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Temperature Distribution in a Sub-Isothermal Glacier

Published online by Cambridge University Press:  30 January 2017

M.S. Krass*
Affiliation:
Institut Mekhaniki, Moskovskiy Gosudarstvennyy Universitet im. M. V. Lomonosova, Michurinskiy prospekt 1, Moscow 117234, U.S.S.R.
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Abstract

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In sub-isothermal glaciers heat conduction plays the main role in the formation of the temperature field, and the contribution of advection is relatively small. The dependence of the strain-rate on the temperature is simplified by a linear approximation. If the whole range of the temperature change in a glacier does not exceed ≈ 3 deg, with the power rheological law the quasi-steady temperature distribution is described by a simple analytical dependence. In the upper part of the ice, the temperature varies with depth almost linearly; the deflection from the linear distribution is essentially in the lower part.

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