The observatory is part of Italy's National Institute of Geophysics and Volcanology (INGV). Other reporting on topics such as deformation appears on the Observatory's website (see Information Contacts, below). The observations reported by the Vesuvius Observatory (who provided the material for this report) were limited to those associated with the earthquakes and related seismic analysis. Analysis revealed that the strain release rate of the 7 September swarm fell within values seen for other swarms during the last 20 years.
Peak ground accelerations (PGA) were non-trivial (up to ~0.5 g), and some earthquakes were widely felt by area residents. The earthquakes chiefly were contained within two swarms (with events up to M w 1.9 M w indicates moment magnitude) occurring on 7 and 15 September. Analysis of seismic swarms (M w =1.9 ~219 events) during September 2012Ģ19 low-magnitude earthquakes occurred at Campi Flegrei during September 2012, a comparatively large number with respect to the previous year (figure 22).
0 kommentar(er)
