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Study on the Characteristics of Water Exchange in the Huachang Bay,Hainan Province
Pages: 56-60
Year: Issue:  6
Journal: Journal of Ocean Technology

Keyword:  Huachang BayMIKE21tidal prismconservative materialhalf-exchange period;
Abstract: Huachang Bay is a semi-closed bay in the northern part of Hainan Island. With the construction of engineer projects, the water quality in the bay has deteriorated severely. A two-dimensional hydrodynamic mathematical model for Huachang Bay was established based on the MIKE21 software and the model simulation results were in good agreement with the measured data. Tidal prism and water exchange characteristics of Huachang Bay were studied in this paper. The results show that the ratio of tidal prism to the natural water capacity of Huachang Bay is large, indicating that Huachang Bay is significantly affected by hydrodynamic force outside the bay. The water exchange characteristics of Huachang Bay facilitate the diffusion of pollutants. Then conservative material diffusion method was used to quantitatively analyze the water exchange period of Huachang Bay. The half-exchange period of Huachang Bay is about 3 days and the process of water exchange is completed after 15 days. The concentration of conservative material fluctuates with the rising and falling tides.
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