Characterization of ikaite (CaCO3•6H2O) crystals in first year Arctic sea ice north of Svalbard
We identified ikaite crystals (CaCO3·6H2O) and examined their shape and size distribution in first-year Arctic pack ice, overlying snow and slush layers during the spring melt onset north of Svalbard. Additional measurements of total alkalinity (TA) were made for melted snow and sea-ice samples. Ika...
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International Glaciological Society
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Online Access: | https://epic.awi.de/id/eprint/31673/ https://epic.awi.de/id/eprint/31673/1/Nomura-et-al-2013.pdf https://hdl.handle.net/10013/epic.41120 https://hdl.handle.net/10013/epic.41120.d001 |
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ftawi:oai:epic.awi.de:31673 2023-05-15T13:29:48+02:00 Characterization of ikaite (CaCO3•6H2O) crystals in first year Arctic sea ice north of Svalbard Nomura, Daiki Assmy, Philipp Nehrke, Gernot Granskog, Mats A. Fischer, Michael Dieckmann, Gerhard Fransson, Agneta Hu, Yubin Schnetger, Bernhard 2013 application/pdf https://epic.awi.de/id/eprint/31673/ https://epic.awi.de/id/eprint/31673/1/Nomura-et-al-2013.pdf https://hdl.handle.net/10013/epic.41120 https://hdl.handle.net/10013/epic.41120.d001 unknown International Glaciological Society https://epic.awi.de/id/eprint/31673/1/Nomura-et-al-2013.pdf https://hdl.handle.net/10013/epic.41120.d001 Nomura, D. , Assmy, P. , Nehrke, G. orcid:0000-0002-2851-3049 , Granskog, M. A. , Fischer, M. , Dieckmann, G. , Fransson, A. , Hu, Y. and Schnetger, B. (2013) Characterization of ikaite (CaCO3•6H2O) crystals in first year Arctic sea ice north of Svalbard , Annals of Glaciology, 54 (62), pp. 125-131 . doi:10.3189/2013AoG62A034 <https://doi.org/10.3189/2013AoG62A034> , hdl:10013/epic.41120 EPIC3Annals of Glaciology, International Glaciological Society, 54(62), pp. 125-131 Article isiRev 2013 ftawi https://doi.org/10.3189/2013AoG62A034 2021-12-24T15:38:09Z We identified ikaite crystals (CaCO3·6H2O) and examined their shape and size distribution in first-year Arctic pack ice, overlying snow and slush layers during the spring melt onset north of Svalbard. Additional measurements of total alkalinity (TA) were made for melted snow and sea-ice samples. Ikaite crystals were mainly found in the bottom of the snowpack, in slush and the surface layers of the sea ice where the temperature was generally lower and salinity higher than in the ice below. Image analysis showed that ikaite crystals were characterized by a roughly elliptical shape and a maximum caliper diameter of 201.0�115.9 mm (n = 918). Since the ice-melting season had already started, ikaite crystals may already have begun to dissolve, which might explain the lack of a relationship between ikaite crystal size and sea-ice parameters (temperature, salinity, and thickness of snow and ice). Comparisons of salinity and TA profiles for melted ice samples suggest that the precipitation/dissolution of ikaite crystals occurred at the top of the sea ice and the bottom of the snowpack during ice formation/ melting processes. Article in Journal/Newspaper Annals of Glaciology Arctic Arctic Sea ice Svalbard Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Svalbard Annals of Glaciology 54 62 125 131 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
We identified ikaite crystals (CaCO3·6H2O) and examined their shape and size distribution in first-year Arctic pack ice, overlying snow and slush layers during the spring melt onset north of Svalbard. Additional measurements of total alkalinity (TA) were made for melted snow and sea-ice samples. Ikaite crystals were mainly found in the bottom of the snowpack, in slush and the surface layers of the sea ice where the temperature was generally lower and salinity higher than in the ice below. Image analysis showed that ikaite crystals were characterized by a roughly elliptical shape and a maximum caliper diameter of 201.0�115.9 mm (n = 918). Since the ice-melting season had already started, ikaite crystals may already have begun to dissolve, which might explain the lack of a relationship between ikaite crystal size and sea-ice parameters (temperature, salinity, and thickness of snow and ice). Comparisons of salinity and TA profiles for melted ice samples suggest that the precipitation/dissolution of ikaite crystals occurred at the top of the sea ice and the bottom of the snowpack during ice formation/ melting processes. |
format |
Article in Journal/Newspaper |
author |
Nomura, Daiki Assmy, Philipp Nehrke, Gernot Granskog, Mats A. Fischer, Michael Dieckmann, Gerhard Fransson, Agneta Hu, Yubin Schnetger, Bernhard |
spellingShingle |
Nomura, Daiki Assmy, Philipp Nehrke, Gernot Granskog, Mats A. Fischer, Michael Dieckmann, Gerhard Fransson, Agneta Hu, Yubin Schnetger, Bernhard Characterization of ikaite (CaCO3•6H2O) crystals in first year Arctic sea ice north of Svalbard |
author_facet |
Nomura, Daiki Assmy, Philipp Nehrke, Gernot Granskog, Mats A. Fischer, Michael Dieckmann, Gerhard Fransson, Agneta Hu, Yubin Schnetger, Bernhard |
author_sort |
Nomura, Daiki |
title |
Characterization of ikaite (CaCO3•6H2O) crystals in first year Arctic sea ice north of Svalbard |
title_short |
Characterization of ikaite (CaCO3•6H2O) crystals in first year Arctic sea ice north of Svalbard |
title_full |
Characterization of ikaite (CaCO3•6H2O) crystals in first year Arctic sea ice north of Svalbard |
title_fullStr |
Characterization of ikaite (CaCO3•6H2O) crystals in first year Arctic sea ice north of Svalbard |
title_full_unstemmed |
Characterization of ikaite (CaCO3•6H2O) crystals in first year Arctic sea ice north of Svalbard |
title_sort |
characterization of ikaite (caco3•6h2o) crystals in first year arctic sea ice north of svalbard |
publisher |
International Glaciological Society |
publishDate |
2013 |
url |
https://epic.awi.de/id/eprint/31673/ https://epic.awi.de/id/eprint/31673/1/Nomura-et-al-2013.pdf https://hdl.handle.net/10013/epic.41120 https://hdl.handle.net/10013/epic.41120.d001 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Annals of Glaciology Arctic Arctic Sea ice Svalbard |
genre_facet |
Annals of Glaciology Arctic Arctic Sea ice Svalbard |
op_source |
EPIC3Annals of Glaciology, International Glaciological Society, 54(62), pp. 125-131 |
op_relation |
https://epic.awi.de/id/eprint/31673/1/Nomura-et-al-2013.pdf https://hdl.handle.net/10013/epic.41120.d001 Nomura, D. , Assmy, P. , Nehrke, G. orcid:0000-0002-2851-3049 , Granskog, M. A. , Fischer, M. , Dieckmann, G. , Fransson, A. , Hu, Y. and Schnetger, B. (2013) Characterization of ikaite (CaCO3•6H2O) crystals in first year Arctic sea ice north of Svalbard , Annals of Glaciology, 54 (62), pp. 125-131 . doi:10.3189/2013AoG62A034 <https://doi.org/10.3189/2013AoG62A034> , hdl:10013/epic.41120 |
op_doi |
https://doi.org/10.3189/2013AoG62A034 |
container_title |
Annals of Glaciology |
container_volume |
54 |
container_issue |
62 |
container_start_page |
125 |
op_container_end_page |
131 |
_version_ |
1766003212625641472 |