| DOI: | 10.1002/2013GL058479
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| 论文题名: | Gypsum crystals observed in experimental and natural sea ice |
| 作者: | Geilfus N.-X.; Galley R.J.; Cooper M.; Halden N.; Hare A.; Wang F.; Søgaard D.H.; Rysgaard S.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8279
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| EISSN: | 1944-8010
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| 出版年: | 2013
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| 卷: | 40, 期:24 | | 起始页码: | 6362
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| 结束页码: | 6367
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| 语种: | 英语
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| 英文关键词: | FREZCHEM
; gypsum
; ikaite
; sea ice
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| Scopus关键词: | Authigenic
; FREZCHEM
; Gypsum crystals
; Gypsum precipitation
; ikaite
; Model results
; Sea ice
; X ray diffraction analysis
; Gypsum
; authigenic mineral
; crystal
; experimental study
; gypsum
; ikaite
; marine sediment
; numerical model
; polar region
; precipitation (chemistry)
; sea ice
; sea surface temperature
; X-ray diffraction
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| 英文摘要: | 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. ©2013. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84892685398&doi=10.1002%2f2013GL058479&partnerID=40&md5=7fcbfc5d4580687f82d79200cadb9cb1
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/5543
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Centre for Earth Observation Science, University of Manitoba, Winnipeg, MB, Canada
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| Recommended Citation: | |
Geilfus N.-X.,Galley R.J.,Cooper M.,et al. Gypsum crystals observed in experimental and natural sea ice[J]. Geophysical Research Letters,2013-01-01,40(24).
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