GNGTS 2019 - Atti del 38° Convegno Nazionale

GNGTS 2019 S essione 1.1 37 sviluppoeconomico.gov.it/videpi/en/) , others have been kindly provided by ENI S.P.A in the framework of a research project leaded by Regione Friuli Venezia Giulia – Servizio Geologico (Project: “Mappature delle Faglie Attive”). During the first step we mapped the main seismic facies and we interpreted the main reflectors along 2D seismic reflection profiles displayed in TWT. Then we depth-converted the interpretations obtaining ad preliminary geological model. In the second step we tested different kinematic models to reconstruct the main faults. This procedure allowed to produce balanced models and to calculate the slip rate of the faults (Fig. 1). Our interpretation in the Montello region displays two main anticlines: the larger one corresponds to the Montello hill, the second one is hidden by Quaternary sediments and is located near the village of Arcade and Nervesa. These two anticlines are generated by a reverse fault system, the lower part of which consists of a main fault rooted in the Permian deposits and dissecting the lower part of the Mesozoic carbonate platform. Three secondary splays characterize the upper part and are directly connected with the anticlines. The kinematic model selected to solve the relationship between faults and folds is the fault-propagation folds for all the structures. As both structures, namely the Montello and the Archade-Nervesa faults, cross carbonate sequences that are well known to be seismogenic (e.g. Bonini et al. , 2014), we propose that the slip along this fault system is seismogenic. Acknowledgements. Petroleum Expert Ltd is acknowledged for making available the Move software to the to the University of Trieste. References Bonini L., Toscani G. and Seno S.; (2014): Three-dimensional segmentation and different rupture behavior during the 2012 Emilia seismic sequence (Northern Italy). Tectonophysics, http://dx.doi.org/10.1016/j.tecto.2014.05.006. Burrato P., F. Ciucci F. and Valensise G.; 2003: An inventory of river anomalies in the Po Plain, Northern Italy: evidence for active blind thrust faulting. Annals of Geophysics, 46 (5) Benedetti L., Tapponnier P. and King G.C.P.; 2000: Growth folding and active thrusting in the Montello region, Veneto, northern Italy. Journal of Geophysical Research, 105, pp. 739-766. Cheloni D., D’Agostino N. and Selvaggi G.; 2014: Interseismic coupling, seismic potential, and earthquake recurrence on the southern front of the Eastern Alps (NE Italy), Journal of Geophysical Research, 10.1002/2014JB010954. DISS Working Group; 2019. Database of Individual Seismogenic Sources (DISS), Version 3.2.1: A compilation of potential sources for earthquakes larger than M 5.5 in Italy and surrounding areas.  http://diss.rm.ingv.it/diss/ , Istituto Nazionale di Geofisica e Vulcanologia; DOI:10.6092 /INGV.IT -DISS3.2.1. Romano, M. A., Peruzza, L., Garbin, M., Priolo, E. and Picotti V.; 2019: Microseismic Portrait of the Montello Thrust (Southeastern Alps, Italy) from a Dense High-Quality Seismic Network. Seismological Research Letter, doi: 10.1785/0220180387. ARCHAEOSEISMOLOGICAL AND GEOPHYSICAL SURVEYS TO STUDY THE 847 AD EARTHQUAKE EVIDENCE IN CENTRAL-SOUTHERN ITALY C. Bottari 1,4 , L. Ferranti 2 , R. Di Maio 2 , A. Frisetti 3 , C. De Paola 2 , M. La Manna 2 , E. Piegari 2 , F. Marazzi 3 1 Istituto Nazionale di Geofisica e Vulcanologia, Roma 2, Italy 2 CRUST-DiSTAR, Dipartimento di Scienze della Terra, dell’Ambiente e delle Risorse, Università di Napoli Federico II, Napoli, Italy 3 Facoltà di Lettere, Università degli Studi Suor Orsola Benincasa, Napoli, Italy 4 Istituto Nazionale di Geofisica e Vulcanologia, Roma 1, Italy This study provides deeper insights on our knowledge of the 847 AD earthquake that struck a large area in Central-Southern Italy causing diffuse damages in northern Campania, Molise, and Latium. Through the integration of archaeoseismic observations, geological and geophysical surveys together with a critical review of historical written sources, it was possible