DOI: 10.1002/grl.50776
论文题名: Interseismic coupling, stress evolution, and earthquake slip on the Sunda megathrust
作者: Nalbant S. ; McCloskey J. ; Steacy S. ; Nicbhloscaidh M. ; Murphy S.
刊名: Geophysical Research Letters
ISSN: 0094-8670
EISSN: 1944-8401
出版年: 2013
卷: 40, 期: 16 起始页码: 4204
结束页码: 4208
语种: 英语
英文关键词: coupling
; earthquake
; stress interaction
; subduction zone
; Sumatra
Scopus关键词: Coupling distribution
; Historical earthquakes
; Hypocentral locations
; Megathrust earthquakes
; Slip distribution
; Stress interaction
; Subduction zones
; Sumatra
; Couplings
; Earth sciences
; Geophysics
; Earthquakes
; earthquake epicenter
; instrumentation
; seismic anisotropy
; slip
; subduction zone
; thrust
; uncertainty analysis
英文摘要: The extent to which interseismic coupling controls the slip distribution of large megathrust earthquakes is unclear, with some authors proposing that it is the primary control and others suggesting that stress changes from previous earthquakes are of first-order importance. Here, we develop a detailed stress history of the Sunda megathrust, modified by coupling, and compare the correlation between slip and stress with that of slip versus coupling. We find that the slip distributions of recent earthquakes are more consistent with the stress field than with the coupling distributions but observe that in places, the stress pattern is strongly dependent on poorly constrained values of slip in historical earthquakes. We also find that of the 13 earthquakes in our study for which we have hypocentral locations, only two appear to have nucleated in areas of negative stress, and these locations correspond to large uncertainties in the slip distribution of pre-instrumental events. Key Points The stress history of the Sunda Trench is computed from 1797 to present Stress and earthquake slip is better correlated than coupling and slip Better methods of estimating pre-instrumental slip are required. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84881659212&doi=10.1002%2fgrl.50776&partnerID=40&md5=98092a4e310b5784a63cac2555ac8257
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5934
Appears in Collections: 气候减缓与适应
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作者单位: School of Environmental Sciences, University of Ulster, Coleraine, United Kingdom
Recommended Citation:
Nalbant S.,McCloskey J.,Steacy S.,et al. Interseismic coupling, stress evolution, and earthquake slip on the Sunda megathrust[J]. Geophysical Research Letters,2013-01-01,40(16).