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Antarctic Glacier Retreats Rapidly, Poses Sea-Level Threat

11/9/2025

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Summary

Story summary

Hektoria Glacier on the eastern Antarctic Peninsula retreated faster than any grounded Antarctic glacier, losing five miles in two months in late 2022.
Researchers found a flat seabed allowed the glacier to become buoyant, triggering calving and a peak retreat of about half a mile per day.
The findings, published in Nature Geoscience, call for updated glacier models and identifying other glaciers with similar conditions to assess sea-level risk.

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Story summary

Hektoria Glacier on the eastern Antarctic Peninsula retreated faster than any grounded Antarctic glacier, losing five miles in two months in late 2022.
Researchers found a flat seabed allowed the glacier to become buoyant, triggering calving and a peak retreat of about half a mile per day.
The findings, published in Nature Geoscience, call for updated glacier models and identifying other glaciers with similar conditions to assess sea-level risk.