Extended East Antarctic ice-core tephrostratigraphy
International audience Three new tephra layers have been identified and analysed in the deeper sections of the EPICA Dome C (EDC) and Vostok ice record (East Antarctic plateau): one from EDC (358 ka old), originated from an Antarctic volcano, and two from Vostok (406 and 414 ka old, respectively), w...
Published in: | Quaternary Science Reviews |
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Main Authors: | , , |
Other Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2010
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Online Access: | https://insu.hal.science/insu-00420796 https://doi.org/10.1016/j.quascirev.2009.07.009 |
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Institut national des sciences de l'Univers: HAL-INSU |
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English |
topic |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Narcisi, Biancamaria Petit, Jean-Robert Delmonte, Barbara Extended East Antarctic ice-core tephrostratigraphy |
topic_facet |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience Three new tephra layers have been identified and analysed in the deeper sections of the EPICA Dome C (EDC) and Vostok ice record (East Antarctic plateau): one from EDC (358 ka old), originated from an Antarctic volcano, and two from Vostok (406 and 414 ka old, respectively), which are related to Antarctic volcanoes and to southern Andes and/or Antarctic Peninsula centres, respectively. These layers represent the oldest tephra-bearing events so far detected in deep polar ice cores and extend the regional tephrostratigraphic framework back to the fourth climatic cycle. Although differences between the drill sites are observed, new and previously published tephra data from deep ice cores broadly confirm that the clockwise circum-Antarctic atmospheric circulation played a major role in the dispersal of volcanic dust onto the plateau. While the last 220-ka core sections contain about a dozen visible tephra fall layers, the ice representing the time interval from 220 ka back to 800 ka (i.e. the EDC core bottom) is almost devoid of observed tephras. Although it is possible that the reduced frequency is an observational artefact, the observed pattern could alternatively reflect late Quaternary activity fluctuations of sources for tephra in the East Antarctic plateau, particularly South Sandwich Islands, with enhanced explosive activity in the last two glacial cycles with respect to previous periods. |
author2 |
Ente per le Nuove Technologie, l'Energia e l'Ambiente (ENEA) Centro Ricerche Casaccia CLIPS 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)-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) Department of Environmental Sciences Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB) PNRA European Project: 658258,H2020,H2020-MSCA-IF-2014,EPICA(2015) |
format |
Article in Journal/Newspaper |
author |
Narcisi, Biancamaria Petit, Jean-Robert Delmonte, Barbara |
author_facet |
Narcisi, Biancamaria Petit, Jean-Robert Delmonte, Barbara |
author_sort |
Narcisi, Biancamaria |
title |
Extended East Antarctic ice-core tephrostratigraphy |
title_short |
Extended East Antarctic ice-core tephrostratigraphy |
title_full |
Extended East Antarctic ice-core tephrostratigraphy |
title_fullStr |
Extended East Antarctic ice-core tephrostratigraphy |
title_full_unstemmed |
Extended East Antarctic ice-core tephrostratigraphy |
title_sort |
extended east antarctic ice-core tephrostratigraphy |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://insu.hal.science/insu-00420796 https://doi.org/10.1016/j.quascirev.2009.07.009 |
genre |
Antarc* Antarctic Antarctic Peninsula EPICA ice core South Sandwich Islands |
genre_facet |
Antarc* Antarctic Antarctic Peninsula EPICA ice core South Sandwich Islands |
op_source |
ISSN: 0277-3791 EISSN: 1873-457X Quaternary Science Reviews https://insu.hal.science/insu-00420796 Quaternary Science Reviews, 2010, 29 (1-2), pp.21-27. ⟨10.1016/j.quascirev.2009.07.009⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2009.07.009 info:eu-repo/grantAgreement//658258/EU/Exploring Photon-photon Interactions with Cold Rydberg Atoms/EPICA insu-00420796 https://insu.hal.science/insu-00420796 doi:10.1016/j.quascirev.2009.07.009 |
op_doi |
https://doi.org/10.1016/j.quascirev.2009.07.009 |
container_title |
Quaternary Science Reviews |
container_volume |
29 |
container_issue |
1-2 |
container_start_page |
21 |
op_container_end_page |
27 |
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1797581245257875456 |
spelling |
ftinsu:oai:HAL:insu-00420796v1 2024-04-28T07:55:50+00:00 Extended East Antarctic ice-core tephrostratigraphy Narcisi, Biancamaria Petit, Jean-Robert Delmonte, Barbara Ente per le Nuove Technologie, l'Energia e l'Ambiente (ENEA) Centro Ricerche Casaccia CLIPS 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)-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) Department of Environmental Sciences Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB) PNRA European Project: 658258,H2020,H2020-MSCA-IF-2014,EPICA(2015) 2010 https://insu.hal.science/insu-00420796 https://doi.org/10.1016/j.quascirev.2009.07.009 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2009.07.009 info:eu-repo/grantAgreement//658258/EU/Exploring Photon-photon Interactions with Cold Rydberg Atoms/EPICA insu-00420796 https://insu.hal.science/insu-00420796 doi:10.1016/j.quascirev.2009.07.009 ISSN: 0277-3791 EISSN: 1873-457X Quaternary Science Reviews https://insu.hal.science/insu-00420796 Quaternary Science Reviews, 2010, 29 (1-2), pp.21-27. ⟨10.1016/j.quascirev.2009.07.009⟩ [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2010 ftinsu https://doi.org/10.1016/j.quascirev.2009.07.009 2024-04-05T00:28:17Z International audience Three new tephra layers have been identified and analysed in the deeper sections of the EPICA Dome C (EDC) and Vostok ice record (East Antarctic plateau): one from EDC (358 ka old), originated from an Antarctic volcano, and two from Vostok (406 and 414 ka old, respectively), which are related to Antarctic volcanoes and to southern Andes and/or Antarctic Peninsula centres, respectively. These layers represent the oldest tephra-bearing events so far detected in deep polar ice cores and extend the regional tephrostratigraphic framework back to the fourth climatic cycle. Although differences between the drill sites are observed, new and previously published tephra data from deep ice cores broadly confirm that the clockwise circum-Antarctic atmospheric circulation played a major role in the dispersal of volcanic dust onto the plateau. While the last 220-ka core sections contain about a dozen visible tephra fall layers, the ice representing the time interval from 220 ka back to 800 ka (i.e. the EDC core bottom) is almost devoid of observed tephras. Although it is possible that the reduced frequency is an observational artefact, the observed pattern could alternatively reflect late Quaternary activity fluctuations of sources for tephra in the East Antarctic plateau, particularly South Sandwich Islands, with enhanced explosive activity in the last two glacial cycles with respect to previous periods. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula EPICA ice core South Sandwich Islands Institut national des sciences de l'Univers: HAL-INSU Quaternary Science Reviews 29 1-2 21 27 |