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MONITORING STABILITY IN THE VITOSHA FAULT AREA USING SATELITE DATA
Abstract
The scientific research presented in the article is related to the application of methodologies for monitoring deformations of the Earth's crust. Intensively developing technologies were used, such as GNSS and SAR methods. The Sofia region is among the earthquake zones in Bulgaria. The general conclusion is, that Sofia located in an area characterized by a high seismic risk, with considerable consequences in the case of a strong seismic event. New scientific knowledge about the geodynamics of the region and the phenomena that cause surface deformations are presented. The GNSS data from 3 permanent stations for the Sofia region to register changes in the horizontal and vertical position of the stations was processing and analysis. The aim is to analyze the results of GNSS data from the permanent stations SOFI, SOF1 and NIGG located on both sides of the Vitosha Fault. Time series of GNSS data from the permanent stations SOFI and SOF1 were processed and compared to determine whether there was a change in the length of the chord (baseline) connecting these two points. It is searched for whether there is a registered shortening or extension along the baseline. Monitoring on the stability in the area of permanent stations is based on data from the Sentinel-1 mission, using interferometric data from synthetic aperture radar (SAR). The European Ground Motion Service (EGMS) was created in response to user needs at the Copernicus. This product represents the bleeding edge of space-based remote sensing technology, using Synthetic Aperture Radar Interferometry (InSAR) data to detect and measure ground movements across Europe with millimeter precision. The problem under consideration is topical and significant, related to the application of the most modern methods for studying geodynamic processes in the earth's crust and providing up-to-date information about them.
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References13
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EGMS- https://egms.land.copernicus.eu/ (12.06.2025)
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