Author： Festa Crescenzo Rossi Aristide
Publisher： International Glaciological Society
ISSN： 1727-5644
Source： Annals of Glaciology, Vol.29, Iss.1, 1999-06, pp. : 151-154
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Abstract
An apparatus is described for measuring the thermal conductivity of ice by the transient hot-wire method. Thermal conductivity, λ, is determined by tracking the thermal pulse induced in the sample by a heating source consisting of a platinum resistor. A central segment of the same platinum heating resistor acts also as a thermal sensor. A heat pulse transferred to the ice for a period of 40 s gives a maximum temperature increment of about 7–14°C. In good experimental conditions, the expected reproducibility of the measurements is within ±3%. The accuracy of the method depends on whether the instrument has been calibrated by reliable standard samples, certified by absolute methods.
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