rft.date=2013-02-01&rft.volume=14&rft.issue=1&rft.spage=3&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrometeorology&rft.issn=1525755X&rft_id=info:doi/10.1175%2FJHM-D-12-023.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-03-01 N1 - Number of references - 41 N1 - Last updated - 2014-05-02 N1 - SubjectsTermNotLitGenreText - Energy balance; Boundary layers; Hydrometeorological research; Hydrologic analysis; Regional-scale models; Energy balance components; Precipitation; Atmospheric boundary layer; Soil moisture; Land-atmosphere interaction; Data reanalysis; Evaluation; Moisture; Hydrological Regime; Strength; Hydrologic Models; Model Testing; Evolution; USA DO - http://dx.doi.org/10.1175/JHM-D-12-023.1 ER - TY - JOUR T1 - A Comparison of the Water Budgets between Clouds from AMMA and TWP-ICE AN - 1315609744; 17701425 AB - Two field campaigns, the African Monsoon Multidisciplinary Analysis (AMMA) and the Tropical Warm Pool-International Cloud Experiment (TWP-ICE), took place in 2006 near Niamey, Niger, and Darwin, Northern Territory, Australia, providing extensive observations of mesoscale convective systems (MCSs) near a desert and a tropical coast, respectively. Under the constraint of their observations, three-dimensional cloud-resolving model simulations are carried out and presented in this paper to replicate the basic characteristics of the observed MCSs. All of the modeled MCSs exhibit a distinct structure having deep convective clouds accompanied by stratiform and anvil clouds. In contrast to the approximately 100-km-scale MCSs observed in TWP-ICE, the MCSs in AMMA have been successfully simulated with a scale of about 400 km. These modeled AMMA and TWP-ICE MCSs offer an opportunity to understand the structure and mechanism of MCSs. Comparing the water budgets between AMMA and TWP-ICE MCSs suggests that TWP-ICE convective clouds have stronger ascent while the mesoscale ascent outside convective clouds in AMMA is stronger. A case comparison, with the aid of sensitivity experiments, also suggests that vertical wind shear and ice crystal (or dust aerosol) concentration can significantly impact stratiform and anvil clouds (e.g., their areas) in MCSs. In addition, the obtained water budgets quantitatively describe the transport of water between convective, stratiform, and anvil regions as well as water sources/sinks from microphysical processes, providing information that can be used to help determine parameters in the convective and cloud parameterizations in general circulation models (GCMs). JF - Journal of the Atmospheric Sciences AU - Zeng, Xiping AU - Tao, Wei-Kuo AU - Powell, Scott W AU - Houze, Robert A, Jr AU - Ciesielski, Paul AU - Guy, Nick AU - Pierce, Harold AU - Matsui, Toshihisa AD - Mesoscale Atmospheric Processes Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland Y1 - 2013/02// PY - 2013 DA - Feb 2013 SP - 487 EP - 503 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 70 IS - 2 SN - 0022-4928, 0022-4928 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Niger, Niamey KW - Anvils KW - Atmospheric sciences KW - African monsoon KW - Water budget KW - Hydrologic Budget KW - Sinks KW - Storms KW - Comparative studies KW - ISEW, Australia, Northern Terr. KW - Ocean-atmosphere system KW - Coasts KW - ISEW, Australia, Northern Terr., Darwin KW - Marine KW - Ice KW - Aerosols KW - Wind shear KW - Atmospheric circulation KW - Dusts KW - Model Studies KW - Niger KW - Clouds KW - Vertical wind shear KW - Numerical simulations KW - General circulation models KW - Convective activity KW - Cloud parameterization KW - Eolian dust KW - SW 5010:Network design KW - M2 551.510.42:Air Pollution (551.510.42) KW - Q2 09124:Coastal zone management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1315609744?accountid=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=A+Comparison+of+the+Water+Budgets+between+Clouds+from+AMMA+and+TWP-ICE&rft.au=Zeng%2C+Xiping%3BTao%2C+Wei-Kuo%3BPowell%2C+Scott+W%3BHouze%2C+Robert+A%2C+Jr%3BCiesielski%2C+Paul%3BGuy%2C+Nick%3BPierce%2C+Harold%3BMatsui%2C+Toshihisa&rft.aulast=Zeng&rft.aufirst=Xiping&rft.date=2013-02-01&rft.volume=70&rft.issue=2&rft.spage=487&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+Atmospheric+Sciences&rft.issn=00224928&rft_id=info:doi/10.1175%2FJAS-D-12-050.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-03-01 N1 - Number of references - 68 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Comparative studies; Wind shear; Aerosols; Atmospheric sciences; Water budget; Ocean-atmosphere system; Atmospheric circulation; Storms; Eolian dust; Vertical wind shear; Clouds; Anvils; Numerical simulations; African monsoon; General circulation models; Convective activity; Cloud parameterization; Ice; Sinks; Hydrologic Budget; Dusts; Coasts; Model Studies; Niger, Niamey; Niger; ISEW, Australia, Northern Terr., Darwin; ISEW, Australia, Northern Terr.; Marine DO - http://dx.doi.org/10.1175/JAS-D-12-050.1 ER - TY - JOUR T1 - Assimilation of Precipitation-Affected Radiances in a Cloud-Resolving WRF Ensemble Data Assimilation System AN - 1291613257; 17682270 AB - Assimilation of remotely sensed precipitation observations into numerical weather prediction models can improve precipitation forecasts and extend prediction capabilities in hydrological applications. This paper presents a new regional ensemble data assimilation system that assimilates precipitation-affected microwave radiances into the Weather Research and Forecasting Model (WRF). To meet the challenges in satellite data assimilation involving cloud and precipitation processes, hydrometeors produced by the cloud-resolving model are included as control variables and ensemble forecasts are used to estimate flow-dependent background error covariance. Two assimilation experiments have been conducted using precipitation-affected radiances from passive microwave sensors: one for a tropical storm after landfall and the other for a heavy rain event in the southeastern United States. The experiments examined the propagation of information in observed radiances via flow-dependent background error auto- and cross covariance, as well as the error statistics of observational radiance. The results show that ensemble assimilation of precipitation-affected radiances improves the quality of precipitation analyses in terms of spatial distribution and intensity in accumulated surface rainfall, as verified by independent ground-based precipitation observations. JF - Monthly Weather Review AU - Zhang, Sara Q AU - Zupanski, Milija AU - Hou, Arthur Y AU - Lin, Xin AU - Cheung, Samson H AD - NASA Goddard Space Flight Center, Greenbelt, Maryland Y1 - 2013/02// PY - 2013 DA - February 2013 SP - 754 EP - 772 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 141 IS - 2 SN - 0027-0644, 0027-0644 KW - Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts KW - Prediction KW - Statistics KW - Spatial distribution KW - Sensors KW - Rainfall KW - Statistical analysis KW - USA, Southeast KW - Data assimilation KW - Storms KW - Radiance KW - Hydrologic Models KW - Microwaves KW - Precipitation forecasts KW - Weather forecasting KW - Weather KW - Mathematical models KW - Precipitation processes KW - Satellite data assimilation KW - Precipitation KW - Errors KW - Tropical depressions KW - Clouds KW - Hydrometeors KW - Q2 09393:Remote geosensing KW - AQ 00006:Sewage KW - SW 5040:Data acquisition KW - O 4080:Pollution - Control and Prevention KW - M2 551.509.1/.5:Forecasting (551.509.1/.5) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1291613257?accountid=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=Monthly+Weather+Review&rft.atitle=Assimilation+of+Precipitation-Affected+Radiances+in+a+Cloud-Resolving+WRF+Ensemble+Data+Assimilation+System&rft.au=Zhang%2C+Sara+Q%3BZupanski%2C+Milija%3BHou%2C+Arthur+Y%3BLin%2C+Xin%3BCheung%2C+Samson+H&rft.aulast=Zhang&rft.aufirst=Sara&rft.date=2013-02-01&rft.volume=141&rft.issue=2&rft.spage=754&rft.isbn=&rft.btitle=&rft.title=Monthly+Weather+Review&rft.issn=00270644&rft_id=info:doi/10.1175%2FMWR-D-12-00055.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-02-01 N1 - Number of references - 39 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Prediction; Radiance; Mathematical models; Microwaves; Sensors; Hydrometeors; Tropical depressions; Weather forecasting; Clouds; Precipitation processes; Spatial distribution; Satellite data assimilation; Statistical analysis; Precipitation; Storms; Precipitation forecasts; Data assimilation; Weather; Statistics; Hydrologic Models; Rainfall; Errors; USA, Southeast DO - http://dx.doi.org/10.1175/MWR-D-12-00055.1 ER - TY - NEWS T1 - Comet of the Century? AN - 1278902704 JF - UPI Space Daily AU - Dr. Tony Phillips for NASA Science News Y1 - 2013/01/25/ PY - 2013 DA - 2013 Jan 25 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1278902704?accountid=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=Comet+of+the+Century%3F&rft.au=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2013-01-25&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 - 2013-01-26 ER - TY - JOUR T1 - The first aerosol indirect effect quantified through airborne remote sensing during VOCALS-REx AN - 1315624598; 17703099 AB - The first aerosol indirect effect (1AIE) is investigated using a combination of in situ and remotely-sensed aircraft (NCAR C-130) observations acquired during VOCALS-REx over the southeast Pacific stratocumulus cloud regime. Satellite analyses have previously identified a high albedo susceptibitility to changes in cloud microphysics and aerosols over this region. The 1AIE was broken down into the product of two independently-estimated terms: the cloud aerosol interaction metric ACI sub( tau ) =dln tau /dlnN sub(a)| sub(LWP) , and the relative albedo (A) susceptibility S sub(R- tau ) =dA/3dln tau | sub(LWP), with tau and N sub(a) denoting retrieved cloud optical thickness and in situ aerosol concentration respectively and calculated for fixed intervals of liquid water path (LWP). ACI sub( tau ) was estimated by combining in situ N sub(a) sampled below the cloud, with tau and LWP derived from, respectively, simultaneous upward-looking broadband irradiance and narrow field-of-view millimeter-wave radiometer measurements, collected at 1 Hz during four eight-hour daytime flights by the C-130 aircraft. ACI sub( tau ) values were typically large, close to the physical upper limit (0.33), with a