Research Article

A massive rock and ice avalanche caused the 2021 disaster at Chamoli, Indian Himalaya

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Science  16 Jul 2021:
Vol. 373, Issue 6552, pp. 300-306
DOI: 10.1126/science.abh4455

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A deadly cascade

A catastrophic landslide in Uttarakhand state in India on February 2021 damaged two hydropower plants, and more than 200 people were killed or are missing. Shugar et al. describe the cascade of events that led to this disaster. A massive rock and ice avalanche roared down a Himalayan valley, turning into a deadly debris flow upstream from the first of the two hydropower plants. The sequence of events highlights the increasing risk in the Himalayas caused by increased warming and development.

Science, abh4455, this issue p. 300

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