DOI: 10.1002/2014GL062604
论文题名: Fault slip distribution of the 2014 Iquique, Chile, earthquake estimated from ocean-wide tsunami waveforms and GPS data
作者: Gusman A.R. ; Murotani S. ; Satake K. ; Heidarzadeh M. ; Gunawan E. ; Watada S. ; Schurr B.
刊名: Geophysical Research Letters
ISSN: 0094-8963
EISSN: 1944-8694
出版年: 2015
卷: 42, 期: 4 起始页码: 1053
结束页码: 1060
语种: 英语
英文关键词: Chile earthquakes
; earthquake rupture process
; far-field tsunami waveforms
; joint inversion
; the 2014 Iquique earthquake
; tsunami delay correction
Scopus关键词: Earthquakes
; Global positioning system
; Green's function
; Iterative methods
; Seawater effects
; Tsunamis
; Chile earthquakes
; Crustal deformations
; Earthquake rupture process
; Joint inversion
; Multiple time windows
; Rupture velocities
; Wave forms
; Waveform inversion
; Fault slips
; coseismic process
; crustal deformation
; earthquake epicenter
; elastic property
; fault slip
; GPS
; rupture
; seismic moment
; spatial distribution
; spatiotemporal analysis
; teleseismic wave
; travel time
; tsunami event
; waveform analysis
; Chile
; Iquique
; Tarapaca
英文摘要: We applied a new method to compute tsunami Green's functions for slip inversion of the 1 April 2014 Iquique earthquake using both near-field and far-field tsunami waveforms. Inclusion of the effects of the elastic loading of seafloor, compressibility of seawater, and the geopotential variation in the computed Green's functions reproduced the tsunami traveltime delay relative to long-wave simulation and allowed us to use far-field records in tsunami waveform inversion. Multiple time window inversion was applied to tsunami waveforms iteratively until the result resembles the stable moment rate function from teleseismic inversion. We also used GPS data for a joint inversion of tsunami waveforms and coseismic crustal deformation. The major slip region with a size of 100km×40km is located downdip the epicenter at depth ~28 km, regardless of assumed rupture velocities. The total seismic moment estimated from the slip distribution is 1.24×1021Nm (Mw 8.0). ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84924902409&doi=10.1002%2f2014GL062604&partnerID=40&md5=de9be5c7f94e124caa820582c36b80f0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8579
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Earthquake Research Institute, University of Tokyo, Tokyo, Japan
Recommended Citation:
Gusman A.R.,Murotani S.,Satake K.,et al. Fault slip distribution of the 2014 Iquique, Chile, earthquake estimated from ocean-wide tsunami waveforms and GPS data[J]. Geophysical Research Letters,2015-01-01,42(4).