Acquiring, archiving, analyzing and exchanging seismic data in real time at the Seismological Research Center of the OG S in Italy: an updated view

Montpellier (France)

The Centro di Ricerche Sismologiche (CRS, Seismological Research Center) of the Istituto Nazionale di
Oceanografia e di Geofisica Sperimentale (OGS, Italian National Institute for Oceanography and
Experimental Geophysics) in Udine (Italy) after the strong earthquake (magnitude M=6.4) occurred in
1976 in the Italian Friuli-Venezia Giulia region, started to operate the North-east Italy (NI) seismic
network: it currently consists of 11 very sensitive broad band and 22 more simple short period seismic
stations, all telemetered to and acquired in real time at the OGS-CRS data center in Udine. Real time data
exchange agreements in place with other Italian, Slovenian, Austrian and Swiss seismological institutes
lead to a total number of 90 seismic stations acquired in real time, which makes the OGS the reference
institute for seismic monitoring of Northeastern Italy.
Since 2002 OGS-CRS is using the Antelope software suite as the main tool for collecting, analyzing,
archiving and exchanging seismic data in the framework of the EU Interreg IIIA project “ Trans-national
seismological networks in the South-Eastern Alps”. SeisComP is also used as a real time data exchange
server tool. At OGS-CRS we then adapted existing programs and created new ones like: a customized
web-accessible server to manually relocate earthquakes, a script for automatic moment tensor
determination, scripts for web publishing of earthquake parametric data, waveforms, state of health
parameters and shaking maps, noise characterization by means of automatic spectra analysis, plus scripts
for mail/SMS/fax alerting. A new OGS-CRS real time web site has also been recently designed and made
operative in the framework of the Italian P C-INGV S3 P roject.