ANZA Seismic Network- From Monitoring to Science
- Vernon, F.L., Eakins, J., Martynov, V., Newman, R.L., Offield, G., Hindley, A. and Astiz, L.

The ANZA Seismic Network (http:eqinfo.ucsd.edu) utilizes broadband and strong motion sensors with 24-bit
dataloggers combined with real-time telemetry to monitor local and regional seismicity in southernmost
California.  The ANZA network provides real-time data to the IRIS DMC, California Integrated Seismic Network
(CISN), other regional networks, and the Advanced National Seismic System (ANSS), in addition to providing near
 real-time information and monitoring to the greater San Diego community.  Twelve high dynamic range
broadband and strong motion sensors adjacent to the San Jacinto Fault zone contribute data for earthquake
source studies and continue the monitoring of the seismic activity of the San Jacinto fault initiated 24 years ago.
Five additional stations are located in the San Diego region with one more station on San Clemente Island.
The ANZA network uses the advance wireless networking capabilities of the NSF High Performance Wireless
Research and Education Network (http:hpwren.ucsd.edu) to provide the communication infrastructure for the
real-time telemetry of Anza seismic stations.  The ANZA network uses the Antelope data acquisition software.
The combination of high quality hardware, communications, and software allow for an annual network uptime in
excess of 99.5% with a median annual station real-time data return rate of 99.3%.  Approximately 90,000 events,
dominantly local sources but including regional and teleseismic events, comprise the ANZA network waveform
database.  All waveform data and event data are managed using the Datascope relational database.
The ANZA network data has been used in a variety of scientific research including detailed structure of the San
Jacinto Fault Zone, earthquake source physics, spatial and temporal studies of aftershocks, array studies of
teleseismic body waves, and array studies on the source of microseisms.  To augment the location, detection,
and high frequency observations of the seismic source spectrum from local earthquakes, the ANZA network is
receiving real-time data from borehole arrays located at the UCSD Thornton Hospital, and from UCSB's Borrego
Valley and Garner Valley Downhole Arrays.  Finally the ANZA network is acquiring data from seven PBO sites each
 with 300 meter deep MEMs accelerometers, passive seismometers, and a borehole strainmeter.

Paper Number: S33C-05
Presentation Type - Oral Presentation

Presentation Date: Wednesday, 23 May
Starting Time: 15:00