DOI: 10.1002/2013GL057919
论文题名: Are scale-invariant stress orientations related to seismicity rates near the San Andreas fault?
作者: Davidsen J. ; Schumann A.Y. ; Naylor M.
刊名: Geophysical Research Letters
ISSN: 0094-8312
EISSN: 1944-8043
出版年: 2013
卷: 40, 期: 23 起始页码: 6074
结束页码: 6078
语种: 英语
英文关键词: crustal stress
; seismicity
Scopus关键词: Crustal stress
; Geographic location
; San Andreas fault
; Scale invariance
; Scale-invariant
; seismicity
; Stress orientations
; Stress perturbations
; Earth sciences
; Geophysics
; Strike-slip faults
; amplitude
; crust
; earthquake
; fault
; seismicity
; stress
; California
; San Andreas
; United States
英文摘要: Based on an analysis of the direction of maximum horizontal compressive stress as a function of depth as observed at different scientific wells along the San Andreas fault, it has recently been suggested that the scale-invariant fluctuations in the stress orientation over intervals from tens of centimeters to several kilometers are directly related to the local earthquake magnitude-frequency statistics. Here we mathematically analyze the possibility of such a relationship and show that the magnitude-frequency statistics alone is insufficient to explain the scaling of the stress orientation fluctuations. While stress perturbations caused by slip on adjacent faults of various sizes can still be responsible for these fluctuations, the average amplitude of the induced changes in the orientation would have to increase nonlinearly with the fault size. As the example of two research wells near the San Andreas fault also shows, the specific nonlinear form would have to depend sensitively on the specific geographic location. We conclude that the observed scale-invariant fluctuations in the stress orientation are more likely a consequence of a combination of local seismicity rates and the specific local fault structure. Key Points Scale-invariance in stress orientations is not due to seismicity rates alone ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84889034517&doi=10.1002%2f2013GL057919&partnerID=40&md5=6983000534a5dac14816a3e23308c986
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5576
Appears in Collections: 气候减缓与适应
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作者单位: Complexity Science Group, Department of Physics and Astronomy, University of Calgary, 2500 University Dr. NW, Calgary, AB T2N 1N4, Canada
Recommended Citation:
Davidsen J.,Schumann A.Y.,Naylor M.. Are scale-invariant stress orientations related to seismicity rates near the San Andreas fault?[J]. Geophysical Research Letters,2013-01-01,40(23).