Experiment Study of Sediment Characteristics in Silty sand Coast

Based on the characteristics of sediment,the authors put forward that the coast with the sediment diameter between 0.03mm to 0.12mm is categorized as the silty sand coast,and its characteristics are studied by experiments.The results show that the characteristics of sediment in silty sand coast is related not only to the sediment diameter,but also to the size distribution.When it contains much more cohesive particles the overall characteristics are that of mud.When it contains less cohesive particles the overall characteristics are that of loose sand particles.The former is suspended load movement and the latter are suspended\|load and bed load movement.For the bed load movement,the rate of transport is related not only to the dynamic condition,but also to the sediment diameter.In the same dynamic condition,the finer the sediment,the smaller the rate of bed load transport will be.