ВЛИЯНИЕ МОРФОМЕТРИЧЕСКИХ ХАРАКТЕРИСТИК ОВРАЖНО-БАЛОЧНЫХ СИСТЕМ НА ПЕРЕРАСПРЕДЕЛЕНИЕ НАНОСОВ В ИХ ДНИЩАХ

Abstract

Relationship of deposition rate on small basin bottoms with the bottom structure was studied. Morphometric anal-ysis and radioisotope method (|,7Cs) were used. Researches were carried out at Central Russian Upland. Empirical interrelations between the structure of small basins and the deposition rates were revealed. Basins with curved longi-tudinal profiles have an accumulative layer increasing with basin order. Basins with straightened profile are charac-terized by decreasing thickness of accumulation layer as order of basin is growing. Linear correlation between accu-mulation volumes and areas has been established: V =8175 + 48, where V - mid-annual volume of deposition on a basin bottom of any order, m3; S - basin area of this order, km1. The correlation between sediment accumulation rate and morphometric parameters of small basins may be used for estimation of total accumulation on the bottom for the "cesium" period.