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上海沿岸天文潮与风暴潮非线性相互作用的数值研究
端义宏, 秦曾灏
上海台风研究所 上海 200030
摘要:
运用二维非线性风暴潮、天文潮和联合水位模型对8次不同路径的热带气旋引起的上海地区天文潮与风暴潮的非线性相互作用进行了数值研究，讨论了由天文潮与风暴潮非线性相互作用引起的增水特征，分析了控制方程中各非线性项对天文潮与风暴潮非线性相互作用引起的水位变化的贡献。研究表明，考虑天文潮与风暴潮的非线性相互作用后，使风暴潮和水位的数值模拟结果得到了改善，非线性底摩擦在控制天文潮和风暴潮非线性相互作用中起着重要的作用，而非线性浅水项和动量对流输送对两潮的非线性相互作用也不可忽视。
关键词:  天文潮  风暴潮  非线性相互作用  数值研究
DOI：
分类号:
基金项目:上海市科学技术发展基金资助项目
NUMERICAL STUDY OF NONLINEAR INTERACTION BETWEEN STORM SURGE AND TIDE IN SHANGHAI COAST
Duan Yihong, Qin Zenghao
Shanghai Typhoon Institute,Shanghai 200030
Abstract:
By using both two-dimensional nonlinear storm surge model and water level model comprising the nonlinear interaction of tides with storm surges (T-S), the nonlinear T-S interaction in Shanghai coastal region for eight storm surge process induced by the tropical cyclone of different tracks are numerically analyzed in this paper. It is shown that a substantial improvement to the numerical simulation of the set-up and water level will be achieved when the nonlinear T-S interaction is taken into account.

The nonlinear bottom friction plays a most important role in controlling the nonlinear T-S interaction and both nonlinear shallow water and momentum advection terms contribute considerably to the nonlinear T-S interaction as well.
Key words:  Tides, Storm surge, Nonlinear interaction, Numerical study
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