статья в журнале

En

Ecological Safety of Coastal and Shelf Zones of Sea

ISSN:24135577

2023

QEZCBF

The paper uses the results of measurements of salinity, temperature and current velocity profiles in three expeditions of the R/V Professor Vodyanitsky (22 April – 08 May, 29 June – 10 July, 03–19 September 2021) in the central sector of the northern Black Sea (31°–37° E, 43°–45° N) to study features of the spatial distribution of hydrophysical parameters in various seasons of 2021 and to compare them with the data of previous expedition studies in 2016–2019. The horizontal distributions of currents in the spring, summer and autumn expeditions of 2021 were analysed. The averaged profiles of current velocity, density, temperature, buoyancy frequency, and kinetic energy were considered. The vertical structure of water temperature reflects the persistent warming trend of the cold intermediate layer core derived earlier from the 2016–2019 data. Based on all 2016–2021 measurements, the vertical profiles of kinetic energy show decreasing values in the upper sea layer in summer and increasing values in spring, autumn and winter seasons of the year. The profiles can be approximated by linear relationships that cross zero at a density of 16.75 kg/m3. The seasonal variability of the average kinetic energy is traceable to the depth of occurrence of this particular isopycnic.

Black Sea, buoyancy frequency, cold intermediate layer, current velocity, density, kinetic energy, temperature

2024-05-15 21:19:54