Program

As the longest river in China, the Yangtze River transports a large amount of sediment into the ocean, which causes significant impacts on the geomorphological evolution, ecosystem balance and the sediment transport processes of the estuarine system. Because of the complicated hydrodynamic condition in this region, the Yangtze Delta has been a research hotspot for physical oceanographers for a long time. In situ hydrological investigation was carried out at 3 anchor stations near the south passage of the Yangtze River in July, 2016. The CTD, ADCP, ADV and OBS were deployed at 3 stations to obtain the hydrodynamic data for both water column profile and the bottom boundary layer.

The result shows that the region has a semidiurnal tidal cycle with a range of 2.5m. The duration of flood tide is about 2 hours longer than ebb tide. The maximum velocity occurred during the flood tide and the average velocity of flood tide is bigger than that of ebb tide.