GNGTS 2017 - 36° Convegno Nazionale

GNGTS 2017 S essione 1.1 47 effectively ignored, especially in the case in which we have no many station magnitudes. Released energy ranged between 10 5 and 10 15 J. It is estimated from the integral of the squared spectra velocity (Andrews, 1986). The constant ratio E S /M 0 has a slope larger than 1 that suggests a possible breakdown of the source scaling self similarity. This is also confirmed by the source parameters that don’t satisfy the relationship of M 0 ∝ f C −3 . The radiated energy as function of seismic moment for M W greater than 3.5, shows that aftershocks are aligned with the larger events (Fig 1). As in Picozzi et al. (2017), the scaled energy of these events are the same order of the magnitude, suggesting similar dynamics of faulting. The application of the automated algorithm in near real time provides important insight into the ground motion characteristic to obtain a rapid characterization of seismic source parameters in case of a strong event, for research, engineering purposes and emergency services. References Andrews D.J.; 1986: Objective determination of source parameters and similarity of earthquakes of different size. Maurice Ewing series, 6, American Geophysical Union, Geophysics Monograph, 37,Washington DC, pp 259- 267 Gallo A., Costa G., Suhadolc P. ; 2014: Near real-time automatic moment magnitude estimation . Bulletin of Earthquake Engineering, Vol. 12, pp 185-202, ISSN: 1570-761X, doi: 10.1007/s10518-0139565-x Lavecchia G., Castaldo R., de Nardis R., De Novellis V., Ferrarini F., Pepe S., Brozzetti F., Solaro G., Cirillo D., Bonano M., Boncio P., Casu F., De Luca C., Lanari R., Manunta M., Manzo M., Pepe A., Zinno I., Tizzani P.; 2016: Ground deformation and source geometry of the 24 August 2016 Amatrice earthquake (Central Italy) investigated through analytical and numerical modeling of DInSAR measurements and structural-geological data. Geophys. Res. Lett., 43, 12,389–12,398, doi:10.1002/2016GL071723. Picozzi, M., D. Bindi, P. Brondi, D. Di Giacomo, S. Parolai, and A. Zollo; 2017: Rapid determination of P wavebased energy magnitude: Insights on source parameter scaling of the 2016 Central Italy earthquake sequence. Geophys. Res. Lett., 44, 4036–4045, doi:10.1002/2017GL073228. Pondrelli S., Salimbeni S., Perfetti P., 2016: Moment tensor solutions for theAmatrice 2016 seismic sequence. Annals of Geophysics, 59, Fast Track 5, 2016; DOI: 10.4401/ag-7240. THE NEW SEISMOTECTONIC MAP OF THE EMILIA-ROMAGNA REGION AND SURROUNDING AREAS L. Martelli 1 (coord.), M. Bonini 2 , L. Calabrese 1 , G. Corti 2 , G. Ercolessi 1 , F.C. Molinari 1 , L. Piccardi 2 , S. Pondrelli 3 , F. Sani 4 , P. Severi 1 1 Regione Emilia-Romagna, Servizio Geologico Sismico e dei Suoli, Bologna, Italy 2 C.N.R., Ist. Geoscienze e Georisorse, Sez. Firenze, Italy 3 I.N.G.V., Sez. Bologna, Italy 4 Dip. Scienze della Terra, Università degli Studi di Firenze, Italy Introduction. Geo-thematic maps are fundamental documents for a territorial planning that takes into account natural elements to determine the local hazard and to apply effective policies for mitigation of natural hazards and sustainable management of the territory and its resources. The presence of very young morphologies, the evidence of recent uplifts and frequent seismicity testify that the tectonic processes are still active in Emilia-Romagna. Given the concentration of inhabitants and productive activities, the artistic heritage and the vulnerability of buildings, Emilia-Romagna, although not characterized by a particularly high seismic hazard, is nevertheless a region with a high seismic risk. To have an overview of the active tectonics and seismic hazard, the Emilia-Romagna Region published in 2004, in collaboration with the C.N.R., the first edition of the regional seismotectonic map (Boccaletti et al. , 2004). However, since 2004 many seismic events have