Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 311179
Title Simulation of water flow and bromide transport in a water repellent sandy soil using a one-dimensional convection-dispersion model
Author(s) Bosch, H. van den; Ritsema, C.J.; Boesten, J.J.T.I.; Dekker, L.W.; Hamminga, W.
Source Journal of Hydrology 215 (1999)1-4. - ISSN 0022-1694 - p. 172 - 187.
Department(s) Winand Staring Centre for Integrated Land, Soil and Water Research
Publication type Refereed Article in a scientific journal
Publication year 1999
Keyword(s) wiskundige modellen - waterstroming - bromide - zandgronden - convectie - dispersie - waterafstotende gronden - simulatiemodellen - transportprocessen - bodemwater - infiltratie - hydratatie - mathematical models - water flow - sandy soils - convection - dispersion - water repellent soils - simulation models - transport processes - soil water - infiltration - hydration
Categories Soil Physics
Abstract Water repellent soils are known to inhibit water infiltration, ultimately forcing water to flow via preferential paths through the vadose zone. To study water flow and transport in a water repellent sandy soil, a bromide tracer experiment was carried out, which started in the fall, after winter wheat had been sown. Field average soil water content and bromide profiles were determined seven times during a 474d period. A one-dimensional convection-dispersion model was used to simulate observed flow and transport. It was found that water content and bromide profiles could be successfully simulated. The main reason was that despite water repellency no distinct preferential flow occurred within this particular experimental field. Only wavy wetting fronts were observed. This was due to a uniform vegetation cover and a relatively thick A-horizon (30cm), which contrasts with known water repellent sandy soils with thin (10cm) top layers in which typical fingered flow patterns had previously been found.
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