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Abstract

Summary

Geothermal source plays an important role in the global energy transition, offering a complementary and clean alternative in the basket of energy shares. Lesvos Island in Greece, particularly the Petra-Stypsi area, presents significant geothermal potential due to its active hot springs. In contrast, geothermal resources on the Turkish side are fully developed. This study utilizes reflection seismic and traveltime tomography to locate key fault systems and assess geothermal potential. During a challenging survey, four seismic profiles were acquired. Data acquisition and processing addressed difficulties posed by rugged terrain, near-surface complexity, and 3D volcanic features. Analysis reveals the subsurface structure of the Petra depression within the Petra basin, characterized by inward faults and low-velocity zones indicative of hydrothermal alteration. Both the southern and northern sectors of this depression emerge as promising sites for geothermal field development. The identified faults intersect with surface fault systems, marking them as prime targets for geothermal exploration based on tomographic velocity models and seismic imaging results. The integration of reflection seismic and traveltime tomography proves effective for geothermal investigations in complex geological environments.

© EAGE Publications BV
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2025-09-07
2026-02-14

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/content/papers/10.3997/2214-4609.202520014
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A Seismic Investigation of the Petra Depression for Geothermal Exploration in Lesvos, Greece
Conference Proceedings 2025, 1 (2025); https://doi.org/10.3997/2214-4609.202520014
/content/papers/10.3997/2214-4609.202520014
/content/papers/10.3997/2214-4609.202520014
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