Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9521793 | Cold Regions Science and Technology | 2005 | 7 Pages |
Abstract
Electrical potentials developed by charge separation during freezing of water and dilute CaCl2 solutions were studied in the laboratory, using gold-plated copper electrodes placed across the freezing boundary. A sudden increase in the potential occurs when the freezing front reaches an electrode. A shorting potential was observed at the electrodes when the freezing front advanced past the reference electrode. The magnitude of the freezing and shorting potentials is of the order of a few hundred millivolts. This technique can be used to detect and monitor the movement of freeze-thaw boundaries in water and moist soils.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Earth and Planetary Sciences (General)
Authors
V.R. (Sivan) Parameswaran, C.R. Burn, Aileen Profir, Quang Ngo,