An analysis of the in-situ resistivity of sea ice in terms of its microstructure

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TypeArticle
Journal titleJournal of Glaciology
Volume22
Issue88
Pages461471; # of pages: 11
AbstractThe results of 66 Schlumberger geoelectric soundings on first-year sea ice are analysed to obtain average values of d.c. electrical resistivity both parallel PI and perpendicular Pp to the long brine cell direction. This analysis yields PI = 104 Ω m, 80 n m, 45 Ω m, and Pp = 2g8 Ω m, 230 Ω m, 129 Ω m for brine volumes Vb of 40%º/₀₀' 67%º/₀₀' and 82%º/₀₀' respectively. The observed dependence of pI o n Vb is used in conjunction with a mixing formula for the electrical resistivity of a two-phase heterogeneous system to arrive at values of "average" brine cell lengths l for relatively warm sea ice. This treatment yields I ≈ l. 7 cm for 40%º/₀₀' ≼ Vb ≼ 70%º/₀₀' with a rapid extension of brine cell lengths for brine volumes above c. 70%º/₀₀'.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Centre for Surface Transportation Technology
Peer reviewedNo
NPARC number12337968
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Record identifier1539404a-dcc0-44d8-aa62-8b825607ba49
Record created2009-09-10
Record modified2016-05-09
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