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Geomorphic and Geologic Controls of Geohazards induced by Nepal's 2015 Gorkha EarthquakeThe Gorkha earthquake (Magnitude 7.8) on 25 April 2015 and later aftershocks struck South Asia, killing approx.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.
Document ID
20170003277
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Kargel, J. S.
(Arizona Univ. Tucson, AZ, United States)
Leonard, G. J.
(Arizona Univ. Tucson, AZ, United States)
Shugar, D. H.
(Washington Univ. Tacoma, WA, United States)
Haritashya, U.K.
(Dayton Univ. OH, United States)
Bevington, A.
(British Columbia Ministry of Forests Victoria, British Columbia, Canada)
Fielding, E. J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Fujita, K.
(Nagoya Univ. Nagoya, Japan)
Geertsema, M.
(British Columbia Ministry of Forests Victoria, British Columbia, Canada)
Miles, E. S.
(Cambridge Univ. United Kingdom)
Steiner, J.
(Eidgenoessische Technische Hochschule Zurich, Switzerland)
Anderson, E.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Bajracharya, S.
(International Centre for Integrated Mountain Development Kathmandu, Nepal)
Bawden, G. W.
(NASA Headquarters Washington, DC United States)
Kirschbaum, D.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Breashears, D. F.
(GlacierWorks Marblehead, MA, United States)
Byers, A.
(The Mountain Institute Elkins, WV, United States)
Collins, B.
(Geological Survey Menlo Park, CA, United States)
Dhital, M. R.
(Tribhuvan Univ. Kathmandu, Nepal)
Donnellan, A.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Evans, L.
(Victoria Univ. Victoria, British Columbia, Canada)
Geai, M. L.
(CVA Engineering Suresnes, France)
Glasscoe, M. T.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Green, D.
(NASA Headquarters Washington, DC United States)
Gurung, D. R.
(International Centre for Integrated Mountain Development Kathmandu, Nepal)
Heijenk, R.
(British Columbia Ministry of Forests Victoria, British Columbia, Canada)
Date Acquired
April 7, 2017
Publication Date
December 17, 2015
Publication Information
Publication: Science
Volume: 351
Issue: 6269
ISSN: 0036-8075
Subject Category
Geosciences (General)
Report/Patent Number
GSFC-E-DAA-TN41143
Distribution Limits
Public
Copyright
Other
Keywords
earthquake
Nepal
Gorkha
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