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Seismic Hazard Assessment

 
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Detailed seismic hazard study is accomplished using both probabilistic and deterministic methods incorporating the recently gained knowledge on the definition of seismic sources, seismicity models, attenuation of strong ground motion parameters and soil conditions.

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Probabilistic seismic hazard is based on the expected values of the parameters of the seismic intensity (macroseismic intensity, peak ground and spectral values etc.) for various mean return periods. Parametric analysis of the various input parameters are performed in order to examine their influence on the final output. Both time dependent and time independent seismicity models will be applied. Using the available observations of the macroseismic data bank the results of the probabilistic hazard assessment (in terms of macroseismic intensities) are compared with the hazard analysis based on the observed data.

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Deterministic and stochastic seismic hazard assessment are be performed using the seismological parameters of the main faults in the broader area. For this purpose - after necessary validation - forward modeling will be performed using properties of the seismic source, propagation path and site conditions.  The results of all the aforementioned methods having been applied are compared, similarities and/or differences are examined before their use as input motion to seismic risk assessment at the Test Site and implicitly for the whole region and the affected major Metropolitan center located in the vicinity.

 

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 Copyright 2003-2004 by Aristotle University Thessaloniki, Dept. of Civil Eng., Lab. of Soil Mechanics and Foundation Eng.. All rights reserved.
Last Update: 27/02/04.