Group, split or create new events based on the hypocentre score and the hypocentre parameter comparison.Compare the hypocentre location and origin time with similarly located hypocentres.Score hypocentres from the phase data used to locate them (azimuthal and secondary azimuthal gap, distance range, network distribution, number of stations, number of phases, etc).The main features of the event grouping are: An automatic thresholding process decides whether each event should be manually reviewed by an ISC analyst/editor, which will also be relocated by the ISC, depending on the available data.
are automatically grouped into events, which form the basis of the ISC Bulletin. These data, which may include hypocentres, phase arrival-times, focal mechanism solutions, etc. The ISC Bulletin relies on data contributed by seismological agencies from around the world. purchase CD-ROMs with monthly files of the Reviewed ISC Bulletin.access it via the FTP protocol (using FTP software) manually from .uk.download monthly files (ISF or pdf) of the Reviewed ISC Bulletin from the ISC ftp (via http) site.using a web services client to access and search ISC Bulletin data.