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Faulting structure above the Main Himalayan Thrust as shown by relocated aftershocks of the 2015 Mw7.8 Gorkha, Nepal, earthquake

dc.contributor.authorBai, Ling
dc.contributor.authorLiu, Hongbing
dc.contributor.authorRitsema, Jeroen
dc.contributor.authorMori, James
dc.contributor.authorZhang, Tianzhong
dc.contributor.authorIshikawa, Yuzo
dc.contributor.authorLi, Guohui
dc.date.accessioned2017-01-10T19:10:41Z
dc.date.available2017-03-01T14:41:59Zen
dc.date.issued2016-01-28
dc.identifier.citationBai, Ling; Liu, Hongbing; Ritsema, Jeroen; Mori, James; Zhang, Tianzhong; Ishikawa, Yuzo; Li, Guohui (2016). "Faulting structure above the Main Himalayan Thrust as shown by relocated aftershocks of the 2015 Mw7.8 Gorkha, Nepal, earthquake." Geophysical Research Letters 43(2): 637-642.
dc.identifier.issn0094-8276
dc.identifier.issn1944-8007
dc.identifier.urihttps://hdl.handle.net/2027.42/135634
dc.description.abstractThe 25 April 2015, Mw7.8 Gorkha, Nepal, earthquake ruptured a shallow section of the Indian‐Eurasian plate boundary by reverse faulting with NNE‐SSW compression, consistent with the direction of current Indian‐Eurasian continental collision. The Gorkha main shock and aftershocks were recorded by permanent global and regional arrays and by a temporary local broadband array near the China‐Nepal border deployed prior to the Gorkha main shock. We relocate 272 earthquakes with Mw>3.5 by applying a multiscale double‐difference earthquake relocation technique to arrival times of direct and depth phases recorded globally and locally. We determine a well‐constrained depth of 18.5 km for the main shock hypocenter which places it on the Main Himalayan Thrust (MHT). Many of the aftershocks at shallower depths illuminate faulting structure in the hanging wall with dip angles that are steeper than the MHT. This system of thrust faults of the Lesser Himalaya may accommodate most of the elastic strain of the Himalayan orogeny.Key PointsWe relocate the 2015 Gorkha earthquakes using teleseismic and regional waveformsThe main shock is located on the horizontal Main Himalaya Thrust (MHT) at a depth of 18.5 kmAftershocks show faulting structure in the hanging wall above the MHT
dc.publisherWiley Periodicals, Inc.
dc.subject.otherGorkha earthquake
dc.subject.otherearthquake relocation
dc.subject.otherMain Himalayan Thrust
dc.subject.othercontinental collision zone
dc.subject.otherhanging wall structure
dc.titleFaulting structure above the Main Himalayan Thrust as shown by relocated aftershocks of the 2015 Mw7.8 Gorkha, Nepal, earthquake
dc.typeArticleen_US
dc.rights.robotsIndexNoFollow
dc.subject.hlbsecondlevelGeological Sciences
dc.subject.hlbtoplevelScience
dc.description.peerreviewedPeer Reviewed
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/135634/1/grl53895.pdf
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/135634/2/grl53895_am.pdf
dc.identifier.doi10.1002/2015GL066473
dc.identifier.sourceGeophysical Research Letters
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dc.owningcollnameInterdisciplinary and Peer-Reviewed


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