The 2013 Lunigiana (Central Italy) earthquake: Seismic source analysis from DInSAR and seismological data, and geodynamical implications for the northern Apennines

Neogene 3‐D Structural Architecture of The North‐West Apennines: The Role of the Low‐Angle Normal Faults and Basement Thrusts

“…Finally, our new presented data may have implications for the seismotectonic model and interpretations of the studied region. In contrast with the currently accepted model (Boncio et al, 2000;Di Naccio et al, 2013;DISS Working Group, 2018;Meletti et al, 2008;Pezzo et al, 2014;Stramondo et al, 2014) we argue against the major role of Lunigiana fault as a relevant seismogenic LANF structure of the inner north-west Apennine. On the contrary we suggest that the fault systems seismically active and cause of hazards issues in the region are the high-angle, west dipping faults, for example, the Compione-Comano System and the transversal North Apuane Fault.…”

“…Considering that (i) in our revision of Levanto-Parma seismic line (Figure 6), the HANFs crosscut the cover basement detachment and that (ii) the distribution of seismicity supposed to mark the trace of the detachment below the Lunigiana is~5-km deeper of the fault trace (Eva et al, 2014), we argue against the major role of Lunigiana fault as a relevant seismogenic LANF structure of the inner North West Apennines. On the contrary we suggest that the fault systems relevant for seismotectonic interpretation and hazards issue in the region are the high-angle, west dipping faults, for example, the Compione-Comano System as well as the transversal North Apuane Fault which both cut into the basement deeper then 4-5 km in agreement with the current sismicity of the area and the Lunigiana 2013 Earthquake ipocenter (Eva et al, 2014;Molli et al, 2015;Pezzo et al, 2014;Stramondo et al, 2014).…”

“…The description of HANFs and LANFs in the studied area has also some major seismotectonic implications as hereafter suggested. Following an original working hypothesis of Boncio et al (2000), different authors (e.g., Di Naccio et al, 2013;DISS Working Group, 2018;Meletti et al, 2008;Pezzo et al, 2014;Stramondo et al, 2014) support a regional seismotectonic model of two LANFs called the Lunigiana and Garfagnana LANFs. These LANFs are considered part of the Etrurian Fault System, a major active east dipping extensional fault system which extends over more than 350 km along strike controlling the distribution of seismicity in northerncentral Italy (Barchi et al, 1998;Boncio et al, 2000).…”

“…The northern line (Figure 1) was first interpreted by Reutter et al, (1983) and Hill and Hayward (1988) and more recently revised by Bernini (1991), Artoni et al (1992), Argnani et al (1997), Bernini et al (1997), Bernini and Papani (2002), Carlini et al (2013) among others. Moreover, the interpretation of this cross section has been widely used as framework for seismotectonic interpretations of the region (Boncio et al, 2000;Bonini et al, 2016;Brozzetti et al, 2007;Di Naccio et al, 2013;Eva et al, 2014;Pezzo et al, 2014).…”

Growth of a sinkhole in a seismic zone of the northern Apennines (Italy)

“…The Prà di Lama sinkhole is located at the intersection between two seismically active faults: the Corfino normal fault (Di Naccio et al, 2013; ISIDe working group, 2016) and the right-lateral strike-slip M. Perpoli-T. Scoltenna fault that recently generated the M w 4.8 earthquake in January 2013 ( Fig. 1) (Pinelli, 2013;Molli et al, 2017). Hot water springs are also present at Prà di Lama (Bencini et al, 1977;Gherardi and Pierotti, 2018).…”