Ion fractionation in young sea ice from Kongsfjorden, Svalbard
The fractionation of major sea-water ions, or deviation in their relative concentrations from Standard Mean Ocean Water ratios, has been frequently observed in sea ice. It is generally thought to be associated with precipitation of solid salts at certain eutectic temperatures. The variability found...
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ftunivbern:oai:boris.unibe.ch:9803 2024-09-15T17:39:57+00:00 Ion fractionation in young sea ice from Kongsfjorden, Svalbard Maus, S. Müller, S. Büttner, J. Brütsch, S. Huthwelker, T. Schwikowski, M. Enzmann, F. Vähätolo, A. 2011 https://boris.unibe.ch/9803/ eng eng International Glaciological Society https://boris.unibe.ch/9803/ info:eu-repo/semantics/restrictedAccess Maus, S.; Müller, S.; Büttner, J.; Brütsch, S.; Huthwelker, T.; Schwikowski, M.; Enzmann, F.; Vähätolo, A. (2011). Ion fractionation in young sea ice from Kongsfjorden, Svalbard. Annals of glaciology, 52(57), pp. 301-310. Cambridge: International Glaciological Society 10.3189/172756411795931804 <http://dx.doi.org/10.3189/172756411795931804> info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion NonPeerReviewed 2011 ftunivbern https://doi.org/10.3189/172756411795931804 2024-06-24T05:12:09Z The fractionation of major sea-water ions, or deviation in their relative concentrations from Standard Mean Ocean Water ratios, has been frequently observed in sea ice. It is generally thought to be associated with precipitation of solid salts at certain eutectic temperatures. The variability found in bulk sea-ice samples indicates that the fractionation of ions depends on the often unknown thermal history of sea ice, which affects the structure of pore networks and fate of solid salts within them. Here we investigate the distribution of ions in Arctic sea ice that is a few weeks old with a reconstructible thermal history. We separate the centrifugable (interconnected) and entrapped (likely disconnected) contributions to the ice salinity and determine their ion fractionation signatures. The results indicate that differential diffusion of ions, rather than eutectic precipitation of cryohydrates, has led to significant ion fractionation. The finding emphasizes the role of coupled diffusive–convective salt transport through complex pore networks in shaping the biogeochemistry of sea ice. Article in Journal/Newspaper Annals of Glaciology Kongsfjord* Kongsfjorden Sea ice Svalbard BORIS (Bern Open Repository and Information System, University of Bern) Annals of Glaciology 52 57 301 310 |
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Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
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ftunivbern |
language |
English |
description |
The fractionation of major sea-water ions, or deviation in their relative concentrations from Standard Mean Ocean Water ratios, has been frequently observed in sea ice. It is generally thought to be associated with precipitation of solid salts at certain eutectic temperatures. The variability found in bulk sea-ice samples indicates that the fractionation of ions depends on the often unknown thermal history of sea ice, which affects the structure of pore networks and fate of solid salts within them. Here we investigate the distribution of ions in Arctic sea ice that is a few weeks old with a reconstructible thermal history. We separate the centrifugable (interconnected) and entrapped (likely disconnected) contributions to the ice salinity and determine their ion fractionation signatures. The results indicate that differential diffusion of ions, rather than eutectic precipitation of cryohydrates, has led to significant ion fractionation. The finding emphasizes the role of coupled diffusive–convective salt transport through complex pore networks in shaping the biogeochemistry of sea ice. |
format |
Article in Journal/Newspaper |
author |
Maus, S. Müller, S. Büttner, J. Brütsch, S. Huthwelker, T. Schwikowski, M. Enzmann, F. Vähätolo, A. |
spellingShingle |
Maus, S. Müller, S. Büttner, J. Brütsch, S. Huthwelker, T. Schwikowski, M. Enzmann, F. Vähätolo, A. Ion fractionation in young sea ice from Kongsfjorden, Svalbard |
author_facet |
Maus, S. Müller, S. Büttner, J. Brütsch, S. Huthwelker, T. Schwikowski, M. Enzmann, F. Vähätolo, A. |
author_sort |
Maus, S. |
title |
Ion fractionation in young sea ice from Kongsfjorden, Svalbard |
title_short |
Ion fractionation in young sea ice from Kongsfjorden, Svalbard |
title_full |
Ion fractionation in young sea ice from Kongsfjorden, Svalbard |
title_fullStr |
Ion fractionation in young sea ice from Kongsfjorden, Svalbard |
title_full_unstemmed |
Ion fractionation in young sea ice from Kongsfjorden, Svalbard |
title_sort |
ion fractionation in young sea ice from kongsfjorden, svalbard |
publisher |
International Glaciological Society |
publishDate |
2011 |
url |
https://boris.unibe.ch/9803/ |
genre |
Annals of Glaciology Kongsfjord* Kongsfjorden Sea ice Svalbard |
genre_facet |
Annals of Glaciology Kongsfjord* Kongsfjorden Sea ice Svalbard |
op_source |
Maus, S.; Müller, S.; Büttner, J.; Brütsch, S.; Huthwelker, T.; Schwikowski, M.; Enzmann, F.; Vähätolo, A. (2011). Ion fractionation in young sea ice from Kongsfjorden, Svalbard. Annals of glaciology, 52(57), pp. 301-310. Cambridge: International Glaciological Society 10.3189/172756411795931804 <http://dx.doi.org/10.3189/172756411795931804> |
op_relation |
https://boris.unibe.ch/9803/ |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.3189/172756411795931804 |
container_title |
Annals of Glaciology |
container_volume |
52 |
container_issue |
57 |
container_start_page |
301 |
op_container_end_page |
310 |
_version_ |
1810483611461222400 |