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Title: A CONTRIBUTION TO THE STUDY OF THE PHENOMENON OF HORIZONTAL INFILTRATION

Author: G. Kargas and P. Κerkides

Year: 2009

Publisher: European Water Resources Association (EWRA)

Description:

In this work an attempt is made to compare experimental soil moisture profiles for a horizontal infiltration experiment (Poulovassilis, 1977) with calculated profiles obtained variously through the use of the computation code of HYDRUS 1D and through the semi-analytical solution of the appropriate diffusion equation when the soil water diffusivity is obtained directly from the experimental data. Necessary input data for running HYDRUS 1D are obtained in three different ways: First, the experimental data of the main wetting branch of the moisture retention curve (MRC) coupled with Κs ,the hydraulic conductivity at saturation, are used, second the predicted, according to the Parlange model (1976) main wetting branch of the MRC, when experimental data points of the main drying branch of the MRC are used and third the predicted, according to the Mualem model (1977) main wetting branch of the MRC, again when experimental data points of the main drying branch of the MRC, are used. In the previous three cases predicting appropriate hydraulic conductivity K(θ) relationship is obtained through the model of Mualem (1976). The comparison of the above soil moisture profiles leads to some useful comments and conclusions.