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Author (up) Cea, L.; Legout, C.; Grangeon, T.; Nord, G. openurl 
  Title Impact of model simplifications on soil erosion predictions: application of the GLUE methodology to a distributed event-based model at the hillslope scale Type Journal Article
  Year 2016 Publication Hydrological Processes Abbreviated Journal  
  Volume 30 Issue 7 Pages 1096-1113  
  Keywords  
  Abstract In this paper, we analyse how the performance and calibration of a distributed event-based soil erosion model at the hillslope scale is affected by different simplifications on the parameterizations used to compute the production of suspended sediment by rainfall and runoff. Six modelling scenarios of different complexity are used to evaluate the temporal variability of the sedimentograph at the outlet of a 60m long cultivated hillslope. The six scenarios are calibrated within the generalized likelihood uncertainty estimation framework in order to account for parameter uncertainty, and their performance is evaluated against experimental data registered during five storm events. The Nash-Sutcliffe efficiency, percent bias and coverage performance ratios show that the sedimentary response of the hillslope in terms of mass flux of eroded soil can be efficiently captured by a model structure including only two soil erodibility parameters, which control the rainfall and runoff production of suspended sediment. Increasing the number of parameters makes the calibration process more complex without increasing in a noticeable manner the predictive capability of the model. Copyright (c) 2015 John Wiley & Sons, Ltd.  
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  ISSN 0885-6087 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000373021600006 HYDRIMZ HYDRIMZ HYDRIMZ Approved no  
  Call Number IGE @ juliette.blanchet @ Serial 4120  
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