Ice-sheet instabilities widen possibilities of future sea-level rise

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  • Alex Robel in Antarctica Alex Robel in Antarctica
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Glaciers flowing into the sea will somewhere lose contact with the bedrock underneath and start to float on the ocean. That location, called the grounding line, depends sensitively on the ice thickness; so too does the rate of ice flow. And if the bedrock slopes inward, away from the ocean, positive feedback between those dependencies produces the so-called marine ice-sheet instability: An inward fluctuation of the grounding line triggers an accelerating—and potentially unstoppable—retreat of the ice sheet that raises global sea levels precipitously. Alexander Robel (Georgia Tech) and colleagues have developed a framework to understand how the dynamics associated with the marine ice-sheet instability amplify the uncertainty in predictions of future sea-level rise. Robel is an assistant professor in the School of Earth and Atmospheric Sciences.

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College of Sciences, EAS

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Keywords
ice melt, climate change
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  • Created By: A. Maureen Rouhi
  • Workflow Status: Published
  • Created On: Jul 19, 2019 - 2:28pm
  • Last Updated: Jul 19, 2019 - 2:28pm