Over 17,500 earthquakes have been recorded since the beginning of seismic activity in the Santorini-Amorgos region, from January 26 to February 12, 2025, as reported by the Interdisciplinary Risk and Crisis Management Committee of EKPA.

According to the Committee’s announcement, the Seismology Laboratory (SL) of EKPA (http://dggsl.geol.uoa.gr/) has detected and identified over 17,500 selected earthquakes using machine learning methods (artificial intelligence), with more than 15,400 of them having magnitudes greater than or equal to M³1.0.

On February 12, over 1,000 earthquakes were recorded, with approximately 190 having magnitudes of M³2.5, 16 earthquakes with M³4.0, and 5 earthquakes with M³4.5, the largest earthquake having a magnitude of 5.0. According to the daily seismic data analysis from the Seismology Laboratory of EKPA, on February 13, more than 100 earthquakes were recorded, including 2 with magnitudes M≥4.0 and none (0) with M≥4.5. The two strongest earthquakes, with a magnitude of 4.4, occurred at 17:40:09 and 17:42:22 (local time).

The distribution of the epicenters is mainly confined to an area of 10-12 km in length, southwest of Anydros, where the strongest earthquakes have been located. On February 13, no outbursts of continuous microseismicity, lasting about 1-2 hours, were observed, which had been common throughout the previous period. In general, a decrease in both the number and magnitude of earthquakes is observed.

Map of earthquake distribution in the Cyclades region (Santorini-Amorgos-Ios) recorded on February 12 (analysis using artificial intelligence) and February 13 (daily analysis). The radius of the circles corresponds to the magnitude of the earthquake (legend top-right), while the epicenters of earthquakes with magnitudes greater than or equal to 4.5 are marked with a star. The coloring reflects the focal depth, according to the color scale (right).

The coordinator of the Interdisciplinary Risk and Crisis Management Committee of EKPA is Efthymios Lekkas, Emeritus Professor at the Department of Geology and Geoenvironment.

The members of the Interdisciplinary Risk and Crisis Management Committee are:

• Asimina Antonaraki, Professor and Chair of the Department of Geology and Geoenvironment
• Nikolaos Arkadopoulos, Professor of Surgery, Dean of the School of Medicine
• Emmanouil Vasilakis, Associate Professor, Department of Geology and Geoenvironment
• Michail Diakakis, Assistant Professor, Department of Geology and Geoenvironment
• Niki-Nikoletta Evelpidou, Professor, Department of Geology and Geoenvironment
• George Kavyris, Professor, Department of Geology and Geoenvironment
• Konstantinos Kartalis, Professor, Department of Physics
• Pagona Layiou, Professor of Epidemiology, Dean of the School of Health Sciences
• Efthymios Lekkas, Emeritus Professor, Department of Geology and Geoenvironment, Committee Coordinator
• Spyridon Mavroulis, Scientific Associate, Department of Geology and Geoenvironment
• Emmanouil Pikoulis, Professor, School of Medicine
• Pilios-Dimitris Stavrou, Assistant Professor, Department of Psychology
• Chryssi Chatzichristou, Professor, Department of Psychology

The person responsible for promoting the work and actions of the Committee is the member of EDIP from the Department of Communication and Mass Media, Mr. Dimitris Koutsombolis.