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Title2009 Canada Basin seismic reflection and refraction survey, western Arctic Ocean: 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; Shimeld, J W; Hutchinson, D R
SourceGeological Survey of Canada, Open File 6343, 2009, 235 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)
File formatpdf
ProvinceNorthern offshore region
AreaArctic Ocean
Lat/Long WENS-160.0000 -114.0000 84.3333 68.0000
Subjectsmarine geology; geophysics; geophysical surveys; seismic interpretations; seismic surveys; seismic reflection surveys; seismic surveys, marine; seismic refraction surveys; continental margins; bathymetry
Illustrationslocation maps; tables; photographs; profiles
Released2009 11 25
AbstractThe 2009 Canadian Polar Margin Seismic Reflection and Refraction Survey was a tremendous success, in large part due to the experience and innovation of its technical staff. The principal objective was to acquire multichannel seismic reflection and refraction data along positions that serve to establish sediment thicknesses along Canadian and US western Arctic continental margins. Secondary objectives included bathymetric sounding at specific locations along this margin to validate bathymetric data acquired by other means (e.g. satellite altimetry) in order to establish baseline information such as the 2500 m contour position. Strategic ship track lines were established to complement existing data to meet UNCLOS and scientific objectives. In addition to the geoscience program, samples and measurements were taken of Arctic Ocean water for chemical and physical oceanographic studies. Seismic system calibration experiments were also conducted to quantify sound signal intensity levels produced by the seismic system. 4069 line-km of high quality multichannel seismic reflection data were acquired, in addition to seismic refraction data recorded from 51 sonobuoys deployments. 8355 line-km of single beam bathymetry were achieved, in addition to 177 helicopter spot soundings. The physical/chemical oceanographic portion of the program resulted in 7 rosette water sample stations seven CTD/SVP casts and 72 XCTD casts.
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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