canadian seismograph network update jim lyons national earthquake hazards program geological survey...

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