摘要
长期以来,全流观点曾在海流理论中占居统治地位,人们运用全流观点初步阐明了海水运动的某些基本规律。这种理论的实质在于通过流速的深度积分将作为三维问题的海水运动转成平面问题加以研究,从而使问题的数学处理大为简化。无疑,这样就排除了研究流场空间结构的可能性。此外,为了验证从全流理论所获得的结论,作者们在选择全流速度无辐散层时带有很大的偶然性与任意性,通常将表层流速即当作全流速度。
In this article,Munk’s well-known theory of the wind-driven ocean circulation is extended to the three dimension of space.An analytical solution for the equations of motion governing the non-accelerated movement of sea water with the assumption of both constant coefficients of lateral and vertical eddy viscosity is given.The current velocities are composed of two parts:e.g.wind-driven’s and gradient’s.Ekman’s solution concerning the wind-driven current in an ocean of infinite depth can be derived from the author’s solution as a special case.With this solution,the horizontal velocity field of ocean currents may be determined in terms of the knowledge of the wind stresses and the pressure(or dynamic height)fields.The vertical component velocity can thus be derived by integrating the equation of continuity.Moreover,a scheme for numerically calculating the current velocities with special application to the three-level ocean model is designed.Finally,this article also deals briefly with the problem for numerically predicting the ocean currents.
作者
秦曾灏
CHIN TSENG-HAO(Shantung College of Oceanology)
出处
《海洋与湖沼》
1963年第4期285-297,共13页
Oceanologia Et Limnologia Sinica
