CTBT: Science and Technology Conference 2025 - SnT2025

Spatial-Temporal Distribution of b-Value in Albania and its Surroundings Over the Last Decade

P1.2-639

Not scheduled

1h

Zeremoniensaal

E-poster T1.2 The Solid Earth and its Structure P1.2 The Solid Earth and its Structure

Speaker

Klajdi Qoshi (Institute of GeoSciences, Polytechnic University of Tirana.)

Description

Albania, situated on the Adriatic microplate boundary, experiences high seismicity. The Gutenberg-Richter relationship, characterized by the a and b values, is crucial for understanding seismicity and forms the foundation for seismic hazard assessment. Using ZMAP7, we analysed seismicity in Albania (18.5–21.5° longitude, 38.0–43.0° latitude) from 2015 to 2024. The declustered seismic catalog, processed with the Gardner-Knopoff method, allowed for the calculation and spatial visualization of a and b values. Regions with significant b-value variations, indicating seismicity changes, were identified. Temporal analysis further revealed b-value fluctuations before and after significant earthquakes (M > 5.5). Consistent with global observations, low b-values were detected prior to large earthquakes, highlighting their potential as a forecasting indicator for major seismic events.