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DOI | 10.1002/2017GL074528 |
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
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
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 |
推荐引用方式 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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