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DOI | 10.1029/2019GL085763 |
A multi‐array back‐projection approach for tsunami warning | |
Y. Xie; L. Meng | |
2020-05-24 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2020 |
英文摘要 | Recent development of dense strong‐motion networks and seismic array processing enables rapid tsunami predictions based on the back‐projection (BP) approach. We develop a multi‐array BP method using local seismic networks (0.7°<∆ <3.5°). The local BPs using individual arrays are first calculated, and are then merged into a single image of the rupture process. This multi‐array approach circumvents the issue of artifact in single‐array BP caused by the overlapping of multiple phases and coda waves. Based on the local BP approach, tsunami predictions are available 7 min after the origin time. Case studies of the 2003 Mw 8.1 Tokachi‐oki and the 2011 Mw 9.0 Tohoku earthquakes show that their rupture zones are well resolved and are comparable with principal slip areas inferred from tsunami observations. The amplitude and arrival time errors of the predicted tsunami waves are within ‐1.59 to 3.74 m and ‐10.0 to 10.0 min, which are sufficiently small for warning purposes. |
领域 | 气候变化 |
URL | 查看原文 |
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文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/270414 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Y. Xie,L. Meng. A multi‐array back‐projection approach for tsunami warning[J]. Geophysical Research Letters,2020. |
APA | Y. Xie,&L. Meng.(2020).A multi‐array back‐projection approach for tsunami warning.Geophysical Research Letters. |
MLA | Y. Xie,et al."A multi‐array back‐projection approach for tsunami warning".Geophysical Research Letters (2020). |
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