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...
Published in: | Climate of the Past |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2020
|
Subjects: | |
Online Access: | https://doi.org/10.5194/cp-16-2359-2020 https://doaj.org/article/f64c4eeb6a314787a8d33d2519b2ada8 |
id |
ftdoajarticles:oai:doaj.org/article:f64c4eeb6a314787a8d33d2519b2ada8 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:f64c4eeb6a314787a8d33d2519b2ada8 2023-05-15T16:03:41+02:00 A first chronology for the East Greenland Ice-core Project (EGRIP) over the Holocene and last glacial termination S. Mojtabavi F. Wilhelms E. Cook S. M. Davies G. Sinnl M. Skov Jensen D. Dahl-Jensen A. Svensson B. M. Vinther S. Kipfstuhl G. Jones N. B. Karlsson S. H. Faria V. Gkinis H. A. Kjær T. Erhardt S. M. P. Berben K. H. Nisancioglu I. Koldtoft S. O. Rasmussen 2020-11-01T00:00:00Z https://doi.org/10.5194/cp-16-2359-2020 https://doaj.org/article/f64c4eeb6a314787a8d33d2519b2ada8 EN eng Copernicus Publications https://cp.copernicus.org/articles/16/2359/2020/cp-16-2359-2020.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-16-2359-2020 1814-9324 1814-9332 https://doaj.org/article/f64c4eeb6a314787a8d33d2519b2ada8 Climate of the Past, Vol 16, Pp 2359-2380 (2020) Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 article 2020 ftdoajarticles https://doi.org/10.5194/cp-16-2359-2020 2022-12-31T13:15:18Z 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. 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 Directory of Open Access Journals: DOAJ Articles Greenland Climate of the Past 16 6 2359 2380 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
spellingShingle |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 S. Mojtabavi F. Wilhelms E. Cook S. M. Davies G. Sinnl M. Skov Jensen D. Dahl-Jensen A. Svensson B. M. Vinther S. Kipfstuhl G. Jones N. B. Karlsson S. H. Faria V. Gkinis H. A. Kjær T. Erhardt S. M. P. Berben K. H. Nisancioglu I. Koldtoft S. O. Rasmussen A first chronology for the East Greenland Ice-core Project (EGRIP) over the Holocene and last glacial termination |
topic_facet |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
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. |
format |
Article in Journal/Newspaper |
author |
S. Mojtabavi F. Wilhelms E. Cook S. M. Davies G. Sinnl M. Skov Jensen D. Dahl-Jensen A. Svensson B. M. Vinther S. Kipfstuhl G. Jones N. B. Karlsson S. H. Faria V. Gkinis H. A. Kjær T. Erhardt S. M. P. Berben K. H. Nisancioglu I. Koldtoft S. O. Rasmussen |
author_facet |
S. Mojtabavi F. Wilhelms E. Cook S. M. Davies G. Sinnl M. Skov Jensen D. Dahl-Jensen A. Svensson B. M. Vinther S. Kipfstuhl G. Jones N. B. Karlsson S. H. Faria V. Gkinis H. A. Kjær T. Erhardt S. M. P. Berben K. H. Nisancioglu I. Koldtoft S. O. Rasmussen |
author_sort |
S. Mojtabavi |
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://doi.org/10.5194/cp-16-2359-2020 https://doaj.org/article/f64c4eeb6a314787a8d33d2519b2ada8 |
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, Vol 16, Pp 2359-2380 (2020) |
op_relation |
https://cp.copernicus.org/articles/16/2359/2020/cp-16-2359-2020.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-16-2359-2020 1814-9324 1814-9332 https://doaj.org/article/f64c4eeb6a314787a8d33d2519b2ada8 |
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 |
_version_ |
1766399379245105152 |