##

Pacific Geoscience Centre

Date: March 9, 1998

### Location, Contact, and Address:

The Canadian National Seismic Network, western Canada:

Earthworm Contact:

### Network Characteristics

Information listed below includes both the core national network and additional western stations

- ~30 broadband stations across the country, sampled at 40s/s (~90 channels)
- ~35 short-period stations in western Canada, sampled at 100s/s (~35 channels)
- All stations employ continuous, packetised digital telemetry with GPS timing at the outstation
- broadband stations use CMG-3ESP, CMG-3T or STS-1VBB seismometers
- short-period stations use S-13 seismometers
- 24+ bit digitizers for both broadband and short-period stations (developed in-house)

###

Standard Earthworm Modules in current use

Earthworm (v3.0) is in the process of being installed on a Pentium II system under NT4.0

###

Earthworm Modules under development

modules to receive packetised CNSN data and output ew trace_buf packets are under development - later versions to handle two-way dialog with outstation and requests for retransmission of data

### Needs

- Continued improvement of documentation
- Easy data exchange with neighboring networks (Washington and Alaska)

Return to main Earthworm or Sites pages.