TY - NEWS T1 - NASA Taking Stock of Phytoplankton Populations in the Pacific AN - 1865697687 JF - UPI Space Daily AU - Samson Reiny for NASA's Earth Science News Y1 - 2017/02/08/ PY - 2017 DA - 2017 Feb 08 CY - Washington KW - Aeronautics And Space Flight KW - Research KW - Color KW - Plankton KW - Researchers KW - Satellites KW - Studies KW - Salinity KW - Carbon dioxide KW - Oregon KW - Hawaii KW - Maryland UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1865697687?accountid=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+Taking+Stock+of+Phytoplankton+Populations+in+the+Pacific&rft.au=Samson+Reiny+for+NASA%27s+Earth+Science+News&rft.aulast=Samson+Reiny+for+NASA%27s+Earth+Science+News&rft.aufirst=&rft.date=2017-02-08&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 - Name - National Aeronautics & Space Administration--NASA N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2017-02-08 ER - TY - JOUR T1 - Assessing the effect of long-range pollutant transportation on air quality in Seoul using the conditional potential source contribution function method AN - 1859482568; PQ0003993422 AB - It is important to estimate the effects of the long-range transport of atmospheric pollutants for efficient and effective strategies to control air quality. In this study, the contributions of trans-boundary transport to the mean concentrations of SO2, NO2, CO, and PM10 in Seoul, Korea from 2001 to 2014 were estimated based on the conditional potential source contribution function (CPSCF) method. Eastern China was found to be the major source of trans-boundary pollution in Seoul, but moderate sources were also located in northeastern China. The contribution of long-range transport from Japan was negligible. The spatial distributions of the potential source contribution function (PSCF) values of each pollutant showed reasonable consistency with their emission inventory and satellite products. The PSCF values of SO2 and PM10 from eastern China were higher than those of NO2 and CO. The mean concentrations of SO2, NO2, CO, and PM10 in Seoul for the period from 2001 to 2014 were 5.34, 37.0, and 619.1 ppb, and 57.4 4 mu g/m3, respectively. The contributions of long-range transport to the mean concentrations of SO2, NO2, CO, and PM10 in Seoul were 0.74, 3.4, and 39.0 ppb, and 12.1 mu g/m3, respectively, which are 14%, 9%, 6%, and 21% of the mean concentrations, respectively. The annual mean concentrations of SO2 and NO2 followed statistically significant increasing linear trends (0.5 and 1.6 ppb per decade, respectively), whereas the trends in the annual mean concentrations of CO and PM10 were statistically insignificant. The trends in the ratio of the increased concentrations associated with long-range transport to the annual mean concentrations of the pollutants were statistically insignificant. However, the results indicate that the trans-boundary transport of SO2, NO2, CO, and PM10 from eastern China consistently affected air quality in Seoul over the study period (2001-2014). Regionally, the effects of the long-range transport of pollutants from Beijing and Harbin-Changchun on air quality in Seoul have become more significant over this period. JF - Atmospheric Environment AU - Jeong, Ukkyo AU - Kim, Jhoon AU - Lee, Hanlim AU - Lee, Yun Gon AD - Goddard Space Flight Center, National Aeronautics and Space Administration, Greenbelt, MD, USA Y1 - 2017/02// PY - 2017 DA - February 2017 SP - 33 EP - 44 PB - Elsevier B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 150 SN - 1352-2310, 1352-2310 KW - Meteorological & Geoastrophysical Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Environment Abstracts; Oceanic Abstracts; Water Resources Abstracts KW - Long-range transport KW - PM10 KW - SO2 KW - CO KW - NO2 KW - Potential source contribution function UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859482568?accountid=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=Atmospheric+Environment&rft.atitle=Assessing+the+effect+of+long-range+pollutant+transportation+on+air+quality+in+Seoul+using+the+conditional+potential+source+contribution+function+method&rft.au=Jeong%2C+Ukkyo%3BKim%2C+Jhoon%3BLee%2C+Hanlim%3BLee%2C+Yun+Gon&rft.aulast=Jeong&rft.aufirst=Ukkyo&rft.date=2017-02-01&rft.volume=150&rft.issue=&rft.spage=33&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Environment&rft.issn=13522310&rft_id=info:doi/10.1016%2Fj.atmosenv.2016.11.017 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2017-01-01 N1 - Last updated - 2017-01-18 DO - http://dx.doi.org/10.1016/j.atmosenv.2016.11.017 ER - TY - NEWS T1 - NASA Airborne Mission Chases Air Pollution Through the Seasons AN - 1862951102 JF - UPI Space Daily AU - Ellen Gray for NASA Earth Science News Y1 - 2017/01/31/ PY - 2017 DA - 2017 Jan 31 CY - Washington KW - Aeronautics And Space Flight KW - Scientists KW - Ozone KW - Science KW - Atmosphere KW - Earth KW - Air pollution KW - Arctic region KW - Europe KW - United States--US KW - Southern Hemisphere KW - California KW - Canada KW - Massachusetts KW - Pacific Ocean KW - Northern Hemisphere KW - Alaska KW - Russia KW - New Zealand UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1862951102?accountid=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+Airborne+Mission+Chases+Air+Pollution+Through+the+Seasons&rft.au=Ellen+Gray+for+NASA+Earth+Science+News&rft.aulast=Ellen+Gray+for+NASA+Earth+Science+News&rft.aufirst=&rft.date=2017-01-31&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 - Name - Harvard University; National Aeronautics & Space Administration--NASA N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2017-01-31 ER - TY - NEWS T1 - How satellite data changed chimpanzee conservation efforts AN - 1862947108 JF - UPI Space Daily AU - Ellen Gray for NASA Earth Science News Y1 - 2017/01/31/ PY - 2017 DA - 2017 Jan 31 CY - Washington KW - Aeronautics And Space Flight KW - Open data KW - Scientists KW - Remote sensing KW - Watersheds KW - Forests KW - Habitats KW - National parks KW - Land use KW - Landsat satellites KW - Lake Tanganyika KW - Tanzania KW - Virginia KW - Congo Basin KW - Africa KW - Uganda KW - United States--US KW - Goodall, Jane UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1862947108?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apqrl&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=UPI+Space+Daily&rft.atitle=How+satellite+data+changed+chimpanzee+conservation+efforts&rft.au=Ellen+Gray+for+NASA+Earth+Science+News&rft.aulast=Ellen+Gray+for+NASA+Earth+Science+News&rft.aufirst=&rft.date=2017-01-31&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 - Name - National Aeronautics & Space Administration--NASA; US Geological Survey; Jane Goodall Institute N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - People - Goodall, Jane N1 - Last updated - 2017-01-31 ER - TY - NEWS T1 - NASA Study Finds a Connection Between Wildfires and Drought AN - 1858549428 JF - UPI Space Daily AU - Samson Reiny for NASA Earth News Y1 - 2017/01/15/ PY - 2017 DA - 2017 Jan 15 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1858549428?accountid=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+Study+Finds+a+Connection+Between+Wildfires+and+Drought&rft.au=Samson+Reiny+for+NASA+Earth+News&rft.aulast=Samson+Reiny+for+NASA+Earth+News&rft.aufirst=&rft.date=2017-01-15&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 - 2017-01-15 ER - TY - NEWS T1 - NASA research is key to future of air transportation AN - 1858549397 JF - UPI Space Daily AU - Jim Banke for NASA Aeronautics News Y1 - 2017/01/15/ PY - 2017 DA - 2017 Jan 15 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1858549397?accountid=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+research+is+key+to+future+of+air+transportation&rft.au=Jim+Banke+for+NASA+Aeronautics+News&rft.aulast=Jim+Banke+for+NASA+Aeronautics+News&rft.aufirst=&rft.date=2017-01-15&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 - 2017-01-15 ER - TY - JOUR T1 - Sub-ice-shelf sediments record history of twentieth-century retreat of Pine Island Glacier AN - 1863566553; 2017-008903 JF - Nature (London) AU - Smith, J A AU - Andersen, T J AU - Shortt, M AU - Gaffney, A M AU - Stanton, T P AU - Bindschadler, R AU - Dutrieux, P AU - Jenkins, A AU - Hillenbrand, C D AU - Ehrmann, W AU - Corr, Hugh F J AU - Farley, N AU - Crowhurst, S AU - Vaughan, D G Y1 - 2017/01/05/ PY - 2017 DA - 2017 Jan 05 SP - 77 EP - 80 PB - Macmillan Journals, London VL - 541 IS - 7635 SN - 0028-0836, 0028-0836 KW - subglacial environment KW - Quaternary KW - glaciers KW - global change KW - Holocene KW - cores KW - Cenozoic KW - Antarctic ice sheet KW - sea-level changes KW - transgression KW - Antarctica KW - mass balance KW - West Antarctic ice sheet KW - sediments KW - thickness KW - reconstruction KW - Amundsen Sea KW - upper Holocene KW - Pine Island Glacier KW - global warming KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1863566553?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Sub-ice-shelf+sediments+record+history+of+twentieth-century+retreat+of+Pine+Island+Glacier&rft.au=Smith%2C+J+A%3BAndersen%2C+T+J%3BShortt%2C+M%3BGaffney%2C+A+M%3BStanton%2C+T+P%3BBindschadler%2C+R%3BDutrieux%2C+P%3BJenkins%2C+A%3BHillenbrand%2C+C+D%3BEhrmann%2C+W%3BCorr%2C+Hugh+F+J%3BFarley%2C+N%3BCrowhurst%2C+S%3BVaughan%2C+D+G&rft.aulast=Smith&rft.aufirst=J&rft.date=2017-01-05&rft.volume=541&rft.issue=7635&rft.spage=77&rft.isbn=&rft.btitle=&rft.title=Nature+%28London%29&rft.issn=00280836&rft_id=info:doi/10.1038%2Fnature20136 L2 - http://www.nature.com/nature/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 30 N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2017-02-02 N1 - CODEN - NATUAS N1 - SubjectsTermNotLitGenreText - Amundsen Sea; Antarctic ice sheet; Antarctica; Cenozoic; cores; glaciers; global change; global warming; Holocene; mass balance; Pine Island Glacier; Quaternary; reconstruction; sea-level changes; sediments; subglacial environment; thickness; transgression; upper Holocene; West Antarctic ice sheet DO - http://dx.doi.org/10.1038/nature20136 ER - TY - JOUR T1 - Implications of different digital elevation models and preprocessing techniques to delineate debris flow inundation hazard zones in El Salvador AN - 1861114073; 787476-11 JF - Geophysical Monograph AU - Anderson, Eric Ross AU - Griffin, Robert E AU - Irwin, Daniel E Y1 - 2017 PY - 2017 DA - 2017 SP - 167 EP - 177 PB - Wiley for American Geophysical Union, Washington, DC VL - 223 SN - 0065-8448, 0065-8448 KW - imagery KW - geologic hazards KW - spatial data KW - ArcGIS KW - digital terrain models KW - debris flows KW - topographic correction KW - simulation KW - spatial distribution KW - geographic information systems KW - errors KW - Earth Observing System KW - El Salvador KW - mass movements KW - San Vicente KW - ASTER instrument KW - zoning KW - uncertainty KW - LAHARZ KW - cartography KW - lahars KW - equations KW - ArcInfo KW - pixels KW - satellite methods KW - SRTM KW - natural hazards KW - volcanoes KW - risk assessment KW - information systems KW - Central America KW - accuracy KW - data preprocessing KW - remote sensing KW - 24:Quaternary geology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1861114073?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Monograph&rft.atitle=Implications+of+different+digital+elevation+models+and+preprocessing+techniques+to+delineate+debris+flow+inundation+hazard+zones+in+El+Salvador&rft.au=Anderson%2C+Eric+Ross%3BGriffin%2C+Robert+E%3BIrwin%2C+Daniel+E&rft.aulast=Anderson&rft.aufirst=Eric&rft.date=2017-01-01&rft.volume=223&rft.issue=&rft.spage=167&rft.isbn=9781119027867&rft.btitle=&rft.title=Geophysical+Monograph&rft.issn=00658448&rft_id=info:doi/ L2 - http://agupubs.onlinelibrary.wiley.com/agu/books/geophysical-monograph-series.html LA - English DB - GeoRef N1 - Conference title - 2013 American Geophysical Union (AGU) fall meeting session N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 69 N1 - PubXState - DC N1 - Document feature - illus. incl. 7 tables N1 - Last updated - 2017-01-24 N1 - CODEN - GPMGAD N1 - SubjectsTermNotLitGenreText - accuracy; ArcGIS; ArcInfo; ASTER instrument; cartography; Central America; data preprocessing; debris flows; digital terrain models; Earth Observing System; El Salvador; equations; errors; geographic information systems; geologic hazards; imagery; information systems; lahars; LAHARZ; mass movements; natural hazards; pixels; remote sensing; risk assessment; San Vicente; satellite methods; simulation; spatial data; spatial distribution; SRTM; topographic correction; uncertainty; volcanoes; zoning ER - TY - JOUR T1 - Stratospheric balloon observations of comets C/2013 A1 (Siding Spring), C/2014 E2 (Jacques), and Ceres AN - 1861081054; 783948-31 AB - The Balloon Observation Platform for Planetary Science (BOPPS) was launched from Fort Sumner, New Mexico on September 26, 2014 and observed Oort Cloud comets from a stratospheric balloon observatory, using a 0.8 meter aperture telescope, a pointing system that achieved < 1 arc second pointing stability, and an imaging instrument suite covering the near-ultraviolet to mid-infrared. BOPPS observed two Oort Cloud comets, C/2013 A1 (Siding Spring) and C/2014 E2 (Jacques), at the 2.7 mu m wavelength of water emission. BOPPS also observed Ceres at 2.7 mu m wavelength to characterize the nature of hydrated materials on Ceres. Absolute flux calibrations were made using observations of A0V stars at nearly the same elevations as each target. The Comet Siding Spring brightness in R-band was magnitude R = 10.8 in a photometric aperture of 17.4". The inferred H (sub 2) O production rate from Comet Siding Spring was 6 X 10 (super 27) s (super -1) , assuming optically thin emissions, which may be a lower limit if optical depth effects are important. A superheat dust population was discovered at Comet Jacques, producing a bright infrared continuum without evidence for line emission. Observations of Ceres from BOPPS and from IRTF, obtained the same night, did not find evidence for a strong water vapor emission near 2.7 mu m and led to an approximate upper limit < 7 X 10 (super 27) s (super -1) for water emission from Ceres. JF - Icarus AU - Cheng, Andrew F AU - Hibbitts, C A AU - Espiritu, R AU - McMichael, R AU - Fletcher, Z AU - Bernasconi, P AU - Adams, J D AU - Lisse, C M AU - Sitko, M L AU - Fernandes, R AU - Young, E F AU - Kremic, T Y1 - 2017/01/01/ PY - 2017 DA - 2017 Jan 01 SP - 404 EP - 416 PB - Elsevier, New York, NY VL - 281 SN - 0019-1035, 0019-1035 KW - Siding Spring Comet KW - hydrates KW - Oort Cloud KW - imagery KW - Jacques Comet KW - Ceres KW - asteroids KW - telescope methods KW - water vapor KW - calibration KW - Balloon Observation Platform for Planetary Science KW - dwarf planets KW - infrared spectra KW - brightness KW - photometry KW - comets KW - stratosphere KW - spectra KW - BOPPS mission KW - balloon observations KW - optical depth KW - cometary dust KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1861081054?accountid=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=Icarus&rft.atitle=Stratospheric+balloon+observations+of+comets+C%2F2013+A1+%28Siding+Spring%29%2C+C%2F2014+E2+%28Jacques%29%2C+and+Ceres&rft.au=Cheng%2C+Andrew+F%3BHibbitts%2C+C+A%3BEspiritu%2C+R%3BMcMichael%2C+R%3BFletcher%2C+Z%3BBernasconi%2C+P%3BAdams%2C+J+D%3BLisse%2C+C+M%3BSitko%2C+M+L%3BFernandes%2C+R%3BYoung%2C+E+F%3BKremic%2C+T&rft.aulast=Cheng&rft.aufirst=Andrew&rft.date=2017-01-01&rft.volume=281&rft.issue=&rft.spage=404&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.08.007 L2 - http://www.sciencedirect.com/science/journal/00191035 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 CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Number of references - 34 N1 - PubXState - NY N1 - Document feature - illus. incl. 6 tables N1 - Last updated - 2017-01-24 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - asteroids; Balloon Observation Platform for Planetary Science; balloon observations; BOPPS mission; brightness; calibration; Ceres; cometary dust; comets; dwarf planets; hydrates; imagery; infrared spectra; instruments; Jacques Comet; Oort Cloud; optical depth; photometry; Siding Spring Comet; spectra; stratosphere; telescope methods; water vapor DO - http://dx.doi.org/10.1016/j.icarus.2016.08.007 ER - TY - JOUR T1 - Terrestrial analogues for lunar impact melt flows AN - 1859792395; 2017-004587 AB - Lunar impact melt deposits have unique physical properties. They have among the highest observed radar returns at S-Band (12.6 cm wavelength), implying that they are rough at the decimeter scale. However, they are also observed in high-resolution optical imagery to be quite smooth at the meter scale. These characteristics distinguish them from well-studied terrestrial analogues, such as Hawaiian pahoehoe and 'a'a lava flows. The morphology of impact melt deposits can be related to their emplacement conditions, so understanding the origin of these unique surface properties will help to inform us as to the circumstances under which they were formed. In this work, we seek to find a terrestrial analogue for well-preserved lunar impact melt flows by examining fresh lava flows on Earth. We compare the radar return and high-resolution topographic variations of impact melt flows to terrestrial lava flows with a range of surface textures. The lava flows examined in this work range from smooth Hawaiian pahoehoe to transitional basaltic flows at Craters of the Moon (COTM) National Monument and Preserve in Idaho to rubbly and spiny pahoehoe-like flows at the recent eruption at Holuhraun in Iceland. The physical properties of lunar impact melt flows appear to differ from those of all the terrestrial lava flows studied in this work. This may be due to (a) differences in post-emplacement modification processes or (b) fundamental differences in the surface texture of the melt flows due to the melts' unique emplacement and/or cooling environment. Information about the surface properties of lunar impact melt deposits will be critical for future landed missions that wish to sample these materials. JF - Icarus AU - Neish, C D AU - Hamilton, C W AU - Hughes, S S AU - Nawotniak, S Kobs AU - Garry, W B AU - Skok, J R AU - Elphic, R C AU - Schaefer, E AU - Carter, L M AU - Bandfield, J L AU - Osinski, G R AU - Lim, D AU - Heldmann, J L Y1 - 2017/01/01/ PY - 2017 DA - 2017 Jan 01 SP - 73 EP - 89 PB - Elsevier, New York, NY VL - 281 SN - 0019-1035, 0019-1035 KW - United States KW - imagery KW - Hawaii Island KW - Lunar Reconnaissance Orbiter KW - Europe KW - digital terrain models KW - melts KW - impact melts KW - volcanism KW - pahoehoe KW - basalt flows KW - Kilauea KW - surface properties KW - Idaho KW - Western Europe KW - lava flows KW - Moon KW - Hawaii County Hawaii KW - roughness KW - Mauna Ulu KW - Holuhraun KW - surface textures KW - radar methods KW - Hawaii KW - East Pacific Ocean Islands KW - impacts KW - morphology KW - Craters of the Moon KW - physical properties KW - lava KW - natural analogs KW - Oceania KW - terrestrial comparison KW - Polynesia KW - aa lava KW - Iceland KW - 23:Geomorphology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859792395?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Terrestrial+analogues+for+lunar+impact+melt+flows&rft.au=Neish%2C+C+D%3BHamilton%2C+C+W%3BHughes%2C+S+S%3BNawotniak%2C+S+Kobs%3BGarry%2C+W+B%3BSkok%2C+J+R%3BElphic%2C+R+C%3BSchaefer%2C+E%3BCarter%2C+L+M%3BBandfield%2C+J+L%3BOsinski%2C+G+R%3BLim%2C+D%3BHeldmann%2C+J+L&rft.aulast=Neish&rft.aufirst=C&rft.date=2017-01-01&rft.volume=281&rft.issue=&rft.spage=73&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.08.008 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2017-01-01 N1 - Number of references - 73 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2017-01-19 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - aa lava; basalt flows; Craters of the Moon; digital terrain models; East Pacific Ocean Islands; Europe; Hawaii; Hawaii County Hawaii; Hawaii Island; Holuhraun; Iceland; Idaho; imagery; impact melts; impacts; Kilauea; lava; lava flows; Lunar Reconnaissance Orbiter; Mauna Ulu; melts; Moon; morphology; natural analogs; Oceania; pahoehoe; physical properties; Polynesia; radar methods; roughness; surface properties; surface textures; terrestrial comparison; United States; volcanism; Western Europe DO - http://dx.doi.org/10.1016/j.icarus.2016.08.008 ER - TY - JOUR T1 - Cassini microwave observations provide clues to the origin of Saturn's C ring AN - 1859792267; 2017-004602 AB - Despite considerable study, Saturn's rings continue to challenge current theories for their provenance. Water ice comprises the bulk of Saturn's rings, yet it is the small fraction of non-icy material that is arguably more valuable in revealing clues about the system's origin and age. Herein, we present new measurements of the non-icy material fraction in Saturn's C ring, determined from microwave radiometry observations acquired by the Cassini spacecraft. Our observations show an exceptionally high brightness at near-zero azimuthal angles, suggesting a high porosity of 70-75% for the C ring particles. Furthermore, our results show that most regions in the C ring contain about 1-2% silicates. These results are consistent with an initially nearly pure-ice ring system that has been continuously contaminated by in-falling micrometeoroids over approximately 15-90 million years, using the currently accepted value of the micrometeoroid flux at infinity of approximately 4.5 X 10 (super -17) g cm (super -2) s (super -1) , and assuming that the C ring optical depth and surface density has not changed significantly during that time. This absolute time scale is inversely proportional not only to the flux at infinity, but also to the amount of gravitational focusing by Saturn the micrometeoroids experience before encountering the rings. We also find an enhanced abundance of non-icy material concentrated in the middle C ring. When assumed to be mixed volumetrically ("intramixed") with water ice, this enhanced contamination reaches a maximum concentration of 6-11% silicates by volume around a ring radius of 83,000 km, depending on the volume mixing model used. This is significantly higher than the inner and outer C ring. As opposed to an intramixing model, we also consider a silicate-core, icy-mantle model to address the fact that silicates may be present in chunks instead of fine powder in the ring particles. Such a model naturally helps to account for the observed opacity distribution. We propose several models to explain the radially varied non-icy material contamination. Our preferred model is that the C ring has been continuously polluted by meteoroid bombardment since it first formed, while the middle C ring was further contaminated by an incoming Centaur, a rocky object torn apart by tides and ultimately broken into pieces that currently reside in the middle C ring. If correct, the spatial extent of the enhanced non-icy material fraction suggests that the Centaur was likely to be captured and integrated into the rings perhaps as recently as approximately 10-20 million years ago. JF - Icarus AU - Zhang, Z AU - Hayes, A G AU - Janssen, M A AU - Nicholson, P D AU - Cuzzi, J N AU - de Pater, Imke AU - Dunn, D E AU - Estrada, P R AU - Hedman, M M Y1 - 2017/01/01/ PY - 2017 DA - 2017 Jan 01 SP - 297 EP - 321 PB - Elsevier, New York, NY VL - 281 SN - 0019-1035, 0019-1035 KW - silicates KW - radar methods KW - mantle KW - porous materials KW - meteoroids KW - porosity KW - C ring KW - giant planets KW - models KW - microwave methods KW - brightness KW - Saturn KW - planets KW - planetary rings KW - Cassini-Huygens Mission KW - micrometeoroids KW - ice KW - core KW - outer planets KW - optical depth KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859792267?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Cassini+microwave+observations+provide+clues+to+the+origin+of+Saturn%27s+C+ring&rft.au=Zhang%2C+Z%3BHayes%2C+A+G%3BJanssen%2C+M+A%3BNicholson%2C+P+D%3BCuzzi%2C+J+N%3Bde+Pater%2C+Imke%3BDunn%2C+D+E%3BEstrada%2C+P+R%3BHedman%2C+M+M&rft.aulast=Zhang&rft.aufirst=Z&rft.date=2017-01-01&rft.volume=281&rft.issue=&rft.spage=297&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.07.020 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2017-01-01 N1 - Number of references - 92 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2017-01-19 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - brightness; C ring; Cassini-Huygens Mission; core; giant planets; ice; mantle; meteoroids; micrometeoroids; microwave methods; models; optical depth; outer planets; planetary rings; planets; porosity; porous materials; radar methods; Saturn; silicates DO - http://dx.doi.org/10.1016/j.icarus.2016.07.020 ER - TY - JOUR T1 - Environmental temperature effect on the far-infrared absorption features of aromatic-based Titan's aerosol analogs AN - 1859792261; 2017-004605 AB - Benzene detection has been reported in Titan's atmosphere both in the stratosphere at ppb levels by remote sensing (Coustenis et al., 2007; Vinatier et al., 2007) and in the thermosphere at ppm levels by the Cassini's Ion and Neutral Mass Spectrometer (Waite et al., 2007). This detection supports the idea that aromatic and heteroaromatic reaction pathways may play an important role in Titan's atmospheric chemistry, especially in the formation of aerosols. Indeed, aromatic molecules are easily dissociated by ultraviolet radiation and can therefore contribute significantly to aerosol formation. It has been shown recently that aerosol analogs produced from a gas mixture containing a low concentration of aromatic and/or heteroaromatic molecules (benzene, naphthalene, pyridine, quinoline and isoquinoline) have spectral signatures below 500 cm (super -1) , a first step towards reproducing the aerosol spectral features observed by Cassini's Composite InfraRed Spectrometer (CIRS) in the far infrared (Anderson and Samuelson 2011, and references therein). In this work we investigate the influence of environmental temperature on the absorption spectra of such aerosol samples, simulating the temperature range to which aerosols, once formed, are exposed during their transport through Titan's stratosphere. Our results show that environmental temperature does not have any major effect on the spectral shape of these aerosol analogs in the far-infrared, which is consistent with the CIRS observations. JF - Icarus AU - Gautier, Thomas AU - Trainer, Melissa G AU - Loeffler, Mark J AU - Sebree, Joshua A AU - Anderson, Carrie M Y1 - 2017/01/01/ PY - 2017 DA - 2017 Jan 01 SP - 338 EP - 341 PB - Elsevier, New York, NY VL - 281 SN - 0019-1035, 0019-1035 KW - tholins KW - icy satellites KW - dissociation KW - photochemistry KW - atmosphere KW - benzene KW - temperature KW - infrared spectra KW - absorption KW - organic compounds KW - far-infrared spectra KW - stratosphere KW - natural analogs KW - hydrocarbons KW - Titan Satellite KW - aerosols KW - spectra KW - satellites KW - aromatic hydrocarbons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859792261?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Environmental+temperature+effect+on+the+far-infrared+absorption+features+of+aromatic-based+Titan%27s+aerosol+analogs&rft.au=Gautier%2C+Thomas%3BTrainer%2C+Melissa+G%3BLoeffler%2C+Mark+J%3BSebree%2C+Joshua+A%3BAnderson%2C+Carrie+M&rft.aulast=Gautier&rft.aufirst=Thomas&rft.date=2017-01-01&rft.volume=281&rft.issue=&rft.spage=338&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.07.015 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2017-01-01 N1 - Number of references - 27 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2017-01-19 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - absorption; aerosols; aromatic hydrocarbons; atmosphere; benzene; dissociation; far-infrared spectra; hydrocarbons; icy satellites; infrared spectra; natural analogs; organic compounds; photochemistry; satellites; spectra; stratosphere; temperature; tholins; Titan Satellite DO - http://dx.doi.org/10.1016/j.icarus.2016.07.015 ER - TY - JOUR T1 - Seasonal variations of Mercury's magnesium dayside exosphere from MESSENGER observations AN - 1859792091; 2017-004586 AB - The Ultraviolet and Visible Spectrometer channel of the Mercury Atmospheric and Surface Composition Spectrometer instrument aboard the MErcury Surface, Space ENvironment, GEochemistry, and Ranging spacecraft made near-daily observations of solar-scattered resonant emission from magnesium in Mercury's exosphere during the mission's orbital phase (March 2011-April 2015, approximately 17 Mercury years). In this paper, a subset of these data (March 2013-April 2015) is described and analyzed to illustrate Mg's spatial and temporal variations. Dayside altitude profiles of emission are used to make estimates of the Mg density and temperature. The main characteristics of the Mg exosphere are (a) a predominant enhancement of emission in the morning (6 am-10 am) near perihelion, (b) a bulk temperature of approximately 6000 K, consistent with impact vaporization as the predominant ejection process, (c) a near-surface density that varies from 5 cm (super -3) to 50 cm (super -3) and (d) a production rate that is strongest in the morning on the inbound leg of Mercury's orbit with rates ranging from 1 X 10 (super 5) cm (super -2) s (super -1) to 8 X 10 (super 5) cm (super -2) s (super -1) . JF - Icarus AU - Merkel, Aimee W AU - Cassidy, Timothy A AU - Vervack, Ronald J, Jr AU - McClintock, William E AU - Sarantos, Menelaos AU - Burger, Matthew H AU - Killen, Rosemary M Y1 - 2017/01/01/ PY - 2017 DA - 2017 Jan 01 SP - 46 EP - 54 PB - Elsevier, New York, NY VL - 281 SN - 0019-1035, 0019-1035 KW - alkaline earth metals KW - magnesium KW - Mercury Atmospheric and Surface Composition Spectrometer KW - impacts KW - temperature KW - exosphere KW - terrestrial planets KW - brightness KW - volatilization KW - spatial distribution KW - planets KW - metals KW - Mercury Planet KW - ultraviolet spectra KW - temporal distribution KW - spectra KW - seasonal variations KW - orbital observations KW - diurnal variations KW - MESSENGER Mission KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859792091?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+variations+of+Mercury%27s+magnesium+dayside+exosphere+from+MESSENGER+observations&rft.au=Merkel%2C+Aimee+W%3BCassidy%2C+Timothy+A%3BVervack%2C+Ronald+J%2C+Jr%3BMcClintock%2C+William+E%3BSarantos%2C+Menelaos%3BBurger%2C+Matthew+H%3BKillen%2C+Rosemary+M&rft.aulast=Merkel&rft.aufirst=Aimee&rft.date=2017-01-01&rft.volume=281&rft.issue=&rft.spage=46&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.08.032 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2017-01-01 N1 - Number of references - 29 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2017-01-19 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - alkaline earth metals; brightness; diurnal variations; exosphere; impacts; magnesium; Mercury Atmospheric and Surface Composition Spectrometer; Mercury Planet; MESSENGER Mission; metals; orbital observations; planets; seasonal variations; spatial distribution; spectra; temperature; temporal distribution; terrestrial planets; ultraviolet spectra; volatilization DO - http://dx.doi.org/10.1016/j.icarus.2016.08.032 ER - TY - JOUR T1 - Chemistry of diagenetic features analyzed by ChemCam at Pahrump Hills, Gale Crater, Mars AN - 1859792066; 2017-004591 AB - The Curiosity rover's campaign at Pahrump Hills provides the first analyses of lower Mount Sharp strata. Here we report ChemCam elemental composition of a diverse assemblage of post-depositional features embedded in, or cross-cutting, the host rock. ChemCam results demonstrate their compositional diversity, especially compared to the surrounding host rock: (i) Dendritic aggregates and relief enhanced features, characterized by a magnesium enhancement and sulfur detection, and interpreted as Mg-sulfates; (ii) A localized observation that displays iron enrichment associated with sulfur, interpreted as Fe-sulfate; (iii) Dark raised ridges with varying Mg- and Ca-enriched compositions compared to host rock; (iv) Several dark-toned veins with calcium enhancement associated with fluorine detection, interpreted as fluorite veins. (v) Light-toned veins with enhanced calcium associated with sulfur detection, and interpreted as Ca-sulfates. The diversity of the Pahrump Hills diagenetic assemblage suggests a complex post-depositional history for fine-grained sediments for which the origin has been interpreted as fluvial and lacustrine. Assessment of the spatial and relative temporal distribution of these features shows that the Mg-sulfate features are predominant in the lower part of the section, suggesting local modification of the sediments by early diagenetic fluids. In contrast, light-toned Ca-sulfate veins occur in the whole section and cross-cut all other features. A relatively late stage shift in geochemical conditions could explain this observation. The Pahrump Hills diagenetic features have no equivalent compared to targets analyzed in other locations at Gale crater. Only the light-toned Ca-sulfate veins are present elsewhere, along Curiosity's path, suggesting they formed through a common late-stage process that occurred at over a broad area. JF - Icarus AU - Nachon, Marion AU - Mangold, Nicolas AU - Forni, Olivier AU - Kah, L C AU - Cousin, A AU - Wiens, R C AU - Anderson, R AU - Blaney, D AU - Blank, J G AU - Calef, F AU - Clegg, Samuel M AU - Fabre, C AU - Fisk, Martin R AU - Gasnault, O AU - Grotzinger, John P AU - Kronyak, R AU - Lanza, Nina L AU - Lasue, Jeremie AU - Le Deit, L AU - Le Mouelic, Stephane AU - Maurice, Sylvestre AU - Meslin, P Y AU - Oehler, D Z AU - Payre, V AU - Rapin, W AU - Schroeder, S AU - Stack, K AU - Sumner, D Y1 - 2017/01/01/ PY - 2017 DA - 2017 Jan 01 SP - 121 EP - 136 PB - Elsevier, New York, NY VL - 281 SN - 0019-1035, 0019-1035 KW - halides KW - calcium sulfate KW - calcium KW - magnesium KW - fluorides KW - Mars KW - iron KW - Gale Crater KW - spatial distribution KW - Curiosity Rover KW - chemical composition KW - fluorite KW - ChemCam instrument KW - alkaline earth metals KW - magnesium sulfates KW - sulfates KW - textures KW - veins KW - iron sulfates KW - Pahrump Hills KW - terrestrial planets KW - aqueous alteration KW - planets KW - metals KW - diagenesis KW - Mars Science Laboratory KW - sulfur KW - temporal distribution KW - Mount Sharp KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859792066?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Chemistry+of+diagenetic+features+analyzed+by+ChemCam+at+Pahrump+Hills%2C+Gale+Crater%2C+Mars&rft.au=Nachon%2C+Marion%3BMangold%2C+Nicolas%3BForni%2C+Olivier%3BKah%2C+L+C%3BCousin%2C+A%3BWiens%2C+R+C%3BAnderson%2C+R%3BBlaney%2C+D%3BBlank%2C+J+G%3BCalef%2C+F%3BClegg%2C+Samuel+M%3BFabre%2C+C%3BFisk%2C+Martin+R%3BGasnault%2C+O%3BGrotzinger%2C+John+P%3BKronyak%2C+R%3BLanza%2C+Nina+L%3BLasue%2C+Jeremie%3BLe+Deit%2C+L%3BLe+Mouelic%2C+Stephane%3BMaurice%2C+Sylvestre%3BMeslin%2C+P+Y%3BOehler%2C+D+Z%3BPayre%2C+V%3BRapin%2C+W%3BSchroeder%2C+S%3BStack%2C+K%3BSumner%2C+D&rft.aulast=Nachon&rft.aufirst=Marion&rft.date=2017-01-01&rft.volume=281&rft.issue=&rft.spage=121&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.08.026 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2017-01-01 N1 - Number of references - 50 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables, strat. col. N1 - Last updated - 2017-01-19 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - alkaline earth metals; aqueous alteration; calcium; calcium sulfate; ChemCam instrument; chemical composition; Curiosity Rover; diagenesis; fluorides; fluorite; Gale Crater; halides; iron; iron sulfates; magnesium; magnesium sulfates; Mars; Mars Science Laboratory; metals; Mount Sharp; Pahrump Hills; planets; spatial distribution; sulfates; sulfur; temporal distribution; terrestrial planets; textures; veins DO - http://dx.doi.org/10.1016/j.icarus.2016.08.026 ER - TY - JOUR T1 - Solved; the enigma of labradorite feldspar with incommensurately modulated structure AN - 1859789592; 2017-006111 AB - Intermediate plagioclase feldspars are the most abundant minerals in the Earth's crust. Their incommensurately modulated structure has puzzled geologists and crystallographers for decades since the phenomenon in a labradorite was reported in 1940. Solving the structure is a necessary step toward mapping the complex subsolidus phase relations of plagioclase solid solution. The structure of a homogeneous labradorite (An (sub 51) ) single crystal from a metamorphic rock is solved and refined from single-crystal X-ray diffraction. The result structure can be simplified as alternating I1-like lamellae domains related by inversion twins. The inversion boundary shows an anorthite-like structure with I1 symmetry and is richer in Ca than the neighboring domains with opposite polarity. No albite-like subunits appear in the e-plagioclase structure. The modulated structure displays a unique Al-Si ordering pattern. A density modulation with a variation of 17 mol% in composition is also observed and can be properly described only by applying second-order harmonic waves for the atomic modulation functions. The modulated structure reveals details that cannot be observed from refinement with only main reflections and may be used to assess the ordering state and cooling rate of its host rock. The homogeneity of the crystal indicates the closure of the solvus for Boggild intergrowth at low temperature. The highly ordered modulation supports the thermodynamic stability of e-plagioclase. Both Al-Si ordering and Ca-Na ordering are the driving force for formation of the incommensurately modulated structure. JF - American Mineralogist AU - Jin, Shiyun AU - Xu, Huifang Y1 - 2017 PY - 2017 DA - 2017 SP - 21 EP - 32 PB - Mineralogical Society of America, Washington, DC VL - 102 IS - 1 SN - 0003-004X, 0003-004X KW - silicates KW - calcium KW - alkaline earth metals KW - plagioclase KW - refinement KW - X-ray diffraction data KW - alkali metals KW - crystal structure KW - labradorite KW - sodium KW - order-disorder KW - single-crystal method KW - metals KW - cations KW - framework silicates KW - thermodynamic properties KW - feldspar group KW - 01B:Mineralogy of silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859789592?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/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=Solved%3B+the+enigma+of+labradorite+feldspar+with+incommensurately+modulated+structure&rft.au=Jin%2C+Shiyun%3BXu%2C+Huifang&rft.aulast=Jin&rft.aufirst=Shiyun&rft.date=2017-01-01&rft.volume=102&rft.issue=1&rft.spage=21&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam-2017-5807 L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2017-01-01 N1 - Number of references - 59 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2017-01-19 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - alkali metals; alkaline earth metals; calcium; cations; crystal structure; feldspar group; framework silicates; labradorite; metals; order-disorder; plagioclase; refinement; silicates; single-crystal method; sodium; thermodynamic properties; X-ray diffraction data DO - http://dx.doi.org/10.2138/am-2017-5807 ER - TY - NEWS T1 - NASA X-57 simulator prepares pilots, engineers for flight of electric X-plane AN - 1846208520 JF - UPI Space Daily AU - Matt Kamlet for NASA Armstrong News Y1 - 2016/12/07/ PY - 2016 DA - 2016 Dec 07 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1846208520?accountid=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+X-57+simulator+prepares+pilots%2C+engineers+for+flight+of+electric+X-plane&rft.au=Matt+Kamlet+for+NASA+Armstrong+News&rft.aulast=Matt+Kamlet+for+NASA+Armstrong+News&rft.aufirst=&rft.date=2016-12-07&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 - 2016-12-07 ER - TY - JOUR T1 - The rapid formation of Sputnik Planitia early in Pluto's history AN - 1861108125; 787245-4 JF - Nature (London) AU - Hamilton, Douglas P AU - Stern, S A AU - Moore, J M AU - Young, L A Y1 - 2016/12/01/ PY - 2016 DA - 2016 Dec 01 SP - 97 EP - 99 PB - Macmillan Journals, London VL - 540 IS - 7631 SN - 0028-0836, 0028-0836 KW - albedo KW - solar system KW - obliquity of the ecliptic KW - Sputnik Planitia KW - dwarf planets KW - ice caps KW - genesis KW - paleoenvironment KW - surface features KW - Charon KW - planetary tides KW - interplanetary comparison KW - terrestrial comparison KW - Pluto KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1861108125?accountid=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=Nature+%28London%29&rft.atitle=The+rapid+formation+of+Sputnik+Planitia+early+in+Pluto%27s+history&rft.au=Hamilton%2C+Douglas+P%3BStern%2C+S+A%3BMoore%2C+J+M%3BYoung%2C+L+A&rft.aulast=Hamilton&rft.aufirst=Douglas&rft.date=2016-12-01&rft.volume=540&rft.issue=7631&rft.spage=97&rft.isbn=&rft.btitle=&rft.title=Nature+%28London%29&rft.issn=00280836&rft_id=info:doi/10.1038%2Fnature20586 L2 - http://www.nature.com/nature/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 31 N1 - Document feature - illus. N1 - Last updated - 2017-01-24 N1 - CODEN - NATUAS N1 - SubjectsTermNotLitGenreText - albedo; Charon; dwarf planets; genesis; ice caps; interplanetary comparison; obliquity of the ecliptic; paleoenvironment; planetary tides; Pluto; solar system; Sputnik Planitia; surface features; terrestrial comparison DO - http://dx.doi.org/10.1038/nature20586 ER - TY - JOUR T1 - Reorientation of Sputnik Planitia implies a subsurface ocean on Pluto AN - 1859792464; 2017-004871 JF - Nature (London) AU - Nimmo, Francis AU - Hamilton, Douglas P AU - McKinnon, W B AU - Schenk, P M AU - Binzel, R P AU - Bierson, C J AU - Beyer, R A AU - Moore, J M AU - Stern, S A AU - Weaver, H A AU - Olkin, C B AU - Young, L A AU - Smith, K E Y1 - 2016/12/01/ PY - 2016 DA - 2016 Dec 01 SP - 94 EP - 96 PB - Macmillan Journals, London VL - 540 IS - 7631 SN - 0028-0836, 0028-0836 KW - orientation KW - impact features KW - loading KW - Sputnik Planitia KW - dwarf planets KW - nitrogen KW - topography KW - deposition KW - thickness KW - planetology KW - interplanetary comparison KW - subsurface oceans KW - Pluto KW - ammonia compound KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859792464?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Reorientation+of+Sputnik+Planitia+implies+a+subsurface+ocean+on+Pluto&rft.au=Nimmo%2C+Francis%3BHamilton%2C+Douglas+P%3BMcKinnon%2C+W+B%3BSchenk%2C+P+M%3BBinzel%2C+R+P%3BBierson%2C+C+J%3BBeyer%2C+R+A%3BMoore%2C+J+M%3BStern%2C+S+A%3BWeaver%2C+H+A%3BOlkin%2C+C+B%3BYoung%2C+L+A%3BSmith%2C+K+E&rft.aulast=Nimmo&rft.aufirst=Francis&rft.date=2016-12-01&rft.volume=540&rft.issue=7631&rft.spage=94&rft.isbn=&rft.btitle=&rft.title=Nature+%28London%29&rft.issn=00280836&rft_id=info:doi/10.1038%2Fnature20148 L2 - http://www.nature.com/nature/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 30 N1 - Document feature - illus. incl. sketch map N1 - Last updated - 2017-01-19 N1 - CODEN - NATUAS N1 - SubjectsTermNotLitGenreText - ammonia compound; deposition; dwarf planets; impact features; interplanetary comparison; loading; nitrogen; orientation; planetology; Pluto; Sputnik Planitia; subsurface oceans; thickness; topography DO - http://dx.doi.org/10.1038/nature20148 ER - TY - JOUR T1 - Acute pesticide ingestion managed with yohimbine as a rescue therapy AN - 1851144592 AB - Amitraz is used as a pesticide in agricultural and veterinary medicine. It is primarily a central α2 adrenergic agonist and known to cause central nervous system depression, convulsions, respiratory depression, and bradycardia on severe intoxication. We report a case of a 3-year-old child who presented with accidental ingestion of amitraz solution with signs of severe poisoning. There is no specific antidote of amitraz poisoning in humans, however, animal experiments with α2 adrenergic antagonists such as yohimbine and atimepazole have been successful. The child was managed besides intensive management with enteral yohimbine, and he regained consciousness in 18 h and was successfully weaned off mechanical ventilation. JF - Indian Journal of Critical Care Medicine AU - Nasa, Prashant AU - Juneja, Deven Y1 - 2016/12// PY - 2016 DA - Dec 2016 CY - Mumbai PB - Medknow Publications & Media Pvt. Ltd. VL - 20 IS - 12 SN - 09725229 KW - Medical Sciences KW - Conflicts of interest KW - Pesticides KW - Hyperglycemia KW - Poisoning KW - Consciousness KW - Intensive care UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1851144592?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ahealthcompleteshell&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=Indian+Journal+of+Critical+Care+Medicine&rft.atitle=Acute+pesticide+ingestion+managed+with+yohimbine+as+a+rescue+therapy&rft.au=Nasa%2C+Prashant%3BJuneja%2C+Deven&rft.aulast=Nasa&rft.aufirst=Prashant&rft.date=2016-12-01&rft.volume=20&rft.issue=12&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Indian+Journal+of+Critical+Care+Medicine&rft.issn=09725229&rft_id=info:doi/10.4103%2F0972-5229.195716 LA - English DB - ProQuest Central N1 - Copyright - Copyright Medknow Publications & Media Pvt Ltd Dec 2016 N1 - Last updated - 2016-12-22 DO - http://dx.doi.org/10.4103/0972-5229.195716 ER - TY - JOUR T1 - Water vapor changes under global warming and the linkage to present-day interannual variabilities in CMIP5 models AN - 1850774539; PQ0003938509 AB - The fractional water vapor changes under global warming across 14 Coupled Model Intercomparison Project Phase 5 simulations are analyzed. We show that the mean fractional water vapor changes under global warming in the tropical upper troposphere between 300 and 100 hPa range from 12.4 to 28.0 %/K across all models while the fractional water vapor changes are about 5-8 %/K in other regions and at lower altitudes. The "upper-tropospheric amplification" of the water vapor change is primarily driven by a larger temperature increase in the upper troposphere than in the lower troposphere per degree of surface warming. The relative contributions of atmospheric temperature and relative humidity changes to the water vapor change in each model vary between 71.5 to 131.8 % and 24.8 to -20.1 %, respectively. The inter-model differences in the water vapor change is primarily caused by differences in temperature change, except over the inter-tropical convergence zone within 10 degree S-10 degree N where the model differences due to the relative humidity change are significant. Furthermore, we find that there is generally a positive correlation between the rates of water vapor change for long-tem surface warming and those on the interannual time scales. However, the rates of water vapor change under long-term warming have a systematic offset from those on the inter-annual time scales and the dominant contributor to the differences also differs for the two time scales, suggesting caution needs to be taken when inferring long-term water vapor changes from the observed interannual variations. JF - Climate Dynamics AU - Takahashi, Hanii AU - Su, Hui AU - Jiang, Jonathan H AD - Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA, Hanii.Takahashi@jpl.nasa.gov Y1 - 2016/12// PY - 2016 DA - December 2016 SP - 3673 EP - 3691 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 47 IS - 12 SN - 0930-7575, 0930-7575 KW - Sustainability Science Abstracts; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Relative humidity KW - Convergence zones KW - Water Vapor KW - Variability KW - Simulation Analysis KW - Climates KW - Climate change KW - Climate KW - Temperature KW - Troposphere KW - Greenhouse effect KW - Systematics KW - Global Warming KW - Relative Humidity KW - Altitude KW - Modelling KW - O 2090:Instruments/Methods KW - SW 0810:General KW - Q2 09244:Air-sea coupling UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1850774539?accountid=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=Water+vapor+changes+under+global+warming+and+the+linkage+to+present-day+interannual+variabilities+in+CMIP5+models&rft.au=Takahashi%2C+Hanii%3BSu%2C+Hui%3BJiang%2C+Jonathan+H&rft.aulast=Takahashi&rft.aufirst=Hanii&rft.date=2016-12-01&rft.volume=47&rft.issue=12&rft.spage=3673&rft.isbn=&rft.btitle=&rft.title=Climate+Dynamics&rft.issn=09307575&rft_id=info:doi/10.1007%2Fs00382-016-3035-5 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-12-01 N1 - Number of references - 25 N1 - Last updated - 2017-01-18 N1 - SubjectsTermNotLitGenreText - Convergence zones; Relative humidity; Climate; Climate change; Troposphere; Greenhouse effect; Modelling; Variability; Altitude; Water Vapor; Simulation Analysis; Climates; Temperature; Systematics; Global Warming; Relative Humidity DO - http://dx.doi.org/10.1007/s00382-016-3035-5 ER - TY - JOUR T1 - Downscaling GISS ModelE boreal summer climate over Africa AN - 1850772398; PQ0003927507 AB - The study examines the perceived added value of downscaling atmosphere-ocean global climate model simulations over Africa and adjacent oceans by a nested regional climate model. NASA/Goddard Institute for Space Studies (GISS) coupled ModelE simulations for June-September 1998-2002 are used to form lateral boundary conditions for synchronous simulations by the GISS RM3 regional climate model. The ModelE computational grid spacing is 2 degree latitude by 2.5 degree longitude and the RM3 grid spacing is 0.44 degree . ModelE precipitation climatology for June-September 1998-2002 is shown to be a good proxy for 30-year means so results based on the 5-year sample are presumed to be generally representative. Comparison with observational evidence shows several discrepancies in ModelE configuration of the boreal summer inter-tropical convergence zone (ITCZ). One glaring shortcoming is that ModelE simulations do not advance the West African rain band northward during the summer to represent monsoon precipitation onset over the Sahel. Results for 1998-2002 show that onset simulation is an important added value produced by downscaling with RM3. ModelE Eastern South Atlantic Ocean computed sea-surface temperatures (SST) are some 4 K warmer than reanalysis, contributing to large positive biases in overlying surface air temperatures (Tsfc). ModelE Tsfc are also too warm over most of Africa. RM3 downscaling somewhat mitigates the magnitude of Tsfc biases over the African continent, it eliminates the ModelE double ITCZ over the Atlantic and it produces more realistic orographic precipitation maxima. Parallel ModelE and RM3 simulations with observed SST forcing (in place of the predicted ocean) lower Tsfc errors but have mixed impacts on circulation and precipitation biases. Downscaling improvements of the meridional movement of the rain band over West Africa and the configuration of orographic precipitation maxima are realized irrespective of the SST biases. JF - Climate Dynamics AU - Druyan, Leonard M AU - Fulakeza, Matthew AD - NASA/Goddard Institute for Space Studies, 2880 Broadway, New York, NY, 10025, USA, leonard.druyan@columbia.edu Y1 - 2016/12// PY - 2016 DA - December 2016 SP - 3499 EP - 3515 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 47 IS - 11 SN - 0930-7575, 0930-7575 KW - Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Convergence zones KW - Summer climate KW - Boundary conditions KW - Air temperature KW - Precipitation climatology KW - Monsoon precipitation KW - Ocean-atmosphere system KW - Regional climate models KW - Climatology KW - Sea surface temperatures KW - Modelling KW - Atmospheric precipitations KW - Marine KW - Climate models KW - Air Temperature KW - Simulation Analysis KW - Boundary Conditions KW - Climates KW - Climate KW - Ocean circulation KW - Simulation KW - AS, South Atlantic KW - Precipitation KW - Orographic precipitation KW - A, Atlantic KW - Global climate KW - ASE, Africa KW - Numerical simulations KW - Orographic Precipitation KW - Oceans KW - Africa KW - Rain KW - Monsoons KW - Q2 09102:Institutes and organizations KW - SW 0810:General KW - M2 551.581:Latitudinal Influences (551.581) KW - O 4080:Pollution - Control and Prevention UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1850772398?accountid=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=Climate+Dynamics&rft.atitle=Downscaling+GISS+ModelE+boreal+summer+climate+over+Africa&rft.au=Druyan%2C+Leonard+M%3BFulakeza%2C+Matthew&rft.aulast=Druyan&rft.aufirst=Leonard&rft.date=2016-12-01&rft.volume=47&rft.issue=11&rft.spage=3499&rft.isbn=&rft.btitle=&rft.title=Climate+Dynamics&rft.issn=09307575&rft_id=info:doi/10.1007%2Fs00382-015-2880-y LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-12-01 N1 - Number of references - 26 N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Atmospheric precipitations; Climate; Ocean-atmosphere system; Simulation; Ocean circulation; Climatology; Air temperature; Monsoons; Modelling; Convergence zones; Global climate; Precipitation climatology; Climate models; Numerical simulations; Monsoon precipitation; Summer climate; Regional climate models; Precipitation; Sea surface temperatures; Boundary conditions; Orographic precipitation; Air Temperature; Boundary Conditions; Orographic Precipitation; Simulation Analysis; Oceans; Climates; Rain; ASE, Africa; Africa; AS, South Atlantic; A, Atlantic; Marine DO - http://dx.doi.org/10.1007/s00382-015-2880-y ER - TY - JOUR T1 - Climate cycling on early Mars caused by the carbonate-silicate cycle AN - 1849309968; 2016-106705 AB - For decades, scientists have tried to explain the evidence for fluvial activity on early Mars, but a consensus has yet to emerge regarding the mechanism for producing it. One hypothesis suggests early Mars was warmed by a thick greenhouse atmosphere. Another suggests that early Mars was generally cold but was warmed occasionally by impacts or by episodes of enhanced volcanism. These latter hypotheses struggle to produce the amounts of rainfall needed to form the martian valleys, but are consistent with inferred low rates of weathering compared to Earth. Here, we provide a geophysical mechanism that could have induced cycles of glaciation and deglaciation on early Mars. Our model produces dramatic climate cycles with extended periods of glaciation punctuated by warm periods lasting up to 10 Myr-much longer than those generated in other episodic warming models. The cycles occur because stellar insolation was low, and because CO (sub 2) outgassing is not able to keep pace with CO (sub 2) consumption by silicate weathering followed by deposition of carbonates. While CO (sub 2) by itself is not able to deglaciate early Mars in our model, we assume that the greenhouse effect is enhanced by substantial amounts of H (sub 2) outgassed from Mars' reduced crust and mantle. Our hypothesis can be tested by future Mars exploration that better establishes the time scale for valley formation. JF - Earth and Planetary Science Letters AU - Batalha, Natasha E AU - Kopparapu, Ravi Kumar AU - Haqq-Misra, Jacob AU - Kasting, James F Y1 - 2016/12/01/ PY - 2016 DA - 2016 Dec 01 SP - 7 EP - 13 PB - Elsevier, Amsterdam VL - 455 SN - 0012-821X, 0012-821X KW - silicates KW - albedo KW - obliquity of the ecliptic KW - glaciation KW - one-dimensional models KW - mantle KW - Mars KW - erosion rates KW - paleoclimatology KW - energy balance KW - deglaciation KW - carbon dioxide KW - volcanism KW - ice KW - greenhouse effect KW - degassing KW - valleys KW - rainfall KW - cyclic processes KW - atmosphere KW - terrestrial planets KW - models KW - planets KW - deposition KW - partial pressure KW - hydrogen KW - fluvial features KW - greenhouse gases KW - weathering rates KW - carbonates KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849309968?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Climate+cycling+on+early+Mars+caused+by+the+carbonate-silicate+cycle&rft.au=Batalha%2C+Natasha+E%3BKopparapu%2C+Ravi+Kumar%3BHaqq-Misra%2C+Jacob%3BKasting%2C+James+F&rft.aulast=Batalha&rft.aufirst=Natasha&rft.date=2016-12-01&rft.volume=455&rft.issue=&rft.spage=7&rft.isbn=&rft.btitle=&rft.title=Earth+and+Planetary+Science+Letters&rft.issn=0012821X&rft_id=info:doi/10.1016%2Fj.epsl.2016.08.044 L2 - http://www.sciencedirect.com/science/journal/0012821X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 55 N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Includes appendix N1 - Last updated - 2016-12-16 N1 - CODEN - EPSLA2 N1 - SubjectsTermNotLitGenreText - albedo; atmosphere; carbon dioxide; carbonates; cyclic processes; degassing; deglaciation; deposition; energy balance; erosion rates; fluvial features; glaciation; greenhouse effect; greenhouse gases; hydrogen; ice; mantle; Mars; models; obliquity of the ecliptic; one-dimensional models; paleoclimatology; partial pressure; planets; rainfall; silicates; terrestrial planets; valleys; volcanism; weathering rates DO - http://dx.doi.org/10.1016/j.epsl.2016.08.044 ER - TY - JOUR T1 - Consistent Estimates of Tsunami Energy Show Promise for Improved Early Warning AN - 1846419336; PQ0003893386 AB - Early tsunami warning critically hinges on rapid determination of the tsunami hazard potential in real-time, before waves inundate critical coastlines. Tsunami energy can quickly characterize the destructive potential of generated waves. Traditional seismic analysis is inadequate to accurately predict a tsunami's energy. Recently, two independent approaches have been proposed to determine tsunami source energy: one inverted from the Deep-ocean Assessment and Reporting of Tsunamis (DART) data during the tsunami propagation, and the other derived from the land-based coastal global positioning system (GPS) during tsunami generation. Here, we focus on assessing these two approaches with data from the March 11, 2011 Japanese tsunami. While the GPS approach takes into consideration the dynamic earthquake process, the DART inversion approach provides the actual tsunami energy estimation of the propagating tsunami waves; both approaches lead to consistent energy scales for previously studied tsunamis. Encouraged by these promising results, we examined a real-time approach to determine tsunami source energy by combining these two methods: first, determine the tsunami source from the globally expanding GPS network immediately after an earthquake for near-field early warnings; and then to refine the tsunami energy estimate from nearby DART measurements for improving forecast accuracy and early cancelations. The combination of these two real-time networks may offer an appealing opportunity for: early determination of the tsunami threat for the purpose of saving more lives, and early cancelation of tsunami warnings to avoid unnecessary false alarms. JF - Pure and Applied Geophysics AU - Titov, V AU - Song, YTony AU - Tang, L AU - Bernard, EN AU - Bar-Sever, Y AU - Wei, Y AD - NOAA Center for Tsunami Research, Pacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration, 7600 Sand Point Way NE, Seattle, WA, 98115, USA, tony.song@jpl.nasa.gov Y1 - 2016/12// PY - 2016 DA - December 2016 SP - 3863 EP - 3880 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 173 IS - 12 SN - 0033-4553, 0033-4553 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Earthquakes KW - INW, Japan KW - Positioning systems KW - Tsunami hazard KW - Tsunami generation KW - Hazards KW - Waves KW - Tsunamis KW - Geophysics KW - Coasts KW - Tsunami sources KW - Global Positioning System (GPS) satellite KW - Wave propagation KW - Forecast accuracy KW - Inversions KW - Tsunami propagation KW - Energy KW - Wave generation KW - Q2 09267:Gravity and geodesy KW - SW 0810:General KW - M2 551.466:Ocean Waves and Tides (551.466) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1846419336?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Pure+and+Applied+Geophysics&rft.atitle=Consistent+Estimates+of+Tsunami+Energy+Show+Promise+for+Improved+Early+Warning&rft.au=Titov%2C+V%3BSong%2C+YTony%3BTang%2C+L%3BBernard%2C+EN%3BBar-Sever%2C+Y%3BWei%2C+Y&rft.aulast=Titov&rft.aufirst=V&rft.date=2016-12-01&rft.volume=173&rft.issue=12&rft.spage=3863&rft.isbn=&rft.btitle=&rft.title=Pure+and+Applied+Geophysics&rft.issn=00334553&rft_id=info:doi/10.1007%2Fs00024-016-1312-1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-12-01 N1 - Number of references - 53 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Earthquakes; Positioning systems; Tsunami generation; Geophysics; Tsunamis; Wave generation; Wave propagation; Inversions; Coasts; Tsunami propagation; Tsunami sources; Tsunami hazard; Global Positioning System (GPS) satellite; Forecast accuracy; Hazards; Energy; Waves; INW, Japan DO - http://dx.doi.org/10.1007/s00024-016-1312-1 ER - TY - JOUR T1 - Application of the ATP assay to rapidly assess cleanliness of spacecraft surfaces: a path to set a standard for future missions AN - 1846414735; PQ0003886281 AB - The National Aeronautics and Space Administration (NASA) measures and validates the biological cleanliness of spacecraft surfaces by counting endospores using the NASA standard assay (NSA). NASA has also approved an adenosine-5'-triphosphate (ATP)-based detection methodology as a means to prescreen surfaces for the presence of microbial contamination, prior to the spore assay. During Mars Science Laboratory (MSL) spacecraft assembly, test, and launch operations, 4853 surface samples were collected to verify compliance with the bioburden requirement at launch. A subset of these samples was measured for microbial cleanliness using both the NSA (n = 272) and ATP assay (n = 249). NSA results revealed that ~8% (22/272) of the samples showed the presence of at least one spore, whereas ATP assay measurements indicated that ~15% (35/249) of samples exceeded the "threshold cleanliness limit" of 2.3 10 super(-11) mmol ATP per 25 cm super(2) used by MSL. Of the 22 NSA samples with a spore, 18% (4/22) were considered above the level of acceptance by both techniques. Based on post launch data analysis presented here, it was determined that this threshold cleanliness limit of 2.3 10 super(-11) mmol ATP per 25 cm super(2) could be adopted as a benchmark for assessing spacecraft surface cleanliness. This study clearly demonstrates the value of using alternative methods to rapidly assess spacecraft cleanliness, and provides useful information regarding the process. JF - AMB Express AU - Benardini, James N AU - Venkateswaran, Kasthuri AD - Biotechnology and Planetary Protection Group, Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., M/S 89-2, Pasadena, CA, 91109, USA, kjvenkat@jpl.nasa.gov Y1 - 2016/12// PY - 2016 DA - December 2016 SP - 1 EP - 8 PB - Springer Science & Business Media, Berlin/Heidelberg VL - 6 IS - 1 KW - Microbiology Abstracts A: Industrial & Applied Microbiology KW - Data processing KW - Contamination KW - Information processing KW - ATP KW - Enumeration KW - Spacecraft KW - Spores KW - A 01300:Methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1846414735?accountid=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=AMB+Express&rft.atitle=Application+of+the+ATP+assay+to+rapidly+assess+cleanliness+of+spacecraft+surfaces%3A+a+path+to+set+a+standard+for+future+missions&rft.au=Benardini%2C+James+N%3BVenkateswaran%2C+Kasthuri&rft.aulast=Benardini&rft.aufirst=James&rft.date=2016-12-01&rft.volume=6&rft.issue=1&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=AMB+Express&rft.issn=2191-0855&rft_id=info:doi/10.1186%2Fs13568-016-0286-9 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-12-01 N1 - Number of references - 19 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Data processing; Contamination; Information processing; ATP; Enumeration; Spores; Spacecraft DO - http://dx.doi.org/10.1186/s13568-016-0286-9 ER - TY - JOUR T1 - The Organ Preservation Alliance: Accelerating research to enable breakthroughs in organ cryopreservation AN - 1846404882; PQ0003890269 JF - Cryobiology AU - Weegman, B AU - Lewis, J AD - Organ Preservation Alliance, NASA Research Park, Moffett Field, California, United States Y1 - 2016/12// PY - 2016 DA - December 2016 SP - 442 PB - Elsevier B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 73 IS - 3 SN - 0011-2240, 0011-2240 KW - Biotechnology and Bioengineering Abstracts UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1846404882?accountid=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=Cryobiology&rft.atitle=The+Organ+Preservation+Alliance%3A+Accelerating+research+to+enable+breakthroughs+in+organ+cryopreservation&rft.au=Weegman%2C+B%3BLewis%2C+J&rft.aulast=Weegman&rft.aufirst=B&rft.date=2016-12-01&rft.volume=73&rft.issue=3&rft.spage=442&rft.isbn=&rft.btitle=&rft.title=Cryobiology&rft.issn=00112240&rft_id=info:doi/10.1016%2Fj.cryobiol.2016.09.165 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-12-01 N1 - Last updated - 2016-12-07 DO - http://dx.doi.org/10.1016/j.cryobiol.2016.09.165 ER - TY - JOUR T1 - Return to normal life after hematopoietic stem cell transplantation for thalassemia: a study of patients transplanted from matched sibling donors AN - 1846300020 JF - Bone Marrow Transplantation AU - Caocci, G AU - Vacca, A AU - Piras, E AU - Serreli, V AU - Dessi, C AU - Marcias, M AU - Risso, P AU - La Nasa, G Y1 - 2016/12// PY - 2016 DA - Dec 2016 SP - 1640 EP - 1641 CY - London PB - Nature Publishing Group VL - 51 IS - 12 SN - 02683369 KW - Medical Sciences--Experimental Medicine, Laboratory Technique UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1846300020?accountid=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=Bone+Marrow+Transplantation&rft.atitle=Return+to+normal+life+after+hematopoietic+stem+cell+transplantation+for+thalassemia%3A+a+study+of+patients+transplanted+from+matched+sibling+donors&rft.au=Caocci%2C+G%3BVacca%2C+A%3BPiras%2C+E%3BSerreli%2C+V%3BDessi%2C+C%3BMarcias%2C+M%3BRisso%2C+P%3BLa+Nasa%2C+G&rft.aulast=Caocci&rft.aufirst=G&rft.date=2016-12-01&rft.volume=51&rft.issue=12&rft.spage=1640&rft.isbn=&rft.btitle=&rft.title=Bone+Marrow+Transplantation&rft.issn=02683369&rft_id=info:doi/10.1038%2Fbmt.2016.243 LA - English DB - ProQuest Central N1 - Copyright - Copyright Nature Publishing Group Dec 2016 N1 - Last updated - 2016-12-07 DO - http://dx.doi.org/10.1038/bmt.2016.243 ER - TY - JOUR T1 - Aerosol optical depth as observed by the Mars Science Laboratory REMS UV photodiodes AN - 1828845114; 2016-088182 AB - Systematic observations taken by the REMS UV photodiodes on a daily basis throughout the landed Mars Science Laboratory mission provide a highly useful tool for characterizing aerosols above Gale Crater. Radiative transfer modeling is used to model the approximately 1.75 Mars Years of observations taken to date taking into account multiple scattering from aerosols and the extended field of view of the REMS UV photodiodes. The retrievals show in detail the annual cycle of aerosol optical depth, which is punctuated with numerous short timescale events of increased optical depth. Dust deposition onto the photodiodes is accounted for by comparison with aerosol optical depth derived from direct imaging of the Sun by Mastcam. The effect of dust on the photodiodes is noticeable, but does not dominate the signal. Cleaning of dust from the photodiodes was observed in the season around L (sub s) =270 degrees , but not during other seasons. Systematic deviations in the residuals from the retrieval fit are indicative of changes in aerosol effective particle size, with larger particles present during periods of increased optical depth. This seasonal dependence of aerosol particle size is expected as dust activity injects larger particles into the air, while larger aerosols settle out of the atmosphere more quickly leading to a smaller average particle size over time. JF - Icarus AU - Smith, Michael D AU - Zorzano, Maria-Paz AU - Lemmon, Mark AU - Martin-Torres, Javier AU - Mendaza de Cal, Teresa Y1 - 2016/12// PY - 2016 DA - December 2016 SP - 234 EP - 248 PB - Elsevier, New York, NY VL - 280 SN - 0019-1035, 0019-1035 KW - settling KW - radiative transfer model KW - photodiodes KW - clastic sediments KW - atmosphere KW - Mars KW - ultraviolet radiation KW - size KW - Gale Crater KW - terrestrial planets KW - planets KW - Rover Environmental Monitoring Station KW - electromagnetic radiation KW - dust KW - sediments KW - Mars Science Laboratory KW - aerosols KW - seasonal variations KW - algorithms KW - optical depth KW - particles KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1828845114?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Aerosol+optical+depth+as+observed+by+the+Mars+Science+Laboratory+REMS+UV+photodiodes&rft.au=Smith%2C+Michael+D%3BZorzano%2C+Maria-Paz%3BLemmon%2C+Mark%3BMartin-Torres%2C+Javier%3BMendaza+de+Cal%2C+Teresa&rft.aulast=Smith&rft.aufirst=Michael&rft.date=2016-12-01&rft.volume=280&rft.issue=&rft.spage=234&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.07.012 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 59 N1 - PubXState - NY N1 - Document feature - illus. N1 - Last updated - 2016-10-25 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - aerosols; algorithms; atmosphere; clastic sediments; dust; electromagnetic radiation; Gale Crater; Mars; Mars Science Laboratory; optical depth; particles; photodiodes; planets; radiative transfer model; Rover Environmental Monitoring Station; seasonal variations; sediments; settling; size; terrestrial planets; ultraviolet radiation DO - http://dx.doi.org/10.1016/j.icarus.2016.07.012 ER - TY - JOUR T1 - The degradational history of Endeavour Crater, Mars AN - 1828845089; 2016-088198 AB - Endeavour crater (2.28 degrees S, 354.77 degrees E) is a Noachian-aged 22 km-diameter impact structure of complex morphology in southern Meridiani Planum. The degradation state of the crater has been studied using orbital data from the Mars Reconnaissance Orbiter and in situ data from the Opportunity rover. Multiple exposed crater rim segments range in elevation from approximately 10 m to over 100 m above the level of the embaying Burns Formation. The crater is 200-500 m deep and the interior wall exposes over approximately 300 m of relief around the southern half of the crater. Slopes of 6-16% flank the exterior of the largest western rim segment. On the west side of the crater, both pre-impact rocks (Matijevic Formation) and Endeavour impact ejecta (Shoemaker Formation) are present at Cape York, but only the Shoemaker Formation (up to approximately 140 m section) outcrops at Cape Tribulation. Study of similar sized pristine craters Bopolu and Tooting (with complex morphology) and use of metrics for describing the morphometry of martian craters suggest the original rim of Endeavour averaged 410 m in elevation, but relief varied about + or -200 m around the circumference. A 250-275 m section of ejecta (+ or -50-60 m) would have comprised a significant fraction of the rim height. The original crater was likely 1.5-2.2 km deep and may have had a central peak (no obvious evidence is present) between 200 and 500 m high. Comparison between the predicted original and current form of Endeavour suggests 100-200 m of rim degradation ranging from nearly complete ejecta removal in some locations to preservation of a thick ejecta section in others. Differences in rim relief are at least partially due to degradation and not just original rim relief and (or) due to offsets along rim faults. Most degradation occurred prior to deposition of the Burns Formation which is approximately 200 m thick outside the crater, but likely thicker inside the crater. Aeolian stripping of the Burns Formation continues today via prevailing winds and lesser mass wasting is important on steeper walls. However, analogy with degraded Noachian craters south of Meridiani suggests fluvial processes were most important in early degradation and is consistent with the nearly complete removal of ejecta from some rim segments, gaps in the rim, formation of Marathon Valley, and interpretation of a pediment flanking the western rim. Slope processes likely accompanied incision that may have accounted for tens of metres rim lowering near Marathon Valley to more than 100 m at Cape York. JF - Icarus AU - Grant, J A AU - Parker, T J AU - Crumpler, L S AU - Wilson, S A AU - Golombek, M P AU - Mittlefehldt, D W Y1 - 2016/12// PY - 2016 DA - December 2016 SP - 22 EP - 36 PB - Elsevier, New York, NY VL - 280 SN - 0019-1035, 0019-1035 KW - Shoemaker Formation KW - pediments KW - degradation KW - Noachian KW - impact features KW - erosion KW - Mars KW - erosion features KW - Context Camera KW - relief KW - Mars Exploration Rover KW - dimensions KW - HiRISE KW - Burns Formation KW - Opportunity Rover KW - Tooting Crater KW - morphometry KW - Mars Reconnaissance Orbiter KW - ring structures KW - ejecta KW - Cape Tribulation KW - Cape York KW - terrestrial planets KW - morphology KW - planets KW - complex craters KW - impact craters KW - Bopolu Crater KW - Matijevic Formation KW - preservation KW - Marathon Valley KW - Endeavour Crater KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1828845089?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+degradational+history+of+Endeavour+Crater%2C+Mars&rft.au=Grant%2C+J+A%3BParker%2C+T+J%3BCrumpler%2C+L+S%3BWilson%2C+S+A%3BGolombek%2C+M+P%3BMittlefehldt%2C+D+W&rft.aulast=Grant&rft.aufirst=J&rft.date=2016-12-01&rft.volume=280&rft.issue=&rft.spage=22&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.08.019 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 60 N1 - PubXState - NY N1 - Document feature - illus. incl. 5 tables, sketch maps N1 - Last updated - 2016-10-25 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - Bopolu Crater; Burns Formation; Cape Tribulation; Cape York; complex craters; Context Camera; degradation; dimensions; ejecta; Endeavour Crater; erosion; erosion features; HiRISE; impact craters; impact features; Marathon Valley; Mars; Mars Exploration Rover; Mars Reconnaissance Orbiter; Matijevic Formation; morphology; morphometry; Noachian; Opportunity Rover; pediments; planets; preservation; relief; ring structures; Shoemaker Formation; terrestrial planets; Tooting Crater DO - http://dx.doi.org/10.1016/j.icarus.2015.08.019 ER - TY - JOUR T1 - Characteristics of pebble and cobble-sized clasts along the Curiosity Rover traverse from sol 100 to 750; terrain types, potential sources, and transport mechanisms AN - 1828845073; 2016-088200 AB - We combine the results of orbitally-derived morphologic and thermal inertia data with in situ observations of abundance, size, morphologic characteristics, and distribution of pebble- to cobble-sized clasts along the Curiosity rover traverse. Our goals are to characterize rock sources and transport history, and improve our ability to predict upcoming terrain. There are ten clast types, with nine types interpreted as sedimentary rocks. Only Type 3 clasts had morphologies indicative of significant wear through transport; thus, most clast types are indicative of nearby outcrops or prior presence of laterally extensive sedimentary rock layers, consistent with the erosional landscape. A minor component may reflect impact delivery of more distant material. Types 1 and 4 are heavily-cemented sandstones, likely associated with a "caprock" layer. Types 5 and 6 (and possibly 7) are pebble-rich sandstones, with varying amounts of cement leading to varying susceptibility to erosion/wear. Type 3 clasts are rounded pebbles likely transported and deposited alluvially, then worn out of pebbly sandstone/conglomerate. Types 9 and 10 are poorly-sorted sandstones, with Type 9 representing fragments of Square Top-type layers, and Type 10 deriving from basal or other Mt. Sharp layers. Types 2, 8 and 9 are considered exotics.There are few clear links between clast type and terrain surface roughness (particularly in identifying terrain that is challenging for the rover to navigate). Orbital data may provide a reasonable prediction of certain end-member terrains but the complex interplay between variables that contribute to surface characteristics makes discriminating between terrain types from orbital data problematic. Prediction would likely be improved through higher-resolution thermal inertia data. JF - Icarus AU - Yingst, R A AU - Cropper, K AU - Gupta, S AU - Kah, L C AU - Williams, R M E AU - Blank, Jennifer G AU - Calef, F, III AU - Hamilton, V E AU - Lewis, K W AU - Shechet, J AU - McBride, Marie Julia AU - Bridges, Nathan T AU - Frias, J Martinez AU - Newsom, H Y1 - 2016/12// PY - 2016 DA - December 2016 SP - 72 EP - 92 PB - Elsevier, New York, NY VL - 280 SN - 0019-1035, 0019-1035 KW - thermal inertia KW - geotraverses KW - sandstone KW - rounding KW - pebbles KW - Mars KW - Gale Crater KW - sedimentary rocks KW - transport KW - Curiosity Rover KW - sediments KW - sorting KW - orbital observations KW - cement KW - THEMIS KW - clastic sediments KW - roughness KW - clasts KW - conglomerate KW - size KW - terrestrial planets KW - morphology KW - cobbles KW - planets KW - terrains KW - Mars Science Laboratory KW - fluvial features KW - Mount Sharp KW - clastic rocks KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1828845073?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Characteristics+of+pebble+and+cobble-sized+clasts+along+the+Curiosity+Rover+traverse+from+sol+100+to+750%3B+terrain+types%2C+potential+sources%2C+and+transport+mechanisms&rft.au=Yingst%2C+R+A%3BCropper%2C+K%3BGupta%2C+S%3BKah%2C+L+C%3BWilliams%2C+R+M+E%3BBlank%2C+Jennifer+G%3BCalef%2C+F%2C+III%3BHamilton%2C+V+E%3BLewis%2C+K+W%3BShechet%2C+J%3BMcBride%2C+Marie+Julia%3BBridges%2C+Nathan+T%3BFrias%2C+J+Martinez%3BNewsom%2C+H&rft.aulast=Yingst&rft.aufirst=R&rft.date=2016-12-01&rft.volume=280&rft.issue=&rft.spage=72&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.03.001 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 63 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table, sketch maps N1 - Last updated - 2016-10-25 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - cement; clastic rocks; clastic sediments; clasts; cobbles; conglomerate; Curiosity Rover; fluvial features; Gale Crater; geotraverses; Mars; Mars Science Laboratory; morphology; Mount Sharp; orbital observations; pebbles; planets; roughness; rounding; sandstone; sedimentary rocks; sediments; size; sorting; terrains; terrestrial planets; THEMIS; thermal inertia; transport DO - http://dx.doi.org/10.1016/j.icarus.2016.03.001 ER - TY - JOUR T1 - Results of a Hubble Space Telescope search for natural satellites of dwarf planet 1 Ceres AN - 1828845001; 2016-088185 AB - In order to prepare for the arrival of the Dawn spacecraft at Ceres, a search for satellites was undertaken by the Hubble Space Telescope (HST) to enhance the mission science return and to ensure spacecraft safety. Previous satellite searches from ground-based telescopes have detected no satellites within Ceres' Hill sphere down to a size of 3 km (Gehrels et al. 1987) and early HST investigations searched to a limit of 1-2 km (Bieryla et al. 2011). The Wide Field Camera 3 (WFC3) on board the HST was used to image Ceres between 14 April-28 April 2014. These images cover approximately the inner third of Ceres' Hill sphere, where the Hill sphere is the region surrounding Ceres where stable satellite orbits are possible. We performed a deep search for possible companions orbiting Ceres. No natural companions were located down to a diameter of 48 m, over most of the Hill sphere to a distance of 205,000 km (434 Ceres radii) from the surface of Ceres. It was impossible to search all the way to the surface of Ceres because of scattered light, but at a distance of 2865 km (five Ceres radii), the search limit was determined to be 925 m. JF - Icarus AU - DeMario, Benjamin E AU - Schmidt, Britney E AU - Mutchler, Max J AU - Li, Jian-Yang AU - McFadden, Lucy A AU - McLean, Brian J AU - Russell, Christopher T Y1 - 2016/12// PY - 2016 DA - December 2016 SP - 308 EP - 314 PB - Elsevier, New York, NY VL - 280 SN - 0019-1035, 0019-1035 KW - Ceres KW - asteroids KW - telescope methods KW - Kuiper Belt KW - Hill sphere KW - data processing KW - stability KW - dwarf planets KW - size KW - detection KW - Hubble Space Telescope KW - satellites KW - image analysis KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1828845001?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Results+of+a+Hubble+Space+Telescope+search+for+natural+satellites+of+dwarf+planet+1+Ceres&rft.au=DeMario%2C+Benjamin+E%3BSchmidt%2C+Britney+E%3BMutchler%2C+Max+J%3BLi%2C+Jian-Yang%3BMcFadden%2C+Lucy+A%3BMcLean%2C+Brian+J%3BRussell%2C+Christopher+T&rft.aulast=DeMario&rft.aufirst=Benjamin&rft.date=2016-12-01&rft.volume=280&rft.issue=&rft.spage=308&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.07.005 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 27 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2016-10-25 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - asteroids; Ceres; data processing; detection; dwarf planets; Hill sphere; Hubble Space Telescope; image analysis; Kuiper Belt; satellites; size; stability; telescope methods DO - http://dx.doi.org/10.1016/j.icarus.2016.07.005 ER - TY - JOUR T1 - Comparison of areas in shadow from imaging and altimetry in the north polar region of Mercury and implications for polar ice deposits AN - 1828844696; 2016-088177 AB - Earth-based radar observations and results from the MESSENGER mission have provided strong evidence that permanently shadowed regions near Mercury's poles host deposits of water ice. MESSENGER's complete orbital image and topographic datasets enable Mercury's surface to be observed and modeled under an extensive range of illumination conditions. The shadowed regions of Mercury's north polar region from 65 degrees N to 90 degrees N were mapped by analyzing Mercury Dual Imaging System (MDIS) images and by modeling illumination with Mercury Laser Altimeter (MLA) topographic data. The two independent methods produced strong agreement in identifying shadowed areas. All large radar-bright deposits, those hosted within impact craters > or =6 km in diameter, collocate with regions of shadow identified by both methods. However, only approximately 46% of the persistently shadowed areas determined from images and approximately 43% of the permanently shadowed areas derived from altimetry host radar-bright materials. Some sizable regions of shadow that do not host radar-bright deposits experience thermal conditions similar to those that do. The shadowed craters that lack radar-bright materials show a relation with longitude that is not related to the thermal environment, suggesting that the Earth-based radar observations of these locations may have been limited by viewing geometry, but it is also possible that water ice in these locations is insulated by anomalously thick lag deposits or that these shadowed regions do not host water ice. JF - Icarus AU - Deutsch, Ariel N AU - Chabot, Nancy L AU - Mazarico, Erwan AU - Ernst, Carolyn M AU - Head, James W AU - Neumann, Gregory A AU - Solomon, Sean C Y1 - 2016/12// PY - 2016 DA - December 2016 SP - 158 EP - 171 PB - Elsevier, New York, NY VL - 280 SN - 0019-1035, 0019-1035 KW - water KW - polar regions KW - imagery KW - Mercury Dual Imaging System KW - data processing KW - radar methods KW - mapping KW - altimetry KW - terrestrial planets KW - spatial distribution KW - planets KW - topography KW - craters KW - ice KW - permanently shadowed regions KW - Mercury Planet KW - Mercury Laser Altimeter KW - MESSENGER Mission KW - image analysis KW - backscattering KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1828844696?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Mercury%27s+crustal+magnetic+field+from+low-altitude+measurements+by+MESSENGER&rft.au=Johnson%2C+Catherine+L%3BPhillips%2C+Roger+J%3BPurucker%2C+Michael+E%3BAnderson%2C+Brian+J%3BByrne%2C+Paul+K%3BDenevi%2C+Brett+W%3BFan%2C+Kevin+A%3BFeinberg%2C+Joshua+M%3BHauck%2C+Steven+A%3BHead%2C+James+W%2C+III%3BKorth%2C+Haje%3BJames%2C+Peter+B%3BMazarico%2C+Erwan%3BNeumann%2C+Gregory+A%3BPhilpott%2C+Lydia+C%3BSiegler%2C+Matthew+A%3BStrauss%2C+Becky+E%3BTsyganenko%2C+Nikolai+A+%28Nikolay+A%29%3BSolomon%2C+Sean+C%3BAnonymous&rft.aulast=Johnson&rft.aufirst=Catherine&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 36 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables, sketch maps N1 - Last updated - 2016-10-25 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - altimetry; backscattering; craters; data processing; ice; image analysis; imagery; mapping; Mercury Dual Imaging System; Mercury Laser Altimeter; Mercury Planet; MESSENGER Mission; permanently shadowed regions; planets; polar regions; radar methods; spatial distribution; terrestrial planets; topography; water DO - http://dx.doi.org/10.1016/j.icarus.2016.06.015 ER - TY - NEWS T1 - Extremely Warm 2015-'16 Winter Cyclone Weakened Arctic Sea Ice Pack AN - 1840898701 JF - UPI Space Daily AU - Maria-Jose Vinas for NASA Earth News Y1 - 2016/11/17/ PY - 2016 DA - 2016 Nov 17 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840898701?accountid=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=Extremely+Warm+2015-%2716+Winter+Cyclone+Weakened+Arctic+Sea+Ice+Pack&rft.au=Maria-Jose+Vinas+for+NASA+Earth+News&rft.aulast=Maria-Jose+Vinas+for+NASA+Earth+News&rft.aufirst=&rft.date=2016-11-17&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 - 2016-11-17 ER - TY - JOUR T1 - In situ measurement of atmospheric krypton and xenon on Mars with Mars Science Laboratory AN - 1849308149; 2016-110865 AB - Mars Science Laboratory's Sample Analysis at Mars (SAM) investigation has measured all of the stable isotopes of the heavy noble gases krypton and xenon in the martian atmosphere, in situ, from the Curiosity Rover at Gale Crater, Mars. Previous knowledge of martian atmospheric krypton and xenon isotope ratios has been based upon a combination of the Viking mission's krypton and xenon detections and measurements of noble gas isotope ratios in martian meteorites. However, the meteorite measurements reveal an impure mixture of atmospheric, mantle, and spallation contributions. The xenon and krypton isotopic measurements reported here include the complete set of stable isotopes, unmeasured by Viking. The new results generally agree with Mars meteorite measurements but also provide a unique opportunity to identify various non-atmospheric heavy noble gas components in the meteorites. Kr isotopic measurements define a solar-like atmospheric composition, but deviating from the solar wind pattern at (super 80) Kr and (super 82) Kr in a manner consistent with contributions originating from neutron capture in Br. The Xe measurements suggest an intriguing possibility that isotopes lighter than (super 132) Xe have been enriched to varying degrees by spallation and neutron capture products degassed to the atmosphere from the regolith, and a model is constructed to explore this possibility. Such a spallation component, however, is not apparent in atmospheric Xe trapped in the glassy phases of martian meteorites. JF - Earth and Planetary Science Letters AU - Conrad, Pamela G AU - Malespin, C A AU - Franz, H B AU - Pepin, R O AU - Trainer, Melissa G AU - Schwenzer, S P AU - Atreya, S K AU - Freissinet, Caroline AU - Jones, J H AU - Manning, H AU - Owen, T AU - Pavlov, A A AU - Wiens, R C AU - Wong, M H AU - Mahaffy, Paul R Y1 - 2016/11/15/ PY - 2016 DA - 2016 Nov 15 SP - 1 EP - 9 PB - Elsevier, Amsterdam VL - 454 SN - 0012-821X, 0012-821X KW - stony meteorites KW - isotopes KW - Martian meteorites KW - enrichment KW - halogens KW - mass spectra KW - Mars KW - stable isotopes KW - Gale Crater KW - meteorites KW - noble gases KW - mixing KW - Curiosity Rover KW - spectra KW - spallation KW - in situ KW - neutron capture KW - atmosphere KW - bromine KW - xenon KW - krypton KW - achondrites KW - measurement KW - terrestrial planets KW - planets KW - Mars Science Laboratory KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849308149?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=In+situ+measurement+of+atmospheric+krypton+and+xenon+on+Mars+with+Mars+Science+Laboratory&rft.au=Conrad%2C+Pamela+G%3BMalespin%2C+C+A%3BFranz%2C+H+B%3BPepin%2C+R+O%3BTrainer%2C+Melissa+G%3BSchwenzer%2C+S+P%3BAtreya%2C+S+K%3BFreissinet%2C+Caroline%3BJones%2C+J+H%3BManning%2C+H%3BOwen%2C+T%3BPavlov%2C+A+A%3BWiens%2C+R+C%3BWong%2C+M+H%3BMahaffy%2C+Paul+R&rft.aulast=Conrad&rft.aufirst=Pamela&rft.date=2016-11-15&rft.volume=454&rft.issue=&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Earth+and+Planetary+Science+Letters&rft.issn=0012821X&rft_id=info:doi/10.1016%2Fj.epsl.2016.08.028 L2 - http://www.sciencedirect.com/science/journal/0012821X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 47 N1 - Document feature - illus. incl. 4 tables N1 - SuppNotes - Includes appendix N1 - Last updated - 2016-12-16 N1 - CODEN - EPSLA2 N1 - SubjectsTermNotLitGenreText - achondrites; atmosphere; bromine; Curiosity Rover; enrichment; Gale Crater; halogens; in situ; isotopes; krypton; Mars; Mars Science Laboratory; Martian meteorites; mass spectra; measurement; meteorites; mixing; neutron capture; noble gases; planets; regolith; spallation; spectra; stable isotopes; stony meteorites; terrestrial planets; xenon DO - http://dx.doi.org/10.1016/j.epsl.2016.08.028 ER - TY - JOUR T1 - A high continental weathering flux into Paleoarchean seawater revealed by strontium isotope analysis of 3.26 Ga barite AN - 1849307864; 2016-110868 AB - Controls on Archean seawater chemistry remain controversial. Many studies have suggested that it was largely controlled by oceanic hydrothermal fluid circulation. Recent work, however, from clastic sequences, Hf-O isotope data from detrital zircons, and models for the Rb/Sr evolution of the continental crust suggest that intense continental weathering and low-temperature surface alteration were more important than previously thought during the early Archean. This is consistent with biogeochemical studies that suggest the Archean had a diverse microbial ecology, which would, in part, need to be sustained by nutrients (e.g., phosphorus) that were derived from continental weathering. To further quantify continental weathering during the early Archean, we analyzed 3.26 Ga barite from the Fig Tree Group, South Africa for strontium, oxygen, and sulfur isotope compositions. We propose that the seawater component of the barite is characterized by (super 87) Sr/ (super 86) Sr ratios >0.701, which is significantly more radiogenic than contemporaneous mantle ( approximately 0.7007-0.7008). The radiogenic nature of seawater at this time suggests that the continental weathering flux at 3.26 Ga had a large impact on ocean chemistry 400 million years earlier than previously suggested. JF - Earth and Planetary Science Letters AU - Satkoski, Aaron M AU - Lowe, Donald R AU - Beard, Brian L AU - Coleman, Max L AU - Johnson, Clark M Y1 - 2016/11/15/ PY - 2016 DA - 2016 Nov 15 SP - 28 EP - 35 PB - Elsevier, Amsterdam VL - 454 SN - 0012-821X, 0012-821X KW - alteration KW - sea water KW - oxygen KW - isotopes KW - mantle KW - continental crust KW - Paleoarchean KW - stable isotopes KW - temperature KW - paleoecology KW - Archean KW - South Africa KW - Barberton greenstone belt KW - alkaline earth metals KW - Precambrian KW - sulfates KW - isotope ratios KW - O-18/O-16 KW - weathering KW - Sr-87/Sr-86 KW - Fig Tree Group KW - S-34/S-32 KW - metals KW - Southern Africa KW - low temperature KW - sulfur KW - Africa KW - barite KW - weathering rates KW - strontium KW - crust KW - microorganisms KW - 12:Stratigraphy KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849307864?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=A+high+continental+weathering+flux+into+Paleoarchean+seawater+revealed+by+strontium+isotope+analysis+of+3.26+Ga+barite&rft.au=Satkoski%2C+Aaron+M%3BLowe%2C+Donald+R%3BBeard%2C+Brian+L%3BColeman%2C+Max+L%3BJohnson%2C+Clark+M&rft.aulast=Satkoski&rft.aufirst=Aaron&rft.date=2016-11-15&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ L2 - http://www.sciencedirect.com/science/journal/0012821X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 46 N1 - Document feature - illus. incl. geol. sketch map N1 - SuppNotes - Includes appendix N1 - Last updated - 2016-12-16 N1 - CODEN - EPSLA2 N1 - SubjectsTermNotLitGenreText - Africa; alkaline earth metals; alteration; Archean; Barberton greenstone belt; barite; continental crust; crust; Fig Tree Group; isotope ratios; isotopes; low temperature; mantle; metals; microorganisms; O-18/O-16; oxygen; Paleoarchean; paleoecology; Precambrian; S-34/S-32; sea water; South Africa; Southern Africa; Sr-87/Sr-86; stable isotopes; strontium; sulfates; sulfur; temperature; weathering; weathering rates DO - http://dx.doi.org/10.1016/j.epsl.2016.08.032 ER - TY - JOUR T1 - Evidence for impact induced pressure gradients on the Allende CV3 parent body; consequences for fluid and volatile transport AN - 1849307757; 2016-110886 AB - Carbonaceous chondrites, such as those associated with the Vigarano (CV) parent body, exhibit a diverse range of oxidative/reduced alteration mineralogy (McSween, 1977). Although fluids are often cited as the medium by which this occurs (Rubin, 2012), a mechanism to explain how this fluid migrates, and why some meteorite subtypes from the same planetary body are more oxidized than others remains elusive. In our study we examined a slab of the well-known Allende (CV3 (sub OxA) ) meteorite. Using several petrological techniques (e.g., Fry's and Flinn) and Computerized Tomography (CT) we discover it exhibits a strong penetrative planar fabric, resulting from strain partitioning among its major components: Calcium-Aluminum-rich Inclusions (CAIs) (64.5% (sub CT) ) > matrix (21.5% (sub Fry) ) > chondrules (17.6% (sub CT) ). In addition to the planar fabric, we found a strong lineation defined by the alignment of the maximum elongation of flattened particles interpreted to have developed by an impact event. The existence of a lineation could either be non-coaxial deformation, or the result of a mechanically heterogeneous target material. In the later case it could have formed due to discontinuous patches of sub-surface ice and/or fabrics developed through prior impact compaction (MacPherson and Krot, 2014), which would have encouraged preferential flow within the target material immediately following the impact, compacting pore spaces. We suggest that structurally controlled movement of alteration fluids in the asteroid parent body along pressure gradients contributed to the formation of secondary minerals, which may have ultimately lead to the different oxidized subtypes. JF - Earth and Planetary Science Letters AU - Tait, Alastair W AU - Fisher, Kent R AU - Srinivasan, Poorna AU - Simon, Justin I Y1 - 2016/11/15/ PY - 2016 DA - 2016 Nov 15 SP - 213 EP - 224 PB - Elsevier, Amsterdam VL - 454 SN - 0012-821X, 0012-821X KW - alteration KW - stony meteorites KW - strain KW - calcium-aluminum inclusions KW - fluid phase KW - preferential flow KW - CV chondrites KW - preferred orientation KW - Allende Meteorite KW - meteorites KW - transport KW - rheology KW - inclusions KW - heterogeneity KW - fabric KW - chondrites KW - pressure KW - secondary minerals KW - parent bodies KW - matrix KW - stress fields KW - carbonaceous chondrites KW - impacts KW - deformation KW - volatiles KW - chondrules KW - petrography KW - foliation KW - computed tomography data KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849307757?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Evidence+for+impact+induced+pressure+gradients+on+the+Allende+CV3+parent+body%3B+consequences+for+fluid+and+volatile+transport&rft.au=Tait%2C+Alastair+W%3BFisher%2C+Kent+R%3BSrinivasan%2C+Poorna%3BSimon%2C+Justin+I&rft.aulast=Tait&rft.aufirst=Alastair&rft.date=2016-11-15&rft.volume=454&rft.issue=&rft.spage=213&rft.isbn=&rft.btitle=&rft.title=Earth+and+Planetary+Science+Letters&rft.issn=0012821X&rft_id=info:doi/10.1016%2Fj.epsl.2016.09.015 L2 - http://www.sciencedirect.com/science/journal/0012821X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 51 N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Includes appendix N1 - Last updated - 2016-12-16 N1 - CODEN - EPSLA2 N1 - SubjectsTermNotLitGenreText - Allende Meteorite; alteration; calcium-aluminum inclusions; carbonaceous chondrites; chondrites; chondrules; computed tomography data; CV chondrites; deformation; fabric; fluid phase; foliation; heterogeneity; impacts; inclusions; matrix; meteorites; parent bodies; petrography; preferential flow; preferred orientation; pressure; rheology; secondary minerals; stony meteorites; strain; stress fields; transport; volatiles DO - http://dx.doi.org/10.1016/j.epsl.2016.09.015 ER - TY - JOUR T1 - Fluidized-sediment pipes in Gale Crater, Mars, and possible Earth analogs AN - 1849307740; 2016-110971 AB - Since landing in Gale crater, the Mars Science Laboratory rover Curiosity has traversed fluvial, lacustrine, and eolian sedimentary rocks that were deposited within the crater approximately 3.6 to 3.2 b.y. ago. Here we describe structures interpreted to be pipes formed by vertical movement of fluidized sediment. Like many pipes on Earth, those in Gale crater are more resistant to erosion than the host rock; they form near other pipes, dikes, or deformed sediment; and some contain internal concentric or eccentric layering. These structures provide new evidence of the importance of subsurface aqueous processes in shaping the near-surface geology of Mars. JF - Geology (Boulder) AU - Rubin, David M AU - Fairen, Alberto G AU - Martinez-Frias, J AU - Frydenvang, Jens AU - Gasnault, Olivier AU - Gelfenbaum, G AU - Goetz, W AU - Grotzinger, John P AU - Le Mouelic, S AU - Mangold, N AU - Newsom, H AU - Oehler, D Z AU - Rapin, William AU - Schieber, Juergen AU - Wiens, R C Y1 - 2016/11/03/ PY - 2016 DA - 2016 Nov 03 SP - 7 EP - 10 PB - Geological Society of America (GSA), Boulder, CO VL - 45 IS - 1 SN - 0091-7613, 0091-7613 KW - United States KW - processes KW - Colorado Plateau KW - Mars KW - Gale Crater KW - flows KW - terrestrial planets KW - case studies KW - planets KW - cylindrical structures KW - Curiosity Rover KW - sediments KW - Mars Science Laboratory KW - terrestrial comparison KW - fluidization KW - sedimentary structures KW - 06A:Sedimentary petrology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849307740?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Fluidized-sediment+pipes+in+Gale+Crater%2C+Mars%2C+and+possible+Earth+analogs&rft.au=Rubin%2C+David+M%3BFairen%2C+Alberto+G%3BMartinez-Frias%2C+J%3BFrydenvang%2C+Jens%3BGasnault%2C+Olivier%3BGelfenbaum%2C+G%3BGoetz%2C+W%3BGrotzinger%2C+John+P%3BLe+Mouelic%2C+S%3BMangold%2C+N%3BNewsom%2C+H%3BOehler%2C+D+Z%3BRapin%2C+William%3BSchieber%2C+Juergen%3BWiens%2C+R+C&rft.aulast=Rubin&rft.aufirst=David&rft.date=2016-11-03&rft.volume=45&rft.issue=1&rft.spage=7&rft.isbn=&rft.btitle=&rft.title=Geology+%28Boulder%29&rft.issn=00917613&rft_id=info:doi/10.1130%2FG38339.1 L2 - http://geology.gsapubs.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2017, 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 - 2016-01-01 N1 - Number of references - 36 N1 - PubXState - CO N1 - Document feature - illus. incl. 1 table, sketch map N1 - Last updated - 2017-01-19 N1 - CODEN - GLGYBA N1 - SubjectsTermNotLitGenreText - case studies; Colorado Plateau; Curiosity Rover; cylindrical structures; flows; fluidization; Gale Crater; Mars; Mars Science Laboratory; planets; processes; sedimentary structures; sediments; terrestrial comparison; terrestrial planets; United States DO - http://dx.doi.org/10.1130/G38339.1 ER - TY - JOUR T1 - The formation of Charon's red poles from seasonally cold-trapped volatiles AN - 1849307671; 2016-111033 JF - Nature (London) AU - Grundy, W M AU - Cruikshank, D P AU - Gladstone, G R AU - Howett, C J A AU - Lauer, T R AU - Spencer, John R AU - Summers, M E AU - Buie, Marc W AU - Earle, A M AU - Enrico, K AU - Parker, J W AU - Porter, S B AU - Singer, Kelsi N AU - Stern, S Alan AU - Verbiscer, A J AU - Beyer, R A AU - Binzel, R P AU - Buratti, B J AU - Cook, J C AU - Dalle Ore, C M AU - Olkin, C B AU - Parker, A H AU - Protopapa, S AU - Quirico, E AU - Retherford, K D AU - Robbins, Stuart J AU - Schmitt, B AU - Stansberry, John A AU - Umurhan, Orkan M AU - Weaver, H A AU - Young, L A AU - Zangari, A M AU - Bray, V J AU - Cheng, A F AU - McKinnon, W B AU - McNutt, R L, Jr AU - Moore, J M AU - Nimmo, F AU - Reuter, D C AU - Schenk, Paul M Y1 - 2016/11/03/ PY - 2016 DA - 2016 Nov 03 SP - 65 EP - 68 PB - Macmillan Journals, London VL - 538 IS - 7627 SN - 0028-0836, 0028-0836 KW - polar regions KW - patterns KW - dwarf planets KW - polar caps KW - infrared spectra KW - multispectral analysis KW - volatiles KW - organic compounds KW - surface features KW - hydrocarbons KW - Charon KW - spectra KW - satellites KW - Pluto KW - New Horizons Mission KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849307671?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+formation+of+Charon%27s+red+poles+from+seasonally+cold-trapped+volatiles&rft.au=Grundy%2C+W+M%3BCruikshank%2C+D+P%3BGladstone%2C+G+R%3BHowett%2C+C+J+A%3BLauer%2C+T+R%3BSpencer%2C+John+R%3BSummers%2C+M+E%3BBuie%2C+Marc+W%3BEarle%2C+A+M%3BEnrico%2C+K%3BParker%2C+J+W%3BPorter%2C+S+B%3BSinger%2C+Kelsi+N%3BStern%2C+S+Alan%3BVerbiscer%2C+A+J%3BBeyer%2C+R+A%3BBinzel%2C+R+P%3BBuratti%2C+B+J%3BCook%2C+J+C%3BDalle+Ore%2C+C+M%3BOlkin%2C+C+B%3BParker%2C+A+H%3BProtopapa%2C+S%3BQuirico%2C+E%3BRetherford%2C+K+D%3BRobbins%2C+Stuart+J%3BSchmitt%2C+B%3BStansberry%2C+John+A%3BUmurhan%2C+Orkan+M%3BWeaver%2C+H+A%3BYoung%2C+L+A%3BZangari%2C+A+M%3BBray%2C+V+J%3BCheng%2C+A+F%3BMcKinnon%2C+W+B%3BMcNutt%2C+R+L%2C+Jr%3BMoore%2C+J+M%3BNimmo%2C+F%3BReuter%2C+D+C%3BSchenk%2C+Paul+M&rft.aulast=Grundy&rft.aufirst=W&rft.date=2016-11-03&rft.volume=538&rft.issue=7627&rft.spage=65&rft.isbn=&rft.btitle=&rft.title=Nature+%28London%29&rft.issn=00280836&rft_id=info:doi/10.1038%2Fnature19340 L2 - http://www.nature.com/nature/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 29 N1 - Document feature - illus. incl. sketch map N1 - Last updated - 2016-12-16 N1 - CODEN - NATUAS N1 - SubjectsTermNotLitGenreText - Charon; dwarf planets; hydrocarbons; infrared spectra; multispectral analysis; New Horizons Mission; organic compounds; patterns; Pluto; polar caps; polar regions; satellites; spectra; surface features; volatiles DO - http://dx.doi.org/10.1038/nature19340 ER - TY - JOUR T1 - Ground surface temperature and humidity, ground temperature cycles and the ice table depths in University Valley, McMurdo dry valleys of Antarctica AN - 1863566608; 2017-008771 AB - In the upper McMurdo Dry Valleys, 90% of the measured ice table depths range from 0 to 80 cm; however, numerical models predict that the ice table is not in equilibrium with current climate conditions and should be deeper than measured. This study explored the effects of boundary conditions (air versus ground surface temperature and humidity), ground temperature cycles, and their diminishing amplitude with depth and advective flows (Darcy flow and wind pumping) on water vapor fluxes in soils and ice table depths using the REGO vapor diffusion model. We conducted a series of numerical experiments that illustrated different hypothetical scenarios and estimated the water vapor flux and ice table depth using the conditions in University Valley, a small high elevation valley. In situ measurements showed that while the mean annual ground surface temperature approximates that in the air, the mean annual ground surface relative humidity (>85% (sub ice) ) was significantly higher than in the atmosphere ( approximately 50% (sub ice) ). When ground surface temperature and humidity were used as boundary conditions, along with damping diurnal and annual temperature cycles within the sandy soil, REGO predicted that measured ice table depths in the valley were in equilibrium with contemporary conditions. Based on model results, a dry soil column can become saturated with ice within centuries. Overall, the results from the new soil data and modeling have implications regarding the factors and boundary conditions that affect the stability of ground ice in cold and hyperarid regions where liquid water is rare. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Earth Surface AU - Fisher, David A AU - Lacelle, Denis AU - Pollard, Wayne AU - Davila, Alfonso AU - McKay, Christopher P Y1 - 2016/11// PY - 2016 DA - November 2016 SP - 2069 EP - 2084 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 121 IS - 11 SN - 2169-9003, 2169-9003 KW - soils KW - cycles KW - University Valley KW - Quartermain Mountains KW - numerical models KW - dry valleys KW - periglacial features KW - depth KW - temperature KW - measurement KW - Antarctica KW - ice table KW - McMurdo dry valleys KW - Victoria Land KW - glacial geology KW - frozen ground KW - climate KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1863566608?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Ground+surface+temperature+and+humidity%2C+ground+temperature+cycles+and+the+ice+table+depths+in+University+Valley%2C+McMurdo+dry+valleys+of+Antarctica&rft.au=Fisher%2C+David+A%3BLacelle%2C+Denis%3BPollard%2C+Wayne%3BDavila%2C+Alfonso%3BMcKay%2C+Christopher+P&rft.aulast=Fisher&rft.aufirst=David&rft.date=2016-11-01&rft.volume=121&rft.issue=11&rft.spage=2069&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Earth+Surface&rft.issn=21699003&rft_id=info:doi/10.1002%2F2016JF004054 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9011/issues?year=2013 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2017-01-01 N1 - Number of references - 47 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table, sketch map N1 - Last updated - 2017-02-02 N1 - SubjectsTermNotLitGenreText - Antarctica; climate; cycles; depth; dry valleys; frozen ground; glacial geology; ice table; McMurdo dry valleys; measurement; numerical models; periglacial features; Quartermain Mountains; soils; temperature; University Valley; Victoria Land DO - http://dx.doi.org/10.1002/2016JF004054 ER - TY - JOUR T1 - A radiative transfer modeling approach for accurate interpretation of PAM fluorometry experiments in suspended algal cultures AN - 1859492664; PQ0003985214 AB - The results of a numerical study on the simulation of pulse amplitude modulated (PAM) fluorometry within dense suspensions of photosynthetic microorganisms are presented. The Monte Carlo method was used to solve the radiative transfer equation in an algae-filled cuvette, taking into account absorption, anisotropic scattering, and fluorescence, as well as Fresnel reflections at interfaces. This method was used to simulate the transport of excitation and fluorescence light in a common laboratory fluorometer. In this fluorometer, detected fluorescence originates from a multitude of locations within the algal suspension, which can be exposed to very different fluence rates. The fluorescence-weighted fluence rate is reported, which is the local fluence rate of actinic light, averaged over all locations from which detected fluorescence originated. A methodology is reported for recovering the fluorescence-weighted fluence rate as a function of the transmittance of measuring light and actinic light through the sample, which are easily measured with common laboratory fluorometers. The fluorescence-weighted fluence rate can in turn be used as a correction factor for recovering intrinsic physiological parameters, such as the functional cross section of Photosystem II, from apparent (experimental) values. [copy 2016 American Institute of Chemical Engineers Biotechnol. Prog., 32:1601-1615, 2016 JF - Biotechnology Progress AU - Murphy, Thomas E AU - Prufert-Bebout, Leslie E AU - Bebout, Brad M AD - Exobiology Dept, NASA Ames Research Center, Moffett Field, CA, 94035. Y1 - 2016/11// PY - 2016 DA - November 2016 SP - 1601 EP - 1608 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 32 IS - 6 SN - 8756-7938, 8756-7938 KW - Microbiology Abstracts C: Algology, Mycology & Protozoology; Biotechnology and Bioengineering Abstracts UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859492664?accountid=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=Biotechnology+Progress&rft.atitle=A+radiative+transfer+modeling+approach+for+accurate+interpretation+of+PAM+fluorometry+experiments+in+suspended+algal+cultures&rft.au=Murphy%2C+Thomas+E%3BPrufert-Bebout%2C+Leslie+E%3BBebout%2C+Brad+M&rft.aulast=Murphy&rft.aufirst=Thomas&rft.date=2016-11-01&rft.volume=32&rft.issue=6&rft.spage=1601&rft.isbn=&rft.btitle=&rft.title=Biotechnology+Progress&rft.issn=87567938&rft_id=info:doi/10.1002%2Fbtpr.2394 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2017-01-01 N1 - Last updated - 2017-02-01 DO - http://dx.doi.org/10.1002/btpr.2394 ER - TY - JOUR T1 - Investigating seasonal methane emissions in Northern California using airborne measurements and inverse modeling AN - 1855072484; PQ0003960407 AB - Seasonal methane (CH sub(4)) emissions in Northern California are evaluated during this study by using airborne measurement data and inverse model simulations. This research applies Alpha Jet Atmospheric eXperiment (AJAX) measurements obtained during January-February 2013, July 2014, and October-November 2014 over the San Francisco Bay Area (SFBA) and northern San Joaquin Valley (SJV) in order to constrain seasonal CH sub(4) emissions in Northern California. The California Greenhouse Gas Emissions Measurement (CALGEM) a priori emission inventory was applied in conjunction with the Weather Research and Forecasting and Stochastic Time-Inverted Lagrangian Transport model and inverse modeling techniques to optimize CH sub(4) emissions. Comparing model-predicted CH sub(4) mixing ratios with airborne measurements, we find substantial underestimates suggesting that CH sub(4) emissions were likely larger than the year 2008 a priori CALGEM emission inventory in Northern California. Using AJAX measurements to optimize a priori emissions resulted in CH sub(4) flux estimates from the SFBA/SJV of 1.77 plus or minus 0.41, 0.83 plus or minus 0.31, and 1.06 plus or minus 0.39Tgyr super(-1) when using winter, summer, and fall flight data, respectively. Averaging seasonal a posteriori emission estimates (weighted by posterior uncertainties) results in SFBA/SJV annual CH sub(4) emissions of 1.28 plus or minus 0.38Tgyr super(-1). A posteriori uncertainties are reduced more effectively in the SFBA/SJV region compared to state-wide values indicating that the airborne measurements are most sensitive to emissions in this region. A posteriori estimates during this study suggest that dairy livestock was the source with the largest increase relative to the a priori CALGEM emission inventory during all seasons. Key Points * Airborne measurements are used to constrain source apportioned methane (CH sub(4)) emissions in Northern California * Seasonal measurements resulted in SFBA/SJV CH sub(4) emission estimates ranging from 0.83 plus or minus 0.31 to 1.77 plus or minus 0.41Tgyr super(-1) * Emission estimates suggest that existing bottom-up CH sub(4) emission inventories may underestimate fluxes in California JF - Journal of Geophysical Research: Atmospheres AU - Johnson, Matthew S AU - Xi, Xin AU - Jeong, Seongeun AU - Yates, Emma L AU - Iraci, Laura T AU - Tanaka, Tomoaki AU - Loewenstein, Max AU - Tadic, Jovan M AU - Fischer, Marc L AD - Earth Science Division, NASA Ames Research Center, Moffett Field, California, USA. Y1 - 2016/11// PY - 2016 DA - November 2016 SP - 13 EP - 13,767 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 121 IS - 22 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1855072484?