Two-dimensional impurity imaging in deep Antarctic ice cores: snapshots of three climatic periods and implications for high-resolution signal interpretation
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...
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Online Access: | https://doi.org/10.5194/tc-15-3523-2021 https://tc.copernicus.org/articles/15/3523/2021/tc-15-3523-2021.pdf https://doaj.org/article/a89b79b45b4b43d6a8609dc0923ba159 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:a89b79b45b4b43d6a8609dc0923ba159 2023-05-15T13:47:19+02:00 Two-dimensional impurity imaging in deep Antarctic ice cores: snapshots of three climatic periods and implications for high-resolution signal interpretation P. Bohleber M. Roman M. Šala B. Delmonte B. Stenni C. Barbante 2021-07-01 https://doi.org/10.5194/tc-15-3523-2021 https://tc.copernicus.org/articles/15/3523/2021/tc-15-3523-2021.pdf https://doaj.org/article/a89b79b45b4b43d6a8609dc0923ba159 en eng Copernicus Publications doi:10.5194/tc-15-3523-2021 1994-0416 1994-0424 https://tc.copernicus.org/articles/15/3523/2021/tc-15-3523-2021.pdf https://doaj.org/article/a89b79b45b4b43d6a8609dc0923ba159 undefined The Cryosphere, Vol 15, Pp 3523-3538 (2021) geo archeo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2021 fttriple https://doi.org/10.5194/tc-15-3523-2021 2023-01-22T19:27:36Z 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. Article in Journal/Newspaper Antarc* Antarctic Antarctica EPICA ice core The Cryosphere Unknown Antarctic Talos Dome ENVELOPE(158.000,158.000,-73.000,-73.000) The Cryosphere 15 7 3523 3538 |
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Open Polar |
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language |
English |
topic |
geo archeo |
spellingShingle |
geo archeo P. Bohleber M. Roman M. Šala B. Delmonte B. Stenni C. Barbante Two-dimensional impurity imaging in deep Antarctic ice cores: snapshots of three climatic periods and implications for high-resolution signal interpretation |
topic_facet |
geo archeo |
description |
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. |
format |
Article in Journal/Newspaper |
author |
P. Bohleber M. Roman M. Šala B. Delmonte B. Stenni C. Barbante |
author_facet |
P. Bohleber M. Roman M. Šala B. Delmonte B. Stenni C. Barbante |
author_sort |
P. Bohleber |
title |
Two-dimensional impurity imaging in deep Antarctic ice cores: snapshots of three climatic periods and implications for high-resolution signal interpretation |
title_short |
Two-dimensional impurity imaging in deep Antarctic ice cores: snapshots of three climatic periods and implications for high-resolution signal interpretation |
title_full |
Two-dimensional impurity imaging in deep Antarctic ice cores: snapshots of three climatic periods and implications for high-resolution signal interpretation |
title_fullStr |
Two-dimensional impurity imaging in deep Antarctic ice cores: snapshots of three climatic periods and implications for high-resolution signal interpretation |
title_full_unstemmed |
Two-dimensional impurity imaging in deep Antarctic ice cores: snapshots of three climatic periods and implications for high-resolution signal interpretation |
title_sort |
two-dimensional impurity imaging in deep antarctic ice cores: snapshots of three climatic periods and implications for high-resolution signal interpretation |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/tc-15-3523-2021 https://tc.copernicus.org/articles/15/3523/2021/tc-15-3523-2021.pdf https://doaj.org/article/a89b79b45b4b43d6a8609dc0923ba159 |
long_lat |
ENVELOPE(158.000,158.000,-73.000,-73.000) |
geographic |
Antarctic Talos Dome |
geographic_facet |
Antarctic Talos Dome |
genre |
Antarc* Antarctic Antarctica EPICA ice core The Cryosphere |
genre_facet |
Antarc* Antarctic Antarctica EPICA ice core The Cryosphere |
op_source |
The Cryosphere, Vol 15, Pp 3523-3538 (2021) |
op_relation |
doi:10.5194/tc-15-3523-2021 1994-0416 1994-0424 https://tc.copernicus.org/articles/15/3523/2021/tc-15-3523-2021.pdf https://doaj.org/article/a89b79b45b4b43d6a8609dc0923ba159 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-15-3523-2021 |
container_title |
The Cryosphere |
container_volume |
15 |
container_issue |
7 |
container_start_page |
3523 |
op_container_end_page |
3538 |
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1766246883018145792 |