气候变化领域集成服务门户(CCPortal): Bedmap2: Improved ice bed, surface and thickness datasets for Antarctica

CCPortal

DOI	10.5194/tc-7-375-2013
	Bedmap2: Improved ice bed, surface and thickness datasets for Antarctica
	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.
发表日期	2013
ISSN	19940416
卷号	7 期号:1
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).
学科领域	cryosphere; data set; ice cover; ice sheet; ice thickness; map; mountain region; sea ice; sea level; seafloor; subglacial environment; Antarctica
语种	英语
scopus关键词	cryosphere; data set; ice cover; ice sheet; ice thickness; map; mountain region; sea ice; sea level; seafloor; subglacial environment; Antarctica
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120303
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 ...
推荐引用方式 GB/T 7714	Fretwell P.,Pritchard H.D.,Vaughan D.G.,et al. Bedmap2: Improved ice bed, surface and thickness datasets for Antarctica[J],2013,7(1).
APA	Fretwell P..,Pritchard H.D..,Vaughan D.G..,Bamber J.L..,Barrand N.E..,...&Zirizzotti A..(2013).Bedmap2: Improved ice bed, surface and thickness datasets for Antarctica.Cryosphere,7(1).
MLA	Fretwell P.,et al."Bedmap2: Improved ice bed, surface and thickness datasets for Antarctica".Cryosphere 7.1(2013).