Abdulkabir, M. O. and Beven, Keith J. and Reeves, A. D. (1996) Flow separation in undisturbed soil using multiple anionic tracers (3) unsteady core scale infiltration experiments. Hydrological Processes, 10 (11). pp. 1467-1482. ISSN 0885-6087Full text not available from this repository.
Solute transport through structured, undisturbed soil has been studied in transient, unsaturated experiments using columns from grass and woodland sites on the Lancaster University campus. Three anionic tracers have been used, bromide (Br-) and two fluorinated organic acids (pentraflurobenzoic acid and 2,6-diflurobenzoic acid). The process of displacement of stored water from undisturbed columns was investigated using successive inputs of different tracers under similar antecedent conditions. The results indicated that initial breakthrough was rapid, with a relative concentration of 0.8 being reached between 0.4 and 0.5 pore volumes of discharge. It was found that there was an apparent continued discharge of old water, stored in the column before any additions of tracer, even after the addition of a total of 4.9 and 5.4 pore volumes of water for the grass and woodland columns, respectively. The implications of the results of these tracer studies for modelling solute transport in structured soils are considered.
|Journal or Publication Title:||Hydrological Processes|
|Uncontrolled Keywords:||anionic tracers • soil water • solute transport • dispersion • undisturbed soil columns • infiltration • multicomponent mixing|
|Subjects:||G Geography. Anthropology. Recreation > GE Environmental Sciences|
|Departments:||Faculty of Science and Technology > Lancaster Environment Centre|
|Deposited On:||17 Feb 2009 09:19|
|Last Modified:||26 Jul 2012 15:54|
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