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NEPTUNE Canada Seismograph Network (a progress report - April 2009) Garry Rogers 1,2, Bob Meldrum 1, Taimi Mulder 1, Richard Baldwin 1 & Andreas Rosenberger.

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Presentation on theme: "NEPTUNE Canada Seismograph Network (a progress report - April 2009) Garry Rogers 1,2, Bob Meldrum 1, Taimi Mulder 1, Richard Baldwin 1 & Andreas Rosenberger."— Presentation transcript:

1 NEPTUNE Canada Seismograph Network (a progress report - April 2009) Garry Rogers 1,2, Bob Meldrum 1, Taimi Mulder 1, Richard Baldwin 1 & Andreas Rosenberger 1 Camille Brillon 2 1 Geological Survey of Canada, 2 University of Victoria

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3 NEPTUNE Canada Broadband Seismic Observatory (3) Guralp Systems successful bidder Broadband seismometer Strong motion accelerometer Spherical titanium case Buried beneath the sea floor Nearby differential pressure gauge, current meter and hydrophone ( for 2010) Backup battery for power outages (for 2010)

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15 Current recording and archiving of broadband seismic data Data received and distributed by an ANTELOPE system behind military firewallData received and distributed by an ANTELOPE system behind military firewall Data is being archived temporarily at PGCData is being archived temporarily at PGC Seismometer masses not yet centred and instruments not yet calibrated (soon).Seismometer masses not yet centred and instruments not yet calibrated (soon). Hi frequency data flow is subject to military screening (~14% diverted since December)Hi frequency data flow is subject to military screening (~14% diverted since December) Military diversion for testing Sep - NovMilitary diversion for testing Sep - Nov

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17 th NEPTUNE Canada Broadband Seismic Observatory Partnership: University of Washington, IRIS, GSC, (USGS), NEPTUNE Canada. Guralp Systems will refurbish UW OBS to be identical to NEPTUNE Canada design Occupy same vault as UW installation

18 NEPTUNE Canada Short Period Ob (4) GEOSENSE feedback seismometer (1hz) on long term loan from MBARIGEOSENSE feedback seismometer (1hz) on long term loan from MBARI Same Guralp digitizerSame Guralp digitizer Battery backupBattery backup Deployed in corehole in basalt or in concrete monument on sediment.Deployed in corehole in basalt or in concrete monument on sediment.

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22 NEPTUNE Canada and the Military Low frequency data from broadband instruments will flow all the timeLow frequency data from broadband instruments will flow all the time High frequency seismic data from all seismometers may be embargoed at certain times (0.8Hz)High frequency seismic data from all seismometers may be embargoed at certain times (0.8Hz) Tests were conducted after deployment to determine embargo criteria (Sep.-Nov.)Tests were conducted after deployment to determine embargo criteria (Sep.-Nov.) Once set up, automatically picked phases and hypocenters from ridge events will flow all the timeOnce set up, automatically picked phases and hypocenters from ridge events will flow all the time

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24 Data flow from NEPTUNE Canada seismographs (2010) Once calibrated, seismic data will be archived at IRIS the Geological Survey of Canada. Associated data: hydrophone, current meter, pressure gauge will be archived at NEPTUNE Canada. Automatic earthquake solutions from the ridge will be sent in real time to NEPTUNE Canada and the Geological Survey of Canada. Automatic earthquake solutions from the ridge will be sent in real time to NEPTUNE Canada and the Geological Survey of Canada.


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