globalchange  > 气候变化与战略
DOI: 10.1038/s41561-019-0510-8
论文题名:
Deep glacial troughs and stabilizing ridges unveiled beneath the margins of the Antarctic ice sheet
作者: Morlighem M.; Rignot E.; Binder T.; Blankenship D.; Drews R.; Eagles G.; Eisen O.; Ferraccioli F.; Forsberg R.; Fretwell P.; Goel V.; Greenbaum J.S.; Gudmundsson H.; Guo J.; Helm V.; Hofstede C.; Howat I.; Humbert A.; Jokat W.; Karlsson N.B.; Lee W.S.; Matsuoka K.; Millan R.; Mouginot J.; Paden J.; Pattyn F.; Roberts J.; Rosier S.; Ruppel A.; Seroussi H.; Smith E.C.; Steinhage D.; Sun B.; Broeke M.R.; Ommen T.D.; Wessem M.; Young D.A.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2020
卷: 13, 期:2
起始页码: 132
结束页码: 137
语种: 英语
英文关键词: climate change ; glacier ; glacier retreat ; ice sheet ; sea level change ; subglacial environment ; Antarctic Ice Sheet ; Antarctica ; East Antarctica ; Transantarctic Mountains ; Wilkes Land
英文摘要: The Antarctic ice sheet has been losing mass over past decades through the accelerated flow of its glaciers, conditioned by ocean temperature and bed topography. Glaciers retreating along retrograde slopes (that is, the bed elevation drops in the inland direction) are potentially unstable, while subglacial ridges slow down the glacial retreat. Despite major advances in the mapping of subglacial bed topography, significant sectors of Antarctica remain poorly resolved and critical spatial details are missing. Here we present a novel, high-resolution and physically based description of Antarctic bed topography using mass conservation. Our results reveal previously unknown basal features with major implications for glacier response to climate change. For example, glaciers flowing across the Transantarctic Mountains are protected by broad, stabilizing ridges. Conversely, in the marine basin of Wilkes Land, East Antarctica, we find retrograde slopes along Ninnis and Denman glaciers, with stabilizing slopes beneath Moscow University, Totten and Lambert glacier system, despite corrections in bed elevation of up to 1 km for the latter. This transformative description of bed topography redefines the high- and lower-risk sectors for rapid sea level rise from Antarctica; it will also significantly impact model projections of sea level rise from Antarctica in the coming centuries. © 2019, This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169651
Appears in Collections:气候变化与战略

Files in This Item:

There are no files associated with this item.


作者单位: Department of Earth System Science, University of California, Irvine, CA, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany; Jackson School of Geosciences, UT Austin, Austin, TX, United States; Department of Geosciences, University of Tübingen, Tübingen, Germany; University of Bremen, Bremen, Germany; British Antarctic Survey, Cambridge, United Kingdom; Technical University of Denmark, Kongens Lyngby, Denmark; National Centre for Polar and Ocean Research, Vasco, Goa, India; Northumbria University, Newcastle upon Tyne, United Kingdom; Polar Research Institute of China, Shanghai, China; School of Earth Sciences, Ohio State University, Columbus, OH, United States; Geological Survey of Denmark and Greenland, Copenhagen, Denmark; Korea Polar Research Institute, Incheon, South Korea; Norwegian Polar Institute, Tromsø, Norway; Institut des Géosciences de l’Environnement, CNRS, Université Grenoble Alpes, Grenoble, France; Center for Remote Sensing of Ice Sheets, University of Kansas, Lawrence, KS, United States; Université libre de Bruxelles, Brussels, Belgium; Australian Antarctic Division, Kingston, TAS, Australia; Antarctic Climate & Ecosystems Cooperative Research Centre, Tasmania, Australia; Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia; Federal Institute for Geosciences and Natural Resources, Hanover, Germany; Institute for Marine and Atmospheric Research, Utrecht University, Utrecht, Netherlands

Recommended Citation:
Morlighem M.,Rignot E.,Binder T.,et al. Deep glacial troughs and stabilizing ridges unveiled beneath the margins of the Antarctic ice sheet[J]. Nature Geoscience,2020-01-01,13(2)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Morlighem M.]'s Articles
[Rignot E.]'s Articles
[Binder T.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Morlighem M.]'s Articles
[Rignot E.]'s Articles
[Binder T.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Morlighem M.]‘s Articles
[Rignot E.]‘s Articles
[Binder T.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.