Evaluating a single-class net deposition equation in overland flow conditions

摘要: [1] The movement of sediment and related pollutants in overland flow from the point erosion to a stream normally occurs through series deposition zones. Here we present evaluation new multiclass model transport these This simulates size-selective net as result simultaneous by settling nonselective reentrainment previously deposited [Hairsine et al., 2002; Sander 2002]. Multiclass models provide useful basis for simulating off-site effects soil erosion, but information on grain-size composition exported is crucial calibrating evaluating such models. Therefore was tested using detailed experimental data. Information amount deposition, distribution sediment, spatial pattern deposits collected during experiments. Calibration model, one part data, performed adjusting fraction power available minimizing errors between both simulated observed total outflow concentration sediment. Evaluation conducted, other over wide range conditions. The shows that equation capable reasonably size selectivity process. However, not correctly because simplifications used hydraulic model.