Imaging air volume fraction in sea ice using non-destructive X-ray tomography
Although the presence of a gas phase in sea ice creates the potential for gas exchange with the atmosphere, the distribution of gas bubbles and transport of gases within the sea ice are still poorly understood. Currently no straightforward technique exists to measure the vertical distribution of air...
Published in: | The Cryosphere |
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Language: | English |
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2016
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Online Access: | https://www.vliz.be/imisdocs/publications/302283.pdf |
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ftvliz:oai:oma.vliz.be:285717 2023-05-15T18:16:39+02:00 Imaging air volume fraction in sea ice using non-destructive X-ray tomography Crabeck, O. Galley, R. Delille, B. Else, B. Geilfus, N.-X. Lemes, M. Des Roches, M. Francus, P. Tison, J.-L. Rysgaard, S. 2016 application/pdf https://www.vliz.be/imisdocs/publications/302283.pdf en eng info:eu-repo/semantics/altIdentifier/wos/000379415500012 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.5194/tc-10-1125-2016 https://www.vliz.be/imisdocs/publications/302283.pdf info:eu-repo/semantics/openAccess %3Ci%3ECryosphere+10%283%29%3C%2Fi%3E%3A+1125-1145.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.5194%2Ftc-10-1125-2016%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.5194%2Ftc-10-1125-2016%3C%2Fa%3E info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2016 ftvliz https://doi.org/10.5194/tc-10-1125-2016 2022-05-01T10:50:30Z Although the presence of a gas phase in sea ice creates the potential for gas exchange with the atmosphere, the distribution of gas bubbles and transport of gases within the sea ice are still poorly understood. Currently no straightforward technique exists to measure the vertical distribution of air volume fraction in sea ice. Here, we present a new fast and non-destructive X-ray computed tomography technique to quantify the air volume fraction and produce separate images of air volume inclusions in sea ice. The technique was performed on relatively thin (4–22 cm) sea ice collected from an experimental ice tank. While most of the internal layers showed air volume fractions < 2 %, the ice–air interface (top 2 cm) systematically showed values up to 5 %. We suggest that the air volume fraction is a function of both the bulk ice gas saturation factor and the brine volume fraction. We differentiate micro bubbles (Ø < 1 mm), large bubbles (1 mm < Ø < 5 mm) and macro bubbles (Ø > 5 mm). While micro bubbles were the most abundant type of gas bubbles, most of the air porosity observed resulted from the presence of large and macro bubbles. The ice texture (granular and columnar) as well as the permeability state of ice are important factors controlling the air volume fraction. The technique developed is suited for studies related to gas transport and bubble migration. Article in Journal/Newspaper Sea ice Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) The Cryosphere 10 3 1125 1145 |
institution |
Open Polar |
collection |
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) |
op_collection_id |
ftvliz |
language |
English |
description |
Although the presence of a gas phase in sea ice creates the potential for gas exchange with the atmosphere, the distribution of gas bubbles and transport of gases within the sea ice are still poorly understood. Currently no straightforward technique exists to measure the vertical distribution of air volume fraction in sea ice. Here, we present a new fast and non-destructive X-ray computed tomography technique to quantify the air volume fraction and produce separate images of air volume inclusions in sea ice. The technique was performed on relatively thin (4–22 cm) sea ice collected from an experimental ice tank. While most of the internal layers showed air volume fractions < 2 %, the ice–air interface (top 2 cm) systematically showed values up to 5 %. We suggest that the air volume fraction is a function of both the bulk ice gas saturation factor and the brine volume fraction. We differentiate micro bubbles (Ø < 1 mm), large bubbles (1 mm < Ø < 5 mm) and macro bubbles (Ø > 5 mm). While micro bubbles were the most abundant type of gas bubbles, most of the air porosity observed resulted from the presence of large and macro bubbles. The ice texture (granular and columnar) as well as the permeability state of ice are important factors controlling the air volume fraction. The technique developed is suited for studies related to gas transport and bubble migration. |
format |
Article in Journal/Newspaper |
author |
Crabeck, O. Galley, R. Delille, B. Else, B. Geilfus, N.-X. Lemes, M. Des Roches, M. Francus, P. Tison, J.-L. Rysgaard, S. |
spellingShingle |
Crabeck, O. Galley, R. Delille, B. Else, B. Geilfus, N.-X. Lemes, M. Des Roches, M. Francus, P. Tison, J.-L. Rysgaard, S. Imaging air volume fraction in sea ice using non-destructive X-ray tomography |
author_facet |
Crabeck, O. Galley, R. Delille, B. Else, B. Geilfus, N.-X. Lemes, M. Des Roches, M. Francus, P. Tison, J.-L. Rysgaard, S. |
author_sort |
Crabeck, O. |
title |
Imaging air volume fraction in sea ice using non-destructive X-ray tomography |
title_short |
Imaging air volume fraction in sea ice using non-destructive X-ray tomography |
title_full |
Imaging air volume fraction in sea ice using non-destructive X-ray tomography |
title_fullStr |
Imaging air volume fraction in sea ice using non-destructive X-ray tomography |
title_full_unstemmed |
Imaging air volume fraction in sea ice using non-destructive X-ray tomography |
title_sort |
imaging air volume fraction in sea ice using non-destructive x-ray tomography |
publishDate |
2016 |
url |
https://www.vliz.be/imisdocs/publications/302283.pdf |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
%3Ci%3ECryosphere+10%283%29%3C%2Fi%3E%3A+1125-1145.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.5194%2Ftc-10-1125-2016%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.5194%2Ftc-10-1125-2016%3C%2Fa%3E |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/000379415500012 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.5194/tc-10-1125-2016 https://www.vliz.be/imisdocs/publications/302283.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-10-1125-2016 |
container_title |
The Cryosphere |
container_volume |
10 |
container_issue |
3 |
container_start_page |
1125 |
op_container_end_page |
1145 |
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1766190430612881408 |