Preparing for a pump/injection test in a coastal area in the Netherlands: determination background variations and local response of groudnwater heads to tides, precipitation, evaporation and surface water levels

Willem Jan Zaadnoordijk, Wim Booltink, Mathijs Oudega, Jan Gunnink, Marc F.P. Bierkens

Research output: Contribution to conferencePosterScientific

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Abstract

The Geological Survey of the Netherlands (TNO-GSN) provides public information on the subsurface (http://www.dinoloket.nl). Among this information are (hydro)geological models with hydraulic parametrization. GeoTOP is a voxel model of the upper 50 meters with voxels of 100m x 100m x 0.5m. The basis of the hydraulic parametrisation is a large collection of laboratory measurements of the hydraulic conductivity determined for samples from undisturbed cores, which TNO-GSN collects systematically throughout the Netherlands. The values are upscaled from laboratory to voxel scale for each combination of geological unit and lithoclass. The hydraulic parametrization of GeoTOP for the province of Zeeland (TNO-GSN, 2016) resulted in very high resistances of the confining layer covering the main regional aquifer. The high resistance was predicted for a large area, which made it feasible to validate it. The magnitiude of the resistance is important for the salinization risk for the shallow groundwater and the increase of this risk due to sea level rise.
Original languageEnglish
Number of pages1
Publication statusPublished - 2019
EventIAH 2019: 46th Congress of the Interational Association of Hydrogeologists: IAH 2019 - Malaga, Spain
Duration: 22 Sep 201927 Sep 2019
Conference number: 16

Conference

ConferenceIAH 2019: 46th Congress of the Interational Association of Hydrogeologists
CountrySpain
CityMalaga
Period22/09/1927/09/19

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