Risk analysis of potential regional earthquake tsunami on the coast of Zhejiang Province

Mao Xianzhong; Zhu Qian; Wei Yong

doi:10.3969/j.issn.0253-4193.2015.03.004

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Mao Xianzhong, Zhu Qian, Wei Yong. Risk analysis of potential regional earthquake tsunami on the coast of Zhejiang Province[J]. Haiyang Xuebao, 2015, 37(3): 37-45. doi: 10.3969/j.issn.0253-4193.2015.03.004

Citation:

Mao Xianzhong, Zhu Qian, Wei Yong. Risk analysis of potential regional earthquake tsunami on the coast of Zhejiang Province[J]. Haiyang Xuebao, 2015, 37(3): 37-45. doi: 10.3969/j.issn.0253-4193.2015.03.004

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Risk analysis of potential regional earthquake tsunami on the coast of Zhejiang Province

doi: 10.3969/j.issn.0253-4193.2015.03.004

1.
The Division of Ocean Science and Technology, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China;
2.
NOAA Center for Tsunami Research, Pacific Marine Environmental Laboratory, NOAA, USA

Received Date: 2014-04-11

Abstract

Abstract

A three-layer tsunami model was established utilizing COMCOT numerical model to simulate the generation and propagation of 2011 Tohoku-Oki earthquake tsunami event. The numerical results show that the errors between the computed arrive time and wave height and the observations at the DARTs near earthquake source and the tide gauge stations along Zhejiang coast are less than 15%. Studies show that Japan Nankai Trough,Okinawa Trough and South Ryukyu Trench would be the major potential regional tsunami sources which may threaten Zhejiang coast. Three hypothetical events of the above sources with M_w9.1,M_w8.0 and M_w8.7 earthquakes were studied by the model to assess their impacts on Zhejiang coast. The numerical results show that the tsunami waves generated by three hypothetical events would take 3 to 8 hours to reach the Zhejiang coast area,and the amplitude could vary between 1 and 3 m,with the maximum wave up to 4 m. The simulation indicates that the study area would face the tsunami hazards with level Ⅲ or level Ⅳ,which can cause inundation or serious inundation risk.
- COMCOT model,
- earthquake tsunami,
- Japan Nankai Trough,
- Okinawa Trough,
- Ryukyu Trench,
- Zhejiang coast

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References(19)

References

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