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渤海、黄海和东海是西北太平洋陆缘海,有宽广的大陆架,太平洋潮波长驱直入,在大陆架海域形成显著的潮汐运动,由此而产生的潮余流输送在许多地区显示出重要作用。已有很多学者(方国洪等,1985;黄祖柯,1992)用数值方法计算过渤海的潮波运动,并给出了那里的潮余流分布。渤海的潮余流计算大体上有两种方法:(1)用二维或三维潮波运动方程组计算潮汐和潮流,然后再计算欧拉潮余流(方国洪、杨景飞,1985;于克俊、张法高,1987;黄祖柯,1992);(2)以弱非线性三维拉格朗日平均流理论为基础,计算拉格朗
The Bohai Sea, the Yellow Sea and the East China Sea are the continental margins of the Northwest Pacific Ocean. They have a broad continental shelf. The tidal wave of the Pacific Ocean drives straight into the sea and forms a significant tidal movement in the continental shelf. The tide-current transmission produced by this shows an important role in many areas. Many scholars (Fang et al., 1985; Huang Zuoke, 1992) calculated the tidal wave motion over the Bohai Sea numerically and gave the distribution of the tidal current there. There are basically two methods for calculating the tidal current in the Bohai Sea: (1) tidal and tidal currents are calculated by two-dimensional or three-dimensional tidal wave equations of motion, and then the Euler tidal current is calculated (Fang Guohong, Yang Jingfei, 1985; Yu Kejun, Zhang Fagao , 1987; Huang Zuoke, 1992); (2) Based on the weakly nonlinear three-dimensional Lagrangian average flow theory,