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=Investigating+seasonal+methane+emissions+in+Northern+California+using+airborne+measurements+and+inverse+modeling&rft.au=Johnson%2C+Matthew+S%3BXi%2C+Xin%3BJeong%2C+Seongeun%3BYates%2C+Emma+L%3BIraci%2C+Laura+T%3BTanaka%2C+Tomoaki%3BLoewenstein%2C+Max%3BTadic%2C+Jovan+M%3BFischer%2C+Marc+L&rft.aulast=Johnson&rft.aufirst=Matthew&rft.date=2016-11-01&rft.volume=121&rft.issue=22&rft.spage=13&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2016JD025157 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2017-01-01 N1 - Last updated - 2017-01-04 DO - http://dx.doi.org/10.1002/2016JD025157 ER - TY - JOUR T1 - Formaldehyde column density measurements as a suitable pathway to estimate near-surface ozone tendencies from space AN - 1850773565; PQ0003929193 AB - In support of future satellite missions that aim to address the current shortcomings in measuring air quality from space, NASA's Deriving Information on Surface Conditions from Column and Vertically Resolved Observations Relevant to Air Quality (DISCOVER-AQ) field campaign was designed to enable exploration of relationships between column measurements of trace species relevant to air quality at high spatial and temporal resolution. In the DISCOVER-AQ data set, a modest correlation (r super(2)=0.45) between ozone (O sub(3)) and formaldehyde (CH sub(2)O) column densities was observed. Further analysis revealed regional variability in the O sub(3)-CH sub(2)O relationship, with Maryland having a strong relationship when data were viewed temporally and Houston having a strong relationship when data were viewed spatially. These differences in regional behavior are attributed to differences in volatile organic compound (VOC) emissions. In Maryland, biogenic VOCs were responsible for ~28% of CH sub(2)O formation within the boundary layer column, causing CH sub(2)O to, in general, increase monotonically throughout the day. In Houston, persistent anthropogenic emissions dominated the local hydrocarbon environment, and no discernable diurnal trend in CH sub(2)O was observed. Box model simulations suggested that ambient CH sub(2)O mixing ratios have a weak diurnal trend ( plus or minus 20% throughout the day) due to photochemical effects, and that larger diurnal trends are associated with changes in hydrocarbon precursors. Finally, mathematical relationships were developed from first principles and were able to replicate the different behaviors seen in Maryland and Houston. While studies would be necessary to validate these results and determine the regional applicability of the O sub(3)-CH sub(2)O relationship, the results presented here provide compelling insight into the ability of future satellite missions to aid in monitoring near-surface air quality. Key Points * A correlation between column CH sub(2)O and near-surface O sub(3) measurements was observed and could be useful for monitoring air quality from space * The strength of the correlation between column CH sub(2)O and near-surface O sub(3) is highest when there is temporal variability in CH sub(2)O * The O sub(3)-CH sub(2)O relationship appears to be strongest in regions where emissions of biogenic VOCs dominate the local hydrocarbon mix JF - Journal of Geophysical Research: Atmospheres AU - Schroeder, Jason R AU - Crawford, James H AU - Fried, Alan AU - Walega, James AU - Weinheimer, Andrew AU - Wisthaler, Armin AU - Mueller, Markus AU - Mikoviny, Tomas AU - Chen, Gao AU - Shook, Michael AU - Blake, Donald R AU - Diskin, Glenn AU - Estes, Mark AU - Thompson, Anne M AU - Lefer, Barry L AU - Long, Russell AU - Mattson, Eric AD - NASA Langley Research Center, Hampton, Virginia, USA. Y1 - 2016/11// PY - 2016 DA - November 2016 SP - 13 EP - 13,112 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 121 IS - 21 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Remote Sensing KW - Photochemistry KW - Satellite Technology KW - Variability KW - Hydrocarbons KW - Temporal variations KW - Density KW - Anthropogenic factors KW - Environmental factors KW - Spatial variations KW - Exploration KW - Density measurement KW - Mixing ratio KW - Organic Compounds KW - Organic compounds KW - Monitoring KW - Ozone KW - SW 0810:General KW - Q2 09105:Research programmes and expeditions UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1850773565?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=Formaldehyde+column+density+measurements+as+a+suitable+pathway+to+estimate+near-surface+ozone+tendencies+from+space&rft.au=Schroeder%2C+Jason+R%3BCrawford%2C+James+H%3BFried%2C+Alan%3BWalega%2C+James%3BWeinheimer%2C+Andrew%3BWisthaler%2C+Armin%3BMueller%2C+Markus%3BMikoviny%2C+Tomas%3BChen%2C+Gao%3BShook%2C+Michael%3BBlake%2C+Donald+R%3BDiskin%2C+Glenn%3BEstes%2C+Mark%3BThompson%2C+Anne+M%3BLefer%2C+Barry+L%3BLong%2C+Russell%3BMattson%2C+Eric&rft.aulast=Schroeder&rft.aufirst=Jason&rft.date=2016-11-01&rft.volume=121&rft.issue=21&rft.spage=13&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2016JD025419 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-12-01 N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Photochemistry; Spatial variations; Temporal variations; Anthropogenic factors; Mixing ratio; Density measurement; Organic compounds; Environmental factors; Ozone; Remote Sensing; Satellite Technology; Variability; Hydrocarbons; Density; Exploration; Organic Compounds; Monitoring DO - http://dx.doi.org/10.1002/2016JD025419 ER - TY - JOUR T1 - The paleoclimate context and future trajectory of extreme summer hydroclimate in eastern Australia AN - 1850772572; PQ0003929186 AB - Eastern Australia recently experienced an intense drought (Millennium Drought, 2003-2009) and record-breaking rainfall and flooding (austral summer 2010-2011). There is some limited evidence for a climate change contribution to these events, but such analyses are hampered by the paucity of information on long-term natural variability. Analyzing a new reconstruction of summer (December-January-February) Palmer Drought Severity Index (the Australia-New Zealand Drought Atlas; ANZDA, 1500-2012 Common Era), we find moisture deficits during the Millennium Drought fall within the range of the last 500 years of natural hydroclimate variability. This variability includes periods of multidecadal drought in the 1500s more persistent than any event in the historical record. However, the severity of the Millennium Drought, which was caused by autumn (March-April-May) precipitation declines, may be underestimated in the ANZDA because the reconstruction is biased toward summer and antecedent spring (September-October-November) precipitation. The pluvial in 2011, however, which was characterized by extreme summer rainfall faithfully captured by the ANZDA, is likely the wettest year in the reconstruction for Coastal Queensland. Climate projections (Representative Concentration Pathways (RCP) 8.5 scenario) suggest that eastern Australia will experience long-term drying during the 21st century. While the contribution of anthropogenic forcing to recent extremes remains an open question, these projections indicate an amplified risk of multiyear drought anomalies matching or exceeding the intensity of the Millennium Drought. Key Points * Recent extremes (the Millennium Drought and 2011 pluvial) are compared to a 500-year soil moisture reconstruction * 2011 was likely the wettest year in the record for Coastal Queensland * Climate projections indicate substantially increased risk of droughts greater than or equal to the magnitude of the Millennium Drought JF - Journal of Geophysical Research: Atmospheres AU - Cook, Benjamin I AU - Palmer, Jonathan G AU - Cook, Edward R AU - Turney, Chris SM AU - Allen, Kathryn AU - Fenwick, Pavla AU - O'Donnell, Alison AU - Lough, Janice M AU - Grierson, Pauline F AU - Ho, Michelle AU - Baker, Patrick J AD - NASA Goddard Institute for Space Studies, New York, New York, USA. Y1 - 2016/11// PY - 2016 DA - November 2016 SP - 12 EP - 12,838 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 121 IS - 21 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Atmospheric precipitations KW - Variability KW - Rainfall KW - Climates KW - Climate KW - Climate change KW - Drying KW - Drought KW - Precipitation KW - Palaeoclimate KW - Hydroclimate KW - Soils KW - Flooding KW - Droughts KW - SW 0810:General KW - Q2 09105:Research programmes and expeditions UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1850772572?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=The+paleoclimate+context+and+future+trajectory+of+extreme+summer+hydroclimate+in+eastern+Australia&rft.au=Cook%2C+Benjamin+I%3BPalmer%2C+Jonathan+G%3BCook%2C+Edward+R%3BTurney%2C+Chris+SM%3BAllen%2C+Kathryn%3BFenwick%2C+Pavla%3BO%27Donnell%2C+Alison%3BLough%2C+Janice+M%3BGrierson%2C+Pauline+F%3BHo%2C+Michelle%3BBaker%2C+Patrick+J&rft.aulast=Cook&rft.aufirst=Benjamin&rft.date=2016-11-01&rft.volume=121&rft.issue=21&rft.spage=12&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2016JD024892 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-12-01 N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Atmospheric precipitations; Climate change; Soils; Climate; Hydroclimate; Flooding; Drying; Palaeoclimate; Droughts; Variability; Rainfall; Climates; Precipitation; Drought DO - http://dx.doi.org/10.1002/2016JD024892 ER - TY - JOUR T1 - Phosphate minerals in the H group of ordinary chondrites, and fluid activity recorded by apatite heterogeneity in the Zag H3-6 regolith breccia AN - 1849308378; 2016-110938 AB - Phosphate minerals in ordinary chondrites provide a record of fluids that were present during metamorphic heating of the chondrite parent asteroids. We have carried out a petrographic study of the phosphate minerals, merrillite and apatite, in metamorphosed H group ordinary chondrites of petrologic type 4-6, to understand development of phosphate minerals and associated fluid evolution during metamorphism. In unbrecciated chondrites, apatite is Cl rich and shows textural evolution from fine-grained apatite-merrillite assemblages in type 4 toward larger, uniform grains in type 6. The Cl/F ratio in apatite shows a similar degree of heterogeneity in all petrologic types, and no systematic change in compositions with metamorphic grade, which suggests that compositions in each meteorite are dictated by localized conditions, possibly because of a limited fluid/rock ratio. The development of phosphate minerals in H chondrites is similar to that of L and LL chondrites, despite the fact that feldspar equilibration resulting from albitization is complete in H4 chondrites but not in L4 or LL4 chondrites. This suggests that albitization took place during an earlier period of the metamorphic history than that recorded by preserved apatite compositions, and chemical equilibrium was not achieved throughout the H chondrite parent body or bodies during the late stages of metamorphism. A relict igneous clast in the H5 chondrite, Oro Grande has apatite rims on relict phenocrysts of (possibly) diopside that have equilibrated with the host chondrite. Apatite in the Zag H3-6 regolith breccia records a complex fluid history, which is likely related to the presence of halite in this meteorite. The porous dark H4 matrix of Zag, where halite is observed, has a high apatite/merrillite ratio, and apatite is extremely Cl rich. One light H6 clast contains similarly Cl-rich apatite. In a second light H6 clast, apatite compositions are very heterogeneous and more F-rich. Apatites in both H4 matrix and H6 clasts have very low H (sub 2) O contents. Heterogeneous apatite compositions in Zag record multiple stages of regolith processing and shock at the surface of the H chondrite parent body, and apatite records either the passage of fluids of variable compositions resulting from different impact-related processes, or the passage of a single fluid whose composition evolved as it interacted with the chondrite regolith. Unraveling the history of apatite can potentially help to interpret the internal structure of chondrite parent bodies, with implications for physical and mechanical properties of chondritic asteroids. The behavior of halogens recorded by apatite is important for understanding the behavior of volatile elements in general: if impact-melt materials close to the surface of a chondritic asteroid are readily degassed, the volatile inventories of terrestrial planets could be considerably more depleted than the CI carbonaceous chondrite abundances that are commonly assumed. JF - American Mineralogist AU - Jones, Rhian H AU - Mccubbin, Francis M AU - Guan, Yunbin Y1 - 2016/11// PY - 2016 DA - November 2016 SP - 2452 EP - 2467 PB - Mineralogical Society of America, Washington, DC VL - 101 IS - 11 SN - 0003-004X, 0003-004X KW - Zag Meteorite KW - water KW - Oro Grande Meteorite KW - apatite KW - ordinary chondrites KW - Estacado Meteorite KW - breccia KW - stony meteorites KW - fluid phase KW - phosphates KW - H chondrites KW - carbonaceous chondrites KW - meteorites KW - merrillite KW - chlorapatite KW - Avanhandava Meteorite KW - Richardton Meteorite KW - heterogeneity KW - chondrites KW - regolith KW - 05B:Petrology of meteorites and tektites KW - 01C:Mineralogy of non-silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849308378?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/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=Phosphate+minerals+in+the+H+group+of+ordinary+chondrites%2C+and+fluid+activity+recorded+by+apatite+heterogeneity+in+the+Zag+H3-6+regolith+breccia&rft.au=Jones%2C+Rhian+H%3BMccubbin%2C+Francis+M%3BGuan%2C+Yunbin&rft.aulast=Jones&rft.aufirst=Rhian&rft.date=2016-11-01&rft.volume=101&rft.issue=11&rft.spage=2452&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam-2016-5728 L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2016-01-01 N1 - Number of references - 55 N1 - PubXState - DC N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2016-12-16 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - apatite; Avanhandava Meteorite; breccia; carbonaceous chondrites; chlorapatite; chondrites; Estacado Meteorite; fluid phase; H chondrites; heterogeneity; merrillite; meteorites; ordinary chondrites; Oro Grande Meteorite; phosphates; regolith; Richardton Meteorite; stony meteorites; water; Zag Meteorite DO - http://dx.doi.org/10.2138/am-2016-5728 ER - TY - JOUR T1 - The Relationship between Boundary Layer Stability and Cloud Cover in the Post-Cold-Frontal Region AN - 1846404100; PQ0003820290 AB - Using NASA Aqua MODIS and AIRS data, the relationship between low-level cloud cover (cloud top below the 700-hPa level) and boundary layer stability is explored in post-cold-frontal conditions. A linear relationship is found between seasonal cloud cover and two separate measures of inversion strength, the lower-tropospheric stability (LTS) and the estimated inversion strength (EIS), for two specific regions in the North Atlantic and Pacific in quiescent and weakly subsiding conditions. The relationship barely changes when considering dynamically active and subsiding post-cold-frontal conditions for the same regions. To explore the generality of this result and increase sample size, cold-front-centered composites of cloud cover and stability are constructed. The Northern and Southern Hemisphere seasonal cloud cover and stability distributions in the post-cold-frontal regions are then compared. A fairly good correlation between cloud cover and EIS is found in both hemispheres across all seasons, suggesting that a linear relationship between cloud cover and inversion strength proposed for quiescent conditions exists also in more dynamically active subsiding post-cold-frontal conditions. However, for a given season and hemisphere, the correlation between cloud cover and EIS degrades in post-cold-frontal regions, especially in the Northern Hemisphere. At these scales, other large-scale factors tend to correlate better with cloud cover. JF - Journal of Climate AU - Naud, Catherine M AU - Booth, James F AU - Del Genio, Anthony D AD - Applied Physics and Applied Mathematics, Columbia University, and NASA GISS, New York, New York Y1 - 2016/11// PY - 2016 DA - November 2016 SP - 8129 EP - 8149 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 29 IS - 22 SN - 0894-8755, 0894-8755 KW - Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Boundary layer stability KW - Boundary Layers KW - Correlations KW - Seasonal variability KW - MODIS (Moderate Resolution Imaging Spectrometer) KW - IN, Pacific KW - Climates KW - Climate KW - Cloud Cover KW - Cloud cover KW - AN, North Atlantic KW - Inversions KW - Clouds KW - Strength KW - Satellite data KW - Boundary layers KW - AQ 00001:Water Resources and Supplies KW - SW 0810:General KW - M2 551.58:Climatology (551.58) KW - Q2 09244:Air-sea coupling UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1846404100?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Climate&rft.atitle=The+Relationship+between+Boundary+Layer+Stability+and+Cloud+Cover+in+the+Post-Cold-Frontal+Region&rft.au=Naud%2C+Catherine+M%3BBooth%2C+James+F%3BDel+Genio%2C+Anthony+D&rft.aulast=Naud&rft.aufirst=Catherine&rft.date=2016-11-01&rft.volume=29&rft.issue=22&rft.spage=8129&rft.isbn=&rft.btitle=&rft.title=Journal+of+Climate&rft.issn=08948755&rft_id=info:doi/http%3A%2F%2Fdx.doi.org%2F10.1175%2FJCLI-D-15-0700.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-12-01 N1 - Number of references - 39 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Boundary layers; Climate; Cloud cover; Inversions; Clouds; Satellite data; Boundary layer stability; Correlations; MODIS (Moderate Resolution Imaging Spectrometer); Seasonal variability; Strength; Climates; Boundary Layers; Cloud Cover; IN, Pacific; AN, North Atlantic DO - http://dx.doi.org/10.1175/JCLI-D-15-0700.1 ER - TY - JOUR T1 - High-resolution WRF simulation of cloud properties over the super typhoon Haiyan: physics parameterizations and comparison against MODIS AN - 1837332611; PQ0003750180 AB - Numerical weather prediction (NWP) models can complement the satellite technology in simulating the cloud properties, especially in extreme storm events, when gathering new data becomes more than essential for accurate weather forecasting. In this study, we investigate the capability of the Weather Research and Forecasting (WRF) model to realistically simulate some important cloud properties in high-resolution grids, such as cloud phase (e.g., liquid or ice) and cloud water path. The sensitivity of different combinations of physics parameterizations to the simulated cloud fields is studied. The experiment is conducted on a super typhoon event by configuring the WRF model in two domains, with two-way nesting, allowing bidirectional information exchange between the parent and the nest. In order to do the assessment, the simulated cloud fields are compared against MODIS-derived cloud properties from one overpass scene. While the simulations have been able to capture the spatial distribution of cloud properties reasonably well, produced cloud quantities such as ice water path has been significantly overestimated when compared to the MODIS optical cloud information. The microphysics parameterizations are found to be more sensitive than the planetary boundary layer (PBL) parameterizations. JF - Theoretical and Applied Climatology AU - Islam, Tanvir AU - Srivastava, Prashant K AU - Dai, Qiang AD - NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA, tanvir.islam@jpl.nasa.gov Y1 - 2016/11// PY - 2016 DA - November 2016 SP - 427 EP - 435 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 126 IS - 3-4 SN - 0177-798X, 0177-798X KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts; Oceanic Abstracts; Meteorological & Geoastrophysical Abstracts KW - Prediction KW - Spatial distribution KW - Weather Forecasting KW - Storms KW - Applied climatology KW - Nesting KW - Cloud properties KW - MODIS (Moderate Resolution Imaging Spectrometer) KW - Climatology KW - Atmospheric boundary layer KW - Weather forecasting KW - Modelling KW - Ice KW - Weather KW - Mathematical models KW - Simulation Analysis KW - Water content of clouds KW - Numerical forecasting models KW - Simulation KW - Clouds KW - Hurricanes KW - Satellite data KW - Numerical simulations KW - Boundary layers KW - Typhoons KW - AQ 00001:Water Resources and Supplies KW - SW 0810:General KW - O 4080:Pollution - Control and Prevention KW - Q2 09105:Research programmes and expeditions KW - M2 551.509.1/.5:Forecasting (551.509.1/.5) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1837332611?accountid=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=Theoretical+and+Applied+Climatology&rft.atitle=High-resolution+WRF+simulation+of+cloud+properties+over+the+super+typhoon+Haiyan%3A+physics+parameterizations+and+comparison+against+MODIS&rft.au=Islam%2C+Tanvir%3BSrivastava%2C+Prashant+K%3BDai%2C+Qiang&rft.aulast=Islam&rft.aufirst=Tanvir&rft.date=2016-11-01&rft.volume=126&rft.issue=3-4&rft.spage=427&rft.isbn=&rft.btitle=&rft.title=Theoretical+and+Applied+Climatology&rft.issn=0177798X&rft_id=info:doi/10.1007%2Fs00704-015-1575-y LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-11-01 N1 - Number of references - 27 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Prediction; Clouds; Hurricanes; Mathematical models; Boundary layers; Simulation; Climatology; Weather forecasting; Modelling; Applied climatology; Satellite data; Spatial distribution; Numerical simulations; Water content of clouds; Numerical forecasting models; MODIS (Moderate Resolution Imaging Spectrometer); Cloud properties; Atmospheric boundary layer; Storms; Weather; Ice; Simulation Analysis; Nesting; Weather Forecasting; Typhoons DO - http://dx.doi.org/10.1007/s00704-015-1575-y ER - TY - JOUR T1 - The effect of dust on the Martian polar vortices AN - 1832727553; 2016-092638 AB - The influence of atmospheric dust on the dynamics and stability of the martian polar vortices is examined, through analysis of Mars Climate Sounder observations and MarsWRF general circulation model simulations. We show that regional and global dust storms produce "transient vortex warming" events that partially or fully disrupt the northern winter polar vortex for brief periods. Increased atmospheric dust heating alters the Hadley circulation and shifts the downwelling branch of the circulation poleward, leading to a disruption of the polar vortex for a period of days to weeks. Through our simulations, we find this effect is dependent on the atmospheric heating rate, which can be changed by increasing the amount of dust in the atmosphere or by altering the dust optical properties (e.g., single scattering albedo). Despite this, our simulations show that some level of atmospheric dust is necessary to produce a distinct northern hemisphere winter polar vortex. JF - Icarus AU - Guzewich, Scott D AU - Toigo, A D AU - Waugh, D W Y1 - 2016/11/01/ PY - 2016 DA - 2016 Nov 01 SP - 100 EP - 118 PB - Elsevier, New York, NY VL - 278 SN - 0019-1035, 0019-1035 KW - Mars KW - simulation KW - temperature KW - polar vortices KW - atmospheric circulation KW - dynamics KW - sediments KW - opacity KW - dust storms KW - general circulation models KW - polar regions KW - clastic sediments KW - Mars Climate Sounder KW - atmosphere KW - Mars Reconnaissance Orbiter KW - vorticity KW - terrestrial planets KW - models KW - planets KW - optical properties KW - transient phenomena KW - downwelling KW - eddies KW - dust KW - seasonal variations KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832727553?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+effect+of+dust+on+the+Martian+polar+vortices&rft.au=Guzewich%2C+Scott+D%3BToigo%2C+A+D%3BWaugh%2C+D+W&rft.aulast=Guzewich&rft.aufirst=Scott&rft.date=2016-11-01&rft.volume=278&rft.issue=&rft.spage=100&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.06.009 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 45 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2016-10-27 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - atmosphere; atmospheric circulation; clastic sediments; downwelling; dust; dust storms; dynamics; eddies; general circulation models; Mars; Mars Climate Sounder; Mars Reconnaissance Orbiter; models; opacity; optical properties; planets; polar regions; polar vortices; seasonal variations; sediments; simulation; temperature; terrestrial planets; transient phenomena; vorticity DO - http://dx.doi.org/10.1016/j.icarus.2016.06.009 ER - TY - JOUR T1 - PolarBRDF: A general purpose Python package for visualization and quantitative analysis of multi-angular remote sensing measurements AN - 1832622456; 783952-16 AB - The Bidirectional Reflectance Distribution Function (BRDF) is a fundamental concept for characterizing the reflectance property of a surface, and helps in the analysis of remote sensing data from satellite, airborne and surface platforms. Multi-angular remote sensing measurements are required for the development and evaluation of BRDF models for improved characterization of surface properties. However, multi-angular data and the associated BRDF models are typically multidimensional involving multi-angular and multi-wavelength information. Effective visualization of such complex multidimensional measurements for different wavelength combinations is presently somewhat lacking in the literature, and could serve as a potentially useful research and teaching tool in aiding both interpretation and analysis of BRDF measurements. This article describes a newly developed software package in Python (PolarBRDF) to help visualize and analyze multi-angular data in polar and False Color Composite (FCC) forms. PolarBRDF also includes functionalities for computing important multi-angular reflectance/albedo parameters including spectral albedo, principal plane reflectance and spectral reflectance slope. Application of PolarBRDF is demonstrated using various case studies obtained from airborne multi-angular remote sensing measurements using NASA's Cloud Absorption Radiometer (CAR). Our visualization program also provides functionalities for untangling complex surface/atmosphere features embedded in pixel-based remote sensing measurements, such as the FCC imagery generation of BRDF measurements of grasslands in the presence of wildfire smoke and clouds. Furthermore, PolarBRDF also provides quantitative information of the angular distribution of scattered surface/atmosphere radiation, in the form of relevant BRDF variables such as sunglint, hotspot and scattering statistics. JF - Computers & Geosciences AU - Singh, Manoj K AU - Gautam, Ritesh AU - Gatebe, Charles K AU - Poudyal, Rajesh Y1 - 2016/11// PY - 2016 DA - November 2016 SP - 173 EP - 180 PB - Elsevier, Amsterdam VL - 96 SN - 0098-3004, 0098-3004 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832622456?accountid=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=Computers+%26+Geosciences&rft.atitle=PolarBRDF%3A+A+general+purpose+Python+package+for+visualization+and+quantitative+analysis+of+multi-angular+remote+sensing+measurements&rft.au=Singh%2C+Manoj+K%3BGautam%2C+Ritesh%3BGatebe%2C+Charles+K%3BPoudyal%2C+Rajesh&rft.aulast=Singh&rft.aufirst=Manoj&rft.date=2016-11-01&rft.volume=96&rft.issue=&rft.spage=173&rft.isbn=&rft.btitle=&rft.title=Computers+%26+Geosciences&rft.issn=00983004&rft_id=info:doi/10.1016%2Fj.cageo.2016.08.015 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 in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Last updated - 2017-01-24 N1 - CODEN - GGEOD5 DO - http://dx.doi.org/10.1016/j.cageo.2016.08.015 ER - TY - JOUR T1 - Gravity field of the Orientale Basin from the Gravity Recovery and Interior Laboratory Mission AN - 1849308237; 2016-111046 AB - The Orientale basin is the youngest and best-preserved major impact structure on the Moon. We used the Gravity Recovery and Interior Laboratory (GRAIL) spacecraft to investigate the gravitational field of Orientale at 3- to 5-kilometer (km) horizontal resolution. A volume of at least (3.4 + or - 0.2) X 10 (super 6) km (super 3) of crustal material was removed and redistributed during basin formation. There is no preserved evidence of the transient crater that would reveal the basin's maximum volume, but its diameter may now be inferred to be between 320 and 460 km. The gravity field resolves distinctive structures of Orientale's three rings and suggests the presence of faults associated with the outer two that penetrate to the mantle. The crustal structure of Orientale provides constraints on the formation of multiring basins. JF - Science AU - Zuber, Maria T AU - Smith, David E AU - Neumann, Gregory A AU - Goossens, Sander AU - Andrews-Hanna, Jeffrey C AU - Head, James W AU - Kiefer, Walter S AU - Asmar, Sami W AU - Konopliv, Alexander S AU - Lemoine, Frank G AU - Matsuyama, Isamu AU - Melosh, H Jay AU - McGovern, Patrick J AU - Nimmo, Francis AU - Phillips, Roger J AU - Solomon, Sean C AU - Taylor, G Jeffrey AU - Watkins, Michael M AU - Wieczorek, Mark A AU - Williams, James G AU - Jansen, Johanna C AU - Johnson, Brandon C AU - Keane, James T AU - Mazarico, Erwan AU - Miljkovic, Katarina AU - Park, Ryan S AU - Soderblom, Jason M AU - Yuan, Dah-Ning Y1 - 2016/10/28/ PY - 2016 DA - 2016 Oct 28 SP - 438 EP - 441 PB - American Association for the Advancement of Science, Washington, DC VL - 354 IS - 6311 SN - 0036-8075, 0036-8075 KW - impact features KW - free-air anomalies KW - Moon KW - GRAIL Mission KW - mantle KW - mapping KW - melts KW - gravity anomalies KW - gravity field KW - lunar interior KW - lunar crust KW - Orientale Basin KW - thickness KW - Bouguer anomalies KW - impact craters KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849308237?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+Orientale+Basin+from+the+Gravity+Recovery+and+Interior+Laboratory+Mission&rft.au=Zuber%2C+Maria+T%3BSmith%2C+David+E%3BNeumann%2C+Gregory+A%3BGoossens%2C+Sander%3BAndrews-Hanna%2C+Jeffrey+C%3BHead%2C+James+W%3BKiefer%2C+Walter+S%3BAsmar%2C+Sami+W%3BKonopliv%2C+Alexander+S%3BLemoine%2C+Frank+G%3BMatsuyama%2C+Isamu%3BMelosh%2C+H+Jay%3BMcGovern%2C+Patrick+J%3BNimmo%2C+Francis%3BPhillips%2C+Roger+J%3BSolomon%2C+Sean+C%3BTaylor%2C+G+Jeffrey%3BWatkins%2C+Michael+M%3BWieczorek%2C+Mark+A%3BWilliams%2C+James+G%3BJansen%2C+Johanna+C%3BJohnson%2C+Brandon+C%3BKeane%2C+James+T%3BMazarico%2C+Erwan%3BMiljkovic%2C+Katarina%3BPark%2C+Ryan+S%3BSoderblom%2C+Jason+M%3BYuan%2C+Dah-Ning&rft.aulast=Zuber&rft.aufirst=Maria&rft.date=2016-10-28&rft.volume=354&rft.issue=6311&rft.spage=438&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.aag0519 L2 - http://www.sciencemag.org/magazine LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 40 N1 - PubXState - DC N1 - Document feature - illus. incl. sects., geol. sketch maps N1 - Last updated - 2016-12-16 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - Bouguer anomalies; free-air anomalies; GRAIL Mission; gravity anomalies; gravity field; impact craters; impact features; lunar crust; lunar interior; mantle; mapping; melts; Moon; Orientale Basin; remote sensing; thickness DO - http://dx.doi.org/10.1126/science.aag0519 ER - TY - JOUR T1 - The viscosity of planetary tholeiitic melts; a configurational entropy model AN - 1840615309; 2016-094166 AB - The viscosity (eta ) of silicate melts is a fundamental physical property controlling mass transfer in magmatic systems. Viscosity can span many orders of magnitude, strongly depending on temperature and composition. Several models are available that describe this dependency for terrestrial melts quite well. Planetary basaltic lavas however are distinctly different in composition, being dominantly alkali-poor, iron-rich and/or highly magnesian. We measured the viscosity of 20 anhydrous tholeiitic melts, of which 15 represent known or estimated surface compositions of Mars, Mercury, the Moon, Io and Vesta, by concentric cylinder and parallel plate viscometry. The planetary basalts span a viscosity range of 2 orders of magnitude at liquidus temperatures and 4 orders of magnitude near the glass transition, and can be more or less viscous than terrestrial lavas. We find that current models under- and overestimate superliquidus viscosities by up to 2 orders of magnitude for these compositions, and deviate even more strongly from measured viscosities toward the glass transition. We used the Adam-Gibbs theory (A-G) to relate viscosity (eta ) to absolute temperature (T) and the configurational entropy of the system at that temperature (S (super conf) ), which is in the form of logeta = A (sub e) +B (sub e) /TS (super conf) . Heat capacities (C (sub P) ) for glasses and liquids of our investigated compositions were calculated via available literature models. We show that the A-G theory is applicable to model the viscosity of individual complex tholeiitic melts containing 10 or more major oxides as well or better than the commonly used empirical equations. We successfully modeled the global viscosity data set using a constant A (sub e) of -3.34 + or - 0.22 log units and 12 adjustable sub-parameters, which capture the compositional and temperature dependence on melt viscosity. Seven sub-parameters account for the compositional dependence of B (sub e) and 5 for S (super conf) . Our model reproduces the 496 measured viscosity data points with a 1sigma root-mean-square deviation (rmsd) of 0.12 log units across 13 orders of measured melt viscosity. The model performed well in predicting the viscosity of lunar and martian melts not used in calibration, and should be used to calculate lava flow velocities and fluxes for anhydrous basaltic volcanism on other moons and planets. JF - Geochimica et Cosmochimica Acta AU - Sehlke, Alexander AU - Whittington, Alan G Y1 - 2016/10/15/ PY - 2016 DA - 2016 Oct 15 SP - 277 EP - 299 PB - Elsevier, New York, NY VL - 191 SN - 0016-7037, 0016-7037 KW - near-infrared spectra KW - tholeiitic basalt KW - volcanic rocks KW - asteroids KW - igneous rocks KW - entropy KW - calibration KW - melts KW - temperature KW - tholeiitic composition KW - movement KW - basalts KW - velocity KW - spectra KW - geochemistry KW - calorimetry KW - liquid phase KW - solar system KW - lava flows KW - Vesta Asteroid KW - Moon KW - silicate melts KW - Adam-Gibbs theory KW - prediction KW - cosmochemistry KW - maria KW - X-ray spectra KW - EDS spectra KW - models KW - planets KW - KREEP KW - viscosity KW - lava KW - magmas KW - mathematical methods KW - 04:Extraterrestrial geology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840615309?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+viscosity+of+planetary+tholeiitic+melts%3B+a+configurational+entropy+model&rft.au=Sehlke%2C+Alexander%3BWhittington%2C+Alan+G&rft.aulast=Sehlke&rft.aufirst=Alexander&rft.date=2016-10-15&rft.volume=191&rft.issue=&rft.spage=277&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2016.07.027 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 90 N1 - PubXState - NY N1 - Document feature - illus. incl. 8 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-11-17 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - Adam-Gibbs theory; asteroids; basalts; calibration; calorimetry; cosmochemistry; EDS spectra; entropy; geochemistry; igneous rocks; KREEP; lava; lava flows; liquid phase; magmas; maria; mathematical methods; melts; models; Moon; movement; near-infrared spectra; planets; prediction; silicate melts; solar system; spectra; temperature; tholeiitic basalt; tholeiitic composition; velocity; Vesta Asteroid; viscosity; volcanic rocks; X-ray spectra DO - http://dx.doi.org/10.1016/j.gca.2016.07.027 ER - TY - JOUR T1 - Hydration state of calcium sulfates in Gale Crater, Mars; identification of bassanite veins AN - 1832727500; 2016-092729 AB - In-situ analyses reveal the presence of hydrogen within calcium sulfate veins crosscutting the sediments found in Gale crater. Laboratory experiments were performed to calibrate the hydrogen signal measured by laser induced breakdown spectroscopy (LIBS) in a range applicable to martian data. The analyses indicate that all veins targeted so far at Gale consist predominantly of bassanite which most likely formed by dehydration of gypsum. This scenario suggests that the percolating water produced gypsum, possibly by hydration of anhydrite in aqueous solution, and remained at temperatures below approximately 60 degrees C at that time. Desiccating conditions followed, consistent with a hyperarid climate and favored by burial or impacts. Additionally, anhydrite with lesser bassanite has been found by XRD in samples of sediments hosting the veins. Our result suggests bassanite is likely found in the veins and anhydrite may be more common as a fine-grained component within the sediments. JF - Earth and Planetary Science Letters AU - Rapin, William AU - Meslin, P Y AU - Maurice, S AU - Vaniman, D AU - Nachon, M AU - Mangold, N AU - Schroeder, S AU - Gasnault, O AU - Forni, O AU - Wiens, Roger C AU - Martinez, G M AU - Cousin, A AU - Sautter, Violaine AU - Lasue, J AU - Rampe, E B AU - Archer, D Y1 - 2016/10/15/ PY - 2016 DA - 2016 Oct 15 SP - 197 EP - 205 PB - Elsevier, Amsterdam VL - 452 SN - 0012-821X, 0012-821X KW - calcium sulfate KW - anhydrite KW - Mars KW - Hesperian KW - aqueous solutions KW - paleoclimatology KW - bassanite KW - burial KW - Gale Crater KW - emission spectra KW - laboratory studies KW - gypsum KW - LIBS spectra KW - percolation KW - spectra KW - water KW - hydrology KW - ChemCam instrument KW - experimental studies KW - sulfates KW - impacts KW - veins KW - depth KW - desiccation KW - terrestrial planets KW - planets KW - identification KW - hydrogen KW - dehydration KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832727500?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Hydration+state+of+calcium+sulfates+in+Gale+Crater%2C+Mars%3B+identification+of+bassanite+veins&rft.au=Rapin%2C+William%3BMeslin%2C+P+Y%3BMaurice%2C+S%3BVaniman%2C+D%3BNachon%2C+M%3BMangold%2C+N%3BSchroeder%2C+S%3BGasnault%2C+O%3BForni%2C+O%3BWiens%2C+Roger+C%3BMartinez%2C+G+M%3BCousin%2C+A%3BSautter%2C+Violaine%3BLasue%2C+J%3BRampe%2C+E+B%3BArcher%2C+D&rft.aulast=Rapin&rft.aufirst=William&rft.date=2016-10-15&rft.volume=452&rft.issue=&rft.spage=197&rft.isbn=&rft.btitle=&rft.title=Earth+and+Planetary+Science+Letters&rft.issn=0012821X&rft_id=info:doi/10.1016%2Fj.epsl.2016.07.045 L2 - http://www.sciencedirect.com/science/journal/0012821X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 53 N1 - Document feature - illus. N1 - SuppNotes - Includes appendix N1 - Last updated - 2016-10-27 N1 - CODEN - EPSLA2 N1 - SubjectsTermNotLitGenreText - anhydrite; aqueous solutions; bassanite; burial; calcium sulfate; ChemCam instrument; dehydration; depth; desiccation; emission spectra; experimental studies; Gale Crater; gypsum; Hesperian; hydrogen; hydrology; identification; impacts; laboratory studies; LIBS spectra; Mars; paleoclimatology; percolation; planets; spectra; sulfates; terrestrial planets; veins; water DO - http://dx.doi.org/10.1016/j.epsl.2016.07.045 ER - TY - NEWS T1 - NASA Takes Next Step in Green Aviation X-planes Plans AN - 1829212767 JF - UPI Space Daily AU - Jim Banke for NASA Aeronautics News Y1 - 2016/10/15/ PY - 2016 DA - 2016 Oct 15 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1829212767?accountid=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+Takes+Next+Step+in+Green+Aviation+X-planes+Plans&rft.au=Jim+Banke+for+NASA+Aeronautics+News&rft.aulast=Jim+Banke+for+NASA+Aeronautics+News&rft.aufirst=&rft.date=2016-10-15&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 - 2016-10-15 ER - TY - JOUR T1 - Estimating Emissions of Toxic Hydrocarbons from Natural Gas Production Sites in the Barnett Shale Region of Northern Texas. AN - 1835358202; 27580823 AB - Oil and natural gas operations have continued to expand and move closer to densely populated areas, contributing to growing public concerns regarding exposure to hazardous air pollutants. During the Barnett Shale Coordinated Campaign in October, 2013, ground-based whole air samples collected downwind of oil and gas sites revealed enhancements in several potentially toxic volatile organic compounds (VOCs) when compared to background values. Molar emissions ratios relative to methane were determined for hexane, benzene, toluene, ethylbenzene, and xylene (BTEX compounds). Using methane leak rates measured from the Picarro mobile flux plane (MFP) system and a Barnett Shale regional methane emissions inventory, the rates of emission of these toxic gases were calculated. Benzene emissions ranged between 51 ± 4 and 60 ± 4 kg h-1. Hexane, the most abundantly emitted pollutant, ranged from 642 ± 45 to 1070 ± 340 kg h-1. While observed hydrocarbon enhancements fall below federal workplace standards, results may indicate a link between emissions from oil and natural gas operations and concerns about exposure to hazardous air pollutants. The larger public health risks associated with the production and distribution of natural gas are of particular importance and warrant further investigation, particularly as the use of natural gas increases in the United States and internationally. JF - Environmental science & technology AU - Marrero, Josette E AU - Townsend-Small, Amy AU - Lyon, David R AU - Tsai, Tracy R AU - Meinardi, Simone AU - Blake, Donald R AD - NASA Ames Research Center, Moffett Field, California 94035, United States. ; Departments of Geology and Geography, University of Cincinnati , Cincinnati, Ohio 45221, United States. ; Environmental Defense Fund, Austin, Texas 78701, United States. ; Picarro, Inc., Santa Clara, California 95054, United States. ; Department of Chemistry, University of California, Irvine , Irvine, California 92697, United States. Y1 - 2016/10/04/ PY - 2016 DA - 2016 Oct 04 SP - 10756 EP - 10764 VL - 50 IS - 19 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1835358202?accountid=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=Environmental+science+%26+technology&rft.atitle=Estimating+Emissions+of+Toxic+Hydrocarbons+from+Natural+Gas+Production+Sites+in+the+Barnett+Shale+Region+of+Northern+Texas.&rft.au=Marrero%2C+Josette+E%3BTownsend-Small%2C+Amy%3BLyon%2C+David+R%3BTsai%2C+Tracy+R%3BMeinardi%2C+Simone%3BBlake%2C+Donald+R&rft.aulast=Marrero&rft.aufirst=Josette&rft.date=2016-10-04&rft.volume=50&rft.issue=19&rft.spage=10756&rft.isbn=&rft.btitle=&rft.title=Environmental+science+%26+technology&rft.issn=1520-5851&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2016-09-15 N1 - Date revised - 2017-01-14 N1 - Last updated - 2017-01-19 ER - TY - JOUR T1 - Major and trace element analysis of natural and experimental igneous systems using LA-ICP-MS AN - 1861113018; 788246-4 JF - Elements AU - Jenner, Frances E AU - Arevalo, Ricardo D, Jr Y1 - 2016/10// PY - 2016 DA - October 2016 SP - 311 EP - 316 PB - Mineralogical Society of America and Mineralogical Society of Great Britain and Ireland and Mineralogical Association of Canada and Geochemical Society and Clay Minerals Society VL - 12 IS - 5 SN - 1811-5209, 1811-5209 KW - methods KW - silicate glass KW - inductively coupled plasma methods KW - volcanic rocks KW - laser methods KW - glasses KW - isotopes KW - igneous rocks KW - calibration KW - melt inclusions KW - whole rock KW - major elements KW - inclusions KW - applications KW - trace elements KW - experimental studies KW - chemical analysis KW - laser ablation KW - mass spectroscopy KW - LA-ICP-MS KW - laser-induced element fractionation KW - laser ablation inductively coupled plasma mass spectroscopy KW - matrix matching KW - interference KW - fluid inclusions KW - spectroscopy KW - 05A:Igneous and metamorphic petrology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1861113018?accountid=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=Elements&rft.atitle=Major+and+trace+element+analysis+of+natural+and+experimental+igneous+systems+using+LA-ICP-MS&rft.au=Jenner%2C+Frances+E%3BArevalo%2C+Ricardo+D%2C+Jr&rft.aulast=Jenner&rft.aufirst=Frances&rft.date=2016-10-01&rft.volume=12&rft.issue=5&rft.spage=311&rft.isbn=&rft.btitle=&rft.title=Elements&rft.issn=18115209&rft_id=info:doi/10.2113%2Fgselements.12.5.311 L2 - http://www.elementsmagazine.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 30 N1 - Document feature - illus. N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - applications; calibration; chemical analysis; experimental studies; fluid inclusions; glasses; igneous rocks; inclusions; inductively coupled plasma methods; interference; isotopes; LA-ICP-MS; laser ablation; laser ablation inductively coupled plasma mass spectroscopy; laser methods; laser-induced element fractionation; major elements; mass spectroscopy; matrix matching; melt inclusions; methods; silicate glass; spectroscopy; trace elements; volcanic rocks; whole rock DO - http://dx.doi.org/10.2113/gselements.12.5.311 ER - TY - JOUR T1 - Thoughts and reminiscences on experimental trace element partitioning AN - 1859790103; 2017-006320 JF - Geochemical Perspectives AU - Jones, John H Y1 - 2016/10// PY - 2016 DA - October 2016 SP - 148 EP - 251 PB - European Association of Geochemistry, Paris VL - 5 IS - 2 SN - 2223-7755, 2223-7755 KW - silicates KW - liquid phase KW - experimental studies KW - silicate melts KW - platinum group KW - melts KW - temperature KW - solid phase KW - partitioning KW - volatiles KW - platinum KW - metals KW - core KW - trace metals KW - trace elements KW - high temperature KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859790103?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geochemical+Perspectives&rft.atitle=Thoughts+and+reminiscences+on+experimental+trace+element+partitioning&rft.au=Jones%2C+John+H&rft.aulast=Jones&rft.aufirst=John&rft.date=2016-10-01&rft.volume=5&rft.issue=2&rft.spage=148&rft.isbn=&rft.btitle=&rft.title=Geochemical+Perspectives&rft.issn=22237755&rft_id=info:doi/ L2 - http://www.geochemicalperspectives.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Document feature - illus. N1 - Last updated - 2017-01-19 N1 - SubjectsTermNotLitGenreText - core; experimental studies; high temperature; liquid phase; melts; metals; partitioning; platinum; platinum group; silicate melts; silicates; solid phase; temperature; trace elements; trace metals; volatiles ER - TY - JOUR T1 - Forecasting Arabian Sea level rise using exponential smoothing state space models and ARIMA from TOPEX and Jason satellite radar altimeter data AN - 1855081816; PQ0003958804 AB - Sea level rise is a threat to coastal habitation and is corroborating evidence for global warming. The present study investigated the combined use of quantitative forecasting methods for sea level rise using exponential smoothing state space models (ESMs) and an autoregressive integrated moving average (ARIMA) model fed with sea level data over 17 years (1994-2010). Two levels of ESMs were employed: double (model levels with trend) and triple (model levels, trend and seasonal decomposition). The overall data analysis revealed the better performance of ARIMA in terms of index of agreement ( d = 0.79), root-mean-square error (RMSE = 32.8 mm) and mean absolute error (MAE = 25.55 mm) than the triple ESM ( d = 0.76; RMSE = 39.86 mm; MAE = 35.02 mm) and double ESM ( d = 0.14; RMSE = 52.71 mm; MAE = 45.99 mm) models. The present study results suggest that the rate of Arabian Sea level rise is high, and if this is not taken into consideration many coastal areas may become subject to climate-change-induced habitat loss in future. JF - Meteorological Applications AU - Srivastava, Prashant K AU - Islam, Tanvir AU - Singh, Sudhir K AU - Petropoulos, George P AU - Gupta, Manika AU - Dai, Qiang AD - Hydrological Sciences, NASA Goddard Space Flight Center, Greenbelt, MD, USA. Y1 - 2016/10// PY - 2016 DA - October 2016 SP - 633 EP - 639 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 23 IS - 4 SN - 1350-4827, 1350-4827 KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1855081816?accountid=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=Meteorological+Applications&rft.atitle=Forecasting+Arabian+Sea+level+rise+using+exponential+smoothing+state+space+models+and+ARIMA+from+TOPEX+and+Jason+satellite+radar+altimeter+data&rft.au=Srivastava%2C+Prashant+K%3BIslam%2C+Tanvir%3BSingh%2C+Sudhir+K%3BPetropoulos%2C+George+P%3BGupta%2C+Manika%3BDai%2C+Qiang&rft.aulast=Srivastava&rft.aufirst=Prashant&rft.date=2016-10-01&rft.volume=23&rft.issue=4&rft.spage=633&rft.isbn=&rft.btitle=&rft.title=Meteorological+Applications&rft.issn=13504827&rft_id=info:doi/10.1002%2Fmet.1585 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2017-01-01 N1 - Last updated - 2017-01-04 DO - http://dx.doi.org/10.1002/met.1585 ER - TY - JOUR T1 - Operational hydrological forecasting during the IPHEx-IOP campaign; meet the challenge AN - 1840619555; 2016-094344 AB - An operational streamflow forecasting testbed was implemented during the Intense Observing Period (IOP) of the Integrated Precipitation and Hydrology Experiment (IPHEx-IOP) in May-June 2014 to characterize flood predictability in complex terrain. Specifically, hydrological forecasts were issued daily for 12 headwater catchments in the Southern Appalachians using the Duke Coupled surface-groundwater Hydrology Model (DCHM) forced by hourly atmospheric fields and QPFs (Quantitative Precipitation Forecasts) produced by the NASA-Unified Weather Research and Forecasting (NU-WRF) model. Previous day hindcasts forced by radar-based QPEs (Quantitative Precipitation Estimates) were used to provide initial conditions for present day forecasts. This manuscript first describes the operational testbed framework and workflow during the IPHEx-IOP including a synthesis of results. Second, various data assimilation approaches are explored a posteriori (post-IOP) to improve operational (flash) flood forecasting. Although all flood events during the IOP were predicted by the IPHEx operational testbed with lead times of up to 6 h, significant errors of over- and, or under-prediction were identified that could be traced back to the QPFs and subgrid-scale variability of radar QPEs. To improve operational flood prediction, three data-merging strategies were pursued post-IOP: (1) the spatial patterns of QPFs were improved through assimilation of satellite-based microwave radiances into NU-WRF; (2) QPEs were improved by merging raingauge observations with ground-based radar observations using bias-correction methods to produce streamflow hindcasts and associated uncertainty envelope capturing the streamflow observations, and (3) river discharge observations were assimilated into the DCHM to improve streamflow forecasts using the Ensemble Kalman Filter (EnKF), the fixed-lag Ensemble Kalman Smoother (EnKS), and the Asynchronous EnKF (i.e. AEnKF) methods. Both flood hindcasts and forecasts were significantly improved by assimilating discharge observations into the DCHM. Specifically, Nash-Sutcliff Efficiency (NSE) values as high as 0.98, 0.71 and 0.99 at 15-min time-scales were attained for three headwater catchments in the inner mountain region demonstrating that the assimilation of discharge observations at the basin's outlet can reduce the errors and uncertainties in soil moisture at very small scales. Success in operational flood forecasting at lead times of 6, 9, 12 and 15 h was also achieved through discharge assimilation with NSEs of 0.87, 0.78, 0.72 and 0.51, respectively. Analysis of experiments using various data assimilation system configurations indicates that the optimal assimilation time window depends both on basin properties and storm-specific space-time-structure of rainfall, and therefore adaptive, context-aware configurations of the data assimilation system are recommended to address the challenges of flood prediction in headwater basins. JF - Journal of Hydrology AU - Tao, Jing AU - Wu, Di AU - Gourley, Jonathan J AU - Zhang, Sara Q AU - Crow, Wade AU - Peters-Lidard, Christa AU - Barros, Ana P Y1 - 2016/10// PY - 2016 DA - October 2016 SP - 434 EP - 456 PB - Elsevier, Amsterdam VL - 541 IS - Part A SN - 0022-1694, 0022-1694 KW - United States KW - geologic hazards KW - rivers and streams KW - Appalachians KW - Yadkin Basin KW - quantitative analysis KW - intense observing period KW - Broad Basin KW - floods KW - drainage basins KW - discharge KW - Pigeon Basin KW - hydrology KW - North America KW - risk management KW - rainfall KW - statistical analysis KW - Kalman filters KW - IPHEX KW - prediction KW - models KW - Southern Appalachians KW - streamflow KW - Duke coupled surface-groundwater hydrology model KW - runoff KW - North Carolina KW - natural hazards KW - corrections KW - Integrated Precipitation and Hydrology Experiment KW - Catawba Basin KW - French Broad Basin KW - 21:Hydrogeology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840619555?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Operational+hydrological+forecasting+during+the+IPHEx-IOP+campaign%3B+meet+the+challenge&rft.au=Tao%2C+Jing%3BWu%2C+Di%3BGourley%2C+Jonathan+J%3BZhang%2C+Sara+Q%3BCrow%2C+Wade%3BPeters-Lidard%2C+Christa%3BBarros%2C+Ana+P&rft.aulast=Tao&rft.aufirst=Jing&rft.date=2016-10-01&rft.volume=541&rft.issue=Part+A&rft.spage=434&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology&rft.issn=00221694&rft_id=info:doi/10.1016%2Fj.jhydrol.2016.02.019 L2 - http://www.sciencedirect.com/science/journal/00221694 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 153 N1 - Document feature - illus. incl. 4 tables, sketch maps N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-11-17 N1 - CODEN - JHYDA7 N1 - SubjectsTermNotLitGenreText - Appalachians; Broad Basin; Catawba Basin; corrections; discharge; drainage basins; Duke coupled surface-groundwater hydrology model; floods; French Broad Basin; geologic hazards; hydrology; Integrated Precipitation and Hydrology Experiment; intense observing period; IPHEX; Kalman filters; models; natural hazards; North America; North Carolina; Pigeon Basin; prediction; quantitative analysis; rainfall; risk management; rivers and streams; runoff; Southern Appalachians; statistical analysis; streamflow; United States; Yadkin Basin DO - http://dx.doi.org/10.1016/j.jhydrol.2016.02.019 ER - TY - JOUR T1 - Heterogeneous histories of Ni-bearing pyrrhotite and pentlandite grains in the CI chondrites Orgueil and Alais AN - 1840619426; 2016-096676 AB - Compositional and structural analyses of CI chondrite iron-nickel sulfide grains reveal heterogeneity both across and within the Orgueil and Alais meteorites. Orgueil grains with the 4C monoclinic pyrrhotite structure have variable metal-to-sulfur ratios and nickel contents. These range from the nominal ratio of 0.875 for Fe (sub 7) S (sub 8) with <1 atom% nickel to a high metal-to-sulfur ratio of 0.97 with 15 atom% nickel. These data reveal a previously unrecognized low-temperature solid solution between Fe (sub 7) S (sub 8) and Fe (sub 5) Ni (sub 3) S (sub 8) . We have also identified 6C monoclinic pyrrhotite among the Orgueil iron-nickel sulfides. The occurrence of pentlandite in Orgueil is confirmed for the first time crystallographically. In contrast, sulfide grains in Alais do not show the same spread in composition and structure; rather they represent the endmembers: low-Ni 4C monoclinic pyrrhotite and pentlandite. We investigate possible formation/alteration scenarios: crystallization from a melt, solid-state diffusion and/or exsolution, oxidation of pre-existing sulfides, and precipitation from a fluid. Sulfide grains are sensitive to alteration conditions; these data suggest that the structures and compositions of the sulfide assemblages in Orgueil and Alais were established by late-stage parent body aqueous alteration, followed in some cases by low-temperature solid-state processes. The samples record different alteration histories, with Orgueil experiencing lower equilibration temperatures (25 degrees C) than Alais (100-135 degrees C). We conclude that millimeter-scale heterogeneity existed in alteration conditions (e.g., temperature, pH, oxygen fugacity, sulfur fugacity, duration of alteration) on the parent body. This variability is evidenced by the diversity among sulfide grains located within millimeters of one another. Abstract Copyright The Meteoritical Society, 2016. JF - Meteoritics & Planetary Science AU - Berger, Eve L AU - Lauretta, Dante S AU - Zega, Thomas J AU - Keller, Lindsay P Y1 - 2016/10// PY - 2016 DA - October 2016 SP - 1813 EP - 1829 PB - Meteoritical Society, Fayetteville, AR VL - 51 IS - 10 SN - 1086-9379, 1086-9379 KW - CI chondrites KW - diffusion KW - stony meteorites KW - Orgueil Meteorite KW - crystal systems KW - pentlandite KW - parent bodies KW - electron microscopy data KW - carbonaceous chondrites KW - Alais Meteorite KW - TEM data KW - temperature KW - electron probe data KW - aqueous alteration KW - meteorites KW - metals KW - nickel KW - monoclinic system KW - heterogeneity KW - chondrites KW - chemical composition KW - sulfides KW - pyrrhotite KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840619426?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Heterogeneous+histories+of+Ni-bearing+pyrrhotite+and+pentlandite+grains+in+the+CI+chondrites+Orgueil+and+Alais&rft.au=Berger%2C+Eve+L%3BLauretta%2C+Dante+S%3BZega%2C+Thomas+J%3BKeller%2C+Lindsay+P&rft.aulast=Berger&rft.aufirst=Eve&rft.date=2016-10-01&rft.volume=51&rft.issue=10&rft.spage=1813&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12721 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 81 N1 - PubXState - AR N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2016-11-17 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - Alais Meteorite; aqueous alteration; carbonaceous chondrites; chemical composition; chondrites; CI chondrites; crystal systems; diffusion; electron microscopy data; electron probe data; heterogeneity; metals; meteorites; monoclinic system; nickel; Orgueil Meteorite; parent bodies; pentlandite; pyrrhotite; stony meteorites; sulfides; TEM data; temperature DO - http://dx.doi.org/10.1111/maps.12721 ER - TY - JOUR T1 - Silicic lunar volcanism; testing the crustal melting model AN - 1840618950; 2016-096614 AB - Lunar silicic rocks were first identified by granitic fragments found in samples brought to Earth by the Apollo missions, followed by the discovery of silicic domes on the lunar surface through remote sensing. Although these silicic lithologies are thought to make up a small portion of the lunar crust, their presence indicates that lunar crustal evolution is more complex than originally thought. Models currently used to describe the formation of silicic lithologies on the Moon include in situ differentiation of a magma, magma differentiation with silicate liquid immiscibility, and partial melting of the crust. This study focuses on testing a crustal melting model through partial melting experiments on compositions representing lithologies spatially associated with the silicic domes. The experiments were guided by the results of modeling melting temperatures and residual melt compositions of possible protoliths for lunar silicic rocks using the thermodynamic modeling software, rhyolite-MELTS. Rhyolite-MELTS simulations predict liquidus temperatures of 950-1040 degrees C for lunar granites under anhydrous conditions, which guided the temperature range for the experiments. Monzogabbro, alkali gabbronorite, and KREEP basalt were identified as potential protoliths due to their ages, locations on the Moon (i.e., located near observed silicic domes), chemically evolved compositions, and the results from rhyolite-MELTS modeling. Partial melting experiments, using mixtures of reagent grade oxide powders representing bulk rock compositions of these rock types, were carried out at atmospheric pressure over the temperature range of 900-1100 degrees C. Because all lunar granite samples and remotely sensed domes have an elevated abundance of Th, some of the mixtures were doped with Th to observe its partitioning behavior. Run products show that at temperatures of 1050 and 1100 degrees C, melts of the three protoliths are not silicic in nature (i.e., they have or = 0.005 GPa), the observed immiscibility in the partial melting experiments would be suppressed. JF - American Mineralogist AU - Gullikson, Amber L AU - Hagerty, Justin J AU - Reid, Mary R AU - Rapp, Jennifer F AU - Draper, David S Y1 - 2016/10// PY - 2016 DA - October 2016 SP - 2312 EP - 2321 PB - Mineralogical Society of America, Washington, DC VL - 101 IS - 10 SN - 0003-004X, 0003-004X KW - rhyolitic composition KW - igneous rocks KW - partial melting KW - data processing KW - Apollo Program KW - granitic composition KW - melts KW - temperature KW - plutonic rocks KW - melting KW - volcanism KW - MELTS Program KW - norite KW - liquid phase KW - experimental studies KW - Moon KW - silicate melts KW - magmatism KW - felsic composition KW - computer programs KW - lunar samples KW - immiscibility KW - lunar crust KW - theoretical models KW - gabbros KW - high temperature KW - 04:Extraterrestrial geology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840618950?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/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=Silicic+lunar+volcanism%3B+testing+the+crustal+melting+model&rft.au=Gullikson%2C+Amber+L%3BHagerty%2C+Justin+J%3BReid%2C+Mary+R%3BRapp%2C+Jennifer+F%3BDraper%2C+David+S&rft.aulast=Gullikson&rft.aufirst=Amber&rft.date=2016-10-01&rft.volume=101&rft.issue=10&rft.spage=2312&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam-2016-5619 L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2016-01-01 N1 - Number of references - 68 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2016-11-17 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - Apollo Program; computer programs; data processing; experimental studies; felsic composition; gabbros; granitic composition; high temperature; igneous rocks; immiscibility; liquid phase; lunar crust; lunar samples; magmatism; melting; melts; MELTS Program; Moon; norite; partial melting; plutonic rocks; rhyolitic composition; silicate melts; temperature; theoretical models; volcanism DO - http://dx.doi.org/10.2138/am-2016-5619 ER - TY - JOUR T1 - Constraining the sulfur dioxide degassing flux from Turrialba Volcano, Costa Rica using unmanned aerial system measurements AN - 1840615502; 2016-098878 AB - Observed sulfur dioxide (SO (sub 2) ) mixing ratios onboard unmanned aerial systems (UAS) during March 11-13, 2013 are used to constrain the three-day averaged SO (sub 2) degassing flux from Turrialba volcano within a Bayesian inverse modeling framework. A mesoscale model coupled with Lagrangian stochastic particle backward trajectories is used to quantify the source-receptor relationships at very high spatial resolutions (i.e., < 1 km). The model shows better performance in reproducing the near-surface meteorological properties and observed SO (sub 2) variations when using a first-order closure non-local planetary boundary layer (PBL) scheme. The optimized SO (sub 2) degassing fluxes vary from 0.59 + or - 0.37 to 0.83 + or - 0.33 kt d (super -1) depending on the PBL scheme used. These fluxes are in good agreement with ground-based gas flux measurements, and correspond to corrective scale factors of 8-12 to the posteruptive SO (sub 2) degassing rate in the AeroCom emission inventory. The maximum a posteriori solution for the SO (sub 2) flux is highly sensitive to the specification of prior and observational errors, and relatively insensitive to the SO (sub 2) loss term and temporal averaging of observations. Our results indicate relatively low degassing activity but sustained sulfur emissions from Turrialba volcano to the troposphere during March 2013. This study demonstrates the utility of low-cost small UAS platforms for volcanic gas composition and flux analysis. JF - Journal of Volcanology and Geothermal Research AU - Xi, Xin AU - Johnson, Matthew S AU - Jeong, Seongeun AU - Fladeland, Matthew AU - Pieri, David AU - Diaz, Jorge Andres AU - Bland, Geoffrey L Y1 - 2016/10// PY - 2016 DA - October 2016 SP - 110 EP - 118 PB - Elsevier, Amsterdam VL - 325 SN - 0377-0273, 0377-0273 KW - sulfur dioxide KW - Turrialba KW - Costa Rica KW - trajectories KW - atmosphere KW - troposphere KW - measurement KW - gases KW - models KW - unmanned aerial systems KW - errors KW - transport KW - sensitivity analysis KW - mixing KW - eruptions KW - geochemical methods KW - volcanoes KW - sulfur KW - Central America KW - boundary layer KW - airborne methods KW - 24:Quaternary geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840615502?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Constraining+the+sulfur+dioxide+degassing+flux+from+Turrialba+Volcano%2C+Costa+Rica+using+unmanned+aerial+system+measurements&rft.au=Xi%2C+Xin%3BJohnson%2C+Matthew+S%3BJeong%2C+Seongeun%3BFladeland%2C+Matthew%3BPieri%2C+David%3BDiaz%2C+Jorge+Andres%3BBland%2C+Geoffrey+L&rft.aulast=Xi&rft.aufirst=Xin&rft.date=2016-10-01&rft.volume=325&rft.issue=&rft.spage=110&rft.isbn=&rft.btitle=&rft.title=Journal+of+Volcanology+and+Geothermal+Research&rft.issn=03770273&rft_id=info:doi/10.1016%2Fj.jvolgeores.2016.06.023 L2 - http://www.sciencedirect.com/science/journal/03770273 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 45 N1 - Document feature - illus. incl. 2 tables, sketch maps N1 - Last updated - 2016-11-17 N1 - CODEN - JVGRDQ N1 - SubjectsTermNotLitGenreText - airborne methods; atmosphere; boundary layer; Central America; Costa Rica; errors; eruptions; gases; geochemical methods; measurement; mixing; models; sensitivity analysis; sulfur; sulfur dioxide; trajectories; transport; troposphere; Turrialba; unmanned aerial systems; volcanoes DO - http://dx.doi.org/10.1016/j.jvolgeores.2016.06.023 ER - TY - JOUR T1 - Silicon isotope fractionation during microbial reduction of Fe(III)-Si gels under Archean sea water conditions and implications for iron formation genesis AN - 1840615399; 2016-094231 AB - Microbial dissimilatory iron reduction (DIR) is a deeply rooted metabolism in the Bacteria and Archaea. In the Archean and Proterozoic, the most likely electron acceptor for DIR in marine environments was Fe(III)-Si gels. It has been recently suggested that the Fe and Si cycles were coupled through sorption of aqueous Si to iron oxides/hydroxides, and through release of Si during DIR. Evidence for the close association of the Fe and Si cycles comes from banded iron formations (BIFs), which consist of alternating bands of Fe-bearing minerals and quartz (chert). Although there has been extensive study of the stable Fe isotope fractionations produced by DIR of Fe(III)-Si gels, as well as studies of stable Fe isotope fractionations in analogous abiologic systems, no studies to date have investigated stable Si isotope fractionations produced by DIR. In this study, the stable Si isotope fractionations produced by microbial reduction of Fe(III)-Si gels were investigated in simulated artificial Archean seawater (AAS), using the marine iron-reducing bacterium Desulfuromonas acetoxidans. Microbial reduction produced very large (super 30) Si/ (super 28) Si isotope fractionations between the solid and aqueous phase at approximately 23 degrees C, where Delta (super 30) Si (sub solid-aqueous) isotope fractionations of -3.35 + or - 0.16 ppm and -3.46 + or - 0.09 ppm were produced in two replicate experiments at 32% Fe(III) reduction (solid-phase Fe(II)/Fe (sub Total) = 0.32). This isotopic fractionation was substantially greater than that observed in two abiologic controls that had solid-phase Fe(II)/Fe (sub Total) = 0.02-0.03, which produced Delta (super 30) Si (sub solid-aqueous) isotope fractionations of -2.83 + or - 0.24 ppm and -2.65 + or - 0.28 ppm. In a companion study, the equilibrium Delta (super 30) Si (sub solid-aqueous) isotope fractionation was determined to be -2.3 ppm for solid-phase Fe(II)/Fe (sub Total) = 0. Collectively, these results highlight the importance of Fe(II) in Fe-Si gels in producing large changes in Si isotope fractionations. These results suggest that DIR should produce highly negative delta (super 30) Si values in quartz that is the product of diagenetic reactions associated with Fe-Si gels. Such Si isotope compositions would be expected to be associated with Fe-bearing minerals that contain Fe(II), indicative of reduction, such as magnetite. Support for this model comes from recent in situ Si isotope studies of oxide-facies BIFs, where quartz in magnetite-rich samples have significantly more negative delta (super 30) Si values than quartz in hematite-rich samples. JF - Geochimica et Cosmochimica Acta AU - Reddy, Thiruchelvi R AU - Zheng, Xin-Yuan AU - Roden, Eric E AU - Beard, Brian L AU - Johnson, Clark M Y1 - 2016/10// PY - 2016 DA - October 2016 SP - 85 EP - 99 PB - Elsevier, New York, NY VL - 190 SN - 0016-7037, 0016-7037 KW - isotope fractionation KW - sea water KW - upper Precambrian KW - Archaea KW - X-ray diffraction data KW - isotopes KW - banded iron formations KW - sedimentary basins KW - silicon KW - stable isotopes KW - gels KW - paleoecology KW - sedimentary rocks KW - chemical reactions KW - basins KW - Archean KW - reduction KW - depositional environment KW - experimental studies KW - colloidal materials KW - chemically precipitated rocks KW - Precambrian KW - metabolism KW - isotope ratios KW - biochemistry KW - statistical analysis KW - Proterozoic KW - electron microscopy data KW - basin analysis KW - TEM data KW - biogenic processes KW - paleoenvironment KW - iron formations KW - marine environment KW - mathematical methods KW - bacteria KW - Si-30/Si-28 KW - SEM data KW - backscattering KW - 06A:Sedimentary petrology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840615399?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Silicon+isotope+fractionation+during+microbial+reduction+of+Fe%28III%29-Si+gels+under+Archean+sea+water+conditions+and+implications+for+iron+formation+genesis&rft.au=Reddy%2C+Thiruchelvi+R%3BZheng%2C+Xin-Yuan%3BRoden%2C+Eric+E%3BBeard%2C+Brian+L%3BJohnson%2C+Clark+M&rft.aulast=Reddy&rft.aufirst=Thiruchelvi&rft.date=2016-10-01&rft.volume=190&rft.issue=&rft.spage=85&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2016.06.035 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 83 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-11-17 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - Archaea; Archean; backscattering; bacteria; banded iron formations; basin analysis; basins; biochemistry; biogenic processes; chemical reactions; chemically precipitated rocks; colloidal materials; depositional environment; electron microscopy data; experimental studies; gels; iron formations; isotope fractionation; isotope ratios; isotopes; marine environment; mathematical methods; metabolism; paleoecology; paleoenvironment; Precambrian; Proterozoic; reduction; sea water; sedimentary basins; sedimentary rocks; SEM data; Si-30/Si-28; silicon; stable isotopes; statistical analysis; TEM data; upper Precambrian; X-ray diffraction data DO - http://dx.doi.org/10.1016/j.gca.2016.06.035 ER - TY - JOUR T1 - Horizontal and vertical velocities derived from the IDS contribution to ITRF2014, and comparisons with geophysical models AN - 1832622326; 784012-15 AB - In the context of the 2014 realization of the International Terrestrial Reference Frame, the International DORIS (Doppler Orbitography Radiopositioning Integrated by Satellite) Service (IDS) has delivered to the IERS a set of 1140 weekly SINEX files including station coordinates and Earth orientation parameters, covering the time period from 1993.0 to 2015.0. From this set of weekly SINEX files, the IDS combination centre estimated a cumulative DORIS position and velocity solution to obtain mean horizontal and vertical motion of 160 stations at 71 DORIS sites. The main objective of this study is to validate the velocities of the DORIS sites by comparison with external models or time-series. Horizontal velocities are compared with two recent global plate models (GEODVEL 2010 and NNR-MORVEL56). Prior to the comparisons, DORIS horizontal velocities were corrected for Global Isostatic Adjustment from the ICE-6G (VM5a) model. For more than half of the sites, the DORIS horizontal velocities differ from the global plate models by less than 2-3 mm yr (super -1) . For five of the sites (Arequipa, Dionysos/Gavdos, Manila and Santiago) with horizontal velocity differences with respect to these models larger than 10 mm yr-1, comparisons with GNSS estimates show the veracity of the DORIS motions. Vertical motions from the DORIS cumulative solution are compared with the vertical velocities derived from the latest GPS cumulative solution over the time span 1995.0-2014.0 from the University of La Rochelle solution at 31 co-located DORIS-GPS sites. These two sets of vertical velocities show a correlation coefficient of 0.83. Vertical differences are larger than 2 mm yr (super -1) at 23 percent of the sites. At Thule, the disagreement is explained by fine-tuned DORIS discontinuities in line with the mass variations of outlet glaciers. Furthermore, the time evolution of the vertical time-series from the DORIS station in Thule show similar trends to the GRACE equivalent water height. JF - Geophysical Journal International AU - Moreaux, G AU - Lemoine, F G AU - Argus, D F AU - Santamaria-Gomez, A AU - Willis, P AU - Soudarin, L AU - Gravelle, M AU - Ferrage, P Y1 - 2016/10// PY - 2016 DA - October 2016 SP - 209 EP - 227 PB - Oxford University Press on behalf of The Royal Astronomical Society, the Deutsche Geophysikalische Gesellschaft and the European Geophysical Society VL - 207 IS - 1 SN - 0956-540X, 0956-540X KW - vertical movements KW - International DORIS Service KW - DORIS KW - global KW - geophysical methods KW - International Terrestrial Reference Frame KW - geodesy KW - satellite methods KW - models KW - isostasy KW - motions KW - plates KW - plate tectonics KW - horizontal movements KW - velocity KW - remote sensing KW - Doppler Orbitography Radiopositioning Integrated by Satellite KW - 18:Solid-earth geophysics KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832622326?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Journal+International&rft.atitle=Horizontal+and+vertical+velocities+derived+from+the+IDS+contribution+to+ITRF2014%2C+and+comparisons+with+geophysical+models&rft.au=Moreaux%2C+G%3BLemoine%2C+F+G%3BArgus%2C+D+F%3BSantamaria-Gomez%2C+A%3BWillis%2C+P%3BSoudarin%2C+L%3BGravelle%2C+M%3BFerrage%2C+P&rft.aulast=Moreaux&rft.aufirst=G&rft.date=2016-10-01&rft.volume=207&rft.issue=1&rft.spage=209&rft.isbn=&rft.btitle=&rft.title=Geophysical+Journal+International&rft.issn=0956540X&rft_id=info:doi/ L2 - http://gji.oxfordjournals.org/content/207/1/209.abstract http://www.blackwellpublishing.com/journal.asp?ref=0956-540X LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 45 N1 - Document feature - illus. incl. 1 table, sketch maps N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - Doppler Orbitography Radiopositioning Integrated by Satellite; DORIS; geodesy; geophysical methods; global; horizontal movements; International DORIS Service; International Terrestrial Reference Frame; isostasy; models; motions; plate tectonics; plates; remote sensing; satellite methods; velocity; vertical movements ER - TY - JOUR T1 - Ruxolitinib therapy and telomere length in myelofibrosis AN - 1831858492 JF - Blood Cancer Journal AU - Caocci, G AU - Greco, M AU - Delogu, G AU - Secchi, C AU - Perra, A AU - Ghiani, S AU - Orru, F AU - Vacca, A AU - Galimi, F AU - La Nasa, G Y1 - 2016/10// PY - 2016 DA - Oct 2016 SP - 2 CY - London PB - Nature Publishing Group VL - 6 IS - 10 KW - Medical Sciences--Hematology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1831858492?accountid=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=Blood+Cancer+Journal&rft.atitle=Ruxolitinib+therapy+and+telomere+length+in+myelofibrosis&rft.au=Caocci%2C+G%3BGreco%2C+M%3BDelogu%2C+G%3BSecchi%2C+C%3BPerra%2C+A%3BGhiani%2C+S%3BOrru%2C+F%3BVacca%2C+A%3BGalimi%2C+F%3BLa+Nasa%2C+G&rft.aulast=Caocci&rft.aufirst=G&rft.date=2016-10-01&rft.volume=6&rft.issue=10&rft.spage=e479&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright Nature Publishing Group Oct 2016 N1 - Last updated - 2016-11-02 DO - http://dx.doi.org/10.1038/bcj.2016.91 ER - TY - JOUR T1 - Titan's organic aerosols; molecular composition and structure of laboratory analogues inferred from pyrolysis gas chromatography mass spectrometry analysis AN - 1824212659; 2016-081537 AB - Analogues of Titan's aerosols are of primary interest in the understanding of Titan's atmospheric chemistry and climate, and in the development of in situ instrumentation for future space missions. Numerous studies have been carried out to characterize laboratory analogues of Titan aerosols (tholins), but their molecular composition and structure are still poorly known. If pyrolysis gas chromatography mass spectrometry (pyr-GCMS) has been used for years to give clues about their chemical composition, highly disparate results were obtained with this technique. They can be attributed to the variety of analytical conditions used for pyr-GCMS analyses, and/or to differences in the nature of the analogues analyzed, that were produced with different laboratory set-ups under various operating conditions. In order to have a better description of Titan's tholin's molecular composition by pyr-GCMS, we carried out a systematic study with two major objectives: (i) exploring the pyr-GCMS analytical parameters to find the optimal ones for the detection of a wide range of chemical products allowing a characterization of the tholins composition as comprehensive as possible, and (ii) highlighting the role of the CH (sub 4) ratio in the gaseous reactive medium on the tholin's molecular structure. We used a radio-frequency plasma discharge to synthetize tholins with different concentrations of CH (sub 4) diluted in N (sub 2) . The samples were pyrolyzed at temperatures covering the 200-700 degrees C range. The extracted gases were then analyzed by GCMS for their molecular identification. The optimal pyrolysis temperature for characterizing the molecular composition of our tholins by GCMS analysis is found to be 600 degrees C. This temperature choice results from the best compromise between the number of compounds released, the quality of the signal and the appearance of pyrolysis artifacts. About a hundred molecules are identified as pyrolysates. A common major chromatographic pattern appears clearly for all the samples even if the number of released compounds can significantly differ. The hydrocarbon chain content increases in tholins when the CH (sub 4) ratio increases. A semi-quantitative study of the nitriles (most abundant chemical family in our chromatograms) released during the pyrolysis shows the existence of a correlation between the amount of a nitrile released and its molecular mass, similarly to the previous quantification of nitriles in the plasma gas-phase. Moreover, numerous nitriles are present both in tholins and in the gas phase, confirming their suspected role in the gas phase as precursors of the solid organic particles. JF - Icarus AU - Morisson, Marietta AU - Szopa, Cyril AU - Carrasco, Nathalie AU - Buch, Arnaud AU - Gautier, Thomas Y1 - 2016/10// PY - 2016 DA - October 2016 SP - 442 EP - 454 PB - Elsevier, New York, NY VL - 277 SN - 0019-1035, 0019-1035 KW - tholins KW - icy satellites KW - experimental studies KW - methane KW - gas chromatograms KW - aliphatic hydrocarbons KW - mass spectra KW - alkanes KW - temperature KW - nitrogen KW - gases KW - molecular structure KW - laboratory studies KW - organic compounds KW - pyrolysis KW - chromatograms KW - hydrocarbons KW - composition KW - Titan Satellite KW - aerosols KW - spectra KW - synthesis KW - satellites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824212659?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Icarus&rft.atitle=Titan%27s+organic+aerosols%3B+molecular+composition+and+structure+of+laboratory+analogues+inferred+from+pyrolysis+gas+chromatography+mass+spectrometry+analysis&rft.au=Morisson%2C+Marietta%3BSzopa%2C+Cyril%3BCarrasco%2C+Nathalie%3BBuch%2C+Arnaud%3BGautier%2C+Thomas&rft.aulast=Morisson&rft.aufirst=Marietta&rft.date=2016-10-01&rft.volume=277&rft.issue=&rft.spage=442&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.05.038 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 56 N1 - PubXState - NY N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2016-09-29 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - aerosols; aliphatic hydrocarbons; alkanes; chromatograms; composition; experimental studies; gas chromatograms; gases; hydrocarbons; icy satellites; laboratory studies; mass spectra; methane; molecular structure; nitrogen; organic compounds; pyrolysis; satellites; spectra; synthesis; temperature; tholins; Titan Satellite DO - http://dx.doi.org/10.1016/j.icarus.2016.05.038 ER - TY - JOUR T1 - Origin and significance of decameter-scale polygons in the lower Peace Vallis fan of Gale Crater, Mars AN - 1824212656; 2016-081513 AB - Decameter-scale polygons are extensively developed in the Bedded Fractured (BF) Unit of the lower Peace Vallis fan. The polygons occur in a likely extension of the Gillespie Lake Member, north of Yellowknife Bay, the section first drilled by the Mars Science Laboratory (MSL) mission. We examine hypotheses for the origin of these polygons to provide insight into the history of Gale crater. The polygons are approximately 4-30 m across, square to rectangular, and defined by approximately 0.5-4 m wide, generally straight troughs with orthogonal intersections. Polygon networks are typically oriented-orthogonal systems, with occasional nearly circular patterns, hundreds of meters across. Potential origins include cooling of lava, and for sedimentary units, syneresis, unloading, weathering, desiccation, impact processes, and cold-climate thermal contraction. Cold-climate thermal contraction is the hypothesis most consistent with the sedimentary nature of the BF Unit and the polygon morphology, geometry, networks, and apparent restriction to the coarse-grained Gillespie Lake Member. A periglacial setting further provides the best analogs for the circular networks and is consistent with geologic context and MSL data. Most of the decametric polygons appear to be ancient. They are confined to the Hesperian BF Unit, and only a few of their bounding fractures extend into younger or recently exposed units. In this regard, they differ from the majority of proposed thermal-contraction polygons on Mars, as those are generally thought to be young features, and, accordingly, the history of formation, preservation and reactivation of the decametric polygons is likely to be more complex than that of any proposed young polygons on Mars. The decametric polygons in the BF Unit may represent landforms developed in a cold but still comparatively wet interlude between a clement early Mars and the much drier and colder planet of today. JF - Icarus AU - Oehler, Dorothy Z AU - Mangold, Nicolas AU - Hallet, Bernard AU - Fairen, Alberto G AU - Le Deit, Laetitia AU - Williams, Amy J AU - Sletten, Ronald S AU - Martinez-Frias, Jesus Y1 - 2016/10// PY - 2016 DA - October 2016 SP - 56 EP - 72 PB - Elsevier, New York, NY VL - 277 SN - 0019-1035, 0019-1035 KW - Yellowknife Bay KW - Peace Vallis KW - networks KW - imagery KW - Mars Reconnaissance Orbiter KW - Mars KW - landforms KW - periglacial features KW - Hesperian KW - Context Camera KW - temperature KW - geometry KW - Gale Crater KW - terrestrial planets KW - morphology KW - planets KW - contraction KW - Gillespie Lake Member KW - Mars Science Laboratory KW - HiRISE KW - polygons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824212656?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Origin+and+significance+of+decameter-scale+polygons+in+the+lower+Peace+Vallis+fan+of+Gale+Crater%2C+Mars&rft.au=Oehler%2C+Dorothy+Z%3BMangold%2C+Nicolas%3BHallet%2C+Bernard%3BFairen%2C+Alberto+G%3BLe+Deit%2C+Laetitia%3BWilliams%2C+Amy+J%3BSletten%2C+Ronald+S%3BMartinez-Frias%2C+Jesus&rft.aulast=Oehler&rft.aufirst=Dorothy&rft.date=2016-10-01&rft.volume=277&rft.issue=&rft.spage=56&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.04.038 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 92 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table, sketch maps N1 - Last updated - 2016-09-29 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - Context Camera; contraction; Gale Crater; geometry; Gillespie Lake Member; Hesperian; HiRISE; imagery; landforms; Mars; Mars Reconnaissance Orbiter; Mars Science Laboratory; morphology; networks; Peace Vallis; periglacial features; planets; polygons; temperature; terrestrial planets; Yellowknife Bay DO - http://dx.doi.org/10.1016/j.icarus.2016.04.038 ER - TY - JOUR T1 - Erythroblast morphology in refractory anemia with ring sideroblasts and thrombocytosis AN - 1821644339 JF - American Journal of Hematology AU - Caocci, Giovanni AU - La Nasa, Giorgio AU - Bain, Barbara J Y1 - 2016/10// PY - 2016 DA - Oct 2016 SP - 1056 CY - New York PB - Wiley Subscription Services, Inc. VL - 91 IS - 10 SN - 03618609 KW - Medical Sciences--Sports Medicine UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1821644339?accountid=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=American+Journal+of+Hematology&rft.atitle=Erythroblast+morphology+in+refractory+anemia+with+ring+sideroblasts+and+thrombocytosis&rft.au=Caocci%2C+Giovanni%3BLa+Nasa%2C+Giorgio%3BBain%2C+Barbara+J&rft.aulast=Caocci&rft.aufirst=Giovanni&rft.date=2016-10-01&rft.volume=91&rft.issue=10&rft.spage=1056&rft.isbn=&rft.btitle=&rft.title=American+Journal+of+Hematology&rft.issn=03618609&rft_id=info:doi/10.1002%2Fajh.24448 LA - English DB - ProQuest Central N1 - Copyright - © 2016 Wiley Periodicals, Inc. N1 - Last updated - 2016-09-21 DO - http://dx.doi.org/10.1002/ajh.24448 ER - TY - JOUR T1 - SMAP L-Band Microwave Radiometer: RFI Mitigation Prelaunch Analysis and First Year On-Orbit Observations AN - 1815693809; PQ0003602923 AB - The National Aeronautics and Space Administration's (NASA) Soil Moisture Active and Passive (SMAP) mission, which was launched on January 31, 2015, is providing global measurements of soil moisture and freeze/thaw state. The SMAP radiometer operates within the protected Earth Exploration Satellite Service passive frequency allocation of 1400-1427 MHz. However, unauthorized in-band transmitters and out-of-band emissions from transmitters operating at frequencies adjacent to this allocated spectrum are known to cause interference to microwave radiometry in this band. Because measurement corruption by these terrestrial transmissions, which is referred to as radio-frequency interference (RFI), threatens mission success, the SMAP radiometer includes special flight hardware to enable the detection and filtering of RFI. Results from the first year of SMAP data show the presence of RFI with frequent occurrence over Asia and Europe. During the calibration/validation stage of the mission, the RFI detection and mitigation algorithms were modified to provide enhanced performance. Analysis of the L1B_TB products indicates good algorithmic performance with respect to RFI detection and removal. However, some regions of the globe (e.g., Japan) continue to experience complete data loss. This paper summarizes updates to the SMAP RFI processing algorithms based on prelaunch tests and on-orbit measurements, as well as RFI information obtained in SMAP's first year on orbit. JF - IEEE Transactions on Geoscience and Remote Sensing AU - Mohammed, Priscilla N AU - Aksoy, Mustafa AU - Piepmeier, Jeffrey R AU - Johnson, Joel T AU - Bringer, Alexandra AD - NASA Goddard Space Flight Center, Morgan State University, Greenbelt, Baltimore, MD, MD, USAUSA Y1 - 2016/10// PY - 2016 DA - October 2016 SP - 6035 EP - 6047 PB - Institute of Electrical and Electronics Engineers, Inc., 345 E. 47th St. NY NY 10017-2394 United States VL - 54 IS - 10 SN - 0196-2892, 0196-2892 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Remote Sensing KW - INW, Japan KW - Satellite Technology KW - Mathematical models KW - Algorithms KW - Remote sensing KW - Soil Water KW - Microwave radiometers KW - Radiometers KW - Microwaves KW - Calibrations KW - Radiometry KW - ANE, Europe KW - Soils KW - Moisture Content KW - Exploration KW - Environment management KW - Q2 09123:Conservation KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815693809?accountid=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=IEEE+Transactions+on+Geoscience+and+Remote+Sensing&rft.atitle=SMAP+L-Band+Microwave+Radiometer%3A+RFI+Mitigation+Prelaunch+Analysis+and+First+Year+On-Orbit+Observations&rft.au=Mohammed%2C+Priscilla+N%3BAksoy%2C+Mustafa%3BPiepmeier%2C+Jeffrey+R%3BJohnson%2C+Joel+T%3BBringer%2C+Alexandra&rft.aulast=Mohammed&rft.aufirst=Priscilla&rft.date=2016-10-01&rft.volume=54&rft.issue=10&rft.spage=6035&rft.isbn=&rft.btitle=&rft.title=IEEE+Transactions+on+Geoscience+and+Remote+Sensing&rft.issn=01962892&rft_id=info:doi/10.1109%2FTGRS.2016.2580459 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-08-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Radiometers; Microwaves; Mathematical models; Soils; Remote sensing; Environment management; Microwave radiometers; Remote Sensing; Satellite Technology; Radiometry; Calibrations; Algorithms; Exploration; Moisture Content; Soil Water; INW, Japan; ANE, Europe DO - http://dx.doi.org/10.1109/TGRS.2016.2580459 ER - TY - JOUR T1 - Geoelectric hazard maps for the continental United States AN - 1863566515; 2017-008668 AB - In support of a multiagency project for assessing induction hazards, we present maps of extreme-value geoelectric amplitudes over about half of the continental United States. These maps are constructed using a parameterization of induction: estimates of Earth surface impedance, obtained at discrete geographic sites from magnetotelluric survey data, are convolved with latitude-dependent statistical maps of extreme-value geomagnetic activity, obtained from decades of magnetic observatory data. Geoelectric amplitudes are estimated for geomagnetic waveforms having 240 s sinusoidal period and amplitudes over 10 min that exceed a once-per-century threshold. As a result of the combination of geographic differences in geomagnetic activity and Earth surface impedance, once-per-century geoelectric amplitudes span more than 2 orders of magnitude and are an intricate function of location. For north-south induction, once-per-century geoelectric amplitudes across large parts of the United States have a median value of 0.26 V/km; for east-west geomagnetic variation the median value is 0.23 V/km. At some locations, once-per-century geoelectric amplitudes exceed 3 V/km. Abstract Copyright (2016), . The Authors. JF - Geophysical Research Letters AU - Love, Jeffrey J AU - Pulkkinen, Antti AU - Bedrosian, Paul A AU - Jonas, Seth AU - Kelbert, Anna AU - Rigler, E Joshua AU - Finn, Carol A AU - Balch, Christopher C AU - Rutledge, Robert AU - Waggel, Richard M AU - Sabata, Andrew T AU - Kozyra, Janet U AU - Black, Carrie E Y1 - 2016/09/28/ PY - 2016 DA - 2016 Sep 28 SP - 9415 EP - 9424 PB - American Geophysical Union, Washington, DC VL - 43 IS - 18 SN - 0094-8276, 0094-8276 KW - United States KW - electrical conductivity KW - geologic hazards KW - magnetic storms KW - induction KW - geophysical methods KW - electrical methods KW - magnetic methods KW - electrical field KW - waveforms KW - geologic hazards maps KW - magnetic field KW - magnetotelluric methods KW - conductivity KW - maps KW - natural hazards KW - electromagnetic methods KW - storms KW - electromagnetic induction KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1863566515?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Igneous+processes+and+dike+swarms%3B+magnetic+signatures+in+the+solar+system&rft.au=Purucker%2C+Michael+E%3BAnonymous&rft.aulast=Purucker&rft.aufirst=Michael&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2017-01-01 N1 - Number of references - 61 N1 - PubXState - DC N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2017-02-02 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - conductivity; electrical conductivity; electrical field; electrical methods; electromagnetic induction; electromagnetic methods; geologic hazards; geologic hazards maps; geophysical methods; induction; magnetic field; magnetic methods; magnetic storms; magnetotelluric methods; maps; natural hazards; storms; United States; waveforms DO - http://dx.doi.org/10.1002/2016GL070469 ER - TY - JOUR T1 - In situ and space-based observations of the Kelud volcanic plume; the persistence of ash in the lower stratosphere AN - 1844923613; 2016-101601 AB - Volcanic eruptions are important causes of natural variability in the climate system at all time scales. Assessments of the climate impact of volcanic eruptions by climate models almost universally assume that sulfate aerosol is the only radiatively active volcanic material. We report satellite observations from the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) on board the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) satellite after the eruption of Mount Kelud (Indonesia) on 13 February 2014 of volcanic materials in the lower stratosphere. Using these observations along with in situ measurements with the Compact Optical Backscatter AerosoL Detector (COBALD) backscatter sondes and optical particle counters (OPCs) made during a balloon field campaign in northern Australia, we find that fine ash particles with a radius below 0.3 mu m likely represented between 20 and 28% of the total volcanic cloud aerosol optical depth 3 months after the eruption. A separation of 1.5-2 km between the ash and sulfate plumes is observed in the CALIOP extinction profiles as well as in the aerosol number concentration measurements of the OPC after 3 months. The settling velocity of fine ash with a radius of 0.3 mu m in the tropical lower stratosphere is reduced by 50% due to the upward motion of the Brewer-Dobson circulation resulting a doubling of its lifetime. Three months after the eruption, we find a mean tropical clear-sky radiative forcing at the top of the atmosphere from the Kelud plume near -0.08 W/m (super 2) after including the presence of ash; a value approximately 20% higher than if sulfate alone is considered. Thus, surface cooling following volcanic eruptions could be affected by the persistence of ash and should be considered in climate simulations. Abstract Copyright (2016), . The Authors. JF - Journal of Geophysical Research: Atmospheres AU - Vernier, Jean-Paul AU - Fairlie, T Duncan AU - Deshler, Terry AU - Natarajan, Murali AU - Knepp, Travis AU - Foster, Katie AU - Wienhold, Frank G AU - Bedka, Kristopher M AU - Thomason, Larry AU - Trepte, Charles Y1 - 2016/09/27/ PY - 2016 DA - 2016 Sep 27 SP - 11 EP - 11,118 PB - Blackwell Wiley for American Geophysical Union, Washington, DC VL - 121 IS - 18 SN - 2169-897X, 2169-897X KW - plumes KW - Far East KW - volcanic rocks KW - igneous rocks KW - Indonesia KW - atmosphere KW - global change KW - CALIPSO KW - satellite methods KW - Java KW - climate change KW - temperature KW - pyroclastics KW - stratosphere KW - solar radiation KW - climate effects KW - Kelud KW - aerosols KW - volcanic ash KW - Asia KW - remote sensing KW - MODIS KW - global warming KW - 20:Applied geophysics KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1844923613?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=In+situ+and+space-based+observations+of+the+Kelud+volcanic+plume%3B+the+persistence+of+ash+in+the+lower+stratosphere&rft.au=Vernier%2C+Jean-Paul%3BFairlie%2C+T+Duncan%3BDeshler%2C+Terry%3BNatarajan%2C+Murali%3BKnepp%2C+Travis%3BFoster%2C+Katie%3BWienhold%2C+Frank+G%3BBedka%2C+Kristopher+M%3BThomason%2C+Larry%3BTrepte%2C+Charles&rft.aulast=Vernier&rft.aufirst=Jean-Paul&rft.date=2016-09-27&rft.volume=121&rft.issue=18&rft.spage=11&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2016JD025344 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-8996 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 52 N1 - PubXState - DC N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2016-12-01 N1 - SubjectsTermNotLitGenreText - aerosols; Asia; atmosphere; CALIPSO; climate change; climate effects; Far East; global change; global warming; igneous rocks; Indonesia; Java; Kelud; MODIS; plumes; pyroclastics; remote sensing; satellite methods; solar radiation; stratosphere; temperature; volcanic ash; volcanic rocks DO - http://dx.doi.org/10.1002/2016JD025344 ER - TY - NEWS T1 - Antarctica Provides ICE to Study Behavior Effects in Astronauts AN - 1821633921 JF - UPI Space Daily AU - Monica Edwards and Charles Lloyd for NASA News Y1 - 2016/09/21/ PY - 2016 DA - 2016 Sep 21 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1821633921?accountid=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=Antarctica+Provides+ICE+to+Study+Behavior+Effects+in+Astronauts&rft.au=Monica+Edwards+and+Charles+Lloyd+for+NASA+News&rft.aulast=Monica+Edwards+and+Charles+Lloyd+for+NASA+News&rft.aufirst=&rft.date=2016-09-21&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2016-09-21 ER - TY - JOUR T1 - The response of Phanerozoic surface temperature to variations in atmospheric oxygen concentration AN - 1844920883; 2016-103515 AB - Recently, Poulsen et al. (2015) suggested that O (sub 2) has played a major role in climate forcing during the Phanerozoic. Specifically, they argued that decreased O (sub 2) levels during the Cenomanian stage of the middle Cretaceous (94-100 Ma) could help explain the extremely warm climate during that time. The postulated warming mechanism involves decreased Rayleigh scattering by a thinner atmosphere, which reduces the planetary albedo and allows greater surface warming. This warming effect is then amplified by cloud feedbacks within their 3-D climate model. This increase in shortwave surface forcing, in their calculations, exceeds any decrease in the greenhouse effect caused by decreased O (sub 2) . Here we use a 1-D radiative-convective climate model (with no cloud feedback) to check their results. We also include a self-consistent calculation of the change in atmospheric ozone and its effect on climate. Our results are opposite to those of Poulsen et al.: we find that the climate warms by 1.4 K at 35% O (sub 2) concentrations as a result of increased pressure broadening of CO (sub 2) and H (sub 2) O absorption lines and cools by 0.8 K at 10% O (sub 2) as a result of decreased pressure broadening. The surface temperature changes are only about 1 K either way, though, for reasonable variations in Phanerozoic O (sub 2) concentrations (10%-35% by volume). Hence, it seems unlikely that changes in atmospheric O (sub 2) account for the warm climate of the Cenomanian. Other factors, such as a higher-than-expected sensitivity of climate to increased CO (sub 2) concentrations, may be required to obtain agreement with the paleoclimate data. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Atmospheres AU - Payne, Rebecca C AU - Britt, Amber V AU - Chen, Howard AU - Kasting, James F AU - Catling, David C Y1 - 2016/09/16/ PY - 2016 DA - 2016 Sep 16 SP - 10 EP - 10,096 PB - Blackwell Wiley for American Geophysical Union, Washington, DC VL - 121 IS - 17 SN - 2169-897X, 2169-897X KW - albedo KW - Phanerozoic KW - oxygen KW - paleoatmosphere KW - solar radiation KW - atmosphere KW - ground-surface temperature KW - paleoclimatology KW - GENESIS model KW - climate change KW - carbon dioxide KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1844920883?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+response+of+Phanerozoic+surface+temperature+to+variations+in+atmospheric+oxygen+concentration&rft.au=Payne%2C+Rebecca+C%3BBritt%2C+Amber+V%3BChen%2C+Howard%3BKasting%2C+James+F%3BCatling%2C+David+C&rft.aulast=Payne&rft.aufirst=Rebecca&rft.date=2016-09-16&rft.volume=121&rft.issue=17&rft.spage=10&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2016JD025459 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-8996 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 18 N1 - PubXState - DC N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2016-12-01 N1 - SubjectsTermNotLitGenreText - albedo; atmosphere; carbon dioxide; climate change; GENESIS model; ground-surface temperature; oxygen; paleoatmosphere; paleoclimatology; Phanerozoic; solar radiation DO - http://dx.doi.org/10.1002/2016JD025459 ER - TY - JOUR T1 - Impact of climate indicators on continental-scale potential groundwater recharge in Africa AN - 1840621143; 2016-096561 AB - In the last decades, human activity has been contributing to climate change that is closely associated with an increase in temperatures, increase in evaporation, intensification of extreme dry and wet rainfall events, and widespread melting of snow and ice. Understanding the intricate linkage between climate warming and the hydrological cycle is crucial for sustainable management of groundwater resources, especially in a vulnerable continent like Africa. This study investigates the relationship between climate-change drivers and potential groundwater recharge (PGR) patterns across Africa for a long-term record (1960-2010). Water-balance components were simulated by using the PCR-GLOBWB model and were reproduced in both gridded maps and latitudinal trends that vary in space with minima on the Tropics and maxima around the Equator. Statistical correlations between temperature, storm occurrences, drought, and PGR were examined in six climatic regions of Africa. Surprisingly, different effects of climate-change controls on PGR were detected as a function of latitude in the last three decades (1980-2010). Temporal trends observed in the Northern Hemisphere of Africa reveal that the increase in temperature is significantly correlated to the decline of PGR, especially in the Northern Equatorial Africa. The climate indicators considered in this study were unable to explain the alarming negative trend of PGR observed in the Sahelian region, even though the Standardized Precipitation-Evapotranspiration Index (SPEI) values report a 15% drought stress. On the other hand, increases in temperature have not been detected in the Southern Hemisphere of Africa, where increasing frequency of storm occurrences determine a rise of PGR, particularly in southern Africa. Time analysis highlights a strong seasonality effect, while PGR is in-phase with rainfall patterns in the summer (Northern Hemisphere) and winter (Southern Hemisphere) and out-of-phase during the fall season. This study helps to elucidate the mechanism of the processes influencing groundwater resources in six climatic zones of Africa, even though modelling results need to be validated more extensively with direct measurements in future studies. Copyright Copyright 2016 John Wiley & Sons, Ltd. JF - Hydrological Processes AU - Nasta, Paolo AU - Gates, John B AU - Wada, Yoshihide Y1 - 2016/09/15/ PY - 2016 DA - 2016 Sep 15 SP - 3420 EP - 3433 PB - Wiley-Blackwell, New York, NY VL - 30 IS - 19 SN - 0885-6087, 0885-6087 KW - water quality KW - PCRaster-GLOBal Water Balance model KW - climatic controls KW - pumping KW - water management KW - unsaturated zone KW - global change KW - climate change KW - ground water KW - drought KW - hydrologic cycle KW - storms KW - PCR-GLOBWB model KW - global warming KW - hydrology KW - Nash-Sutcliffe Efficiency Index KW - snowmelt KW - rainfall KW - human activity KW - water balance KW - indicators KW - evapotranspiration KW - aquifers KW - recharge KW - Southern Africa KW - Africa KW - shallow aquifers KW - seasonal variations KW - water resources KW - Sahel KW - 21:Hydrogeology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840621143?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrological+Processes&rft.atitle=Impact+of+climate+indicators+on+continental-scale+potential+groundwater+recharge+in+Africa&rft.au=Nasta%2C+Paolo%3BGates%2C+John+B%3BWada%2C+Yoshihide&rft.aulast=Nasta&rft.aufirst=Paolo&rft.date=2016-09-15&rft.volume=30&rft.issue=19&rft.spage=3420&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.10869 L2 - http://www3.interscience.wiley.com/cgi-bin/jhome/4125 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 85 N1 - PubXState - NY N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2016-11-17 N1 - SubjectsTermNotLitGenreText - Africa; aquifers; climate change; climatic controls; drought; evapotranspiration; global change; global warming; ground water; human activity; hydrologic cycle; hydrology; indicators; Nash-Sutcliffe Efficiency Index; PCR-GLOBWB model; PCRaster-GLOBal Water Balance model; pumping; rainfall; recharge; Sahel; seasonal variations; shallow aquifers; snowmelt; Southern Africa; storms; unsaturated zone; water balance; water management; water quality; water resources DO - http://dx.doi.org/10.1002/hyp.10869 ER - TY - JOUR T1 - The geophysical environment of Bennu AN - 1815670055; 2016-076289 JF - Icarus AU - Scheeres, D J AU - Hesar, S G AU - Tardivel, S AU - Hirabayashi, M AU - Farnocchia, D AU - McMahon, J W AU - Chesley, S R AU - Barnouin, O AU - Binzel, R P AU - Bottke, W F AU - Daly, M G AU - Emery, J P AU - Hergenrother, C W AU - Lauretta, D S AU - Marshall, J R AU - Michel, P AU - Nolan, M C AU - Walsh, K J Y1 - 2016/09/15/ PY - 2016 DA - 2016 Sep 15 SP - 116 EP - 140 PB - Elsevier, New York, NY VL - 276 SN - 0019-1035, 0019-1035 KW - density KW - asteroids KW - slopes KW - altitude KW - OSIRIS-REx Mission KW - Bennu Asteroid KW - rubble-pile asteroids KW - porosity KW - geometry KW - morphology KW - models KW - mass KW - landslides KW - gravity field KW - topography KW - rotation KW - mass movements KW - velocity KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815670055?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+geophysical+environment+of+Bennu&rft.au=Scheeres%2C+D+J%3BHesar%2C+S+G%3BTardivel%2C+S%3BHirabayashi%2C+M%3BFarnocchia%2C+D%3BMcMahon%2C+J+W%3BChesley%2C+S+R%3BBarnouin%2C+O%3BBinzel%2C+R+P%3BBottke%2C+W+F%3BDaly%2C+M+G%3BEmery%2C+J+P%3BHergenrother%2C+C+W%3BLauretta%2C+D+S%3BMarshall%2C+J+R%3BMichel%2C+P%3BNolan%2C+M+C%3BWalsh%2C+K+J&rft.aulast=Scheeres&rft.aufirst=D&rft.date=2016-09-15&rft.volume=276&rft.issue=&rft.spage=116&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.04.013 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 86 N1 - PubXState - NY N1 - Document feature - illus. incl. 6 tables N1 - Last updated - 2016-09-01 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - altitude; asteroids; Bennu Asteroid; density; geometry; gravity field; landslides; mass; mass movements; models; morphology; OSIRIS-REx Mission; porosity; rotation; rubble-pile asteroids; slopes; topography; velocity DO - http://dx.doi.org/10.1016/j.icarus.2016.04.013 ER - TY - JOUR T1 - Aliphatic amines in Antarctic CR2, CM2, and CM1/2 carbonaceous chondrites AN - 1815670037; 2016-076824 AB - Meteoritic water-soluble organic compounds provide a unique record of the processes that occurred during the formation of the solar system and the chemistry preceding the origins of life on Earth. We have investigated the molecular distribution, compound-specific delta (super 13) C isotopic ratios and enantiomeric compositions of aliphatic monoamines present in the hot acid-water extracts of the carbonaceous chondrites LAP 02342 (CR2), GRA 95229 (CR2), LON 94101 (CM2), LEW 90500 (CM2), and ALH 83100 (CM1/2). Analyses of the concentration of monoamines in these meteorites revealed: (a) the CR2 chondrites studied here contain higher concentrations of monoamines relative to the analyzed CM2 chondrites; (b) the concentration of monoamines decreases with increasing carbon number; and (c) isopropylamine is the most abundant monoamine in these CR2 chondrites, while methylamine is the most abundant amine species in these CM2 and CM1/2 chondrites. The delta (super 13) C values of monoamines in CR2 chondrite do not correlate with the number of carbon atoms; however, in CM2 and CM1/2 chondrites, the (super 13) C enrichment decreases with increasing monoamine carbon number. The delta (super 13) C values of methylamine in CR2 chondrites ranged from -1 to +10 ppm, while in CM2 and CM1/2 chondrites the delta (super 13) C values of methylamine ranged from +41 to +59 ppm. We also observed racemic compositions of sec-butylamine, 3-methyl-2-butylamine, and sec-pentylamine in the studied carbonaceous chondrites. Additionally, we compared the abundance and delta (super 13) C isotopic composition of monoamines to those of their structurally related amino acids. We found that monoamines are less abundant than amino acids in CR2 chondrites, with the opposite being true in CM2 and CM1/2 chondrites. We used these collective data to evaluate different primordial synthetic pathways for monoamines in carbonaceous chondrites and to understand the potential common origins these molecules may share with meteoritic amino acids. JF - Geochimica et Cosmochimica Acta AU - Aponte, Jose C AU - McLain, Hannah L AU - Dworkin, Jason P AU - Elsila, Jamie E Y1 - 2016/09/15/ PY - 2016 DA - 2016 Sep 15 SP - 296 EP - 311 PB - Elsevier, New York, NY VL - 189 SN - 0016-7037, 0016-7037 KW - stony meteorites KW - isotopes KW - Lewis Cliff Meteorites KW - aliphatic amines KW - LaPaz Icefield Meteorites KW - gas chromatograms KW - mass spectra KW - astrobiology KW - stable isotopes KW - meteorites KW - amines KW - CR chondrites KW - carbon KW - spectra KW - chondrites KW - isotope ratios KW - biochemistry KW - C-13/C-12 KW - statistical analysis KW - cosmochemistry KW - carbonaceous chondrites KW - organic compounds KW - Allan Hills Meteorites KW - Antarctica KW - chromatograms KW - CM chondrites KW - 05B:Petrology of meteorites and tektites KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815670037?