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Lateral variation of the Main Himalayan Thrust controls the rupture length of the 2015 Gorkha earthquake in Nepal
Bai, L (Bai, Ling)1; Klemperer, SL (Klemperer, Simon L.)2; Mori, J (Mori, James)3; Karplus, MS (Karplus, Marianne S.)4; Ding, L (Ding, Lin)1; Liu, HB (Liu, Hongbing)1; Li, GH (Li, Guohui)1; Song, BW (Song, Bowen)1; Dhakal, S (Dhakal, Sanjev)1
Source PublicationSCIENCE ADVANCES
2019
Volume5Issue:6Pages:eaav0723
DOI10.1126/sciadv.aav0723
Abstract

The Himalaya orogenic belt produces frequent large earthquakes that affect population centers along a length of over 2500 km. The 2015 Gorkha, Nepal earthquake (M-w 7.8) ruptured the Main Himalayan Thrust (MHT) and allows direct measurements of the behavior of the continental collision zone. We study the MHT using seismic waveforms recorded by local stations that completely cover the aftershock zone. The MHT exhibits clear lateral variation along geologic strike, with the Lesser Himalayan ramp having moderate dip on the MHT beneath the mainshock area and a flatter and deeper MHT beneath the eastern end of the aftershock zone. East of the aftershock zone, seismic wave speed increases at MHT depths, perhaps due to subduction of an Indian basement ridge. A similar magnitude wave speed change occurs at the western end of the aftershock zone. These gross morphological structures of the MHT controlled the rupture length of the Gorkha earthquake.

Subject AreaGeosciences
WOS IDWOS:000473798500017
Language英语
Indexed BySCI
KeywordCollision Zone Beneath Inversion Geometry Sequence China India Ramp
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
Cooperation Status国际
ISSN2375-2548
Department大陆碰撞与高原隆升重点实验室
URL查看原文
PublisherAMER ASSOC ADVANCEMENT SCIENCE
SubtypeArticle
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Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9282
Collection图书馆
Corresponding AuthorBai, L (Bai, Ling); Klemperer, SL (Klemperer, Simon L.)
Affiliation1.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100101, Peoples R China;
2.Stanford Univ, Dept Geophys, Stanford, CA 94305 USA;
3.Kyoto Univ, Disaster Prevent Res Inst, Uji, Kyoto 6110011, Japan;
4.Univ Texas El Paso, Dept Geol Sci, El Paso, TX 79968 USA.
Recommended Citation
GB/T 7714
Bai, L ,Klemperer, SL ,Mori, J ,et al. Lateral variation of the Main Himalayan Thrust controls the rupture length of the 2015 Gorkha earthquake in Nepal[J]. SCIENCE ADVANCES,2019,5(6):eaav0723.
APA Bai, L .,Klemperer, SL .,Mori, J .,Karplus, MS .,Ding, L .,...&Dhakal, S .(2019).Lateral variation of the Main Himalayan Thrust controls the rupture length of the 2015 Gorkha earthquake in Nepal.SCIENCE ADVANCES,5(6),eaav0723.
MLA Bai, L ,et al."Lateral variation of the Main Himalayan Thrust controls the rupture length of the 2015 Gorkha earthquake in Nepal".SCIENCE ADVANCES 5.6(2019):eaav0723.
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