DOI: 10.1002/2015GL065308
论文题名: Ambient noise-based monitoring of seismic velocity changes associated with the 2014 Mw 6.0 South Napa earthquake
作者: Taira T. ; Brenguier F. ; Kong Q.
刊名: Geophysical Research Letters
ISSN: 0094-9594
EISSN: 1944-9325
出版年: 2015
卷: 42, 期: 17 起始页码: 6997
结束页码: 7004
语种: 英语
英文关键词: 2014 South Napa earthquake
; ambient seismic noise
; monitoring seismic velocity change
Scopus关键词: Acoustic noise
; Geophysics
; Seismic waves
; Seismology
; Velocity
; Ambient seismic noise
; Fracture damage
; Healing process
; Peak ground velocity
; Seismic velocities
; Spatial variability
; Temporal variation
; Velocity changes
; Earthquakes
; ambient air
; earthquake
; earthquake damage
; fracture
; seismic noise
; seismic velocity
; temporal variation
英文摘要: We perform an ambient noise-based monitoring to explore temporal variations of crustal seismic velocities before, during, and after the 24 August 2014 Mw 6.0 South Napa earthquake. A velocity drop of about 0.08% is observed immediately after the South Napa earthquake. Spatial variability of the velocity reduction is most correlated with the pattern of the peak ground velocity of the South Napa mainshock, which suggests that fracture damage in rocks induced by the dynamic strain is likely responsible for the coseismic velocity change. About 50% of the velocity reduction is recovered at the first 50 days following the South Napa mainshock. This postseismic velocity recovery may suggest a healing process of damaged rocks. ©2015. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84943303307&doi=10.1002%2f2015GL065308&partnerID=40&md5=4d69a69741656c80327cd27498226976
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9209
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: Berkeley Seismological Laboratory, University of California, Berkeley, CA, United States
Recommended Citation:
Taira T.,Brenguier F.,Kong Q.. Ambient noise-based monitoring of seismic velocity changes associated with the 2014 Mw 6.0 South Napa earthquake[J]. Geophysical Research Letters,2015-01-01,42(17).