Infiltration Theory for Hydrologic Applications

Title Page......Page 1
Copyright......Page 2
Contents......Page 3
Preface......Page 6
Acknowledgment......Page 7
Brief History......Page 8
Runoff Mechanisms......Page 10
Engineering and Scientific Approaches To Hydrology
......Page 11
Objective and Scope of 
This Work......Page 12
Capillary Properties of Soil Water
......Page 14
Porous Media......Page 16
Darcy's Law......Page 19
Hydraulic Characteristics of Porous Media
......Page 20
Steady Flow Soil Water Relations......Page 21
Functional Representation of Hydraulic Characteristics
......Page 25
Summary......Page 30
Introduction......Page 31
Absorption: Gravity-Free Intake
......Page 33
Infiltration: Vertical Flow......Page 37
Mathematical Approximations for Soil Water Flow
......Page 40
Approximations for Soil Hydraulic Characteristics
......Page 42
Summary......Page 45
Introduction......Page 47
Integrable Forms of Richards' Equation
......Page 49
Solution of Nonlinear Diffusion Equation
......Page 52
Required Forms for Soil Characteristics
......Page 55
Solution of the Integrable Form
......Page 61
Discussion and Summary
......Page 66
Introduction......Page 68
Absorption......Page 70
Infiltration......Page 78
Stability of Flux-concentration Relation
......Page 90
Summary......Page 100
Introduction......Page 102
Time Of Ponding......Page 103
Time Explicit Approximations......Page 113
Applying the Infiltrability Modelsto Variable Rainfall Patterns
......Page 119
Summary......Page 123
Redistribution and Reinfiltration
......Page 124
Layered Soils......Page 127
Summary......Page 138
Introduction......Page 140
Drip Infiltrometers......Page 141
Ring Infiltrometers......Page 143
Permeameters......Page 146
Concluding Remarks......Page 161
Introduction......Page 163
General Surface Flow and Infiltration Interaction
......Page 164
Effect of Surface Relief on Surface Water Losses
......Page 166
Infiltration Heterogeneity and Runoff
......Page 168
Infiltration and "runon" Effects
......Page 183
Summary......Page 187
Appendices I. Derivation Of The Infiltration Integral from Richards' Equation.......Page 188
II. Attenuation of Characteristic Kinematic Shock in Soil Water Flow......Page 190
III. Finite Difference Solution Method for Richards' Equation......Page 193
IV. Computation of the Solution to Equations......Page 198
List of Symbols and Abbreviations......Page 201
References......Page 204
Index......Page 212