Anomalous flow below 2700 m in the EPICA Dome C ice core detected using d 18 O of atmospheric oxygen measurements
International audience While there are no indications of mixing back to 800 000 years in the EPICA Dome C ice core record, comparison with marine sediment records shows significant differences in the timing and duration of events prior to stage 11 (~430 ka, thousand of years before 1950). A relation...
Main Authors: | , , , , , , , , , , , |
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Other Authors: | , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2007
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Online Access: | https://hal.archives-ouvertes.fr/hal-00330721 https://hal.archives-ouvertes.fr/hal-00330721/document https://hal.archives-ouvertes.fr/hal-00330721/file/cpd-3-63-2007.pdf |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
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English |
topic |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Dreyfus, G. B. Parrenin, F. Lemieux-Dudon, B. Durand, Geoffroy Masson-Delmotte, Valérie Jouzel, Jean Barnola, J.-M. Panno, L. Spahni, R. Tisserand, A. Siegenthaler, U. Leuenberger, M. Anomalous flow below 2700 m in the EPICA Dome C ice core detected using d 18 O of atmospheric oxygen measurements |
topic_facet |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience While there are no indications of mixing back to 800 000 years in the EPICA Dome C ice core record, comparison with marine sediment records shows significant differences in the timing and duration of events prior to stage 11 (~430 ka, thousand of years before 1950). A relationship between the isotopic composition of atmospheric oxygen (d 18 O of O 2 , noted d 18 O atm ) and daily northern hemisphere summer insolation has been observed for the youngest four climate cycles. Here we use this relationship with new d 18 O of O 2 measurements to show that anomalous flow in the bottom 500 m of the core distorts the duration of events by up to a factor of 2. By tuning d 18 O atm to orbital precession we derive a corrected thinning function and present a revised age scale for the interval corresponding to Marine Isotope Stages 11–20 in the EPICA Dome C ice core. Uncertainty in the phasing of d 18 O atm with respect to insolation variations in the precession band limits the accuracy of this new agescale to ±6 kyr (thousand of years). The previously reported ~30 kyr duration of interglacial stage 11 is unchanged. In contrast, the duration of stage 15.1 is reduced by a factor of 2, from 31 to 16 kyr. |
author2 |
Institut Pierre-Simon-Laplace (IPSL) École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS) Department of Geosciences Princeton Princeton University Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - 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 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) Niels Bohr Institute Copenhagen (NBI) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (KU)-University of Copenhagen = Københavns Universitet (KU) Physics Institute Environnements et Paléoenvironnements OCéaniques (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Dreyfus, G. B. Parrenin, F. Lemieux-Dudon, B. Durand, Geoffroy Masson-Delmotte, Valérie Jouzel, Jean Barnola, J.-M. Panno, L. Spahni, R. Tisserand, A. Siegenthaler, U. Leuenberger, M. |
author_facet |
Dreyfus, G. B. Parrenin, F. Lemieux-Dudon, B. Durand, Geoffroy Masson-Delmotte, Valérie Jouzel, Jean Barnola, J.-M. Panno, L. Spahni, R. Tisserand, A. Siegenthaler, U. Leuenberger, M. |
author_sort |
Dreyfus, G. B. |
title |
Anomalous flow below 2700 m in the EPICA Dome C ice core detected using d 18 O of atmospheric oxygen measurements |
title_short |
Anomalous flow below 2700 m in the EPICA Dome C ice core detected using d 18 O of atmospheric oxygen measurements |
title_full |
Anomalous flow below 2700 m in the EPICA Dome C ice core detected using d 18 O of atmospheric oxygen measurements |
title_fullStr |
Anomalous flow below 2700 m in the EPICA Dome C ice core detected using d 18 O of atmospheric oxygen measurements |
