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Recrystallization Processes in Granular Ice

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/45435

Title: Recrystallization Processes in Granular Ice
Authors: Montagnat, Maurine Browse this author
Durand, Gaël Browse this author
Duval, Paul Browse this author
Keywords: Dynamic recrystallization
Ice sheets
Microstructures
Fabrics
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: 81
End Page: 90
Abstract: Recrystallization mechanisms are known to accommodate the deformation as observed along ice cores. The three main processes are classically described as being, successively from the top of the cores, normal grain growth, rotation dynamic recrystallization and migration dynamic recrystallization. Recent observations on local mechanisms at the grain scale tend to question this description. This paper aims at presenting the basic knowledge about dynamic recrystallization processes in materials, with focus on the corresponding mechanisms occuring during deformation of granular ice, more particularly along ice cores. We stress the significance of the scale to consider when analysing the mechanisms, depending on the applications. In particular, we will demonstrate that dislocation substructures can develop locally, due to strong strain heterogeneities, without challenging the classical description that explains the evolution of average grain size and fabrics along ice cores.
Description: I. Microphysical properties, deformation, texture and grain growth
Type: bulletin (article)
URI: http://hdl.handle.net/2115/45435
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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