DOI: 10.1002/grl.50808
论文题名: A deep outer-rise reverse-fault earthquake immediately triggered a shallow normal-fault earthquake: The 7 December 2012 off-Sanriku earthquake (M W 7.3)
作者: Harada T. ; Murotani S. ; Satake K.
刊名: Geophysical Research Letters
ISSN: 0094-8667
EISSN: 1944-8398
出版年: 2013
卷: 40, 期: 16 起始页码: 4214
结束页码: 4219
语种: 英语
英文关键词: earthquake triggering
; finite-fault slip model
; outer-rise earthquake
; static change in the Δ
; CFF
; teleseismic body-wave analysis
; the 2011 Tohoku earthquake
Scopus关键词: 2011 tohoku earthquakes
; Earthquake triggering
; Outer-rise earthquakes
; Slip model
; Teleseismic
; Fault slips
; Earthquakes
; body wave
; Coulomb criterion
; earthquake epicenter
; earthquake event
; earthquake magnitude
; earthquake rupture
; earthquake trigger
; fault slip
; normal fault
; reverse fault
; teleseismic wave
; Tohoku earthquake 2011
; Honshu
; Iwate
; Japan
; Japan Trench
; Pacific Ocean
; Sanriku
; Tohoku
英文摘要: Teleseismic body wave analysis revealed that the 7 December 2012 off-Sanriku earthquake (MW 7.3) at the outer rise of Japan Trench consisted of two successive subevents. The first subevent with reverse-fault mechanism (Event 1, MW 7.1) at 56 km depth was followed by, approximately 20 s later, the second subevent with normal-fault mechanism (Event 2, MW 7.2) at 6 km depth. Finite-fault slip models show that the slip of Event 1 was concentrated around the initial rupture point with the maximum of 2.7 m and that Event 2 had two asperities with the maximum of 4.5 m at both sides of the initial rupture point. The static Coulomb Failure Function analyses suggested that Event 1 triggered Event 2 and that both subevents were promoted by the 2011 Tohoku earthquake (MW 9.1). Key Points The 2012 Off-Sanriku event consisted of reverse- and normal-fault sub-events The reverse-fault sub-event immediately triggered normal-fault sub-event The 2011 Tohoku earthquake promoted both sub-events The 2012 Off-Sanriku event consisted of reverse- and normal-fault sub-events The reverse-fault sub-event immediately triggered normal-fault sub-event The 2011 Tohoku earthquake promoted both sub-events. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84882441923&doi=10.1002%2fgrl.50808&partnerID=40&md5=4754bc3e974b1ecb6570efcabdd9a4e3
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5931
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Earthquake Research Institute, University of Tokyo, Yayoi 1-1-1, Bunkyo-Ku, Tokyo, 113-0032, Japan
Recommended Citation:
Harada T.,Murotani S.,Satake K.. A deep outer-rise reverse-fault earthquake immediately triggered a shallow normal-fault earthquake: The 7 December 2012 off-Sanriku earthquake (M W 7.3)[J]. Geophysical Research Letters,2013-01-01,40(16).