Synchronization of the NGRIP, GRIP, and GISP2 ice cores
We here present a synchronization of the NGRIP, GRIP, and GISP2 ice cores based mainly on volcanic events over the period 14.9-32.45 ka b2k (before AD 2000), corresponding to Marine Isotope Stage 2 (MIS 2) and the end of MIS 3. The matching provides a basis for applying the recent NGRIP-based Greenl...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.786240 2023-05-15T16:19:48+02:00 Synchronization of the NGRIP, GRIP, and GISP2 ice cores Rasmussen, Sune Olander Seierstad, Inger K Andersen, Katrine K Bigler, Matthias Dahl-Jensen, Dorthe Johnsen, Sigfús Jóhann MEDIAN LATITUDE: 73.935000 * MEDIAN LONGITUDE: -40.265000 * SOUTH-BOUND LATITUDE: 72.570000 * WEST-BOUND LONGITUDE: -42.320000 * NORTH-BOUND LATITUDE: 75.100000 * EAST-BOUND LONGITUDE: -37.620000 * DATE/TIME START: 1989-06-01T00:00:00 * DATE/TIME END: 1996-07-01T00:00:00 2008-07-18 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.786240 https://doi.org/10.1594/PANGAEA.786240 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.786240 https://doi.org/10.1594/PANGAEA.786240 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Rasmussen, Sune Olander; Seierstad, Inger K; Andersen, Katrine K; Bigler, Matthias; Dahl-Jensen, Dorthe; Johnsen, Sigfús Jóhann (2008): Synchronization of the NGRIP, GRIP, and GISP2 ice cores across MIS 2 and palaeoclimatic implications. Quaternary Science Reviews, 27(1-2), 18-28, https://doi.org/10.1016/j.quascirev.2007.01.016 Greenland Ice Core Projects GRIP/GISP/NGRIP Dataset 2008 ftpangaea https://doi.org/10.1594/PANGAEA.786240 https://doi.org/10.1016/j.quascirev.2007.01.016 2023-01-20T07:32:37Z We here present a synchronization of the NGRIP, GRIP, and GISP2 ice cores based mainly on volcanic events over the period 14.9-32.45 ka b2k (before AD 2000), corresponding to Marine Isotope Stage 2 (MIS 2) and the end of MIS 3. The matching provides a basis for applying the recent NGRIP-based Greenland Ice Core Chronology 2005 (GICC05) time scale to the GRIP and GISP2 ice cores, thereby making it possible to compare the synchronized palaeoclimate profiles of the cores in detail and to identify relative accumulation differences between the cores. Based on the matching, a period of anomalous high accumulation rates in the GISP2 ice core is detected within the period 16.5-18.3 ka b2k. The d18O and [Ca2+] profiles of the three cores are presented on the common GICC05 time scale and generally show excellent agreement across the stadial-interstadial transitions and across the two characteristic dust events in Greenland Stadial 3. However, large differences between the d18O and [Ca2+] profiles of the three cores are seen in the same period as the 7-9% increase in the GISP2 accumulation rate. We conclude that changes of the atmospheric circulation are likely to have occurred in this period, altering the spatial gradients in Greenland and resulting in larger variations between the records. Dataset GISP Greenland Greenland ice core GRIP ice core NGRIP PANGAEA - Data Publisher for Earth & Environmental Science Greenland ENVELOPE(-42.320000,-37.620000,75.100000,72.570000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Greenland Ice Core Projects GRIP/GISP/NGRIP |
spellingShingle |
Greenland Ice Core Projects GRIP/GISP/NGRIP Rasmussen, Sune Olander Seierstad, Inger K Andersen, Katrine K Bigler, Matthias Dahl-Jensen, Dorthe Johnsen, Sigfús Jóhann Synchronization of the NGRIP, GRIP, and GISP2 ice cores |
topic_facet |
Greenland Ice Core Projects GRIP/GISP/NGRIP |
description |
We here present a synchronization of the NGRIP, GRIP, and GISP2 ice cores based mainly on volcanic events over the period 14.9-32.45 ka b2k (before AD 2000), corresponding to Marine Isotope Stage 2 (MIS 2) and the end of MIS 3. The matching provides a basis for applying the recent NGRIP-based Greenland Ice Core Chronology 2005 (GICC05) time scale to the GRIP and GISP2 ice cores, thereby making it possible to compare the synchronized palaeoclimate profiles of the cores in detail and to identify relative accumulation differences between the cores. Based on the matching, a period of anomalous high accumulation rates in the GISP2 ice core is detected within the period 16.5-18.3 ka b2k. The d18O and [Ca2+] profiles of the three cores are presented on the common GICC05 time scale and generally show excellent agreement across the stadial-interstadial transitions and across the two characteristic dust events in Greenland Stadial 3. However, large differences between the d18O and [Ca2+] profiles of the three cores are seen in the same period as the 7-9% increase in the GISP2 accumulation rate. We conclude that changes of the atmospheric circulation are likely to have occurred in this period, altering the spatial gradients in Greenland and resulting in larger variations between the records. |
format |
Dataset |
author |
Rasmussen, Sune Olander Seierstad, Inger K Andersen, Katrine K Bigler, Matthias Dahl-Jensen, Dorthe Johnsen, Sigfús Jóhann |
author_facet |
Rasmussen, Sune Olander Seierstad, Inger K Andersen, Katrine K Bigler, Matthias Dahl-Jensen, Dorthe Johnsen, Sigfús Jóhann |
author_sort |
Rasmussen, Sune Olander |
title |
Synchronization of the NGRIP, GRIP, and GISP2 ice cores |
title_short |
Synchronization of the NGRIP, GRIP, and GISP2 ice cores |
title_full |
Synchronization of the NGRIP, GRIP, and GISP2 ice cores |
title_fullStr |
Synchronization of the NGRIP, GRIP, and GISP2 ice cores |
title_full_unstemmed |
Synchronization of the NGRIP, GRIP, and GISP2 ice cores |
title_sort |
synchronization of the ngrip, grip, and gisp2 ice cores |
publisher |
PANGAEA |
publishDate |
2008 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.786240 https://doi.org/10.1594/PANGAEA.786240 |
op_coverage |
MEDIAN LATITUDE: 73.935000 * MEDIAN LONGITUDE: -40.265000 * SOUTH-BOUND LATITUDE: 72.570000 * WEST-BOUND LONGITUDE: -42.320000 * NORTH-BOUND LATITUDE: 75.100000 * EAST-BOUND LONGITUDE: -37.620000 * DATE/TIME START: 1989-06-01T00:00:00 * DATE/TIME END: 1996-07-01T00:00:00 |
long_lat |
ENVELOPE(-42.320000,-37.620000,75.100000,72.570000) |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
GISP Greenland Greenland ice core GRIP ice core NGRIP |
genre_facet |
GISP Greenland Greenland ice core GRIP ice core NGRIP |
op_source |
Supplement to: Rasmussen, Sune Olander; Seierstad, Inger K; Andersen, Katrine K; Bigler, Matthias; Dahl-Jensen, Dorthe; Johnsen, Sigfús Jóhann (2008): Synchronization of the NGRIP, GRIP, and GISP2 ice cores across MIS 2 and palaeoclimatic implications. Quaternary Science Reviews, 27(1-2), 18-28, https://doi.org/10.1016/j.quascirev.2007.01.016 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.786240 https://doi.org/10.1594/PANGAEA.786240 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.786240 https://doi.org/10.1016/j.quascirev.2007.01.016 |
_version_ |
1766006252635160576 |