Digital terrain model subsurface4/3/2024 ![]() ![]() Time discretization allows for consideration of time-variable rainfall rates. Spatial discretization allows for distributed terrain slope, soil parameters, moisture conditions, and rainfall inputs. Each basin element consists of a soil column in which hydraulic conductivity decreases with depth, in the form of an exponential function. The model uses spatial discretization into rectangular elements which correspond to the grid of a digital elevation map. The effect of local terrain slope and topography on subsurface flows and the development of areas of saturated soil is accounted for. The model accounts for both the infiltration excess and saturation excess mechanisms of runoff production from watersheds, and for lateral subsurface flows. This report presents a distributed, physically-based model of runoff generation in a catchment, for operation use in flood forecasting.
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |