Volcanic synchronisation between the EPICA Dome C and Vostok ice cores (Antarctica) 0–145 kyr BP
This study aims at refining the synchronisation between the EPICA Dome C (EDC) and Vostok ice cores in the time interval 0–145 kyr BP by using the volcanic signatures. 102 common volcanic events were identified by using continuous electrical conductivity (ECM), di-electrical profiling (DEP) and sulf...
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ftcopernicus:oai:publications.copernicus.org:cp13200 2023-05-15T13:36:36+02:00 Volcanic synchronisation between the EPICA Dome C and Vostok ice cores (Antarctica) 0–145 kyr BP Parrenin, F. Petit, J.-R. Masson-Delmotte, V. Wolff, E. Basile-Doelsch, I. Jouzel, J. Lipenkov, V. Rasmussen, S. O. Schwander, J. Severi, M. Udisti, R. Veres, D. Vinther, B. M. 2018-09-27 application/pdf https://doi.org/10.5194/cp-8-1031-2012 https://cp.copernicus.org/articles/8/1031/2012/ eng eng doi:10.5194/cp-8-1031-2012 https://cp.copernicus.org/articles/8/1031/2012/ eISSN: 1814-9332 Text 2018 ftcopernicus https://doi.org/10.5194/cp-8-1031-2012 2020-07-20T16:25:48Z This study aims at refining the synchronisation between the EPICA Dome C (EDC) and Vostok ice cores in the time interval 0–145 kyr BP by using the volcanic signatures. 102 common volcanic events were identified by using continuous electrical conductivity (ECM), di-electrical profiling (DEP) and sulfate measurements while trying to minimize the distortion of the glaciological chronologies. This is an update and a continuation of previous works performed over the 0–45 kyr interval that provided 56 tie points to the ice core chronologies (Udisti et al., 2004). This synchronisation will serve to establish Antarctic Ice Core Chronology 2012, the next synchronised Antarctic dating. A change of slope in the EDC-depth/Vostok-depth diagram is probably related to a change of accumulation regime as well as to a change of ice thickness upstream of the Lake Vostok, but we did not invoke any significant temporal change of surface accumulation at EDC relative to Vostok. No significant phase difference is detected between the EDC and Vostok isotopic records, but depth shifts between the Vostok 3G and 5G ice cores prevent from looking at this problem accurately. Three possible candidates for the Toba volcanic super-eruption ~73 kyr ago are suggested in the Vostok and EDC volcanic records. Neither the ECM, DEP nor the sulfate fingerprints for these 3 events are significantly larger than many others in the records. Text Antarc* Antarctic Antarctica EPICA ice core Copernicus Publications: E-Journals Antarctic Lake Vostok ENVELOPE(106.000,106.000,-77.500,-77.500) Climate of the Past 8 3 1031 1045 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
This study aims at refining the synchronisation between the EPICA Dome C (EDC) and Vostok ice cores in the time interval 0–145 kyr BP by using the volcanic signatures. 102 common volcanic events were identified by using continuous electrical conductivity (ECM), di-electrical profiling (DEP) and sulfate measurements while trying to minimize the distortion of the glaciological chronologies. This is an update and a continuation of previous works performed over the 0–45 kyr interval that provided 56 tie points to the ice core chronologies (Udisti et al., 2004). This synchronisation will serve to establish Antarctic Ice Core Chronology 2012, the next synchronised Antarctic dating. A change of slope in the EDC-depth/Vostok-depth diagram is probably related to a change of accumulation regime as well as to a change of ice thickness upstream of the Lake Vostok, but we did not invoke any significant temporal change of surface accumulation at EDC relative to Vostok. No significant phase difference is detected between the EDC and Vostok isotopic records, but depth shifts between the Vostok 3G and 5G ice cores prevent from looking at this problem accurately. Three possible candidates for the Toba volcanic super-eruption ~73 kyr ago are suggested in the Vostok and EDC volcanic records. Neither the ECM, DEP nor the sulfate fingerprints for these 3 events are significantly larger than many others in the records. |
format |
Text |
author |
Parrenin, F. Petit, J.-R. Masson-Delmotte, V. Wolff, E. Basile-Doelsch, I. Jouzel, J. Lipenkov, V. Rasmussen, S. O. Schwander, J. Severi, M. Udisti, R. Veres, D. Vinther, B. M. |
spellingShingle |
Parrenin, F. Petit, J.-R. Masson-Delmotte, V. Wolff, E. Basile-Doelsch, I. Jouzel, J. Lipenkov, V. Rasmussen, S. O. Schwander, J. Severi, M. Udisti, R. Veres, D. Vinther, B. M. Volcanic synchronisation between the EPICA Dome C and Vostok ice cores (Antarctica) 0–145 kyr BP |
author_facet |
Parrenin, F. Petit, J.-R. Masson-Delmotte, V. Wolff, E. Basile-Doelsch, I. Jouzel, J. Lipenkov, V. Rasmussen, S. O. Schwander, J. Severi, M. Udisti, R. Veres, D. Vinther, B. M. |
author_sort |
Parrenin, F. |
title |
Volcanic synchronisation between the EPICA Dome C and Vostok ice cores (Antarctica) 0–145 kyr BP |
title_short |
Volcanic synchronisation between the EPICA Dome C and Vostok ice cores (Antarctica) 0–145 kyr BP |
title_full |
Volcanic synchronisation between the EPICA Dome C and Vostok ice cores (Antarctica) 0–145 kyr BP |
title_fullStr |
Volcanic synchronisation between the EPICA Dome C and Vostok ice cores (Antarctica) 0–145 kyr BP |
title_full_unstemmed |
Volcanic synchronisation between the EPICA Dome C and Vostok ice cores (Antarctica) 0–145 kyr BP |
title_sort |
volcanic synchronisation between the epica dome c and vostok ice cores (antarctica) 0–145 kyr bp |
publishDate |
2018 |
url |
https://doi.org/10.5194/cp-8-1031-2012 https://cp.copernicus.org/articles/8/1031/2012/ |
long_lat |
ENVELOPE(106.000,106.000,-77.500,-77.500) |
geographic |
Antarctic Lake Vostok |
geographic_facet |
Antarctic Lake Vostok |
genre |
Antarc* Antarctic Antarctica EPICA ice core |
genre_facet |
Antarc* Antarctic Antarctica EPICA ice core |
op_source |
eISSN: 1814-9332 |
op_relation |
doi:10.5194/cp-8-1031-2012 https://cp.copernicus.org/articles/8/1031/2012/ |
op_doi |
https://doi.org/10.5194/cp-8-1031-2012 |
container_title |
Climate of the Past |
container_volume |
8 |
container_issue |
3 |
container_start_page |
1031 |
op_container_end_page |
1045 |
_version_ |
1766081200086056960 |