Authors: Luciano, Gina L.; Albert, Mary R.

Source: Annals of Glaciology, Volume 35, Number 1, 1 January 2002 , pp. 63-66(4)

Publisher: International Glaciological Society

Abstract:

Ice cores provide a valuable archive of climate history. For a complete understanding of this archive, it is important to understand air-snow exchange processes through the snow and firn in order to fully decode the ice-core record. Transport processes through the snow and firn are dependent upon their physical properties. In this paper, bidirectional permeabilities from selected sections of a 13m core from Summit, Greenland, are presented. Differences between lateral and vertical permeabilities are evident throughout the core in permeameter data and in microstructure statistics. Both lateral and vertical permeabilities are consistent with overall patterns of previous polar permeability data with depth. The differences between lateral and vertical permeability measurements for some samples can be attributed to equivalent sphere radius. Further studies examining mean free-path length may be helpful in chemical modeling and in deriving an equation relating permeability to microstructure.

Document Type: Research article

DOI: http://dx.doi.org/10.3189/172756402781817095

Publication date: 2002-01-01

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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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