Characterizing Deformed Multi-Year Ice in the Beaufort Sea

The National Research Council (NRC) will lead the project, which will use deep-core drilling to measure the thickness, temperature, salinity, and strength of multi-year sea ice. The fine scale characterization of multi-year sea ice will complement two related projects. These include data collection using aircraft-based electromagnetic induction (EMI) surveys, led by the University of Alberta (see Polar Data Catalogue metadata record with CCIN Ref. No. 11470), Inuit-led snowmobile EMI surveys, and on-ice location and profiling equipment, led by University of Manitoba. The integrated project will enable the validation and better interpretation of sea ice information at all scales and enhance the use of satellite imagery to characterize sea ice features. A relatively lightweight drill frame has been designed and fabricated to assist with borehole strength measurements in ice thicker than 6 m and to assist with drill hole measurements in ice more than 20 m thick. A new, customized borehole indentor system has been designed and fabricated to allow strength measurements to be conducted to a depth of 12 m. Thickness, temperature, salinity, and strength measurements of several hummocked multi-years floes were acquired and analyzed. Ice cores were extracted from boreholes to document the temperature and salinity of the ice to a maximum depth of 12 m. In situ strength tests were conducted in both boreholes at depth intervals of 30 cm. Ice thicknesses were measured at a total of 20 holes using drill hole and steam hole techniques.

Metadata Access
Creator Michelle Johnston
Publisher Canadian Cryospheric Information Network
Contributor Aboriginal Affairs and Northern Development Canada
Publication Year 2014
Rights Limited
Language English
Discipline Environmental Research
Spatial Coverage (72N-76N,131W-97W)
Temporal Coverage Begin 2012-05-10T11:59:59Z
Temporal Coverage End 2013-03-28T11:59:59Z