Study on the suspended sediment concentration and the sediment grain size distribution characteristics in the southwest coastal Laizhou Bay

According to the data of samples of suspended sediments and surface sediments collected from the southwest coastal Laizhou Bay in winter 2007, the sediment transport tendency and the sedimentary characteristics are analyzed, and the relation between suspended sediments and surface sediments is discussed. The research results show that the suspended sediment concentration increases gradually from the seashore to the offshore area, and the north is higher than the south; the grain size of surface sediments shows zonal distribution in the horizontal direction, and reduces gradually from the coast to the offshore under the hydrodynamic effect. Taking the published conclusions for consideration, this study explains that the sediments mainly come from the Yellow River sediments in the northern sea area of the Zimaigou channel, and the sediments of the southern sea area are from the resuspended action of the surface sediments and the transportation from the beach.