Articles | Volume 19, issue 12
https://doi.org/10.5194/tc-19-6943-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-19-6943-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
19 Dec 2025
Research article |
| 19 Dec 2025
| 19 Dec 2025
A unified framework for large-scale fabric evolution models and anisotropic rheologies
The Australian Centre for Excellence in Antarctic Science, University of Tasmania, Hobart, Australia
British Antarctic Survey, Cambridge, United Kingdom
Elisa Mantelli
Department of Earth and Environmental Sciences, Ludwig-Maximillians-Universitaet, Munich, Germany
Glaciology Section, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
Samuel S. Pegler
School of Mathematics, University of Leeds, Leeds, United Kingdom
Sandra Piazolo
School of Earth and Environment, University of Leeds, Leeds, United Kingdom
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Ice often exhibits a single-cluster fabric when deformed to high strains in glaciers and ice sheets. Using the equal-channel angular pressing technique, we achieved high shear strains in laboratory experiments and examined the fabrics. We investigated the evolutions of fabric and recrystallization mechanisms with strain. The results suggest that rotation recrystallization dominates fabric development when ice is deformed to high strains, explaining the fabrics found in natural ice.
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Short summary
Ice behaves differently depending on its crystal orientation, but how this affects its flow is unclear. We combine a range of previous models into a common equation to better understand crystal alignment. We tested a range of previous models on ice streams and divides, discovering that the best fit to observations comes from (a) assuming neighbouring crystals have the same stress, and (b) through describing the effect of crystal orientation on the flow in a way that allows directional variation.
Ice behaves differently depending on its crystal orientation, but how this affects its flow is...
