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Abstract: In this paper the results of the numerical analyses, related to a site of the Abruzzo Region (Celano-AQ), finalized to the evaluations of site effects, are shown. The aim of the work was to give a methodology and results that can be used in seismic risk analysis, at the level of urban planning. Therefore, a series of geologic, geomorphologic, geotechnical and geophysical analyses have been carried out to characterize the lithological units and to identify the areas affected by site effects. The expected seismic inputs are individuated and two-dimensional numerical analyses have been done. The results are presented in terms of elastic pseudo-acceleration spectra and amplification factors, computed as the ratio between spectral intensity of output and input, in the period ranges 0.1–0.5 and 0.1–2.5s. [Copyright &y& Elsevier]

Abstract: A quantitative prediction of seismic site effects requires the definition of a subsoil parametric model for ground motion numerical modelling. This paper describes an application of integrated geophysical methods to define an earthquake engineering parametric model for the seismic zonation of the municipal area of Celano, Italy. In municipal areas of such extent, particularly in case of complex geology, subsurface characterization is an optimization procedure, where the objective function to be minimized is the uncertainty related to the subsoil features, under the constraint of fixed resources and logistical limitations. In the particular case of Celano, correlation between different geophysical results was very profitable in discriminating different geological scenarios in the historical centre and in areas designed for urban expansion, while defining the elastic properties of the near-surface deposits throughout the municipal area. [Copyright &y& Elsevier]