GNGTS 2023 - Atti del 41° Convegno Nazionale

Session 2.1 GNGTS 2023 Figure 3: between-event ( δ Be) residuals versus hypocentral depth at 0.01 s, for the six clusters previously identified (Figure 2). Dots are colored based on magnitude. Acnowledgments The authors are grateful to Arianna Cipriano, Sara Sgobba and Chiara Felicetta for their support in this research activity and fruitful remarks. This study has been developed as part of a project funded by the EDF (Electricité de France). References Bindi D. and Kotha S. R.; 2020: Spectral decomposition of the Engineering Strong Motion (ESM) flat file: regional attenuation, source scaling and Arias stress drop. Bulletin of Earthquake Engineering, 18(6), 2581-2606, doi: 10.1007/s10518-020-00796-1. Brunelli G., Lanzano G., Luzi L., and Sgobba S.; 2022: Data-driven zonations for modelling the regional source and propagation effects into a ground motion models in Italy , submitted to Soil Dynamics and Earthquake Engineering. Caporali A., Braitenberg C., and Massironi M.; 2005: Geodetic and hydrological aspects of the Merano earthquake of 17 July 2001. Journal of Geodynamics, 39(4), 317-336, doi: 10.1016/j.jog.2005.01.001. Hartigan J.A. and Wong M.A.; 1979: Algorithm AS136: a K-means clustering algorithm. Applied Statistics, 28(1), 100, doi: 10.2307/2346830. Lanzano G., Luzi L., Pacor F., Felicetta C., Puglia R., Sgobba S., and D’Amico M.; 2019: A Revised Ground‐Motion Prediction Model for Shallow Crustal Earthquakes in Italy. Bulletin of the Seismological Society of America, 109(2), 525-540, doi: 10.1785/0120180210. Pondrelli S., Morelli A., and Ekström G.; 2004: European-Mediterranean regional centroid-moment tensor catalog: solutions for years 2001 and 2002. Physics of the Earth and Planetary Interiors, 145(1-4), 127-147, doi: 10.1016/j.pepi.2004.03.008. Ramadan F., Smerzini C., Lanzano G., and Pacor F.; 2021: An empirical model for the vertical‐to‐horizontal spectral ratios for Italy. Earthquake Engineering & Structural Dynamics, 50(15), 4121-4141, doi: 10.1002/eqe.3548. Yang H., and Yao S.; 2021: Shallow destructive earthquakes. Earthquake science, 34(1), 15-23, doi: 10.29382/eqs-2020-0072. Corresponding author : claudia.mascandola@ingv.it