MAPPING OF THE HEAT FLOW PATTERN IN EUROPE

by ECKART HURTIG1, VLADIMIR CERMÁK2
1Central Institute for Earth's Physics, Academy of Sciences of the German Democratic Republic, Potsdam
2Gefyzikálni ústav, CSAV, Praha, Czechoslovakia

Sont présentés les principes de la rédaction de la carte du flux thermique de l'Europe. L'image de la distribution du flux indique une augmentation générale de l'activité géothermique du nord-est vers le sud-ouest, due à l'évolution géologique. Les principales régions de flux géothermique correspondent approximativement aux grandes unités tectoniques.

The Heat flow field in Europe is presented in a form of a simplified heat flow map showing the distribution of the principal low (< 40 mWm) and high (> 80 mWm) heat flow zones. This map is based on more than 2100 land heat flow measurements completed by deep hole temperatures, temperature gradients and local heat flow patterns. The European region is generally characterized by large low heat flow zones covering most of the northern and eastern Europe, surrounded by normal to high heat flow values spread in western, central, southern and south-eastern Europe. This "north-east to south-west" increase of the geothermal activity in Europe is the consequence of the whole geological evolution and the major heat flow provinces have to correspond roughly to the principal tectonic units of the Ur-Europe, Palaeo-Europe, Meso-Europe and Neo-Europe according to Stille [40].