The Cryosphere
The Cryosphere
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Articles | Volume 18, issue 2
Articles | Volume 18, issue 2
https://doi.org/10.5194/tc-18-819-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-18-819-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 2
Research article
 | 
20 Feb 2024
Research article |  | 20 Feb 2024

Partial melting in polycrystalline ice: pathways identified in 3D neutron tomographic images

Christopher J. L. Wilson, Mark Peternell, Filomena Salvemini, Vladimir Luzin, Frieder Enzmann, Olga Moravcova, and Nicholas J. R. Hunter

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Cited articles

Adams C. J. C., Iverson, N. R., Helanow, C., Zoet, L. K., and Bate, C. E.: Softening of temperate ice by interstitial water, Front. Earth Sci., 9, 702761, https://doi.org/10.3389/feart.2021.702761, 2021. 
Alley, R. B., Dupont, T. K., Parizek, B. R., and Anandakrishnan, S.: Access of surface meltwater to beds of sub-freezing glaciers: preliminary insights, Ann. Glaciol., 40, 8–14, https://doi.org/10.3189/172756405781813483, 1988. 
Andrew, M.: Comparing organic-hosted and intergranular pore networks: topography and topology in grains, gaps and bubbles, J. Geol. Soc. Lond. Spec. Pub., 484, 241–253, https://doi.org/10.1144/SP484.4, 2020. 
Barnes, P., Tabor, D., and Walker, J. C. F.: The Friction and Creep of Polycrystalline Ice, Proc. Roy. Soc. Lond., A324, 127–155, https://doi.org/10.1098/rspa.1971.0132, 1971. 
Bell, R. E., Studinger, M., Shuman, C. A., Fahnestock, M. A., and Joughin, I.: Deformation, warming and softening of Greenland's ice by refreezing meltwater, Nat. Geosci., 445, 904–907, https://doi.org/10.1038/nature05554, 2007. 
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Short summary
As the temperature increases within a deforming ice aggregate, composed of deuterium (D2O) ice and water (H2O) ice, a set of meltwater segregations are produced. These are composed of H2O and HDO and are located in conjugate shear bands and in compaction bands which accommodate the deformation and weaken the ice aggregate. This has major implications for the passage of meltwater in ice sheets and the formation of the layering recognized in glaciers.
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