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Titre2014 Canadian Expedition to the North Pole, Arctic Ocean, expedition report
TéléchargerTéléchargements
AuteurMosher, D C; Shimeld, J; Travaglini, P; Eert, J
SourceCommission géologique du Canada, Dossier public 8493, 2018, 123 pages, https://doi.org/10.4095/313021 (Accès ouvert)
Année2018
ÉditeurRessources naturelles Canada
Documentdossier public
Lang.anglais
DOIhttps://doi.org/10.4095/313021
Mediaen ligne; numérique
Formatspdf
ProvinceRégion extracotière du nord; Nunavut; Territoires du Nord-Ouest; Yukon; Région extracotière de l'est; Terre-Neuve-et-Labrador
SNRC1; 77; 79; 87; 89; 97; 98; 99; 107; 117; 120; 340; 560
Lat/Long OENS 110.0000 -130.0000 90.0000 68.0000
Lat/Long OENS -53.0000 5.0000 82.0000 47.0000
Lat/Long OENS-128.0000 -110.0000 72.0000 68.0000
Sujetsexpéditions dans l'arctique; marges continentales; plate-forme continentale; talus continental; levés géophysiques; levés sismiques marins; levés de reflexion sismiques; levés de refraction sismiques; levés acoustiques marins; sonar latéral; bathymétrie; sédiments marins; interprétations tectoniques; structures sédimentaires; milieux sédimentaires; océanographie; analyses de l'eau; hydrographie; caractéristiques sous-marines; dorsales sous-marines; plateaux sous-marins; chenaux; télédétection; imagerie par satellite; glace marine; météorologie; temperature; Bassin d'Amundsen ; Bassin de Canada ; Bassin d'Arctic ; géologie marine; géologie des dépôts meubles/géomorphologie; géophysique; tectonique
Illustrationsphotographs; geoscientific sketch maps; schematic diagrams; tables; location maps; seismic profiles; geophysical profiles; geophysical images; satellite images; flow diagrams; profiles; graphs; spectra; screen captures
ProgrammePreparation of a submission for an extended continental shelf in the Atlantic and Arctic Oceans under UNCLOS, Délimitation du plateau continental du Canada en vertu de la Convention des Nations Unies sur le droit de la mer (UNCLOS)
Diffusé2018 11 19
Résumé(Sommaire disponible en anglais seulement)
The 2014 Canadian Polar Expedition objectives were to map the region of the Lomonosov Ridge and Amundsen Basin to meet criteria required by Article 76 of the UN Convention on the Law of the Sea. The intent is to establish Canadian entitlement for an extended continental shelf, extending from the Canadian 200 mile exclusive economic zone within Amundsen Basin. Additional objectives included continued mapping in Canada Basin to augment existing data and support Canada's arguments for an extended continental shelf in this region. The UNCLOS objectives require the capacity to acquire multichannel seismic reflection and refraction data along positions that serve to establish sediment thicknesses (within Amundsen Basin and Canada Basin) and multibeam bathymetric and subbottom profiler data to establish foot of slope positions and the 2500 m contour (along the flank of Lomonosov Ridge and the Canadian Arctic Archipelago margin). Secondary objectives included bathymetric sounding at specific locations to validate bathymetric data acquired by other means (e.g. satellite altimetry and submarines) in order to establish baseline information such as the 2500 m contour position. Scientific objectives included gathering data to understand the tectonic relationship of Lomonosov Ridge to surrounding basins; part of the tectonic puzzle of the Arctic Basin. Additionally, data were acquired to support mapping the surficial geology of the Arctic Ocean and specifically to better understand slope sedimentary processes on both Lomonosov Ridge and the Canadian Arctic Archipelago margin. 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. The complete ship's track is shown in the figure below.
Ice conditions in the region of Lomonosov Ridge were difficult. As a result, only one partial seismic line was acquired in Amundsen Basin and three foot of the continental slope points were surveyed in the region of the North Pole. Low fuel reserves required us to abandon this region prematurely and transit to Canada Basin to continue survey work in support of the western Arctic component of the Canadian submission. In total, 746 line-km of high quality multichannel seismic reflection data were acquired, in addition to seismic refraction data recorded from 13 Sonobuoy deployments. 8355 line-km of multibeam bathymetric and coincident subbottom profiler data were acquired. The physical/ chemical oceanographic portion of the program resulted in 2 Rosette water sample stations, 2 CTD/SVP casts and 127 XCTD casts.
Résumé(Résumé en langage clair et simple, non publié)
Les objectifs de l'Expédition Polaire Canadienne en 2014 étaient de cartographier la géologie du fond marin afin de répondre aux critères requis par la Convention des Nations Unies sur le Droit de la Mer pour que le Canada établisse ses limites maritimes extérieures dans l'océan Arctique.
GEOSCAN ID313021