DOI: 10.1002/2013GL058598
论文题名: Splay fault triggering by great subduction earthquakes inferred from finite element models
作者: Li S. ; Moreno M. ; Rosenau M. ; Melnick D. ; Oncken O.
刊名: Geophysical Research Letters
ISSN: 0094-10426
EISSN: 1944-10157
出版年: 2014
卷: 41, 期: 2 起始页码: 385
结束页码: 391
语种: 英语
英文关键词: earthquake deformation
; faulting behavior
; FEM models
; splay faults
; subduction zone earthquakes
; tsunami hazards
Scopus关键词: Earthquakes
; Finite element method
; Friction
; Hazards
; Tsunamis
; FEM models
; Frictional properties
; Frictional strength
; Megathrust earthquakes
; Normal displacement
; Subduction earthquakes
; Subduction-zone earthquakes
; Tsunami hazards
; Faulting
; deformation
; dip
; finite element method
; friction
; hazard assessment
; subduction zone
; thrust
; tsunami
英文摘要: We have investigated the influence that megathrust earthquake slip has on the activation of splay faults using a 2-D finite element method (FEM), taking into account the effects of gravity and variations in the frictional strength properties of splay faults. We simulated both landward-dipping and seaward-dipping splay fault geometries, and imposed depth-variable slip distributions of subduction events. Our results indicate that the two types of splay fault exhibit a similar behavior, with variations in frictional properties along the faults affecting only the seismic magnitude. The triggering process is controlled by a critical depth. Megathrust slip concentrated at depths shallower than the critical depth will favor normal displacement, while megathrust slip concentrated at depths deeper than the critical depth is likely to result in reverse motion. Our results thus provide a useful tool for predicting the activation of secondary faults and may have direct implications for tsunami hazard research. ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893172306&doi=10.1002%2f2013GL058598&partnerID=40&md5=3d7fdc623ef7222494b2660212c8e838
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7690
Appears in Collections: 气候减缓与适应
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作者单位: German Research Centre for Geosciences, Helmholtz Centre Potsdam, Potsdam, Germany
Recommended Citation:
Li S.,Moreno M.,Rosenau M.,et al. Splay fault triggering by great subduction earthquakes inferred from finite element models[J]. Geophysical Research Letters,2014-01-01,41(2).