DOI: 10.1002/2016GL069808
论文题名: High-resolution seismic tomography of the 2015 Mw7.8 Gorkha earthquake, Nepal: Evidence for the crustal tearing of the Himalayan rift
作者: Pei S. ; Liu H. ; Bai L. ; Liu Y. ; Sun Q.
刊名: Geophysical Research Letters
ISSN: 0094-8678
EISSN: 1944-8409
出版年: 2016
卷: 43, 期: 17 起始页码: 9045
结束页码: 9052
语种: 英语
英文关键词: fault zone structure
; Gorkha earthquake
; high-resolution tomography
; north-south rift
Scopus关键词: Geophysics
; Seismic waves
; Seismology
; Wave propagation
; Broad-band seismic stations
; Fault zone structures
; High resolution seismic
; High-frequency radiation
; High-resolution tomography
; Low frequency radiation
; North-south rift
; Seismogenic structures
; Earthquakes
; aftershock
; coseismic process
; earthquake magnitude
; earthquake rupture
; Eurasian plate
; fault zone
; Gorkha earthquake 2015
; Indian plate
; P-wave
; rift zone
; seismic tomography
; seismotectonics
; slip
; spatial resolution
; wave velocity
; China
; Gandaki
; Gorkha
; Himalayas
; Nepal
英文摘要: The Mw7.8 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. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84987730580&doi=10.1002%2f2016GL069808&partnerID=40&md5=880eeb8c7b2db6e2626bc2a0dbbd892c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9641
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Key Laboratory of Continental Collision and Plateau Uplift, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Pei S.,Liu H.,Bai L.,et al. High-resolution seismic tomography of the 2015 Mw7.8 Gorkha earthquake, Nepal: Evidence for the crustal tearing of the Himalayan rift[J]. Geophysical Research Letters,2016-01-01,43(17).