GSTDTAP  > 气候变化
DOI10.1002/2017GL074528
Complete Implementation of the Green's Function Based Time Reverse Imaging and Sensitivity Analysis of Reversed Time Tsunami Source Inversion
Hossen, M. J.1,2; Cummins, P. R.3; Satake, K.2
2017-10-16
发表期刊GEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
EISSN1944-8007
出版年2017
卷号44期号:19
文章类型Article
语种英语
国家Bangladesh; Japan; Australia
英文摘要

In recent studies, the Time Reverse Imaging (TRI) method has been implemented in tsunami science to estimate tsunami source models. A TRI algorithm called Green's Function Based Time Reverse Imaging (GFTRI) was previously developed to reconstruct the source model by using source inversion as a guide to appropriately scale time-reversed images of the tsunami source. In this article, we consider a more complete approach to source inversion using reversed time images of the tsunami source by considering cross correlations among Green's functions. As a consequence, the performance of the method improves significantly. We tested this new algorithm using data from the 2011 Japan tsunami. Our results show that the method is capable of extracting more details of the source and providing excellent waveform fits at all stations, including those not used in the source imaging. We have also studied the sensitivity analysis of reversed time tsunami source inversion and found that the method is less sensitive to the number of stations, once a minimum number of stations is utilized. Moreover, this new approach is able to estimate the tsunami source with reasonable accuracy using data available soon after an earthquake, which indicates that it has potential to be used in both near- and far-field tsunami forecasting.


英文关键词tsunami source inversion time reverse imaging complete GFTRI sensitivity analysis
领域气候变化
收录类别SCI-E
WOS记录号WOS:000413921300037
WOS关键词TOHOKU-OKI EARTHQUAKE ; ACOUSTICS ; DISPERSION ; FORECAST ; RUPTURE ; SLIP
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/27404
专题气候变化
作者单位1.BRAC Univ, Dept Math & Nat Sci, Dhaka, Bangladesh;
2.Univ Tokyo, Earthquake Res Inst, Tokyo, Japan;
3.Australian Natl Univ, Res Sch Earth Sci, Acton, ACT, Australia
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GB/T 7714
Hossen, M. J.,Cummins, P. R.,Satake, K.. Complete Implementation of the Green's Function Based Time Reverse Imaging and Sensitivity Analysis of Reversed Time Tsunami Source Inversion[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(19).
APA Hossen, M. J.,Cummins, P. R.,&Satake, K..(2017).Complete Implementation of the Green's Function Based Time Reverse Imaging and Sensitivity Analysis of Reversed Time Tsunami Source Inversion.GEOPHYSICAL RESEARCH LETTERS,44(19).
MLA Hossen, M. J.,et al."Complete Implementation of the Green's Function Based Time Reverse Imaging and Sensitivity Analysis of Reversed Time Tsunami Source Inversion".GEOPHYSICAL RESEARCH LETTERS 44.19(2017).
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