Ur 3.13-MAXIMUM Observable Shaking (Mos) Maps of Italy

Episodes

Italy has a long-standing tradition of earthquake investigations. Seismologists can rely on one of the longest and most detailed records of historical seismicity, 20 years of homogeneous and reliable instrumental data, systematic and widespread active stress data and a comprehensive database of potential seismogenic sources. Here we describe these datasets and discuss how they may help us anticipate the large earthquakes of the future.

Seismological Research Letters, 2013

Tables of felt earthquakes in Naples and analysis for historical completeness; overview of geological settings of Naples; ground ShakeMap for the 84 earthquakes in Naples with I s > 4 DATA One crucial point underpinning the atlas is the accurate collection of seismological knowledge for the area under study.

Annals of Geophysics

The central Italy seismic sequence, started with the Mw = 6.0 Amatrice earthquake on August 24th 2016, is the first significant one after the Italian Seismic Bulletin (BSI) changed its analysis strategies in 2015. These new strategies consist on the release of the BSI every four months, the review of the events with ML ≥ 1.5 and the priority on the review of events with ML ≥ 3.5. Furthermore, in the last year we improved the bulletin tools and made possible the analysis of all the stations whose data are stored in the European Integrated Data Archive (EIDA). The new procedures and software utilities allowed, during the first month of 2016 emergency, to integrate, in the Bulletin, the temporary stations installed by the emergency group SISMIKO, both in real–time transmission and in stand-alone recording. In the early days of the sequence many of the BSI analysts were engaged in the monitoring room shifts, nevertheless at the end of August all events occurred in those days with ML ≥ 4...

Chapter 2 describes active faults in the region that produced the 24 August 2016 earthquake. Each sub-section describes geological data (mainly based on criteria from Falcucci et al., 2016) and reviews historical seismicity, which collectively provide the basis for inferences of current activity. Data on the past earthquakes and the damage distribution have been derived from Rovida et al. (2016). Two faults among those presented below (namely the Montagna dei Fiori-Monti Gemelli and Leonessa faults) are considered inactive in the sense than they are likely unable to generate earthquakes of sufficient size to produce primary surface rupture (i.e., M>6.0±0.2; Falcucci et al., 2016). The discussion about inactivity is relevant for three reasons: i) They are normal faults with a trend consistent with the current tectonic regime; ii) They are characterized by geomorphologic features that could be incorrectly associated with current activity; and iii) Activity has been hypothesised for one of them (Leonessa) in the available literature. Finally, we discuss an unsolved seismogenic issue, related to the earthquake that struck in 1950 along the Gran Sasso chain (M 5.7).

2004

This paper describes the main characteristics, the evolution, and the structure of the Database of Individual Seismogenic Sources (DISS) and particularly of its release of early 2007. The Database contains the results of the investigations of the active tectonics in Italy during the past 20 years. The first two sections of this paper document the recent evolution in mapping and archiving Italian active fault data in relation to important achievements in the understanding of Italian tectonics, some of which were spurred by significant earthquakes. The central sections describe the current structure of the Database, the reasons for its assumptions and data categories, its current contents, its evolution through several years of improvements. The last section describes how the current contents of the Database correspond with the existing strain and stress data available from focal mechanism, borehole breakout, and GPS data for the whole of Italy. The Database supplies a fresh and unified view of active and seismogenic processes in Italy by building on basic physical constraints concerning rates of crustal deformation, on the continuity of deformation belts and on the spatial relationships between adjacent faults, both at the surface and at depth.

Natural Hazards, 2010

Strong ground-shaking mapping soon after a moderate-to-large earthquake is crucial to recognize the areas that have suffered the largest damage and losses. These maps have a fundamental role for emergency services, loss estimation and planning of emergency actions by the Civil Protection Authorities. This is particularly important for areas with high seismic risk levels, such as the Campania-Lucania Region in