- Last updated
- December 31, 1982
- Terms of use
-
- Organization
- Federal Office of Topography swisstopo
- Format
Description
The geothermal map shows the thermal energy that is produced in the subsurface and traverses the Earth's surface within an area of 1 m2. The heat itself is released in the Earth's crust (around 30 km thick) generally by radioactive decay processes. On average, the heat flow in Switzerland is around 90 mW/m2. The highest figures are found in northern Switzerland and the lowest in the Alps/Jura. Differences are caused by deep groundwater circulating in permeable rock strata. The heat flow data is calculated from the temperature gradient (average value approx. 30 K/km) and heat conductivity of the rock (average value approx. 3 W/m/K). Paper map: Ph. Bodmer, 1982. Vector map: 2001.
Additional information
- Identifier
- Issued date
- December 31, 1982
- Modified date
- -
- Languages
-
- English
- German
- French
- Italian
- Access URL
- https://data.geo.admin.ch/ch.swisstopo.geologie-geophysik-geothermie
- Download URL
- https://data.geo.admin.ch/ch.swisstopo.geologie-geophysik-geothermie
- File size
- -
- Format -
