Monitoring in real time the North East Italy seismicity: the OGS-CRS experience with the Antelope software suite

Since 2002 the Centro di Ricerche Sismologiche - CRS (Seismological Research Centre, http://www.crs.inogs.it) of the Istituto Nazionale di Oceanografia e di Geofisica Sperimentale - OGS (Italian National Institute for Oceanography and Experimental Geophysics) in Trieste (Italy) is involved in the EU INTERREG IIIA project “Trans-national seismological networks in the South-Eastern Alps” together with other four institutions: the Zentralanstalt für Meteorologie und Geodynamik (ZAMG) in Vienna (Austria), the Dipartimento di Scienze della Terra (DST) of the Trieste University in Trieste (Italy), the Agencija Republike Slovenije Za Okolje (ARSO) in Ljubljana (Slovenia) and the Protezione Civile della Regione Autonoma Friuli Venezia Giulia (PCFVG) in Palmanova (Italy). The commercial Antelope software suite from BRTT (http://www.brtt.com/) has been chosen as the common basis for real time data exchange, rapid location of earthquakes and alerting. OGS-CRS contributes to the seismological monitoring of the North East Italy area by sharing data from its short period and broad band seismic network covering the Friuli and Veneto regions (http://www.crs.inogs.it/antelope/map/). Antelope is a powerful software suite that easily allows sharing data in real time among neighboring institutions by means of its robust module ‘orb2orb’: however Antelope must be carefully tuned to the actual seismic network configuration. At OGS-CRS we adapted existing Antelope modules and created new ones like: a customized interface to review earthquake locations, a script for automatic moment tensor determination, scripts for web publishing and archiving of earthquake locations, waveforms, state of health parameters and shaking maps, plus scripts for email/SMS/fax alerting. Specific setup of the ‘orbdetect’ module for onset detections and of the ‘orbassoc’ Antelope module for very fast spatial grid search earthquake locations will be described.