GNGTS 2013 - Atti del 32° Convegno Nazionale

Corfinio; Fig. 1). Therefore, it seems realistic to conclude that such an earthquake was generated by the (at least) 22-km-long rupture of the Mount Morrone fault, with a rough energy release approximating a Mw 6.5 event, as suggested by the empirical relationship between Apennine fault length and magnitude (Galli et al. , 2008). Considering the number of residents in the region, the vulnerability class of each building, and cross-matching these with the possible shaking effects in each locality (i.e., macroseismic site intensity attenuated from the epicentre), if an earthquake like this were to occur now on this fault, it would cause a very severe damage scenario, with thousands of collapses and inhabitants involved in the ruins, both in the Sulmona Plain and in the neighbouring zones. Acknowledgments and notes. We are grateful to the municipality of Popoli, and in particular to Arch. F. Visconti, who provided us all the permissions and the facilities for excavating our trenches. We thank the members of the Marino’s family who allowed the excavations in their olive grove. We also thank P. Boncio, F. Galadini and A. Pizzi who discussed with us the rupture-events inside the trenches. M. Quigley kindly reviewed the manuscript. Damage scenario caused by the fault rupture derives from FaCES (Fault Controlled Earthquake Scenario; Galli et al. , 2002). The views and conclusions contained here are those of the authors, and should not be interpreted as necessarily representing official policies, either expressed or implied, of the Italian Government. References Boncio P., Galli P., Naso G., Pizzi A.; 2012. Surface Fault Rupture Hazard along normal faults: insight from the 2009 L’Aquila earthquake (Mw 6.3, central Italy), observations from global normal faulting earthquakes and implications for earthquake fault zoning . Bull. of the Seism. Soc. Am., 102 , 918-935. 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I: Course notes for USGS workshop “2-D and 3-D inversion and modeling of surface and borehole resistivity data ”. Storrs, CT, 13-16 March 2001. Vittori E., Cavinato G.P., Miccadei E.; 1995: Active faulting along the northeastern edge of the Sulmona basin, central Apennines, Italy . In: Serva L., Slemmons B.D. (eds.), Perspective in paleoseismology. Special Publication-Association of Engineering Geologists, 6 , 115-126. 58 GNGTS 2013 S essione 1.1