南海北部湾台风浪数值模拟方法研究

对第三代近岸海浪数值模式SWAN控制方程进行简要介绍,并利用由藤田和高桥公式相互嵌套的方法提供了台风风场,用SWAN模式采用大小模型范围嵌套的方式对影响南海北部湾海域的8303号台风浪过程进行了模拟验证,并利用该模式预报了该海域在不同台风作用下的台风浪过程.结果表明,模拟结果与实际海浪观测资料吻合较好,计算预报结果可以为该海域台风浪防灾等提供较为重要的参考.

Numerical Simulation for Typhoon Wave at North Bay of the South Sea

This paper gives a brief introduction of SWAN equation which is the third-generation nearshore seawave numerical model, and provides a wind field of typhoon using the method of the Fujita.T formula and Takahashi formula. Using the SWAN model, which influences the sea area of North Bay of the South Sea, we simulate and validate the No.8303 typhoon wave process, and forecast the process of typhoon waves of the sea area under different typhoon function. The result reveals that the simulated result tallies well with the field observation data, thus the forecasts may serve as an important reference for disaster prevention of typhoon wave at the sea area.