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Title2011 Canadian High Arctic Seismic Expedition: CCGS Louis S. St-Laurent expedition report
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorMosher, D CORCID logo
SourceGeological Survey of Canada, Open File 7053, 2012, 290 pages, Open Access logo Open Access
LinksExpedition Database - Base de données d'expédition
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
RelatedThis publication is contained in Canadian UNCLOS extended continental shelf program seismic data holdings (2006-2011)
RelatedThis publication contains the following publications
File formatpdf
ProvinceNorthern offshore region
AreaArctic Ocean
Lat/Long WENS-165.0000 -117.0000 88.0000 69.0000
Subjectsmarine geology; geophysics; geophysical surveys; seismic interpretations; seismic surveys; seismic reflection surveys; seismic surveys, marine; seismic refraction surveys; continental margins; bathymetry; gravity surveys; gravity interpretations; oceanography; oceanographic surveys; seafloor topography; ice conditions; ice thickness; salinity; sea ice; water temperature; water circulation patterns; water analyses; salt water; equipment testing
Illustrationslocation maps; tables; photographs; profiles; digital elevation models; satellite images; graphs; screen captures
ProgramDelineating Canada's Continental Shelf Under UNCLOS
Released2012 04 19
AbstractThe principal objectives of the 2011 Canadian High Arctic Seismic Expedition were to acquire multichannel seismic reflection, refraction and bathymetric data along positions that serve to establish sediment thicknesses, structural and morphologic criteria along Canadian and US western Arctic continental margins. Strategic ship track lines were established to complement existing data to meet UNCLOS Extended Continental Shelf (ECS) sediment thickness, bathymetric and scientific objectives. In addition, the first Autonomous Underwater Vehicle deployment from an icebreaker in the high Arctic was achieved, permitting acquisition of additional bathymetric data in areas of perennial sea ice cover. Ancillary programs included ice observations to groundtruth remotely sensed data, physical oceanographic data were acquired on an opportunistic basis and an Environment Canada O-buoy was deployed. 1437 line-km of high quality multichannel seismic reflection data were acquired in addition to seismic refraction data recorded from 21 sonobuoy deployments. 7848 line-km of single beam bathymetry, subbottom profiler and shipborne gravity data were obtained from the Louis S. St-Laurent over the course of the entire mission, plus 75 helicopter spot soundings. 110 km of bathymetric data were acquired by the AUV and in excess of 4500 line-km of mulitbeam bathymetric data were acquired from the USCGC Healy.
Summary(Plain Language Summary, not published)
The Geological Survey of Canada acquired more than 26,000 line-km of multi-channel seismic reflection data in support of extended continental shelf mapping in the western Arctic Ocean, the Labrador Sea and the Scotian margin. In the Arctic, these data were acquired jointly with the United States extended continental shelf program. This open file represents a release of these data in high resolution image format.

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