A first chronology for the East Greenland Ice-core Project (EGRIP) over the Holocene and last glacial termination
This paper provides the first chronology for the deep ice core from the East Greenland Ice-core Project (EGRIP) over the Holocene and the late last glacial period. We rely mainly on volcanic events and common peak patterns recorded by dielectric profiling (DEP) and electrical conductivity measuremen...
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Online Access: | https://hdl.handle.net/11250/2761482 https://doi.org/10.5194/cp-16-2359-2020 |
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ftunivbergen:oai:bora.uib.no:11250/2761482 2023-05-15T16:03:40+02:00 A first chronology for the East Greenland Ice-core Project (EGRIP) over the Holocene and last glacial termination Mojtabavi, Seyedhamidreza Wilhelms, Frank Cook, Eliza Davies, Siwan M. Sinnl, Giulia Skov Jensen, Mathias Dahl-Jensen, Dorthe Svensson, Anders Vinther, Bo Kipfstuhl, Sepp Jones, Gwydion Karlsson, Nanna B. Henrique Faria, Sergio Gkinis, Vasileios Astrid Kjær, Helle Erhardt, Tobias Berben, Sarah Miche Patricia Nisancioglu, Kerim Hestnes Koldtoft, Iben Olander Rasmussen, Sune 2020 application/pdf https://hdl.handle.net/11250/2761482 https://doi.org/10.5194/cp-16-2359-2020 eng eng Copernicus Publications urn:issn:1814-9324 https://hdl.handle.net/11250/2761482 https://doi.org/10.5194/cp-16-2359-2020 cristin:1873158 Climate of the Past. 2020, 16 (6), 2359-2380. Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright Author(s) 2020. Climate of the Past 2359-2380 16 6 Journal article Peer reviewed 2020 ftunivbergen https://doi.org/10.5194/cp-16-2359-2020 2023-03-14T17:41:29Z This paper provides the first chronology for the deep ice core from the East Greenland Ice-core Project (EGRIP) over the Holocene and the late last glacial period. We rely mainly on volcanic events and common peak patterns recorded by dielectric profiling (DEP) and electrical conductivity measurement (ECM) for the synchronization between the EGRIP, North Greenland Eemian Ice Drilling (NEEM) and North Greenland Ice Core Project (NGRIP) ice cores in Greenland. We transfer the annual-layer-counted Greenland Ice Core Chronology 2005 (GICC05) from the NGRIP core to the EGRIP ice core by means of 381 match points, typically spaced less than 50 years apart. The NEEM ice core has previously been dated in a similar way and is only included to support the match-point identification. We name our EGRIP timescale GICC05-EGRIP-1. Over the uppermost 1383.84 m, we establish a depth–age relationship dating back to 14 967 years b2k (years before the year 2000 CE). Tephra horizons provide an independent validation of our match points. In addition, we compare the ratio of the annual layer thickness between ice cores in between the match points to assess our results in view of the different ice-flow patterns and accumulation regimes of the different periods and geographical regions. For the next years, this initial timescale will be the basis for climatic reconstructions from EGRIP high-resolution proxy data sets, e.g. stable water isotopes, chemical impurity or dust records. publishedVersion Article in Journal/Newspaper East Greenland East Greenland Ice-core Project Greenland Greenland ice core Greenland Ice core Project ice core NGRIP North Greenland North Greenland Ice Core Project University of Bergen: Bergen Open Research Archive (BORA-UiB) Greenland Climate of the Past 16 6 2359 2380 |
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Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
description |
