Solute concentration and water content profiles were intensively measured in a 40x7 m2 plot to a depth of 1.0 m in an unsaturated sandy Andosol. A deterministic convection-dispersion model (CD) and stochastic model (SC) were used to simulate transport through the vadose zone. Comparison of the simulation results with the field experimental data showed that the CD model, with effective parameters Deff and veff described the mean concentration reasonably well. Failure of the SC model to suitably predict solute displacement does not negate the model’s validity. The failure only reflects the incorrect SC’s assumption that pore-scale dispersion has an insignificant impact on estimating mean concentration in this soil.
Field-scale solute transport modelling from horizontally variable local-scale transport parameters / Comegna, A.; Coppola, A.; Severino, G.; Sommella, Angelo. - STAMPA. - I:(2010), pp. .-.. (Intervento presentato al convegno International conference on agricultural engineering tenutosi a Clermont-Ferrand, France nel 6-8 September 2010).
Field-scale solute transport modelling from horizontally variable local-scale transport parameters
Severino G.;SOMMELLA, ANGELO
2010
Abstract
Solute concentration and water content profiles were intensively measured in a 40x7 m2 plot to a depth of 1.0 m in an unsaturated sandy Andosol. A deterministic convection-dispersion model (CD) and stochastic model (SC) were used to simulate transport through the vadose zone. Comparison of the simulation results with the field experimental data showed that the CD model, with effective parameters Deff and veff described the mean concentration reasonably well. Failure of the SC model to suitably predict solute displacement does not negate the model’s validity. The failure only reflects the incorrect SC’s assumption that pore-scale dispersion has an insignificant impact on estimating mean concentration in this soil.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
