Saturation excess runoff is a relevant process which needs additional experimentaland modeling efforts. This work is focused on its numerical modeling. The final objectiveis the successive interpretation of ongoing experimental monitoring results intwo watersheds in different areas of Italy where the saturation excess runoff formationmechanism seems to be important. The numerical solution of the two-dimensionalRichards’ equation allows the evaluation of the sensitivity to the various influent parameters: rainfall intensity, soil properties, depth and initial water content, slope andhillslope length.Also the subsurface flow is simulated at the same time, allowing the evaluation of thedifferent characteristic times and dominances of the two processes, namely subsurfaceand surface runoff. Only steady runoff intensities are considered for the sake of simplifyingthe results interpretation, but unsteady ones can be easily implemented. Thesame holds for soil layering.
|Number of pages||1|
|Publication status||Published - 2005|