Author(s): M. P. Langleben
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Keywords: No Keywords
Abstract: Time series measurements of sea ice temperature, made at one-hour intervals at the upper ice surface and at a depth of 25 cm, are used to determine the thermal diffusivity of sea ice by studying the vertical propagation of surface temperature transients through the ice. Theoretical propagation times, based on a solution by Carslaw and Jaeger of the one-dimensional heat diffusion equation in which thermal diffusivity is a parameter, are calculated. The calculations are repeated after making systematic changes in thermal diffusivity until the theoretical propagation time is brought into coincidence with the observed propagation time for the temperature transient. The thermal diffusivity obtained in this fashion exhibits the expected temperature dependence and compares favorably with values determined by others using different methods.
Year: 1986