In the present study, current effects on waves (CEW) in a strong western boundary current area is investigated. An analytical formula is first derived to address how the kinematic parameters of currents affect wave variations: strain rate, divergence and deformation rate. The formula is applied to numerical wave solutions in the East China Sea (ECS), where the Kuroshio flows through. It is found that modeled wave heights and wave periods with and without the CEW are of significant differences in the Kuroshio area and also carry strong seasonality. In January, when the wave direction is against the Kuroshio, wave heights and periods with the CEW are significantly higher and longer than those without the CEW, while the opposite is noted in July when the wave direction is in the same as the current. The wave energy is also greatly enhanced (lessened) along the Kuroshio axis in January (July), due to the CEW. The analysis of the model results also shows that different terms in the CEW dominate in different seasons. In January, the wave variation caused by the CEW is due to the deformation rate of the current velocity, while in July, it is caused by the strain rate of current velocity. The influence of the CEW on the waves in the Kuroshio region is about 10–20%.

在本研究中，研究了在强西部边界流域中电流对波浪的影响。首先导出一个解析公式，以解决电流的运动学参数如何影响波的变化：应变率，发散率和变形率。该公式适用于黑潮流经的东海（ECS）的数值波解。结果发现，在有黑潮和无黑潮的情况下，模拟的波高和波周期在黑潮地区具有显着差异，并且具有强烈的季节性。在1月，当波浪方向与黑潮相对时，使用CEW的波浪高度和周期明显高于不使用CEW的波浪高度和周期，而在7月，当波浪方向与当前方向相同时，则相反。由于CEW，1月（7月）沿黑潮轴线的波能也大大增强（减小）。对模型结果的分析还表明，CEW中的不同术语在不同季节占主导地位。在1月，由CEW引起的波浪变化是由于当前速度的变形率引起的，而在7月，则是由当前速度的应变率引起的。CEW对黑潮地区海浪的影响约为10–20％。