Numerical Experiments of the Influence of Tide on Waves in Taiwan Strait

Abstract

引用第三代海浪模型SWAn(SIMulATIOn WAVES nEArSHOrE),首先模拟了台湾海峡冬季大风过程所致的海浪,模拟结果与浮标实测波高吻合较好;进而就潮流对海浪的影响进行了数值实验.在不同风速下,模拟了有潮流影响和无潮流影响下的有效波高,结果表明:潮流对海浪有效波高的影响呈现明显的潮周期振荡性质,对同一潮流场,波高振荡的振幅随有效波高的增大而增大,且拟合了波高振荡的平均振幅A与有效波高HS的关系,定量描述潮流对海浪的影响.The third-generation wave model SWAN(simulation waves nearshore) was used to simulate the waves under wind field measured in Taiwan Strait.The simulation results are in good agreement with buoy measured effective wave heights.Then the numerical experiments of the influence of tide on waves were studied.Under the different wind speed,the model SWAN was used to simulate the effective wave heights with and without the tide.The simulation results were compared and found that:first,the effects of tide on the waves showed significant tidal oscillations;for the same tidal field,tidal oscillation amplitude increased with the increasing of the wave height;and the relationship between the amplitude of the wave height a and the effective wave height Hs was conducted to describe the influence of tide on waves quantitatively.海洋公益性行业科研专项经费项

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