Measurements of a thermal stream frg. Feature of a thermal field
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The important feature of a thermal field are high values of a thermal stream around Rhine grabena. From materials of the numerous geophysical and geological researches spent last years, it became clear, that this high thermal stream is connected with tafrogenezom. Researches of a geothermal field Rhine grabena have shown considerable local variations of a temperature gradient. Thus, isolines give only an approximate picture of a true geothermal situation in Rhine grabene and answer only to the raised temperature gradient usually observed in this area. From Verner's detailed researches follows, that exist, possibly, two sources of thermal anomaly Rhine grabena: lifting mantijnogo substances under grabenom and hydrodynamic konvektsija in systems of cracks of the top part of a bark. To the east from Rhine grabena one isolated high value 102 мВт/м2 is noted. Because of a lack of data to it here it is not given any interpretation.
Considering background level, to the east from Hanover it is possible to allocate small positive anomaly of a thermal stream. This anomaly is connected, possibly, with a zone of the raised thermal stream in area Altmark, GDR, allocated Hurtigom and SHlosserom. The Same authors believe, that in connection with a high thermal stream in the west of Tjuringsky pool this anomaly is a link between area Altmark and Rhine grabenom. These areas settle down on one line stretched in a northeast direction and approximately corresponding allocated SHtille to a zone Mediterranean sea - Myosa. Magnetic and seismic researches in this area specify in the same prodeletings of structures. Anomaly of a full vector of intensity of a geomagnetic field between 50-52 ° with. sh. And 9-10 ° century d. And distribution of speed of longitudinal waves, as is shown in cards of a deep structure, follow the same general direction.
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