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Antarctic Glaciers Redistribute Ice at Unprecedented Speed, Study Finds

New research reveals that glaciers in West Antarctica can redirect ice flow between neighboring streams in under 18 years, reshaping models of ice-sheet dynamics and sea-level projections.

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Overview

  • A study published on May 8, 2025, confirms that West Antarctic glaciers can siphon ice from neighboring streams in less than 18 years, overturning assumptions that such processes take centuries.
  • High-resolution satellite data from ESA’s Sentinel-1 and CryoSat missions tracked dramatic changes in glacial velocity, with some streams accelerating by up to 87% between 2005 and 2022.
  • The Kohler East Glacier, one of the fastest-moving streams, has absorbed ice from the slower Kohler West Glacier, causing a 10% slowdown in Kohler West over the study period.
  • Researchers emphasize the importance of ice flow redirection as a critical factor in ice-sheet dynamics, with implications for sea-level rise and the stability of floating ice shelves.
  • Projections from the study warn that if current trends continue, rising sea levels could endanger over 410 million people globally by 2100, underscoring the urgency of climate adaptation efforts.