Journal article Open Access
An Analysis of the In-Situ Resistivity of Sea Ice in Terms of its Microstructure
G. W. Timco
AbstractThe results of 66 Schlumberger geoelectric soundings on first-year sea ice are analysed to obtain average values of d.c. electrical resistivity both parallelρ1 and perpendicularρpto the long brine cell direction. This analysis yieldsρ1 = 104 Ω m, 80 Ω m, 45 Ω m, andρp= 298 Ω m, 230 Ω m, 129 Ω m for brine volumesνbof 40‰, 67‰, and 82‰ respectively. The observed dependence ofρ1 onνbis 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 lengthslfor relatively warm sea ice. This treatment yieldsl≈ 1.7 cm for 40‰≤νb≤70‰ with a rapid extension of brine cell lengths for brine volumes abovec. 70‰.
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- Publication date:
- January 1, 1979
- DOI:
-
- Keyword(s):
- NEANIAS Atmospheric Research Community Earth-Surface Processes
- Communities:
- License (for files):
- Other (Open)