DOI: 10.1002/2014GL062730
论文题名: Earthquake hypocenters and focal mechanisms in central Oklahoma reveal a complex system of reactivated subsurface strike-slip faulting
作者: McNamara D.E. ; Benz H.M. ; Herrmann R.B. ; Bergman E.A. ; Earle P. ; Holland A. ; Baldwin R. ; Gassner A.
刊名: Geophysical Research Letters
ISSN: 0094-8746
EISSN: 1944-8477
出版年: 2015
卷: 42, 期: 8 起始页码: 2742
结束页码: 2749
语种: 英语
英文关键词: injection-induced earthquakes
; Oklahoma seismicity
; reactivated faulting
Scopus关键词: Earthquakes
; Faulting
; Hazards
; Strike-slip faults
; Crystalline basement
; Energy industry
; Multiple events
; Oklahoma
; Potential hazards
; Seismic station
; Source parameters
; Strike slip faulting
; Fault slips
; earthquake hypocenter
; earthquake prediction
; fault zone
; focal mechanism
; parameterization
; strike-slip fault
; Oklahoma [United States]
; United States
英文摘要: The sharp increase in seismicity over a broad region of central Oklahoma has raised concern regarding the source of the activity and its potential hazard to local communities and energy industry infrastructure. Since early 2010, numerous organizations have deployed temporary portable seismic stations in central Oklahoma in order to record the evolving seismicity. In this study, we apply a multiple-event relocation method to produce a catalog of 3639 central Oklahoma earthquakes from late 2009 through 2014. Regional moment tensor (RMT) source parameters were determined for 195 of the largest and best recorded earthquakes. Combining RMT results with relocated seismicity enabled us to determine the length, depth, and style of faulting occurring on reactivated subsurface fault systems. Results show that the majority of earthquakes occur on near-vertical, optimally oriented (NE-SW and NW-SE), strike-slip faults in the shallow crystalline basement. These are necessary first-order observations required to assess the potential hazards of individual faults in Oklahoma. ©2015. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929508598&doi=10.1002%2f2014GL062730&partnerID=40&md5=20830f0e2d470b6c86e8fd201ab4a0e8
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8362
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: U.S. Geological Survey, Denver, CO, United States
Recommended Citation:
McNamara D.E.,Benz H.M.,Herrmann R.B.,et al. Earthquake hypocenters and focal mechanisms in central Oklahoma reveal a complex system of reactivated subsurface strike-slip faulting[J]. Geophysical Research Letters,2015-01-01,42(8).