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Authors: Tramelli, A.* 
Galluzzo, D.* 
Di Vito, M. A.* 
Title: Site effects at the Campi Flegrei,preliminary results
Issue Date: 2010
Series/Report no.: 80/(2010)
Keywords: Site effects
Campi Flegrei
Subject Classification04. Solid Earth::04.04. Geology::04.04.99. General or miscellaneous 
04. Solid Earth::04.06. Seismology::04.06.09. Waves and wave analysis 
04. Solid Earth::04.08. Volcanology::04.08.05. Volcanic rocks 
Abstract: The Campi Flegrei caldera is a complex structure with a high population density, located west of the city of Naples. In addition of being an active volcano it is characterized by a high seismic hazard due to both Appennines regional earthquakes and to local earthquakes occurring during the bradyseismic crises. These unrest phenomena are characterized by slow ground vertical movements, particularly active in the central part of the caldera, and by a high number of low-magnitude earthquakes. In this context, the determination of the site transfer functions of the area has a strong relevance for the Civil Defense aimed to determine the hazard of the area. We have calculated the site transfer function with different techniques (H/V and Generalized Inversion technique) and have collected data on the local geology with the aim of correlating the site transfer functions with lithology and topography. This analysis has been performed on three areas: the Astroni crater, the Camaldoli hill and the Agnano plain. A future development will be to extend this analysis to the whole Campi Flegrei area.
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