globalchange  > 气候变化与战略
DOI: 10.1016/j.epsl.2019.115870
论文题名:
Post-large earthquake seismic activities mediated by aseismic deformation processes
作者: Gualandi A.; Liu Z.; Rollins C.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2020
卷: 530
语种: 英语
中文关键词: 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
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.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165000
Appears in Collections:气候变化与战略

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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

Recommended Citation:
Gualandi A.,Liu Z.,Rollins C.. Post-large earthquake seismic activities mediated by aseismic deformation processes[J]. Earth and Planetary Science Letters,2020-01-01,530
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