Effect of sedimentation on ice-sheet grounding-line stability

被引：150

作者：

Alley, Richard B. ^{[1
]}

Anandakrishnan, Sridhar

Dupont, Todd K.

Parizek, Byron R.

Pollard, David

机构：

[1] Penn State Univ, Dept Geosci, University Pk, PA 16802 USA

[2] Penn State Univ, Earth & Environm Syst Inst, University Pk, PA 16802 USA

[3] Univ Illinois, Dept Earth & Environm Sci, Chicago, IL 60607 USA

[4] Coll New Jersey, Dept Phys, Ewing, NJ 08628 USA

来源：

SCIENCE | 2007年 / 315卷 / 5820期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1126/science.1138396

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Sedimentation filling space beneath ice shelves helps to stabilize ice sheets against grounding-line retreat in response to a rise in relative sea level of at least several meters. Recent Antarctic changes thus cannot be attributed to sea-level rise, strengthening earlier interpretations that warming has driven ice-sheet mass loss. Large sea-level rise, such as the approximate to 100-meter rise at the end of the last ice age, may overwhelm the stabilizing feedback from sedimentation, but smaller sea-level changes are unlikely to have synchronized the behavior of ice sheets in the past.

引用

页码：1838 / 1841

页数：4

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