remote sensing Article Imaging Thermal Anomalies in Hot Dry Rock Geothermal Systems from Near-Surface Geophysical Modelling David Gomez-Ortiz 1,* , Isabel Blanco-Montenegro 2,3 , Jose Arnoso 3,4 , Tomas Martin-Crespo 1 , Mercedes Solla 5,6 , Fuensanta G. Montesinos 3,7 , Emilio Vélez 3,4 and Nieves Sánchez 8 1 Dpt. Biología y Geología, Física y Química Inorgánica, ESCET, Universidad Rey Juan Carlos, C/Tulipán s/n, 28933 Móstoles, Madrid, Spain;
[email protected] 2 Departamento de Física, Escuela Politécnica Superior, Universidad de Burgos, Avda. de Cantabria s/n, 09006 Burgos, Spain;
[email protected] 3 Research Group ‘Geodesia’, Universidad Complutense de Madrid, 28040 Madrid, Spain 4 Instituto de Geociencias (IGEO, CSIC-UCM), C/ Doctor Severo Ochoa, 7. Facultad de Medicina (Edificio Entrepabellones 7 y 8), 28040 Madrid, Spain;
[email protected] (J.A.);
[email protected] (E.V.) 5 Defense University Center, Spanish Naval Academy, Plaza de España 2, 36920 Marín, Pontevedra, Spain;
[email protected] 6 Research Group ‘Geotecnologías Aplicadas’, Universidad de Vigo, 36310 Vigo, Spain 7 Facultad de CC. Matemáticas, Universidad Complutense de Madrid, Plaza de Ciencias, 3, 28040 Madrid, Spain;
[email protected] 8 Spanish Geological Survey, Unit of Canary Islands, Alonso Alvarado, 43, 2◦A, 35003 Las Palmas de Gran Canaria, Spain;
[email protected] * Correspondence:
[email protected]; Tel.: +34-914887092 Received: 25 January 2019; Accepted: 19 March 2019; Published: 21 March 2019 Abstract: Convective hydrothermal systems have been extensively studied using electrical and electromagnetic methods given the strong correlation between low conductivity anomalies associated with hydrothermal brines and high temperature areas.