DOI: 10.1002/2016GL068972
论文题名: Four-decade record of pervasive grounding line retreat along the Bellingshausen margin of West Antarctica
作者: Christie F.D.W. ; Bingham R.G. ; Gourmelen N. ; Tett S.F.B. ; Muto A.
刊名: Geophysical Research Letters
ISSN: 0094-8976
EISSN: 1944-8707
出版年: 2016
卷: 43, 期: 11 起始页码: 5741
结束页码: 5749
语种: 英语
英文关键词: Antarctica
; grounding line
; ice-ocean interaction
; InSAR
; Landsat
; Pine Island Glacier
Scopus关键词: Sea ice
; Sea level
; Antarctica
; Grounding line
; Ice-ocean interactions
; InSAR
; LANDSAT
; Pine island glaciers
; Ice
英文摘要: Changes to the grounding line, where grounded ice starts to float, can be used as a remotely sensed measure of ice-sheet susceptibility to ocean-forced dynamic thinning. Constraining this susceptibility is vital for predicting Antarctica's contribution to rising sea levels. We use Landsat imagery to monitor grounding line movement over four decades along the Bellingshausen margin of West Antarctica, an area little monitored despite potential for future ice losses. We show that ~65% of the grounding line retreated from 1990 to 2015, with pervasive and accelerating retreat in regions of fast ice flow and/or thinning ice shelves. Venable Ice Shelf confounds expectations in that, despite extensive thinning, its grounding line has undergone negligible retreat. We present evidence that the ice shelf is currently pinned to a sub-ice topographic high which, if breached, could facilitate ice retreat into a significant inland basin, analogous to nearby Pine Island Glacier. ©2016. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84973489683&doi=10.1002%2f2016GL068972&partnerID=40&md5=e4d4fbadab98066950d4ccb94b541e73
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9939
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: School of GeoSciences, University of Edinburgh, Edinburgh, United Kingdom
Recommended Citation:
Christie F.D.W.,Bingham R.G.,Gourmelen N.,et al. Four-decade record of pervasive grounding line retreat along the Bellingshausen margin of West Antarctica[J]. Geophysical Research Letters,2016-01-01,43(11).