DOI: 10.1002/2016GL069145
论文题名: Constraining depth range of S wave velocity decrease after large earthquakes near Parkfield, California
作者: Wu C. ; Delorey A. ; Brenguier F. ; Hadziioannou C. ; Daub E.G. ; Johnson P.
刊名: Geophysical Research Letters
ISSN: 0094-9570
EISSN: 1944-9301
出版年: 2016
卷: 43, 期: 12 起始页码: 6129
结束页码: 6136
语种: 英语
英文关键词: central California
; noise interferometry
; temporal changes
Scopus关键词: Acoustic wave velocity
; Earthquakes
; Frequency bands
; Geophysics
; Phase velocity
; Rayleigh waves
; Surface waves
; Velocity
; Wave propagation
; California
; Cross-correlation function
; Large earthquakes
; Rayleigh-wave phase velocity
; Seismic recording
; Sensitivity kernels
; Surface wave inversion
; Temporal change
; Shear waves
英文摘要: We use noise correlation and surface wave inversion to measure the S wave velocity changes at different depths near Parkfield, California, after the 2003 San Simeon and 2004 Parkfield earthquakes. We process continuous seismic recordings from 13 stations to obtain the noise cross-correlation functions and measure the Rayleigh wave phase velocity changes over six frequency bands. We then invert the Rayleigh wave phase velocity changes using a series of sensitivity kernels to obtain the S wave velocity changes at different depths. Our results indicate that the S wave velocity decreases caused by the San Simeon earthquake are relatively small (~0.02%) and access depths of at least 2.3 km. The S wave velocity decreases caused by the Parkfield earthquake are larger (~0.2%), and access depths of at least 1.2 km. Our observations can be best explained by material damage and healing resulting mainly from the dynamic stress perturbations of the two large earthquakes. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977547773&doi=10.1002%2f2016GL069145&partnerID=40&md5=80882f9aaaf822d7fb6d652f6ad6b4aa
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10533
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: Center of Earthquake Research and Information, University of Memphis, Memphis, TN, United States
Recommended Citation:
Wu C.,Delorey A.,Brenguier F.,et al. Constraining depth range of S wave velocity decrease after large earthquakes near Parkfield, California[J]. Geophysical Research Letters,2016-01-01,43(12).