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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:46 |
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Conference: Bucharest University Faculty of Physics 2004 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
Input parameters for the seismic hazard assessment in South-Western Romania territory
Authors:
E. Popescu, A. I. Moldovan, E. Oros, M. Radulian
Affiliation:
National Institute for Earth Physics, NIEP, Calugareni 12, Bucharest-Magurele, Romania,
E-mail
Keywords:
seismogenic sources, seismic hazard, probabilistic assessment
Abstract:
The seismic hazard assessment in dense-populated areas and the strategic objectives design are based on the study of seismicity of the seismogenic sources (which can have an effect at the site above a specified minimum level that is considered risky) and the attenuation between focus and site. The purpose of this paper is to provide a complete set of information required for a probabilistic assessment of the seismic hazard in the Southwest Romania relative to the following seismic sources: Banat zone (BA), Danubian zone (DA), and Norteast Serbia zone (IBAR) all of them in the crust domain. Extremely vulnerable objectives are present in the Southwestern part of Romania and in the north-eastern part of Serbia, including the city of Timisoara and the "Portile de Fier" dam. The analysis that we propose implies: (1) geometrical definition of the seismic sources, (2) estimation of the maximum possible magnitude, (3) estimation of the frequency – magnitude relationship and (4) estimation of the attenuation law.
As an example, the obtained input parameters are used to evaluate the seismic hazard distribution due to the crustal earthquakes applying the McGuire’s procedure (1976). These preliminary results are in good agreement with the previous research based on deterministic approach (Radulian et al., 2000).
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