Articles | Volume 8, issue 5
Solid Earth, 8, 883–898, 2017
https://doi.org/10.5194/se-8-883-2017

Special issue: Analysis of deformation microstructures and mechanisms on...

Solid Earth, 8, 883–898, 2017
https://doi.org/10.5194/se-8-883-2017

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 et al.

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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.