江苏沿海台风暴潮过程中的波浪增水分布研究-海洋预报

江苏沿海台风暴潮过程中的波浪增水分布研究

单位：1. 河海大学港口、海岸与近海工程学院, 江苏南京 210098;
2. 浙江水利科学研究院, 浙江杭州 310020

分类号：P731.23

出版年·卷·期（页码）：2022·39·第一期（48-55）

摘要：

基于浅水方程和第三代波浪模型，构建了江苏沿海的风暴潮和台风浪耦合模型，并通过对天文潮、风暴潮和台风浪的模拟对模型进行验证。通过比较6场典型台风过程中江苏沿海的波浪增水特征，剖析了江苏沿海波浪增水的量级及空间分布特征。研究表明：受岸滩地形控制，不同台风暴潮期间江苏沿海最大波浪增水分布呈现类似特征，总体上，江苏中部和南部沿海及近海浅滩波浪最大增水较为显著，可达0.2 m以上；由于波生流会受岸线地形影响，岸线凹陷处较易产生更大的波浪增水，个别地区最大波浪增水高于0.4 m。

Based on the shallow water equation and the third-generation wave model, a coupled model is set up to simulate storm surge and typhoon waves along the coast of Jiangsu Province. The model is verified by comparing the simulated and measured astronomical tidal, storm surge and typhoon waves. By comparing the characteristics of wave-induced setup along the coast of Jiangsu Province during six typical typhoon processes, the magnitude and spatial distribution of wave-induced setup along the coast of Jiangsu Province are analyzed. The results show that the distribution patterns of the maximum wave-induced setup along the coast of Jiangsu Province during different storm surge processes are similar under the control of nearshore bathymetry. In general, the maximum wave-induced setup is significant in the coastal and offshore shoals of central and southern Jiangsu Province with the maximum setup over 0.2 m. Larger wave-induced setup with the maximum value over 0.4 m is more likely to occur in the area with concaved shorelines due to the influence of shoreline topography on wavegenerated current.

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