Ancient bones revealed how fast the melting ice raised the Antarctic shorelines.
fastest-melting glaciers
, Thwaites has earned the nickname" Doomsday Glacier." Since the 1980s, Thwaites has lost an estimated 595 billion tons of ice, contributing to a 4% rise in global sea levels. Thwaites and its northern neighbor, the Pine Island Glacier, cover enormous expanses; Thwaites has a surface area of about 74,130 square miles and Pine Island 62,660 square miles .
As the sea-facing ends of the glaciers are positioned above a bowl-like ocean basin, both glaciers are exposed on their undersides to currents of warm, dense, salty water. This warm water isn't just melting the glaciers where they extend into the Amundsen Sea, but it is also whittling away at them from underneath, unpinning them from their main anchoring points located to the north.
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