期刊
出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.egypro.2015.07.858
关键词
Lindal Diagram; geoexchange; GSHP; thermal springs
Heat flow density over Sardinia is relatively high. Tertiary geodynamics and radiogenic heating from the Variscan batholith are the possible concurrent causes. Major anomalies were thought confined to the Tertiary basins, where 180 mW/m(2) are reported. New data ascertain that the occurrence of the hottest thermal springs does not mirror these basins, as they pour out from Variscan granites. Hence the high thermal flow from the basins can result from basin-wide heat redistribution by hot granite water flowing laterally in shallow aquifers. This scenario is particularly favourable for low-medium enthalpy fluids exploitation as well as for geoexchange. (C) 2015 The Authors. Published by Elsevier Ltd.
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