| Numerical Investigation of High Tide Level Due to A Super Typhoon in A Coastal Region |
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| 作者姓名： | 黄世昌 李玉成 赵鑫 谢亚力 |
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| 作者单位： | State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology，State Key Laboratory of Coastal and Offshore Engineering，Dalian University of Technology，Zhejiang Institute of Hydraulics and Estuary，Zhejiang Institute of Hydraulics and Estuary，Dalian 116024，China Zhejiang Institute of Hydraulics and Estuary，Hangzhou 310020，China，Dalian 116024，China，Hangzhou 310020，China，Hangzhou 310020，China |
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| 摘 要： | A numerical model of the coupling between astronomical tide and storm surge based on Mike 21 is applied to the coastal regions of Zhejiang Province.The model is used to simulate high tide levels combined with storm surge during 5 typhoons,including two super typhoons,that landed in the Province.In the model,the atmospheric forcing fields are calculated with parametric wind and pressure models.The computational results,with average computed errors of 13 cm for the high astronomical tide levels and 20 cm for the high storm-tide levels,show that the model yields good simulations.Typhoon No.5612,the most intense to land in China since 1949,is taken as the typical super typhoon for the design of 5 typhoon routes,each landing at a different location along the coast.The possible extreme storm-tide levels along the coast are calculated by the model under the conditions of the 5 designed typhoon routes when they coincide with the spring tide.Results are compared with the high storm-tide levels due to the increase of the central atmospheric pressure at the base of a typical super typhoon,the change of tidal type,and the behavior of a Saomai-type typhoon.The results have practical significance for forecasting and minimization of damage during super typhoons.
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| 关 键 词： | 沿海区域 台风 风暴潮 浙江 |
| 修稿时间： | 2007-03-22 |
Numerical Investigation of High Tide Level Due to A Super Typhoon in A Coastal Region |
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| HUANG Shi-chang,LI Yu-cheng,ZHAO Xin,XIE Ya-li.Numerical Investigation of High Tide Level Due to A Super Typhoon in A Coastal Region[J].China Ocean Engineering,2007,21(3):471-484. |
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| Authors: | HUANG Shi-chang LI Yu-cheng ZHAO Xin XIE Ya-li |
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| Institution: | 1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dulian 116024, China ;2. Zhejiang Institute of Hydraulics and Estuary, Hangzhou 310020, China |
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| Abstract: | A numerical model of the coupling between astronomical tide and storm surge based on Mike 21 is applied to the coastal regions of Zhejiang Province.The model is used to simulate high tide levels combined with storm surge during 5 typhoons,including two super typhoons,that landed in the Province.In the model,the atmospheric forcing fields are calculated with parametric wind and pressure models.The computational results,with average computed errors of 13 cm for the high astronomical tide levels and 20 cm for the high storm-tide levels,show that the model yields good simulations.Typhoon No.5612,the most intense to land in China since 1949,is taken as the typical super typhoon for the design of 5 typhoon routes,each landing at a different location along the coast.The possible extreme storm-tide levels along the coast are calculated by the model under the conditions of the 5 designed typhoon routes when they coincide with the spring tide.Results are compared with the high storm-tide levels due to the increase of the central atmospheric pressure at the base of a typical super typhoon,the change of tidal type,and the behavior of a Saomai-type typhoon.The results have practical significance for forecasting and minimization of damage during super typhoons. |
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| Keywords: | storm surge storm-tide super typhoon coastal region Zhejiang Province |
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