EXPERIMENTAL STUDIES OF THE BEHAVIOR OF ELEMENTS OF THE CARBONATE SYSTEM OF SEA WATERS AS A RESULT OF THE ARRIVAL OF COASTAL ABRASION MATERIAL

Abstract

. The assessment of the intake of carbonates into the Sea of Azov in the process of coastal destruction is carried out based on data on the volumes of abrasive material entering the sea and the content of carbonate material in rocks in different periods of the twentieth century. The following relations can be stated: the share of abrasive material in the supply of solid terrigenous matter to the Sea of Azov in the last period is more than 50%, and in the supply of carbonate material – does not exceed 10% compared to other sources. A method was developed, experimental studies were performed and the first quantitative estimates of changes in the elements of the carbonate system (active reaction of the medium (pH) and total alkalinity) in the water of the Sea of Azov with different salinity as a result of soil (abrasive material containing carbonates) entering it during active wave action on the shores were obtained. The results of experimental studies can be considered from the point of view of identifying the main trends in the behavior of elements of the carbonate water system when soil enters it. We can draw a preliminary conclusion that the coastal abrasive material that has entered the seawater should be considered, first of all, as a source of calcium carbonate in bottom sediments due to the mechanism of adsorption of bicarbonate ion on solid particles of suspension (crystallization centers), as well as due to simple deposition on the bottom, since calcium and magnesium carbonates of soils are poorly soluble compounds.