Environmental change in eastern Greenland during the last 1300 years: evidence from foraminifera and lithofacies in Nansen Fjord, 68°N
Lithofacies and benthic foraminiferal analyses of two sediment cores (BS1191-K13B and K14) from Nansen Fjord, eastern Greenland, show evidence of changing oceanographic and sea-ice conditions from AD 730 to the present. Radiocarbon dates on foraminifera provide century-scale resolution of events, bu...
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Online Access: | http://dx.doi.org/10.1177/095968369600600205 http://journals.sagepub.com/doi/pdf/10.1177/095968369600600205 |
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crsagepubl:10.1177/095968369600600205 2024-09-15T18:09:04+00:00 Environmental change in eastern Greenland during the last 1300 years: evidence from foraminifera and lithofacies in Nansen Fjord, 68°N Jennings, Anne E. Weiner, Nancy J. 1996 http://dx.doi.org/10.1177/095968369600600205 http://journals.sagepub.com/doi/pdf/10.1177/095968369600600205 en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 6, issue 2, page 179-191 ISSN 0959-6836 1477-0911 journal-article 1996 crsagepubl https://doi.org/10.1177/095968369600600205 2024-07-29T04:25:35Z Lithofacies and benthic foraminiferal analyses of two sediment cores (BS1191-K13B and K14) from Nansen Fjord, eastern Greenland, show evidence of changing oceanographic and sea-ice conditions from AD 730 to the present. Radiocarbon dates on foraminifera provide century-scale resolution of events, but the frequency of events between dated levels can be estimated with a resolution of approximately 4 to 9 years per centimetre of core. Unstratified glacial-marine diamicton with a calcareous foraminiferal fauna gives way to interstratified diamicton and mud with a predominantly agglutinated foraminifera. The diamictons represent periods of season ally open water with strong continuous iceberg rafting. Mud layers were deposited during intervals of prolonged sea-ice cover. The evidence suggests that the climate in the region of Nansen Fjord was warmer and more stable than today during a 'Medieval Warm Period' between c. AD 730 to 1100. Variable climatic conditions with frequent intervals of severe cold characterize a 'Little Ice Age' type interval from c. AD 1630 to 1900. An earlier cold interval culminated c. AD 1370. The record is similar to the 1000-yr-long Icelandic sea-ice record and, to a lesser extent, to the central Greenland Crete ice-core record. Article in Journal/Newspaper Greenland ice core Nansen fjord Sea ice SAGE Publications The Holocene 6 2 179 191 |
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crsagepubl |
language |
English |
description |
Lithofacies and benthic foraminiferal analyses of two sediment cores (BS1191-K13B and K14) from Nansen Fjord, eastern Greenland, show evidence of changing oceanographic and sea-ice conditions from AD 730 to the present. Radiocarbon dates on foraminifera provide century-scale resolution of events, but the frequency of events between dated levels can be estimated with a resolution of approximately 4 to 9 years per centimetre of core. Unstratified glacial-marine diamicton with a calcareous foraminiferal fauna gives way to interstratified diamicton and mud with a predominantly agglutinated foraminifera. The diamictons represent periods of season ally open water with strong continuous iceberg rafting. Mud layers were deposited during intervals of prolonged sea-ice cover. The evidence suggests that the climate in the region of Nansen Fjord was warmer and more stable than today during a 'Medieval Warm Period' between c. AD 730 to 1100. Variable climatic conditions with frequent intervals of severe cold characterize a 'Little Ice Age' type interval from c. AD 1630 to 1900. An earlier cold interval culminated c. AD 1370. The record is similar to the 1000-yr-long Icelandic sea-ice record and, to a lesser extent, to the central Greenland Crete ice-core record. |
format |
Article in Journal/Newspaper |
author |
Jennings, Anne E. Weiner, Nancy J. |
spellingShingle |
Jennings, Anne E. Weiner, Nancy J. Environmental change in eastern Greenland during the last 1300 years: evidence from foraminifera and lithofacies in Nansen Fjord, 68°N |
author_facet |
Jennings, Anne E. Weiner, Nancy J. |
author_sort |
Jennings, Anne E. |
title |
Environmental change in eastern Greenland during the last 1300 years: evidence from foraminifera and lithofacies in Nansen Fjord, 68°N |
title_short |
Environmental change in eastern Greenland during the last 1300 years: evidence from foraminifera and lithofacies in Nansen Fjord, 68°N |
title_full |
Environmental change in eastern Greenland during the last 1300 years: evidence from foraminifera and lithofacies in Nansen Fjord, 68°N |
title_fullStr |
Environmental change in eastern Greenland during the last 1300 years: evidence from foraminifera and lithofacies in Nansen Fjord, 68°N |
title_full_unstemmed |
Environmental change in eastern Greenland during the last 1300 years: evidence from foraminifera and lithofacies in Nansen Fjord, 68°N |
title_sort |
environmental change in eastern greenland during the last 1300 years: evidence from foraminifera and lithofacies in nansen fjord, 68°n |
publisher |
SAGE Publications |
publishDate |
1996 |
url |
http://dx.doi.org/10.1177/095968369600600205 http://journals.sagepub.com/doi/pdf/10.1177/095968369600600205 |
genre |
Greenland ice core Nansen fjord Sea ice |
genre_facet |
Greenland ice core Nansen fjord Sea ice |
op_source |
The Holocene volume 6, issue 2, page 179-191 ISSN 0959-6836 1477-0911 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1177/095968369600600205 |
container_title |
The Holocene |
container_volume |
6 |
container_issue |
2 |
container_start_page |
179 |
op_container_end_page |
191 |
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1810446457201754112 |