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采用WRF模型构造的再分析风场作为海浪模式的驱动场,由于嵊泗位于长江、钱塘江的交会处,附近海域地形复杂,不可避免的会产生折射、变浅、绕射、波浪破碎、非线性波相互作用等近岸物理过程,因此采用第三代海浪数值模式SWAN。本文采用矩形网格和加密的三角网格对2012年4月嵊泗列岛海域波浪场进行模拟,并将模拟的有效波高与实测数据进行验证和误差指标分析,分析结果显示,2种网格模拟的海浪场的效果都很好,其中三角网格的模拟效果更好,可以进一步提高海域有效波高模拟的准确度,可以更精确的刻画复杂的地形。
The reanalysis wind field constructed by WRF model is the drive field of the sea wave mode. Because Shengsi is located at the intersection of the Yangtze River and Qiantang River, the terrain in the nearby sea area is complex and inevitably produces refraction, shallowing, diffraction, wave breaking, nonlinearity Wave interactions such as nearshore physical processes, so the third generation wave numerical model SWAN. In this paper, a rectangular grid and an encrypted triangular grid are used to simulate the wave field in the Shengsi Islands in April 2012, and the validated wave height and the measured data are verified and the error indicators are analyzed. The results show that the two kinds of grid simulation The effect of the wave field is very good. The simulation effect of the triangular grid is better, which can further improve the simulation accuracy of the effective wave height in the sea and can describe the complicated topography more accurately.