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WATER FLOW IN SOIL MACROPORES II. A COMBINED FLOW MODEL

WATER FLOW IN SOIL MACROPORES II. A COMBINED FLOW MODEL,10.1111/j.1365-2389.1981.tb01682.x,European Journal of Soil Science,K. SEVEN,P. GERMANN

WATER FLOW IN SOIL MACROPORES II. A COMBINED FLOW MODEL   (Citations: 111)
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Journal: European Journal of Soil Science - EUR J SOIL SCI , vol. 32, no. 1, pp. 15-29, 1981
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    • ... of pesticide transport in soils can be divided into two main categories: (1) chromatographic flow (CF) models based on the differential convection-diffusion equation of substances transfer in the soil, which do not consider macropores, fissures, etc, and (2) models accounting for selective (preferential) flows (PF models) caused by the presence of swelling and shrinkage cracks, interpedal fissures, and macropores of different origin [8]...
    • ...In a real soil, no uniform and stationary moisture front is observed, primarily because of the movement of substances through macropores and cracks [8]...

    E. V. Sheinet al. Sensitivity assessment, adjustment, and comparison of mathematical mod...

    • ...The mathematical structure of this expression is similar to the kinematic wave approach for describing film flow in macropores [Beven and Germann, 1981] and to the macropore flow model of Jarvis [1994]...

    A. Peterset al. A simple model for describing hydraulic conductivity in unsaturated po...

    • ...Different conduit shapes may be applied in combination [Beven and Germann, 1981]...

    John R. Nimmo. Simple predictions of maximum transport rate in unsaturated soil and r...

    • ...Beven & Germann, 1981; Germann, 1985, 1990) whose volume balance is: dqldt + cdqldz = 0 (10)...

    PETER F. GERMANNet al. Dissipation of momentum during flow in soils

    • ...The model was applied to Beven and Germann (1981) simulation data as a result of different combination of soil-water characteristics in the micropore and macropore domains (Table 1). The model simulation was also carried out for Weyman’s (1970) experimental hillslope observations, and using drainage discharge data from a soil trough measured by Hewlett and Hibbert (1963) at the Coweeta Hydrological Laboratory...
    • ...The results of the model simulation for one- and two-domain soil systems are compared with that of Beven and Germann (1981) in terms of moisture profile and cumulative infiltration...
    • ...The comparison of moisture profile for a one-domain soil system shows that the timing and distribution of moisture over depth are in good agreement with that produced by the Beven and Germann (1981) model...

    N. M. Shakyaet al. Modelling of hillslope runoff processes

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