In DepthGeophysics

Rising bedrock may delay ice sheet collapse

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Science  22 Jun 2018:
Vol. 360, Issue 6395, pp. 1283
DOI: 10.1126/science.360.6395.1283

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The West Antarctic Ice Sheet is vulnerable to catastrophic collapse—a scenario that could raise global sea levels by 3 meters in the coming centuries—because it sits on bedrock that lies far below sea level. A new study published by Science documents a process that could slow the collapse. As ice melts and the crust is lightened, the bedrock beneath West Antarctica is rising rapidly. In places it could rise 8 meters over the coming century, potentially protecting the ice from the warm seawater that is melting it from below.