Microstructures in polar ice cores


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Ilka.Weikusat [ at ] awi.de

Abstract

Ice: hexagonal; highly anisotropic (mainly basal glide). Deformation: dislocations (and more). Non-basal dislocations form subGB. Dynamic recrystallization significant (hot, heterogeneous strains). Recrystallization regimes in temperature - strain rate - grain size state space. Dynamic grain growth caused by strain-induced GB migration. Grain size reduction by rotation recrystallization. Competition of the recrystallization processes results in a steady-state grain size as surface in the state space. Clues to GS-sensitive deformation.



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Conference (Talk)
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Published
Event Details
Mini symposium on Microstructures of rocks and ice, 10 May 2014 - 14 May 2014, Tübingen.
Eprint ID
37853
Cite as
Weikusat, I. (2014): Microstructures in polar ice cores , Mini symposium on Microstructures of rocks and ice, Tübingen, 10 May 2014 - 14 May 2014 .


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