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采用二维非线性潮波微分方程对渤海M_2、S_2、K_1、O_1四个分潮进行数值模拟,得出四个分潮的潮波图,椭圆长短轴图,同潮流时图以及潮汐、潮流性质图和S_2与M_2、K_1与O_1的迟角差图。依此可以系统地了解渤海潮波系统的分布变化规律。依据30～40年代测得的渤海海图以及假设数十年后渤海的岸形对渤海进行数值模拟,从而了解过去和现在渤海潮波的变化情况,以及对未来潮波的变化作出判断。计算表明,从30年代到70年代以来,渤海南部的半日分潮波发生了很大的变化,而日分潮的潮波变化较小。
Two-dimensional nonlinear tidal wave differential equations are used to simulate the four tidal moons of M_2, S_2, K_1 and O_1 in the Bohai Sea. The tidal wave plots, elliptical long and short axis diagrams, tidal current tidal chart and tidal and tidal currents Character diagrams and difference diagrams between S_2 and M_2, K_1 and O_1. This can be a systematic understanding of the distribution of the Bohai Sea tidal wave system changes. Based on the Bohai Sea charts measured from the 30s to the 40s and the shoreline of the Bohai Sea assumed decades ago, the Bohai Sea is numerically simulated to understand the past and present changes of the Bohai Sea tidal wave and to judge the future tidal wave changes. Calculations show that since the 1930s and the 1970s, the semi-diurnal tidal waves in the southern Bohai Sea have undergone great changes, while the tidal waves in the diurnal tidal waves have changed little.