Abstract
In an area with highly erodible Pleistocene loose sediments, investigations on the significance of different sediment production processes were carried out. Data obtained during storm events show that channel storage and flushing dominate the sediment loads of the 10.1 ha research basin. Only about 20% of sediments transported out of the basin are explicable by fluvial erosion on bare erosional scars. Calculations of sediment budgets for two-year periods by means of regression models for hillslope erosion by water and sediment loads of the receiving river, demonstrate that only 50% of the annual sediment load of the river can be explained by sediment production processes due to rainfall and running water on hillslopes. The rest of the annual sediment load results from gravitational processes, which mainly occur in winter during ablation periods. Therefore an alternation of sediment production by gravitational processes in winter and removal by fluvial processes during summer can be assumed.
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