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- W1991723480 abstract "Surface runoff and sediment production at different spatial and temporal distribution in watersheds during the rainfall-runoff-soil erosion processes is of great importance for understanding the hydrological and soil erosion mechanism. In this study, a new method/sensor capable of taking automatic measurements of sediment laden runoff flow rates and sediment concentration and data logging systems was applied to outlet of main channel and sub-channels of a laboratory catchment. Rainfall simulations were conducted under 4 rainfall intensities of 25, 50, 75 and 120mm/h and 3 rainfall duration of 5min, 10min and 15min. The primary results indicated that the runoff and sedimentation processes include fast rising limb and recession processes and flat crest segment. The slope of rising and recession curves increased with the increment of rainfall intensity. Meanwhile, the duration of the crest segment was proportion to rainfall duration. The runoff process of main channel delayed to that in sub-channel while the sediment process delays to runoff process. The overall averaged relative error of the measured flow rates by the flow gauge and those made manually was 2.02%. The results provide demanded data for process-based hydrology and erosion prediction models. This onsite and accurate experimental investigation was meaningful for understanding the runoff process and simulating the mechanism of erosion in watershed." @default.
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- W1991723480 date "2007-01-01" @default.
- W1991723480 modified "2023-09-23" @default.
- W1991723480 title "Laboratory Experimental Study on Runoff and Erosion Processes from a Small Catchment under Rainfall-simulator" @default.
- W1991723480 doi "https://doi.org/10.13031/2013.23214" @default.
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