Abstract
From June 7 to July 2, 2022, for the first time, information on the fluctuation characteristics of the flow in the stratified layers of the Black Sea was obtained with data on the vertical distribution of oxygen, chlorophyll A and turbidity at depths up to more than 900 m on cruise 122 of the R/V Professor Vodyanitsky. Studies in this region included obtaining the dependences of the vertical turbulent diffusion coefficient K on the buoyancy frequency N and on the depth z according to the pulsation characteristics of the flow. Calculation results were compared with the results of a 1.5D vertical turbulent exchange model, as well as the hydrophysical features general analysis of the region under study. Data analysis showed the presence of several layers with different characteristic features of mixing in them. The obtained power-law approximations of the dependences K ≌ A · Nα in these layers showed good convergence with the model ones in the power part.
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Acknowledgements
The study was carried out within the framework of the state task FNNN-2021-0004 (code “Oceanological processes”) and with the grant support of the Russian Science Foundation project No. 22-17-00150 (code “Turbulent structure”).
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Kazakov, D.A., Pavlov, M.I., Chukharev, A.M. (2023). “1.5D” Vertical Turbulent Exchange Model Verification Based on Microstructural Probe Data on Cruise 122 of the R/V Professor Vodyanitsky. In: Chaplina, T. (eds) Complex Investigation of the World Ocean (CIWO-2023). CIWO 2023. Springer Proceedings in Earth and Environmental Sciences. Springer, Cham. https://doi.org/10.1007/978-3-031-47851-2_7
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