Ancient tidal currents shaped coastlines in East Asia, impacting sediment transport.
Sediment transport patterns on the continental shelves of the Bohai Sea, Yellow Sea, and East China Sea during different periods in the Holocene were studied. Tidal currents played a key role in shaping the seabed, forming features like sand ridges and shoals. The movement of sediments from rivers and erosion of older materials by tidal currents influenced the distribution of finer and coarser sediments in these areas. The findings suggest that the current sediment patterns in these seas are a result of complex interactions between tidal currents, river inputs, and historical sea level changes.