modest increase with LWP. The high ACI sub( tau ) values slightly exceed values reported from many previous in situ airborne studies in pristine marine stratocumulus and reflect the imposition of a LWP constraint and simultaneity of aerosol and cloud measurements. S sub(R- tau ) increased with LWP and tau , reached a maximum S sub(R- tau ) (0.086) for LWP ( tau ) of 58 g m super(-2) ( similar to 14), and decreased slightly thereafter. The 1AIE thus increased with LWP and is comparable to a radiative forcing of -3.2- -3.8 W m super(-2) for a 10% increase in N sub(a), exceeding previously-reported global-range values. The aircraft-derived values are consistent with satellite estimates derived from instantaneous, collocated Clouds and the Earth's Radiant Energy System (CERES) albedo and MOderate resolution Imaging Spectroradiometer (MODIS)-retrieved droplet number concentrations at 50 km resolution. The consistency of the airborne and satellite estimates, despite their independent approaches, differences in observational scales, and retrieval assumptions, is hypothesized to reflect the ideal remote sensing conditions for these homogeneous clouds. We recommend the southeast Pacific for regional model assessments of the first aerosol indirect effect on this basis. This airborne remotely-sensed approach towards quantifying 1AIE should in theory be more robust than in situ calculations because of increased sampling. However, although the technique does not explicitly depend on a remotely-derived cloud droplet number concentration (N sub(d)), the at-times unrealistically-high N sub(d) values suggest more emphasis on accurate airborne radiometric measurements is needed to refine this approach. JF - Atmospheric Chemistry and Physics AU - Painemal, D AU - Zuidema, P AD - NASA Langley Research Center, Hampton, VA, USA Y1 - 2013/01/22/ PY - 2013 DA - 2013 Jan 22 SP - 917 EP - 931 PB - European Geophysical Society, Max-Planck-Str. 13 Katlenburg-Lindau Germany VL - 13 IS - 2 SN - 1680-7316, 1680-7316 KW - Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Remote Sensing KW - Remote sensing KW - ISE, Pacific KW - Aerial surveys KW - Aerosol interaction KW - Radiometers KW - Radiative forcing KW - Assessments KW - Asteroids KW - Aircraft KW - Sampling KW - Satellite Technology KW - Airborne sensing KW - Aerosols KW - Marine stratocumulus KW - Albedo KW - Aircraft observations KW - Imaging techniques KW - Model Studies KW - Cloud droplet concentration KW - Clouds KW - Atmospheric chemistry KW - Q2 09205:Noise and bioacoustics KW - M2 551.510.42:Air Pollution (551.510.42) KW - SW 5040:Data acquisition KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1315624598?accountid=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+Chemistry+and+Physics&rft.atitle=The+first+aerosol+indirect+effect+quantified+through+airborne+remote+sensing+during+VOCALS-REx&rft.au=Painemal%2C+D%3BZuidema%2C+P&rft.aulast=Painemal&rft.aufirst=D&rft.date=2013-01-22&rft.volume=13&rft.issue=2&rft.spage=917&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Chemistry+and+Physics&rft.issn=16807316&rft_id=info:doi/10.5194%2Facp-13-917-2013 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-03-01 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Radiometers; Airborne sensing; Aerosols; Aircraft; Albedo; Atmospheric chemistry; Remote sensing; Aerial surveys; Imaging techniques; Aerosol interaction; Clouds; Radiative forcing; Asteroids; Marine stratocumulus; Aircraft observations; Cloud droplet concentration; Remote Sensing; Satellite Technology; Assessments; Sampling; Model Studies; ISE, Pacific DO - http://dx.doi.org/10.5194/acp-13-917-2013 ER - TY - NEWS T1 - PODEX Experiment to Reshape Future of Atmospheric Science AN - 1271972070 JF - UPI Space Daily AU - Kathryn Hansen for NASA Earth News Y1 - 2013/01/22/ PY - 2013 DA - 2013 Jan 22 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1271972070?accountid=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=PODEX+Experiment+to+Reshape+Future+of+Atmospheric+Science&rft.au=Kathryn+Hansen+for+NASA+Earth+News&rft.aulast=Kathryn+Hansen+for+NASA+Earth+News&rft.aufirst=&rft.date=2013-01-22&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 - 2013-01-22 ER - TY - JOUR T1 - Highly depleted ethane and mildly depleted methanol in comet 21P/Giacobini-Zinner; application of a new empirical nu (sub 2) -band model for CH (sub 3) OH near 50 K AN - 1566815749; 2014-077576 AB - We obtained infrared spectra of Comet 21P/Giacobini-Zinner (hereafter 21P/GZ) using NIRSPEC at Keck II on UT 2005 June 3, approximately one month before perihelion, that simultaneously sampled H (sub 2) O, C (sub 2) H (sub 6) , and CH (sub 3) OH. Our production rate for H (sub 2) O (3.885 + or - 0.074 X 10 (super 28) molecules s (super -1) ) was consistent with that measured during other apparitions of 21P/GZ as retrieved from optical, infrared, and radio observations. Our analysis also provided values for rotational temperature (T (sub rot) = 51 + or - 3 K) and the abundance ratio of ortho and para spin populations for water (OPR = 2.99 + or - 0.23, implying a spin temperature exceeding 50 K). Six Q-branches in the nu (sub 7) band of C (sub 2) H (sub 6) provided a production rate (5.27 + or - 0.90 X 10 (super 25) s (super -1) ) that corresponded to an abundance ratio of 0.136 + or - 0.023 X 10 (super -2) relative to H (sub 2) O, confirming the previously reported strong depletion of C (sub 2) H (sub 6) from IR observations during the 1998 apparition, and in qualitative agreement with the depletion of C (sub 2) known from optical studies of 21P/GZ. For CH (sub 3) OH, we applied our recently published quantum model for the nu (sub 3) band to obtain a rotational temperature (48 (super +10) / (sub -7) K) consistent with that obtained for H (sub 2) O. In addition, we developed a new empirical model for the CH (sub 3) OH nu (sub 2) band, based on observations of Comet 8P/Tuttle with NIRSPEC. The application of our nu (sub 2) model to 21P/GZ yielded a production rate in agreement with that obtained from the nu (sub 3) band. Combining results from both nu (sub 2) and nu (sub 3) bands provided a production rate (47.5 + or - 4.4 X10 (super 25) s (super -1) ) that corresponded to an abundance ratio of 1.22 + or - 0.11 X 10 (super -2) relative to H (sub 2) O in 21P/GZ, indicating mild depletion of CH (sub 3) OH. Together with observations of 21P/GZ in 1998, our study provides a measure of primary volatile production rates for this Jupiter family comet over multiple apparitions using high-resolution IR spectroscopy. Copyright (Copyright) 2013. The American Astronomical Society. All rights reserved. JF - The Astrophysical Journal AU - DiSanti, M A AU - Bonev, B P AU - Villanueva, G L AU - Mumma, M J Y1 - 2013/01/20/ PY - 2013 DA - 2013 Jan 20 EP - Paper no. 1 PB - IOP Publishing for American Astronomical Society, Bristol VL - 763 IS - 1 SN - 0004-637X, 0004-637X KW - water KW - aliphatic hydrocarbons KW - ethane KW - alkanes KW - temperature KW - methanol KW - measurement KW - infrared spectra KW - models KW - volatiles KW - organic compounds KW - comets KW - rotation KW - carbon KW - hydrocarbons KW - alcohols KW - spectra KW - Giacobini-Zinner Comet KW - depletion KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1566815749?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+Astrophysical+Journal&rft.atitle=Highly+depleted+ethane+and+mildly+depleted+methanol+in+comet+21P%2FGiacobini-Zinner%3B+application+of+a+new+empirical+nu+%28sub+2%29+-band+model+for+CH+%28sub+3%29+OH+near+50+K&rft.au=DiSanti%2C+M+A%3BBonev%2C+B+P%3BVillanueva%2C+G+L%3BMumma%2C+M+J&rft.aulast=DiSanti&rft.aufirst=M&rft.date=2013-01-20&rft.volume=763&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%2F763%2F1%2F1 L2 - http://iopscience.iop.org/0004-637X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data supplied by IOP Publishing Ltd., London, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 78 N1 - Document feature - illus. incl. 7 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-10-02 N1 - SubjectsTermNotLitGenreText - alcohols; aliphatic hydrocarbons; alkanes; carbon; comets; depletion; ethane; Giacobini-Zinner Comet; hydrocarbons; infrared spectra; measurement; methanol; models; organic compounds; rotation; spectra; temperature; volatiles; water DO - http://dx.doi.org/10.1088/0004-637X/763/1/1 ER - TY - JOUR T1 - Bright and dark polar deposits on Mercury; evidence for surface volatiles AN - 1320154385; 2013-028510 AB - Measurements of surface reflectance of permanently shadowed areas near Mercury's north pole reveal regions of anomalously dark and bright deposits at 1064-nanometer wavelength. These reflectance anomalies are concentrated on poleward-facing slopes and are spatially collocated with areas of high radar backscatter postulated to be the result of near-surface water ice. Correlation of observed reflectance with modeled temperatures indicates that the optically bright regions are consistent with surface water ice, whereas dark regions are consistent with a surface layer of complex organic material that likely overlies buried ice and provides thermal insulation. Impacts of comets or volatile-rich asteroids could have provided both dark and bright deposits. JF - Science AU - Neumann, Gregory A AU - Cavanaugh, John F AU - Sun, Xiaoli AU - Mazarico, Erwan M AU - Smith, David E AU - Zuber, Maria T AU - Mao, Dandan AU - Paige, David A AU - Solomon, Sean C AU - Ernst, Carolyn M AU - Barnouin, Olivier S Y1 - 2013/01/18/ PY - 2013 DA - 2013 Jan 18 SP - 296 EP - 300 PB - American Association for the Advancement of Science, Washington, DC VL - 339 IS - 6117 SN - 0036-8075, 0036-8075 KW - polar regions KW - thermal properties KW - measurement KW - terrestrial planets KW - models KW - brightness KW - planets KW - volatiles KW - topography KW - optical properties KW - Mercury Planet KW - surface features KW - reflectance KW - backscattering KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1320154385?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Bright+and+dark+polar+deposits+on+Mercury%3B+evidence+for+surface+volatiles&rft.au=Neumann%2C+Gregory+A%3BCavanaugh%2C+John+F%3BSun%2C+Xiaoli%3BMazarico%2C+Erwan+M%3BSmith%2C+David+E%3BZuber%2C+Maria+T%3BMao%2C+Dandan%3BPaige%2C+David+A%3BSolomon%2C+Sean+C%3BErnst%2C+Carolyn+M%3BBarnouin%2C+Olivier+S&rft.aulast=Neumann&rft.aufirst=Gregory&rft.date=2013-01-18&rft.volume=339&rft.issue=6117&rft.spage=296&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.1229764 L2 - http://www.sciencemag.