DOI: 10.1002/2014GL061644
论文题名: A 3-D spectral-element and frequency-wave number hybrid method for high-resolution seismic array imaging
作者: Tong P. ; Komatitsch D. ; Tseng T.-L. ; Hung S.-H. ; Chen C.-W. ; Basini P. ; Liu Q.
刊名: Geophysical Research Letters
ISSN: 0094-9666
EISSN: 1944-9397
出版年: 2014
卷: 41, 期: 20 起始页码: 7025
结束页码: 7034
语种: 英语
英文关键词: computational seismology
; seismic tomography
; wave propagation
Scopus关键词: Elastic waves
; Seismology
; Wave propagation
; Computational seismologies
; Local heterogeneity
; Receiver functions
; Scattering imaging
; Seismic tomography
; Spectral element method
; Threedimensional (3-d)
; Waveform inversion
; Numerical methods
; array
; computer simulation
; frequency analysis
; heterogeneity
; numerical model
; one-dimensional modeling
; resolution
; seismic tomography
; seismology
; subduction zone
; teleseismic wave
; wave propagation
; wave scattering
英文摘要: We present a three-dimensional (3-D) hybrid method that interfaces the spectral-element method (SEM) with the frequency-wave number (FK) technique to model the propagation of teleseismic plane waves beneath seismic arrays. The accuracy of the resulting 3-D SEM-FK hybrid method is benchmarked against semianalytical FK solutions for 1-D models. The accuracy of 2.5-D modeling based on 2-D SEM-FK hybrid method is also investigated through comparisons to this 3-D hybrid method. Synthetic examples for structural models of the Alaska subduction zone and the central Tibet crust show that this method is capable of accurately capturing interactions between incident plane waves and local heterogeneities. This hybrid method presents an essential tool for the receiver function and scattering imaging community to verify and further improve their techniques. These numerical examples also show the promising future of the 3-D SEM-FK hybrid method in high-resolution regional seismic imaging based on waveform inversions of converted/scattered waves recorded by seismic array. Key PointsThree-dimensional spectral-element and frequency-wave number (SEM-FK) hybrid methodsAccurate modeling of teleseismic converted and scattered wavesHigh-resolution teleseismic array analysis ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84911384749&doi=10.1002%2f2014GL061644&partnerID=40&md5=72a041a4390916b8c192c4d94b77fb85
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6930
Appears in Collections: 气候减缓与适应
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作者单位: Department of Physics, University of Toronto, Toronto, ON, Canada
Recommended Citation:
Tong P.,Komatitsch D.,Tseng T.-L.,et al. A 3-D spectral-element and frequency-wave number hybrid method for high-resolution seismic array imaging[J]. Geophysical Research Letters,2014-01-01,41(20).