Numerical Simulation for Environmental Effects by a Canal in the Northeast of the Shidao Bay;

This paper applies the finite difference method to establish a model of tidal current of Shidao Bay during spring based on the observations, and chooses COD as a pollutant factor to establish the model of advection-dispersion transport, and predicts the water quality by calculating the control total amount, and discusses the division of environmental functional area of Shidao Bay.

Based on the calculated tidal current field in Shidao Bay, this paperconstruct a La-grangian residual current model, and analyzes the sewagedischarge outlets in the marine environmental function programme ofShidao Bay from the view of Lagrange transport.

Con-sidering some un favorable geochemical factors, and that the original occurrence of diaoyudaoite hasnot yet been disc0vered, possible source other than natural magma should be taken into account-Metallurgical waste, re-distributed by tur.