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Aliphatic+amines+in+Antarctic+CR2%2C+CM2%2C+and+CM1%2F2+carbonaceous+chondrites&rft.au=Aponte%2C+Jose+C%3BMcLain%2C+Hannah+L%3BDworkin%2C+Jason+P%3BElsila%2C+Jamie+E&rft.aulast=Aponte&rft.aufirst=Jose&rft.date=2016-09-15&rft.volume=189&rft.issue=&rft.spage=296&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2016.06.018 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 78 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-09-01 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - aliphatic amines; Allan Hills Meteorites; amines; Antarctica; astrobiology; biochemistry; C-13/C-12; carbon; carbonaceous chondrites; chondrites; chromatograms; CM chondrites; cosmochemistry; CR chondrites; gas chromatograms; isotope ratios; isotopes; LaPaz Icefield Meteorites; Lewis Cliff Meteorites; mass spectra; meteorites; organic compounds; spectra; stable isotopes; statistical analysis; stony meteorites DO - http://dx.doi.org/10.1016/j.gca.2016.06.018 ER - TY - JOUR T1 - Distribution of phyllosilicates on the surface of Ceres AN - 1832728349; 2016-092806 AB - The dwarf planet Ceres is known to host phyllosilicate minerals at its surface, but their distribution and origin have not previously been determined. We used the spectrometer onboard the Dawn spacecraft to map their spatial distribution on the basis of diagnostic absorption features in the visible and near-infrared spectral range (0.25 to 5.0 micrometers). We found that magnesium- and ammonium-bearing minerals are ubiquitous across the surface. Variations in the strength of the absorption features are spatially correlated and indicate considerable variability in the relative abundance of the phyllosilicates, although their composition is fairly uniform. These data, along with the distinctive spectral properties of Ceres relative to other asteroids and carbonaceous meteorites, indicate that the phyllosilicates were formed endogenously by a globally widespread and extensive alteration process. JF - Science AU - Ammannito, Eleonora AU - De Sanctis, Maria Cristina AU - Ciarniello, M AU - Frigeri, A AU - Carrozzo, Filippo Giacomo AU - Combe, Jean-Philippe AU - Ehlmann, B L AU - Marchi, Simone AU - McSween, Harry Y AU - Raponi, Andrea AU - Toplis, M J AU - Tosi, F AU - Castillo-Rogez, J C AU - Capaccioni, F AU - Capria, M T AU - Fonte, S AU - Giardino, M AU - Jaumann, Ralf AU - Longobardo, A AU - Joy, S P AU - Magni, G AU - McCord, Thomas B AU - McFadden, Lucy A AU - Palomba, E AU - Pieters, C M AU - Polanskey, C A AU - Rayman, M D AU - Raymond, C A AU - Schenk, P M AU - Zambon, F AU - Russell, C T Y1 - 2016/09/02/ PY - 2016 DA - 2016 Sep 02 SP - 1006 PB - American Association for the Advancement of Science, Washington, DC VL - 353 IS - 6303 SN - 0036-8075, 0036-8075 KW - silicates KW - near-infrared spectra KW - Ceres KW - asteroids KW - mapping KW - distribution KW - Dawn Mission KW - dwarf planets KW - spatial distribution KW - absorption KW - mineral composition KW - surface features KW - sheet silicates KW - spectra KW - orbital observations KW - reflectance KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832728349?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Distribution+of+phyllosilicates+on+the+surface+of+Ceres&rft.au=Ammannito%2C+Eleonora%3BDe+Sanctis%2C+Maria+Cristina%3BCiarniello%2C+M%3BFrigeri%2C+A%3BCarrozzo%2C+Filippo+Giacomo%3BCombe%2C+Jean-Philippe%3BEhlmann%2C+B+L%3BMarchi%2C+Simone%3BMcSween%2C+Harry+Y%3BRaponi%2C+Andrea%3BToplis%2C+M+J%3BTosi%2C+F%3BCastillo-Rogez%2C+J+C%3BCapaccioni%2C+F%3BCapria%2C+M+T%3BFonte%2C+S%3BGiardino%2C+M%3BJaumann%2C+Ralf%3BLongobardo%2C+A%3BJoy%2C+S+P%3BMagni%2C+G%3BMcCord%2C+Thomas+B%3BMcFadden%2C+Lucy+A%3BPalomba%2C+E%3BPieters%2C+C+M%3BPolanskey%2C+C+A%3BRayman%2C+M+D%3BRaymond%2C+C+A%3BSchenk%2C+P+M%3BZambon%2C+F%3BRussell%2C+C+T&rft.aulast=Ammannito&rft.aufirst=Eleonora&rft.date=2016-09-02&rft.volume=353&rft.issue=6303&rft.spage=1006&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.aaf4279 L2 - http://www.sciencemag.org/magazine LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 29 N1 - PubXState - DC N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2016-10-27 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - absorption; asteroids; Ceres; Dawn Mission; distribution; dwarf planets; mapping; mineral composition; near-infrared spectra; orbital observations; reflectance; sheet silicates; silicates; spatial distribution; spectra; surface features DO - http://dx.doi.org/10.1126/science.aaf4279 ER - TY - JOUR T1 - Cryovolcanism on Ceres AN - 1832728188; 2016-092807 AB - Volcanic edifices are abundant on rocky bodies of the inner solar system. In the cold outer solar system, volcanism can occur on solid bodies with a water-ice shell, but derived cryovolcanic constructs have proved elusive. We report the discovery, using Dawn Framing Camera images, of a landform on dwarf planet Ceres that we argue represents a viscous cryovolcanic dome. Parent material of the cryomagma is a mixture of secondary minerals, including salts and water ice. Absolute model ages from impact craters reveal that extrusion of the dome has occurred recently. Ceres' evolution must have been able to sustain recent interior activity and associated surface expressions. We propose salts with low eutectic temperatures and thermal conductivities as key drivers for Ceres' long-term internal evolution. JF - Science AU - Ruesch, Ottaviano AU - Platz, T AU - Schenk, P M AU - McFadden, Lucy A AU - Castillo-Rogez, J C AU - Quick, L C AU - Byrne, S AU - Preusker, F AU - O'Brien, D P AU - Schmedemann, N AU - Williams, D A AU - Li, J Y AU - Bland, M T AU - Hiesinger, Harald AU - Kneissl, Thomas AU - Neesemann, A AU - Schaefer, M AU - Pasckert, J H AU - Schmidt, B E AU - Buczkowski, Debra L AU - Sykes, M V AU - Nathues, Andreas AU - Roatsch, T AU - Hoffmann, M AU - Raymond, C A AU - Russell, C T Y1 - 2016/09/02/ PY - 2016 DA - 2016 Sep 02 SP - 1005 PB - American Association for the Advancement of Science, Washington, DC VL - 353 IS - 6303 SN - 0036-8075, 0036-8075 KW - cryovolcanism KW - imagery KW - impact features KW - Ceres KW - asteroids KW - mapping KW - landforms KW - Dawn Mission KW - dwarf planets KW - models KW - lava domes KW - volcanic features KW - magmas KW - age KW - volcanoes KW - impact craters KW - orbital observations KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832728188?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Cryovolcanism+on+Ceres&rft.au=Ruesch%2C+Ottaviano%3BPlatz%2C+T%3BSchenk%2C+P+M%3BMcFadden%2C+Lucy+A%3BCastillo-Rogez%2C+J+C%3BQuick%2C+L+C%3BByrne%2C+S%3BPreusker%2C+F%3BO%27Brien%2C+D+P%3BSchmedemann%2C+N%3BWilliams%2C+D+A%3BLi%2C+J+Y%3BBland%2C+M+T%3BHiesinger%2C+Harald%3BKneissl%2C+Thomas%3BNeesemann%2C+A%3BSchaefer%2C+M%3BPasckert%2C+J+H%3BSchmidt%2C+B+E%3BBuczkowski%2C+Debra+L%3BSykes%2C+M+V%3BNathues%2C+Andreas%3BRoatsch%2C+T%3BHoffmann%2C+M%3BRaymond%2C+C+A%3BRussell%2C+C+T&rft.aulast=Ruesch&rft.aufirst=Ottaviano&rft.date=2016-09-02&rft.volume=353&rft.issue=6303&rft.spage=1005&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.aaf4286 L2 - http://www.sciencemag.org/magazine LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 53 N1 - PubXState - DC N1 - Document feature - illus. incl. geol. sketch maps N1 - SuppNotes - Full text available only online N1 - Last updated - 2016-10-27 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - age; asteroids; Ceres; cryovolcanism; Dawn Mission; dwarf planets; imagery; impact craters; impact features; landforms; lava domes; magmas; mapping; models; orbital observations; volcanic features; volcanoes DO - http://dx.doi.org/10.1126/science.aaf4286 ER - TY - JOUR T1 - The geomorphology of Ceres AN - 1832727644; 2016-092808 AB - Analysis of Dawn spacecraft Framing Camera image data allows evaluation of the topography and geomorphology of features on the surface of Ceres. The dwarf planet is dominated by numerous craters, but other features are also common. Linear structures include both those associated with impact craters and those that do not appear to have any correlation to an impact event. Abundant lobate flows are identified, and numerous domical features are found at a range of scales. Features suggestive of near-surface ice, cryomagmatism, and cryovolcanism have been identified. Although spectroscopic analysis has currently detected surface water ice at only one location on Ceres, the identification of these potentially ice-related features suggests that there may be at least some ice in localized regions in the crust. JF - Science AU - Buczkowski, Debra L AU - Schmidt, B E AU - Williams, D A AU - Mest, Scott C AU - Scully, Jennifer E C AU - Ermakov, A I AU - Preusker, F AU - Schenk, P M AU - Otto, K A AU - Hiesinger, Harald AU - O'Brien, D P AU - Marchi, Simone AU - Sizemore, H AU - Hughson, Kynan H G AU - Chilton, H AU - Bland, M T AU - Byrne, S AU - Schorghofer, N AU - Platz, T AU - Jaumann, Ralf AU - Roatsch, T AU - Sykes, M V AU - Nathues, Andreas AU - De Sanctis, Maria Cristina AU - Raymond, C A AU - Russell, C T Y1 - 2016/09/02/ PY - 2016 DA - 2016 Sep 02 SP - 1004 PB - American Association for the Advancement of Science, Washington, DC VL - 353 IS - 6303 SN - 0036-8075, 0036-8075 KW - water KW - cryovolcanism KW - imagery KW - impact features KW - Ceres KW - asteroids KW - mapping KW - landforms KW - cryomagmatism KW - Dawn Mission KW - dwarf planets KW - topography KW - surface features KW - impact craters KW - orbital observations KW - geomorphology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832727644?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+geomorphology+of+Ceres&rft.au=Buczkowski%2C+Debra+L%3BSchmidt%2C+B+E%3BWilliams%2C+D+A%3BMest%2C+Scott+C%3BScully%2C+Jennifer+E+C%3BErmakov%2C+A+I%3BPreusker%2C+F%3BSchenk%2C+P+M%3BOtto%2C+K+A%3BHiesinger%2C+Harald%3BO%27Brien%2C+D+P%3BMarchi%2C+Simone%3BSizemore%2C+H%3BHughson%2C+Kynan+H+G%3BChilton%2C+H%3BBland%2C+M+T%3BByrne%2C+S%3BSchorghofer%2C+N%3BPlatz%2C+T%3BJaumann%2C+Ralf%3BRoatsch%2C+T%3BSykes%2C+M+V%3BNathues%2C+Andreas%3BDe+Sanctis%2C+Maria+Cristina%3BRaymond%2C+C+A%3BRussell%2C+C+T&rft.aulast=Buczkowski&rft.aufirst=Debra&rft.date=2016-09-02&rft.volume=353&rft.issue=6303&rft.spage=1004&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.aaf4332 L2 - http://www.sciencemag.org/magazine LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 48 N1 - PubXState - DC N1 - Document feature - illus. incl. geol. sketch maps N1 - Last updated - 2016-10-27 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - asteroids; Ceres; cryomagmatism; cryovolcanism; Dawn Mission; dwarf planets; geomorphology; imagery; impact craters; impact features; landforms; mapping; orbital observations; surface features; topography; water DO - http://dx.doi.org/10.1126/science.aaf4332 ER - TY - JOUR T1 - Dawn arrives at Ceres; exploration of a small, volatile-rich world AN - 1832727637; 2016-092810 AB - On 6 March 2015, Dawn arrived at Ceres to find a dark, desiccated surface punctuated by small, bright areas. Parts of Ceres' surface are heavily cratered, but the largest expected craters are absent. Ceres appears gravitationally relaxed at only the longest wavelengths, implying a mechanically strong lithosphere with a weaker deep interior. Ceres' dry exterior displays hydroxylated silicates, including ammoniated clays of endogenous origin. The possibility of abundant volatiles at depth is supported by geomorphologic features such as flat crater floors with pits, lobate flows of materials, and a singular mountain that appears to be an extrusive cryovolcanic dome. On one occasion, Ceres temporarily interacted with the solar wind, producing a bow shock accelerating electrons to energies of tens of kilovolts. JF - Science AU - Russell, C T AU - Raymond, C A AU - Ammannito, Eleonora AU - Buczkowski, Debra L AU - De Sanctis, Maria Cristina AU - Hiesinger, Harald AU - Jaumann, Ralf AU - Konopliv, A S AU - McSween, Harry Y AU - Nathues, Andreas AU - Park, R S AU - Pieters, C M AU - Prettyman, T H AU - McCord, Thomas B AU - McFadden, Lucy A AU - Mottola, S AU - Zuber, M T AU - Joy, S P AU - Polanskey, C AU - Rayman, M D AU - Castillo-Rogez, J C AU - Chi, P J AU - Combe, Jean-Philippe AU - Ermakov, A AU - Fu, Roger R AU - Hoffmann, M AU - Jia, Y D AU - King, S D AU - Lawrence, David J AU - Li, J Y AU - Marchi, Simone AU - Preusker, F AU - Roatsch, T AU - Ruesch, Ottaviano AU - Schenk, P M AU - Villarreal, M N AU - Yamashita, N Y1 - 2016/09/02/ PY - 2016 DA - 2016 Sep 02 SP - 1008 EP - 1010 PB - American Association for the Advancement of Science, Washington, DC VL - 353 IS - 6303 SN - 0036-8075, 0036-8075 KW - silicates KW - cryovolcanism KW - imagery KW - impact features KW - Ceres KW - asteroids KW - Dawn Mission KW - dwarf planets KW - relief KW - exploration KW - volatiles KW - mineral composition KW - planetary interiors KW - surface features KW - impact craters KW - orbital observations KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832727637?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Dawn+arrives+at+Ceres%3B+exploration+of+a+small%2C+volatile-rich+world&rft.au=Russell%2C+C+T%3BRaymond%2C+C+A%3BAmmannito%2C+Eleonora%3BBuczkowski%2C+Debra+L%3BDe+Sanctis%2C+Maria+Cristina%3BHiesinger%2C+Harald%3BJaumann%2C+Ralf%3BKonopliv%2C+A+S%3BMcSween%2C+Harry+Y%3BNathues%2C+Andreas%3BPark%2C+R+S%3BPieters%2C+C+M%3BPrettyman%2C+T+H%3BMcCord%2C+Thomas+B%3BMcFadden%2C+Lucy+A%3BMottola%2C+S%3BZuber%2C+M+T%3BJoy%2C+S+P%3BPolanskey%2C+C%3BRayman%2C+M+D%3BCastillo-Rogez%2C+J+C%3BChi%2C+P+J%3BCombe%2C+Jean-Philippe%3BErmakov%2C+A%3BFu%2C+Roger+R%3BHoffmann%2C+M%3BJia%2C+Y+D%3BKing%2C+S+D%3BLawrence%2C+David+J%3BLi%2C+J+Y%3BMarchi%2C+Simone%3BPreusker%2C+F%3BRoatsch%2C+T%3BRuesch%2C+Ottaviano%3BSchenk%2C+P+M%3BVillarreal%2C+M+N%3BYamashita%2C+N&rft.aulast=Russell&rft.aufirst=C&rft.date=2016-09-02&rft.volume=353&rft.issue=6303&rft.spage=1008&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.aaf4219 L2 - http://www.sciencemag.org/magazine LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 28 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2016-10-27 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - asteroids; Ceres; cryovolcanism; Dawn Mission; dwarf planets; exploration; imagery; impact craters; impact features; mineral composition; orbital observations; planetary interiors; relief; silicates; surface features; volatiles DO - http://dx.doi.org/10.1126/science.aaf4219 ER - TY - JOUR T1 - Cratering on Ceres; implications for its crust and evolution AN - 1832727557; 2016-092809 AB - Thermochemical models have predicted that Ceres, is to some extent, differentiated and should have an icy crust with few or no impact craters. We present observations by the Dawn spacecraft that reveal a heavily cratered surface, a heterogeneous crater distribution, and an apparent absence of large craters. The morphology of some impact craters is consistent with ice in the subsurface, which might have favored relaxation, yet large unrelaxed craters are also present. Numerous craters exhibit polygonal shapes, terraces, flowlike features, slumping, smooth deposits, and bright spots. Crater morphology and simple-to-complex crater transition diameters indicate that the crust of Ceres is neither purely icy nor rocky. By dating a smooth region associated with the Kerwan crater, we determined absolute model ages (AMAs) of 550 million and 720 million years, depending on the applied chronology model. JF - Science AU - Hiesinger, Harald AU - Marchi, Simone AU - Schmedemann, N AU - Schenk, P M AU - Pasckert, J H AU - Neesemann, A AU - O'Brien, D P AU - Kneissl, Thomas AU - Ermakov, A I AU - Fu, Roger R AU - Bland, M T AU - Nathues, Andreas AU - Platz, T AU - Williams, D A AU - Jaumann, Ralf AU - Castillo-Rogez, J C AU - Ruesch, Ottaviano AU - Schmidt, B E AU - Park, R S AU - Preusker, F AU - Buczkowski, Debra L AU - Russell, C T AU - Raymond, C A Y1 - 2016/09/02/ PY - 2016 DA - 2016 Sep 02 SP - 1003 PB - American Association for the Advancement of Science, Washington, DC VL - 353 IS - 6303 SN - 0036-8075, 0036-8075 KW - systems KW - impact features KW - Ceres KW - asteroids KW - digital terrain models KW - Dawn Mission KW - dwarf planets KW - grabens KW - morphology KW - models KW - surface features KW - impact craters KW - thermochemical properties KW - faults KW - crust KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832727557?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Cratering+on+Ceres%3B+implications+for+its+crust+and+evolution&rft.au=Hiesinger%2C+Harald%3BMarchi%2C+Simone%3BSchmedemann%2C+N%3BSchenk%2C+P+M%3BPasckert%2C+J+H%3BNeesemann%2C+A%3BO%27Brien%2C+D+P%3BKneissl%2C+Thomas%3BErmakov%2C+A+I%3BFu%2C+Roger+R%3BBland%2C+M+T%3BNathues%2C+Andreas%3BPlatz%2C+T%3BWilliams%2C+D+A%3BJaumann%2C+Ralf%3BCastillo-Rogez%2C+J+C%3BRuesch%2C+Ottaviano%3BSchmidt%2C+B+E%3BPark%2C+R+S%3BPreusker%2C+F%3BBuczkowski%2C+Debra+L%3BRussell%2C+C+T%3BRaymond%2C+C+A&rft.aulast=Hiesinger&rft.aufirst=Harald&rft.date=2016-09-02&rft.volume=353&rft.issue=6303&rft.spage=1003&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.aaf4759 L2 - http://www.sciencemag.org/magazine LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 70 N1 - PubXState - DC N1 - Document feature - illus. incl. geol. sketch maps N1 - Last updated - 2016-10-27 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - asteroids; Ceres; crust; Dawn Mission; digital terrain models; dwarf planets; faults; grabens; impact craters; impact features; models; morphology; surface features; systems; thermochemical properties DO - http://dx.doi.org/10.1126/science.aaf4759 ER - TY - JOUR T1 - Precipitation estimation using L-band and C-band soil moisture retrievals AN - 1863566621; 2017-008646 AB - An established methodology for estimating precipitation amounts from satellite-based soil moisture retrievals is applied to L-band products from the Soil Moisture Active Passive (SMAP) and Soil Moisture and Ocean Salinity (SMOS) satellite missions and to a C-band product from the Advanced Scatterometer (ASCAT) mission. The precipitation estimates so obtained are evaluated against in situ (gauge-based) precipitation observations from across the globe. The precipitation estimation skill achieved using the L-band SMAP and SMOS data sets is higher than that obtained with the C-band product, as might be expected given that L-band is sensitive to a thicker layer of soil and thereby provides more information on the response of soil moisture to precipitation. The square of the correlation coefficient between the SMAP-based precipitation estimates and the observations (for aggregations to approximately 100 km and 5 days) is on average about 0.6 in areas of high rain gauge density. Satellite missions specifically designed to monitor soil moisture thus do provide significant information on precipitation variability, information that could contribute to efforts in global precipitation estimation. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Water Resources Research AU - Koster, Randal D AU - Brocca, Luca AU - Crow, Wade T AU - Burgin, Mariko S AU - de Lannoy, Gabrielle J M Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 7213 EP - 7225 PB - American Geophysical Union, Washington, DC VL - 52 IS - 9 SN - 0043-1397, 0043-1397 KW - soils KW - hydrology KW - gauging KW - monitoring KW - moisture KW - global KW - mapping KW - atmospheric precipitation KW - satellite methods KW - algorithms KW - rain KW - remote sensing KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1863566621?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Precipitation+estimation+using+L-band+and+C-band+soil+moisture+retrievals&rft.au=Koster%2C+Randal+D%3BBrocca%2C+Luca%3BCrow%2C+Wade+T%3BBurgin%2C+Mariko+S%3Bde+Lannoy%2C+Gabrielle+J+M&rft.aulast=Koster&rft.aufirst=Randal&rft.date=2016-09-01&rft.volume=52&rft.issue=9&rft.spage=7213&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1002%2F2016WR019024 L2 - http://www.agu.org/journals/wr/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2017-01-01 N1 - Number of references - 28 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2017-02-02 N1 - CODEN - WRERAQ N1 - SubjectsTermNotLitGenreText - algorithms; atmospheric precipitation; gauging; global; hydrology; mapping; moisture; monitoring; rain; remote sensing; satellite methods; soils DO - http://dx.doi.org/10.1002/2016WR019024 ER - TY - JOUR T1 - Influence of measurement uncertainties on fractional solubility of iron in mineral aerosols over the oceans AN - 1861083197; 785490-8 AB - The atmospheric supply of mineral dust iron (Fe) plays a crucial role in the Earth's biogeochemical cycle and is of specific importance as a micronutrient in the marine environment. Observations show several orders of magnitude variability in the fractional solubility of Fe in mineral dust aerosols, making it hard to assess the role of mineral dust in the global ocean biogeochemical Fe cycle. In this study we compare the operational solubility of mineral dust aerosol Fe associated with the flow-through leaching protocol to the results of the global 3-D chemical transport model GEOS-Chem. According to the protocol, aerosol Fe is defined as soluble by first deionized water leaching of mineral dust through a 0.45 mu m pore size membrane followed by acidification and storage of the leachate over a long period of time prior to analysis. To estimate the uncertainty in soluble Fe results introduced by the flow-through leaching protocol, we prescribe an average 50% (range of 30-70%) fractional solubility to sub-0.45 mu m sized mineral dust particles that may inadvertently pass the filter and end up in the acidified (at pH approximately 1.7) leachate for a couple of month period. In the model, the fractional solubility of Fe is either explicitly calculated using a complex mineral aerosol Fe dissolution equations, or prescribed to be 1% and 4% often used by global ocean biogeochemical Fe cycle models to reproduce the broad characteristics of the presently observed ocean dissolved iron distribution. Calculations show that the fractional solubility of Fe derived through the flow-through leaching is higher compared to the model results. The largest differences ( approximately 40%) are predicted to occur farther away from the dust source regions, over the areas where sub-0.45 mu m sized mineral dust particles contribute a larger fraction of the total mineral dust mass. This study suggests that different methods used in soluble Fe measurements and inconsistences in the operational definition of filterable Fe in marine environment and soluble Fe in atmospheric aerosols are likely to contribute to the wide range of fractional solubility of aerosol Fe reported in the literature. JF - Aeolian Research AU - Meskhidze, Nicholas AU - Johnson, Matthew S AU - Hurley, David AU - Dawson, Kyle Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 85 EP - 92 PB - Elsevier, Amsterdam VL - 22 SN - 1875-9637, 1875-9637 KW - sediment supply KW - iron KW - size distribution KW - mineral composition KW - transport KW - sediments KW - chemical composition KW - world ocean KW - uncertainty KW - pH KW - granulometry KW - three-dimensional models KW - sediment transport KW - clastic sediments KW - biochemistry KW - statistical analysis KW - solubility KW - measurement KW - geochemical cycle KW - metals KW - dust KW - aerosols KW - acidification KW - wind transport KW - leaching KW - crystal chemistry KW - 06A:Sedimentary petrology KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1861083197?accountid=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=Aeolian+Research&rft.atitle=Influence+of+measurement+uncertainties+on+fractional+solubility+of+iron+in+mineral+aerosols+over+the+oceans&rft.au=Meskhidze%2C+Nicholas%3BJohnson%2C+Matthew+S%3BHurley%2C+David%3BDawson%2C+Kyle&rft.aulast=Meskhidze&rft.aufirst=Nicholas&rft.date=2016-09-01&rft.volume=22&rft.issue=&rft.spage=85&rft.isbn=&rft.btitle=&rft.title=Aeolian+Research&rft.issn=18759637&rft_id=info:doi/10.1016%2Fj.aeolia.2016.07.002 L2 - http://www.sciencedirect.com/science/journal/18759637 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 CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Number of references - 78 N1 - Document feature - illus. incl. sketch map N1 - SuppNotes - Includes appendices N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - acidification; aerosols; biochemistry; chemical composition; clastic sediments; crystal chemistry; dust; geochemical cycle; granulometry; iron; leaching; measurement; metals; mineral composition; pH; sediment supply; sediment transport; sediments; size distribution; solubility; statistical analysis; three-dimensional models; transport; uncertainty; wind transport; world ocean DO - http://dx.doi.org/10.1016/j.aeolia.2016.07.002 ER - TY - JOUR T1 - Magnetite plaquettes are naturally asymmetric materials in meteorites AN - 1840621593; 2016-096419 AB - Life on Earth shows preference toward the set of organics with particular spatial configurations. Enantiomeric excesses have been observed for alpha -methyl amino acids in meteorites, which suggests that chiral asymmetry might have an abiotic origin. A possible abiotic mechanism that could produce chiral asymmetry in meteoritic amino acids is their formation under the influence of asymmetric catalysts, as mineral crystallization can produce spatially asymmetric structures. Although magnetite plaquettes have been proposed to be a possible candidate for an asymmetric catalyst, based on the suggestion that they have a spiral structure, a comprehensive description of their morphology and interpretation of the mechanism associated with symmetry-breaking in biomolecules remain elusive. Here we report observations of magnetite plaquettes in carbonaceous chondrites (CC) that were made with scanning electron microscopy and synchrotron X-ray computed microtomography (SXRCT). We obtained the crystal orientation of the plaquettes using electron backscatter diffraction (EBSD) analysis. SXRCT permits visualization of the internal features of the plaquettes. It provides an unambiguous conclusion that the plaquettes are devoid of a spiral feature and, rather that they are stacks of individual magnetite disks that do not join to form a continuous spiral. Despite the lack of spiral features, our EBSD data show significant changes in crystal orientation between adjacent magnetite disks. The magnetite disks are displaced in a consistent relative direction that lead to an overall crystallographic rotational mechanism. This work offers an explicit understanding of the structures of magnetite plaquettes in CC, which provides a fundamental basis for future interpretation of the proposed symmetry-breaking mechanism. JF - American Mineralogist AU - Chan, Queenie H S AU - Zolensky, Michael E AU - Martinez, James E AU - Tsuchiyama, Akira AU - Miyake, Akira Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 2041 EP - 2050 PB - Mineralogical Society of America, Washington, DC VL - 101 IS - 9 SN - 0003-004X, 0003-004X KW - stony meteorites KW - electron diffraction data KW - magnetic domains KW - electron microscopy data KW - crystal structure KW - carbonaceous chondrites KW - life origin KW - synchrotron radiation KW - aqueous alteration KW - meteorites KW - X-rays KW - organic compounds KW - organic acids KW - amino acids KW - oxides KW - symmetry KW - computed tomography data KW - chondrites KW - SEM data KW - magnetite KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840621593?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/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=Magnetite+plaquettes+are+naturally+asymmetric+materials+in+meteorites&rft.au=Chan%2C+Queenie+H+S%3BZolensky%2C+Michael+E%3BMartinez%2C+James+E%3BTsuchiyama%2C+Akira%3BMiyake%2C+Akira&rft.aulast=Chan&rft.aufirst=Queenie+H&rft.date=2016-09-01&rft.volume=101&rft.issue=9&rft.spage=2041&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam-2016-5604 L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2016-01-01 N1 - Number of references - 58 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2016-11-17 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - amino acids; aqueous alteration; carbonaceous chondrites; chondrites; computed tomography data; crystal structure; electron diffraction data; electron microscopy data; life origin; magnetic domains; magnetite; meteorites; organic acids; organic compounds; oxides; SEM data; stony meteorites; symmetry; synchrotron radiation; X-rays DO - http://dx.doi.org/10.2138/am-2016-5604 ER - TY - JOUR T1 - Study on nanophase iron oxyhydroxides in freshwater ferromanganese nodules from Green Bay, Lake Michigan, with implications for the adsorption of As and heavy metals AN - 1840621324; 2016-096414 AB - Nanophase Fe-oxyhydroxides in freshwater ferromanganese nodules (FFN) from Green Bay, Lake Michigan, and adsorbed arsenate have been investigated by X-ray powder diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), Z-contrast imaging, and ab initio calculations using the density functional theory (DFT). The samples from northern Green Bay can be divided into two types: Fe-Mn nodules and Fe-rich nodules. The manganese-bearing phases are todorokite, birnessite, and buserite. The iron-bearing phases are feroxyhyte, nanophase goethite, two-line ferrihydrite, and nanophase FeOOH with guyanaite structure. Z-contrast images of the Fe-oxyhydroxides show ordered FeOOH nano-domains with guyanaite structure intergrown with nanophase goethite. The FeOOH nanophase is a precursor to the goethite. Henceforth, we will refer to it as "proto-goethite." DFT calculations indicate that goethite is more stable than proto-goethite. Our results suggest that ordering between Fe and vacancies in octahedral sites result in the transformation from feroxyhyte to goethite through a proto-goethite intermediate phase. Combining Z-contrast images and TEM-EDS reveals that arsenate (AsO (sub 4) (super 3-) ) tetrahedra are preferentially adsorbed on the proto-goethite (001) surface via tridentate adsorption. Our study directly shows the atomic positions of Fe-oxyhydroxides with associated trace elements. The methods can be applied for identifying structures of nanophases and adsorbed trace elements and heavy metals. JF - American Mineralogist AU - Lee, Seungyeol AU - Shen, Zhizhang AU - Xu, Huifang Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 1986 EP - 1995 PB - Mineralogical Society of America, Washington, DC VL - 101 IS - 9 SN - 0003-004X, 0003-004X KW - secondary structures KW - goethite KW - X-ray diffraction data KW - nodules KW - feroxyhyte KW - ferromanganese composition KW - Lake Michigan KW - arsenates KW - sediments KW - oxides KW - Great Lakes KW - sedimentary structures KW - heavy metals KW - North America KW - density functional theory KW - oxyhydroxides KW - Green Bay KW - arsenic KW - electron microscopy data KW - adsorption KW - ferrihydrite KW - TEM data KW - iron hydroxides KW - hydroxides KW - concretions KW - metals KW - lacustrine environment KW - nanoparticles KW - lake sediments KW - 01C:Mineralogy of non-silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840621324?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/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=Study+on+nanophase+iron+oxyhydroxides+in+freshwater+ferromanganese+nodules+from+Green+Bay%2C+Lake+Michigan%2C+with+implications+for+the+adsorption+of+As+and+heavy+metals&rft.au=Lee%2C+Seungyeol%3BShen%2C+Zhizhang%3BXu%2C+Huifang&rft.aulast=Lee&rft.aufirst=Seungyeol&rft.date=2016-09-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2016-01-01 N1 - Number of references - 53 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables, sketch map N1 - Last updated - 2016-11-17 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - adsorption; arsenates; arsenic; concretions; density functional theory; electron microscopy data; feroxyhyte; ferrihydrite; ferromanganese composition; goethite; Great Lakes; Green Bay; heavy metals; hydroxides; iron hydroxides; lacustrine environment; Lake Michigan; lake sediments; metals; nanoparticles; nodules; North America; oxides; oxyhydroxides; secondary structures; sedimentary structures; sediments; TEM data; X-ray diffraction data DO - http://dx.doi.org/10.2138/am-2016-5729 ER - TY - JOUR T1 - A review of the handheld X-ray fluorescence spectrometer as a tool for field geologic investigations on Earth and in planetary surface exploration AN - 1840620415; 2016-094306 AB - X-ray fluorescence (XRF) spectroscopy is a well-established and commonly used technique in obtaining diagnostic compositional data on geological samples. Recently, developments in X-ray tube and detector technologies have resulted in miniaturized, field-portable instruments that enable new applications both in and out of standard laboratory settings. These applications, however, have not been extensively applied to geologic field campaigns. This study investigates the feasibility of using developing handheld XRF (hXRF) technology to enhance terrestrial field geology, with potential applications in planetary surface exploration missions. We demonstrate that the hXRF is quite stable, providing reliable and accurate data continuously over a several year period. Additionally, sample preparation is proved to have a marked effect on the strategy for collecting and assimilating hXRF data. While the hXRF is capable of obtaining data that are comparable to laboratory XRF analysis for several geologically-important elements (such as Si, Ca, Ti, and K), the instrument is unable to detect other elements (such as Mg and Na) reliably. While this limits the use of the hXRF, especially when compared to laboratory XRF techniques, the hXRF is still capable of providing the field user with significantly improved contextual awareness of a field site, and more work is needed to fully evaluate the potential of this instrument in more complex geologic environments. JF - Applied Geochemistry AU - Young, Kelsey E AU - Evans, Cynthia A AU - Hodges, Kip V AU - Bleacher, Jacob E AU - Graff, Trevor G Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 77 EP - 87 PB - Elsevier, Oxford-New York-Beijing VL - 72 SN - 0883-2927, 0883-2927 KW - methods KW - chemical analysis KW - minor elements KW - X-ray fluorescence KW - statistical analysis KW - measurement KW - major elements KW - metals KW - X-ray analysis KW - trace elements KW - chemical composition KW - rocks KW - instruments KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840620415?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Applied+Geochemistry&rft.atitle=A+review+of+the+handheld+X-ray+fluorescence+spectrometer+as+a+tool+for+field+geologic+investigations+on+Earth+and+in+planetary+surface+exploration&rft.au=Young%2C+Kelsey+E%3BEvans%2C+Cynthia+A%3BHodges%2C+Kip+V%3BBleacher%2C+Jacob+E%3BGraff%2C+Trevor+G&rft.aulast=Young&rft.aufirst=Kelsey&rft.date=2016-09-01&rft.volume=72&rft.issue=&rft.spage=77&rft.isbn=&rft.btitle=&rft.title=Applied+Geochemistry&rft.issn=08832927&rft_id=info:doi/10.1016%2Fj.apgeochem.2016.07.003 L2 - http://www.sciencedirect.com/science/journal/08832927 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 44 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2016-11-17 N1 - SubjectsTermNotLitGenreText - chemical analysis; chemical composition; instruments; major elements; measurement; metals; methods; minor elements; rocks; statistical analysis; trace elements; X-ray analysis; X-ray fluorescence DO - http://dx.doi.org/10.1016/j.apgeochem.2016.07.003 ER - TY - JOUR T1 - Redox variations in the inner solar system with new constraints from vanadium XANES in spinels AN - 1840619180; 2016-096410 AB - Many igneous rocks contain mineral assemblages that are not appropriate for application of common mineral equilibria or oxybarometers to estimate oxygen fugacity. Spinel-structured oxides, common minerals in many igneous rocks, typically contain sufficient V for XANES measurements, allowing use of the correlation between oxygen fugacity and V K pre-edge peak intensity. Here we report V pre-edge peak intensities for a wide range of spinels from source rocks ranging from terrestrial basalt to achondrites to oxidized chondrites. The XANES measurements are used to calculate oxygen fugacity from experimentally produced spinels of known f (sub O2) . We obtain values, in order of increasing f (sub O2) , from IW-3 for lodranites and acapulcoites, to diogenites, brachinites (near IW), ALH 84001, terrestrial basalt, hornblende-bearing R chondrite LAP 04840 (IW+1.6), and finally ranging up to IW+3.1 for CK chondrites (where the Delta IW notation = logf (sub O2) of a sample relative to the logf (sub O2) of the IW buffer at specific T). To place the significance of these new measurements into context we then review the range of oxygen fugacities recorded in major achondrite groups, chondritic and primitive materials, and planetary materials. This range extends from IW-8 to IW+2. Several chondrite groups associated with aqueous alteration exhibit values that are slightly higher than this range, suggesting that water and oxidation may be linked. The range in planetary materials is even wider than that defined by meteorite groups. Earth and Mars exhibit values higher than IW+2, due to a critical role played by pressure. Pressure allows dissolution of volatiles into magmas, which can later cause oxidation or reduction during fractionation, cooling, and degassing. Fluid mobility, either in the sub-arc mantle and crust, or in regions of metasomatism, can generate values >IW+2, again suggesting an important link between water and oxidation. At the very least, Earth exhibits a higher range of oxidation than other planets and astromaterials due to the presence of an O-rich atmosphere, liquid water, and hydrated interior. New analytical techniques and sample suites will revolutionize our understanding of oxygen fugacity variation in the inner solar system, and the origin of our solar system in general. JF - American Mineralogist AU - Righter, Kevin AU - Sutton, Steve R AU - Danielson, Lisa AU - Pando, Kellye AU - Newville, Matt Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 1928 EP - 1942 PB - Mineralogical Society of America, Washington, DC VL - 101 IS - 9 SN - 0003-004X, 0003-004X KW - volcanic rocks KW - stony meteorites KW - oxygen KW - igneous rocks KW - fugacity KW - XANES spectra KW - meteorites KW - vanadium KW - basalts KW - oxides KW - spectra KW - Eh KW - solar system KW - diogenite KW - chromite KW - achondrites KW - X-ray spectra KW - solar nebula KW - cosmic dust KW - Allan Hills Meteorites KW - comets KW - Antarctica KW - metals KW - brachinite KW - acapulcoite KW - spinel group KW - crystal chemistry KW - 04:Extraterrestrial geology KW - 01C:Mineralogy of non-silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840619180?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/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+variations+in+the+inner+solar+system+with+new+constraints+from+vanadium+XANES+in+spinels&rft.au=Righter%2C+Kevin%3BSutton%2C+Steve+R%3BDanielson%2C+Lisa%3BPando%2C+Kellye%3BNewville%2C+Matt&rft.aulast=Righter&rft.aufirst=Kevin&rft.date=2016-09-01&rft.volume=101&rft.issue=9&rft.spage=1928&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam-2016-5638 L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2016-01-01 N1 - Number of references - 140 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2016-11-17 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - acapulcoite; achondrites; Allan Hills Meteorites; Antarctica; basalts; brachinite; chromite; comets; cosmic dust; crystal chemistry; diogenite; Eh; fugacity; igneous rocks; metals; meteorites; oxides; oxygen; solar nebula; solar system; spectra; spinel group; stony meteorites; vanadium; volcanic rocks; X-ray spectra; XANES spectra DO - http://dx.doi.org/10.2138/am-2016-5638 ER - TY - JOUR T1 - Subsurface morphology and scaling of lunar impact basins AN - 1840618354; 2016-098950 AB - Impact bombardment during the first billion years after the formation of the Moon produced at least several tens of basins. The Gravity Recovery and Interior Laboratory (GRAIL) mission mapped the gravity field of these impact structures at significantly higher spatial resolution than previous missions, allowing for detailed subsurface and morphological analyses to be made across the entire globe. GRAIL-derived crustal thickness maps were used to define the regions of crustal thinning observed in centers of lunar impact basins, which represents a less unambiguous measure of a basin size than those based on topographic features. The formation of lunar impact basins was modeled numerically by using the iSALE-2D hydrocode, with a large range of impact and target conditions typical for the first billion years of lunar evolution. In the investigated range of impactor and target conditions, the target temperature had the dominant effect on the basin subsurface morphology. Model results were also used to update current impact scaling relationships applicable to the lunar setting (based on assumed target temperature). Our new temperature-dependent impact-scaling relationships provide estimates of impact conditions and transient crater diameters for the majority of impact basins mapped by GRAIL. As the formation of lunar impact basins is associated with the first approximately 700 Myr of the solar system evolution when the impact flux was considerably larger than the present day, our revised impact scaling relationships can aid further analyses and understanding of the extent of impact bombardment on the Moon and terrestrial planets in the early solar system. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Miljkovic, Katarina AU - Collins, G S AU - Wieczorek, M A AU - Johnson, B C AU - Soderblom, J M AU - Neumann, Gregory A AU - Zuber, Maria T Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 1695 EP - 1712 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 121 IS - 9 SN - 2169-9097, 2169-9097 KW - solar system KW - gravity field KW - impact features KW - Moon KW - crustal thinning KW - mapping KW - impact craters KW - GRAIL KW - lunar craters KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840618354?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info: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+the+assumed+size+distribution+of+dust+minerals+affects+the+predicted+ice+forming+nuclei&rft.au=Perlwitz%2C+Jan+P%3BFridlind%2C+A+M%3BGarcia-Pando%2C+C+Perez%3BMiller%2C+R+L%3BKnopf%2C+D+A%3BAnonymous&rft.aulast=Perlwitz&rft.aufirst=Jan&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9100 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 65 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2016-11-17 N1 - SubjectsTermNotLitGenreText - crustal thinning; GRAIL; gravity field; impact craters; impact features; lunar craters; mapping; Moon; solar system DO - http://dx.doi.org/10.1002/2016JE005038 ER - TY - JOUR T1 - Analysis of MESSENGER high-resolution images of Mercury's hollows and implications for hollow formation AN - 1840617351; 2016-098954 AB - High-resolution images from MESSENGER provide morphological information on the nature and origin of Mercury's hollows, small depressions that likely formed when a volatile constituent was lost from the surface. Because graphite may be a component of the low-reflectance material that hosts hollows, we suggest that loss of carbon by ion sputtering or conversion to methane by proton irradiation could contribute to hollows formation. Measurements of widespread hollows in 565 images with pixel scales <20 m indicate that the average depth of hollows is 24 + or - 16 m. We propose that hollows cease to increase in depth when a volatile-depleted lag deposit becomes sufficiently thick to protect the underlying surface. The difficulty of developing a lag on steep topography may account for the common occurrence of hollows on crater central peaks and walls. Disruption of the lag, e.g., by secondary cratering, could restart growth of hollows in a location that had been dormant. Images at extremely high resolution ( approximately 3 m/pixel) show that the edges of hollows are straight, as expected if the margins formed by scarp retreat. These highest-resolution images reveal no superposed impact craters, implying that hollows are very young. The width of hollows within rayed crater Balanchine suggests that the maximum time for lateral growth by 1 cm is approximately 10,000 yr. A process other than entrainment of dust by gases evolved in a steady-state sublimation-like process is likely required to explain the high-reflectance haloes that surround many hollows. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Blewett, David T AU - Stadermann, Amanda C AU - Susorney, Hannah C AU - Ernst, Carolyn M AU - Xiao, Zhiyong AU - Chabot, Nancy L AU - Denevi, Brett W AU - Murchie, Scott L AU - McCubbin, Francis M AU - Kinczyk, Mallory J AU - Gillis-Davis, Jeffrey J AU - Solomon, Sean C Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 1798 EP - 1813 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 121 IS - 9 SN - 2169-9097, 2169-9097 KW - terrestrial planets KW - planets KW - high-resolution methods KW - craters KW - Mercury Planet KW - surface features KW - MESSENGER Mission KW - reflectance KW - image analysis KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840617351?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Analysis+of+MESSENGER+high-resolution+images+of+Mercury%27s+hollows+and+implications+for+hollow+formation&rft.au=Blewett%2C+David+T%3BStadermann%2C+Amanda+C%3BSusorney%2C+Hannah+C%3BErnst%2C+Carolyn+M%3BXiao%2C+Zhiyong%3BChabot%2C+Nancy+L%3BDenevi%2C+Brett+W%3BMurchie%2C+Scott+L%3BMcCubbin%2C+Francis+M%3BKinczyk%2C+Mallory+J%3BGillis-Davis%2C+Jeffrey+J%3BSolomon%2C+Sean+C&rft.aulast=Blewett&rft.aufirst=David&rft.date=2016-09-01&rft.volume=121&rft.issue=9&rft.spage=1798&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2F2016JE005070 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9100 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 66 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2016-11-17 N1 - SubjectsTermNotLitGenreText - craters; high-resolution methods; image analysis; Mercury Planet; MESSENGER Mission; planets; reflectance; remote sensing; surface features; terrestrial planets DO - http://dx.doi.org/10.1002/2016JE005070 ER - TY - JOUR T1 - Preservation of ancient impact ages on the R chondrite parent body; (super 40) Ar/ (super 39) Ar age of hornblende-bearing R chondrite LAP 04840 AN - 1840615758; 2016-094206 AB - The hornblende- and biotite-bearing R chondrite LAP 04840 is a rare kind of meteorite possibly containing outer solar system water stored during metamorphism or postshock annealing deep within an asteroid. Because little is known regarding its age and origin, we determined (super 40) Ar/ (super 39) Ar ages on hornblende-rich separates of the meteorite, and obtained plateau ages of 4340(+ or -40) to 4380(+ or -30) Ma. These well-defined plateau ages, coupled with evidence for postshock annealing, indicate this meteorite records an ancient shock event and subsequent annealing. The age of 4340-4380 Ma (or 4.34-4.38 Ga) for this and other previously dated R chondrites is much older than most impact events recorded by ordinary chondrites and points to an ancient event or events that predated the late heavy bombardment that is recorded in so many meteorites and lunar samples. Abstract Copyright Published 2016. This article is a U.S. Government work and is in the public domain in the USA. JF - Meteoritics & Planetary Science AU - Righter, Kevin AU - Cosca, Michael A AU - Morgan, L E Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 1678 EP - 1684 PB - Meteoritical Society, Fayetteville, AR VL - 51 IS - 9 SN - 1086-9379, 1086-9379 KW - silicates KW - Ar/Ar KW - stony meteorites KW - parent bodies KW - amphibole group KW - LaPaz Icefield Meteorites KW - LAP 04840 KW - impacts KW - thermal history KW - metamorphism KW - early solar system KW - clinoamphibole KW - meteorites KW - Antarctica KW - dates KW - rumurutiites KW - absolute age KW - hornblende KW - chondrites KW - shock metamorphism KW - preservation KW - chain silicates KW - annealing KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840615758?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Preservation+of+ancient+impact+ages+on+the+R+chondrite+parent+body%3B+%28super+40%29+Ar%2F+%28super+39%29+Ar+age+of+hornblende-bearing+R+chondrite+LAP+04840&rft.au=Righter%2C+Kevin%3BCosca%2C+Michael+A%3BMorgan%2C+L+E&rft.aulast=Righter&rft.aufirst=Kevin&rft.date=2016-09-01&rft.volume=51&rft.issue=9&rft.spage=1678&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12692 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 47 N1 - PubXState - AR N1 - Document feature - illus. N1 - Last updated - 2016-11-17 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - absolute age; amphibole group; annealing; Antarctica; Ar/Ar; chain silicates; chondrites; clinoamphibole; dates; early solar system; hornblende; impacts; LAP 04840; LaPaz Icefield Meteorites; metamorphism; meteorites; parent bodies; preservation; rumurutiites; shock metamorphism; silicates; stony meteorites; thermal history DO - http://dx.doi.org/10.1111/maps.12692 ER - TY - JOUR T1 - A cold-wet middle-latitude environment on Mars during the Hesperian-Amazonian transition; evidence from northern Arabia valleys and paleolakes AN - 1840614890; 2016-098949 AB - The growing inventory of post-Noachian fluvial valleys may represent a late, widespread episode of aqueous activity on Mars, contrary to the paradigm that fluvial activity largely ceased around the Noachian-Hesperian boundary. Fresh shallow valleys (FSVs) are widespread from approximately 30 to 45 degrees in both hemispheres with a high concentration in northern Arabia Terra. Valleys in northern Arabia Terra characteristically start abruptly on steeper slopes and terminate in topographic depressions at elevations corresponding to model-predicted lake levels. Longer valley systems flowed into and out of chains of paleolakes. Minimum discharges based on the dimensions of the incised channel assuming medium to coarse sand-size grains ranges from tens to hundreds of m (super 3) s (super -1) , respectively, consistent with formation via snowmelt from surface or sub-ice flows. Hydrologic calculations indicate the valleys likely formed in hundreds of years or less, and crater statistics constrain the timing of fluvial activity to between the Hesperian and middle Amazonian. Several craters with channels extending radially outward supports evidence for overflow of interior crater lakes possibly fed by groundwater. Most FSVs occur away from young impact craters which make an association with impact processes improbable. The widespread occurrence of FSVs along with their similar morphology and shared modest state of degradation is consistent with most forming during a global interval of favorable climate, perhaps contemporaneous with alluvial fan formation in equatorial and midlatitudes. Evidence for a snowmelt-based hydrology and considerable depths of water on the landscape in Arabia supports a cold, wet, and possibly habitable environment late in Martian history. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Wilson, Sharon A AU - Howard, Alan D AU - Moore, Jeffrey M AU - Grant, John A Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 1667 EP - 1694 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 121 IS - 9 SN - 2169-9097, 2169-9097 KW - hydrology KW - Noachian KW - valleys KW - snowmelt KW - Mars KW - paleolakes KW - Hesperian KW - Arabia Terra KW - terrestrial planets KW - planets KW - Amazonian KW - surface features KW - fluvial features KW - climate KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840614890?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=A+cold-wet+middle-latitude+environment+on+Mars+during+the+Hesperian-Amazonian+transition%3B+evidence+from+northern+Arabia+valleys+and+paleolakes&rft.au=Wilson%2C+Sharon+A%3BHoward%2C+Alan+D%3BMoore%2C+Jeffrey+M%3BGrant%2C+John+A&rft.aulast=Wilson&rft.aufirst=Sharon&rft.date=2016-09-01&rft.volume=121&rft.issue=9&rft.spage=1667&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2F2016JE005052 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9100 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 88 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2016-11-17 N1 - SubjectsTermNotLitGenreText - Amazonian; Arabia Terra; climate; fluvial features; Hesperian; hydrology; Mars; Noachian; paleolakes; planets; snowmelt; surface features; terrestrial planets; valleys DO - http://dx.doi.org/10.1002/2016JE005052 ER - TY - JOUR T1 - Role of atmospheric chemistry in the climate impacts of stratospheric volcanic injections AN - 1828846231; 2016-087314 JF - Nature Geoscience AU - LeGrande, Allegra N AU - Tsigaridis, Kostas AU - Bauer, Susanne E Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 652 EP - 655 PB - Nature Publishing Group, London VL - 9 IS - 9 SN - 1752-0894, 1752-0894 KW - sulfur dioxide KW - sulfates KW - CMIP5 model KW - atmosphere KW - water vapor KW - climate change KW - gases KW - models KW - stratosphere KW - volcanism KW - eruptions KW - volcanoes KW - aerosols KW - climate forcing KW - geochemistry KW - climate KW - 24:Quaternary geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1828846231?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Role+of+atmospheric+chemistry+in+the+climate+impacts+of+stratospheric+volcanic+injections&rft.au=LeGrande%2C+Allegra+N%3BTsigaridis%2C+Kostas%3BBauer%2C+Susanne+E&rft.aulast=LeGrande&rft.aufirst=Allegra&rft.date=2016-09-01&rft.volume=9&rft.issue=9&rft.spage=652&rft.isbn=&rft.btitle=&rft.title=Nature+Geoscience&rft.issn=17520894&rft_id=info:doi/10.1038%2FNGEO2771 L2 - http://www.nature.com/ngeo/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 50 N1 - Document feature - illus. N1 - Last updated - 2016-10-25 N1 - SubjectsTermNotLitGenreText - aerosols; atmosphere; climate; climate change; climate forcing; CMIP5 model; eruptions; gases; geochemistry; models; stratosphere; sulfates; sulfur dioxide; volcanism; volcanoes; water vapor DO - http://dx.doi.org/10.1038/NGEO2771 ER - TY - JOUR T1 - Drones that see through waves - preliminary results from airborne fluid lensing for centimetre-scale aquatic conservation AN - 1827896436; PQ0003650490 AB - 1. The use of fluid lensing technology on unmanned aerial vehicles (UAVs, or drones) is presented as a novel means for 3D imaging of aquatic ecosystems from above the water's surface at the centimetre scale. Preliminary results are presented from airborne fluid lensing campaigns conducted over the coral reefs of Ofu Island, American Samoa (2013) and the stromatolite reefs of Shark Bay, Western Australia (2014), covering a combined area of 15 km super(2). These reef ecosystems were revealed with centimetre-scale 2D resolution, and an accompanying 3D bathymetry model was derived using fluid lensing, Structure from Motion and UAV position data. Data products were validated from in situ survey methods including underwater calibration targets, depth measurements and millimetre-scale high-dynamic-range gigapixel photogrammetry. 2. Fluid lensing is an experimental technology that uses water-transmitting wavelengths to passively image underwater objects at high-resolution by exploiting time-varying optical lensing events caused by surface waves. Fluid lensing data are captured from low-altitude, cost-effective electric UAVs to achieve multispectral imagery and bathymetry models at the centimetre scale over regional areas. As a passive system, fluid lensing is presently limited by signal-to-noise ratio and water column inherent optical properties to ~10 m depth over visible wavelengths in clear waters. 3. The datasets derived from fluid lensing present the first centimetre-scale images of a reef acquired from above the ocean surface, without wave distortion. The 3D multispectral data distinguish coral, fish and invertebrates in American Samoa, and reveal previously undocumented, morphologically distinct, stromatolite structures in Shark Bay. These findings suggest fluid lensing and multirotor electric drones represent a promising advance in the remote sensing of aquatic environments at the centimetre scale, or 'reef scale' relevant to the conservation of reef ecosystems. Pending further development and validation of fluid lensing methods, these technologies present a solution for large-scale 3D surveys of shallow aquatic habitats with centimetre-scale spatial resolution and hourly temporal sampling. JF - Aquatic Conservation: Marine and Freshwater Ecosystems AU - Chirayath, Ved AU - Earle, Sylvia A AD - Laboratory for Advanced Sensing, Earth Science Division, NASA Ames Research Center, CA, USA. Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 237 EP - 250 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 26 SN - 1052-7613, 1052-7613 KW - Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts; ASFA Marine Biotechnology Abstracts KW - ISE, Pacific, American Samoa KW - Reefs KW - Ecosystems KW - ISW, Australia, Western Australia KW - Optical properties KW - Depth measurement KW - Remote sensing KW - spatial discrimination KW - Freshwater KW - Stromatolites KW - Water column KW - Models KW - Marine fish KW - Islands KW - Waves KW - Sampling KW - Wavelength KW - Modelling KW - Marine KW - ISW, Australia, Western Australia, Shark Bay KW - Data processing KW - Surveys KW - Aquatic ecosystems KW - Habitat KW - imaging KW - Bathymetry KW - Aquatic environment KW - Wavelengths KW - Methodology KW - Signal-to-noise ratio KW - Underwater KW - Oceans KW - Scales KW - Coral reefs KW - Drones KW - Conservation KW - Fish KW - Technology KW - SW 0810:General KW - Q4 27790:Fish KW - Q1 08604:Stock assessment and management KW - D 04060:Management and Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1827896436?accountid=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=Aquatic+Conservation%3A+Marine+and+Freshwater+Ecosystems&rft.atitle=Drones+that+see+through+waves+-+preliminary+results+from+airborne+fluid+lensing+for+centimetre-scale+aquatic+conservation&rft.au=Chirayath%2C+Ved%3BEarle%2C+Sylvia+A&rft.aulast=Chirayath&rft.aufirst=Ved&rft.date=2016-09-01&rft.volume=26&rft.issue=&rft.spage=237&rft.isbn=&rft.btitle=&rft.title=Aquatic+Conservation%3A+Marine+and+Freshwater+Ecosystems&rft.issn=10527613&rft_id=info:doi/10.1002%2Faqc.2654 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-10-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Marine fish; Signal-to-noise ratio; Depth measurement; Coral reefs; Fish; Bathymetry; Stromatolites; Methodology; Modelling; Data processing; Optical properties; Remote sensing; spatial discrimination; Habitat; Aquatic ecosystems; imaging; Water column; Aquatic environment; Models; Islands; Scales; Oceans; Drones; Conservation; Waves; Wavelength; Sampling; Reefs; Underwater; Ecosystems; Surveys; Wavelengths; Technology; ISE, Pacific, American Samoa; ISW, Australia, Western Australia, Shark Bay; ISW, Australia, Western Australia; Marine; Freshwater DO - http://dx.doi.org/10.1002/aqc.2654 ER - TY - JOUR T1 - Quantifying the contribution of thermally driven recirculation to a high-ozone event along the Colorado Front Range using lidar AN - 1827890852; PQ0003704551 AB - A high-ozone (O sub(3)) pollution episode was observed on 22 July 2014 during the concurrent "Deriving Information on Surface Conditions from Column and Vertically Resolved Observations Relevant to Air Quality" (DISCOVER-AQ) and "Front Range Air Pollution and Photochemistry Experiment" (FRAPPE) campaigns in northern Colorado. Surface O sub(3) monitors at three regulatory sites exceeded the Environmental Protection Agency (EPA) 2008 National Ambient Air Quality Standard (NAAQS) daily maximum 8h average (MDA8) of 75ppbv. To further characterize the polluted air mass and assess transport throughout the event, measurements are presented from O sub(3) and wind profilers, O sub(3)-sondes, aircraft, and surface-monitoring sites. Observations indicate that thermally driven upslope flow was established throughout the Colorado Front Range during the pollution episode. As the thermally driven flow persisted throughout the day, O sub(3) concentrations increased and affected high-elevation Rocky Mountain sites. These observations, coupled with modeling analyses, demonstrate a westerly return flow of polluted air aloft, indicating that the mountain-plains solenoid circulation was established and impacted surface conditions within the Front Range. Key Points * Thermally driven mountain-plains circulation and polluted return flow aloft exacerbated poor air quality in Colorado's Front Range * Ozone and wind observations are utilized to provide a high-resolution characterization of the air quality episode * Simulations further suggest the downward transport of ozone to sites within the Front Range JF - Journal of Geophysical Research: Atmospheres AU - Sullivan, John T AU - McGee, Thomas J AU - Langford, Andrew O AU - Alvarez, Raul J AU - Senff, Christoph J AU - Reddy, Patrick J AU - Thompson, Anne M AU - Twigg, Laurence W AU - Sumnicht, Grant K AU - Lee, Pius AU - Weinheimer, Andrew AU - Knote, Christoph AU - Long, Russell W AU - Hoff, Raymond M AD - Atmospheric Chemistry and Dynamics Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 10 EP - 10,390 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 121 IS - 17 SN - 2169-897X, 2169-897X KW - Pollution Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Flow KW - Photochemistry KW - Pollution monitoring KW - Pollution dispersion KW - Westerlies KW - Lidar KW - Air quality KW - North America, Rocky Mts. KW - Mountains KW - Ozone in troposphere KW - Aircraft KW - Return Flow KW - Ozone profiles KW - Wind KW - Ozone KW - Air Pollution KW - Air masses KW - Wind shear KW - Atmospheric pollution KW - Simulation Analysis KW - Aircraft observations KW - Simulation KW - Air Masses KW - Lidar observation of atmospheric pollution KW - Environmental protection KW - Air quality standards KW - Air pollution KW - EPA KW - USA, Colorado KW - Numerical simulations KW - Fronts KW - Atmospheric chemistry KW - Lidar applications KW - Standards KW - LIDAR KW - Q2 09102:Institutes and organizations KW - M2 551.510.42:Air Pollution (551.510.42) KW - P 0000:AIR POLLUTION KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1827890852?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=Quantifying+the+contribution+of+thermally+driven+recirculation+to+a+high-ozone+event+along+the+Colorado+Front+Range+using+lidar&rft.au=Sullivan%2C+John+T%3BMcGee%2C+Thomas+J%3BLangford%2C+Andrew+O%3BAlvarez%2C+Raul+J%3BSenff%2C+Christoph+J%3BReddy%2C+Patrick+J%3BThompson%2C+Anne+M%3BTwigg%2C+Laurence+W%3BSumnicht%2C+Grant+K%3BLee%2C+Pius%3BWeinheimer%2C+Andrew%3BKnote%2C+Christoph%3BLong%2C+Russell+W%3BHoff%2C+Raymond+M&rft.aulast=Sullivan&rft.aufirst=John&rft.date=2016-09-01&rft.volume=121&rft.issue=17&rft.spage=10&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2016JD025229 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-10-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Photochemistry; Air pollution; Pollution monitoring; Pollution dispersion; Westerlies; LIDAR; Environmental protection; Ozone; Air masses; Wind shear; Atmospheric pollution; Aircraft observations; Air quality; Lidar observation of atmospheric pollution; Air quality standards; Ozone in troposphere; Fronts; Numerical simulations; Lidar applications; Ozone profiles; Mountains; EPA; Aircraft; Atmospheric chemistry; Simulation; Lidar; Wind; Air Pollution; Flow; Simulation Analysis; Return Flow; Standards; Air Masses; North America, Rocky Mts.; USA, Colorado DO - http://dx.doi.org/10.1002/2016JD025229 ER - TY - JOUR T1 - Transformations to granular zircon revealed; twinning, reidite, and ZrO (sub 2) in shocked zircon from Meteor Crater (Arizona, USA) AN - 1824213063; 2016-083462 AB - Granular zircon in impact environments has long been recognized but remains poorly understood due to lack of experimental data to identify mechanisms involved in its genesis. Meteor Crater in Arizona (USA) contains abundant evidence of shock metamorphism, including shocked quartz, the high-pressure polymorphs coesite and stishovite, diaplectic SiO (sub 2) glass, and lechatelierite (fused SiO (sub 2) ). Here we report the presence of granular zircon, a new shocked-mineral discovery at Meteor Crater, that preserve critical orientation evidence of specific transformations that occurred during formation at extreme impact conditions. The zircon grains occur as aggregates of sub-micrometer neoblasts in highly shocked Coconino Sandstone (CS) comprised of lechatelierite. Electron backscatter diffraction shows that each grain consists of multiple domains, some with boundaries disoriented by 65 degrees around , a known {112} shock-twin orientation. Other domains have {001} in alignment with {110} of neighboring domains, consistent with the former presence of the high-pressure ZrSiO (sub 4) polymorph reidite. Additionally, nearly all zircon preserve ZrO (sub 2) + SiO (sub 2) , providing evidence of partial dissociation. The genesis of CS granular zircon started with detrital zircon that experienced shock twinning and reidite formation at pressures from 20 to 30 GPa, ultimately yielding a phase that retained crystallographic memory; this phase subsequently recrystallized to systematically oriented zircon neoblasts, and in some areas partially dissociated to ZrO (sub 2) The lechatelierite matrix, experimentally constrained to form at >2000 degrees C, provided the ultrahigh-temperature environment for zircon dissociation ( approximately 1670 degrees C) and neoblast formation. The capacity of granular zircon to preserve a cumulative pressure-temperature record has not been recognized previously, and provides a new method for investigating histories of impact-related mineral transformations in the crust at conditions far beyond those at which most rocks melt. JF - Geology (Boulder) AU - Cavosie, Aaron J AU - Timms, Nicholas E AU - Erickson, Timmons M AU - Hagerty, Justin J AU - Hoerz, Friedrich Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 703 EP - 706 PB - Geological Society of America (GSA), Boulder, CO VL - 44 IS - 9 SN - 0091-7613, 0091-7613 KW - United States KW - silicates KW - Coconino County Arizona KW - impact features KW - silica minerals KW - sandstone KW - meteor craters KW - twinning KW - temperature KW - reidite KW - sedimentary rocks KW - granular materials KW - orthosilicates KW - framework silicates KW - Meteor Crater KW - zircon group KW - pressure KW - zircon KW - impacts KW - metamorphism KW - high pressure KW - nesosilicates KW - lechatelierite KW - Arizona KW - impact craters KW - clastic rocks KW - shock metamorphism KW - high temperature KW - 01B:Mineralogy of silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824213063?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Transformations+to+granular+zircon+revealed%3B+twinning%2C+reidite%2C+and+ZrO+%28sub+2%29+in+shocked+zircon+from+Meteor+Crater+%28Arizona%2C+USA%29&rft.au=Cavosie%2C+Aaron+J%3BTimms%2C+Nicholas+E%3BErickson%2C+Timmons+M%3BHagerty%2C+Justin+J%3BHoerz%2C+Friedrich&rft.aulast=Cavosie&rft.aufirst=Aaron&rft.date=2016-09-01&rft.volume=44&rft.issue=9&rft.spage=703&rft.isbn=&rft.btitle=&rft.title=Geology+%28Boulder%29&rft.issn=00917613&rft_id=info:doi/10.1130%2FG38043.1 L2 - http://geology.gsapubs.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, 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 - 2016-01-01 N1 - Number of references - 32 N1 - PubXState - CO N1 - Document feature - illus. incl. sketch map N1 - SuppNotes - GSA Data Repository item 2016228 N1 - Last updated - 2016-09-29 N1 - CODEN - GLGYBA N1 - SubjectsTermNotLitGenreText - Arizona; clastic rocks; Coconino County Arizona; framework silicates; granular materials; high pressure; high temperature; impact craters; impact features; impacts; lechatelierite; metamorphism; Meteor Crater; meteor craters; nesosilicates; orthosilicates; pressure; reidite; sandstone; sedimentary rocks; shock metamorphism; silica minerals; silicates; temperature; twinning; United States; zircon; zircon group DO - http://dx.doi.org/10.1130/G38043.1 ER - TY - JOUR T1 - Evidence for a dynamic nanodust cloud enveloping the Moon AN - 1819144567; PQ0003641601 AB - The exospheres that surround airless bodies such as the Moon are tenuous, atmosphere-like layers whose constituent particles rarely collide with one another. Some particles contained within such exospheres are the product of direct interactions between airless bodies and the space environment, and offer insights into space weathering processes. NASA's Lunar Atmosphere and Dust Environment Explorer (LADEE) mission studied the Moon's exospheric constituents in situ and detected a permanent dust exosphere of particles with radii as small as 300nm. Here we present evidence from LADEE spectral data for an additional fluctuating nanodust exosphere at the Moon containing a population of particles sufficiently dense to be detectable via scattered sunlight. We compare two anti-Sun spectral observations: one near the peak of the Quadrantid meteoroid stream, the other during a period of comparatively weak stream activity. The former shows a negative spectral slope consistent with backscattering of sunlight by nanodust grains with radii less than 20 to 30nm; the latter has a flatter spectral slope. We hypothesize that a spatially and temporally variable nanodust exosphere may exist at the Moon, and that it is modulated by changes in meteoroid impact rates, such as during encounters with meteoroid streams. The findings suggest that similar nanodust exospheres-and the particle ejection and transport processes that form them-may occur at other airless bodies. JF - Nature Geoscience AU - Wooden, D H AU - Cook, A M AU - Colaprete, A AU - Glenar, DA AU - Stubbs, T J AU - Shirley, M AD - NASA Ames Research Center, Moffett Field, California 94035, USA Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 665 EP - 668 PB - Nature Publishing Group, The Macmillan Building London N1 9XW United Kingdom VL - 9 IS - 9 SN - 1752-0894, 1752-0894 KW - Ecology Abstracts; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Streams KW - Atmosphere KW - Dust KW - Sunlight KW - Weathering KW - Transport processes KW - Slopes KW - Meteorite impact effects KW - Atmospheric particulates KW - Data processing KW - Moon KW - Environmental impact KW - Lunar atmosphere KW - Dusts KW - Ecosystem disturbance KW - Clouds KW - Stream KW - Grain KW - Eolian dust KW - Q2 09262:Methods and instruments KW - M2 523.3:Earth-Moon System (523.3) KW - SW 0810:General KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819144567?accountid=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=Nature+Geoscience&rft.atitle=Evidence+for+a+dynamic+nanodust+cloud+enveloping+the+Moon&rft.au=Wooden%2C+D+H%3BCook%2C+A+M%3BColaprete%2C+A%3BGlenar%2C+DA%3BStubbs%2C+T+J%3BShirley%2C+M&rft.aulast=Wooden&rft.aufirst=D&rft.date=2016-09-01&rft.volume=9&rft.issue=9&rft.spage=665&rft.isbn=&rft.btitle=&rft.title=Nature+Geoscience&rft.issn=17520894&rft_id=info:doi/10.1038%2Fngeo2779 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-09-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Atmospheric particulates; Moon; Stream; Environmental impact; Weathering; Transport processes; Ecosystem disturbance; Dust; Eolian dust; Clouds; Data processing; Grain; Sunlight; Atmosphere; Streams; Lunar atmosphere; Meteorite impact effects; Slopes; Dusts DO - http://dx.doi.org/10.1038/ngeo2779 ER - TY - JOUR T1 - Evolutionary tradeoffs in cellular composition across diverse bacteria AN - 1815706002; PQ0003588420 AB - One of the most important classic and contemporary interests in biology is the connection between cellular composition and physiological function. Decades of research have allowed us to understand the detailed relationship between various cellular components and processes for individual species, and have uncovered common functionality across diverse species. However, there still remains the need for frameworks that can mechanistically predict the tradeoffs between cellular functions and elucidate and interpret average trends across species. Here we provide a comprehensive analysis of how cellular composition changes across the diversity of bacteria as connected with physiological function and metabolism, spanning five orders of magnitude in body size. We present an analysis of the trends with cell volume that covers shifts in genomic, protein, cellular envelope, RNA and ribosomal content. We show that trends in protein content are more complex than a simple proportionality with the overall genome size, and that the number of ribosomes is simply explained by cross-species shifts in biosynthesis requirements. Furthermore, we show that the largest and smallest bacteria are limited by physical space requirements. At the lower end of size, cell volume is dominated by DNA and protein content-the requirement for which predicts a lower limit on cell size that is in good agreement with the smallest observed bacteria. At the upper end of bacterial size, we have identified a point at which the number of ribosomes required for biosynthesis exceeds available cell volume. Between these limits we are able to discuss systematic and dramatic shifts in cellular composition. Much of our analysis is connected with the basic energetics of cells where we show that the scaling of metabolic rate is surprisingly superlinear with all cellular components. JF - ISME Journal AU - Kempes, Christopher P AU - Wang, Lawrence AU - Amend, Jan P AU - Doyle, John AU - Hoehler, Tori AD - The Santa Fe Institute, Santa Fe, NM, USA; Control and Dynamical Systems, California Institute of Technology, Pasadena, CA, USA; NASA Ames Research Center, Moffett Field, CA, USA Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 2145 EP - 2157 PB - Nature Publishing Group, The Macmillan Building London N1 9XW United Kingdom VL - 10 IS - 9 SN - 1751-7362, 1751-7362 KW - Microbiology Abstracts A: Industrial & Applied Microbiology; Microbiology Abstracts B: Bacteriology; Environment Abstracts; Ecology Abstracts KW - Genomes KW - Bacteria KW - Biosynthesis KW - Physiology KW - Metabolic rate KW - Ribosomes KW - rRNA KW - Envelopes KW - RNA KW - Cell size KW - Body size KW - DNA KW - Proteins KW - genomics KW - Scaling KW - Metabolism KW - Evolution KW - J 02310:Genetics & Taxonomy KW - D 04040:Ecosystem and Ecology Studies KW - ENA 21:Wildlife KW - A 01300:Methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815706002?accountid=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=ISME+Journal&rft.atitle=Evolutionary+tradeoffs+in+cellular+composition+across+diverse+bacteria&rft.au=Kempes%2C+Christopher+P%3BWang%2C+Lawrence%3BAmend%2C+Jan+P%3BDoyle%2C+John%3BHoehler%2C+Tori&rft.aulast=Kempes&rft.aufirst=Christopher&rft.date=2016-09-01&rft.volume=10&rft.issue=9&rft.spage=2145&rft.isbn=&rft.btitle=&rft.title=ISME+Journal&rft.issn=17517362&rft_id=info:doi/10.1038%2Fismej.2016.21 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-08-01 N1 - Last updated - 2016-10-12 N1 - SubjectsTermNotLitGenreText - Genomes; rRNA; Envelopes; RNA; Cell size; DNA; Metabolic rate; Body size; Ribosomes; genomics; Scaling; Evolution; Biosynthesis; Bacteria; Physiology; Proteins; Metabolism DO - http://dx.doi.org/10.1038/ismej.2016.21 ER - TY - JOUR T1 - Synthesis of akaganeite in the presence of sulfate; implications for akaganeite formation in Yellowknife Bay, Gale Crater, Mars AN - 1815668109; 2016-076496 AB - Akaganeite, a Cl-bearing Fe(III) (hydr)oxide, has been recently discovered in Yellowknife Bay in Gale crater on Mars by the Mars Science Laboratory (MSL) Curiosity Rover. Akaganeite was associated with sulfate and sulfide minerals at Yellowknife Bay indicating that sulfate ions could be present in solution during akaganeite formation. The mechanism and conditions of akaganeite formation in the Yellowknife Bay mudstone are unknown. We investigated formation of akaganeite through hydrolysis of ferric chloride solution in the presence of 0, 0.01, 0.05, 0.1 and 0.2 M sulfate and at initial pH of 1.5, 2 and 4 at 90 degrees C. Mineralogy of the precipitated Fe(III) phases was characterized by X-ray diffraction and infrared spectroscopy. The precipitates were also acid digested to determine total sulfate and chloride contents. Akaganeite and natrojarosite formed at initial solution pH of 1.5; akaganeite, goethite and natrojarosite precipitated in initial pH 2 solutions and goethite, hematite and 2-line ferrihydrite precipitated at initial solution pH of 4. Sulfate addition did not inhibit akaganeite formation. Increasing initial solution sulfate concentrations resulted in increasing sulfate to chloride ratio in the precipitated akaganeite. Infrared spectroscopy revealed akaganeite bands at approximately 2 mu m (H (sub 2) O combination band) and at approximately 2.46 mu m (OH combination band). The H (sub 2) O combination band position linearly correlated with total chloride content in akaganeite. Overall, laboratory studies demonstrated formation of akaganeite at initial sulfate concentration < or =0.2 M (sulfate to chloride molar ratio < or =0.3) and pH < or = 2, implying that those conditions might prevail (perhaps as micro-environments) during akaganeite formation in Yellowknife Bay mudstone. The occurrence of Fe(II) sulfides (pyrite and pyrrhotite) in Yellowknife Bay mudstone is a potential acidity source. Dissolution of sulfide minerals might occur under localized oxidizing water-limiting Cl-rich conditions creating favorable environments for akaganeite formation. JF - Geochimica et Cosmochimica Acta AU - Peretyazhko, Tanya S AU - Fox, A AU - Sutter, B AU - Niles, P B AU - Adams, M AU - Morris, R V AU - Ming, D W Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 284 EP - 296 PB - Elsevier, New York, NY VL - 188 SN - 0016-7037, 0016-7037 KW - halides KW - iron oxides KW - X-ray diffraction data KW - mass spectra KW - hydrolysis KW - Mars KW - infrared spectra KW - Gale Crater KW - FTIR spectra KW - sedimentary rocks KW - mineral composition KW - akaganeite KW - chlorides KW - oxides KW - spectra KW - synthesis KW - geochemistry KW - pH KW - Yellowknife Bay KW - mudstone KW - sulfates KW - natrojarosite KW - cosmochemistry KW - terrestrial planets KW - jarosite KW - ICP mass spectra KW - planets KW - precipitation KW - sedimentary petrology KW - clastic rocks KW - 04:Extraterrestrial geology KW - 01C:Mineralogy of non-silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815668109?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Synthesis+of+akaganeite+in+the+presence+of+sulfate%3B+implications+for+akaganeite+formation+in+Yellowknife+Bay%2C+Gale+Crater%2C+Mars&rft.au=Peretyazhko%2C+Tanya+S%3BFox%2C+A%3BSutter%2C+B%3BNiles%2C+P+B%3BAdams%2C+M%3BMorris%2C+R+V%3BMing%2C+D+W&rft.aulast=Peretyazhko&rft.aufirst=Tanya&rft.date=2016-09-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 85 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-09-01 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - akaganeite; chlorides; clastic rocks; cosmochemistry; FTIR spectra; Gale Crater; geochemistry; halides; hydrolysis; ICP mass spectra; infrared spectra; iron oxides; jarosite; Mars; mass spectra; mineral composition; mudstone; natrojarosite; oxides; pH; planets; precipitation; sedimentary petrology; sedimentary rocks; spectra; sulfates; synthesis; terrestrial planets; X-ray diffraction data; Yellowknife Bay DO - http://dx.doi.org/10.1016/j.gca.2016.06.002 ER - TY - JOUR T1 - The CO chondrites; major recent Antarctic finds, their thermal and radiation history, and describing the metamorphic history of members of the class AN - 1815665247; 2016-076487 AB - Thermoluminescence (TL) properties of 29 CO chondrites from the Miller Range (MIL) and five chondrites from the Dominion Range (DOM) have been measured. MIL has a relatively strong natural TL signal (19.6 + or - 14.7 krad), while some of the DOM samples have a very weak natural TL signal (<1 krad) whereas others resemble the MIL meteorites. I argue that MIL and some of the DOM samples had a normal perihelion ( approximately 1.0 AU) and terrestrial age of approximately 450-700 ka, while some of the DOM samples have a terrestrial age of approximately 100 ka but a perihelion of approximately 0.8 AU. The DOM meteorites also show considerable heterogeneity in their induced TL properties, also suggesting that the DOM fragments represent more than one fall. The induced TL data for the MIL samples studied here are consistent with them all being from a single fragmented meteorite. Small (50 mg) chips have TL properties similar to 500 mg chips, so that the smaller chips are representative, although samples taken from original masses less than approximately 2 g have low natural TL suggesting that they were heated during atmospheric fall. The properties of CO chondrites are reviewed in terms of their petrologic types. Correlations between TL sensitivity, the most quantitative technique for evaluating metamorphic alteration in CO chondrites, and data for olivine composition and heterogeneity, matrix composition, inert gas content, metal composition (Ni, Co, and Cr in the kamacite), bulk carbon, C and O isotopes, graphite ordering, spectral reflectance at 0.8 mu m, and textural characteristics of the ameboid olivine and Ca-rich inclusions are examined. The petrographic types appear to be largely metamorphic in origin with perhaps a minor role for metasomatism. Contrary to recent proposals it is here argued that petrologic type definitions should (1) be specific enough to be meaningful, but broad enough to be simple in application and robust to new developments, (2) be descriptive and not interpretative, (3) should not oversimplify and obscure important class-to-class differences, and (4) take account of all the available information, while avoiding reliance on any one technique or single observation whose application is based on interpretation. With these considerations in mind the petrographic type definitions for CO chondrites are restated and the petrologic type of 3.2 assigned to both the MIL and DOM CO chondrites. JF - Geochimica et Cosmochimica Acta AU - Sears, Derek W G Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 106 EP - 124 PB - Elsevier, New York, NY VL - 188 SN - 0016-7037, 0016-7037 KW - Miller Range Meteorites KW - alteration KW - experimental studies KW - stony meteorites KW - textures KW - statistical analysis KW - correlation KW - thermoluminescence KW - properties KW - kamacite KW - carbonaceous chondrites KW - thermal history KW - metasomatism KW - metamorphism KW - CO chondrites KW - meteorites KW - Dominion Range Meteorites KW - mineral composition KW - sensitivity analysis KW - metals KW - mathematical methods KW - alloys KW - chondrites KW - 05B:Petrology of meteorites and tektites KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815665247?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+CO+chondrites%3B+major+recent+Antarctic+finds%2C+their+thermal+and+radiation+history%2C+and+describing+the+metamorphic+history+of+members+of+the+class&rft.au=Sears%2C+Derek+W+G&rft.aulast=Sears&rft.aufirst=Derek+W&rft.date=2016-09-01&rft.volume=188&rft.issue=&rft.spage=106&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2016.05.033 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 56 N1 - PubXState - NY N1 - Document feature - illus. incl. 7 tables N1 - Last updated - 2016-09-01 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - alloys; alteration; carbonaceous chondrites; chondrites; CO chondrites; correlation; Dominion Range Meteorites; experimental studies; kamacite; mathematical methods; metals; metamorphism; metasomatism; meteorites; Miller Range Meteorites; mineral composition; properties; sensitivity analysis; statistical analysis; stony meteorites; textures; thermal history; thermoluminescence DO - http://dx.doi.org/10.1016/j.gca.2016.05.033 ER - TY - JOUR T1 - Eridania Basin; an ancient paleolake floor as the next landing site for the Mars 2020 rover AN - 1812216559; 2016-068982 JF - Icarus AU - Pajola, Maurizio AU - Rossato, Sandro AU - Carter, John AU - Baratti, Emanuele AU - Pozzobon, Riccardo AU - Erculiani, Marco Sergio AU - Coradini, Marcello AU - McBride, Karen Y1 - 2016/09/01/ PY - 2016 DA - 2016 Sep 01 SP - 163 EP - 182 PB - Elsevier, New York, NY VL - 275 SN - 0019-1035, 0019-1035 KW - silicates KW - imagery KW - terrestrial environment KW - Spirit Rover KW - astrobiology KW - Mars KW - landing sites KW - paleoclimatology KW - Mars Exploration Rover KW - Mars 2020 Mission KW - paludal environment KW - Gusev Crater KW - Eridania Basin KW - CRISM KW - sulfates KW - OMEGA KW - paleolakes KW - weathering KW - clay minerals KW - terrestrial planets KW - planets KW - lacustrine environment KW - sheet silicates KW - Ma'adim Vallis KW - preservation KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1812216559?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Eridania+Basin%3B+an+ancient+paleolake+floor+as+the+next+landing+site+for+the+Mars+2020+rover&rft.au=Pajola%2C+Maurizio%3BRossato%2C+Sandro%3BCarter%2C+John%3BBaratti%2C+Emanuele%3BPozzobon%2C+Riccardo%3BErculiani%2C+Marco+Sergio%3BCoradini%2C+Marcello%3BMcBride%2C+Karen&rft.aulast=Pajola&rft.aufirst=Maurizio&rft.date=2016-09-01&rft.volume=275&rft.issue=&rft.spage=163&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.03.029 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 138 N1 - PubXState - NY N1 - Document feature - illus. incl. 4 tables, geol. sketch maps N1 - Last updated - 2016-08-18 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - astrobiology; clay minerals; CRISM; Eridania Basin; Gusev Crater; imagery; lacustrine environment; landing sites; Ma'adim Vallis; Mars; Mars 2020 Mission; Mars Exploration Rover; OMEGA; paleoclimatology; paleolakes; paludal environment; planets; preservation; sheet silicates; silicates; Spirit Rover; sulfates; terrestrial environment; terrestrial planets; weathering DO - http://dx.doi.org/10.1016/j.icarus.2016.03.029 ER - TY - JOUR T1 - Development of HPLC-Orbitrap method for identification of N-bearing molecules in complex organic material relevant to planetary environments AN - 1812216147; 2016-068991 JF - Icarus AU - Gautier, Thomas AU - Schmitz-Afonso, Isabelle AU - Touboul, David AU - Szopa, Cyril AU - Buch, Arnaud AU - Carrasco, Nathalie Y1 - 2016/09/01/ PY - 2016 DA - 2016 Sep 01 SP - 259 EP - 266 PB - Elsevier, New York, NY VL - 275 SN - 0019-1035, 0019-1035 KW - methods KW - tholins KW - icy satellites KW - development KW - nitrogen KW - laboratory studies KW - Cassini-Huygens Mission KW - isomers KW - Titan Satellite KW - satellites KW - liquid chromatography KW - chromatography KW - experimental studies KW - atmosphere KW - mass spectroscopy KW - Orbitrap KW - planets KW - organic compounds KW - identification KW - hydrocarbons KW - polycyclic aromatic hydrocarbons KW - aerosols KW - spectroscopy KW - aromatic hydrocarbons KW - 04:Extraterrestrial geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1812216147?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Development+of+HPLC-Orbitrap+method+for+identification+of+N-bearing+molecules+in+complex+organic+material+relevant+to+planetary+environments&rft.au=Gautier%2C+Thomas%3BSchmitz-Afonso%2C+Isabelle%3BTouboul%2C+David%3BSzopa%2C+Cyril%3BBuch%2C+Arnaud%3BCarrasco%2C+Nathalie&rft.aulast=Gautier&rft.aufirst=Thomas&rft.date=2016-09-01&rft.volume=275&rft.issue=&rft.spage=259&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.03.007 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 33 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2016-08-18 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - aerosols; aromatic hydrocarbons; atmosphere; Cassini-Huygens Mission; chromatography; development; experimental studies; hydrocarbons; icy satellites; identification; isomers; laboratory studies; liquid chromatography; mass spectroscopy; methods; nitrogen; Orbitrap; organic compounds; planets; polycyclic aromatic hydrocarbons; satellites; spectroscopy; tholins; Titan Satellite DO - http://dx.doi.org/10.1016/j.icarus.2016.03.007 ER - TY - JOUR T1 - An AERONET-based aerosol classification using the Mahalanobis distance AN - 1808667500; PQ0003407670 AB - We present an aerosol classification based on AERONET aerosol data from 1993 to 2012. We used the AERONET Level 2.0 almucantar aerosol retrieval products to define several reference aerosol clusters which are characteristic of the following general aerosol types: Urban-Industrial, Biomass Burning, Mixed Aerosol, Dust, and Maritime. The classification of a particular aerosol observation as one of these aerosol types is determined by its five-dimensional Mahalanobis distance to each reference cluster. We have calculated the fractional aerosol type distribution at 190 AERONET sites, as well as the monthly variation in aerosol type at those locations. The results are presented on a global map and individually in the supplementary material. Our aerosol typing is based on recognizing that different geographic regions exhibit characteristic aerosol types. To generate reference clusters we only keep data points that lie within a Mahalanobis distance of 2 from the centroid. Our aerosol characterization is based on the AERONET retrieved quantities, therefore it does not include low optical depth values. The analysis is based on "point sources" (the AERONET sites) rather than globally distributed values. The classifications obtained will be useful in interpreting aerosol retrievals from satellite borne instruments. JF - Atmospheric Environment AU - Hamill, Patrick AU - Giordano, Marco AU - Ward, Carolyne AU - Giles, David AU - Holben, Brent AD - San Jose State University, San Jose, California and NASA Ames Research Center, Moffett Field, CA, USA Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 213 EP - 233 PB - Elsevier B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 140 SN - 1352-2310, 1352-2310 KW - Meteorological & Geoastrophysical Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Environment Abstracts; Oceanic Abstracts; Water Resources Abstracts KW - Atmospheric aerosols KW - Aerosol typing KW - AERONET KW - Mahalanobis distance KW - Seasonal aerosol variation KW - High AOD events KW - Remote Sensing KW - Aerosol Robotic Network (AERONET) KW - Satellite Technology KW - Atmospheric particulates KW - Aerosols KW - Combustion products KW - Remote sensing KW - Biomass KW - Dusts KW - Satellites KW - Dust KW - Optical analysis KW - Incineration KW - Classification KW - Burning KW - Aerosol observations KW - Eolian dust KW - Q2 09243:Structure, mechanics and thermodynamics KW - M2 551.510.42:Air Pollution (551.510.42) KW - SW 0810:General KW - O 7060:Navigation and Communications KW - ENA 01:Air Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808667500?accountid=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=Atmospheric+Environment&rft.atitle=An+AERONET-based+aerosol+classification+using+the+Mahalanobis+distance&rft.au=Hamill%2C+Patrick%3BGiordano%2C+Marco%3BWard%2C+Carolyne%3BGiles%2C+David%3BHolben%2C+Brent&rft.aulast=Hamill&rft.aufirst=Patrick&rft.date=2016-09-01&rft.volume=140&rft.issue=&rft.spage=213&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Environment&rft.issn=13522310&rft_id=info:doi/10.1016%2Fj.atmosenv.2016.06.002 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-07-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Atmospheric particulates; Aerosols; Classification; Eolian dust; Dust; Aerosol Robotic Network (AERONET); Aerosol observations; Optical analysis; Combustion products; Remote sensing; Burning; Biomass; Satellites; Remote Sensing; Satellite Technology; Incineration; Dusts DO - http://dx.doi.org/10.1016/j.atmosenv.2016.06.002 ER - TY - JOUR T1 - Was Venus the first habitable world of our solar system? AN - 1863567190; 2017-007393 AB - Present-day Venus is an inhospitable place with surface temperatures approaching 750 K and an atmosphere 90 times as thick as Earth's. Billions of years ago the picture may have been very different. We have created a suite of 3-D climate simulations using topographic data from the Magellan mission, solar spectral irradiance estimates for 2.9 and 0.715 Gya, present-day Venus orbital parameters, an ocean volume consistent with current theory, and an atmospheric composition estimated for early Venus. Using these parameters we find that such a world could have had moderate temperatures if Venus had a prograde rotation period slower than approximately 16 Earth days, despite an incident solar flux 46-70% higher than Earth receives. At its current rotation period, Venus's climate could have remained habitable until at least 0.715 Gya. These results demonstrate the role rotation and topography play in understanding the climatic history of Venus-like exoplanets discovered in the present epoch. Abstract Copyright (2016), . The Authors. JF - Geophysical Research Letters AU - Way, Michael J AU - Del Genio, Anthony D AU - Kiang, Nancy Y AU - Sohl, Linda E AU - Grinspoon, David H AU - Aleinov, Igor AU - Kelley, Maxwell AU - Clune, Thomas Y1 - 2016/08/28/ PY - 2016 DA - 2016 Aug 28 SP - 8376 EP - 8383 PB - American Geophysical Union, Washington, DC VL - 43 IS - 16 SN - 0094-8276, 0094-8276 KW - water KW - solar system KW - general circulation models KW - three-dimensional models KW - Magellan Program KW - isotopes KW - orbits KW - isotope ratios KW - Venus KW - atmosphere KW - astrobiology KW - stable isotopes KW - temperature KW - nitrogen KW - terrestrial planets KW - planets KW - volatiles KW - topography KW - D/H KW - rotation KW - hydrogen KW - chemical composition KW - climate KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1863567190?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Was+Venus+the+first+habitable+world+of+our+solar+system%3F&rft.au=Way%2C+Michael+J%3BDel+Genio%2C+Anthony+D%3BKiang%2C+Nancy+Y%3BSohl%2C+Linda+E%3BGrinspoon%2C+David+H%3BAleinov%2C+Igor%3BKelley%2C+Maxwell%3BClune%2C+Thomas&rft.aulast=Way&rft.aufirst=Michael&rft.date=2016-08-28&rft.volume=43&rft.issue=16&rft.spage=8376&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2016GL069790 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2017-01-01 N1 - Number of references - 53 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2017-02-02 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - astrobiology; atmosphere; chemical composition; climate; D/H; general circulation models; hydrogen; isotope ratios; isotopes; Magellan Program; nitrogen; orbits; planets; rotation; solar system; stable isotopes; temperature; terrestrial planets; three-dimensional models; topography; Venus; volatiles; water DO - http://dx.doi.org/10.1002/2016GL069790 ER - TY - NEWS T1 - Power of Pink Provides NASA with Pressure Pictures AN - 1813147287 JF - UPI Space Daily AU - Jim Banke for NASA Aeronautics Research Mission Directorate Y1 - 2016/08/23/ PY - 2016 DA - 2016 Aug 23 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1813147287?accountid=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=Power+of+Pink+Provides+NASA+with+Pressure+Pictures&rft.au=Jim+Banke+for+NASA+Aeronautics+Research+Mission+Directorate&rft.aulast=Jim+Banke+for+NASA+Aeronautics+Research+Mission+Directorate&rft.aufirst=&rft.date=2016-08-23&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 - 2016-08-23 ER - TY - JOUR T1 - Constraints on formation and evolution of the lunar crust from feldspathic granulitic breccias NWA 3163 and 4881 AN - 1812219050; 2016-069284 AB - Lunar granulitic meteorites provide new constraints on the composition and evolution of the lunar crust as they are potentially derived from outside the Apollo and Luna landing sites. Northwest Africa (NWA) 3163, the focus of this study, and its paired stones NWA 4881 and NWA 4483, are shocked granulitic noritic anorthosites. They are petrographically and compositionally distinct from the Apollo granulites and noritic anorthosites. Northwest Africa 3163 is REE-depleted by an order of magnitude compared to Apollo granulites and is one of the most trace element depleted lunar samples studied to date. New in-situ mineral compositional data and Rb-Sr, Ar-Ar isotopic systematics are used to evaluate the petrogenetic history of NWA 3163 (and its paired stones) within the context of early lunar evolution and the bulk composition of the lunar highlands crust. The NWA 3163 protolith was the likely product of reworked lunar crust with a previous history of heavy REE depletion. The bulk feldspathic and pyroxene-rich fragments have (super 87) Sr/ (super 86) Sr that are indistinguishable and average 0.699282 + or - 0.000007 (2sigma ). A calculated source model Sr T (sub RD) age of 4.340 + or - 0.057 Ga is consistent with (1) the recently determined young FAS (Ferroan Anorthosite) age of 4.360 + or - 0.003 Ga for FAS 60025, (2) (super 142) Nd model ages for the closure of the Sm-Nd system for the mantle source reservoirs of the Apollo mare basalts (4.355-4.314 Ga) and (3) a prominent age peak in the Apollo lunar zircon record (c. 4.345 Ga). These ages are approximately 100 Myr younger than predicted timescales for complete LMO crystallization ( approximately 10 Myrs after Moon formation, Elkins-Tanton et al., 2011). This supports a later, major event during lunar evolution associated with crustal reworking due to magma ocean cumulate overturn, serial magmatism, or a large impact event leading to localized or global crustal melting and/or exhumation. The Ar-Ar isotopic systematics on aliquots of paired stone NWA 4881 are consistent with an impact event at > or = 3.5 Ga. This is inferred to record the event that induced granularization of NWA 3163 (and paired rocks). A later event is also recorded at approximately 2 Ga by Ar-Ar isotopes is consistent with an increase in the number of impacts on the lunar surface at this time (Fernandes et al., 2013). Northwest Africa 3163 and its paired stones therefore record a c. 2.4 Gyr record of lunar crustal production, metamorphism, brecciation, impacts and eventual ejection from the lunar surface. JF - Geochimica et Cosmochimica Acta AU - McLeod, Claire L AU - Brandon, Alan D AU - Fernandes, Vera A AU - Peslier, Anne H AU - Fritz, Joerg AU - Lapen, Thomas AU - Shafer, John T AU - Butcher, Alan R AU - Irving, Anthony J Y1 - 2016/08/15/ PY - 2016 DA - 2016 Aug 15 SP - 350 EP - 374 PB - Elsevier, New York, NY VL - 187 SN - 0016-7037, 0016-7037 KW - silicates KW - Northwest Africa Meteorites KW - granulite facies KW - isotopes KW - igneous rocks KW - mass spectra KW - Apollo Program KW - stable isotopes KW - Rb/Sr KW - meteorites KW - plutonic rocks KW - mineral composition KW - aluminosilicates KW - dates KW - absolute age KW - Archean KW - spectra KW - norite KW - P-T conditions KW - Ar/Ar KW - alkaline earth metals KW - NWA 4881 KW - breccia KW - Precambrian KW - Moon KW - textures KW - isotope ratios KW - electron microscopy data KW - cosmochemistry KW - metamorphism KW - anorthosite KW - ICP mass spectra KW - Sr-87/Sr-86 KW - metals KW - NWA 3163 KW - lunar crust KW - crystallization KW - gabbros KW - strontium KW - shock metamorphism KW - SEM data KW - crust KW - backscattering KW - maskelynite KW - facies KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1812219050?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Constraints+on+formation+and+evolution+of+the+lunar+crust+from+feldspathic+granulitic+breccias+NWA+3163+and+4881&rft.au=McLeod%2C+Claire+L%3BBrandon%2C+Alan+D%3BFernandes%2C+Vera+A%3BPeslier%2C+Anne+H%3BFritz%2C+Joerg%3BLapen%2C+Thomas%3BShafer%2C+John+T%3BButcher%2C+Alan+R%3BIrving%2C+Anthony+J&rft.aulast=McLeod&rft.aufirst=Claire&rft.date=2016-08-15&rft.volume=187&rft.issue=&rft.spage=350&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2016.04.032 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 144 N1 - PubXState - NY N1 - Document feature - illus. incl. 5 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-08-18 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - absolute age; alkaline earth metals; aluminosilicates; anorthosite; Apollo Program; Ar/Ar; Archean; backscattering; breccia; cosmochemistry; crust; crystallization; dates; electron microscopy data; facies; gabbros; granulite facies; ICP mass spectra; igneous rocks; isotope ratios; isotopes; lunar crust; maskelynite; mass spectra; metals; metamorphism; meteorites; mineral composition; Moon; norite; Northwest Africa Meteorites; NWA 3163; NWA 4881; P-T conditions; plutonic rocks; Precambrian; Rb/Sr; SEM data; shock metamorphism; silicates; spectra; Sr-87/Sr-86; stable isotopes; strontium; textures DO - http://dx.doi.org/10.1016/j.gca.2016.04.032 ER - TY - JOUR T1 - Evidence for a changing Martian climate from the mineralogy at Mawrth Vallis AN - 1812216881; 2016-069006 AB - Layered outcrops in the Mawrth Vallis region of Mars contain the greatest diversity of aqueous alteration products on the planet, and these materials are used to infer past aqueous environments. Orbital investigations indicate Al/Si-rich clay-bearing units overly an Fe/Mg-smectite-rich unit. Many different secondary minerals have been identified in the upper Al/Si-rich clay units, but the presence of poorly crystalline phases has not been previously investigated. Identification of approximately 10-30% allophane and imogolite in the clay-bearing units resolves previous mineralogical discrepancies between TES and CRISM of clay-bearing units on Mars. We demonstrate here that the poorly crystalline aluminosilicates allophane and imogolite comprise a significant portion of the uppermost stratum of the Al/Si-clay-rich units. These phases are unique to immature soils derived from volcanic ash in well-drained, mildly acidic environments on Earth, and we hypothesize that the deposits discovered here originate from supervolcanic activity in nearby Arabia Terra. The transition through time from smectite-bearing units to the uppermost allophane/imogolite unit in Mawrth Vallis signifies a change in climate from a warm and wet environment to one where water was sporadic and likely depleted rapidly. JF - Earth and Planetary Science Letters AU - Bishop, Janice L AU - Rampe, Elizabeth B Y1 - 2016/08/15/ PY - 2016 DA - 2016 Aug 15 SP - 42 EP - 48 PB - Elsevier, Amsterdam VL - 448 SN - 0012-821X, 0012-821X KW - silicates KW - thermal infrared spectra KW - Mars KW - paleoclimatology KW - climate change KW - infrared spectra KW - aluminosilicates KW - Mawrth Vallis KW - volcanism KW - acidic composition KW - imogolite KW - HiRISE KW - spectra KW - orbital observations KW - volcanic ash KW - soils KW - CRISM KW - secondary minerals KW - smectite KW - Mars Reconnaissance Orbiter KW - weathering KW - clay minerals KW - terrestrial planets KW - aqueous alteration KW - planets KW - allophane KW - Mars Global Surveyor Program KW - sheet silicates KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1812216881?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Evidence+for+a+changing+Martian+climate+from+the+mineralogy+at+Mawrth+Vallis&rft.au=Bishop%2C+Janice+L%3BRampe%2C+Elizabeth+B&rft.aulast=Bishop&rft.aufirst=Janice&rft.date=2016-08-15&rft.volume=448&rft.issue=&rft.spage=42&rft.isbn=&rft.btitle=&rft.title=Earth+and+Planetary+Science+Letters&rft.issn=0012821X&rft_id=info:doi/10.1016%2Fj.epsl.2016.04.031 L2 - http://www.sciencedirect.com/science/journal/0012821X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 49 N1 - Document feature - illus. N1 - SuppNotes - Includes appendix N1 - Last updated - 2016-08-18 N1 - CODEN - EPSLA2 N1 - SubjectsTermNotLitGenreText - acidic composition; allophane; aluminosilicates; aqueous alteration; clay minerals; climate change; CRISM; HiRISE; imogolite; infrared spectra; Mars; Mars Global Surveyor Program; Mars Reconnaissance Orbiter; Mawrth Vallis; orbital observations; paleoclimatology; planets; secondary minerals; sheet silicates; silicates; smectite; soils; spectra; terrestrial planets; thermal infrared spectra; volcanic ash; volcanism; weathering DO - http://dx.doi.org/10.1016/j.epsl.2016.04.031 ER - TY - JOUR T1 - Abiologic silicon isotope fractionation between aqueous Si and Fe(III)-Si gel in simulated Archean sea water; implications for Si isotope records in Precambrian sedimentary rocks AN - 1812216162; 2016-069271 AB - Precambrian Si-rich sedimentary rocks, including cherts and banded iron formations (BIFs), record a >7 ppm spread in (super 30) Si/ (super 28) Si ratios (delta (super 30) Si values), yet interpretation of this large variability has been hindered by the paucity of data on Si isotope exchange kinetics and equilibrium fractionation factors in systems that are pertinent to Precambrian marine conditions. Using the three-isotope method and an enriched (super 29) Si tracer, a series of experiments were conducted to constrain Si isotope exchange kinetics and fractionation factors between amorphous Fe(III)-Si gel, a likely precursor to Precambrian jaspers and BIFs, and aqueous Si in artificial Archean seawater under anoxic conditions. Experiments were conducted at room temperature, and in the presence and absence of aqueous Fe(II) (Fe(II) (sub aq) ).Results of this study demonstrate that Si solubility is significantly lower for Fe-Si gel than that of amorphous Si, indicating that seawater Si concentrations in the Precambrian may have been lower than previous estimates. The experiments reached approximately 70-90% Si isotope exchange after a period of 53-126 days, and the highest extents of exchange were obtained where Fe(II) (sub aq) was present, suggesting that Fe(II)-Fe(III) electron-transfer and atom-exchange reactions catalyze Si isotope exchange through breakage of Fe-Si bonds. All experiments except one showed little change in the instantaneous solid-aqueous Si isotope fractionation factor with time, allowing extraction of equilibrium Si isotope fractionation factors through extrapolation to 100% isotope exchange. The equilibrium (super 30) Si/ (super 28) Si fractionation between Fe(III)-Si gel and aqueous Si (Delta (super 30) Si (sub gel-aqueous) ) is -2.30 + or - 0.25 ppm (2sigma ) in the absence of Fe(II) (sub aq) . In the case where Fe(II) (sub aq) was present, which resulted in addition of approximately 10% Fe(II) in the final solid, creating a mixed Fe(II)-Fe(III) Si gel, the equilibrium fractionation between Fe(II)-Fe(III)-Si gel and aqueous Si (Delta (super 30) Si (sub gel-aqueous) ) is -3.23 + or - 0.37 ppm (2sigma ). Equilibrium Si isotope fractionation for Fe-Si gel systems is significantly larger in magnitude than estimates of a near-zero solid-aqueous fractionation factor between pure Si gel and aqueous Si, indicating a major influence of Fe atoms on Si-O bonds, and hence the isotopic properties, of Fe-Si gel. Larger Si isotope fractionation in the Fe(II)-bearing systems may be caused by incorporation of Fe(II) into the solid structure, which may further weaken Fe-Si bonds and thus change the Si isotope fractionation factor. The relatively large Si isotope fractionation for Fe-Si gel, relative to pure Si gel, provides a new explanation for the observed contrast in delta (super 30) Si values in the Precambrian BIFs and cherts, as well as an explanation for the relatively negative delta (super 30) Si values in BIFs, in contrast to previous proposals that the more negative delta (super 30) Si values in BIFs reflect hydrothermal sources of Si or sorption to Fe oxides/hydroxides. JF - Geochimica et Cosmochimica Acta AU - Zheng, Xin-Yuan AU - Beard, Brian L AU - Reddy, Thiruchelvi R AU - Roden, Eric E AU - Johnson, Clark M Y1 - 2016/08/15/ PY - 2016 DA - 2016 Aug 15 SP - 102 EP - 122 PB - Elsevier, New York, NY VL - 187 SN - 0016-7037, 0016-7037 KW - silicates KW - isotope fractionation KW - sea water KW - silica minerals KW - isotopes KW - banded iron formations KW - paleo-oceanography KW - mass spectra KW - simulation KW - silicon KW - stable isotopes KW - iron KW - marine sediments KW - sedimentary rocks KW - chemical reactions KW - phase equilibria KW - sediments KW - framework silicates KW - Archean KW - spectra KW - depositional environment KW - kinetics KW - experimental studies KW - chemically precipitated rocks KW - Precambrian KW - isotope ratios KW - basin analysis KW - ICP mass spectra KW - paleoenvironment KW - iron formations KW - metals KW - marine environment KW - mathematical methods KW - chert KW - anaerobic environment KW - jasper KW - Si-30/Si-28 KW - 12:Stratigraphy KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1812216162?