First look under giant glacier finds troubling currents. If Thwaites Glacier collapsed, it could raise sea levels worlwide by more than half a metre

Tollefson, Jeff

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<p align="justify"> Taking advantage of rare ice-free waters in West Antarctica last February, scientists got their first look underneath Thwaites Glacier, a massive and increasingly unstable formation perched at the edge of the continent. What they saw only increased fears of a collapse that could raise global sea levels by more than half a metre. Data gathered by a robotic submarine deployed by scientists with the International Thwaites Glacier Collaboration suggest that warm water from the deep ocean is welling up from three directions and mixing underneath the ice. </p>
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