Document Type
Report
Publication Date
January 1980
Abstract
The effects and interactive effects on infiltration of parameters in the Brooks-Corey equation for defining the hydraulic properties of unsaturated soils are investigated by analyzing the results of numerical solutions of the unsaturated flow characteristics resulting from water applied on a circular surface area. The soil parameters are allowed to vary continuously as a function of depth. The parameters that have been allowed to vary separately and in pairs are: (1) The pore size distribution exponent, (2) Pb- The bubbling pressure, (3) Sr- The residual saturation, (4) n- The soil porosity and (5) Ko- The saturated hydraulic conductivity. The conclusions are: (1) heterogeneity of the soil defined by allowing any parameter to vary with depth has a significant effect on all infiltration characteristics, (2) there is a minor to insignificant interaction between the soil parameters, and (3) the additive law of effect can be used to determine the composite effect of several soil parameters varying simultaneously.
Recommended Citation
Nassehzadeh-Tabrizi, Abdolhossien and Jeppson, Roland W., "Influence of Unsaturated Hydraulic Properties on Infiltration from Circular Surface Areas" (1980). Reports. Paper 178.
https://digitalcommons.usu.edu/water_rep/178