Configurazione del sistema PRESTo per l’allerta rapida di eventi sismici (early warning sismico)

Abstract

The present work is part of the 2015 ART-IT project (Early Earthquake Alert in Italy). Its main purpose
is the estimation of the PRESTo system [PRobabilistic and Evolutionary early warning SysTem,
Iannaccone et al., 2010; Satriano et al., 2011] performance through an ad hoc calibration of the
software configuration parameters using only the accelerometric networks installed in an area of
Central Italy, selected as test site. The correct operation of an early warning system could be used for
a more correct and effective management of a seismic emergency from the first seconds after the
occurrence of a strong earthquake, allowing to adopt sudden actions to reduce the exposure and,
consequently, the seismic risk. To evaluate the performance of the software, it is necessary to carry out an a priori calibration phase
of the configuration parameters in order to guarantee the best performance in terms of seismic event
detection and reliability in the estimation of hypocentral parameters. The tests were carried out by
means of a series of recorded waveforms simulations considering a selected catalogue of earthquakes
with a magnitude range between 3.9 and 5.4, occurred in the Amatrice-Norcia area, with
a magnitude range between 3.9 and 5.4, occurred in the Amatrice-Norcia area, with particular
focus on the seismic sequence of January 2017.