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: | http://hdl.handle.net/10278/3741759 https://doi.org/10.5194/tc-15-3523-2021 |
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ftuniveneziairis:oai:iris.unive.it:10278/3741759 2024-04-14T08:03:47+00:00 Two-dimensional impurity imaging in deep Antarctic ice cores: snapshots of three climatic periods and implications for high-resolution signal interpretation Bohleber, Pascal Roman, Marco Šala, Martin Delmonte, Barbara Stenni, Barbara Barbante, Carlo Bohleber, Pascal Roman, Marco Šala, Martin Delmonte, Barbara Stenni, Barbara Barbante, Carlo 2021 http://hdl.handle.net/10278/3741759 https://doi.org/10.5194/tc-15-3523-2021 unknown info:eu-repo/semantics/altIdentifier/wos/WOS:000679857400001 volume:15 issue:7 firstpage:3523 lastpage:3538 numberofpages:16 journal:THE CRYOSPHERE http://hdl.handle.net/10278/3741759 doi:10.5194/tc-15-3523-2021 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85111772999 info:eu-repo/semantics/openAccess Settore CHIM/01 - Chimica Analitica Settore GEO/08 - Geochimica e Vulcanologia info:eu-repo/semantics/article 2021 ftuniveneziairis https://doi.org/10.5194/tc-15-3523-2021 2024-03-21T18:18:29Z 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 i mage 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 demon-strated 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 Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) Antarctic Talos Dome ENVELOPE(158.000,158.000,-73.000,-73.000) The Cryosphere 15 7 3523 3538 |
institution |
Open Polar |
collection |
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) |
op_collection_id |
ftuniveneziairis |
language |
unknown |
topic |
Settore CHIM/01 - Chimica Analitica Settore GEO/08 - Geochimica e Vulcanologia |
spellingShingle |
Settore CHIM/01 - Chimica Analitica Settore GEO/08 - Geochimica e Vulcanologia Bohleber, Pascal Roman, Marco Šala, Martin Delmonte, Barbara Stenni, Barbara Barbante, Carlo Two-dimensional impurity imaging in deep Antarctic ice cores: snapshots of three climatic periods and implications for high-resolution signal interpretation |
topic_facet |
Settore CHIM/01 - Chimica Analitica Settore GEO/08 - Geochimica e Vulcanologia |
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 i mage 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 demon-strated 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. |
author2 |
Bohleber, Pascal Roman, Marco Šala, Martin Delmonte, Barbara Stenni, Barbara Barbante, Carlo |
format |
Article in Journal/Newspaper |
author |
Bohleber, Pascal Roman, Marco Šala, Martin Delmonte, Barbara Stenni, Barbara Barbante, Carlo |
author_facet |
Bohleber, Pascal Roman, Marco Šala, Martin Delmonte, Barbara Stenni, Barbara Barbante, Carlo |
author_sort |
Bohleber, Pascal |
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 |
publishDate |
2021 |
url |
http://hdl.handle.net/10278/3741759 https://doi.org/10.5194/tc-15-3523-2021 |
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 |
genre_facet |
Antarc* Antarctic Antarctica EPICA ice core |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000679857400001 volume:15 issue:7 firstpage:3523 lastpage:3538 numberofpages:16 journal:THE CRYOSPHERE http://hdl.handle.net/10278/3741759 doi:10.5194/tc-15-3523-2021 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85111772999 |
op_rights |
info:eu-repo/semantics/openAccess |
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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1796300081356341248 |