Transcription of Chapter 4 Soil Properties - David Tarboton
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Chapter 4 Soil Properties - David Tarboton
Copyright 2003 David G Tarboton , Utah State University Chapter 4 soil Properties Rainfall-Runoff Processes Chapter 4: 1 Chapter 4: soil Properties Infiltration is the movement of water into the soil . This is possible, because soil is not solid matter; instead it is a porous medium comprising a matrix of solid granular particles and voids that may be filled with air or water (Figure 21). Flow in a porous medium may be unsaturated when some of the voids are occupied by air, or saturated when all the voids are occupied by water. Considering the cross section of a porous medium illustrated in Figure 21, the porosity is defined as volumetotalvoidsofvolumen= (6) Figure 21. Cross section through an unsaturated porous medium (from Chow et al.)
Rainfall-Runoff Processes Chapter 4: 2 Referring to Figure 21, the soil particle density, ρm, is the weighted average density of the mineral grains making up a soil
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