Unsaturated Flow in Hydrologic Modeling: Theory and Practice

ISBN-13: 9780792302117 / Angielski / Twarda / 1989 / 532 str.

H. J. Morel-Seytoux; Hubert J. Morel-Seytoux

Opis

These proceedings address how to use fundamental knowledge for better management of water resources. Sections cover: the perspective and fundamentals; components in the description; parameters estimation and numerical techniques; treatment of unsaturated zone in hydrologic models; and miscellaneous

Recenzje

`The overall presentation and terminology is the result of meticulous editing ..., the book is easily accessible to workers inside the fields of hydrology and soil science.'
J. Némec, World Meteorological Organization, vol. 39, no. 2, April 1990

Spis treści

1. Perspective and Fundamentals of Unsaturated Flow.- Background Concepts and Principles.- Multiphase Flow in Porous Media: Description at the Pore and Macroscopic Scale.- Flow of Water and Air in Soils: Theoretical and Experimental Aspects.- 2. Components in the Description of Unsaturated Flow.- Infiltration and Ponding Time.- Liquid Moisture Redistribution: Hydrologie Simulation and Spatial Variability.- Evaluation of the Hydrological Response of a Drainage Network.- Interflow.- Unsaturated Flow Induced by Evaporation and Transpiration.- Prediction of Water Table Mound Development and Aquifer Recharge from an Infiltrating Area.- 3. Parameters Estimation and Numerical Techniques.- Estimation of Soil Water Retention and Hydraulic Properties.- Remote Sensing of Watershed Characteristics and Rainfall Input.- Numerical Simulation of Richards Equation: Current Approaches and an Alternate Perspective.- 4. Treatment of Unsaturated Zone in Hydrologic Models.- Loss Rate Representation in the HEC-1 Watershed Model.- Comparative Evaluation of Unsaturated Flow Methods in Selected USDA Simulation Models.- The Unsaturated Components of SWATCH: A Multiprocess Watershed Model for Runoff Generation and Routing.- Spatially Distributed Modeling: Conceptual Approach, Coupling Surface Water and Groundwater.- Influence of Spatial Variability of Saturated Hydraulic Conductivity on the Infiltration Process.- 5. Miscellaneous.- Analytic Steady-State Solution to One-Dimensional Unsaturated Water Flow in Layered Soils.- The Constant Head Percolation Test-Improved Equipment and Possibilities of Assessing the Saturated Hydraulic Conductivity.- Mobility of Residual Phase Organics in the Vadose Zone.- The Movement of Water in Swelling Clays.- General List of Symbols.