Palynological Evidence of Climatic and Oceanographic Changes in the North Sea during the Last Deglaciation
Palynological analyses performed on cores from the Norwegian Channel (Troll 8903) led to reconstruction of the late-glacial variations in sea-surface conditions using dinoflagellate cyst data and permitted direct correlation with the vegetation history of northwestern Europe derived from pollen asse...
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Cambridge University Press (CUP)
1998
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Online Access: | http://dx.doi.org/10.1006/qres.1997.1956 http://api.elsevier.com/content/article/PII:S0033589497919566?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589497919566?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400038953 |
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crcambridgeupr:10.1006/qres.1997.1956 2024-06-09T07:49:28+00:00 Palynological Evidence of Climatic and Oceanographic Changes in the North Sea during the Last Deglaciation Rochon, André de Vernal, Anne Sejrup, Hans-Petter Haflidason, Haflidi 1998 http://dx.doi.org/10.1006/qres.1997.1956 http://api.elsevier.com/content/article/PII:S0033589497919566?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589497919566?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400038953 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 49, issue 2, page 197-207 ISSN 0033-5894 1096-0287 journal-article 1998 crcambridgeupr https://doi.org/10.1006/qres.1997.1956 2024-05-15T13:11:18Z Palynological analyses performed on cores from the Norwegian Channel (Troll 8903) led to reconstruction of the late-glacial variations in sea-surface conditions using dinoflagellate cyst data and permitted direct correlation with the vegetation history of northwestern Europe derived from pollen assemblages. By ∼15,000 yr B.P., ice rapidly receded from the Norwegian shelf and relatively warm summer conditions prevailed in surface waters. A first late-glacial cooling marked by extensive seasonal sea–ice cover is dated at ca. 13,600–13,000 14 C yr B.P., which coincides with the Oldest Dryas interval. During the Bølling–Allerød interval, a rise in sea-surface temperature both in February (up to 3°C) and August (up to 15°C) led to the establishment of ice-free conditions in the northern North Sea, while pollen data reveal a densification of the vegetation cover. The beginning of the Younger Dryas interval is marked by an increase in nonarboreal pollen input indicative of the opening of the forest vegetation cover, concomitant with a cooling of surface waters during winter and development of sea–ice cover. However, sea-surface conditions remained relatively warm in summer until about 10,300 yr B.P., when extremely cold conditions and extensive sea–ice cover developed (up to 7 months/yr). Improving conditions are recorded in surface waters by ∼10,100 yr B.P., a few hundred years before the development of forest cover onshore, as shown by the pollen record. Such a discrepancy between marine and terrestrial indicators at the end of Younger Dryas time suggests a delayed response of the vegetation to regional climate warming. Article in Journal/Newspaper Sea ice Cambridge University Press Quaternary Research 49 2 197 207 |
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Cambridge University Press |
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English |
description |
Palynological analyses performed on cores from the Norwegian Channel (Troll 8903) led to reconstruction of the late-glacial variations in sea-surface conditions using dinoflagellate cyst data and permitted direct correlation with the vegetation history of northwestern Europe derived from pollen assemblages. By ∼15,000 yr B.P., ice rapidly receded from the Norwegian shelf and relatively warm summer conditions prevailed in surface waters. A first late-glacial cooling marked by extensive seasonal sea–ice cover is dated at ca. 13,600–13,000 14 C yr B.P., which coincides with the Oldest Dryas interval. During the Bølling–Allerød interval, a rise in sea-surface temperature both in February (up to 3°C) and August (up to 15°C) led to the establishment of ice-free conditions in the northern North Sea, while pollen data reveal a densification of the vegetation cover. The beginning of the Younger Dryas interval is marked by an increase in nonarboreal pollen input indicative of the opening of the forest vegetation cover, concomitant with a cooling of surface waters during winter and development of sea–ice cover. However, sea-surface conditions remained relatively warm in summer until about 10,300 yr B.P., when extremely cold conditions and extensive sea–ice cover developed (up to 7 months/yr). Improving conditions are recorded in surface waters by ∼10,100 yr B.P., a few hundred years before the development of forest cover onshore, as shown by the pollen record. Such a discrepancy between marine and terrestrial indicators at the end of Younger Dryas time suggests a delayed response of the vegetation to regional climate warming. |
format |
Article in Journal/Newspaper |
author |
Rochon, André de Vernal, Anne Sejrup, Hans-Petter Haflidason, Haflidi |
spellingShingle |
Rochon, André de Vernal, Anne Sejrup, Hans-Petter Haflidason, Haflidi Palynological Evidence of Climatic and Oceanographic Changes in the North Sea during the Last Deglaciation |
author_facet |
Rochon, André de Vernal, Anne Sejrup, Hans-Petter Haflidason, Haflidi |
author_sort |
Rochon, André |
title |
Palynological Evidence of Climatic and Oceanographic Changes in the North Sea during the Last Deglaciation |
title_short |
Palynological Evidence of Climatic and Oceanographic Changes in the North Sea during the Last Deglaciation |
title_full |
Palynological Evidence of Climatic and Oceanographic Changes in the North Sea during the Last Deglaciation |
title_fullStr |
Palynological Evidence of Climatic and Oceanographic Changes in the North Sea during the Last Deglaciation |
title_full_unstemmed |
Palynological Evidence of Climatic and Oceanographic Changes in the North Sea during the Last Deglaciation |
title_sort |
palynological evidence of climatic and oceanographic changes in the north sea during the last deglaciation |
publisher |
Cambridge University Press (CUP) |
publishDate |
1998 |
url |
http://dx.doi.org/10.1006/qres.1997.1956 http://api.elsevier.com/content/article/PII:S0033589497919566?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589497919566?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400038953 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Quaternary Research volume 49, issue 2, page 197-207 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1006/qres.1997.1956 |
container_title |
Quaternary Research |
container_volume |
49 |
container_issue |
2 |
container_start_page |
197 |
op_container_end_page |
207 |
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1801382072885968896 |