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在对南黄海辐射沙洲区的潮汐、潮流特征作进一步探讨的基础上，数值模拟了该区的悬沙潮扩散。根据计算结果，分析了计算海域悬沙含量在一个半日潮过程中随潮流场的瞬时变化规律，研究了不同地点悬沙含量与潮位、潮流的关系，总结了涨、落潮平均含沙量的平面分布规律。结果表明，该区的潮流场控制着悬沙的扩散、运移和分布，进而控制着海底地形的发育，尤其是辐射沙洲北大南小不对称格架的塑造与辐射沙洲根部的加积淤高。
Based on the further study on the tidal and tidal current characteristics of the radiation sandy barren area in the South Yellow Sea, the diffusion of suspended sediment in this area is numerically simulated. According to the calculation results, the instantaneous variation regularity of suspended sediment content in a sea area during a half-daily tide is analyzed. The relationship between suspended sediment content and tide level and tidal current in different locations is analyzed. The average surface sediment concentration Distribution. The results show that the tidal flow field in this area controls the diffusion, migration and distribution of suspended sediment, and then controls the development of the seafloor topography.