Texture characterization of some large hailstones with an automated technique
Abstract Hailstone structures have been studied for over a century, but so far mainly by manual optical means. This paper presents new texture and microstructure data (i.e. crystal lattice orientations, grain sizes and shapes) measured with an Automatic Ice Texture Analyzer, which gives access to hi...
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crcambridgeupr:10.1017/jog.2021.66 2024-09-09T19:49:03+00:00 Texture characterization of some large hailstones with an automated technique Montagnat, Maurine Bourcier, Mathieu Philip, Armelle Bons, Paul D. Bauer, Catherine C. Deconinck, Paul Hereil, Pierre 2021 http://dx.doi.org/10.1017/jog.2021.66 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143021000666 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by-nc-sa/4.0/ Journal of Glaciology volume 67, issue 266, page 1190-1204 ISSN 0022-1430 1727-5652 journal-article 2021 crcambridgeupr https://doi.org/10.1017/jog.2021.66 2024-07-31T04:04:15Z Abstract Hailstone structures have been studied for over a century, but so far mainly by manual optical means. This paper presents new texture and microstructure data (i.e. crystal lattice orientations, grain sizes and shapes) measured with an Automatic Ice Texture Analyzer, which gives access to high spatial and angular resolutions. The hailstones show two main characteristics: (1) they are structured with several concentric layers composed of alternating fine equiaxed grains and coarse elongated and radially oriented grains, and (2) they show two texture types with c -axes oriented either parallel or perpendicular to the radial direction. Such textures are compared with the ones observed in lake S1 and S2 ices, respectively. The S1 texture type (with c -axes parallel to the columnar crystals that grew in the radial direction) may result from epitaxial growth from a polycrystalline embryo, while the S2 texture ( c -axes in the plane perpendicular to the column direction) may result from the growth from an embryo made of a few crystals with mainly one crystallographic orientation. Our novel high-resolution maps and measurements of both microstructure and texture may help to shed new light on the long-term discussion on the growth mechanisms of large hailstones. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 1 15 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract Hailstone structures have been studied for over a century, but so far mainly by manual optical means. This paper presents new texture and microstructure data (i.e. crystal lattice orientations, grain sizes and shapes) measured with an Automatic Ice Texture Analyzer, which gives access to high spatial and angular resolutions. The hailstones show two main characteristics: (1) they are structured with several concentric layers composed of alternating fine equiaxed grains and coarse elongated and radially oriented grains, and (2) they show two texture types with c -axes oriented either parallel or perpendicular to the radial direction. Such textures are compared with the ones observed in lake S1 and S2 ices, respectively. The S1 texture type (with c -axes parallel to the columnar crystals that grew in the radial direction) may result from epitaxial growth from a polycrystalline embryo, while the S2 texture ( c -axes in the plane perpendicular to the column direction) may result from the growth from an embryo made of a few crystals with mainly one crystallographic orientation. Our novel high-resolution maps and measurements of both microstructure and texture may help to shed new light on the long-term discussion on the growth mechanisms of large hailstones. |
format |
Article in Journal/Newspaper |
author |
Montagnat, Maurine Bourcier, Mathieu Philip, Armelle Bons, Paul D. Bauer, Catherine C. Deconinck, Paul Hereil, Pierre |
spellingShingle |
Montagnat, Maurine Bourcier, Mathieu Philip, Armelle Bons, Paul D. Bauer, Catherine C. Deconinck, Paul Hereil, Pierre Texture characterization of some large hailstones with an automated technique |
author_facet |
Montagnat, Maurine Bourcier, Mathieu Philip, Armelle Bons, Paul D. Bauer, Catherine C. Deconinck, Paul Hereil, Pierre |
author_sort |
Montagnat, Maurine |
title |
Texture characterization of some large hailstones with an automated technique |
title_short |
Texture characterization of some large hailstones with an automated technique |
title_full |
Texture characterization of some large hailstones with an automated technique |
title_fullStr |
Texture characterization of some large hailstones with an automated technique |
title_full_unstemmed |
Texture characterization of some large hailstones with an automated technique |
title_sort |
texture characterization of some large hailstones with an automated technique |
publisher |
Cambridge University Press (CUP) |
publishDate |
2021 |
url |
http://dx.doi.org/10.1017/jog.2021.66 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143021000666 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 67, issue 266, page 1190-1204 ISSN 0022-1430 1727-5652 |
op_rights |
http://creativecommons.org/licenses/by-nc-sa/4.0/ |
op_doi |
https://doi.org/10.1017/jog.2021.66 |
container_title |
Journal of Glaciology |
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1 |
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15 |
_version_ |
1809918453614641152 |