DOI: 10.1002/2016GL070970
论文题名: Effects of dispersion in tsunami Green's functions and implications for joint inversion with seismic and geodetic data: A case study of the 2010 Mentawai Mw 7.8 earthquake
作者: Li L. ; Cheung K.F. ; Yue H. ; Lay T. ; Bai Y.
刊名: Geophysical Research Letters
ISSN: 0094-8416
EISSN: 1944-8147
出版年: 2016
卷: 43, 期: 21 起始页码: 11182
结束页码: 11191
语种: 英语
英文关键词: dispersion
; finite fault
; joint inversion
; Mentawai earthquake
; tsunami
Scopus关键词: Deformation
; Dispersion (waves)
; Earthquake effects
; Faulting
; Geodesy
; Geophysics
; Seismology
; Surface waters
; Surface waves
; Tsunamis
; Conventional approach
; Dispersive models
; Finite fault inversions
; Joint inversion
; Offshore earthquake
; Seafloor deformation
; Shallow water model
; Wave dispersion
; Earthquakes
英文摘要: Tsunami observations play an important role in resolving offshore earthquake slip distributions. Nondispersive shallow-water models are often used with a static initial sea surface pulse derived from seafloor deformation in computation of tsunami Green's functions. We compare this conventional approach with more advanced techniques based on a dispersive model with a static initial sea surface pulse and with the surface waves generated from kinematic seafloor deformation. These three sets of tsunami Green's functions are implemented in finite-fault inversions with and without seismic and geodetic data for the 2010 Mentawai Mw 7.8 tsunami earthquake. Seafloor excitation and wave dispersion produce more spread-out waveforms in the Green's functions leading to larger slip with more compact distribution through the inversions. The fit to the recorded tsunami and the deduced seismic moment, which reflects the displaced water volume, are relatively insensitive to the approach used for computing Green's functions. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84998785519&doi=10.1002%2f2016GL070970&partnerID=40&md5=afbabb241f095240d0b54d4cbde6a1db
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9379
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: Department of Ocean and Resources Engineering, University of Hawai‘i at Mānoa, Honolulu, HI, United States
Recommended Citation:
Li L.,Cheung K.F.,Yue H.,et al. Effects of dispersion in tsunami Green's functions and implications for joint inversion with seismic and geodetic data: A case study of the 2010 Mentawai Mw 7.8 earthquake[J]. Geophysical Research Letters,2016-01-01,43(21).