Gypsum crystals observed in experimental and natural sea ice
Although gypsum has been predicted to precipitate in sea ice, it has never been observed. Here we provide the first report on gypsum precipitation in both experimental and natural sea ice. Crystals were identified by X-ray diffraction analysis. Based on their apparent distinguishing characteristics,...
Published in: | Geophysical Research Letters |
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Online Access: | https://pure.au.dk/portal/en/publications/9c896354-932e-455a-9821-19b0eb53dd1c https://doi.org/10.1002/2013GL058479 https://pure.au.dk/ws/files/68062192/Geilfus_et_al_2013_Gypsum.pdf |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/9c896354-932e-455a-9821-19b0eb53dd1c 2024-02-11T10:08:28+01:00 Gypsum crystals observed in experimental and natural sea ice Geilfus, Nicolas-Xavier Galley, Ryan Cooper, Marc Halden, Norman Hare, Alex Wang, Fei Søgaard, Dorte Rysgaard, Søren 2013 application/pdf https://pure.au.dk/portal/en/publications/9c896354-932e-455a-9821-19b0eb53dd1c https://doi.org/10.1002/2013GL058479 https://pure.au.dk/ws/files/68062192/Geilfus_et_al_2013_Gypsum.pdf eng eng https://pure.au.dk/portal/en/publications/9c896354-932e-455a-9821-19b0eb53dd1c info:eu-repo/semantics/openAccess Geilfus , N-X , Galley , R , Cooper , M , Halden , N , Hare , A , Wang , F , Søgaard , D & Rysgaard , S 2013 , ' Gypsum crystals observed in experimental and natural sea ice ' , Geophysical Research Letters , vol. 40 , no. 24 , pp. 6362–6367 . https://doi.org/10.1002/2013GL058479 , https://doi.org/10.1002/2013GL058479 gypsum sea ice frezchem ikaite article 2013 ftuniaarhuspubl https://doi.org/10.1002/2013GL058479 2024-01-17T23:59:13Z Although gypsum has been predicted to precipitate in sea ice, it has never been observed. Here we provide the first report on gypsum precipitation in both experimental and natural sea ice. Crystals were identified by X-ray diffraction analysis. Based on their apparent distinguishing characteristics, the gypsum crystals were identified as being authigenic. The FREeZing CHEMistry (FREZCHEM) model results support our observations of both gypsum and ikaite precipitation at typical in situ sea ice temperatures and confirms the “Gitterman pathway” where gypsum is predicted to precipitate. The occurrence of authigenic gypsum in sea ice during its formation represents a new observation of precipitate formation and potential marine deposition in polar seas. Citation: Geilfus, N.-X., R. J. Galley, M. Cooper, N. Halden, A. Hare, F. Wang, D. H. Søgaard, and S. Rysgaard (2013), Gypsum crystals observed in experimental and natural sea ice, Geophys. Res. Lett., 40, doi:10.1002/2013GL058479. Article in Journal/Newspaper Sea ice Aarhus University: Research Geophysical Research Letters 40 24 6362 6367 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
gypsum sea ice frezchem ikaite |
spellingShingle |
gypsum sea ice frezchem ikaite Geilfus, Nicolas-Xavier Galley, Ryan Cooper, Marc Halden, Norman Hare, Alex Wang, Fei Søgaard, Dorte Rysgaard, Søren Gypsum crystals observed in experimental and natural sea ice |
topic_facet |
gypsum sea ice frezchem ikaite |
description |
Although gypsum has been predicted to precipitate in sea ice, it has never been observed. Here we provide the first report on gypsum precipitation in both experimental and natural sea ice. Crystals were identified by X-ray diffraction analysis. Based on their apparent distinguishing characteristics, the gypsum crystals were identified as being authigenic. The FREeZing CHEMistry (FREZCHEM) model results support our observations of both gypsum and ikaite precipitation at typical in situ sea ice temperatures and confirms the “Gitterman pathway” where gypsum is predicted to precipitate. The occurrence of authigenic gypsum in sea ice during its formation represents a new observation of precipitate formation and potential marine deposition in polar seas. Citation: Geilfus, N.-X., R. J. Galley, M. Cooper, N. Halden, A. Hare, F. Wang, D. H. Søgaard, and S. Rysgaard (2013), Gypsum crystals observed in experimental and natural sea ice, Geophys. Res. Lett., 40, doi:10.1002/2013GL058479. |
format |
Article in Journal/Newspaper |
author |
Geilfus, Nicolas-Xavier Galley, Ryan Cooper, Marc Halden, Norman Hare, Alex Wang, Fei Søgaard, Dorte Rysgaard, Søren |
author_facet |
Geilfus, Nicolas-Xavier Galley, Ryan Cooper, Marc Halden, Norman Hare, Alex Wang, Fei Søgaard, Dorte Rysgaard, Søren |
author_sort |
Geilfus, Nicolas-Xavier |
title |
Gypsum crystals observed in experimental and natural sea ice |
title_short |
Gypsum crystals observed in experimental and natural sea ice |
title_full |
Gypsum crystals observed in experimental and natural sea ice |
title_fullStr |
Gypsum crystals observed in experimental and natural sea ice |
title_full_unstemmed |
Gypsum crystals observed in experimental and natural sea ice |
title_sort |
gypsum crystals observed in experimental and natural sea ice |
publishDate |
2013 |
url |
https://pure.au.dk/portal/en/publications/9c896354-932e-455a-9821-19b0eb53dd1c https://doi.org/10.1002/2013GL058479 https://pure.au.dk/ws/files/68062192/Geilfus_et_al_2013_Gypsum.pdf |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Geilfus , N-X , Galley , R , Cooper , M , Halden , N , Hare , A , Wang , F , Søgaard , D & Rysgaard , S 2013 , ' Gypsum crystals observed in experimental and natural sea ice ' , Geophysical Research Letters , vol. 40 , no. 24 , pp. 6362–6367 . https://doi.org/10.1002/2013GL058479 , https://doi.org/10.1002/2013GL058479 |
op_relation |
https://pure.au.dk/portal/en/publications/9c896354-932e-455a-9821-19b0eb53dd1c |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2013GL058479 |
container_title |
Geophysical Research Letters |
container_volume |
40 |
container_issue |
24 |
container_start_page |
6362 |
op_container_end_page |
6367 |
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1790607821222445056 |