陆源污染物对连云港海域环境影响研究

Research on the environment influence of land pollution sources on LianYungang sea area

应用沿深平均二维模型模拟了连云港海域的潮流场,分析了该海域的潮波特性,在此基础上,应用扩散方程对连云港海域的水污染扩散进行了数值模拟,得到了港域水体的半交换期;比较分析了西大堤对该水域水交换的影响;计算了港域水体的Lagrange余流场,并分析了其对污染物运移的影响,得到了港域几个典型位置的Lagrange轨迹;计算了港域的纳潮量,综合分析了港域水体的物理自净能力。

On the basis of the depthaveraged 2D tidal model, the tide feature in LianYungang sea area is studied. Pollutant dispersion in the area is simulated according to the depthaveraged 2D dispersion equation. The halfexchangeperiod of the water body is presented, based on which the effects of West Embankment are probed. The Lagrange residual current field of the area is presented, the effects of which on pollutant dispersion are analysed and the Lagrange track of some typical positions in the area is calculated. The tidal capacity is also calculated and the synthetical analysis on physical selfpurification capability of the water body is conducted.