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

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dc.contributor.authorKargel, J. S.
dc.contributor.authorLeonard, G. J.
dc.contributor.authorShugar, Dan H.
dc.contributor.authorHaritashya, U. K.
dc.contributor.authorBevington, A.
dc.contributor.authorFielding, E. J.
dc.contributor.authorFujita, K.
dc.contributor.authorGeertsema, M.
dc.contributor.authorMiles, E. S.
dc.date.accessioned2025-10-20T19:03:07Z
dc.date.available2025-10-20T19:03:07Z
dc.date.issued10.1126/science.aac8353
dc.description.abstractThe Gorkha earthquake (M 7.8) on 25 April 2015 and later aftershocks struck South Asia, killing
dc.identifier.doi9,000 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.
dc.identifier.urihttps://hdl.handle.net/1773/54371
dc.publisherScience
dc.subject12/16/2015
dc.titleGeomorphic and geologic controls of geohazards induced by Nepal's 2015 Gorkha earthquake

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