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基于Environment Fluid Dynamic Code(EFDC)模型,利用水龄概念,研究潮和风对海州湾及毗邻海域水交换的影响。结果表明,全年统计风场下,海州湾的平均水龄相对纯潮流作用下变化幅度为-48.5%~18.4%;夏季风场有利于海州湾的水体交换,水交换时间比纯潮流作用下减小36.3%;冬季风场会减缓海州湾的水体交换,水交换时间比纯潮流作用下增加40.8%,研究表明在开阔海域,季风对水交换影响显著,水交换的季节变化很好地解释了海州湾近岸冬季污染物浓度高、夏季污染物浓度低的动力机制。
Based on the Environment Fluid Dynamic Code (EFDC) model, the concept of water age was used to study the influence of tidal and wind on water exchange in Haizhou Bay and the adjacent sea area. The results show that under the annual statistical wind field, the change range of Haizu Bay under the effect of relative pure tidal current is -48.5% ~ 18.4%. The summer monsoon is beneficial to the exchange of water in Haizhou Bay and the water exchange time is longer than that of the pure current The winter monsoon slowed down the exchange of water in Haizhou Bay and the water exchange time increased by 40.8% compared with the pure tidal current. The results show that the monsoon has a significant impact on water exchange in the open sea and the seasonal change of water exchange is very significant Well explained the near-shore Haizhou Bay pollutants concentration in winter, the concentration of pollutants in summer low momentum mechanism.