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Doomsday Glacier's Cracks Double, Threatening Sea Levels

12/23/2025

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Summary

Story summary

The International Thwaites Glacier Collaboration reports that cracks in Thwaites Glacier increased from 165 km to 336 km between 2002 and 2022.
The study identifies a feedback loop where cracks accelerate ice flow and generate new cracks, a process monitored with GPS devices showing changes advancing about 55 kilometers per year.
The findings underscore the Doomsday Glacier’s contribution to global sea level rise.

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Story summary

The International Thwaites Glacier Collaboration reports that cracks in Thwaites Glacier increased from 165 km to 336 km between 2002 and 2022.
The study identifies a feedback loop where cracks accelerate ice flow and generate new cracks, a process monitored with GPS devices showing changes advancing about 55 kilometers per year.
The findings underscore the Doomsday Glacier’s contribution to global sea level rise.