The DC resistivity structure of an artificially grown saline ice sheet at various stages of growth, thermal modification, and desalination has been determined by finding layered models to best fit Schlumberger array sounding data. Values between 2 and 90 Omega -m were obtained for model layers from 2% to 200% brine volume. After a strong warming and cooling cycle following 32-cm growth, the average resistivity has decreased by a factor of 2 despite the brine volume having also decreased by the same factor. This change with age plus the variability in the resistivity values implies that no simple correlation exists between brine volume and resistivity because permeability, which is related to age and temperature, is also a strong factor. The low resistivity values measured show that resistivity will strongly affect microwave radiometric emissions from young or warm sea ice.
DC resistivity measurements of model saline ice sheets
Widerstandsmessungen von kuenstlich gewachsenen salzhaltigen Eisflaechen
IEEE Transactions on Geoscience and Remote Sensing ; GE-25 , 6 ; 845-849
1987
5 Seiten, 16 Quellen
Aufsatz (Zeitschrift)
Englisch
Electrical Resistivity Behavior of Saline Soil under Low-Temperature Conditions
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