Imaging air volume fraction in sea ice using non-destructive X-ray tomography
peer reviewed 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 distr...
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2016
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Online Access: | https://orbi.uliege.be/handle/2268/199158 https://orbi.uliege.be/bitstream/2268/199158/1/Crabeck%20et%20al%202016.pdf https://doi.org/10.5194/tc-10-1125-2016 |
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ftorbi:oai:orbi.ulg.ac.be:2268/199158 2024-04-21T08:11:09+00:00 Imaging air volume fraction in sea ice using non-destructive X-ray tomography Crabeck, O Galley, R.J. Delille, Bruno Else, B.G.T. Geilus, N.-X. Lemes, M. Des Roches, M. Francus, P. Tison, J.-L. Rysgaard, S. FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège 2016-05 https://orbi.uliege.be/handle/2268/199158 https://orbi.uliege.be/bitstream/2268/199158/1/Crabeck%20et%20al%202016.pdf https://doi.org/10.5194/tc-10-1125-2016 en eng Copernicus urn:issn:1994-0416 urn:issn:1994-0424 https://orbi.uliege.be/handle/2268/199158 info:hdl:2268/199158 https://orbi.uliege.be/bitstream/2268/199158/1/Crabeck%20et%20al%202016.pdf doi:10.5194/tc-10-1125-2016 scopus-id:2-s2.0-84971408129 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess The Cryosphere, 10, 1125-1145 (2016-05) Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2016 ftorbi https://doi.org/10.5194/tc-10-1125-2016 2024-03-27T14:58:15Z peer reviewed 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 (1mm<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 The Cryosphere University of Liège: ORBi (Open Repository and Bibliography) The Cryosphere 10 3 1125 1145 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Crabeck, O Galley, R.J. Delille, Bruno Else, B.G.T. Geilus, 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 |
topic_facet |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
peer reviewed 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 (1mm<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. |
author2 |
FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège |
format |
Article in Journal/Newspaper |
author |
Crabeck, O Galley, R.J. Delille, Bruno Else, B.G.T. Geilus, N.-X. Lemes, M. Des Roches, M. Francus, P. Tison, J.-L. Rysgaard, S. |
author_facet |
Crabeck, O Galley, R.J. Delille, Bruno Else, B.G.T. Geilus, 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 |
publisher |
Copernicus |
publishDate |
2016 |
url |
https://orbi.uliege.be/handle/2268/199158 https://orbi.uliege.be/bitstream/2268/199158/1/Crabeck%20et%20al%202016.pdf https://doi.org/10.5194/tc-10-1125-2016 |
genre |
Sea ice The Cryosphere |
genre_facet |
Sea ice The Cryosphere |
op_source |
The Cryosphere, 10, 1125-1145 (2016-05) |
op_relation |
urn:issn:1994-0416 urn:issn:1994-0424 https://orbi.uliege.be/handle/2268/199158 info:hdl:2268/199158 https://orbi.uliege.be/bitstream/2268/199158/1/Crabeck%20et%20al%202016.pdf doi:10.5194/tc-10-1125-2016 scopus-id:2-s2.0-84971408129 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 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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1796952831156027392 |