Study and application of the refined tsunami real time warning system including tsunamigenic wave and current

Ren Zhiyuan; Hou Jingming; Wang Peitao; Li Tao; Yuan Ye; Zhao Lianda

doi:10.3969/j.issn.0253-4193.2019.09.014

Volume 41 Issue 9

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Ren Zhiyuan，Hou Jingming，Wang Peitao, et al. Study and application of the refined tsunami real time warning system including tsunamigenic wave and current[J]. Haiyang Xuebao，2019, 41(9)：145–155，doi:10.3969/j.issn.0253−4193.2019.09.014

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Study and application of the refined tsunami real time warning system including tsunamigenic wave and current

doi: 10.3969/j.issn.0253-4193.2019.09.014

Ren Zhiyuan^{1, 2},
Hou Jingming^{1, 2},
Wang Peitao^{1, 2},
Li Tao¹,
Yuan Ye^{1, 2},
Zhao Lianda^{1, 2}

1.
National Marine Environmental Forecast Center, Beijing 100081, China
2.
National Tsunami Warning Center, Ministry of Natural Resources, Beijing 100081, China

Received Date: 2018-09-12
Rev Recd Date: 2018-12-11

Available Online: 2021-04-21

Publish Date: 2019-09-25

Abstract

Abstract

Based on the Okada model, nonlinear shallow water equation, and nested grid with high resolution, a real-time tsunami warning system of transoceanic-offshore-local is built for Wenzhou and Taizhou’s coastal region of Zhejiang Province. The grid resolution of the refined layer is 900 m. The tsunami warning system includes parallel numerical calculation module, visualization module based on Python 2D library (matplotlib), and product integration module which integrates all numerical graphical products on a web page by Python. Once an earthquake occurs, the system could complete the numerical calculation, visualization processing and graphic product integration within 10 minutes. Firstly, the system has been validated by the 2011 Japan tsunami with the magnitude of M_w 9.0. Then, the extreme potential tsunami from Nankai Trough and Okinawa Trough is simulated by the system in terms of tsunami amplitude and currents. The results show that the tsunami warning system can improve the efficiency and accuracy of tsunami early warning in the coastal region, and provide a scientific basis for tsunami early warning, disaster reduction and decision supporting.
- earthquake tsunami,
- tsunami warning system,
- refined forecast,
- numerical simulation

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References(41)

References

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