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Abiologic+silicon+isotope+fractionation+between+aqueous+Si+and+Fe%28III%29-Si+gel+in+simulated+Archean+sea+water%3B+implications+for+Si+isotope+records+in+Precambrian+sedimentary+rocks&rft.au=Zheng%2C+Xin-Yuan%3BBeard%2C+Brian+L%3BReddy%2C+Thiruchelvi+R%3BRoden%2C+Eric+E%3BJohnson%2C+Clark+M&rft.aulast=Zheng&rft.aufirst=Xin-Yuan&rft.date=2016-08-15&rft.volume=187&rft.issue=&rft.spage=102&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2016.05.012 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 101 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-08-18 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - anaerobic environment; Archean; banded iron formations; basin analysis; chemical reactions; chemically precipitated rocks; chert; depositional environment; experimental studies; framework silicates; ICP mass spectra; iron; iron formations; isotope fractionation; isotope ratios; isotopes; jasper; kinetics; marine environment; marine sediments; mass spectra; mathematical methods; metals; paleo-oceanography; paleoenvironment; phase equilibria; Precambrian; sea water; sedimentary rocks; sediments; Si-30/Si-28; silica minerals; silicates; silicon; simulation; spectra; stable isotopes DO - http://dx.doi.org/10.1016/j.gca.2016.05.012 ER - TY - JOUR T1 - Final deglaciation of the Scandinavian ice sheet and implications for the Holocene global sea-level budget AN - 1812215916; 2016-069005 AB - The last deglaciation of the Scandinavian Ice Sheet (SIS) from approximately 21,000 to 13,000 yr ago is well-constrained by several hundred (super 10) Be and (super 14) C ages. The subsequent retreat history, however, is established primarily from minimum-limiting (super 14) C ages and incomplete Baltic-Sea varve records, leaving a substantial fraction of final SIS retreat history poorly constrained. Here we develop a high-resolution chronology for the final deglaciation of the SIS based on 79 (super 10) Be cosmogenic exposure dates sampled along three transects spanning southern to northern Sweden and Finland. Combining this new chronology with existing (super 10) Be ages on deglaciation since the Last Glacial Maximum shows that rates of SIS margin retreat were strongly influenced by deglacial millennial-scale climate variability and its effect on surface mass balance, with regional modulation of retreat associated with dynamical controls. Ice-volume estimates constrained by our new chronology suggest that the SIS contributed approximately 8 m sea-level equivalent to global sea-level rise between approximately 14.5 ka and 10 ka. Final deglaciation was largely complete by approximately 10.5 ka, with highest rates of sea-level rise occurring during the Bolling-Allerod, a 50% decrease during the Younger Dryas, and a rapid increase during the early Holocene. Combining our SIS volume estimates with estimated contributions from other remaining Northern Hemisphere ice sheets suggests that the Antarctic Ice Sheet (AIS) contributed 14.4+ or -5.9 m to global sea-level rise since approximately 13 ka. This new constraint supports those studies that indicate that an ice volume of 15 m or more of equivalent sea-level rise was lost from the AIS during the last deglaciation. JF - Earth and Planetary Science Letters AU - Cuzzone, Joshua K AU - Clark, Peter U AU - Carlson, Anders E AU - Ullman, David J AU - Rinterknecht, Vincent R AU - Milne, Glenn A AU - Lunkka, Juha-Pekka AU - Wohlfarth, Barbara AU - Marcott, Shaun A AU - Caffee, Marc Y1 - 2016/08/15/ PY - 2016 DA - 2016 Aug 15 SP - 34 EP - 41 PB - Elsevier, Amsterdam VL - 448 SN - 0012-821X, 0012-821X KW - last glacial maximum KW - Bolling KW - isotopes KW - Europe KW - Holocene KW - deglaciation KW - climate change KW - upper Pleistocene KW - Cenozoic KW - upper Weichselian KW - radioactive isotopes KW - chronology KW - Weichselian KW - ice KW - Younger Dryas KW - Scandinavian ice sheet KW - alkaline earth metals KW - Western Europe KW - Quaternary KW - Be-10 KW - Finland KW - ice sheets KW - sea-level changes KW - Scandinavia KW - metals KW - upper Quaternary KW - volume KW - Pleistocene KW - Northern Hemisphere KW - Allerod KW - beryllium KW - Sweden KW - 24:Quaternary geology KW - 03:Geochronology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1812215916?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Final+deglaciation+of+the+Scandinavian+ice+sheet+and+implications+for+the+Holocene+global+sea-level+budget&rft.au=Cuzzone%2C+Joshua+K%3BClark%2C+Peter+U%3BCarlson%2C+Anders+E%3BUllman%2C+David+J%3BRinterknecht%2C+Vincent+R%3BMilne%2C+Glenn+A%3BLunkka%2C+Juha-Pekka%3BWohlfarth%2C+Barbara%3BMarcott%2C+Shaun+A%3BCaffee%2C+Marc&rft.aulast=Cuzzone&rft.aufirst=Joshua&rft.date=2016-08-15&rft.volume=448&rft.issue=&rft.spage=34&rft.isbn=&rft.btitle=&rft.title=Earth+and+Planetary+Science+Letters&rft.issn=0012821X&rft_id=info:doi/10.1016%2Fj.epsl.2016.05.019 L2 - http://www.sciencedirect.com/science/journal/0012821X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 67 N1 - Document feature - illus. incl. sketch maps N1 - SuppNotes - Includes appendix N1 - Last updated - 2016-08-18 N1 - CODEN - EPSLA2 N1 - SubjectsTermNotLitGenreText - alkaline earth metals; Allerod; Be-10; beryllium; Bolling; Cenozoic; chronology; climate change; deglaciation; Europe; Finland; Holocene; ice; ice sheets; isotopes; last glacial maximum; metals; Northern Hemisphere; Pleistocene; Quaternary; radioactive isotopes; Scandinavia; Scandinavian ice sheet; sea-level changes; Sweden; upper Pleistocene; upper Quaternary; upper Weichselian; volume; Weichselian; Western Europe; Younger Dryas DO - http://dx.doi.org/10.1016/j.epsl.2016.05.019 ER - TY - NEWS T1 - NASA Maps Thawed Areas Under Greenland Ice Sheet AN - 1809929146 JF - UPI Space Daily AU - Maria-Jose Vinas for NASA Earth News Y1 - 2016/08/09/ PY - 2016 DA - 2016 Aug 09 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1809929146?accountid=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+Maps+Thawed+Areas+Under+Greenland+Ice+Sheet&rft.au=Maria-Jose+Vinas+for+NASA+Earth+News&rft.aulast=Maria-Jose+Vinas+for+NASA+Earth+News&rft.aufirst=&rft.date=2016-08-09&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 - 2016-08-09 ER - TY - JOUR T1 - Bright carbonate deposits as evidence of aqueous alteration on (1) Ceres AN - 1824212905; 2016-083443 JF - Nature (London) AU - De Sanctis, Maria Cristina AU - Raponi, A AU - Ammannito, E AU - Ciarniello, M AU - Toplis, M J AU - McSween, H Y AU - Castillo-Rogez, J C AU - Ehlmann, B L AU - Carrozzo, F G AU - Marchi, S AU - Tosi, F AU - Zambon, F AU - Capaccioni, F AU - Capria, M T AU - Fonte, S AU - Formisano, M AU - Frigeri, A AU - Giardino, M AU - Longobardo, A AU - Magni, G AU - Palomba, E AU - McFadden, L A AU - Pieters, C M AU - Jaumann, R AU - Schenk, P AU - Mugnuolo, R AU - Raymond, C A AU - Russell, C T Y1 - 2016/08/04/ PY - 2016 DA - 2016 Aug 04 SP - 54 EP - 57 PB - Macmillan Journals, London VL - 536 IS - 7614 SN - 0028-0836, 0028-0836 KW - silicates KW - albedo KW - ammonium KW - Ceres KW - asteroids KW - dwarf planets KW - brightness KW - aqueous alteration KW - mineral composition KW - craters KW - surface features KW - sheet silicates KW - Occator Crater KW - carbonates KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824212905?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Bright+carbonate+deposits+as+evidence+of+aqueous+alteration+on+%281%29+Ceres&rft.au=De+Sanctis%2C+Maria+Cristina%3BRaponi%2C+A%3BAmmannito%2C+E%3BCiarniello%2C+M%3BToplis%2C+M+J%3BMcSween%2C+H+Y%3BCastillo-Rogez%2C+J+C%3BEhlmann%2C+B+L%3BCarrozzo%2C+F+G%3BMarchi%2C+S%3BTosi%2C+F%3BZambon%2C+F%3BCapaccioni%2C+F%3BCapria%2C+M+T%3BFonte%2C+S%3BFormisano%2C+M%3BFrigeri%2C+A%3BGiardino%2C+M%3BLongobardo%2C+A%3BMagni%2C+G%3BPalomba%2C+E%3BMcFadden%2C+L+A%3BPieters%2C+C+M%3BJaumann%2C+R%3BSchenk%2C+P%3BMugnuolo%2C+R%3BRaymond%2C+C+A%3BRussell%2C+C+T&rft.aulast=De+Sanctis&rft.aufirst=Maria&rft.date=2016-08-04&rft.volume=536&rft.issue=7614&rft.spage=54&rft.isbn=&rft.btitle=&rft.title=Nature+%28London%29&rft.issn=00280836&rft_id=info:doi/10.1038%2Fnature18290 L2 - http://www.nature.com/nature/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 24 N1 - Document feature - illus. N1 - Last updated - 2016-09-29 N1 - CODEN - NATUAS N1 - SubjectsTermNotLitGenreText - albedo; ammonium; aqueous alteration; asteroids; brightness; carbonates; Ceres; craters; dwarf planets; mineral composition; Occator Crater; sheet silicates; silicates; surface features DO - http://dx.doi.org/10.1038/nature18290 ER - TY - NEWS T1 - Collecting Fingerprints in the Sky AN - 1807975665 JF - UPI Space Daily AU - Denise Lineberry for NASA Earth News Y1 - 2016/08/02/ PY - 2016 DA - 2016 Aug 02 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1807975665?accountid=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=Collecting+Fingerprints+in+the+Sky&rft.au=Denise+Lineberry+for+NASA+Earth+News&rft.aulast=Denise+Lineberry+for+NASA+Earth+News&rft.aufirst=&rft.date=2016-08-02&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 - 2016-08-02 ER - TY - JOUR T1 - Effects of model physics on hypoxia simulations for the northern Gulf of Mexico; a model intercomparison AN - 1849311491; 2016-106655 AB - A large hypoxic zone forms every summer on the Texas-Louisiana Shelf in the northern Gulf of Mexico due to nutrient and freshwater inputs from the Mississippi/Atchafalaya River System. Efforts are underway to reduce the extent of hypoxic conditions through reductions in river nutrient inputs, but the response of hypoxia to such nutrient load reductions is difficult to predict because biological responses are confounded by variability in physical processes. The objective of this study is to identify the major physical model aspects that matter for hypoxia simulation and prediction. In order to do so, we compare three different circulation models (ROMS, FVCOM, and NCOM) implemented for the northern Gulf of Mexico, all coupled to the same simple oxygen model, with observations and against each other. By using a highly simplified oxygen model, we eliminate the potentially confounding effects of a full biogeochemical model and can isolate the effects of physical features. In a systematic assessment, we found that (1) model-to-model differences in bottom water temperatures result in differences in simulated hypoxia because temperature influences the uptake rate of oxygen by the sediments (an important oxygen sink in this system), (2) vertical stratification does not explain model-to-model differences in hypoxic conditions in a straightforward way, and (3) the thickness of the bottom boundary layer, which sets the thickness of the hypoxic layer in all three models, is key to determining the likelihood of a model to generate hypoxic conditions. These results imply that hypoxic area, the commonly used metric in the northern Gulf which ignores hypoxic layer thickness, is insufficient for assessing a model's ability to accurately simulate hypoxia, and that hypoxic volume needs to be considered as well. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Oceans AU - Fennel, Katja AU - Laurent, Arnaud AU - Hetland, Robert AU - Justic, Dubravko AU - Ko, Dong S AU - Lehrter, John AU - Murrell, Michael AU - Wang, Lixia AU - Yu, Liuqian AU - Zhang, Wenxia Y1 - 2016/08// PY - 2016 DA - August 2016 SP - 5731 EP - 5750 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 121 IS - 8 SN - 2169-9275, 2169-9275 KW - United States KW - Finite Volume Coast Ocean Model KW - sea water KW - FVCOM KW - oxygen KW - data processing KW - Gulf of Mexico KW - Regional Ocean Modelling System KW - Navy Coastal Ocean Model KW - digital simulation KW - Louisiana KW - northern Gulf of Mexico KW - ROMS KW - ocean circulation KW - numerical models KW - NCOM KW - solutes KW - Texas KW - stratification KW - dissolved oxygen KW - anaerobic environment KW - continental shelf KW - North Atlantic KW - Atlantic Ocean KW - bottom water KW - 07:Oceanography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849311491?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Effects+of+model+physics+on+hypoxia+simulations+for+the+northern+Gulf+of+Mexico%3B+a+model+intercomparison&rft.au=Fennel%2C+Katja%3BLaurent%2C+Arnaud%3BHetland%2C+Robert%3BJustic%2C+Dubravko%3BKo%2C+Dong+S%3BLehrter%2C+John%3BMurrell%2C+Michael%3BWang%2C+Lixia%3BYu%2C+Liuqian%3BZhang%2C+Wenxia&rft.aulast=Fennel&rft.aufirst=Katja&rft.date=2016-08-01&rft.volume=121&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 53 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table, sketch map N1 - Last updated - 2016-12-16 N1 - SubjectsTermNotLitGenreText - anaerobic environment; Atlantic Ocean; bottom water; continental shelf; data processing; digital simulation; dissolved oxygen; Finite Volume Coast Ocean Model; FVCOM; Gulf of Mexico; Louisiana; Navy Coastal Ocean Model; NCOM; North Atlantic; northern Gulf of Mexico; numerical models; ocean circulation; oxygen; Regional Ocean Modelling System; ROMS; sea water; solutes; stratification; Texas; United States DO - http://dx.doi.org/10.1002/2015JC011577 ER - TY - JOUR T1 - A snapshot of internal waves and hydrodynamic instabilities in the southern Bay of Bengal AN - 1849309959; 2016-106664 AB - Measurements conducted in the southern Bay of Bengal (BoB) as a part of the ASIRI-EBoB Program portray the characteristics of high-frequency internal waves in the upper pycnocline as well as the velocity structure with episodic events of shear instability. A 20 h time series of CTD, ADCP, and acoustic backscatter profiles down to 150 m as well as temporal CTD measurements in the pycnocline at z = 54 m were taken to the east of Sri Lanka. Internal waves of periods approximately 10-40 min were recorded at all depths below a shallow ( approximately 20-30 m) surface mixed layer in the background of an 8 m amplitude internal tide. The absolute values of vertical displacements associated with high-frequency waves followed the Nakagami distribution with a median value of 2.1 m and a 95% quintile 6.5 m. The internal wave amplitudes are normally distributed. The tails of the distribution deviate from normality due to episodic high-amplitude displacements. The sporadic appearance of internal waves with amplitudes exceeding approximately 5 m usually coincided with patches of low Richardson numbers, pointing to local shear instability as a possible mechanism of internal-wave-induced turbulence. The probability of shear instability in the summer BoB pycnocline based on an exponential distribution of the inverse Richardson number, however, appears to be relatively low, not exceeding 4% for Ri < 0.25 and about 10% for Ri < 0.36 (K-H billows). The probability of the generation of asymmetric breaking internal waves and Holmboe instabilities is above approximately 25%. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Oceans AU - Lozovatsky, Iossif AU - Wijesekera, Hemantha AU - Jarosz, Ewa AU - Lilover, Madis-Jaak AU - Pirro, Annunziata AU - Silver, Zachariah AU - Centurioni, Luca AU - Fernando, H J S Y1 - 2016/08// PY - 2016 DA - August 2016 SP - 5898 EP - 5915 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 121 IS - 8 SN - 2169-9275, 2169-9275 KW - currents KW - sea water KW - time series analysis KW - statistical analysis KW - stability KW - southern Bay of Bengal KW - salinity KW - ocean currents KW - temperature KW - Indian Ocean KW - Bay of Bengal KW - stratification KW - ocean waves KW - velocity KW - hydrodynamics KW - spectra KW - acoustic Doppler current profiler data KW - backscattering KW - internal waves KW - 07:Oceanography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849309959?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Oceans&rft.atitle=A+snapshot+of+internal+waves+and+hydrodynamic+instabilities+in+the+southern+Bay+of+Bengal&rft.au=Lozovatsky%2C+Iossif%3BWijesekera%2C+Hemantha%3BJarosz%2C+Ewa%3BLilover%2C+Madis-Jaak%3BPirro%2C+Annunziata%3BSilver%2C+Zachariah%3BCenturioni%2C+Luca%3BFernando%2C+H+J+S&rft.aulast=Lozovatsky&rft.aufirst=Iossif&rft.date=2016-08-01&rft.volume=121&rft.issue=8&rft.spage=5898&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Oceans&rft.issn=21699275&rft_id=info:doi/10.1002%2F2016JC011697 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 52 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table, sketch map N1 - Last updated - 2016-12-16 N1 - SubjectsTermNotLitGenreText - acoustic Doppler current profiler data; backscattering; Bay of Bengal; currents; hydrodynamics; Indian Ocean; internal waves; ocean currents; ocean waves; salinity; sea water; southern Bay of Bengal; spectra; stability; statistical analysis; stratification; temperature; time series analysis; velocity DO - http://dx.doi.org/10.1002/2016JC011697 ER - TY - JOUR T1 - Scale Dependence of Land-Atmosphere Interactions in Wet and Dry Regions as Simulated with NU-WRF over the Southwestern and South-Central United States AN - 1846409881; PQ0003820304 AB - Large-scale forcing and land-atmosphere interactions on precipitation are investigated with NASA-Unified WRF (NU-WRF) simulations during fast transitions of ENSO phases from spring to early summer of 2010 and 2011. The model is found to capture major precipitation episodes in the 3-month simulations without resorting to nudging. However, the mean intensity of the simulated precipitation is underestimated by 46% and 57% compared with the observations in dry and wet regions in the southwestern and south-central United States, respectively. Sensitivity studies show that large-scale atmospheric forcing plays a major role in producing regional precipitation. A methodology to account for moisture contributions to individual precipitation events, as well as total precipitation, is presented under the same moisture budget framework. The analysis shows that the relative contributions of local evaporation and large-scale moisture convergence depend on the dry/wet regions and are a function of temporal and spatial scales. While the ratio of local and large-scale moisture contributions vary with domain size and weather system, evaporation provides a major moisture source in the dry region and during light rain events, which leads to greater sensitivity to soil moisture in the dry region and during light rain events. The feedback of land surface processes to large-scale forcing is well simulated, as indicated by changes in atmospheric circulation and moisture convergence. Overall, the results reveal an asymmetrical response of precipitation events to soil moisture, with higher sensitivity under dry than wet conditions. Drier soil moisture tends to suppress further existing below-normal precipitation conditions via a positive soil moisture-land surface flux feedback that could worsen drought conditions in the southwestern United States. JF - Journal of Hydrometeorology AU - Zhou, Yaping AU - Wu, Di AU - K-M Lau, William AU - Tao, Wei-Kuo AD - GESTAR, Morgan State University, Baltimore, and Laboratory for Atmospheres, NASA Goddard Space Flight Center, Greenbelt, Maryland Y1 - 2016/08// PY - 2016 DA - August 2016 SP - 2121 EP - 2136 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 17 IS - 8 SN - 1525-755X, 1525-755X KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Evaporation KW - Drought conditions KW - Soil Water KW - Convergence KW - Soils KW - Surface fluxes KW - Droughts KW - Moisture budget KW - Modelling KW - El Nino phenomena KW - Atmospheric precipitations KW - Weather KW - Atmospheric circulation changes KW - Simulation Analysis KW - Atmospheric circulation KW - Precipitation KW - Southern Oscillation KW - Atmospheric circulation processes KW - USA KW - Hydrometeorological research KW - Numerical simulations KW - El Nino-Southern Oscillation event KW - Atmospheric forcing KW - Moisture Content KW - Rain KW - Land-atmosphere interaction KW - Soil moisture KW - AQ 00001:Water Resources and Supplies KW - SW 0810:General KW - Q2 09182:Methods and instruments KW - M2 556.13:Evaporation/Evapotranspiration (556.13) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1846409881?accountid=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=Scale+Dependence+of+Land-Atmosphere+Interactions+in+Wet+and+Dry+Regions+as+Simulated+with+NU-WRF+over+the+Southwestern+and+South-Central+United+States&rft.au=Zhou%2C+Yaping%3BWu%2C+Di%3BK-M+Lau%2C+William%3BTao%2C+Wei-Kuo&rft.aulast=Zhou&rft.aufirst=Yaping&rft.date=2016-08-01&rft.volume=17&rft.issue=8&rft.spage=2121&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrometeorology&rft.issn=1525755X&rft_id=info:doi/10.1175%2FJHM-D-16-0024.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-12-01 N1 - Number of references - 83 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Atmospheric precipitations; Atmospheric forcing; Soils; Droughts; El Nino phenomena; Modelling; Southern Oscillation; Atmospheric circulation changes; Evaporation; Drought conditions; Atmospheric circulation; Precipitation; Atmospheric circulation processes; Hydrometeorological research; Numerical simulations; Convergence; El Nino-Southern Oscillation event; Surface fluxes; Soil moisture; Land-atmosphere interaction; Moisture budget; Weather; Simulation Analysis; Moisture Content; Rain; Soil Water; USA DO - http://dx.doi.org/10.1175/JHM-D-16-0024.1 ER - TY - JOUR T1 - Perchlorate formation on Mars through surface radiolysis-initiated atmospheric chemistry; a potential mechanism AN - 1840620979; 2016-096579 AB - Recent observations of the Martian surface by the Phoenix lander and the Sample Analysis at Mars indicate the presence of perchlorate (ClO (sub 4) (super -) ). The abundance and isotopic composition of these perchlorates suggest that the mechanisms responsible for their formation in the Martian environment may be unique in our solar system. With this in mind, we propose a potential mechanism for the production of Martian perchlorate: the radiolysis of the Martian surface by galactic cosmic rays, followed by the sublimation of chlorine oxides into the atmosphere and their subsequent synthesis to form perchloric acid (HClO (sub 4) ) in the atmosphere, and the surface deposition and subsequent mineralization of HClO (sub 4) in the regolith to form surface perchlorates. To evaluate the viability of this mechanism, we employ a one-dimensional chemical model, examining chlorine chemistry in the context of Martian atmospheric chemistry. Considering the chlorine oxide, OClO, we find that an OClO flux as low as 3.2 X 10 (super 7) molecules cm (super -2) s (super -1) sublimated into the atmosphere from the surface could produce sufficient HClO (sub 4) to explain the perchlorate concentration on Mars, assuming an accumulation depth of 30 cm and integrated over the Amazonian period. Radiolysis provides an efficient pathway for the oxidation of chlorine, bypassing the efficient Cl/HCl recycling mechanism that characterizes HClO (sub 4) formation mechanisms proposed for the Earth but not Mars. Abstract Copyright (2016), . The Authors. JF - Journal of Geophysical Research: Planets AU - Wilson, Eric H AU - Atreya, Sushil K AU - Kaiser, Ralf I AU - Mahaffy, Paul R Y1 - 2016/08// PY - 2016 DA - August 2016 SP - 1472 EP - 1487 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 121 IS - 8 SN - 2169-9097, 2169-9097 KW - chlorine KW - isotopes KW - isotope ratios KW - halogens KW - atmosphere KW - Mars KW - stable isotopes KW - perchlorate KW - terrestrial planets KW - planets KW - Amazonian KW - Cl-37/Cl-35 KW - solar radiation KW - radiolysis KW - Phoenix Lander KW - chemical composition KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840620979?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Determination+of+the+amount+of+peroxy+in+granite+rock+using+the+Seebeck+Effect&rft.au=Tregloan-Reed%2C+Jeremy+James%3BTarnas%2C+Jesse%3BPlante%2C+Zach%3BFreund%2C+Friedemann+T%3BAnonymous&rft.aulast=Tregloan-Reed&rft.aufirst=Jeremy&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9100 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 115 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2016-11-17 N1 - SubjectsTermNotLitGenreText - Amazonian; atmosphere; chemical composition; chlorine; Cl-37/Cl-35; halogens; isotope ratios; isotopes; Mars; perchlorate; Phoenix Lander; planets; radiolysis; solar radiation; stable isotopes; terrestrial planets DO - http://dx.doi.org/10.1002/2016JE005078 ER - TY - JOUR T1 - Observations of two sprite-producing storms in Colorado AN - 1827914940; PQ0003655432 AB - Two sprite-producing thunderstorms were observed on 8 and 25 June 2012 in northeastern Colorado by a combination of low-light cameras, a lightning mapping array, polarimetric and Doppler radars, the National Lightning Detection Network, and charge moment change measurements. The 8 June event evolved from a tornadic hailstorm to a larger multicellular system that produced 21 observed positive sprites in 2h. The majority of sprites occurred during a lull in convective strength, as measured by total flash rate, flash energy, and radar echo volume. Mean flash area spiked multiple times during this period; however, total flash rates still exceeded 60min super(-1), and portions of the storm featured a complex anomalous charge structure, with midlevel positive charge near -20 degree C. The storm produced predominantly positive cloud-to-ground lightning. All sprite-parent flashes occurred on the northeastern flank of the storm, where strong westerly upper level flow was consistent with advection of charged precipitation away from convection, providing a pathway for stratiform lightning. The 25 June event was another multicellular hailstorm with an anomalous charge structure that produced 26 positive sprites in less than 1h. The sprites again occurred during a convective lull, with relatively weaker reflectivity and lower total flash rate but relatively larger mean flash area. However, all sprite parents occurred in or near convection and tapped charge layers in adjacent anvil cloud. The results demonstrate the sprite production by convective ground strokes in anomalously charged storms and also indicate that sprite production and convective vigor are inversely related in mature storms. Key Points * Positive sprites were observed over anomalously electrified convection in Colorado * Sprites did not occur until intense, mature convection began weakening * Polarimetric and multi-Doppler radar analyses indicated effects of storm microphysics and kinematics on sprite-parent lightning JF - Journal of Geophysical Research: Atmospheres AU - Lang, Timothy J AU - Lyons, Walter A AU - Cummer, Steven A AU - Fuchs, Brody R AU - Dolan, Brenda AU - Rutledge, Steven A AU - Krehbiel, Paul AU - Rison, William AU - Stanley, Mark AU - Ashcraft, Thomas AD - National Aeronautics and Space Administration George C. Marshall Space Flight Center, Huntsville, Alabama, USA. Y1 - 2016/08// PY - 2016 DA - August 2016 SP - 9675 EP - 9695 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 121 IS - 16 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Flow KW - Convection KW - Cloud-to-ground lightning KW - Anvils KW - Reflectance KW - Lightning KW - Westerlies KW - Thunderstorms KW - Convection development KW - Current observations KW - Storms KW - Advection KW - Mapping KW - Thunderstorm detection KW - Sprites KW - Hailstorms KW - Thunderstorm observations KW - Precipitation KW - Clouds KW - USA, Colorado KW - Doppler radar KW - Convective activity KW - Cameras KW - Radar KW - M2 551.593:Optical (551.593) KW - SW 0810:General KW - Q2 09244:Air-sea coupling UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1827914940?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=Observations+of+two+sprite-producing+storms+in+Colorado&rft.au=Lang%2C+Timothy+J%3BLyons%2C+Walter+A%3BCummer%2C+Steven+A%3BFuchs%2C+Brody+R%3BDolan%2C+Brenda%3BRutledge%2C+Steven+A%3BKrehbiel%2C+Paul%3BRison%2C+William%3BStanley%2C+Mark%3BAshcraft%2C+Thomas&rft.aulast=Lang&rft.aufirst=Timothy&rft.date=2016-08-01&rft.volume=121&rft.issue=16&rft.spage=9675&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2016JD025299 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-10-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Convection; Reflectance; Lightning; Radar; Cameras; Westerlies; Mapping; Current observations; Storms; Sprites; Anvils; Cloud-to-ground lightning; Hailstorms; Thunderstorms; Convection development; Thunderstorm observations; Clouds; Doppler radar; Convective activity; Thunderstorm detection; Flow; Precipitation; Advection; USA, Colorado DO - http://dx.doi.org/10.1002/2016JD025299 ER - TY - JOUR T1 - Testing the two-layer model for correcting near-cloud reflectance enhancement using LES/SHDOM-simulated radiances AN - 1827902957; PQ0003655456 AB - A transition zone exists between cloudy skies and clear sky; such that, clouds scatter solar radiation into clear-sky regions. From a satellite perspective, it appears that clouds enhance the radiation nearby. We seek a simple method to estimate this enhancement, since it is so computationally expensive to account for all three-dimensional (3-D) scattering processes. In previous studies, we developed a simple two-layer model (2LM) that estimated the radiation scattered via cloud-molecular interactions. Here we have developed a new model to account for cloud-surface interaction (CSI). We test the models by comparing to calculations provided by full 3-D radiative transfer simulations of realistic cloud scenes. For these scenes, the Moderate Resolution Imaging Spectroradiometer (MODIS)-like radiance fields were computed from the Spherical Harmonic Discrete Ordinate Method (SHDOM), based on a large number of cumulus fields simulated by the University of California, Los Angeles (UCLA) large eddy simulation (LES) model. We find that the original 2LM model that estimates cloud-air molecule interactions accounts for 64% of the total reflectance enhancement and the new model (2LM+CSI) that also includes cloud-surface interactions accounts for nearly 80%. We discuss the possibility of accounting for cloud-aerosol radiative interactions in 3-D cloud-induced reflectance enhancement, which may explain the remaining 20% of enhancements. Because these are simple models, these corrections can be applied to global satellite observations (e.g., MODIS) and help to reduce biases in aerosol and other clear-sky retrievals. Key Points * We present a method to account for cloud-surface interactions for cloud-induced clear-sky reflectance enhancement * We quantified errors in our models for estimating cloud-induced reflectance enhancement * We demonstrated the possibility to account for cloud-aerosol interactions for the enhancement JF - Journal of Geophysical Research: Atmospheres AU - Wen, Guoyong AU - Marshak, Alexander AU - Varnai, Tamas AU - Levy, Robert AD - NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2016/08// PY - 2016 DA - August 2016 SP - 9661 EP - 9674 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 121 IS - 16 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Reflectance KW - Solar radiation KW - Radiance KW - Radiation KW - MODIS (Moderate Resolution Imaging Spectrometer) KW - Modelling KW - USA, California, Los Angeles KW - Solar Radiation KW - Aerosols KW - Simulation Analysis KW - Transition Zone KW - Large eddy simulations KW - Imaging techniques KW - Methodology KW - Clouds KW - Satellite data KW - Eddies KW - Numerical simulations KW - Radiative transfer KW - M2 551.510.42:Air Pollution (551.510.42) KW - SW 0810:General KW - Q2 09244:Air-sea coupling UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1827902957?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=Testing+the+two-layer+model+for+correcting+near-cloud+reflectance+enhancement+using+LES%2FSHDOM-simulated+radiances&rft.au=Wen%2C+Guoyong%3BMarshak%2C+Alexander%3BVarnai%2C+Tamas%3BLevy%2C+Robert&rft.aulast=Wen&rft.aufirst=Guoyong&rft.date=2016-08-01&rft.volume=121&rft.issue=16&rft.spage=9661&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2016JD025021 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-10-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Clouds; Radiance; Aerosols; Reflectance; Radiation; Radiative transfer; Imaging techniques; Methodology; Modelling; Satellite data; Numerical simulations; MODIS (Moderate Resolution Imaging Spectrometer); Solar radiation; Large eddy simulations; Solar Radiation; Eddies; Simulation Analysis; Transition Zone; USA, California, Los Angeles DO - http://dx.doi.org/10.1002/2016JD025021 ER - TY - JOUR T1 - Optimal Reorganization of NASA Earth Science Data for Enhanced Accessibility and Usability for the Hydrology Community AN - 1819148062; PQ0003638469 AB - A long-standing "Digital Divide" in data representation exists between the preferred way of data access by the hydrology community and the common way of data archival by earth science data centers. Typically, in hydrology, earth surface features are expressed as discrete spatial objects (e.g., watersheds), and time-varying data are contained in associated time series. Data in earth science archives, although stored as discrete values (of satellite swath pixels or geographical grids), represent continuous spatial fields, one file per time step. This Divide has been an obstacle, specifically, between the Consortium of Universities for the Advancement of Hydrologic Science, Inc. and NASA earth science data systems. In essence, the way data are archived is conceptually orthogonal to the desired method of access. Our recent work has shown an optimal method of bridging the Divide, by enabling operational access to long-time series (e.g., 36 years of hourly data) of selected NASA datasets. These time series, which we have termed "data rods," are pre-generated or generated on-the-fly. This optimal solution was arrived at after extensive investigations of various approaches, including one based on "data curtains." The on-the-fly generation of data rods uses "data cubes," NASA Giovanni, and parallel processing. The optimal reorganization of NASA earth science data has significantly enhanced the access to and use of the data for the hydrology user community. JF - Journal of the American Water Resources Association AU - Teng, William AU - Rui, Hualan AU - Strub, Richard AU - Vollmer, Bruce AD - ADNET Systems, Inc. at NASA Goddard Earth Sciences Data and Information Services Center, Code 610.2, Greenbelt, Maryland, 20771. Y1 - 2016/08// PY - 2016 DA - August 2016 SP - 825 EP - 835 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 52 IS - 4 SN - 1093-474X, 1093-474X KW - Environment Abstracts; Aqualine Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts KW - Remote Sensing KW - Satellite Technology KW - time series KW - Remote sensing KW - Water resources KW - Watersheds KW - Satellites KW - Methodology KW - Hydrology KW - Archives KW - Hydrologic Data KW - Earth sciences KW - Water Resources KW - AQ 00001:Water Resources and Supplies KW - ENA 06:Food & Drugs KW - SW 0810:General KW - Q5 08505:Prevention and control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819148062?accountid=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+the+American+Water+Resources+Association&rft.atitle=Optimal+Reorganization+of+NASA+Earth+Science+Data+for+Enhanced+Accessibility+and+Usability+for+the+Hydrology+Community&rft.au=Teng%2C+William%3BRui%2C+Hualan%3BStrub%2C+Richard%3BVollmer%2C+Bruce&rft.aulast=Teng&rft.aufirst=William&rft.date=2016-08-01&rft.volume=52&rft.issue=4&rft.spage=825&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+American+Water+Resources+Association&rft.issn=1093474X&rft_id=info:doi/10.1111%2F1752-1688.12405 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-09-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Water resources; Hydrology; Archives; Watersheds; Methodology; time series; Remote sensing; Satellites; Earth sciences; Remote Sensing; Satellite Technology; Hydrologic Data; Water Resources DO - http://dx.doi.org/10.1111/1752-1688.12405 ER - TY - JOUR T1 - Oxygen isotopic variations in the outer margins and Wark-Lovering rims of refractory inclusions AN - 1812216551; 2016-069261 AB - Oxygen isotopic variations across the outer margins and Wark-Lovering (WL) rims of a diverse suite of six coarse-grained Types A and B refractory inclusions from both oxidized and reduced CV3 chondrites suggest that CAIs originated from a (super 16) O-rich protosolar gas reservoir and were later exposed to both relatively (super 17,18) O-rich and (super 16) O-rich reservoirs. The O-isotope profiles of CAIs can be explained by changes in the composition of gas near the protoSun or the migration of CAIs through a heterogeneous nebula. Variability within the inclusion interiors appears to have been set prior to WL rim growth. Modeling the isotopic zoning profiles as diffusion gradients between inclusion interiors and edges establishes a range of permissible time-temperature combinations for their exposure in the nebula. At mean temperatures of 1400 K, models that match the isotope gradients in the inclusions yield timescales ranging from 5 X 10 (super 3) to 3 X 10 (super 5) years. Assuming CAIs originated with a relatively (super 16) O-rich (protosolar) isotopic composition, differences among the melilite interiors and the isotopic gradients in their margins imply the existence of a number of isotopically distinct reservoirs. Evidence at the edges of some CAIs for subsequent isotopic exchange may relate to the beginning of rim formation. In the WL rim layers surrounding the interiors, spinel is relatively (super 16) O-rich but subtly distinct among different CAIs. Melilite is often relatively (super 16) O-poor, but rare relatively (super 16) O-rich grains also exist. Pyroxene generally exhibits intermediate O-isotope compositions and isotopic zoning. Olivine in both WL and accretionary rims, when present, is isotopically heterogeneous. The extreme isotopic heterogeneity among and within individual WL rim layers and in particular, the observed trends of outward (super 16) O-enrichments, suggest that rims surrounding CAIs contained in CV3 chondrites, like the inclusions themselves, formed from a number of isotopically distinct gas reservoirs. Collectively, these results support numerical protoplanetary disk models in which CAIs were transported between several distinct nebular reservoirs multiple times prior to accretion onto a parent body. JF - Geochimica et Cosmochimica Acta AU - Simon, Justin I AU - Matzel, Jennifer E P AU - Simon, Steven B AU - Hutcheon, Ian D AU - Ross, D Kent AU - Weber, Peter K AU - Grossman, Lawrence Y1 - 2016/08// PY - 2016 DA - August 2016 SP - 242 EP - 276 PB - Elsevier, New York, NY VL - 186 SN - 0016-7037, 0016-7037 KW - stony meteorites KW - oxygen KW - ion probe data KW - isotopes KW - refractory materials KW - calcium-aluminum inclusions KW - mass spectra KW - CV chondrites KW - stable isotopes KW - variations KW - temperature KW - electron probe data KW - meteorites KW - Wark-Lovering rims KW - inclusions KW - spectra KW - mineral assemblages KW - chondrites KW - P-T conditions KW - solar system KW - isotope ratios KW - statistical analysis KW - electron microscopy data KW - O-18/O-16 KW - carbonaceous chondrites KW - terrestrial planets KW - reaction rims KW - models KW - mineral inclusions KW - planets KW - mathematical methods KW - NanoSIMS KW - temporal distribution KW - crystal chemistry KW - SEM data KW - 05B:Petrology of meteorites and tektites KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1812216551?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Oxygen+isotopic+variations+in+the+outer+margins+and+Wark-Lovering+rims+of+refractory+inclusions&rft.au=Simon%2C+Justin+I%3BMatzel%2C+Jennifer+E+P%3BSimon%2C+Steven+B%3BHutcheon%2C+Ian+D%3BRoss%2C+D+Kent%3BWeber%2C+Peter+K%3BGrossman%2C+Lawrence&rft.aulast=Simon&rft.aufirst=Justin&rft.date=2016-08-01&rft.volume=186&rft.issue=&rft.spage=242&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2016.04.025 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 87 N1 - PubXState - NY N1 - Document feature - illus. incl. 4 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-08-18 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - calcium-aluminum inclusions; carbonaceous chondrites; chondrites; crystal chemistry; CV chondrites; electron microscopy data; electron probe data; inclusions; ion probe data; isotope ratios; isotopes; mass spectra; mathematical methods; meteorites; mineral assemblages; mineral inclusions; models; NanoSIMS; O-18/O-16; oxygen; P-T conditions; planets; reaction rims; refractory materials; SEM data; solar system; spectra; stable isotopes; statistical analysis; stony meteorites; temperature; temporal distribution; terrestrial planets; variations; Wark-Lovering rims DO - http://dx.doi.org/10.1016/j.gca.2016.04.025 ER - TY - JOUR T1 - Fate of water pumped from underground and contributions to sea-level rise AN - 1811878499; PQ0003543939 AB - The contributions from terrestrial water sources to sea-level rise, other than ice caps and glaciers, are highly uncertain and heavily debated. Recent assessments indicate that groundwater depletion (GWD) may become the most important positive terrestrial contribution over the next 50 years, probably equal in magnitude to the current contributions from glaciers and ice caps. However, the existing estimates assume that nearly 100% of groundwater extracted eventually ends up in the oceans. Owing to limited knowledge of the pathways and mechanisms governing the ultimate fate of pumped groundwater, the relative fraction of global GWD that contributes to sea-level rise remains unknown. Here, using a coupled climate-hydrological model simulation, we show that only 80% of GWD ends up in the ocean. An increase in runoff to the ocean accounts for roughly two-thirds, whereas the remainder results from the enhanced net flux of precipitation minus evaporation over the ocean, due to increased atmospheric vapour transport from the land to the ocean. The contribution of GWD to global sea-level rise amounted to 0.02 ( plus or minus 0.004)mmyr super(-1) in 1900 and increased to 0.27 ( plus or minus 0.04)mmyr super(-1) in 2000. This indicates that existing studies have substantially overestimated the contribution of GWD to global sea-level rise by a cumulative amount of at least 10mm during the twentieth century and early twenty-first century. With other terrestrial water contributions included, we estimate the net terrestrial water contribution during the period 1993-2010 to be +0.12 ( plus or minus 0.04)mmyr super(-1), suggesting that the net terrestrial water contribution reported in the IPCC Fifth Assessment Report report is probably overestimated by a factor of three. JF - Nature Climate Change AU - Wada, Yoshihide AU - Lo, Min-Hui AU - Yeh, Pat J-F AU - Reager, John T AU - Famiglietti, James S AU - Wu, Ren-Jie AU - Tseng, Yu-Heng AD - NASA Goddard Institute for Space Studies, New York, New York 10025, USA; Center for Climate Systems Research, Columbia University, New York, New York 10025, USA; Department of Physical Geography, Utrecht University, 3584 CS Utrecht, The Netherlands; International Institute for Applied Systems Analysis, A-2361 Laxenburg, Austria Y1 - 2016/08// PY - 2016 DA - August 2016 SP - 777 EP - 780 PB - Nature Publishing Group, The Macmillan Building London N1 9XW United Kingdom VL - 6 IS - 8 SN - 1758-678X, 1758-678X KW - Environment Abstracts; Meteorological & Geoastrophysical Abstracts KW - Sea level KW - Evaporation KW - Rainfall runoff KW - Rainfall KW - Glaciers KW - Climate change KW - Sea level rise KW - Simulation KW - Precipitation KW - Intergovernmental Panel on Climate Change KW - Groundwater depletion KW - Numerical simulations KW - Oceans KW - Water sources KW - Groundwater KW - Ice caps KW - M2 551.583:Variations (551.583) KW - ENA 01:Air Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1811878499?accountid=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+Climate+Change&rft.atitle=Fate+of+water+pumped+from+underground+and+contributions+to+sea-level+rise&rft.au=Wada%2C+Yoshihide%3BLo%2C+Min-Hui%3BYeh%2C+Pat+J-F%3BReager%2C+John+T%3BFamiglietti%2C+James+S%3BWu%2C+Ren-Jie%3BTseng%2C+Yu-Heng&rft.aulast=Wada&rft.aufirst=Yoshihide&rft.date=2016-08-01&rft.volume=6&rft.issue=8&rft.spage=777&rft.isbn=&rft.btitle=&rft.title=Nature+Climate+Change&rft.issn=1758678X&rft_id=info:doi/10.1038%2Fnclimate3001 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-08-01 N1 - Last updated - 2016-11-09 N1 - SubjectsTermNotLitGenreText - Groundwater depletion; Numerical simulations; Rainfall runoff; Evaporation; Climate change; Sea level rise; Water sources; Intergovernmental Panel on Climate Change; Precipitation; Ice caps; Sea level; Rainfall; Oceans; Glaciers; Simulation; Groundwater DO - http://dx.doi.org/10.1038/nclimate3001 ER - TY - JOUR T1 - Measurements of fog water interception by shrubs on the California central coast AN - 1808714950; PQ0003470643 AB - Fog water deposition may be an important component of the water budget of herbaceous-shrub ecosystems on the central and southern coastal regions of California. This paper presents the first analysis of measured fog water drip rates and meteorological controls in shrublands of Big Sur, California. Seasonal totals of 1255 mm and 306 mm of fog water drip were recorded in 2014 and 2015 (respectively), for averaged fog deposition rates of 0.02-0.08 l m super(2) hr. super(-1) to the soil under shrub canopy cover. The diurnal patterns of fog water drip showed that the majority of all trough water collected under shrubs on no-rain days occurred between the hours of 11 PM and 9 AM. During the study period from June 1 to October 31 of both 2014 and 2015, soil water content decreased significantly from average levels of 4-6 % at the shrub canopy center and middle locations, through 2-3 % VWC at the shrub edge locations, to levels at or below 2 % at 2-m distance locations from the shrub edge in open grass cover. Based on these results, we conclude that detectable rates of shrub canopy fog interception help sustain elevated soil water levels under shrubs and aid woody vegetation survival through periods of low rainfall. JF - Journal of Coastal Conservation AU - Potter, Christopher AD - NASA Ames Research Center, Moffett Field, CA, 94035, USA, chris.potter@nasa.gov Y1 - 2016/08// PY - 2016 DA - August 2016 SP - 315 EP - 325 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 20 IS - 4 SN - 1400-0350, 1400-0350 KW - Sustainability Science Abstracts; Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Environment Abstracts; Ecology Abstracts KW - Ecosystems KW - Grasses KW - Water budget KW - Rainfall KW - Survival KW - Soil KW - Water levels KW - Sulfur dioxide KW - Soils KW - Meteorology KW - Canopies KW - Coasts KW - Shrubs KW - Diurnal variations KW - Vegetation KW - Water content KW - Fog KW - Coastal zone KW - INE, USA, California, Big Sur KW - Conservation KW - M3 1010:Issues in Sustainable Development KW - O 4080:Pollution - Control and Prevention KW - Q5 08504:Effects on organisms KW - ENA 12:Oceans & Estuaries KW - D 04060:Management and Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808714950?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Coastal+Conservation&rft.atitle=Measurements+of+fog+water+interception+by+shrubs+on+the+California+central+coast&rft.au=Potter%2C+Christopher&rft.aulast=Potter&rft.aufirst=Christopher&rft.date=2016-08-01&rft.volume=20&rft.issue=4&rft.spage=315&rft.isbn=&rft.btitle=&rft.title=Journal+of+Coastal+Conservation&rft.issn=14000350&rft_id=info:doi/10.1007%2Fs11852-016-0443-y LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-07-01 N1 - Number of references - 26 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Water levels; Water budget; Soils; Canopies; Fog; Soil; Shrubs; Grasses; Rainfall; Vegetation; Conservation; Survival; Water content; Coasts; Diurnal variations; Ecosystems; Coastal zone; Sulfur dioxide; Meteorology; INE, USA, California, Big Sur DO - http://dx.doi.org/10.1007/s11852-016-0443-y ER - TY - JOUR T1 - Two-Year Comparison of Airborne Measurements of CO sub(2) and CH sub(4) With GOSAT at Railroad Valley, Nevada AN - 1808696739; PQ0003274258 AB - The Alpha Jet Atmospheric eXperiment (AJAX) is a project to measure the atmospheric profiles of greenhouse gases (GHGs) and ozone (O sub(3)) regularly over California and Nevada. Airborne instruments measuring GHGs and O sub(3 ) are installed in a wing pod of an Alpha Jet aircraft and operated from the National Aeronautics and Space Administration Ames Research Center at Moffett Field, CA. The instruments yield precise and accurate in situ vertical profiles of atmospheric carbon dioxide (CO sub(2)), methane (CH sub(4)), and O sub(3). Measurements of vertical profiles of GHGs and O sub(3) over Railroad Valley, NV have been conducted directly under the Greenhouse gases Observing SATellite (GOSAT) over passes on a monthly basis as part of the AJAX project since June 2011. The purpose of this work is to calculate aircraft-based dry-air mole fractions of the GHGs for the validation of GOSAT data products. This study expands and improves our previous comparisons by evaluating three algorithms against 24 months of in situ data collected over a Gain-M target. We used three different algorithms: Atmospheric CO sub(2) Observations from Space (ACOS v3.4r3), Remote Sensing of Greenhouse Gases for Carbon Cycle Modeling (RemoteC v2.3.5FP), and National Institute for Environmental Studies (NIES v2.11). We find that the CO sub(2) average differences of ACOS and RemoteC from AJAX are 0.26% and 0.24%, respectively. The difference between NIES and AJAX is 0.96%, which is higher than that of ACOS and RemoteC. The CH sub(4) average differences for RemoteC and NIES are 2.1% and 1.7%, respectively. JF - IEEE Transactions on Geoscience and Remote Sensing AU - Tanaka, Tomoaki AU - Yates, Emma AU - Iraci, Laura T AU - Johnson, Matthew S AU - Gore, Warren AU - Tadic, Jovan M AU - Loewenstein, Max AU - Kuze, Akihiko AU - Frankenberg, Christian AU - Butz, Andre AU - Yoshida, Yukio AD - NASA Ames Research Center, Moffett Field, CA, USA Y1 - 2016/08// PY - 2016 DA - August 2016 SP - 4367 EP - 4375 PB - Institute of Electrical and Electronics Engineers, Inc., 345 E. 47th St. NY NY 10017-2394 United States VL - 54 IS - 8 SN - 0196-2892, 0196-2892 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Remote Sensing KW - Satellite Technology KW - Methane KW - Climate change KW - Algorithms KW - Remote sensing KW - Carbon cycle KW - Wings KW - Greenhouse effect KW - USA, Nevada KW - Vertical profiles KW - Aircraft KW - Profiles KW - INE, USA, California KW - Railroads KW - Carbon Cycle KW - Carbon dioxide KW - Carbon Dioxide KW - Ozone KW - Q2 09102:Institutes and organizations KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808696739?accountid=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=IEEE+Transactions+on+Geoscience+and+Remote+Sensing&rft.atitle=Chemical+composition+of+diagenetic+features+at+lower+Aeolis+Mons%2C+Mars+as+measured+by+curiosity%27s+APXS&rft.au=Berger%2C+Jeff+A%3BSchmidt%2C+Mariek+E%3BGellert%2C+Ralf%3BBoyd%2C+Nick%3BCampbell%2C+John+L%3BDesouza%2C+Elstan%3BFisk%2C+Martin+R%3BPerrett%2C+Glynis+M%3BThompson%2C+Lucy+M%3BVanBommel%2C+Scott%3BYen%2C+Albert+S%3BAnonymous&rft.aulast=Berger&rft.aufirst=Jeff&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-07-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Methane; Climate change; Wings; Carbon cycle; Remote sensing; Greenhouse effect; Carbon dioxide; Vertical profiles; Ozone; Remote Sensing; Satellite Technology; Aircraft; Profiles; Railroads; Algorithms; Carbon Cycle; Carbon Dioxide; INE, USA, California; USA, Nevada DO - http://dx.doi.org/10.1109/TGRS.2016.2539973 ER - TY - JOUR T1 - Assessment of the SMAP Passive Soil Moisture Product AN - 1808688562; PQ0003274279 AB - The National Aeronautics and Space Administration (NASA) Soil Moisture Active Passive (SMAP) satellite mission was launched on January 31, 2015. The observatory was developed to provide global mapping of high-resolution soil moisture and freeze-thaw state every two to three days using an L-band (active) radar and an L-band (passive) radiometer. After an irrecoverable hardware failure of the radar on July 7, 2015, the radiometer-only soil moisture product became the only operational soil moisture product for SMAP. The product provides soil moisture estimates posted on a 36 km Earth-fixed grid produced using brightness temperature observations from descending passes. Within months after the commissioning of the SMAP radiometer, the product was assessed to have attained preliminary (beta) science quality, and data were released to the public for evaluation in September 2015. The product is available from the NASA Distributed Active Archive Center at the National Snow and Ice Data Center. This paper provides a summary of the Level 2 Passive Soil Moisture Product (L2_SM_P) and its validation against in situ ground measurements collected from different data sources. Initial in situ comparisons conducted between March 31, 2015 and October 26, 2015, at a limited number of core validation sites (CVSs) and several hundred sparse network points, indicate that the V-pol Single Channel Algorithm (SCA-V) currently delivers the best performance among algorithms considered for L2_SM_P, based on several metrics. The accuracy of the soil moisture retrievals averaged over the CVSs was 0.038 m super(3)/m super(3) unbiased root-mean-square difference (ubRMSD), which approaches the SMAP mission requirement of 0.040 m super(3)/m super(3). JF - IEEE Transactions on Geoscience and Remote Sensing AU - Chan, Steven K AU - Bindlish, Rajat AU - E O'Neill, Peggy AU - Njoku, Eni AU - Jackson, Tom AU - Colliander, Andreas AU - Chen, Fan AU - Burgin, Mariko AU - Dunbar, Scott AU - Piepmeier, Jeffrey AU - Yueh, Simon AU - Entekhabi, Dara AU - Cosh, Michael H AU - Caldwell, Todd AU - Walker, Jeffrey AU - Wu, Xiaoling AU - Berg, Aaron AU - Rowlandson, Tracy AU - Pacheco, Anna AU - McNairn, Heather AU - Thibeault, Marc AU - Martinez-Fernandez, Jose AU - Gonzalez-Zamora, Angel AU - Seyfried, Mark AU - Bosch, David AU - Starks, Patrick AU - Goodrich, David AU - Prueger, John AU - Palecki, Michael AU - Small, Eric E AU - Zreda, Marek AU - Calvet, Jean-Christophe AU - Crow, Wade T AU - Kerr, Yann AD - NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA Y1 - 2016/08// PY - 2016 DA - August 2016 SP - 4994 EP - 5007 PB - Institute of Electrical and Electronics Engineers, Inc., 345 E. 47th St. NY NY 10017-2394 United States VL - 54 IS - 8 SN - 0196-2892, 0196-2892 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Remote Sensing KW - Satellite Technology KW - Mathematical models KW - Snow KW - Algorithms KW - Remote sensing KW - Soil Water KW - Surface radiation temperature KW - Channels KW - Evaluation KW - Radiometers KW - Assessments KW - Radar KW - Soils KW - Moisture Content KW - Mapping KW - Archives KW - Q2 09262:Methods and instruments KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808688562?accountid=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=IEEE+Transactions+on+Geoscience+and+Remote+Sensing&rft.atitle=Assessment+of+the+SMAP+Passive+Soil+Moisture+Product&rft.au=Chan%2C+Steven+K%3BBindlish%2C+Rajat%3BE+O%27Neill%2C+Peggy%3BNjoku%2C+Eni%3BJackson%2C+Tom%3BColliander%2C+Andreas%3BChen%2C+Fan%3BBurgin%2C+Mariko%3BDunbar%2C+Scott%3BPiepmeier%2C+Jeffrey%3BYueh%2C+Simon%3BEntekhabi%2C+Dara%3BCosh%2C+Michael+H%3BCaldwell%2C+Todd%3BWalker%2C+Jeffrey%3BWu%2C+Xiaoling%3BBerg%2C+Aaron%3BRowlandson%2C+Tracy%3BPacheco%2C+Anna%3BMcNairn%2C+Heather%3BThibeault%2C+Marc%3BMartinez-Fernandez%2C+Jose%3BGonzalez-Zamora%2C+Angel%3BSeyfried%2C+Mark%3BBosch%2C+David%3BStarks%2C+Patrick%3BGoodrich%2C+David%3BPrueger%2C+John%3BPalecki%2C+Michael%3BSmall%2C+Eric+E%3BZreda%2C+Marek%3BCalvet%2C+Jean-Christophe%3BCrow%2C+Wade+T%3BKerr%2C+Yann&rft.aulast=Chan&rft.aufirst=Steven&rft.date=2016-08-01&rft.volume=54&rft.issue=8&rft.spage=4994&rft.isbn=&rft.btitle=&rft.title=IEEE+Transactions+on+Geoscience+and+Remote+Sensing&rft.issn=01962892&rft_id=info:doi/10.1109%2FTGRS.2016.2561938 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-07-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Radiometers; Mathematical models; Snow; Soils; Remote sensing; Archives; Mapping; Surface radiation temperature; Evaluation; Channels; Remote Sensing; Satellite Technology; Assessments; Radar; Algorithms; Moisture Content; Soil Water DO - http://dx.doi.org/10.1109/TGRS.2016.2561938 ER - TY - JOUR T1 - Early degassing of lunar urKREEP by crust-breaching impact(s) AN - 1803777599; 2016-062982 AB - Current models for the Moon's formation have yet to fully account for the thermal evolution of the Moon in the presence of H (sub 2) O and other volatiles. Of particular importance is chlorine, since most lunar samples are characterised by unique heavy delta (super 37) Cl values, significantly deviating from those of other planetary materials, including Earth, for which delta (super 37) Cl values cluster around approximately 0 ppm. In order to unravel the cause(s) of the Moon's unique chlorine isotope signature, we performed a comprehensive study of high-precision in situ Cl isotope measurements of apatite from a suite of Apollo samples with a range of geochemical characteristics and petrologic types. The Cl-isotopic compositions measured in lunar apatite in the studied samples display a wide range of delta (super 37) Cl values (reaching a maximum value of +36 ppm), which are positively correlated with the amount of potassium (K), Rare Earth Element (REE) and phosphorous (P) (KREEP) component in each sample. Using these new data, integrated with existing H-isotope data obtained for the same samples, we are able to place these findings in the context of the canonical lunar magma ocean (LMO) model. The results are consistent with the urKREEP reservoir being characterised by a delta (super 37) Cl approximately +30 ppm. Such a heavy Cl isotope signature requires metal-chloride degassing from a Cl-enriched urKREEP LMO residue, a process likely to have been triggered by at least one large crust-breaching impact event that facilitated the transport and exposure of urKREEP liquid to the lunar surface. JF - Earth and Planetary Science Letters AU - Barnes, Jessica J AU - Tartese, Romain AU - Anand, Mahesh AU - McCubbin, Francis M AU - Neal, Clive R AU - Franchi, Ian A Y1 - 2016/08// PY - 2016 DA - August 2016 SP - 84 EP - 94 PB - Elsevier, Amsterdam VL - 447 SN - 0012-821X, 0012-821X KW - volcanic rocks KW - ion probe data KW - isotopes KW - igneous rocks KW - halogens KW - mass spectra KW - granulites KW - thermal history KW - stable isotopes KW - melts KW - metamorphic rocks KW - basalts KW - spectra KW - chlorine KW - magma oceans KW - Moon KW - isotope ratios KW - differentiation KW - impacts KW - gases KW - volatiles KW - lunar samples KW - KREEP KW - lunar crust KW - Cl-37/Cl-35 KW - NanoSIMS KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803777599?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Early+degassing+of+lunar+urKREEP+by+crust-breaching+impact%28s%29&rft.au=Barnes%2C+Jessica+J%3BTartese%2C+Romain%3BAnand%2C+Mahesh%3BMcCubbin%2C+Francis+M%3BNeal%2C+Clive+R%3BFranchi%2C+Ian+A&rft.aulast=Barnes&rft.aufirst=Jessica&rft.date=2016-08-01&rft.volume=447&rft.issue=&rft.spage=84&rft.isbn=&rft.btitle=&rft.title=Earth+and+Planetary+Science+Letters&rft.issn=0012821X&rft_id=info:doi/10.1016%2Fj.epsl.2016.04.036 L2 - http://www.sciencedirect.com/science/journal/0012821X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 49 N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-07-14 N1 - CODEN - EPSLA2 N1 - SubjectsTermNotLitGenreText - basalts; chlorine; Cl-37/Cl-35; differentiation; gases; granulites; halogens; igneous rocks; impacts; ion probe data; isotope ratios; isotopes; KREEP; lunar crust; lunar samples; magma oceans; mass spectra; melts; metamorphic rocks; Moon; NanoSIMS; spectra; stable isotopes; thermal history; volatiles; volcanic rocks DO - http://dx.doi.org/10.1016/j.epsl.2016.04.036 ER - TY - JOUR T1 - Cassini's geological and compositional view of Tethys AN - 1803776494; 2016-063121 JF - Icarus AU - Stephan, Katrin AU - Wagner, Roland AU - Jaumann, Ralf AU - Clark, Roger N AU - Cruikshank, Dale P AU - Brown, Robert H AU - Giese, Bernd AU - Roatsch, Thomas AU - Filacchione, Gianrico AU - Matson, Dennis L AU - Dalle Ore, Cristina AU - Capaccioni, Fabrizio AU - Baines, Kevin H AU - Rodriguez, Sebastien AU - Krupp, Norbert AU - Buratti, Bonnie J AU - Nicholson, Philip D Y1 - 2016/08// PY - 2016 DA - August 2016 SP - 1 EP - 22 PB - Elsevier, New York, NY VL - 274 SN - 0019-1035, 0019-1035 KW - water KW - Imaging Science Subsystem KW - surface properties KW - icy satellites KW - Odysseus Crater KW - impact features KW - Tethys Satellite KW - Ithaca Chasma KW - impacts KW - Rhea Satellite KW - ejecta KW - infrared spectra KW - grabens KW - morphology KW - Cassini-Huygens Mission KW - ice KW - composition KW - basins KW - impact craters KW - spectra KW - Dione Satellite KW - satellites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803776494?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Cassini%27s+geological+and+compositional+view+of+Tethys&rft.au=Stephan%2C+Katrin%3BWagner%2C+Roland%3BJaumann%2C+Ralf%3BClark%2C+Roger+N%3BCruikshank%2C+Dale+P%3BBrown%2C+Robert+H%3BGiese%2C+Bernd%3BRoatsch%2C+Thomas%3BFilacchione%2C+Gianrico%3BMatson%2C+Dennis+L%3BDalle+Ore%2C+Cristina%3BCapaccioni%2C+Fabrizio%3BBaines%2C+Kevin+H%3BRodriguez%2C+Sebastien%3BKrupp%2C+Norbert%3BBuratti%2C+Bonnie+J%3BNicholson%2C+Philip+D&rft.aulast=Stephan&rft.aufirst=Katrin&rft.date=2016-08-01&rft.volume=274&rft.issue=&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.03.002 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 63 N1 - PubXState - NY N1 - Document feature - illus. incl. geol. sketch maps N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - basins; Cassini-Huygens Mission; composition; Dione Satellite; ejecta; grabens; ice; icy satellites; Imaging Science Subsystem; impact craters; impact features; impacts; infrared spectra; Ithaca Chasma; morphology; Odysseus Crater; Rhea Satellite; satellites; spectra; surface properties; Tethys Satellite; water DO - http://dx.doi.org/10.1016/j.icarus.2016.03.002 ER - TY - JOUR T1 - Chromophores from photolyzed ammonia reacting with acetylene; application to Jupiter's Great Red Spot AN - 1803776449; 2016-063127 JF - Icarus AU - Carlson, Robert W AU - Baines, Kevin H AU - Anderson, M S AU - Filacchione, Gianrico AU - Simon, A A Y1 - 2016/08// PY - 2016 DA - August 2016 SP - 106 EP - 115 PB - Elsevier, New York, NY VL - 274 SN - 0019-1035, 0019-1035 KW - albedo KW - acetylene KW - altitude KW - optical spectra KW - Jupiter KW - aliphatic hydrocarbons KW - mass spectra KW - troposphere KW - ethane KW - Great Red Spot KW - infrared spectra KW - giant planets KW - Cassini-Huygens Mission KW - electromagnetic radiation KW - chromophores KW - alkynes KW - spectra KW - outer planets KW - ammonia compound KW - experimental studies KW - methane KW - gaseous phase KW - photochemistry KW - alkanes KW - ultraviolet radiation KW - planets KW - organic compounds KW - photolysis KW - hydrocarbons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803776449?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Chromophores+from+photolyzed+ammonia+reacting+with+acetylene%3B+application+to+Jupiter%27s+Great+Red+Spot&rft.au=Carlson%2C+Robert+W%3BBaines%2C+Kevin+H%3BAnderson%2C+M+S%3BFilacchione%2C+Gianrico%3BSimon%2C+A+A&rft.aulast=Carlson&rft.aufirst=Robert&rft.date=2016-08-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 79 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Includes appendix N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - acetylene; albedo; aliphatic hydrocarbons; alkanes; alkynes; altitude; ammonia compound; Cassini-Huygens Mission; chromophores; electromagnetic radiation; ethane; experimental studies; gaseous phase; giant planets; Great Red Spot; hydrocarbons; infrared spectra; Jupiter; mass spectra; methane; optical spectra; organic compounds; outer planets; photochemistry; photolysis; planets; spectra; troposphere; ultraviolet radiation DO - http://dx.doi.org/10.1016/j.icarus.2016.03.008 ER - TY - JOUR T1 - Oxidation of manganese in an ancient aquifer, Kimberley Formation, Gale Crater, Mars AN - 1859792271; 2017-004562 AB - The Curiosity rover observed high Mn abundances (>25 wt % MnO) in fracture-filling materials that crosscut sandstones in the Kimberley region of Gale crater, Mars. The correlation between Mn and trace metal abundances plus the lack of correlation between Mn and elements such as S, Cl, and C, reveals that these deposits are Mn oxides rather than evaporites or other salts. On Earth, environments that concentrate Mn and deposit Mn minerals require water and highly oxidizing conditions; hence, these findings suggest that similar processes occurred on Mars. Based on the strong association between Mn-oxide deposition and evolving atmospheric dioxygen levels on Earth, the presence of these Mn phases on Mars suggests that there was more abundant molecular oxygen within the atmosphere and some groundwaters of ancient Mars than in the present day. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Lanza, Nina L AU - Wiens, Roger C AU - Arvidson, Raymond E AU - Clark, Benton C AU - Fischer, Woodward W AU - Gellert, Ralf AU - Grotzinger, John P AU - Hurowitz, Joel A AU - McLennan, Scott M AU - Morris, Richard V AU - Rice, Melissa S AU - Bell, James F, III AU - Berger, Jeffrey A AU - Blaney, Diana L AU - Bridges, Nathan T AU - Calef, Fred, III AU - Campbell, John L AU - Clegg, Samuel M AU - Cousin, Agnes AU - Edgett, Kenneth S AU - Fabre, Cecile AU - Fisk, Martin R AU - Forni, Olivier AU - Frydenvang, Jens AU - Hardy, Keian R AU - Hardgrove, Craig AU - Johnson, Jeffrey R AU - Lasue, Jeremie AU - Le Mouelic, Stephane AU - Malin, Michael C AU - Mangold, Nicolas AU - Martin-Torres, Javier AU - Maurice, Sylvestre AU - McBride, Marie J AU - Ming, Douglas W AU - Newsom, Horton E AU - Ollila, Ann M AU - Sautter, Violaine AU - Schroeder, Susanne AU - Thompson, Lucy M AU - Treiman, Allan H AU - VanBommel, Scott AU - Vaniman, David T AU - Zorzano, Maria-Paz Y1 - 2016/07/28/ PY - 2016 DA - 2016 Jul 28 SP - 7398 EP - 7407 PB - American Geophysical Union, Washington, DC VL - 43 IS - 14 SN - 0094-8276, 0094-8276 KW - fractured materials KW - oxygen KW - enrichment KW - alpha particles KW - Mars KW - manganese KW - ground water KW - Gale Crater KW - major elements KW - Curiosity Rover KW - manganese oxides KW - oxides KW - interplanetary comparison KW - ChemCam KW - spectra KW - chemical composition KW - geochemistry KW - concentration KW - Earth KW - Mount Remarkable Member KW - paleoatmosphere KW - oxidation KW - cosmochemistry KW - Kimberley Formation KW - X-ray spectra KW - aquifers KW - terrestrial planets KW - planets KW - paleoenvironment KW - extraterrestrial geology KW - metals KW - Mars Science Laboratory KW - terrestrial comparison KW - trace metals KW - Dillinger Member KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859792271?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Oxidation+of+manganese+in+an+ancient+aquifer%2C+Kimberley+Formation%2C+Gale+Crater%2C+Mars&rft.au=Lanza%2C+Nina+L%3BWiens%2C+Roger+C%3BArvidson%2C+Raymond+E%3BClark%2C+Benton+C%3BFischer%2C+Woodward+W%3BGellert%2C+Ralf%3BGrotzinger%2C+John+P%3BHurowitz%2C+Joel+A%3BMcLennan%2C+Scott+M%3BMorris%2C+Richard+V%3BRice%2C+Melissa+S%3BBell%2C+James+F%2C+III%3BBerger%2C+Jeffrey+A%3BBlaney%2C+Diana+L%3BBridges%2C+Nathan+T%3BCalef%2C+Fred%2C+III%3BCampbell%2C+John+L%3BClegg%2C+Samuel+M%3BCousin%2C+Agnes%3BEdgett%2C+Kenneth+S%3BFabre%2C+Cecile%3BFisk%2C+Martin+R%3BForni%2C+Olivier%3BFrydenvang%2C+Jens%3BHardy%2C+Keian+R%3BHardgrove%2C+Craig%3BJohnson%2C+Jeffrey+R%3BLasue%2C+Jeremie%3BLe+Mouelic%2C+Stephane%3BMalin%2C+Michael+C%3BMangold%2C+Nicolas%3BMartin-Torres%2C+Javier%3BMaurice%2C+Sylvestre%3BMcBride%2C+Marie+J%3BMing%2C+Douglas+W%3BNewsom%2C+Horton+E%3BOllila%2C+Ann+M%3BSautter%2C+Violaine%3BSchroeder%2C+Susanne%3BThompson%2C+Lucy+M%3BTreiman%2C+Allan+H%3BVanBommel%2C+Scott%3BVaniman%2C+David+T%3BZorzano%2C+Maria-Paz&rft.aulast=Lanza&rft.aufirst=Nina&rft.date=2016-07-28&rft.volume=43&rft.issue=14&rft.spage=7398&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2016GL069109 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2017-01-01 N1 - Number of references - 50 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2017-01-19 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - alpha particles; aquifers; ChemCam; chemical composition; concentration; cosmochemistry; Curiosity Rover; Dillinger Member; Earth; enrichment; extraterrestrial geology; fractured materials; Gale Crater; geochemistry; ground water; interplanetary comparison; Kimberley Formation; major elements; manganese; manganese oxides; Mars; Mars Science Laboratory; metals; Mount Remarkable Member; oxidation; oxides; oxygen; paleoatmosphere; paleoenvironment; planets; spectra; terrestrial comparison; terrestrial planets; trace metals; X-ray spectra DO - http://dx.doi.org/10.1002/2016GL069109 ER - TY - JOUR T1 - Widespread effusive volcanism on Mercury likely ended by about 3.5 Ga AN - 1859791949; 2017-004563 AB - Crater size-frequency analyses have shown that the largest volcanic plains deposits on Mercury were emplaced around 3.7 Ga, as determined with recent model production function chronologies for impact crater formation on that planet. To test the hypothesis that all major smooth plains on Mercury were emplaced by about that time, we determined crater size-frequency distributions for the nine next-largest deposits, which we interpret also as volcanic. Our crater density measurements are consistent with those of the largest areas of smooth plains on the planet. Model ages based on recent crater production rate estimates for Mercury imply that the main phase of plains volcanism on Mercury had ended by approximately 3.5 Ga, with only small-scale volcanism enduring beyond that time. Cessation of widespread effusive volcanism is attributable to interior cooling and contraction of the innermost planet. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Byrne, Paul K AU - Ostrach, Lillian R AU - Fassett, Caleb I AU - Chapman, Clark R AU - Denevi, Brett W AU - Evans, Alexander J AU - Klimczak, Christian AU - Banks, Maria E AU - Head, James W AU - Solomon, Sean C Y1 - 2016/07/28/ PY - 2016 DA - 2016 Jul 28 SP - 7408 EP - 7416 PB - American Geophysical Union, Washington, DC VL - 43 IS - 14 SN - 0094-8276, 0094-8276 KW - cratering KW - impact features KW - resurfacing KW - effusion KW - data processing KW - mapping KW - statistical distribution KW - spatial distribution KW - size distribution KW - volcanic features KW - geographic information systems KW - mosaics KW - volcanism KW - Mercury Planet KW - surface features KW - cooling KW - absolute age KW - dimensions KW - Archean KW - functions KW - Precambrian KW - cosmochronology KW - isochrons KW - terrestrial planets KW - models KW - computer programs KW - planets KW - contraction KW - extraterrestrial geology KW - planetary interiors KW - information systems KW - impact craters KW - MESSENGER Mission KW - image analysis KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859791949?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Widespread+effusive+volcanism+on+Mercury+likely+ended+by+about+3.5+Ga&rft.au=Byrne%2C+Paul+K%3BOstrach%2C+Lillian+R%3BFassett%2C+Caleb+I%3BChapman%2C+Clark+R%3BDenevi%2C+Brett+W%3BEvans%2C+Alexander+J%3BKlimczak%2C+Christian%3BBanks%2C+Maria+E%3BHead%2C+James+W%3BSolomon%2C+Sean+C&rft.aulast=Byrne&rft.aufirst=Paul&rft.date=2016-07-28&rft.volume=43&rft.issue=14&rft.spage=7408&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2016GL069412 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2017-01-01 N1 - Number of references - 61 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2017-01-19 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - absolute age; Archean; computer programs; contraction; cooling; cosmochronology; cratering; data processing; dimensions; effusion; extraterrestrial geology; functions; geographic information systems; image analysis; impact craters; impact features; information systems; isochrons; mapping; Mercury Planet; MESSENGER Mission; models; mosaics; planetary interiors; planets; Precambrian; resurfacing; size distribution; spatial distribution; statistical distribution; surface features; terrestrial planets; volcanic features; volcanism DO - http://dx.doi.org/10.1002/2016GL069412 ER - TY - JOUR T1 - Timelapse: A Year on Earth Seen from 1 Million Miles Away AN - 1807246511 JF - Product Design & Development AU - Goddard, NASA Y1 - 2016/07/26/ PY - 2016 DA - 2016 Jul 26 CY - Highlands Ranch PB - Advantage Business Media KW - Engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1807246511?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acomputing&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=Product+Design+%26+Development&rft.atitle=Timelapse%3A+A+Year+on+Earth+Seen+from+1+Million+Miles+Away&rft.au=Goddard%2C+NASA&rft.aulast=Goddard&rft.aufirst=NASA&rft.date=2016-07-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Product+Design+%26+Development&rft.issn=&rft_id=info:doi/ LA - English DB - Entrepreneurship Database; ProQuest Central N1 - Copyright - Copyright Advantage Business Media Jul 26, 2016 N1 - Last updated - 2016-07-30 N1 - CODEN - PRDDA4 ER - TY - JOUR T1 - An exceptional grouping of lunar highland smooth plains; geography, morphology, and possible origins AN - 1803780470; 2016-060448 JF - Icarus AU - Robinson, Mark S AU - Thomas, P C AU - Plescia, J B AU - Denevi, Brett W AU - Burns, K N AU - Bowman-Cisneros, Ernest AU - Henriksen, M R AU - van der Bogert, Carolyn H AU - Hiesinger, H AU - Mahanti, Prasun AU - Stelling, Richard W AU - Povilaitis, Reinhold Z Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 121 EP - 134 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - volcanic rocks KW - impact features KW - Lunar Reconnaissance Orbiter KW - igneous rocks KW - Lunar Reconnaissance Orbiter Camera KW - effusion KW - lunar highlands KW - melts KW - impact melts KW - topography KW - farside KW - crater counts KW - volcanism KW - age KW - plains KW - Copernican KW - Moon KW - ejecta KW - distribution KW - morphology KW - pyroclastics KW - color KW - depressions KW - impact craters KW - reflectance KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803780470?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+exceptional+grouping+of+lunar+highland+smooth+plains%3B+geography%2C+morphology%2C+and+possible+origins&rft.au=Robinson%2C+Mark+S%3BThomas%2C+P+C%3BPlescia%2C+J+B%3BDenevi%2C+Brett+W%3BBurns%2C+K+N%3BBowman-Cisneros%2C+Ernest%3BHenriksen%2C+M+R%3Bvan+der+Bogert%2C+Carolyn+H%3BHiesinger%2C+H%3BMahanti%2C+Prasun%3BStelling%2C+Richard+W%3BPovilaitis%2C+Reinhold+Z&rft.aulast=Marchi&rft.aufirst=Simone&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 56 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables, sketch maps N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - age; color; Copernican; crater counts; depressions; distribution; effusion; ejecta; farside; igneous rocks; impact craters; impact features; impact melts; lunar highlands; Lunar Reconnaissance Orbiter; Lunar Reconnaissance Orbiter Camera; melts; Moon; morphology; plains; pyroclastics; reflectance; regolith; topography; volcanic rocks; volcanism DO - http://dx.doi.org/10.1016/j.icarus.2015.06.028 ER - TY - JOUR T1 - The lunar Gruithuisen silicic extrusive domes; topographic configuration, morphology, ages, and internal structure AN - 1803780353; 2016-060459 JF - Icarus AU - Ivanov, Mikhail A AU - Head, James W AU - Bystrov, A Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 262 EP - 283 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - albedo KW - impact features KW - Lunar Reconnaissance Orbiter KW - Lunar Reconnaissance Orbiter Camera KW - lunar highlands KW - topography KW - volcanism KW - Iridum Crater KW - age KW - acidic composition KW - Moon KW - Oceanus Procellarum KW - Gruithuisen Domes KW - maria KW - size KW - morphology KW - lava domes KW - Mare Imbrium KW - viscosity KW - volume KW - volcanoes KW - LOLA KW - impact craters KW - Kaguya Mission KW - fractional crystallization KW - Diviner Lunar Radiometer Experiment KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803780353?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+lunar+Gruithuisen+silicic+extrusive+domes%3B+topographic+configuration%2C+morphology%2C+ages%2C+and+internal+structure&rft.au=Ivanov%2C+Mikhail+A%3BHead%2C+James+W%3BBystrov%2C+A&rft.aulast=Ivanov&rft.aufirst=Mikhail&rft.date=2016-07-15&rft.volume=273&rft.issue=&rft.spage=262&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.12.015 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 71 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table, geol. sketch maps N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - acidic composition; age; albedo; Diviner Lunar Radiometer Experiment; fractional crystallization; Gruithuisen Domes; impact craters; impact features; Iridum Crater; Kaguya Mission; lava domes; LOLA; lunar highlands; Lunar Reconnaissance Orbiter; Lunar Reconnaissance Orbiter Camera; Mare Imbrium; maria; Moon; morphology; Oceanus Procellarum; size; topography; viscosity; volcanism; volcanoes; volume DO - http://dx.doi.org/10.1016/j.icarus.2015.12.015 ER - TY - JOUR T1 - Photometric characterization of the Chang'e 3 landing site using LROC NAC images AN - 1803780297; 2016-060445 JF - Icarus AU - Clegg-Watkins, R N AU - Jolliff, B L AU - Boyd, Aaron K AU - Robinson, Mark S AU - Wagner, R AU - Stopar, J D AU - Plescia, J B AU - Speyerer, E J Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 84 EP - 95 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - soils KW - imagery KW - maturity KW - Moon KW - Lunar Reconnaissance Orbiter Camera KW - Luna Program KW - data processing KW - Apollo Program KW - landing sites KW - weathering KW - space weathering KW - physical properties KW - photometry KW - Mare Imbrium KW - Surveyor Program KW - reflectance KW - Chang'E-3 Mission KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803780297?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Photometric+characterization+of+the+Chang%27e+3+landing+site+using+LROC+NAC+images&rft.au=Clegg-Watkins%2C+R+N%3BJolliff%2C+B+L%3BBoyd%2C+Aaron+K%3BRobinson%2C+Mark+S%3BWagner%2C+R%3BStopar%2C+J+D%3BPlescia%2C+J+B%3BSpeyerer%2C+E+J&rft.aulast=Clegg-Watkins&rft.aufirst=R&rft.date=2016-07-15&rft.volume=273&rft.issue=&rft.spage=84&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.12.010 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 78 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2016-11-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - Apollo Program; Chang'E-3 Mission; data processing; imagery; landing sites; Luna Program; Lunar Reconnaissance Orbiter Camera; Mare Imbrium; maturity; Moon; photometry; physical properties; reflectance; regolith; soils; space weathering; Surveyor Program; weathering DO - http://dx.doi.org/10.1016/j.icarus.2015.12.010 ER - TY - JOUR T1 - Gravitational search for cryptovolcanism on the Moon; evidence for large volumes of early igneous activity AN - 1803780296; 2016-060460 JF - Icarus AU - Sori, Michael M AU - Zuber, Maria T AU - Head, James W AU - Kiefer, Walter S Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 284 EP - 295 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - magnesium KW - volcanic rocks KW - density KW - Lunar Reconnaissance Orbiter KW - Mare Australe KW - igneous rocks KW - mapping KW - thermal history KW - Lomonosov-Fleming Basin KW - isostasy KW - gravity anomalies KW - volcanism KW - basalts KW - thickness KW - alkaline earth metals KW - Moon KW - GRAIL Mission KW - metals KW - volume KW - Grail Recovery and Interior Laboratory Mission KW - LOLA KW - Bouguer anomalies KW - mare basalts KW - cryptomaria KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803780296?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Gravitational+search+for+cryptovolcanism+on+the+Moon%3B+evidence+for+large+volumes+of+early+igneous+activity&rft.au=Sori%2C+Michael+M%3BZuber%2C+Maria+T%3BHead%2C+James+W%3BKiefer%2C+Walter+S&rft.aulast=Sori&rft.aufirst=Michael&rft.date=2016-07-15&rft.volume=273&rft.issue=&rft.spage=284&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.02.009 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 122 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table, sketch maps N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - alkaline earth metals; basalts; Bouguer anomalies; cryptomaria; density; GRAIL Mission; Grail Recovery and Interior Laboratory Mission; gravity anomalies; igneous rocks; isostasy; LOLA; Lomonosov-Fleming Basin; Lunar Reconnaissance Orbiter; magnesium; mapping; Mare Australe; mare basalts; metals; Moon; thermal history; thickness; volcanic rocks; volcanism; volume DO - http://dx.doi.org/10.1016/j.icarus.2016.02.009 ER - TY - JOUR T1 - The Lunar Reconnaissance Orbiter Mission AN - 1803780289; 2016-060439 JF - Icarus Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 356 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - cratering KW - volatiles KW - topography KW - Moon KW - Lunar Reconnaissance Orbiter KW - volcanism KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803780289?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+Lunar+Reconnaissance+Orbiter+Mission&rft.au=&rft.aulast=&rft.aufirst=&rft.date=2016-07-15&rft.volume=273&rft.issue=&rft.spage=&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 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - PubXState - NY N1 - Document feature - illus. N1 - SuppNotes - Individual papers within scope are cited separately N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - cratering; Lunar Reconnaissance Orbiter; Moon; regolith; topography; volatiles; volcanism ER - TY - JOUR T1 - A new study of crater concentric ridges on the Moon AN - 1803780233; 2016-060453 JF - Icarus AU - Atwood-Stone, Corwin AU - Bray, Veronica J AU - McEwen, Alfred S Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 196 EP - 204 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - cratering KW - impact features KW - Moon KW - Lunar Reconnaissance Orbiter Camera KW - mapping KW - impacts KW - ejecta KW - distribution KW - concentric ridges KW - lunar craters KW - terrestrial planets KW - morphology KW - planets KW - topography KW - craters KW - mosaics KW - Mercury Planet KW - surface features KW - impact craters KW - ejecta blankets KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803780233?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+study+of+crater+concentric+ridges+on+the+Moon&rft.au=Atwood-Stone%2C+Corwin%3BBray%2C+Veronica+J%3BMcEwen%2C+Alfred+S&rft.aulast=Atwood-Stone&rft.aufirst=Corwin&rft.date=2016-07-15&rft.volume=273&rft.issue=&rft.spage=196&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.03.012 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 18 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table, sketch maps N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - concentric ridges; cratering; craters; distribution; ejecta; ejecta blankets; impact craters; impact features; impacts; lunar craters; Lunar Reconnaissance Orbiter Camera; mapping; Mercury Planet; Moon; morphology; mosaics; planets; surface features; terrestrial planets; topography DO - http://dx.doi.org/10.1016/j.icarus.2016.03.012 ER - TY - JOUR T1 - The distribution and extent of lunar swirls AN - 1803780220; 2016-060442 JF - Icarus AU - Denevi, Brett W AU - Robinson, Mark S AU - Boyd, Aaron K AU - Blewett, David T AU - Klima, Rachel L Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 53 EP - 67 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - lunar swirls KW - albedo KW - imagery KW - optical spectra KW - Lunar Reconnaissance Orbiter Camera KW - solar wind KW - lunar craters KW - iron KW - mosaics KW - surface features KW - ultraviolet spectra KW - spectra KW - color imagery KW - Copernican KW - agglutinates KW - optical maturity KW - King Crater KW - Moon KW - magnetic anomalies KW - distribution KW - South Pole-Aitken Basin KW - Eratosthenian KW - metals KW - Mare Marginis KW - reflectance KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803780220?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Lunar+field+geological+interpretations+assisted+by+LROC%2C+mini-RF+and+M3%3B+Taurus-Littrow&rft.au=Schmitt%2C+Harrison+H%3BPetro%2C+Noah+E%3BRobinson%2C+Mark+Southwick%3BWells%2C+Ronald%3BWeiss%2C+Benjamin+P%3BMercer%2C+Cameron+Mark%3BAnonymous&rft.aulast=Schmitt&rft.aufirst=Harrison&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 68 N1 - PubXState - NY N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - agglutinates; albedo; color imagery; Copernican; distribution; Eratosthenian; imagery; iron; King Crater; lunar craters; Lunar Reconnaissance Orbiter Camera; lunar swirls; magnetic anomalies; Mare Marginis; metals; Moon; mosaics; optical maturity; optical spectra; reflectance; regolith; solar wind; South Pole-Aitken Basin; spectra; surface features; ultraviolet spectra DO - http://dx.doi.org/10.1016/j.icarus.2016.01.017 ER - TY - JOUR T1 - The distribution and origin of lunar light plains around Orientale Basin AN - 1803780203; 2016-060449 JF - Icarus AU - Meyer, Heather M AU - Denevi, Brett W AU - Boyd, Aaron K AU - Robinson, Mark S Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 135 EP - 145 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - relative age KW - impact features KW - Moon KW - Mare Orientale KW - Lunar Reconnaissance Orbiter Camera KW - mapping KW - lunar highlands KW - impacts KW - ejecta KW - distribution KW - composition KW - basins KW - plains KW - impact craters KW - fluidization KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803780203?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+distribution+and+origin+of+lunar+light+plains+around+Orientale+Basin&rft.au=Meyer%2C+Heather+M%3BDenevi%2C+Brett+W%3BBoyd%2C+Aaron+K%3BRobinson%2C+Mark+S&rft.aulast=Meyer&rft.aufirst=Heather&rft.date=2016-07-15&rft.volume=273&rft.issue=&rft.spage=135&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.02.014 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 56 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables, sketch maps N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - basins; composition; distribution; ejecta; fluidization; impact craters; impact features; impacts; lunar highlands; Lunar Reconnaissance Orbiter Camera; mapping; Mare Orientale; Moon; plains; relative age DO - http://dx.doi.org/10.1016/j.icarus.2016.02.014 ER - TY - JOUR T1 - Crater size-frequency distribution measurements and age of the Compton-Belkovich volcanic complex AN - 1803780200; 2016-060455 JF - Icarus AU - Shirley, Katherine A AU - Zanetti, Mike AU - Jolliff, B L AU - van der Bogert, Carolyn H AU - Hiesinger, H Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 214 EP - 223 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - cratering KW - albedo KW - impact features KW - Lunar Reconnaissance Orbiter Camera KW - resurfacing KW - Belkovich Crater KW - topography KW - farside KW - chronology KW - volcanism KW - silica KW - age KW - acidic composition KW - Moon KW - Compton Crater KW - size KW - morphology KW - physical properties KW - Hayn Crater KW - craters KW - metals KW - thorium KW - impact craters KW - actinides KW - Compton-Belkovich volcanic complex KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803780200?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+size-frequency+distribution+measurements+and+age+of+the+Compton-Belkovich+volcanic+complex&rft.au=Shirley%2C+Katherine+A%3BZanetti%2C+Mike%3BJolliff%2C+B+L%3Bvan+der+Bogert%2C+Carolyn+H%3BHiesinger%2C+H&rft.aulast=Shirley&rft.aufirst=Katherine&rft.date=2016-07-15&rft.volume=273&rft.issue=&rft.spage=214&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.03.015 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 41 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table, sketch maps N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - acidic composition; actinides; age; albedo; Belkovich Crater; chronology; Compton Crater; Compton-Belkovich volcanic complex; cratering; craters; farside; Hayn Crater; impact craters; impact features; Lunar Reconnaissance Orbiter Camera; metals; Moon; morphology; physical properties; resurfacing; silica; size; thorium; topography; volcanism DO - http://dx.doi.org/10.1016/j.icarus.2016.03.015 ER - TY - JOUR T1 - Lunar crater ejecta; physical properties revealed by radar and thermal infrared observations AN - 1803780141; 2016-060452 JF - Icarus AU - Ghent, Rebecca R AU - Carter, Lynn M AU - Bandfield, Joshua L AU - Udovicic, C J Tai AU - Campbell, Bruce A Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 182 EP - 195 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - Earth-based observations KW - Moon KW - Lunar Reconnaissance Orbiter KW - thermal infrared spectra KW - radar methods KW - Mini-RF KW - ejecta KW - melts KW - lunar craters KW - size KW - infrared spectra KW - impact melts KW - physical properties KW - thermomechanical properties KW - temporal distribution KW - spectra KW - Diviner Lunar Radiometer Experiment KW - rocks KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803780141?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+crater+ejecta%3B+physical+properties+revealed+by+radar+and+thermal+infrared+observations&rft.au=Ghent%2C+Rebecca+R%3BCarter%2C+Lynn+M%3BBandfield%2C+Joshua+L%3BUdovicic%2C+C+J+Tai%3BCampbell%2C+Bruce+A&rft.aulast=Ghent&rft.aufirst=Rebecca&rft.date=2016-07-15&rft.volume=273&rft.issue=&rft.spage=182&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.12.014 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 53 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - Diviner Lunar Radiometer Experiment; Earth-based observations; ejecta; impact melts; infrared spectra; lunar craters; Lunar Reconnaissance Orbiter; melts; Mini-RF; Moon; physical properties; radar methods; regolith; rocks; size; spectra; temporal distribution; thermal infrared spectra; thermomechanical properties DO - http://dx.doi.org/10.1016/j.icarus.2015.12.014 ER - TY - JOUR T1 - The Lunar Reconnaissance Orbiter Mission; six years of science and exploration at the Moon AN - 1803780117; 2016-060440 JF - Icarus AU - Keller, John W AU - Petro, Noah E AU - Vondrak, R R Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 2 EP - 24 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - lunar swirls KW - Lunar Reconnaissance Orbiter KW - Lunar Reconnaissance Orbiter Camera KW - Mini-RF KW - mapping KW - Cosmic Ray Telescope for the Effects of Radiation KW - volcanic features KW - volcanism KW - background radiation KW - spacecraft KW - acidic composition KW - basaltic composition KW - heat flux KW - CRaTER instrument KW - Moon KW - global KW - Miniature-Frequency Technology Demonstration KW - Lunar Exploration Neutron Detector KW - tides KW - volatiles KW - planetary interiors KW - Lyman Alpha Mapping Project KW - LOLA KW - thermomechanical properties KW - Diviner Lunar Radiometer Experiment KW - regolith KW - instruments KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803780117?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+Lunar+Reconnaissance+Orbiter+Mission%3B+six+years+of+science+and+exploration+at+the+Moon&rft.au=Keller%2C+John+W%3BPetro%2C+Noah+E%3BVondrak%2C+R+R&rft.aulast=Keller&rft.aufirst=John&rft.date=2016-07-15&rft.volume=273&rft.issue=&rft.spage=2&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.11.024 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 161 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table, sketch maps N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - acidic composition; background radiation; basaltic composition; Cosmic Ray Telescope for the Effects of Radiation; CRaTER instrument; Diviner Lunar Radiometer Experiment; global; heat flux; instruments; LOLA; Lunar Exploration Neutron Detector; Lunar Reconnaissance Orbiter; Lunar Reconnaissance Orbiter Camera; lunar swirls; Lyman Alpha Mapping Project; mapping; Mini-RF; Miniature-Frequency Technology Demonstration; Moon; planetary interiors; regolith; remote sensing; spacecraft; thermomechanical properties; tides; volatiles; volcanic features; volcanism DO - http://dx.doi.org/10.1016/j.icarus.2015.11.024 ER - TY - JOUR T1 - Improved calibration of reflectance data from the LRO Lunar Orbiter Laser Altimeter (LOLA) and implications for space weathering AN - 1803780101; 2016-060462 JF - Icarus AU - Lemelin, Myriam AU - Lucey, P G AU - Neumann, G A AU - Mazarico, E M AU - Barker, Michael K AU - Kakazu, A AU - Trang, D AU - Smith, D E AU - Zuber, Maria T Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 315 EP - 328 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - albedo KW - imagery KW - Lunar Reconnaissance Orbiter KW - solar wind KW - Lunar Prospector Program KW - calibration KW - lunar highlands KW - iron KW - infrared spectra KW - photometry KW - errors KW - mixing KW - spectra KW - radiative transfer KW - lunar soils KW - soils KW - Moon KW - maria KW - weathering KW - models KW - space weathering KW - metals KW - LOLA KW - latitude KW - corrections KW - reflectance KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803780101?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Improved+calibration+of+reflectance+data+from+the+LRO+Lunar+Orbiter+Laser+Altimeter+%28LOLA%29+and+implications+for+space+weathering&rft.au=Lemelin%2C+Myriam%3BLucey%2C+P+G%3BNeumann%2C+G+A%3BMazarico%2C+E+M%3BBarker%2C+Michael+K%3BKakazu%2C+A%3BTrang%2C+D%3BSmith%2C+D+E%3BZuber%2C+Maria+T&rft.aulast=Lemelin&rft.aufirst=Myriam&rft.date=2016-07-15&rft.volume=273&rft.issue=&rft.spage=315&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.02.006 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 27 N1 - PubXState - NY N1 - Document feature - illus. incl. 5 tables, sketch maps N1 - Last updated - 2016-11-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - albedo; calibration; corrections; errors; imagery; infrared spectra; iron; latitude; LOLA; lunar highlands; Lunar Prospector Program; Lunar Reconnaissance Orbiter; lunar soils; maria; metals; mixing; models; Moon; photometry; radiative transfer; reflectance; soils; solar wind; space weathering; spectra; weathering DO - http://dx.doi.org/10.1016/j.icarus.2016.02.006 ER - TY - JOUR T1 - The steepest slopes on the Moon from Lunar Orbiter Laser Altimeter (LOLA) data; spatial distribution and correlation with geologic features AN - 1803780018; 2016-060463 JF - Icarus AU - Kreslavsky, Mikhail A AU - Head, James W Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 329 EP - 336 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - fractured materials KW - cratering KW - shear strength KW - impact features KW - Moon KW - strength KW - slopes KW - Mare Orientale KW - correlation KW - lunar highlands KW - impacts KW - lunar craters KW - spatial distribution KW - South Pole-Aitken Basin KW - topography KW - farside KW - basins KW - LOLA KW - impact craters KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803780018?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+steepest+slopes+on+the+Moon+from+Lunar+Orbiter+Laser+Altimeter+%28LOLA%29+data%3B+spatial+distribution+and+correlation+with+geologic+features&rft.au=Kreslavsky%2C+Mikhail+A%3BHead%2C+James+W&rft.aulast=Kreslavsky&rft.aufirst=Mikhail&rft.date=2016-07-15&rft.volume=273&rft.issue=&rft.spage=329&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.02.036 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 45 N1 - PubXState - NY N1 - Document feature - illus. N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - basins; correlation; cratering; farside; fractured materials; impact craters; impact features; impacts; LOLA; lunar craters; lunar highlands; Mare Orientale; Moon; regolith; shear strength; slopes; South Pole-Aitken Basin; spatial distribution; strength; topography DO - http://dx.doi.org/10.1016/j.icarus.2016.02.036 ER - TY - JOUR T1 - Origin of the anomalously rocky appearance of Tsiolkovskiy Crater AN - 1803780009; 2016-060457 JF - Icarus AU - Greenhagen, Benjamin T AU - Neish, Catherine D AU - Williams, Jean-Pierre AU - Cahill, Joshua T S AU - Ghent, Rebecca R AU - Hayne, Paul O AU - Lawrence, Samuel J AU - Petro, Noah E AU - Bandfield, Joshua L Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 237 EP - 247 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - cratering KW - polarization KW - imagery KW - Tsiolkovskiy Crater KW - degradation KW - impact features KW - Lunar Reconnaissance Orbiter KW - Lunar Reconnaissance Orbiter Camera KW - Miniature Radio Frequency instrument KW - melts KW - lunar craters KW - impact melts KW - age KW - rocks KW - Copernican KW - Moon KW - anomalies KW - impacts KW - distribution KW - size KW - craters KW - Mini-RF instrument KW - impact craters KW - Diviner Lunar Radiometer Experiment KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803780009?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Origin+of+the+anomalously+rocky+appearance+of+Tsiolkovskiy+Crater&rft.au=Greenhagen%2C+Benjamin+T%3BNeish%2C+Catherine+D%3BWilliams%2C+Jean-Pierre%3BCahill%2C+Joshua+T+S%3BGhent%2C+Rebecca+R%3BHayne%2C+Paul+O%3BLawrence%2C+Samuel+J%3BPetro%2C+Noah+E%3BBandfield%2C+Joshua+L&rft.aulast=Greenhagen&rft.aufirst=Benjamin&rft.date=2016-07-15&rft.volume=273&rft.issue=&rft.spage=237&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.02.041 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 41 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables, sketch maps N1 - Last updated - 2016-11-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - age; anomalies; Copernican; cratering; craters; degradation; distribution; Diviner Lunar Radiometer Experiment; imagery; impact craters; impact features; impact melts; impacts; lunar craters; Lunar Reconnaissance Orbiter; Lunar Reconnaissance Orbiter Camera; melts; Mini-RF instrument; Miniature Radio Frequency instrument; Moon; polarization; regolith; rocks; size; Tsiolkovskiy Crater DO - http://dx.doi.org/10.1016/j.icarus.2016.02.041 ER - TY - JOUR T1 - LRO-LAMP detection of geologically young craters within lunar permanently shaded regions AN - 1803779972; 2016-060447 JF - Icarus AU - Mandt, Kathleen E AU - Greathouse, Thomas K AU - Retherford, Kurt D AU - Gladstone, G Randall AU - Jordan, Andrew P AU - Lemelin, Myriam AU - Koeber, Steven D AU - Bowman-Cisneros, Ernest AU - Patterson, G Wesley AU - Robinson, Mark S AU - Lucey, Paul G AU - Hendrix, Amanda R AU - Hurley, Dana AU - Stickle, Angela M AU - Pryor, Wayne Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 114 EP - 120 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - LAMP instrument KW - albedo KW - relative age KW - polar regions KW - impact features KW - Moon KW - Lunar Reconnaissance Orbiter KW - far ultraviolet radiation KW - roughness KW - radar methods KW - ejecta KW - porosity KW - brightness KW - topography KW - detection KW - permanently shadowed regions KW - ultraviolet spectra KW - Lyman Alpha Mapping Project KW - impact craters KW - spectra KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803779972?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=LRO-LAMP+detection+of+geologically+young+craters+within+lunar+permanently+shaded+regions&rft.au=Mandt%2C+Kathleen+E%3BGreathouse%2C+Thomas+K%3BRetherford%2C+Kurt+D%3BGladstone%2C+G+Randall%3BJordan%2C+Andrew+P%3BLemelin%2C+Myriam%3BKoeber%2C+Steven+D%3BBowman-Cisneros%2C+Ernest%3BPatterson%2C+G+Wesley%3BRobinson%2C+Mark+S%3BLucey%2C+Paul+G%3BHendrix%2C+Amanda+R%3BHurley%2C+Dana%3BStickle%2C+Angela+M%3BPryor%2C+Wayne&rft.aulast=Mandt&rft.aufirst=Kathleen&rft.date=2016-07-15&rft.volume=273&rft.issue=&rft.spage=114&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.07.031 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 36 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2016-11-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - albedo; brightness; detection; ejecta; far ultraviolet radiation; impact craters; impact features; LAMP instrument; Lunar Reconnaissance Orbiter; Lyman Alpha Mapping Project; Moon; permanently shadowed regions; polar regions; porosity; radar methods; regolith; relative age; roughness; spectra; topography; ultraviolet spectra DO - http://dx.doi.org/10.1016/j.icarus.2015.07.031 ER - TY - JOUR T1 - Geomorphologic mapping of the lunar crater Tycho and its impact melt deposits AN - 1803779962; 2016-060451 JF - Icarus AU - Krueger, Tim AU - van der Bogert, Carolyn H AU - Hiesinger, H Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 164 EP - 181 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - cratering KW - high-resolution methods KW - Moon KW - Lunar Reconnaissance Orbiter Camera KW - mapping KW - impacts KW - ejecta KW - distribution KW - melts KW - lunar craters KW - impact melts KW - topography KW - oblique orientation KW - Tycho Crater KW - Kaguya Mission KW - geomorphology KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803779962?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Geomorphologic+mapping+of+the+lunar+crater+Tycho+and+its+impact+melt+deposits&rft.au=Krueger%2C+Tim%3Bvan+der+Bogert%2C+Carolyn+H%3BHiesinger%2C+H&rft.aulast=Krueger&rft.aufirst=Tim&rft.date=2016-07-15&rft.volume=273&rft.issue=&rft.spage=164&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.02.018 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 74 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables, sketch maps N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - cratering; distribution; ejecta; geomorphology; high-resolution methods; impact melts; impacts; Kaguya Mission; lunar craters; Lunar Reconnaissance Orbiter Camera; mapping; melts; Moon; oblique orientation; topography; Tycho Crater DO - http://dx.doi.org/10.1016/j.icarus.2016.02.018 ER - TY - JOUR T1 - Mini-RF and LROC observations of mare crater layering relationships AN - 1803779933; 2016-060456 JF - Icarus AU - Stickle, Angela M AU - Patterson, G W AU - Cahill, Joshua T S AU - Bussey, D B J Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 224 EP - 236 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - relative age KW - polarization KW - degradation KW - lava flows KW - Moon KW - Lunar Reconnaissance Orbiter KW - radar methods KW - impacts KW - Miniature Radio Frequency instrument KW - maria KW - excavations KW - ejecta KW - lunar craters KW - layered materials KW - size KW - craters KW - volume KW - Mini-RF instrument KW - thickness KW - ejecta blankets KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803779933?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Mini-RF+and+LROC+observations+of+mare+crater+layering+relationships&rft.au=Stickle%2C+Angela+M%3BPatterson%2C+G+W%3BCahill%2C+Joshua+T+S%3BBussey%2C+D+B+J&rft.aulast=Stickle&rft.aufirst=Angela&rft.date=2016-07-15&rft.volume=273&rft.issue=&rft.spage=224&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.03.014 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 67 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables, sketch maps N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - craters; degradation; ejecta; ejecta blankets; excavations; impacts; lava flows; layered materials; lunar craters; Lunar Reconnaissance Orbiter; maria; Mini-RF instrument; Miniature Radio Frequency instrument; Moon; polarization; radar methods; relative age; size; thickness; volume DO - http://dx.doi.org/10.1016/j.icarus.2016.03.014 ER - TY - JOUR T1 - Signatures of volatiles in the lunar proton albedo AN - 1803779918; 2016-060441 JF - Icarus AU - Schwadron, N A AU - Wilson, J K AU - Looper, M D AU - Jordan, Andrew P AU - Spence, H E AU - Blake, J B AU - Case, A W AU - Iwata, Y AU - Kasper, J C AU - Farrell, W M AU - Lawrence, D J AU - Livadiotis, G AU - Mazur, J AU - Petro, Noah E AU - Pieters, C AU - Robinson, Mark S AU - Smith, S AU - Townsend, L W AU - Zeitlin, C Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 25 EP - 35 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - albedo KW - polar regions KW - CRaTER instrument KW - Moon KW - Lunar Reconnaissance Orbiter KW - protons KW - lunar highlands KW - hydration KW - Cosmic Ray Telescope for the Effects of Radiation KW - volatiles KW - neutrons KW - ice KW - hydrogen KW - cosmic rays KW - latitude KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803779918?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Signatures+of+volatiles+in+the+lunar+proton+albedo&rft.au=Schwadron%2C+N+A%3BWilson%2C+J+K%3BLooper%2C+M+D%3BJordan%2C+Andrew+P%3BSpence%2C+H+E%3BBlake%2C+J+B%3BCase%2C+A+W%3BIwata%2C+Y%3BKasper%2C+J+C%3BFarrell%2C+W+M%3BLawrence%2C+D+J%3BLivadiotis%2C+G%3BMazur%2C+J%3BPetro%2C+Noah+E%3BPieters%2C+C%3BRobinson%2C+Mark+S%3BSmith%2C+S%3BTownsend%2C+L+W%3BZeitlin%2C+C&rft.aulast=Schwadron&rft.aufirst=N&rft.date=2016-07-15&rft.volume=273&rft.issue=&rft.spage=25&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.12.003 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 43 N1 - PubXState - NY N1 - Document feature - illus. N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - albedo; Cosmic Ray Telescope for the Effects of Radiation; cosmic rays; CRaTER instrument; hydration; hydrogen; ice; latitude; lunar highlands; Lunar Reconnaissance Orbiter; Moon; neutrons; polar regions; protons; regolith; volatiles DO - http://dx.doi.org/10.1016/j.icarus.2015.12.003 ER - TY - JOUR T1 - Complex explosive volcanic activity on the Moon within Oppenheimer Crater AN - 1803775934; 2016-060461 JF - Icarus AU - Bennett, Kristen A AU - Horgan, Briony H N AU - Gaddis, Lisa R AU - Greenhagen, Benjamin T AU - Allen, Carlton C AU - Hayne, Paul O AU - Bell, James F, III AU - Paige, David A Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 296 EP - 314 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - silicates KW - near-infrared spectra KW - imagery KW - volcanic rocks KW - igneous rocks KW - Lunar Reconnaissance Orbiter Camera KW - thermal infrared spectra KW - mapping KW - iron-rich composition KW - lunar craters KW - iron KW - explosive eruptions KW - infrared spectra KW - pyroxene group KW - mineral composition KW - clinopyroxene KW - volcanism KW - Moon Mineralogy Mapper KW - composition KW - vulcanian-type eruptions KW - spectra KW - chain silicates KW - Oppenheimer Crater KW - Moon KW - Chandrayaan Mission KW - strombolian-type eruptions KW - South Pole-Aitken Basin KW - pyroclastics KW - metals KW - Clementine Program KW - Diviner Lunar Radiometer Experiment KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803775934?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Complex+explosive+volcanic+activity+on+the+Moon+within+Oppenheimer+Crater&rft.au=Bennett%2C+Kristen+A%3BHorgan%2C+Briony+H+N%3BGaddis%2C+Lisa+R%3BGreenhagen%2C+Benjamin+T%3BAllen%2C+Carlton+C%3BHayne%2C+Paul+O%3BBell%2C+James+F%2C+III%3BPaige%2C+David+A&rft.aulast=Bennett&rft.aufirst=Kristen&rft.date=2016-07-15&rft.volume=273&rft.issue=&rft.spage=296&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.02.007 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 63 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables, sketch maps N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - chain silicates; Chandrayaan Mission; Clementine Program; clinopyroxene; composition; Diviner Lunar Radiometer Experiment; explosive eruptions; igneous rocks; imagery; infrared spectra; iron; iron-rich composition; lunar craters; Lunar Reconnaissance Orbiter Camera; mapping; metals; mineral composition; Moon; Moon Mineralogy Mapper; near-infrared spectra; Oppenheimer Crater; pyroclastics; pyroxene group; silicates; South Pole-Aitken Basin; spectra; strombolian-type eruptions; thermal infrared spectra; volcanic rocks; volcanism; vulcanian-type eruptions DO - http://dx.doi.org/10.1016/j.icarus.2016.02.007 ER - TY - JOUR T1 - The porosity of the upper lunar regolith AN - 1803774935; 2016-060444 JF - Icarus AU - Hapke, Bruce AU - Sato, Hiroyuki Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 75 EP - 83 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - optical maturity KW - Moon KW - Sample 62231 KW - Lunar Reconnaissance Orbiter Camera KW - roughness KW - Apollo Program KW - porosity KW - photometry KW - lunar samples KW - Kaguya Mission KW - reflectance KW - regolith KW - Apollo 16 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803774935?