ABSTRACT
ABSTRACT: It shows an increasing tendency in the construction of artificial island because of exploitation of ocean areas and resources in china. The water exchange is an important problem about environment, which should be considered in the layout of artificial islands. The mathematical model method is used to evaluate the water exchange ability of the offshore artificial island (Lotus Island) in a semi-open bay with the out sea in this paper. The results show that after the second artificial island is finished, tidal currents around and within island are still regular. The half-life time is 1.05 days. Lotus Island satisfies the PINAC’s rule about the environment protection that the concentration of internal water is less than 37% after eight periods of tide.
