Author(s): Chunyan Hu; Qianhai Chen; Zhaoming Xu; Yong He; Xiaoyun Ye
Linked Author(s):
Keywords: Yangtze River Estuary; Flow moment; Sediment transportation; Salinity change; Regulation plan
Abstract: The study on the comprehensive regulation& development of the Yangtze River estuary is one of the most important tasks attracting the public focus. Because of the large concerned area and the complex dynamic factors (runoff, tide and wave, etc. ), the numerical model is becoming one of the primary methods for project planning due to its advantages of money and time saving. After the regulation put into effect, it will have influence on the natural environment of the Yangtze River estuary which include the runoff, sediment, saltwater intrusion, bed erosion and deposition, water pollution and so on. In this paper a2-D mathematical model is established by MIKE 21 software to simulate the flow motion, saltwater intrusion and sediment transportation for the total zone at the Yangtze River estuary, which covers the Chengtong reach, the South and North Branch, the South and North Channel, the South and North Passage, and part of area out of the sea. The model is applied to simulate the flow phenomenon, saltwater intrusion and sediment transportation of the entire area with the newest hydrologic data, while under the same boundary conditions, the changes of water movement, sediment and salinity transformation are calculated in the model due to the planning project in the Yangtze River estuary. With the numerical results especially the flow movement result, this paper gives the technical support for the planning project design at the Yangtze River estuary.
Year: 2004