Sinking velocity of small particles in the Black Sea: Vertical distribution and seasonal variability from continuous Bio-Argo measurements of backscattering

2021 ◽  
pp. 103695
Author(s):  
A.A. Kubryakov ◽  
S.V. Stanichny
Keyword(s):  
Vertical Distribution ◽  
Black Sea ◽  
Seasonal Variability ◽  
The Black Sea ◽  
Small Particles ◽  
Sinking Velocity

scholarly journals Seasonal and Vertical Variability of Currents Energy in the Sub-Mesoscale Range on the Black Sea Shelf and in Its Central Part

2021 ◽  
Vol 28 (1) ◽  
Author(s):  
O. S. Puzina ◽  
A. A. Kubryakov ◽  
A. I. Mizyuk ◽  
◽  
◽  
...  
Keyword(s):  
Vertical Distribution ◽  
Water Transport ◽  
Black Sea ◽  
Mixed Layer ◽  
Seasonal Variability ◽  
Baroclinic Instability ◽  
The Black Sea ◽  
Mesoscale Currents ◽  
Vertical Variability

Purpose. The study is aimed at investigating seasonal variability and vertical distribution of the sub-mesoscale currents energy (scales L = 1 … 10 km, T = 1 … 10 days) in the deep and shelf zones of the Black Sea. Methods and Results. The study is based on the spectral analysis of the results obtained from the NEMO model numerical calculations performed with high spatial resolution 1 km. The analysis shows that the seasonal variability of the submesoscale energy is significantly different in deep and shelf zones of the basin. At the same time, in both regions, seasonal variation of energy of the sub-mesoscale currents with scales L < 10 rm (Esp) is in good agreement with that of the density fluctuations on the same scales. In the central part of the sea, the high values of Esp are concentrated in the upper mixed layer throughout the whole year. The Esp peak is observed in winter at the depths 0–40 m, which indicates the important role of baroclinic instability induced by the inhomogeneous distribution of the mixed layer depth (MLD) in the generation of sub-mesoscale processes. At the same time, in February in the central part of the northwestern shelf, an absolute minimum of (Esp) is observed. This minimum is caused by the complete mixing and barotropization of the water column. The Esp maximum values are observed in the shelf in September – October. This is related to the intensification of the brackish water transport from the river mouths by mesoscale eddies. In the autumn period high values of Esp in the shelf and deep part of the basin are observed in the deeper layer, compare to summer months .Variability of the Esp vertical distribution coincides to the time variation of MLD. Variability of the submesoscale energy is of a pulsating character with the short-term intensifications and weakenings. Such variability is significantly related to the passing of the mesoscale fronts and the cross-shelf water transport caused by the eddies and upwellings, which lead to the increase of the baroclinic instability. Conclusions. Analysis of the seasonal and vertical variability of the submesoscale currents in the Black Sea deep and shelf zones evidences about the decisive role of the baroclinic instability triggered mainly by the heterogeneity of MLD on their dynamics.

scholarly journals Influence of Seasonal Variability of the Wind Stress Vorticity on the Structure of the Black Sea Circulation

2018 ◽  
Vol 25 (5) ◽  
Author(s):  
A. А. Pavlushin ◽  
N. B. Shapiro ◽  
E. N. Mikhailova ◽  
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◽  
...  
Keyword(s):  
Black Sea ◽  
Wind Stress ◽  
Seasonal Variability ◽  
The Black Sea

Seasonal variability and the types of currents in the upper layer of the Black Sea

1992 ◽  
Vol 3 (3) ◽  
pp. 193-208 ◽  
Author(s):  
V. N. Eremeev ◽  
L. M. Ivanov ◽  
S. V. Kochergin ◽  
O. V. Mel'nichenko
Keyword(s):  
Black Sea ◽  
Seasonal Variability ◽  
The Black Sea

Vertical distribution of mesoplankton in the open area of the Black Sea

1985 ◽  
Vol 89 (1) ◽  
pp. 95-107 ◽  
Author(s):  
M. E. Vinogradov ◽  
M. V. Flint ◽  
E. A. Shushkina
Keyword(s):  
Vertical Distribution ◽  
Black Sea ◽  
The Black Sea ◽  
Open Area

Seasonal variability of the hydrologic-and-acoustic parameters on the Black Sea shelf off the South Crimea coast

1997 ◽  
Vol 8 (3) ◽  
pp. 179-184
Author(s):  
N. P. Bulgakov ◽  
V. N. Belokopytov ◽  
P. D. Lomakin
Keyword(s):  
Black Sea ◽  
Seasonal Variability ◽  
The Black Sea ◽  
The South ◽  
Acoustic Parameters
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