GNGTS 2017 - 36° Convegno Nazionale

GNGTS 2017 S essione 2.2 347 Site characterization of the national seismic network of Italy: results at five case studies G. Di Giulio 1 , P. Bordoni 2 , G. Cultrera 2 , M. Vassallo 1 , D. Famiani 2 , G. Milana 2 , F. Cara 2 , A. Mercuri 2 , M. Pischiutta 2 , E. D’Alema 3 , S. Lovati 3 , C. Mascandola 3 , M. D’Amico 3 , F. Pacor 3 , C. Felicetta 3 , M. Massa 3 , L. Luzi 3 , R. Puglia 3 , A. Fodarella 4 , S. Pucillo 4 , R. Cogliano 4 , G. Riccio 4 , D. Di Naccio 1 , S. Amoroso 1 , L. Cantore 1 , M. Cattaneo 5 , C. Ladina 5 , R. Bonomo 6 , C. D’Ambrogi 6 , M. D’Orefice 6 , P. Di Manna 6 , D. Fiorenza 6 , R.M. Gafà 6 , G.M. Monti 6 , M. Roma 6 , L. Vita 6 1 Istituto Nazionale di Geofisica e Vulcanologia, L’Aquila, Italy 2 Istituto Nazionale di Geofisica e Vulcanologia, Roma, Italy 3 Istituto Nazionale di Geofisica e Vulcanologia, Milano, Italy 4 Istituto Nazionale di Geofisica e Vulcanologia, Grottaminarda, Italy 5 Istituto Nazionale di Geofisica e Vulcanologia, Ancona, Italy 6 ISPRA Sistema Nazionale Protezione Ambiente, Roma, Italy The seismic characterization of monitoring sites is a fundamental step in any study dealing with the estimation of site effects. The correct assessment of local amplification is also important in the definition of hazard maps, in order to taking into account the possible role of site effects in modifying the ground motion recording with respect to an ideal bedrock site. In the framework of the activity between Department of Civil Protection (DPC) and Istituto Nazionale di Geofisica e Vulcanologia (INGV) (DPC-INGV 2012-202, Allegato B2, Obiettivo 1, Task B), a campaign of site characterization started in 2016 for the estimation of the seismic response at some stations belonging to the National Accelerometric Network (RAN) and to National Seismic Network (RSN). The accelerometric data of these stations are collected in the ITACA database (Pacor et al., 2011) and in a structured archive managed by INGV (please refer to Bordoni et al. in s������ ��� �� ���� ������������ ession 2.1 of this conference). Fig. 1 - Plan view of the two 2D seismic arrays deployed in the area of ROM9 site (IV network). The yellow and red points indicate the twelve stations of the 2D array in passive configuration (named “small” and “big” array, respectively). All stations are equipped with Reftek R130 digitizer and Lennartz 3D-5sec velocimetric sensors. The filled circle symbol indicates the ROM9 position.