Impact of soil water flux on vadoze zone solute transport parameters
(2002) Communications in Soil Science and Plant Analysis — Vol. 33, n° 3-4, p. 479-492 (2002)
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- Abstract
- The transport processes of solutes in two soil columns filled with undisturbed soil material collected from a unsaturated sandy aquifer formation in Belgium subjected to a variable upper boundary condition were identified from breakthrough curves measured by means of time domain reflectometry (TDR). Solute breakthrough was measured with 3 TDR probes inserted into each soil column at three different depths at a 10 min time interval. In addition, soil water content and pressure head was measured at 3 different depths. Analytical solute transport models were used to estimate the solute dispersion coefficient and average pore-water velocity from the observed breakthrough curves. The results showed that the analytical solutions were suitable in fitting the observed solute transport. The dispersion coefficient was found to be a function of the soil depth and average pore-water velocity, imposed by the soil water flux. The mobile moisture content on the other hand was not correlated with the average pore-water velocity (R-2 = 0.0684) and the dispersion coefficient (R-2 = 0.0873).
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Chen, X., Vanclooster, M., & Pan, G. (2002). Impact of soil water flux on vadoze zone solute transport parameters. Communications in Soil Science and Plant Analysis, 33(3-4), 479-492. https://doi.org/10.1081/CSS-120002758 (Original work published 2002)