GNGTS 2019 - Atti del 38° Convegno Nazionale

334 GNGTS 2019 S essione 2.2 the two alignments known as the Piedmontese seismic arc and the Briançonnais seismic arc, affected for example in the recent past by the seismic crisis of Barcellonette (2014). Cross-border collaboration is therefore important, with the exchange of data between the institutions involved in the management of seismic risk, from monitoring to impact assessment, and with the comparison of data analysis systems performances. In this context, the operating chains, which briefly include the monitoring networks and the analysis systems for the localization and the estimation of the characteristics of the seismic source, the estimation of the ground-motion propagation and the assessment of the impact on the exhibited assets, mainly involve, on the Italian side, Arpa Piemonte, with the support of the University of Genoa, and Regione Piemonte, on the French side, the CNRS and the BRGM. The signals of Italian and French stations in the area are therefore shared in real time, since 2010 (project Interreg ALCOTRA RISE). The ShakMap code of the USGS (Wald et al. , 2005) is used to estimate the shaking on the territory on both sides. French side. On the French side SeisComP 3code (Weber et al. , 2007) is used by CNRS for the seismological processing and then ShakeMap4 code from USGS (Worden and Wald, 2016). Magnitude is estimated as Ml in SeisComP3 with a set of parameters that have been tested in the region and which for magnitude under 5 give results compatible with ReNaSS magnitudes (French national sesmic network). No data available for larger magnitude. A Mw estimation is calculated by a CNRS software (Cara et al. , 2017), but not automatically used. ShakeMapcodeisconfiguredwiththeattenuationlaw(Kotha etal. ,2016)proposedforNorthernand Central Italy. The records informations are used asmuch as possible to control themaps produced. The data of ‘did you feel it’ questionnaires interpreted by BCSF are included, as soon as available through web-services, in the shaking maps representation (Fig. 2). At the moment the use of Italian information is manual. The shaking maps are shared with BRGM, which compares georeferenced intensity data with vulnerability zonation, to get the number of buildings exposed to different levels of intensity and with different vulnerability class. The vulnerability zonation, with static data, is available with national coverage and with sub-municipal resolution. The maps are revised as soon as manual revision of the location and magnitude are available, Fig. 1 - a) Vulnerability model. b) Vulnerability zonation. c) ShakeMap data.