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+porosity+of+the+upper+lunar+regolith&rft.au=Hapke%2C+Bruce%3BSato%2C+Hiroyuki&rft.aulast=Hapke&rft.aufirst=Bruce&rft.date=2016-07-15&rft.volume=273&rft.issue=&rft.spage=75&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.10.031 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 22 N1 - PubXState - NY N1 - Document feature - illus. N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - Apollo 16; Apollo Program; Kaguya Mission; Lunar Reconnaissance Orbiter Camera; lunar samples; Moon; optical maturity; photometry; porosity; reflectance; regolith; roughness; Sample 62231 DO - http://dx.doi.org/10.1016/j.icarus.2015.10.031 ER - TY - JOUR T1 - The formation of peak-ring basins; working hypotheses and path forward in using observations to constrain models of impact-basin formation AN - 1803774894; 2016-060450 JF - Icarus AU - Baker, David M H AU - Head, James W AU - Collins, Gareth S AU - Potter, Ross W K Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 146 EP - 163 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - cratering KW - imagery KW - impact features KW - Lunar Reconnaissance Orbiter KW - uplifts KW - simulation KW - lunar craters KW - gravity methods KW - impact basins KW - basins KW - faults KW - numerical models KW - Moon KW - geophysical methods KW - morphometry KW - altimetry KW - impacts KW - ring structures KW - morphology KW - models KW - transient phenomena KW - complex craters KW - peak-ring basins KW - impact craters KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803774894?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+formation+of+peak-ring+basins%3B+working+hypotheses+and+path+forward+in+using+observations+to+constrain+models+of+impact-basin+formation&rft.au=Baker%2C+David+M+H%3BHead%2C+James+W%3BCollins%2C+Gareth+S%3BPotter%2C+Ross+W+K&rft.aulast=Baker&rft.aufirst=David+M&rft.date=2016-07-15&rft.volume=273&rft.issue=&rft.spage=146&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.11.033 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 115 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - altimetry; basins; complex craters; cratering; faults; geophysical methods; gravity methods; imagery; impact basins; impact craters; impact features; impacts; lunar craters; Lunar Reconnaissance Orbiter; models; Moon; morphology; morphometry; numerical models; peak-ring basins; remote sensing; ring structures; simulation; transient phenomena; uplifts DO - http://dx.doi.org/10.1016/j.icarus.2015.11.033 ER - TY - JOUR T1 - Optimized traverse planning for future polar prospectors based on lunar topography AN - 1803774874; 2016-060464 JF - Icarus AU - Speyerer, E J AU - Lawrence, Samuel J AU - Stopar, J D AU - Glaeser, P AU - Robinson, Mark S AU - Jolliff, B L Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 337 EP - 345 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - resources KW - Lunar Reconnaissance Orbiter KW - Lunar Reconnaissance Orbiter Camera KW - geotraverses KW - data processing KW - landing sites KW - digital terrain models KW - exploration KW - topography KW - future KW - permanently shadowed regions KW - algorithms KW - lunar soils KW - polar regions KW - Moon KW - Shackleton Crater KW - optimization KW - rovers KW - volatiles KW - planning KW - LOLA KW - Diviner Lunar Radiometer Experiment KW - regolith KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803774874?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Optimized+traverse+planning+for+future+polar+prospectors+based+on+lunar+topography&rft.au=Speyerer%2C+E+J%3BLawrence%2C+Samuel+J%3BStopar%2C+J+D%3BGlaeser%2C+P%3BRobinson%2C+Mark+S%3BJolliff%2C+B+L&rft.aulast=Speyerer&rft.aufirst=E&rft.date=2016-07-15&rft.volume=273&rft.issue=&rft.spage=337&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.03.011 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 51 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables, sketch map N1 - Last updated - 2016-11-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - algorithms; data processing; digital terrain models; Diviner Lunar Radiometer Experiment; exploration; future; geotraverses; landing sites; LOLA; Lunar Reconnaissance Orbiter; Lunar Reconnaissance Orbiter Camera; lunar soils; Moon; optimization; permanently shadowed regions; planning; polar regions; regolith; remote sensing; resources; rovers; Shackleton Crater; topography; volatiles DO - http://dx.doi.org/10.1016/j.icarus.2016.03.011 ER - TY - JOUR T1 - The Lassell Massif; a silicic lunar volcano AN - 1803774826; 2016-060458 JF - Icarus AU - Ashley, James W AU - Robinson, Mark S AU - Stopar, J D AU - Glotch, T D AU - Hawke, B Ray AU - van der Bogert, Carolyn H AU - Hiesinger, H AU - Lawrence, Samuel J AU - Jolliff, B L AU - Greenhagen, Benjamin T AU - Giguere, T A AU - Paige, David A Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 248 EP - 261 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - volcanic rocks KW - Lunar Reconnaissance Orbiter KW - igneous rocks KW - resurfacing KW - digital terrain models KW - lunar craters KW - explosive eruptions KW - infrared spectra KW - volcanic features KW - volcanism KW - age KW - thermal emission KW - acidic composition KW - spectra KW - vents KW - Moon KW - Lassell Massif KW - Mare Nubium KW - anomalies KW - size KW - morphology KW - calderas KW - pyroclastics KW - volcanoes KW - reflectance KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803774826?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+Lassell+Massif%3B+a+silicic+lunar+volcano&rft.au=Ashley%2C+James+W%3BRobinson%2C+Mark+S%3BStopar%2C+J+D%3BGlotch%2C+T+D%3BHawke%2C+B+Ray%3Bvan+der+Bogert%2C+Carolyn+H%3BHiesinger%2C+H%3BLawrence%2C+Samuel+J%3BJolliff%2C+B+L%3BGreenhagen%2C+Benjamin+T%3BGiguere%2C+T+A%3BPaige%2C+David+A&rft.aulast=Ashley&rft.aufirst=James&rft.date=2016-07-15&rft.volume=273&rft.issue=&rft.spage=248&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.12.036 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 69 N1 - PubXState - NY N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - acidic composition; age; anomalies; calderas; digital terrain models; explosive eruptions; igneous rocks; infrared spectra; Lassell Massif; lunar craters; Lunar Reconnaissance Orbiter; Mare Nubium; Moon; morphology; pyroclastics; reflectance; resurfacing; size; spectra; thermal emission; vents; volcanic features; volcanic rocks; volcanism; volcanoes DO - http://dx.doi.org/10.1016/j.icarus.2015.12.036 ER - TY - JOUR T1 - Lunar swirls; far-UV characteristics AN - 1803774744; 2016-060443 JF - Icarus AU - Hendrix, A R AU - Greathouse, Thomas K AU - Retherford, Kurt D AU - Mandt, K E AU - Gladstone, G Randall AU - Kaufmann, D E AU - Hurley, D M AU - Feldman, P D AU - Pryor, W R AU - Stern, S A AU - Cahill, Joshua T S Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 68 EP - 74 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - silicates KW - lunar swirls KW - LAMP instrument KW - Reiner Gamma KW - plagioclase KW - imagery KW - maturity KW - Moon KW - Lunar Reconnaissance Orbiter KW - far ultraviolet radiation KW - solar wind KW - lunar highlands KW - maria KW - iron KW - anorthite KW - metals KW - ultraviolet spectra KW - sorting KW - Lyman Alpha Mapping Project KW - framework silicates KW - spectra KW - Gerasimovich KW - feldspar group KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803774744?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+swirls%3B+far-UV+characteristics&rft.au=Hendrix%2C+A+R%3BGreathouse%2C+Thomas+K%3BRetherford%2C+Kurt+D%3BMandt%2C+K+E%3BGladstone%2C+G+Randall%3BKaufmann%2C+D+E%3BHurley%2C+D+M%3BFeldman%2C+P+D%3BPryor%2C+W+R%3BStern%2C+S+A%3BCahill%2C+Joshua+T+S&rft.aulast=Hendrix&rft.aufirst=A&rft.date=2016-07-15&rft.volume=273&rft.issue=&rft.spage=68&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.01.003 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 25 N1 - PubXState - NY N1 - Document feature - illus. N1 - Last updated - 2016-11-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - anorthite; far ultraviolet radiation; feldspar group; framework silicates; Gerasimovich; imagery; iron; LAMP instrument; lunar highlands; Lunar Reconnaissance Orbiter; lunar swirls; Lyman Alpha Mapping Project; maria; maturity; metals; Moon; plagioclase; Reiner Gamma; silicates; solar wind; sorting; spectra; ultraviolet spectra DO - http://dx.doi.org/10.1016/j.icarus.2016.01.003 ER - TY - JOUR T1 - The temperatures of Giordano Bruno Crater observed by the Diviner Lunar Radiometer Experiment; application of an effective field of view model for a point-based data set AN - 1803774732; 2016-060454 JF - Icarus AU - Williams, Jean Pierre AU - Sefton-Nash, Elliot AU - Paige, David A Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 205 EP - 213 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - Giordano Bruno Crater KW - effective field or view KW - impact features KW - Moon KW - Lunar Reconnaissance Orbiter KW - data processing KW - brightness temperature KW - mapping KW - ejecta KW - temperature KW - geometry KW - models KW - micrometeorites KW - meteorites KW - craters KW - radiometers KW - thermomechanical properties KW - heterogeneity KW - Diviner Lunar Radiometer Experiment KW - regolith KW - instruments KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803774732?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+temperatures+of+Giordano+Bruno+Crater+observed+by+the+Diviner+Lunar+Radiometer+Experiment%3B+application+of+an+effective+field+of+view+model+for+a+point-based+data+set&rft.au=Williams%2C+Jean+Pierre%3BSefton-Nash%2C+Elliot%3BPaige%2C+David+A&rft.aulast=Williams&rft.aufirst=Jean&rft.date=2016-07-15&rft.volume=273&rft.issue=&rft.spage=205&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.10.034 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 33 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - brightness temperature; craters; data processing; Diviner Lunar Radiometer Experiment; effective field or view; ejecta; geometry; Giordano Bruno Crater; heterogeneity; impact features; instruments; Lunar Reconnaissance Orbiter; mapping; meteorites; micrometeorites; models; Moon; radiometers; regolith; temperature; thermomechanical properties DO - http://dx.doi.org/10.1016/j.icarus.2015.10.034 ER - TY - JOUR T1 - A new lunar digital elevation model from the Lunar Orbiter Laser Altimeter and SELENE Terrain Camera AN - 1803774712; 2016-060465 JF - Icarus AU - Barker, Michael K AU - Mazarico, E M AU - Neumann, G A AU - Zuber, Maria T AU - Haruyama, J AU - Smith, D E Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 346 EP - 355 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - Moon KW - altimetry KW - geodesy KW - digital terrain models KW - errors KW - Terrain Camera KW - LOLA KW - orbital observations KW - Kaguya Mission KW - corrections KW - algorithms KW - accuracy KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803774712?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+lunar+digital+elevation+model+from+the+Lunar+Orbiter+Laser+Altimeter+and+SELENE+Terrain+Camera&rft.au=Barker%2C+Michael+K%3BMazarico%2C+E+M%3BNeumann%2C+G+A%3BZuber%2C+Maria+T%3BHaruyama%2C+J%3BSmith%2C+D+E&rft.aulast=Barker&rft.aufirst=Michael&rft.date=2016-07-15&rft.volume=273&rft.issue=&rft.spage=346&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.07.039 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 39 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table, sketch map N1 - Last updated - 2016-11-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - accuracy; algorithms; altimetry; corrections; digital terrain models; errors; geodesy; Kaguya Mission; LOLA; Moon; orbital observations; Terrain Camera DO - http://dx.doi.org/10.1016/j.icarus.2015.07.039 ER - TY - JOUR T1 - Lunar phase function at 1064 nm from Lunar Orbiter Laser Altimeter passive and active radiometry AN - 1803774694; 2016-060446 JF - Icarus AU - Barker, Michael K AU - Sun, X AU - Mazarico, E M AU - Neumann, G A AU - Zuber, Maria T AU - Smith, D E Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 96 EP - 113 PB - Elsevier, New York, NY VL - 273 SN - 0019-1035, 0019-1035 KW - Reiner Gamma KW - near-infrared spectra KW - Lunar Reconnaissance Orbiter KW - calibration KW - lunar highlands KW - melts KW - iron KW - impact melts KW - photometry KW - mass movements KW - spectra KW - optical maturity KW - opposition effect KW - Moon KW - roughness KW - maria KW - weathering KW - space weathering KW - Jackson Crater KW - titanium KW - metals KW - LOLA KW - thermomechanical properties KW - regolith KW - instruments KW - backscattering KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803774694?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+phase+function+at+1064+nm+from+Lunar+Orbiter+Laser+Altimeter+passive+and+active+radiometry&rft.au=Barker%2C+Michael+K%3BSun%2C+X%3BMazarico%2C+E+M%3BNeumann%2C+G+A%3BZuber%2C+Maria+T%3BSmith%2C+D+E&rft.aulast=Barker&rft.aufirst=Michael&rft.date=2016-07-15&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 69 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables, sketch map N1 - Last updated - 2016-11-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - backscattering; calibration; impact melts; instruments; iron; Jackson Crater; LOLA; lunar highlands; Lunar Reconnaissance Orbiter; maria; mass movements; melts; metals; Moon; near-infrared spectra; opposition effect; optical maturity; photometry; regolith; Reiner Gamma; roughness; space weathering; spectra; thermomechanical properties; titanium; weathering DO - http://dx.doi.org/10.1016/j.icarus.2016.02.008 ER - TY - JOUR T1 - Warming of the Global Ocean: Spatial Structure and Water-Mass Trends AN - 1846406361; PQ0003820232 AB - This study investigates the multidecadal warming and interannual-to-decadal heat content changes in the upper ocean (0-700 m), focusing on vertical and horizontal patterns of variability. These results support a nearly monotonic warming over much of the World Ocean, with a shift toward Southern Hemisphere warming during the well-observed past decade. This is based on objectively analyzed gridded observational datasets and on a modeled state estimate. Besides the surface warming, a warming climate also has a subsurface effect manifesting as a strong deepening of the midthermocline isopycnals, which can be diagnosed directly from hydrographic data. This deepening appears to be a result of heat entering via subduction and spreading laterally from the high-latitude ventilation regions of subtropical mode waters. The basin-average multidecadal warming mainly expands the subtropical mode water volume, with weak changes in the temperature-salinity ([thetas]-S) relationship (known as "spice" variability). However, the spice contribution to the heat content can be locally large, for example in Southern Hemisphere. Multidecadal isopycnal sinking has been strongest over the southern basins and weaker elsewhere with the exception of the Gulf Stream/North Atlantic Current/subtropical recirculation gyre. At interannual to decadal time scales, wind-driven sinking and shoaling of density surfaces still dominate ocean heat content changes, while the contribution from temperature changes along density surfaces tends to decrease as time scales shorten. JF - Journal of Climate AU - Haekkinen, Sirpa AU - Rhines, Peter B AU - Worthen, Denise L AD - NASA Goddard Space Flight Center, Greenbelt, Maryland Y1 - 2016/07// PY - 2016 DA - July 2016 SP - 4949 EP - 4963 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 29 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 - Variability KW - Ventilation KW - Settling rate KW - Subtropical mode water KW - Basins KW - Hydrographic data KW - Gulfs KW - Streams KW - AN, North Atlantic, Gulf Stream KW - Upper ocean KW - Temperature changes KW - Marine KW - Enthalpy KW - Climate models KW - Subduction KW - Density KW - Gyres KW - Climates KW - Climate KW - Gulf Stream KW - World Ocean KW - Water temperature KW - Heat content KW - Ocean currents KW - Interannual variability KW - Oceans KW - Global warming KW - AN, North Atlantic, North Atlantic Current KW - Isopycnals KW - AQ 00001:Water Resources and Supplies KW - SW 0810:General KW - M2 551.58:Climatology (551.58) KW - Q2 09244:Air-sea coupling UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1846406361?accountid=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=Warming+of+the+Global+Ocean%3A+Spatial+Structure+and+Water-Mass+Trends&rft.au=Haekkinen%2C+Sirpa%3BRhines%2C+Peter+B%3BWorthen%2C+Denise+L&rft.aulast=Haekkinen&rft.aufirst=Sirpa&rft.date=2016-07-01&rft.volume=29&rft.issue=13&rft.spage=4949&rft.isbn=&rft.btitle=&rft.title=Journal+of+Climate&rft.issn=08948755&rft_id=info:doi/10.1175%2FJCLI-D-15-0607.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-12-01 N1 - Number of references - 32 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Ventilation; Subduction; Settling rate; Gyres; Climate; Hydrographic data; Water temperature; Heat content; Upper ocean; Ocean currents; Temperature changes; Interannual variability; Climate models; Subtropical mode water; Gulf Stream; Global warming; Isopycnals; Variability; Enthalpy; Density; Oceans; Climates; Basins; Streams; Gulfs; AN, North Atlantic, Gulf Stream; World Ocean; AN, North Atlantic, North Atlantic Current; Marine DO - http://dx.doi.org/10.1175/JCLI-D-15-0607.1 ER - TY - JOUR T1 - Perchlorate and volatiles of the brine of Lake Vida (Antarctica); implication for the in situ analysis of Mars sediments AN - 1840615424; 2016-093998 AB - The cold (-13.4 degrees C), cryoencapsulated, anoxic, interstitial brine of the >27 m thick ice of Lake Vida (Victoria Valley, Antarctica) contains 49 mu g . L (super -1) of perchlorate and 11 mu g . L (super -1) of chlorate. Lake Vida brine (LVBr) may provide an analog for potential oxychlorine-rich subsurface brine on Mars. LVBr volatiles were analyzed by solid-phase microextraction (SPME) gas chromatography-mass spectrometry (GC-MS) with two different SPME fibers. With the exception of volatile organic sulfur compounds, most other volatiles observed were artifacts produced in the GC injector when the thermal decomposition products of oxychlorines reacted with reduced carbon derived from LVBr and the SPME fiber phases. Analysis of MilliQ water with perchlorate (40 mu g . L (super -1) ) showed low level of organic artifacts, reflecting carbon limitation. In order to observe sample-derived organic compounds, both in analog samples and on Mars, the molar abundance of reduced carbon in a sample must exceed those of O (sub 2) and Cl (sub 2) produced during decomposition of oxychlorines. This suggests that the abundance of compounds observed by the Sample Analysis at Mars (SAM) instruments in Sheepbed samples (CB-3, CB5, and CB6) may be controlled by an increase in the reduced-carbon/oxychlorine ratio of these samples. To increase chances of in situ detection of Martian organics during pyrolysis-GC-MS, we propose that the derivatization agents stored on SAM may be used as an external source of reduced carbon, increasing artificially the reduced-carbon to perchlorate ratio during pyrolysis, allowing the expression of more abundant and perhaps more diverse Martian organic matter. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Kenig, Fabien AU - Chou, Luoth AU - McKay, Christopher P AU - Jackson, W Andrew AU - Doran, Peter T AU - Murray, Alison E AU - Fritsen, Christian H Y1 - 2016/07// PY - 2016 DA - July 2016 SP - 1190 EP - 1203 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 121 IS - 7 SN - 2169-9097, 2169-9097 KW - chlorine KW - chromatography KW - oxygen KW - halogens KW - mass spectra KW - Mars KW - Lake Vida KW - samples KW - perchlorate KW - terrestrial planets KW - planets KW - gas chromatography KW - volatiles KW - Victoria Valley KW - Antarctica KW - pyrolysis KW - ice KW - brines KW - sediments KW - spectra KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840615424?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Perchlorate+and+volatiles+of+the+brine+of+Lake+Vida+%28Antarctica%29%3B+implication+for+the+in+situ+analysis+of+Mars+sediments&rft.au=Kenig%2C+Fabien%3BChou%2C+Luoth%3BMcKay%2C+Christopher+P%3BJackson%2C+W+Andrew%3BDoran%2C+Peter+T%3BMurray%2C+Alison+E%3BFritsen%2C+Christian+H&rft.aulast=Kenig&rft.aufirst=Fabien&rft.date=2016-07-01&rft.volume=121&rft.issue=7&rft.spage=1190&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2F2015JE004964 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9100 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 58 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2016-11-17 N1 - SubjectsTermNotLitGenreText - Antarctica; brines; chlorine; chromatography; gas chromatography; halogens; ice; Lake Vida; Mars; mass spectra; oxygen; perchlorate; planets; pyrolysis; samples; sediments; spectra; terrestrial planets; Victoria Valley; volatiles DO - http://dx.doi.org/10.1002/2015JE004964 ER - TY - JOUR T1 - A synthesis of the basal thermal state of the Greenland ice sheet AN - 1840614688; 2016-093991 AB - The basal thermal state of an ice sheet (frozen or thawed) is an important control upon its evolution, dynamics, and response to external forcings. However, this state can only be observed directly at sparse boreholes or inferred conclusively from the presence of subglacial lakes. Here we synthesize spatially extensive inferences of the basal thermal state of the Greenland Ice Sheet to better constrain this state. Existing inferences include outputs from the eight thermomechanical ice-flow models included in the Sea Level Response to Ice Sheet Evolution (SeaRISE) effort. New remote-sensing inferences of the basal thermal state are derived from Holocene radiostratigraphy, modern surface velocity, and Moderate Resolution Imaging Spectroradiometer (MODIS) imagery. Both thermomechanical modeling and remote inferences generally agree that the Northeast Greenland Ice Stream and large portions of the southwestern ice-drainage systems are thawed at the bed, whereas the bed beneath the central ice divides, particularly their west facing slopes, is frozen. Elsewhere, there is poorer agreement regarding the basal thermal state. Both models and remote inferences rarely represent the borehole-observed basal thermal state accurately near NorthGRIP and DYE-3. This synthesis identifies a large portion of the Greenland Ice Sheet (about one third by area), where additional observations would most improve knowledge of its overall basal thermal state. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Earth Surface AU - MacGregor, Joseph A AU - Fahnestock, Mark A AU - Catania, Ginny A AU - Aschwanden, Andy AU - Clow, Gary D AU - Colgan, William T AU - Gogineni, S Prasad AU - Morlighem, Mathieu AU - Nowicki, Sophie M J AU - Paden, John D AU - Price, Stephen F AU - Seroussi, Helene Y1 - 2016/07// PY - 2016 DA - July 2016 SP - 1328 EP - 1350 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 121 IS - 7 SN - 2169-9003, 2169-9003 KW - imagery KW - Quaternary KW - Arctic region KW - drainage KW - lakes KW - Greenland ice sheet KW - plastic flow KW - glacial features KW - thermal regime KW - Holocene KW - ice sheets KW - Cenozoic KW - Greenland KW - sea-level changes KW - boreholes KW - stratification KW - radiometers KW - ice KW - streams KW - glacial geology KW - subglacial lakes KW - remote sensing KW - MODIS KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840614688?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=A+synthesis+of+the+basal+thermal+state+of+the+Greenland+ice+sheet&rft.au=MacGregor%2C+Joseph+A%3BFahnestock%2C+Mark+A%3BCatania%2C+Ginny+A%3BAschwanden%2C+Andy%3BClow%2C+Gary+D%3BColgan%2C+William+T%3BGogineni%2C+S+Prasad%3BMorlighem%2C+Mathieu%3BNowicki%2C+Sophie+M+J%3BPaden%2C+John+D%3BPrice%2C+Stephen+F%3BSeroussi%2C+Helene&rft.aulast=MacGregor&rft.aufirst=Joseph&rft.date=2016-07-01&rft.volume=121&rft.issue=7&rft.spage=1328&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Earth+Surface&rft.issn=21699003&rft_id=info:doi/10.1002%2F2015JF003803 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9011/issues?year=2013 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 97 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables, sketch map N1 - Last updated - 2016-11-17 N1 - SubjectsTermNotLitGenreText - Arctic region; boreholes; Cenozoic; drainage; glacial features; glacial geology; Greenland; Greenland ice sheet; Holocene; ice; ice sheets; imagery; lakes; MODIS; plastic flow; Quaternary; radiometers; remote sensing; sea-level changes; stratification; streams; subglacial lakes; thermal regime DO - http://dx.doi.org/10.1002/2015JF003803 ER - TY - JOUR T1 - Statistical properties of the surface velocity field in the northern Gulf of Mexico sampled by GLAD drifters AN - 1828853724; 2016-088271 AB - The Grand LAgrangian Deployment (GLAD) used multiscale sampling and GPS technology to observe time series of drifter positions with initial drifter separation of O(100 m) to O(10 km), and nominal 5 min sampling, during the summer and fall of 2012 in the northern Gulf of Mexico. Histograms of the velocity field and its statistical parameters are non-Gaussian; most are multimodal. The dominant periods for the surface velocity field are 1-2 days due to inertial oscillations, tides, and the sea breeze; 5-6 days due to wind forcing and submesoscale eddies; 9-10 days and two weeks or longer periods due to wind forcing and mesoscale variability, including the period of eddy rotation. The temporal e-folding scales of a fitted drifter velocity autocorrelation function are bimodal with time scales, 0.25-0.50 days and 0.9-1.4 days, and are the same order as the temporal e-folding scales of observed winds from nearby moored National Data Buoy Center stations. The Lagrangian integral time scales increase from coastal values of 8 h to offshore values of approximately 2 days with peak values of 3-4 days. The velocity variance is large, O(1) m (super 2) /s (super 2) , the surface velocity statistics are more anisotropic, and increased dispersion is observed at flow bifurcations. Horizontal diffusivity estimates are O(10 (super 3) ) m (super 2) /s in coastal regions with weaker flow to O(10 (super 5) ) m (super 2) /s in flow bifurcations, a strong jet, and during the passage of Hurricane Isaac. The Gulf of Mexico surface velocity statistics sampled by the GLAD drifters are a strong function of the feature sampled, topography, and wind forcing. Abstract Copyright (2016). American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Oceans AU - Mariano, A J AU - Ryan, E H AU - Huntley, H S AU - Laurindo, L C AU - Coelho, E AU - Griffa, A AU - Ozgokmen, T M AU - Berta, M AU - Bogucki, D AU - Chen, S S AU - Curcic, M AU - Drouin, K L AU - Gough, M AU - Haus, B K AU - Haza, A C AU - Hogan, P AU - Iskandarani, Mohamed AU - Jacobs, G AU - Kirwan, A D, Jr AU - Laxague, N AU - Lipphardt, B, Jr AU - Magaldi, M G AU - Novelli, G AU - Reniers, A AU - Restrepo, J M AU - Smith, C AU - Valle-Levinson, A AU - Wei, M Y1 - 2016/07// PY - 2016 DA - July 2016 SP - 5193 EP - 5216 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 121 IS - 7 SN - 2169-9275, 2169-9275 KW - currents KW - ocean drifter data KW - ocean circulation KW - sea water KW - sea surface water KW - statistical analysis KW - ocean currents KW - Gulf of Mexico KW - velocity KW - North Atlantic KW - northern Gulf of Mexico KW - Atlantic Ocean KW - 07:Oceanography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1828853724?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Statistical+properties+of+the+surface+velocity+field+in+the+northern+Gulf+of+Mexico+sampled+by+GLAD+drifters&rft.au=Mariano%2C+A+J%3BRyan%2C+E+H%3BHuntley%2C+H+S%3BLaurindo%2C+L+C%3BCoelho%2C+E%3BGriffa%2C+A%3BOzgokmen%2C+T+M%3BBerta%2C+M%3BBogucki%2C+D%3BChen%2C+S+S%3BCurcic%2C+M%3BDrouin%2C+K+L%3BGough%2C+M%3BHaus%2C+B+K%3BHaza%2C+A+C%3BHogan%2C+P%3BIskandarani%2C+Mohamed%3BJacobs%2C+G%3BKirwan%2C+A+D%2C+Jr%3BLaxague%2C+N%3BLipphardt%2C+B%2C+Jr%3BMagaldi%2C+M+G%3BNovelli%2C+G%3BReniers%2C+A%3BRestrepo%2C+J+M%3BSmith%2C+C%3BValle-Levinson%2C+A%3BWei%2C+M&rft.aulast=Mariano&rft.aufirst=A&rft.date=2016-07-01&rft.volume=121&rft.issue=7&rft.spage=5193&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Oceans&rft.issn=21699275&rft_id=info:doi/10.1002%2F2015JC011569 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 50 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table, sketch map N1 - Last updated - 2016-10-25 N1 - SubjectsTermNotLitGenreText - Atlantic Ocean; currents; Gulf of Mexico; North Atlantic; northern Gulf of Mexico; ocean circulation; ocean currents; ocean drifter data; sea surface water; sea water; statistical analysis; velocity DO - http://dx.doi.org/10.1002/2015JC011569 ER - TY - JOUR T1 - Assessing the impact of vertical land motion on twentieth century global mean sea level estimates AN - 1828853637; 2016-088259 AB - Near-global and continuous measurements from satellite altimetry have provided accurate estimates of global mean sea level in the past two decades. Extending these estimates further into the past is a challenge using the historical tide gauge records. Not only is sampling nonuniform in both space and time, but tide gauges are also affected by vertical land motion (VLM) that creates a relative sea level change not representative of ocean variability. To allow for comparisons to the satellite altimetry estimated global mean sea level (GMSL), typically the tide gauges are corrected using glacial isostatic adjustment (GIA) models. This approach, however, does not correct other sources of VLM that remain in the tide gauge record. Here we compare Global Positioning System (GPS) VLM estimates at the tide gauge locations to VLM estimates from GIA models, and assess the influence of non-GIA-related VLM on GMSL estimates. We find that the tide gauges, on average, are experiencing positive VLM (i.e., uplift) after removing the known effect of GIA, resulting in an increase of 0.24 + or - 0.08 mm yr (super -1) in GMSL trend estimates from 1900 to present when using GPS-based corrections. While this result is likely dependent on the subset of tide gauges used and the actual corrections used, it does suggest that non-GIA VLM plays a significant role in twentieth century estimates of GMSL. Given the relatively short GPS records used to obtain these VLM estimates, we also estimate the uncertainty in the GMSL trend that results from limited knowledge of non-GIA-related VLM. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Oceans AU - Hamlington, B D AU - Thompson, P AU - Hammond, W C AU - Blewitt, G AU - Ray, R D Y1 - 2016/07// PY - 2016 DA - July 2016 SP - 4980 EP - 4993 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 121 IS - 7 SN - 2169-9275, 2169-9275 KW - vertical movements KW - tide gauge data KW - Global Positioning System KW - glacial rebound KW - Quaternary KW - isostatic compensation KW - uplifts KW - paleo-oceanography KW - altimetry KW - satellite methods KW - Holocene KW - Cenozoic KW - sea-level changes KW - isostatic rebound KW - upper Holocene KW - world ocean KW - remote sensing KW - 24:Quaternary geology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1828853637?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Assessing+the+impact+of+vertical+land+motion+on+twentieth+century+global+mean+sea+level+estimates&rft.au=Hamlington%2C+B+D%3BThompson%2C+P%3BHammond%2C+W+C%3BBlewitt%2C+G%3BRay%2C+R+D&rft.aulast=Hamlington&rft.aufirst=B&rft.date=2016-07-01&rft.volume=121&rft.issue=7&rft.spage=4980&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Oceans&rft.issn=21699275&rft_id=info:doi/10.1002%2F2016JC011747 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 38 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2016-10-25 N1 - SubjectsTermNotLitGenreText - altimetry; Cenozoic; glacial rebound; Global Positioning System; Holocene; isostatic compensation; isostatic rebound; paleo-oceanography; Quaternary; remote sensing; satellite methods; sea-level changes; tide gauge data; uplifts; upper Holocene; vertical movements; world ocean DO - http://dx.doi.org/10.1002/2016JC011747 ER - TY - JOUR T1 - Examining features of enhanced phytoplankton biomass in the Bay of Bengal using a coupled physical-biological model AN - 1828852283; 2016-088267 AB - A coupled bio-physical ocean model is used to describe areas of enhanced phytoplankton biomass, seen in remotely sensed observations, in the otherwise oligotrophic environment of the Bay of Bengal. The model is based on the Naval Coastal Ocean Model (NCOM), which is one-way coupled to the 13-component Carbon, Silicate, and Nitrogen Ecosystem (CoSiNE) model and configured for the Indian Ocean. Model results are compared and evaluated against a set of in situ shipboard observations as well as ocean color data acquired from several remote sensing platforms. The model is shown to successfully simulate the seasonal cycle of phytoplankton, the markedly contrasting scenarios of phytoplankton distribution in the north versus the south Bay of Bengal, and the biological impact from the 1997/1998 Indian Ocean Dipole (IOD) event. The model simulation provides us with vertical cross sections of phytoplankton biomass from summer and winter blooms in the southwest of the bay, information not found in remotely sensed data. It also successfully reproduces the timing of the onset of the blooms and their spatial extent, thereby providing a measure of its potential for augmenting in situ and remotely sensed observations to improve understanding of the dynamics of primary producers and carbon cycling in one of the most poorly sampled regions of the world's oceans. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Oceans AU - do Rosario Gomes, Helga AU - deRada, Sergio AU - Goes, Joaquim I AU - Chai, Fei Y1 - 2016/07// PY - 2016 DA - July 2016 SP - 5112 EP - 5133 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 121 IS - 7 SN - 2169-9275, 2169-9275 KW - sea water KW - phytoplankton KW - biomass KW - data processing KW - plankton KW - algae KW - Indian Ocean Dipole KW - Naval Coastal Ocean Model KW - Indian Ocean KW - digital simulation KW - porphyrins KW - productivity KW - Plantae KW - numerical models KW - pigments KW - NCOM KW - satellite methods KW - chlorophyll KW - nutrients KW - organic compounds KW - Bay of Bengal KW - seasonal variations KW - remote sensing KW - algal blooms KW - 07:Oceanography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1828852283?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Examining+features+of+enhanced+phytoplankton+biomass+in+the+Bay+of+Bengal+using+a+coupled+physical-biological+model&rft.au=do+Rosario+Gomes%2C+Helga%3BdeRada%2C+Sergio%3BGoes%2C+Joaquim+I%3BChai%2C+Fei&rft.aulast=do+Rosario+Gomes&rft.aufirst=Helga&rft.date=2016-07-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 85 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2016-10-25 N1 - SubjectsTermNotLitGenreText - algae; algal blooms; Bay of Bengal; biomass; chlorophyll; data processing; digital simulation; Indian Ocean; Indian Ocean Dipole; Naval Coastal Ocean Model; NCOM; numerical models; nutrients; organic compounds; phytoplankton; pigments; plankton; Plantae; porphyrins; productivity; remote sensing; satellite methods; sea water; seasonal variations DO - http://dx.doi.org/10.1002/2015JC011508 ER - TY - JOUR T1 - Constraints on iron sulfate and iron oxide mineralogy from ChemCam visible/near-infrared reflectance spectroscopy of Mt. Sharp basal units, Gale Crater, Mars AN - 1819896462; 2016-079213 AB - Relative reflectace point spectra (400-840 nm) were acquired by the Chemistry and Camera (ChemCam) instrument on the Mars Science Laboratory (MSL) rover Curiosity in passive mode (no laser) of drill tailings and broken rock fragments near the rover as it entered the lower reaches of Mt. Sharp and of landforms at distances of 2-8 km. Freshly disturbed surfaces are less subject to the spectral masking effects of dust, and revealed spectral features consistent with the presence of iron oxides and ferric sulfates. We present the first detection on Mars of a approximately 433 nm absorption band consistent with small abundances of ferric sulfates, corroborated by jarosite detections by the Chemistry and Mineralogy (CheMin) X-ray diffraction instrument in the Mojave, Telegraph Peak, and Confidence Hills drilled samples. Disturbed materials near the Bonanza King region also exhibited strong 433 nm bands and negative near-infrared spectral slopes consistent with jarosite. ChemCam passive spectra of the Confidence Hills and Mojave drill tailings showed features suggestive of the crystalline hematite identified by CheMin analyses. The Windjana drill sample tailings exhibited flat, low relative reflectance spectra, explained by the occurrence of magnetite detected by CheMin. Passive spectra of Bonanza King were similar, suggesting the presence of spectrally dark and neutral minerals such as magnetite. Long-distance spectra of the "Hematite Ridge" feature (3-5 km from the rover) exhibited features consistent with crystalline hematite. The Bagnold dune field north of the Hematite Ridge area exhibited low relative reflectance and near-infrared features indicative of basaltic materials (olivine, pyroxene). Light-toned layers south of Hematite Ridge lacked distinct spectral features in the 400-840 nm region, and may represent portions of nearby clay minerals and sulfates mapped with orbital near-infrared observations. The presence of ferric sulfates such as jarosite in the drill tailings suggests a relatively acidic environment, likely associated with flow of iron-bearing fluids, associated oxidation, and/or hydrothermal leaching of sedimentary rocks. Combined with other remote sensing data sets, mineralogical constraints from ChemCam passive spectra will continue to play an important role in interpreting the mineralogy and composition of materials encountered as Curiosity traverses further south within the basal layers of the Mt. Sharp complex. JF - American Mineralogist AU - Johnson, Jeffrey R AU - Bell, James F, III AU - Bender, Steve AU - Blaney, Diana AU - Cloutis, Edward AU - Ehlmann, Bethany L AU - Fraeman, Abigail AU - Gasnault, Olivier AU - Kinch, Kjartan AU - Le Mouelic, Stephane AU - Maurice, Sylvestre AU - Rampe, Elizabeth AU - Vaniman, David AU - Wiens, Roger C Y1 - 2016/07// PY - 2016 DA - July 2016 SP - 1501 EP - 1514 PB - Mineralogical Society of America, Washington, DC VL - 101 IS - 7 SN - 0003-004X, 0003-004X KW - silicates KW - near-infrared spectra KW - volcanic rocks KW - iron oxides KW - igneous rocks KW - optical spectra KW - olivine group KW - Mars KW - landing sites KW - Gale Crater KW - infrared spectroscopy KW - pyroxene group KW - hematite KW - olivine KW - Curiosity Rover KW - basalts KW - orthosilicates KW - oxides KW - ChemCam KW - spectra KW - drilling KW - chain silicates KW - sulfates KW - iron sulfates KW - terrestrial planets KW - nesosilicates KW - planets KW - identification KW - Mars Science Laboratory KW - spectroscopy KW - reflectance KW - Mount Sharp KW - remote sensing KW - magnetite KW - 04:Extraterrestrial geology KW - 01C:Mineralogy of non-silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819896462?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/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=Constraints+on+iron+sulfate+and+iron+oxide+mineralogy+from+ChemCam+visible%2Fnear-infrared+reflectance+spectroscopy+of+Mt.+Sharp+basal+units%2C+Gale+Crater%2C+Mars&rft.au=Johnson%2C+Jeffrey+R%3BBell%2C+James+F%2C+III%3BBender%2C+Steve%3BBlaney%2C+Diana%3BCloutis%2C+Edward%3BEhlmann%2C+Bethany+L%3BFraeman%2C+Abigail%3BGasnault%2C+Olivier%3BKinch%2C+Kjartan%3BLe+Mouelic%2C+Stephane%3BMaurice%2C+Sylvestre%3BRampe%2C+Elizabeth%3BVaniman%2C+David%3BWiens%2C+Roger+C&rft.aulast=Johnson&rft.aufirst=Jeffrey&rft.date=2016-07-01&rft.volume=101&rft.issue=7&rft.spage=1501&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam-2016-5553 L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2016-01-01 N1 - Number of references - 89 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2016-09-16 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - basalts; chain silicates; ChemCam; Curiosity Rover; drilling; Gale Crater; hematite; identification; igneous rocks; infrared spectroscopy; iron oxides; iron sulfates; landing sites; magnetite; Mars; Mars Science Laboratory; Mount Sharp; near-infrared spectra; nesosilicates; olivine; olivine group; optical spectra; orthosilicates; oxides; planets; pyroxene group; reflectance; remote sensing; silicates; spectra; spectroscopy; sulfates; terrestrial planets; volcanic rocks DO - http://dx.doi.org/10.2138/am-2016-5553 ER - TY - JOUR T1 - Gas/solid carbon branching ratios in surface-mediated reactions and the incorporation of carbonaceous material into planetesimals AN - 1819895654; 2016-079115 AB - We report the ratio of the initial carbon available as CO that forms gas-phase compounds compared to the fraction that deposits as a carbonaceous solid (the gas/solid branching ratio) as a function of time and temperature for iron, magnetite, and amorphous iron silicate smoke catalysts during surface-mediated reactions in an excess of hydrogen and in the presence of N (sub 2) . This fraction varies from more than 99% for an amorphous iron silicate smoke at 673 K to less than 40% for a magnetite catalyst at 873 K. The CO not converted into solids primarily forms methane, ethane, water, and CO (sub 2) , as well as a very wide range of organic molecules at very low concentration. Carbon deposits do not form continuous coatings on the catalytic surfaces, but instead form extremely high surface area per unit volume "filamentous" structures. While these structures will likely form more slowly but over much longer times in protostellar nebulae than in our experiments due to the much lower partial pressure of CO, such fluffy coatings on the surfaces of chondrules or calcium aluminum inclusions could promote grain-grain sticking during low-velocity collisions. Abstract Copyright Published 2016. This article is a U.S. Government work and is in the public domain in the USA. JF - Meteoritics & Planetary Science AU - Nuth, Joseph A AU - Johnson, Natasha M AU - Ferguson, Frank T AU - Carayon, Alicia Y1 - 2016/07// PY - 2016 DA - July 2016 SP - 1310 EP - 1322 PB - Meteoritical Society, Fayetteville, AR VL - 51 IS - 7 SN - 1086-9379, 1086-9379 KW - silicates KW - iron silicates KW - calcium-aluminum inclusions KW - aliphatic hydrocarbons KW - ethane KW - planetesimals KW - iron KW - temperature KW - nitrogen KW - carbon dioxide KW - laboratory studies KW - catalysis KW - inclusions KW - oxides KW - interstellar dust KW - mineral surface KW - water KW - carbonaceous composition KW - experimental studies KW - methane KW - gaseous phase KW - amorphous materials KW - cosmochemistry KW - alkanes KW - gases KW - solar nebula KW - carbon monoxide KW - organic compounds KW - cosmic dust KW - partial pressure KW - metals KW - hydrogen KW - hydrocarbons KW - magnetite KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819895654?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Gas%2Fsolid+carbon+branching+ratios+in+surface-mediated+reactions+and+the+incorporation+of+carbonaceous+material+into+planetesimals&rft.au=Nuth%2C+Joseph+A%3BJohnson%2C+Natasha+M%3BFerguson%2C+Frank+T%3BCarayon%2C+Alicia&rft.aulast=Nuth&rft.aufirst=Joseph&rft.date=2016-07-01&rft.volume=51&rft.issue=7&rft.spage=1310&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12666 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 33 N1 - PubXState - AR N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2016-09-16 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; amorphous materials; calcium-aluminum inclusions; carbon dioxide; carbon monoxide; carbonaceous composition; catalysis; cosmic dust; cosmochemistry; ethane; experimental studies; gaseous phase; gases; hydrocarbons; hydrogen; inclusions; interstellar dust; iron; iron silicates; laboratory studies; magnetite; metals; methane; mineral surface; nitrogen; organic compounds; oxides; partial pressure; planetesimals; silicates; solar nebula; temperature; water DO - http://dx.doi.org/10.1111/maps.12666 ER - TY - JOUR T1 - Interstratification of graphene-like carbon layers within black talc from southeastern China; implications to sedimentary talc formation AN - 1819893884; 2016-079227 AB - Large deposits of unusual black talc interstratified with dolostone layers of the late Neoproterozoic Dengying Formation were discovered in Guangfeng County, Jiangxi Province, southeastern China. The black talc ore exhibits primarily oolitic structures and consists mainly of talc (30-70 wt%), dolomite, and quartz, with trace amounts of pyrite and apatite. The ooids are composed of nearly pure black talc crystals, most of which consist of ultrafine nano-plates. The black talc contains small amounts of carbon, which causes the black coloring. Raman spectra and X-ray photoelectron spectroscopy (XPS) results indicate structural disorder and chemical impurities within bonds (e.g., sp (super 3) hybridized carbon and C-O bonds) in the carbonaceous material, instead of perfectly structured graphite or graphene. Isolated graphene-like carbon interlayers are present in the talc nano-crystals, as shown by Z-contrast transmission electron microscope (TEM) imaging. Based on previous studies on Mg-silicate precipitation from surface water, we propose a sedimentary formation mechanism for the black talc, in which tetrahedral-octahedral-tetrahedral (T-O-T) layers of Mg-silicates, 1 approximately 2 unit-cells thick, co-precipitated with abundant organic matter derived from microorganisms thriving in locally Al-depleted sea water with high concentrations of Mg (super 2+) and SiO (sub 2) (aq), in a shallow marine or lagoonal environment. The involvement of organic matter may have facilitated the precipitation of Mg-silicate. Further diagenesis and re-crystalliztion of the biomass-coated precursor resulted in the formation of graphene-like layers between neighboring talc nano-crystals with same orientation. JF - American Mineralogist AU - Li, Chengxiang AU - Wang, Rucheng AU - Xu, Huifang AU - Lu, Xiancai AU - Konishi, Hiromi AU - He, Kun Y1 - 2016/07// PY - 2016 DA - July 2016 SP - 1668 EP - 1678 PB - Mineralogical Society of America, Washington, DC VL - 101 IS - 7 SN - 0003-004X, 0003-004X KW - silicates KW - Far East KW - upper Precambrian KW - X-ray diffraction data KW - silica minerals KW - Guangfeng China KW - dolostone KW - dolomite KW - sedimentary rocks KW - mineral composition KW - Jiangxi China KW - graphene KW - fullerene KW - carbon KW - talc KW - framework silicates KW - spectra KW - Sinian KW - Asia KW - China KW - Neoproterozoic KW - apatite KW - Precambrian KW - diffractograms KW - black talc KW - Proterozoic KW - electron microscopy data KW - phosphates KW - native elements KW - X-ray spectra KW - TEM data KW - talc deposits KW - Raman spectra KW - marine environment KW - diagenesis KW - Dengying Formation KW - quartz KW - lagoonal environment KW - sheet silicates KW - pyrite KW - carbonate rocks KW - sulfides KW - carbonates KW - SEM data KW - microorganisms KW - 06A:Sedimentary petrology KW - 01C:Mineralogy of non-silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819893884?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/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=Interstratification+of+graphene-like+carbon+layers+within+black+talc+from+southeastern+China%3B+implications+to+sedimentary+talc+formation&rft.au=Li%2C+Chengxiang%3BWang%2C+Rucheng%3BXu%2C+Huifang%3BLu%2C+Xiancai%3BKonishi%2C+Hiromi%3BHe%2C+Kun&rft.aulast=Li&rft.aufirst=Chengxiang&rft.date=2016-07-01&rft.volume=101&rft.issue=7&rft.spage=1668&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam-2016-5600 L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2016-01-01 N1 - Number of references - 82 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2016-09-16 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - apatite; Asia; black talc; carbon; carbonate rocks; carbonates; China; Dengying Formation; diagenesis; diffractograms; dolomite; dolostone; electron microscopy data; Far East; framework silicates; fullerene; graphene; Guangfeng China; Jiangxi China; lagoonal environment; marine environment; microorganisms; mineral composition; native elements; Neoproterozoic; phosphates; Precambrian; Proterozoic; pyrite; quartz; Raman spectra; sedimentary rocks; SEM data; sheet silicates; silica minerals; silicates; Sinian; spectra; sulfides; talc; talc deposits; TEM data; upper Precambrian; X-ray diffraction data; X-ray spectra DO - http://dx.doi.org/10.2138/am-2016-5600 ER - TY - JOUR T1 - Esperance; multiple episodes of aqueous alteration involving fracture fills and coatings at Matijevic Hill, Mars AN - 1819893869; 2016-079214 AB - In the search for evidence of past aqueous activity by the Mars Exploration Rover Opportunity, fracture-filling veins and rock coatings are prime candidates for exploration. At one location within a segment of remaining rim material surrounding Endeavour Crater, a set of "boxwork" fractures in an outcrop called Esperance are filled by a bright, hydrated, and highly siliceous (SiO (sub 2) approximately 66 wt%) material, which has overall a montmorillonite-like chemical composition. This material is partially covered by patches of a thin, dark coating that is sulfate-rich (SO (sub 3) approximately 21 wt%) but also contains significant levels of Si, Fe, Ca, and Mg. The simultaneous presence of abundant S, Si, and Fe indicates significant mineralogical complexity within the coating. This combination of vein and coating compositions is unlike previous analyses on Mars. Both materials are heterogeneously eroded, presumably by eolian abrasion. The evidence indicates at least two separate episodes of solute precipitation from aqueous fluids at this location, possibly widely separated in time. In addition to the implications for multiple episodes of alteration at the surface of the planet, aqueous chemical environments such as these would have been habitable at the time of their formation and are also favorable for preservation of organic material. JF - American Mineralogist AU - Clark, Benton C AU - Morris, Richard V AU - Herkenhoff, Kenneth E AU - Farrand, William H AU - Gellert, Ralf AU - Jolliff, Bradley L AU - Arvidson, Raymond E AU - Squyres, Steven W AU - Mittlefehldt, David W AU - Ming, Douglas W AU - Yen, Albert S Y1 - 2016/07// PY - 2016 DA - July 2016 SP - 1515 EP - 1526 PB - Mineralogical Society of America, Washington, DC VL - 101 IS - 7 SN - 0003-004X, 0003-004X KW - silicates KW - alteration KW - Mars KW - Mars Exploration Rover KW - fractures KW - Esperance outcrop KW - chemical composition KW - montmorillonite KW - sulfates KW - Opportunity Rover KW - surface water KW - solutes KW - smectite KW - veins KW - clay minerals KW - terrestrial planets KW - planets KW - organic compounds KW - habitability KW - precipitation KW - sheet silicates KW - aquatic environment KW - Matijevic Hill KW - Endeavour Crater KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819893869?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/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=Esperance%3B+multiple+episodes+of+aqueous+alteration+involving+fracture+fills+and+coatings+at+Matijevic+Hill%2C+Mars&rft.au=Clark%2C+Benton+C%3BMorris%2C+Richard+V%3BHerkenhoff%2C+Kenneth+E%3BFarrand%2C+William+H%3BGellert%2C+Ralf%3BJolliff%2C+Bradley+L%3BArvidson%2C+Raymond+E%3BSquyres%2C+Steven+W%3BMittlefehldt%2C+David+W%3BMing%2C+Douglas+W%3BYen%2C+Albert+S&rft.aulast=Clark&rft.aufirst=Benton&rft.date=2016-07-01&rft.volume=101&rft.issue=7&rft.spage=1515&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam-2016-5575 L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2016-01-01 N1 - Number of references - 53 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2016-09-16 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - alteration; aquatic environment; chemical composition; clay minerals; Endeavour Crater; Esperance outcrop; fractures; habitability; Mars; Mars Exploration Rover; Matijevic Hill; montmorillonite; Opportunity Rover; organic compounds; planets; precipitation; sheet silicates; silicates; smectite; solutes; sulfates; surface water; terrestrial planets; veins DO - http://dx.doi.org/10.2138/am-2016-5575 ER - TY - JOUR T1 - Airborne observations of bioaerosol over the Southeast United States using a Wideband Integrated Bioaerosol Sensor AN - 1815702156; PQ0003593039 AB - Biological aerosols represent a diverse subset of particulate matter that is emitted directly to the atmosphere in the form of (but not limited to) bacteria, fungal spores, pollens, viruses, and plant debris. These particles can have local air quality implications, but potentially play a larger climate role by acting as efficient ice nucleating particles (INPs) and cloud condensation nuclei. We have deployed a Wideband Integrated Bioaerosol Sensor on the NASA DC-8 aircraft to (1) quantify boundary layer (BL) variability of fluorescent biological aerosol particle (FBAP) concentrations in the Southeast United States (SEUS), (2) link this variability explicitly to land cover heterogeneity in the region, and (3) examine the vertical profile of bioaerosols in the context of convective vertical redistribution. Flight-averaged FBAP concentrations ranged between 0.1 and 0.43scm super(-3) (cm super(-3) at standard temperature and pressure) with relatively homogeneous concentrations throughout the region; croplands showed the highest concentrations in the BL (0.37scm super(-3)), and lowest concentrations were associated with evergreen forests (0.24scm super(-3)). Observed FBAP concentrations are in generally good agreement with model parameterized emission rates for bacteria, and discrepancies are likely the result of fungal spore contributions. Shallow convection in the region is shown to be a relatively efficient lofting mechanism as the vertical transport efficiency of FBAP is at least equal to black carbon aerosol, suggesting that ground-level FBAP survives transport into the free troposphere to be available for INP activation. Comparison of the fraction of coarse-mode particles that were biological (f sub(FBAP)) suggested that the SEUS (f sub(FBAP)=8.5%) was a much stronger source of bioaerosols than long-range transport during a Saharan Air Layer (SAL) dust event (f sub(FBAP)=0.17%) or summertime marine emissions in the Gulf of Mexico (f sub(FBAP)=0.73%). Key Points * The southeast USA region is a significant source of bioaerosols * Shallow convection allows vertical transport of bioaerosols * Emission rates from different land types are relatively homogeneous JF - Journal of Geophysical Research: Atmospheres AU - Ziemba, Luke D AU - Beyersdorf, Andreas J AU - Chen, Gao AU - Corr, Chelsea A AU - Crumeyrolle, Suzanne N AU - Diskin, Glenn AU - Hudgins, Charlie AU - Martin, Robert AU - Mikoviny, Tomas AU - Moore, Richard AU - Shook, Michael AU - Thornhill, KLee AU - Winstead, Edward L AU - Wisthaler, Armin AU - Anderson, Bruce E AD - NASA Langley Research Center, Hampton, Virginia, USA. Y1 - 2016/07// PY - 2016 DA - July 2016 SP - 8506 EP - 8524 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 121 IS - 14 SN - 2169-897X, 2169-897X KW - Virology & AIDS Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Convection KW - Atmospheric pollution models KW - Sensors KW - Particulate matter KW - Forests KW - Plant debris KW - black carbon KW - Nuclei KW - Ice KW - Aerosols KW - Atmospheric pollution KW - Cloud condensation nuclei KW - Fungi in air KW - Clouds KW - Long-range transport KW - Boundary layers KW - Condensation KW - Variability KW - Bioaerosols KW - Aerosol particles KW - Convection development KW - Black carbon aerosols KW - Air quality KW - USA, Southeast KW - Dust KW - Models KW - Carbon KW - Aircraft KW - Pressure KW - Heterogeneity KW - Temperature effects KW - Bacteria KW - Airborne sensing KW - Climate KW - Troposphere KW - Dusts KW - Vertical advection KW - Pollen KW - ASW, Mexico Gulf KW - USA KW - Convective activity KW - Africa, Sahara Desert KW - Spores KW - Q2 09243:Structure, mechanics and thermodynamics KW - V 22490:Miscellaneous KW - M2 551.510.42:Air Pollution (551.510.42) KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815702156?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=Airborne+observations+of+bioaerosol+over+the+Southeast+United+States+using+a+Wideband+Integrated+Bioaerosol+Sensor&rft.au=Ziemba%2C+Luke+D%3BBeyersdorf%2C+Andreas+J%3BChen%2C+Gao%3BCorr%2C+Chelsea+A%3BCrumeyrolle%2C+Suzanne+N%3BDiskin%2C+Glenn%3BHudgins%2C+Charlie%3BMartin%2C+Robert%3BMikoviny%2C+Tomas%3BMoore%2C+Richard%3BShook%2C+Michael%3BThornhill%2C+KLee%3BWinstead%2C+Edward+L%3BWisthaler%2C+Armin%3BAnderson%2C+Bruce+E&rft.aulast=Ziemba&rft.aufirst=Luke&rft.date=2016-07-01&rft.volume=121&rft.issue=14&rft.spage=8506&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2015JD024669 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-08-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Clouds; Convection; Airborne sensing; Aerosols; Carbon; Sensors; Spores; Pollen; Vertical advection; Temperature effects; Ice; Climate; Particulate matter; Forests; Troposphere; Plant debris; Dust; Models; black carbon; Aircraft; Boundary layers; Condensation; Nuclei; Pressure; Long-range transport; Atmospheric pollution models; Atmospheric pollution; Bioaerosols; Aerosol particles; Convective activity; Air quality; Black carbon aerosols; Convection development; Cloud condensation nuclei; Fungi in air; Bacteria; Variability; Dusts; Heterogeneity; ASW, Mexico Gulf; USA; Africa, Sahara Desert; USA, Southeast DO - http://dx.doi.org/10.1002/2015JD024669 ER - TY - JOUR T1 - Large wind ripples on Mars; a record of atmospheric evolution AN - 1815673362; 2016-074696 AB - Wind blowing over sand on Earth produces decimeter-wavelength ripples and hundred-meter--to kilometer-wavelength dunes: bedforms of two distinct size modes. Observations from the Mars Science Laboratory Curiosity rover and the Mars Reconnaissance Orbiter reveal that Mars hosts a third stable wind-driven bedform, with meter-scale wavelengths. These bedforms are spatially uniform in size and typically have asymmetric profiles with angle-of-repose lee slopes and sinuous crest lines, making them unlike terrestrial wind ripples. Rather, these structures resemble fluid-drag ripples, which on Earth include water-worked current ripples, but on Mars instead form by wind because of the higher kinematic viscosity of the low-density atmosphere. A reevaluation of the wind-deposited strata in the Burns formation (about 3.7 billion years old or younger) identifies potential wind-drag ripple stratification formed under a thin atmosphere. JF - Science AU - Lapotre, M G A AU - Ewing, R C AU - Lamb, M P AU - Fischer, W W AU - Grotzinger, J P AU - Rubin, D M AU - Lewis, K W AU - Ballard, M J AU - Day, M AU - Gupta, S AU - Banham, S G AU - Bridges, N T AU - Des Marais, D J AU - Fraeman, A A AU - Grant, J A AU - Herkenhoff, K E AU - Ming, D W AU - Mischna, M A AU - Rice, M S AU - Sumner, D A AU - Vasavada, A R AU - Yingst, R A Y1 - 2016/07/01/ PY - 2016 DA - 2016 Jul 01 SP - 55 EP - 58 PB - American Association for the Advancement of Science, Washington, DC VL - 353 IS - 6294 SN - 0036-8075, 0036-8075 KW - eolian features KW - sediment transport KW - paleoatmosphere KW - landform evolution KW - atmosphere KW - Mars KW - ripple marks KW - bedforms KW - terrestrial planets KW - planets KW - bedding plane irregularities KW - transport KW - Curiosity Rover KW - Mars Science Laboratory KW - wind transport KW - sedimentary structures KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815673362?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Large+wind+ripples+on+Mars%3B+a+record+of+atmospheric+evolution&rft.au=Lapotre%2C+M+G+A%3BEwing%2C+R+C%3BLamb%2C+M+P%3BFischer%2C+W+W%3BGrotzinger%2C+J+P%3BRubin%2C+D+M%3BLewis%2C+K+W%3BBallard%2C+M+J%3BDay%2C+M%3BGupta%2C+S%3BBanham%2C+S+G%3BBridges%2C+N+T%3BDes+Marais%2C+D+J%3BFraeman%2C+A+A%3BGrant%2C+J+A%3BHerkenhoff%2C+K+E%3BMing%2C+D+W%3BMischna%2C+M+A%3BRice%2C+M+S%3BSumner%2C+D+A%3BVasavada%2C+A+R%3BYingst%2C+R+A&rft.aulast=Lapotre&rft.aufirst=M+G&rft.date=2016-07-01&rft.volume=353&rft.issue=6294&rft.spage=55&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.aaf3206 L2 - http://www.sciencemag.org/magazine LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 39 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2016-09-01 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - atmosphere; bedding plane irregularities; bedforms; Curiosity Rover; eolian features; landform evolution; Mars; Mars Science Laboratory; paleoatmosphere; planets; ripple marks; sediment transport; sedimentary structures; terrestrial planets; transport; wind transport DO - http://dx.doi.org/10.1126/science.aaf3206 ER - TY - JOUR T1 - Multi-wheat-model ensemble responses to interannual climate variability AN - 1808699116; PQ0003238829 AB - We compare 27 wheat models' yield responses to interannual climate variability, analyzed at locations in Argentina, Australia, India, and The Netherlands as part of the Agricultural Model Intercomparison and Improvement Project (AgMIP) Wheat Pilot. Each model simulated 1981-2010 grain yield, and we evaluate results against the interannual variability of growing season temperature, precipitation, and solar radiation. The amount of information used for calibration has only a minor effect on most models' climate response, and even small multi-model ensembles prove beneficial. Wheat model clusters reveal common characteristics of yield response to climate; however models rarely share the same cluster at all four sites indicating substantial independence. Only a weak relationship (R2 less than or equal to 0.24) was found between the models' sensitivities to interannual temperature variability and their response to long-term warming, suggesting that additional processes differentiate climate change impacts from observed climate variability analogs and motivating continuing analysis and model development efforts. JF - Environmental Modelling & Software AU - Ruane, Alex C AU - Hudson, Nicholas I AU - Asseng, Senthold AU - Camarrano, Davide AU - Ewert, Frank AU - Martre, Pierre AU - Boote, Kenneth J AU - Thorburn, Peter J AU - Aggarwal, Pramod K AU - Angulo, Carlos AU - Basso, Bruno AU - Bertuzzi, Patrick AU - Biernath, Christian AU - Brisson, Nadine AU - Challinor, Andrew J AU - Doltra, Jordi AU - Gayler, Sebastian AU - Goldberg, Richard AU - Grant, Robert F AU - Heng, Lee AU - Hooker, Josh AU - Hunt, Leslie A AU - Ingwersen, Joachim AU - Izaurralde, Roberto C AU - Kersebaum, Kurt Christian AU - Kumar, Soora Naresh AU - Mueller, Christoph AU - Nendel, Claas AU - O'Leary, Garry AU - Olesen, Joergen E AU - Osborne, Tom M AU - Palosuo, Taru AU - Priesack, Eckart AU - Ripoche, Dominique AU - Rotter, Reimund P AU - Semenov, Mikhail A AU - Shcherbak, Iurii AU - Steduto, Pasquale AU - Stockle, Claudio O AU - Stratonovitch, Pierre AU - Streck, Thilo AU - Supit, Iwan AU - Tao, Fulu AU - Travasso, Maria AU - Waha, Katharina AU - Wallach, Daniel AU - White, Jeffrey W AU - Wolf, Joost AD - National Aeronautics and Space Administration, Goddard Institute for Space Studies, New York, NY, USA Y1 - 2016/07// PY - 2016 DA - July 2016 SP - 86 EP - 101 PB - Elsevier B.V., P.O. Box 800 Kidlington Oxford OX5 1DX United Kingdom VL - 81 SN - 1364-8152, 1364-8152 KW - Environment Abstracts; Water Resources Abstracts; Aqualine Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality KW - Crop modeling KW - Uncertainty KW - Multi-model ensemble KW - Wheat KW - AgMIP KW - Climate impacts KW - Temperature KW - Precipitation KW - Interannual variability KW - Variability KW - Rainfall KW - Climate change KW - Analogs KW - Solar radiation KW - India KW - Crop Yield KW - Triticum aestivum KW - Computer programs KW - Calibrations KW - Climatic Changes KW - Australia KW - Netherlands KW - Grains KW - Seasonal variations KW - Modelling KW - Temperature effects KW - Atmospheric precipitations KW - Sensitivity KW - Climates KW - Model Studies KW - Argentina KW - AQ 00001:Water Resources and Supplies KW - ENA 06:Food & Drugs KW - SW 0810:General KW - Q5 08502:Methods and instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808699116?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Modelling+%26+Software&rft.atitle=Multi-wheat-model+ensemble+responses+to+interannual+climate+variability&rft.au=Ruane%2C+Alex+C%3BHudson%2C+Nicholas+I%3BAsseng%2C+Senthold%3BCamarrano%2C+Davide%3BEwert%2C+Frank%3BMartre%2C+Pierre%3BBoote%2C+Kenneth+J%3BThorburn%2C+Peter+J%3BAggarwal%2C+Pramod+K%3BAngulo%2C+Carlos%3BBasso%2C+Bruno%3BBertuzzi%2C+Patrick%3BBiernath%2C+Christian%3BBrisson%2C+Nadine%3BChallinor%2C+Andrew+J%3BDoltra%2C+Jordi%3BGayler%2C+Sebastian%3BGoldberg%2C+Richard%3BGrant%2C+Robert+F%3BHeng%2C+Lee%3BHooker%2C+Josh%3BHunt%2C+Leslie+A%3BIngwersen%2C+Joachim%3BIzaurralde%2C+Roberto+C%3BKersebaum%2C+Kurt+Christian%3BKumar%2C+Soora+Naresh%3BMueller%2C+Christoph%3BNendel%2C+Claas%3BO%27Leary%2C+Garry%3BOlesen%2C+Joergen+E%3BOsborne%2C+Tom+M%3BPalosuo%2C+Taru%3BPriesack%2C+Eckart%3BRipoche%2C+Dominique%3BRotter%2C+Reimund+P%3BSemenov%2C+Mikhail+A%3BShcherbak%2C+Iurii%3BSteduto%2C+Pasquale%3BStockle%2C+Claudio+O%3BStratonovitch%2C+Pierre%3BStreck%2C+Thilo%3BSupit%2C+Iwan%3BTao%2C+Fulu%3BTravasso%2C+Maria%3BWaha%2C+Katharina%3BWallach%2C+Daniel%3BWhite%2C+Jeffrey+W%3BWolf%2C+Joost&rft.aulast=Ruane&rft.aufirst=Alex&rft.date=2016-07-01&rft.volume=81&rft.issue=&rft.spage=86&rft.isbn=&rft.btitle=&rft.title=Environmental+Modelling+%26+Software&rft.issn=13648152&rft_id=info:doi/10.1016%2Fj.envsoft.2016.03.008 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-07-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Atmospheric precipitations; Temperature effects; Analogs; Climate change; Solar radiation; Seasonal variations; Modelling; Computer programs; Sensitivity; Rainfall; Temperature; Grains; Wheat; Variability; Calibrations; Climates; Climatic Changes; Precipitation; Crop Yield; Model Studies; Triticum aestivum; Argentina; Australia; Netherlands; India DO - http://dx.doi.org/10.1016/j.envsoft.2016.03.008 ER - TY - JOUR T1 - Cassini's Grand Finale AN - 1808667301; PQ0003363423 JF - Nature Geoscience AU - Edgington, Scott G AU - Spilker, Linda J AD - Deputy Project Scientist and Project Scientist for the Cassini mission at the NASA Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, California 91109, USA Y1 - 2016/07// PY - 2016 DA - July 2016 SP - 472 EP - 473 PB - Nature Publishing Group, The Macmillan Building London N1 9XW United Kingdom VL - 9 IS - 7 SN - 1752-0894, 1752-0894 KW - Ecology Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Geology KW - Q2 09262:Methods and instruments KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808667301?accountid=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=Nature+Geoscience&rft.atitle=Cassini%27s+Grand+Finale&rft.au=Edgington%2C+Scott+G%3BSpilker%2C+Linda+J&rft.aulast=Edgington&rft.aufirst=Scott&rft.date=2016-07-01&rft.volume=9&rft.issue=7&rft.spage=472&rft.isbn=&rft.btitle=&rft.title=Nature+Geoscience&rft.issn=17520894&rft_id=info:doi/10.1038%2Fngeo2753 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-07-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Geology DO - http://dx.doi.org/10.1038/ngeo2753 ER - TY - JOUR T1 - Climate change decouples drought from early wine grape harvests in France AN - 1808640726; PQ0003336031 AB - Across the world, wine grape phenology has advanced in recent decades, in step with climate-change-induced trends in temperature-the main driver of fruit maturation-and drought. Fully understanding how climate change contributes to changes in harvest dates, however, requires analysing wine grape phenology and its relationship to climate over a longer-term context, including data predating anthropogenic interference in the climate system. Here, we investigate the climatic controls of wine grape harvest dates from 1600-2007 in France and Switzerland using historical harvest and climate data. Early harvests occur with warmer temperatures (-6days degree C super(-1)) and are delayed by wet conditions (+0.07daysmm super(-1); +1.68days PDSI super(-1)) during spring and summer. In recent decades (1981-2007), however, the relationship between harvest timing and drought has broken down. Historically, high summer temperatures in Western Europe, which would hasten fruit maturation, required drought conditions to generate extreme heat. The relationship between drought and temperature in this region, however, has weakened in recent decades and enhanced warming from anthropogenic greenhouse gases can generate the high temperatures needed for early harvests without drought. Our results suggest that climate change has fundamentally altered the climatic drivers of early wine grape harvests in France, with possible ramifications for viticulture management and wine quality. JF - Nature Climate Change AU - Cook, Benjamin I AU - Wolkovich, Elizabeth M AD - NASA Goddard Institute for Space Studies, New York City, New York 10025, USA; Division of Ocean and Climate Physics, Lamont-Doherty Earth Observatory, Palisades, New York 10964, USA Y1 - 2016/07// PY - 2016 DA - July 2016 SP - 715 EP - 719 PB - Nature Publishing Group, The Macmillan Building London N1 9XW United Kingdom VL - 6 IS - 7 SN - 1758-678X, 1758-678X KW - ASFA 3: Aquatic Pollution & Environmental Quality; Environment Abstracts; Meteorological & Geoastrophysical Abstracts KW - Fruits KW - Historical account KW - Drought conditions KW - Climate change KW - Anthropogenic factors KW - Summer KW - Drought KW - Switzerland KW - High temperatures KW - ANE, France KW - Phenology KW - Interspecific relationships KW - High temperature KW - Droughts KW - Temperature effects KW - Temperature KW - Viticulture KW - Climatic trends KW - Greenhouse effect KW - Summer temperatures KW - Sexual maturity KW - Vitaceae KW - Greenhouse gases KW - M2 551.583:Variations (551.583) KW - Q5 08502:Methods and instruments KW - ENA 20:Weather Modification & Geophysical Change UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808640726?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nature+Climate+Change&rft.atitle=Climate+change+decouples+drought+from+early+wine+grape+harvests+in+France&rft.au=Cook%2C+Benjamin+I%3BWolkovich%2C+Elizabeth+M&rft.aulast=Cook&rft.aufirst=Benjamin&rft.date=2016-07-01&rft.volume=6&rft.issue=7&rft.spage=715&rft.isbn=&rft.btitle=&rft.title=Nature+Climate+Change&rft.issn=1758678X&rft_id=info:doi/10.1038%2Fnclimate2960 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-07-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Temperature effects; Interspecific relationships; Phenology; Sexual maturity; Climate change; Anthropogenic factors; Greenhouse effect; Droughts; High temperatures; Drought conditions; Climatic trends; Summer temperatures; Drought; Greenhouse gases; Historical account; Fruits; High temperature; Temperature; Viticulture; Summer; Vitaceae; ANE, France; Switzerland DO - http://dx.doi.org/10.1038/nclimate2960 ER - TY - JOUR T1 - Targeted reforestation could reverse declines in connectivity for understory birds in a tropical habitat corridor AN - 1808630942; PQ0003462199 AB - Re-establishing connectivity between protected areas isolated by habitat clearing is a key conservation goal in the humid tropics. In northeastern Costa Rica, payments for environmental services (PES) and a government ban on deforestation have subsidized forest protection and reforestation in the San Juan-La Selva Biological Corridor (SJLSBC), resulting in a decline in mature forest loss and the expansion of tree plantations. We use field studies and graph models to assess how conservation efforts have altered functional connectivity over the last 25 years for four species of insectivorous understory birds. Field playback studies assessed how reforestation habitat quality affected the willingness of Myrmeciza exsul, Henicorhina leucosticta, Thamnophilus atrinucha, and Glyphorynchus spirurus to travel outside forest habitat for territorial defense. Observed travel distances were greatest in nonnative and native tree plantations with high understory stem density, regardless of overstory composition. In contrast, tree plantations with low stem density had travel responses comparable to open pasture for three of the four bird species. We modeled landscape connectivity for each species using graph models based on varying possible travel distances in tree plantations, gallery forests, and pastures. From 1986 to 2011, connectivity for all species declined in the SJLSBC landscape (5825 km super(2)) by 14% to 21% despite only a 4.9% net loss in forest area and the rapid expansion of tree plantations over 2% of the landscape. Plantation placement in the landscape limited their potential facilitation of connectivity because they were located either far from forest cover or within already contiguous forest areas. We mapped current connectivity bottlenecks and identified priority areas for future reforestation. We estimate that reforestation of priority areas could improve connectivity by 2% with only a 1% gain in forest cover, an impressive gain given the small area reforested. Results indicate key locations where spatial targeting of PES within the SJLSBC study region would protect existing forest connectivity and enhance the connectivity benefits of reforestation. JF - Ecological Applications AU - Fagan, Matthew E AU - Defries, Ruth S AU - Sesnie, Steven E AU - Arroyo-Mora, J Pablo AU - Chazdon, Robin L AD - Biospheric Sciences, Goddard Space Flight Center, NASA, Greenbelt, Maryland 20771, USA, mfagan@umbc.edu Y1 - 2016/07// PY - 2016 DA - July 2016 SP - 1456 EP - 1474 PB - Ecological Society of America, 1707 H Street, N.W., Suite 400 Washington DC 20006 United States VL - 26 IS - 5 SN - 1051-0761, 1051-0761 KW - Environment Abstracts; Ecology Abstracts KW - Costa Rica KW - fragmentation KW - functional connectivity KW - Glyphorynchus spirurus KW - Henicorhina leucosticta KW - Myrmeciza exsul KW - payments for environmental services KW - reforestation KW - Thamnophilus atrinucha KW - tropical conservation KW - understory insectivores KW - Travel KW - Galleries KW - Trees KW - Playback KW - Forests KW - Pasture KW - Reforestation KW - Forest protection KW - Habitat corridors KW - Understory KW - Landscape KW - Habitat KW - Plantations KW - ASW, Costa Rica KW - Tropical environments KW - Priorities KW - Conservation KW - Deforestation KW - D 04040:Ecosystem and Ecology Studies KW - ENA 15:Renewable Resources-Terrestrial UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808630942?accountid=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=Ecological+Applications&rft.atitle=Targeted+reforestation+could+reverse+declines+in+connectivity+for+understory+birds+in+a+tropical+habitat+corridor&rft.au=Fagan%2C+Matthew+E%3BDefries%2C+Ruth+S%3BSesnie%2C+Steven+E%3BArroyo-Mora%2C+J+Pablo%3BChazdon%2C+Robin+L&rft.aulast=Fagan&rft.aufirst=Matthew&rft.date=2016-07-01&rft.volume=26&rft.issue=5&rft.spage=1456&rft.isbn=&rft.btitle=&rft.title=Ecological+Applications&rft.issn=10510761&rft_id=info:doi/10.1890%2F14-2188 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-07-01 N1 - Last updated - 2016-09-29 N1 - SubjectsTermNotLitGenreText - Galleries; Trees; Landscape; Playback; Forests; Habitat; Plantations; Pasture; Reforestation; Conservation; Habitat corridors; Understory; Deforestation; Travel; Tropical environments; Priorities; Forest protection; ASW, Costa Rica DO - http://dx.doi.org/10.1890/14-2188 ER - TY - JOUR T1 - The Influence of Differentially Expressed Tissue-Type Plasminogen Activator in Experimental Autoimmune Encephalomyelitis: Implications for Multiple Sclerosis AN - 1805472171 AB - Tissue type plasminogen activator (t-PA) has been implicated in the development of multiple sclerosis (MS) and in rodent models of experimental autoimmune encephalomyelitis (EAE). We show that levels of t-PA mRNA and activity are increased ~4 fold in the spinal cords of wild-type mice that are mice subjected to EAE. This was also accompanied with a significant increase in the levels of pro-matrix metalloproteinase 9 (pro-MMP-9) and an influx of fibrinogen. We next compared EAE severity in wild-type mice, t-PA-/- mice and T4+ transgenic mice that selectively over-express (~14-fold) mouse t-PA in neurons of the central nervous system. Our results confirm that t-PA deficient mice have an earlier onset and more severe form of EAE. T4+ mice, despite expressing higher levels of endogenous t-PA, manifested a similar rate of onset and neurological severity of EAE. Levels of proMMP-9, and extravasated fibrinogen in spinal cord extracts were increased in mice following EAE onset regardless of the absence or over-expression of t-PA wild-type. Interestingly, MMP-2 levels also increased in spinal cord extracts of T4+ mice following EAE, but not in the other genotypes. Hence, while the absence of t-PA confers a more deleterious form of EAE, neuronal over-expression of t-PA does not overtly protect against this condition with regards to symptom onset or severity of EAE. JF - PLoS One AU - Dahl, Lisa CM AU - Nasa, Zeyad AU - Chung, JieYu AU - Niego, Be'eri AU - Tarlac, Volga AU - Ho, Heidi AU - Galle, Adam AU - Petratos, Steven AU - Lee, Jae Young AU - Alderuccio, Frank AU - Medcalf, Robert L Y1 - 2016/07// PY - 2016 DA - Jul 2016 CY - San Francisco PB - Public Library of Science VL - 11 IS - 7 KW - Sciences: Comprehensive Works KW - Studies KW - Rodents KW - Spinal cord KW - Experiments KW - Pathogenesis KW - Medical research KW - Permeability KW - Brain research KW - Cell adhesion & migration KW - Multiple sclerosis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1805472171?accountid=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=PLoS+One&rft.atitle=The+Influence+of+Differentially+Expressed+Tissue-Type+Plasminogen+Activator+in+Experimental+Autoimmune+Encephalomyelitis%3A+Implications+for+Multiple+Sclerosis&rft.au=Dahl%2C+Lisa+CM%3BNasa%2C+Zeyad%3BChung%2C+JieYu%3BNiego%2C+Be%27eri%3BTarlac%2C+Volga%3BHo%2C+Heidi%3BGalle%2C+Adam%3BPetratos%2C+Steven%3BLee%2C+Jae+Young%3BAlderuccio%2C+Frank%3BMedcalf%2C+Robert+L&rft.aulast=Dahl&rft.aufirst=Lisa&rft.date=2016-07-01&rft.volume=11&rft.issue=7&rft.spage=&rft.isbn=&rft.btitle=&rft.title=PLoS+One&rft.issn=&rft_id=info:doi/10.1371%2Fjournal.pone.0158653 LA - English DB - ProQuest Central; ProQuest Environmental Science Collection N1 - Copyright - © 2016 Dahl et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited: Dahl LC, Nasa Z, Chung J, Niego B, Tarlac V, Ho H, et al. (2016) The Influence of Differentially Expressed Tissue-Type Plasminogen Activator in Experimental Autoimmune Encephalomyelitis: Implications for Multiple Sclerosis. PLoS ONE 11(7): e0158653. doi:10.1371/journal.pone.0158653 N1 - Last updated - 2016-07-23 DO - http://dx.doi.org/10.1371/journal.pone.0158653 ER - TY - JOUR T1 - Thermal properties of Rhea's poles; evidence for a meter-deep unconsolidated subsurface layer AN - 1803778057; 2016-062780 JF - Icarus AU - Howett, C J A AU - Spencer, J R AU - Hurford, T AU - Verbiscer, A AU - Segura, M Y1 - 2016/07/01/ PY - 2016 DA - 2016 Jul 01 SP - 140 EP - 148 PB - Elsevier, New York, NY VL - 272 SN - 0019-1035, 0019-1035 KW - albedo KW - surface properties KW - icy satellites KW - polar regions KW - thermal inertia KW - thermal properties KW - porous materials KW - Rhea Satellite KW - porosity KW - emissivity KW - depth KW - infrared spectra KW - volatiles KW - Cassini-Huygens Mission KW - thermal emission KW - interplanetary comparison KW - Composite Infrared Spectrometer KW - thermomechanical properties KW - unconsolidated materials KW - spectra KW - seasonal variations KW - satellites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803778057?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+of+Rhea%27s+poles%3B+evidence+for+a+meter-deep+unconsolidated+subsurface+layer&rft.au=Howett%2C+C+J+A%3BSpencer%2C+J+R%3BHurford%2C+T%3BVerbiscer%2C+A%3BSegura%2C+M&rft.aulast=Howett&rft.aufirst=C+J&rft.date=2016-07-01&rft.volume=272&rft.issue=&rft.spage=140&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.02.033 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 33 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - albedo; Cassini-Huygens Mission; Composite Infrared Spectrometer; depth; emissivity; icy satellites; infrared spectra; interplanetary comparison; polar regions; porosity; porous materials; Rhea Satellite; satellites; seasonal variations; spectra; surface properties; thermal emission; thermal inertia; thermal properties; thermomechanical properties; unconsolidated materials; volatiles DO - http://dx.doi.org/10.1016/j.icarus.2016.02.033 ER - TY - JOUR T1 - Magma ascent pathways associated with large mountains on Io AN - 1803777590; 2016-062785 JF - Icarus AU - McGovern, Patrick J AU - Kirchoff, Michelle R AU - White, Oliver L AU - Schenk, Paul M Y1 - 2016/07/01/ PY - 2016 DA - 2016 Jul 01 SP - 246 EP - 257 PB - Elsevier, New York, NY VL - 272 SN - 0019-1035, 0019-1035 KW - orientation KW - recycling KW - paterae KW - loading KW - lithosphere KW - magmatism KW - stress KW - resurfacing KW - Io Satellite KW - subsidence KW - Galilean satellites KW - digital terrain models KW - mountains KW - thrust faults KW - volcanism KW - magmas KW - tectonics KW - satellites KW - faults KW - crust KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803777590?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Magma+ascent+pathways+associated+with+large+mountains+on+Io&rft.au=McGovern%2C+Patrick+J%3BKirchoff%2C+Michelle+R%3BWhite%2C+Oliver+L%3BSchenk%2C+Paul+M&rft.aulast=McGovern&rft.aufirst=Patrick&rft.date=2016-07-01&rft.volume=272&rft.issue=&rft.spage=246&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.02.035 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 45 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - crust; digital terrain models; faults; Galilean satellites; Io Satellite; lithosphere; loading; magmas; magmatism; mountains; orientation; paterae; recycling; resurfacing; satellites; stress; subsidence; tectonics; thrust faults; volcanism DO - http://dx.doi.org/10.1016/j.icarus.2016.02.035 ER - TY - JOUR T1 - Re-analysis of previous laboratory phase curves; 2, Connections between opposition effect morphology and spectral features of stony meteorites AN - 1803777549; 2016-062781 JF - Icarus AU - Deau, Estelle AU - Spilker, Linda J AU - Flandes, Alberto Y1 - 2016/07/01/ PY - 2016 DA - 2016 Jul 01 SP - 149 EP - 164 PB - Elsevier, New York, NY VL - 272 SN - 0019-1035, 0019-1035 KW - near-infrared spectra KW - ordinary chondrites KW - opposition effect KW - stony meteorites KW - asteroids KW - optical spectra KW - grain size KW - carbonaceous chondrites KW - porosity KW - meteorites KW - laboratory studies KW - photometry KW - mineral composition KW - ultraviolet spectra KW - spectra KW - chondrites KW - chemical composition KW - reflectance KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803777549?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+2%2C+Connections+between+opposition+effect+morphology+and+spectral+features+of+stony+meteorites&rft.au=Deau%2C+Estelle%3BSpilker%2C+Linda+J%3BFlandes%2C+Alberto&rft.aulast=Deau&rft.aufirst=Estelle&rft.date=2016-07-01&rft.volume=272&rft.issue=&rft.spage=149&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.01.035 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 95 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - asteroids; carbonaceous chondrites; chemical composition; chondrites; grain size; laboratory studies; meteorites; mineral composition; near-infrared spectra; opposition effect; optical spectra; ordinary chondrites; photometry; porosity; reflectance; spectra; stony meteorites; ultraviolet spectra DO - http://dx.doi.org/10.1016/j.icarus.2016.01.035 ER - TY - JOUR T1 - Seasonal and static gravity field of Mars from MGS, Mars Odyssey and MRO radio science AN - 1803774592; 2016-062784 JF - Icarus AU - Genova, Antonio AU - Goossens, Sander AU - Lemoine, Frank G AU - Mazarico, Erwan AU - Neumann, Gregory A AU - Smith, David E AU - Zuber, Maria T Y1 - 2016/07/01/ PY - 2016 DA - 2016 Jul 01 SP - 228 EP - 245 PB - Elsevier, New York, NY VL - 272 SN - 0019-1035, 0019-1035 KW - monitoring KW - free-air anomalies KW - atmosphere KW - Mars Reconnaissance Orbiter KW - Mars KW - Mars Odyssey KW - polar caps KW - tides KW - terrestrial planets KW - spherical harmonic analysis KW - models KW - planets KW - Love number KW - gravity anomalies KW - gravity field KW - topography KW - radio-wave methods KW - Mars Global Surveyor Program KW - MOLA KW - seasonal variations KW - orbital observations KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803774592?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+and+static+gravity+field+of+Mars+from+MGS%2C+Mars+Odyssey+and+MRO+radio+science&rft.au=Genova%2C+Antonio%3BGoossens%2C+Sander%3BLemoine%2C+Frank+G%3BMazarico%2C+Erwan%3BNeumann%2C+Gregory+A%3BSmith%2C+David+E%3BZuber%2C+Maria+T&rft.aulast=Genova&rft.aufirst=Antonio&rft.date=2016-07-01&rft.volume=272&rft.issue=&rft.spage=228&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.02.050 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 88 N1 - PubXState - NY N1 - Document feature - illus. incl. 4 tables, sketch maps N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - atmosphere; free-air anomalies; gravity anomalies; gravity field; Love number; Mars; Mars Global Surveyor Program; Mars Odyssey; Mars Reconnaissance Orbiter; models; MOLA; monitoring; orbital observations; planets; polar caps; radio-wave methods; seasonal variations; spherical harmonic analysis; terrestrial planets; tides; topography DO - http://dx.doi.org/10.1016/j.icarus.2016.02.050 ER - TY - JOUR T1 - Refractory and semi-volatile organics at the surface of comet 67P/Churyumov-Gerasimenko; insights from the VIRTIS/Rosetta imaging spectrometer AN - 1803774142; 2016-062774 JF - Icarus AU - Quirico, Eric AU - Moroz, L V AU - Schmitt, B AU - Arnold, G AU - Faure, M AU - Beck, P AU - Bonal, L AU - Ciarniello, Mauro AU - Capaccioni, Fabrizio AU - Filcchione, G AU - Erard, Stephane AU - Leyrat, C AU - Bockelee-Morvan, D AU - Zinzi, A AU - Palomba, E AU - Drossart, P AU - Tosi, F AU - Capria, M T AU - De Sanctis, Maria Cristina AU - Raponi, A AU - Fonti, S AU - Mancarella, F AU - Orofino, V AU - Barucci, Antonella AU - Blecka, M I AU - Carlson, R AU - Despan, Daniela AU - Faure, A AU - Fornasier, S AU - Gudipati, M S AU - Longobardo, A AU - Markus, K AU - Mennella, V AU - Merlin, F AU - Piccioni, G AU - Rousseau, B AU - Taylor, F Y1 - 2016/07/01/ PY - 2016 DA - 2016 Jul 01 SP - 32 EP - 47 PB - Elsevier, New York, NY VL - 272 SN - 0019-1035, 0019-1035 KW - albedo KW - spectrophotometry KW - imagery KW - irradiation KW - Visible and Infrared Thermal Imaging Spectrometer KW - refractory materials KW - solar wind KW - VIRTIS KW - infrared spectra KW - laboratory studies KW - photometry KW - alloys KW - spectra KW - Churyumov-Gerasimenko Comet KW - opaque minerals KW - carbonaceous composition KW - photochemistry KW - volatiles KW - organic compounds KW - Rosetta Mission KW - comets KW - photolysis KW - natural analogs KW - hydrocarbons KW - polycyclic aromatic hydrocarbons KW - sulfides KW - reflectance KW - aromatic hydrocarbons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803774142?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Refractory+and+semi-volatile+organics+at+the+surface+of+comet+67P%2FChuryumov-Gerasimenko%3B+insights+from+the+VIRTIS%2FRosetta+imaging+spectrometer&rft.au=Quirico%2C+Eric%3BMoroz%2C+L+V%3BSchmitt%2C+B%3BArnold%2C+G%3BFaure%2C+M%3BBeck%2C+P%3BBonal%2C+L%3BCiarniello%2C+Mauro%3BCapaccioni%2C+Fabrizio%3BFilcchione%2C+G%3BErard%2C+Stephane%3BLeyrat%2C+C%3BBockelee-Morvan%2C+D%3BZinzi%2C+A%3BPalomba%2C+E%3BDrossart%2C+P%3BTosi%2C+F%3BCapria%2C+M+T%3BDe+Sanctis%2C+Maria+Cristina%3BRaponi%2C+A%3BFonti%2C+S%3BMancarella%2C+F%3BOrofino%2C+V%3BBarucci%2C+Antonella%3BBlecka%2C+M+I%3BCarlson%2C+R%3BDespan%2C+Daniela%3BFaure%2C+A%3BFornasier%2C+S%3BGudipati%2C+M+S%3BLongobardo%2C+A%3BMarkus%2C+K%3BMennella%2C+V%3BMerlin%2C+F%3BPiccioni%2C+G%3BRousseau%2C+B%3BTaylor%2C+F&rft.aulast=Quirico&rft.aufirst=Eric&rft.date=2016-07-01&rft.volume=272&rft.issue=&rft.spage=32&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.02.028 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 82 N1 - PubXState - NY N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2016-11-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - albedo; alloys; aromatic hydrocarbons; carbonaceous composition; Churyumov-Gerasimenko Comet; comets; hydrocarbons; imagery; infrared spectra; irradiation; laboratory studies; natural analogs; opaque minerals; organic compounds; photochemistry; photolysis; photometry; polycyclic aromatic hydrocarbons; reflectance; refractory materials; Rosetta Mission; solar wind; spectra; spectrophotometry; sulfides; VIRTIS; Visible and Infrared Thermal Imaging Spectrometer; volatiles DO - http://dx.doi.org/10.1016/j.icarus.2016.02.028 ER - TY - JOUR T1 - Lithologic variation within bright material on Vesta revealed by linear spectral unmixing AN - 1803773954; 2016-062773 JF - Icarus AU - Zambon, Francesca AU - Tosi, F AU - Carli, Cristian AU - De Sanctis, Maria Cristina AU - Blewett, D T AU - Palomba, E AU - Longobardo, A AU - Frigeri, A AU - Ammannito, E AU - Russell, C T AU - Raymond, C A Y1 - 2016/07/01/ PY - 2016 DA - 2016 Jul 01 SP - 16 EP - 31 PB - Elsevier, New York, NY VL - 272 SN - 0019-1035, 0019-1035 KW - silicates KW - albedo KW - stony meteorites KW - asteroids KW - Bellicia KW - optical spectra KW - olivine group KW - Dawn Mission KW - infrared spectra KW - brightness KW - meteorites KW - Arruntia KW - pyroxene group KW - howardite KW - mixing KW - olivine KW - orthosilicates KW - spectra KW - opaque minerals KW - chain silicates KW - Vesta Asteroid KW - HED meteorites KW - diogenite KW - achondrites KW - nesosilicates KW - detection KW - eucrite KW - reflectance KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803773954?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Lithologic+variation+within+bright+material+on+Vesta+revealed+by+linear+spectral+unmixing&rft.au=Zambon%2C+Francesca%3BTosi%2C+F%3BCarli%2C+Cristian%3BDe+Sanctis%2C+Maria+Cristina%3BBlewett%2C+D+T%3BPalomba%2C+E%3BLongobardo%2C+A%3BFrigeri%2C+A%3BAmmannito%2C+E%3BRussell%2C+C+T%3BRaymond%2C+C+A&rft.aulast=Zambon&rft.aufirst=Francesca&rft.date=2016-07-01&rft.volume=272&rft.issue=&rft.spage=16&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.01.009 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 79 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2016-07-14 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - achondrites; albedo; Arruntia; asteroids; Bellicia; brightness; chain silicates; Dawn Mission; detection; diogenite; eucrite; HED meteorites; howardite; infrared spectra; meteorites; mixing; nesosilicates; olivine; olivine group; opaque minerals; optical spectra; orthosilicates; pyroxene group; reflectance; silicates; spectra; stony meteorites; Vesta Asteroid DO - http://dx.doi.org/10.1016/j.icarus.2016.01.009 ER - TY - JOUR T1 - Error distribution modelling of satellite soil moisture measurements for hydrological applications AN - 1819895093; 2016-079102 AB - Satellite-based soil moisture data accuracies are of important concerns by hydrologists because they could significantly influence hydrological modelling uncertainty. Without proper quantification of their uncertainties, it is difficult to optimize the hydrological modelling system and make robust decisions. Currently, the satellite soil moisture data uncertainty has been limited to summary statistics with the validations mainly from the in situ measurements. This study attempts to build the first error distribution model with additional higher-order uncertainty modelling for satellite soil moisture observations. The methodology is demonstrated by a case study using the Soil Moisture and Ocean Salinity satellite soil moisture observations. The validation is based on soil moisture estimates from hydrological modelling, which is more relevant to the intended data use than the in situ measurements. Four probability distributions have been explored to find suitable error distribution curves using the statistical tests and bootstrapping resampling technique. General extreme value is identified as the most suitable one among all the curves. The error distribution model is still in its infant stage, which ignores spatial and temporal correlations, and nonstationarity. Further improvements should be carried out by the hydrological community by expanding the methodology to a wide range of satellite soil moisture data using different hydrological models. Copyright Copyright 2016 John Wiley & Sons, Ltd. JF - Hydrological Processes AU - Zhuo, Lu AU - Dai, Qiang AU - Islam, Tanvir AU - Han, Dawei Y1 - 2016/06/30/ PY - 2016 DA - 2016 Jun 30 SP - 2223 EP - 2236 PB - Wiley-Blackwell, New York, NY VL - 30 IS - 13 SN - 0885-6087, 0885-6087 KW - United States KW - soils KW - hydrology KW - Illinois KW - moisture KW - statistical analysis KW - satellite methods KW - observations KW - models KW - errors KW - infiltration KW - Vermilion River basin KW - water content KW - uncertainty KW - central Illinois KW - remote sensing KW - 21:Hydrogeology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819895093?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrological+Processes&rft.atitle=Error+distribution+modelling+of+satellite+soil+moisture+measurements+for+hydrological+applications&rft.au=Zhuo%2C+Lu%3BDai%2C+Qiang%3BIslam%2C+Tanvir%3BHan%2C+Dawei&rft.aulast=Zhuo&rft.aufirst=Lu&rft.date=2016-06-30&rft.volume=30&rft.issue=13&rft.spage=2223&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.10789 L2 - http://www3.interscience.wiley.com/cgi-bin/jhome/4125 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 70 N1 - PubXState - NY N1 - Document feature - illus. incl. 5 tables, sketch map N1 - Last updated - 2016-11-17 N1 - SubjectsTermNotLitGenreText - central Illinois; errors; hydrology; Illinois; infiltration; models; moisture; observations; remote sensing; satellite methods; soils; statistical analysis; uncertainty; United States; Vermilion River basin; water content DO - http://dx.doi.org/10.1002/hyp.10789 ER - TY - JOUR T1 - Interannual similarity in the Martian atmosphere during the dust storm season AN - 1815668060; 2016-076410 AB - We find that during the dusty season on Mars (southern spring and summer) of years without a global dust storm there are three large regional-scale dust storms. The storms are labeled A, B, and C in seasonal order. This classification is based on examining the zonal mean 50 Pa ( approximately 25 km) daytime temperature retrievals from TES/MGS and MCS/MRO over 6 Mars Years. Regional-scale storms are defined as events where the temperature exceeds 200 K. Examining the MCS dust field at 50 Pa indicates that warming in the Southern Hemisphere is dominated by direct heating, while northern high latitude warming is a dynamical response. A storms are springtime planet encircling Southern Hemisphere events. B storms are southern polar events that begin near perihelion and last through the solstice. C storms are southern summertime events starting well after the end of the B storm. C storms show the most interannual variability. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Kass, David M AU - Kleinboehl, A AU - McCleese, D J AU - Schofield, J T AU - Smith, M D Y1 - 2016/06/28/ PY - 2016 DA - 2016 Jun 28 SP - 6111 EP - 6118 PB - American Geophysical Union, Washington, DC VL - 43 IS - 12 SN - 0094-8276, 0094-8276 KW - data processing KW - Mars KW - interplanetary dust KW - climate change KW - temperature KW - emission spectra KW - infrared methods KW - radiometers KW - circulation KW - thermal emission KW - spectra KW - diurnal variations KW - boundary layer KW - dust storms KW - annual variations KW - THEMIS KW - global KW - geophysical methods KW - Mars Climate Sounder KW - atmosphere KW - Mars Reconnaissance Orbiter KW - terrestrial planets KW - Southern Hemisphere KW - planets KW - cosmic dust KW - optical properties KW - classification KW - heating KW - Northern Hemisphere KW - data retrieval KW - seasonal variations KW - image analysis KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815668060?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Interannual+similarity+in+the+Martian+atmosphere+during+the+dust+storm+season&rft.au=Kass%2C+David+M%3BKleinboehl%2C+A%3BMcCleese%2C+D+J%3BSchofield%2C+J+T%3BSmith%2C+M+D&rft.aulast=Kass&rft.aufirst=David&rft.date=2016-06-28&rft.volume=43&rft.issue=12&rft.spage=6111&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2016GL068978 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 35 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2016-09-01 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - annual variations; atmosphere; boundary layer; circulation; classification; climate change; cosmic dust; data processing; data retrieval; diurnal variations; dust storms; emission spectra; geophysical methods; global; heating; image analysis; infrared methods; interplanetary dust; Mars; Mars Climate Sounder; Mars Reconnaissance Orbiter; Northern Hemisphere; optical properties; planets; radiometers; seasonal variations; Southern Hemisphere; spectra; temperature; terrestrial planets; THEMIS; thermal emission DO - http://dx.doi.org/10.1002/2016GL068978 ER - TY - JOUR T1 - Meteoritic influence on sodium and potassium abundance in the lunar exosphere measured by LADEE AN - 1815667998; 2016-076408 AB - The Lunar Atmosphere and Dust Environment Explorer (LADEE) orbited the Moon for approximately 6 months, taking data with the Lunar Dust Experiment (LDEX), Ultraviolet-Visible Spectrometer (UVS), and Neutral Mass Spectrometer (NMS). Here we compare coincident LDEX measurements of meteoritic influx to exospheric column densities of Na and K derived by UVS. We report a strong correlation of exospheric potassium and meteoroid ejecta during the Geminids meteoroid shower, exhibiting a much stronger response than sodium. With the exception of the Geminids, we find a weak correlation between the sporadic meteoroid influx as measured by LDEX and exospheric density as measured by UVS. Abstract Copyright (2016), . The Authors. JF - Geophysical Research Letters AU - Szalay, Jamey R AU - Horanyi, Mihaly AU - Colaprete, Anthony AU - Sarantos, Menelaos Y1 - 2016/06/28/ PY - 2016 DA - 2016 Jun 28 SP - 6096 EP - 6102 PB - American Geophysical Union, Washington, DC VL - 43 IS - 12 SN - 0094-8276, 0094-8276 KW - concentration KW - Moon KW - optical spectra KW - alkali metals KW - mass spectra KW - atmosphere KW - LADEE KW - sodium KW - meteoroids KW - impacts KW - satellite methods KW - measurement KW - exosphere KW - cosmic dust KW - photoionization KW - metals KW - potassium KW - ultraviolet spectra KW - spectra KW - Geminids meteor shower KW - LDEX KW - instruments KW - remote sensing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815667998?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Meteoritic+influence+on+sodium+and+potassium+abundance+in+the+lunar+exosphere+measured+by+LADEE&rft.au=Szalay%2C+Jamey+R%3BHoranyi%2C+Mihaly%3BColaprete%2C+Anthony%3BSarantos%2C+Menelaos&rft.aulast=Szalay&rft.aufirst=Jamey&rft.date=2016-06-28&rft.volume=43&rft.issue=12&rft.spage=6096&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2016GL069541 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 26 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2016-11-17 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - alkali metals; atmosphere; concentration; cosmic dust; exosphere; Geminids meteor shower; impacts; instruments; LADEE; LDEX; mass spectra; measurement; metals; meteoroids; Moon; optical spectra; photoionization; potassium; remote sensing; satellite methods; sodium; spectra; ultraviolet spectra DO - http://dx.doi.org/10.1002/2016GL069541 ER - TY - JOUR T1 - Gastric lipoma: an unusual cause of dyspeptic symptoms AN - 1799329098 AB - Gastric lipomas are rare tumours accounting for 2-3% of all benign gastric tumours. These are usually submucosal in origin but in rare cases may be subserosal in origin. Although a majority of gastric lipomas are asymptomatic and usually detected incidentally, occasionally these can cause abdominal pain, dyspeptic disorders, obstruction, invagination and haemorrhages. In the literature, only 200 cases of gastric lipomas have been reported so far. We report a case of a 56-year-old female with a submucosal symptomatic gastric lipoma presenting with disabling dyspeptic symptoms. JF - BMJ Case Reports AU - Nasa, Mukesh AU - Choksey, Ajay AU - Phadke, Aniruddha AU - Sawant, Prabha Y1 - 2016/06/22/ PY - 2016 DA - 2016 Jun 22 CY - London PB - BMJ Publishing Group LTD VL - 2016 KW - Medical Sciences KW - Abdomen KW - Rodents KW - Stomach KW - Pain KW - Tumors KW - Medical imaging KW - Constipation KW - Vomiting KW - Laparoscopy KW - Endoscopy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1799329098?accountid=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=BMJ+Case+Reports&rft.atitle=Gastric+lipoma%3A+an+unusual+cause+of+dyspeptic+symptoms&rft.au=Nasa%2C+Mukesh%3BChoksey%2C+Ajay%3BPhadke%2C+Aniruddha%3BSawant%2C+Prabha&rft.aulast=Nasa&rft.aufirst=Mukesh&rft.date=2016-06-22&rft.volume=2016&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=BMJ+Case+Reports&rft.issn=&rft_id=info:doi/10.1136%2Fbcr-2016-215297 LA - English DB - ProQuest Central N1 - Copyright - Copyright: 2016 2016 BMJ Publishing Group Ltd N1 - Last updated - 2016-07-06 DO - http://dx.doi.org/10.1136/bcr-2016-215297 ER - TY - NEWS T1 - NASA's Operation IceBridge Completes 2016 Arctic Spring Campaign AN - 1795747864 JF - UPI Space Daily AU - Maria-Jose Vinas for NASA Earth News Y1 - 2016/06/12/ PY - 2016 DA - 2016 Jun 12 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1795747864?accountid=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+Operation+IceBridge+Completes+2016+Arctic+Spring+Campaign&rft.au=Maria-Jose+Vinas+for+NASA+Earth+News&rft.aulast=Maria-Jose+Vinas+for+NASA+Earth+News&rft.aufirst=&rft.date=2016-06-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=UPI+Space+Daily&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright (c) by United Press International. All Rights Reserved. N1 - Last updated - 2016-06-12 ER - TY - JOUR T1 - Convection in a volatile nitrogen-ice-rich layer drives Pluto's geological vigour AN - 1800392127; 2016-056607 JF - Nature (London) AU - McKinnon, William B AU - Nimmo, Francis AU - Wong, Teresa AU - Schenk, Paul M AU - White, Oliver L AU - Roberts, J H AU - Moore, J M AU - Spencer, J R AU - Howard, A D AU - Umurhan, O M AU - Stern, S A AU - Weaver, H A AU - Olkin, C B AU - Young, L A AU - Smith, K E Y1 - 2016/06/02/ PY - 2016 DA - 2016 Jun 02 SP - 82 EP - 85 PB - Macmillan Journals, London VL - 534 IS - 7605 SN - 0028-0836, 0028-0836 KW - albedo KW - methane KW - numerical models KW - impact features KW - Kuiper Belt KW - aliphatic hydrocarbons KW - alkanes KW - convection KW - dwarf planets KW - nitrogen KW - models KW - volatiles KW - organic compounds KW - ice KW - heat flow KW - surface features KW - hydrocarbons KW - interplanetary comparison KW - impact craters KW - Sputnik Planum KW - Pluto KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800392127?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Convection+in+a+volatile+nitrogen-ice-rich+layer+drives+Pluto%27s+geological+vigour&rft.au=McKinnon%2C+William+B%3BNimmo%2C+Francis%3BWong%2C+Teresa%3BSchenk%2C+Paul+M%3BWhite%2C+Oliver+L%3BRoberts%2C+J+H%3BMoore%2C+J+M%3BSpencer%2C+J+R%3BHoward%2C+A+D%3BUmurhan%2C+O+M%3BStern%2C+S+A%3BWeaver%2C+H+A%3BOlkin%2C+C+B%3BYoung%2C+L+A%3BSmith%2C+K+E&rft.aulast=McKinnon&rft.aufirst=William&rft.date=2016-06-02&rft.volume=534&rft.issue=7605&rft.spage=82&rft.isbn=&rft.btitle=&rft.title=Nature+%28London%29&rft.issn=00280836&rft_id=info:doi/10.1038%2Fnature18289 L2 - http://www.nature.com/nature/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 26 N1 - Document feature - illus. N1 - Last updated - 2016-06-30 N1 - CODEN - NATUAS N1 - SubjectsTermNotLitGenreText - albedo; aliphatic hydrocarbons; alkanes; convection; dwarf planets; heat flow; hydrocarbons; ice; impact craters; impact features; interplanetary comparison; Kuiper Belt; methane; models; nitrogen; numerical models; organic compounds; Pluto; Sputnik Planum; surface features; volatiles DO - http://dx.doi.org/10.1038/nature18289 ER - TY - JOUR T1 - High-resolution modeling of human and climate impacts on global water resources AN - 1832657871; 780562-14 AB - A number of global hydrological models [GHMs) have been developed in recent decades in order to understand the impacts of climate variability and human activities on water resources availability. The spatial resolution of GHMs is mostly constrained at a 0.5 degrees by 0.5 degrees grid [ approximately 50km by approximately 50km at the equator). However, for many of the water-related problems facing society, the current spatial scale of GHMs is insufficient to provide locally relevant information. Here using the PCR-GLOBWB model we present for the first time an analysis of human and climate impacts on global water resources at a 0.1 degrees by 0.1 degrees grid [ approximately 10km by approximately 10km at the equator) in order to depict more precisely regional variability in water availability and use. Most of the model input data (topography, vegetation, soil properties, routing, human water use) have been parameterized at a 0.1 degrees global grid and feature a distinctively higher resolution. Distinct from many other GHMs, PCR-GLOBWB includes groundwater representation and simulates groundwater heads and lateral groundwater flows based on MODFLOW with existing geohydrological information. This study shows that global hydrological simulations at higher spatial resolutions are feasible for multi-decadal to century periods. Abstract Copyright (2016), . The Authors. JF - Journal of Advances in Modeling Earth Systems AU - Wada, Yoshihide AU - de Graaf, Inge E M AU - van Beek, Ludovicus P H Y1 - 2016/06// PY - 2016 DA - June 2016 SP - 735 EP - 763 PB - Wiley for Institute of Global Environment and Society, Calverton, MD VL - 8 IS - 2 KW - scale factor KW - water storage KW - rivers and streams KW - water management KW - GRACE KW - water stress index KW - simulation KW - climate change KW - observations KW - irrigation KW - ground water KW - spatial variations KW - levels KW - drainage basins KW - industry KW - discharge KW - depletion KW - water use KW - water recovery KW - hydrology KW - high-resolution methods KW - water supply KW - monthly variations KW - annual variations KW - cartography KW - base flow KW - human activity KW - global KW - surface water KW - statistical analysis KW - agriculture KW - MODFLOW KW - water balance KW - aquifers KW - models KW - water table KW - recharge KW - hydraulic head KW - transmissivity KW - streamflow KW - regional KW - PCR-GLOBWB KW - water resources KW - accuracy KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832657871?accountid=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+Advances+in+Modeling+Earth+Systems&rft.atitle=High-resolution+modeling+of+human+and+climate+impacts+on+global+water+resources&rft.au=Wada%2C+Yoshihide%3Bde+Graaf%2C+Inge+E+M%3Bvan+Beek%2C+Ludovicus+P+H&rft.aulast=Wada&rft.aufirst=Yoshihide&rft.date=2016-06-01&rft.volume=8&rft.issue=2&rft.spage=735&rft.isbn=&rft.btitle=&rft.title=Journal+of+Advances+in+Modeling+Earth+Systems&rft.issn=1942-2466&rft_id=info:doi/10.1002%2F2015MS000618 L2 - http://agupubs.onlinelibrary.wiley.com/agu/journal/10.1002/(ISSN)1942-2466/ 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 - 98 N1 - PubXState - MD N1 - Document feature - illus. incl. 3 tables, sketch maps N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - accuracy; agriculture; annual variations; aquifers; base flow; cartography; climate change; depletion; discharge; drainage basins; global; GRACE; ground water; high-resolution methods; human activity; hydraulic head; hydrology; industry; irrigation; levels; models; MODFLOW; monthly variations; observations; PCR-GLOBWB; recharge; regional; rivers and streams; scale factor; simulation; spatial variations; statistical analysis; streamflow; surface water; transmissivity; water balance; water management; water recovery; water resources; water storage; water stress index; water supply; water table; water use DO - http://dx.doi.org/10.1002/2015MS000618 ER - TY - JOUR T1 - An automated, open-source pipeline for mass production of digital elevation models (DEMs) from very-high-resolution commercial stereo satellite imagery AN - 1832606068; 773846-9 AB - We adapted the automated, open source NASA Ames Stereo Pipeline (ASP) to generate digital elevation models (DEMs) and orthoimages from very-high-resolution (VHR) commercial imagery of the Earth. These modifications include support for rigorous and rational polynomial coefficient (RPC) sensor models, sensor geometry correction, bundle adjustment, point cloud co-registration, and significant improvements to the ASP code base. We outline a processing workflow for approximately 0.5 m ground sample distance (GSD) DigitalGlobe WorldView-1 and WorldView-2 along-track stereo image data, with an overview of ASP capabilities, an evaluation of ASP correlator options, benchmark test results, and two case studies of DEM accuracy. Output DEM products are posted at approximately 2 m with direct geolocation accuracy of <5.0 m CE90/LE90. An automated iterative closest-point (ICP) co-registration tool reduces absolute vertical and horizontal error to <0.5 m where appropriate ground-control data are available, with observed standard deviation of approximately 0.1-0.5 m for overlapping, co-registered DEMs (n = 14, 17). While ASP can be used to process individual stereo pairs on a local workstation, the methods presented here were developed for large-scale batch processing in a high-performance computing environment. We are leveraging these resources to produce dense time series and regional mosaics for the Earth's polar regions. Abstract Copyright (2016) Elsevier, B.V. JF - ISPRS Journal of Photogrammetry and Remote Sensing AU - Shean, David E AU - Alexandrov, Oleg AU - Moratto, Zachary M AU - Smith, Benjamin E AU - Joughin, Ian R AU - Porter, Claire AU - Morin, Paul Y1 - 2016/06// PY - 2016 DA - June 2016 SP - 101 EP - 117 PB - Elsevier, Amsterdam VL - 116 SN - 0924-2716, 0924-2716 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832606068?accountid=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=ISPRS+Journal+of+Photogrammetry+and+Remote+Sensing&rft.atitle=An+automated%2C+open-source+pipeline+for+mass+production+of+digital+elevation+models+%28DEMs%29+from+very-high-resolution+commercial+stereo+satellite+imagery&rft.au=Shean%2C+David+E%3BAlexandrov%2C+Oleg%3BMoratto%2C+Zachary+M%3BSmith%2C+Benjamin+E%3BJoughin%2C+Ian+R%3BPorter%2C+Claire%3BMorin%2C+Paul&rft.aulast=Shean&rft.aufirst=David&rft.date=2016-06-01&rft.volume=116&rft.issue=&rft.spage=101&rft.isbn=&rft.btitle=&rft.title=ISPRS+Journal+of+Photogrammetry+and+Remote+Sensing&rft.issn=09242716&rft_id=info:doi/10.1016%2Fj.isprsjprs.2016.03.012 L2 - http://www.sciencedirect.com/science/journal/09242716 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 CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Last updated - 2017-01-24 N1 - CODEN - PTGMAQ DO - http://dx.doi.org/10.1016/j.isprsjprs.2016.03.012 ER - TY - JOUR T1 - An inverse modeling study of circulation in the eastern Bering Sea during 2007-2010 AN - 1828849948; 2016-087046 AB - A two-way nested 4d-variational data assimilation system is implemented in the Eastern Bering Sea (EBS) to investigate changes in circulation and thermodynamic state for a 3.8 year period. Assimilated observations include data from 19 moorings deployed on the shelf and in the Bering Strait, 1705 hydrographic stations occupied during eight surveys, and remotely sensed sea surface temperature and sea surface height (SSH) data. Validation of the presented 4dVar reanalysis against the output of two sequential data-assimilative systems (the Bering Ecosystem Study ice-ocean Modeling and Assimilation System (BESTMAS) and the Arctic Cap Nowcast-Forecast System (ACNFS)) has shown that the product is more consistent with the observed transports in the Bering Strait and in the EBS interior both in terms of their magnitude and time variability. Analysis of the data-optimized solution quantifies a sequence of wind-forced events that resulted in the anomalous heat and freshwater transports through the Bering Strait, including a 28 day long flow reversal that occurred in November 2009 and carried Siberian Coastal Current water down to the Gulf of Anadyr. Lagrangian study of the Arctic-bound Pacific waters indicates the extreme importance of the cross-shelf exchange along the path of the Bering Slope Current and quantifies the spectrum of residence times for the waters entering EBS through Unimak Pass and through Aleutian passages. Residence times in the EBS cold pool are diagnosed to be 2-3 times longer than those in the surrounding waters. