Station: Pemberton Meadow, British Colombia, Canada (PMB)
Operator: Unmanned station Address: Geological Survey of Canada
1 Observatory Crescent Ottawa, ON, Canada K1A 0Y3 Telephone: 613-995-4669 Fax: 613-992-8836 Email: munro@seismo.nrcan.gc.ca (Philip Munro) Open Station: No Parent Organization: Geological Survey of Canada Network Affiliation: Canadian National Seismograph Network (CNSN) Network Contact: Bill Shannon 613-995-5584 shannon@seismo.nrcan.gc.ca Coordinates: Latitude: 50.5190 Longitude: -123.0760 Elevation to Sensor: 400. Depth to Sensor: 0. Geology: PMB is located in a mixed terrane of metavolcanic and granitic rocks in the Coast Belt of the Cordillera. Vault Conditions: Reinforced concrete instrument pier rock-bolted to surface exposure of bedrock; insulated fibreglass side walls and lid; no backfilling. Site Description: PMB is located in the Coast Mountains seismic zone (approximately 100 seismic events in 1993) which encloses the Northern Vancouver Island seismic zone (approximately 70 events in 1993). Approximately 150 km to the west is the very active Juan de Fuca-Explorer zone, characterised by a series of spreading centres and by seismicity associated with transform faults. STATION INSTRUMENTATION 1. Canadian National Seismograph Network - [ CN ] Dates of Operation: 05 June 1993 to present Seismometer Type: Guralp CMG-3ESP Digital Format: SEED (IRIS); SEED, GSEV2.X, MK2, CA (CNSDC) Event Detection: Continuous data are archived onto 12" SONY optical disk platters; the CNSN 4-band frequency domain event detector creates a list of "refined detections" for further post-processing, including automatic locations. Channel Data: All three components sampled at 15,000 samples/sec; data decimated to 40 samples/sec using 3 cascaded low-pass FIR filters with a final -3dB point at 18.3 Hz and -140dB at > 20 Hz. Channel Sampling Rate Sensitivities BHZ 40 sps continuous 5.00000e+09 c/m/s BHN 40 sps continuous 5.00000e+09 c/m/s BHE 40 sps continuous 5.00000e+09 c/m/s Amplitude Response: (ground velocity in radians/sec) Zeroes: (0.0, 0.0) (0.0, 0.0) Poles: (-0.031416, 0.0) (-0.209440, 0.0) (-222.1106, -222.1778) (-222.1106, +222.1778) Constant: 9.86960E+04 times channel sensitivity Comments: ------------------------------------------------------------------------------------------- Station: Lillooet, British Columbia, Canada (LLLB) Operator: Unmanned station Address: Geological Survey of Canada Pacific Geoscience Centre P.O. Box 6000 9860 West Saanich Road Sidney, BC, Canada V8L 4B2 Telephone: 250-363-6454 Fax: 250-363-6739 Email: beverley@pgc.nrcan.gc.ca (Ken Beverley) Open Station: No Parent Organization: Geological Survey of Canada Network Affiliation: Canadian National Seismograph Network (CNSN) Network Contact: Richard Baldwin 250-363-6740 baldwin@pgc.nrcan.gc.ca Coordinates: Latitude: 50.6090 Longitude: -121.8815 Elevation to Sensor: 700. Depth to Sensor: 0. Geology: LLLB Vault Conditions: Reinforced concrete instrument pier rock-bolted to surface exposure of bedrock; insulated fibreglass side walls and lid; no backfilling. Site Description: LLLB is located in the Coast Mountains seismic zone (approximately 100 seismic events in 1993) which encloses the Northern Vancouver Island seismic zone (approximately 70 events in 1993). Approximately 200 km to the west is the very active Juan de Fuca-Explorer zone, characterised by a series of spreading centres and by seismicity associated with transform faults. STATION INSTRUMENTATION 1. Canadian National Seismograph Network - [ CN ] Dates of Operation: 05 November 1998 to present Seismometer Type: Guralp CMG-3T Digital Format: SEED (IRIS); SEED, GSEV2.X, MK2, CA (CNSDC) Event Detection: Continuous data are archived onto 35 Gbyte DLT IV tapes and CD-ROMs; the CNSN 4-band frequency domain event detector creates a list of "refined detections" for further post-processing, including automatic locations. Channel Data: All three components sampled at 15,000 samples/sec; data decimated to 40 samples/sec using 3 cascaded low-pass FIR filters with a final -3dB point at 18.3 Hz and -140dB at > 20 Hz. Channel Sampling Rate Sensitivities BHZ 40 sps continuous 5.00000e+09 c/m/s BHN 40 sps continuous 5.00000e+09 c/m/s BHE 40 sps continuous 5.00000e+09 c/m/s Amplitude Response: (ground velocity in radians/sec) XXXXXXX Phil pls check Zeroes: (0.0, 0.0) (0.0, 0.0) Poles: (-0.031416, 0.0) (-0.209440, 0.0) (-222.1106, -222.1778) (-222.1106, +222.1778) Constant: 9.87524E+04 times channel sensitivity Comments: