3D NUMERICAL MODELLING OF THE SEISMIC RESPONSE OF THE THESSALONIKI URBAN AREA: THE CASE OF THE 1978 VOLVI EARTHQUAKE

Smerzini C. et al, BGSG-v50-pp1433-1442.2016
Published: Jul 27, 2016
DOI: https://doi.org/10.12681/bgsg.11857
Keywords:
deterministic seismic hazard seismic wave propagation Spectral Element Method
C. Smerzini
Department of Civil Engineering, Aristotle University of Thessaloniki
K. Pitilakis
Department of Civil Engineering, Aristotle University of Thessaloniki
K. Hashemi
Department of Civil and Environmental Engineering, Politecnico di Milano
Abstract

This study aims at showing the numerical modelling of earthquake ground motion in the Thessaloniki urban area, using a 3D spectral element approach. The availability of detailed geotechnical/geophysical data together with the seismological information regarding the relevant fault sources allowed us to construct a large-scale 3D numerical model suitable for generating physics based ground shaking scenarios within the city of Thessaloniki up to maximum frequencies of about 2 Hz. Results of the numerical simulation of the destructive MW6.5 1978 Volvi earthquake are addressed, showing that realistic estimates can be obtained. Shaking maps in terms of ground motion parameters such as PGV are used to discuss the main seismic wave propagation effects at a wide scale.

Article Details
  • Section
  • Seismology
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