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TitleReport of Cruise 2010005PGC, C.C.G. Vessel John P. Tully, 22 September - 2 October 2010, SeaJade-I Seafloor Earthquake Array Japan-Canada Cascadia Experiment, ocean bottom seismometer deployment and active-source airgun refraction and reflection program
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorSpence, G D; Riedel, M
SourceGeological Survey of Canada, Open File 7558, 2014, 50 pages, Open Access logo Open Access
PublisherNatural Resources Canada
Documentopen file
Mediadigital; on-line
RelatedThis publication is related to the following publications
File formatpdf
ProvinceWestern offshore region
AreaPacific Ocean; Vancouver Island
Lat/Long WENS-128.5000 -126.0000 49.3333 48.0000
Subjectsgeophysics; geophysical surveys; earthquakes; earthquake studies; earthquake magnitudes; epicentres; aftershocks; seismic interpretations; seismicity; seismographs; seismological network; seismology; seismic waves; gas; gas bubbles; acoustic surveys; acoustic surveys, marine; water analyses
Illustrationslocation maps; tables; photographs; profiles; logs
ProgramPublic Safety Geoscience Western Canada Geohazards Project
Released2014 12 05
Summary(Plain Language Summary, not published)
This Geological Survey of Canada Open File summarizes the activities undertaken during the deployment phase of the SeaJade expedition (Seafloor Earthquake Array Japan Cascadia Experiment). The main objective of this work is to acquire passive seismic data for earthquake studies. The Japan Agency for Marine-Earth Science and Technology (JAMSTEC) provided 35 Ocean Bottom Seismometers (OBS), which were deployed to monitor earthquake activity offshore Vancouver Is. The OBS monitoring will, for the first time, provide information on seismic activity beneath the continental slope and further offshore. This information cannot be provided by land-based seismic networks and therefore will fill a critical knowledge gap essential to the assessment of earthquake hazard due to the Cascadia subduction fault. The second research objective involves an active seismic program to acquire active-source seismic data across a frontal ridge for submarine slide studies and linkages to gas hydrate occurrences.

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