Source inversion and numerical simulation of 2017 Mw 8.1 Mexico earthquake tsunami
Source inversion and numerical simulation of 2017 Mw 8.1 Mexico earthquake tsunami
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2017年墨西哥Mw 8.1地震海啸震源反演及数值模拟
DOI：
10.1007/s11069-018-3465-y
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发表时间：
2018-08
期刊：
影响因子：
3.7
通讯作者：
a Zhao
中科院分区：
文献类型：
--
作者：
Zhiyuan Ren;Xinran Ji;Peitao Wang;Jingming Hou;Di Shan;Li;a Zhao
基于浅水非线性方程和海啸测量，给出了2017年9月8日墨西哥皮家潘8.1级地震的逆震源。反海啸震源引起的海底变形最大上升0.5m，最大沉降量− 1.4m，数值模拟结果与实测值吻合较好。我们根据海啸的幅度和洋流来描述海啸传播的情景。与海啸波在深海中传播的特点不同，海啸引发的海流仅限于浅水海岸，即400米水深的等高线。尽管大多数地区承受着3节(1.5m/S)或3-6节(1.5-3节/S)的海啸流，这是从无破坏到轻至中等破坏的门槛，但持续几个小时表明了潜在的海滩侵蚀和泥沙输移。在名为Mar Muerto的泻湖入口处，可以通过更精细的网格识别出海啸引发的洋流的漩涡。最后，研究了扩散效应对海啸在太平洋传播的影响。
Based on the nonlinear shallow water equations and tsunami measurement, this study has presented the inversion source, which is generated by an earthquake of Mw 8.1 that occurred in Pijijiapan, Mexico, on September 8, 2017. The seafloor deformation induced by the inversed tsunami source reached maximum uplift of 0.5 m and subsidence of − 1.4 m. The numerical results simulated by the inversed source could match well with the measured data. We characterize tsunami propagation scenarios regarding tsunami amplitude and currents. Unlike the feature of tsunami wave amplitude propagation in the deep ocean, the currents induced by the tsunami are confined to shallow coasts, noted as the contour of 400 m water depth. Although most regions endure tsunamigenic currents below 3 knots (1.5 m/s) or in range of 3–6 knots (1.5–3 m/s), which is the threshold from no damage to minor–moderate damage, the duration lasting several hours indicates the potential beach erosion and sediment transport. The eddies of tsunami-induced currents could be identified at the entrance gate of lagoon named Mar Muerto with a finer grid. Finally, the dispersion effect has been investigated on tsunami propagation in the Pacific Ocean.
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影响因子：
5.2
作者：
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通讯作者：
A. Rabinovich;R. Candella;R. Thomson
影响因子：
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作者：
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通讯作者：
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影响因子：
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DOI：
10.1061/(asce)0733-950x(2007)133:6(414
发表时间：
2007-11
期刊：
--
影响因子：
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作者：
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通讯作者：
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影响因子：
5.2
作者：
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通讯作者：
Y. Yokota;K. Koketsu;Y. Fujii;K. Satake;S. Sakai;M. Shinohara;T. Kanazawa