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Title: APPLICATION OF SAR DATA TIME SERIES FOR MONITORING OF GEODINAMIC PROSSES IN THE SOFIA REGION
APPLICATION OF SAR DATA TIME SERIES FOR MONITORING OF GEODINAMIC PROSSES IN THE SOFIA REGION

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Mila Atanasova; Hristo Nikolov
10.5593/sgem2023/2.1/s10.36
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
Photogrammetry and Remote Sensing
In this study the effect of hazardous geodynamic processes in the area around the city of Sofia is investigated using radar satellite data. The area is of particular interest due to its high population density and high concentration of industrial facilities and residential areas. This highlights the importance of the study area in societal aspect. This the reason the authors set the main objective of this research to be the monitoring of the ongoing geodynamic processes by complementary use of synthetic aperture radar (SAR) and GNNS data. In this paper shown is how the surface deformations in the area of Sofia are analysed using a time series of satellite SAR data from ESA missions. Main advantages of those data are the operational acquisition at fixed intervals and the free access from the ESA repositories which allows creation of interferometric time series produced from SAR data. To densify the time series data from ascending and descending satellite orbits were processed. As final result vector layers containing only those points from the unwrapped interferometric images that exhibit coherence values above the threshold are produced. GNSS data from permanent and regularly measured local geodetic networks are used for validation of the information obtained from SAR data concerning the study area. The results from our research were verified with those from an independent source, in case European Ground Motion Service. Finally to explain the studied geodynamic process in the area data regarding regional geology were used too.
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This paper has been made available with the financial support provided by National Science Fund, call identifier “Competition for financial support of basic research projects – 2019” Contract No KP-06-H 34/1
conference
https://doi.org/10.5593/sgem2023/2.1/s10.36
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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.
283-290
03 - 09 July, 2023
website
9116
monitoring, crustal deformation, InSAR, GNSS, ground motions