Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Flow separation in undisturbed soil using multiple anionic tracers.
T2 - Part 3: Unsteady core-scale infiltration experiments
AU - Abdulkabir, M. O.
AU - Beven, K. J.
AU - Reeves, A. D.
PY - 1996/11
Y1 - 1996/11
N2 - 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.
AB - 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.
KW - Anionic tracers
KW - Dispersion
KW - Infiltration
KW - Multicomponent mixing
KW - Soil water
KW - Solute transport
KW - Undisturbed soil columns
U2 - 10.1002/(SICI)1099-1085(199611)10:11<1467::AID-HYP385>3.0.CO;2-R
DO - 10.1002/(SICI)1099-1085(199611)10:11<1467::AID-HYP385>3.0.CO;2-R
M3 - Journal article
VL - 10
SP - 1467
EP - 1482
JO - Hydrological Processes
JF - Hydrological Processes
SN - 0885-6087
IS - 11
ER -