Quantitative research on earthquake-generated tsunami hazards based on the numerical simulations in Bohai Sea

Wang Peitao; Gao Yi; Yu Fujiang; Fan Tingting

doi:10.3969/j.issn.0253-4193.2014.01.007

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Wang Peitao, Gao Yi, Yu Fujiang, Fan Tingting. Quantitative research on earthquake-generated tsunami hazards based on the numerical simulations in Bohai Sea[J]. Haiyang Xuebao, 2014, 36(1): 56-64. doi: 10.3969/j.issn.0253-4193.2014.01.007

Citation:

Wang Peitao, Gao Yi, Yu Fujiang, Fan Tingting. Quantitative research on earthquake-generated tsunami hazards based on the numerical simulations in Bohai Sea[J]. Haiyang Xuebao, 2014, 36(1): 56-64. doi: 10.3969/j.issn.0253-4193.2014.01.007

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Quantitative research on earthquake-generated tsunami hazards based on the numerical simulations in Bohai Sea

doi: 10.3969/j.issn.0253-4193.2014.01.007

1.
National Marine Environment Forecasting Center, Beijing 100081, China
2.
Key Laboratory of Research on Marine Hazards Forecasting, National Marine Environmental Forecasting Center, State Oceanic Administration, Beijing 100081, China
3.
National Marine Environment Forecasting Center, Beijing 100081, China;Key Laboratory of Research on Marine Hazards Forecasting, National Marine Environmental Forecasting Center, State Oceanic Administration, Beijing 100081, China

Received Date: 2012-02-08

Abstract

Abstract

A numerical simulation study on potential earthquake-generated tsunami is carried out in the paper for Bohai Sea based on comprehensive consideration of the tsunamigenic conditions, topography feature, geological structure, seismological features and historical records about earthquake and tsunami. Tsunamigenic zones and possibility of tsunami hazards in Bohai Sea were analyzed and discussed respectively. Several local tsunamis were simulated by tsunami numerical model which was triggered by historical subduction earthquakes which have magnitudes larger than Mw7.0 in Bohai Sea. The tsunami model adopted adaptive mesh refinement technology based on Quadtree principle. The contradiction between the local resolution and the computational efficiency was resolved by using adaptive mesh. Numerical computation including seabed deformation,tsunami propagating over deep and shallow water. Potential tsunami induced by a hypothetical earthquake with Mw7.8 was simulated using tsunami numerical model in this paper. Its propagation scenario and wave characteristics were analyzed around Bohai Sea region. The impact of potential tsunami on Bohai Sea coasts and northern Huanghai Sea coasts was discussed quantitatively ground on the numerical calculation result. A preliminary tsunami hazards for Bohai Sea were classified. The study presented in this paper will serve as the technological support to the tsunami hazards analysis and the technology research of tsunami early warning.
- tsunamis in Bohai Sea,
- numerical simulation,
- quadtree,
- tsunami early warning

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References(42)

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