DOI: 10.1002/grl.50507
论文题名: Acoustic emissions document stress changes over many seismic cycles in stick-slip experiments
作者: Goebel T.H.W. ; Schorlemmer D. ; Becker T.W. ; Dresen G. ; Sammis C.G.
刊名: Geophysical Research Letters
ISSN: 0094-9026
EISSN: 1944-8757
出版年: 2013
卷: 40, 期: 10 起始页码: 2049
结束页码: 2054
语种: 英语
英文关键词: acoustic emission
; b value
; b value-stress relationship
; fault complexity
; stick-slip
; stress-drop
Scopus关键词: B value
; Earthquake recording
; Fault structure
; Large earthquakes
; Microseismic events
; Seismic hazard assessment
; Stress build-ups
; stress-drop
; Acoustic emissions
; Drops
; Earthquakes
; Slip forming
; Stick-slip
; Faulting
; earthquake epicenter
; experimental study
; fault slip
; hazard assessment
; seismic anisotropy
; statistical analysis
; stick-slip
英文摘要: The statistics of large earthquakes commonly involve large uncertainties due to the lack of long-term, robust earthquake recordings. Small-scale seismic events are abundant and can be used to examine variations in fault structure and stress. We report on the connection between stress and microseismic event statistics prior to the possibly smallest earthquakes: those generated in the laboratory. We investigate variations in seismic b value of acoustic emission events during the stress buildup and release on laboratory-created fault zones. We show that b values mirror periodic stress changes that occur during series of stick-slip events, and are correlated with stress over many seismic cycles. Moreover, the amount of b value increase associated with slip events indicates the extent of the corresponding stress drop. Consequently, b value variations can be used to approximate the stress state on a fault: a possible tool for the advancement of time-dependent seismic hazard assessment. © 2013 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879919232&doi=10.1002%2fgrl.50507&partnerID=40&md5=31249f85b587cf7100c4255846e064e7
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6290
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Department of Earth Sciences, University of Southern California, Los Angeles, CA, United States
Recommended Citation:
Goebel T.H.W.,Schorlemmer D.,Becker T.W.,et al. Acoustic emissions document stress changes over many seismic cycles in stick-slip experiments[J]. Geophysical Research Letters,2013-01-01,40(10).