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Application of multiple-point geostatistics on modelling groundwater flow and transport in a cross-bedded aquifer (Belgium)

Huysmans, Marijke ; Dassargues, Alain

Hydrogeology journal, 2009-12, Vol.17 (8), p.1901-1911 [Periódico revisado por pares]

Berlin/Heidelberg: Berlin/Heidelberg : Springer-Verlag

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Título:
Application of multiple-point geostatistics on modelling groundwater flow and transport in a cross-bedded aquifer (Belgium)
Autor: Huysmans, Marijke ; Dassargues, Alain
Assuntos: Aquatic Pollution ; Earth and Environmental Science ; Earth Sciences ; Engineering, computing & technology ; Geological, petroleum & mining engineering ; Geology ; Geophysics/Geodesy ; Groundwater ; Groundwater flow ; Géologie, ingénierie du pétrole & des mines ; Heterogeneity ; Hydrogeology ; Hydrology ; Hydrology/Water Resources ; Ingénierie, informatique & technologie ; Multiple-point geostatistics ; Sedimentary geology ; Sediments ; Solute transport ; Waste Water Technology ; Water Management ; Water Pollution Control ; Water Quality/Water Pollution
É parte de: Hydrogeology journal, 2009-12, Vol.17 (8), p.1901-1911
Notas: http://dx.doi.org/10.1007/s10040-009-0495-2
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Descrição: Sedimentological processes often result in complex three-dimensional subsurface heterogeneity of hydrogeological parameter values. Variogram-based stochastic approaches are often not able to describe heterogeneity in such complex geological environments. This work shows how multiple-point geostatistics can be applied in a realistic hydrogeological application to determine the impact of complex geological heterogeneity on groundwater flow and transport. The approach is applied to a real aquifer in Belgium that exhibits a complex sedimentary heterogeneity and anisotropy. A training image is constructed based on geological and hydrogeological field data. Multiple-point statistics are borrowed from this training image to simulate hydrofacies occurrence, while intrafacies permeability variability is simulated using conventional variogram-based geostatistical methods. The simulated hydraulic conductivity realizations are used as input to a groundwater flow and transport model to investigate the effect of small-scale sedimentary heterogeneity on contaminant plume migration. Results show that small-scale sedimentary heterogeneity has a significant effect on contaminant transport in the studied aquifer. The uncertainty on the spatial facies distribution and intrafacies hydraulic conductivity distribution results in a significant uncertainty on the calculated concentration distribution. Comparison with standard variogram-based techniques shows that multiple-point geostatistics allow better reproduction of irregularly shaped low-permeability clay drapes that influence solute transport.
Editor: Berlin/Heidelberg: Berlin/Heidelberg : Springer-Verlag
Idioma: Inglês

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Application of multiple-point geostatistics on modelling groundwater flow and transport in a cross-bedded aquifer (Belgium)

Huysmans, Marijke ; Dassargues, Alain

Berlin/Heidelberg: Berlin/Heidelberg : Springer-Verlag

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