American Journal of Geophysics, Geochemistry and Geosystems
Articles Information
American Journal of Geophysics, Geochemistry and Geosystems, Vol.3, No.1, Feb. 2017, Pub. Date: Aug. 1, 2017
Estimating Hydraulic Properties of Unsaturated Soil Using a Single Tensiometer
Pages: 1-4 Views: 130 Downloads: 149
Authors
[01] Sabri Kanzari, National Institute of Research of Rural Engineering, Waters and Forests of Tunis, INRGREF, Laboratory of Rural Engineering, University of Carthage, Ariana, Tunisia.
[02] Mourad Rezig, National Institute of Research of Rural Engineering, Waters and Forests of Tunis, INRGREF, Laboratory of Rural Engineering, University of Carthage, Ariana, Tunisia.
[03] Béchir Ben Nouna, National Institute of Research of Rural Engineering, Waters and Forests of Tunis, INRGREF, Laboratory of Rural Engineering, University of Carthage, Ariana, Tunisia.
Abstract
Determination of the hydraulic properties of unsaturated soils is essential for the modeling of water flow and solutes transport. Methods of measuring these parameters are often expensive. In this study, a laboratory experiment is presented for the characterization of the hydraulic properties based on the principle of the evaporation method. It is based on following the variation of the water content by the gravimetric method and the pressure head by a tensiometer along a drying cycle of a small sample of soil. The measured retention curves are adjusted on the model of van Genuchten by the RETC software and are then compared with values measured by the pressure chamber method (reference method). The statistical evaluation shows the validity of this simple method for the measurement of the retention curves of unsaturated soils and for the estimation of the hydraulic properties.
Keywords
Unsaturated Soils, Hydraulic Properites, Parameter Optimization, RETC, Soil Retention Curve
References
[01] Schaap, M. G., F. J. Leij and M Th. van Genuchten, 2001. Rosetta: A computer program for estimating soil hydraulic parameters with hierarchical pedotransfer functions. J. Hydrol., 251: 163-176.
[02] Ghanbarlan-Alavijeh, B., A. Liaghat, G. H. Huang and M. Th van Genuchten, 2010. Estimation of the van Genuchten soil water retention proprieties from soil textural data. Pedosphere, 4: 456-465.
[03] Abbasi, Y., B. Ghanbarian-Alavijeh, A. M. Lighat and M. Shorafa, 2011. Evaluation of pedotransfer functions for estimating soil water retention of saline and saline-alkali soils of Iran. Pedosphere, 21(2): 230-237.
[04] Abdelbaki M. A., 2016. Evaluation of pedotransfer functions for predicting soil bulk density for U.S. soils. Ain Shams Engineering Journal, In Press, Corrected Proof. http://doi.org/10.1016/j.asej.2016.12.002
[05] Simunek, J., 2005. Estimating soil hydraulic parameters from transient flow experiments in a centrifuge using parameter optimization technique. Water Resources Res., 41: 1-9.
[06] Wesseling, J. G., C. J. Ritsema, J. Stotle, K. Oostindie and L. W. Dekker, 2008. Describing the soil physical characteristics of soil samples with cubical splines. Transport Porous Med., 71: 289-309.
[07] Kanzari S., Hachicha M. and Bouhlila R., 2014. Simple Evaporation Method for Estimating Soil Water Retention Properties of an Unsaturated Zone in Bouhajla (Kairouan - Central Tunisia). The Experiment Journal, 26(4): 1834-1843.
[08] Siltecho S., Hammecker C., Sriboonlue V., Clermont-Dauphin C., Trelo-ges V., Antonino A. C. D. and Angulo-Jaramillo R., 2015. Use of field and laboratory methods for estimating unsaturated hydraulic properties under different land uses. Hydrol. Earth Syst. Sci., 19: 1193–1207.
[09] Wind, G. P. 1968. Capillary conductivity data estimated by a simple method. p.181–191. In R. E. Rijtema and H. Wassink (ed.) Water in the Unsaturated Zone: Proc. UNESCO/IASH Symp., Wageningen, the Netherlands
[10] Fujimaki, H. and M. Inoue, 2003. A transient evaporation method for determining soil hydraulic proprieties at low pressure. Vadose Zone J., 2: 400-408.
[11] Schindler, U., W. Durner, G. von Unold and L. Muller, 2010. Evaporation Method for estimating measuring unsaturated hydraulic properties of soils: extending the measurement range. Soil Physics, 74: 1071-1083.
[12] Schelle, H., S. C. Iden, A. Peters and W. Durner, 2010. Analysis of the agreement of soil hydraulic properties obtained from multistep-outflow and evaporation methods. Vadose Zone J., 9: 1080-1091.
[13] Wessolek, G., R. Plagge, F. J. Leij and M. Th. van Genuchten, 1994. Analysing problems in describing field and laboratory measured soil hydraulic properties. Geoderma 64, 93-110.
[14] Kanzari S., Hachicha M. and Bouhlila R., 2012. Laboratory Method for Estimating Soil Water Retention Properties of an Unsaturated Soils. Walailak Journal of Science and Technology, 9(4): 361-367.
[15] Simunek, J., O. Wenderworth and M. Th. van Genuchten, 1998. Parameter estimation analysis of the evaporation method for determining soil hydraulic properties. Soil Sci. Soc. Am. J., 62: 894-905.
[16] van Genuchtenn MT., F. T. Leji and SR. Yates, 1991. The RETC Code for quantifying the hydraulic functions of unsaturated soils. U. S Department of Agriculture, Agricultural Research Service Riverside, pp: 117.
[17] van Genuchtenn M. T., 1980. A closed-form equation for predicting the hydraulic conductivity of unsaturated soils. Soil Sci. Soc. Am. J., 44: 892-898.
[18] Kool, J. B., J. C. Parker and M. Th van Genuchten, 1985. Determining Soil Hydraulic Properties from One-step Outflow Experiments by Parameter Estimation: I. Theory and Numerical Studies. Soil Sci. Soc. Am. J., 49: 1348-1354.
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