globalchange  > 影响、适应和脆弱性
DOI: 10.5194/tc-7-375-2013
Scopus记录号: 2-s2.0-84874462170
论文题名:
Bedmap2: Improved ice bed, surface and thickness datasets for Antarctica
作者: Fretwell P; , Pritchard H; D; , Vaughan D; G; , Bamber J; L; , Barrand N; E; , Bell R; , Bianchi C; , Bingham R; G; , Blankenship D; D; , Casassa G; , Catania G; , Callens D; , Conway H; , Cook A; J; , Corr H; F; J; , Damaske D; , Damm V; , Ferraccioli F; , Forsberg R; , Fujita S; , Gim Y; , Gogineni P; , Griggs J; A; , Hindmarsh R; C; A; , Holmlund P; , Holt J; W; , Jacobel R; W; , Jenkins A; , Jokat W; , Jordan T; , King E; C; , Kohler J; , Krabill W; , Riger-Kusk M; , Langley K; A; , Leitchenkov G; , Leuschen C; , Luyendyk B; P; , Matsuoka K; , Mouginot J; , Nitsche F; O; , Nogi Y; , Nost O; A; , Popov S; V; , Rignot E; , Rippin D; M; , Rivera A; , Roberts J; , Ross N; , Siegert M; J; , Smith A; M; , Steinhage D; , Studinger M; , Sun B; , Tinto B; K; , Welch B; C; , Wilson D; , Young D; A; , Xiangbin C; , Zirizzotti A
刊名: Cryosphere
ISSN: 19940416
出版年: 2013
卷: 7, 期:1
起始页码: 375
结束页码: 393
语种: 英语
英文关键词: cryosphere ; data set ; ice cover ; ice sheet ; ice thickness ; map ; mountain region ; sea ice ; sea level ; seafloor ; subglacial environment ; Antarctica
英文摘要: We present Bedmap2, a new suite of gridded products describing surface elevation, ice-thickness and the seafloor and subglacial bed elevation of the Antarctic south of 60 S. We derived these products using data from a variety of sources, including many substantial surveys completed since the original Bedmap compilation (Bedmap1) in 2001. In particular, the Bedmap2 ice thickness grid is made from 25 million measurements, over two orders of magnitude more than were used in Bedmap1. In most parts of Antarctica the subglacial landscape is visible in much greater detail than was previously available and the improved data-coverage has in many areas revealed the full scale of mountain ranges, valleys, basins and troughs, only fragments of which were previously indicated in local surveys. The derived statistics for Bedmap2 show that the volume of ice contained in the Antarctic ice sheet (27 million km3) and its potential contribution to sea-level rise (58 m) are similar to those of Bedmap1, but the mean thickness of the ice sheet is 4.6% greater, the mean depth of the bed beneath the grounded ice sheet is 72 m lower and the area of ice sheet grounded on bed below sea level is increased by 10%. The Bedmap2 compilation highlights several areas beneath the ice sheet where the bed elevation is substantially lower than the deepest bed indicated by Bedmap1. These products, along with grids of data coverage and uncertainty, provide new opportunities for detailed modelling of the past and future evolution of the Antarctic ice sheets. © 2013 Author(s).
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/74990
Appears in Collections:影响、适应和脆弱性
气候变化与战略

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作者单位: British Antarctic Survey, Cambridge, United Kingdom; School of Geographical Sciences, University of Bristol, United Kingdom; Lamont-Doherty Earth Observatory of Columbia University, Palisades, United States; Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy; School of Geosciences, University of Aberdeen, United Kingdom; Institute for Geophysics, University of Texas at Austin, United States; Centro de Estudios Cientificos, Santiago, Chile; Laboratoire de Glaciologie, Université Libre de Bruxelles, Brussels, Belgium; Earth and Space Sciences, University of Washington, Seattle, United States; Department of Geography, Swansea University, Swansea, United Kingdom; Federal Institute for Geosciences and Natural Resources, Hannover, Germany; National Space Institute, Technical University of Denmark, Denmark; National Institute of Polar Research, Tokyo, Japan; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States; Electrical Engineering and Computer Science, University of Kansas, Lawrence, United States; Stockholm University, Stockholm, Sweden; St. Olaf College, Northfield, MN 55057, United States; Alfred Wegener Institute, Bremerhaven, Germany; Norwegian Polar Institute, Fram Centre, Tromsø, Norway; NASA Wallops Flight Facility, VA, United States; College of Science, University of Canterbury, Christchurch, New Zealand; Department of Geosciences, University of Oslo, Norway; Institute for Geology and Mineral Resources of the World Ocean, St.-Petersburg, Russian Federation; Earth Research Institute, University of California in Santa Barbara, United States; Norwegian Polar Institute, Tromso, Norway; Department of Earth System Science, University of California, Irvine, United States; Polar Marine Geosurvey Expedition, St.-Petersburg, Russian Federation; School of Physical Sciences, University of California, Irvine, United States; Environment Department, University of York, Heslington, York, YO10 5DD, United Kingdom; Department of Sustainability Environment, Water, Population and Communities, Australian Antarctic Division, Hobart, TAS, Australia; School of Geography, Politics and Sociology, Newcastle University, Newcastle upon Tyne, NE1 7RU, United Kingdom; NASA Goddard Space Flight Center, Greenbelt, United States; Polar Research Institute of China, Shanghai, China; Instituite for Crustal Studies, University of California in Santa Barbara, United States

Recommended Citation:
Fretwell P,, Pritchard H,D,et al. Bedmap2: Improved ice bed, surface and thickness datasets for Antarctica[J]. Cryosphere,2013-01-01,7(1)
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