Technical staff members include two seismographic technicians, one record analyst, 1.5 FTE of computer support personnel, and ten graduate research assistants. After ten years of operation of computer-based digital seismic acquisition, over 25,000 local events have been located, and these and many more regional and teleseismic events and blasts have been archived, leading to over archived 500,000 digital seismograms. Earthquake data are now manipulated using derivatives of the CUSP and Earthworm systems developed by the USGS, allowing us to interchange both real-time and archived catalog and seismogram data with the SCSN network through the SCEC Data Center at Caltech. Computer hardware consists of fourteen Sun workstations with speeds from 33 to 167 MHz, six Pentium II UNIX workstations, numerous PCs and Macintoshes, and a VAX cluster system. These processors are used mainly for research applications and provide a basis for analysis of the accumulating network data base.
Additional equipment is available for field work and special investigations.
The seismology group has 15 portable Reftek seismographs and 8 PRS-4 portable digital seismographs.