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 34 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table, sketch map N1 - Last updated - 2013-03-28 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - backscattering; brightness; measurement; Mercury Planet; models; optical properties; planets; polar regions; reflectance; remote sensing; surface features; terrestrial planets; thermal properties; topography; volatiles DO - http://dx.doi.org/10.1126/science.1229764 ER - TY - JOUR T1 - Thermal stability of volatiles in the north polar region of Mercury AN - 1320154380; 2013-028509 AB - Thermal models for the north polar region of Mercury, calculated from topographic measurements made by the MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) spacecraft, show that the spatial distribution of regions of high radar backscatter is well matched by the predicted distribution of thermally stable water ice. MESSENGER measurements of near-infrared surface reflectance indicate bright surfaces in the coldest areas where water ice is predicted to be stable at the surface, and dark surfaces within and surrounding warmer areas where water ice is predicted to be stable only in the near subsurface. We propose that the dark surface layer is a sublimation lag deposit that may be rich in impact-derived organic material. JF - Science AU - Paige, David A AU - Siegler, Matthew A AU - Harmon, John K AU - Neumann, Gregory A AU - Mazarico, Erwan M AU - Smith, David E AU - Zuber, Maria T AU - Harju, Ellen AU - Delitsky, Mona L AU - Solomon, Sean C Y1 - 2013/01/18/ PY - 2013 DA - 2013 Jan 18 SP - 300 EP - 303 PB - American Association for the Advancement of Science, Washington, DC VL - 339 IS - 6117 SN - 0036-8075, 0036-8075 KW - water KW - MESSENGER Program KW - thermal properties KW - stability KW - cosmochemistry KW - measurement KW - terrestrial planets KW - models KW - brightness KW - planets KW - volatiles KW - ice KW - Mercury Planet KW - surface features KW - geochemistry KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1320154380?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Thermal+stability+of+volatiles+in+the+north+polar+region+of+Mercury&rft.au=Paige%2C+David+A%3BSiegler%2C+Matthew+A%3BHarmon%2C+John+K%3BNeumann%2C+Gregory+A%3BMazarico%2C+Erwan+M%3BSmith%2C+David+E%3BZuber%2C+Maria+T%3BHarju%2C+Ellen%3BDelitsky%2C+Mona+L%3BSolomon%2C+Sean+C&rft.aulast=Paige&rft.aufirst=David&rft.date=2013-01-18&rft.volume=339&rft.issue=6117&rft.spage=300&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.1231106 L2 - http://www.sciencemag.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 39 N1 - PubXState - DC N1 - Document feature - illus. N1 - SuppNotes - Related article by Lucey, P. G., on pp. 282-283 N1 - Last updated - 2013-03-28 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - brightness; cosmochemistry; geochemistry; ice; measurement; Mercury Planet; MESSENGER Program; models; planets; remote sensing; stability; surface features; terrestrial planets; thermal properties; volatiles; water DO - http://dx.doi.org/10.1126/science.1231106 ER - TY - JOUR T1 - Satellite-based assessment of climate controls on US burned area AN - 1315616197; 17703135 AB - Climate regulates fire activity through the buildup and drying of fuels and the conditions for fire ignition and spread. Understanding the dynamics of contemporary climate-fire relationships at national and sub-national scales is critical to assess the likelihood of changes in future fire activity and the potential options for mitigation and adaptation. Here, we conducted the first national assessment of climate controls on US fire activity using two satellite-based estimates of monthly burned area (BA), the Global Fire Emissions Database (GFED, 1997-2010) and Monitoring Trends in Burn Severity (MTBS, 1984-2009) BA products. For each US National Climate Assessment (NCA) region, we analyzed the relationships between monthly BA and potential evaporation (PE) derived from reanalysis climate data at 0.5 degree resolution. US fire activity increased over the past 25 yr, with statistically significant increases in MTBS BA for the entire US and the Southeast and Southwest NCA regions. Monthly PE was strongly correlated with US fire activity, yet the climate driver of PE varied regionally. Fire season temperature and shortwave radiation were the primary controls on PE and fire activity in Alaska, while water deficit (precipitation - PE) was strongly correlated with fire activity in the Plains regions and Northwest US. BA and precipitation anomalies were negatively correlated in all regions, although fuel-limited ecosystems in the Southern Plains and Southwest exhibited positive correlations with longer lead times (6-12 months). Fire season PE increased from the 1980's-2000's, enhancing climate-driven fire risk in the southern and western US where PE-BA correlations were strongest. Spatial and temporal patterns of increasing fire season PE and BA during the 1990's-2000's highlight the potential sensitivity of US fire activity to climate change in coming decades. However, climate-fire relationships at the national scale are complex, based on the diversity of fire types, ecosystems, and ignition sources within each NCA region. Changes in the seasonality or magnitude of climate anomalies are therefore unlikely to result in uniform changes in US fire activity. JF - Biogeosciences AU - Morton, D C AU - Collatz, G J AU - Wang, D AU - Rander son, JT AU - Giglio, L AU - Chen, Y AD - Biospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA Y1 - 2013/01/16/ PY - 2013 DA - 2013 Jan 16 SP - 247 EP - 260 PB - European Geosciences Union, c/o E.O.S.T. Strasbourg Cedex 67084 France VL - 10 IS - 1 SN - 1726-4170, 1726-4170 KW - Ecology Abstracts; Sustainability Science Abstracts; ASFA 1: Biological Sciences & Living Resources; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts KW - Burns KW - Ecosystems KW - Evaporation KW - Rainfall KW - Fuels KW - Climatic changes KW - Lead KW - Radiation KW - Emissions KW - Seasonal variability KW - Seasonal variations KW - Water temperature KW - Databases KW - Evaporation Rate KW - Monitoring KW - Water deficit KW - Ecological distribution KW - Climate change KW - Correlations KW - Statistical analysis KW - Biodiversity KW - Data reanalysis KW - Assessments KW - Climate control KW - USA, Alaska KW - Temperature effects KW - Seasonality KW - Fires KW - Data processing KW - Adaptations KW - Climates KW - Plains KW - Climate KW - Drying KW - Precipitation KW - Adaptability KW - Satellite data KW - SW 5010:Network design KW - Q1 08626:Food technology KW - M3 1010:Issues in Sustainable Development KW - D 04040:Ecosystem and Ecology Studies KW - M2 556.13:Evaporation/Evapotranspiration (556.13) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1315616197?accountid=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=Biogeosciences&rft.atitle=Satellite-based+assessment+of+climate+controls+on+US+burned+area&rft.au=Morton%2C+D+C%3BCollatz%2C+G+J%3BWang%2C+D%3BRander+son%2C+JT%3BGiglio%2C+L%3BChen%2C+Y&rft.aulast=Morton&rft.aufirst=D&rft.date=2013-01-16&rft.volume=10&rft.issue=1&rft.spage=247&rft.isbn=&rft.btitle=&rft.title=Biogeosciences&rft.issn=17264170&rft_id=info:doi/10.5194%2Fbg-10-247-2013 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-03-01 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Seasonality; Temperature effects; Adaptations; Fuels; Ecological distribution; Climate change; Biodiversity; Drying; Burns; Fires; Data processing; Evaporation; Climate; Climatic changes; Statistical analysis; Water temperature; Precipitation; Lead; Databases; Radiation; Seasonal variations; Water deficit; Satellite data; Ecosystems; Climate control; Correlations; Seasonal variability; Data reanalysis; Adaptability; Rainfall; Plains; Emissions; Assessments; Climates; Evaporation Rate; Monitoring; USA, Alaska DO - http://dx.doi.org/10.5194/bg-10-247-2013 ER - TY - NEWS T1 - Solar Variability and Terrestrial Climate AN - 1274585675 JF - UPI Space Daily AU - Dr. Tony Phillips for NASA Science News Y1 - 2013/01/16/ PY - 2013 DA - 2013 Jan 16 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1274585675?accountid=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=Solar+Variability+and+Terrestrial+Climate&rft.au=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aulast=Dr.+Tony+Phillips+for+NASA+Science+News&rft.aufirst=&rft.date=2013-01-16&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 - 2013-01-25 ER - TY - JOUR T1 - Interpreting U-Pb data from primary and secondary features in lunar zircon AN - 1312833895; 2013-021075 AB - In this paper, we describe primary and secondary microstructures and textural characteristics found in lunar zircon and discuss the relationships between these features and the zircon U-Pb isotopic systems and the significance of these features for understanding lunar processes. Lunar zircons can be classified according to: (i) textural relationships between zircon and surrounding minerals in the host breccias, (ii) the internal microstructures of the zircon grains as identified by optical microscopy, cathodoluminescence (CL) imaging and electron backscattered diffraction (EBSD) mapping and (iii) results of in situ ion microprobe analyses of the Th-U-Pb isotopic systems. Primary zircon can occur as part of a cogenetic mineral assemblage (lithic clast) or as an individual mineral clast and is unzoned, or has sector and/or oscillatory zoning. The age of primary zircon is obtained when multiple ion microprobe analyses across the polished surface of the grain give reproducible and essentially concordant data. A secondary set of microstructures, superimposed on primary zircon, include localised recrystallised domains, localised amorphous domains, crystal-plastic deformation, planar deformation features and fractures, and are associated with impact processes. The first two secondary microstructures often yield internally consistent and close to concordant U-Pb ages that we interpret as dating impact events. Others secondary microstructures such as planar deformation features, crystal-plastic deformation and micro-fractures can provide channels for Pb diffusion and result in partial resetting of the U-Pb isotopic systems. Abstract Copyright (2013) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Grange, M L AU - Pidgeon, R T AU - Nemchin, A A AU - Timms, N E AU - Meyer, C Y1 - 2013/01/15/ PY - 2013 DA - 2013 Jan 15 SP - 112 EP - 132 PB - Elsevier, New York, NY VL - 101 SN - 0016-7037, 0016-7037 KW - silicates KW - U/Pb KW - ion probe data KW - isotopes KW - mass spectra KW - lunar breccia KW - Apollo Program KW - electron probe data KW - radioactive isotopes KW - dates KW - metamorphic rocks KW - orthosilicates KW - absolute age KW - Archean KW - spectra KW - chemical composition KW - zircon group KW - breccia KW - Precambrian KW - impactites KW - Moon KW - textures KW - host rocks KW - zircon KW - impact breccia KW - cathodoluminescence KW - nesosilicates KW - lunar samples KW - SHRIMP data KW - Apollo 14 KW - SEM data KW - Apollo 17 KW - 03:Geochronology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1312833895?