globalchange  > 影响、适应和脆弱性
DOI: 10.5194/tc-10-1125-2016
Scopus记录号: 2-s2.0-84971408129
论文题名:
Imaging air volume fraction in sea ice using non-destructive X-ray tomography
作者: Crabeck O; , Galley R; , Delille B; , Else B; , Geilfus N; -X; , Lemes M; , Roches M; D; , Francus P; , Tison J; -L; , Rysgaard S
刊名: Cryosphere
ISSN: 19940416
出版年: 2016
卷: 10, 期:3
起始页码: 1125
结束页码: 1145
语种: 英语
英文关键词: air bubble ; air-ice interaction ; air-sea interaction ; brine ; gas exchange ; gas transport ; permeability ; porosity ; sea ice ; vertical distribution ; volume ; X-ray
英文摘要: Although the presence of a gas phase in sea ice creates the potential for gas exchange with the atmosphere, the distribution of gas bubbles and transport of gases within the sea ice are still poorly understood. Currently no straightforward technique exists to measure the vertical distribution of air volume fraction in sea ice. Here, we present a new fast and non-destructive X-ray computed tomography technique to quantify the air volume fraction and produce separate images of air volume inclusions in sea ice. The technique was performed on relatively thin (4–22cm) sea ice collected from an experimental ice tank. While most of the internal layers showed air volume fractions < 2 %, the ice-air interface (top 2 cm) systematically showed values up to 5 %. We suggest that the air volume fraction is a function of both the bulk ice gas saturation factor and the brine volume fraction. We differentiate micro bubbles (Ø < 1 mm), large bubbles (1 mm < Ø < 5 mm) and macro bubbles (Ø > 5 mm). While micro bubbles were the most abundant type of gas bubbles, most of the air porosity observed resulted from the presence of large and macro bubbles. The ice texture (granular and columnar) as well as the permeability state of ice are important factors controlling the air volume fraction. The technique developed is suited for studies related to gas transport and bubble migration. © Author(s) 2016.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75137
Appears in Collections:影响、适应和脆弱性
气候变化与战略

Files in This Item:

There are no files associated with this item.


作者单位: Department of Geological Sciences, Centre for Earth Observation, University of Manitoba, Winnipeg, MB, Canada; Unité d'Océanographie Chimique, MARE, Université de Liège, Liège, Belgium; Department of Geography, University of Calgary, Calgary, AB, Canada; Arctic Research Centre, Aarhus University, Aarhus, Denmark; Centre Eau terre et Environement, INRS-Été-Quebec, Quebec, Canada; Laboratoire de Glaciologie, DSTE, Université Libre de Bruxelles, Bruxelles, Belgium; Greenland Climate Research Centre, Greenland Institute of Natural Resources, Nuuk, Greenland

Recommended Citation:
Crabeck O,, Galley R,, Delille B,et al. Imaging air volume fraction in sea ice using non-destructive X-ray tomography[J]. Cryosphere,2016-01-01,10(3)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Crabeck O]'s Articles
[, Galley R]'s Articles
[, Delille B]'s Articles
百度学术
Similar articles in Baidu Scholar
[Crabeck O]'s Articles
[, Galley R]'s Articles
[, Delille B]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Crabeck O]‘s Articles
[, Galley R]‘s Articles
[, Delille B]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.