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...
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ftunivbruxelles:oai:dipot.ulb.ac.be:2013/219721 2023-05-15T18:16:48+02:00 Imaging air volume fraction in sea ice using non-destructive X-ray tomography Crabeck, O. Galley, R. J. Delille, Bruno Else, Brent Geilfus, Nicolas Xavier Lemes, M. Des Roches, M. Francus, P. Tison, Jean-Louis Rysgaard, Søren 2015 1 full-text file(s): application/pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/219721 https://dipot.ulb.ac.be/dspace/bitstream/2013/219721/3/doi_203348.pdf fr fre uri/info:doi/10.5194/tcd-9-5203-2015 uri/info:scp/84971408129 https://dipot.ulb.ac.be/dspace/bitstream/2013/219721/3/doi_203348.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/219721 1 full-text file(s): info:eu-repo/semantics/openAccess The Cryosphere Discussions, 9 Sciences exactes et naturelles Sciences de la terre et du cosmos info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2015 ftunivbruxelles 2022-06-12T21:27:54Z 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 (4–22cm) 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. SCOPUS: ar.j info:eu-repo/semantics/published Article in Journal/Newspaper Sea ice The Cryosphere The Cryosphere Discussions DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
French |
topic |
Sciences exactes et naturelles Sciences de la terre et du cosmos |
spellingShingle |
Sciences exactes et naturelles Sciences de la terre et du cosmos Crabeck, O. Galley, R. J. Delille, Bruno Else, Brent Geilfus, Nicolas Xavier Lemes, M. Des Roches, M. Francus, P. Tison, Jean-Louis Rysgaard, Søren Imaging air volume fraction in sea ice using non-destructive X-ray tomography |
topic_facet |
Sciences exactes et naturelles Sciences de la terre et du cosmos |
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 (4–22cm) 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. SCOPUS: ar.j info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
Crabeck, O. Galley, R. J. Delille, Bruno Else, Brent Geilfus, Nicolas Xavier Lemes, M. Des Roches, M. Francus, P. Tison, Jean-Louis Rysgaard, Søren |
author_facet |
Crabeck, O. Galley, R. J. Delille, Bruno Else, Brent Geilfus, Nicolas Xavier Lemes, M. Des Roches, M. Francus, P. Tison, Jean-Louis Rysgaard, Søren |
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 |
2015 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/219721 https://dipot.ulb.ac.be/dspace/bitstream/2013/219721/3/doi_203348.pdf |
genre |
Sea ice The Cryosphere The Cryosphere Discussions |
genre_facet |
Sea ice The Cryosphere The Cryosphere Discussions |
op_source |
The Cryosphere Discussions, 9 |
op_relation |
uri/info:doi/10.5194/tcd-9-5203-2015 uri/info:scp/84971408129 https://dipot.ulb.ac.be/dspace/bitstream/2013/219721/3/doi_203348.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/219721 |
op_rights |
1 full-text file(s): info:eu-repo/semantics/openAccess |
_version_ |
1766190684777218048 |