DC resistivity measurements on the sea ice near Pond Inlet, N.W.T. (Baffin Island)

From National Research Council Canada

DOI	Resolve DOI: https://doi.org/10.2312/polarforschung.44.2.117
Author	Search for: Thyssen, F.; Search for: Kohnen, H.; Search for: Cowan, M. W.; Search for: Timco, G. W.
Format	Text, Article
Abstract	Extensive dc-resistivity measurements were carried out in May and June 1972 near Pond Inlet, N. W. T. to determine the resistivity and the anisotropy of the sea ice. The sea ice proved to be transversely isotropic with regard to dc currents. The coefficient of anisotropy of undistrubed ice is approximately λ = 0,26. λ increased up to 1 in heavily disturbed parts of the ice cover. Ice thicknesses, determined from the dc-soundings without taking into account anisotropy, were too small compared with the true thicknesses determined from drilling. The average resistivity of the sea ice decreased significantly during the observation period according to the increase of the brine volume. The conductivity of the ice is controlled by this brine content since the ice matrix has an extremly low conductivity. The relation between the resistivity and the brine volume is compared with a model of conductivity in porous media.
Publication date	1974
In	Polarforschung 44, no. 2: 117–126.
Language	English
Peer reviewed	Yes
NRC publication	This is a non-NRC publication "Non-NRC publications" are publications authored by NRC employees prior to their employment by NRC.
NPARC number	12328245
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Record identifier	65aa51de-d2c1-4db4-98c4-fc4a08f5f8c1
Record created	2009-09-10
Record modified	2020-03-13

Date modified:: 2024-04-26