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High-resolution seismic tomography of the 2015 M(w)7.8 Gorkha earthquake, Nepal: Evidence for the crustal tearing of the Himalayan rift
Pei, SP (Pei, Shunping); Liu, HB (Liu, Hongbing); Bai, L (Bai, Ling); Liu, YB (Liu, Yanbing); Sun, Q (Sun, Quan); Pei, SP
Source PublicationGEOPHYSICAL RESEARCH LETTERS
2016
Volume43Issue:17Pages:9045-9052
DOI10.1002/2016GL069808
AbstractThe M(w)7.8 Gorkha earthquake struck Nepal and ruptured the boundary between the Indian and Eurasian plates. We conducted 2-D Pg wave tomography to clarify the seismogenic structure and try to understand causal mechanisms for this large earthquake, using the aftershock data recorded by 15 broadband seismic stations located near the China-Nepal border. Our high-resolution results show that coseismic slip area of the main shock is consistent with the high P wave velocity anomaly, and the region of maximum slip has a larger area with higher velocity than the region of initial slip, possibly resulting in the dominant low-frequency radiation of energy observed after the dominant high-frequency radiation of energy in the source rupture process. The boundary between these regions of contrasting high and low seismic velocity anomalies suggests a potential crustal tearing at the southern end of the Tangra Yum Co Rift, possibly resulting from different thrust speeds in the Greater Himalaya.
Subject Area普通生物学
WOS IDWOS:000385357200028
Language英语
Indexed BySCI
KeywordVelocity Structure Yushu Earthquake Beneath Southern Tibet Constraints Aftershocks Kathmandu Boundary Qinghai Thrust
Cooperation Status国内
Department生态
SubtypeArticle
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Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/7606
Collection图书馆
Corresponding AuthorPei, SP
AffiliationChinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Pei, SP ,Liu, HB ,Bai, L ,et al. High-resolution seismic tomography of the 2015 M(w)7.8 Gorkha earthquake, Nepal: Evidence for the crustal tearing of the Himalayan rift[J]. GEOPHYSICAL RESEARCH LETTERS,2016,43(17):9045-9052.
APA Pei, SP ,Liu, HB ,Bai, L ,Liu, YB ,Sun, Q ,&Pei, SP.(2016).High-resolution seismic tomography of the 2015 M(w)7.8 Gorkha earthquake, Nepal: Evidence for the crustal tearing of the Himalayan rift.GEOPHYSICAL RESEARCH LETTERS,43(17),9045-9052.
MLA Pei, SP ,et al."High-resolution seismic tomography of the 2015 M(w)7.8 Gorkha earthquake, Nepal: Evidence for the crustal tearing of the Himalayan rift".GEOPHYSICAL RESEARCH LETTERS 43.17(2016):9045-9052.
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