Hydrological and Sediment Characteristics of Sand Ridge Field in Jiangsu Coastal Area of China

The sand ridges field in Jiangsu coastal area has been the key region of tidal flat reclamation, waterway regulation and port construction. Adopting the hydrological and sediment data in winter, the tidal patterns were revealed. In addition, the depth-averaged velocity, sediment grain size and sediment concentration in each station were analyzed and compared in detail. The result shows that the tidal in study area is regular semidiurnal and diurnal inequality. The velocity has a decreasing tendency with the Tiaozini water area being centered towards the surrounding areas. The grain size gradually decreases and then increases from north to south, while the sediment concentration gradually increases and then decreases from north to south.