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本文采用二维非线性潮波微分方程组的有限差分方法同时计算了渤海全日、半日和浅水潮。全日和半日潮计算结果与实测符合良好。四分日潮分布形式与实测一致,但振幅偏大,认为这可能是由于二维方程中摩擦力项不能很好代表高频潮波的耗散效应。文章指出,已有的半日同潮图在莱州湾差别较大,可能是由于黄河口岸形改变造成的。本文结果与近年同潮图一致。对全日和半日潮流,本计算给出了一个前人未注意到的圆流点。文章还给出了潮生余水位和余流的分布,并计算了潮能通量。
In this paper, the full-day, half-day and shallow tidal wave of the Bohai Sea are simultaneously calculated by the finite difference method of two-dimensional nonlinear tidal wave differential equations. The results of full-day and half-day tide are in good agreement with the measured data. The distribution pattern of the tetrad diurnal tide is in good agreement with the measured one, but the amplitude is too large. This may be due to the fact that the friction term in the two-dimensional equation can not represent the dissipation effect of the tidal wave at high frequency. The article points out that the existing half-day tide chart in Laizhou Bay difference is greater, probably due to changes in the shape of the Yellow River port caused. The result of this paper is consistent with the same tide chart in recent years. For the full-day and half-day tide, this calculation gives a roundabout that our predecessors did not notice. The article also gives the distribution of tide level and residual flow, and calculates the tidal energy flux.