A recent development in the Netherlands is the implementation of a Key Register Subsurface (“Basisregistratie Ondergrond”). Part of this Key Register Subsurface is a new generation of 3D subsurface models that provide estimates of stratigraphy, lithology (clay, sand, peat) and sand-grain size class data at voxel-resolutions of 100*100*0.5m (referred to as GeoTOP models). These regional-scale models can be used as a starting point for detailed investigations of risks and opportunities that may evolve from intensive and multiple uses of the subsurface. An example of this is the planning of a new subway in the city of Rotterdam.


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