Basing on ECOMSED model,found a 3-D hydrodynamic-transport numerical model for the offshore area near Xiaoqinghe River Estuary.The hydrodynamic module is driven by tide and tidal current.Sediment module includes function of aggregation(flocculation),resuspension, transport and deposition of cohesive.The numerical results are compared with observation data of elevation,tidal current and suspended sediment concentration(SSC).It shows that the SSC increases gradually from the seashore to the offshore area,and ...