Solute transport by surface runoff from low angle slopes
Walton, R.S., Volker, R.E. and Smettem, K.R.J.ORCID: 0000-0003-2650-4429
(1994)
Solute transport by surface runoff from low angle slopes.
In: Proceedings of the Water Down Under 1994 Conference. Part 3, 21 - 25 November, Adelaide, Australia
Abstract
A mathematical model describing the exchange of solute from soil water to overland flow is presented. The model assumes that during infiltration a finite amount of chemical remains resident at the soil surface and is not convected with the infiltrating water. This solute is then transferred to the surface water via diffusion; driven by the concentration difference between the soil water and overland flow. A small scale field runoff trial was used to validate the model. Bromide was applied to the surface of three 18 m long by 1.5 m wide plots which were subsequently irrigated with a microjet sprinkler system. Runoff collected from the plots was analysed for bromide. The experimental data were in excellent agreement with model predictions.
Item Type: | Conference Paper |
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Publisher: | Institution of Engineers, Australia |
URI: | http://researchrepository.murdoch.edu.au/id/eprint/38251 |
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