Comment on “Influence of three-parameter conversion methods between van Genuchten and Brooks-Corey Functions on soil hydraulic properties and water-balance predictions” by Qingli Ma et al.
نویسندگان
چکیده
منابع مشابه
Conversion of the Modified Kovács Model Parameters to the Brooks & Corey and Van Genuchten Model Parameters for Granular Soils
The modified Kovács (MK) model can be considered as one of the most versatile predictive models available to estimate the unsaturated hydraulic functions. The MK model relies on basic geotechnical properties to obtain the water retention curve (WRC), which can then be used to define the relative permeability function. In addition, the model can also take into consideration hysteresis effects an...
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Soil water characteristic curve shows the relationship between soil water content and matric suction, which has an important role in water movement in the soil. The measurement of this curve is expensive and time-consuming in laboratory therefore, many methods have been proposed for its estimation including pedotransfer functions. By using the pedotransfer functions, soil water characteristic c...
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In order to assess hydraulics of LNAPLs in soil, the soil retention curves of petroleum and water were both determined through hanging column method. And, the hydraulic conductivity of petroleum and water were determined by steady head method. The water and petroleum hydraulic conductivities were 7.27 and 57.84 cm.day-1, respectively. The soil retention parameters were obtained based on van Gen...
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Soil hydraulic properties are needed in globaland regionalscale circulation models for hydrologic and climate forecasting. They are also necessary in pointand nonpoint-source contaminant transport models. Prediction accuracy of these models is highly dependent on the quality of the model parameters. Collecting the required soil hydraulic parameters by direct measurement at any model grid scale ...
متن کاملUnsaturated hydraulic conductivity function based on a soil fragmentation process
We present a new two-parameter expression for relative hydraulic conductivity (RHC) of partially saturated soils. It is based on the premise of Assouline et al. [1998] that soil structures evolve from a uniform random fragmentation process. This assumption allows us to derive hydraulic properties of soils (water retention curves and unsaturated hydraulic conductivity) from primary properties, s...
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ژورنال
عنوان ژورنال: Water Resources Research
سال: 2001
ISSN: 0043-1397
DOI: 10.1029/2000wr900348