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The article presents a detailed study of the close relationship between the content of total dissolved iron (Fetotal), Fe2+, Fe3+ on the one hand and physical and chemical parameters (Eh, pH, salinity (S), water temperature, electrical conductivity (Cond), the content of molecular oxygen and its saturation percentage in the section "Don River - Sea of Azov" on the other under various weather conditions. Correlation coefficients, as a quantitative measure of the tightness of the connection, varied over a wide range...

The Sea of Azov is characterized not only by small sizes and depths for oceanic waters, but also by intensive water exchange with river waters and the waters of the Black sea. These features of the reservoir are superimposed by wind activity, which contributes to the formation of wind surges phenomena. Under their influence, the upper layer of bottom sediments is agitated, accompanied by the transition of previously deposited material into the water column. After the wind action is weakened, the reverse flow of re...