摘要
较为详细地介绍了基于能量平衡方程的第三代近岸海浪数值模式 SWAN(Simulation Waves Nearshore)及其包含的物理过程(风生浪、底摩擦、白浪耗散、深度诱导波破碎、非线性波-波相互作用等)。并利用该模式对影响杭州湾—长江口沿岸海域的一次台风浪过程进行了模拟研究:模式所需风场由藤田台风风场模型嵌入对应台风特征等压线,并对相应时段的 NCAR/NCEPT 资料、单站资料进行同化后提供;利用自嵌套的方式提供波谱边界条件;模式模拟的结果与实际海浪观测资料相符较好。在此基础上,研究了底摩擦、深度诱导波破碎、三波相互作用等物理过程联合对近岸台风浪的影响,初步认识了它们在近岸台风浪生成、传播过程中的重要作用。
:In this paper, we use the SWAN model to simulate the typhoon waves at the nearshore around the Changjiang mouth area; The real data are added to the typhoon model of wind field to get the wind to drive the wave model; About the boundary, we use the self-nested method to provide. And we also compare the results between the real and simulated characteristic wave heights. Based on this study, we also research the Whitecapping, depth-induced breaking and bottom friction etc. which affect the nearshore waves .
出处
《海洋通报》
CAS
CSCD
北大核心
2003年第2期9-16,共8页
Marine Science Bulletin
基金
南京气象学院 KLME 资助项目