title_full_unstemmed |
Anomalous flow below 2700 m in the EPICA Dome C ice core detected using d 18 O of atmospheric oxygen measurements |
title_sort |
anomalous flow below 2700 m in the epica dome c ice core detected using d 18 o of atmospheric oxygen measurements |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.archives-ouvertes.fr/hal-00330721 https://hal.archives-ouvertes.fr/hal-00330721/document https://hal.archives-ouvertes.fr/hal-00330721/file/cpd-3-63-2007.pdf |
genre |
EPICA ice core |
genre_facet |
EPICA ice core |
op_source |
ISSN: 1814-9340 EISSN: 1814-9359 Climate of the Past Discussions https://hal.archives-ouvertes.fr/hal-00330721 Climate of the Past Discussions, European Geosciences Union (EGU), 2007, 3 (1), pp.63-93 |
op_relation |
hal-00330721 https://hal.archives-ouvertes.fr/hal-00330721 https://hal.archives-ouvertes.fr/hal-00330721/document https://hal.archives-ouvertes.fr/hal-00330721/file/cpd-3-63-2007.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1766402171174125568 |
spelling |
ftccsdartic:oai:HAL:hal-00330721v1 2023-05-15T16:06:16+02:00 Anomalous flow below 2700 m in the EPICA Dome C ice core detected using d 18 O of atmospheric oxygen measurements Dreyfus, G. B. Parrenin, F. Lemieux-Dudon, B. Durand, Geoffroy Masson-Delmotte, Valérie Jouzel, Jean Barnola, J.-M. Panno, L. Spahni, R. Tisserand, A. Siegenthaler, U. Leuenberger, M. Institut Pierre-Simon-Laplace (IPSL) École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS) Department of Geosciences Princeton Princeton University Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - 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 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) Niels Bohr Institute Copenhagen (NBI) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (KU)-University of Copenhagen = Københavns Universitet (KU) Physics Institute Environnements et Paléoenvironnements OCéaniques (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) 2007-01-16 https://hal.archives-ouvertes.fr/hal-00330721 https://hal.archives-ouvertes.fr/hal-00330721/document https://hal.archives-ouvertes.fr/hal-00330721/file/cpd-3-63-2007.pdf en eng HAL CCSD European Geosciences Union (EGU) hal-00330721 https://hal.archives-ouvertes.fr/hal-00330721 https://hal.archives-ouvertes.fr/hal-00330721/document https://hal.archives-ouvertes.fr/hal-00330721/file/cpd-3-63-2007.pdf info:eu-repo/semantics/OpenAccess ISSN: 1814-9340 EISSN: 1814-9359 Climate of the Past Discussions https://hal.archives-ouvertes.fr/hal-00330721 Climate of the Past Discussions, European Geosciences Union (EGU), 2007, 3 (1), pp.63-93 [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2007 ftccsdartic 2021-11-21T05:07:35Z International audience While there are no indications of mixing back to 800 000 years in the EPICA Dome C ice core record, comparison with marine sediment records shows significant differences in the timing and duration of events prior to stage 11 (~430 ka, thousand of years before 1950). A relationship between the isotopic composition of atmospheric oxygen (d 18 O of O 2 , noted d 18 O atm ) and daily northern hemisphere summer insolation has been observed for the youngest four climate cycles. Here we use this relationship with new d 18 O of O 2 measurements to show that anomalous flow in the bottom 500 m of the core distorts the duration of events by up to a factor of 2. By tuning d 18 O atm to orbital precession we derive a corrected thinning function and present a revised age scale for the interval corresponding to Marine Isotope Stages 11–20 in the EPICA Dome C ice core. Uncertainty in the phasing of d 18 O atm with respect to insolation variations in the precession band limits the accuracy of this new agescale to ±6 kyr (thousand of years). The previously reported ~30 kyr duration of interglacial stage 11 is unchanged. In contrast, the duration of stage 15.1 is reduced by a factor of 2, from 31 to 16 kyr. Article in Journal/Newspaper EPICA ice core Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |