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TC | Articles | Volume 14, issue 11
The Cryosphere, 14, 3875–3905, 2020
https://doi.org/10.5194/tc-14-3875-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
The Cryosphere, 14, 3875–3905, 2020
https://doi.org/10.5194/tc-14-3875-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 10 Nov 2020

Research article | 10 Nov 2020

Temperature and strain controls on ice deformation mechanisms: insights from the microstructures of samples deformed to progressively higher strains at −10, −20 and −30 °C

Sheng Fan et al.

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Cited articles

Ajaja, O.: Role of recovery in high temperature constant strain rate deformation, J. Mater. Sci., 26, 6599–6605, https://doi.org/10.1007/BF02402651, 1991. 
Alley, R. B.: Flow-law hypotheses for ice-sheet modelling, J. Glaciol., 38, 245–256, https://doi.org/10.1017/s0022143000003658, 1992. 
Austin, N. J. and Evans, B.: Paleowattmeters: A scaling relation for dynamically recrystallized grain size, Geology, 35, 343–344, https://doi.org/10.1130/G23244A.1, 2007. 
Azuma, N.: A flow law for anisotropic polycrystalline ice under uniaxial compressive deformation, Cold Reg. Sci. Technol., 23, 137–147, https://doi.org/10.1016/0165-232x00011-l, 1995. 
Bachmann, F., Hielscher, R. and Schaeben, H.: Grain detection from 2d and 3d EBSD data – Specification of the MTEX algorithm, Ultramicroscopy, 111, 1720–1733, https://doi.org/10.1016/j.ultramic.2011.08.002, 2011. 
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We performed uniaxial compression experiments on synthetic ice samples. We report ice microstructural evolution at –20 and –30 °C that has never been reported before. Microstructural data show the opening angle of c-axis cones decreases with increasing strain or with decreasing temperature, suggesting a more active grain rotation. CPO intensity weakens with temperature because CPO of small grains is weaker, and it can be explained by grain boundary sliding or nucleation with random orientations.
We performed uniaxial compression experiments on synthetic ice samples. We report ice...
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