canadian seismograph network update jim lyons national earthquake hazards program geological survey...
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Canadian SeismographNetwork Update
Jim Lyons
National Earthquake Hazards Program
Geological Survey of Canada
Natural Resources CanadaNational Earthquake Hazards Program
Overview
• Canadian National Seismograph Network (CNSN): Changes from 2000 - 2002
• CHASME deployment
• POLARIS (code =‘PO’) network
Natural Resources CanadaNational Earthquake Hazards Program
Glossary of Terms
ESP 3-c (Z|N|E), 100 sps, S-13 seismo
EHZ 1-c (Z), 100 sps, S-13 seismo
SPZ 1-c (Z), 60 sps, S-13 seismo
BB 3-c, 40 sps, Guralp seismo
HBB 3-c, 100 sps, Guralp seismo
VBB 3-c, 40/20 sps, STS-1 seismo
Natural Resources CanadaNational Earthquake Hazards Program
CNSN Station Map 2002
Natural Resources CanadaNational Earthquake Hazards Program
Queen Charlotte Islands
• RUB Prince Rupert, BC moved to RUBB, upgraded from dialup EHZ to BB
Natural Resources CanadaNational Earthquake Hazards Program
Southwestern British Columbia
•HNB Haney, LZB Mt. Lazard, PFB Port Renfrew, SHB Sechelt, SNB Saturna Island, have all been upgraded from EHZ to BB
•New BB station installed at HOPB Hope
Natural Resources CanadaNational Earthquake Hazards Program
Yellowknife Array
• new BB station “YKW5” co-located with VBB YKW1 in November 2001
• Re-survey for IMS certification showed many YKA sites had wrong * coordinates; most off by < 50 m, YKW1 1.75 km, YKW2 1.0 km
• NEIC, IDC, IRIS DMC informed
Natural Resources CanadaNational Earthquake Hazards Program
Charlevoix
A11, A16, A21, A54, A61, A64 upgraded from ESP to HBB in Sept 2001
Natural Resources CanadaNational Earthquake Hazards Program
Other Changes
•GGN St. George, NB (former ECTN SPZ) re-installed as a CNSN BB
•VLDQ Val d’Or, PQ (40 km east of original ECTN VDQ) installed as a CNSN BB
•MNT Montreal, PQ, upgraded from EHZ to BB
•FNBC Fort Nelson, BC has moved approximately 25 km west; renamed to FNBB
•FSJ Fort St. James, BC was moved 3.5 km WNW and is now FSB
•GTO Geraldton, ON upgraded from regional analogue to EHZ
Natural Resources CanadaNational Earthquake Hazards Program
CNSN Summary
Total CNSN and regional
2000 – 121 May 2002 – 124
+12 BB, -6 SP,
-3 Analogue
+ 20 more temporary sites for CHASME and POLARIS experiments
Natural Resources CanadaNational Earthquake Hazards Program
CHASME
Canadian High Arctic Seismic Monitoring Experiment
Natural Resources CanadaNational Earthquake Hazards Program
Natural Resources CanadaNational Earthquake Hazards Program
Natural Resources CanadaNational Earthquake Hazards Program
POLARIS
Portable Observatories for Lithospheric Analysis and Research
Investigating Seismicity
• a Canadian geophysical research consortium focused on investigation of the structure and dynamics of the Earth's lithosphere and the prediction of earthquake ground motion
Natural Resources CanadaNational Earthquake Hazards Program
POLARIS
• Will comprise 90 HBB seismographs in 3 sub-arrays
• Employ Nanometrics digitizers, VSAT telemetry, and acquisition systems for continuous real-time processing
• Deployments to last 4-5 years• Will eventually include MT systems
Natural Resources CanadaNational Earthquake Hazards Program
POLARIS Network
Natural Resources CanadaNational Earthquake Hazards Program
POLARIS – Ontario Network
Natural Resources CanadaNational Earthquake Hazards Program
POLARIS – NWT Network
Natural Resources CanadaNational Earthquake Hazards Program
POLARIS – Western Network
Natural Resources CanadaNational Earthquake Hazards Program
NEHP Role
• Archive continuous real-time POLARIS waveform data
• Make data available via AutoDRM and real-time Internet feeds
• By fall 2002, house and operate a second Nanometrics Inc. VSAT hub (earthstation downlink)
Natural Resources CanadaNational Earthquake Hazards Program
The End