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Geomorphic and geologic controls of geohazards induced by Nepal's 2015 Gorkha earthquake

Citation

Kargel, JS and Leonard, GJ and Shugar, DH and Haritashya, UK and Bevington, A and Fielding, EJ and Fujita, K and Geertsema, M and Miles, ES and Steiner, J and Anderson, E and Bajracharya, S and Bawden, GW and Breashears, DF and Byers, A and Collins, B and Dhital, MR and Donnellan, A and Evans, TL and Geai, ML and Glasscoe, MT and Green, D and Gurung, DR and Heijenk, R and Hilborn, A and Hudnut, K and Huyck, C and Immerzeel, WW and Liming, J and Jibson, R and Kaab, A and Khanal, NR and Kirschbaum, D and Kraaijenbrink, PDA and Lamsal, D and Shiyin, L and Mingyang, L and McKinney, D and Nahirnick, NK and Zhuotong, N and Ojha, S and Olsenholler, J and Painter, TH and Pleasants, M and Pratima, KC and Yuan, QI and Raup, BH and Regmi, D and Rounce, DR and Sakai, A and Donghui, S and Shea, JM and Shrestha, AB and Shukla, A and Stumm, D and Van der Kooij, M and Voss, K and Xin, W and Weihs, B and Wolfe, D and Lizong, W and Xiaojun, Y and Yoder, MR and Young, N, Geomorphic and geologic controls of geohazards induced by Nepal's 2015 Gorkha earthquake, Science, 351, (6269) Article 8353. ISSN 0036-8075 (2015) [Refereed Article]

Copyright Statement

2016 American Association for the Advancement of Science. All rights Reserved.

DOI: doi:10.1126/science.aac8353

Abstract

The Gorkha earthquake (M 7.8) on 25 April 2015 and later aftershocks struck South Asia, killing ~9,000 and damaging a large region. Supported by a large campaign of responsive satellite data acquisitions over the earthquake disaster zone, our team undertook a satellite image survey of the earthquakes' induced geohazards in Nepal and China and an assessment of the geomorphic, tectonic, and lithologic controls on quake-induced landslides. Timely analysis and communication aided response and recovery and informed decision makers. We mapped 4,312 co-seismic and post-seismic landslides. We also surveyed 491 glacier lakes for earthquake damage, but found only 9 landslide-impacted lakes and no visible satellite evidence of outbursts. Landslide densities correlate with slope, peak ground acceleration, surface downdrop, and specific metamorphic lithologies and large plutonic intrusions.

Item Details

Item Type:Refereed Article
Keywords:geohazards, Nepal, eathquake, Gorkha, landslides
Research Division:Earth Sciences
Research Group:Geology
Research Field:Tectonics
Objective Division:Environment
Objective Group:Natural Hazards
Objective Field:Natural Hazards in Mountain and High Country Environments
Author:Young, N (Mr Neal Young)
ID Code:107060
Year Published:2015
Web of Science® Times Cited:31
Deposited By:CRC-Antarctic Climate & Ecosystems
Deposited On:2016-03-03
Last Modified:2017-11-02
Downloads:0

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