DOI: 10.1002/2016GL069931
论文题名: The 2 March 2016 Wharton Basin Mw 7.8 earthquake: High stress drop north-south strike-slip rupture in the diffuse oceanic deformation zone between the Indian and Australian Plates
作者: Lay T. ; Ye L. ; Ammon C.J. ; Dunham A. ; Koper K.D.
刊名: Geophysical Research Letters
ISSN: 0094-8810
EISSN: 1944-8541
出版年: 2016
卷: 43, 期: 15 起始页码: 7937
结束页码: 7945
语种: 英语
英文关键词: 2 March 2016 earthquake
; intraplate deformation
; strike-slip faulting
; Wharton Basin
Scopus关键词: Deformation
; Drops
; Earthquakes
; Faulting
; Geophysics
; Seismic waves
; Seismology
; Strike-slip faults
; Aftershock location
; Backprojections
; Deformation zone
; Great earthquake
; High frequency HF
; Intraplate earthquakes
; Strike slip faulting
; Wharton Basin
; Fault slips
; aftershock
; Australian plate
; crustal deformation
; earthquake magnitude
; earthquake rupture
; estimation method
; faulting
; fracture zone
; Indian plate
; intraplate process
; Love wave
; P-wave
; seismology
; strike-slip fault
; Indian Ocean
; Wharton Basin
英文摘要: The diffuse deformation zone between the Indian and Australian plates has hosted numerous major and great earthquakes during the seismological record, including the 11 April 2012 Mw 8.6 event, the largest recorded intraplate earthquake. On 2 March 2016, an Mw 7.8 strike-slip faulting earthquake occurred in the northwestern Wharton Basin, in a region bracketed by north-south trending fracture zones with no previously recorded large event nearby. Despite the large magnitude, only minor source finiteness is evident in aftershock locations or resolvable from seismic wave processing including high-frequency P wave backprojections and Love wave directivity analysis. Our analyses indicate that the event ruptured bilaterally on a north-south trending fault over a length of up to 70 km, with rupture speed of ≤ 2 km/s, and a total duration of ~35 s. The estimated stress drop, ~20 MPa, is high, comparable to estimates for other large events in this broad intraplate oceanic deformation zone. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84982947875&doi=10.1002%2f2016GL069931&partnerID=40&md5=4b8b278dbd049db4503c7d00f730a9ad
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9773
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, University of California, Santa Cruz, CA, United States
Recommended Citation:
Lay T.,Ye L.,Ammon C.J.,et al. The 2 March 2016 Wharton Basin Mw 7.8 earthquake: High stress drop north-south strike-slip rupture in the diffuse oceanic deformation zone between the Indian and Australian Plates[J]. Geophysical Research Letters,2016-01-01,43(15).