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Interpreting+U-Pb+data+from+primary+and+secondary+features+in+lunar+zircon&rft.au=Grange%2C+M+L%3BPidgeon%2C+R+T%3BNemchin%2C+A+A%3BTimms%2C+N+E%3BMeyer%2C+C&rft.aulast=Grange&rft.aufirst=M&rft.date=2013-01-15&rft.volume=101&rft.issue=&rft.spage=112&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2012.10.013 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2013-01-01 N1 - Number of references - 55 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2013-02-28 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - absolute age; Apollo 14; Apollo 17; Apollo Program; Archean; breccia; cathodoluminescence; chemical composition; dates; electron probe data; host rocks; impact breccia; impactites; ion probe data; isotopes; lunar breccia; lunar samples; mass spectra; metamorphic rocks; Moon; nesosilicates; orthosilicates; Precambrian; radioactive isotopes; SEM data; SHRIMP data; silicates; spectra; textures; U/Pb; zircon; zircon group DO - http://dx.doi.org/10.1016/j.gca.2012.10.013 ER - TY - JOUR T1 - DECOUPLING PHASE VARIATIONS IN MULTI-PLANET SYSTEMS AN - 1709175865; PQ0001858912 AB - Due to the exquisite photometric precision, transiting exoplanet discoveries from the Kepler mission are enabling several new techniques of confirmation and characterization. One of these newly accessible techniques analyzes the phase variations of planets as they orbit their stars. The predicted phase variation for multi-planet systems can become rapidly complicated and depends upon the period, radius, and albedo distributions for planets in the system. Here we describe the confusion that may occur due to short-period terrestrial planets and/or non-transiting planets in a system, which can add high-frequency correlated noise or low-frequency trends to the data stream. We describe these sources of ambiguity with several examples, including that of our solar system. We further show how decoupling of these signals may be achieved with application to the Kepler-20 and Kepler-33 multi-planet systems. JF - Astrophysical Journal AU - Kane, Stephen R AU - GELINO, DAWN M AD - NASA Exoplanet Science Institute, Caltech, MS 100-22, 770 South Wilson Avenue, Pasadena, CA 91125, USA, skane@ipac.caltech.edu Y1 - 2013/01/10/ PY - 2013 DA - 2013 Jan 10 SP - 1 EP - 8 PB - IOP Publishing, The Public Ledger Building, Suite 929 Philadelphia PA 19106 United States VL - 762 IS - 2 SN - 0004-637X, 0004-637X KW - Pollution Abstracts; Meteorological & Geoastrophysical Abstracts KW - planetary systems KW - techniques: photometric KW - Albedo distribution KW - Stellar planets KW - Albedo KW - Acoustic waves KW - Stellar investigations KW - Noise pollution KW - Solar system research KW - P 5000:LAND POLLUTION KW - M2 523.4:Planets (523.4) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1709175865?accountid=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=DECOUPLING+PHASE+VARIATIONS+IN+MULTI-PLANET+SYSTEMS&rft.au=Kane%2C+Stephen+R%3BGELINO%2C+DAWN+M&rft.aulast=Kane&rft.aufirst=Stephen&rft.date=2013-01-10&rft.volume=762&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%2F762%2F2%2F129 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-09-01 N1 - Last updated - 2015-11-16 N1 - SubjectsTermNotLitGenreText - Albedo distribution; Stellar planets; Acoustic waves; Stellar investigations; Noise pollution; Solar system research; Albedo DO - http://dx.doi.org/10.1088/0004-637X/762/2/129 ER - TY - CPAPER T1 - NPP/JPSS CrIMSS EDR Alogirthm Validation and Tuning T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369231377; 6216750 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Liu, Xu AU - Kizer, S AU - Barnet, C AU - Divakarla, M AU - Nalli, N AU - Gu, D. AU - Zhou, D AU - Larar, A AU - Xiong, X AU - Gambacorta, A AU - Wilson, M AU - Blackwell, W AU - Leslie, R AU - Goldberg, M Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Meteorology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369231377?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=NPP%2FJPSS+CrIMSS+EDR+Alogirthm+Validation+and+Tuning&rft.au=Liu%2C+Xu%3BKizer%2C+S%3BBarnet%2C+C%3BDivakarla%2C+M%3BNalli%2C+N%3BGu%2C+D.%3BZhou%2C+D%3BLarar%2C+A%3BXiong%2C+X%3BGambacorta%2C+A%3BWilson%2C+M%3BBlackwell%2C+W%3BLeslie%2C+R%3BGoldberg%2C+M&rft.aulast=Liu&rft.aufirst=Xu&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - SPoRT: Transitioning NASA and NOAA Experimental Data to the Operational Weather Community T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369231355; 6217263 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Jedlovec, Gary Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Weather KW - Data processing KW - Sports UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369231355?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=SPoRT%3A+Transitioning+NASA+and+NOAA+Experimental+Data+to+the+Operational+Weather+Community&rft.au=Jedlovec%2C+Gary&rft.aulast=Jedlovec&rft.aufirst=Gary&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - The Martian Dust Cycle: Observations and Modeling T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369231314; 6217253 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Kahre, Melinda Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Dust UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369231314?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=The+Martian+Dust+Cycle%3A+Observations+and+Modeling&rft.au=Kahre%2C+Melinda&rft.aulast=Kahre&rft.aufirst=Melinda&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Globally estimating root mean square errors in remotely sensed soil moisture T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369231274; 6216674 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Draper, Clara AU - Reichle, R AU - de Jeu, R. AU - Naeimi, V AU - Parinussa, R AU - Wagner, W Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Soil moisture UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369231274?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Globally+estimating+root+mean+square+errors+in+remotely+sensed+soil+moisture&rft.au=Draper%2C+Clara%3BReichle%2C+R%3Bde+Jeu%2C+R.%3BNaeimi%2C+V%3BParinussa%2C+R%3BWagner%2C+W&rft.aulast=Draper&rft.aufirst=Clara&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - First aerosol indirect effect estimates in marine stratocumulus clouds using airborne observations during VOCALS-REx T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369231243; 6216666 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Painemal, David AU - Zuidema, P Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Clouds KW - Aerosols UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369231243?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=First+aerosol+indirect+effect+estimates+in+marine+stratocumulus+clouds+using+airborne+observations+during+VOCALS-REx&rft.au=Painemal%2C+David%3BZuidema%2C+P&rft.aulast=Painemal&rft.aufirst=David&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Mechanisms of Saharan dust transport and the interactions with the Atlantic ITCZ T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369231232; 6217194 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Lau, William AU - Kim, K Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Atlantic KW - Africa, Sahara Desert KW - Dust UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369231232?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Mechanisms+of+Saharan+dust+transport+and+the+interactions+with+the+Atlantic+ITCZ&rft.au=Lau%2C+William%3BKim%2C+K&rft.aulast=Lau&rft.aufirst=William&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - LASE measurements of water vapor, aerosol, and cloud distributions during GRIP T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369231224; 6216624 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Ismail, Syed AU - Ferrare, R AU - Hair, J AU - Nehrir, A AU - Kooi, S AU - Notari, A AU - Butler, C AU - Fenn, M Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Clouds KW - Aerosols KW - Water vapor UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369231224?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=LASE+measurements+of+water+vapor%2C+aerosol%2C+and+cloud+distributions+during+GRIP&rft.au=Ismail%2C+Syed%3BFerrare%2C+R%3BHair%2C+J%3BNehrir%2C+A%3BKooi%2C+S%3BNotari%2C+A%3BButler%2C+C%3BFenn%2C+M&rft.aulast=Ismail&rft.aufirst=Syed&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Assessment of Trans-Pacific Dust Transport and Its Contributions to North America based on Satellite Measurements T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369231198; 6217274 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Yu, Hongbin AU - Remer, L AU - Chin, M AU - Bian, H AU - Tan, Q AU - Yuan, T AU - Zhang, Y Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - North America KW - Remote sensing KW - Satellites KW - Dust UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369231198?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Assessment+of+Trans-Pacific+Dust+Transport+and+Its+Contributions+to+North+America+based+on+Satellite+Measurements&rft.au=Yu%2C+Hongbin%3BRemer%2C+L%3BChin%2C+M%3BBian%2C+H%3BTan%2C+Q%3BYuan%2C+T%3BZhang%2C+Y&rft.aulast=Yu&rft.aufirst=Hongbin&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Volcanic aerosol contributions to the decadal stratospheric aerosol trend T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369231192; 6217273 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Chin, Mian AU - Diehl, T AU - Tan, Q AU - Krotkov, N AU - Reed, W AU - Vernier, J Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Aerosols KW - Volcanoes KW - Stratosphere UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369231192?