Recent dramatic thinning of largest West Antarctic ice stream triggered by oceans

被引：257
作者：
Payne, AJ
Vieli, A
Shepherd, AP
Wingham, DJ
Rignot, E
机构：
[1] Univ Bristol, CPOM, Bristol BS8 1SS, Avon, England
[2] Univ Cambridge, Scott Polar Res Inst, CPOM, Cambridge CB2 1ER, England
[3] UCL, CPOM, London WC1E 6BT, England
[4] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
来源：
GEOPHYSICAL RESEARCH LETTERS | 2004年 / 31卷 / 23期
关键词：
D O I：
10.1029/2004GL021284
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
A growing body of observational data suggests that Pine Island Glacier (PIG) is changing on decadal or shorter timescales. These changes may have far-reaching consequences for the future of the West Antarctic ice sheet (WAIS) and global sea levels because of PIG's role as the ice sheet's primary drainage portal. We test the hypothesis that these changes are triggered by the adjoining ocean. Specifically, we employ an advanced numerical ice-flow model to simulate the effects of perturbations at the grounding line on PIG's dynamics. The speed at which these changes are propagated upstream implies a tight coupling between ice-sheet interior and surrounding ocean.
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页码：1 / 4
页数：4
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