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Antarctic central ice sheet – stable since much warmer times

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Antarctic study shows central ice sheet is stable since milder times

Posted: 05 May 2017 07:36 AM PDT

Central parts of Antarctica’s ice sheet have been stable for millions of years, from a time when conditions were considerably warmer than now, research suggests…Although the discovery demonstrates the long-term stability of some parts of Antarctica’s ice sheet, scientists remain concerned that ice at its coastline is vulnerable to rising temperatures….

…”These findings help us understand how the Antarctic Ice Sheet has evolved, and to fine-tune our models and predict its future. The preservation of old rock surfaces is testimony to the stability of at least the central parts of the Antarctic Ice Sheet — but we are still very concerned over other parts of Antarctica amid climate change.”…

David E. Sugden, Andrew S. Hein, John Woodward, Shasta M. Marrero, Ángel Rodés, Stuart A. Dunning, Finlay M. Stuart, Stewart P.H.T. Freeman, Kate Winter, Matthew J. Westoby. The million-year evolution of the glacial trimline in the southernmost Ellsworth Mountains, Antarctica. Earth and Planetary Science Letters, 2017; 469: 42 DOI: 10.1016/j.epsl.2017.04.006

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