DOI: 10.1002/2015GL066473
论文题名: Faulting structure above the Main Himalayan Thrust as shown by relocated aftershocks of the 2015 Mw7.8 Gorkha, Nepal, earthquake
作者: Bai L. ; Liu H. ; Ritsema J. ; Mori J. ; Zhang T. ; Ishikawa Y. ; Li G.
刊名: Geophysical Research Letters
ISSN: 0094-9474
EISSN: 1944-9205
出版年: 2016
卷: 43, 期: 2 起始页码: 637
结束页码: 642
语种: 英语
英文关键词: continental collision zone
; earthquake relocation
; Gorkha earthquake
; hanging wall structure
; Main Himalayan Thrust
Scopus关键词: Faulting
; Geophysics
; Broadband arrays
; Continental collisions
; Double differences
; Earthquake relocation
; Faulting structures
; Main himalayan thrusts
; Reverse faulting
; Wall structure
; Earthquakes
; aftershock
; continental collision
; earthquake hypocenter
; Eurasian plate
; Gorkha earthquake 2015
; hanging wall
; Himalayan orogeny
; Indian plate
; plate boundary
; reverse fault
; thrust
; Gandaki
; Gorkha
; Himalayas
; Nepal
英文摘要: The 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. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84958073484&doi=10.1002%2f2015GL066473&partnerID=40&md5=d03feaa6c766f295c18ec7a08300cef4
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10437
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:
Bai L.,Liu H.,Ritsema J.,et al. Faulting structure above the Main Himalayan Thrust as shown by relocated aftershocks of the 2015 Mw7.8 Gorkha, Nepal, earthquake[J]. Geophysical Research Letters,2016-01-01,43(2).