Vol. 30, issue 09, article # 4

Kukushkin A.S. Spatial and temporal variability of the water transparency distribution in the north-western Black Sea. // Optika Atmosfery i Okeana. 2017. V. 30. No. 09. P. 750–762 [in Russian].
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Abstract:

According to the long-term (1963–2000) observational data on depth of the Secchi Disk visibility, the main peculiarities of the annual cycle of transparency distribution in the surface water layer of the north-western Black Sea are considered. The statistical estimates of the seasonal variations in the areas differing in the degree of influence of river and open-sea water flow on their hydrophysical parameters are derived. Intra-annual transparency variations in these areas are in a good agreement with the intra-annual variations in phytoplankton biomass and water salinity. It is shown that long-term (1950–2013) intra-annual seasonal transparency variations (according to the data measured and reconstructed by means of a neural network model) show a satisfactory agreement with the intra-annual variations in the hydrobiological parameters. The dependences of the variations in these parameters on the regional meteorological conditions within El Niño – Southern Oscillation period and within the period of its absence are studied.

Keywords:

transparency, phytoplankton biomass, chlorophyll a, river run-off, hydrometeorological conditions

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