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Title: GNSS MONITORING OF THE GEODYNAMIC PROCESSES IN THE AREA OF SOFIA AN IMPORTANT TOOL FOR STUDYING OF RECENT GEODYNAMICS AND NATURAL RISK PREVENTION IN A HIGHLY POPULATED AREA
GNSS MONITORING OF THE GEODYNAMIC PROCESSES IN THE AREA OF SOFIA AN IMPORTANT TOOL FOR STUDYING OF RECENT GEODYNAMICS AND NATURAL RISK PREVENTION IN A HIGHLY POPULATED AREA

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Nikolay Dimitrov; Radoslav Nakov; Anton Ivanov; Petar Danchev
10.5593/sgem2023/2.1/s09.25
10.5593/sgem2023/2.1
1314-2704
978-619-7603-57-6
English
23
2.1
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Geodesy and Mine Surveying
In recent years GNSS studies play an increasing role in studding of natural risk hazards and active tectonics. The area of Sofia is part of the broad South-Balkan Extensional Tectonic System. This highly populated area of economic significance, even showing to be not so active as other parts of the System is also affected by natural hazards, as active seismicity, landslides, rock falls, debris, etc. GNSS studies are extremely important for understanding of natural hazards and recent geodynamics of the area, especially establishing and investigating of active faults, which is crucial for the prognostic and evaluation of the seismic risk.
In aim to perform GNSS Monitoring in the area of Sofia and all over the territory of Bulgaria the Department of Geodesy at National Institute of Geophysics, Geodesy and Geography maintains the National Permanent GNSS. To study the modern movements of the Earth's crust during the period 1996-1997, a geodynamic network was built in the area around Sofia, covering South Western Bulgaria. The network is designed for highprecision GNSS measurements, determination of coordinates and velocities of points, calculation of active strain in the area and long-term monitoring crustal movements. The processing and analysis of the measurements allow monitoring of recent movements of the earth's crust in Bulgaria and the Balkan Peninsula and, together with seismic and geological information, an assessment of seismic and geological hazards.
The results obtained from the analysis of GNSS data of Sofia area and SW Bulgaria allow to identify new area of probably active faults, provide new data on known tectonic structures and have a significant implication in the study of recent crustal movements and evaluation of the natural hazard in the region.
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This paper has been made available with the financial support provided by National Science Fund, Bulgaria, call identifier “Competition for financial support of basic research projects – 2019” Project "Monitoring of geodynamic processes in the area of Sofia". Contract No КП-06-H 34/1.
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https://doi.org/10.5593/sgem2023/2.1/s09.25
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Proceedings of 23rd International Multidisciplinary Scientific GeoConference SGEM 2023
23rd International Multidisciplinary Scientific GeoConference SGEM 2023, 03 - 09 July, 2023
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Russian Acad Arts; Turkish Acad Sci.
201-208
03 - 09 July, 2023
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GNSS, crustal movements, geodynamics, velocity field