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Observed rapid bedrock uplift in Amundsen Sea Embayment promotes ice-sheet stability

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Science  22 Jun 2018:
Vol. 360, Issue 6395, pp. 1335-1339
DOI: 10.1126/science.aao1447

A quick rebound for Antarctic crust

Earth's crust deforms under the load of glaciers and ice sheets. When these masses are removed, the crust rebounds at a time scale determined by the viscosity of the upper mantle. Using GPS, Barletta et al. found that the viscosity of the mantle under the West Antarctic Ice Sheet is much lower than expected. This means that as ice is lost, the crust rebounds much faster than previously expected. Although estimates of total ice loss have to be revised upward, the surprising finding indicates that the ice sheet may stabilize against catastrophic collapse.

Science, this issue p. 1335