GNGTS 2018 - 37° Convegno Nazionale

GNGTS 2018 S essione 1.1 53 Fig. 1 - A) Three-dimensional scheme of the Campotosto seismogenic source. Curved geometry of the fault plane is derived from the seismicity (black dots) distribution on the fault during the 2009 seismic sequence (inset) (from Valoroso et al., 2013). The modelled fault plane is planar and projection of the coseismic slip on a listric fault geometry is for illustrative purpose only. CF = Campotosto fault trace; B) Present seismotectonic and structural 3D scheme of the area under investigation, showing the relationship between the Campotosto fault, Amatrice fault and Mt. Vettore- Mt. Bove fault, with the Ancona-Anzio Fault; the structural scheme of the Mt. Vettore-Mt. Bove seismogenic source is shown in cross-section in inset. geometry matches the Campotosto fault at surface, defined by means of geological observations (e.g. Galadini and Messina, 2001), and fits the causative fault geometry defined by Cheloni et al. (2014) for the 2009 events in this area. This confirmed that the 2009 and 2017 sequences occurred along the same seismogenic structure.