Information - SM15 Groundshaking scenarios, ground motion models and site effects (Conveners Fabrice Cotton and Stefano Parolai)
Estimating the amplitude of ground motion as a function of earthquake magnitude and distance is essential to seismic hazard assessment and for designing earthquake resistant buildings.
Data from moder regional and national digital accelerometric networks in Europe are currently providing high quality accelerograms data base that are enlarging the already available analogue recording data sets. Due to the recent technical improvements of these networks the number of empirical, semi-empirical and calibrated-theoretical ground motion relations in Europe is increasing. The first goal of the session is then :
- to present ground motion relations derived recently in Europe and in the mediterranean region with special emphasis to uncertainty analysis
-to discuss the applicability of ground motion models based on weak motion data for strong motion prediction
- to compare existing ground motion models with data from recent earthquakes occurred in Europe and in the Mediterranean region.
Macroseismic observations made after destructive events have provided evidences of the influence of near-surface geology and of topography in determining damage
distribution. Since most populated areas (e.g. mid to large cities) are settled in correspondence of sedimentary basins, better understanding of the influence of the site conditions on the seimic signal modification is needed by the seismological and engineering communities, not only for providing more accurated microzonation maps for urban planning but also for deriving attenuation relationships that better take them into account. Therefore, the second goal of this session is :
- to present a review of the various techniques for site response estimation based on empirical or theoretical approaches.
- to compare the results obtained by different approaches and using different data. Particularly welcome are the results obtained by analysing data from recent earthquakes. Numerical investigations that focus on these themes are strongly encouraged as well.
Preliminary List of Solicited Speakers
Co-convener : Stefano Parolai
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