The vadose zone is the region between ground level and the upper limits of soil fully saturated with water. Hydrology in the zone is complex: nonlinear physical, chemical, and biological interactions all affect the transfer of heat, mass, and momentum between the atmosphere and the water table. This book takes an interdisciplinary approach to vadose zone hydrology, bringing together insights from soil science, hydrology, biology, chemistry, physics, and instrumentation design. The chapters present state-of-the-art research, focusing on new frontiers in theory, experiment, and management of soils. The collection addresses the full range of processes, from the pore-scale to field and landscape scales.
Contributors 1. Fundamentals of Transport Equation Formulation for Two-Phase Flow in Homogeneous and Heterogeneous Porous Media,M. Quintard and S. Whitaker 2. Incorporation of Interfacial Areas in Models of Two-Phase Flow,W.G. Gray, M.A. Celia, and P.C. Reeves 3. The Statistical Physics of Subsurface Solute Transport,G. Sposito 4. Soil Properties and Water Movement,J.-Y Parlange, T.S. Steenhuis, R. Haverkamp, D.A. Barry, P.J. Culligan, W.L. Hogarth, M.B. Parlange, P. Ross, and F. Stagnitti 5. Nonideal Transport of Reactive Solutes in Porous Media: Cutting Across History and Disciplines,M.L. Brusseau 6. Recent Advances in Vadose Zone Flow and Transport Modeling,M. Th. van Genuchten and E.A. Sudicky 7. Diffusion-Linked Microbial Metabolism in the Vadose Zone,J.E. Watson, R.F. Harris, Y. Liu, and W.R. Gardner 8. Persistence and Interphase Mass Transfer of Liquid Organic Contaminants in the Unsaturated Zone: Experimental Observations and Mathematical Modeling,L.M. Abriola, K.D. Pennell, W.J. Weber, Jr., J.R. Lang, and M.D. Wilkins 9. Coupling Vapor Transport and Transformation of Volatile Organic Chemicals,Y.H. El-Farhan, K.M. Scow, and D.E. Rolston 10. Evapol“m