文章指出,传统的潮汐数值计算方法未能充分利用通常可以得到的全部信息。为利用尽可能多的信息,本文将支配方程、本质和自然边界条件以及经验观测数据综合到一个模型中而构成一超定问题,并提出用有限差分——最小二乘方法求解。对黄海M_2潮模拟的实际应用显示了本方法的优越性。 The article points out that traditional tidal numerical methods fail to take full advantage of all the information usually available. In order to make use of as much information as possible, this paper combines the governing equations, the essential and natural boundary conditions, and the empirical observations into one model to form an over-determined problem and proposes a finite-difference-least-squares solution. The practical application of M_2 tide simulation in the Yellow Sea shows the superiority of this method.