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Oceans AU - Panteleev, Gleb AU - Yaremchuk, Max AU - Francis, Oceana AU - Stabeno, Phyllis J AU - Weingartner, T AU - Zhang, J Y1 - 2016/06// PY - 2016 DA - June 2016 SP - 3970 EP - 3989 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 121 IS - 6 SN - 2169-9275, 2169-9275 KW - ocean circulation KW - sea water KW - numerical models KW - sea surface water KW - Bering Sea KW - fresh water KW - altimetry KW - salinity KW - marine transport KW - temperature KW - eastern Bering Sea KW - thermohaline circulation KW - transport KW - North Pacific KW - residence time KW - Pacific Ocean KW - digital simulation KW - velocity KW - sea-surface temperature KW - 07:Oceanography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1828849948?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=An+inverse+modeling+study+of+circulation+in+the+eastern+Bering+Sea+during+2007-2010&rft.au=Panteleev%2C+Gleb%3BYaremchuk%2C+Max%3BFrancis%2C+Oceana%3BStabeno%2C+Phyllis+J%3BWeingartner%2C+T%3BZhang%2C+J&rft.aulast=Panteleev&rft.aufirst=Gleb&rft.date=2016-06-01&rft.volume=121&rft.issue=6&rft.spage=3970&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Oceans&rft.issn=21699275&rft_id=info:doi/10.1002%2F2015JC011287 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 58 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table, sketch map N1 - Last updated - 2016-10-25 N1 - SubjectsTermNotLitGenreText - altimetry; Bering Sea; digital simulation; eastern Bering Sea; fresh water; marine transport; North Pacific; numerical models; ocean circulation; Pacific Ocean; residence time; salinity; sea surface water; sea water; sea-surface temperature; temperature; thermohaline circulation; transport; velocity DO - http://dx.doi.org/10.1002/2015JC011287 ER - TY - JOUR T1 - Field and experimental constraints on the rheology of arc basaltic lavas; the January 2014 eruption of Pacaya (Guatemala) AN - 1828846940; 2016-086728 AB - We estimated the rheology of an active basaltic lava flow in the field, and compared it with experimental measurements carried out in the laboratory. In the field we mapped, sampled, and recorded videos of the 2014 flow on the southern flank of Pacaya, Guatemala. Velocimetry data extracted from videos allowed us to determine that lava traveled at approximately 2.8 m/s on the steep approximately 45 degrees slope 50 m from the vent, while 550 m further downflow it was moving at only approximately 0.3 m/s on a approximately 4 degrees slope. Estimates of effective viscosity based on Jeffreys' equation increased from approximately 7600 Pa s near the vent to approximately 28,000 Pa s downflow. In the laboratory, we measured the viscosity of a representative lava composition using a concentric cylinder viscometer, at five different temperatures between 1234 and 1199 degrees C, with crystallinity increasing from 0.1 to 40 vol%. The rheological data were best fit by power law equations, with the flow index decreasing as crystal fraction increased, and no detectable yield strength. Although field-based estimates are based on lava characterized by a lower temperature, higher crystal and bubble fraction, and with a more complex petrographic texture, field estimates and laboratory measurements are mutually consistent and both indicate shear-thinning behavior. The complementary field and laboratory data sets allowed us to isolate the effects of different factors in determining the rheological evolution of the 2014 Pacaya flows. We assess the contributions of cooling, crystallization, and changing ground slope to the 3.7-fold increase in effective viscosity observed in the field over 550 m, and conclude that decreasing slope is the single most important factor over that distance. It follows that the complex relations between slope, flow velocity, and non-Newtonian lava rheology need to be incorporated into models of lava flow emplacement. Copyright 2016 Springer-Verlag Berlin Heidelberg JF - Bulletin of Volcanology AU - Soldati, Arianna AU - Sehlke, A AU - Chigna, G AU - Whittington, A Y1 - 2016/06// PY - 2016 DA - June 2016 EP - Article 43 PB - Springer International [for the] International Association of Volcanology and Chemistry of the Earth's Interior (IAVCEI), Heidelberg VL - 78 IS - 6 SN - 0258-8900, 0258-8900 KW - experimental studies KW - lava flows KW - numerical analysis KW - Guatemala KW - bubbles KW - techniques KW - equations KW - Pacaya KW - measurement KW - viscosity KW - lava KW - rheology KW - eruptions KW - volcanoes KW - velocity KW - basaltic composition KW - Central America KW - instruments KW - field studies KW - 24:Quaternary geology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1828846940?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Bulletin+of+Volcanology&rft.atitle=Field+and+experimental+constraints+on+the+rheology+of+arc+basaltic+lavas%3B+the+January+2014+eruption+of+Pacaya+%28Guatemala%29&rft.au=Soldati%2C+Arianna%3BSehlke%2C+A%3BChigna%2C+G%3BWhittington%2C+A&rft.aulast=Soldati&rft.aufirst=Arianna&rft.date=2016-06-01&rft.volume=78&rft.issue=6&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Bulletin+of+Volcanology&rft.issn=02588900&rft_id=info:doi/10.1007%2Fs00445-016-1031-6 L2 - http://www.springerlink.com/(1k1tfmmpjinass550lg0zy55)/app/home/journal.asp?referrer=parent&backto=linkingpublicationresults,1:100402,1 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by Springer Verlag, Berlin, Federal Republic of Germany N1 - Date revised - 2016-01-01 N1 - Number of references - 61 N1 - Document feature - illus. incl. 7 tables, sketch map N1 - Last updated - 2016-10-25 N1 - CODEN - BUVOEW N1 - SubjectsTermNotLitGenreText - basaltic composition; bubbles; Central America; equations; eruptions; experimental studies; field studies; Guatemala; instruments; lava; lava flows; measurement; numerical analysis; Pacaya; rheology; techniques; velocity; viscosity; volcanoes DO - http://dx.doi.org/10.1007/s00445-016-1031-6 ER - TY - JOUR T1 - Spatial scales of optical variability in the coastal ocean; implications for remote sensing and in situ sampling AN - 1828846220; 2016-087058 AB - Use of ocean color remote sensing to understand the effects of environmental changes and anthropogenic activities on estuarine and coastal waters requires the capability to measure and track optically detectable complex biogeochemical processes. An important remote sensor design consideration is the minimum spatial resolution required to resolve key ocean features of physical and biological significance. The spatial scale of variability in optical properties of coastal waters has been investigated using continuous, along-track measurements collected using instruments deployed from ships, aircraft, and satellites. We defined the average coefficient of variance, CV (sub a) , within an image pixel as the primary statistical measure of subpixel variability and investigated how CV (sub a) changes as a function of the Ground Sampling Distance (GSD). In general, d CV (sub a) /dGSD is positive, indicating that the subpixel variability increases with GSD. The relationship between CV (sub a) and GSD is generally nonlinear and the greatest rate of change occurs at small spatial scales. Points of distinct transition in the relationship between CV (sub a) and GSD are evident between 75 and 600 m, varying depending on the location and the optical parameter, and representing the GSD above which most of the spatial variability due to small-scale features is subsumed within a pixel. At GSDs greater than the transition point, most of the small-scale variability occurs at subpixel scales and, therefore, cannot be resolved. On average, the transition GSD is around 200 m. The results have application in both sensor design and in situ sampling strategy in support of coastal remote sensing operations. Abstract Copyright Published 2016. This article is a U.S. Government work and is in the public domain in the USA. JF - Journal of Geophysical Research: Oceans AU - Moses, Wesley J AU - Ackleson, Steven G AU - Hair, Johnathan W AU - Hostetler, Chris A AU - Miller, W David Y1 - 2016/06// PY - 2016 DA - June 2016 SP - 4194 EP - 4208 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 121 IS - 6 SN - 2169-9275, 2169-9275 KW - scale factor KW - digital data KW - sea water KW - laser methods KW - satellite methods KW - case studies KW - spatial variations KW - optical properties KW - lidar methods KW - sampling KW - coastal environment KW - estuarine environment KW - reflectance KW - world ocean KW - remote sensing KW - airborne methods KW - 07:Oceanography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1828846220?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Spatial+scales+of+optical+variability+in+the+coastal+ocean%3B+implications+for+remote+sensing+and+in+situ+sampling&rft.au=Moses%2C+Wesley+J%3BAckleson%2C+Steven+G%3BHair%2C+Johnathan+W%3BHostetler%2C+Chris+A%3BMiller%2C+W+David&rft.aulast=Moses&rft.aufirst=Wesley&rft.date=2016-06-01&rft.volume=121&rft.issue=6&rft.spage=4194&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Oceans&rft.issn=21699275&rft_id=info:doi/10.1002%2F2016JC011767 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 46 N1 - PubXState - DC N1 - Document feature - illus. incl. 4 tables, sketch maps N1 - Last updated - 2016-10-25 N1 - SubjectsTermNotLitGenreText - airborne methods; case studies; coastal environment; digital data; estuarine environment; laser methods; lidar methods; optical properties; reflectance; remote sensing; sampling; satellite methods; scale factor; sea water; spatial variations; world ocean DO - http://dx.doi.org/10.1002/2016JC011767 ER - TY - JOUR T1 - Tidal disruption of Phobos as the cause of surface fractures AN - 1819896236; 2016-079127 AB - Phobos, the innermost satellite of Mars, displays an extensive system of grooves that are mostly symmetric about its sub-Mars point. Phobos is steadily spiraling inward due to the tides it raises on Mars lagging behind Phobos' orbital position and will suffer tidal disruption before colliding with Mars in a few tens of millions of years. We calculate the surface stress field of the deorbiting satellite and show that the first signs of tidal disruption are already present on its surface. Most of Phobos' prominent grooves have an excellent correlation with computed stress orientations. The model requires a weak interior that has very low rigidity on the tidal evolution time scale, overlain by an approximately 10-100 m exterior shell that has elastic properties similar to lunar regolith as described by Horvath et al. (1980). Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Hurford, Terry A AU - Asphaug, Erik AU - Spitale, J N AU - Hemingway, D AU - Rhoden, A R AU - Henning, W G AU - Bills, B G AU - Kattenhorn, S A AU - Walker, M Y1 - 2016/06// PY - 2016 DA - June 2016 SP - 1054 EP - 1065 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 121 IS - 6 SN - 2169-9097, 2169-9097 KW - terrestrial planets KW - Phobos Satellite KW - planets KW - fractures KW - numerical models KW - elastic properties KW - surface features KW - stress KW - gravity tides KW - Mars KW - satellites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819896236?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Tidal+disruption+of+Phobos+as+the+cause+of+surface+fractures&rft.au=Hurford%2C+Terry+A%3BAsphaug%2C+Erik%3BSpitale%2C+J+N%3BHemingway%2C+D%3BRhoden%2C+A+R%3BHenning%2C+W+G%3BBills%2C+B+G%3BKattenhorn%2C+S+A%3BWalker%2C+M&rft.aulast=Hurford&rft.aufirst=Terry&rft.date=2016-06-01&rft.volume=121&rft.issue=6&rft.spage=1054&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2F2015JE004943 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9100 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 41 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2016-09-16 N1 - SubjectsTermNotLitGenreText - elastic properties; fractures; gravity tides; Mars; numerical models; Phobos Satellite; planets; satellites; stress; surface features; terrestrial planets DO - http://dx.doi.org/10.1002/2015JE004943 ER - TY - JOUR T1 - High concentrations of manganese and sulfur in deposits on Murray Ridge, Endeavour Crater, Mars AN - 1819895672; 2016-079200 AB - Mars Reconnaissance Orbiter HiRISE images and Opportunity rover observations of the approximately 22 km wide Noachian age Endeavour Crater on Mars show that the rim and surrounding terrains were densely fractured during the impact crater-forming event. Fractures have also propagated upward into the overlying Burns formation sandstones. Opportunity's observations show that the western crater rim segment, called Murray Ridge, is composed of impact breccias with basaltic compositions, as well as occasional fracture-filling calcium sulfate veins. Cook Haven, a gentle depression on Murray Ridge, and the site where Opportunity spent its sixth winter, exposes highly fractured, recessive outcrops that have relatively high concentrations of S and Cl, consistent with modest aqueous alteration. Opportunity's rover wheels serendipitously excavated and overturned several small rocks from a Cook Haven fracture zone. Extensive measurement campaigns were conducted on two of them: Pinnacle Island and Stuart Island. These rocks have the highest concentrations of Mn and S measured to date by Opportunity and occur as a relatively bright sulfate-rich coating on basaltic rock, capped by a thin deposit of one or more dark Mn oxide phases intermixed with sulfate minerals. We infer from these unique Pinnacle Island and Stuart Island rock measurements that subsurface precipitation of sulfate-dominated coatings was followed by an interval of partial dissolution and reaction with one or more strong oxidants (e.g., O (sub 2) ) to produce the Mn oxide mineral(s) intermixed with sulfate-rich salt coatings. In contrast to arid regions on Earth, where Mn oxides are widely incorporated into coatings on surface rocks, our results demonstrate that on Mars the most likely place to deposit and preserve Mn oxides was in fracture zones where migrating fluids intersected surface oxidants, forming precipitates shielded from subsequent physical erosion. JF - American Mineralogist AU - Arvidson, Raymond E AU - Squyres, Steven W AU - Morris, Richard V AU - Knoll, Andrew H AU - Gellert, Ralf AU - Clark, Benton C AU - Catalano, Jeffrey G AU - Jolliff, Bradley L AU - McLennan, Scott M AU - Herkenhoff, Kenneth E AU - vanBommel, Scott AU - Mittlefehldt, David W AU - Grotzinger, John P AU - Guinness, Edward A AU - Johnson, Jeffrey R AU - Bell, James F, III AU - Farrand, William H AU - Stein, Nathan AU - Fox, Valerie K AU - Golombek, Matthew P AU - Hinkle, Margaret A G AU - Calvin, Wendy M AU - de Souza, Paulo A, Jr Y1 - 2016/06// PY - 2016 DA - June 2016 SP - 1389 EP - 1405 PB - Mineralogical Society of America, Washington, DC VL - 101 IS - 6 SN - 0003-004X, 0003-004X KW - Noachian KW - Murray Ridge KW - sandstone KW - Mars KW - manganese KW - Mars Exploration Rover KW - sedimentary rocks KW - mineral composition KW - metamorphic rocks KW - manganese oxides KW - oxides KW - HiRISE KW - Pinnacle Island KW - chemical composition KW - Cook Haven fracture zone KW - Burns Formation KW - breccia KW - impactites KW - Opportunity Rover KW - Mars Reconnaissance Orbiter KW - impact breccia KW - terrestrial planets KW - planets KW - fracture zones KW - deposition KW - metals KW - Stuart Island KW - sulfur KW - clastic rocks KW - Endeavour Crater KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819895672?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/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=High+concentrations+of+manganese+and+sulfur+in+deposits+on+Murray+Ridge%2C+Endeavour+Crater%2C+Mars&rft.au=Arvidson%2C+Raymond+E%3BSquyres%2C+Steven+W%3BMorris%2C+Richard+V%3BKnoll%2C+Andrew+H%3BGellert%2C+Ralf%3BClark%2C+Benton+C%3BCatalano%2C+Jeffrey+G%3BJolliff%2C+Bradley+L%3BMcLennan%2C+Scott+M%3BHerkenhoff%2C+Kenneth+E%3BvanBommel%2C+Scott%3BMittlefehldt%2C+David+W%3BGrotzinger%2C+John+P%3BGuinness%2C+Edward+A%3BJohnson%2C+Jeffrey+R%3BBell%2C+James+F%2C+III%3BFarrand%2C+William+H%3BStein%2C+Nathan%3BFox%2C+Valerie+K%3BGolombek%2C+Matthew+P%3BHinkle%2C+Margaret+A+G%3BCalvin%2C+Wendy+M%3Bde+Souza%2C+Paulo+A%2C+Jr&rft.aulast=Arvidson&rft.aufirst=Raymond&rft.date=2016-06-01&rft.volume=101&rft.issue=6&rft.spage=1389&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam-2016-5599 L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2016-01-01 N1 - Number of references - 54 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2016-09-16 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - breccia; Burns Formation; chemical composition; clastic rocks; Cook Haven fracture zone; deposition; Endeavour Crater; fracture zones; HiRISE; impact breccia; impactites; manganese; manganese oxides; Mars; Mars Exploration Rover; Mars Reconnaissance Orbiter; metals; metamorphic rocks; mineral composition; Murray Ridge; Noachian; Opportunity Rover; oxides; Pinnacle Island; planets; sandstone; sedimentary rocks; Stuart Island; sulfur; terrestrial planets DO - http://dx.doi.org/10.2138/am-2016-5599 ER - TY - JOUR T1 - New approaches to inferences for steep-sided domes on Venus AN - 1815670131; 2016-076300 AB - New mathematical approaches for the relaxation and emplacement of viscous lava domes are presented and applied to steep-sided domes on Venus. A similarity solution approach is applied to the governing equation for fluid flow in a cylindrical geometry for two distinct scenarios. In the first scenario, dome relaxation is explored assuming a constant volume of fluid (i.e. lava) has been rapidly emplaced onto the surface. Cooling of lava is represented by a time-variable viscosity and singularities inherent in previous models for dome relaxation have been eliminated. At the onset of relaxation, bulk dynamic viscosities lie in the range between 10 (super 10) -10 (super 16) Pa s, consistent with basaltic-andesite to rhyolitic compositions. Plausible relaxation times range from 5 to 5000 years, depending on initial lava viscosity. The first scenario, however, is only valid during the final stages of dome relaxation and does not consider the time taken for lava to be extruded onto the surface. In the second scenario, emplacement and growth of a steep-sided dome is considered when the volume of lava on the surface increases over time (i.e. time-variable volume approach). The volumetric flowrate may depend on an arbitrary power of the dome thickness, thus embracing Newtonian as well as other rheologies for describing terrestrial and planetary mass flows. The approach can be used to distinguish between basic flowrate models for fluid emplacement. The formalism results in radial expansion of a dome proportional to t (super 1/2) , consistent with the diffusive nature of the governing equation. The flow at the front is shown to thicken as the front advances for a constant rate of lava supply. Emplacement times are intimately correlated with the bulk rheology. Comparison of the theoretical profiles with the shape of a typical dome on Venus indicates that a Newtonian bulk rheology is most appropriate, consistent with prior studies. However, results here suggest a bulk dynamic viscosity of 10 (super 12) -10 (super 13) Pa s and emplacement times of approximately 2-16 years. Both scenarios investigated give emplacement times significantly less than prior estimates and compositions consistent with basaltic andesite. JF - Journal of Volcanology and Geothermal Research AU - Quick, Lynnae C AU - Glaze, Lori S AU - Baloga, Stephen M AU - Stofan, Ellen R Y1 - 2016/06/01/ PY - 2016 DA - 2016 Jun 01 SP - 93 EP - 105 PB - Elsevier, Amsterdam VL - 319 SN - 0377-0273, 0377-0273 KW - andesites KW - volcanic rocks KW - igneous rocks KW - Venus KW - viscous materials KW - theoretical studies KW - volcanism KW - rheology KW - cooling KW - composition KW - basaltic andesite KW - fluid flow KW - rates KW - relaxation KW - equations KW - emplacement KW - boundary conditions KW - terrestrial planets KW - morphology KW - lava domes KW - planets KW - viscosity KW - mathematical methods KW - volume KW - volcanoes KW - theoretical models KW - domes KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815670131?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=New+approaches+to+inferences+for+steep-sided+domes+on+Venus&rft.au=Quick%2C+Lynnae+C%3BGlaze%2C+Lori+S%3BBaloga%2C+Stephen+M%3BStofan%2C+Ellen+R&rft.aulast=Quick&rft.aufirst=Lynnae&rft.date=2016-06-01&rft.volume=319&rft.issue=&rft.spage=93&rft.isbn=&rft.btitle=&rft.title=Journal+of+Volcanology+and+Geothermal+Research&rft.issn=03770273&rft_id=info:doi/10.1016%2Fj.jvolgeores.2016.02.028 L2 - http://www.sciencedirect.com/science/journal/03770273 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 57 N1 - Document feature - illus. incl. 3 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-09-01 N1 - CODEN - JVGRDQ N1 - SubjectsTermNotLitGenreText - andesites; basaltic andesite; boundary conditions; composition; cooling; domes; emplacement; equations; fluid flow; igneous rocks; lava domes; mathematical methods; morphology; planets; rates; relaxation; rheology; terrestrial planets; theoretical models; theoretical studies; Venus; viscosity; viscous materials; volcanic rocks; volcanism; volcanoes; volume DO - http://dx.doi.org/10.1016/j.jvolgeores.2016.02.028 ER - TY - JOUR T1 - Organic matter in cosmic dust AN - 1812214701; 2016-070940 AB - Organics are a significant component of most cosmic dust, as revealed from actual samples of extraterrestrial dust in the Earth's stratosphere, in Antarctic ice and snow, in near-Earth orbit, and in asteroids and comets. Cosmic dust contains a diverse population of organic materials that owe their origins to a variety of chemical processes occurring in many different environments. The presence of isotopic enrichments of D and (super 15) N suggests that many of these organic materials have an interstellar or protosolar heritage. The study of these samples is of considerable importance because they are the best preserved materials of the early Solar System available. JF - Elements AU - Sandford, Scott A AU - Engrand, Cecile AU - Rotundi, Alessandra Y1 - 2016/06// PY - 2016 DA - June 2016 SP - 185 EP - 189 PB - Mineralogical Society of America and Mineralogical Society of Great Britain and Ireland and Mineralogical Association of Canada and Geochemical Society and Clay Minerals Society VL - 12 IS - 3 SN - 1811-5209, 1811-5209 KW - isotopes KW - interplanetary dust KW - stable isotopes KW - life origin KW - nitrogen KW - meteorites KW - presolar grains KW - Wild 2 Comet KW - deuterium KW - Churyumov-Gerasimenko Comet KW - interstellar dust KW - carbonaceous composition KW - Stardust Mission KW - N-15 KW - early solar system KW - morphology KW - micrometeorites KW - organic compounds KW - cosmic dust KW - Rosetta Mission KW - comets KW - Antarctica KW - hydrogen KW - hydrocarbons KW - polycyclic aromatic hydrocarbons KW - cometary dust KW - aromatic hydrocarbons KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1812214701?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Elements&rft.atitle=Organic+matter+in+cosmic+dust&rft.au=Sandford%2C+Scott+A%3BEngrand%2C+Cecile%3BRotundi%2C+Alessandra&rft.aulast=Sandford&rft.aufirst=Scott&rft.date=2016-06-01&rft.volume=12&rft.issue=3&rft.spage=185&rft.isbn=&rft.btitle=&rft.title=Elements&rft.issn=18115209&rft_id=info:doi/10.2113%2Fgselements.12.3.185 L2 - http://www.elementsmagazine.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2016-01-01 N1 - Number of references - 30 N1 - Document feature - illus. N1 - Last updated - 2016-08-18 N1 - SubjectsTermNotLitGenreText - Antarctica; aromatic hydrocarbons; carbonaceous composition; Churyumov-Gerasimenko Comet; cometary dust; comets; cosmic dust; deuterium; early solar system; hydrocarbons; hydrogen; interplanetary dust; interstellar dust; isotopes; life origin; meteorites; micrometeorites; morphology; N-15; nitrogen; organic compounds; polycyclic aromatic hydrocarbons; presolar grains; Rosetta Mission; stable isotopes; Stardust Mission; Wild 2 Comet DO - http://dx.doi.org/10.2113/gselements.12.3.185 ER - TY - JOUR T1 - NASA's Cosmic Dust Program; collecting dust since 1981 AN - 1812214625; 2016-070936 JF - Elements AU - Zolensky, Michael Y1 - 2016/06// PY - 2016 DA - June 2016 SP - 159 EP - 160 PB - Mineralogical Society of America and Mineralogical Society of Great Britain and Ireland and Mineralogical Association of Canada and Geochemical Society and Clay Minerals Society VL - 12 IS - 3 SN - 1811-5209, 1811-5209 KW - clean rooms KW - asteroids KW - microanalysis KW - government agencies KW - interplanetary dust KW - laboratory studies KW - stratosphere KW - sampling KW - Wild 2 Comet KW - interstellar dust KW - collections KW - programs KW - collecting KW - Stardust Mission KW - atmosphere KW - curation KW - cosmic dust KW - comets KW - NASA KW - microscope methods KW - meteor showers KW - aircraft KW - scanning electron microscopy KW - cometary dust KW - storage KW - airborne methods KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1812214625?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Elements&rft.atitle=NASA%27s+Cosmic+Dust+Program%3B+collecting+dust+since+1981&rft.au=Zolensky%2C+Michael&rft.aulast=Zolensky&rft.aufirst=Michael&rft.date=2016-06-01&rft.volume=12&rft.issue=3&rft.spage=159&rft.isbn=&rft.btitle=&rft.title=Elements&rft.issn=18115209&rft_id=info:doi/10.2113%2Fgselements.12.3.159 L2 - http://www.elementsmagazine.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2016-01-01 N1 - Number of references - 13 N1 - Document feature - illus. N1 - Last updated - 2016-08-18 N1 - SubjectsTermNotLitGenreText - airborne methods; aircraft; asteroids; atmosphere; clean rooms; collecting; collections; cometary dust; comets; cosmic dust; curation; government agencies; interplanetary dust; interstellar dust; laboratory studies; meteor showers; microanalysis; microscope methods; NASA; programs; sampling; scanning electron microscopy; Stardust Mission; storage; stratosphere; Wild 2 Comet DO - http://dx.doi.org/10.2113/gselements.12.3.159 ER - TY - JOUR T1 - Cosmic dust; finding a needle in a haystack AN - 1812211497; 2016-070938 AB - Collecting cosmic dust is a tricky business! Despite Earth's surface being showered by thousands of tons of comic dust every year, such dust is quickly lost in a sea of terrestrial particles. Finding the tiny cosmic treasures requires collecting dust from the cleanest environments where the terrestrial particle background is low. The stratosphere can be sampled via high-flying aircraft, whereas sampling cosmic dust from polar regions and the deep sea requires techniques that concentrate the particles. Collection efforts are worth it. Cosmic dust derives from every dust-producing object in the Solar System, including ancient Solar System materials, possibly even interstellar materials, of a type not found in meteorites. JF - Elements AU - Taylor, Susan AU - Messenger, Scott AU - Folco, Luigi Y1 - 2016/06// PY - 2016 DA - June 2016 SP - 171 EP - 176 PB - Mineralogical Society of America and Mineralogical Society of Great Britain and Ireland and Mineralogical Association of Canada and Geochemical Society and Clay Minerals Society VL - 12 IS - 3 SN - 1811-5209, 1811-5209 KW - aggregate KW - asteroids KW - cosmogenic elements KW - deep-sea environment KW - interplanetary dust KW - melts KW - meteorites KW - stratosphere KW - sampling KW - noble gases KW - future KW - chemical composition KW - interstellar dust KW - spherules KW - polar regions KW - collecting KW - parent bodies KW - porous materials KW - size KW - early solar system KW - aqueous alteration KW - micrometeorites KW - cosmic dust KW - comets KW - Antarctica KW - marine environment KW - meteor showers KW - classification KW - aircraft KW - cometary dust KW - airborne methods KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1812211497?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Elements&rft.atitle=Cosmic+dust%3B+finding+a+needle+in+a+haystack&rft.au=Taylor%2C+Susan%3BMessenger%2C+Scott%3BFolco%2C+Luigi&rft.aulast=Taylor&rft.aufirst=Susan&rft.date=2016-06-01&rft.volume=12&rft.issue=3&rft.spage=171&rft.isbn=&rft.btitle=&rft.title=Elements&rft.issn=18115209&rft_id=info:doi/10.2113%2Fgselements.12.3.171 L2 - http://www.elementsmagazine.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2016-01-01 N1 - Number of references - 30 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2016-08-18 N1 - SubjectsTermNotLitGenreText - aggregate; airborne methods; aircraft; Antarctica; aqueous alteration; asteroids; chemical composition; classification; collecting; cometary dust; comets; cosmic dust; cosmogenic elements; deep-sea environment; early solar system; future; interplanetary dust; interstellar dust; marine environment; melts; meteor showers; meteorites; micrometeorites; noble gases; parent bodies; polar regions; porous materials; sampling; size; spherules; stratosphere DO - http://dx.doi.org/10.2113/gselements.12.3.171 ER - TY - JOUR T1 - Prebiotic chemistry and atmospheric warming of early Earth by an active young Sun AN - 1808728802; PQ0003237144 AB - Nitrogen is a critical ingredient of complex biological molecules. Molecular nitrogen, however, which was outgassed into the Earth's early atmosphere, is relatively chemically inert and nitrogen fixation into more chemically reactive compounds requires high temperatures. Possible mechanisms of nitrogen fixation include lightning, atmospheric shock heating by meteorites, and solar ultraviolet radiation. Here we show that nitrogen fixation in the early terrestrial atmosphere can be explained by frequent and powerful coronal mass ejection events from the young Sun-so-called superflares. Using magnetohydrodynamic simulations constrained by Kepler Space Telescope observations, we find that successive superflare ejections produce shocks that accelerate energetic particles, which would have compressed the early Earth's magnetosphere. The resulting extended polar cap openings provide pathways for energetic particles to penetrate into the atmosphere and, according to our atmospheric chemistry simulations, initiate reactions converting molecular nitrogen, carbon dioxide and methane to the potent greenhouse gas nitrous oxide as well as hydrogen cyanide, an essential compound for life. Furthermore, the destruction of N sub(2), CO sub(2) and CH sub(4) suggests that these greenhouse gases cannot explain the stability of liquid water on the early Earth. Instead, we propose that the efficient formation of nitrous oxide could explain a warm early Earth. JF - Nature Geoscience AU - Airapetian, V S AU - Glocer, A AU - Gronoff, G AU - Hebrard, E AU - Danchi, W AD - NASA Goddard Space Flight Center, 8800 Greenbelt Rd, Greenbelt, Maryland 20771, USA Y1 - 2016/06// PY - 2016 DA - June 2016 SP - 452 EP - 455 PB - Nature Publishing Group, The Macmillan Building London N1 9XW United Kingdom VL - 9 IS - 6 SN - 1752-0894, 1752-0894 KW - Ecology Abstracts; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Lightning KW - Climate change KW - Hydrogen KW - Electricity KW - Solar radiation KW - Atmosphere KW - High temperatures KW - Cyanide KW - Magnetosphere KW - U.V. radiation KW - Nitrous oxide KW - Magnetohydrodynamics KW - Polar cap KW - Nitrogen Fixation KW - Ultraviolet radiation KW - Sun KW - Methane KW - Atmospheric gases KW - Temperature requirements KW - Hydrogen cyanide KW - Coronal mass ejections KW - Solar ultraviolet irradiance KW - Greenhouse effect KW - Solar atmospheric heating KW - Greenhouses KW - Heating KW - Numerical simulations KW - Shock KW - Nitrogen fixation KW - Atmospheric chemistry KW - Greenhouse gases KW - Carbon dioxide KW - Oxides KW - Nitrogen KW - Carbon Dioxide KW - Q2 09262:Methods and instruments KW - SW 0810:General KW - D 04040:Ecosystem and Ecology Studies KW - M2 523.64:Comets (523.64) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808728802?accountid=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=Nature+Geoscience&rft.atitle=Prebiotic+chemistry+and+atmospheric+warming+of+early+Earth+by+an+active+young+Sun&rft.au=Airapetian%2C+V+S%3BGlocer%2C+A%3BGronoff%2C+G%3BHebrard%2C+E%3BDanchi%2C+W&rft.aulast=Airapetian&rft.aufirst=V&rft.date=2016-06-01&rft.volume=9&rft.issue=6&rft.spage=452&rft.isbn=&rft.btitle=&rft.title=Nature+Geoscience&rft.issn=17520894&rft_id=info:doi/10.1038%2Fngeo2719 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-07-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Methane; Atmospheric gases; Lightning; Nitrous oxide; Nitrogen fixation; Climate change; Atmospheric chemistry; Greenhouse effect; Carbon dioxide; Hydrogen cyanide; Temperature requirements; Electricity; Atmosphere; Greenhouses; U.V. radiation; Shock; Sun; Greenhouse gases; Coronal mass ejections; Solar ultraviolet irradiance; Hydrogen; Solar atmospheric heating; Solar radiation; High temperatures; Magnetosphere; Numerical simulations; Polar cap; Magnetohydrodynamics; Ultraviolet radiation; Cyanide; Heating; Nitrogen Fixation; Oxides; Carbon Dioxide; Nitrogen DO - http://dx.doi.org/10.1038/ngeo2719 ER - TY - JOUR T1 - The relationship between latent heating, vertical velocity, and precipitation processes: The impact of aerosols on precipitation in organized deep convective systems AN - 1808684809; PQ0003353584 AB - A high-resolution, two-dimensional cloud-resolving model with spectral-bin microphysics is used to study the impact of aerosols on precipitation processes in both a tropical oceanic and a midlatitude continental squall line with regard to three processes: latent heating (LH), cold pool dynamics, and ice microphysics. Evaporative cooling in the lower troposphere is found to enhance rainfall in low cloud condensation nuclei (CCN) concentration scenarios in the developing stages of a midlatitude convective precipitation system. In contrast, the tropical case produced more rainfall under high CCN concentrations. Both cold pools and low-level convergence are stronger for those configurations having enhanced rainfall. Nevertheless, latent heat release is stronger (especially after initial precipitation) in the scenarios having more rainfall in both the tropical and midlatitude environment. Sensitivity tests are performed to examine the impact of ice and evaporative cooling on the relationship between aerosols, LH, and precipitation processes. The results show that evaporative cooling is important for cold pool strength and rain enhancement in both cases. However, ice microphysics play a larger role in the midlatitude case compared to the tropics. Detailed analysis of the vertical velocity-governing equation shows that temperature buoyancy can enhance updrafts/downdrafts in the middle/lower troposphere in the convective core region; however, the vertical pressure gradient force (PGF) is of the same order and acts in the opposite direction. Water loading is small but of the same order as the net PGF-temperature buoyancy forcing. The balance among these terms determines the intensity of convection. Key Points * Increasing aerosol number concentrations could either enhance or reduce surface precipitation * Enhanced near-surface cold pool strength is important in precipitation enhancement * Other processes include modifications of latent heat release and ice microphysics by aerosols JF - Journal of Geophysical Research: Atmospheres AU - Tao, Wei-Kuo AU - Li, Xiaowen AD - Mesoscale Atmospheric Processes Laboratory, NASA/Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2016/06// PY - 2016 DA - June 2016 SP - 6299 EP - 6320 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 121 IS - 11 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Convection KW - Rainfall KW - Pools KW - Downdrafts KW - Latent Heat KW - Cold pools KW - Vertical velocities KW - Buoyancy KW - Atmospheric precipitations KW - Marine KW - Aerosols KW - Ocean-ice-atmosphere system KW - Precipitation processes KW - Aerosols-cloud condensation nuclei relationships KW - Brackish KW - Troposphere KW - Precipitation KW - Cloud condensation nuclei KW - Cooling KW - Clouds KW - Strength KW - Sea ice KW - Heating KW - Lower troposphere KW - Convective activity KW - Latent heat release KW - Loads (forces) KW - Squall lines KW - Pressure gradients KW - Evaporative cooling KW - Q2 09243:Structure, mechanics and thermodynamics KW - M2 551.510.42:Air Pollution (551.510.42) KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808684809?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=The+relationship+between+latent+heating%2C+vertical+velocity%2C+and+precipitation+processes%3A+The+impact+of+aerosols+on+precipitation+in+organized+deep+convective+systems&rft.au=Tao%2C+Wei-Kuo%3BLi%2C+Xiaowen&rft.aulast=Tao&rft.aufirst=Wei-Kuo&rft.date=2016-06-01&rft.volume=121&rft.issue=11&rft.spage=6299&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2015JD024267 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-07-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Convection; Atmospheric precipitations; Sea ice; Ocean-ice-atmosphere system; Aerosols; Troposphere; Loads (forces); Pressure gradients; Buoyancy; Precipitation processes; Aerosols-cloud condensation nuclei relationships; Precipitation; Cloud condensation nuclei; Downdrafts; Cold pools; Clouds; Lower troposphere; Latent heat release; Convective activity; Vertical velocities; Squall lines; Evaporative cooling; Strength; Heating; Rainfall; Pools; Cooling; Latent Heat; Marine; Brackish DO - http://dx.doi.org/10.1002/2015JD024267 ER - TY - JOUR T1 - An "On-Line" Method for Oxygen Isotope Exchange Between Gas-Phase CO sub(2) and Water AN - 1808648787; PQ0003175780 AB - An "on-line" mixing system has been developed and evaluated for continuous oxygen isotope exchange between gas-phase CO sub(2) and liquid water. The system is composed of three basic parts: equipment and materials used to introduce water and gas into a mixing reservoir, the mixing and exchange reservoir, and a vessel used to separate gas and water phases exiting the system. A series of experiments were performed to monitor the isotope exchange process over a range of temperatures (5-40 degree C) and CO sub(2) partial pressures (202-15,200 Pa). Isotopic exchange was evaluated using CO sub(2) having delta super(18)O values of 30.4 and 37.8 ppt and waters of two distinct oxygen isotope compositions (-6.5 to -5 and 6 to 7.5 ppt). Isotope ratios were determined by isotope ratio mass spectrometry and cavity ring-down spectroscopy. CO sub(2) did not reach oxygen isotope equilibrium under the conditions described here. However, oxygen isotope exchange rate constants were determined at different temperatures and regressed to yield the expression k (h super(-1)) = 0.020 T ( degree C) + 0.28. Using this expression, the residence time required to reach oxygen isotope equilibrium may be estimated for a given set of environmental conditions (e.g., delta super(18)O value of water, temperature). System parameters can be modified to achieve a specific delta super(18)O value for CO sub(2). Consequently, the exchange system described here has the ability to deliver a constant flow of CO sub(2) at a desired oxygen isotope composition. This ability is attractive for a variety of applications such as experiments that utilize flow-through reactors and environmental chambers or require static chemical conditions. JF - Aquatic Geochemistry AU - Levitt, Nicholas Paul AU - Romanek, Christopher S AD - NASA Astrobiology Institute and Department of Earth and Environmental Sciences, University of Kentucky, Lexington, KY, 40506, USA, nlevitt@wisc.edu Y1 - 2016/06// PY - 2016 DA - June 2016 SP - 253 EP - 269 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 22 IS - 3 SN - 1380-6165, 1380-6165 KW - Aqualine Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Mass Spectrometry KW - Reservoir KW - Water Temperature KW - Residence time KW - Mixing KW - Environmental factors KW - Reservoirs KW - Temperature effects KW - Geochemistry KW - Temperature KW - Oxygen isotopes KW - Equilibrium KW - Oxygen Isotopes KW - Oxygen isotope ratio KW - Carbon dioxide KW - Environmental conditions KW - Carbon Dioxide KW - AQ 00001:Water Resources and Supplies KW - Q2 09262:Methods and instruments KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808648787?accountid=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=Aquatic+Geochemistry&rft.atitle=An+%22On-Line%22+Method+for+Oxygen+Isotope+Exchange+Between+Gas-Phase+CO+sub%282%29+and+Water&rft.au=Levitt%2C+Nicholas+Paul%3BRomanek%2C+Christopher+S&rft.aulast=Levitt&rft.aufirst=Nicholas&rft.date=2016-06-01&rft.volume=22&rft.issue=3&rft.spage=253&rft.isbn=&rft.btitle=&rft.title=Aquatic+Geochemistry&rft.issn=13806165&rft_id=info:doi/10.1007%2Fs10498-016-9291-5 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-07-01 N1 - Number of references - 27 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Temperature effects; Oxygen isotopes; Reservoir; Residence time; Geochemistry; Oxygen isotope ratio; Environmental conditions; Carbon dioxide; Environmental factors; Mass Spectrometry; Water Temperature; Equilibrium; Temperature; Oxygen Isotopes; Reservoirs; Mixing; Carbon Dioxide DO - http://dx.doi.org/10.1007/s10498-016-9291-5 ER - TY - JOUR T1 - Modeling landslide susceptibility over large regions with fuzzy overlay AN - 1808634064; PQ0003183456 AB - Landslide susceptibility mapping is most effective if detailed surface and subsurface information can be combined with authoritative landslide catalogs or a deep understanding of local conditions. However, these types of homogeneous input data and catalogs are frequently not available over large areas. In this study, we model landslide susceptibility in Central America and the Caribbean islands by combining three globally available datasets and one regional dataset with fuzzy overlay. This primarily heuristic model provides the flexibility to test a range of different contributing variables and the capability to compare landslide inventories within the model framework that vary greatly in their size, spatiotemporal scope, and collection methods. We create a regional susceptibility map and evaluate its performance using receiver operating characteristics for both continuous and binned susceptibility values. This susceptibility map forms the basis for a near-real-time landslide hazard assessment system that couples susceptibility with rainfall and soil moisture triggers to estimate potential landslide activity at a regional scale. The application of this susceptibility model at the regional scale provides a foundation for transferring the methodology to other geographic areas. JF - Landslides AU - Kirschbaum, Dalia AU - Stanley, Thomas AU - Yatheendradas, Soni AD - Hydrological Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, 20771, USA, dalia.b.kirschbaum@nasa.gov Y1 - 2016/06// PY - 2016 DA - June 2016 SP - 485 EP - 496 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 13 IS - 3 SN - 1612-510X, 1612-510X KW - Meteorological & Geoastrophysical Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Caribbean Islands KW - Flexibility KW - Rainfall KW - Catalogues KW - Model Testing KW - Model Studies KW - Methodology KW - Landslides KW - Performance Evaluation KW - Assessments KW - Soils KW - Moisture Content KW - Mapping KW - Soil moisture KW - Central America KW - Modelling KW - Hazard assessment KW - Q2 09144:Regional studies, expeditions and data reports KW - SW 0810:General KW - M2 556.14:Infiltration/Soil Moisture (556.14) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808634064?accountid=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=Landslides&rft.atitle=Modeling+landslide+susceptibility+over+large+regions+with+fuzzy+overlay&rft.au=Kirschbaum%2C+Dalia%3BStanley%2C+Thomas%3BYatheendradas%2C+Soni&rft.aulast=Kirschbaum&rft.aufirst=Dalia&rft.date=2016-06-01&rft.volume=13&rft.issue=3&rft.spage=485&rft.isbn=&rft.btitle=&rft.title=Landslides&rft.issn=1612510X&rft_id=info:doi/10.1007%2Fs10346-015-0577-2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-07-01 N1 - Number of references - 51 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Landslides; Soils; Catalogues; Mapping; Hazard assessment; Methodology; Modelling; Soil moisture; Performance Evaluation; Assessments; Rainfall; Flexibility; Moisture Content; Model Testing; Model Studies; Caribbean Islands; Central America DO - http://dx.doi.org/10.1007/s10346-015-0577-2 ER - TY - JOUR T1 - Mineralogy of iron sulfides in CM1 and CI1 lithologies of the Kaidun breccia; records of extreme to intense hydrothermal alteration AN - 1803776501; 2016-063103 AB - The polymict Kaidun microbreccia contains lithologies of C-type chondrites with euhedral iron sulfide crystals of hydrothermal origin. Our FIB-TEM study reveals that acicular sulfides in a CM1 lithology are composed of Fe-rich pyrrhotite with nonintegral vacancy superstructures (NC-pyrrhotite), troilite, and pentlandite, all showing distinct exsolution textures. Based on phase relations in the Fe-Ni-S system, we constrain the temperature of formation of the originally homogeneous monosulfide solid solution to the range of 100-300 degrees C. In some crystals the exsolution of pentlandite and the microtextural equilibration was incomplete, probably due to rapid cooling. We use thermodynamic modeling to constrain the physicochemical conditions of the extreme hydrothermal alteration in this lithology. Unless the CM1 lithology was sourced from a large depth in the parent body (internal pressure >85 bar) or the temperatures were in the lower range of the interval determined, the water was likely present as vapor. Previously described light delta (super 34) S compositions of sulfides in Kaidun's CM1 lithology are likely due to the loss of (super 34) S-enriched H (sub 2) S during boiling. Platy sulfide crystals in an adjacent, intensely altered CI1 lithology are composed of Fe-poor, monoclinic 4C-pyrrhotite and NC-pyrrhotite and probably formed at lower temperatures and higher fS (sub 2) relative to the CM1 lithology. However, a better understanding of the stability of Fe-poor pyrrhotites at temperatures below 300 degrees C is required to better constrain these conditions. Abstract Copyright The Meteoritical Society, 2016. JF - Meteoritics & Planetary Science AU - Harries, Dennis AU - Zolensky, Michael E Y1 - 2016/06// PY - 2016 DA - June 2016 SP - 1096 EP - 1109 PB - Meteoritical Society, Fayetteville, AR VL - 51 IS - 6 SN - 1086-9379, 1086-9379 KW - stony meteorites KW - isotopes KW - pentlandite KW - microstructure KW - thermal history KW - metasomatism KW - stable isotopes KW - fugacity KW - temperature KW - meteorites KW - phase equilibria KW - cooling KW - hydrothermal alteration KW - chondrites KW - pyrrhotite KW - troilite KW - CI chondrites KW - breccia KW - textures KW - isotope ratios KW - parent bodies KW - electron microscopy data KW - carbonaceous chondrites KW - solid solution KW - TEM data KW - early solar system KW - Kaidun Meteorite KW - S-34/S-32 KW - iron sulfides KW - sulfur KW - exsolution KW - CM chondrites KW - sulfides KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803776501?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=Mineralogy+of+iron+sulfides+in+CM1+and+CI1+lithologies+of+the+Kaidun+breccia%3B+records+of+extreme+to+intense+hydrothermal+alteration&rft.au=Harries%2C+Dennis%3BZolensky%2C+Michael+E&rft.aulast=Harries&rft.aufirst=Dennis&rft.date=2016-06-01&rft.volume=51&rft.issue=6&rft.spage=1096&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12648 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 52 N1 - PubXState - AR N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2016-07-14 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - breccia; carbonaceous chondrites; chondrites; CI chondrites; CM chondrites; cooling; early solar system; electron microscopy data; exsolution; fugacity; hydrothermal alteration; iron sulfides; isotope ratios; isotopes; Kaidun Meteorite; metasomatism; meteorites; microstructure; parent bodies; pentlandite; phase equilibria; pyrrhotite; S-34/S-32; solid solution; stable isotopes; stony meteorites; sulfides; sulfur; TEM data; temperature; textures; thermal history; troilite DO - http://dx.doi.org/10.1111/maps.12648 ER - TY - JOUR T1 - Deposition, accumulation, and alteration of Cl (super -) , NO (sub 3) (super -) , ClO (sub 4) (super -) and ClO (sub 3) (super -) salts in a hyper-arid polar environment; mass balance and isotopic constraints AN - 1803774482; 2016-062760 AB - The salt fraction in permafrost soils/sediments of the McMurdo Dry Valleys (MDV) of Antarctica can be used as a proxy for cold desert geochemical processes and paleoclimate reconstruction. Previous analyses of the salt fraction in MDV permafrost soils have largely been conducted in coastal regions where permafrost soils are variably affected by aqueous processes and mixed inputs from marine and stratospheric sources. We expand upon this work by evaluating permafrost soil/sediments in University Valley, located in the ultraxerous zone where both liquid water transport and marine influences are minimal. We determined the abundances of Cl (super -) , NO (sub 3) (super -) , ClO (sub 4) (super -) and ClO (sub 3) (super -) in dry and ice-cemented soil/sediments, snow and glacier ice, and also characterized Cl (super -) and NO (sub 3) (super -) isotopically. The data are not consistent with salt deposition in a sublimation till, nor with nuclear weapon testing fall-out, and instead point to a dominantly stratospheric source and to varying degrees of post depositional transformation depending on the substrate, from minimal alteration in bare soils to significant alteration (photodegradation and/or volatilization) in snow and glacier ice. Ionic abundances in the dry permafrost layer indicate limited vertical transport under the current climate conditions, likely due to percolation of snowmelt. Subtle changes in ClO (sub 4) (super -) /NO (sub 3) (super -) ratios and NO (sub 3) (super -) isotopic composition with depth and location may reflect both transport related fractionation and depositional history. Low molar ratios of ClO (sub 3) (super -) /ClO (sub 4) (super -) in surface soils compared to deposition and other arid systems suggest significant post depositional loss of ClO (sub 3) (super -) , possibly due to reduction by iron minerals, which may have important implications for oxy-chlorine species on Mars. Salt accumulation varies with distance along the valley and apparent accumulation times based on multiple methods range from approximately 10 to 30 kyr near the glacier to 70-200 kyr near the valley mouth. The relatively young age of the salts and relatively low and homogeneous anion concentrations in the ice-cemented sediments point to either a mechanism of recent salt removal, or to relatively modern permafrost soils (<1 million years). Together, our results show that near surface salts in University Valley serve as an end-member of stratospheric sources not subject to biological processes or extensive remobilization. Abstract Copyright (2016) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Jackson, Andrew AU - Davila, Alfonso F AU - Boehlke, John Karl AU - Sturchio, Neil C AU - Sevanthi, Ritesh AU - Estrada, Nubia AU - Brundrett, Maeghan AU - Lacelle, Denis AU - McKay, Christopher P AU - Poghosyan, Armen AU - Pollard, Wayne AU - Zacny, Kris Y1 - 2016/06/01/ PY - 2016 DA - 2016 Jun 01 SP - 197 EP - 215 PB - Elsevier, New York, NY VL - 182 SN - 0016-7037, 0016-7037 KW - alteration KW - terrestrial environment KW - permafrost KW - oxygen KW - isotopes KW - halogens KW - mass spectra KW - paleoclimatology KW - stable isotopes KW - iron KW - nitrogen KW - transport KW - mass balance KW - ice KW - sediments KW - percolation KW - spectra KW - chemical composition KW - saline composition KW - soils KW - chlorine KW - University Valley KW - N-15/N-14 KW - isotope ratios KW - arid environment KW - nitrates KW - O-18/O-16 KW - Antarctica KW - ion chromatograms KW - deposition KW - metals KW - chromatograms KW - Cl-37/Cl-35 KW - McMurdo dry valleys KW - Victoria Land KW - reconstruction KW - meltwater KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803774482?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Deposition%2C+accumulation%2C+and+alteration+of+Cl+%28super+-%29+%2C+NO+%28sub+3%29+%28super+-%29+%2C+ClO+%28sub+4%29+%28super+-%29+and+ClO+%28sub+3%29+%28super+-%29+salts+in+a+hyper-arid+polar+environment%3B+mass+balance+and+isotopic+constraints&rft.au=Jackson%2C+Andrew%3BDavila%2C+Alfonso+F%3BBoehlke%2C+John+Karl%3BSturchio%2C+Neil+C%3BSevanthi%2C+Ritesh%3BEstrada%2C+Nubia%3BBrundrett%2C+Maeghan%3BLacelle%2C+Denis%3BMcKay%2C+Christopher+P%3BPoghosyan%2C+Armen%3BPollard%2C+Wayne%3BZacny%2C+Kris&rft.aulast=Jackson&rft.aufirst=Andrew&rft.date=2016-06-01&rft.volume=182&rft.issue=&rft.spage=197&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2016.03.012 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 72 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables, sketch map N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-07-14 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - alteration; Antarctica; arid environment; chemical composition; chlorine; chromatograms; Cl-37/Cl-35; deposition; halogens; ice; ion chromatograms; iron; isotope ratios; isotopes; mass balance; mass spectra; McMurdo dry valleys; meltwater; metals; N-15/N-14; nitrates; nitrogen; O-18/O-16; oxygen; paleoclimatology; percolation; permafrost; reconstruction; saline composition; sediments; soils; spectra; stable isotopes; terrestrial environment; transport; University Valley; Victoria Land DO - http://dx.doi.org/10.1016/j.gca.2016.03.012 ER - TY - JOUR T1 - Acceleration of oxygen decline in the tropical Pacific over the past decades by aerosol pollutants AN - 1800396235; 2016-059068 JF - Nature Geoscience AU - Ito, Taka AU - Nens, A AU - Johnson, M S AU - Meskhidze, N AU - Deutsch, C Y1 - 2016/06// PY - 2016 DA - June 2016 SP - 443 EP - 447 PB - Nature Publishing Group, London VL - 9 IS - 6 SN - 1752-0894, 1752-0894 KW - tropical environment KW - ocean circulation KW - sea water KW - oxygen KW - biochemistry KW - sinks KW - solutes KW - pollution KW - solubility KW - iron KW - variations KW - geochemical cycle KW - dissolved oxygen KW - metals KW - marine environment KW - Pacific Ocean KW - aerosols KW - 07:Oceanography KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800396235?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Acceleration+of+oxygen+decline+in+the+tropical+Pacific+over+the+past+decades+by+aerosol+pollutants&rft.au=Ito%2C+Taka%3BNens%2C+A%3BJohnson%2C+M+S%3BMeskhidze%2C+N%3BDeutsch%2C+C&rft.aulast=Ito&rft.aufirst=Taka&rft.date=2016-06-01&rft.volume=9&rft.issue=6&rft.spage=443&rft.isbn=&rft.btitle=&rft.title=Nature+Geoscience&rft.issn=17520894&rft_id=info:doi/10.1038%2FNGEO2717 L2 - http://www.nature.com/ngeo/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 29 N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2016-06-30 N1 - SubjectsTermNotLitGenreText - aerosols; biochemistry; dissolved oxygen; geochemical cycle; iron; marine environment; metals; ocean circulation; oxygen; Pacific Ocean; pollution; sea water; sinks; solubility; solutes; tropical environment; variations DO - http://dx.doi.org/10.1038/NGEO2717 ER - TY - JOUR T1 - Saturn's icy satellites investigated by Cassini-VIMS; IV, Daytime temperature maps AN - 1797539752; 2016-051312 JF - Icarus AU - Filacchione, Gianrico AU - D'Aversa, Emiliano AU - Capaccioni, Fabrizio AU - Clark, Roger N AU - Cruikshank, Dale P AU - Ciarniello, Mauro AU - Cerroni, Priscilla AU - Bellucci, Giancarlo AU - Brown, Robert H AU - Buratti, Bonnie J AU - Nicholson, Philip D AU - Jaumann, Ralf AU - McCord, Thomas B AU - Sotin, Christophe AU - Stephan, Katrin AU - Dalle Ore, Cristina M Y1 - 2016/06// PY - 2016 DA - June 2016 SP - 292 EP - 313 PB - Elsevier, New York, NY VL - 271 SN - 0019-1035, 0019-1035 KW - icy satellites KW - Hyperion Satellite KW - Visual and Infrared Mapping Spectrometer KW - Tethys Satellite KW - mapping KW - temperature KW - infrared spectra KW - giant planets KW - Saturn KW - Cassini-Huygens Mission KW - thermal anomalies KW - thermal emission KW - spectra KW - outer planets KW - diurnal variations KW - satellites KW - Mimas Satellite KW - Rhea Satellite KW - Iapetus Satellite KW - planets KW - planetary rings KW - optical constant KW - geomorphology KW - Enceladus Satellite KW - Dione Satellite KW - reflectance KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1797539752?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+icy+satellites+investigated+by+Cassini-VIMS%3B+IV%2C+Daytime+temperature+maps&rft.au=Filacchione%2C+Gianrico%3BD%27Aversa%2C+Emiliano%3BCapaccioni%2C+Fabrizio%3BClark%2C+Roger+N%3BCruikshank%2C+Dale+P%3BCiarniello%2C+Mauro%3BCerroni%2C+Priscilla%3BBellucci%2C+Giancarlo%3BBrown%2C+Robert+H%3BBuratti%2C+Bonnie+J%3BNicholson%2C+Philip+D%3BJaumann%2C+Ralf%3BMcCord%2C+Thomas+B%3BSotin%2C+Christophe%3BStephan%2C+Katrin%3BDalle+Ore%2C+Cristina+M&rft.aulast=Filacchione&rft.aufirst=Gianrico&rft.date=2016-06-01&rft.volume=271&rft.issue=&rft.spage=292&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.02.019 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 80 N1 - PubXState - NY N1 - Document feature - illus. incl. 8 tables, sketch maps N1 - Last updated - 2016-06-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - Cassini-Huygens Mission; Dione Satellite; diurnal variations; Enceladus Satellite; geomorphology; giant planets; Hyperion Satellite; Iapetus Satellite; icy satellites; infrared spectra; mapping; Mimas Satellite; optical constant; outer planets; planetary rings; planets; reflectance; regolith; Rhea Satellite; satellites; Saturn; spectra; temperature; Tethys Satellite; thermal anomalies; thermal emission; Visual and Infrared Mapping Spectrometer DO - http://dx.doi.org/10.1016/j.icarus.2016.02.019 ER - TY - JOUR T1 - The spectrum of Jupiter's Great Red Spot; the case for ammonium hydrosulfide (NH (sub 4) SH) AN - 1797537963; 2016-051309 JF - Icarus AU - Loeffler, Mark J AU - Hudson, Reggie L AU - Chanover, Nancy J AU - Simon, Amy A Y1 - 2016/06// PY - 2016 DA - June 2016 SP - 265 EP - 268 PB - Elsevier, New York, NY VL - 271 SN - 0019-1035, 0019-1035 KW - clouds KW - experimental studies KW - irradiation KW - optical spectra KW - Jupiter KW - atmosphere KW - troposphere KW - Great Red Spot KW - temperature KW - giant planets KW - planets KW - laboratory studies KW - ammonium hydrosulfide KW - Hubble Space Telescope KW - ultraviolet spectra KW - cosmic rays KW - spectra KW - radiolysis KW - outer planets KW - reflectance KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1797537963?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+spectrum+of+Jupiter%27s+Great+Red+Spot%3B+the+case+for+ammonium+hydrosulfide+%28NH+%28sub+4%29+SH%29&rft.au=Loeffler%2C+Mark+J%3BHudson%2C+Reggie+L%3BChanover%2C+Nancy+J%3BSimon%2C+Amy+A&rft.aulast=Loeffler&rft.aufirst=Mark&rft.date=2016-06-01&rft.volume=271&rft.issue=&rft.spage=265&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.02.010 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 34 N1 - PubXState - NY N1 - Document feature - illus. N1 - Last updated - 2016-06-17 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - ammonium hydrosulfide; atmosphere; clouds; cosmic rays; experimental studies; giant planets; Great Red Spot; Hubble Space Telescope; irradiation; Jupiter; laboratory studies; optical spectra; outer planets; planets; radiolysis; reflectance; spectra; temperature; troposphere; ultraviolet spectra DO - http://dx.doi.org/10.1016/j.icarus.2016.02.010 ER - TY - JOUR T1 - Satellite radiance assimilation using a 3DVAR assimilation system for hurricane Sandy forecasts AN - 1790931951; PQ0003134598 AB - In this article, we present an assimilation impact study for forecasting hurricane Sandy using a threea[euro]dimensional variational data assimilation system (3DVAR). In particular, we employ the 3DVAR component of the Weather Research and Forecasting Model and conduct analysis/forecast cycling experiments for "control" and "radiance" assimilation cases for the hurricane Sandy period. In "control" assimilation experiment, only conventional air and surface observations data are assimilated, while, in "radiance" assimilation experiment, along with the conventional air and surface observations data, the satellite radiance data from the Advanced Microwave Sounding Unit-A (AMSU-A) and the Microwave Humidity Sounder (MHS) sensors are also assimilated. For the radiance assimilation, we employ the community radiative transfer model as the forward operator and perform quality control and bias correction procedure before the radiance data are assimilated. In order to assess the impact of the assimilation experiments, we produce 132-h deterministic forecast starting on 00 UTC October 25, 2012. The results reveal that, in particular, the assimilation of AMSU-A satellite radiances helps to improve the short- to medium-range forecast (up to ~60-h lead time). The forecast skill is degraded in the long-range forecast (beyond 60 h) with the AMSU-A assimilation. JF - Natural Hazards AU - Islam, Tanvir AU - Srivastava, Prashant K AU - Kumar, Dinesh AU - Petropoulos, George P AU - Dai, Qiang AU - Zhuo, Lu AD - Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA, 91109, USA, tanvir.islam@jpl.nasa.gov Y1 - 2016/06// PY - 2016 DA - June 2016 SP - 845 EP - 855 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 82 IS - 2 SN - 0921-030X, 0921-030X KW - Environment Abstracts; Meteorological & Geoastrophysical Abstracts KW - Weather KW - Data collection KW - Sensors KW - Remote sensing KW - Humidity KW - Satellite instrumentation KW - Satellites KW - Data assimilation KW - Hurricane forecasting KW - Hurricanes KW - Radiative transfer models KW - Quality control KW - Radiative transfer KW - Long-range forecasts KW - Medium-range forecasting KW - M2 551.509.1/.5:Forecasting (551.509.1/.5) KW - ENA 01:Air Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1790931951?accountid=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=Natural+Hazards&rft.atitle=Satellite+radiance+assimilation+using+a+3DVAR+assimilation+system+for+hurricane+Sandy+forecasts&rft.au=Islam%2C+Tanvir%3BSrivastava%2C+Prashant+K%3BKumar%2C+Dinesh%3BPetropoulos%2C+George+P%3BDai%2C+Qiang%3BZhuo%2C+Lu&rft.aulast=Islam&rft.aufirst=Tanvir&rft.date=2016-06-01&rft.volume=82&rft.issue=2&rft.spage=845&rft.isbn=&rft.btitle=&rft.title=Natural+Hazards&rft.issn=0921030X&rft_id=info:doi/10.1007%2Fs11069-016-2221-4 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Number of references - 26 N1 - Last updated - 2016-08-03 N1 - SubjectsTermNotLitGenreText - Radiative transfer models; Humidity; Satellite instrumentation; Medium-range forecasting; Long-range forecasts; Data assimilation; Hurricane forecasting; Weather; Hurricanes; Data collection; Sensors; Quality control; Remote sensing; Radiative transfer; Satellites DO - http://dx.doi.org/10.1007/s11069-016-2221-4 ER - TY - JOUR T1 - ICRP Publication 131: Stem cell biology with respect to carcinogenesis aspects of radiological protection. AN - 1789037847; 26956677 AB - Current knowledge of stem cell characteristics, maintenance and renewal, evolution with age, location in 'niches', and radiosensitivity to acute and protracted exposures is reviewed regarding haematopoietic tissue, mammary gland, thyroid, digestive tract, lung, skin, and bone. The identity of the target cells for carcinogenesis continues to point to the more primitive and mostly quiescent stem cell population (able to accumulate the protracted sequence of mutations necessary to result in malignancy), and, in a few tissues, to daughter progenitor cells. Several biological processes could contribute to the protection of stem cells from mutation accumulation: (1) accurate DNA repair; (2) rapid induced death of injured stem cells; (3) retention of the intact parental strand during divisions in some tissues so that mutations are passed to the daughter differentiating cells; and (4) stem cell competition, whereby undamaged stem cells outcompete damaged stem cells for residence in the vital niche. DNA repair mainly operates within a few days of irradiation, while stem cell replications and competition require weeks or many months depending on the tissue type. This foundation is used to provide a biological insight to protection issues including the linear-non-threshold and relative risk models, differences in cancer risk between tissues, dose-rate effects, and changes in the risk of radiation carcinogenesis by age at exposure and attained age. © The International Society for Prosthetics and Orthotics. JF - Annals of the ICRP AU - Hendry, J H AU - Niwa, O AU - Barcellos-Hoff, M H AU - Globus, R K AU - Harrison, J D AU - Martin, M T AU - Seed, T M AU - Shay, J W AU - Story, M D AU - Suzuki, K AU - Yamashita, S AD - Christie Medical Physics and Bioengineering, Christie Hospital NHS Foundation Trust and University of Manchester, Manchester M20 4BX, UK jhendry2002uk@yahoo.com. ; Fukushima Medical University and Radiation Effects Research Foundation, Japan. ; Radiation Oncology and Cell Biology, New York University School of Medicine, USA. ; Bone and Signaling Laboratory, Space Biosciences Research Branch, NASA Ames Research Center, USA. ; Centre for Radiation, Chemical and Environmental Hazards, Health Protection Directorate, Public Health England, UK. ; Laboratoire de Genomique et Radiobiologie de la Kertinopoiese, CEA, France. ; Tech Micro Services Co., USA. ; Radiation Oncology, Simmons Cancer Center, University of Texas, Southwestern Medical Center, USA. ; Radiation Medical Sciences, Atomic Bomb Disease Institute, Nagasaki University, Japan. Y1 - 2016/06// PY - 2016 DA - June 2016 SP - 239 EP - 252 VL - 45 IS - 1 Suppl KW - Index Medicus KW - Stem cells KW - Mutations KW - Carcinogenesis KW - Radiobiology KW - Radiation risk KW - Humans KW - Dose-Response Relationship, Radiation KW - Risk Assessment KW - Radiation Exposure KW - Radiation Protection KW - Neoplasms, Radiation-Induced -- etiology KW - Stem Cells -- radiation effects UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789037847?accountid=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=Annals+of+the+ICRP&rft.atitle=ICRP+Publication+131%3A+Stem+cell+biology+with+respect+to+carcinogenesis+aspects+of+radiological+protection.&rft.au=Hendry%2C+J+H%3BNiwa%2C+O%3BBarcellos-Hoff%2C+M+H%3BGlobus%2C+R+K%3BHarrison%2C+J+D%3BMartin%2C+M+T%3BSeed%2C+T+M%3BShay%2C+J+W%3BStory%2C+M+D%3BSuzuki%2C+K%3BYamashita%2C+S&rft.aulast=Hendry&rft.aufirst=J&rft.date=2016-06-01&rft.volume=45&rft.issue=1+Suppl&rft.spage=239&rft.isbn=&rft.btitle=&rft.title=Annals+of+the+ICRP&rft.issn=1872-969X&rft_id=info:doi/10.1177%2F0146645315621849 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2017-01-17 N1 - Date created - 2016-05-12 N1 - Date revised - 2017-01-24 N1 - Last updated - 2017-01-25 DO - http://dx.doi.org/10.1177/0146645315621849 ER - TY - NEWS T1 - Industry Weighs in on Green Aviation Tech AN - 1789317029 JF - UPI Space Daily AU - Jim Schultz for NASA Aeronautics News Y1 - 2016/05/17/ PY - 2016 DA - 2016 May 17 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789317029?accountid=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=Industry+Weighs+in+on+Green+Aviation+Tech&rft.au=Jim+Schultz+for+NASA+Aeronautics+News&rft.aulast=Jim+Schultz+for+NASA+Aeronautics+News&rft.aufirst=&rft.date=2016-05-17&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 - 2016-05-17 ER - TY - JOUR T1 - Fugitive emissions from the Bakken Shale illustrate role of shale production in global ethane shift AN - 1824213313; 2016-083101 AB - Ethane is the second most abundant atmospheric hydrocarbon, exerts a strong influence on tropospheric ozone, and reduces the atmosphere's oxidative capacity. Global observations showed declining ethane abundances from 1984 to 2010, while a regional measurement indicated increasing levels since 2009, with the reason for this subject to speculation. The Bakken shale is an oil and gas-producing formation centered in North Dakota that experienced a rapid increase in production beginning in 2010. We use airborne data collected over the North Dakota portion of the Bakken shale in 2014 to calculate ethane emissions of 0.23 + or - 0.07 (2sigma ) Tg/yr, equivalent to 1-3% of total global sources. Emissions of this magnitude impact air quality via concurrent increases in tropospheric ozone. This recently developed large ethane source from one location illustrates the key role of shale oil and gas production in rising global ethane levels. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Kort, E A AU - Smith, M L AU - Murray, L T AU - Gvakharia, A AU - Brandt, A R AU - Peischl, J AU - Ryerson, T B AU - Sweeney, C AU - Travis, K Y1 - 2016/05/16/ PY - 2016 DA - 2016 May 16 SP - 4617 EP - 4623 PB - American Geophysical Union, Washington, DC VL - 43 IS - 9 SN - 0094-8276, 0094-8276 KW - United States KW - Bakken Formation KW - shale KW - Paleozoic KW - natural gas KW - aliphatic hydrocarbons KW - petroleum KW - ethane KW - alkanes KW - production KW - environmental effects KW - North Dakota KW - organic compounds KW - sedimentary rocks KW - upper Paleozoic KW - hydrocarbons KW - greenhouse gases KW - clastic rocks KW - 29A:Economic geology, geology of energy sources KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824213313?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Fugitive+emissions+from+the+Bakken+Shale+illustrate+role+of+shale+production+in+global+ethane+shift&rft.au=Kort%2C+E+A%3BSmith%2C+M+L%3BMurray%2C+L+T%3BGvakharia%2C+A%3BBrandt%2C+A+R%3BPeischl%2C+J%3BRyerson%2C+T+B%3BSweeney%2C+C%3BTravis%2C+K&rft.aulast=Kort&rft.aufirst=E&rft.date=2016-05-16&rft.volume=43&rft.issue=9&rft.spage=4617&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2016GL068703 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 47 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables, sketch maps N1 - Last updated - 2016-09-29 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; Bakken Formation; clastic rocks; environmental effects; ethane; greenhouse gases; hydrocarbons; natural gas; North Dakota; organic compounds; Paleozoic; petroleum; production; sedimentary rocks; shale; United States; upper Paleozoic DO - http://dx.doi.org/10.1002/2016GL068703 ER - TY - JOUR T1 - Pancreaticopericardial fistula: a rare complication of chronic pancreatitis AN - 1790896995 AB - Pancreaticopericardial fistula (PPF) is an extremely rare clinical problem encountered in patients with chronic pancreatitis. The diagnosis should be suspected if a patient presents with pericardial effusion on a background of chronic pancreatitis. Significantly raised amylase in the pericardial fluid offers an important clue for the diagnosis. CT is the initial imaging modality to look for pancreatic and pericardial changes. The therapeutic options include medical, endoscopic or surgical interventions. Medical and endoscopic therapies are the preferred modes of treatment while surgery is reserved for those who fail these measures. JF - BMJ Case Reports AU - Nasa, Mukesh AU - Patil, Gaurav AU - Choudhary, Narendra Singh AU - Puri, Rajesh Y1 - 2016/05/16/ PY - 2016 DA - 2016 May 16 CY - London PB - BMJ Publishing Group LTD VL - 2016 KW - Medical Sciences UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1790896995?accountid=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=BMJ+Case+Reports&rft.atitle=Pancreaticopericardial+fistula%3A+a+rare+complication+of+chronic+pancreatitis&rft.au=Nasa%2C+Mukesh%3BPatil%2C+Gaurav%3BChoudhary%2C+Narendra+Singh%3BPuri%2C+Rajesh&rft.aulast=Nasa&rft.aufirst=Mukesh&rft.date=2016-05-16&rft.volume=2016&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=BMJ+Case+Reports&rft.issn=&rft_id=info:doi/10.1136%2Fbcr-2016-215163 LA - English DB - ProQuest Central N1 - Copyright - Copyright: 2016 2016 BMJ Publishing Group Ltd N1 - Last updated - 2016-05-28 DO - http://dx.doi.org/10.1136/bcr-2016-215163 ER - TY - JOUR T1 - (super 13) C and (super 15) N fractionation of CH (sub 4) /N (sub 2) mixtures during photochemical aerosol formation; relevance to Titan AN - 1789754299; 2016-042977 JF - Icarus AU - Sebree, Joshua A AU - Stern, Jennifer C AU - Mandt, Kathleen E AU - Domagal-Goldman, Shawn D AU - Trainer, Melissa G Y1 - 2016/05/15/ PY - 2016 DA - 2016 May 15 SP - 421 EP - 428 PB - Elsevier, New York, NY VL - 270 SN - 0019-1035, 0019-1035 KW - tholins KW - isotope fractionation KW - icy satellites KW - irradiation KW - isotopes KW - aliphatic hydrocarbons KW - mass spectra KW - stable isotopes KW - nitrogen KW - laboratory studies KW - mixing KW - carbon KW - Titan Satellite KW - spectra KW - satellites KW - experimental studies KW - diffusion KW - N-15/N-14 KW - methane KW - condensation KW - isotope ratios KW - C-13/C-12 KW - photochemistry KW - atmosphere KW - alkanes KW - organic compounds KW - natural analogs KW - hydrocarbons KW - aerosols KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789754299?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=%28super+13%29+C+and+%28super+15%29+N+fractionation+of+CH+%28sub+4%29+%2FN+%28sub+2%29+mixtures+during+photochemical+aerosol+formation%3B+relevance+to+Titan&rft.au=Sebree%2C+Joshua+A%3BStern%2C+Jennifer+C%3BMandt%2C+Kathleen+E%3BDomagal-Goldman%2C+Shawn+D%3BTrainer%2C+Melissa+G&rft.aulast=Sebree&rft.aufirst=Joshua&rft.date=2016-05-15&rft.volume=270&rft.issue=&rft.spage=421&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.04.016 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 36 N1 - PubXState - NY N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2016-05-19 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - aerosols; aliphatic hydrocarbons; alkanes; atmosphere; C-13/C-12; carbon; condensation; diffusion; experimental studies; hydrocarbons; icy satellites; irradiation; isotope fractionation; isotope ratios; isotopes; laboratory studies; mass spectra; methane; mixing; N-15/N-14; natural analogs; nitrogen; organic compounds; photochemistry; satellites; spectra; stable isotopes; tholins; Titan Satellite DO - http://dx.doi.org/10.1016/j.icarus.2015.04.016 ER - TY - JOUR T1 - Vertical structure and optical properties of Titan's aerosols from radiance measurements made inside and outside the atmosphere AN - 1789753811; 2016-042975 JF - Icarus AU - Doose, Lyn R AU - Karkoschka, Erich AU - Tomasko, Martin G AU - Anderson, Carrie M Y1 - 2016/05/15/ PY - 2016 DA - 2016 May 15 SP - 355 EP - 375 PB - Elsevier, New York, NY VL - 270 SN - 0019-1035, 0019-1035 KW - Descent Imager/Spectral Radiometer KW - albedo KW - icy satellites KW - imagery KW - methane KW - altitude KW - aliphatic hydrocarbons KW - atmosphere KW - alkanes KW - geometry KW - wavelength KW - models KW - organic compounds KW - Cassini-Huygens Mission KW - optical properties KW - hydrocarbons KW - Titan Satellite KW - aerosols KW - satellites KW - radiative transfer KW - optical depth KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789753811?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Vertical+structure+and+optical+properties+of+Titan%27s+aerosols+from+radiance+measurements+made+inside+and+outside+the+atmosphere&rft.au=Doose%2C+Lyn+R%3BKarkoschka%2C+Erich%3BTomasko%2C+Martin+G%3BAnderson%2C+Carrie+M&rft.aulast=Doose&rft.aufirst=Lyn&rft.date=2016-05-15&rft.volume=270&rft.issue=&rft.spage=355&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.09.039 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 40 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-05-19 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - aerosols; albedo; aliphatic hydrocarbons; alkanes; altitude; atmosphere; Cassini-Huygens Mission; Descent Imager/Spectral Radiometer; geometry; hydrocarbons; icy satellites; imagery; methane; models; optical depth; optical properties; organic compounds; radiative transfer; satellites; Titan Satellite; wavelength DO - http://dx.doi.org/10.1016/j.icarus.2015.09.039 ER - TY - JOUR T1 - Alluvial fan morphology, distribution and formation on Titan AN - 1789753624; 2016-042969 JF - Icarus AU - Birch, Sam P D AU - Hayes, Alexander G AU - Howard, Alan D AU - Moore, J M AU - Radebaugh, Jani Y1 - 2016/05/15/ PY - 2016 DA - 2016 May 15 SP - 238 EP - 247 PB - Elsevier, New York, NY VL - 270 SN - 0019-1035, 0019-1035 KW - bedload KW - icy satellites KW - general circulation models KW - polar regions KW - stream transport KW - equatorial region KW - sediment transport KW - atmospheric precipitation KW - distribution KW - morphology KW - Cassini-Huygens Mission KW - transport KW - SAR KW - coarse-grained materials KW - alluvial fans KW - drainage basins KW - Titan Satellite KW - latitude KW - wind transport KW - satellites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789753624?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Alluvial+fan+morphology%2C+distribution+and+formation+on+Titan&rft.au=Birch%2C+Sam+P+D%3BHayes%2C+Alexander+G%3BHoward%2C+Alan+D%3BMoore%2C+J+M%3BRadebaugh%2C+Jani&rft.aulast=Birch&rft.aufirst=Sam+P&rft.date=2016-05-15&rft.volume=270&rft.issue=&rft.spage=238&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.02.013 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 72 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables, sketch maps N1 - Last updated - 2016-05-19 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - alluvial fans; atmospheric precipitation; bedload; Cassini-Huygens Mission; coarse-grained materials; distribution; drainage basins; equatorial region; general circulation models; icy satellites; latitude; morphology; polar regions; SAR; satellites; sediment transport; stream transport; Titan Satellite; transport; wind transport DO - http://dx.doi.org/10.1016/j.icarus.2016.02.013 ER - TY - JOUR T1 - Formation of gravel pavements during fluvial erosion as an explanation for persistence of ancient cratered terrain on Titan and Mars AN - 1789752826; 2016-042961 JF - Icarus AU - Howard, Alan D AU - Breton, Sylvain AU - Moore, Jeffrey M Y1 - 2016/05/15/ PY - 2016 DA - 2016 May 15 SP - 100 EP - 113 PB - Elsevier, New York, NY VL - 270 SN - 0019-1035, 0019-1035 KW - icy satellites KW - impact features KW - erosion KW - Mars KW - erosion rates KW - physical weathering KW - gravel KW - transport KW - coarse-grained materials KW - gravel-bed streams KW - sediments KW - Titan Satellite KW - satellites KW - sediment transport KW - clastic sediments KW - grain size KW - channels KW - water erosion KW - impacts KW - weathering KW - terrestrial planets KW - planets KW - fluvial features KW - terrestrial comparison KW - streams KW - impact craters KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789752826?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Formation+of+gravel+pavements+during+fluvial+erosion+as+an+explanation+for+persistence+of+ancient+cratered+terrain+on+Titan+and+Mars&rft.au=Howard%2C+Alan+D%3BBreton%2C+Sylvain%3BMoore%2C+Jeffrey+M&rft.aulast=Howard&rft.aufirst=Alan&rft.date=2016-05-15&rft.volume=270&rft.issue=&rft.spage=100&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.05.034 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 115 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Includes appendix N1 - Last updated - 2016-05-19 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - channels; clastic sediments; coarse-grained materials; erosion; erosion rates; fluvial features; grain size; gravel; gravel-bed streams; icy satellites; impact craters; impact features; impacts; Mars; physical weathering; planets; regolith; satellites; sediment transport; sediments; streams; terrestrial comparison; terrestrial planets; Titan Satellite; transport; water erosion; weathering DO - http://dx.doi.org/10.1016/j.icarus.2015.05.034 ER - TY - JOUR T1 - Temperate Earth-sized planets transiting a nearby ultracool dwarf star AN - 1800392286; 2016-056575 JF - Nature (London) AU - Gillon, Michael AU - Jehin, Emmanuel AU - Lederer, Susan M AU - Delrez, Laetitia AU - de Wit, Julien AU - Burdanov, Artem AU - van Grootel, Valerie AU - Burgasser, Adam J AU - Triaud, Amaury H M J AU - Opitom, Cyrielle AU - Demory, Brice-Olivier AU - Sahu, Devendra K AU - Gagliuffi, Daniella Bardalez AU - Magain, Pierre AU - Queloz, Didier Y1 - 2016/05/12/ PY - 2016 DA - 2016 May 12 SP - 221 EP - 224 PB - Macmillan Journals, London VL - 533 IS - 7602 SN - 0028-0836, 0028-0836 KW - irradiation KW - extrasolar planets KW - TRAPPIST Program KW - orbits KW - planetesimals KW - protoplanetary disk KW - size KW - brightness KW - planets KW - habitability KW - stars KW - terrestrial comparison KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800392286?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Temperate+Earth-sized+planets+transiting+a+nearby+ultracool+dwarf+star&rft.au=Gillon%2C+Michael%3BJehin%2C+Emmanuel%3BLederer%2C+Susan+M%3BDelrez%2C+Laetitia%3Bde+Wit%2C+Julien%3BBurdanov%2C+Artem%3Bvan+Grootel%2C+Valerie%3BBurgasser%2C+Adam+J%3BTriaud%2C+Amaury+H+M+J%3BOpitom%2C+Cyrielle%3BDemory%2C+Brice-Olivier%3BSahu%2C+Devendra+K%3BGagliuffi%2C+Daniella+Bardalez%3BMagain%2C+Pierre%3BQueloz%2C+Didier&rft.aulast=Gillon&rft.aufirst=Michael&rft.date=2016-05-12&rft.volume=533&rft.issue=7602&rft.spage=221&rft.isbn=&rft.btitle=&rft.title=Nature+%28London%29&rft.issn=00280836&rft_id=info:doi/10.1038%2Fnature17448 L2 - http://www.nature.com/nature/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 30 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2016-06-30 N1 - CODEN - NATUAS N1 - SubjectsTermNotLitGenreText - brightness; extrasolar planets; habitability; irradiation; orbits; planetesimals; planets; protoplanetary disk; size; stars; terrestrial comparison; TRAPPIST Program DO - http://dx.doi.org/10.1038/nature17448 ER - TY - NEWS T1 - NASA Helps Forecast Zika Risk AN - 1787489718 JF - UPI Space Daily AU - Molly Porter for NASA Earth News Y1 - 2016/05/09/ PY - 2016 DA - 2016 May 09 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1787489718?accountid=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+Helps+Forecast+Zika+Risk&rft.au=Molly+Porter+for+NASA+Earth+News&rft.aulast=Molly+Porter+for+NASA+Earth+News&rft.aufirst=&rft.date=2016-05-09&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 - 2016-05-09 ER - TY - JOUR T1 - Assimilation of gridded terrestrial water storage observations from GRACE into a land surface model AN - 1832728298; 2016-092607 AB - Observations of terrestrial water storage (TWS) from the Gravity Recovery and Climate Experiment (GRACE) satellite mission have a coarse resolution in time (monthly) and space (roughly 150,000 km (super 2) at midlatitudes) and vertically integrate all water storage components over land, including soil moisture and groundwater. Data assimilation can be used to horizontally downscale and vertically partition GRACE-TWS observations. This work proposes a variant of existing ensemble-based GRACE-TWS data assimilation schemes. The new algorithm differs in how the analysis increments are computed and applied. Existing schemes correlate the uncertainty in the modeled monthly TWS estimates with errors in the soil moisture profile state variables at a single instant in the month and then apply the increment either at the end of the month or gradually throughout the month. The proposed new scheme first computes increments for each day of the month and then applies the average of those increments at the beginning of the month. The new scheme therefore better reflects submonthly variations in TWS errors. The new and existing schemes are investigated here using gridded GRACE-TWS observations. The assimilation results are validated at the monthly time scale, using in situ measurements of groundwater depth and soil moisture across the U.S. The new assimilation scheme yields improved (although not in a statistically significant sense) skill metrics for groundwater compared to the open-loop (no assimilation) simulations and compared to the existing assimilation schemes. A smaller impact is seen for surface and root-zone soil moisture, which have a shorter memory and receive smaller increments from TWS assimilation than groundwater. These results motivate future efforts to combine GRACE-TWS observations with observations that are more sensitive to surface soil moisture, such as L-band brightness temperature observations from Soil Moisture Ocean Salinity (SMOS) or Soil Moisture Active Passive (SMAP). Finally, we demonstrate that the scaling parameters that are applied to the GRACE observations prior to assimilation should be consistent with the land surface model that is used within the assimilation system. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Water Resources Research AU - Girotto, Manuela AU - de Lannoy, Gabrielle J M AU - Reichle, Rolf H AU - Rodell, Matthew Y1 - 2016/05// PY - 2016 DA - May 2016 SP - 4164 EP - 4183 PB - American Geophysical Union, Washington, DC VL - 52 IS - 5 SN - 0043-1397, 0043-1397 KW - United States KW - soils KW - hydrology KW - water storage KW - moisture KW - data processing KW - unsaturated zone KW - GRACE KW - equations KW - satellite methods KW - observations KW - ground water KW - mathematical methods KW - ground-surface temperature KW - remote sensing KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832728298?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Assimilation+of+gridded+terrestrial+water+storage+observations+from+GRACE+into+a+land+surface+model&rft.au=Girotto%2C+Manuela%3Bde+Lannoy%2C+Gabrielle+J+M%3BReichle%2C+Rolf+H%3BRodell%2C+Matthew&rft.aulast=Girotto&rft.aufirst=Manuela&rft.date=2016-05-01&rft.volume=52&rft.issue=5&rft.spage=4164&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1002%2F2015WR018417 L2 - http://www.agu.org/journals/wr/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 59 N1 - PubXState - DC N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2016-10-27 N1 - CODEN - WRERAQ N1 - SubjectsTermNotLitGenreText - data processing; equations; GRACE; ground water; ground-surface temperature; hydrology; mathematical methods; moisture; observations; remote sensing; satellite methods; soils; United States; unsaturated zone; water storage DO - http://dx.doi.org/10.1002/2015WR018417 ER - TY - JOUR T1 - Unlocking the full potential of Earth observation during the 2015 Texas flood disaster AN - 1832727742; 2016-092557 AB - Intense rainfall during late April and early May 2015 in Texas and Oklahoma led to widespread and sustained flooding in several river basins. Texas state agencies relevant to emergency response were activated when severe weather then ensued for 6 weeks from 8 May until 19 June following Tropical Storm Bill. An international team of scientists and flood response experts assembled and collaborated with decision-making authorities for user-driven high-resolution satellite acquisitions over the most critical areas; while experimental automated flood mapping techniques provided daily ongoing monitoring. This allowed mapping of flood inundation from an unprecedented number of spaceborne and airborne images. In fact, a total of 27,174 images have been ingested to the USGS Hazards Data Distribution System (HDDS) Explorer, except for the SAR images used. Based on the Texas flood use case, we describe the success of this effort as well as the limitations in fulfilling the needs of the decision-makers, and reflect upon these. In order to unlock the full potential for Earth observation data in flood disaster response, we suggest in a call for action (i) stronger collaboration from the onset between agencies, product developers, and decision-makers; (ii) quantification of uncertainties when combining data from different sources in order to augment information content; (iii) include a default role for the end-user in satellite acquisition planning; and (iv) proactive assimilation of methodologies and tools into the mandated agencies. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Water Resources Research AU - Schumann, G J P AU - Frye, S AU - Wells, G AU - Adler, R AU - Brakenridge, R AU - Bolten, J AU - Murray, J AU - Slayback, D AU - Policelli, F AU - Kirschbaum, D AU - Wu, H AU - Cappelaere, P AU - Howard, T AU - Flamig, Z AU - Clark, R AU - Stough, T AU - Chini, M AU - Matgen, P AU - Green, D AU - Jones, B Y1 - 2016/05// PY - 2016 DA - May 2016 SP - 3288 EP - 3293 PB - American Geophysical Union, Washington, DC VL - 52 IS - 5 SN - 0043-1397, 0043-1397 KW - United States KW - Tropical Storm Bill KW - imagery KW - risk management KW - geologic hazards KW - Texas KW - decision-making KW - atmospheric precipitation KW - satellite methods KW - Oklahoma KW - SAR KW - natural hazards KW - floods KW - risk assessment KW - storms KW - uncertainty KW - rain KW - remote sensing KW - 21:Hydrogeology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832727742?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Unlocking+the+full+potential+of+Earth+observation+during+the+2015+Texas+flood+disaster&rft.au=Schumann%2C+G+J+P%3BFrye%2C+S%3BWells%2C+G%3BAdler%2C+R%3BBrakenridge%2C+R%3BBolten%2C+J%3BMurray%2C+J%3BSlayback%2C+D%3BPolicelli%2C+F%3BKirschbaum%2C+D%3BWu%2C+H%3BCappelaere%2C+P%3BHoward%2C+T%3BFlamig%2C+Z%3BClark%2C+R%3BStough%2C+T%3BChini%2C+M%3BMatgen%2C+P%3BGreen%2C+D%3BJones%2C+B&rft.aulast=Schumann&rft.aufirst=G+J&rft.date=2016-05-01&rft.volume=52&rft.issue=5&rft.spage=3288&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1002%2F2015WR018428 L2 - http://www.agu.org/journals/wr/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 10 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2016-10-27 N1 - CODEN - WRERAQ N1 - SubjectsTermNotLitGenreText - atmospheric precipitation; decision-making; floods; geologic hazards; imagery; natural hazards; Oklahoma; rain; remote sensing; risk assessment; risk management; SAR; satellite methods; storms; Texas; Tropical Storm Bill; uncertainty; United States DO - http://dx.doi.org/10.1002/2015WR018428 ER - TY - JOUR T1 - Erratum to: Groundwater storage changes; present status from GRACE observations AN - 1832608985; 776393-8 JF - Surveys in Geophysics AU - Chen, Jianli AU - Famiglietti, James S AU - Scanlon, Bridget R AU - Rodell, Matthew Y1 - 2016/05// PY - 2016 DA - May 2016 SP - 701 PB - Springer, Dordrecht VL - 37 IS - 3 SN - 0169-3298, 0169-3298 KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832608985?accountid=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=Surveys+in+Geophysics&rft.atitle=Erratum+to%3A+Groundwater+storage+changes%3B+present+status+from+GRACE+observations&rft.au=Chen%2C+Jianli%3BFamiglietti%2C+James+S%3BScanlon%2C+Bridget+R%3BRodell%2C+Matthew&rft.aulast=Chen&rft.aufirst=Jianli&rft.date=2016-05-01&rft.volume=37&rft.issue=3&rft.spage=701&rft.isbn=&rft.btitle=&rft.title=Surveys+in+Geophysics&rft.issn=01693298&rft_id=info:doi/10.1007%2Fs10712-016-9370-6 L2 - http://www.springerlink.com/(xfpu0bn4myxx3njya4gn4s55)/app/home/journal.asp?referrer=parent&backto=linkingpublicationresults,1:103000,1 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 Springer Verlag, Berlin, Federal Republic of Germany N1 - SuppNotes - The online version of the original article can be found under doi:10.1007/s10712-015-9332-4. http://dx.doi.org/10.1007/s10712-015-9332-4. The online version of the original article can be found at 10.1007/s10712-015-9332-4 http://dx.doi.org/10.1007/s10712-015-9332-4. N1 - Last updated - 2017-01-24 DO - http://dx.doi.org/10.1007/s10712-016-9370-6 ER - TY - JOUR T1 - Performance benchmarks for a next generation numerical dynamo model AN - 1828850146; 2016-086883 AB - Numerical simulations of the geodynamo have successfully represented many observable characteristics of the geomagnetic field, yielding insight into the fundamental processes that generate magnetic fields in the Earth's core. Because of limited spatial resolution, however, the diffusivities in numerical dynamo models are much larger than those in the Earth's core, and consequently, questions remain about how realistic these models are. The typical strategy used to address this issue has been to continue to increase the resolution of these quasi-laminar models with increasing computational resources, thus pushing them toward more realistic parameter regimes. We assess which methods are most promising for the next generation of supercomputers, which will offer access to O(10 (super 6) ) processor cores for large problems. Here we report performance and accuracy benchmarks from 15 dynamo codes that employ a range of numerical and parallelization methods. Computational performance is assessed on the basis of weak and strong scaling behavior up to 16,384 processor cores. Extrapolations of our weak-scaling results indicate that dynamo codes that employ two-dimensional or three-dimensional domain decompositions can perform efficiently on up to approximately 10 (super 6) processor cores, paving the way for more realistic simulations in the next model generation. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Geochemistry, Geophysics, Geosystems - G3 AU - Matsui, Hiroaki AU - Heien, Eric AU - Aubert, Julien AU - Aurnou, Jonathan M AU - Avery, Margaret AU - Brown, Ben AU - Buffett, Bruce A AU - Busse, Friedrich AU - Christensen, Ulrich R AU - Davies, Christopher J AU - Featherstone, Nicholas AU - Gastine, Thomas AU - Glatzmaier, Gary A AU - Gubbins, David AU - Guermond, Jean-Luc AU - Hayashi, Yoshi-Yuki AU - Hollerbach, Rainer AU - Hwang, Lorraine J AU - Jackson, Andrew AU - Jones, Chris A AU - Jiang, Weiyuan AU - Kellogg, Louise H AU - Kuang, Weijia AU - Landeau, Maylis AU - Marti, Philippe AU - Olson, Peter AU - Ribeiro, Adolfo AU - Sasaki, Youhei AU - Schaeffer, Nathanael AU - Simitev, Radostin D AU - Sheyko, Andrey AU - Silva, Luis AU - Stanley, Sabine AU - Takahashi, Futoshi AU - Takehiro, Shin-ichi AU - Wicht, Johannes AU - Willis, Ashley P Y1 - 2016/05// PY - 2016 DA - May 2016 SP - 1586 EP - 1607 PB - American Geophysical Union and The Geochemical Society VL - 17 IS - 5 KW - interior KW - Earth KW - numerical models KW - three-dimensional models KW - dynamos KW - data processing KW - equations KW - magnetic field KW - two-dimensional models KW - theoretical studies KW - digital simulation KW - theoretical models KW - core KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1828850146?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Performance+benchmarks+for+a+next+generation+numerical+dynamo+model&rft.au=Matsui%2C+Hiroaki%3BHeien%2C+Eric%3BAubert%2C+Julien%3BAurnou%2C+Jonathan+M%3BAvery%2C+Margaret%3BBrown%2C+Ben%3BBuffett%2C+Bruce+A%3BBusse%2C+Friedrich%3BChristensen%2C+Ulrich+R%3BDavies%2C+Christopher+J%3BFeatherstone%2C+Nicholas%3BGastine%2C+Thomas%3BGlatzmaier%2C+Gary+A%3BGubbins%2C+David%3BGuermond%2C+Jean-Luc%3BHayashi%2C+Yoshi-Yuki%3BHollerbach%2C+Rainer%3BHwang%2C+Lorraine+J%3BJackson%2C+Andrew%3BJones%2C+Chris+A%3BJiang%2C+Weiyuan%3BKellogg%2C+Louise+H%3BKuang%2C+Weijia%3BLandeau%2C+Maylis%3BMarti%2C+Philippe%3BOlson%2C+Peter%3BRibeiro%2C+Adolfo%3BSasaki%2C+Youhei%3BSchaeffer%2C+Nathanael%3BSimitev%2C+Radostin+D%3BSheyko%2C+Andrey%3BSilva%2C+Luis%3BStanley%2C+Sabine%3BTakahashi%2C+Futoshi%3BTakehiro%2C+Shin-ichi%3BWicht%2C+Johannes%3BWillis%2C+Ashley+P&rft.aulast=Matsui&rft.aufirst=Hiroaki&rft.date=2016-05-01&rft.volume=17&rft.issue=5&rft.spage=1586&rft.isbn=&rft.btitle=&rft.title=Geochemistry%2C+Geophysics%2C+Geosystems+-+G3&rft.issn=1525-2027&rft_id=info:doi/10.1002%2F2015GC006159 L2 - http://g-cubed.org LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom | Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - Document feature - illus. incl. tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-10-25 N1 - SubjectsTermNotLitGenreText - core; data processing; digital simulation; dynamos; Earth; equations; interior; magnetic field; numerical models; theoretical models; theoretical studies; three-dimensional models; two-dimensional models DO - http://dx.doi.org/10.1002/2015GC006159 ER - TY - JOUR T1 - Holocene accumulation and ice flow near the West Antarctic ice sheet divide ice core site AN - 1824214338; 2016-085023 AB - The West Antarctic Ice Sheet Divide Core (WDC) provided a high-resolution climate record from near the Ross-Amundsen Divide in Central West Antarctica. In addition, radar-detected internal layers in the vicinity of the WDC site have been dated directly from the ice core to provide spatial variations in the age structure of the region. Using these two data sets together, we first infer a high-resolution Holocene accumulation-rate history from 9.2 kyr of the ice-core timescale and then confirm that this climate history is consistent with internal layers upstream of the core site. Even though the WDC was drilled only 24 km from the modern ice divide, advection of ice from upstream must be taken into account. We evaluate histories of accumulation rate by using a flowband model to generate internal layers that we compare to observed layers. Results show that the centennially averaged accumulation rate was over 20% lower than modern at 9.2 kyr before present (B.P.), increased by 40% from 9.2 to 2.3 kyr B.P., and decreased by at least 10% over the past 2 kyr B.P. to the modern values; these Holocene accumulation-rate changes in Central West Antarctica are larger than changes inferred from East Antarctic ice-core records. Despite significant changes in accumulation rate, throughout the Holocene the regional accumulation pattern has likely remained similar to today, and the ice-divide position has likely remained on average within 5 km of its modern position. Continent-scale ice-sheet models used for reconstructions of West Antarctic ice volume should incorporate this accumulation history. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Earth Surface AU - Koutnik, Michelle R AU - Fudge, T J AU - Conway, Howard AU - Waddington, Edwin D AU - Neumann, Thomas A AU - Cuffey, Kurt M AU - Buizert, Christo AU - Taylor, Kendrick C Y1 - 2016/05// PY - 2016 DA - May 2016 SP - 907 EP - 924 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 121 IS - 5 SN - 2169-9003, 2169-9003 KW - West Antarctica KW - geophysical surveys KW - paleoclimatology KW - Holocene KW - Cenozoic KW - ice KW - West Antarctic ice sheet KW - velocity KW - thickness KW - high-resolution methods KW - ice cores KW - patterns KW - Quaternary KW - geophysical methods KW - radar methods KW - glaciers KW - Ross-Amundsen Divide KW - ice sheets KW - geometry KW - time scales KW - models KW - Antarctic ice sheet KW - Antarctica KW - surveys KW - geophysical profiles KW - reconstruction KW - glacial geology KW - Amundsen Sea KW - Ross Ice Shelf KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824214338?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Holocene+accumulation+and+ice+flow+near+the+West+Antarctic+ice+sheet+divide+ice+core+site&rft.au=Koutnik%2C+Michelle+R%3BFudge%2C+T+J%3BConway%2C+Howard%3BWaddington%2C+Edwin+D%3BNeumann%2C+Thomas+A%3BCuffey%2C+Kurt+M%3BBuizert%2C+Christo%3BTaylor%2C+Kendrick+C&rft.aulast=Koutnik&rft.aufirst=Michelle&rft.date=2016-05-01&rft.volume=121&rft.issue=5&rft.spage=907&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Earth+Surface&rft.issn=21699003&rft_id=info:doi/10.1002%2F2015JF003668 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9011/issues?year=2013 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 70 N1 - PubXState - DC N1 - Document feature - illus. incl. sects., sketch maps N1 - Last updated - 2016-09-29 N1 - SubjectsTermNotLitGenreText - Amundsen Sea; Antarctic ice sheet; Antarctica; Cenozoic; geometry; geophysical methods; geophysical profiles; geophysical surveys; glacial geology; glaciers; high-resolution methods; Holocene; ice; ice cores; ice sheets; models; paleoclimatology; patterns; Quaternary; radar methods; reconstruction; Ross Ice Shelf; Ross-Amundsen Divide; surveys; thickness; time scales; velocity; West Antarctic ice sheet; West Antarctica DO - http://dx.doi.org/10.1002/2015JF003668 ER - TY - JOUR T1 - Extending "Deep Blue" aerosol retrieval coverage to cases of absorbing aerosols above clouds: Sensitivity analysis and first case studies AN - 1808721548; PQ0003230515 AB - Cases of absorbing aerosols above clouds (AACs), such as smoke or mineral dust, are omitted from most routinely processed space-based aerosol optical depth (AOD) data products, including those from the Moderate Resolution Imaging Spectroradiometer (MODIS). This study presents a sensitivity analysis and preliminary algorithm to retrieve above-cloud AOD and liquid cloud optical depth (COD) for AAC cases from MODIS or similar sensors, for incorporation into a future version of the "Deep Blue" AOD data product. Detailed retrieval simulations suggest that these sensors should be able to determine AAC AOD with a typical level of uncertainty 25-50% (with lower uncertainties for more strongly absorbing aerosol types) and COD with an uncertainty 10-20%, if an appropriate aerosol optical model is known beforehand. Errors are larger, particularly if the aerosols are only weakly absorbing, if the aerosol optical properties are not known, and the appropriate model to use must also be retrieved. Actual retrieval errors are also compared to uncertainty envelopes obtained through the optimal estimation (OE) technique; OE-based uncertainties are found to be generally reasonable for COD but larger than actual retrieval errors for AOD, due in part to difficulties in quantifying the degree of spectral correlation of forward model error. The algorithm is also applied to two MODIS scenes (one smoke and one dust) for which near-coincident NASA Ames Airborne Tracking Sun photometer (AATS) data were available to use as a ground truth AOD data source, and found to be in good agreement, demonstrating the validity of the technique with real observations. Key Points * Absorbing aerosols above clouds are an important data gap * Retrieval algorithm developed for MODIS-like sensors * Validation presented using two case studies with airborne data JF - Journal of Geophysical Research: Atmospheres AU - Sayer, A M AU - Hsu, N C AU - Bettenhausen, C AU - Lee, J AU - Redemann, J AU - Schmid, B AU - Shinozuka, Y AD - NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2016/05// PY - 2016 DA - May 2016 SP - 4830 EP - 4854 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 121 IS - 9 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Sensors KW - Algorithms KW - Correlations KW - Dust KW - Fish (cod family) KW - MODIS (Moderate Resolution Imaging Spectrometer) KW - Modelling KW - Atmospheric particulates KW - Aerosols KW - Mathematical models KW - Case Studies KW - Errors KW - Dusts KW - Tracking KW - Model Studies KW - Clouds KW - Smoke KW - Satellite data KW - Sensitivity analysis KW - Optical properties of aerosols KW - Numerical simulations KW - Cloud optical depth KW - Photometers KW - Optical depth of aerosols KW - Eolian dust KW - Q2 09243:Structure, mechanics and thermodynamics KW - M2 551.593:Optical (551.593) KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808721548?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=Extending+%22Deep+Blue%22+aerosol+retrieval+coverage+to+cases+of+absorbing+aerosols+above+clouds%3A+Sensitivity+analysis+and+first+case+studies&rft.au=Sayer%2C+A+M%3BHsu%2C+N+C%3BBettenhausen%2C+C%3BLee%2C+J%3BRedemann%2C+J%3BSchmid%2C+B%3BShinozuka%2C+Y&rft.aulast=Sayer&rft.aufirst=A&rft.date=2016-05-01&rft.volume=121&rft.issue=9&rft.spage=4830&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2015JD024729 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-07-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Smoke; Atmospheric particulates; Aerosols; Mathematical models; Sensors; Tracking; Dust; Eolian dust; Modelling; Clouds; Satellite data; Numerical simulations; Optical properties of aerosols; Sensitivity analysis; Cloud optical depth; Correlations; Photometers; Algorithms; Optical depth of aerosols; MODIS (Moderate Resolution Imaging Spectrometer); Case Studies; Fish (cod family); Errors; Dusts; Model Studies DO - http://dx.doi.org/10.1002/2015JD024729 ER - TY - JOUR T1 - Sensitivity of Amazonian TOA flux diurnal cycle composite monthly variability to choice of reanalysis AN - 1808718916; PQ0003230550 AB - Amazonian deep convection experiences a strong diurnal cycle driven by the cycle in surface sensible heat flux, which contributes to a significant diurnal cycle in the top of the atmosphere (TOA) radiative flux. Even when accounting for seasonal variability, the TOA flux diurnal cycle varies significantly on the monthly timescale. Previous work shows evidence supporting a connection between variability in the convective and radiative cycles, likely modulated by variability in monthly atmospheric state (e.g., convective instability). The hypothesized relationships are further investigated with regression analysis of the radiative diurnal cycle and atmospheric state using additional meteorological variables representing convective instability and upper tropospheric humidity. The results are recalculated with three different reanalyses to test the reliability of the results. The radiative diurnal cycle sensitivity to upper tropospheric humidity is about equal in magnitude to that of convective instability. In addition, the results are recalculated with the data subdivided into the wet and dry seasons. Overall, clear-sky radiative effects have a dominant role in radiative diurnal cycle variability during the dry season. Because of this, even in a convectively active region, the clear-sky radiative effects must be accounted for in order to fully explain the monthly variability in diurnal cycle. Finally, while there is general agreement between the different reanalysis-based results when examining the full data time domain (without regard to time of year), there are significant disagreements when the data are divided into wet and dry seasons. The questionable reliability of reanalysis data is a major limitation. Key Points * Upper tropospheric humidity alters the TOA flux diurnal cycle as strongly as vertical instability * Clear-sky effects control TOA flux diurnal amplitude, while cloud forcing controls timing * Disagreement in reanalysis monthly variability greatly affects assessment of TOA flux sensitivity JF - Journal of Geophysical Research: Atmospheres AU - Dodson, JBrant AU - Taylor, Patrick C AD - NASA Langley Research Center, Hampton, Virginia, USA. Y1 - 2016/05// PY - 2016 DA - May 2016 SP - 4404 EP - 4428 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 121 IS - 9 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Convection KW - Regression Analysis KW - Variability KW - Sensible heat transfer KW - Convection development KW - Data reanalysis KW - Assessments KW - Regression analysis KW - Seasonal variability KW - Sensible heat flux KW - Timing KW - Heat flux KW - Atmospheric variability KW - Humidity KW - Troposphere KW - Convective instability KW - Clouds KW - Upper tropospheric humidity KW - Heat KW - Convective activity KW - Atmospheric forcing KW - Dry season KW - Fluctuations KW - Instability KW - Q2 09243:Structure, mechanics and thermodynamics KW - M2 551.558:Vertical Air Motion (551.558) KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808718916?