DOI: 10.1002/grl.50962
论文题名: A slower fault may produce a smaller preseismic moment rate: Non-1/t f acceleration of moment rate during nucleation and dependency on the background slip rate
作者: Noda H. ; Nakatani M. ; Hori T.
刊名: Geophysical Research Letters
ISSN: 0094-8561
EISSN: 1944-8292
出版年: 2013
卷: 40, 期: 18 起始页码: 4850
结束页码: 4854
语种: 英语
英文关键词: dimensional analysis
; earthquakes
; nucleation
; numerical simulation
; preseismic moment release
; rate-and-state friction
Scopus关键词: Dimensional analysis
; Interplate earthquakes
; Intraplate earthquakes
; Large earthquakes
; preseismic moment release
; Rate-and-state frictions
; Three-dimensional numerical simulations
; Time to failure
; Computer simulation
; Faulting
; Friction
; Mathematical techniques
; Nucleation
; Numerical models
; Earthquakes
; acceleration
; amplitude
; earthquake engineering
; earthquake hypocenter
; fault
; friction
; nucleation
; numerical model
; seismic moment
; seismicity
; slip rate
; three-dimensional modeling
英文摘要: A recent global study has revealed that seismicity near the hypocenter prior to large earthquakes, which could be a proxy for preseismic moment rate, accelerates before interplate earthquakes, while it rarely does before intraplate earthquakes. Understanding the amplitude of preseismic deformation is important in assessing the possibility of its detection. For a class of rate-state friction laws without a characteristic speed-related parameter (e.g., aging law and slip law), a dimensional analysis has shown that if the moment rate increases more mildly than 1/tf where tf is the time-to-failure, then the amplitude of preseismic moment rate is smaller for a smaller quasistatic slip rate. Three-dimensional numerical simulations have revealed that the aging law yields 1/tf acceleration, while the slip law causes milder acceleration. If the latter is the case, faults with very low long-term slip rates (e.g., intraplate faults) may have very small preseismic moment rates. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84884480961&doi=10.1002%2fgrl.50962&partnerID=40&md5=2058ab9b7a455a33cd17ac4c9ad640be
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5825
Appears in Collections: 气候减缓与适应
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作者单位: Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology, 3173-25 Showa-machi, Kanazawa-ku, Yokohama, Kanagawa 236-0001, Japan
Recommended Citation:
Noda H.,Nakatani M.,Hori T.. A slower fault may produce a smaller preseismic moment rate: Non-1/t f acceleration of moment rate during nucleation and dependency on the background slip rate[J]. Geophysical Research Letters,2013-01-01,40(18).