| DOI: | 10.1002/2013GL058184
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| 论文题名: | Is stress accumulating on the creeping section of the San Andreas fault? |
| 作者: | Johnson K.M.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8331
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| EISSN: | 1944-8062
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| 出版年: | 2013
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| 卷: | 40, 期:23 | | 起始页码: | 6101
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| 结束页码: | 6105
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| 语种: | 英语
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| 英文关键词: | fault creep
; interseismic coupling
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| Scopus关键词: | Creep rates
; Earthquake potential
; Fault creep
; Large earthquakes
; Physical model
; San Andreas fault
; Small area
; Stress accumulation
; Earthquakes
; Locks (fasteners)
; Slip forming
; Strike-slip faults
; Structural geology
; Fault slips
; creep
; earthquake
; earthquake rupture
; fault
; spatial distribution
; stick-slip
; stress
; California
; San Andreas
; United States
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| 英文摘要: | The creeping section of the San Andreas fault (CSAF) in central California is a proposed barrier to propagation of large earthquakes. Yet, recent studies show that the creeping section is not entirely uncoupled but is accumulating slip deficit at a rate equivalent to a Mw=7.2-7.4 earthquake every 150years. A critical piece to understanding earthquake potential on the CSAF is determining whether slip deficit is occurring with stress accumulation on stick-slip regions or without stress accumulation on stable-sliding regions shadowed by surrounding locked areas. We use a physical model to estimate the spatial distribution of locked, stress-accumulating areas of the fault constrained by surface creep rate measurements and GPS-derived velocities. We find that the area of the fault accumulating stress, if ruptured every 150years, would release slip equivalent to at most a Mw=6.75 earthquake, significantly less than the Mw=7.2-7.4, 150year equivalent total slip deficit rate. Key Points Only small areas of the creeping San Andreas fault is accumulating stress At most 40% of the total moment accumulation is on locked areas Locked areas would rupture in at most a M6.7 earthquake every 150 years ©2013. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84891608367&doi=10.1002%2f2013GL058184&partnerID=40&md5=f3933d60c0a7834177a823ba47f8ad66
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/5595
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Department of Geological Sciences, Indiana University, 1001 E. 10th St., Bloomington, IN 47405, United States
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| Recommended Citation: | |
Johnson K.M.. Is stress accumulating on the creeping section of the San Andreas fault?[J]. Geophysical Research Letters,2013-01-01,40(23).
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