Riverbed and basin components of erosion and suspended sediments runoff within river basins: a new method of assessment

A. V. Gusarov

doi:10.15356/0435-4281-2013-2-23-38

Riverbed and basin components of erosion and suspended sediments runoff within river basins: a new method of assessment

A. V. Gusarov

https://doi.org/10.15356/0435-4281-2013-2-23-38

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Abstract

Sheet, rivulet, and gully erosion form the basin runoff. A new hydrological method of basin and riverbed components of erosion assessment is proposed. The method is based on functional dependence: r_i=А_эрIQ^µ , where r_i and Q – monthly averages water suspended sediments (SS) runoff, А_эр – empirical complex erosion coefficient, I – slope of riverbed, µ – power coefficient. This dependence was obtained for drought periods in different years with different low water runoff and was extrapolated on other phases of hydrological regime. This extrapolation allows calculating riverbed and basin components of SS runoff in its bulk multiyear average. Data of more than ten years observation on 124 small and average rivers of East European Plain, the Urals, East Carpathian, Cis-Caucasus, mountains of Middle Asia were used. The average share of riverbed erosion and SS runoff was shown to be 8.8±1.6% with minimum of 6.3±2.3% in the low mountain rivers and maximum of 11.8±3.9% in the plain river basins.

Keywords

river basin, erosion, riverbed erosion, basin erosion, water suspended sediments runoff, hydrological regime, extrapolation

About the Author

A. V. Gusarov

Kazan (Volga Region) Federal University, Kazan
Russian Federation

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For citations:

Gusarov A.V. Riverbed and basin components of erosion and suspended sediments runoff within river basins: a new method of assessment. Geomorfologiya. 2013;(2):23-38. (In Russ.) https://doi.org/10.15356/0435-4281-2013-2-23-38