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Experimental estimation of the coefficient of vertical turbulent exchange in a stratified layer of the black sea near the continental slope

机译：大陆坡附近黑海分层层中垂直湍流交换系数的实验估算

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On the basis of the data of field measurements, we present the results of numerical analysis of the intensity of vertical turbulent exchange in stratified layers of the Black Sea in the region of the shelf–continental-slope boundary depending on the local stratification. The experiments were carried out within the framework of the GEF/BSERP and Black Sea-2004 international projects. The data were obtained by using a probing version of the Sigma-1 measuring complex. In processing the data of measurements, we apply a procedure of evaluation of the coefficient of vertical turbulent diffusion depending on the external conditions based on the analysis of the spectra of the gradient of temperature fluctuations. For the two studied regions of the shelf, the coefficients of turbulent exchange turn out to be much higher (by about an order of magnitude) than for the open sea under similar conditions. This can be explained by the specific features of the bottom topography affecting the dynamics of quasiinertial waves playing to role of the main causes of small-scale mixing and vertical diffusion.
机译：基于现场测量的数据，我们给出了根据局部分层情况对黑海分层层中架子-大陆-斜坡边界区域内的垂直湍流交换强度进行数值分析的结果。实验是在GEF / BSERP和Black Sea-2004国际项目的框架内进行的。通过使用Sigma-1测量复合体的探测版本获得数据。在处理测量数据时，我们基于对温度波动梯度谱的分析，根据外部条件应用了评估垂直湍流扩散系数的程序。在两个相似的条件下，对于架子的两个研究区域，湍流交换的系数要比公海大得多（大约一个数量级）。这可以由底部地形的特定特征来解释，这些特征影响准微波的动力学，而准微波是小比例混合和垂直扩散的主要原因。

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