DOI: 10.1002/2013GL056876
论文题名: Rupture history of the 2013 Mw 6.6 Lushan earthquake constrained with local strong motion and teleseismic body and surface waves
作者: Hao J. ; Ji C. ; Wang W. ; Yao Z.
刊名: Geophysical Research Letters
ISSN: 0094-8461
EISSN: 1944-8192
出版年: 2013
卷: 40, 期: 20 起始页码: 5371
结束页码: 5376
语种: 英语
英文关键词: low stress drop
; Lushan earthquake
; slip history
Scopus关键词: Apparent stress
; Intraplate earthquakes
; Longmenshan fault zone
; Low stress
; Seismic moment
; Strong motion
; Thrust faults
; Triangular shapes
; Drops
; Earthquakes
; Losses
; Surface waves
; Faulting
; asperity
; body wave
; earthquake damage
; earthquake event
; earthquake magnitude
; earthquake rupture
; fault zone
; intraplate process
; Lushan earthquake 2013
; seismic moment
; slip rate
; stress analysis
; strong motion
; teleseismic wave
; thrust fault
; waveform analysis
; China
; Jiangxi
; Longmenshan Fault Zone
; Lushan Mountains
; Sichuan
英文摘要: The rupture history of the 20 April 2013 Mw 6.6 Lushan (China) earthquake is constrained by inverting waveforms of local strong motion, teleseismic broadband body waves, and long-period surface waves. This earthquake ruptured a blind thrust fault oriented N210°E (along the Longmenshan fault zone) and dipping 40° to the NW. The inverted slip distribution is heterogeneous, dominated by a slip patch with a roughly right triangular shape, which spans a depth range of 5-20 km and accounts for two thirds of the total seismic moment (8.9 × 1018 N m). The rupture initiated roughly at the middle of the triangle's hypotenuse and, during the first 4 s, propagated mainly in along-strike and downdip directions, toward a peak slip of 1.2 m. Despite a large number of fatalities and economic loss, the estimated static and apparent stress drops of the Lushan earthquake are 1.5 MPa and 0.35 MPa, considerably low with respect to other similar intraplate earthquakes. Keypoints A right triangular shape asperity spanning a depth range of 5-20 km Along-strike rupture during 2-4 s enhances the damage to the southwest Stress drops of the Lushan earthquake are low for an intraplate earthquake ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84885544602&doi=10.1002%2f2013GL056876&partnerID=40&md5=baca76d542d7aa205ce925ecd5224dec
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5725
Appears in Collections: 气候减缓与适应
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作者单位: Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Hao J.,Ji C.,Wang W.,et al. Rupture history of the 2013 Mw 6.6 Lushan earthquake constrained with local strong motion and teleseismic body and surface waves[J]. Geophysical Research Letters,2013-01-01,40(20).