Physical Faculty - GeoTEAM            


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 MSc program on renewable energies and energy efficiency at FFET - Plovdiv University 'P. Hilendarski'


Pernik Earthquake: an earthquake of magnitude 5.8 hit Western Bulgaria, on May 22nd, 2012, 25km south west of the Bulgarian capital, Sofia. This shallow earthquake was largely felt in the region and up to Greece and Macedonia. No severe injuries have been reported so far, though a state of emergency was declared in Pernik (the closest city to the epicenter) and superficial damages were observed ... more

One can find the report of the Geological Institute team, BAS on Pernik earthquake here ...

recent publications   


Dipl. Eng. Petar Vulchev provided a copy of his GEORADAR equipment to the Geoteam at the Faculty of Physics and Engineering Technologies of Plovdiv University 'Paisiy Hilendarski'. The team will examine the potential of the equipment to be applied for studying the shallow crust. Find details here ... 



The GeoTEAM at Plovdiv University is working as part of the Faculty of Physics. Its research activity is focused mainly on stochastic modeling of seismicity, non-linear features of complex systems, site effects characteristics (mainly the application of the H/V spectral ratio technique) etc.

Plovdiv University, named in honor of the Bulgarian historian Paisiy Hilendarski, is the city’s leading cultural and scientific institution. It is the largest institution of higher education in Southern Bulgaria, and the second largest Bulgarian university, after St. Kliment Ohridski University of Sofia. The year 2001 marks the university’s fortieth anniversary.

Plovdiv is the second largest city in Bulgaria and the largest administrative, economic, cultural and scientific center in Southern Bulgaria. It was founded in the 2nd millennium BC as a Thracian settlement, and has centuries-old cultural and archaeological heritage. The city which is much older than Athens or Rome, treasures its architectural artifacts located in its Old Town. The unique Renaissance atmosphere of Old Plovdiv charms visitors to the city, and the seven hills on which this part of the city is situated, have their own special charisma.



Seismic Catalogs - a number of catalogs covering the Balkans and some other regions

Aftershock sequence after the earthquake of April 5, 2002 near Krumovo.


- list of earthquakes

- epicenter map

- photos from the epicenter region

- damages



1.   Recent  publications

Gospodinov, D. and Rotondi,  R., (2001), Exploratory analysis of marked Poisson Processes applied to Balkan earthquake sequences, Journ. Balkan Geoph. Soc., 4, 3, 61-68.

Gospodinov, D., V. Karakostas, R. Papadimitriou, (2005), Stochastic modelling of the relaxation process after the M=9.0 Sumatra earthquake of December 26, 2004; preliminary analysis, Proc. of the  4th Con. of the Balkan Geoph. Society, 9-12 October 2005, Bucharest, Romania, pp.327-330

Gospodinov, D., B. Ranguelov, E. Papadimitriou, V. Karakostas, (2005), Statistical methods to analyze seismicity interaction in neighbor zones; application to simulated data, Proc. of the 80-years Anniv.Intern. Sci.Conference on Geology, Sofia, November 17-18, 2005, pp.185-188

Gospodinov D. and Rotondi R., (2006),  "RETAS: a restricted ETAS model inspired, by Bath's law", The 4th Internat.Workshop on Statistical Seismology, The Graduate University for Advanced Studies, Shonan Village, Japan, 9-13 January 2006, ISM (Institute of Statistical Mathematics) Report on Research and Eucation No. 23, 92-95. 

Gospodinov, D., R. Rotondi,(2006), Statistical Analysis of Triggered Seismicity in the Kresna Region of SW Bulgaria (1904) and the Umbria-Marche Region of Central Italy (1997), Pure appl. geophys., 163, 1597–1615

Tranos M., Karakostas V., Papadimitriou E., Kachev V., Ranguelov B., Gospodinov D., (2006), Major active faults of SW Bulgaria: implications of their geometry, kinematics and the regional active stress regime., in Tectonic development of the Eastern Mediterranean region. (Robertson A. and Mountrakis D. - eds.), Geological Society of London, Special publications 260, pp. 671-687.

Karaksotas V., Papadimitriou E., Gospodinov D., Ranguelov B., (2006), Slip distribution for the 1928 Chirpan and Plovdiv main shocks and earthquake triggering., Proc. Intl.Conf. SGEM 2006 - papers., Albena, 12-16 June., vol. 2, p.119-126.

