Bedrock elevation model
Datasets
The national bedrock elevation model represents the bedrock surface, which also corresponds to the base of the unconsolidated deposits. The model has a 10 x 10 m raster cell size and shows the altitude in meters above sea level. The bedrock elevation model (BEM) is part of the larger swissBEDROCK dataset, which also includes the <a href="https://map.geo.admin.ch/?layers=ch.swisstopo.geologie-lockergestein_maechtigkeitsmodell&topic=geol" target="_blank">thickness model of unconsolidated deposits (TMUD)</a>, uncertainty estimates and changes compared to previous versions. The full swissBEDROCK dataset can be <a href="https://www.swisstopo.admin.ch/en/3d-swissbedrock-en" target="_blank">downloaded here</a> or viewed and queried on <a href="https://viewer.swissgeol.ch/?lon=8.39730&lat=44.63444&elevation=238404&heading=341&pitch=-48&layers=ch.swisstopo.swissbedrock-geotiff%2Cch.swisstopo.swissbedrock-geotiff-with-terrain&layers_transparency=0.5%2C0&layers_visibility=false%2Ctrue&map=empty_map" target="_blank">viewer.swissgeol.ch</a> on a cell basis. The model consists of data provided by third parties and parts that have been modelled by the Federal Office of Topography. A <a href="http