Author(s):  O.V. Spesivyj, N.E. Zhukovsky and Y.A. Gagarin Air Force Academy, Voronezh, Russia

Ya.V. Pavlyuk, candidate of Sciences, Belgorod State National Research University, Belgorod, Russia, pavlyuk@bsu.edu.ru

N.S. Polumordvinov, Belgorod State National Research University, Belgorod, Russia

Issue:  Volume 42, №1

Rubric:  Earth sciences

Annotation:  A possibility of assessing the risk of silting-up of rivers by calculating the sediment transport and then comparing the sediment transporting capacity and sediment-production rate has been shown. A formula for calculating the sediment transporting capacity in relation to river flow, based on conventional hydraulics is presented. Analysis and forecasting of the dynamics of river flow allowed to develop a model of transport capacity of watercourses depending on the water content of the year. Modern representations of erosion-accumulation processes with remote relief analysis methods are integrated, which allowed estimating the amount of incoming sediment from the catchment to its closing point. The results of the calculation of the ecological tension in the catchment areas showed that the silting processes prevail in the rivers of the Belgorod region. The created risk maps for siltation of watercourses of two periods of time (low-water year and with a run-off rate) allow illustrating the spatio-temporal patterns of the situation change at catchments depending on climatic conditions.

Keywords:  sediment transporting capacity, erosion, silting, sediment load ratio, river basins, runoff, riverbed

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