A large part of the West Antarctic ice sheet appears to be in an “unstoppable” decline meaning global sea level rise predictions will have to be revised, scientists have found.
Glaciers in the Amundsen Sea that contain enough ice to raise sea levels by four feet (1.2 metres) are thawing faster than expected and there is nothing to stop them melting into the ocean, according to a study based on 40 years of observations by researchers from the Nasa space agency and the University of California, Irvine.
“The collapse of this sector of West Antarctica appears to be unstoppable,” said glaciologist Eric Rignot, lead author of the study. “It’s passed the point of no return.”
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