Explicit formulae for soil water diffusivity using the one-step outflow technique

Soil Science Society of America Journal

Volumn 71, Issue 6, 2007, Pages 1685-1693

  Valiantzas, J D ^a   Londra, P ^a   Sassalou, A ^a  

^a AGRICULTURAL UNIVERSITY OF ATHENS   (Greece)

Author keywords

[No Author keywords available]

Indexed keywords

CURVE FITTING; DIFFUSION; FLOW OF WATER; PARAMETER ESTIMATION;

ALGEBRAIC FORMULAE; OUTFLOW CURVE; SOIL WATER DIFFUSIVITY;

SOIL SURVEYS;

CURVE FITTING; DIFFUSION; FLOW OF WATER; PARAMETER ESTIMATION; SOIL SURVEYS;

DIFFUSIVITY; ERROR ANALYSIS; FINITE DIFFERENCE METHOD; OUTFLOW; SOIL WATER; WATER CONTENT;

EID: 36448987964     PISSN: 03615995     EISSN: None     Source Type: Journal    
DOI: 10.2136/sssaj2006.0357     Document Type: Article

References (30)

1. Boubouka-Sassalou, A. 1996. The effect of cultivation ptactices and climatological conditions on the soil hydraulic properties of the upper soil layer. Ph.D. diss. Dep. of Nat. Resour. Manage. and Agric. Eng., Agric. Univ. of Athens, Athens, Greece.
2. Brooks, R.H., and A.T. Corey. 1964. Hydraulic properties of porous media. Hydrol. Pap. 3, Civ. Eng. Dep., Colorado State Univ., Fort Collins.
3. Burdine, N.T. 1953. Relative permeability calculations from pore-size distribution data. Pet. Trans. Am. Inst. Min. Metall. Eng. 198:71-77.
4. Childs, E.C., and N. Collis-George. 1950. The permeability of porous materials. Proc. R. Soc. London Ser. A 201:392-405.
5. Doering, E.J. 1965. Soil water diffusivity by the one-step method. Soil Sci. 99:322-326.
6. Eching, S.O., and J.W. Hopmans. 1993. Optimization of hydraulic functions from transient outflow and soil water pressure data. Soil Sci. Soc. Am. J. 57:1167-1175.
7. Eching, S.O., J.W. Hopmans, and O. Wendroth. 1994. Unsaturated hydraulic conductivity from transient multistep outflow and soil water pressure data. Soil Sci. Soc. Am. J. 58:687-695.
8. Gardner, W.R. 1962. Note on the separation and solution of diffusion type equations. Soil Sci. Soc. Am. Proc. 26:404.
9. Green, T.W., Z. Paydar, H.P. Cresswell, and R.J. Drinkwater. 1998. Laboratory outflow technique for measurement of soil water diffusivity and hydraulic conductivity. Tech. Rep. 12/98. CSIRO, Australia.
10. Gupta, S.C., D.A. Farrel, and W.E. Larson. 1974. Determining effective soil water diffusivities from one-step outflow experiments. Soil Sci. Soc. Am. J. 38:710-716.
11. Haines, W.B. 1930. Studies in the physical properties of soils. V. The hysteresis effect in capillary properties and the modes of moisture distribution associated therewith. J. Agric. Sci. 20:97-116.
12. 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.
13. Kool, J.B., J.C. Parker, and M.Th. van Genuchten. 1987. Parameter estimation for unsaturated flow and transport models - A review. J. Hydrol. 91:255-293.
14. Londra, P. 2001. Moisture-aeration balance of substrates as developed under different irrigation treatments. Ph.D. diss. Dep. of Nat. Resour. Manage. and Agric. Eng., Agric. Univ. of Athens, Athens, Greece.
15. Mualem, Y. 1976. A new model for predicting the hydraulic conductivity of unsaturated porous media. Water Resour. Res. 12:513-522.
16. Parker, J.C., J.B. Kool, and M.Th. van Genuchten. 1985. Determining soil hydraulic properties from one-step outflow experiments by parameter estimation: II. Experimental studies. Soil Sci. Soc. Am. J. 49:1354-1359.
17. Passioura, J.B. 1976. Determining soil water diffusivities from one step outflow experiments. Aust. J. Soil Res. 15:1-8.
18. Poulovassilis, A., M. Polychronides, and P. Kerkides. 1988. Evaluation of various computational schemes in calculating unsaturated hydraulic conductivity. Agric. Water Manage. 13:317-327.
19. Šimůnek, J., M. Sejna, and M.Th. van Genuchten. 1998. The HYDRUS-1D software package for simulating the one-dimensional movement of water, heat, and multiple solutes in variably-saturated media. U.S. Salinity Lab., Riverside, CA.
20. Talsma, T. 1985. Prediction of hydraulic conductivity from soil water retention data. Soil Sci. 140:184-188.
21. Tokunaga, T.K. 1988. Laboratory permeability errors from annular wall flow. Soil Sci. Soc. Am. J. 52:24-27.
22. Valiantzas, J.D. 1989. A simple approximate equation to calculate diffusivities from one-step outflow experiments. Soil Sci. Soc. Am. J. 53:342-349.
23. Valiantzas, J.D. 1990. Analysis of outflow experiments subject to significant plate impedance. Water Resour. Res. 26:2921-2929.
24. Valiantzas, J.D., and P.G. Kerkides. 1990. A simple iterative method for simultaneous determination of soil hydraulic properties from one-step outflow data. Water Resour. Res. 26:143-152.
25. Valiantzas, J.D., P.G. Kerkides, and A. Poulovassilis. 1988. An improvement to the one-step outflow method for the determination of soil water diffusivities. Water Resour. Res. 24:1911-1920.
26. Valiantzas, J.D., and A. Sassalou. 1991. Laboratory determination of unsaturated hydraulic conductivity using a generalized-form hydraulic model. J. Hydrol. 128:293-304.
27. van Dam, J.C., J.N.M. Strieker, and P. Droogers. 1990. From one-step to multistep: Determination of soil hydraulic functions by outflow experiments. Rep. 7. Dep. of Hydrol., Soil Phys. and Hydraul., Wageningen Agric. Univ., Wageningen, the Netherlands.
28. van Dam, J.C., J.N.M. Strieker, and P. Droogers. 1992. Inverse method for determining soil hydraulic functions from one-step outflow experiments. Soil Sci. Soc. Am. J. 56:1042-1050.
29. van Dam, J.C., J.N.M. Strieker, and P. Droogers. 1994. Inverse method to determine soil hydraulic functions from multistep outflow experiments. Soil Sci. Soc. Am. J. 58:647-652.
30. van Genuchten, M.Th. 1980. A closed-form equation for predicting the hydraulic conductivity of unsaturated soils. Soil Sci. Soc. Am. J. 44:892-898.