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=Sensitivity+of+Amazonian+TOA+flux+diurnal+cycle+composite+monthly+variability+to+choice+of+reanalysis&rft.au=Dodson%2C+JBrant%3BTaylor%2C+Patrick+C&rft.aulast=Dodson&rft.aufirst=JBrant&rft.date=2016-05-01&rft.volume=121&rft.issue=9&rft.spage=4404&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2015JD024567 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-07-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Convection; Atmospheric forcing; Sensible heat transfer; Troposphere; Humidity; Dry season; Heat flux; Atmospheric variability; Convective instability; Convection development; Data reanalysis; Clouds; Upper tropospheric humidity; Convective activity; Regression analysis; Seasonal variability; Sensible heat flux; Instability; Timing; Regression Analysis; Variability; Assessments; Heat; Fluctuations DO - http://dx.doi.org/10.1002/2015JD024567 ER - TY - JOUR T1 - Estimating nocturnal opaque ice cloud optical depth from MODIS multispectral infrared radiances using a neural network method AN - 1808716699; PQ0003230537 AB - Retrieval of ice cloud properties using IR measurements has a distinct advantage over the visible and near-IR techniques by providing consistent monitoring regardless of solar illumination conditions. Historically, the IR bands at 3.7, 6.7, 11.0, and 12.0 mu m have been used to infer ice cloud parameters by various methods, but the reliable retrieval of ice cloud optical depth tau is limited to nonopaque cirrus with tau <8. The Ice Cloud Optical Depth from Infrared using a Neural network (ICODIN) method is developed in this paper by training Moderate Resolution Imaging Spectroradiometer (MODIS) radiances at 3.7, 6.7, 11.0, and 12.0 mu m against CloudSat-estimated tau during the nighttime using 2months of matched global data from 2007. An independent data set comprising observations from the same 2months of 2008 was used to validate the ICODIN. One 4-channel and three 3-channel versions of the ICODIN were tested. The training and validation results show that IR channels can be used to estimate ice cloud tau up to 150 with correlations above 78% and 69% for all clouds and only opaque ice clouds, respectively. However, tau for the deepest clouds is still underestimated in many instances. The corresponding RMS differences relative to CloudSat are ~100 and ~72%. If the opaque clouds are properly identified with the IR methods, the RMS differences in the retrieved optical depths are ~62%. The 3.7 mu m channel appears to be most sensitive to optical depth changes but is constrained by poor precision at low temperatures. A method for estimating total optical depth is explored for estimation of cloud water path in the future. Factors affecting the uncertainties and potential improvements are discussed. With improved techniques for discriminating between opaque and semitransparent ice clouds, the method can ultimately improve cloud property monitoring over the entire diurnal cycle. Key Points * Information about nocturnal opaque ice cloud optical depth available in multispectral infrared data * Neural network algorithm developed to retrieve ice cloud optical depth from nighttime imager data * Total cloud optical depth can be estimated from neural net ice COD using a parameterization JF - Journal of Geophysical Research: Atmospheres AU - Minnis, Patrick AU - Hong, Gang AU - Sun-Mack, Szedung AU - Smith, William L AU - Chen, Yan AU - Miller, Steven D AD - NASA Langley Research Center, Hampton, Virginia, USA. Y1 - 2016/05// PY - 2016 DA - May 2016 SP - 4907 EP - 4932 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 121 IS - 9 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Correlations KW - Algorithms KW - Low temperatures KW - Neural Networks KW - Low temperature KW - CLOUDSAT KW - Fish (cod family) KW - Cloud properties KW - MODIS (Moderate Resolution Imaging Spectrometer) KW - Ice clouds KW - Biological surveys KW - Mathematical models KW - Training KW - Neural networks KW - Estimating KW - Water content of clouds KW - Imaging techniques KW - Methodology KW - Channels KW - Clouds KW - Satellite data KW - Illumination KW - Precision KW - Cloud optical depth KW - Monitoring KW - Q2 09243:Structure, mechanics and thermodynamics KW - SW 7010:Education - extramural KW - M2 551.576:Clouds (551.576) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808716699?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=Estimating+nocturnal+opaque+ice+cloud+optical+depth+from+MODIS+multispectral+infrared+radiances+using+a+neural+network+method&rft.au=Minnis%2C+Patrick%3BHong%2C+Gang%3BSun-Mack%2C+Szedung%3BSmith%2C+William+L%3BChen%2C+Yan%3BMiller%2C+Steven+D&rft.aulast=Minnis&rft.aufirst=Patrick&rft.date=2016-05-01&rft.volume=121&rft.issue=9&rft.spage=4907&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2015JD024456 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-07-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Biological surveys; Low temperature; Mathematical models; Imaging techniques; Methodology; Neural networks; Water content of clouds; Algorithms; Correlations; Clouds; Low temperatures; Satellite data; Illumination; CLOUDSAT; Cloud optical depth; Ice clouds; MODIS (Moderate Resolution Imaging Spectrometer); Cloud properties; Channels; Neural Networks; Training; Estimating; Precision; Fish (cod family); Monitoring DO - http://dx.doi.org/10.1002/2015JD024456 ER - TY - JOUR T1 - The spectroscopic foundation of radiative forcing of climate by carbon dioxide AN - 1808704849; PQ0003308439 AB - The radiative forcing (RF) of carbon dioxide (CO sub(2)) is the leading contribution to climate change from anthropogenic activities. Calculating CO sub(2) RF requires detailed knowledge of spectral line parameters for thousands of infrared absorption lines. A reliable spectroscopic characterization of CO sub(2) forcing is critical to scientific and policy assessments of present climate and climate change. Our results show that CO sub(2) RF in a variety of atmospheres is remarkably insensitive to known uncertainties in the three main CO sub(2) spectroscopic parameters: the line shapes, line strengths, and half widths. We specifically examine uncertainty in RF due to line mixing as this process is critical in determining line shapes in the far wings of CO sub(2) absorption lines. RF computed with a Voigt line shape is also examined. Overall, the spectroscopic uncertainty in present-day CO sub(2) RF is less than 1%, indicating a robust foundation in our understanding of how rising CO sub(2) warms the climate system. Key Points * Line mixing and line shape uncertainties contribute<0.7% error to CO sub(2) radiative forcing * Line strength and half-width uncertainties contribute<0.3% error to CO sub(2) radiative forcing * Overall spectroscopic uncertainty in CO sub(2) radiative forcing is<1% JF - Geophysical Research Letters AU - Mlynczak, Martin G AU - Daniels, Taumi S AU - Kratz, David P AU - Feldman, Daniel R AU - Collins, William D AU - Mlawer, Eli J AU - Alvarado, Matthew J AU - Lawler, James E AU - Anderson, L W AU - Fahey, David W AU - Hunt, Linda A AU - Mast, Jeffrey C AD - NASA Langley Research Center, Hampton, Virginia, USA. Y1 - 2016/05// PY - 2016 DA - May 2016 SP - 5318 EP - 5325 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 43 IS - 10 SN - 0094-8276, 0094-8276 KW - Sustainability Science Abstracts; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Policies KW - Public policy and climate KW - Climate change KW - Wings KW - Anthropogenic factors KW - Radiative forcing KW - Infrared absorption KW - Absorption KW - Carbon dioxide KW - M2 551.583:Variations (551.583) KW - M3 1010:Issues in Sustainable Development KW - O 4080:Pollution - Control and Prevention KW - Q2 09182:Methods and instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808704849?accountid=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=Geophysical+Research+Letters&rft.atitle=The+spectroscopic+foundation+of+radiative+forcing+of+climate+by+carbon+dioxide&rft.au=Mlynczak%2C+Martin+G%3BDaniels%2C+Taumi+S%3BKratz%2C+David+P%3BFeldman%2C+Daniel+R%3BCollins%2C+William+D%3BMlawer%2C+Eli+J%3BAlvarado%2C+Matthew+J%3BLawler%2C+James+E%3BAnderson%2C+L+W%3BFahey%2C+David+W%3BHunt%2C+Linda+A%3BMast%2C+Jeffrey+C&rft.aulast=Mlynczak&rft.aufirst=Martin&rft.date=2016-05-01&rft.volume=43&rft.issue=10&rft.spage=5318&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2016GL068837 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-07-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Policies; Climate change; Anthropogenic factors; Wings; Carbon dioxide; Infrared absorption; Radiative forcing; Public policy and climate; Absorption DO - http://dx.doi.org/10.1002/2016GL068837 ER - TY - JOUR T1 - The Veritas and Themis asteroid families; 5-14 mu m spectra with the Spitzer Space Telescope AN - 1789753737; 2016-040210 JF - Icarus AU - Landsman, Zoe A AU - Licandro, Javier AU - Campins, Humberto AU - Ziffer, Julie AU - de Pra, Mario AU - Cruikshank, Dale P Y1 - 2016/05/01/ PY - 2016 DA - 2016 May 01 SP - 62 EP - 74 PB - Elsevier, New York, NY VL - 269 SN - 0019-1035, 0019-1035 KW - silicates KW - albedo KW - surface properties KW - near-infrared spectra KW - density KW - Themis asteroid family KW - Spitzer Space Telescope KW - Veritas asteroid family KW - thermal properties KW - emissivity KW - temperature KW - infrared spectra KW - eccentricity KW - aqueous alteration KW - physical properties KW - detection KW - rotation KW - orbital inclination KW - composition KW - thermomechanical properties KW - sheet silicates KW - spectra KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789753737?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+Veritas+and+Themis+asteroid+families%3B+5-14+mu+m+spectra+with+the+Spitzer+Space+Telescope&rft.au=Landsman%2C+Zoe+A%3BLicandro%2C+Javier%3BCampins%2C+Humberto%3BZiffer%2C+Julie%3Bde+Pra%2C+Mario%3BCruikshank%2C+Dale+P&rft.aulast=Landsman&rft.aufirst=Zoe&rft.date=2016-05-01&rft.volume=269&rft.issue=&rft.spage=62&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2016.01.008 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 46 N1 - PubXState - NY N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2016-05-19 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - albedo; aqueous alteration; composition; density; detection; eccentricity; emissivity; infrared spectra; near-infrared spectra; orbital inclination; physical properties; regolith; rotation; sheet silicates; silicates; spectra; Spitzer Space Telescope; surface properties; temperature; Themis asteroid family; thermal properties; thermomechanical properties; Veritas asteroid family DO - http://dx.doi.org/10.1016/j.icarus.2016.01.008 ER - TY - JOUR T1 - Characterization of artifacts introduced by the empirical volcano-scan atmospheric correction commonly applied to CRISM and OMEGA near-infrared spectra AN - 1789753452; 2016-040214 JF - Icarus AU - Wiseman, Sandra M AU - Arvidson, R E AU - Wolff, M J AU - Smith, M D AU - Seelos, F P AU - Morgan, F AU - Murchie, S L AU - Mustard, J F AU - Morris, R V AU - Humm, D AU - McGuire, P C Y1 - 2016/05/01/ PY - 2016 DA - 2016 May 01 SP - 111 EP - 121 PB - Elsevier, New York, NY VL - 269 SN - 0019-1035, 0019-1035 KW - albedo KW - near-infrared spectra KW - CRISM KW - atmosphere KW - water vapor KW - OMEGA KW - Mars KW - simulation KW - carbon dioxide KW - terrestrial planets KW - models KW - planets KW - absorption KW - ice KW - aerosols KW - spectra KW - corrections KW - Olympus Mons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789753452?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+artifacts+introduced+by+the+empirical+volcano-scan+atmospheric+correction+commonly+applied+to+CRISM+and+OMEGA+near-infrared+spectra&rft.au=Wiseman%2C+Sandra+M%3BArvidson%2C+R+E%3BWolff%2C+M+J%3BSmith%2C+M+D%3BSeelos%2C+F+P%3BMorgan%2C+F%3BMurchie%2C+S+L%3BMustard%2C+J+F%3BMorris%2C+R+V%3BHumm%2C+D%3BMcGuire%2C+P+C&rft.aulast=Wiseman&rft.aufirst=Sandra&rft.date=2016-05-01&rft.volume=269&rft.issue=&rft.spage=111&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2014.10.012 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 23 N1 - PubXState - NY N1 - Document feature - illus. N1 - Last updated - 2016-05-19 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - absorption; aerosols; albedo; atmosphere; carbon dioxide; corrections; CRISM; ice; Mars; models; near-infrared spectra; Olympus Mons; OMEGA; planets; simulation; spectra; terrestrial planets; water vapor DO - http://dx.doi.org/10.1016/j.icarus.2014.10.012 ER - TY - JOUR T1 - North American megadroughts in the Common Era: reconstructions and simulations AN - 1787977860; PQ0002966908 AB - During the Medieval Climate Anomaly (MCA), Western North America experienced episodes of intense aridity that persisted for multiple decades or longer. These megadroughts are well documented in many proxy records, but the causal mechanisms are poorly understood. General circulation models (GCMs) simulate megadroughts, but do not reproduce the temporal clustering of events during the MCA, suggesting they are not caused by the time history of volcanic or solar forcing. Instead, GCMs generate megadroughts through (1) internal atmospheric variability, (2) sea-surface temperatures, and (3) land surface and dust aerosol feedbacks. While no hypothesis has been definitively rejected, and no GCM has accurately reproduced all features (e.g., timing, duration, and extent) of any specific megadrought, their persistence suggests a role for processes that impart memory to the climate system (land surface and ocean dynamics). Over the 21st century, GCMs project an increase in the risk of megadrought occurrence through greenhouse gas forced reductions in precipitation and increases in evaporative demand. This drying is robust across models and multiple drought indicators, but major uncertainties still need to be resolved. These include the potential moderation of vegetation evaporative losses at higher atmospheric [CO sub(2)], variations in land surface model complexity, and decadal to multidecadal modes of natural climate variability that could delay or advance onset of aridification over the the next several decades. Because future droughts will arise from both natural variability and greenhouse gas forced trends in hydroclimate, improving our understanding of the natural drivers of persistent multidecadal megadroughts should be a major research priority. WIREs Clim Change 2016, 7:411-432. doi: 10.1002/wcc.394 For further resources related to this article, please visit the WIREs website . JF - Wiley Interdisciplinary Reviews: Climate Change AU - Cook, Benjamin I AU - Cook, Edward R AU - Smerdon, Jason E AU - Seager, Richard AU - Williams, APark AU - Coats, Sloan AU - Stahle, David W AU - Diaz, Jose Villanueva AD - NASA Goddard Institute for Space Studies, New York, NY, USA. Y1 - 2016/05// PY - 2016 DA - May 2016 SP - 411 EP - 432 PB - Wiley-Blackwell, Baffins Lane Chichester W. Sussex PO19 1UD United Kingdom VL - 7 IS - 3 SN - 1757-7780, 1757-7780 KW - Meteorological & Geoastrophysical Abstracts; Sustainability Science Abstracts KW - Rainfall KW - Climate change KW - Drought KW - Dust KW - Climate and vegetation KW - Climatic variability KW - Volcanic activity KW - Hydroclimate KW - Paleoceanography KW - Aridity KW - Droughts KW - North America KW - Aerosols KW - Climate models KW - Atmospheric variability KW - Climate KW - Volcanoes KW - Natural variability KW - Vegetation KW - Simulation KW - Precipitation KW - Numerical simulations KW - Reviews KW - Oceans KW - General circulation models KW - Carbon dioxide KW - Greenhouse gases 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/1787977860?accountid=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=North+American+megadroughts+in+the+Common+Era%3A+reconstructions+and+simulations&rft.au=Cook%2C+Benjamin+I%3BCook%2C+Edward+R%3BSmerdon%2C+Jason+E%3BSeager%2C+Richard%3BWilliams%2C+APark%3BCoats%2C+Sloan%3BStahle%2C+David+W%3BDiaz%2C+Jose+Villanueva&rft.aulast=Cook&rft.aufirst=Benjamin&rft.date=2016-05-01&rft.volume=7&rft.issue=3&rft.spage=411&rft.isbn=&rft.btitle=&rft.title=Wiley+Interdisciplinary+Reviews%3A+Climate+Change&rft.issn=17577780&rft_id=info:doi/10.1002%2Fwcc.394 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Climate models; Atmospheric variability; Climate change; Natural variability; Drought; Precipitation; Climate and vegetation; Climatic variability; Numerical simulations; Volcanic activity; General circulation models; Paleoceanography; Greenhouse gases; Aridity; Aerosols; Rainfall; Climate; Volcanoes; Simulation; Vegetation; Dust; Oceans; Reviews; Hydroclimate; Carbon dioxide; Droughts; North America DO - http://dx.doi.org/10.1002/wcc.394 ER - TY - JOUR T1 - Error analysis of upper tropospheric water vapor in CMIP5 models using "A-Train" satellite observations and reanalysis data AN - 1787975752; PQ0002993512 AB - Upper tropospheric water vapor (UTWV) plays a critical role in amplifying global warming caused by increasing greenhouse gases, yet it is one of the most poorly simulated quantities in climate models. It is not clear what physical processes play a central role in controlling the model errors in UTWV. We diagnose the UTWV simulation errors from AMIP models submitted to the CMIP5 project by using "A-Train" satellite observation and reanalysis data. We identify the relative contributions of errors in relative humidity (RH), temperature, and large-scale circulation (represented by vertical pressure velocity at 500 hPa, omega sub(500)) to the modeled UTWV errors over the tropics (30 degree N-30 degree S). It is found that models generally have positive biases in UTWV, except over the continental convective regions where negative biases predominate. The errors in the patterns and amplitudes of climatological UTWV are highly correlated with those in RH and omega sub(500). The fractional UTWV errors show large positive errors over the large-scale descending regimes (0 300 K or omega sub(500) < -3 0 hPa/day) and these errors are positive (negative) where anomalous descent (ascent) occurs during El Nino. We find that the water vapor errors are dominated by the errors in RH rather than in temperature throughout the troposphere, while temperature errors play an important role for water vapor errors near the tropopause. JF - Climate Dynamics AU - Takahashi, Hanii AU - Su, Hui AU - Jiang, Jonathan H AD - Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA, Hanii.Takahashi@jpl.nasa.gov Y1 - 2016/05// PY - 2016 DA - May 2016 SP - 2787 EP - 2803 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 46 IS - 9-10 SN - 0930-7575, 0930-7575 KW - Oceanic Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Remote Sensing KW - Relative humidity KW - Water Vapor KW - Tropopause KW - Climate change KW - Remote sensing KW - Data reanalysis KW - Relative Humidity KW - Upper tropospheric water vapor KW - Sea surface temperature anomalies KW - El Nino KW - Sea surface temperatures KW - Seasonal variations KW - Modelling KW - Satellite Technology KW - Climate models KW - Climates KW - Temperature KW - Troposphere KW - Atmospheric circulation KW - Greenhouse effect KW - Errors KW - Model Studies KW - Satellite sensing KW - Satellite data KW - Numerical simulations KW - Convective activity KW - Global warming KW - Greenhouse gases KW - Q2 09243:Structure, mechanics and thermodynamics KW - SW 0810:General KW - O 4080:Pollution - Control and Prevention KW - M2 551.588:Environmental Influences (551.588) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1787975752?accountid=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=Climate+Dynamics&rft.atitle=Error+analysis+of+upper+tropospheric+water+vapor+in+CMIP5+models+using+%22A-Train%22+satellite+observations+and+reanalysis+data&rft.au=Takahashi%2C+Hanii%3BSu%2C+Hui%3BJiang%2C+Jonathan+H&rft.aulast=Takahashi&rft.aufirst=Hanii&rft.date=2016-05-01&rft.volume=46&rft.issue=9-10&rft.spage=2787&rft.isbn=&rft.btitle=&rft.title=Climate+Dynamics&rft.issn=09307575&rft_id=info:doi/10.1007%2Fs00382-015-2732-9 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Number of references - 41 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Relative humidity; Satellite sensing; El Nino; Climate change; Remote sensing; Troposphere; Greenhouse effect; Seasonal variations; Modelling; Climate models; Tropopause; Atmospheric circulation; Data reanalysis; Upper tropospheric water vapor; Sea surface temperature anomalies; Satellite data; Numerical simulations; Convective activity; Global warming; Greenhouse gases; Sea surface temperatures; Remote Sensing; Satellite Technology; Water Vapor; Climates; Temperature; Errors; Relative Humidity; Model Studies DO - http://dx.doi.org/10.1007/s00382-015-2732-9 ER - TY - JOUR T1 - Observational constraints on atmospheric and oceanic cross-equatorial heat transports: revisiting the precipitation asymmetry problem in climate models AN - 1787974499; PQ0002993540 AB - Satellite based top-of-atmosphere (TOA) and surface radiation budget observations are combined with mass corrected vertically integrated atmospheric energy divergence and tendency from reanalysis to infer the regional distribution of the TOA, atmospheric and surface energy budget terms over the globe. Hemispheric contrasts in the energy budget terms are used to determine the radiative and combined sensible and latent heat contributions to the cross-equatorial heat transports in the atmosphere (AHT sub(EQ)) and ocean (OHT sub(EQ)). The contrast in net atmospheric radiation implies an AHT sub(EQ) from the northern hemisphere (NH) to the southern hemisphere (SH) (0.75 PW), while the hemispheric difference in sensible and latent heat implies an AHT sub(EQ) in the opposite direction (0.51 PW), resulting in a net NH to SH AHT sub(EQ) (0.24 PW). At the surface, the hemispheric contrast in the radiative component (0.95 PW) dominates, implying a 0.44 PW SH to NH OHT sub(EQ). Coupled model intercomparison project phase 5 (CMIP5) models with excessive net downward surface radiation and surface-to-atmosphere sensible and latent heat transport in the SH relative to the NH exhibit anomalous northward AHT sub(EQ) and overestimate SH tropical precipitation. The hemispheric bias in net surface radiative flux is due to too much longwave surface radiative cooling in the NH tropics in both clear and all-sky conditions and excessive shortwave surface radiation in the SH subtropics and extratropics due to an underestimation in reflection by clouds. JF - Climate Dynamics AU - Loeb, Norman G AU - Wang, Hailan AU - Cheng, Anning AU - Kato, Seiji AU - Fasullo, John T AU - Xu, Kuan-Man AU - Allan, Richard P AD - NASA Langley Research Center, Hampton, VA, USA, norman.g.loeb@nasa.gov Y1 - 2016/05// PY - 2016 DA - May 2016 SP - 3239 EP - 3257 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 46 IS - 9-10 SN - 0930-7575, 0930-7575 KW - Oceanic Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Divergence KW - Data reanalysis KW - Latent Heat KW - Radiation budget KW - Radiation KW - Ocean-atmosphere system KW - Atmospheric radiation KW - Heat transport KW - Modelling KW - Atmospheric precipitations KW - Marine KW - Heat flux KW - Climate models KW - Climates KW - Precipitation KW - Energy budget KW - Model Studies KW - Clouds KW - Heat KW - Oceans KW - Sensible and latent heat KW - Downward long wave radiation KW - Fluctuations KW - Q2 09243:Structure, mechanics and thermodynamics KW - SW 0810:General KW - M2 551.581:Latitudinal Influences (551.581) KW - O 7060:Navigation and Communications UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1787974499?accountid=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=Climate+Dynamics&rft.atitle=Observational+constraints+on+atmospheric+and+oceanic+cross-equatorial+heat+transports%3A+revisiting+the+precipitation+asymmetry+problem+in+climate+models&rft.au=Loeb%2C+Norman+G%3BWang%2C+Hailan%3BCheng%2C+Anning%3BKato%2C+Seiji%3BFasullo%2C+John+T%3BXu%2C+Kuan-Man%3BAllan%2C+Richard+P&rft.aulast=Loeb&rft.aufirst=Norman&rft.date=2016-05-01&rft.volume=46&rft.issue=9-10&rft.spage=3239&rft.isbn=&rft.btitle=&rft.title=Climate+Dynamics&rft.issn=09307575&rft_id=info:doi/10.1007%2Fs00382-015-2766-z LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Number of references - 54 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Atmospheric precipitations; Radiation; Ocean-atmosphere system; Downward long wave radiation; Energy budget; Modelling; Heat transport; Clouds; Radiation budget; Heat flux; Climate models; Sensible and latent heat; Divergence; Precipitation; Data reanalysis; Atmospheric radiation; Heat; Oceans; Climates; Fluctuations; Latent Heat; Model Studies; Marine DO - http://dx.doi.org/10.1007/s00382-015-2766-z ER - TY - JOUR T1 - Metagenomic Analyses of the Autotrophic Fe(II)-Oxidizing, Nitrate-Reducing Enrichment Culture KS. AN - 1782834059; 26896135 AB - Nitrate-dependent ferrous iron [Fe(II)] oxidation (NDFO) is a well-recognized chemolithotrophic pathway in anoxic sediments. The neutrophilic chemolithoautotrophic enrichment culture KS originally obtained from a freshwater sediment (K. L. Straub, M. Benz, B. Schink, and F. Widdel, Appl Environ Microbiol 62:1458-1460, 1996) has been used as a model system to study NDFO. However, the primary Fe(II) oxidizer in this culture has not been isolated, despite extensive efforts to do so. Here, we present a metagenomic analysis of this enrichment culture in order to gain insight into electron transfer pathways and the roles of different bacteria in the culture. We obtained a near-complete genome of the primary Fe(II) oxidizer, a species in the family Gallionellaceae, and draft genomes from its flanking community members. A search of the putative extracellular electron transfer pathways in these genomes led to the identification of a homolog of the MtoAB complex [a porin-multiheme cytochromec system identified in neutrophilic microaerobic Fe(II)-oxidizing Sideroxydans lithotrophicus ES-1] in a Gallionellaceae sp., and findings of other putative genes involving cytochromecand multicopper oxidases, such as Cyc2 and OmpB. Genome-enabled metabolic reconstruction revealed that this Gallionellaceae sp. lacks nitric oxide and nitrous oxide reductase genes and may partner with flanking populations capable of complete denitrification to avoid toxic metabolite accumulation, which may explain its resistance to growth in pure culture. This and other revealed interspecies interactions and metabolic interdependencies in nitrogen and carbon metabolisms may allow these organisms to cooperate effectively to achieve robust chemolithoautotrophic NDFO. Overall, the results significantly expand our knowledge of NDFO and suggest a range of genetic targets for further exploration. Copyright © 2016, American Society for Microbiology. All Rights Reserved. JF - Applied and environmental microbiology AU - He, Shaomei AU - Tominski, Claudia AU - Kappler, Andreas AU - Behrens, Sebastian AU - Roden, Eric E AD - Department of Geoscience, University of Wisconsin-Madison, Madison, Wisconsin, USA Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin, USA NASA Astrobiology Institute, University of Wisconsin-Madison, Madison, Wisconsin, USA she@wisc.edu eroden@geology.wisc.edu. ; Geomicrobiology, Center for Applied Geosciences (ZAG), Eberhard Karls University Tuebingen, Tuebingen, Germany. ; Department of Civil, Environmental, and Geo-Engineering, University of Minnesota, Minneapolis, Minnesota, USA BioTechnology Institute, University of Minnesota, St. Paul, Minnesota, USA. ; Department of Geoscience, University of Wisconsin-Madison, Madison, Wisconsin, USA NASA Astrobiology Institute, University of Wisconsin-Madison, Madison, Wisconsin, USA she@wisc.edu eroden@geology.wisc.edu. Y1 - 2016/05// PY - 2016 DA - May 2016 SP - 2656 EP - 2668 VL - 82 IS - 9 KW - Culture Media KW - 0 KW - DNA, Bacterial KW - Ferrous Compounds KW - Nitrates KW - RNA, Ribosomal, 16S KW - Hydrogen KW - 7YNJ3PO35Z KW - Oxidoreductases KW - EC 1.- KW - nitrous oxide reductase KW - EC 1.7.2.4 KW - Index Medicus KW - Phylogeny KW - Geologic Sediments -- chemistry KW - RNA, Ribosomal, 16S -- genetics KW - Computer Simulation KW - Electron Transport KW - Metabolic Networks and Pathways KW - Sequence Analysis, DNA KW - Oxidation-Reduction KW - Metagenomics -- methods KW - Oxidoreductases -- genetics KW - Oxidoreductases -- metabolism KW - Autotrophic Processes KW - Fresh Water KW - Sequence Analysis KW - DNA, Bacterial -- genetics KW - Hydrogen -- metabolism KW - Gallionellaceae -- genetics KW - Ferrous Compounds -- metabolism KW - Nitrates -- metabolism KW - Gallionellaceae -- enzymology KW - Gallionellaceae -- metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1782834059?accountid=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=Applied+and+environmental+microbiology&rft.atitle=Metagenomic+Analyses+of+the+Autotrophic+Fe%28II%29-Oxidizing%2C+Nitrate-Reducing+Enrichment+Culture+KS.&rft.au=He%2C+Shaomei%3BTominski%2C+Claudia%3BKappler%2C+Andreas%3BBehrens%2C+Sebastian%3BRoden%2C+Eric+E&rft.aulast=He&rft.aufirst=Shaomei&rft.date=2016-05-01&rft.volume=82&rft.issue=9&rft.spage=2656&rft.isbn=&rft.btitle=&rft.title=Applied+and+environmental+microbiology&rft.issn=1098-5336&rft_id=info:doi/10.1128%2FAEM.03493-15 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2017-01-31 N1 - Date created - 2016-04-19 N1 - Date revised - 2017-02-02 N1 - SuppNotes - Cited By: FEMS Microbiol Rev. 2001 Aug;25(4):455-501 [11524134] ISME J. 2014 Jul;8(7):1452-63 [24621521] J Bacteriol. 2003 Apr;185(7):2096-103 [12644478] Nucleic Acids Res. 2004 Jul 1;32(Web Server issue):W400-4 [15215419] BMC Bioinformatics. 2004 Aug 19;5:113 [15318951] J Bacteriol. 1990 Apr;172(4):1969-77 [2180913] J Bacteriol. 1990 Jun;172(6):2920-9 [2188945] Mol Microbiol. 1992 Jun;6(11):1523-32 [1625581] J Bacteriol. 1993 Jan;175(1):128-32 [8380149] J Bacteriol. 1996 Mar;178(6):1532-8 [8626278] Appl Environ Microbiol. 1997 Dec;63(12):4784-92 [9406396] J Bacteriol. 1998 Dec;180(23):6292-7 [9829939] Appl Environ Microbiol. 2005 Dec;71(12):8634-41 [16332857] Environ Microbiol. 2006 Jan;8(1):100-13 [16343326] Microbiology. 2006 Aug;152(Pt 8):2257-64 [16849792] Mol Microbiol. 2006 Jul;61(2):297-309 [16856937] Proteins. 2006 Aug 15;64(3):643-51 [16752418] Microbiology. 2007 Jan;153(Pt 1):102-10 [17185539] J Bacteriol. 2007 Mar;189(5):1765-73 [17189359] J Bacteriol. 2007 Mar;189(5):1774-82 [17189371] J Bacteriol. 2000 Jun;182(12):3602-6 [10852897] Appl Environ Microbiol. 2001 Mar;67(3):1328-34 [11229928] Environ Sci Technol. 2001 Apr 15;35(8):1644-50 [11329715] Appl Microbiol Biotechnol. 2007 Oct;76(5):1035-42 [17668201] FEMS Microbiol Lett. 2007 Dec;277(1):21-7 [17986080] Microbiology. 2008 May;154(Pt 5):1422-35 [18451051] J Exp Bot. 2008;59(7):1525-41 [18245799] Mol Biol Evol. 2008 Jul;25(7):1307-20 [18367465] J Biol Chem. 2008 Sep 19;283(38):25803-11 [18632666] Water Res. 2009 Feb;43(2):546-52 [19081595] Genome Biol. 2009;10(8):R85 [19698104] J Bacteriol. 2010 Mar;192(5):1475-6 [20023012] Syst Biol. 2010 May;59(3):307-21 [20525638] Bioinformatics. 2010 Jul 1;26(13):1608-15 [20472543] Microbiology. 2011 Jun;157(Pt 6):1551-64 [21511765] Genome Res. 2011 Sep;21(9):1552-60 [21690186] Water Res. 2011 Nov 15;45(18):5945-52 [21940030] J Biol Chem. 2012 Jan 2;287(1):757-66 [22105076] Appl Environ Microbiol. 2012 Feb;78(4):913-21 [22179232] ISME J. 2012 Jun;6(6):1186-99 [22170421] Mol Microbiol. 2012 Jul;85(2):201-12 [22646977] Appl Environ Microbiol. 2012 Aug;78(16):5746-52 [22685132] Biochem Soc Trans. 2012 Dec 1;40(6):1249-56 [23176463] Biochem Soc Trans. 2012 Dec 1;40(6):1261-7 [23176465] Biochim Biophys Acta. 2013 Feb;1827(2):161-75 [23044392] Nat Biotechnol. 2013 Jun;31(6):533-8 [23707974] Nat Commun. 2013;4:2304 [23942190] J Bacteriol. 2014 Dec;196(24):4206-15 [25182500] Environ Microbiol Rep. 2014 Dec;6(6):776-85 [25139405] Appl Environ Microbiol. 2015 Sep 1;81(17):5927-37 [26092463] Appl Environ Microbiol. 2009 Nov;75(21):6937-40 [19749073] Nucleic Acids Res. 2014 Jan;42(Database issue):D568-73 [24136997] Nucleic Acids Res. 2014 Jan;42(Database issue):D560-7 [24165883] Appl Environ Microbiol. 2014 Feb;80(3):1051-61 [24271182] J Bacteriol. 2002 Mar;184(6):1750-8 [11872727] N1 - Last updated - 2017-02-02 DO - http://dx.doi.org/10.1128/AEM.03493-15 ER - TY - NEWS T1 - NASA helps mmonitor LA coastline AN - 1785165746 JF - UPI Space Daily AU - Carol Rasmussen for NASA Earth Science News Y1 - 2016/04/29/ PY - 2016 DA - 2016 Apr 29 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1785165746?accountid=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+helps+mmonitor+LA+coastline&rft.au=Carol+Rasmussen+for+NASA+Earth+Science+News&rft.aulast=Carol+Rasmussen+for+NASA+Earth+Science+News&rft.aufirst=&rft.date=2016-04-29&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 - 2016-04-29 ER - TY - NEWS T1 - On the trail of a hazy global killer AN - 1785165561 JF - UPI Space Daily AU - Steve Cole NASA Earth Science News Y1 - 2016/04/29/ PY - 2016 DA - 2016 Apr 29 CY - Washington KW - Aeronautics And Space Flight UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1785165561?accountid=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=On+the+trail+of+a+hazy+global+killer&rft.au=Steve+Cole+NASA+Earth+Science+News&rft.aulast=Steve+Cole+NASA+Earth+Science+News&rft.aufirst=&rft.date=2016-04-29&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 - 2016-04-29 ER - TY - JOUR T1 - LADEE/LDEX observations of lunar pickup ion distribution and variability AN - 1819895540; 2016-080683 AB - We report fortuitous observations of low-energy lunar pickup ion fluxes near the Moon while in the solar wind by the Lunar Dust Experiment (LDEX) on board the Lunar Atmosphere and Dust Environment Explorer (LADEE). We describe the method of observation and the empirical calibration of the instrument for ion observations. LDEX observes several trends in the exospheric ion production rate, including a scale height of approximately 100 km, a positive, linear correlation with solar wind flux, and evidence of a slight enhancement near 7-8 h local time. We compare the LDEX observations to both LADEE Neutral Mass Spectrometer ion mode observations and theoretical models. The LDEX data are best fit by total exospheric ion production rates of nearly equal 6 X 10 (super 3) m (super -3) s (super -1) with dominant contributions from Al (super +) , CO (super +) , and Ar (super +) , although the LDEX data suggest that the aluminum neutral density and corresponding ion production rate are lower than predicted by recent models. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Poppe, A R AU - Halekas, J S AU - Szalay, J R AU - Horanyi, M AU - Levin, Z AU - Kempf, S Y1 - 2016/04/16/ PY - 2016 DA - 2016 Apr 16 SP - 3069 EP - 3077 PB - American Geophysical Union, Washington, DC VL - 43 IS - 7 SN - 0094-8276, 0094-8276 KW - oxygen KW - Moon KW - solar wind KW - alkali metals KW - calibration KW - sodium KW - silicon KW - ions KW - Lunar Dust Experiment KW - iron KW - observations KW - exosphere KW - argon KW - models KW - Lunar Atmosphere and Dust Environment Explorer KW - noble gases KW - metals KW - carbon KW - aluminum KW - potassium KW - helium KW - particles KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819895540?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=LADEE%2FLDEX+observations+of+lunar+pickup+ion+distribution+and+variability&rft.au=Poppe%2C+A+R%3BHalekas%2C+J+S%3BSzalay%2C+J+R%3BHoranyi%2C+M%3BLevin%2C+Z%3BKempf%2C+S&rft.aulast=Poppe&rft.aufirst=A&rft.date=2016-04-16&rft.volume=43&rft.issue=7&rft.spage=3069&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2016GL068393 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 45 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2016-09-16 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - alkali metals; aluminum; argon; calibration; carbon; exosphere; helium; ions; iron; Lunar Atmosphere and Dust Environment Explorer; Lunar Dust Experiment; metals; models; Moon; noble gases; observations; oxygen; particles; potassium; silicon; sodium; solar wind DO - http://dx.doi.org/10.1002/2016GL068393 ER - TY - JOUR T1 - Extracting ocean-generated tidal magnetic signals from Swarm data through satellite gradiometry AN - 1819895484; 2016-080703 AB - Ocean-generated magnetic field models of the Principal Lunar, M (sub 2) , and the Larger Lunar elliptic, N (sub 2) , semidiurnal tidal constituents were estimated through a "Comprehensive Inversion" of the first 20.5 months of magnetic measurements from European Space Agency's (ESA) Swarm satellite constellation mission. While the constellation provides important north-south along-track gradiometry information, it is the unique low-spacecraft pair that allows for east-west cross-track gradiometry. This latter type is crucial in delivering an M (sub 2) estimate of similar quality with that derived from over 10 years of CHAMP satellite data but over a shorter interval, at higher altitude, and during more magnetically disturbed conditions. Recovered N (sub 2) contains nonoceanic signal but is highly correlated with theoretical models in regions of maximum oceanic amplitude. Thus, satellite magnetic gradiometry may eventually enable the monitoring of ocean electrodynamic properties at temporal resolutions of 1 to 2 years, which may have important implications for the inference of ocean temperature and salinity. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Sabaka, Terence J AU - Tyler, Robert H AU - Olsen, Nils Y1 - 2016/04/16/ PY - 2016 DA - 2016 Apr 16 SP - 3237 EP - 3245 PB - American Geophysical Union, Washington, DC VL - 43 IS - 7 SN - 0094-8276, 0094-8276 KW - ocean circulation KW - sea water KW - monitoring KW - Swarm Mission KW - global KW - geophysical methods KW - magnetic methods KW - properties KW - equations KW - salinity KW - satellite methods KW - temperature KW - measurement KW - tides KW - models KW - gradiometry KW - remote sensing KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819895484?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Extracting+ocean-generated+tidal+magnetic+signals+from+Swarm+data+through+satellite+gradiometry&rft.au=Sabaka%2C+Terence+J%3BTyler%2C+Robert+H%3BOlsen%2C+Nils&rft.aulast=Sabaka&rft.aufirst=Terence&rft.date=2016-04-16&rft.volume=43&rft.issue=7&rft.spage=3237&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2016GL068180 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 30 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table, sketch maps N1 - Last updated - 2016-09-16 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - equations; geophysical methods; global; gradiometry; magnetic methods; measurement; models; monitoring; ocean circulation; properties; remote sensing; salinity; satellite methods; sea water; Swarm Mission; temperature; tides DO - http://dx.doi.org/10.1002/2016GL068180 ER - TY - JOUR T1 - Postseismic gravity change after the 2006-2007 great earthquake doublet and constraints on the asthenosphere structure in the central Kuril Islands AN - 1819894706; 2016-080695 AB - Large earthquakes often trigger viscoelastic adjustment for years to decades depending on the rheological properties and the nature and spatial extent of coseismic stress. The 2006 M (sub w) 8.3 thrust and 2007 M (sub w) 8.1 normal fault earthquakes of the central Kuril Islands resulted in significant postseismic gravity change in Gravity Recovery and Climate Experiment (GRACE) but without a discernible coseismic gravity change. The gravity increase of approximately 4 mu Gal, observed consistently from various GRACE solutions around the epicentral area during 2007-2015, is interpreted as resulting from gradual seafloor uplift by approximately 6 cm produced by postseismic relaxation. The GRACE data are best fit with a model of 25-35 km for the elastic thickness and approximately 10 (super 18) Pa s for the Maxwell viscosity of the asthenosphere. The large measurable postseismic gravity change (greater than coseismic change) emphasizes the importance of viscoelastic relaxation in understanding tectonic deformation and fault-locking scenarios in the Kuril subduction zone. Abstract Copyright (2016), . The Authors. JF - Geophysical Research Letters AU - Han, Shin-Chan AU - Sauber, Jeanne AU - Pollitz, Fred Y1 - 2016/04/16/ PY - 2016 DA - 2016 Apr 16 SP - 3169 EP - 3177 PB - American Geophysical Union, Washington, DC VL - 43 IS - 7 SN - 0094-8276, 0094-8276 KW - Russian Pacific region KW - Sakhalin Russian Federation KW - Tohoku-Oki earthquake 2011 KW - geophysical surveys KW - GRACE KW - Russian Federation KW - Kuril Islands earthquakes 2006-2007 KW - spatial distribution KW - gravity methods KW - Kuril Islands KW - Commonwealth of Independent States KW - quantitative analysis KW - rheology KW - compression KW - Asia KW - faults KW - patterns KW - time series analysis KW - stress KW - statistical analysis KW - geophysical methods KW - Sumatra-Andaman Islands earthquake 2004 KW - relaxation KW - properties KW - equations KW - satellite methods KW - viscoelasticity KW - models KW - asthenosphere KW - rupture KW - viscosity KW - thrust faults KW - great earthquakes KW - surveys KW - epicenters KW - earthquakes KW - crust KW - 19:Seismology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819894706?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Postseismic+gravity+change+after+the+2006-2007+great+earthquake+doublet+and+constraints+on+the+asthenosphere+structure+in+the+central+Kuril+Islands&rft.au=Han%2C+Shin-Chan%3BSauber%2C+Jeanne%3BPollitz%2C+Fred&rft.aulast=Han&rft.aufirst=Shin-Chan&rft.date=2016-04-16&rft.volume=43&rft.issue=7&rft.spage=3169&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2016GL068167 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 32 N1 - PubXState - DC N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2016-09-16 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - Asia; asthenosphere; Commonwealth of Independent States; compression; crust; earthquakes; epicenters; equations; faults; geophysical methods; geophysical surveys; GRACE; gravity methods; great earthquakes; Kuril Islands; Kuril Islands earthquakes 2006-2007; models; patterns; properties; quantitative analysis; relaxation; rheology; rupture; Russian Federation; Russian Pacific region; Sakhalin Russian Federation; satellite methods; spatial distribution; statistical analysis; stress; Sumatra-Andaman Islands earthquake 2004; surveys; thrust faults; time series analysis; Tohoku-Oki earthquake 2011; viscoelasticity; viscosity DO - http://dx.doi.org/10.1002/2016GL068167 ER - TY - JOUR T1 - Solid-state photochemistry as a formation mechanism for Titan's stratospheric C (sub 4) N (sub 2) ice clouds AN - 1819894240; 2016-080685 AB - We propose that C (sub 4) N (sub 2) ice clouds observed in Titan's springtime polar stratosphere arise due to solid-state photochemistry occurring within extant ice cloud particles of HCN-HC (sub 3) N mixtures. This formation process resembles the halogen-induced ice particle surface chemistry that leads to condensed nitric acid trihydrate (NAT) particles and ozone depletion in Earth's polar stratosphere. As our analysis of the Cassini Composite Infrared Spectrometer 478 cm (super -1) ice emission feature demonstrates, this solid-state photochemistry mechanism eliminates the need for the relatively high C (sub 4) N (sub 2) saturation vapor pressures required (even though they are not observed) when the ice is produced through the usual procedure of direct condensation from the vapor. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Anderson, Carrie M AU - Samuelson, R E AU - Yung, Y L AU - McLain, J L Y1 - 2016/04/16/ PY - 2016 DA - 2016 Apr 16 SP - 3088 EP - 3094 PB - American Geophysical Union, Washington, DC VL - 43 IS - 7 SN - 0094-8276, 0094-8276 KW - icy satellites KW - nitric acid trihydrate KW - pressure KW - density KW - condensation KW - photochemistry KW - mechanism KW - ice clouds KW - equations KW - variations KW - observations KW - models KW - ozone KW - stratosphere KW - chemical reactions KW - saturation KW - Titan Satellite KW - thickness KW - aerosols KW - dicyanoacetylene KW - seasonal variations KW - satellites KW - particles KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819894240?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Solid-state+photochemistry+as+a+formation+mechanism+for+Titan%27s+stratospheric+C+%28sub+4%29+N+%28sub+2%29+ice+clouds&rft.au=Anderson%2C+Carrie+M%3BSamuelson%2C+R+E%3BYung%2C+Y+L%3BMcLain%2C+J+L&rft.aulast=Anderson&rft.aufirst=Carrie&rft.date=2016-04-16&rft.volume=43&rft.issue=7&rft.spage=3088&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2016GL067795 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 29 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2016-09-16 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - aerosols; chemical reactions; condensation; density; dicyanoacetylene; equations; ice clouds; icy satellites; mechanism; models; nitric acid trihydrate; observations; ozone; particles; photochemistry; pressure; satellites; saturation; seasonal variations; stratosphere; thickness; Titan Satellite; variations DO - http://dx.doi.org/10.1002/2016GL067795 ER - TY - JOUR T1 - Coupling between mineral reactions, chemical changes in groundwater, and earthquakes in Iceland AN - 1844925045; 2016-101433 AB - Chemical analysis of groundwater samples collected from a borehole at Hafralaekur, northern Iceland, from October 2008 to June 2015 revealed (1) a long-term decrease in concentration of Si and Na and (2) an abrupt increase in concentration of Na before each of two consecutive M > 5 earthquakes which occurred in 2012 and 2013, both 76 km from Hafralaekur. Based on a geochemical (major elements and stable isotopes), petrological, and mineralogical study of drill cuttings taken from an adjacent borehole, we are able to show that (1) the long-term decrease in concentration of Si and Na was caused by constant volume replacement of labradorite by analcime coupled with precipitation of zeolites in vesicles and along fractures and (2) the abrupt increase of Na concentration before the first earthquake records a switchover to nonstoichiometric dissolution of analcime with preferential release of Na into groundwater. We attribute decay of the Na peaks, which followed and coincided with each earthquake to uptake of Na along fractured or porous boundaries between labradorite and analcime crystals. Possible causes of these Na peaks are an increase of reactive surface area caused by fracturing or a shift from chemical equilibrium caused by mixing between groundwater components. Both could have been triggered by preseismic dilation, which was also inferred in a previous study by Skelton et al. (2014). The mechanism behind preseismic dilation so far from the focus of an earthquake remains unknown. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Solid Earth AU - Andren, Margareta AU - Stockmann, Gabrielle AU - Skelton, Alasdair AU - Sturkell, Erik AU - Morth, Carl-Magnus AU - Guethrunardottir, Helga Rakel AU - Keller, Nicole Simone AU - Odling, Nic AU - Dahren, Borje AU - Broman, Curt AU - Balic-Zunic, Tonci AU - Hjartarson, Hreinn AU - Siegmund, Heike AU - Freund, Friedemann AU - Kockum, Ingrid Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 2315 EP - 2337 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 121 IS - 4 SN - 2169-9313, 2169-9313 KW - silicates KW - Hafralaekur Island KW - Europe KW - labradorite KW - cuttings KW - mineral composition KW - mixing KW - zeolite group KW - framework silicates KW - northern Iceland KW - lower Pleistocene KW - plagioclase KW - Eurasian Plate KW - monitoring KW - Quaternary KW - time series analysis KW - pillow lava KW - Tertiary KW - plate tectonics KW - Pleistocene KW - Iceland KW - dilation KW - feldspar group KW - earthquakes KW - crust KW - precursors KW - isotope fractionation KW - volcanic rocks KW - oxygen KW - isotopes KW - igneous rocks KW - hyaloclastite KW - upper Pliocene KW - solution KW - silicon KW - Holocene KW - stable isotopes KW - ground water KW - emission spectra KW - Cenozoic KW - fractures KW - major elements KW - water-rock interaction KW - spectra KW - chemical composition KW - stoichiometry KW - geochemistry KW - Western Europe KW - isotope ratios KW - statistical analysis KW - magnitude KW - alkali metals KW - O-18/O-16 KW - sodium KW - North American Plate KW - hydrochemistry KW - pyroclastics KW - boreholes KW - lava KW - D/H KW - Neogene KW - metals KW - hydrogen KW - Pliocene KW - analcime KW - 19:Seismology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1844925045?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+Solid+Earth&rft.atitle=Coupling+between+mineral+reactions%2C+chemical+changes+in+groundwater%2C+and+earthquakes+in+Iceland&rft.au=Andren%2C+Margareta%3BStockmann%2C+Gabrielle%3BSkelton%2C+Alasdair%3BSturkell%2C+Erik%3BMorth%2C+Carl-Magnus%3BGuethrunardottir%2C+Helga+Rakel%3BKeller%2C+Nicole+Simone%3BOdling%2C+Nic%3BDahren%2C+Borje%3BBroman%2C+Curt%3BBalic-Zunic%2C+Tonci%3BHjartarson%2C+Hreinn%3BSiegmund%2C+Heike%3BFreund%2C+Friedemann%3BKockum%2C+Ingrid&rft.aulast=Andren&rft.aufirst=Margareta&rft.date=2016-04-01&rft.volume=121&rft.issue=4&rft.spage=2315&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Solid+Earth&rft.issn=21699313&rft_id=info:doi/10.1002%2F2015JB012614 L2 - http://agupubs.onlinelibrary.wiley.com/agu/jgr/journal/10.1002/(ISSN)2169-9356/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 49 N1 - PubXState - DC N1 - Document feature - illus. incl. sect., strat. cols., 3 tables, sketch maps N1 - Last updated - 2016-12-01 N1 - SubjectsTermNotLitGenreText - alkali metals; analcime; boreholes; Cenozoic; chemical composition; crust; cuttings; D/H; dilation; earthquakes; emission spectra; Eurasian Plate; Europe; feldspar group; fractures; framework silicates; geochemistry; ground water; Hafralaekur Island; Holocene; hyaloclastite; hydrochemistry; hydrogen; Iceland; igneous rocks; isotope fractionation; isotope ratios; isotopes; labradorite; lava; lower Pleistocene; magnitude; major elements; metals; mineral composition; mixing; monitoring; Neogene; North American Plate; northern Iceland; O-18/O-16; oxygen; pillow lava; plagioclase; plate tectonics; Pleistocene; Pliocene; precursors; pyroclastics; Quaternary; silicates; silicon; sodium; solution; spectra; stable isotopes; statistical analysis; stoichiometry; Tertiary; time series analysis; upper Pliocene; volcanic rocks; water-rock interaction; Western Europe; zeolite group DO - http://dx.doi.org/10.1002/2015JB012614 ER - TY - JOUR T1 - Climate-induced landsliding within the larch dominant permafrost zone of central Siberia AN - 1832656979; 779275-37 AB - Climate impact on landslide occurrence and spatial patterns were analyzed within the larch-dominant communities associated with continuous permafrost areas of central Siberia. We used high resolution satellite imagery (i.e. QuickBird, WorldView) to identify landslide scars over an area of 62 000 km (super 2) . Landslide occurrence was analyzed with respect to climate variables (air temperature, precipitation, drought index SPEI), and Gravity Recovery and Climate Experiment satellite derived equivalent of water thickness anomalies (EWTA). Landslides were found only on southward facing slopes, and the occurrence of landslides increased exponentially with increasing slope steepness. Lengths of landslides correlated positively with slope steepness. The observed upper elevation limit of landslides tended to coincide with the tree line. Observations revealed landslides occurrence was also found to be strongly correlated with August precipitation (r = 0.81) and drought index (r = 0.7), with June�July�August soil water anomalies (i.e., EWTA, r = 0.68�0.7), and number of thawing days (i.e., a number of days with t (sub max) > 0 degrees C; r = 0.67). A significant increase in the variance of soil water anomalies was observed, indicating that occurrence of landslides may increase even with a stable mean precipitation level. The key-findings of this study are (1) landslides occurrence increased within the permafrost zone of central Siberia in the beginning of the 21st century; (2) the main cause of increased landslides occurrence are extremes in precipitation and soil water anomalies; and (3) landslides occurrence are strongly dependent on relief features such as southward facing steep slopes. Copyright (Copyright) 2016 IOP Publishing Ltd JF - Environmental Research Letters AU - Kharuk, Viacheslav I AU - Shushpanov, Alexandr S AU - Im, Sergei T AU - Ranson, Kenneth J Y1 - 2016/04// PY - 2016 DA - April 2016 EP - Paper no. 045004 PB - IOP Publishing for Institute of Physics, Bristol VL - 11 IS - 4 KW - imagery KW - permafrost KW - communities KW - slopes KW - GRACE KW - ecosystems KW - atmospheric precipitation KW - vegetation KW - climate change KW - relief KW - drought KW - spatial distribution KW - Siberia KW - geographic information systems KW - tree line KW - mass movements KW - Asia KW - water KW - soils KW - elevation KW - statistical analysis KW - anomalies KW - satellite methods KW - thawing KW - landslides KW - terrains KW - information systems KW - remote sensing KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832656979?accountid=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=Environmental+Research+Letters&rft.atitle=Climate-induced+landsliding+within+the+larch+dominant+permafrost+zone+of+central+Siberia&rft.au=Kharuk%2C+Viacheslav+I%3BShushpanov%2C+Alexandr+S%3BIm%2C+Sergei+T%3BRanson%2C+Kenneth+J&rft.aulast=Kharuk&rft.aufirst=Viacheslav&rft.date=2016-04-01&rft.volume=11&rft.issue=4&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Environmental+Research+Letters&rft.issn=1748-9326&rft_id=info:doi/10.1088%2F1748-9326%2F11%2F4%2F045004 L2 - http://iopscience.iop.org/1748-9326 LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data supplied by IOP Publishing Ltd., London, United Kingdom N1 - Number of references - 42 N1 - Document feature - illus. incl. 3 tables, sketch map N1 - SuppNotes - Includes appendix N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - anomalies; Asia; atmospheric precipitation; climate change; communities; drought; ecosystems; elevation; geographic information systems; GRACE; imagery; information systems; landslides; mass movements; permafrost; relief; remote sensing; satellite methods; Siberia; slopes; soils; spatial distribution; statistical analysis; terrains; thawing; tree line; vegetation; water DO - http://dx.doi.org/10.1088/1748-9326/11/4/045004 ER - TY - JOUR T1 - Snow process estimation over the extratropical Andes using a data assimilation framework integrating MERRA data and Landsat imagery AN - 1828846104; 2016-086741 AB - A data assimilation framework was implemented with the objective of obtaining high-resolution retrospective snow water equivalent (SWE) estimates over several Andean study basins. The framework integrates Landsat fractional snow covered area (fSCA) images, a land surface and snow depletion model, and the Modern Era Retrospective Analysis for Research and Applications (MERRA) reanalysis as a forcing data set. The outputs are SWE and fSCA fields (1985-2015) at a resolution of 90 m that are consistent with the observed depletion record. Verification using in-situ snow surveys showed significant improvements in the accuracy of the SWE estimates relative to forward model estimates, with increases in correlation (0.49-0.87) and reductions in root mean square error (0.316 m to 0.129 m) and mean error (-0.221 m to 0.009 m). A sensitivity analysis showed that the framework is robust to variations in physiography, fSCA data availability and a priori precipitation biases. Results from the application to the headwater basin of the Aconcagua River showed how the forward model versus the fSCA-conditioned estimate resulted in different quantifications of the relationship between runoff and SWE, and different correlation patterns between pixel-wise SWE and ENSO. The illustrative results confirm the influence that ENSO has on snow accumulation for Andean basins draining into the Pacific, with ENSO explaining approximately 25% of the variability in near-peak (1 September) SWE values. Our results show how the assimilation of fSCA data results in a significant improvement upon MERRA-forced modeled SWE estimates, further increasing the utility of the MERRA data for high-resolution snow modeling applications. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Water Resources Research AU - Cortes, Gonzalo AU - Girotto, Manuela AU - Margulis, Steven Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 2582 EP - 2600 PB - American Geophysical Union, Washington, DC VL - 52 IS - 4 SN - 0043-1397, 0043-1397 KW - hydrology KW - Andes KW - imagery KW - snow water equivalent KW - MERRA method KW - Chile KW - satellite methods KW - South America KW - mountains KW - Landsat KW - El Nino Southern Oscillation KW - sensitivity analysis KW - snow KW - remote sensing KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1828846104?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Snow+process+estimation+over+the+extratropical+Andes+using+a+data+assimilation+framework+integrating+MERRA+data+and+Landsat+imagery&rft.au=Cortes%2C+Gonzalo%3BGirotto%2C+Manuela%3BMargulis%2C+Steven&rft.aulast=Cortes&rft.aufirst=Gonzalo&rft.date=2016-04-01&rft.volume=52&rft.issue=4&rft.spage=2582&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1002%2F2015WR018376 L2 - http://www.agu.org/journals/wr/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 55 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables, sketch map N1 - Last updated - 2016-10-25 N1 - CODEN - WRERAQ N1 - SubjectsTermNotLitGenreText - Andes; Chile; El Nino Southern Oscillation; hydrology; imagery; Landsat; MERRA method; mountains; remote sensing; satellite methods; sensitivity analysis; snow; snow water equivalent; South America DO - http://dx.doi.org/10.1002/2015WR018376 ER - TY - JOUR T1 - Seasonal heat and freshwater cycles in the Arctic Ocean in CMIP5 coupled models AN - 1819897989; 2016-078835 AB - This study examines the processes governing the seasonal response of the Arctic Ocean and sea ice to surface forcings as they appear in historical simulations of 14 Coupled Model Intercomparison Project Phase 5 coupled climate models. In both models and observations, the seasonal heat budget is dominated by a local balance between net surface heating and storage in the heat content of the ocean and in melting/freezing of sea ice. Observations suggest ocean heat storage is more important than sea ice melt, while in most of these models, sea ice melt dominates. Seasonal horizontal heat flux divergence driven by the seasonal cycle of volume transport is only important locally. In models and observations, the dominant terms in the basin-average seasonal freshwater budget are the storages of freshwater between the ocean and sea ice, and the exchange between the two. The largest external source term is continental discharge in early summer, which is an order of magnitude smaller. The appearance of sea ice (extent and volume) and also ocean stratification in both the heat and freshwater budgets provides two links between the budgets and provides two mechanisms for feedback. One consequence of such an interaction is the fact that models with strong/weak seasonal surface heating also have strong/weak seasonal haline and temperature stratification. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Oceans AU - Ding, Yanni AU - Carton, James A AU - Chepurin, Gennady A AU - Steele, Michael AU - Hakkinen, Sirpa Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 2043 EP - 2057 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 121 IS - 4 SN - 2169-9275, 2169-9275 KW - experimental studies KW - sea water KW - heat flux KW - numerical models KW - sea ice KW - fresh water KW - marine transport KW - temperature KW - melting KW - transport KW - stratification KW - ice KW - digital simulation KW - solar radiation KW - heating KW - Arctic Ocean KW - seasonal variations KW - climate KW - 07:Oceanography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819897989?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Seasonal+heat+and+freshwater+cycles+in+the+Arctic+Ocean+in+CMIP5+coupled+models&rft.au=Ding%2C+Yanni%3BCarton%2C+James+A%3BChepurin%2C+Gennady+A%3BSteele%2C+Michael%3BHakkinen%2C+Sirpa&rft.aulast=Ding&rft.aufirst=Yanni&rft.date=2016-04-01&rft.volume=121&rft.issue=4&rft.spage=2043&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Oceans&rft.issn=21699275&rft_id=info:doi/10.1002%2F2015JC011124 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 42 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2016-09-16 N1 - SubjectsTermNotLitGenreText - Arctic Ocean; climate; digital simulation; experimental studies; fresh water; heat flux; heating; ice; marine transport; melting; numerical models; sea ice; sea water; seasonal variations; solar radiation; stratification; temperature; transport DO - http://dx.doi.org/10.1002/2015JC011124 ER - TY - JOUR T1 - Electric field generation in Martian dust devils AN - 1800397459; 2016-055909 JF - Icarus AU - Barth, Erika L AU - Farrell, William M AU - Rafkin, Scot C R Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 253 EP - 265 PB - Elsevier, New York, NY VL - 268 SN - 0019-1035, 0019-1035 KW - three-dimensional models KW - clastic sediments KW - grain size KW - electrodynamics KW - electrical field KW - Mars KW - triboelectric effect KW - simulation KW - dust devils KW - terrestrial planets KW - planets KW - dust KW - sediments KW - particles KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800397459?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Electric+field+generation+in+Martian+dust+devils&rft.au=Barth%2C+Erika+L%3BFarrell%2C+William+M%3BRafkin%2C+Scot+C+R&rft.aulast=Barth&rft.aufirst=Erika&rft.date=2016-04-01&rft.volume=268&rft.issue=&rft.spage=253&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.12.020 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 65 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2016-06-30 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - clastic sediments; dust; dust devils; electrical field; electrodynamics; grain size; Mars; particles; planets; sediments; simulation; terrestrial planets; three-dimensional models; triboelectric effect DO - http://dx.doi.org/10.1016/j.icarus.2015.12.020 ER - TY - JOUR T1 - Mass balance of Mars' residual south polar cap from CTX images and other data AN - 1800397309; 2016-055902 JF - Icarus AU - Thomas, P C AU - Calvin, W AU - Cantor, B AU - Haberle, R AU - James, P B AU - Lee, S W Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 118 EP - 130 PB - Elsevier, New York, NY VL - 268 SN - 0019-1035, 0019-1035 KW - albedo KW - imagery KW - erosion KW - atmosphere KW - Mars KW - mapping KW - erosion rates KW - Context Camera KW - polar caps KW - terrestrial planets KW - morphology KW - planets KW - geography KW - deposition KW - mass balance KW - age KW - thickness KW - temporal distribution KW - scarps KW - climate KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800397309?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Mass+balance+of+Mars%27+residual+south+polar+cap+from+CTX+images+and+other+data&rft.au=Thomas%2C+P+C%3BCalvin%2C+W%3BCantor%2C+B%3BHaberle%2C+R%3BJames%2C+P+B%3BLee%2C+S+W&rft.aulast=Thomas&rft.aufirst=P&rft.date=2016-04-01&rft.volume=268&rft.issue=&rft.spage=118&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.12.038 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 46 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables, sketch maps N1 - Last updated - 2016-06-30 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - age; albedo; atmosphere; climate; Context Camera; deposition; erosion; erosion rates; geography; imagery; mapping; Mars; mass balance; morphology; planets; polar caps; scarps; temporal distribution; terrestrial planets; thickness DO - http://dx.doi.org/10.1016/j.icarus.2015.12.038 ER - TY - JOUR T1 - Stability within Jupiter's polar auroral "Swirl region" over moderate timescales AN - 1800396493; 2016-055904 JF - Icarus AU - Stallard, Tom S AU - Clarke, John T AU - Melin, Henrik AU - Miller, Steve AU - Nichols, Jon D AU - O'Donoghue, James AU - Johnson, Rosie E AU - Connerney, John E P AU - Satoh, Takehiko AU - Perry, Michael Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 145 EP - 155 PB - Elsevier, New York, NY VL - 268 SN - 0019-1035, 0019-1035 KW - ionosphere KW - Swirl region KW - polar regions KW - imagery KW - aurorae KW - magnetosphere KW - Jupiter KW - stability KW - atmosphere KW - infrared spectra KW - giant planets KW - protonated molecular hydrogen KW - planets KW - time factor KW - hydrogen KW - ultraviolet spectra KW - spectra KW - outer planets KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800396493?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Stability+within+Jupiter%27s+polar+auroral+%22Swirl+region%22+over+moderate+timescales&rft.au=Stallard%2C+Tom+S%3BClarke%2C+John+T%3BMelin%2C+Henrik%3BMiller%2C+Steve%3BNichols%2C+Jon+D%3BO%27Donoghue%2C+James%3BJohnson%2C+Rosie+E%3BConnerney%2C+John+E+P%3BSatoh%2C+Takehiko%3BPerry%2C+Michael&rft.aulast=Stallard&rft.aufirst=Tom&rft.date=2016-04-01&rft.volume=268&rft.issue=&rft.spage=145&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.12.044 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 36 N1 - PubXState - NY N1 - Document feature - illus. N1 - Last updated - 2016-06-30 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - atmosphere; aurorae; giant planets; hydrogen; imagery; infrared spectra; ionosphere; Jupiter; magnetosphere; outer planets; planets; polar regions; protonated molecular hydrogen; spectra; stability; Swirl region; time factor; ultraviolet spectra DO - http://dx.doi.org/10.1016/j.icarus.2015.12.044 ER - TY - JOUR T1 - Atmospheric tides in Gale Crater, Mars AN - 1800396338; 2016-055896 JF - Icarus AU - Guzewich, Scott D AU - Newman, C E AU - de la Torre Juarez, M AU - Wilson, R J AU - Lemmon, M AU - Smith, M D AU - Kahanpaa, H AU - Harri, A M Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 37 EP - 49 PB - Elsevier, New York, NY VL - 268 SN - 0019-1035, 0019-1035 KW - dust storms KW - albedo KW - general circulation models KW - thermal inertia KW - clastic sediments KW - solar forcing KW - atmosphere KW - Mars KW - Gale Crater KW - tides KW - terrestrial planets KW - planets KW - topography KW - dust KW - solar radiation KW - sediments KW - Mars Science Laboratory KW - diurnal variations KW - climate forcing KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800396338?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Atmospheric+tides+in+Gale+Crater%2C+Mars&rft.au=Guzewich%2C+Scott+D%3BNewman%2C+C+E%3Bde+la+Torre+Juarez%2C+M%3BWilson%2C+R+J%3BLemmon%2C+M%3BSmith%2C+M+D%3BKahanpaa%2C+H%3BHarri%2C+A+M&rft.aulast=Guzewich&rft.aufirst=Scott&rft.date=2016-04-01&rft.volume=268&rft.issue=&rft.spage=37&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.12.028 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 48 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2016-06-30 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - albedo; atmosphere; clastic sediments; climate forcing; diurnal variations; dust; dust storms; Gale Crater; general circulation models; Mars; Mars Science Laboratory; planets; sediments; solar forcing; solar radiation; terrestrial planets; thermal inertia; tides; topography DO - http://dx.doi.org/10.1016/j.icarus.2015.12.028 ER - TY - JOUR T1 - Pathways for energization of Ca in Mercury's exosphere AN - 1800395965; 2016-055895 JF - Icarus AU - Killen, Rosemary M Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 32 EP - 36 PB - Elsevier, New York, NY VL - 268 SN - 0019-1035, 0019-1035 KW - calcium KW - alkaline earth metals KW - magnesium KW - shock waves KW - dissociation KW - photochemistry KW - atmosphere KW - impacts KW - temperature KW - exosphere KW - terrestrial planets KW - volatilization KW - planets KW - photolysis KW - metals KW - Mercury Planet KW - oxides KW - high temperature KW - electrons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800395965?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Pathways+for+energization+of+Ca+in+Mercury%27s+exosphere&rft.au=Killen%2C+Rosemary+M&rft.aulast=Killen&rft.aufirst=Rosemary&rft.date=2016-04-01&rft.volume=268&rft.issue=&rft.spage=32&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.12.035 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 39 N1 - PubXState - NY N1 - Last updated - 2016-06-30 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - alkaline earth metals; atmosphere; calcium; dissociation; electrons; exosphere; high temperature; impacts; magnesium; Mercury Planet; metals; oxides; photochemistry; photolysis; planets; shock waves; temperature; terrestrial planets; volatilization DO - http://dx.doi.org/10.1016/j.icarus.2015.12.035 ER - TY - JOUR T1 - 1D-coupled photochemical model of neutrals, cations and anions in the atmosphere of Titan AN - 1800395851; 2016-055913 JF - Icarus AU - Dobrijevic, Michel AU - Loison, J C AU - Hickson, K M AU - Gronoff, G Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 313 EP - 339 PB - Elsevier, New York, NY VL - 268 SN - 0019-1035, 0019-1035 KW - ionosphere KW - icy satellites KW - anions KW - one-dimensional models KW - photochemistry KW - coupling KW - atmosphere KW - ions KW - nitrogen KW - absorption KW - organic compounds KW - stratosphere KW - chemical reactions KW - hydrogen KW - carbon KW - hydrocarbons KW - Titan Satellite KW - cations KW - satellites KW - uncertainty KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800395851?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=1D-coupled+photochemical+model+of+neutrals%2C+cations+and+anions+in+the+atmosphere+of+Titan&rft.au=Dobrijevic%2C+Michel%3BLoison%2C+J+C%3BHickson%2C+K+M%3BGronoff%2C+G&rft.aulast=Dobrijevic&rft.aufirst=Michel&rft.date=2016-04-01&rft.volume=268&rft.issue=&rft.spage=313&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.12.045 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 58 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-06-30 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - absorption; anions; atmosphere; carbon; cations; chemical reactions; coupling; hydrocarbons; hydrogen; icy satellites; ionosphere; ions; nitrogen; one-dimensional models; organic compounds; photochemistry; satellites; stratosphere; Titan Satellite; uncertainty DO - http://dx.doi.org/10.1016/j.icarus.2015.12.045 ER - TY - JOUR T1 - Meteorites found on Misfits Flat dry lake, Nevada AN - 1800392407; 2016-056363 AB - Meteorites have been found on the small Misfits Flat dry lakebed near Stagecoach, Nevada (119.382W, +39.348N). Since the first find on Sept. 22, 2013, a total of 58 stones of weathering stage W2/3 with a combined mass of 339 g have been collected in 19 visits to the area. This small (3.3 X 3.6 km) lakebed is now a newly designated dense collection area (DCA). Most meteorites were found in a small 350 X 180 m area along the north shore and most are fragments of several broken individual stones. Three of these fragments were classified as an LL4/5 of shock stage S2, now named Misfits Flat 001, one of which (stone MF33) fell 8.1 + or - 1.3 ka ago based on the (super 14) C terrestrial age, assuming it came from a 20-80 cm diameter meteoroid. In addition, a small darkly crusted meteorite MF34, now named Misfits Flat 002, was found 820 m WSW from the main mass. This meteorite is classified as an LL5 ordinary chondrite with shock stage S4/5. The meteorite is saturated in (super 14) C at 63 dpm kg (super -1) , suggesting it originated from the center of a 0.5 m diameter meteoroid, or deep inside a approximately 1.0 m meteoroid, less than 300 yr ago. Accounts exist of a fireball seen at 13:15 UT on March 2, 1895, that are consistent with the find location of Misfits Flat 002. Abstract Copyright Published 2016. This article is a U.S. Government work and is in the public domain in the USA. JF - Meteoritics & Planetary Science AU - Harlan, Scott AU - Jenniskens, Peter AU - Zolensky, Michael E AU - Yin, Qing-Zhu AU - Verosub, Kenneth L AU - Rowland, Douglas J AU - Sanborn, Matthew AU - Huyskens, Magdalena AU - Creager, Emily R AU - Jull, A J Timothy Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 757 EP - 772 PB - Meteoritical Society, Fayetteville, AR VL - 51 IS - 4 SN - 1086-9379, 1086-9379 KW - United States KW - ordinary chondrites KW - stony meteorites KW - isotopes KW - mass spectra KW - playas KW - meteoroids KW - Lyon County Nevada KW - Holocene KW - mass KW - Cenozoic KW - meteorites KW - radioactive isotopes KW - mineral composition KW - carbon KW - Misfits Flat Meteorites KW - spectra KW - chondrites KW - chemical composition KW - Nevada KW - Quaternary KW - Stagecoach Nevada KW - terrestrial age KW - LL chondrites KW - metamorphism KW - weathering KW - ICP mass spectra KW - magnetic susceptibility KW - classification KW - fireballs KW - C-14 KW - Misfits Flat 002 KW - shock metamorphism KW - Misfits Flat 001 KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800392407?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+found+on+Misfits+Flat+dry+lake%2C+Nevada&rft.au=Harlan%2C+Scott%3BJenniskens%2C+Peter%3BZolensky%2C+Michael+E%3BYin%2C+Qing-Zhu%3BVerosub%2C+Kenneth+L%3BRowland%2C+Douglas+J%3BSanborn%2C+Matthew%3BHuyskens%2C+Magdalena%3BCreager%2C+Emily+R%3BJull%2C+A+J+Timothy&rft.aulast=Harlan&rft.aufirst=Scott&rft.date=2016-04-01&rft.volume=51&rft.issue=4&rft.spage=757&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12619 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 45 N1 - PubXState - AR N1 - Document feature - illus. incl. 4 tables, sketch map N1 - Last updated - 2016-11-17 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - C-14; carbon; Cenozoic; chemical composition; chondrites; classification; fireballs; Holocene; ICP mass spectra; isotopes; LL chondrites; Lyon County Nevada; magnetic susceptibility; mass; mass spectra; metamorphism; meteorites; meteoroids; mineral composition; Misfits Flat Meteorites; Misfits Flat 001; Misfits Flat 002; Nevada; ordinary chondrites; playas; Quaternary; radioactive isotopes; shock metamorphism; spectra; Stagecoach Nevada; stony meteorites; terrestrial age; United States; weathering DO - http://dx.doi.org/10.1111/maps.12619 ER - TY - JOUR T1 - CO (sub 2) release due to impact devolatilization of carbonate; results of shock experiments AN - 1800392136; 2016-056356 AB - A study of pure, single crystal calcite shocked to pressures from 9.0 to 60.8 GPa was conducted to address contradictory data for carbonate shock behavior. The recovered materials were analyzed optically and by transmission electron microscopy (TEM), as well as by thermogravimetry (TGA), X-ray diffraction (XRD), and Raman-spectroscopy. In thin section, progressive comminution of calcite is observed although grains remain birefringent to at least 60.8 GPa. TGA analysis reveals a positive correlation between percent of mass loss due to shock and increasing shock pressure (R = 0.77) and suggests that shock loading leads to the modest removal of structural volatiles in this pressure range. XRD patterns of shocked Iceland spar samples produce peaks that are qualitatively and quantitatively less intense, more diffuse, and shift to lower degrees 2theta . However, the regularity observed in these shocked powder patterns suggests that structures with very uniform unit cell separations persist to shock pressures as high as 60.8 GPa. Raman spectral analyses indicate no band asymmetry and no systematic peak shifting or broadening. TEM micrographs display progressively diminishing crystallite domain sizes. Selected area electron diffraction (SAED) patterns reveal no signatures of amorphous material. These data show that essentially intact calcite is recovered at shock pressures up to 60.8 GPa with only slight mass loss ( approximately 7%). This work suggests that the amount of CO (sub 2) gas derived from shock devolatilization of carbonate by large meteorite impacts into carbonate targets has been (substantially) overestimated. Abstract Copyright Published 2016. This article is a U.S. Government work and is in the public domain in the USA. JF - Meteoritics & Planetary Science AU - Bell, Mary Sue Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 619 EP - 646 PB - Meteoritical Society, Fayetteville, AR VL - 51 IS - 4 SN - 1086-9379, 1086-9379 KW - X-ray diffraction data KW - electron diffraction data KW - microstructure KW - unit cell KW - carbon dioxide KW - Iceland spar KW - volatilization KW - chemical reactions KW - spectra KW - geochemistry KW - P-T conditions KW - experimental studies KW - pressure KW - loading KW - electron microscopy data KW - cosmochemistry KW - impacts KW - deformation KW - metamorphism KW - high pressure KW - TEM data KW - calcite KW - volatiles KW - Raman spectra KW - planetology KW - petrography KW - TGA data KW - carbonates KW - shock metamorphism KW - birefringence KW - 04:Extraterrestrial geology KW - 17A:General geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800392136?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=CO+%28sub+2%29+release+due+to+impact+devolatilization+of+carbonate%3B+results+of+shock+experiments&rft.au=Bell%2C+Mary+Sue&rft.aulast=Bell&rft.aufirst=Mary&rft.date=2016-04-01&rft.volume=51&rft.issue=4&rft.spage=619&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12613 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 87 N1 - PubXState - AR N1 - Document feature - illus. incl. 7 tables N1 - Last updated - 2016-06-30 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - birefringence; calcite; carbon dioxide; carbonates; chemical reactions; cosmochemistry; deformation; electron diffraction data; electron microscopy data; experimental studies; geochemistry; high pressure; Iceland spar; impacts; loading; metamorphism; microstructure; P-T conditions; petrography; planetology; pressure; Raman spectra; shock metamorphism; spectra; TEM data; TGA data; unit cell; volatiles; volatilization; X-ray diffraction data DO - http://dx.doi.org/10.1111/maps.12613 ER - TY - JOUR T1 - X-ray computed tomography imaging; a not-so-nondestructive technique AN - 1800391954; 2016-056367 AB - X-ray computed tomography has become a popular means for examining the interiors of meteorites and has been advocated for routine curation and for the examination of samples returned by missions. Here, we report the results of a blind test that indicate that CT imaging deposits a considerable radiation dose in a meteorite and seriously compromises its natural radiation record. Ten vials of the Bruderheim L6 chondrite were placed in CT imager and exposed to radiation levels typical for meteorite studies. Half were retained as controls. Their thermoluminescence (TL) properties were then measured in a blind test. Five of the samples had TL data unaltered from their original ( approximately 10 cps) while five had very strong signals ( approximately 20,000 cps). It was therefore very clear which samples had been in the CT scanner. For comparison, the natural TL signal from Antarctic meteorites is approximately 5000-50,000 cps. Using the methods developed for Antarctic meteorites, the apparent dose absorbed by the five test samples was calculated to be 83 + or - 5 krad, comparable with the highest doses observed in Antarctic meteorites and freshly fallen meteorites. While these results do not preclude the use of CT scanners when scientifically justified, it should be remembered that the record of radiation exposure to ionizing radiations for the sample will be destroyed and that TL, or the related optically stimulated luminescence, are the primary modern techniques for radiation dosimetry. This is particularly important with irreplaceable samples, such as meteorite main masses, returned samples, and samples destined for archive. Abstract Copyright The Meteoritical Society, 2016. JF - Meteoritics & Planetary Science AU - Sears, Derek W G AU - Sears, Hazel AU - Ebel, Denton S AU - Wallace, Sean AU - Friedrich, Jon M Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 833 EP - 838 PB - Meteoritical Society, Fayetteville, AR VL - 51 IS - 4 SN - 1086-9379, 1086-9379 KW - tomography KW - methods KW - ordinary chondrites KW - experimental studies KW - stony meteorites KW - radioactivity KW - radiation damage KW - thermoluminescence KW - L chondrites KW - Bruderheim Meteorite KW - meteorites KW - curation KW - X-ray computed tomography KW - optically stimulated luminescence KW - computed tomography KW - X-ray analysis KW - chondrites KW - 05B:Petrology of meteorites and tektites KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800391954?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=X-ray+computed+tomography+imaging%3B+a+not-so-nondestructive+technique&rft.au=Sears%2C+Derek+W+G%3BSears%2C+Hazel%3BEbel%2C+Denton+S%3BWallace%2C+Sean%3BFriedrich%2C+Jon+M&rft.aulast=Sears&rft.aufirst=Derek+W&rft.date=2016-04-01&rft.volume=51&rft.issue=4&rft.spage=833&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12622 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 20 N1 - PubXState - AR N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2016-06-30 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - Bruderheim Meteorite; chondrites; computed tomography; curation; experimental studies; L chondrites; meteorites; methods; optically stimulated luminescence; ordinary chondrites; radiation damage; radioactivity; stony meteorites; thermoluminescence; tomography; X-ray analysis; X-ray computed tomography DO - http://dx.doi.org/10.1111/maps.12622 ER - TY - JOUR T1 - Rare earth element measurements and mapping of minerals in the Allende CAI, 7R19-1, by NanoSIMS ion microprobe AN - 1800391405; 2016-056366 AB - We have established analytical procedures for quantitative rare earth element (REE) measurements by NanoSIMS 50L ion microprobe with 2-10 mu m spatial resolution. Measurements are performed by multidetection using energy filtering under several static magnetic field settings. Relative sensitivity factors and REE oxide/REE element secondary ion ratios that we determined for the NanoSIMS match values previously determined for other ion microprobes. REE measurements of 100 ppm REE glass standards yielded reproducibility and accuracy of 0.5-2.5% and 5-15%, respectively. REE measurements of minerals of an Allende type-A CAI, 7R19-1, were performed using three different methods: spot analysis, line profile, and imaging. These data are in excellent agreement with previous REE measurements of this inclusion by IMS-3f ion microprobe. The higher spatial resolution NanoSIMS measurements provide additional insight into the formation process of this CAI and offer a promising new tool for analysis of fine-grained and complexly zoned materials. Abstract Copyright The Meteoritical Society, 2016. JF - Meteoritics & Planetary Science AU - Ito, Motoo AU - Messenger, Scott Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 818 EP - 832 PB - Meteoritical Society, Fayetteville, AR VL - 51 IS - 4 SN - 1086-9379, 1086-9379 KW - sorosilicates KW - silicates KW - methods KW - stony meteorites KW - ion probe data KW - calcium-aluminum inclusions KW - mass spectra KW - CV chondrites KW - Allende Meteorite KW - meteorites KW - melilite group KW - pyroxene group KW - clinopyroxene KW - melilite KW - standard materials KW - inclusions KW - orthosilicates KW - spectra KW - rare earths KW - fassaite KW - diopside KW - chondrites KW - chain silicates KW - precision KW - carbonaceous chondrites KW - metals KW - NanoSIMS KW - accuracy KW - 05B:Petrology of meteorites and tektites KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800391405?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Rare+earth+element+measurements+and+mapping+of+minerals+in+the+Allende+CAI%2C+7R19-1%2C+by+NanoSIMS+ion+microprobe&rft.au=Ito%2C+Motoo%3BMessenger%2C+Scott&rft.aulast=Ito&rft.aufirst=Motoo&rft.date=2016-04-01&rft.volume=51&rft.issue=4&rft.spage=818&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12623 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 44 N1 - PubXState - AR N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2016-06-30 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - accuracy; Allende Meteorite; calcium-aluminum inclusions; carbonaceous chondrites; chain silicates; chondrites; clinopyroxene; CV chondrites; diopside; fassaite; inclusions; ion probe data; mass spectra; melilite; melilite group; metals; meteorites; methods; NanoSIMS; orthosilicates; precision; pyroxene group; rare earths; silicates; sorosilicates; spectra; standard materials; stony meteorites DO - http://dx.doi.org/10.1111/maps.12623 ER - TY - JOUR T1 - Ni/S/Cl systematics and the origin of impact-melt glasses in Martian meteorite Elephant Moraine 79001 AN - 1800391213; 2016-056358 AB - Martian meteorite Elephant Moraine A79001 (EET 79001) has received considerable attention for the unusual composition of its shock melt glass, particularly its enrichment in sulfur relative to the host shergottite. It has been hypothesized that Martian regolith was incorporated into the melt or, conversely, that the S-enrichment stems from preferential melting of sulfide minerals in the host rock during shock. We present results from an electron microprobe study of EET 79001 including robust measurements of major and trace elements in the shock melt glass (S, Cl, Ni, Co, V, and Sc) and minerals in the host rock (Ni, Co, and V). We find that both S and major element abundances can be reconciled with previous hypotheses of regolith incorporation and/or excess sulfide melt. However, trace element characteristics of the shock melt glass, particularly Ni and Cl abundances relative to S, cannot be explained either by the incorporation of regolith or sulfide minerals. We therefore propose an alternative hypothesis whereby, prior to shock melting, portions of EET 79001 experienced acid-sulfate leaching of the mesostasis, possibly groundmass feldspar, and olivine, producing Al-sulfates that were later incorporated into the shock melt, which then quenched to glass. Such activity in the Martian near-surface is supported by observations from the Mars Exploration Rovers and laboratory experiments. Our preimpact alteration model, accompanied by the preferential survival of olivine and excess melting of feldspar during impact, explains the measured trace element abundances better than either the regolith incorporation or excess sulfide melting hypothesis does. Abstract Copyright Published 2016. This article is a U.S. Government work and is in the public domain in the USA. JF - Meteoritics & Planetary Science AU - Schrader, Christian M AU - Cohen, Barbara A AU - Donovan, John J AU - Vicenzi, Edward P Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 663 EP - 680 PB - Meteoritical Society, Fayetteville, AR VL - 51 IS - 4 SN - 1086-9379, 1086-9379 KW - stony meteorites KW - Martian meteorites KW - enrichment KW - halogens KW - Mars KW - Elephant Moraine Meteorites KW - metasomatism KW - melts KW - electron probe data KW - SNC Meteorites KW - meteorites KW - impact melts KW - EETA 79001 KW - melting KW - major elements KW - metamorphic rocks KW - hydrothermal alteration KW - trace elements KW - depletion KW - chlorine KW - chemical weathering KW - impactites KW - secondary minerals KW - achondrites KW - weathering KW - terrestrial planets KW - planets KW - shergottite KW - metals KW - nickel 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/1800391213?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Ni%2FS%2FCl+systematics+and+the+origin+of+impact-melt+glasses+in+Martian+meteorite+Elephant+Moraine+79001&rft.au=Schrader%2C+Christian+M%3BCohen%2C+Barbara+A%3BDonovan%2C+John+J%3BVicenzi%2C+Edward+P&rft.aulast=Schrader&rft.aufirst=Christian&rft.date=2016-04-01&rft.volume=51&rft.issue=4&rft.spage=663&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12612 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 61 N1 - PubXState - AR N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2016-06-30 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - achondrites; chemical weathering; chlorine; depletion; EETA 79001; electron probe data; Elephant Moraine Meteorites; enrichment; halogens; hydrothermal alteration; impact melts; impactites; major elements; Mars; Martian meteorites; melting; melts; metals; metamorphic rocks; metasomatism; meteorites; nickel; planets; regolith; secondary minerals; shergottite; SNC Meteorites; stony meteorites; sulfides; sulfur; terrestrial planets; trace elements; weathering DO - http://dx.doi.org/10.1111/maps.12612 ER - TY - JOUR T1 - Microstructure-specific carbon isotopic signatures of organic matter from approximately 3.5 Ga cherts of the Pilbara Craton support a biologic origin AN - 1797539682; 2016-051071 AB - The approximately 3.5 Ga Dresser Formation from the North Pole Dome of the Pilbara Craton (Western Australia) contains some of the oldest evidence for life on Earth. Here, we present a detailed study of microstructure-specific carbon isotopic composition of organic matter (OM) preserved in Dresser Formation bedded cherts and hydrothermal chert vein using in situ Secondary-Ion Mass Spectrometry (SIMS). The OM in these rocks occurs mainly as clots that, together with minor fine OM layers and laminae, are considered primary textures formed prior to host rock lithification. Other than rare OM-rich stylolites, no evidence was found for later OM migration beyond the micrometer scale. Average delta (super 13) C(OM) values in specific microstructural types range between -33.6 ppm and -25.7 ppm. No correlation is seen between measured delta (super 13) C values and H/C ratios in the studied OM microstructures. This lack of correlation and the low metamorphic grade of the rocks studied argue against significant modification of OM isotopic composition by later metamorphic alteration. It is thus concluded that the range of delta (super 13) C values found in the samples represents primary OM isotopic variability. Within some individual samples variable delta (super 13) C(OM) values are correlated with specific microstructural types. This observation is not consistent with solely abiotic OM formation via Fisher-Tropsch type reactions. When compared with associated delta (super 13) C(ankerite) values, average delta (super 13) C(OM) values indicate C isotopic fractionation [Delta (super 13) C(Ank-OM)] of 25-33 ppm, which translates to dissolved CO (sub 2) -OM isotopic fractionation [Delta (super 13) C(CO (sub 2) -OM)] of 20-30 ppm. This range of Delta (super 13) C(CO (sub 2) -OM) is consistent with enzymatic C fixation via the Calvin cycle utilized by photoautotrophs and the reductive acetyl-CoA pathway utilized by chemolithoautotrophs. Photosynthetic OM formation is supported by the relatively shallow water depth inferred for the Dresser environment and the restricted occurrence of stromatolites to shallow water deposits in this unit, whereas chemolithosynthesis is supported by the abundance of OM in sub-seafloor hydrothermal chert veins. The range of delta (super 13) C(OM) values observed in the samples may therefore represent the remains of different organisms utilizing different C-fixation pathways. Other biologic effects, such as the growth rate and density of microbial communities, and further heterotrophic overprinting of the autotrophic biomass may have also contributed to the observed range of delta (super 13) C(OM) values. Abstract Copyright (2016) Elsevier, B.V. JF - Precambrian Research AU - Morag, Navot AU - Williford, Kenneth H AU - Kitajima, Kouki AU - Philippot, Pascal AU - Van Kranendonk, Martin J AU - Lepot, Kevin AU - Thomazo, Christophe AU - Valley, John W Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 429 EP - 449 PB - Elsevier, Amsterdam VL - 275 SN - 0301-9268, 0301-9268 KW - Pilbara Craton KW - Warrawoona Group KW - lithostratigraphy KW - volcanic rocks KW - U/Pb KW - ion probe data KW - isotopes KW - igneous rocks KW - Dresser Formation KW - Western Australia KW - mass spectra KW - stable isotopes KW - sedimentary rocks KW - dates KW - carbon KW - basalts KW - sedimentology KW - absolute age KW - Australia KW - Archean KW - spectra KW - depositional environment KW - sedimentary structures KW - chemically precipitated rocks KW - Precambrian KW - Australasia KW - isotope ratios KW - biogenic structures KW - biochemistry KW - C-13/C-12 KW - sedimentation KW - basin analysis KW - stromatolites KW - organic compounds KW - biogenic processes KW - paleoenvironment KW - North Pole KW - chert KW - carbonates KW - microfossils KW - 12:Stratigraphy KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1797539682?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Microstructure-specific+carbon+isotopic+signatures+of+organic+matter+from+approximately+3.5+Ga+cherts+of+the+Pilbara+Craton+support+a+biologic+origin&rft.au=Morag%2C+Navot%3BWilliford%2C+Kenneth+H%3BKitajima%2C+Kouki%3BPhilippot%2C+Pascal%3BVan+Kranendonk%2C+Martin+J%3BLepot%2C+Kevin%3BThomazo%2C+Christophe%3BValley%2C+John+W&rft.aulast=Morag&rft.aufirst=Navot&rft.date=2016-04-01&rft.volume=275&rft.issue=&rft.spage=429&rft.isbn=&rft.btitle=&rft.title=Precambrian+Research&rft.issn=03019268&rft_id=info:doi/10.1016%2Fj.precamres.2016.01.014 L2 - http://www.sciencedirect.com/science/journal/03019268 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 132 N1 - Document feature - illus. incl. 1 table, geol. sketch map N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-08-18 N1 - CODEN - PCBRBY N1 - SubjectsTermNotLitGenreText - absolute age; Archean; Australasia; Australia; basalts; basin analysis; biochemistry; biogenic processes; biogenic structures; C-13/C-12; carbon; carbonates; chemically precipitated rocks; chert; dates; depositional environment; Dresser Formation; igneous rocks; ion probe data; isotope ratios; isotopes; lithostratigraphy; mass spectra; microfossils; North Pole; organic compounds; paleoenvironment; Pilbara Craton; Precambrian; sedimentary rocks; sedimentary structures; sedimentation; sedimentology; spectra; stable isotopes; stromatolites; U/Pb; volcanic rocks; Warrawoona Group; Western Australia DO - http://dx.doi.org/10.1016/j.precamres.2016.01.014 ER - TY - JOUR T1 - Simulating the Black Saturday 2009 smoke plume with an interactive composition-climate model: Sensitivity to emissions amount, timing, and injection height AN - 1794501155; PQ0003149723 AB - We simulated the high-altitude smoke plume from the early February 2009 Black Saturday bushfires in southeastern Australia using the NASA Goddard Institute for Space Studies ModelE2. To the best of our knowledge, this is the first single-plume analysis of biomass burning emissions injected directly into the upper troposphere/lower stratosphere (UTLS) using a full-complexity composition-climate model. We compared simulated carbon monoxide (CO) to a new Aura Tropospheric Emission Spectrometer/Microwave Limb Sounder joint CO retrieval, focusing on the plume's initial transport eastward, anticyclonic circulation to the north of New Zealand, westward transport in the lower stratospheric easterlies, and arrival over Africa at the end of February. Our goal was to determine the sensitivity of the simulated plume to prescribed injection height, emissions amount, and emissions timing from different sources for a full-complexity model when compared to Aura. The most realistic plumes were obtained using injection heights in the UTLS, including one drawn from ground-based radar data. A 6h emissions pulse or emissions tied to independent estimates of hourly fire behavior produced a more realistic plume in the lower stratosphere compared to the same emissions amount being released evenly over 12 or 24h. Simulated CO in the plume was highly sensitive to the differences between emissions amounts estimated from the Global Fire Emissions Database and from detailed, ground-based estimates of fire growth. The emissions amount determined not only the CO concentration of the plume but also the proportion of the plume that entered the stratosphere. We speculate that this is due to either or both nonlinear CO loss with a weakened OH sink or plume self-lofting driven by shortwave absorption of the coemitted aerosols. Key Points * Stratospheric plume fate was highly sensitive to emissions height, amount, and timing * There were nonlinear relationships between emissions and atmospheric CO in the UTLS * A possible reason is diabatic self-lofting of the plume through shortwave absorption JF - Journal of Geophysical Research: Atmospheres AU - Field, Robert D AU - Luo, Ming AU - Fromm, Mike AU - Voulgarakis, Apostolos AU - Mangeon, Stephane AU - Worden, John AD - NASA Goddard Institute for Space Studies, New York, New York, USA. Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 4296 EP - 4316 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 121 IS - 8 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - PSE, Australia KW - Atmospheric pollution models KW - Sinks KW - Anticyclonic circulation KW - Injection KW - Carbon monoxide KW - Growth KW - Carbon KW - Model sensitivity KW - Microwaves KW - PSE, New Zealand KW - Absorption KW - Plumes KW - Modelling KW - Fires KW - Aerosols KW - Fire behavior KW - Troposphere KW - Smoke plumes KW - Stratosphere KW - Smoke KW - Databases KW - Radar KW - Africa KW - Q2 09102:Institutes and organizations KW - M2 551.510.42:Air Pollution (551.510.42) KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1794501155?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=Simulating+the+Black+Saturday+2009+smoke+plume+with+an+interactive+composition-climate+model%3A+Sensitivity+to+emissions+amount%2C+timing%2C+and+injection+height&rft.au=Field%2C+Robert+D%3BLuo%2C+Ming%3BFromm%2C+Mike%3BVoulgarakis%2C+Apostolos%3BMangeon%2C+Stephane%3BWorden%2C+John&rft.aulast=Field&rft.aufirst=Robert&rft.date=2016-04-01&rft.volume=121&rft.issue=8&rft.spage=4296&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2015JD024343 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-06-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Smoke; Carbon monoxide; Growth; Aerosols; Microwaves; Troposphere; Stratosphere; Modelling; Fires; Model sensitivity; Atmospheric pollution models; Fire behavior; Radar; Anticyclonic circulation; Smoke plumes; Databases; Carbon; Absorption; Sinks; Injection; Plumes; PSE, Australia; PSE, New Zealand; Africa DO - http://dx.doi.org/10.1002/2015JD024343 ER - TY - JOUR T1 - HLA-G expression and role in advanced-stage classical Hodgkin lymphoma AN - 1793764057 AB - Non-classical human leucocyte antigen (HLA)-G class I molecules have an important role in tumor immune escape mechanisms. We investigated HLA-G expression in lymphonode biopsies taken from 8 controls and 20 patients with advanced-stage classical Hodgkin lymphoma (cHL), in relationship to clinical outcomes and the HLA-G 14-basepair (14-bp) deletion-insertion (del-ins) polymorphism. Lymphnode tissue sections were stained using a specific murine monoclonal HLA-G antibody. HLA-G protein expression was higher in cHL patients than controls. In the group of PET-2 positive (positron emission tomography carried out after 2 cycles of standard chemotherapy) patients with a 2-year progression-free survival rate (PFS) of 40%, we observed high HLA-G protein expression within the tumor microenvironment with low expression on Hodgkin and Reed-Sternberg (HRS) cells. Conversely, PET-2 negative patients with a PFS of 86% had higher HLA-G protein expression levels on HRS cells compared to the microenvironment. Lower expression on HRS cells was significantly associated with the HLA-G 14-bp ins/ins genotype. These preliminary data suggest that the immunohistochemical pattern of HLA-G protein expression may represent a useful tool for a tailored therapy in patients with cHL, based on the modulation of HLA-G expression in relation to achievement of negative PET-2.These preliminary data suggest that the immunohistochemical pattern of HLA-G protein expression may represent a useful tool for a tailored therapy in patients with cHL, based on the modulation of HLA-G expression in relation to achievement of negative PET-2. JF - European Journal of Histochemistry : EJH AU - Caocci, G AU - Greco, M AU - Fanni, D AU - Senes, G AU - Littera, R AU - Lai, S AU - Risso, P AU - Carcassi, C AU - Faa, G AU - Nasa, G La Y1 - 2016 PY - 2016 DA - 2016 CY - Pavia PB - PAGEPress Publications VL - 60 IS - 2 SN - 1121760X KW - Biology--Cytology And Histology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1793764057?accountid=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=European+Journal+of+Histochemistry+%3A+EJH&rft.atitle=HLA-G+expression+and+role+in+advanced-stage+classical+Hodgkin+lymphoma&rft.au=Caocci%2C+G%3BGreco%2C+M%3BFanni%2C+D%3BSenes%2C+G%3BLittera%2C+R%3BLai%2C+S%3BRisso%2C+P%3BCarcassi%2C+C%3BFaa%2C+G%3BNasa%2C+G+La&rft.aulast=Caocci&rft.aufirst=G&rft.date=2016-04-01&rft.volume=60&rft.issue=2&rft.spage=&rft.isbn=&rft.btitle=&rft.title=European+Journal+of+Histochemistry+%3A+EJH&rft.issn=1121760X&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright PAGEPress Publications 2016 N1 - Last updated - 2016-06-04 ER - TY - JOUR T1 - QBO modulation of the mesopause gravity wave momentum flux over Tierra del Fuego AN - 1790945769; PQ0003114416 AB - The interannual variability of the mesosphere and lower thermosphere (MLT) gravity wave momentum flux over southern midlatitudes (53.7 degree S) has been studied using more than 7 years of meteor radar observations at Rio Grande, Argentina. A modulation, with periods similar to that of the equatorial stratospheric quasi-biennial oscillation (QBO), is observed in the vertical flux of zonal as well as meridional momentum. The QBO signal is largest in the zonal component during summer and is in phase with the stratospheric QBO at 50 hPa (21 km). The relation between the stratospheric QBO and the QBO modulation in the MLT gravity wave forcing (derived from the divergence of the momentum flux) was found to be consistent with that expected from the Holton-Tan effect coupled to the interhemispheric coupling mechanism. These results provide the first observational support for the existence of the midlatitude gravity wave forcing anomalies as hypothesized in the interhemispheric coupling mechanism. Key Points * A quasi-biennial oscillation is observed in the midlatitude MLT gravity wave momentum flux * The QBO modulation is best explained by interhemispheric coupling to the Holton-Tan effect JF - Geophysical Research Letters AU - Wit, R J AU - Janches, D AU - Fritts, D C AU - Hibbins, R E AD - Space Weather Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 4049 EP - 4055 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 43 IS - 8 SN - 0094-8276, 0094-8276 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Gravity Waves KW - Quasi-biennial oscillation KW - Variability KW - Divergence KW - Vertical flux KW - PSW, Argentina, Tierra del Fuego KW - Interannual variability KW - Radar KW - Gravity waves KW - Meteor radars KW - Momentum flux KW - Fluctuations KW - Momentum transfer KW - Q2 09262:Methods and instruments KW - SW 0810:General KW - M2 52:C. Astrophysics (52) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1790945769?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=QBO+modulation+of+the+mesopause+gravity+wave+momentum+flux+over+Tierra+del+Fuego&rft.au=Wit%2C+R+J%3BJanches%2C+D%3BFritts%2C+D+C%3BHibbins%2C+R+E&rft.aulast=Wit&rft.aufirst=R&rft.date=2016-04-01&rft.volume=43&rft.issue=8&rft.spage=4049&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2016GL068599 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Gravity waves; Momentum transfer; Quasi-biennial oscillation; Interannual variability; Meteor radars; Divergence; Momentum flux; Vertical flux; Gravity Waves; Variability; Radar; Fluctuations; PSW, Argentina, Tierra del Fuego DO - http://dx.doi.org/10.1002/2016GL068599 ER - TY - JOUR T1 - Frequency and impact of summertime stratospheric intrusions over Maryland during DISCOVER-AQ (2011): New evidence from NASA's GEOS-5 simulations AN - 1787981651; PQ0002975289 AB - Aircraft observations and ozonesonde profiles collected on 14 and 27 July 2011, during the Maryland month-long Deriving Information on Surface conditions from Column and Vertically Resolved Observations Relevant to Air Quality (DISCOVER-AQ) campaign, indicate the presence of stratospheric air just above the planetary boundary layer (PBL). This raises the question of whether summer stratospheric intrusions (SIs) elevate surface ozone levels and to what degree they influence background ozone levels and contribute to ozone production. We used idealized stratospheric air tracers, along with observations, to determine the frequency and extent of SIs in Maryland during July 2011. On 4 of 14 flight days, SIs were detected in layers that the aircraft encountered above the PBL from the coincidence of enhanced ozone, moderate CO, and low moisture. Satellite observations of lower tropospheric humidity confirmed the occurrence of synoptic-scale influence of SIs as do simulations with the GEOS-5 atmospheric general circulation model. The evolution of GEOS-5 stratospheric air tracers agrees with the timing and location of observed stratospheric influence and indicates that more than 50% of air in SI layers above the PBL had resided in the stratosphere within the previous 14days. Despite having a strong influence in the lower free troposphere, these events did not significantly affect surface ozone, which remained low on intrusion days. The model indicates similar frequencies of stratospheric influence during all summers from 2009 to 2013. GEOS-5 results suggest that over Maryland, the strong inversion capping the summer PBL limits downward mixing of stratospheric air during much of the day, helping to preserve low surface ozone associated with frontal passages that precede SIs. Key Points * Eastern U.S. stratospheric intrusions can strongly influence composition of lower free troposphere * High-resolution global models reproduce temporal evolution and dynamical structure of these events * Summertime stratospheric intrusions have implications for air quality JF - Journal of Geophysical Research: Atmospheres AU - Ott, Lesley E AU - Duncan, Bryan N AU - Thompson, Anne M AU - Diskin, Glenn AU - Fasnacht, Zachary AU - Langford, Andrew O AU - Lin, Meiyun AU - Molod, Andrea M AU - Nielsen, JEric AU - Pusede, Sally E AU - Wargan, Krzysztof AU - Weinheimer, Andrew J AU - Yoshida, Yasuko AD - NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 3687 EP - 3706 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 121 IS - 7 SN - 2169-897X, 2169-897X KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Boundary Layers KW - Air quality KW - Carbon monoxide KW - Tracers KW - Ozone in troposphere KW - Ozone production KW - Aircraft KW - Ozonesondes KW - Tropospheric humidity KW - Atmospheric boundary layer KW - Ozone KW - Modelling KW - Atmospheric pollution KW - Simulation Analysis KW - Aircraft observations KW - Troposphere KW - Humidity KW - Atmospheric circulation KW - Stratosphere KW - ANW, USA, Maryland KW - Inversions KW - Satellite data KW - Numerical simulations KW - General circulation models KW - Boundary layers KW - Evolution KW - M2 551.510.42:Air Pollution (551.510.42) KW - SW 0810:General KW - Q2 09105:Research programmes and expeditions UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1787981651?