The 8.2 ka event from Greenland ice cores
We present a collection of high-resolution chemistry and stable isotope records from the plateau of the Greenland ice cap during the cold event 8200 yr ago. Using a composite of four records, the cold event is observed as a 160.5 yr period during which decadal-mean isotopic values were below average...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/1198/ https://doi.org/10.1016/j.quascirev.2006.07.017 |
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ftnerc:oai:nora.nerc.ac.uk:1198 2023-05-15T16:25:17+02:00 The 8.2 ka event from Greenland ice cores Thomas, Elizabeth R. Wolff, Eric W. Mulvaney, Robert Steffensen, Jorgen P. Johnsen, Sigfus J. Arrowsmith, Carol White, James W.C. Vaughn, Bruce Popp, Trevor 2007 http://nora.nerc.ac.uk/id/eprint/1198/ https://doi.org/10.1016/j.quascirev.2006.07.017 unknown Elsevier Thomas, Elizabeth R. orcid:0000-0002-3010-6493 Wolff, Eric W.; Mulvaney, Robert orcid:0000-0002-5372-8148 Steffensen, Jorgen P.; Johnsen, Sigfus J.; Arrowsmith, Carol; White, James W.C.; Vaughn, Bruce; Popp, Trevor. 2007 The 8.2 ka event from Greenland ice cores. Quaternary Science Reviews, 26 (1-2). 70-81. https://doi.org/10.1016/j.quascirev.2006.07.017 <https://doi.org/10.1016/j.quascirev.2006.07.017> Glaciology Publication - Article PeerReviewed 2007 ftnerc https://doi.org/10.1016/j.quascirev.2006.07.017 2023-02-04T19:20:44Z We present a collection of high-resolution chemistry and stable isotope records from the plateau of the Greenland ice cap during the cold event 8200 yr ago. Using a composite of four records, the cold event is observed as a 160.5 yr period during which decadal-mean isotopic values were below average, within which there is a central event of 69 yr during which values were consistently more than one standard deviation below the average for the preceding period. Four cores in north, south, and central Greenland show differences at decadal and shorter timescales; it is not yet clear if this represents significant spatial differences in response. The results show clear evidence for colder temperatures and a decrease in snow-accumulation rate. However, the changes in chemical concentrations for the ions looked at here are small, suggesting only minor changes in atmospheric circulation for this event. Apart from the decrease in methane concentration, Greenland ice cores give only weak evidence for effects outside the North Atlantic region. Article in Journal/Newspaper Greenland Greenland ice cores Ice cap North Atlantic Natural Environment Research Council: NERC Open Research Archive Greenland Quaternary Science Reviews 26 1-2 70 81 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Glaciology |
spellingShingle |
Glaciology Thomas, Elizabeth R. Wolff, Eric W. Mulvaney, Robert Steffensen, Jorgen P. Johnsen, Sigfus J. Arrowsmith, Carol White, James W.C. Vaughn, Bruce Popp, Trevor The 8.2 ka event from Greenland ice cores |
topic_facet |
Glaciology |
description |
We present a collection of high-resolution chemistry and stable isotope records from the plateau of the Greenland ice cap during the cold event 8200 yr ago. Using a composite of four records, the cold event is observed as a 160.5 yr period during which decadal-mean isotopic values were below average, within which there is a central event of 69 yr during which values were consistently more than one standard deviation below the average for the preceding period. Four cores in north, south, and central Greenland show differences at decadal and shorter timescales; it is not yet clear if this represents significant spatial differences in response. The results show clear evidence for colder temperatures and a decrease in snow-accumulation rate. However, the changes in chemical concentrations for the ions looked at here are small, suggesting only minor changes in atmospheric circulation for this event. Apart from the decrease in methane concentration, Greenland ice cores give only weak evidence for effects outside the North Atlantic region. |
format |
Article in Journal/Newspaper |
author |
Thomas, Elizabeth R. Wolff, Eric W. Mulvaney, Robert Steffensen, Jorgen P. Johnsen, Sigfus J. Arrowsmith, Carol White, James W.C. Vaughn, Bruce Popp, Trevor |
author_facet |
Thomas, Elizabeth R. Wolff, Eric W. Mulvaney, Robert Steffensen, Jorgen P. Johnsen, Sigfus J. Arrowsmith, Carol White, James W.C. Vaughn, Bruce Popp, Trevor |
author_sort |
Thomas, Elizabeth R. |
title |
The 8.2 ka event from Greenland ice cores |
title_short |
The 8.2 ka event from Greenland ice cores |
title_full |
The 8.2 ka event from Greenland ice cores |
title_fullStr |
The 8.2 ka event from Greenland ice cores |
title_full_unstemmed |
The 8.2 ka event from Greenland ice cores |
title_sort |
8.2 ka event from greenland ice cores |
publisher |
Elsevier |
publishDate |
2007 |
url |
http://nora.nerc.ac.uk/id/eprint/1198/ https://doi.org/10.1016/j.quascirev.2006.07.017 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice cores Ice cap North Atlantic |
genre_facet |
Greenland Greenland ice cores Ice cap North Atlantic |
op_relation |
Thomas, Elizabeth R. orcid:0000-0002-3010-6493 Wolff, Eric W.; Mulvaney, Robert orcid:0000-0002-5372-8148 Steffensen, Jorgen P.; Johnsen, Sigfus J.; Arrowsmith, Carol; White, James W.C.; Vaughn, Bruce; Popp, Trevor. 2007 The 8.2 ka event from Greenland ice cores. Quaternary Science Reviews, 26 (1-2). 70-81. https://doi.org/10.1016/j.quascirev.2006.07.017 <https://doi.org/10.1016/j.quascirev.2006.07.017> |
op_doi |
https://doi.org/10.1016/j.quascirev.2006.07.017 |
container_title |
Quaternary Science Reviews |
container_volume |
26 |
container_issue |
1-2 |
container_start_page |
70 |
op_container_end_page |
81 |
_version_ |
1766014018010480640 |