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Authors: Duque, Maria Rosa
Keywords: Heat flow
sources of heat in the crust
radioactive heat sources
Temperature at depth
Issue Date: Mar-2017
Publisher: APMG-Associação Portuguesa de Meteorologia e Geofísica
Citation: Duque, M. R., (2017).Fluxo de calor –Possíveis anomalias. APMG 2017, 10º Simpósio de Meteorologia e Geofísica da APMG, 20 a 22 de Março de 2017, Lisboa.
Abstract: This paper tries to explain the heat flow density values obtained in a region located in the south of Portugal. New results of heat production by radioactive decay of U, Th and K, and chemical reactions related with ore bodies explored in the region are considered as heat sources near the surface. Moho depths and seismic velocity values were obtained in a recent work made using receiver functions. Gravity anomalies and new density values obtained in the region were used. The two geotherms obtained show normal Moho temperature values and relatively high temperature values near the surface. The hypothesis of the existence of a thermal anomaly in the upper mantle seems not to be valid.
Type: lecture
Appears in Collections:FIS - Comunicações - Em Congressos Científicos Nacionais

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