Bollettino Sismico Italiano (BSI), I quadrimestre 2017

Bollettino Sismico Italiano, I quadrimestre 2017, version 1.0 contains 2144 earthquake locations in the Italian region in the time frame between 01-01-2017 and 30-04-2016, locations refer to earthquakes located by INGV. We exclude from this count the earthquakes of the central Italy sequence started on August 24th and not jet completely revised from the Italian seismic bulletin. BSI will make a special report on the sequence. The personnel on duty in the seismic survey room localized in the sequence more than 22700 events of which 9856 with magnitude M>=1.5, and 51 with magnitude M>=3.5(the latter were all revised by BSI including in the Bullettin 16273 picking P and 10362 picking S). The revised events include earthquakes with magnitude greater than 1.5 (1111); to locate the earthquakes we used 453 stations which contributed to the locations with 16273 P phases and 10362 S phases. Data have been recorded by the National Seismic Network, operated by Istituto Nazionale di Geofisica e Vulcanologia (INGV) and regional and international networks operated by several providers. The Bollettino Sismico Italiano is available in Quakeml format and is described on a 4 months basis by a pdf document, but is also available in the ISIDe data-base for the period 1985-today. Both Quakeml files and pdf document are available at CNT webpage (http://cnt.rm.ingv.it/bsi).