Multi-scale aquifer characterization and groundwater flow model parameterization using direct push technologies

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Abstract

Direct push (DP) technologies are typically used for cost-effective geotechnical characterization of unconsolidated soils and sediments. In more recent developments, DP technologies have been used for efficient hydraulic conductivity (K) characterization along vertical profiles with sampling resolutions of up to a few centimetres. Until date, however, only a limited number of studies document high-resolution in situ DP data for three-dimensional conceptual hydrogeological model development and groundwater flow model parameterization. This study demonstrates how DP technologies improve building of a conceptual hydrogeological model. We further evaluate the degree to which the DP-derived hydrogeological parameter K, measured across different spatial scales, improves performance of a regional groundwater flow model. The study area covers an area of ~60 km2 with two overlying, mainly unconsolidated sand aquifers separated by a 5–7 m thick highly heterogeneous clay layer (in north-eastern Belgium).

Details

Original languageEnglish
Pages (from-to)1303-1324
JournalEnvironmental Earth Sciences
Volume72
Issue number5
DOIs
Publication statusPublished - Sep 2014

Keywords

  • Direct push technologies, Cone penetration testing, Injection logging, Hydraulic profiling, Heterogeneity, Conditional simulation, Non-stationary geostatistics

ID: 125732