Automated determination of magnitude and source length of large earthquakes using backprojection and P wave amplitudes
文献类型：期刊论文
| 作者 | Wang, Dun1,2; Kawakatsu, Hitoshi2; Zhuang, Jiancang3; Mori, Jim4; Maeda, Takuto2; Tsuruoka, Hiroshi2; Zhao, Xu5 |
| 刊名 | GEOPHYSICAL RESEARCH LETTERS
 |
| 出版日期 | 2017-06-16 |
| 卷号 | 44期号:11页码:5447-5456 |
| 关键词 | seismic array magnitude determination disaster mitigation |
| ISSN号 | 0094-8276 |
| DOI | 10.1002/2017GL073801 |
| 文献子类 | Article |
| 英文摘要 | Fast estimates of magnitude and source extent of large earthquakes are fundamental for disaster mitigation. However, resolving these estimates within 10-20min after origin time remains challenging. Here we propose a robust algorithm to resolve magnitude and source length of large earthquakes using seismic data recorded by regional arrays and global stations. We estimate source length and source duration by backprojecting seismic array data. Then the source duration and the maximum amplitude of the teleseismic P wave displacement waveforms are used jointly to estimate magnitude. We apply this method to 74 shallow earthquakes that occurred within epicentral distances of 30-85 degrees to Hi-net (2004-2014). The estimated magnitudes are similar to moment magnitudes estimated from W-phase inversions (U.S. Geological Survey), with standard deviations of 0.14-0.19 depending on the global station distributions. Application of this method to multiple regional seismic arrays could benefit tsunami warning systems and emergency response to large global earthquakes. |
| WOS关键词 | FREQUENCY ENERGY RADIATION ; SUMATRA-ANDAMAN EARTHQUAKE ; TOHOKU EARTHQUAKE ; PACIFIC COAST ; DISPLACEMENT AMPLITUDE ; RAPID-DETERMINATION ; BACK-PROJECTION ; THRUST-FAULT ; RUPTURE ; DURATION |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000404382600024 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | Japan Society for the Promotion of Science(P13324) ; National Natural Science Foundation of China(41004020 ; Fundamental Research Funds for the Central Universities(CUG170602) ; China University of Geosciences (Wuhan) ; 41474050) ; Japan Society for the Promotion of Science(P13324) ; National Natural Science Foundation of China(41004020 ; Fundamental Research Funds for the Central Universities(CUG170602) ; China University of Geosciences (Wuhan) ; 41474050) ; Japan Society for the Promotion of Science(P13324) ; National Natural Science Foundation of China(41004020 ; Fundamental Research Funds for the Central Universities(CUG170602) ; China University of Geosciences (Wuhan) ; 41474050) ; Japan Society for the Promotion of Science(P13324) ; National Natural Science Foundation of China(41004020 ; Fundamental Research Funds for the Central Universities(CUG170602) ; China University of Geosciences (Wuhan) ; 41474050) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/46363]  |
| 专题 | 地质与地球物理研究所_中国科学院地球与行星物理重点实验室 |
| 通讯作者 | Wang, Dun |
| 作者单位 | 1.China Univ Geosci, Sch Earth Sci, State Key Lab Geol Proc & Mineral Resources, Wuhan, Peoples R China 2.Univ Tokyo, Earthquake Res Inst, Tokyo, Japan 3.Inst Stat Math, Tachikawa, Tokyo, Japan 4.Kyoto Univ, Disaster Prevent Res Inst, Kyoto, Japan 5.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Dun,Kawakatsu, Hitoshi,Zhuang, Jiancang,et al. Automated determination of magnitude and source length of large earthquakes using backprojection and P wave amplitudes[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(11):5447-5456. |
| APA | Wang, Dun.,Kawakatsu, Hitoshi.,Zhuang, Jiancang.,Mori, Jim.,Maeda, Takuto.,...&Zhao, Xu.(2017).Automated determination of magnitude and source length of large earthquakes using backprojection and P wave amplitudes.GEOPHYSICAL RESEARCH LETTERS,44(11),5447-5456. |
| MLA | Wang, Dun,et al."Automated determination of magnitude and source length of large earthquakes using backprojection and P wave amplitudes".GEOPHYSICAL RESEARCH LETTERS 44.11(2017):5447-5456. |
入库方式： OAI收割
来源：地质与地球物理研究所
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