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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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00013321 2023-05-15T18:16:39+02:00 Imaging air volume fraction in sea ice using non-destructive X-ray tomography Crabeck, Odile Galley, Ryan Delille, Bruno Else, Brent Geilfus, Nicolas-Xavier Lemes, Marcos Des Roches, Mathieu Francus, Pierre Tison, Jean-Louis Rysgaard, Søren 2016-05 electronic https://doi.org/10.5194/tc-10-1125-2016 https://noa.gwlb.de/receive/cop_mods_00013321 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00013277/tc-10-1125-2016.pdf https://tc.copernicus.org/articles/10/1125/2016/tc-10-1125-2016.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-10-1125-2016 https://noa.gwlb.de/receive/cop_mods_00013321 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00013277/tc-10-1125-2016.pdf https://tc.copernicus.org/articles/10/1125/2016/tc-10-1125-2016.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2016 ftnonlinearchiv https://doi.org/10.5194/tc-10-1125-2016 2022-02-08T22:55:39Z 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 The Cryosphere Niedersächsisches Online-Archiv NOA The Cryosphere 10 3 1125 1145 |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Crabeck, Odile Galley, Ryan Delille, Bruno Else, Brent Geilfus, Nicolas-Xavier Lemes, Marcos Des Roches, Mathieu Francus, Pierre Tison, Jean-Louis Rysgaard, Søren Imaging air volume fraction in sea ice using non-destructive X-ray tomography |
topic_facet |
article Verlagsveröffentlichung |
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, Odile Galley, Ryan Delille, Bruno Else, Brent Geilfus, Nicolas-Xavier Lemes, Marcos Des Roches, Mathieu Francus, Pierre Tison, Jean-Louis Rysgaard, Søren |
author_facet |
Crabeck, Odile Galley, Ryan Delille, Bruno Else, Brent Geilfus, Nicolas-Xavier Lemes, Marcos Des Roches, Mathieu Francus, Pierre Tison, Jean-Louis Rysgaard, Søren |
author_sort |
Crabeck, Odile |
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 Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/tc-10-1125-2016 https://noa.gwlb.de/receive/cop_mods_00013321 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00013277/tc-10-1125-2016.pdf https://tc.copernicus.org/articles/10/1125/2016/tc-10-1125-2016.pdf |
genre |
Sea ice The Cryosphere |
genre_facet |
Sea ice The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-10-1125-2016 https://noa.gwlb.de/receive/cop_mods_00013321 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00013277/tc-10-1125-2016.pdf https://tc.copernicus.org/articles/10/1125/2016/tc-10-1125-2016.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-10-1125-2016 |
container_title |
The Cryosphere |
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10 |
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3 |
container_start_page |
1125 |
op_container_end_page |
1145 |
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