FEATURES OF THE FORMATION OF THE CHEMICAL COMPOSITION OF WATER OF THE GLACIAL RIVER CHEREK-BEZENGI
The results of a 2013 study of the chemical composition of water of small glacial river Cherek-Bezengi in different phases of the water regime are presented in the article. The catchment area of the river Cherek-Bezengi is characterized by high-altitude zone, in connection with which the article provides dependence of the concentration of the main ions on the altitude of the catchment area and the water temperature along the river length. The effect of temperature on the concentration of ions in the is manifested most strongly for hydrocarbons and calcium. With increasing of water temperature at 3°C during the summer flood bicarbonates and calcium concentration increases more than two times (30-65 and 10-27 mg/L, respectively). In addition, the longitudinal profile of the river Cherek-Bezengi and the dependence of the amount of ions from the river length are presented in the article. It was revealed that the amount of ions in the winter period to a height of 1450 m almost unchanged, and a further fall of altitude the value of the amount of ions in the water of the river Cherek-Bezengi is doubled (118-208 mg/L). During the summer floods, and to an altitude of 1450 m, the value of the amount of ions does not change significantly. The dependence of the amount of ions to a further fall of altitude for summer floods are not so clearly expressed as for the winter low.