DOI: 10.1002/grl.50691
论文题名: Source duration of stress and water-pressure induced seismicity derived from experimental analysis of P wave pulse width in granite
作者: Masuda K.
刊名: Geophysical Research Letters
ISSN: 0094-8801
EISSN: 1944-8532
出版年: 2013
卷: 40, 期: 14 起始页码: 3567
结束页码: 3571
语种: 英语
英文关键词: acoustic emission
; pulse width
; source duration
; water-pressure induced
Scopus关键词: Confining pressures
; Experimental analysis
; Hypocentral distance
; Induced seismicity
; Pulsewidths
; Rupture velocities
; source duration
; water-pressure induced
; Acoustic emissions
; Fracture toughness
; Granite
; Seismic waves
; earthquake hypocenter
; earthquake rupture
; experimental study
; granite
; induced seismicity
; P-wave
; pressure effect
英文摘要: Pulse widths of P waves in granite, measured in the laboratory, were analyzed to investigate source durations of rupture processes for water-pressure induced and stress-induced microseismicity. Water was injected into a dry granite sample under constant axial stress of about 70% of fracture strength and a confining pressure of 40 MPa. After the effects of event size and hypocentral distance were removed from observed pulse widths, the ratio of the scaled source durations of water-pressure induced and stress-induced microseismicity was 0.52. The difference in the scaled source durations between water-pressure induced and stress-induced microseismicity suggests that water-pressure induced microseismicity involves a greater rupture velocity or a more equidimensional fault geometry than stress-induced microseismicity. These results suggest that pulse width analysis of P waveforms can be used to distinguish water-pressure induced events from those induced by regional stress and to characterize the faulting process. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880219259&doi=10.1002%2fgrl.50691&partnerID=40&md5=0819ae8c537755883a8d861476a99eb3
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6065
Appears in Collections: 气候减缓与适应
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作者单位: Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, AIST, Tsukuba Central 7, Tsukuba 305-8567c, Japan
Recommended Citation:
Masuda K.. Source duration of stress and water-pressure induced seismicity derived from experimental analysis of P wave pulse width in granite[J]. Geophysical Research Letters,2013-01-01,40(14).