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Volcanic+aerosol+contributions+to+the+decadal+stratospheric+aerosol+trend&rft.au=Chin%2C+Mian%3BDiehl%2C+T%3BTan%2C+Q%3BKrotkov%2C+N%3BReed%2C+W%3BVernier%2C+J&rft.aulast=Chin&rft.aufirst=Mian&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Equatorial Oscillations in the Atmospheres of the Giant Planets T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369231130; 6217171 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Flasar, F Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Oscillations UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369231130?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Equatorial+Oscillations+in+the+Atmospheres+of+the+Giant+Planets&rft.au=Flasar%2C+F&rft.aulast=Flasar&rft.aufirst=F&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - The NASA Geostationary Coastal and Air Pollution Events (GEO-CAPE) Mission T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369231026; 6216347 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Al-Saadi, Jassim AU - Bontempi, P AU - Iraci, L AU - Mannino, A AU - Jacob, D AU - Salisbury, J AU - Edwards, D AU - DiGiacomo, P AU - Kondragunta, S AU - Schaeffer, B AU - Scheffe, R AU - Szykman, J AU - Watkins, T Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Air pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369231026?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=The+NASA+Geostationary+Coastal+and+Air+Pollution+Events+%28GEO-CAPE%29+Mission&rft.au=Al-Saadi%2C+Jassim%3BBontempi%2C+P%3BIraci%2C+L%3BMannino%2C+A%3BJacob%2C+D%3BSalisbury%2C+J%3BEdwards%2C+D%3BDiGiacomo%2C+P%3BKondragunta%2C+S%3BSchaeffer%2C+B%3BScheffe%2C+R%3BSzykman%2C+J%3BWatkins%2C+T&rft.aulast=Al-Saadi&rft.aufirst=Jassim&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Impact of Aerosols on Convective Clouds and Precipitation T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369231025; 6216991 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Tao, Wei-Kuo AU - Chen, J AU - Wang, C AU - Zhang, C AU - Li, Z. Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Clouds KW - Aerosols KW - Precipitation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369231025?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Impact+of+Aerosols+on+Convective+Clouds+and+Precipitation&rft.au=Tao%2C+Wei-Kuo%3BChen%2C+J%3BWang%2C+C%3BZhang%2C+C%3BLi%2C+Z.&rft.aulast=Tao&rft.aufirst=Wei-Kuo&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - NASA's Aerosol-Cloud-Ecosystems (ACE) Mission T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369231014; 6216346 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Starr, David Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Meteorology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369231014?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=NASA%27s+Aerosol-Cloud-Ecosystems+%28ACE%29+Mission&rft.au=Starr%2C+David&rft.aulast=Starr&rft.aufirst=David&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Cirrus cloud ice water content in the uppermost troposphere: Six years of observations from the Cloud and Aerosol Lidar with Orthogonal Polarization T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369231013; 6216468 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Avery, Melody AU - Heymsfield, A AU - Winker, D AU - Vaughan, M AU - Young, S AU - Trepte, C Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Clouds KW - Ice KW - Aerosols KW - Troposphere KW - Lidar KW - Polarization KW - Water content UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369231013?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Cirrus+cloud+ice+water+content+in+the+uppermost+troposphere%3A+Six+years+of+observations+from+the+Cloud+and+Aerosol+Lidar+with+Orthogonal+Polarization&rft.au=Avery%2C+Melody%3BHeymsfield%2C+A%3BWinker%2C+D%3BVaughan%2C+M%3BYoung%2C+S%3BTrepte%2C+C&rft.aulast=Avery&rft.aufirst=Melody&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - The Pre-Aerosol, Cloud, ocean Ecosystem (PACE) mission T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369231007; 6216345 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Volz, Stephen Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Clouds KW - Oceans UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369231007?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=The+Pre-Aerosol%2C+Cloud%2C+ocean+Ecosystem+%28PACE%29+mission&rft.au=Volz%2C+Stephen&rft.aulast=Volz&rft.aufirst=Stephen&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Using NASA EOS to Assess Air Quality and Health Risks Associated with the Virginia Dismal Swamp Fires of 2011 for Improved Decision Making T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369231003; 6216467 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Beard, Katherine AU - Mallon, D AU - Mayer, J AU - Chimmel, A AU - Weiser, J AU - Rose, C Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Fires KW - Decision making KW - Health risks KW - Air quality KW - USA, Virginia KW - Swamps UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369231003?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Using+NASA+EOS+to+Assess+Air+Quality+and+Health+Risks+Associated+with+the+Virginia+Dismal+Swamp+Fires+of+2011+for+Improved+Decision+Making&rft.au=Beard%2C+Katherine%3BMallon%2C+D%3BMayer%2C+J%3BChimmel%2C+A%3BWeiser%2C+J%3BRose%2C+C&rft.aulast=Beard&rft.aufirst=Katherine&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Heliophysics: Science, Applications, and Societal Impacts T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369230938; 6216487 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Pulkkinen, Antti Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Meteorology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369230938?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Heliophysics%3A+Science%2C+Applications%2C+and+Societal+Impacts&rft.au=Pulkkinen%2C+Antti&rft.aulast=Pulkkinen&rft.aufirst=Antti&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Regional Climate and Variability of the Summertime Continental United States in Reanalyses T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369230932; 6216929 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Bosilovich, Michael AU - Robertson, F AU - Roberts, J Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - USA KW - Climatic changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369230932?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Regional+Climate+and+Variability+of+the+Summertime+Continental+United+States+in+Reanalyses&rft.au=Bosilovich%2C+Michael%3BRobertson%2C+F%3BRoberts%2C+J&rft.aulast=Bosilovich&rft.aufirst=Michael&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Advances in Multiangle Imaging for Future Satellite Systems T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369230928; 6216485 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Diner, David AU - Garay, M AU - Jovanovic, V AU - Moroney, C AU - Mueller, K AU - Bull, M AU - Geier, S AU - Rheingans, B AU - Xu, F. AU - Chipman, R AU - Davis, A AU - Liu, Y AU - Wu, D. Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Remote sensing KW - Satellites KW - Imaging techniques UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369230928?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Advances+in+Multiangle+Imaging+for+Future+Satellite+Systems&rft.au=Diner%2C+David%3BGaray%2C+M%3BJovanovic%2C+V%3BMoroney%2C+C%3BMueller%2C+K%3BBull%2C+M%3BGeier%2C+S%3BRheingans%2C+B%3BXu%2C+F.%3BChipman%2C+R%3BDavis%2C+A%3BLiu%2C+Y%3BWu%2C+D.&rft.aulast=Diner&rft.aufirst=David&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Observations of C-band brightness temperatures and ocean surface wind speed and rain rate from the Hurricane Imaging Radiometer (HIRAD) during GRIP and HS3 T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369230879; 6216330 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Miller, Timothy AU - James, M AU - Roberts, J AU - Jones, W AU - Biswas, S AU - Ruf, C AU - Uhlhorn, E AU - Atlas, R AU - Black, P AU - Albers, C Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Radiometers KW - Wind speed KW - Temperature effects KW - Hurricanes KW - Brightness KW - Oceans KW - Velocity KW - Rain KW - Surface radiation temperature KW - Imaging techniques UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369230879?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Observations+of+C-band+brightness+temperatures+and+ocean+surface+wind+speed+and+rain+rate+from+the+Hurricane+Imaging+Radiometer+%28HIRAD%29+during+GRIP+and+HS3&rft.au=Miller%2C+Timothy%3BJames%2C+M%3BRoberts%2C+J%3BJones%2C+W%3BBiswas%2C+S%3BRuf%2C+C%3BUhlhorn%2C+E%3BAtlas%2C+R%3BBlack%2C+P%3BAlbers%2C+C&rft.aulast=Miller&rft.aufirst=Timothy&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - New Data and Services Available through the Modeling and Assimilation Data and Information Services Center (MDISC) at the GES DISC T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369230878; 6216809 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Ostrenga, Dana AU - Smith, P AU - Bosilovich, M AU - Reichle, R AU - Da Silva, A Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Data processing KW - Information systems UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369230878?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=New+Data+and+Services+Available+through+the+Modeling+and+Assimilation+Data+and+Information+Services+Center+%28MDISC%29+at+the+GES+DISC&rft.au=Ostrenga%2C+Dana%3BSmith%2C+P%3BBosilovich%2C+M%3BReichle%2C+R%3BDa+Silva%2C+A&rft.aulast=Ostrenga&rft.aufirst=Dana&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Assimilation of SMOS Observations for science development of the SMAP Level 4 Surface and Root-Zone Soil Moisture Product T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369230611; 6215985 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Reichle, Rolf AU - De Lannoy, G. AU - Crow, W AU - Koster, R AU - Kimball, J AU - Liu, Q Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Soil moisture UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369230611?