B. Ranguelov, S. Dimitrova, D. Gospodinov, G. Lamykina, (2007). Geodynamics of the South Balkans -    Seismotectonic Model, Fractality and Nonlinear Properties., in Monograph GEODYNAMICS OF THE BALKAN PENINSULA (Ed.G.Milev), Reports of Geodesy, No. 5 (80), pp. 609 – 626.

Papadimitriou E., V. Karakostas, M. Tranos, B. Ranguelov, D. Gospodinov., (2007). Static stress changes associated   with normal faulting earthquakes in South Balkan area., Int. J. Earth Sci. (Geol. Rundsch.), Springer-Verlag,  Volume 96, Number 5, pp. 911-924, DOI: 10.1007/s00531-006-0139-x

Gospodinov D., Ranguelov B., Papadimitriou E. and Karakostas V., (2007), Exploratory Application of a Compound Poisson Process to Model Aftershock Energy Release after the Denali Fault M7.9 earthquake, November 3, 2002., Proc. 17th Intl. Symp. Geodesy’07, Sofia , 8-9.Nov. đp. 303-313.

Gospodinov D., Ranguelov B., Karakosttas V., Papadimitriou E., Tanev A., Kandilarov A., (2007). Preliminary results on the implementration of the H/V spectral ratio technique on ambient vibrations in the town of Jambol. , Ext. abstr. Nat.Conf. Geosciences’07., December 13-14, 2007 , Sofia , 127-128 pp.

Gospodinov D., Karakostas, Papadimitriou E., Ranguelov B., (2007), Analysis of relaxation temporal patterns in Greece through the RETAS model approach.,  Physics of the Earth and Planetary Interiors (PEPI), Vol 165/3-4, pp 158-175, DOI information: 10.1016/j.pepi.2007.09.001

Kandilarov A., Atakan K., Havskov J., Gospodinov D. (2009) An investigation of the significance of local site effects in Plovdiv, Bulgaria, Bulletin of Earthquake Engineering. 7, 181-198, DOI 10.1007/s10518-008-9091

Gospodinov D., Papadimitriou E. and Karakostas V., Ranguelov B, (2009), Energy release patterns in aftershock sequences of North Aegean Sea (Greece) through stochastic modelling, Cashiers du Centre Europeen de Geodynamique et de Seimologie, Vol.28. p. 141-146, ISBN N° 9 782919 89702-5,  

Gospodinov D., E. Marekova ,  A. Marinov, (2010), Verifying the Dependence of Fractal Coefficients on Different Spatial Distributions, AIP Conf. Proc. 1203, 731 (2010), DOI:10.1063/1.3322545

Gospodinov,  D., E. Marekova, A. Marinov, B. Ranguelov, G. Dimitrova, (2010), Applicability of  RETAS  stochastic model to illustrate general seismicity in Izmit region, Turkey, Proc. 6th National conference on Geophysics “20 years Assoc. of Geoph. in Bulgaria”, Sofia, December 17, 2010

Astiopoulos, A.C., Papadimitriou, E., Karakostas, V., Gospodinov, D., Drakatos, G., (2010), Seismicity changes detection during the seismic sequences evolution as evidence of stress changes, Bull. Geol. Soc. Greece, Vol. 43, pp. 1994-2003.

Gospodinov, D., G. Dimitrova (2011), Krumovo seismic sequence analysis of April, 2002, next to Plovdiv, Bulgaria, through a geographic information system (GIS), PU 'P. Hilendarski' scientific papers, vol.36, 4, 2011-Physics, p. 19-26

Gospodinov, Dragomir, Alexander Marinov, and Elisaveta Marekova (2012), Testing fractal coefficients sensitivity on real and simulated earthquake data, Acta Geophys, 60(3), 794, doi:10.2478/s11600-012-0013-0

Papadimitriou,  E., D. Gospodinov , V. Karakostas  & A. Astiopoulos (2013), Evolution of the vigorous 2006 swarm in Zakynthos (Greece) and probabilities for strong aftershocks occurrence, J Seismol, Volume 17 (2), DOI 10.1007/s10950-012-9350-3

Karakostas, V., Papadimitriou, E., Gospodinov, D. (2014),   Modeling the 2013 North Aegean (Greece) seismic sequence: geometrical and frictional constraints, and aftershock probabilities, Geophys. J. Int. (2014), doi: 10.1093/gji/ggt523