Volcanic synchronization of Dome Fuji and Dome C Antarctic deep ice cores over the past 216 kyr
International audience Two deep ice cores, Dome Fuji (DF) and EPICA Dome C (EDC), drilled at remote dome summits in Antarc-tica, were volcanically synchronized to improve our understanding of their chronologies. Within the past 216 kyr, 1401 volcanic tie points have been identified. DFO2006 is the c...
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Online Access: | https://hal.science/hal-02395990 https://hal.science/hal-02395990/document https://hal.science/hal-02395990/file/cp-11-1395-2015.pdf https://doi.org/10.5194/cp-11-1395-2015 |
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ftunivnantes:oai:HAL:hal-02395990v1 2023-05-15T13:38:06+02:00 Volcanic synchronization of Dome Fuji and Dome C Antarctic deep ice cores over the past 216 kyr Fujita, S. Parrenin, Frédéric Severi, M. Motoyama, H. Wolff, E. National Institute of Polar Research Tokyo (NiPR) Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) Department of Chemistry Department of Earth Sciences Cambridge, UK University of Cambridge UK (CAM) 2015 https://hal.science/hal-02395990 https://hal.science/hal-02395990/document https://hal.science/hal-02395990/file/cp-11-1395-2015.pdf https://doi.org/10.5194/cp-11-1395-2015 en eng HAL CCSD European Geosciences Union (EGU) info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-11-1395-2015 hal-02395990 https://hal.science/hal-02395990 https://hal.science/hal-02395990/document https://hal.science/hal-02395990/file/cp-11-1395-2015.pdf doi:10.5194/cp-11-1395-2015 http://creativecommons.org/licenses/by-nc/ info:eu-repo/semantics/OpenAccess CC-BY-NC ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-02395990 Climate of the Past, 2015, 11 (10), pp.1395-1416. ⟨10.5194/cp-11-1395-2015⟩ [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology info:eu-repo/semantics/article Journal articles 2015 ftunivnantes https://doi.org/10.5194/cp-11-1395-2015 2023-03-01T03:06:03Z International audience Two deep ice cores, Dome Fuji (DF) and EPICA Dome C (EDC), drilled at remote dome summits in Antarc-tica, were volcanically synchronized to improve our understanding of their chronologies. Within the past 216 kyr, 1401 volcanic tie points have been identified. DFO2006 is the chronology for the DF core that strictly follows O 2 / N 2 age constraints with interpolation using an ice flow model. AICC2012 is the chronology for five cores, including the EDC core, and is characterized by glaciological approaches combining ice flow modelling with various age markers. A precise comparison between the two chronologies was performed. The age differences between them are within 2 kyr, except at Marine Isotope Stage (MIS) 5. DFO2006 gives ages older than AICC2012, with peak values of 4.5 and 3.1 kyr at MIS 5d and MIS 5b, respectively. Accordingly, the ratios of duration (AICC2012 / DFO2006) range between 1.4 at MIS 5e and 0.7 at MIS 5a. When making a comparison with accurately dated speleothem records, the age of DFO2006 agrees well at MIS 5d, while the age of AICC2012 agrees well at MIS 5b, supporting their accuracy at these stages. In addition , we found that glaciological approaches tend to give chronologies with younger ages and with longer durations than age markers suggest at MIS 5d-6. Therefore, we hypothesize that the causes of the DFO2006-AICC2012 age differences at MIS 5 are (i) overestimation in surface mass balance at around MIS 5d-6 in the glaciological approach and (ii) an error in one of the O 2 / N 2 age constraints by ∼ 3 kyr at MIS 5b. Overall, we improved our knowledge of the timing and duration of climatic stages at MIS 5. This new understanding will be incorporated into the production of the next common age scale. Additionally, we found that the deu-terium signals of ice, δD ice , at DF tends to lead the one at EDC, with the DF lead being more pronounced during cold periods. The lead of DF is by +710 years (maximum) at MIS 5d, −230 years (minimum) at MIS 7a and +60 to +126 years ... Article in Journal/Newspaper Antarc* Antarctic EPICA Université de Nantes: HAL-UNIV-NANTES Antarctic Dome Fuji ENVELOPE(39.700,39.700,-77.317,-77.317) Climate of the Past 11 10 1395 1416 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
spellingShingle |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology Fujita, S. Parrenin, Frédéric Severi, M. Motoyama, H. Wolff, E. Volcanic synchronization of Dome Fuji and Dome C Antarctic deep ice cores over the past 216 kyr |
