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On Several Mechanisms of the Formation of the Compensated Thermohaline Inhomogeneities in the Ocean

机译：关于海洋中补偿性热盐不均一性形成的几种机制

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摘要

The process of the geostrophic adjustment in the stably stratified two-component medium is studied in the framework of a linear approximation. We demonstrate that, at the final stage of that process, a stationary trace is generated by the distribution of the temperature and salinity, whose horizontal inhomogeneities mutually compensate in the field of the density. The compensation level for the stationary thermohaline distributions forming during the geostrophic adjustment is estimated. The origination mechanism of compensated thermohaline inhomogeneities in hydrodynamically stable shear flows is examined. We show that, in such flows, the disturbances of the fields of buoyancy (density), pressure, and velocity damp with time, whereas the compensated disturbances of the fields of the temperature and salinity are carried off by the flow without damping. Based on the explicit solutions of the dynamic equations, it is shown that the evolution of the compensated distribution of the temperature and salinity in the shear flows usually results in the sharpening of the spatial gradients. This feature may be, among others, related to one of the factors of the origination of the fine structure of the ocean: the small-scale thermohaline inhomogeneities, which exist against the background of the smooth vertical distribution of the density.
机译：在线性近似的框架下，研究了稳定分层的两组分介质中的地转调节过程。我们证明，在该过程的最后阶段，温度和盐度的分布会生成一条固定的迹线，其水平不均匀性会在密度场中相互补偿。估算了在地转调整期间形成的静止盐雾分布的补偿水平。研究了流体动力稳定剪切流中补偿盐卤不均匀性的形成机理。我们表明，在这样的流动中，浮力（密度），压力和速度场的扰动随时间而衰减，而温度和盐度场的补偿扰动是由流动而没有衰减地带走的。根据动力学方程的显式解，可以看出，剪切流中温度和盐分补偿分布的演变通常会导致空间梯度的锐化。除其他外，该特征可能与海洋精细结构起源的一个因素有关：小规模的热盐卤不均匀性，其在密度的垂直分布平滑的背景下存在。

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