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本文从不可压缩流体连续方程出发,提出一种确定近海内潮波的方向和速度的方法,并根据单站的海流计阵列及测温链的测量进行了检验。本文限于潮流占主导的近海水域,在强温度层结条件下展开讨论,将海洋分为上、下等温层,层间以其平衡位置位于温跃层中央处的等温线为界,得出下、上层全流平均值的差Δ、Δ,基于潮波是透底长波,Δ、Δ中应不再含潮流成分,W_T(z)取一级近似和内潮波按波包处理,得出内潮波引起的切变效应与等温线起伏之间的统计关系式AΔ+BΔ=ζ,波向及波速,由φ_Ⅰ=arctgA/B,c_Ⅰ=H_1H_2÷(H(A~2+B~2)~(1/2))求得,经L_3站两次实测证明:单站测量确定内潮波是可行的,所算出的φ_Ⅰ与Slick走向大体一致。
Based on the incompressible fluid continuity equation, a method to determine the direction and velocity of tidal waves in the near ocean is proposed in this paper. The method is based on the single-station current-flow array and the measurement of temperature chain. This article is limited to the dominant currents of offshore waters, the discussion under the conditions of strong temperature stratification, the ocean is divided into upper and lower isothermal layer, the equilibrium between the location is located in the middle of the thermocline isothermal sector as the boundary, draw the next , The difference between the upper and lower full-flow averages Δ, Δ is based on the fact that the tidal wave is a long-wave through the bottom, Δ and Δ should no longer contain the tidal current component, WT (z) takes the first- The statistical relationship between the shear effect caused by the tidal wave and the isotherm fluctuation AΔ + BΔ = ζ, the wave direction and the wave velocity is represented by φ_I = arctgA / B, c_I = H_1H_2 ÷ (H (A_2 + B_2) ~ (1/2)). After two times of actual measurements at L_3 station, it is proved that it is feasible to determine the internal tidal wave by single station measurement. The calculated φ_Ⅰ and the trend of Slick are roughly the same.