DOI: 10.1002/2015GL066657
论文题名: Multiarray rupture imaging of the devastating 2015 Gorkha, Nepal, earthquake sequence
作者: Zhang H. ; Van Der Lee S. ; Ge Z.
刊名: Geophysical Research Letters
ISSN: 0094-9449
EISSN: 1944-9180
出版年: 2016
卷: 43, 期: 2 起始页码: 584
结束页码: 591
语种: 英语
英文关键词: 2015 Nepal earthquake
; depth-dependent rupture velocity
; multiarray backprojection
; rupture process
; stress heterogeneity
; Tibetan Plateau
Scopus关键词: Faulting
; Geophysics
; Seismic waves
; Back-projection
; Back-projection methods
; Earthquake sequences
; Main himalayan thrusts
; Rupture process
; Rupture propagation
; Rupture velocities
; Tibetan Plateau
; Earthquakes
; aftershock
; dip
; earthquake event
; earthquake rupture
; imaging method
; in situ stress
; P-wave
; seismic velocity
; teleseismic wave
; Alaska
; Australia
; China
; Europe
; Gandaki
; Gorkha
; Nepal
; Qinghai-Xizang Plateau
; United States
英文摘要: A rapid, robust multiarray backprojection method was applied to image the rupture pattern of the 2015 Gorkha, Nepal Mw7.8 main shock and its Mw7.3 aftershock. Backprojected teleseismic P wave trains from three regional seismic arrays in Europe, Australia, and Alaska show that both earthquakes ruptured unilaterally and primarily eastward, with rupture speeds potentially decreasing with depth. The rupture of the main shock first extended ESEward at ∼3.5 km/s over ∼120 km, with later rupture propagation further downdip on the eastern segment at ∼2.1 km/s. The aftershock ruptured the fault SE of the main shock's ruptured plane. It began to rupture updipward for ∼20 km at a speed around 1.2 km/s, then it may have accelerated to 3.5 km/s for the next 50 km. The apparent depth-dependent rupture speeds of the two earthquakes may be caused by along-dip heterogeneities in fault strength, with a higher stress concentration on the updip part of the Nepalese Main Himalayan Thrust. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955506872&doi=10.1002%2f2015GL066657&partnerID=40&md5=2a648ef105880fc0053f16cacd69ad01
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10412
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: Department of Earth and Planetary Sciences, Northwestern University, Evanston, IL, United States
Recommended Citation:
Zhang H.,Van Der Lee S.,Ge Z.. Multiarray rupture imaging of the devastating 2015 Gorkha, Nepal, earthquake sequence[J]. Geophysical Research Letters,2016-01-01,43(2).