| Title | Geothermal Favorability Assessment of the Gediz Graben Through Correlation and GIS Based MCDA Methodologies |
|---|---|
| Authors | Selim CAMBAZOĞLU, Gözde Pınar YAL, Arif Mert EKER, Osman ŞEN, Haluk AKGÜN |
| Year | 2020 |
| Conference | World Geothermal Congress |
| Keywords | GIS, MCDA, Western Anatolia, geothermal favorability, Gediz Graben, bivariate correlation |
| Abstract | Turkey is ranked fourth in the world in terms of geothermal production with more than 45 active plants having 1347 MWe installed capacity. Western Anatolia, primarily the Büyük Menderes Graben followed by the Gediz Graben, are among the most important regions in the world in terms of geothermal energy potential and hosts almost the entire installed capacity of Turkey. There are several operational geothermal power plants in the Gediz Graben where other projects are either in a construction or planning stage. Following the preliminary exploration, one of the most important stages in a geothermal project is well site selection due to high drilling costs. GIS has been proven to be a useful tool in identification of potential areas for detailed resource exploration through detection of spatial correlations between various types of data that have been collected during the initial exploration stages. In this study, various geothermal potential and favorability criteria layers were generated, and each layer was incorporated into a GIS environment. These variable layers were correlated with a favorability map generated based on knowledge driven criteria ranking in order to assess the relative importance of each criterion. A MCDA (Multi-Criteria Decision Analysis) was performed to generate a geothermal favorability map of the region. Finally, the success rate of the final geothermal favorability map was assessed based on the known producing wells. |