Canadian Seismograph Network Update

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Canadian SeismographNetwork Update

• Jim Lyons
• National Earthquake Hazards Program
• Geological Survey of Canada

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Overview

• Canadian National Seismograph Network (CNSN)
  Changes from 2000 - 2002
• CHASME deployment
• POLARIS (code PO) network

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Glossary of Terms
ESP 3-c (ZNE), 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
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CNSN Station Map 2002
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Queen Charlotte Islands

• RUB Prince Rupert, BC moved to RUBB, upgraded
  from dialup EHZ to BB

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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

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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 lt 50
  m, YKW1 1.75 km, YKW2 1.0 km
• NEIC, IDC, IRIS DMC informed

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Charlevoix
A11, A16, A21, A54, A61, A64 upgraded from ESP to
HBB in Sept 2001
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Other Changes

• GGN St. George, NB (former ECTN SPZ) re-installed
  as a CNSN BB
• VLDQ Val dOr, 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

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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
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CHASME

• Canadian High Arctic Seismic Monitoring
  Experiment

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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

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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

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POLARIS Network
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POLARIS Ontario Network
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POLARIS NWT Network
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POLARIS Western Network
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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)

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The End