Scholarly record
VELOCITY FIELD IN SOUTHWEST BULGARIA OBTAINED FROM GNSS DATA
Abstract
The region of southwest Bulgaria is characterized by a large number of fault structures, and the presence of tectonic and seismic activity, thus predetermines the development of dangerous geodynamic processes. This article discusses the estimates of modern movements of the earth's crust obtained from periodic geodetic measurements. They describe the total effect of fast and slow horizontal and vertical movements. Obtaining such estimates, on the order of mm/y, requires determining the coordinates of the points of the geodynamic geodetic networks with millimeter accuracy. Achieving such accuracy is possible only with the help of modern satellite geodetic technologies. GNSS data from five continuously operating reference stations belonging to National GNSS network is used in this research. The raw GNSS measurements for three-year-and-a-half period are processed. Time series with coordinates and mean square errors (north, east and up) and time series with the residuals from multi-year solution are estimated. The time series show very good quality of the solution (the values of nrms are smaller than 0.70). The results for velocities of EPN Densification network, National GPS Network and Geodynamic GPS network around Sofia and Southwest Bulgaria are combined to obtain velocities field in Southwest Bulgaria derived from GNSS measurements. The newly acquired velocity field confirms that the general tendency of movement of the points in the region of Southwest Bulgaria is in the southern direction with respect to stable Eurasia, as a general tendency the velocities increase from North to South. This pattern is in agreement with the extensive movement of southern Bulgaria and northern Greece. The obtained velocity field can be used for further detailed geodynamic and geological investigations of the fault structures in the region.
Publication Impact Profile
- Captures
- Mendeley - Readers: 1
Publication details
References8
Kenyeres A, Bellet JG, Bruyninx C, Caporali A, De Doncker F, Droscak B, Duret A, Franke P, Georgiev I, Bingley R, Huisman L, Jivall L, Khoda O, Kollo K, Kurt AI, Lahtinen S, Legrand J, Magyar B, Mesmaker D, Morozova K, Nagl J, Ozdemir S, Papanikolaouo X, Parseulinas E, Stangl G, OB Tangen, Valdes M, Ryczywolski M, Zurutuza J, Weber M (2019). Regional integration of long-term national dense GNSS network solutions. GPS Solutions, (2019) 23:122, DOI: 10.1007/s10291-019-0902-7.
Herring, T. A., King, R. W., Floyd M. A., McClusky, S. C. (2018). GAMIT reference manual, GPS Analysis at MIT, Release 10.7. Cambridge, MA:Massachusetts Institute of Technology.
Herring, T. A., Floyd M. A., King, R. W., McClusky, S. C. (2015). GLOBK reference manual, Global Kalman filter VLBI and GPS analysis program, Release 10.6. Cambridge, MA: Massachusetts Institute of Technology.
Georgiev, I., G. Mihailov, P. Danchev, N. Dimitrov, M. Minchev, P. Gabenski (2020). National GPS network: Processing and analyzing the measurements of the points of the main order, Geodesy 23, ISSN 0324-1114, ISBN 978-954-9649-13-0.
Dach, R., S. Lutz, P. Walser, P. Fridez (Eds). 2015. Bernese GNSS Software Version 5.2. User manual, Astronomical Institute, University of Bern, Bern Open Publishing. DOI: 10.7892/boris.72297; ISBN: 978-3-906813-05-9.
Kotzev, V., R. Nakov, B. C. Burchfiel, R. W. King. (2001). GPS constraints on the kinematics of southwestern Bulgaria. - C. R Acad. Bulg. Sci., 54, 7, 51-54.
Kotzev, V., R., Nakov, Tz., Georgiev, B.C., Burchfiel, R.W., King (2006). Crustal motion and strain accumulation in western Bulgaria. – Tectonophysics, 413 (3-4), 27-145.
Dimitrov N, R. Nakov. Recent GPS results on the geodynamics of the area around Sofia (Central-Western Bulgaria). Review of the Bulgarian Geological Society, 3, 81, 2020, ISSN: 0007-3938, 241-243.
View or Download full articleAccess options
SWS access login
Login as SWS Scientific CommitteeLogin as SWS Scientific PartnerLogin as SWS AuthorAuthors and approved SWS contributors will read and export their own linked papers after identity matching by SWS profile, email and SGEM GlobalID.
For librarian assistance: [email protected]
Purchase Instant Access
- Article can be downloaded after successful payment.
- Article may be used according to SWS library access terms.
- Article cannot be redistributed.