Atmospheric trace elements in Antarctic prehistoric ice collected at a coastal ablation area
International audience We present here the results of the analysis of 22 elements or compounds in a large block of prehistoric blue ice more than 12000 years old collected at a coastal ablation area in east Antarctica. Successive veneer layers chiselled in sequence from the exterior to the center ha...
Published in: | Atmospheric Environment (1967) |
---|---|
Main Authors: | , , |
Other Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
1984
|
Subjects: | |
Online Access: | https://hal.science/hal-03516176 https://doi.org/10.1016/0004-6981(84)90372-X |
id |
ftunivsavoie:oai:HAL:hal-03516176v1 |
---|---|
record_format |
openpolar |
spelling |
ftunivsavoie:oai:HAL:hal-03516176v1 2024-04-14T08:04:24+00:00 Atmospheric trace elements in Antarctic prehistoric ice collected at a coastal ablation area Boutron, Claude Leclerc, Michel Risler, Nicolas Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Centre des Faibles Radioactivités Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS) 1984-01 https://hal.science/hal-03516176 https://doi.org/10.1016/0004-6981(84)90372-X en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/0004-6981(84)90372-X hal-03516176 https://hal.science/hal-03516176 doi:10.1016/0004-6981(84)90372-X ISSN: 0004-6981 Atmospheric environment https://hal.science/hal-03516176 Atmospheric environment, 1984, 18 (9), pp.1947-1953. ⟨10.1016/0004-6981(84)90372-X⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 1984 ftunivsavoie https://doi.org/10.1016/0004-6981(84)90372-X 2024-04-04T17:30:30Z International audience We present here the results of the analysis of 22 elements or compounds in a large block of prehistoric blue ice more than 12000 years old collected at a coastal ablation area in east Antarctica. Successive veneer layers chiselled in sequence from the exterior to the center have been analysed separately in order to determine the contamination characteristics of the block.Concentrations measured in the central parts probably represent the original concentrations in the prehistoric blue ice, thus giving estimates of pre-man natural reference, levels of these elements or compounds in Antarctic precipitations. For the enriched elements Cd, Cu, Zn, Au, Se and for SO4, concentrations are shown not to differ significantly from those presently observed in surface snow in the central plateau areas from which the ice is thought to originate. This suggests that the remote polar regions of the southern hemisphere are still little affected by global pollution for these elements and for S compounds. For crustal derived elements, concentrations in prehistoric ice are found to be significantly higher than those in present day snow; this confirms that crustal flux to the Antarctic continent was higher during Wisconsin times than now. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Université Savoie Mont Blanc: HAL Antarctic East Antarctica The Antarctic Atmospheric Environment (1967) 18 9 1947 1953 |
institution |
Open Polar |
collection |
Université Savoie Mont Blanc: HAL |
op_collection_id |
ftunivsavoie |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Boutron, Claude Leclerc, Michel Risler, Nicolas Atmospheric trace elements in Antarctic prehistoric ice collected at a coastal ablation area |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience We present here the results of the analysis of 22 elements or compounds in a large block of prehistoric blue ice more than 12000 years old collected at a coastal ablation area in east Antarctica. Successive veneer layers chiselled in sequence from the exterior to the center have been analysed separately in order to determine the contamination characteristics of the block.Concentrations measured in the central parts probably represent the original concentrations in the prehistoric blue ice, thus giving estimates of pre-man natural reference, levels of these elements or compounds in Antarctic precipitations. For the enriched elements Cd, Cu, Zn, Au, Se and for SO4, concentrations are shown not to differ significantly from those presently observed in surface snow in the central plateau areas from which the ice is thought to originate. This suggests that the remote polar regions of the southern hemisphere are still little affected by global pollution for these elements and for S compounds. For crustal derived elements, concentrations in prehistoric ice are found to be significantly higher than those in present day snow; this confirms that crustal flux to the Antarctic continent was higher during Wisconsin times than now. |
author2 |
Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Centre des Faibles Radioactivités Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Boutron, Claude Leclerc, Michel Risler, Nicolas |
author_facet |
Boutron, Claude Leclerc, Michel Risler, Nicolas |
author_sort |
Boutron, Claude |
title |
Atmospheric trace elements in Antarctic prehistoric ice collected at a coastal ablation area |
title_short |
Atmospheric trace elements in Antarctic prehistoric ice collected at a coastal ablation area |
title_full |
Atmospheric trace elements in Antarctic prehistoric ice collected at a coastal ablation area |
title_fullStr |
Atmospheric trace elements in Antarctic prehistoric ice collected at a coastal ablation area |
title_full_unstemmed |
Atmospheric trace elements in Antarctic prehistoric ice collected at a coastal ablation area |
title_sort |
atmospheric trace elements in antarctic prehistoric ice collected at a coastal ablation area |
publisher |
HAL CCSD |
publishDate |
1984 |
url |
https://hal.science/hal-03516176 https://doi.org/10.1016/0004-6981(84)90372-X |
geographic |
Antarctic East Antarctica The Antarctic |
geographic_facet |
Antarctic East Antarctica The Antarctic |
genre |
Antarc* Antarctic Antarctica East Antarctica |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica |
op_source |
ISSN: 0004-6981 Atmospheric environment https://hal.science/hal-03516176 Atmospheric environment, 1984, 18 (9), pp.1947-1953. ⟨10.1016/0004-6981(84)90372-X⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/0004-6981(84)90372-X hal-03516176 https://hal.science/hal-03516176 doi:10.1016/0004-6981(84)90372-X |
op_doi |
https://doi.org/10.1016/0004-6981(84)90372-X |
container_title |
Atmospheric Environment (1967) |
container_volume |
18 |
container_issue |
9 |
container_start_page |
1947 |
op_container_end_page |
1953 |
_version_ |
1796300908290637824 |