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Exploration of geothermal potential using integrated fuzzy logic and analytic hierarchy process (AHP) in Ağrı, Eastern Turkey

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The demand for energy is increasing day by day worldwide due to population growth, industrialization and rising living standards. Geothermal energy, one of the alternative energy sources, is preferred in terms of providing environmentally friendly, quality and regular energy. Our country is rich in geothermal resource potential. However, there are still many unexplored geothermal resources. In this study, fuzzy-AHP method was used to determine the geothermal potential of Ağrı province. Five criteria such as geological formations, hot / mineral springs, lineaments, land surface temperature and hydrothermal alteration zones were evaluated to determine the having geothermal potential. | Turkish Journal of Earth Sciences Turkish J Earth Sci 2021 30 1134-1150 http journals.tubitak.gov.tr earth TÜBİTAK Research Article doi 10.3906 yer-2105-18 Exploration of geothermal potential using integrated fuzzy logic and analytic hierarchy process AHP in Ağrı Eastern Turkey 1 2 Erhan ŞENER Şehnaz ŞENER 1 Süleyman Demirel University Remote Sensing Center Isparta Turkey 2 Department of Geological Engineering Süleyman Demirel University Isparta Turkey Received 13.05.2021 Accepted Published Online 26.08.2021 Final Version 01.12.2021 Abstract The demand for energy is increasing day by day worldwide due to population growth industrialization and rising living standards. Geothermal energy one of the alternative energy sources is preferred in terms of providing environmentally friendly quality and regular energy. Our country is rich in geothermal resource potential. However there are still many unexplored geothermal resources. In this study fuzzy-AHP method was used to determine the geothermal potential of Ağrı province. Five criteria such as geological formations hot mineral springs lineaments land surface temperature and hydrothermal alteration zones were evaluated to determine the having geothermal potential. The maps of lineament land surface temperature and hydrothermal alteration zones were prepared using Landsat 8 OLI TIRS satellite images. Each criterion was weighted with the fuzzy-AHP method analyzed in the GIS environment and the geothermal potential index GPI of the study area was calculated. As a result areas with very high high medium and low geothermal potential were determined in the study area. According to the GPI map of the study area Ağrı provincial center Patnos Eleşkirt and Doğubayazıt regions have high geothermal potential. In addition the known geothermal fields in the study area have been identified as areas with very high geothermal potential. These data reveal the accuracy of the study and used method. Key words Analytic hierarchy process .