Concept and Application of Generalized Preferential Flow Model (GPFM)

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2007 Vol.12, Issue 5 Preview Page Next Page

Concept and Application of Generalized Preferential Flow Model (GPFM) Generalized Preferential Flow Model (GPFM)의 개념과 적용사례 연구: 김영진;타모 스테인휴이스;남경필;
Kim, Young-Jin;Steenhuis, Tammo;Nam, Kyoung-Phile;

31 October 2007. pp. 33 ~ 36

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Abstract

In recent years the convective-dispersive equation has been often discredited in predicting subsurface solute transport under field conditions due to presence of preferential flow paths. Kim et al. (2005) proposed a simple equation that can predict the breakthrough of solutes without excessive data requirements. In their Generalized Preferential Flow Model (GPFM), the soil is conceptually divided in a saturated distribution layer" near the surface and a "conveyance zone" with preferential flow paths below. In this study

Keywords

and compare it with a classical convective-dispersive model (CDM). With three parameters required-apparent water content of the distribution zone

we test the model with previously published data

키워드

and solute velocity and dispersion in the conveyance zone-GPFM was able to describe the breakthrough of solutes both through silty and sandy loam soils. Although both GPFM and CDM fitted the data well in visual

References

Akhtar, M.S., Steenhuis, T.S., Richards, B.K., and McBride, M.B., 2003, Chloride and lithium transport in large arrays of undisturbed silt loam and sandy loam soil columns, Vadose Zone J., 2, 715-72710.2136/vzj2003.0715
Kim, Y.-J., Darnault, C.J.G., Bailey, N.O., Parlange, J.-Y., and Steenhuis, T.S., 2005, Equation for Describing Solute Transport in Field Soils with Preferential Flow Paths, Soil Sci. Soc. Am. J., 69, 291-300
Kung, K-J.S., T.S. Steenhuis, E. Kladivko, T.J. Gish, G. Bubenzer, and C.S. Helling., 2000. Impact of preferential flow on the transport of adsorptive and non-adsorptive tracers, Soil Sci. Soc. Am. J., 64, 1290-129610.2136/sssaj2000.6441290x
Lawes, J.B., Gilbert, J.H., and Warington, R., On the Amount and Composition of the Rain and Drainage Water Collected at Rothamstead, Williams Clowes and Sons, Ltd., London, 167 pp. Originally published in J. Royal Agr. Soc. of England XVII (1881) : 241-279, 311-350; XVIII (1882) : 1-71 (1882)
Parker, J.C. and van Genuchten, M.Th., 1984, Determining Transport Parameters from Laboratory and Field Tracer Experiments, Virginia Ag. Exp. Station, Blacksburg. Bull., 84-3
Ritsema, C.J., Dekker, L.W., Nieber, J.L., and Steenhuis, T.S., 1998, Modeling and field evidence of finger formation and finger recurrence in a water repellent sandy soil, Water Resour. Res., 34, 555-56710.1029/97WR02407
Steenhuis, T.S., Boll, J., Shalit, G., Selker, J.S., and Merwin, I.A., 1994, A simple equation for predicting preferential flow solute concentrations, J. Environ. Qual., 23, 1058-106410.2134/jeq1994.00472425002300050030x
van der Molen, W.H., 1956, Desalinisation of saline soils as a column process, Soil Sci., 81, 1927

Information

Publisher :The Korean Society of Soil and Groundwater Environment
Publisher(Ko) :한국지하수토양환경학회
Journal Title :Journal of Soil and Groundwater Environment
Journal Title(Ko) :지하수토양환경
Volume : 12
No :5
Pages :33 ~ 36

[1] Akhtar, M.S., Steenhuis, T.S., Richards, B.K., and McBride, M.B., 2003, Chloride and lithium transport in large arrays of undisturbed silt loam and sandy loam soil columns, Vadose Zone J., 2, 715-72710.2136/vzj2003.0715

[2] Kim, Y.-J., Darnault, C.J.G., Bailey, N.O., Parlange, J.-Y., and Steenhuis, T.S., 2005, Equation for Describing Solute Transport in Field Soils with Preferential Flow Paths, Soil Sci. Soc. Am. J., 69, 291-300

[3] Kung, K-J.S., T.S. Steenhuis, E. Kladivko, T.J. Gish, G. Bubenzer, and C.S. Helling., 2000. Impact of preferential flow on the transport of adsorptive and non-adsorptive tracers, Soil Sci. Soc. Am. J., 64, 1290-129610.2136/sssaj2000.6441290x

[4] Lawes, J.B., Gilbert, J.H., and Warington, R., On the Amount and Composition of the Rain and Drainage Water Collected at Rothamstead, Williams Clowes and Sons, Ltd., London, 167 pp. Originally published in J. Royal Agr. Soc. of England XVII (1881) : 241-279, 311-350; XVIII (1882) : 1-71 (1882)

[5] Parker, J.C. and van Genuchten, M.Th., 1984, Determining Transport Parameters from Laboratory and Field Tracer Experiments, Virginia Ag. Exp. Station, Blacksburg. Bull., 84-3

[6] Ritsema, C.J., Dekker, L.W., Nieber, J.L., and Steenhuis, T.S., 1998, Modeling and field evidence of finger formation and finger recurrence in a water repellent sandy soil, Water Resour. Res., 34, 555-56710.1029/97WR02407

[7] Steenhuis, T.S., Boll, J., Shalit, G., Selker, J.S., and Merwin, I.A., 1994, A simple equation for predicting preferential flow solute concentrations, J. Environ. Qual., 23, 1058-106410.2134/jeq1994.00472425002300050030x

[8] van der Molen, W.H., 1956, Desalinisation of saline soils as a column process, Soil Sci., 81, 1927

Journal of Soil and Groundwater Environment ISSN:1598-6438(Print) 2287-8831(Online) 지하수토양환경

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