DOI: 10.1002/grl.50977
论文题名: Rupture complexity of the Mw 8.3 sea of okhotsk earthquake: Rapid triggering of complementary earthquakes?
作者: Wei S. ; Helmberger D. ; Zhan Z. ; Graves R.
刊名: Geophysical Research Letters
ISSN: 0094-8476
EISSN: 1944-8207
出版年: 2013
卷: 40, 期: 19 起始页码: 5034
结束页码: 5039
语种: 英语
英文关键词: finite fault
; path calibration
; rupture velocity
; slab
; teleseismic
; triggering
Scopus关键词: Rupture process
; Rupture speed
; Rupture velocities
; Sea of Okhotsk
; slab
; Teleseismic
; Teleseismic P waveforms
; triggering
; Earthquakes
; Faulting
; aftershock
; earthquake event
; earthquake rupture
; fault zone
; rupture
; slip
; teleseismic wave
; waveform analysis
; Khabarovsk [Russian Federation]
; Okhotsk
; Russian Federation
英文摘要: We derive a finite slip model for the 2013 Mw 8.3 Sea of Okhotsk Earthquake (Z = 610 km) by inverting calibrated teleseismic P waveforms. The inversion shows that the earthquake ruptured on a 10° dipping rectangular fault zone (140 km × 50 km) and evolved into a sequence of four large sub-events (E1-E4) with an average rupture speed of 4.0 km/s. The rupture process can be divided into two main stages. The first propagated south, rupturing sub-events E1, E2, and E4. The second stage (E3) originated near E2 with a delay of 12 s and ruptured northward, filling the slip gap between E1 and E2. This kinematic process produces an overall slip pattern similar to that observed in shallow swarms, except it occurs over a compressed time span of about 30 s and without many aftershocks, suggesting that sub-event triggering for deep events is significantly more efficient than for shallow events. Key Points The earthquake was composed of two distinct rupture stages The northward rupture filled in the slip gap left behind form previous ruptures The earthquake ruptured on a 140 km × 50 km fault zone with rupture speed of ∼4 km/s ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84884849679&doi=10.1002%2fgrl.50977&partnerID=40&md5=21590105027070339bbb3919826a78b3
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5740
Appears in Collections: 气候减缓与适应
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作者单位: Seismological Laboratory, California Institute of Technology, MS 252-21, 1200 E. California Blvd., Pasadena, CA 91125, United States
Recommended Citation:
Wei S.,Helmberger D.,Zhan Z.,et al. Rupture complexity of the Mw 8.3 sea of okhotsk earthquake: Rapid triggering of complementary earthquakes?[J]. Geophysical Research Letters,2013-01-01,40(19).