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=Frequency+and+impact+of+summertime+stratospheric+intrusions+over+Maryland+during+DISCOVER-AQ+%282011%29%3A+New+evidence+from+NASA%27s+GEOS-5+simulations&rft.au=Ott%2C+Lesley+E%3BDuncan%2C+Bryan+N%3BThompson%2C+Anne+M%3BDiskin%2C+Glenn%3BFasnacht%2C+Zachary%3BLangford%2C+Andrew+O%3BLin%2C+Meiyun%3BMolod%2C+Andrea+M%3BNielsen%2C+JEric%3BPusede%2C+Sally+E%3BWargan%2C+Krzysztof%3BWeinheimer%2C+Andrew+J%3BYoshida%2C+Yasuko&rft.aulast=Ott&rft.aufirst=Lesley&rft.date=2016-04-01&rft.volume=121&rft.issue=7&rft.spage=3687&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2015JD024052 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Carbon monoxide; Boundary layers; Humidity; Troposphere; Atmospheric circulation; Stratosphere; Inversions; Modelling; Ozone; Atmospheric pollution; Aircraft observations; Air quality; Ozone in troposphere; Ozone production; Satellite data; Numerical simulations; Ozonesondes; General circulation models; Atmospheric boundary layer; Tropospheric humidity; Tracers; Aircraft; Simulation Analysis; Boundary Layers; Evolution; ANW, USA, Maryland DO - http://dx.doi.org/10.1002/2015JD024052 ER - TY - JOUR T1 - Forest carbon fluxes: A satellite perspective AN - 1787978811; PQ0002932887 JF - Nature Climate Change AU - Morton, Douglas C AD - NASA's Goddard Space Flight Center, Greenbelt, Maryland 20771, USA Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 346 EP - 348 PB - Nature Publishing Group, The Macmillan Building London N1 9XW United Kingdom VL - 6 IS - 4 SN - 1758-678X, 1758-678X KW - ASFA 3: Aquatic Pollution & Environmental Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1787978811?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nature+Climate+Change&rft.atitle=Forest+carbon+fluxes%3A+A+satellite+perspective&rft.au=Morton%2C+Douglas+C&rft.aulast=Morton&rft.aufirst=Douglas&rft.date=2016-04-01&rft.volume=6&rft.issue=4&rft.spage=346&rft.isbn=&rft.btitle=&rft.title=Nature+Climate+Change&rft.issn=1758678X&rft_id=info:doi/10.1038%2Fnclimate2978 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Last updated - 2016-08-03 DO - http://dx.doi.org/10.1038/nclimate2978 ER - TY - JOUR T1 - Implications for climate sensitivity from the response to individual forcings AN - 1787965816; PQ0002932873 AB - Climate sensitivity to doubled CO sub(2) is a widely used metric for the large-scale response to external forcing. Climate models predict a wide range for two commonly used definitions: the transient climate response (TCR: the warming after 70 years of CO sub(2) concentrations that rise at 1% per year), and the equilibrium climate sensitivity (ECS: the equilibrium temperature change following a doubling of CO sub(2) concentrations). Many observational data sets have been used to constrain these values, including temperature trends over the recent past, inferences from palaeoclimate and process-based constraints from the modern satellite era. However, as the IPCC recently reported, different classes of observational constraints produce somewhat incongruent ranges. Here we show that climate sensitivity estimates derived from recent observations must account for the efficacy of each forcing active during the historical period. When we use single-forcing experiments to estimate these efficacies and calculate climate sensitivity from the observed twentieth-century warming, our estimates of both TCR and ECS are revised upwards compared to previous studies, improving the consistency with independent constraints. JF - Nature Climate Change AU - Marvel, Kate AU - Schmidt, Gavin A AU - Miller, Ron L AU - Nazarenko, Larissa S AD - Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA; NASA Goddard Institute for Space Studies, New York, New York 10025, USA Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 386 EP - 389 PB - Nature Publishing Group, The Macmillan Building London N1 9XW United Kingdom VL - 6 IS - 4 SN - 1758-678X, 1758-678X KW - Environment Abstracts; Meteorological & Geoastrophysical Abstracts KW - Temperature changes KW - Sensitivity KW - Historical account KW - Climate models KW - Climate KW - Climate change KW - Temperature KW - Remote sensing KW - Intergovernmental Panel on Climate Change KW - Satellites KW - Paleoclimates KW - Climate sensitivity KW - Temperature trends KW - Carbon dioxide KW - M2 551.583:Variations (551.583) KW - ENA 20:Weather Modification & Geophysical Change UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1787965816?accountid=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+Climate+Change&rft.atitle=Implications+for+climate+sensitivity+from+the+response+to+individual+forcings&rft.au=Marvel%2C+Kate%3BSchmidt%2C+Gavin+A%3BMiller%2C+Ron+L%3BNazarenko%2C+Larissa+S&rft.aulast=Marvel&rft.aufirst=Kate&rft.date=2016-04-01&rft.volume=6&rft.issue=4&rft.spage=386&rft.isbn=&rft.btitle=&rft.title=Nature+Climate+Change&rft.issn=1758678X&rft_id=info:doi/10.1038%2Fnclimate2888 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Last updated - 2016-11-09 N1 - SubjectsTermNotLitGenreText - Temperature changes; Climate models; Climate sensitivity; Climate change; Temperature trends; Intergovernmental Panel on Climate Change; Paleoclimates; Historical account; Sensitivity; Climate; Remote sensing; Temperature; Carbon dioxide; Satellites DO - http://dx.doi.org/10.1038/nclimate2888 ER - TY - JOUR T1 - The Grand Challenges of Organ Banking: Proceedings from the first global summit on complex tissue cryopreservation AN - 1785246174; PQ0002920333 AB - The first Organ Banking Summit was convened from Feb. 27 - March 1, 2015 in Palo Alto, CA, with events at Stanford University, NASA Research Park, and Lawrence Berkeley National Labs. Experts at the summit outlined the potential public health impact of organ banking, discussed the major remaining scientific challenges that need to be overcome in order to bank organs, and identified key opportunities to accelerate progress toward this goal. Many areas of public health could be revolutionized by the banking of organs and other complex tissues, including transplantation, oncofertility, tissue engineering, trauma medicine and emergency preparedness, basic biomedical research and drug discovery - and even space travel. Key remaining scientific sub-challenges were discussed including ice nucleation and growth, cryoprotectant and osmotic toxicities, chilling injury, thermo-mechanical stress, the need for rapid and uniform rewarming, and ischemia/reperfusion injury. A variety of opportunities to overcome these challenge areas were discussed, i.e. preconditioning for enhanced stress tolerance, nanoparticle rewarming, cyroprotectant screening strategies, and the use of cryoprotectant cocktails including ice binding agents. JF - Cryobiology AU - Lewis, Jedediah K AU - Bischof, John C AU - Braslavsky, Ido AU - Brockbank, Kelvin GM AU - Fahy, Gregory M AU - Fuller, Barry J AU - Rabin, Yoed AU - Tocchio, Alessandro AU - Woods, Erik J AU - Wowk, Brian G AU - Acker, Jason P AU - Giwa, Sebastian AD - Organ Preservation Alliance, NASA Research Park Bldg. 20, S. Akron Road, Moffett Field, CA, USA Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 169 EP - 182 PB - Elsevier B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 72 IS - 2 SN - 0011-2240, 0011-2240 KW - Biotechnology and Bioengineering Abstracts KW - Organ banking KW - Organ preservation KW - Cryobanking KW - Organ transplantation KW - Ice binding proteins KW - Antifreeze proteins KW - Cryoprotectant toxicity KW - Chilling injury KW - Cryoprotectant screening KW - Thermo-mechanical stress KW - Cryomacroscopy KW - Vitrification KW - Devitrification KW - Nanoparticle warming KW - Ischemia KW - Freeze tolerance KW - Persufflation KW - Perfusion KW - Ischemic preconditioning KW - Chilling KW - Ice KW - Space flight KW - Injuries KW - Stress KW - Toxicity KW - Tissue engineering KW - Cryopreservation KW - Public health KW - Trauma KW - Reperfusion KW - Drug discovery KW - Parks KW - Cryoprotectors KW - nanoparticles KW - Ice nucleation KW - W 30920:Tissue Engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1785246174?accountid=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=Cryobiology&rft.atitle=The+Grand+Challenges+of+Organ+Banking%3A+Proceedings+from+the+first+global+summit+on+complex+tissue+cryopreservation&rft.au=Lewis%2C+Jedediah+K%3BBischof%2C+John+C%3BBraslavsky%2C+Ido%3BBrockbank%2C+Kelvin+GM%3BFahy%2C+Gregory+M%3BFuller%2C+Barry+J%3BRabin%2C+Yoed%3BTocchio%2C+Alessandro%3BWoods%2C+Erik+J%3BWowk%2C+Brian+G%3BAcker%2C+Jason+P%3BGiwa%2C+Sebastian&rft.aulast=Lewis&rft.aufirst=Jedediah&rft.date=2016-04-01&rft.volume=72&rft.issue=2&rft.spage=169&rft.isbn=&rft.btitle=&rft.title=Cryobiology&rft.issn=00112240&rft_id=info:doi/10.1016%2Fj.cryobiol.2015.12.001 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Last updated - 2016-05-12 N1 - SubjectsTermNotLitGenreText - Chilling; Ice; Injuries; Space flight; Stress; Toxicity; Ischemia; Tissue engineering; Cryopreservation; Trauma; Public health; Reperfusion; Drug discovery; Parks; Cryoprotectors; Ice nucleation; nanoparticles DO - http://dx.doi.org/10.1016/j.cryobiol.2015.12.001 ER - TY - JOUR T1 - Comparison of the impact of the Arctic Oscillation and Eurasian teleconnection on interannual variation in East Asian winter temperatures and monsoon AN - 1780530265; PQ0002860275 AB - The large-scale impacts of the Arctic Oscillation (AO) and the Eurasian teleconnection (EU) on the East Asian winter climate are compared for the past 34 winters, focusing on (1) interannual monthly to seasonal temperature variability, (2) East Asian winter monsoon (EAWM), and (3) the Siberian high (SH) and cold surge. Regression analysis reveals warming by AO and cooling by EU over mid-latitude East Asia during their positive phase and vice versa (i.e., warm phase: +AO, -EU; cold phase: -AO, +EU). The EU impact was found to be comparable to the AO impact. For example, warm (cold) months during the warm (cold) AO phase are found clearly when the AO is in the same warm (cold) EU phase. No significant correlation was found between East Asian temperature and the AO when the warm (cold) AO coincided with the cold (warm) EU. The well-known relationship of strong (weak) SH during the cold (warm) AO phase was observed significantly more often when the AO was in the same cold (warm) EU phase. Also, the indices of EAWM, cold surge, and SH were more highly correlated with the EU than with the AO. The advective temperature change and associated circulation demonstrate that the large-scale field including the SH over the mid-latitude Asian inland is better represented by the EU, influencing the East Asian climate. These results suggest that the impact of EU should be considered more important than previously thought for a better understanding of East Asian winter temperature and monsoon variability. JF - Theoretical and Applied Climatology AU - Lim, Young-Kwon AU - Kim, Hae-Dong AD - NASA Goddard Space Flight Center, Goddard Earth Sciences Technology and Research (GESTAR)/I. M. Systems Group, Greenbelt, MD, USA, khd@kmu.ac.kr Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 267 EP - 279 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 124 IS - 1-2 SN - 0177-798X, 0177-798X KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts; Oceanic Abstracts; Meteorological & Geoastrophysical Abstracts KW - Regression Analysis KW - Variability KW - Climate change KW - Winter temperatures KW - Winter KW - Applied climatology KW - Seasonal variability KW - Climatology KW - Asia KW - Arctic KW - Winter climates KW - Teleconnections KW - Temperature changes KW - Temperature effects KW - Cold surges KW - Siberian High KW - Arctic Oscillation KW - Climates KW - Surges KW - Temperature KW - Atmospheric circulation KW - Ecosystem disturbance KW - PN, Arctic KW - Interannual variability KW - Seasonal temperatures KW - Temperature variability KW - Monsoons KW - AQ 00001:Water Resources and Supplies KW - Q2 09242:Observations and measurements at sea KW - O 2090:Instruments/Methods KW - SW 0810:General KW - M2 551.5:General (551.5) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1780530265?accountid=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=Theoretical+and+Applied+Climatology&rft.atitle=Comparison+of+the+impact+of+the+Arctic+Oscillation+and+Eurasian+teleconnection+on+interannual+variation+in+East+Asian+winter+temperatures+and+monsoon&rft.au=Lim%2C+Young-Kwon%3BKim%2C+Hae-Dong&rft.aulast=Lim&rft.aufirst=Young-Kwon&rft.date=2016-04-01&rft.volume=124&rft.issue=1-2&rft.spage=267&rft.isbn=&rft.btitle=&rft.title=Theoretical+and+Applied+Climatology&rft.issn=0177798X&rft_id=info:doi/10.1007%2Fs00704-015-1418-x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-04-01 N1 - Number of references - 37 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Temperature effects; Surges; Climate change; Climatology; Ecosystem disturbance; Winter; Teleconnections; Monsoons; Temperature changes; Cold surges; Siberian High; Arctic Oscillation; Atmospheric circulation; Winter temperatures; Interannual variability; Applied climatology; Seasonal temperatures; Seasonal variability; Temperature variability; Winter climates; Regression Analysis; Variability; Climates; Temperature; Arctic; PN, Arctic; Asia DO - http://dx.doi.org/10.1007/s00704-015-1418-x ER - TY - JOUR T1 - Seasonal evaluation of evapotranspiration fluxes from MODIS satellite and mesoscale model downscaled global reanalysis datasets AN - 1780522846; PQ0002860287 AB - Reference evapotranspiration (ETo) is an important variable in hydrological modeling, which is not always available, especially for ungauged catchments. Satellite data, such as those available from the MODerate Resolution Imaging Spectroradiometer (MODIS), and global datasets via the European Centre for Medium Range Weather Forecasts (ECMWF) reanalysis (ERA) interim and National Centers for Environmental Prediction (NCEP) reanalysis are important sources of information for ETo. This study explored the seasonal performances of MODIS (MOD16) and Weather Research and Forecasting (WRF) model downscaled global reanalysis datasets, such as ERA interim and NCEP-derived ETo, against ground-based datasets. Overall, on the basis of the statistical metrics computed, ETo derived from ERA interim and MODIS were more accurate in comparison to the estimates from NCEP for all the seasons. The pooled datasets also revealed a similar performance to the seasonal assessment with higher agreement for the ERA interim (r=0.96, RMSE=2.76 mm/8 days; bias=0.24 mm/8 days), followed by MODIS (r=0.95, RMSE=7.66 mm/8 days; bias=-7.17 mm/8 days) and NCEP (r=0.76, RMSE=11.81 mm/8 days; bias=-10.20 mm/8 days). The only limitation with downscaling ERA interim reanalysis datasets using WRF is that it is time-consuming in contrast to the readily available MODIS operational product for use in mesoscale studies and practical applications. JF - Theoretical and Applied Climatology AU - Srivastava, Prashant K AU - Han, Dawei AU - Islam, Tanvir AU - Petropoulos, George P AU - Gupta, Manika AU - Dai, Qiang AD - Hydrological Sciences, NASA Goddard Space Flight Center, Greenbelt, MD, 20771, USA, prashant.k.srivastava@nasa.gov Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 461 EP - 473 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 124 IS - 1-2 SN - 0177-798X, 0177-798X KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts; Oceanic Abstracts; Meteorological & Geoastrophysical Abstracts KW - Remote Sensing KW - Prediction KW - Catchment area KW - Remote sensing KW - Data reanalysis KW - Evaluation KW - Applied climatology KW - Hydrologic Models KW - Assessments KW - Catchment basins KW - European Centre for Medium-Range Weather Forecasts KW - MODIS (Moderate Resolution Imaging Spectrometer) KW - Seasonal variability KW - Climatology KW - Weather forecasting KW - Modelling KW - Weather KW - Satellite Technology KW - Hydrologic analysis KW - Evapotranspiration KW - Imaging techniques KW - Satellite sensing KW - Satellite data KW - Mesoscale models KW - Statistical forecasting KW - AQ 00001:Water Resources and Supplies KW - SW 0850:Lakes KW - M2 556:General (556) KW - O 4080:Pollution - Control and Prevention KW - Q2 09105:Research programmes and expeditions UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1780522846?accountid=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=Theoretical+and+Applied+Climatology&rft.atitle=Seasonal+evaluation+of+evapotranspiration+fluxes+from+MODIS+satellite+and+mesoscale+model+downscaled+global+reanalysis+datasets&rft.au=Srivastava%2C+Prashant+K%3BHan%2C+Dawei%3BIslam%2C+Tanvir%3BPetropoulos%2C+George+P%3BGupta%2C+Manika%3BDai%2C+Qiang&rft.aulast=Srivastava&rft.aufirst=Prashant&rft.date=2016-04-01&rft.volume=124&rft.issue=1-2&rft.spage=461&rft.isbn=&rft.btitle=&rft.title=Theoretical+and+Applied+Climatology&rft.issn=0177798X&rft_id=info:doi/10.1007%2Fs00704-015-1430-1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-04-01 N1 - Number of references - 54 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Catchment area; Prediction; Satellite sensing; Remote sensing; Climatology; Evapotranspiration; Weather forecasting; Imaging techniques; Modelling; Applied climatology; Satellite data; Hydrologic analysis; Catchment basins; European Centre for Medium-Range Weather Forecasts; Mesoscale models; Seasonal variability; MODIS (Moderate Resolution Imaging Spectrometer); Statistical forecasting; Data reanalysis; Evaluation; Remote Sensing; Satellite Technology; Weather; Hydrologic Models; Assessments DO - http://dx.doi.org/10.1007/s00704-015-1430-1 ER - TY - JOUR T1 - The geology of Pluto and Charon through the eyes of New Horizons AN - 1800391275; 2016-056617 AB - NASA's New Horizons spacecraft has revealed the complex geology of Pluto and Charon. Pluto's encounter hemisphere shows ongoing surface geological activity centered on a vast basin containing a thick layer of volatile ices that appears to be involved in convection and advection, with a crater retention age no greater than approximately 10 million years. Surrounding terrains show active glacial flow, apparent transport and rotation of large buoyant water-ice crustal blocks, and pitting, the latter likely caused by sublimation erosion and/or collapse. More enigmatic features include tall mounds with central depressions that are conceivably cryovolcanic and ridges with complex bladed textures. Pluto also has ancient cratered terrains up to approximately 4 billion years old that are extensionally faulted and extensively mantled and perhaps eroded by glacial or other processes. Charon does not appear to be currently active, but experienced major extensional tectonism and resurfacing (probably cryovolcanic) nearly 4 billion years ago. Impact crater populations on Pluto and Charon are not consistent with the steepest impactor size-frequency distributions proposed for the Kuiper belt. JF - Science AU - Moore, Jeffrey M AU - McKinnon, William B AU - Spencer, John R AU - Howard, Alan D AU - Schenk, Paul M AU - Beyer, Ross A AU - Nimmo, Francis AU - Singer, Kelsi N AU - Umurhan, Orkan M AU - White, Oliver L AU - Stern, S Alan AU - Ennico, Kimberly AU - Olkin, Cathy B AU - Weaver, Harold A AU - Young, Leslie A AU - Binzel, Richard P AU - Buie, Marc W AU - Buratti, Bonnie J AU - Cheng, Andrew F AU - Cruikshank, Dale P AU - Grundy, Will M AU - Linscott, Ivan R AU - Reitsema, Harold J AU - Reuter, Dennis C AU - Showalter, Mark R AU - Bray, Veronica J AU - Chavez, Carrie L AU - Howett, Carly J A AU - Lauer, Tod R AU - Lisse, Carey M AU - Parker, Alex Harrison AU - Porter, S B AU - Robbins, Stuart J AU - Runyon, Kirby AU - Stryk, Ted AU - Throop, Henry B AU - Tsang, Constantine C C AU - Verbiscer, Anne J AU - Zangari, Amanda M AU - Chaikin, Andrew L AU - Wilhelms, Don E Y1 - 2016/03/18/ PY - 2016 DA - 2016 Mar 18 SP - 1284 EP - 1293 PB - American Association for the Advancement of Science, Washington, DC VL - 351 IS - 6279 SN - 0036-8075, 0036-8075 KW - cryovolcanism KW - tectonic elements KW - petrology KW - impact features KW - textures KW - glaciers KW - digital terrain models KW - basin analysis KW - extension tectonics KW - dwarf planets KW - volatiles KW - volcanic features KW - ice KW - surface features KW - Charon KW - impact craters KW - tectonics KW - Pluto KW - faults KW - New Horizons Mission KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800391275?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+geology+of+Pluto+and+Charon+through+the+eyes+of+New+Horizons&rft.au=Moore%2C+Jeffrey+M%3BMcKinnon%2C+William+B%3BSpencer%2C+John+R%3BHoward%2C+Alan+D%3BSchenk%2C+Paul+M%3BBeyer%2C+Ross+A%3BNimmo%2C+Francis%3BSinger%2C+Kelsi+N%3BUmurhan%2C+Orkan+M%3BWhite%2C+Oliver+L%3BStern%2C+S+Alan%3BEnnico%2C+Kimberly%3BOlkin%2C+Cathy+B%3BWeaver%2C+Harold+A%3BYoung%2C+Leslie+A%3BBinzel%2C+Richard+P%3BBuie%2C+Marc+W%3BBuratti%2C+Bonnie+J%3BCheng%2C+Andrew+F%3BCruikshank%2C+Dale+P%3BGrundy%2C+Will+M%3BLinscott%2C+Ivan+R%3BReitsema%2C+Harold+J%3BReuter%2C+Dennis+C%3BShowalter%2C+Mark+R%3BBray%2C+Veronica+J%3BChavez%2C+Carrie+L%3BHowett%2C+Carly+J+A%3BLauer%2C+Tod+R%3BLisse%2C+Carey+M%3BParker%2C+Alex+Harrison%3BPorter%2C+S+B%3BRobbins%2C+Stuart+J%3BRunyon%2C+Kirby%3BStryk%2C+Ted%3BThroop%2C+Henry+B%3BTsang%2C+Constantine+C+C%3BVerbiscer%2C+Anne+J%3BZangari%2C+Amanda+M%3BChaikin%2C+Andrew+L%3BWilhelms%2C+Don+E&rft.aulast=Moore&rft.aufirst=Jeffrey&rft.date=2016-03-18&rft.volume=351&rft.issue=6279&rft.spage=1284&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.aad7055 L2 - http://www.sciencemag.org/magazine LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 23 N1 - PubXState - DC N1 - Document feature - illus. incl. geol. sketch maps N1 - Last updated - 2016-06-30 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - basin analysis; Charon; cryovolcanism; digital terrain models; dwarf planets; extension tectonics; faults; glaciers; ice; impact craters; impact features; New Horizons Mission; petrology; Pluto; surface features; tectonic elements; tectonics; textures; volatiles; volcanic features DO - http://dx.doi.org/10.1126/science.aad7055 ER - TY - JOUR T1 - Surface compositions across Pluto and Charon AN - 1800391170; 2016-056618 AB - The New Horizons spacecraft mapped colors and infrared spectra across the encounter hemispheres of Pluto and Charon. The volatile methane, carbon monoxide, and nitrogen ices that dominate Pluto's surface have complicated spatial distributions resulting from sublimation, condensation, and glacial flow acting over seasonal and geological time scales. Pluto's water ice "bedrock" was also mapped, with isolated outcrops occurring in a variety of settings. Pluto's surface exhibits complex regional color diversity associated with its distinct provinces. Charon's color pattern is simpler, dominated by neutral low latitudes and a reddish northern polar region. Charon's near-infrared spectra reveal highly localized areas with strong ammonia absorption tied to small craters with relatively fresh-appearing impact ejecta. JF - Science AU - Grundy, Will M AU - Binzel, Richard P AU - Buratti, Bonnie J AU - Cook, J C AU - Cruikshank, Dale P AU - Dalle Ore, C M AU - Earle, A M AU - Ennico, Kimberly AU - Howett, Carly J A AU - Lunsford, A W AU - Olkin, Cathy B AU - Parker, Alex Harrison AU - Philippe, S AU - Protopapa, S AU - Quirico, E AU - Reuter, Dennis C AU - Schmitt, B AU - Singer, Kelsi N AU - Verbiscer, Anne J AU - Beyer, Ross A AU - Buie, Marc W AU - Cheng, Andrew F AU - Jennings, D E AU - Linscott, Ivan R AU - Parker, J W AU - Schenk, Paul M AU - Spencer, J R AU - Stansberry, J A AU - Stern, S A AU - Throop, Henry B AU - Tsang, Constantine C C AU - Weaver, Harold A AU - Weigle, G E, II AU - Young, L A Y1 - 2016/03/18/ PY - 2016 DA - 2016 Mar 18 SP - 1283 PB - American Association for the Advancement of Science, Washington, DC VL - 351 IS - 6279 SN - 0036-8075, 0036-8075 KW - imagery KW - methane KW - Kuiper Belt KW - aliphatic hydrocarbons KW - landforms KW - cosmochemistry KW - alkanes KW - dwarf planets KW - nitrogen KW - carbon dioxide KW - organic compounds KW - surface features KW - hydrocarbons KW - Charon KW - geochemistry KW - Pluto KW - New Horizons Mission KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800391170?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Surface+compositions+across+Pluto+and+Charon&rft.au=Grundy%2C+Will+M%3BBinzel%2C+Richard+P%3BBuratti%2C+Bonnie+J%3BCook%2C+J+C%3BCruikshank%2C+Dale+P%3BDalle+Ore%2C+C+M%3BEarle%2C+A+M%3BEnnico%2C+Kimberly%3BHowett%2C+Carly+J+A%3BLunsford%2C+A+W%3BOlkin%2C+Cathy+B%3BParker%2C+Alex+Harrison%3BPhilippe%2C+S%3BProtopapa%2C+S%3BQuirico%2C+E%3BReuter%2C+Dennis+C%3BSchmitt%2C+B%3BSinger%2C+Kelsi+N%3BVerbiscer%2C+Anne+J%3BBeyer%2C+Ross+A%3BBuie%2C+Marc+W%3BCheng%2C+Andrew+F%3BJennings%2C+D+E%3BLinscott%2C+Ivan+R%3BParker%2C+J+W%3BSchenk%2C+Paul+M%3BSpencer%2C+J+R%3BStansberry%2C+J+A%3BStern%2C+S+A%3BThroop%2C+Henry+B%3BTsang%2C+Constantine+C+C%3BWeaver%2C+Harold+A%3BWeigle%2C+G+E%2C+II%3BYoung%2C+L+A&rft.aulast=Grundy&rft.aufirst=Will&rft.date=2016-03-18&rft.volume=351&rft.issue=6279&rft.spage=1283&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.aad9189 L2 - http://www.sciencemag.org/magazine LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2016-06-30 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; carbon dioxide; Charon; cosmochemistry; dwarf planets; geochemistry; hydrocarbons; imagery; Kuiper Belt; landforms; methane; New Horizons Mission; nitrogen; organic compounds; Pluto; surface features DO - http://dx.doi.org/10.1126/science.aad9189 ER - TY - JOUR T1 - Spatiotemporal drought variability in the Mediterranean over the last 900 years AN - 1807506951; 2016-067218 AB - Recent Mediterranean droughts have highlighted concerns that climate change may be contributing to observed drying trends, but natural climate variability in the region is still poorly understood. We analyze 900 years (1100-2012) of Mediterranean drought variability in the Old World Drought Atlas (OWDA), a spatiotemporal tree ring reconstruction of the June-July-August self-calibrating Palmer Drought Severity Index. In the Mediterranean, the OWDA is highly correlated with spring precipitation (April-June), the North Atlantic Oscillation (January-April), the Scandinavian Pattern (January-March), and the East Atlantic Pattern (April-June). Drought variability displays significant east-west coherence across the basin on multidecadal to centennial timescales and north-south antiphasing in the eastern Mediterranean, with a tendency for wet anomalies in the Black Sea region (e.g., Greece, Anatolia, and the Balkans) when coastal Libya, the southern Levant, and the Middle East are dry, possibly related to the North Atlantic Oscillation. Recent droughts are centered in the western Mediterranean, Greece, and the Levant. Events of similar magnitude in the western Mediterranean and Greece occur in the OWDA, but the recent 15 year drought in the Levant (1998-2012) is the driest in the record. Estimating uncertainties using a resampling approach, we conclude that there is an 89% likelihood that this drought is drier than any comparable period of the last 900 years and a 98% likelihood that it is drier than the last 500 years. These results confirm the exceptional nature of this drought relative to natural variability in recent centuries, consistent with studies that have found evidence for anthropogenically forced drying in the region. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Atmospheres AU - Cook, Benjamin I AU - Anchukaitis, Kevin J AU - Touchan, Ramzi AU - Meko, David M AU - Cook, Edward R Y1 - 2016/03/16/ PY - 2016 DA - 2016 Mar 16 SP - 2060 EP - 2074 PB - Blackwell Wiley for American Geophysical Union, Washington, DC VL - 121 IS - 5 SN - 2169-897X, 2169-897X KW - North Atlantic Oscillation KW - Quaternary KW - time series analysis KW - North Africa KW - paleohydrology KW - statistical analysis KW - Europe KW - Palmer drought severity index KW - paleoclimatology KW - Holocene KW - climate change KW - Southern Europe KW - drought KW - Cenozoic KW - spatial variations KW - tree rings KW - Africa KW - temporal distribution KW - reconstruction KW - upper Holocene KW - Asia KW - Middle East KW - Mediterranean region KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1807506951?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Spatiotemporal+drought+variability+in+the+Mediterranean+over+the+last+900+years&rft.au=Cook%2C+Benjamin+I%3BAnchukaitis%2C+Kevin+J%3BTouchan%2C+Ramzi%3BMeko%2C+David+M%3BCook%2C+Edward+R&rft.aulast=Cook&rft.aufirst=Benjamin&rft.date=2016-03-16&rft.volume=121&rft.issue=5&rft.spage=2060&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2015JD023929 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-8996 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 85 N1 - PubXState - DC N1 - Document feature - illus. incl. sketch map N1 - Last updated - 2016-11-17 N1 - SubjectsTermNotLitGenreText - Africa; Asia; Cenozoic; climate change; drought; Europe; Holocene; Mediterranean region; Middle East; North Africa; North Atlantic Oscillation; paleoclimatology; paleohydrology; Palmer drought severity index; Quaternary; reconstruction; Southern Europe; spatial variations; statistical analysis; temporal distribution; time series analysis; tree rings; upper Holocene DO - http://dx.doi.org/10.1002/2015JD023929 ER - TY - JOUR T1 - Light and variable (super 37) Cl/ (super 35) Cl ratios in rocks from Gale Crater, Mars; possible signature of perchlorate AN - 1793208429; 2016-047239 AB - Cl isotope ratios measured on HCl thermally evolved from as-yet-unknown phases in sedimentary rocks and sand in Gale Crater provide unexpected insights to the Martian surficial Cl cycle. The seven samples yield delta (super 37) Cl values ranging from -1+ or -25ppm to -51+ or -5ppm. Five analyses from two samples of the Sheepbed mudstone (Yellowknife Bay study area) are analytically indistinguishable with a mean delta (super 37) Cl of -11+ or -7ppm(1sigma ). In contrast, four mudstones/sandstones from the Kimberley and Pahrump study areas also yielded indistinguishable ratios, but with a mean delta (super 37) Cl of -43+ or -6ppm. The Rocknest sand deposit gave a highly uncertain delta (super 37) Cl value of -7+ or -44ppm. These light and highly variable delta (super 37) Cl values are unique among known solar system materials. Two endmember models are offered to account for these observations, and in both, perchlorate, with its extreme ability to fractionate Cl isotopes, is critical. In the first model, SAM is detecting HCl from an oxychlorine compound (e.g., perchlorate) produced from volcanic gas emissions by atmospheric chemical reactions. Similar reactions in Earth's atmosphere may be responsible for the isotopically lightest known Cl outside of this study, in perchlorate from the Atacama Desert. Some of the Gale Crater delta (super 37) Cl values are more negative than those in Atacama perchlorate, but because reaction mechanisms and associated fractionation factors are unknown, it is impossible to assess whether this difference is prohibitive. If the negative delta (super 37) Cl signal is produced in this fashion, the isotopic variability among samples could arise either from variations in the relative size of the reactant chloride and product perchlorate reservoirs, or from variations in the fraction of perchlorate reduced back to chloride after deposition. Such reduction strongly enriches (super 37) Cl in the residual perchlorate. Perchlorate reduction alone offers an alternative endmember model that can explain the observed data if SAM measured HCl derived from chloride. In this model isotopically normal perchlorate produced by an unspecified mechanism is reduced to chloride. Depending on the relative size of the reduced reservoir, the integrated product chloride can vary in isotopic composition from -70ppm in the first increment all the way to the starting composition if the perchlorate is fully reduced. Thus, variable degrees of perchlorate reduction can produce chloride with the appropriate delta (super 37) Cl range. Combination of the two endmember models, in which the perchlorate subject to post-deposition reduction is isotopically negative from atmospheric reactions, is also possible.Determination of the phase hosting the Cl measured by SAM, an oxychlorine compound or chloride, is critical for selecting between these models, and for developing implications of the results for the Mars surficial Cl cycle. At present it is not possible to conclusively establish which phase is responsible (possibly both), but limited evidence favors the conclusion that the measured Cl derives mostly from an oxychlorine compound. JF - Earth and Planetary Science Letters AU - Farley, K A AU - Martin, P AU - Archer, P D, Jr AU - Atreya, S K AU - Conrad, P G AU - Eigenbrode, J L AU - Fairen, A G AU - Franz, H B AU - Freissinet, C AU - Glavin, D P AU - Mahaffy, P R AU - Malespin, C AU - Ming, D W AU - Navarro-Gonzalez, R AU - Sutter, B Y1 - 2016/03/15/ PY - 2016 DA - 2016 Mar 15 SP - 14 EP - 24 PB - Elsevier, Amsterdam VL - 438 SN - 0012-821X, 0012-821X KW - isotopes KW - Kimberley KW - halogens KW - Mars KW - stable isotopes KW - Gale Crater KW - sedimentary rocks KW - chemical reactions KW - Curiosity Rover KW - Yellowknife Bay KW - chlorine KW - isotope ratios KW - oxychlorine KW - Sheepbed Mudstone KW - Rocknest KW - perchlorate KW - Pahrump Hills KW - geochemical cycle KW - terrestrial planets KW - planets KW - Sample Analysis at Mars instrument KW - Cl-37/Cl-35 KW - Mars Science Laboratory KW - hydrogen chloride KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1793208429?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Light+and+variable+%28super+37%29+Cl%2F+%28super+35%29+Cl+ratios+in+rocks+from+Gale+Crater%2C+Mars%3B+possible+signature+of+perchlorate&rft.au=Farley%2C+K+A%3BMartin%2C+P%3BArcher%2C+P+D%2C+Jr%3BAtreya%2C+S+K%3BConrad%2C+P+G%3BEigenbrode%2C+J+L%3BFairen%2C+A+G%3BFranz%2C+H+B%3BFreissinet%2C+C%3BGlavin%2C+D+P%3BMahaffy%2C+P+R%3BMalespin%2C+C%3BMing%2C+D+W%3BNavarro-Gonzalez%2C+R%3BSutter%2C+B&rft.aulast=Farley&rft.aufirst=K&rft.date=2016-03-15&rft.volume=438&rft.issue=&rft.spage=14&rft.isbn=&rft.btitle=&rft.title=Earth+and+Planetary+Science+Letters&rft.issn=0012821X&rft_id=info:doi/10.1016%2Fj.epsl.2015.12.013 L2 - http://www.sciencedirect.com/science/journal/0012821X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 56 N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-06-02 N1 - CODEN - EPSLA2 N1 - SubjectsTermNotLitGenreText - chemical reactions; chlorine; Cl-37/Cl-35; Curiosity Rover; Gale Crater; geochemical cycle; halogens; hydrogen chloride; isotope ratios; isotopes; Kimberley; Mars; Mars Science Laboratory; oxychlorine; Pahrump Hills; perchlorate; planets; Rocknest; Sample Analysis at Mars instrument; sedimentary rocks; Sheepbed Mudstone; stable isotopes; terrestrial planets; Yellowknife Bay DO - http://dx.doi.org/10.1016/j.epsl.2015.12.013 ER - TY - JOUR T1 - A 2 km-size asteroid challenging the rubble-pile spin barrier; a case for cohesion AN - 1789754613; 2016-040155 JF - Icarus AU - Polishook, D AU - Moskovitz, N AU - Binzel, R P AU - Burt, B AU - DeMeo, F E AU - Hinkle, M L AU - Lockhart, M AU - Mommert, M AU - Person, M AU - Thirouin, A AU - Thomas, C A AU - Trilling, D AU - Willman, M AU - Aharonson, O Y1 - 2016/03/15/ PY - 2016 DA - 2016 Mar 15 SP - 243 EP - 254 PB - Elsevier, New York, NY VL - 267 SN - 0019-1035, 0019-1035 KW - shear strength KW - density KW - asteroids KW - Moon KW - stability KW - rubble-pile spin KW - rates KW - size KW - photometry KW - Asteroid 2000 GD65 KW - dynamics KW - rotation KW - S-type asteroids KW - regolith KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789754613?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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+2+km-size+asteroid+challenging+the+rubble-pile+spin+barrier%3B+a+case+for+cohesion&rft.au=Polishook%2C+D%3BMoskovitz%2C+N%3BBinzel%2C+R+P%3BBurt%2C+B%3BDeMeo%2C+F+E%3BHinkle%2C+M+L%3BLockhart%2C+M%3BMommert%2C+M%3BPerson%2C+M%3BThirouin%2C+A%3BThomas%2C+C+A%3BTrilling%2C+D%3BWillman%2C+M%3BAharonson%2C+O&rft.aulast=Polishook&rft.aufirst=D&rft.date=2016-03-15&rft.volume=267&rft.issue=&rft.spage=243&rft.isbn=&rft.btitle=&rft.title=Icarus&rft.issn=00191035&rft_id=info:doi/10.1016%2Fj.icarus.2015.12.031 L2 - http://www.sciencedirect.com/science/journal/00191035 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 52 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2016-08-18 N1 - CODEN - ICRSA5 N1 - SubjectsTermNotLitGenreText - Asteroid 2000 GD65; asteroids; density; dynamics; Moon; photometry; rates; regolith; rotation; rubble-pile spin; S-type asteroids; shear strength; size; stability DO - http://dx.doi.org/10.1016/j.icarus.2015.12.031 ER - TY - JOUR T1 - On Measurements of the Tide at Churchill, Hudson Bay AN - 1790931144; PQ0003049009 AB - Since the late 1990s the semi-diurnal tide at Churchill, on the western shore of Hudson Bay, has been decreasing in amplitude, with M sub(2) amplitudes falling from approximately 154cm in 1998 to 146cm in 2012 and 142cm in 2014. There has been a corresponding small increase in phase lag. Mean low water, decreasing throughout most of the twentieth century, has levelled off. Although the tidal changes could reflect merely a malfunctioning tide gauge, the fact that there are no other measurements in the region and the possibility that the tide is revealing important environmental changes calls for serious investigation. Satellite altimeter measurements of the tide in Hudson Bay are complicated by the seasonal ice cover; at most locations less than 40% of satellite passes return valid ocean heights and even those can be impacted by errors from sea ice. Because the combined TOPEX/Poseidon, Jason-1, and Jason-2 time series is more than 23 years long, it is now possible to obtain sufficient data at crossover locations near Churchill to search for tidal changes. The satellites sense no changes in M sub(2) that are comparable to the changes seen at the Churchill gauge. The changes appear to be localized to the harbour, or to the Churchill River, or to the gauge itself. JF - Atmosphere-Ocean AU - Ray, Richard D AD - NASA Goddard Space Flight Center, Greenbelt, Maryland, United States Y1 - 2016/03/14/ PY - 2016 DA - 2016 Mar 14 SP - 108 EP - 116 PB - Canadian Meteorological and Oceanographic Society, McDonald Building Ottawa, ON, K1N 6N5 Canada VL - 54 IS - 2 SN - 0705-5900, 0705-5900 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts; Oceanic Abstracts KW - Remote Sensing KW - Rivers KW - Marine KW - Satellite Technology KW - Ice Cover KW - PNW, Canada, Hudson Bay KW - Climatic changes KW - Shores KW - Freshwater KW - Time series analysis KW - Tides KW - Satellite sensing KW - Sea ice KW - Canada, Manitoba, Churchill R. KW - Tide gauges KW - Oceans KW - Sea Ice KW - Altimeters KW - Ice cover KW - TOPEX/POSEIDON KW - O 6060:Coastal Zone Resources and Management KW - SW 0810:General KW - M2 551.326:Floating Ice (551.326) KW - Q2 09162:Methods and instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1790931144?accountid=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=Atmosphere-Ocean&rft.atitle=On+Measurements+of+the+Tide+at+Churchill%2C+Hudson+Bay&rft.au=Ray%2C+Richard+D&rft.aulast=Ray&rft.aufirst=Richard&rft.date=2016-03-14&rft.volume=54&rft.issue=2&rft.spage=108&rft.isbn=&rft.btitle=&rft.title=Atmosphere-Ocean&rft.issn=07055900&rft_id=info:doi/10.1080%2F07055900.2016.1139540 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Rivers; Satellite sensing; Tide gauges; Climatic changes; Altimeters; Ice cover; Sea ice; Time series analysis; TOPEX/POSEIDON; Remote Sensing; Satellite Technology; Ice Cover; Oceans; Sea Ice; Shores; Tides; Canada, Manitoba, Churchill R.; PNW, Canada, Hudson Bay; Marine; Freshwater DO - http://dx.doi.org/10.1080/07055900.2016.1139540 ER - TY - JOUR T1 - Automatic boosted flood mapping from satellite data AN - 1790935857; PQ0003047227 AB - Numerous algorithms have been proposed to map floods from Moderate Resolution Imaging Spectroradiometer (MODIS) imagery. However, most require human input to succeed, either to specify a threshold value or to manually annotate training data. We introduce a new algorithm based on Adaboost which effectively maps floods without any human input, allowing for a truly rapid and automatic response. The Adaboost algorithm combines multiple thresholds to achieve results comparable to state-of-the-art algorithms which do require human input. We evaluate Adaboost, as well as numerous previously proposed flood mapping algorithms, on multiple MODIS flood images, as well as on hundreds of non-flood MODIS lake images, demonstrating its effectiveness across a wide variety of conditions. JF - International Journal of Remote Sensing AU - Coltin, Brian AU - McMichael, Scott AU - Smith, Trey AU - Fong, Terrence AD - Intelligent Robotics Group, NASA Ames, Moffett Field, CA, USA Y1 - 2016/03/03/ PY - 2016 DA - 2016 Mar 03 SP - 993 EP - 1015 PB - Taylor & Francis Group Ltd., 2 Park Square Oxford OX14 4RN United Kingdom VL - 37 IS - 5 SN - 0143-1161, 0143-1161 KW - Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Remote Sensing KW - Algorithms KW - Remote sensing KW - Automation KW - Maps KW - Lakes KW - Floods KW - MODIS (Moderate Resolution Imaging Spectrometer) KW - Mapping KW - Hydrologic Data KW - Satellite Technology KW - Imaging techniques KW - Automated cartography KW - Satellite sensing KW - Satellite data KW - AQ 00001:Water Resources and Supplies KW - Q2 09393:Remote geosensing KW - SW 7010:Education - extramural KW - M2 551.5:General (551.5) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1790935857?accountid=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=International+Journal+of+Remote+Sensing&rft.atitle=Automatic+boosted+flood+mapping+from+satellite+data&rft.au=Coltin%2C+Brian%3BMcMichael%2C+Scott%3BSmith%2C+Trey%3BFong%2C+Terrence&rft.aulast=Coltin&rft.aufirst=Brian&rft.date=2016-03-03&rft.volume=37&rft.issue=5&rft.spage=993&rft.isbn=&rft.btitle=&rft.title=International+Journal+of+Remote+Sensing&rft.issn=01431161&rft_id=info:doi/10.1080%2F01431161.2016.1145366 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Satellite sensing; Automated cartography; Floods; Remote sensing; Mapping; Imaging techniques; Satellite data; Algorithms; MODIS (Moderate Resolution Imaging Spectrometer); Remote Sensing; Satellite Technology; Lakes; Automation; Maps; Hydrologic Data DO - http://dx.doi.org/10.1080/01431161.2016.1145366 ER - TY - JOUR T1 - Health-related quality of life in transfusion-dependent patients with myelodysplastic syndromes: a prospective study to assess the impact of iron chelation therapy AN - 1860823309 AB - Objective The primary objective of this study was to evaluate the health-related quality of life (HRQOL) in lower-risk, transfusion-dependent patients with myelodysplastic syndromes (MDS) treated with deferasirox. A secondary objective was to investigate the relationship between HRQOL, serum ferritin levels and transfusion dependency. Patients and methods This was a prospective multicentre study enrolling 159 patients, of whom 152 received at least one dose of deferasirox. HRQOL was assessed with the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire-Core 30 (EORTC QLQ-C30) at baseline and then at 3, 6, 9 and 12 months. Primary analysis was performed estimating mean HRQOL scores over time by a linear mixed model on selected scales. Results The median age of treated patients was 72 years (range 24-87 years). No statistically significant changes over time were found in mean scores for global health status/quality of life (p=0.564), physical functioning (p=0.409) and fatigue (p=0.471) scales. Also, no significant changes were found for constipation (p=0.292), diarrhoea (p=0.815) and nausea and vomiting (p=0.643). Serum ferritin levels were not associated with HRQOL outcomes. A higher patient-reported baseline pain severity was an independent predictive factor of an earlier achievement of transfusion independence with a HR of 1.032 (99% CI 1.004 to 1.060; p=0.003). Conclusions HRQOL of transfusion-dependent patients with MDS receiving deferasirox therapy remains stable over time. HRQOL assessment might also provide important predictive information on treatment outcomes. Trial registration number NCT00469560. JF - BMJ Supportive & Palliative Care AU - Efficace, Fabio AU - Santini, Valeria AU - La Nasa, Giorgio AU - Cottone, Francesco AU - Finelli, Carlo AU - Borin, Lorenza AU - Quaresmini, Giulia AU - Di Tucci, Anna Angela AU - Volpe, Antonio AU - Cilloni, Daniela AU - Quarta, Giovanni AU - Sanpaolo, Grazia AU - Rivellini, Flavia AU - Salvi, Flavia AU - Molteni, Alfredo AU - Voso, Maria Teresa AU - Alimena, Giuliana AU - Fenu, Susanna AU - Mandelli, Franco AU - Angelucci, Emanuele Y1 - 2016/03// PY - 2016 DA - Mar 2016 SP - 80 CY - London PB - BMJ Publishing Group LTD VL - 6 IS - 1 SN - 2045435X KW - Medical Sciences KW - Chelation Therapy KW - Quality of life KW - Myelodysplastic Syndromes KW - Symptom Burden KW - Transfusions KW - Studies KW - Hemoglobin KW - Responsible persons KW - Pain KW - Anemia KW - Hematology KW - Iron KW - Leukemia KW - Chelation therapy KW - Medical prognosis KW - Patients KW - Multivariate analysis KW - Constipation KW - Laboratories KW - Questionnaires UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1860823309?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apsychology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=BMJ+Supportive+%26+Palliative+Care&rft.atitle=Health-related+quality+of+life+in+transfusion-dependent+patients+with+myelodysplastic+syndromes%3A+a+prospective+study+to+assess+the+impact+of+iron+chelation+therapy&rft.au=Efficace%2C+Fabio%3BSantini%2C+Valeria%3BLa+Nasa%2C+Giorgio%3BCottone%2C+Francesco%3BFinelli%2C+Carlo%3BBorin%2C+Lorenza%3BQuaresmini%2C+Giulia%3BDi+Tucci%2C+Anna+Angela%3BVolpe%2C+Antonio%3BCilloni%2C+Daniela%3BQuarta%2C+Giovanni%3BSanpaolo%2C+Grazia%3BRivellini%2C+Flavia%3BSalvi%2C+Flavia%3BMolteni%2C+Alfredo%3BVoso%2C+Maria+Teresa%3BAlimena%2C+Giuliana%3BFenu%2C+Susanna%3BMandelli%2C+Franco%3BAngelucci%2C+Emanuele&rft.aulast=Efficace&rft.aufirst=Fabio&rft.date=2016-03-01&rft.volume=6&rft.issue=1&rft.spage=80&rft.isbn=&rft.btitle=&rft.title=BMJ+Supportive+%26+Palliative+Care&rft.issn=2045435X&rft_id=info:doi/10.1136%2Fbmjspcare-2014-000726 LA - English DB - ProQuest Central N1 - Copyright - Copyright: 2016 Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/ N1 - Last updated - 2017-02-07 DO - http://dx.doi.org/10.1136/bmjspcare-2014-000726 ER - TY - JOUR T1 - Carbon and sulfur isotopic signatures of ancient life and environment at the microbial scale; Neoarchean shales and carbonates AN - 1832682902; 769335-2 AB - An approach to coordinated, spatially resolved, in situ carbon isotope analysis of organic matter and carbonate minerals, and sulfur three- and four-isotope analysis of pyrite with an unprecedented combination of spatial resolution, precision, and accuracy is described. Organic matter and pyrite from eleven rock samples of Neoarchean drill core express nearly the entire range of delta (super 13) C, delta (super 34) S, Delta (super 33) S, and Delta (super 36) S known from the geologic record, commonly in correlation with morphology, mineralogy, and elemental composition. A new analytical approach (including a set of organic calibration standards) to account for a strong correlation between H/C and instrumental bias in SIMS delta (super 13) C measurement of organic matter is identified. Small (2-3 mu m) organic domains in carbonate matrices are analyzed with sub-permil accuracy and precision. Separate 20- to 50-mu m domains of kerogen in a single nearly equal 0.5 cm (super 3) sample of the nearly equal 2.7 Ga Tumbiana Formation have delta (super 13) C = -52.3 + or - 0.1 ppm and -34.4 + or - 0.1 ppm, likely preserving distinct signatures of methanotrophy and photoautotrophy. Pyrobitumen in the nearly equal 2.6 Ga Jeerinah Formation and the nearly equal 2.5 Ga Mount McRae Shale is systematically (super 13) C-enriched relative to co-occurring kerogen, and associations with uraniferous mineral grains suggest radiolytic alteration. A large range in sulfur isotopic compositions (including higher Delta (super 33) S and more extreme spatial gradients in Delta (super 33) S and Delta (super 36) S than any previously reported) are observed in correlation with morphology and associated mineralogy. Changing systematics of delta (super 34) S, Delta (super 33) S, and Delta (super 36) S, previously investigated at the millimeter to centimeter scale using bulk analysis, are shown to occur at the micrometer scale of individual pyrite grains. These results support the emerging view that the dampened signature of mass-independent sulfur isotope fractionation (S-MIF) associated with the Mesoarchean continued into the early Neoarchean, and that the connections between methane and sulfur metabolism affected the production and preservation of S-MIF during the first half of the planet's history. Abstract Copyright (2010), John Wiley & Sons, Ltd. JF - Geobiology AU - Williford, K H AU - Ushikubo, T AU - Lepot, K AU - Kitajima, K AU - Hallmann, C AU - Spicuzza, M J AU - Kozdon, R AU - Eigenbrode, J L AU - Summons, R E AU - Valley, J W Y1 - 2016/03// PY - 2016 DA - March 2016 SP - 105 EP - 128 PB - Wiley, Oxford VL - 14 IS - 2 SN - 1472-4677, 1472-4677 KW - Pilbara Craton KW - isotopes KW - Western Australia KW - mass spectra KW - Jeerinah Formation KW - Carawine Dolomite KW - stable isotopes KW - Mount McRae Shale KW - black shale KW - sedimentary rocks KW - Wittenoom Formation KW - carbon KW - Australia KW - Archean KW - spectra KW - organic carbon KW - chemical composition KW - Hamersley Basin KW - Precambrian KW - Australasia KW - secondary-ion mass spectra KW - isotope ratios KW - Marra Mamba Formation KW - C-13/C-12 KW - Mount Bruce Supergroup KW - organic compounds KW - S-34/S-32 KW - sulfur KW - petrography KW - S-33/S-32 KW - clastic rocks KW - carbonates KW - Tumbiana Formation KW - Neoarchean KW - 06A:Sedimentary petrology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832682902?accountid=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=Geobiology&rft.atitle=Carbon+and+sulfur+isotopic+signatures+of+ancient+life+and+environment+at+the+microbial+scale%3B+Neoarchean+shales+and+carbonates&rft.au=Williford%2C+K+H%3BUshikubo%2C+T%3BLepot%2C+K%3BKitajima%2C+K%3BHallmann%2C+C%3BSpicuzza%2C+M+J%3BKozdon%2C+R%3BEigenbrode%2C+J+L%3BSummons%2C+R+E%3BValley%2C+J+W&rft.aulast=Williford&rft.aufirst=K&rft.date=2016-03-01&rft.volume=14&rft.issue=2&rft.spage=105&rft.isbn=&rft.btitle=&rft.title=Geobiology&rft.issn=14724677&rft_id=info:doi/10.1111%2Fgbi.12163 L2 - http://www.blackwellpublishing.com/journal.asp?ref=1472-4677 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 - 94 N1 - Document feature - illus. incl. 4 tables N1 - SuppNotes - NSF grants EAR-1053466 and EAR-1355590 N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - Archean; Australasia; Australia; black shale; C-13/C-12; Carawine Dolomite; carbon; carbonates; chemical composition; clastic rocks; Hamersley Basin; isotope ratios; isotopes; Jeerinah Formation; Marra Mamba Formation; mass spectra; Mount Bruce Supergroup; Mount McRae Shale; Neoarchean; organic carbon; organic compounds; petrography; Pilbara Craton; Precambrian; S-33/S-32; S-34/S-32; secondary-ion mass spectra; sedimentary rocks; spectra; stable isotopes; sulfur; Tumbiana Formation; Western Australia; Wittenoom Formation DO - http://dx.doi.org/10.1111/gbi.12163 ER - TY - JOUR T1 - Groundwater Storage Changes: Present Status from GRACE Observations AN - 1832594248; 773448-10 AB - Satellite gravity measurements from the Gravity Recovery and Climate Experiment (GRACE) provide quantitative measurement of terrestrial water storage (TWS) changes with unprecedented accuracy. Combining GRACE-observed TWS changes and independent estimates of water change in soil and snow and surface reservoirs offers a means for estimating groundwater storage change. Since its launch in March 2002, GRACE time-variable gravity data have been successfully used to quantify long-term groundwater storage changes in different regions over the world, including northwest India, the High Plains Aquifer and the Central Valley in the USA, the North China Plain, Middle East, and southern Murray-Darling Basin in Australia, where groundwater storage has been significantly depleted in recent years (or decades). It is difficult to rely on in situ groundwater measurements for accurate quantification of large, regional-scale groundwater storage changes, especially at long timescales due to inadequate spatial and temporal coverage of in situ data and uncertainties in storage coefficients. The now nearly 13 years of GRACE gravity data provide a successful and unique complementary tool for monitoring and measuring groundwater changes on a global and regional basis. Despite the successful applications of GRACE in studying global groundwater storage change, there are still some major challenges limiting the application and interpretation of GRACE data. In this paper, we present an overview of GRACE applications in groundwater studies and discuss if and how the main challenges to using GRACE data can be addressed. Copyright 2015 Springer Science+Business Media Dordrecht JF - Surveys in Geophysics AU - Chen, Jianli AU - Famigliett, James S AU - Scanlon, Bridget R AU - Rodell, Matthew Y1 - 2016/03// PY - 2016 DA - March 2016 SP - 397 EP - 417 PB - Springer, Dordrecht VL - 37 IS - 2 SN - 0169-3298, 0169-3298 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832594248?accountid=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=Surveys+in+Geophysics&rft.atitle=Groundwater+Storage+Changes%3A+Present+Status+from+GRACE+Observations&rft.au=Chen%2C+Jianli%3BFamigliett%2C+James+S%3BScanlon%2C+Bridget+R%3BRodell%2C+Matthew&rft.aulast=Chen&rft.aufirst=Jianli&rft.date=2016-03-01&rft.volume=37&rft.issue=2&rft.spage=397&rft.isbn=&rft.btitle=&rft.title=Surveys+in+Geophysics&rft.issn=01693298&rft_id=info:doi/10.1007%2Fs10712-015-9332-4 L2 - http://www.springerlink.com/(xfpu0bn4myxx3njya4gn4s55)/app/home/journal.asp?referrer=parent&backto=linkingpublicationresults,1:103000,1 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 Springer Verlag, Berlin, Federal Republic of Germany N1 - Last updated - 2017-01-24 N1 - CODEN - GPSVAK DO - http://dx.doi.org/10.1007/s10712-015-9332-4 ER - TY - JOUR T1 - Modeling Groundwater Depletion at Regional and Global Scales: Present State and Future Prospects AN - 1832590288; 773448-11 AB - Except for frozen water in ice and glaciers, groundwater is the world's largest distributed store of freshwater and has strategic importance to global food and water security. In this paper, the most recent advances quantifying groundwater depletion (GWD) are comprehensively reviewed. This paper critically evaluates the recently advanced modeling approaches estimating GWD at regional and global scales, and the evidence of feedbacks to the Earth system including sea-level rise associated with GWD. Finally, critical challenges and opportunities in the use of groundwater are identified for the adaption to growing food demand and uncertain climate. Copyright 2015 Springer Science+Business Media Dordrecht JF - Surveys in Geophysics AU - Wada, Yoshihide Y1 - 2016/03// PY - 2016 DA - March 2016 SP - 419 EP - 451 PB - Springer, Dordrecht VL - 37 IS - 2 SN - 0169-3298, 0169-3298 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832590288?accountid=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=Surveys+in+Geophysics&rft.atitle=Modeling+Groundwater+Depletion+at+Regional+and+Global+Scales%3A+Present+State+and+Future+Prospects&rft.au=Wada%2C+Yoshihide&rft.aulast=Wada&rft.aufirst=Yoshihide&rft.date=2016-03-01&rft.volume=37&rft.issue=2&rft.spage=419&rft.isbn=&rft.btitle=&rft.title=Surveys+in+Geophysics&rft.issn=01693298&rft_id=info:doi/10.1007%2Fs10712-015-9347-x L2 - http://www.springerlink.com/(xfpu0bn4myxx3njya4gn4s55)/app/home/journal.asp?referrer=parent&backto=linkingpublicationresults,1:103000,1 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 Springer Verlag, Berlin, Federal Republic of Germany N1 - Last updated - 2017-01-24 N1 - CODEN - GPSVAK DO - http://dx.doi.org/10.1007/s10712-015-9347-x ER - TY - JOUR T1 - Modelling Freshwater Resources at the Global Scale: Challenges and Prospects AN - 1832589092; 773448-3 AB - Quantification of spatially and temporally resolved water flows and water storage variations for all land areas of the globe is required to assess water resources, water scarcity and flood hazards, and to understand the Earth system. This quantification is done with the help of global hydrological models (GHMs). What are the challenges and prospects in the development and application of GHMs? Seven important challenges are presented. (1) Data scarcity makes quantification of human water use difficult even though significant progress has been achieved in the last decade. (2) Uncertainty of meteorological input data strongly affects model outputs. (3) The reaction of vegetation to changing climate and CO (sub 2) concentrations is uncertain and not taken into account in most GHMs that serve to estimate climate change impacts. (4) Reasons for discrepant responses of GHMs to changing climate have yet to be identified. (5) More accurate estimates of monthly time series of water availability and use are needed to provide good indicators of water scarcity. (6) Integration of gradient-based groundwater modelling into GHMs is necessary for a better simulation of groundwater-surface water interactions and capillary rise. (7) Detection and attribution of human interference with freshwater systems by using GHMs are constrained by data of insufficient quality but also GHM uncertainty itself. Regarding prospects for progress, we propose to decrease the uncertainty of GHM output by making better use of in situ and remotely sensed observations of output variables such as river discharge or total water storage variations by multi-criteria validation, calibration or data assimilation. Finally, we present an initiative that works towards the vision of hyperresolution global hydrological modelling where GHM outputs would be provided at a 1-km resolution with reasonable accuracy. Copyright 2016 Springer Science+Business Media Dordrecht and 2015 The Author(s) JF - Surveys in Geophysics AU - Doell, Petra AU - Douville, Herve AU - Guentner, Andreas AU - Mueller Schmied, Hannes AU - Wada, Yoshihide Y1 - 2016/03// PY - 2016 DA - March 2016 SP - 195 EP - 221 PB - Springer, Dordrecht VL - 37 IS - 2 SN - 0169-3298, 0169-3298 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832589092?accountid=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=Surveys+in+Geophysics&rft.atitle=Modelling+Freshwater+Resources+at+the+Global+Scale%3A+Challenges+and+Prospects&rft.au=Doell%2C+Petra%3BDouville%2C+Herve%3BGuentner%2C+Andreas%3BMueller+Schmied%2C+Hannes%3BWada%2C+Yoshihide&rft.aulast=Doell&rft.aufirst=Petra&rft.date=2016-03-01&rft.volume=37&rft.issue=2&rft.spage=195&rft.isbn=&rft.btitle=&rft.title=Surveys+in+Geophysics&rft.issn=01693298&rft_id=info:doi/10.1007%2Fs10712-015-9343-1 L2 - http://www.springerlink.com/(xfpu0bn4myxx3njya4gn4s55)/app/home/journal.asp?referrer=parent&backto=linkingpublicationresults,1:103000,1 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 Springer Verlag, Berlin, Federal Republic of Germany N1 - Last updated - 2017-01-24 N1 - CODEN - GPSVAK DO - http://dx.doi.org/10.1007/s10712-015-9343-1 ER - TY - JOUR T1 - Electron energization and structure of the diffusion region during asymmetric reconnection AN - 1808369385; PQ0002953221 AB - Results from particle-in-cell simulations of reconnection with asymmetric upstream conditions are reported to elucidate electron energization and structure of the electron diffusion region (EDR). Acceleration of unmagnetized electrons results in discrete structures in the distribution functions and supports the intense current and perpendicular heating in the EDR. The accelerated electrons are cyclotron turned by the reconnected magnetic field to produce the outflow jets, and as such, the acceleration by the reconnection electric field is limited, leading to resistivity without particle-particle or particle-wave collisions. A map of electron distributions is constructed, and its spatial evolution is compared with quantities previously proposed to be EDR identifiers to enable effective identifications of the EDR in terrestrial magnetopause reconnection. Key Points * Accelerated unmagnetized electrons support the reconnection current in asymmetric reconnection * Cyclotron turning by the normal magnetic field limits the reconnection current * Accelerated sheath electrons form a prominent signature to identify the electron diffusion region JF - Geophysical Research Letters AU - Chen, Li-Jen AU - Hesse, Michael AU - Wang, Shan AU - Bessho, Naoki AU - Daughton, William AD - NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2016/03// PY - 2016 DA - March 2016 SP - 2405 EP - 2412 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 43 IS - 6 SN - 0094-8276, 0094-8276 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Marine KW - Simulation Analysis KW - Jets KW - Ecological distribution KW - Outflow KW - Electric Fields KW - Acceleration KW - Resistivity KW - Ocean currents KW - Magnetic fields KW - Electric fields KW - Evolution KW - SW 0810:General KW - Q2 09182:Methods and instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808369385?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=Electron+energization+and+structure+of+the+diffusion+region+during+asymmetric+reconnection&rft.au=Chen%2C+Li-Jen%3BHesse%2C+Michael%3BWang%2C+Shan%3BBessho%2C+Naoki%3BDaughton%2C+William&rft.aulast=Chen&rft.aufirst=Li-Jen&rft.date=2016-03-01&rft.volume=43&rft.issue=6&rft.spage=2405&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2016GL068243 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-08-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Ocean currents; Magnetic fields; Electric fields; Ecological distribution; Outflow; Acceleration; Simulation Analysis; Jets; Electric Fields; Evolution; Resistivity; Marine DO - http://dx.doi.org/10.1002/2016GL068243 ER - TY - JOUR T1 - Spectral slopes of the absorption coefficient of colored dissolved and detrital material inverted from UV-visible remote sensing reflectance AN - 1800396564; 2016-058916 AB - The spectral slope of the absorption coefficient of colored dissolved and detrital material (CDM), S (sub cdm) (units: nm (super -1) ), is an important optical parameter for characterizing the absorption spectral shape of CDM. Although highly variable in natural waters, in most remote sensing algorithms, this slope is either kept as a constant or empirically modeled with multiband ocean color in the visible domain. In this study, we explore the potential of semianalytically retrieving S (sub cdm) with added ocean color information in the ultraviolet (UV) range between 360 and 400 nm. Unique features of hyperspectral remote sensing reflectance in the UV-visible wavelengths (360-500 nm) have been observed in various waters across a range of coastal and open ocean environments. Our data and analyses indicate that ocean color in the UV domain is particularly sensitive to the variation of the CDM spectral slope. Here, we used a synthesized dataset to show that adding UV wavelengths to the ocean color measurements will improve the retrieval of S (sub cdm) from remote sensing reflectance considerably, while the spectral band settings of past and current satellite ocean color sensors cannot fully account for the spectral variation of remote sensing reflectance. Results of this effort support the concept to include UV wavelengths in the next generation of satellite ocean color sensors. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Oceans AU - Wei, Jianwei AU - Lee, Zhongping AU - Ondrusek, Michael AU - Mannino, Antonio AU - Tzortziou, Maria AU - Armstrong, Roy Y1 - 2016/03// PY - 2016 DA - March 2016 SP - 1953 EP - 1969 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 121 IS - 3 SN - 2169-9275, 2169-9275 KW - sea water KW - solutes KW - equations KW - satellite methods KW - information management KW - data management KW - absorption KW - physical properties KW - marine sediments KW - optical properties KW - color KW - mathematical methods KW - sediments KW - ultraviolet spectra KW - spectra KW - remote sensing KW - 07:Oceanography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800396564?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Spectral+slopes+of+the+absorption+coefficient+of+colored+dissolved+and+detrital+material+inverted+from+UV-visible+remote+sensing+reflectance&rft.au=Wei%2C+Jianwei%3BLee%2C+Zhongping%3BOndrusek%2C+Michael%3BMannino%2C+Antonio%3BTzortziou%2C+Maria%3BArmstrong%2C+Roy&rft.aulast=Wei&rft.aufirst=Jianwei&rft.date=2016-03-01&rft.volume=121&rft.issue=3&rft.spage=1953&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Oceans&rft.issn=21699275&rft_id=info:doi/10.1002%2F2015JC011415 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 40 N1 - PubXState - DC N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2016-06-30 N1 - SubjectsTermNotLitGenreText - absorption; color; data management; equations; information management; marine sediments; mathematical methods; optical properties; physical properties; remote sensing; satellite methods; sea water; sediments; solutes; spectra; ultraviolet spectra DO - http://dx.doi.org/10.1002/2015JC011415 ER - TY - JOUR T1 - Spectral characterization of acid weathering products on Martian basaltic glass AN - 1800396530; 2016-058719 AB - For the first time, direct infrared spectral analyses of glasses with Martian compositions, altered under controlled conditions, are presented in order to assess surface weathering and regolith development on Mars. Basaltic glasses of Irvine and Backstay composition were synthesized and altered using H (sub 2) SO (sub 4) -HCl acid solutions (pH 0-4). Scanning electron microscopy/energy dispersive spectroscopy, X-ray diffraction, Raman, and infrared spectral measurements were acquired for each reaction product. Infrared spectra were also acquired from previously synthesized and altered glasses with Pathfinder-measured compositions. Acid alteration on particles in the most acidic solutions (pH or = 2; small amounts of sulfates were reworked with unaltered material; there is a prevalence of intermediate-to-high silica glass in Martian starting materials (more resistant to acid alteration); primary or added sulfur were lacking; alteration features are obscured by dust; and/or large-scale, pervasive, acid sulfate weathering of the Martian surface did not occur. These results highlight the need to better understand the spectral properties of altered Martian surface material in order to enhance the interpretation of remote spectra for altered terrains. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Yant, Marcella AU - Rogers, A Deanne AU - Nekvasil, Hanna AU - Zhao, Yu-Yan Sara AU - Bristow, Tom Y1 - 2016/03// PY - 2016 DA - March 2016 SP - 516 EP - 541 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 121 IS - 3 SN - 2169-9097, 2169-9097 KW - volcanic rocks KW - glasses KW - X-ray diffraction data KW - sulfates KW - igneous rocks KW - thermal infrared spectra KW - Mars KW - weathering KW - near-field spectra KW - infrared spectra KW - terrestrial planets KW - pyroclastics KW - planets KW - Raman spectra KW - spectra KW - chemical composition KW - basaltic composition KW - synthetic materials KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800396530?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Planets&rft.atitle=Spectral+characterization+of+acid+weathering+products+on+Martian+basaltic+glass&rft.au=Yant%2C+Marcella%3BRogers%2C+A+Deanne%3BNekvasil%2C+Hanna%3BZhao%2C+Yu-Yan+Sara%3BBristow%2C+Tom&rft.aulast=Yant&rft.aufirst=Marcella&rft.date=2016-03-01&rft.volume=121&rft.issue=3&rft.spage=516&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2F2015JE004969 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9100 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 91 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2016-06-30 N1 - SubjectsTermNotLitGenreText - basaltic composition; chemical composition; glasses; igneous rocks; infrared spectra; Mars; near-field spectra; planets; pyroclastics; Raman spectra; spectra; sulfates; synthetic materials; terrestrial planets; thermal infrared spectra; volcanic rocks; weathering; X-ray diffraction data DO - http://dx.doi.org/10.1002/2015JE004969 ER - TY - JOUR T1 - Potential precursor compounds for chlorohydrocarbons detected in Gale Crater, Mars, by the SAM instrument suite on the Curiosity Rover AN - 1800394759; 2016-058711 AB - The detection of chlorinated organic compounds in near-surface sedimentary rocks by the Sample Analysis at Mars (SAM) instrument suite aboard the Mars Science Laboratory Curiosity rover represents an important step toward characterizing habitable environments on Mars. However, this discovery also raises questions about the identity and source of their precursor compounds and the processes by which they become chlorinated. Here we present the results of analog experiments, conducted under conditions similar to SAM gas chromatography-mass spectrometry analyses, in which we pyrolyzed potential precursor compounds in the presence of various Cl salts and Fe oxides that have been identified in Martian sediments. While chloromethanes could not be unambiguously identified, 1,2-dichloropropane (1,2-DCP), which is one of the chlorinated compounds identified in SAM data, is formed from the chlorination of aliphatic precursors. Additionally, propanol produced more 1,2-DCP than nonfunctionalized aliphatics such as propane or hexanes. Chlorinated benzenes ranging from chlorobenzene to hexachlorobenzene were identified in experiments with benzene carboxylic acids but not with benzene or toluene. Lastly, the distribution of chlorinated benzenes depended on both the substrate species and the nature and concentration of the Cl salt. Ca and Mg perchlorate, both of which release O (sub 2) in addition to Cl (sub 2) and HCl upon pyrolysis, formed less chlorobenzene relative to the sum of all chlorinated benzenes than in experiments with ferric chloride. FeCl (sub 3) , a Lewis acid, catalyzes chlorination but does not aid combustion. Accordingly, both the precursor chemistry and sample mineralogy exert important controls on the distribution of chlorinated organics. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Planets AU - Miller, Kristen E AU - Eigenbrode, Jennifer L AU - Freissinet, Caroline AU - Glavin, Daniel P AU - Kotrc, Benjamin AU - Francois, Pascaline AU - Summons, Roger E Y1 - 2016/03// PY - 2016 DA - March 2016 SP - 296 EP - 308 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 121 IS - 3 SN - 2169-9097, 2169-9097 KW - chlorinated hydrocarbons KW - chromatography KW - propane KW - aliphatic hydrocarbons KW - Mars KW - alkanes KW - benzene KW - Gale Crater KW - terrestrial planets KW - planets KW - gas chromatography KW - Sample Analysis at Mars KW - organic compounds KW - pyrolysis KW - hexane KW - Curiosity Rover KW - sediments KW - Mars Science Laboratory KW - hydrocarbons KW - oxides KW - halogenated hydrocarbons KW - aromatic hydrocarbons KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800394759?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Potential+precursor+compounds+for+chlorohydrocarbons+detected+in+Gale+Crater%2C+Mars%2C+by+the+SAM+instrument+suite+on+the+Curiosity+Rover&rft.au=Miller%2C+Kristen+E%3BEigenbrode%2C+Jennifer+L%3BFreissinet%2C+Caroline%3BGlavin%2C+Daniel+P%3BKotrc%2C+Benjamin%3BFrancois%2C+Pascaline%3BSummons%2C+Roger+E&rft.aulast=Miller&rft.aufirst=Kristen&rft.date=2016-03-01&rft.volume=121&rft.issue=3&rft.spage=296&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Planets&rft.issn=21699097&rft_id=info:doi/10.1002%2F2015JE004939 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9100 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 30 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2016-06-30 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; aromatic hydrocarbons; benzene; chlorinated hydrocarbons; chromatography; Curiosity Rover; Gale Crater; gas chromatography; halogenated hydrocarbons; hexane; hydrocarbons; Mars; Mars Science Laboratory; organic compounds; oxides; planets; propane; pyrolysis; Sample Analysis at Mars; sediments; terrestrial planets DO - http://dx.doi.org/10.1002/2015JE004939 ER - TY - JOUR T1 - Rb-Sr and Sm-Nd isotopic and REE studies of igneous components in the bulk matrix domain of Martian breccia Northwest Africa 7034 AN - 1797543905; 2016-053921 AB - The bulk matrix domain of the Martian breccia NWA 7034 was examined petrographically and isotopically to better understand the provenance and age of the source material that make up the breccia. Both (super 147) Sm- (super 143) Nd and (super 146) Sm- (super 142) Nd age results for mineral separates from the bulk matrix portion of breccia NWA 7034 suggest that various lithological components in the breccia probably formed contemporaneously approximately 4.44 Ga ago. This old age is in excellent agreement with the upper intersection ages (4.35-4.45 Ga) for U-Pb discordia and also concordia defined by zircon and baddeleyite grains in matrix and igneous-textured clasts. Consequently, we confirm an ancient age for the igneous components that make up the NWA 7034 breccia. Substantial disturbance in the Rb-Sr system was detected, and no age significance could be gleaned from our Rb-Sr data. The disturbance to the Rb-Sr system may be due to a thermal event recorded by bulk-rock K-Ar ages of 1.56 Ga and U-Pb ages of phosphates at about 1.35-1.5 Ga, which suggest partial resetting from an unknown thermal event(s), possibly accompanying breccia formation. The NWA 7034 bulk rock is LREE enriched and similar to KREEP-rich lunar rocks, which indicates that the earliest Martian crust was geochemically enriched. This enrichment supports the idea that the crust is one of the enriched geochemical reservoirs on Mars that have been detected in studies of other Martian meteorites. Abstract Copyright Published 2016. This article is a U.S. Government work and is in the public domain in the USA. JF - Meteoritics & Planetary Science AU - Nyquist, Laurence E AU - Shih, Chi-Yu AU - McCubbin, Francis M AU - Santos, Alison R AU - Shearer, Charles K AU - Peng, Zhan X AU - Burger, Paul V AU - Agee, Carl B Y1 - 2016/03// PY - 2016 DA - March 2016 SP - 483 EP - 498 PB - Meteoritical Society, Fayetteville, AR VL - 51 IS - 3 SN - 1086-9379, 1086-9379 KW - silicates KW - Northwest Africa Meteorites KW - stony meteorites KW - ion probe data KW - isotopes KW - Martian meteorites KW - igneous rocks KW - enrichment KW - mass spectra KW - Mars KW - Rb/Sr KW - electron probe data KW - meteorites KW - pyroxene group KW - chronology KW - whole rock KW - NWA 7034 KW - dates KW - absolute age KW - framework silicates KW - spectra KW - rare earths KW - heterogeneity KW - chain silicates KW - plagioclase KW - breccia KW - matrix KW - achondrites KW - terrestrial planets KW - ICP mass spectra KW - provenance KW - planets KW - KREEP KW - Sm/Nd KW - metals KW - feldspar group KW - crust KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1797543905?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Rb-Sr+and+Sm-Nd+isotopic+and+REE+studies+of+igneous+components+in+the+bulk+matrix+domain+of+Martian+breccia+Northwest+Africa+7034&rft.au=Nyquist%2C+Laurence+E%3BShih%2C+Chi-Yu%3BMcCubbin%2C+Francis+M%3BSantos%2C+Alison+R%3BShearer%2C+Charles+K%3BPeng%2C+Zhan+X%3BBurger%2C+Paul+V%3BAgee%2C+Carl+B&rft.aulast=Nyquist&rft.aufirst=Laurence&rft.date=2016-03-01&rft.volume=51&rft.issue=3&rft.spage=483&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12606 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 46 N1 - PubXState - AR N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2016-06-17 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - absolute age; achondrites; breccia; chain silicates; chronology; crust; dates; electron probe data; enrichment; feldspar group; framework silicates; heterogeneity; ICP mass spectra; igneous rocks; ion probe data; isotopes; KREEP; Mars; Martian meteorites; mass spectra; matrix; metals; meteorites; Northwest Africa Meteorites; NWA 7034; plagioclase; planets; provenance; pyroxene group; rare earths; Rb/Sr; silicates; Sm/Nd; spectra; stony meteorites; terrestrial planets; whole rock DO - http://dx.doi.org/10.1111/maps.12606 ER - TY - JOUR T1 - Highly siderophile element abundances in Eoarchean komatiite and basalt protoliths AN - 1797539629; 2016-051330 AB - Plume-derived, Mg-rich, volcanic rocks (komatiites, high-Mg basalts, and their metamorphic equivalents) can record secular changes in the highly siderophile element (HSE) abundances of mantle sources. An apparent secular time-dependent enrichment trend in HSE abundances from Paleoarchean to Paleoproterozoic mantle-derived rocks could represent the protracted homogenization of a Late Veneer chondritic contaminant into the pre-Late Veneer komatiite source. To search for a possible time dependence of a late accretion signature in the Eoarchean mantle, we report new data from rare >3700 Myr-old mafic and ultramafic schists locked in supracrustal belts from the Inukjuak domain (Quebec, Canada) and the Akilia association (West Greenland). Our analysis shows that some of these experienced HSE mobility and/or include a cumulate component (Touboul et al. in Chem Geol 383:63-75, 2014), whereas several of the oldest samples show some of the most depleted HSE abundances measured for rocks of this composition. We consider these new data for the oldest documented rocks of komatiite protolith in light of the Late Veneer hypothesis. Copyright 2016 Springer-Verlag Berlin Heidelberg JF - Contributions to Mineralogy and Petrology AU - Frank, Elizabeth A AU - Maier, Wolfgang D AU - Mojzsis, Stephen J Y1 - 2016/03// PY - 2016 DA - March 2016 EP - Article 29 PB - Springer International, Heidelberg - New York VL - 171 IS - 3 SN - 0010-7999, 0010-7999 KW - volcanic rocks KW - stony meteorites KW - Quebec KW - igneous rocks KW - metamorphic belts KW - West Greenland KW - mass spectra KW - mantle KW - komatiite KW - ultramafic composition KW - platinum group KW - meteorites KW - Greenland KW - metamorphic rocks KW - basalts KW - Archean KW - spectra KW - rare earths KW - chondrites KW - chemical composition KW - Akilia KW - protoliths KW - Precambrian KW - schists KW - Arctic region KW - siderophile elements KW - supracrustals KW - impacts KW - ICP mass spectra KW - Canada KW - metals KW - Eoarchean KW - Inukjuak Domain KW - Eastern Canada KW - 02C:Geochemistry of rocks, soils, and sediments KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1797539629?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Highly+siderophile+element+abundances+in+Eoarchean+komatiite+and+basalt+protoliths&rft.au=Frank%2C+Elizabeth+A%3BMaier%2C+Wolfgang+D%3BMojzsis%2C+Stephen+J&rft.aulast=Frank&rft.aufirst=Elizabeth&rft.date=2016-03-01&rft.volume=171&rft.issue=3&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Contributions+to+Mineralogy+and+Petrology&rft.issn=00107999&rft_id=info:doi/10.1007%2Fs00410-016-1243-y 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 2016, American Geosciences Institute. Reference includes data supplied by Springer Verlag, Berlin, Federal Republic of Germany N1 - Date revised - 2016-01-01 N1 - Number of references - 107 N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2016-06-17 N1 - CODEN - CMPEAP N1 - SubjectsTermNotLitGenreText - Akilia; Archean; Arctic region; basalts; Canada; chemical composition; chondrites; Eastern Canada; Eoarchean; Greenland; ICP mass spectra; igneous rocks; impacts; Inukjuak Domain; komatiite; mantle; mass spectra; metals; metamorphic belts; metamorphic rocks; meteorites; platinum group; Precambrian; protoliths; Quebec; rare earths; schists; siderophile elements; spectra; stony meteorites; supracrustals; ultramafic composition; volcanic rocks; West Greenland DO - http://dx.doi.org/10.1007/s00410-016-1243-y ER - TY - JOUR T1 - Implications of projected climate change for ground water recharge in the Western United States AN - 1793206348; 2016-049504 AB - Existing studies on the impacts of climate change on groundwater recharge are either global or basin/location-specific. The global studies lack the specificity to inform decision making, while the local studies do little to clarify potential changes over large regions (major river basins, states, or groups of states), a scale often important in the development of water policy. An analysis of the potential impact of climate change on groundwater recharge across the western United States (west of 100 degrees longitude) is presented synthesizing existing studies and applying current knowledge of recharge processes and amounts. Eight representative aquifers located across the region were evaluated. For each aquifer published recharge budget components were converted into four standard recharge mechanisms: diffuse, focused, irrigation, and mountain-systems recharge. Future changes in individual recharge mechanisms and total recharge were then estimated for each aquifer. Model-based studies of projected climate-change effects on recharge were available and utilized for half of the aquifers. For the remainder, forecasted changes in temperature and precipitation were logically propagated through each recharge mechanism producing qualitative estimates of direction of changes in recharge only (not magnitude). Several key patterns emerge from the analysis. First, the available estimates indicate average declines of 10-20% in total recharge across the southern aquifers, but with a wide range of uncertainty that includes no change. Second, the northern set of aquifers will likely incur little change to slight increases in total recharge. Third, mountain system recharge is expected to decline across much of the region due to decreased snowpack, with that impact lessening with higher elevation and latitude. Factors contributing the greatest uncertainty in the estimates include: (1) limited studies quantitatively coupling climate projections to recharge estimation methods using detailed, process-based numerical models; (2) a generally poor understanding of hydrologic flowpaths and processes in mountain systems; (3) difficulty predicting the response of focused recharge to potential changes in the frequency and intensity of extreme precipitation events; and (4) unconstrained feedbacks between climate, irrigation practices, and recharge in highly developed aquifer systems. Abstract Copyright (2016) Elsevier, B.V. JF - Journal of Hydrology AU - Meixner, Thomas AU - Manning, Andrew H AU - Stonestrom, David A AU - Allen, Diana M AU - Ajami, Hoori AU - Blasch, Kyle W AU - Brookfield, Andrea E AU - Castro, Christopher L AU - Clark, Jordan F AU - Gochis, David J AU - Flint, Alan L AU - Neff, Kirstin L AU - Niraula, Rewati AU - Rodell, Matthew AU - Scanlon, Bridget R AU - Singha, Kamini AU - Walvoord, Michelle A Y1 - 2016/03// PY - 2016 DA - March 2016 SP - 124 EP - 138 PB - Elsevier, Amsterdam VL - 534 SN - 0022-1694, 0022-1694 KW - United States KW - Sonora Mexico KW - hydrogeology KW - environmental effects KW - climate change KW - relief KW - ground water KW - spatial distribution KW - Spokane Basin KW - Western U.S. KW - Death Valley KW - drainage basins KW - High Plains Aquifer KW - Williston Basin KW - climate KW - processes KW - North America KW - patterns KW - numerical models KW - rainfall KW - statistical analysis KW - prediction KW - aquifers KW - models KW - Central Valley KW - recharge KW - Mexico KW - mathematical methods KW - Columbia Plateau KW - geomorphology KW - water resources KW - Tri-Canyons KW - land use KW - 21:Hydrogeology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1793206348?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Implications+of+projected+climate+change+for+ground+water+recharge+in+the+Western+United+States&rft.au=Meixner%2C+Thomas%3BManning%2C+Andrew+H%3BStonestrom%2C+David+A%3BAllen%2C+Diana+M%3BAjami%2C+Hoori%3BBlasch%2C+Kyle+W%3BBrookfield%2C+Andrea+E%3BCastro%2C+Christopher+L%3BClark%2C+Jordan+F%3BGochis%2C+David+J%3BFlint%2C+Alan+L%3BNeff%2C+Kirstin+L%3BNiraula%2C+Rewati%3BRodell%2C+Matthew%3BScanlon%2C+Bridget+R%3BSingha%2C+Kamini%3BWalvoord%2C+Michelle+A&rft.aulast=Meixner&rft.aufirst=Thomas&rft.date=2016-03-01&rft.volume=534&rft.issue=&rft.spage=124&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology&rft.issn=00221694&rft_id=info:doi/10.1016%2Fj.jhydrol.2015.12.027 L2 - http://www.sciencedirect.com/science/journal/00221694 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 92 N1 - Document feature - illus. incl. 3 tables, sketch maps N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-06-02 N1 - CODEN - JHYDA7 N1 - SubjectsTermNotLitGenreText - aquifers; Central Valley; climate; climate change; Columbia Plateau; Death Valley; drainage basins; environmental effects; geomorphology; ground water; High Plains Aquifer; hydrogeology; land use; mathematical methods; Mexico; models; North America; numerical models; patterns; prediction; processes; rainfall; recharge; relief; Sonora Mexico; spatial distribution; Spokane Basin; statistical analysis; Tri-Canyons; United States; water resources; Western U.S.; Williston Basin DO - http://dx.doi.org/10.1016/j.jhydrol.2015.12.027 ER - TY - JOUR T1 - Magnetopause erosion during the 17 March 2015 magnetic storm: Combined field-aligned currents, auroral oval, and magnetopause observations AN - 1790973701; PQ0002953228 AB - We present multimission observations of field-aligned currents, auroral oval, and magnetopause crossings during the 17 March 2015 magnetic storm. Dayside reconnection is expected to transport magnetic flux, strengthen field-aligned currents, lead to polar cap expansion and magnetopause erosion. Our multimission observations assemble evidence for all these manifestations. After a prolonged period of strongly southward interplanetary magnetic field, Swarm and AMPERE observe significant intensification of field-aligned currents. The dayside auroral oval, as seen by DMSP, appears as a thin arc associated with ongoing dayside reconnection. Both the field-aligned currents and the auroral arc move equatorward reaching as low as ~60 degree magnetic latitude. Strong magnetopause erosion is evident in the in situ measurements of the magnetopause crossings by GOES 13/15 and MMS. The coordinated Swarm, AMPERE, DMSP, MMS and GOES observations, with both global and in situ coverage of the key regions, provide a clear demonstration of the effects of dayside reconnection on the entire magnetosphere. Key Points * Observed manifestations of dayside reconnection on field-aligned currents and auroral oval * Observed strong magnetopause erosion during storm main phase * Demonstrated effects of dayside reconnection on entire magnetosphere JF - Geophysical Research Letters AU - Le, G AU - Luehr, H AU - Anderson, B J AU - Strangeway, R J AU - Russell, C T AU - Singer, H AU - Slavin, JA AU - Zhang, Y AU - Huang, T AU - Bromund, K AU - Chi, P J AU - Lu, G AU - Fischer, D AU - Kepko, EL AU - Leinweber, H K AU - Magnes, W AU - Nakamura, R AU - Plaschke, F AU - Park, J AU - Rauberg, J AU - Stolle, C AU - Torbert, R B AD - NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2016/03// PY - 2016 DA - March 2016 SP - 2396 EP - 2404 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 43 IS - 6 SN - 0094-8276, 0094-8276 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Auroral oval KW - Expansion KW - Interplanetary magnetic field KW - Storms KW - Magnetopause KW - Magnetic fields KW - Erosion KW - Magnetosphere KW - Polar cap KW - Geomagnetic storms KW - Fluctuations KW - Q2 09262:Methods and instruments KW - SW 0810:General KW - M2 523.62:Solar Wind, Interplanetary Plasma (523.62) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1790973701?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=Magnetopause+erosion+during+the+17+March+2015+magnetic+storm%3A+Combined+field-aligned+currents%2C+auroral+oval%2C+and+magnetopause+observations&rft.au=Le%2C+G%3BLuehr%2C+H%3BAnderson%2C+B+J%3BStrangeway%2C+R+J%3BRussell%2C+C+T%3BSinger%2C+H%3BSlavin%2C+JA%3BZhang%2C+Y%3BHuang%2C+T%3BBromund%2C+K%3BChi%2C+P+J%3BLu%2C+G%3BFischer%2C+D%3BKepko%2C+EL%3BLeinweber%2C+H+K%3BMagnes%2C+W%3BNakamura%2C+R%3BPlaschke%2C+F%3BPark%2C+J%3BRauberg%2C+J%3BStolle%2C+C%3BTorbert%2C+R+B&rft.aulast=Le&rft.aufirst=G&rft.date=2016-03-01&rft.volume=43&rft.issue=6&rft.spage=2396&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2016GL068257 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Magnetic fields; Storms; Auroral oval; Erosion; Magnetosphere; Polar cap; Geomagnetic storms; Interplanetary magnetic field; Magnetopause; Expansion; Fluctuations DO - http://dx.doi.org/10.1002/2016GL068257 ER - TY - JOUR T1 - A Framework for Evaluating Climate Model Performance Metrics AN - 1790972048; PQ0003081517 AB - Given the large amount of climate model output generated from the series of simulations from phase 5 of the Coupled Model Intercomparison Project (CMIP5), a standard set of performance metrics would facilitate model intercomparison and tracking performance improvements. However, no framework exists for the evaluation of performance metrics. The proposed framework systematically integrates observations into metric assessment to quantitatively evaluate metrics. An optimal metric is defined in this framework as one that measures a behavior that is strongly linked to model quality in representing mean-state present-day climate. The goal of the framework is to objectively and quantitatively evaluate the ability of a performance metric to represent overall model quality. The framework is demonstrated, and the design principles are discussed using a novel set of performance metrics, which assess the simulation of top-of-atmosphere (TOA) and surface radiative flux variance and probability distributions within 34 CMIP5 models against Clouds and the Earth's Radiant Energy System (CERES) observations and GISS Surface Temperature Analysis (GISTEMP). Of the 44 tested metrics, the optimal metrics are found to be those that evaluate global-mean TOA radiation flux variance. JF - Journal of Climate AU - Baker, Noel C AU - Taylor, Patrick C AD - NASA Langley Research Center, Hampton, Virginia Y1 - 2016/03// PY - 2016 DA - March 2016 SP - 1773 EP - 1782 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 29 IS - 5 SN - 0894-8755, 0894-8755 KW - Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Physical Meteorology and Climatology KW - Radiative fluxes KW - Mathematical and statistical techniques KW - Ranking methods KW - Statistical techniques KW - Models and modeling KW - Climate models KW - Coupled models KW - Variability KW - Climate variability KW - Surface temperatures KW - Climate change KW - Evaluation KW - Assessments KW - Asteroids KW - Radiation KW - Modelling KW - Probability Distribution KW - Climates KW - Radiation flux KW - Tracking KW - Model Studies KW - Surface temperature KW - Clouds KW - Performance Evaluation KW - Numerical simulations KW - Standards KW - Fluctuations KW - AQ 00001:Water Resources and Supplies KW - SW 0810:General KW - M2 551.581:Latitudinal Influences (551.581) KW - Q2 09244:Air-sea coupling UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1790972048?accountid=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=A+Framework+for+Evaluating+Climate+Model+Performance+Metrics&rft.au=Baker%2C+Noel+C%3BTaylor%2C+Patrick+C&rft.aulast=Baker&rft.aufirst=Noel&rft.date=2016-03-01&rft.volume=29&rft.issue=5&rft.spage=1773&rft.isbn=&rft.btitle=&rft.title=Journal+of+Climate&rft.issn=08948755&rft_id=info:doi/10.1175%2FJCLI-D-15-0114.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Number of references - 30 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Radiation; Climate change; Tracking; Surface temperature; Modelling; Clouds; Surface temperatures; Climate models; Asteroids; Numerical simulations; Radiation flux; Evaluation; Performance Evaluation; Probability Distribution; Assessments; Climates; Standards; Fluctuations; Model Studies DO - http://dx.doi.org/10.1175/JCLI-D-15-0114.1 ER - TY - JOUR T1 - Cloud Object Analysis of CERES Aqua Observations of Tropical and Subtropical Cloud Regimes: Four-Year Climatology AN - 1790970951; PQ0003081514 AB - Four distinct types of cloud objects-tropical deep convection, boundary layer cumulus, stratocumulus, and overcast stratus-were previously identified from CERES Tropical Rainfall Measuring Mission (TRMM) data. Six additional types of cloud objects-cirrus, cirrocumulus, cirrostratus, altocumulus, transitional altocumulus, and solid altocumulus-are identified from CERES Aqua satellite data in this study. The selection criteria for the 10 cloud object types are based on CERES footprint cloud fraction and cloud-top pressure, as well as cloud optical depth for the high-cloud types. The cloud object is a contiguous region of the earth with a single dominant cloud-system type. The data are analyzed according to cloud object types, sizes, regions, and associated environmental conditions. The frequency of occurrence and probability density functions (PDFs) of selected physical properties are produced for the July 2006-June 2010 period. It is found that deep convective and boundary layer types dominate the total population while the six new types other than cirrostratus do not contribute much in the tropics and subtropics. There are pronounced differences in the size spectrum between the types, with the largest ones being of deep convective type and with stratocumulus and overcast types over the ocean basins off west coasts. The summary PDFs of radiative and cloud physical properties differ greatly among the size categories. For boundary layer cloud types, the differences come primarily from the locations of cloud objects: for example, coasts versus open oceans. They can be explained by considerable variations in large-scale environmental conditions with cloud object size, which will be further qualified in future studies. JF - Journal of Climate AU - Xu, Kuan-Man AU - Wong, Takmeng AU - Dong, Shengtao AU - Chen, Feng AU - Kato, Seiji AU - Taylor, Patrick C AD - Climate Science Branch, NASA Langley Research Center, Hampton, Virginia Y1 - 2016/03// PY - 2016 DA - March 2016 SP - 1617 EP - 1638 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 29 IS - 5 SN - 0894-8755, 0894-8755 KW - Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Atm/Ocean Structure/ Phenomena KW - Boundary layer KW - Convective clouds KW - Cumulus clouds KW - Physical Meteorology and Climatology KW - Cirrus clouds KW - Climatology KW - Radiative fluxes KW - Remote Sensing KW - Convection KW - Boundary Layers KW - Convection development KW - Asteroids KW - Physical Properties KW - Ocean basins KW - Coasts KW - Biological surveys KW - Marine KW - Climates KW - Brackish KW - Probability density function KW - Physical properties KW - Clouds KW - Satellite data KW - Oceans KW - Boundary layers KW - Tropical environment KW - Convective activity KW - Cloud optical depth KW - Tropical Rainfall Measuring Mission (TRMM) KW - Environmental conditions KW - AQ 00001:Water Resources and Supplies KW - SW 0810:General KW - M2 551.58:Climatology (551.58) KW - Q2 09244:Air-sea coupling UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1790970951?accountid=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=Cloud+Object+Analysis+of+CERES+Aqua+Observations+of+Tropical+and+Subtropical+Cloud+Regimes%3A+Four-Year+Climatology&rft.au=Xu%2C+Kuan-Man%3BWong%2C+Takmeng%3BDong%2C+Shengtao%3BChen%2C+Feng%3BKato%2C+Seiji%3BTaylor%2C+Patrick+C&rft.aulast=Xu&rft.aufirst=Kuan-Man&rft.date=2016-03-01&rft.volume=29&rft.issue=5&rft.spage=1617&rft.isbn=&rft.btitle=&rft.title=Journal+of+Climate&rft.issn=08948755&rft_id=info:doi/10.1175%2FJCLI-D-14-00836.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Number of references - 55 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Clouds; Convection; Biological surveys; Physical properties; Tropical environment; Boundary layers; Ocean basins; Climatology; Environmental conditions; Satellite data; Asteroids; Cloud optical depth; Convective activity; Tropical Rainfall Measuring Mission (TRMM); Convection development; Probability density function; Remote Sensing; Oceans; Climates; Physical Properties; Boundary Layers; Coasts; Marine; Brackish DO - http://dx.doi.org/10.1175/JCLI-D-14-00836.1 ER - TY - JOUR T1 - On the electron diffusion region in asymmetric reconnection with a guide magnetic field AN - 1790956090; PQ0002953185 AB - Particle-in-cell simulations in a 2.5-D geometry and analytical theory are employed to study the electron diffusion region in asymmetric reconnection with a guide magnetic field. The analysis presented here demonstrates that similar to the case without guide field, in-plane flow stagnation and null of the in-plane magnetic field are well separated. In addition, it is shown that the electric field at the local magnetic X point is again dominated by inertial effects, whereas it remains dominated by nongyrotropic pressure effects at the in-plane flow stagnation point. A comparison between local electron Larmor radii and the magnetic gradient scale lengths predicts that distribution should become nongyrotropic in a region enveloping both field reversal and flow stagnation points. This prediction is verified by an analysis of modeled electron distributions, which show clear evidence of mixing in the critical region. Key Points * Magnetic reconnection involves mixing of distributions from both inflow regions * The electric field at the flow stagnation point is always given by nongyrotropic pressure tensor effects * Even here, magnetic gradient scale lengths compared to Larmor radii are necessary to facilitate reconnection JF - Geophysical Research Letters AU - Hesse, Michael AU - Liu, Yi-Hsin AU - Chen, Li-Jen AU - Bessho, Naoki AU - Kuznetsova, Masha AU - Birn, Joachim AU - Burch, James L AD - Heliophysics Science Division, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Y1 - 2016/03// PY - 2016 DA - March 2016 SP - 2359 EP - 2364 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 43 IS - 6 SN - 0094-8276, 0094-8276 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Flow KW - Electron distribution KW - Simulation Analysis KW - Electric Fields KW - Electric field KW - Identification KW - Identification keys KW - Magnetic fields KW - Numerical simulations KW - Electric fields KW - Pressure effects KW - Magnetic reconnection KW - Q2 09262:Methods and instruments KW - SW 0810:General 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/1790956090?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=On+the+electron+diffusion+region+in+asymmetric+reconnection+with+a+guide+magnetic+field&rft.au=Hesse%2C+Michael%3BLiu%2C+Yi-Hsin%3BChen%2C+Li-Jen%3BBessho%2C+Naoki%3BKuznetsova%2C+Masha%3BBirn%2C+Joachim%3BBurch%2C+James+L&rft.aulast=Hesse&rft.aufirst=Michael&rft.date=2016-03-01&rft.volume=43&rft.issue=6&rft.spage=2359&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2016GL068373 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Magnetic fields; Electric fields; Pressure effects; Identification; Identification keys; Electron distribution; Numerical simulations; Magnetic reconnection; Electric field; Flow; Simulation Analysis; Electric Fields DO - http://dx.doi.org/10.1002/2016GL068373 ER - TY - JOUR T1 - Benchmarking NLDAS-2 Soil Moisture and Evapotranspiration to Separate Uncertainty Contributions AN - 1790928435; PQ0003081578 AB - Model benchmarking allows us to separate uncertainty in model predictions caused by model inputs from uncertainty due to model structural error. This method is extended with a "large sample" approach (using data from multiple field sites) to measure prediction uncertainty caused by errors in 1) forcing data, 2) model parameters, and 3) model structure, and use it to compare the efficiency of soil moisture state and evapotranspiration flux predictions made by the four land surface models in phase 2 of the North American Land Data Assimilation System (NLDAS-2). Parameters dominated uncertainty in soil moisture estimates and forcing data dominated uncertainty in evapotranspiration estimates; however, the models themselves used only a fraction of the information available to them. This means that there is significant potential to improve all three components of NLDAS-2. In particular, continued work toward refining the parameter maps and lookup tables, the forcing data measurement and processing, and also the land surface models themselves, has potential to result in improved estimates of surface mass and energy balances. JF - Journal of Hydrometeorology AU - Nearing, Grey S AU - Mocko, David M AU - Peters-Lidard, Christa D AU - Kumar, Sujay V AU - Xia, Youlong AD - Hydrological Sciences Laboratory, NASA GSFC, Greenbelt, Maryland, and Science Applications International Corporation, McLean, Virginia Y1 - 2016/03// PY - 2016 DA - March 2016 SP - 745 EP - 759 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 17 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 - Models and modeling KW - Land surface model KW - Model evaluation/performance KW - Prediction KW - Evapotranspiration estimates KW - Soil Water KW - Maps KW - Data assimilation KW - Soils KW - Modelling KW - North America KW - Evapotranspiration KW - Errors KW - Model Studies KW - Methodology KW - Hydrometeorology KW - Hydrometeorological research KW - Moisture Content KW - Soil moisture KW - Fluctuations KW - AQ 00001:Water Resources and Supplies KW - Q2 09103:Information services KW - SW 0810:General KW - M2 556.13:Evaporation/Evapotranspiration (556.13) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1790928435?accountid=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=Benchmarking+NLDAS-2+Soil+Moisture+and+Evapotranspiration+to+Separate+Uncertainty+Contributions&rft.au=Nearing%2C+Grey+S%3BMocko%2C+David+M%3BPeters-Lidard%2C+Christa+D%3BKumar%2C+Sujay+V%3BXia%2C+Youlong&rft.aulast=Nearing&rft.aufirst=Grey&rft.date=2016-03-01&rft.volume=17&rft.issue=3&rft.spage=745&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrometeorology&rft.issn=1525755X&rft_id=info:doi/10.1175%2FJHM-D-15-0063.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Number of references - 50 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Soils; Evapotranspiration; Methodology; Modelling; Hydrometeorological research; Evapotranspiration estimates; Soil moisture; Data assimilation; Hydrometeorology; Prediction; Moisture Content; Soil Water; Maps; Errors; Fluctuations; Model Studies; North America DO - http://dx.doi.org/10.1175/JHM-D-15-0063.1 ER - TY - JOUR T1 - Valence and metal/silicate partitioning of Mo; implications for conditions of Earth accretion and core formation AN - 1789748053; 2016-042482 AB - To better understand and predict the partition coefficient of Mo at the conditions of the deep interior of Earth and other terrestrial planets or bodies, we have undertaken new measurements of the valence and partitioning of Mo. X-ray absorption near edge structure (XANES) K-edge spectra for Mo have been measured in a series of Fe-bearing glasses produced at 1 bar and higher PT conditions. High pressure experiments have been carried out up to 19 GPa in order to better understand the effect of pressure on Mo partitioning. And, finally, a series of experiments at very low fO (sub 2) conditions and high Si content metallic liquids has been carried out to constrain the effect of Si on the partitioning of Mo between metallic liquids and silicate melt. The valence measurements demonstrate that Mo undergoes a transition from 4+ to 6+ near IW-1, in general agreement with previous 1 bar studies on FeO-free silicate melts. High pressure experiments demonstrate a modest pressure dependence of D(Mo) metal/silicate and, combined with previous results, show a significant decrease with pressure that must be quantified in any predictive expression. Finally, the effect of dissolved Si in Fe-rich metallic liquid is to decrease D(Mo) significantly, as suggested by previous work in metallurgical systems. The effect of pressure, temperature, oxygen fugacity, metallic liquid composition, and silicate melt composition can be quantified by using multiple linear regression of available experimental data for Mo. Our XANES results show that Mo will be 4+ at conditions of core formation, so only experiments carried out at fO (sub 2) of IW-1 and lower were used in the regressions. Application of predictive expressions to Earth accretion shows that D(Mo) decreases to values consistent with an equilibrium scenario for early Earth core-mantle. The Mo content of the primitive upper mantle (PUM) can be attained by metal-silicate equilibrium involving S-, C-, and Si-bearing metallic liquid, and peridotite silicate melt along the peridotite liquidus near 45 GPa and 3600 degrees C, late in the accretion process. This conclusion is insensitive to late giant impacts unless the degree of equilibration is very low (<5%). Abstract Copyright (2016) Elsevier, B.V. JF - Earth and Planetary Science Letters AU - Righter, K AU - Danielson, L R AU - Pando, K M AU - Shofner, G A AU - Sutton, S R AU - Newville, M AU - Lee, C T Y1 - 2016/03/01/ PY - 2016 DA - 2016 Mar 01 SP - 89 EP - 100 PB - Elsevier, Amsterdam VL - 437 SN - 0012-821X, 0012-821X KW - silicates KW - interior KW - mass spectra KW - mantle KW - silicon KW - melts KW - electron probe data KW - XANES spectra KW - partitioning KW - molybdenum KW - valency KW - spectra KW - Eh KW - P-T conditions KW - upper mantle KW - experimental studies KW - accretion KW - pressure KW - silicate melts KW - differentiation KW - siderophile elements KW - high pressure KW - X-ray spectra KW - ICP mass spectra KW - metals KW - core KW - 17B:Geophysics of minerals and rocks UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789748053?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Valence+and+metal%2Fsilicate+partitioning+of+Mo%3B+implications+for+conditions+of+Earth+accretion+and+core+formation&rft.au=Righter%2C+K%3BDanielson%2C+L+R%3BPando%2C+K+M%3BShofner%2C+G+A%3BSutton%2C+S+R%3BNewville%2C+M%3BLee%2C+C+T&rft.aulast=Righter&rft.aufirst=K&rft.date=2016-03-01&rft.volume=437&rft.issue=&rft.spage=89&rft.isbn=&rft.btitle=&rft.title=Earth+and+Planetary+Science+Letters&rft.issn=0012821X&rft_id=info:doi/10.1016%2Fj.epsl.2015.12.025 L2 - http://www.sciencedirect.com/science/journal/0012821X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 76 N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-05-19 N1 - CODEN - EPSLA2 N1 - SubjectsTermNotLitGenreText - accretion; core; differentiation; Eh; electron probe data; experimental studies; high pressure; ICP mass spectra; interior; mantle; mass spectra; melts; metals; molybdenum; P-T conditions; partitioning; pressure; siderophile elements; silicate melts; silicates; silicon; spectra; upper mantle; valency; X-ray spectra; XANES spectra DO - http://dx.doi.org/10.1016/j.epsl.2015.12.025 ER - TY - JOUR T1 - Climate data initiative; a geocuration effort to support climate resilience AN - 1789747633; 2016-045186 AB - Curation is traditionally defined as the process of collecting and organizing information around a common subject matter or a topic of interest and typically occurs in museums, art galleries, and libraries. The task of organizing data around specific topics or themes is a vibrant and growing effort in the biological sciences but to date this effort has not been actively pursued in the Earth sciences. In this paper, we introduce the concept of geocuration and define it as the act of searching, selecting, and synthesizing Earth science data/metadata and information from across disciplines and repositories into a single, cohesive, and useful collection. We present the Climate Data Initiative (CDI) project as a prototypical example. The CDI project is a systematic effort to manually curate and share openly available climate data from various federal agencies. CDI is a broad multi-agency effort of the U.S. government and seeks to leverage the extensive existing federal climate-relevant data to stimulate innovation and private-sector entrepreneurship to support national climate-change preparedness. We describe the geocuration process used in the CDI project, lessons learned, and suggestions to improve similar geocuration efforts in the future. JF - Computers & Geosciences AU - Ramachandran, Rahul AU - Bugbee, Kaylin AU - Tilmes, Curt AU - Privette, Ana Pinheiro Y1 - 2016/03// PY - 2016 DA - March 2016 SP - 22 EP - 29 PB - Elsevier, Amsterdam VL - 88 SN - 0098-3004, 0098-3004 KW - United States KW - virtual reality KW - public awareness KW - statistical analysis KW - data processing KW - education KW - climate change KW - climate KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789747633?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info: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=Climate+data+initiative%3B+a+geocuration+effort+to+support+climate+resilience&rft.au=Ramachandran%2C+Rahul%3BBugbee%2C+Kaylin%3BTilmes%2C+Curt%3BPrivette%2C+Ana+Pinheiro&rft.aulast=Ramachandran&rft.aufirst=Rahul&rft.date=2016-03-01&rft.volume=88&rft.issue=&rft.spage=22&rft.isbn=&rft.btitle=&rft.title=Computers+%26+Geosciences&rft.issn=00983004&rft_id=info:doi/10.1016%2Fj.cageo.2015.12.002 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 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 19 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2016-05-19 N1 - CODEN - GGEOD5 N1 - SubjectsTermNotLitGenreText - climate; climate change; data processing; education; public awareness; statistical analysis; United States; virtual reality DO - http://dx.doi.org/10.1016/j.cageo.2015.12.002 ER - TY - JOUR T1 - On the Decadal Trend of Global Mean Sea Level an