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建立了东中国海潮波数值模型，模拟了Ｍ２分潮波的传播，以研究Ｍ２分潮波的时空分布与黄海海底辐射沙洲形成和演变规律之间的关系．Ｍ２分潮波进入南黄海后，部分受山东半岛阻隔，在半岛以南水域及海州湾呈逆时针旋转．旋转波与后继的南黄海前进波在江苏北部沿海相遇，并在弓京港附近的水域形成潮波辐聚．在辐聚区内，潮差大，流速急，成为塑造海底沙脊间深槽的主要动力条件．７０００年前古海岸下Ｍ２分潮的数值试验表明，古河口附近的潮波为移动驻波型，其范围刚好与现在的南通市相对应．此结果可以为海底辐射沙洲形成演变的研究提供一定的依据
The numerical model of tidal waves in the East China Sea was established and the propagation of the M2 tidal wave was simulated to study the relationship between the spatio-temporal distribution of the M2 tidal wave and the formation and evolution of the submarine sandbank in the Yellow Sea. After the M2 tidal wave entered the southern Yellow Sea, it was partially obstructed by the Shandong Peninsula and turned anticlockwise in the waters south of the peninsula and Haizhou Bay. The rotating wave meets the succession of the South Yellow Sea forward waves on the northern coast of Jiangsu Province and forms a tidal wave in the water near the port of Beijing. In the convergence zone, the tidal range is big, and the velocity of flow is acute, becoming the main dynamic condition for shaping the deep trough between the seafloor ridges. The numerical experiment of M2 tide under the ancient coast 7,000 years ago shows that the tidal wave near the ancient estuary is a moving standing wave type, and its scope just corresponds to the present Nantong City. This result can provide some evidences for the research on the evolution of submarine radiation sand bar formation