Authors: Flin, Frédéric; Brzoska, Jean-Bruno

Source: Annals of Glaciology, Volume 49, Number 1, October 2008 , pp. 17-21(5)

Publisher: International Glaciological Society

Abstract:

A simple physical model describing the temperature-gradient metamorphism of snow is presented. This model, based on Kelvin's equation and Fick's law, takes into account the local variation of the saturating vapour pressure with temperature. It can determine locally whether the ice is condensing or subliming, depending on both the pressure and temperature fields in the snow structure. This model can also explain the formation of facets that occurs during the metamorphism. Using X-ray microtomographic images of snow samples obtained under low to moderate temperature-gradient conditions, this model has been tested and compared to the reaction-limited model proposed in a previous work.

Document Type: Research article

DOI: http://dx.doi.org/10.3189/172756408787814834

Publication date: 2008-10-01

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• The Annals of Glaciology is a peer-reviewed, thematic journal published 2 to 4 times a year by the International Glaciological Society (IGS). Publication frequency is determined and volume/issue numbers assigned by the IGS Council on a year-to-year basis and with a lead time of 3 to 4 years. The Annals of Glaciology is included in the ISI Science Citation Index from volume 50, number 50 onwards.

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