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DOI | 10.1002/2017GL076031 |
An Adjoint Sensitivity Method Applied to Time Reverse Imaging of Tsunami Source for the 2009 Samoa Earthquake | |
Hossen, M. Jakir1,2; Gusman, Aditya1; Satake, Kenji1; Cummins, Phil R.3 | |
2018-01-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:2页码:627-636 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan; Bangladesh; Australia |
英文摘要 | We have previously developed a tsunami source inversion method based on Time Reverse Imaging and demonstrated that it is computationally very efficient and has the ability to reproduce the tsunami source model with good accuracy using tsunami data of the 2011 Tohoku earthquake tsunami. In this paper, we implemented this approach in the 2009 Samoa earthquake tsunami triggered by a doublet earthquake consisting of both normal and thrust faulting. Our result showed that the method is quite capable of recovering the source model associated with normal and thrust faulting. We found that the inversion result is highly sensitive to some stations that must be removed from the inversion. We applied an adjoint sensitivity method to find the optimal set of stations in order to estimate a realistic source model. We found that the inversion result is improved significantly once the optimal set of stations is used. In addition, from the reconstructed source model we estimated the slip distribution of the fault from which we successfully determined the dipping orientation of the fault plane for the normal fault earthquake. Our result suggests that the fault plane dip toward the northeast. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425514300017 |
WOS关键词 | 2011 TOHOKU EARTHQUAKE ; SURFACE DEFORMATION ; WAVE-FORMS ; INVERSION ; DISPERSION ; RUPTURE ; SPACE |
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/28769 |
专题 | 气候变化 |
作者单位 | 1.Univ Tokyo, Earthquake Res Inst, Bunkyo Ku, Tokyo, Japan; 2.BRAC Univ, Dept Math & Nat Sci, Dhaka, Bangladesh; 3.Australian Natl Univ, Res Sch Earth Sci, Acton, ACT, Australia |
推荐引用方式 GB/T 7714 | Hossen, M. Jakir,Gusman, Aditya,Satake, Kenji,et al. An Adjoint Sensitivity Method Applied to Time Reverse Imaging of Tsunami Source for the 2009 Samoa Earthquake[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(2):627-636. |
APA | Hossen, M. Jakir,Gusman, Aditya,Satake, Kenji,&Cummins, Phil R..(2018).An Adjoint Sensitivity Method Applied to Time Reverse Imaging of Tsunami Source for the 2009 Samoa Earthquake.GEOPHYSICAL RESEARCH LETTERS,45(2),627-636. |
MLA | Hossen, M. Jakir,et al."An Adjoint Sensitivity Method Applied to Time Reverse Imaging of Tsunami Source for the 2009 Samoa Earthquake".GEOPHYSICAL RESEARCH LETTERS 45.2(2018):627-636. |
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