Thermal conductivity up to 20 m depth

The map shows the specific thermal conductivity of the rocks in the underground up to 20 m depth. It is classified in 17 yield levels, from <= 1 W/(m*K) to > 4 W/(m*K). The classification is based on the mean specific thermal conductivity of the rocks encountered in the underground at [W/(m*K)] to a depth of 20 m. The basis for the calculation of geothermal yield is representative drilling from the Bavarian Soil Information System (BIS). Based on the lithological description of the boreholes, such as sand, limestone or granite, and the groundwater conditions (dry/saturated) correspondingly measured thermal conductivity is assigned to the individual layers up to a depth of 100 m. Below, an average value for the respective depth level is given and interpolated. The data set provides a basis for large-scale considerations and does not replace the conduct of detailed investigations.