摘要
潮流和潮余流对海湾和沿岸海域污染物质的迁移和分散所起的重要作用，已为大家所共知。潮余流亦称为潮余环流，它导致湾内的海水循环，促进与外海水的交换。然而，它是欧拉型的。溶解在海水中和以悬浮体形式混合在海水中的污染物质的迁移，与海水质点的运动一样，具有拉格朗日性质。海水质点在潮汐海区内的迁移，
By using the method of tracking marked particles the Lagrangian residual current in the Jiaozhou Bay are calculated.The computations show that the Lagrangian residual current fields of the Bay are different from and more complicated than the Eulerian ones.The fields of Lagrangian residual current vary with the discharging instance of marked particles and give us the transport tendency of the water particles including liquid pollutant .According to the results obtained from the simulation of nine pollutant sources the domain considered can be devided into three regions.the active region of water exchange, containing pollutant sources 1-3, in this region both the distance of drift and the variation of drift direction are large; the stagnant region of water exchange, containing pollutant sources 4-7, where the drift factors mentioned above are small-good conditioned region of water exchange, containing pollutant sources 8-9, where the drifts of water particles are towards the main gyre thus the pollutant is easy to be converged into the area of main gyre and then to be carried away to the mouth of the Bay.
