دورية أكاديمية
A synthesis of the basal thermal state of the Greenland Ice Sheet.
| العنوان: | A synthesis of the basal thermal state of the Greenland Ice Sheet. |
|---|---|
| المؤلفون: | MacGregor JA; Institute for Geophysics, The University of Texas at Austin, Austin, Texas, USA., Fahnestock MA; Geophysical Institute, University of Alaska Fairbanks, Fairbanks, Alaska, USA., Catania GA; Institute for Geophysics, The University of Texas at Austin, Austin, Texas, USA; Dept. of Geological Sciences, The University of Texas at Austin, Austin, Texas, USA., Aschwanden A; Geophysical Institute, University of Alaska Fairbanks, Fairbanks, Alaska, USA., Clow GD; U.S. Geological Survey, Denver, Colorado, USA; Institute of Arctic and Alpine Research, University of Colorado, Boulder, Colorado, USA., Colgan WT; Dept. of Earth and Space Science and Engineering, York University, Toronto, Canada., Gogineni SP; Center for Remote Sensing of Ice Sheets, The University of Kansas, Lawrence, Kansas, USA., Morlighem M; Dept. of Earth System Science, University of California, Irvine, California, USA., Nowicki SM; Cryospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA., Paden JD; Center for Remote Sensing of Ice Sheets, The University of Kansas, Lawrence, Kansas, USA., Price SF; Fluid Dynamics Group, Los Alamos National Laboratory, Los Alamos, New Mexico, USA., Seroussi H; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA. |
| المصدر: | Journal of geophysical research. Earth surface [J Geophys Res Earth Surf] 2016 Aug 10; Vol. 121 (7), pp. 1328-1350. Date of Electronic Publication: 2016 Jul 23. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Wiley Subscription Services, Inc Country of Publication: United States NLM ID: 101661774 Publication Model: Print-Electronic Cited Medium: Print ISSN: 2169-9003 (Print) Linking ISSN: 21699003 NLM ISO Abbreviation: J Geophys Res Earth Surf Subsets: PubMed not MEDLINE |
| أسماء مطبوعة: | Original Publication: Hoboken, NJ : Wiley Subscription Services, Inc., 2013- |
| مستخلص: | 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 within 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 SeaRISE effort. New remote-sensing inferences of the basal thermal state are derived from Holocene radiostratigraphy, modern surface velocity and 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 poor 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. |
| References: | Science. 2016 Feb 5;351(6273):590-3. (PMID: 26912699) J Geophys Res Earth Surf. 2015 Feb;120(2):212-241. (PMID: 26213664) Nature. 2007 Feb 22;445(7130):904-7. (PMID: 17314977) Proc Natl Acad Sci U S A. 2014 Jun 24;111(25):9070-2. (PMID: 24927578) Science. 2005 Oct 21;310(5747):456-60. (PMID: 16239468) Geophys Res Lett. 2014 Oct 28;41(20):7209-7216. (PMID: 25821275) Science. 1998 Oct 9;282(5387):268-71. (PMID: 9765146) Science. 1993 Dec 3;262(5139):1530-4. (PMID: 17829381) Nat Commun. 2016 Feb 01;7:10524. (PMID: 26830316) Proc Natl Acad Sci U S A. 2013 Aug 27;110(35):14156-61. (PMID: 23940337) Sci Adv. 2015 Jul 10;1(6):e1500093. (PMID: 26601210) Science. 2008 Jul 4;321(5885):111-3. (PMID: 18599784) Science. 2001 Dec 14;294(5550):2338-42. (PMID: 11743197) Proc Natl Acad Sci U S A. 2013 Jul 23;110(30):12225-8. (PMID: 23836631) Earths Future. 2015 Jul;3(7):252-267. (PMID: 27819011) Nature. 2015 Feb 12;518(7538):223-7. (PMID: 25607355) Nature. 2015 Oct 29;526(7575):692-5. (PMID: 26511580) Proc Natl Acad Sci U S A. 2011 May 31;108(22):8978-83. (PMID: 21576500) Nature. 2014 Oct 2;514(7520):80-3. (PMID: 25279921) |
| معلومات مُعتمدة: | United States Goddard Space Flight Center NASA; United States Science Earth Science System NASA; N-999999 United States Intramural NASA; Science Earth Science System NASA |
| تواريخ الأحداث: | Date Created: 20170207 Latest Revision: 20201001 |
| رمز التحديث: | 20231215 |
| مُعرف محوري في PubMed: | PMC5289704 |
| DOI: | 10.1002/2015JF003803 |
| PMID: | 28163988 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 2169-9003 |
|---|---|
| DOI: | 10.1002/2015JF003803 |