University of Washington
Location, Contact, and Address:
Pacific Northwest Seismograph Network recording at Geophysics Program
of the University of Washington
Steve Malone (steve@geophys.washington.edu) 206-685-3811
Box 351650, Univ. of Washington, Seattle, WA
Network Characteristics:
~130 Analog stations, 12 broad-band, 7 strong-motion covering Washington
& western Oregon
Analog data are digitized by an Analyix S-Bus A/D on a SUN Sparc-5
computer
1- Reftek continuous telemetry & 4 dial-up Reftek data-loggers
7- Terra Tech IDS-24 continuous telemetry,(using Reftek data format)
4- channels of waveform data imported from Northern California Network.
Standard EarthWorm Modules in current Use:
EARTHWORM code (v3.1) running on an SUN Ultra-1-170 under Solaris-2.6
getting its waveform data from a
SUNWORM
system runing on a SPARC-5. There
is a block diagram showing all components of
our current system:
- pick_ew -Pick data in trace_buf ring
- binder -Carl's associator
- eqproc, eqbuf, eqcoda, eqverify, eqtee -filter, quality check,
and output pick associations-
- hypomgr, hypoinv -manage and produce standard USGS hypocenter
locations
- import_generic - Used to import four waveform channels from
Northern California in realtime.
- export_scn, export_generic - Used to export waveforms and traces
to the Alaska - Pacific Tsunami Warning Center.
- wave_serverV -wave server with 18 hour for ~120 channels
and 3 day buffer for the other ~80 channels
- startstop, copystatus, diskmgr, statmgr (control and monitor)
Associated programs/modules already developed or adapted here:
- sun_demux -Retrieves digitized analog multiplexed data by IP
socket from SPARC-5 machine running SUNWORM software, and demultiplexes
it into a wave_ring for EARTHWORM use.
- uw_report, earth_proc, spong, dopage-produce UW style pickfiles,
shell script to control hypocenter determination, and notify via e-mail
and pager.
- Ref2ew - Adapted code from Reno/Alaska to read Reftek packets
coming over leased-line modems from Terra Tech IDS-24 data loggers for
insertion of data into wave_ring. This routine reads both from serial-I/O
on a Central-Data 8-channel serial-SCSI box and also from a TCP/IP socket
from an other computer receiving telemetered Reftek data coming from a
Reftek RT-112 unit or a two-port terminal server connected to the serial
output of a Terra-IDS box.
- Earth2uw - Uses EARTHWORM wave-server client library to request
data from a wave_serverIV and create a UW2 event trace data file
for manual processing using UW analysis tools such as xped.
- Carl_trig - We modified and tested a trigger system originally
coded by Brian Moon of Battelle Northwest Labs to run the original
C. Johnson (1979) LTA/STA with subnet coincidence on EARTHWORM.
There are two programs, one to generate individual station triggers which
may be exchanged with over the network with other EARTHWORM systems,
and a subnet logic part which generates master event triggers which
are written to a transport ring or optionally generates a UW-pickfile for
use by earth2uw for waveorm extraction.
- Earth2sac - Similar to earth2uw above but writes SAC output
files.
Development Plans:
- Dial2ew - Modify our current Reftek dial-up system (SPYDER based)
to take retrieved data and insert that into wave_rings (async type input).
Nothing yet done past design concept.
- ORB server integration and evaluation - We have installed the
JSP/Datascope ORB software and are evaluating its integration with
our EARTHWORM
Our Additional Needs:
- Keep the documentation coming and up to date.
- VSAT to EARTHWORM wave_ring for NSN data
- Easy data exchange with neighboring networks to the north and east
British Columbia, Idaho and Montana)
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Sites pages.