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hydraulic properties
Focus Topic: Soil Hydraulic Properties

Soil hydraulic properties constitute the basis for understanding flow and transport processes and are important input properties in any simulations of vadose zone properties. In this focus topic methods are presented that allow prediction and characterization of soil hydraulic properties, with an emphasis on the moisture retention characteristic and the unsaturated hydraulic conductivity.
L. Zhuang, C.R. Bezerra Coelho, S.M. Hassanizadeh and M.Th. van Genuchten
Knowledge of the unsaturated soil hydraulic properties is essential for modeling water flow and solute transport processes in variably saturated subsurface systems. Various experimental setups have be...more
DongHao Ma, JiaBao Zhang and YunXuan Lu
Recently, a method based on the soil water flux (F)–saturation (Θ) relationship, F(Θ), assumed to be independent of time and soil properties, has become an important technique to simplify solving...more
Nicholas Thomas, K.E. Schilling, Antonio Arenas Amado, Matthew Streeter and Larry Weber
Modeling of spatial and vertical variability in soil hydraulic properties is a pervasive dilemma in computational hydrology. In an effort to provide guidance in inverse modeling of soil hydraulic prop...more
Lee-Ann K. Sills, Kevin G. Mumford and Greg A. Siemens
Experiments using transparent porous media, where the indices of refraction of the solid grains and the wetting fluid are matched, can be used to quantify fluid saturations from digital images. In thi...more
Morteza Khorshidi, Ning Lu and Alireza Khorshidi
The origin of matric potential in the tightly adsorbed soil water retention (SWR) regime, where matric potentials are generally less than −150 MPa, remains unsettled. Surface tension in soil pores a...more
Ali Moradi, Kathleen M. Smits, Ning Lu and John S. McCartney
In this study, we numerically and experimentally evaluated heat transfer in soils under unsaturated conditions in the context of simulating a laboratory-scale, three-dimensional soil-borehole thermal...more
Ullrich Dettmann and Michel Bechtold
We have developed a novel and simple approach that can be used to derive effective in situ soil water retention characteristics from field monitoring time series in peatlands. The simplicity of t...more
Guy Mizrahi, Alex Furman and Noam Weisbrod
Entrapped air effects on infiltration under ponding condition are important in many engineered systems such as soil aquifer treatment and managed aquifer recharge. Earlier studies found that under pon...more
Majdi R. Abou Najm and Nabil M. Atallah
Classic porous media flow experiments focus on water as the fluid of choice, thus limiting estimates of saturated hydraulic conductivity to a single averaged value that is rarely informative of the co...more
Marius Heinen and Gerben Bakker
According to the Richards equation, the capacity of a soil to hold and conduct water is determined by the water retention and hydraulic conductivity characteristics. Many mathematical relationships ha...more