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Authors: Solakov, D.* 
Simeonova, S.* 
Christoskov, L.* 
Title: Seismic hazard assessment for the Sofia area
Issue Date: Jun-2001
Series/Report no.: 3/44 (2001)
Keywords: Seismic hazard assestement
central-balkan neotectonic region
attenuation relationships
treatment of uncertainty
Subject Classification04. Solid Earth::04.06. Seismology::04.06.11. Seismic risk 
Abstract: The capital of Bulgaria, Sofia, is situated in the center of the so-called Sofia area. This is the most populated industrial and cultural region of Bulgaria that faces considerable earthquake risk. We apply a version of machine code EQRISK for hazard assessment of the Sofia area according to the Cornell-McGuire approach. The probabilistic seismic hazard analysis is based on a simplified seismogenic model, which is derived from seismic zoning of Bulgaria. We show, using a Monte Carlo approach, that uncertainties in seismic input have a relatively small effect on the PSHA output, especially when compared with uncertainties associated with the attenuation relationship. Our PSHA map shows that a 10–3 annual probability of the PGA exceeds 0.3 g in much of the Sofia area
Appears in Collections:Annals of Geophysics

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