Articles | Volume 8, issue 5
Solid Earth, 8, 883–898, 2017

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

Solid Earth, 8, 883–898, 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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Cited articles

Alley, R., Gow, A., and Meese, D.: Mapping c-axis fabrics to study physical processes in ice, J. Glaciol., 41, 197–203, 1995.
Alley, R. B.: Flow-law hypotheses for ice-sheet modelling, J. Glaciol., 38, 245–256, 1992.
Alley, R. B., Clark, P. U., Huybrechts, P., and Joughin, I.: Ice-Sheet and Sea-Level Changes, Science, 310, 456–460, 2005.
Arnaud, L., M., G., Barnola, J. M., and Duval, P.: Imaging firn and bubly ice in coaxial reflected light: a new technique for the characterization of these porous media, J. Glaciol., 44, 326–332, 1998.
Ashby, M. F.: The deformation of plastically non-homogenous materials, Philos. Mag., 21, 399–424, 1970.
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.