Articles | Volume 16, issue 5
https://doi.org/10.5194/tc-16-2009-2022
https://doi.org/10.5194/tc-16-2009-2022
Research article
 | 
25 May 2022
Research article |  | 25 May 2022

Can changes in deformation regimes be inferred from crystallographic preferred orientations in polar ice?

Maria-Gema Llorens, Albert Griera, Paul D. Bons, Ilka Weikusat, David J. Prior, Enrique Gomez-Rivas, Tamara de Riese, Ivone Jimenez-Munt, Daniel García-Castellanos, and Ricardo A. Lebensohn

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Cited articles

Alley, R. B.: Fabrics in polar ice sheets: development and prediction, Science, 240, 493–495, 1988. 
Azuma, N., Wang, Y., Mori, K., Narita, H., Hondoh, T., Shoji, H., and Watanabe, O.: Textures and fabrics in the Dome F (Antarctica) ice core, Ann. Glaciol., 29, 163–168, 1999. 
Bachmann, F., Hielscher, R., and Schaeben, H.: Grain detection from 2d and 3d EBSD data – Specification of the MTEX algorithm, Ultramicroscopy, 111, 1720–1733, 2011. 
Behn, M. D., Goldsby, D. L., and Hirth, G.: The role of grain size evolution in the rheology of ice: implications for reconciling laboratory creep data and the Glen flow law, The Cryosphere, 15, 4589–4605, https://doi.org/10.5194/tc-15-4589-2021, 2021. 
Boneh, Y. and Skemer, P.: The effect of deformation history on the evolution of olivine CPO, Earth Planet. Sc. Lett., 406, 213–222, 2014. 
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Short summary
Polar ice is formed by ice crystals, which form fabrics that are utilised to interpret how ice sheets flow. It is unclear whether fabrics result from the current flow regime or if they are inherited. To understand the extent to which ice crystals can be reoriented when ice flow conditions change, we simulate and evaluate multi-stage ice flow scenarios according to natural cases. We find that second deformation regimes normally overprint inherited fabrics, with a range of transitional fabrics.