Articles | Volume 15, issue 9
The Cryosphere, 15, 4381–4398, 2021
https://doi.org/10.5194/tc-15-4381-2021
The Cryosphere, 15, 4381–4398, 2021
https://doi.org/10.5194/tc-15-4381-2021

Research article 10 Sep 2021

Research article | 10 Sep 2021

Orientation selective grain sublimation–deposition in snow under temperature gradient metamorphism observed with diffraction contrast tomography

Rémi Granger et al.

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Cited articles

Adams, E. E. and Miller, D. A.: Ice crystals grown from vapor onto an orientated substrate: application to snow depth-hoar development and gas inclusions in lake ice, J. Glaciol., 49, 8–12, https://doi.org/10.3189/172756503781830953, 2003. a, b
Akitaya, E.: Studies on Depth Hoar, Contributions from the Institute of Low Temperature Science, 26, 1–67, 1974. a, b, c, d
Calonne, N.: Physique Des Métamorphoses de La Neige Sèche: De La Microstructure Aux Propriétés Macroscopiques, PhD Thesis, Grenoble, 2014. a
Calonne, N., Flin, F., Geindreau, C., Lesaffre, B., and Rolland du Roscoat, S.: Study of a temperature gradient metamorphism of snow from 3-D images: time evolution of microstructures, physical properties and their associated anisotropy, The Cryosphere, 8, 2255–2274, https://doi.org/10.5194/tc-8-2255-2014, 2014. a, b
Calonne, N., Flin, F., Lesaffre, B., Dufour, A., Roulle, J., Puglièse, P., Philip, A., Lahoucine, F., Geindreau, C., and Panel, J.-M.: CellDyM: A Room Temperature Operating Cryogenic Cell for the Dynamic Monitoring of Snow Metamorphism by Time-Lapse X-Ray Microtomography, Geophys. Res. Lett., 42, 3911–3918, https://doi.org/10.1002/2015GL063541, 2015. a, b, c
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Short summary
In this study on temperature gradient metamorphism in snow, we investigate the hypothesis that there exists a favourable crystal orientation relative to the temperature gradient. We measured crystallographic orientations of the grains and their microstructural evolution during metamorphism using in situ time-lapse diffraction contrast tomography. Faceted crystals appear during the evolution, and we observe higher sublimation–deposition rates for grains with their c axis in the horizontal plane.