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Assimilation+of+SMOS+Observations+for+science+development+of+the+SMAP+Level+4+Surface+and+Root-Zone+Soil+Moisture+Product&rft.au=Reichle%2C+Rolf%3BDe+Lannoy%2C+G.%3BCrow%2C+W%3BKoster%2C+R%3BKimball%2C+J%3BLiu%2C+Q&rft.aulast=Reichle&rft.aufirst=Rolf&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Development and Validation of Observing System Simulation Experiments at the NASA Global Modeling and Assimilation Office T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369230498; 6216589 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Errico, Ronald AU - Yang, R AU - Prive, N AU - Tai, K AU - Todling, R AU - Sienkiewicz, M AU - Guo, J Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Simulation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369230498?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Development+and+Validation+of+Observing+System+Simulation+Experiments+at+the+NASA+Global+Modeling+and+Assimilation+Office&rft.au=Errico%2C+Ronald%3BYang%2C+R%3BPrive%2C+N%3BTai%2C+K%3BTodling%2C+R%3BSienkiewicz%2C+M%3BGuo%2C+J&rft.aulast=Errico&rft.aufirst=Ronald&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Tropical ocean surface energy balance variability: Linking weather to climate scales T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369230435; 6216954 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Roberts, J AU - Clayson, C Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Weather KW - Surface properties KW - Energy balance KW - Climatic changes KW - Ocean-atmosphere system UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369230435?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Tropical+ocean+surface+energy+balance+variability%3A+Linking+weather+to+climate+scales&rft.au=Roberts%2C+J%3BClayson%2C+C&rft.aulast=Roberts&rft.aufirst=J&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - The Role of Clouds in Polar Amplification T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369230421; 6216592 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Taylor, Patrick AU - Cai, M Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Clouds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369230421?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=The+Role+of+Clouds+in+Polar+Amplification&rft.au=Taylor%2C+Patrick%3BCai%2C+M&rft.aulast=Taylor&rft.aufirst=Patrick&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Modeling glacier and snow melt in the Himalayas: HIMALA BASINS T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369230374; 6216770 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Brown, Molly AU - Tarboton, D AU - Racoviteanu, A AU - Habib, S AU - Shrestha, M AU - Bajracharya, S Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Snow KW - Glaciers KW - Basins KW - Pakistan, Himalayas UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369230374?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Modeling+glacier+and+snow+melt+in+the+Himalayas%3A+HIMALA+BASINS&rft.au=Brown%2C+Molly%3BTarboton%2C+D%3BRacoviteanu%2C+A%3BHabib%2C+S%3BShrestha%2C+M%3BBajracharya%2C+S&rft.aulast=Brown&rft.aufirst=Molly&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Using NASA's Reference Architecture: Comparing Polar and Geo Science Data Processing Systems T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369230221; 6216516 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Ullman, Richard AU - Burnett, M Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Data processing UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369230221?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Using+NASA%27s+Reference+Architecture%3A+Comparing+Polar+and+Geo+Science+Data+Processing+Systems&rft.au=Ullman%2C+Richard%3BBurnett%2C+M&rft.aulast=Ullman&rft.aufirst=Richard&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - A Modeling Study of the On-Going Drought and Heat Wave Over the United States T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369230205; 6215588 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Schubert, Siegfried AU - Wang, H AU - Koster, R AU - Suarez, M Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - USA KW - Heat KW - Heat tolerance KW - Waves KW - Droughts UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369230205?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=A+Modeling+Study+of+the+On-Going+Drought+and+Heat+Wave+Over+the+United+States&rft.au=Schubert%2C+Siegfried%3BWang%2C+H%3BKoster%2C+R%3BSuarez%2C+M&rft.aulast=Schubert&rft.aufirst=Siegfried&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Warm Events at Summit, Greenland During 2012 Relative to an Evolving Climate Record T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369230191; 6216369 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Shuman, Christopher AU - Schnaubelt, M AU - Mefford, T Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Greenland KW - Climate UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369230191?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Warm+Events+at+Summit%2C+Greenland+During+2012+Relative+to+an+Evolving+Climate+Record&rft.au=Shuman%2C+Christopher%3BSchnaubelt%2C+M%3BMefford%2C+T&rft.aulast=Shuman&rft.aufirst=Christopher&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - A Professional Review of NASA's SMAP Mission Pre-Launch Application Effort T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369230190; 6216726 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Escobar, Vanessa AU - Brown, M Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Reviews KW - Experts UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369230190?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=A+Professional+Review+of+NASA%27s+SMAP+Mission+Pre-Launch+Application+Effort&rft.au=Escobar%2C+Vanessa%3BBrown%2C+M&rft.aulast=Escobar&rft.aufirst=Vanessa&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - An Intensity-Modulated CW Laser Absorption Spectrometer Approach for Column CO2 Measurements for the ASCENDS Mission T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369230154; 6216878 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Ismail, Syed AU - Harrison, F AU - Dobler, J AU - Browell, E AU - Nehrir, A AU - Lin, B AU - Meadows, B AU - Vanek, M AU - Obland, M AU - Kooi, S AU - Collins, J AU - Refaat, T AU - Yang, M AU - Choi, Y AU - Dijoseph, M Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Lasers KW - Carbon dioxide UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369230154?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=An+Intensity-Modulated+CW+Laser+Absorption+Spectrometer+Approach+for+Column+CO2+Measurements+for+the+ASCENDS+Mission&rft.au=Ismail%2C+Syed%3BHarrison%2C+F%3BDobler%2C+J%3BBrowell%2C+E%3BNehrir%2C+A%3BLin%2C+B%3BMeadows%2C+B%3BVanek%2C+M%3BObland%2C+M%3BKooi%2C+S%3BCollins%2C+J%3BRefaat%2C+T%3BYang%2C+M%3BChoi%2C+Y%3BDijoseph%2C+M&rft.aulast=Ismail&rft.aufirst=Syed&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Using New Versions of the GPCP and TMPA Data Sets to Assess Interannual Variation of Tropical Precipitation T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369230141; 6216072 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Nelkin, Eric AU - Huffman, G AU - Bolvin, D AU - Adler, R AU - Olson, W AU - Kummerow, C Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Data processing KW - Precipitation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369230141?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Using+New+Versions+of+the+GPCP+and+TMPA+Data+Sets+to+Assess+Interannual+Variation+of+Tropical+Precipitation&rft.au=Nelkin%2C+Eric%3BHuffman%2C+G%3BBolvin%2C+D%3BAdler%2C+R%3BOlson%2C+W%3BKummerow%2C+C&rft.aulast=Nelkin&rft.aufirst=Eric&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - High Altitude Test Flights of the TWiLiTE Direct Detection Doppler Lidar T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369230133; 6216877 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Gentry, Bruce AU - Chen, H AU - Cervantes, J AU - Machan, R AU - Reed, D AU - Mitchell, S AU - Marx, C Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Flight KW - Altitude KW - Lidar UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369230133?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=High+Altitude+Test+Flights+of+the+TWiLiTE+Direct+Detection+Doppler+Lidar&rft.au=Gentry%2C+Bruce%3BChen%2C+H%3BCervantes%2C+J%3BMachan%2C+R%3BReed%2C+D%3BMitchell%2C+S%3BMarx%2C+C&rft.aulast=Gentry&rft.aufirst=Bruce&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Optimal Use of Satellite Data Applications for the Volcanic Ash Threat to Aviation T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369230098; 6216365 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Murray, John AU - Haynes, J AU - Vernier, J AU - Pavolonis, M AU - Krotkov, N Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Data processing KW - Remote sensing KW - Volcanic ash KW - Satellites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369230098?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Optimal+Use+of+Satellite+Data+Applications+for+the+Volcanic+Ash+Threat+to+Aviation&rft.au=Murray%2C+John%3BHaynes%2C+J%3BVernier%2C+J%3BPavolonis%2C+M%3BKrotkov%2C+N&rft.aulast=Murray&rft.aufirst=John&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Toward an integrated approach to improve the utility of operational satellite data for diagnosing icing conditions T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369230092; 6215525 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Smith Jr, William AU - Minnis, P AU - Fleeger, C AU - Chang, F AU - Palikonda, R Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Icing KW - Data processing KW - Remote sensing KW - Satellites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369230092?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Toward+an+integrated+approach+to+improve+the+utility+of+operational+satellite+data+for+diagnosing+icing+conditions&rft.au=Smith+Jr%2C+William%3BMinnis%2C+P%3BFleeger%2C+C%3BChang%2C+F%3BPalikonda%2C+R&rft.aulast=Smith+Jr&rft.aufirst=William&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Current and Future Applications of Multispectral (RGB) Satellite Imagery for Weather Analysis and Forecasting Applications T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369230055; 6215298 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Molthan, Andrew AU - Fuell, K AU - LaFontaine, F AU - McGrath, K AU - Smith, M Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Prediction KW - Satellite sensing KW - Remote sensing KW - Weather forecasting UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369230055?