Microstructure evolution of young sea ice from a Svalbard fjord using micro-CT analysis
We analysed the three-dimensional microstructure of sea ice by means of X-ray-micro computed tomography. Microscopic (brine- and air- pore sizes, numbers and connectivity) and macroscopic (salinity, density, porosity) properties of young Arctic sea ice were analysed. The analysis is based on ice cor...
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Cambridge University Press
2021
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Online Access: | https://hdl.handle.net/11250/2987389 https://doi.org/10.1017/jog.2021.119 |
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2987389 2023-05-15T14:23:50+02:00 Microstructure evolution of young sea ice from a Svalbard fjord using micro-CT analysis Salomon, Martina Lan Maus, Sønke Petrich, Chris 2021 application/pdf https://hdl.handle.net/11250/2987389 https://doi.org/10.1017/jog.2021.119 eng eng Cambridge University Press Norges forskningsråd: 243812 Andre: Arctic Field Grant (AFG) Journal of Glaciology. 2021, 1-20. urn:issn:0022-1430 https://hdl.handle.net/11250/2987389 https://doi.org/10.1017/jog.2021.119 cristin:1972586 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no CC-BY 1-20 Journal of Glaciology Sea-ice growth and decay Sea ice Ice coring Sea ice geophysics VDP::Annen marin teknologi: 589 VDP::Other marine technology: 589 Peer reviewed Journal article 2021 ftntnutrondheimi https://doi.org/10.1017/jog.2021.119 2022-04-13T22:39:33Z We analysed the three-dimensional microstructure of sea ice by means of X-ray-micro computed tomography. Microscopic (brine- and air- pore sizes, numbers and connectivity) and macroscopic (salinity, density, porosity) properties of young Arctic sea ice were analysed. The analysis is based on ice cores obtained during spring 2016. Centrifuging of brine prior to CT imaging has allowed us to derive confident relationships between the open, vertically connected and total porosity of young sea ice at relatively high temperatures. We analysed the dependence of the microscopic properties on vertical position and total brine porosity. Most bulk properties (salinity,density) and pore space properties (pore sizes and their distribution) show a strong dependence on total brine porosity, but did not change significantly over the course of the field work.However, significant changes were observed for pore numbers decreasing over time) and pore connectivity (increasing over time). CT-based salinity determinations are subject to larger than standard uncertainties (from conductivity), while the CT method yields important information about the salinity contributions from closed and open pores. We also performed a comparison of CT-based air porosity with calculations based on density from hydrostatic weighing. The consistency is encouraging and gives confidence to our CT-based results. publishedVersion Article in Journal/Newspaper Arctic Arctic Journal of Glaciology Sea ice Svalbard NTNU Open Archive (Norwegian University of Science and Technology) Arctic Svalbard Journal of Glaciology 1 20 |
institution |
Open Polar |
collection |
NTNU Open Archive (Norwegian University of Science and Technology) |
op_collection_id |
ftntnutrondheimi |
language |
English |
topic |
Sea-ice growth and decay Sea ice Ice coring Sea ice geophysics VDP::Annen marin teknologi: 589 VDP::Other marine technology: 589 |
spellingShingle |
Sea-ice growth and decay Sea ice Ice coring Sea ice geophysics VDP::Annen marin teknologi: 589 VDP::Other marine technology: 589 Salomon, Martina Lan Maus, Sønke Petrich, Chris Microstructure evolution of young sea ice from a Svalbard fjord using micro-CT analysis |
topic_facet |
Sea-ice growth and decay Sea ice Ice coring Sea ice geophysics VDP::Annen marin teknologi: 589 VDP::Other marine technology: 589 |
description |
We analysed the three-dimensional microstructure of sea ice by means of X-ray-micro computed tomography. Microscopic (brine- and air- pore sizes, numbers and connectivity) and macroscopic (salinity, density, porosity) properties of young Arctic sea ice were analysed. The analysis is based on ice cores obtained during spring 2016. Centrifuging of brine prior to CT imaging has allowed us to derive confident relationships between the open, vertically connected and total porosity of young sea ice at relatively high temperatures. We analysed the dependence of the microscopic properties on vertical position and total brine porosity. Most bulk properties (salinity,density) and pore space properties (pore sizes and their distribution) show a strong dependence on total brine porosity, but did not change significantly over the course of the field work.However, significant changes were observed for pore numbers decreasing over time) and pore connectivity (increasing over time). CT-based salinity determinations are subject to larger than standard uncertainties (from conductivity), while the CT method yields important information about the salinity contributions from closed and open pores. We also performed a comparison of CT-based air porosity with calculations based on density from hydrostatic weighing. The consistency is encouraging and gives confidence to our CT-based results. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Salomon, Martina Lan Maus, Sønke Petrich, Chris |
author_facet |
Salomon, Martina Lan Maus, Sønke Petrich, Chris |
author_sort |
Salomon, Martina Lan |
title |
Microstructure evolution of young sea ice from a Svalbard fjord using micro-CT analysis |
title_short |
Microstructure evolution of young sea ice from a Svalbard fjord using micro-CT analysis |
title_full |
Microstructure evolution of young sea ice from a Svalbard fjord using micro-CT analysis |
title_fullStr |
Microstructure evolution of young sea ice from a Svalbard fjord using micro-CT analysis |
title_full_unstemmed |
Microstructure evolution of young sea ice from a Svalbard fjord using micro-CT analysis |
title_sort |
microstructure evolution of young sea ice from a svalbard fjord using micro-ct analysis |
publisher |
Cambridge University Press |
publishDate |
2021 |
url |
https://hdl.handle.net/11250/2987389 https://doi.org/10.1017/jog.2021.119 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Arctic Journal of Glaciology Sea ice Svalbard |
genre_facet |
Arctic Arctic Journal of Glaciology Sea ice Svalbard |
op_source |
1-20 Journal of Glaciology |
op_relation |
Norges forskningsråd: 243812 Andre: Arctic Field Grant (AFG) Journal of Glaciology. 2021, 1-20. urn:issn:0022-1430 https://hdl.handle.net/11250/2987389 https://doi.org/10.1017/jog.2021.119 cristin:1972586 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1017/jog.2021.119 |
container_title |
Journal of Glaciology |
container_start_page |
1 |
op_container_end_page |
20 |
_version_ |
1766296312208162816 |