Articles | Volume 22, issue 10
Nat. Hazards Earth Syst. Sci., 22, 3309–3327, 2022
Nat. Hazards Earth Syst. Sci., 22, 3309–3327, 2022
Research article
13 Oct 2022
Research article | 13 Oct 2022

Pre-collapse motion of the February 2021 Chamoli rock–ice avalanche, Indian Himalaya

Maximillian Van Wyk de Vries et al.

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Cited articles

Alexandrov, O.: NeoGeographyToolkit/StereoPipeline, GitHub [code],, last access: 12 October 2022. a
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Barba-Sevilla, M., Baird, B. W., Liel, A. B., and Tiampo, K. F.: Hazard Implications of the 2016 Mw 5.0 Cushing, OK Earthquake from a Joint Analysis of Damage and InSAR Data, Remote Sens., 10, 1715,, 2018. a
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Short summary
On 7 February 2021, a large rock–ice avalanche occurred in Chamoli, Indian Himalaya. The resulting debris flow swept down the nearby valley, leaving over 200 people dead or missing. We use a range of satellite datasets to investigate how the collapse area changed prior to collapse. We show that signs of instability were visible as early 5 years prior to collapse. However, it would likely not have been possible to predict the timing of the event from current satellite datasets.
Final-revised paper