Derivation of Flow and Transport Parameters from Outcropping Sediments of the Neogene Aquifer, Belgium
GEOLOGICA BELGICA (2013) 16-3: 129-147 Derivation of flow and transport parameters from outcropping sediments of the Neogene aquifer, Belgium. Bart ROGIERS1-2, Koen BEERTEN1, Tuur SMEEKENS2, Dirk MALLANTS3, Matej GEDEON1, Marijke HUYSMANS2-4, Okke BATELAAN2-4-5 & Alani DASSARGUES2-6 1Institute fo r Environment, Health and Safety, Belgian Nuclear Research Centre (SCK'CEN), Boeretang 200, BE-2400 Mol, Belgium. 2 Dept, o f Earth and Environmental Sciences, KU Leuven, Celestijnenlaan 200e - bus 2410, BE-3001 Heverlee, Belgium. 3 Groundwater Hydrology Program, CSIRO Land and Water, Waite Road - Gate 4, Glen Osmond SA 5064, Australia. 4 Dept, o f Hydrology and Hydraulic Engineering, Vrije Universiteit Brussel, Pleinlaan 2, BE-1050 Brussels, Belgium. 5 School o f the Environment, Flinders University, GPO Box 2100, Adelaide XT 5001, Australia. 6 Hydrogeology and Environmental Geolog}’, Dept, o f Architecture, Geolog}’, Environment and Civil Engineering (AtGEnCo) and Aquapole, Université de Liège, B.52/3 Sart-Tilman, BE-4000 Liège, Belgium. ABSTRACT. Centimetre-scale saturated hydraulic conductivities(K) are derived from air permeability measurements on a selection of outcrops of tile Neogene aquifer in the Campine area, Belgium. Outcrop sediments are of Miocene to Quaternary age and have a marine to continental origin. Grain size analyses for the same outcrops and correspondingK predictions using previously developed models are also presented. We discuss outcrop hydrogeological properties and quantify the heterogeneity within the outcrops in detail using geostatistical variography. Moreover, outcrop-scaleK values, their anisotropy and dispersivities are numerically calculated as a means to upscale such small-scale measurements to a larger scale commensurate with the scale of flow and transport modelling.
[Show full text]