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DOI | 10.1002/2017GL075307 |
Green's Function-Based Tsunami Data Assimilation: A Fast Data Assimilation Approach Toward Tsunami Early Warning | |
Wang, Yuchen1,2; Satake, Kenji1; Maeda, Takuto1; Gusman, Aditya Riadi1 | |
2017-10-28 | |
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:20 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan |
英文摘要 | We propose a new tsunami data assimilation approach based on Green's functions to reduce the computation time for tsunami early warning. Green's Function-based Tsunami Data Assimilation (GFTDA) forecasts the waveforms at points of interest (PoIs) by superposition of Green's functions between observation stations and PoIs. Unlike the previous assimilation approach, GFTDA does not require the calculation of the tsunami wavefield for the whole region during the assimilation process, because the Green's functions have been calculated in advance. The forecasted waveforms can be calculated by a simple matrix manipulation. The application to the tsunami waveforms recorded by the bottom pressure gauges of the Cascadia Initiative from the 2012 Haida Gwaii earthquake reveals that GFTDA achieves the same accuracy as the previous assimilation approach while reducing the time required to issue a valid tsunami warning. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000416761600024 |
WOS关键词 | HAIDA GWAII EARTHQUAKE |
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/26992 |
专题 | 气候变化 |
作者单位 | 1.Univ Tokyo, Earthquake Res Inst, Tokyo, Japan; 2.Univ Tokyo, Grad Sch Sci, Dept Earth & Planetary Sci, Tokyo, Japan |
推荐引用方式 GB/T 7714 | Wang, Yuchen,Satake, Kenji,Maeda, Takuto,et al. Green's Function-Based Tsunami Data Assimilation: A Fast Data Assimilation Approach Toward Tsunami Early Warning[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(20). |
APA | Wang, Yuchen,Satake, Kenji,Maeda, Takuto,&Gusman, Aditya Riadi.(2017).Green's Function-Based Tsunami Data Assimilation: A Fast Data Assimilation Approach Toward Tsunami Early Warning.GEOPHYSICAL RESEARCH LETTERS,44(20). |
MLA | Wang, Yuchen,et al."Green's Function-Based Tsunami Data Assimilation: A Fast Data Assimilation Approach Toward Tsunami Early Warning".GEOPHYSICAL RESEARCH LETTERS 44.20(2017). |
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