Anomalies of terrestrial temperature field of BELARUS

Abstract

Results of regional investigations of the terrestrial temperature field within the territory of Belarus are analyzed. The temperature distribution within the upper part of the platform cover has a contrast pattern both within Paleozoic depressions, and Precambrian units. In addition to already known temperature anomalies in the northern zone of the Pripyat Trough and the Brest Depression, such new anomalies as the Belavezhskaya, Molodechno-Naroch, East-Orsha, CentralOrsha, Belynichi-Rechitsa, Khotimsk-Svetilovichi, Novoyelnya-Lyakhovichi and Grodno were outlined. Temperature distribution maps at a depth of 200 m and a map of its distribution at the socalled quasi-neutral layer were compiled to reveal them. It was shown that the mentioned anomalies are traced identically using the traditional method (temperature distribution at a fixed depth) and the new one (temperature distribution at the “quasi-neutral layer”). But the new approach allowed tracing additional anomalies, for instance, the Belavezhskaya one. Both the traditional method used to distinguish temperature anomalies, and the new one gave comparable results. This paper is devoted to terrestrial temperature field features at shallow depths within the territory of Belarus. It describes the available geothermal anomalies briefly for the first time. A preliminary map of the heat flow density distribution based on a new approach is presented as well.