潮汐对吕宋海峡附近海域环流结构的影响

The Tidal Effect to Circulation Near Luzon Strait

为了考察潮汐混合效应对吕宋海峡附近海域环流场的影响,本文使用ROMS区域海洋模式,通过无潮实验与有潮实验的对比分析指出,潮汐混合作用可以影响121°E断面上的水交换和120d平均的纬向流速分布;在模拟时段内加入潮汐后,模拟结果中台湾岛西南的反气旋涡强度大幅减弱,贴近黑潮东侧的涡旋强度明显强于无潮实验,证明潮汐作用可以引起吕宋海峡海洋环流场较大的改变,特别对黑潮以"跨隙"路径通过吕宋海峡有贡献。

The effect of tide-induced mixing to the circulation pattern near Luzon Strait is investigated using ROMS（Regional Ocean Model） by comparison between simulations with and without tide.The tide-induced mixing influences the water exchange and 120 day-averaged zonal velocity at the 121°E section;During the simulation period,the experiment with tide shows that the strength of the anticyclonic eddy southwest of Taiwan Island is dramaticly reduced,and the eddies to the east of Kuroshio are evidently stronger,comparing to the experiment without tide.This implies that tide effect can induce the remarkable change to the current near Luzon Strait,especially contribute to the gap-leaping path of Kuroshio in the Luzon Strait.