Single-porosity and dual-porosity modeling of water flow and solute transport in subsurface-drained fields using effective field-scale parameters

Haws, Nathan W.; Rao, P. Suresh C.; Šimůnek, Jirka; Poyer, Irene C.

doi:10.1016/j.jhydrol.2005.03.035

Cited by 93 publications

(75 citation statements)

References 39 publications

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“…This finding is clearly opposite to what has been achieved by Haws et al (2005) but in accordance with the finding of McGuire et al (2007).…”

Section: "Preferential Structures" For Preferential Transportsupporting

confidence: 66%

“…Calibration and prediction of bromide plateau concentrations were only successful when using the 2-D mobile-immobile model approach. Haws et al (2005) compared a single-porosity and a dual-porosity approach based on HYDRUS-2-D (Šimůnek et al, 1999) to simulate tile drain discharge and the transport of applied chloride and bromide. Although both model approaches were able to reproduce the shape of measured cumulative outflow well, simulated transport deviated considerably from the observations.…”

Section: Introductionmentioning

confidence: 99%

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A novel explicit approach to model bromide and pesticide transport in connected soil structures

Klaus

Zehe

2011

Hydrol. Earth Syst. Sci.

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Abstract. The present study tests whether an explicit treatment of worm burrows and tile drains as connected structures is feasible for simulating water flow, bromide and pesticide transport in structured heterogeneous soils at hillslope scale. The essence is to represent worm burrows as morphologically connected paths of low flow resistance in a hillslope model. A recent Monte Carlo study (Klaus and Zehe, 2010, Hydrological Processes, 24, p. 1595-1609 revealed that this approach allowed successful reproduction of tile drain event discharge recorded during an irrigation experiment at a tile drained field site. However, several "hillslope architectures" that were all consistent with the available extensive data base allowed a good reproduction of tile drain flow response. Our second objective was thus to find out whether this "equifinality" in spatial model setups may be reduced when including bromide tracer data in the model falsification process. We thus simulated transport of bromide for the 13 spatial model setups that performed best with respect to reproduce tile drain event discharge, without any further calibration. All model setups allowed a very good prediction of the temporal dynamics of cumulated bromide leaching into the tile drain, while only four of them matched the accumulated water balance and accumulated bromide loss into the tile drain. The number of behavioural model architectures could thus be reduced to four. One of those setups was used for simulating transport of Isoproturon, using different parameter combinations to characterise adsorption according to the Footprint data base. Simulations could, however, only reproduce the observed leaching behaviour, when we allowed for retardation coefficients that were very close to one.

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“…This finding is clearly opposite to what has been achieved by Haws et al (2005) but in accordance with the finding of McGuire et al (2007).…”

Section: "Preferential Structures" For Preferential Transportsupporting

confidence: 66%

Section: Introductionmentioning

confidence: 99%

A novel explicit approach to model bromide and pesticide transport in connected soil structures

Klaus

Zehe

2011

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

show abstract

“…The 2D SPM and 2D MIM simulations matched the drainage hydrographs, but not solute breakthrough. They concluded that a hydrograph fit cannot be used as evidence of the physical meaning of model parameters (Haws et al, 2005). Similar conclusions were drawn in other studies (Gerke and Köhne, 2004;Köhne et al, 2006a;McGuire et al, 2007).…”

Section: D Two-region Approachessupporting

confidence: 65%

“…Modified HYDRUS-2D model was used in several studies comparing 2D-approaches based on SPM, MIM, or DPM for simulating PNE tracer transport in agricultural fields (e.g., Abbasi et al, 2003Abbasi et al, , 2004Köhne and Gerke, 2005;Haws et al, 2005;Köhne et al, 2006b). Abbasi et al (2003) compared the 2D MIM and SPM using inverse simulations of water flow and tracer movement at a sandy loam field plot with furrows (3 m × 3 m) in Phoenix, Arizona.…”

Section: D Two-region Approachesmentioning

confidence: 99%

“…Simulation results suggested that over 60% of the surface applied Br was immobilized by transfer into the stagnant soil water region, and that the 2D flow field induced by tile drains enhanced Br dispersion . Haws et al (2005) simulated water and solute fluxes from subsurface drains of two macroporous silty clay loam plots (48.5 m × 60 m) in agricultural fields in West Lafayette, Indiana. The 2D SPM and 2D MIM simulations matched the drainage hydrographs, but not solute breakthrough.…”

Section: D Two-region Approachesmentioning

confidence: 99%

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