Abstract
<p>After the recent destructive L’Aquila 2009 and Emilia-Romagna 2012 earthquakes, a sudden M<span>w </span>6.0 <span style="font-size: 10px;">seismic event hit Central Italy on August 24, 2016. A low population density characterizes the area but, </span><span style="font-size: 10px;">due to its nighttime occurrence, about 300 victims were registered. This work presents the first preliminary </span><span style="font-size: 10px;">results of a macroseismic survey conducted by two teams of the University of Padova in the territories </span><span style="font-size: 10px;">that suffered major damages. Macroseismic intensities were assessed according to the European </span><span style="font-size: 10px;">Macroseismic Scale (EMS98) for 180 sites.</span></p>
Highlights
On August 24, 2016, at 3:36 local time (1:36 UTC), most of the inhabitants of central Italy were woken up by a MW 6.0 earthquake that occurred at the boundaries of Lazio, Umbria, Marche and Abruzzo regions
The Central Apennines sector is highly prone to seismic hazard: in recent years other devastating events occurred with epicenters located in a range of 30 km far from the actual one, like the April 6, 2009 (MW 6.29) L’Aquila event and the 1997 Umbria seismic sequence, characterized by a MW 5.97 mainshock
According to the Parametric Catalogue of Italian Earthquakes (CPTI15) [Rovida et al 2016], historical information reveals that the seismic activity in the Monti Sibillini area is frequent and in the past centuries was characterized by highly destructive events: from the eighteen century a mean annual rate of about 0.25 events with magnitude MW higher than 4.0 was observed
Summary
On August 24, 2016, at 3:36 local time (1:36 UTC), most of the inhabitants of central Italy were woken up by a MW 6.0 earthquake that occurred at the boundaries of Lazio, Umbria, Marche and Abruzzo regions. The Central Apennines sector is highly prone to seismic hazard: in recent years other devastating events occurred with epicenters located in a range of 30 km far from the actual one, like the April 6, 2009 (MW 6.29) L’Aquila event and the 1997 Umbria seismic sequence, characterized by a MW 5.97 mainshock. The first evidences of damage induced by earthquake occurrences in the area of Accumoli were related to the effects of the July 1627 Monti della Laga event (MW 5.3, IO 7-8 MCS) [Monachesi and Castelli 1992]. It was followed by the severe October 7, 1639 (MW 6.21, IO 8-9 MCS) [Castelli 2013] Amatrice earthquake, that seemed very similar to the actual seismic scenario. The survey was continuously updated until September 6, 2016 to better define the damage effects induced by the mainshock event
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