Deformation analysis in central west Bulgaria using triangulation and GPS data

• Autorzy: Dimitrov Nikolay

Identyfikatory

DOI

10.2478/rgg-2019-0009

• Języki publikacji: EN

Abstrakty

EN

The article discusses a method applied for combining the results of Global Navigation Satellite Systems (GNSS) and 75-year old triangulation measurements to estimate the crustal movements in central western Bulgaria region. It was examined for joint analysis based on the results of GNSS with angular measurements of the first order triangulation network in Bulgaria during the period 1923–1930 year. As a result of the processing of GNSS and angular measurements, horizontal velocities of 15 points, strain rates, and rotation rates have been obtained. The results show dominating N–S extension at a rate of 1–2 mm/y and the deformation is not uniformly distributed over the studied area. The obtained results indicate the possibility of using old angular measurement of first-order triangulation points, together with GNSS data, to obtain estimates of the horizontal crustal movements.

Słowa kluczowe

EN

deformation analysis; GNSS; triangulation; active tectonics

PL

analiza deformacji; GNSS; triangulacja; tektonika

• Wydawca: Wydział Geodezji i Kartografii Politechniki Warszawskiej
• Czasopismo: Reports on Geodesy and Geoinformatics
• Rocznik: 2019
• Tom: Vol. 108
• Strony: 23--26
• Opis fizyczny: Bibliogr. 11 poz., rys., tab.

Twórcy

autor

Dimitrov Nikolay

• Department of Geodesy, National Institute of Geophysics, Geodesy and Geography, Acad. G. Bonchev str., Block 3, Sofia 1113, Bulgaria

Bibliografia

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• [2] Burchfiel, C. B., Nakov, R., Tzankov, T., and Royden, L. H. (2000). Cenozoic extension in Bulgaria and northern Greece: the northern part of the Aegean extensional regime. Geological Society, London, Special Publications, l73(l):325-352, doi:10.1144/GSL.SP.2000.173.01.16.
• [3] Dimitrov, N. and Georgiev, I. (2011). Crustal strain from GPS and triangulation data in Central Western Bulgaria. Review of the Bulgarian Geological Society, 72(i-3):27-32.
• [4] Dong, D. (1993)- The horizontal velocity field in southern California from a combination of terrestrial and space-geodetic data. PhD thesis, Massachusetts Institute of Technology.
• [5] Dong, D., Herring, T., and King, R. W. (1998). Estimating regional deformation from a combination of space and terrestrial geodetic data. Journal of Geodesy, 72(4)1200-214, doi:10.1007/s001900050.
• [6] Kotzev, V., Nakov, R., Burchfiel, B., and Dimirov, N. (2005). Crustal motion in Central West Bulgaria from triangulation and GPS data. Comptes rendus de l'Académie Blugare des Sciences, 58(6):699-704.
• [7] Kotzev, V., Nakov, R., Georgiev, T., Burchfiel, B., and King, R. (2006). Crustal motion and strain accumulation in western Bulgaria. Tectonophysics, 413(3-4):127-145, doi:10.1016/j.tecto.2005.10.040.
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