DOI: 10.1002/2014GL060624
论文题名: Coseismic velocity change associated with the 2011 Van earthquake (M7.1): Crustal response to a major event
作者: Acarel D. ; Bulut F. ; Bohnhoff M. ; Kartal R.
刊名: Geophysical Research Letters
ISSN: 0094-9978
EISSN: 1944-9709
出版年: 2014
卷: 41, 期: 13 起始页码: 4519
结束页码: 4526
语种: 英语
英文关键词: 2011 Van earthquake/Turkey
; ambient noise
; coseismic velocity change
Scopus关键词: Acoustic noise
; Drops
; Earthquakes
; Structural geology
; 2011 Van earthquake/Turkey
; Ambient noise
; Broadband station
; Close proximity
; Coseismic slips
; Frequency ranges
; Temporal resolution
; Velocity changes
; Velocity
英文摘要: Monitoring coseismic velocity changes is a major challenge, since the Earth crust has to be uniformly sampled at preseismic, coseismic, and postseismic stages using repeating active or natural sources. Here we investigate the crustal response to the 2011 Van/Turkey earthquake using ambient noise, which provides the best possible temporal resolution. Combined recordings from the nearest five broadband stations are analyzed for a time period of 6 months framing the main shock. We observe a coseismic velocity decrease of up to 0.76% in the vicinity of the main shock in the frequency range of 0.05-0.3 Hz. The velocity drop is largest at close proximity to the earthquake hypocenter and decreases systematically with distance. We also find a correlation between coseismic velocity decrease and the amount of coseismic slip on the rupture plane. The observed velocity drop shows the drastic response of the brittle crust in response to a major earthquake. Key Points A coseismic velocity change The 2011 Van earthquake Scaling between the velocity change and slip ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84903861810&doi=10.1002%2f2014GL060624&partnerID=40&md5=df46322bafcb2f0d7f2624f93651eb67
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7242
Appears in Collections: 气候减缓与适应
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作者单位: GFZ German Research Centre for Geosciences, Potsdam, Germany
Recommended Citation:
Acarel D.,Bulut F.,Bohnhoff M.,et al. Coseismic velocity change associated with the 2011 Van earthquake (M7.1): Crustal response to a major event[J]. Geophysical Research Letters,2014-01-01,41(13).