Geophysical Survey to Investigate the Deep Structure and the Geothermal Potential of Nisyros Island, Dodekanisos, Greece

Summary Nisyros Island, Dodekanisos, SE Greece, has geothermal potential and the detection of its deep structure is of great interest. Geophysical survey consisting old geophysical data analysis and re-interpretation, new gravity and magnetic land data acquisition and their respective map analysis and then their 3D inversion have shown the full picture of the subsurface with the volcanic presence, the faults that control both volcanic as well as geothermal activity, all coinciding with the geological analysis, with the resulting 3D models after inversion showing aerial and depth extent of all interesting features but most important indicating where is the most promising area for a geothermal exploratory borehole.