Infiltration Measurements for Soil Hydraulic Characterization

Foreword.- 1AN INTRODUCTION TO SOIL AND WATER INFILTRATION.- 1.1 Generalcharacteristics of soil.-1.2 Soil water content and potential.- 1.3 Flow ofwater in soils.- 1.4 Infiltration process and equations.- 1.4.1 Gravity freewater absorption.- 1.4.2 Green and Ampt model for infiltration.- 1.4.3 Philipinfiltration equation for capillary and gravity driven infiltration.- 1.4.4Sorptivity and flux concentration function
1.4.5 General infiltration solution of Parlange.- 1.4.6 Extension to 3D waterinfiltration below a disc source.- References.- 2 SATURATED SOIL HYDRAULIC CONDUCTIVITY.- 2.1 Well or boreholepermeameters.- 2.1.1 Steady flow under constant head in uncased boreholes.- 2.1.2Steady flow under constant head in cased boreholes.- 2.1.3 Transient flow underconstant head in cased and uncased boreholes.- 2.1.4 Falling-head flow in casedboreholes.- 2.2 Ring infiltrometers.- 2.2.1 Single-ring pressure infiltrometer.-2.2.2 Other single-ring approaches.- 2.2.3 Double-ring infiltrometer.- 2.2.4Simplified falling head technique.- 2.3 Dripper or point-source method.- References.-3 UNSATURATED SOIL HYDRAULIC PROPERTIES.-3.1 Tension or disk infiltrometer.- 3.1.1 Basis of the technique.- 3.1.2Apparatus and procedures.- 3.1.3 Analysis of steady-state flow.- 3.1.4 Analysisof transient flow.- 3.1.5 Numerical inversion of tension disk infiltrometerdata.- 3.1.6 Particular devices.- 3.1.7 Hydraulic contact at the infiltrationsurface.- 3.1.8 Applying the tension infiltrometer on sloping land.- 3.2 BEST -Beerkan estimation of soil transfer parameters procedure.- 3.2.1 Soil hydrauliccharacteristic curves
3.2.2 Soil particle-size distribution, bulk density and water content.- 3.2.3Water infiltration experiments.- 3.2.4 Estimating shape parameters by invertingparticle-size distribution data.- 3.2.5 Estimating scale parameters byinverting water infiltration data.- 3.2.6 Issues on estimation of shapeparameters.- 3.2.7 Issues on estimationof scale parameters.- 3.2.8