摘要
渤海为内陆海湾,仅以一海峡与北黄海相通。天体引力作用下的周期性海水运动是渤海海水运动的主要形式之一。因此,研究渤海潮流对污染物稀释扩散,迁移输送的规律是环境保护研究工作中的重要课题。渤海是以半日分潮性质为主的海域。因此本文着重讨论渤海半日分潮的数值模拟问题,以便在此基础上求解扩散方程式,进而得到污染物在主要半日分潮流作用下的空间分布状况。
In this paper,a numerical model containing the vertically integrated equation of motion and continuous equation,in which the pressure gradient force,coriolis force,frictional force at bottom and Iateral frictional force are considered,is applied to simulate numerically the principal semi-diurnal constituent in the Bohai Sea.The numerical calculation is con ducted by the use of the ADI(Alternating Direction Implicit)method with the square net of 5 km and 20 km separately.The treatment of closed boundary condition is different partly from the general numerical calculation of the tidal wave.The normal derivative extention method is used for modelling closed boundary at the shallow beach in the Bohai Bay and the Laizhou Bay.In order to compare the principal semi-diurnal constituent simulated numerically with the observed,the water level and tidal current values obtained from the numerical simulation are treated by means of the spectral analysis.The results show that values calculated numerically agree well with those observed.
作者
山广林
刘赞沛
王钟桾
徐洪达
雷光耀
Shan Guanglin;Liu Zanpei;Wang Zhongjin;Xu Hongda;Lei Guangyao(First Institute of Oceanography,National Bereau of Oceanography;Institute of Applied Mathematics,Academia Sinica)
出处
《海洋与湖沼》
1983年第5期419-431,共13页
Oceanologia Et Limnologia Sinica
