Modeling preferential water flow and solute transport in unsaturated soil using the active region model
نویسندگان
چکیده
منابع مشابه
Solute transport along preferential flow paths in unsaturated fractures
Laboratory experiments were conducted to study solute transport along preferential flow paths in unsaturated, inclined fractures. Qualitative aspects of solute transport were identified in a miscible dye tracer experiment conducted in a transparent replica of a natural granite fracture. Additional experiments were conducted to measure the breakthrough curves of a conservative tracer introduced ...
متن کاملCharacterization of preferential solute transport in soil
CHAPTER L GENERAL INTRODUCTION 1 [ntroduction I Dissertation Organization 4 References 5 CHAPTER 2. EVALUATION OF A SIMPLE METHOD FOR ESTIMATING SOLUTE TRANSPORT PAR.\>4ETERS: LABORATORY STUDIES 9 Abstract 9 [ntroduction 10 Materials and Methods 13 Results and Discussion 16 Conclusions 22 References 23 CHAPTER 3. A TIME DOMAIN REFLECTOMETRY METHOD TO MEASURE IMMOBILE WATER CONTENT AND MASS EXCH...
متن کاملInverse Dual-Permeability Modeling of Preferential Water Flow in a Soil Column and Implications for Field-Scale Solute Transport
The question of whether or not soil hydraulic parameters of dualpermeability models (DPM) can be properly identified by inverse analysis of preferential water flow data has not been resolved to date. We applied a DPM based on two coupled Richards’ equations to compare the performance of inverse and forward simulations of laboratory preferential flow data. Infiltration and drainage experiments w...
متن کاملConnectivity due to preferential flow controls water flow and solute transport at the hillslope scale
Understanding the major controls on water flow and solute transport at the hillslope scale remains a major topic of research despite numerous hillslope experiments at different sites around the world. For example, the influence of lateral preferential flow due to pipes or macropores in the subsurface flow is still unresolved. Experiments show the often paradoxical finding of fast entry of event...
متن کامل78: Models of Water Flow and Solute Transport in the Unsaturated Zone
A large number of models for simulating water flow and solute transport in the unsaturated zone are now increasingly being used for a wide range of applications in both research and management. Modeling approaches range from relatively simple analytical and semianalytical solutions, to complex numerical codes. While analytical and semianalytical solutions are still popular for some applications...
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ژورنال
عنوان ژورنال: Environmental Earth Sciences
سال: 2010
ISSN: 1866-6280,1866-6299
DOI: 10.1007/s12665-010-0633-0