topic_facet |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
description |
International audience Two deep ice cores, Dome Fuji (DF) and EPICA Dome C (EDC), drilled at remote dome summits in Antarc-tica, were volcanically synchronized to improve our understanding of their chronologies. Within the past 216 kyr, 1401 volcanic tie points have been identified. DFO2006 is the chronology for the DF core that strictly follows O 2 / N 2 age constraints with interpolation using an ice flow model. AICC2012 is the chronology for five cores, including the EDC core, and is characterized by glaciological approaches combining ice flow modelling with various age markers. A precise comparison between the two chronologies was performed. The age differences between them are within 2 kyr, except at Marine Isotope Stage (MIS) 5. DFO2006 gives ages older than AICC2012, with peak values of 4.5 and 3.1 kyr at MIS 5d and MIS 5b, respectively. Accordingly, the ratios of duration (AICC2012 / DFO2006) range between 1.4 at MIS 5e and 0.7 at MIS 5a. When making a comparison with accurately dated speleothem records, the age of DFO2006 agrees well at MIS 5d, while the age of AICC2012 agrees well at MIS 5b, supporting their accuracy at these stages. In addition , we found that glaciological approaches tend to give chronologies with younger ages and with longer durations than age markers suggest at MIS 5d-6. Therefore, we hypothesize that the causes of the DFO2006-AICC2012 age differences at MIS 5 are (i) overestimation in surface mass balance at around MIS 5d-6 in the glaciological approach and (ii) an error in one of the O 2 / N 2 age constraints by ∼ 3 kyr at MIS 5b. Overall, we improved our knowledge of the timing and duration of climatic stages at MIS 5. This new understanding will be incorporated into the production of the next common age scale. Additionally, we found that the deu-terium signals of ice, δD ice , at DF tends to lead the one at EDC, with the DF lead being more pronounced during cold periods. The lead of DF is by +710 years (maximum) at MIS 5d, −230 years (minimum) at MIS 7a and +60 to +126 years ... |
author2 |
National Institute of Polar Research Tokyo (NiPR) Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) Department of Chemistry Department of Earth Sciences Cambridge, UK University of Cambridge UK (CAM) |
format |
Article in Journal/Newspaper |
author |
Fujita, S. Parrenin, Frédéric Severi, M. Motoyama, H. Wolff, E. |
author_facet |
Fujita, S. Parrenin, Frédéric Severi, M. Motoyama, H. Wolff, E. |
author_sort |
Fujita, S. |
title |
Volcanic synchronization of Dome Fuji and Dome C Antarctic deep ice cores over the past 216 kyr |
title_short |
Volcanic synchronization of Dome Fuji and Dome C Antarctic deep ice cores over the past 216 kyr |
title_full |
Volcanic synchronization of Dome Fuji and Dome C Antarctic deep ice cores over the past 216 kyr |
title_fullStr |
Volcanic synchronization of Dome Fuji and Dome C Antarctic deep ice cores over the past 216 kyr |
title_full_unstemmed |
Volcanic synchronization of Dome Fuji and Dome C Antarctic deep ice cores over the past 216 kyr |
title_sort |
volcanic synchronization of dome fuji and dome c antarctic deep ice cores over the past 216 kyr |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.science/hal-02395990 https://hal.science/hal-02395990/document https://hal.science/hal-02395990/file/cp-11-1395-2015.pdf https://doi.org/10.5194/cp-11-1395-2015 |
long_lat |
ENVELOPE(39.700,39.700,-77.317,-77.317) |
geographic |
Antarctic Dome Fuji |
geographic_facet |
Antarctic Dome Fuji |
genre |
Antarc* Antarctic EPICA |
genre_facet |
Antarc* Antarctic EPICA |
op_source |
ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-02395990 Climate of the Past, 2015, 11 (10), pp.1395-1416. ⟨10.5194/cp-11-1395-2015⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-11-1395-2015 hal-02395990 https://hal.science/hal-02395990 https://hal.science/hal-02395990/document https://hal.science/hal-02395990/file/cp-11-1395-2015.pdf doi:10.5194/cp-11-1395-2015 |
op_rights |
http://creativecommons.org/licenses/by-nc/ info:eu-repo/semantics/OpenAccess |
op_rightsnorm |
CC-BY-NC |
op_doi |
https://doi.org/10.5194/cp-11-1395-2015 |
container_title |
Climate of the Past |
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11 |
container_issue |
10 |
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