10.5880/fidgeo.2025.047 Begg, John John Begg 0000-0001-6935-6855 National Observatory of Athens, Athens, Greece Mouslopoulou, Vasiliki Vasiliki Mouslopoulou 0000-0002-5049-5027 National Observatory of Athens, Athens, Greece GFZ Helmholtz Centre for Geosciences, Potsdam, Germany Heron, David David Heron 0000-0003-3957-8259 Earth Science New Zealand (formerly GNS Science), Lower Hutt, New Zealand Nicol, Andrew Andrew Nicol 0000-0001-5181-1151 University of Canterbury, Christchurch, New Zealand GFZ Data Services 2025 Active faults Earthquakes Greece Geomorphology Landscape Analysis Normal fault Fault scarp Topography Paleoearthquakes Historic ruptures EARTH SCIENCE > LAND SURFACE > GEOMORPHOLOGY EARTH SCIENCE > SOLID EARTH > TECTONICS EARTH SCIENCE > SOLID EARTH > TECTONICS > EARTHQUAKES EARTH SCIENCE > SOLID EARTH > TECTONICS > NEOTECTONICS EARTH SCIENCE SERVICES > DATA ANALYSIS AND VISUALIZATION EARTH SCIENCE SERVICES > WEB SERVICES Begg, John John Begg 0000-0001-6935-6855 National Observatory of Athens, Athens, Greece Mouslopoulou, Vasiliki Vasiliki Mouslopoulou 0000-0002-5049-5027 National Observatory of Athens, Athens, Greece GFZ Helmholtz Centre for Geosciences, Potsdam, Germany Heron, David David Heron 0000-0003-3957-8259 Earth Science New Zealand (formerly GNS Science), Lower Hutt, New Zealand Nicol, Andrew Andrew Nicol 0000-0001-5181-1151 University of Canterbury, Christchurch, New Zealand Mouslopoulou, Vasiliki National Observatory of Athens, Athens, Greece Mouslopoulou, Vasiliki National Observatory of Athens, Athens, Greece 2026-01-01 2025-06-01 Dataset 10.1038/s41597-025-06283-z 10.1785/0120200039 DOI of Konstaninou et al 2025, when available 10.1029/2022TC007453 10.1029/2020GC009265 10.1016/j.jsg.2018.05.019 10.3389/feart.2021.730806 10.1029/2023TC008156 https://experience.arcgis.com/experience/a6c85b1edf9d4d17a3f01a70cef6d2b2 https://services2.arcgis.com/T7iULq65Kp9Elquk/arcgis/rest/services/Active_Faults_Greece/FeatureServer https://noaig.maps.arcgis.com/home/item.html?id=4b93c25b931744dabc4851abf9c8ae38/data CC BY 4.0 Greece is Europe’s most seismically active nation, as it is being deformed by an active subduction system and one of the world’s fastest-spreading rifts. Onshore active faults pose seismic hazard that cannot be reliably assessed in the absence of a comprehensive map of potential earthquake sources. Here, we use high-resolution Digital Elevation Models (DEMs), in conjunction with hillshades and slope models, to map and characterise faults in Greece at a scale of 1:25000. The Active Faults Greece (AFG) database records a total of 3815 fault-traces assigned to 892 interpreted faults. Of the AFG traces, 53% were mapped here for the first time, with their geometries and slip-sense constrained by displacement of landscape features. AFG includes >2000 active and 1632 probably active fault-traces, while 30 traces result from historic surface-rupturing earthquakes since 464 BC. About 57% of faults exhibit strong depositional control (DC) on sedimentation patterns, with active faults being characterised by approximately equal numbers of sharp (32%), moderate (29%) and rounded (29%) scarps. AFG is the first fault database in Greece generated using nationwide interpretation of geomorphology and has applications in paleoseismology, seismic-hazard assessment, mineral-resources exploration, and resilience planning.

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Onshore Greece & Greek Islands 18.7339 28.5776 34.6224 41.7943