A simplified model for estimating the expected areal-average infiltration at hillslope scale is presented. It considers a typical condition with coupled spatial heterogeneity of rainfall rate, r, and saturated hydraulic conductivity, Ks, both assumed as random variables. The model involves a series expansion of the local cumulative infiltration and is applicable within the range of variability of r and Ks which allows to disregard the run-on process. It was tested by comparison with Monte Carlo simulations over two soil types and for a large range of the coefficients of variation of both Ks and r. The results suggested that the model is an adequate approximate solution, fairly simple to use for practical purposes.
A Simplified Model for Areal-Average Infiltration with Spatial Heterogeneity of Rainfall and Saturated Hydraulic Conductivity
MORBIDELLI, Renato;CORRADINI, Corrado;SALTALIPPI, Carla;
2003
Abstract
A simplified model for estimating the expected areal-average infiltration at hillslope scale is presented. It considers a typical condition with coupled spatial heterogeneity of rainfall rate, r, and saturated hydraulic conductivity, Ks, both assumed as random variables. The model involves a series expansion of the local cumulative infiltration and is applicable within the range of variability of r and Ks which allows to disregard the run-on process. It was tested by comparison with Monte Carlo simulations over two soil types and for a large range of the coefficients of variation of both Ks and r. The results suggested that the model is an adequate approximate solution, fairly simple to use for practical purposes.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
