DOI: 10.1002/2016GL068083
论文题名: The 2015 Gorkha earthquake: A large event illuminating the Main Himalayan Thrust fault
作者: Duputel Z. ; Vergne J. ; Rivera L. ; Wittlinger G. ; Farra V. ; Hetényi G.
刊名: Geophysical Research Letters
ISSN: 0094-9225
EISSN: 1944-8956
出版年: 2016
卷: 43, 期: 6 起始页码: 2517
结束页码: 2525
语种: 英语
英文关键词: 2015 Gorkha earthquake
; earthquake source observations
; fault geometry
; focal mechanism
; Main Himalayan Thrust
; receiver function
Scopus关键词: Faulting
; Geometry
; Geophysics
; Earthquake source observations
; Fault geometry
; Focal mechanism
; Main himalayan thrusts
; Receiver functions
; Earthquakes
; aftershock
; data set
; dip
; earthquake hypocenter
; earthquake rupture
; fault geometry
; fault zone
; focal mechanism
; frequency analysis
; geometry
; Gorkha earthquake 2015
; low velocity zone
; observational method
; source parameters
; three-dimensional modeling
; thrust fault
; Gandaki
; Gorkha
; Himalayas
; Nepal
英文摘要: The 2015 Gorkha earthquake sequence provides an outstanding opportunity to better characterize the geometry of the Main Himalayan Thrust (MHT). To overcome limitations due to unaccounted lateral heterogeneities, we perform Centroid Moment Tensor inversions in a 3-D Earth model for the main shock and largest aftershocks. In parallel, we recompute S-to-P and P-to-S receiver functions from the Hi-CLIMB data set. Inverted centroid locations fall within a low-velocity zone at 10-15 km depth and corresponding to the subhorizontal portion of the MHT that ruptured during the Gorkha earthquake. North of the main shock hypocenter, receiver functions indicate a north dipping feature that likely corresponds to the midcrustal ramp connecting the flat portion to the deep part of the MHT. Our analysis of the main shock indicates that long-period energy emanated updip of high-frequency radiation sources previously inferred. This frequency-dependent rupture process might be explained by different factors such as fault geometry and the presence of fluids. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977962765&doi=10.1002%2f2016GL068083&partnerID=40&md5=27e17563a1667281d24b994ff94f7c03
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10188
Appears in Collections: 科学计划与规划 气候变化与战略
There are no files associated with this item.
作者单位: IPGS-EOST, CNRS, Université de Strasbourg, Strasbourg, France
Recommended Citation:
Duputel Z.,Vergne J.,Rivera L.,et al. The 2015 Gorkha earthquake: A large event illuminating the Main Himalayan Thrust fault[J]. Geophysical Research Letters,2016-01-01,43(6).