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Single- and Dual-porosity Modelling of Multiple Tracer Transport Through Soil Columns: Effects of Initial Moisture and Mode of Application by T. Kätterer; B. Schmied; K. C. Abbaspour; R. Schulin is a Environmental Science article available to read on EtoBox.

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## Summary We investigated the effect of initial moisture contents and mode of application on the displacement of multiple conservative tracers through undisturbed columns of a Humic Gleysol. Bromide was applied at the soil surface and chloride was injected at 5 cm depth. The columns were irrigated with deuterium‐enriched water. A dual‐porosity model and two single‐porosity models were calibrated separately to Br^–^ and Cl^–^ elution curves in the two columns. Elution curves were almost identical for Br^–^ and Cl^–^ under initially wet conditions, whereas the displacement of Br^–^ was faster than that of Cl^–^ in the initially dry column, indicating rapid transport with preferential flow. Only the dual‐porosity model described the long‐tailing breakthrough of Cl^–^ in the initially dry column adequately. The parameter values giving acceptable fits for ‘Br dry’ were not compatible with the description of the three other elution curves, which could be adequately modelled with a single set of parameter values. The estimated set of common parameters was validated by comparing with the elution curves of deuterium water, nitrate and sulphate, as well as with resident tracer concentration

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Author

T. Kätterer; B. Schmied; K. C. Abbaspour; R. Schulin

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Royal Astronomical Society by Blackwell Scientific Publications; Wiley (ISSN 1351-0754)

Published

2001

Language

EN

Field

Environmental Science (Physical Sciences)