Fluxo de Calor à Superfície da Terra e Concentração de Elementos Radioactivos

Abstract

The determination of heat loss by the Earth is made using heat flow density values obtained at the surface of the Earth, over continents and under oceans. The last values obtained for the heat loss are 46-47TW. The source of this heat is related with the temperature and composition of the Earth since its formation. Radioactive elements of long life are associated with a considerable portion of this heat, but the concentration of this elements is known only in some places at the surface of continental crust. Measurements made at several quilometers different variations with depth. In this work we present different conventional models of concentrations of radioactive elements in the interior of the Earth. We present also the results obtained with geoneutrino detection.