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Current+and+Future+Applications+of+Multispectral+%28RGB%29+Satellite+Imagery+for+Weather+Analysis+and+Forecasting+Applications&rft.au=Molthan%2C+Andrew%3BFuell%2C+K%3BLaFontaine%2C+F%3BMcGrath%2C+K%3BSmith%2C+M&rft.aulast=Molthan&rft.aufirst=Andrew&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - NASA Satellite Observations in Support of National Objecties T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369229985; 6215519 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Kaye, Jack Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Remote sensing KW - Satellites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369229985?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=NASA+Satellite+Observations+in+Support+of+National+Objecties&rft.au=Kaye%2C+Jack&rft.aulast=Kaye&rft.aufirst=Jack&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Respective Strengths and Weaknesses of SciDB, MapReduce-HDFS, and a Custom Technique for a Data-Intensive Analysis System T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369229942; 6216233 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Kuo, Kwo-Sen AU - Rushing, J AU - Ramachandran, R AU - Fekete, G AU - Duffy, D AU - Clune, T Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Customs UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369229942?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Respective+Strengths+and+Weaknesses+of+SciDB%2C+MapReduce-HDFS%2C+and+a+Custom+Technique+for+a+Data-Intensive+Analysis+System&rft.au=Kuo%2C+Kwo-Sen%3BRushing%2C+J%3BRamachandran%2C+R%3BFekete%2C+G%3BDuffy%2C+D%3BClune%2C+T&rft.aulast=Kuo&rft.aufirst=Kwo-Sen&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Assessment of the Community Land Model version 04 snow model output estimates T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369229917; 6215769 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Toure, Ally AU - Rodell, M AU - Yang, Z AU - Zhang, Y AU - Kwon, Y AU - Beaudoing, H Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Snow KW - Models UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369229917?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Assessment+of+the+Community+Land+Model+version+04+snow+model+output+estimates&rft.au=Toure%2C+Ally%3BRodell%2C+M%3BYang%2C+Z%3BZhang%2C+Y%3BKwon%2C+Y%3BBeaudoing%2C+H&rft.aulast=Toure&rft.aufirst=Ally&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Advances in Forecasting of Solar Energetic Particle Event Peak Flux T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369229913; 6216227 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Karelitz, Andrea AU - Pulkkinen, A Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Prediction KW - Particulates KW - Sedimentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369229913?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Advances+in+Forecasting+of+Solar+Energetic+Particle+Event+Peak+Flux&rft.au=Karelitz%2C+Andrea%3BPulkkinen%2C+A&rft.aulast=Karelitz&rft.aufirst=Andrea&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Evaluation of New and Upgraded Land-Surface Models in the North American Land Data Assimilation System (NLDAS) T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369229896; 6215988 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Mocko, David AU - Peters-Lidard, C AU - Kumar, S AU - Xia, Y AU - Ek, M. AU - Dong, J Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - North America KW - Data collection KW - Data processing UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369229896?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Evaluation+of+New+and+Upgraded+Land-Surface+Models+in+the+North+American+Land+Data+Assimilation+System+%28NLDAS%29&rft.au=Mocko%2C+David%3BPeters-Lidard%2C+C%3BKumar%2C+S%3BXia%2C+Y%3BEk%2C+M.%3BDong%2C+J&rft.aulast=Mocko&rft.aufirst=David&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Evaluation of TRMM rain-rate estimates using ground measurements at different time scales T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369229894; 6215479 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Wang, Jianxin AU - Wolff, D AU - Marks, D AU - Pippitt, J Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Meteorology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369229894?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Evaluation+of+TRMM+rain-rate+estimates+using+ground+measurements+at+different+time+scales&rft.au=Wang%2C+Jianxin%3BWolff%2C+D%3BMarks%2C+D%3BPippitt%2C+J&rft.aulast=Wang&rft.aufirst=Jianxin&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Evaluating LSM water budgets in the framework of the LIS-HyMAP system T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369229888; 6215767 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Getirana, Augusto AU - Kumar, S AU - Peters-Lidard, C Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Water budget UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369229888?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Evaluating+LSM+water+budgets+in+the+framework+of+the+LIS-HyMAP+system&rft.au=Getirana%2C+Augusto%3BKumar%2C+S%3BPeters-Lidard%2C+C&rft.aulast=Getirana&rft.aufirst=Augusto&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Multi-Sensor Data Fusion for Hi-Resolution QPE Products over the CONUS T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369229875; 6215477 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Amitai, Eyal Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Data processing KW - Conus UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369229875?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Multi-Sensor+Data+Fusion+for+Hi-Resolution+QPE+Products+over+the+CONUS&rft.au=Amitai%2C+Eyal&rft.aulast=Amitai&rft.aufirst=Eyal&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Online Tools to Inter-compare TRMM Precipitation Products T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369229829; 6215466 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Liu, Zhong AU - Ostrenga, D AU - Teng, W AU - Kempler, S Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Precipitation KW - Internet UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369229829?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Online+Tools+to+Inter-compare+TRMM+Precipitation+Products&rft.au=Liu%2C+Zhong%3BOstrenga%2C+D%3BTeng%2C+W%3BKempler%2C+S&rft.aulast=Liu&rft.aufirst=Zhong&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Use of MODIS Satellite Data to Evaluate Juniperus spp. Pollen Phenology to Support a Pollen Dispersal Model, PREAM, to Support Public Health Allergy Alerts T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369229658; 6215616 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Luvall, Jeffrey AU - Sprigg, W AU - Levetin, E AU - Huete, A AU - Nickovic, S AU - Prasad, A AU - Pejanovic, G AU - Vukovic, A AU - Van de Water, P AU - Budge, A AU - Hudspeth, W AU - Krapfl, H AU - Toth, B AU - Zelicoff, A AU - Myers, O AU - Bunderson, L AU - Ponce-Campos, G AU - Crimmins, T AU - Menache, M AU - Vujadinovic, M Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Hypersensitivity KW - Data processing KW - Phenology KW - Remote sensing KW - Dispersal KW - Satellites KW - Pollen KW - Models KW - Public health KW - Juniperus UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369229658?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Use+of+MODIS+Satellite+Data+to+Evaluate+Juniperus+spp.+Pollen+Phenology+to+Support+a+Pollen+Dispersal+Model%2C+PREAM%2C+to+Support+Public+Health+Allergy+Alerts&rft.au=Luvall%2C+Jeffrey%3BSprigg%2C+W%3BLevetin%2C+E%3BHuete%2C+A%3BNickovic%2C+S%3BPrasad%2C+A%3BPejanovic%2C+G%3BVukovic%2C+A%3BVan+de+Water%2C+P%3BBudge%2C+A%3BHudspeth%2C+W%3BKrapfl%2C+H%3BToth%2C+B%3BZelicoff%2C+A%3BMyers%2C+O%3BBunderson%2C+L%3BPonce-Campos%2C+G%3BCrimmins%2C+T%3BMenache%2C+M%3BVujadinovic%2C+M&rft.aulast=Luvall&rft.aufirst=Jeffrey&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Newly Released Version 7 TRMM Multi-satellite Precipitation Analysis (TMPA) Products and Data Services at NASA GES DISC T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369229632; 6215468 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Ostrenga, Dana AU - Liu, Z AU - Teng, W AU - Kempler, S Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Data processing KW - Precipitation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369229632?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Newly+Released+Version+7+TRMM+Multi-satellite+Precipitation+Analysis+%28TMPA%29+Products+and+Data+Services+at+NASA+GES+DISC&rft.au=Ostrenga%2C+Dana%3BLiu%2C+Z%3BTeng%2C+W%3BKempler%2C+S&rft.aulast=Ostrenga&rft.aufirst=Dana&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Online Access, Visualization and Analysis of TRMM Composite Climatology Products T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369229623; 6215467 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Liu, Zhong AU - Ostrenga, D AU - Teng, W AU - Kempler, S Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Composite materials KW - Climatology KW - Internet UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369229623?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Online+Access%2C+Visualization+and+Analysis+of+TRMM+Composite+Climatology+Products&rft.au=Liu%2C+Zhong%3BOstrenga%2C+D%3BTeng%2C+W%3BKempler%2C+S&rft.aulast=Liu&rft.aufirst=Zhong&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - NASA Earth Observations for Health and Air Quality Applications T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369229614; 6215613 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Haynes, John AU - Estes, S Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Air quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369229614?