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APPLICATION OF SAR DATA TIME SERIES FOR MONITORING OF GEODINAMIC PROSSES IN THE SOFIA REGION
Abstract
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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References13
Yosifov, D.; Paskaleva, I.; Botev, E.; Rangelov, B. The Seismic Risk for Sofia; NTS MDGM: Sofia, Bulgaria, 2018; 207p. (In Bulgarian)
Radulov, A.; Yaneva, M.; Shanov, S.; Kostov, K.; Nikolov, V.; Nikolov, N. Coseismic geological effects related to the 22 May 2012 Pernik earthquake, Western Bulgaria. In Proceedings of the National Conference Geosciences 2012, Sofia, Bulgaria, 13�14 December 2012; pp. 121�122. 3] Kotzev, V., R. Nakov, B. C. Burchfiel, R. King, and R. Reilinger (2001), GPS study of active tectonics in Bulgaria: Results from 1996 to 1998, J. Geodyn., 31, 189�200. DOI: 10.1016/s0264-3707(00)00027-2
Kotzev, V., R. Nakov, Tz. Georgiev, B.C. Burchfiel, R.W. King. (2006), Crustal motion and strain accumulation in western Bulgaria, Tectonophysics, 2006, 413, 127�145. DOI: 10.1016/j.tecto.2005.10.040
Kotzev, V., R.W. King, B.C. Burchfiel, A. Todosov, B. Nurce, R. Nakov. (2008), Crustal motion and strain accumulation in the South Balkan Region Inferred from GPS. Measurements, in Husebye, E., ed., Earthquake monitoring and seismic hazard mitigation in Balkan countries: Proceedings of the NATO Advanced Research Workshop on Earthquake Monitoring and Seismic Hazard Mitigation in Balkan Countries, Borovetz, Bulgaria, 11�18 September 2005: NATO Science Series IV: Earth and Environmental Sciences. 2008, Volume 81, p. 19�43. DOI: 10.1007/978-1-4020-6815-7_2
Kotzev, V.; Nakov, R.; Burchfiel, B.C.; King, R.W. GPS constraints on the kinematics of southwestern Bulgaria. C. R. Acad. Bulg.Sci. 2001, 54, 51�54.
Dimitrov N, P. Danchev, I. Georgiev, A. Ivanov. Geodetic measurements of the geodynamic network in the area of Sofia, processing and analysis of the results. Proceeding XXX International symposium on �Modern technologies, education and professional practice in geodesy and related fields� 04-06 November 2020, Sofia, Bulgaia, CD, 12, 2020, ISSN:2367-6051, 1-11
Dimitrov N., Nakov R. GPS Results from Long Time Monitoring of Geodynamic Processes in South-Western Bulgaria. Applied Sciences, 12, 5, MDPI, 2022, ISSN:2076-3417, DOI: 10.3390/app12052682, 2682.
Dimitrov, N. and Ivanov, A. (2023). GNSS Monitoring of Geodynamics in the Region Around Sofia and South-Western Bulgaria. In Proceedings of the 9th International Conference on Geographical Information Systems Theory, Applications and Management, ISBN 978-989-758-649-1, ISSN 2184-500X, pages 144-149. DOI: 10.5220/0011840400003473
Braun A., Veci L., TOPS Interferometry Tutorial, Last updated June 2021, http://step.esa.int/docs/tutorials/S1TBX%20TOPSAR%20Interferometry%20with%20S entinel1%20Tutorial_v2.pdf
Larsen Y. et al., European Ground Motion Service: Service Implementation Plan and Product Specification Document, Report to CLMS, ver. 1.01 (Jan 2022)
Costantini, M. et al., European Ground Motion Service (EGMS)," 2021 1486 IEEE International Geoscience and Remote Sensing Symposium IGARSS, Brussels, Belgium, 2021, pp. 3293-3296, doi: 1487 DOI: 10.1109/IGARSS47720.2021.9553562.
Atanasova M., Nikolov H., Dimitrov N. (2021) Study on Ground Motions in Southwest Bulgaria based on in-Situ and Satellite Data. Proceedings of the 7th International Conference on Geographical Information Systems Theory, Applications and Management - GISTAM,, 2021, ISBN:978-989-758-503-6, ISSN:2184-500X, DOI: 10.5220/0010503101570164, 157-164.
Shanov, S., K. Kourtev, G. Nikolov, A. Boykova, B. Rangelov (2001), Seismotectonic characteristics of the western periphery of the Rhodope Mountain region. Geologica Balcanica, 31, 1/2, pp.53-66. DOI: 10.52321/geolbalc.31.1-2.53
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