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A Review of Anisotropic Polar Ice Models : from Crystal to Ice-Sheet Flow Models

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Title: A Review of Anisotropic Polar Ice Models : from Crystal to Ice-Sheet Flow Models
Authors: Gagliardini, Olivier Browse this author
Gillel-Chaulet, Fabien Browse this author
Montagnat, Maurine Browse this author
Keywords: Anisotropic model
Issue Date: Dec-2009
Publisher: Institute of Low Temperature Science, Hokkaido University
Citation: Physics of Ice Core Records II : Papers collected after the 2nd International Workshop on Physics of Ice Core Records, held in Sapporo, Japan, 2-6 February 2007. Edited by Takeo Hondoh
Journal Title: 低温科学
Journal Title(alt): Low Temperature Science
Volume: 68
Issue: Supplement
Start Page: 149
End Page: 166
Abstract: The ice single crystal is one of the most anisotropic natural materials and the resulting viscous behaviour of polycrystalline ice can also be strongly anisotropic and is a function of the distribution of the crystal c-axis orientations, i.e. its fabric. Such a strong and strain-dependant anisotropy of the ice polycrystal certainly affects the general flow of polar ice. The aim of this paper is to present an exhaustive overview of most of the glaciological efforts made from more than two decades to account for polar ice anisotropy in ice flow modelling, from the crystal to the ice-sheets scale. We first recall the deformation and recrystallization proccsses occurring within ice-sheets and their respective effect on the polar ice textures. Then, the different models developed to describe the behaviour of the ice crystal and the polycrystal are presented, with a special emphasis on homogenization methods and fabric description. Finally, existing anisotropic ice flow models and their applications are reviewed.
Description: II. Ice-sheet flow model
Type: bulletin (article)
Appears in Collections:低温科学 = Low Temperature Science > vol. 68, Supplement Issue

Submitter: 低温科学研究所図書室

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