National WaveForm Archive (NWFA)

The National WaveForm Archive (NWFA) is the national repository for all digital seismic, hydroacoustic, and infrasonic waveform data generated by the GSC and other co-operating agencies.

The Archive contains:

1. Event-related waveforms captured by regional telemetered seismic networks in Eastern and Western Canada (ECTN/WCTN) and local telemetered networks located in Charlevoix, Quebec (CLTN) and Sudbury, Ontario (SLTN) from 1975 to 1995.
2. Digitized events from the Yellowknife Seismic Array (YKA) since 1976
3. Continuous data from the Yellowknife Array (YKA) since August 1989
4. Continuous data from the CNSN since its inception in 1992
5. Quasi-continuous data from various special deployments
6. Continuous data from the POLARIS network since 2002
7. Numerical acceleration data from Strong Motion deployments in Miramichi, NB 1982; Nahanni, NT 1985-86; and Saguenay, QU 1988

Data is freely available from the deployments listed above, subject to the GSC's END-USER AGREEMENT FOR DIGITAL DATA.

• Policy for distribution of CNSN waveform data
• Contact us to obtain NWFA data, and for best practices in citing CNSN data