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Summary Information for Field Activity 2011-039-FA

Area of Operations: Arctic Ocean

Dates: August 18, 2011 to September 29, 2011

Chief scientist: Deborah Hutchinson

   David Mosher GSC Chief Scientist

Objectives: To determine the extent of the Extended Continental Shelf in the Arctic Ocean collaboratively with Canada.

Type of Activity: Sea floor mapping;Arctic Ocean

Information to be derived: sediment thickness maps, geology of the Canada Basin

Summary: The 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 thickness, 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 multibeam bathymetric data were acquired from the USCGC Healy.

Contact: Deborah Hutchinson (dhutchinson@usgs.gov)

Related Links: http://www.continentalshelf.gov

Platform Info:
LOUIS S ST LAURENT

Publications resulting from these data

Mosher, D.C., Shimeld, J. Hutchinson, D., Jackson, R., Chian, D., Lebedeva-Ivanova, N., Oakey, G., Evangelatos, J., Li, Q., Funck, T., Mayer, L., Verhoef, J., and Forbes, S,2012, Re-evaluating Amerasian Basin tectonics and sedimentation with new geophysical data: 34th IGC Conference

Mosher, D.C., Shimeld, J., Hutchinson, D., Chian, D., Lebedeva-Ivanova, N., and Jackson, R.,2012, Canada Basin Revealed: Arctic Technology Conference

Lebedeva-Ivanova, N., Hutchinson, D.R., Shimeld, J., Brumley, K., Chian, D., Hart, P., Mosher, D., and Jackson, R.,, Inferred Mesozoic Origin of the Nautilus Basin, Arctic Ocean [abs.]: 3P Arctic The Polar Petroleum Potential Conference and Exhibition

Hutchinson, D., Houseknecht, D., Mosher,D., Hart,P., Jackson, R., Lebedeva-Ivanova,N., Shimeld, J., and Chian, D.,, The Chukchi Borderland: a sediment-starved rifted continental margin [abs.]: 2013 Fall AGU Meeting

Data Types and Locations:

BathymetryGeophysicsSeismics

 

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