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Articles | Volume 8, issue 5
Articles | Volume 8, issue 5
https://doi.org/10.5194/se-8-883-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Special issue:
https://doi.org/10.5194/se-8-883-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 8, issue 5
Research article
 | 
06 Sep 2017
Research article |  | 06 Sep 2017

EBSD analysis of subgrain boundaries and dislocation slip systems in Antarctic and Greenland ice

Ilka Weikusat, Ernst-Jan N. Kuiper, Gill M. Pennock, Sepp Kipfstuhl, and Martyn R. Drury

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Short summary
Understanding the flow of large ice masses on Earth is a major challenge in our changing climate. Deformation mechanisms are governed by the strong anisotropy of ice. As anisotropy is currently moving into the focus of ice sheet flow studies, we provide a detailed analysis of microstructure data from natural ice core samples which directly relate to anisotropic plasticity. Our findings reveal surprising dislocation activity which seems to contradict the concept of macroscopic ice anisotropy.
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Analysis of deformation microstructures and mechanisms on...