气候变化领域集成服务门户(CCPortal): Post-large earthquake seismic activities mediated by aseismic deformation processes

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DOI	10.1016/j.epsl.2019.115870
	Post-large earthquake seismic activities mediated by aseismic deformation processes
	Gualandi A.; Liu Z.; Rollins C.
发表日期	2020
ISSN	0012821X
卷号	530
英文摘要	Two aseismic deformation processes are commonly invoked to explain the transient geodetic surface displacements that follow a major earthquake: afterslip and viscoelastic relaxation. Both induce time dependent stress variations in the crust, potentially affecting aftershock occurrence. However, the two mechanisms' relative impacts on crustal deformation and seismicity remain unclear. We find for the case of the 2010 Mw 7.2 El Mayor-Cucapah (EMC) earthquake not only that afterslip likely drove clustered seismicity after the earthquake, but also that long-range earthquake interactions were likely modulated by viscoelastic relaxation at large scales in space (>5 times the fault rupture length) and time (>7 yr). This has important implications for the study of the “seismic cycle” and for seismic hazard estimation, since post-seismic deformation related to a single Mw 7.2 earthquake affects interseismic velocities and regional seismicity rates for more than a decade. © 2019 Elsevier B.V.
关键词	aftershocks afterslip geodetic time series analysis seismic clustering variational Bayesian independent component analysis viscoelastic relaxation
英文关键词	Deformation; Geodesy; Independent component analysis; Time series analysis; Viscoelasticity; aftershocks; afterslip; seismic clustering; Variational bayesian; Viscoelastic relaxation; Earthquakes; aftershock; Bayesian analysis; crustal deformation; earthquake event; seismic hazard; seismicity; time series analysis
语种	英语
来源期刊	Earth and Planetary Science Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/202622
作者单位	National Aeronautics and Space Administration, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Department of Earth and Environmental Sciences, Michigan State University, United States
推荐引用方式 GB/T 7714	Gualandi A.,Liu Z.,Rollins C.. Post-large earthquake seismic activities mediated by aseismic deformation processes[J],2020,530.
APA	Gualandi A.,Liu Z.,&Rollins C..(2020).Post-large earthquake seismic activities mediated by aseismic deformation processes.Earth and Planetary Science Letters,530.
MLA	Gualandi A.,et al."Post-large earthquake seismic activities mediated by aseismic deformation processes".Earth and Planetary Science Letters 530(2020).