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Earthquakes are unevenly distributed in space. Seismic events are predominantly concentrated within well-defined seismic belts, many of which coincide with the boundaries and interaction zones of major tectonic plates. These zones represent areas of accumulated stress and active geodynamic processes, where earthquake generation is most frequent. In seismically active territories such as Bulgaria, earthquakes constitute one of the most significant natural hazards due to their potential societal and infrastructural ...

This study assesses surface deformation in the Vyshegrad Fortress area using Synthetic Aperture Radar (SAR) data. The site, located near the Studen Kladenets dam, is affected by complex geomorphological and environmental conditions that may compromise structural stability. Steep slopes prone to erosion and landslides, increased moisture, rock fracturing, and regional seismic activity pose significant risks to the integrity of the stone architectural complex. Their evaluation is essential for effective preservation...