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=NASA+Earth+Observations+for+Health+and+Air+Quality+Applications&rft.au=Haynes%2C+John%3BEstes%2C+S&rft.aulast=Haynes&rft.aufirst=John&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Using Satellite Imagery and New Software to Enhance Inquiry and Understanding through NASA's CERES S'COOL Project T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369229533; 6216170 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Crecelius, Sarah AU - Chambers, L AU - Rogerson, T AU - Coleman, T AU - Lewis, P Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Computer programs KW - Satellite sensing KW - Remote sensing UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369229533?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Using+Satellite+Imagery+and+New+Software+to+Enhance+Inquiry+and+Understanding+through+NASA%27s+CERES+S%27COOL+Project&rft.au=Crecelius%2C+Sarah%3BChambers%2C+L%3BRogerson%2C+T%3BColeman%2C+T%3BLewis%2C+P&rft.aulast=Crecelius&rft.aufirst=Sarah&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - SST Analysis in GEOS GCM T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369229501; 6215750 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Akella, Santha AU - Todling, R AU - Suarez, M AU - Rienecker, M Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Meteorology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369229501?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aabiglobal&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=Wall+Street+Journal&rft.atitle=Climate+of+Opinion&rft.au=&rft.aulast=&rft.aufirst=&rft.date=2007-02-05&rft.volume=&rft.issue=&rft.spage=A.16&rft.isbn=&rft.btitle=&rft.title=Wall+Street+Journal&rft.issn=00999660&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Ocean data assimilation of remotely sensed observations in the GEOS-5 coupled system T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369229486; 6215749 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Vernieres, Guillaume AU - Keppenne, C AU - Borovikov, A AU - Kovach, R AU - Rieneker, M Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Data collection KW - Data processing KW - Oceans UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369229486?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Ocean+data+assimilation+of+remotely+sensed+observations+in+the+GEOS-5+coupled+system&rft.au=Vernieres%2C+Guillaume%3BKeppenne%2C+C%3BBorovikov%2C+A%3BKovach%2C+R%3BRieneker%2C+M&rft.aulast=Vernieres&rft.aufirst=Guillaume&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Predictions of Solar Cycle 24, How are We Doing? T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369229439; 6215171 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Pesnell, W Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Prediction KW - solar cycle UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369229439?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Predictions+of+Solar+Cycle+24%2C+How+are+We+Doing%3F&rft.au=Pesnell%2C+W&rft.aulast=Pesnell&rft.aufirst=W&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Engaging Students in Scientific Practices through GLOBE Atmosphere Investigations T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369229395; 6215387 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Taylor, Jessica AU - Crecelius, S AU - Chambers, L Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Atmosphere UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369229395?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Engaging+Students+in+Scientific+Practices+through+GLOBE+Atmosphere+Investigations&rft.au=Taylor%2C+Jessica%3BCrecelius%2C+S%3BChambers%2C+L&rft.aulast=Taylor&rft.aufirst=Jessica&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Tangent Linear and Adjoint Models of the Cubed-Sphere GEOS GCM T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369229353; 6215746 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Kim, Jong AU - Suarez, M AU - Trayanov, A AU - Errico, R AU - Guo, J AU - Todling, R Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Models UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369229353?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Tangent+Linear+and+Adjoint+Models+of+the+Cubed-Sphere+GEOS+GCM&rft.au=Kim%2C+Jong%3BSuarez%2C+M%3BTrayanov%2C+A%3BErrico%2C+R%3BGuo%2C+J%3BTodling%2C+R&rft.aulast=Kim&rft.aufirst=Jong&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - The NASA Orbiting Carbon Observatory -2 T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369229349; 6215149 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Crisp, David Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Carbon UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369229349?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=The+NASA+Orbiting+Carbon+Observatory+-2&rft.au=Crisp%2C+David&rft.aulast=Crisp&rft.aufirst=David&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Evaluation of the Relative Contribution of Observing Systems in Reanalyses: Aircraft Temperature Bias and Analysis Innovations T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369229332; 6215095 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Bosilovich, Michael AU - da Silva Jr, A Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Temperature effects KW - Aircraft KW - Innovations UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369229332?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Evaluation+of+the+Relative+Contribution+of+Observing+Systems+in+Reanalyses%3A+Aircraft+Temperature+Bias+and+Analysis+Innovations&rft.au=Bosilovich%2C+Michael%3Bda+Silva+Jr%2C+A&rft.aulast=Bosilovich&rft.aufirst=Michael&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Approach to Integrate Global-Sun Models of Magnetic Flux Emergence and Transport for Space Weather Studies T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369229323; 6215501 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Mansour, Nagi AU - Wray, A AU - Mehrotra, P AU - Henney, C AU - Arge, N AU - Manchester, C AU - Godinez, H AU - Koller, J AU - Kosovichev, A AU - Scherrer, P AU - Zhao, J AU - Stein, R AU - Duvall, T AU - Fan, Y Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Weather KW - Models UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369229323?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Approach+to+Integrate+Global-Sun+Models+of+Magnetic+Flux+Emergence+and+Transport+for+Space+Weather+Studies&rft.au=Mansour%2C+Nagi%3BWray%2C+A%3BMehrotra%2C+P%3BHenney%2C+C%3BArge%2C+N%3BManchester%2C+C%3BGodinez%2C+H%3BKoller%2C+J%3BKosovichev%2C+A%3BScherrer%2C+P%3BZhao%2C+J%3BStein%2C+R%3BDuvall%2C+T%3BFan%2C+Y&rft.aulast=Mansour&rft.aufirst=Nagi&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Tropospheric Emissions: Monitoring of Pollution (TEMPO) T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369229225; 6215084 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Al-Saadi, Jassim AU - Chance, K AU - Liu, X AU - Suleiman, R AU - Flittner, D AU - Janz, S Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Pollution monitoring KW - Troposphere KW - Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369229225?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Tropospheric+Emissions%3A+Monitoring+of+Pollution+%28TEMPO%29&rft.au=Al-Saadi%2C+Jassim%3BChance%2C+K%3BLiu%2C+X%3BSuleiman%2C+R%3BFlittner%2C+D%3BJanz%2C+S&rft.aulast=Al-Saadi&rft.aufirst=Jassim&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Quantifying the semi-direct effect of smoke aerosol over southern Africa using the NASA GEOS-5 Incremental Analysis Update (IAU) T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369229098; 6215262 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Randles, Cynthia AU - Colarco, P AU - da Silva, A Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Smoke KW - Aerosols KW - Africa UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369229098?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Quantifying+the+semi-direct+effect+of+smoke+aerosol+over+southern+Africa+using+the+NASA+GEOS-5+Incremental+Analysis+Update+%28IAU%29&rft.au=Randles%2C+Cynthia%3BColarco%2C+P%3Bda+Silva%2C+A&rft.aulast=Randles&rft.aufirst=Cynthia&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Challenges for Transitioning Science Research to Space Weather Applications T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369228974; 6215713 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Spann, James Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Weather UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369228974?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Challenges+for+Transitioning+Science+Research+to+Space+Weather+Applications&rft.au=Spann%2C+James&rft.aulast=Spann&rft.aufirst=James&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - Analysis of the New Version 7 TMPA Real Time Retrospectively Processed Precipitation Record T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369228960; 6215132 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Bolvin, David AU - Huffman, G AU - Nelkin, E AU - Adler, R AU - Stocker, E Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Precipitation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369228960?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=Analysis+of+the+New+Version+7+TMPA+Real+Time+Retrospectively+Processed+Precipitation+Record&rft.au=Bolvin%2C+David%3BHuffman%2C+G%3BNelkin%2C+E%3BAdler%2C+R%3BStocker%2C+E&rft.aulast=Bolvin&rft.aufirst=David&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER - TY - CPAPER T1 - The Impact of Soil Moisture and Snow Assimilation on NLDAS Drought Metrics T2 - 93rd American Meteorological Society Annual Meeting (AMS 2013) AN - 1369228919; 6215189 JF - 93rd American Meteorological Society Annual Meeting (AMS 2013) AU - Peters-Lidard, Christa AU - Mocko, D AU - Kumar, S AU - Tian, Y AU - Xia, Y AU - Ek, M. Y1 - 2013/01/06/ PY - 2013 DA - 2013 Jan 06 KW - Snow KW - Soil moisture KW - Droughts UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1369228919?accountid=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=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.atitle=The+Impact+of+Soil+Moisture+and+Snow+Assimilation+on+NLDAS+Drought+Metrics&rft.au=Peters-Lidard%2C+Christa%3BMocko%2C+D%3BKumar%2C+S%3BTian%2C+Y%3BXia%2C+Y%3BEk%2C+M.&rft.aulast=Peters-Lidard&rft.aufirst=Christa&rft.date=2013-01-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=93rd+American+Meteorological+Society+Annual+Meeting+%28AMS+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/93Annual/webprogram/meeting.html# LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-05-31 N1 - Last updated - 2013-06-19 ER -