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Lookup NU author(s): Sonam Rinzin
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On 3 October 2023, a multihazard cascade in the Sikkim Himalaya, India, was triggered by 14.7 million cubic meters of frozen lateral moraine collapsing into South Lhonak Lake. The impact generated an ~20-meter tsunami-like impact wave, which breached the moraine and drained ~50 million cubic meters of the lake's water. The ensuing glacial lake outburst flood (GLOF) eroded ~270 million cubic meters of sediment, which overwhelmed infrastructure, including hydropower installations along the Teesta River. The physical scale and human and economic impacts of this event prompt urgent reflection on the role of climate change and human activities in exacerbating such disasters. Insights into multihazard evolution are pivotal for informing policy development, enhancing early warning systems (EWS), and spurring paradigm shifts in GLOF risk management strategies in the Himalaya and other mountain environments.
Author(s): Sattar A, Cook KL, Rai SK, Berthier E, Allen S, Rinzin S, de Vries MVW, Haeberli W, Kushwaha P, Shugar DH, Emmer A, Haritashya UK, Frey H, Rao P, Gurudin KSK, Rai P, Rajak R, Hossain F, Huggel C, Mergili M, Azam MF, Gascoin S, Carrivick JL, Bell LE, Ranjan RK, Rashid I, Kulkarni AV, Petley D, Schwanghart W, Watson CS, Islam N, Gupta MD, Lane SN, Bhat SY
Publication type: Article
Publication status: Published
Journal: Science
Year: 2025
Volume: 387
Issue: 6740
Print publication date: 21/03/2025
Online publication date: 30/01/2025
Acceptance date: 20/12/2024
ISSN (print): 0036-8075
ISSN (electronic): 1095-9203
Publisher: American Association for the Advancement of Science (AAAS)
URL: https://doi.org/10.1126/science.ads2659
DOI: 10.1126/science.ads2659
PubMed id: 39883788
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