Features of the winter hydrochemical regime of the upper Volga Reservoirs

[摘要] This article presents the results of a study of the winter hydrochemical regime of the reservoirs of the Upper Volga basin. It has been found that in winter, when there is water drawdown and a decrease in the volume of water, the concentrations of the main ions, nutrients, heavy metals, and oil products increase in comparison with other seasons of the year. Water masses of the Upper Volga reservoirs are characterized by low hardness, neutral pH and low chromaticity. Also noted was an increasing concentration of hydrocarbonates towards the bottom.

[发布机构] Ivankovo Research Station, Institute of Water Problems of the Russian Academy of Sciences, Konakovo, Russia^1;Tver State Technical University, Tver, Russia^2

[学科分类] 自然科学（综合）

[关键词] Hydrochemicals;Low hardness;Main ions;Neutral pH;Oil product;Water mass