globalchange  > 气候变化与战略
DOI: 10.5194/tc-15-3523-2021
论文题名:
Two-dimensional impurity imaging in deep Antarctic ice cores: Snapshots of three climatic periods and implications for high-resolution signal interpretation
作者: Bohleber P.; Roman M.; Sala M.; Delmonte B.; Stenni B.; Barbante C.
刊名: Cryosphere
ISSN: 19940416
出版年: 2021
卷: 15, 期:7
起始页码: 3523
结束页码: 3538
语种: 英语
英文关键词: ablation ; climate signal ; climate variation ; data interpretation ; glacial-interglacial cycle ; ice core ; image analysis ; imaging method ; polar region ; proxy climate record ; two-dimensional modeling ; Antarctica ; Dome Concordia ; East Antarctica ; Talos Dome
英文摘要: Due to its micrometer-scale resolution and inherently micro-destructive nature, laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) is particularly suited to exploring the thin and closely spaced layers in the oldest sections of polar ice cores. Recent adaptions to the LA-ICP-MS instrumentation mean we have faster washout times allowing state-of-the-art 2-D imaging of an ice core. This new method has great potential especially when applied to the localization of impurities on the ice sample, something that is crucial, to avoiding misinterpretation of the ultra-fine-resolution signals. Here we present the first results of the application of LA-ICP-MS elemental imaging to the analysis of selected glacial and interglacial samples from the Talos Dome and EPICA Dome C ice cores from central Antarctica. The localization of impurities from both marine and terrestrial sources is discussed, with special emphasis on observing a connection with the network of grain boundaries and differences between different climatic periods. Scale-dependent image analysis shows that the spatial significance of a single line profile along the main core axis increases systematically as the imprint of the grain boundaries weakens. It is demonstrated how instrumental settings can be adapted to suit the purpose of the analysis, i.e., by either employing LA-ICP-MS to study the interplay between impurities and the ice microstructure or to investigate the extremely thin climate proxy signals in deep polar ice. © Copyright:
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164660
Appears in Collections: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 Environmental Sciences, Informatics and Statistics, Ca'Foscari University of Venice, Venice, Italy; Department of Analytical Chemistry, National Institute of Chemistry, Ljubljana, Slovenia; Department of Earth and Environmental Sciences, Università Degli Studi di Milano-Bicocca, Milan, Italy; Institute of Polar Sciences, CNR, Venice, Italy

Recommended Citation:
Bohleber P.,Roman M.,Sala M.,et al. Two-dimensional impurity imaging in deep Antarctic ice cores: Snapshots of three climatic periods and implications for high-resolution signal interpretation[J]. Cryosphere,2021-01-01,15(7)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Bohleber P.]'s Articles
[Roman M.]'s Articles
[Sala M.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Bohleber P.]'s Articles
[Roman M.]'s Articles
[Sala M.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Bohleber P.]‘s Articles
[Roman M.]‘s Articles
[Sala M.]‘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.