This paper provides the first chronology for the deep ice core from the East Greenland Ice-core Project (EGRIP) over the Holocene and the late last glacial period. We rely mainly on volcanic events and common peak patterns recorded by dielectric profiling (DEP) and electrical conductivity measurement (ECM) for the synchronization between the EGRIP, North Greenland Eemian Ice Drilling (NEEM) and North Greenland Ice Core Project (NGRIP) ice cores in Greenland. We transfer the annual-layer-counted Greenland Ice Core Chronology 2005 (GICC05) from the NGRIP core to the EGRIP ice core by means of 381 match points, typically spaced less than 50 years apart. The NEEM ice core has previously been dated in a similar way and is only included to support the match-point identification. We name our EGRIP timescale GICC05-EGRIP-1. Over the uppermost 1383.84 m, we establish a depth–age relationship dating back to 14 967 years b2k (years before the year 2000 CE). Tephra horizons provide an independent validation of our match points. In addition, we compare the ratio of the annual layer thickness between ice cores in between the match points to assess our results in view of the different ice-flow patterns and accumulation regimes of the different periods and geographical regions. For the next years, this initial timescale will be the basis for climatic reconstructions from EGRIP high-resolution proxy data sets, e.g. stable water isotopes, chemical impurity or dust records. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Mojtabavi, Seyedhamidreza Wilhelms, Frank Cook, Eliza Davies, Siwan M. Sinnl, Giulia Skov Jensen, Mathias Dahl-Jensen, Dorthe Svensson, Anders Vinther, Bo Kipfstuhl, Sepp Jones, Gwydion Karlsson, Nanna B. Henrique Faria, Sergio Gkinis, Vasileios Astrid Kjær, Helle Erhardt, Tobias Berben, Sarah Miche Patricia Nisancioglu, Kerim Hestnes Koldtoft, Iben Olander Rasmussen, Sune |
spellingShingle |
Mojtabavi, Seyedhamidreza Wilhelms, Frank Cook, Eliza Davies, Siwan M. Sinnl, Giulia Skov Jensen, Mathias Dahl-Jensen, Dorthe Svensson, Anders Vinther, Bo Kipfstuhl, Sepp Jones, Gwydion Karlsson, Nanna B. Henrique Faria, Sergio Gkinis, Vasileios Astrid Kjær, Helle Erhardt, Tobias Berben, Sarah Miche Patricia Nisancioglu, Kerim Hestnes Koldtoft, Iben Olander Rasmussen, Sune A first chronology for the East Greenland Ice-core Project (EGRIP) over the Holocene and last glacial termination |
author_facet |
Mojtabavi, Seyedhamidreza Wilhelms, Frank Cook, Eliza Davies, Siwan M. Sinnl, Giulia Skov Jensen, Mathias Dahl-Jensen, Dorthe Svensson, Anders Vinther, Bo Kipfstuhl, Sepp Jones, Gwydion Karlsson, Nanna B. Henrique Faria, Sergio Gkinis, Vasileios Astrid Kjær, Helle Erhardt, Tobias Berben, Sarah Miche Patricia Nisancioglu, Kerim Hestnes Koldtoft, Iben Olander Rasmussen, Sune |
author_sort |
Mojtabavi, Seyedhamidreza |
title |
A first chronology for the East Greenland Ice-core Project (EGRIP) over the Holocene and last glacial termination |
title_short |
A first chronology for the East Greenland Ice-core Project (EGRIP) over the Holocene and last glacial termination |
title_full |
A first chronology for the East Greenland Ice-core Project (EGRIP) over the Holocene and last glacial termination |
title_fullStr |
A first chronology for the East Greenland Ice-core Project (EGRIP) over the Holocene and last glacial termination |
title_full_unstemmed |
A first chronology for the East Greenland Ice-core Project (EGRIP) over the Holocene and last glacial termination |
title_sort |
first chronology for the east greenland ice-core project (egrip) over the holocene and last glacial termination |
publisher |
Copernicus Publications |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2761482 https://doi.org/10.5194/cp-16-2359-2020 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
East Greenland East Greenland Ice-core Project Greenland Greenland ice core Greenland Ice core Project ice core NGRIP North Greenland North Greenland Ice Core Project |
genre_facet |
East Greenland East Greenland Ice-core Project Greenland Greenland ice core Greenland Ice core Project ice core NGRIP North Greenland North Greenland Ice Core Project |
op_source |
Climate of the Past 2359-2380 16 6 |
op_relation |
urn:issn:1814-9324 https://hdl.handle.net/11250/2761482 https://doi.org/10.5194/cp-16-2359-2020 cristin:1873158 Climate of the Past. 2020, 16 (6), 2359-2380. |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright Author(s) 2020. |
op_doi |
https://doi.org/10.5194/cp-16-2359-2020 |
container_title |
Climate of the Past |
container_volume |
16 |
container_issue |
6 |
container_start_page |
2359 |
op_container_end_page |
2380 |
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1766399367167606784 |