the Analysis of a superficial thermal stream. Interpretation

you are: the Analysis of a superficial thermal stream

Distribution of temperature to different depths in the top cloak influences physical characteristics of a material (for example, on elektroprovodnost, density, distribution of speeds on depth, viscosity). (T - settlement temperature, Tpl - fusion temperature) it is possible to consider relation T/Tpl as the main parametre at the analysis reologicheskogo behaviour of a material of the top cloak. Accepting, that the top cloak consists from pirolita, it is possible to use available data about a curve of fusion of this material for definition of values T/Tpl along a profile Corsica - Leningrad.

Temperature Distribution on depth for Southern and Average Europe and for the East European platform in comparison with a curve of fusion dry pirolita. Values for Average Europe settle down considerably above a curve 0,7 Tpl.

Values T/Til for all profile. In the western part of a profile this relation above, than under the East European platform. The maximum values are received for an interval of depths between 100 and 200 km.

From results on the East European platform follows, that values of viscosity should be there on some usages above, than across Average and Southern Europe. Means, the top cloak under dokembrijskim a kernel of Europe should be more rigid. Besides, there are no bases to allocate in the top cloak of this region any zone of the lowered viscosity.

These conclusions will well be co-ordinated with the results received at the analysis of other geophysical measurements. It is noticed, that lateralnye variations of speed in the top cloak under territory of Europe reach depths about 600 km. Materials of deep electromagnetic sounding and supervision of century variations of a geomagnetic field also testify to distinction of physical characteristics of the top cloak for the East European platform and for Average Europe. Thus, the East European platform (dokembrijskoe a kernel of Europe) is a heterogeneity of the first order which reaches depths about 600 km.