Effects of currents on winter wind waves in the tide-dominated Qiongzhou Strait (QS) were numerically evaluated via employing the coupled ocean-atmosphere-wave-sediment transport (COAWST) modeling system. Validations showed satisfactory model performance in simulating the intense tidal currents in the QS. Different effects of sea level variations and tidal currents on waves were examined under the maximum eastward (METC) and westward (MWTC) tidal currents. In the east entrance area of the QS, the positive sea levels under the MWTC deepened the water depth felt by waves, benefiting the further propagation of wave energy into the inner strait and causing increased wave height. The METC and the MWTC could both enhance the wave height in the east entrance area of the QS, mainly through current-induced convergence and wavenumber shift, respectively. By current-induced refraction, the METC (MWTC) triggered counterclockwise (clockwise) rotation in peak wave directions in the northern part of the QS while clockwise (counterclockwise) rotation in the southern part.

利用耦合的海-气-波-泥沙耦合（COAWST）建模系统，对潮汐主导的琼州海峡（QS）中洋流对冬季风浪的影响进行了数值评估。验证显示，在模拟QS中强烈的潮流时，模型表现令人满意。在最大的向东（METC）和向西（MWTC）潮流下，研究了海平面变化和潮流对波浪的不同影响。在QS的东入口区域，MWTC下的正海平面加深了波浪感觉到的水深，有利于波浪能进一步传播到内海峡，并导致波浪高度增加。METC和MWTC都可以分别通过电流感应收敛和波数移位来提高QS东入口区域的波高。