Mid- to late-Holocene climate variability and anthropogenic impacts: multi-proxy evidence from Lake Bliden, Denmark
We conducted multi-proxy geochemical analyses (including measurements of organic carbon, nitrogen and sulphur stable isotope composition, and carbonate carbon and oxygen isotope composition) on a 13.5 m sediment core from Lake Bliden, Denmark, which provide a record of shifting hydrological conditio...
Published in: | Journal of Paleolimnology |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2010
|
Subjects: | |
Online Access: | https://pure.qub.ac.uk/en/publications/19dbfa26-49c7-406d-acdc-f747b5539cb0 https://doi.org/10.1007/s10933-009-9334-7 |
id |
ftqueensubelpubl:oai:pure.qub.ac.uk/portal:publications/19dbfa26-49c7-406d-acdc-f747b5539cb0 |
---|---|
record_format |
openpolar |
spelling |
ftqueensubelpubl:oai:pure.qub.ac.uk/portal:publications/19dbfa26-49c7-406d-acdc-f747b5539cb0 2024-05-19T07:41:29+00:00 Mid- to late-Holocene climate variability and anthropogenic impacts: multi-proxy evidence from Lake Bliden, Denmark Olsen, Jesper Noe-Nygaard, N. Wolfe, B.B. 2010 https://pure.qub.ac.uk/en/publications/19dbfa26-49c7-406d-acdc-f747b5539cb0 https://doi.org/10.1007/s10933-009-9334-7 eng eng https://pure.qub.ac.uk/en/publications/19dbfa26-49c7-406d-acdc-f747b5539cb0 info:eu-repo/semantics/restrictedAccess Olsen , J , Noe-Nygaard , N & Wolfe , B B 2010 , ' Mid- to late-Holocene climate variability and anthropogenic impacts: multi-proxy evidence from Lake Bliden, Denmark ' , Journal of Paleolimnology , vol. 43 , no. 2 , pp. 323-343 . https://doi.org/10.1007/s10933-009-9334-7 /dk/atira/pure/subjectarea/asjc/1100/1104 name=Aquatic Science /dk/atira/pure/subjectarea/asjc/1900/1904 name=Earth-Surface Processes article 2010 ftqueensubelpubl https://doi.org/10.1007/s10933-009-9334-7 2024-04-24T23:57:33Z We conducted multi-proxy geochemical analyses (including measurements of organic carbon, nitrogen and sulphur stable isotope composition, and carbonate carbon and oxygen isotope composition) on a 13.5 m sediment core from Lake Bliden, Denmark, which provide a record of shifting hydrological conditions for the past 6,700 years. The early part of the stratigraphic record (6,700-5,740 cal year BP) was wet, based on delta O-18(carb) and lithology, and corresponds to the Holocene Thermal Maximum. Shifts in primarily delta O-18(carb) indicate dry conditions prevailed from 5,740 to 2,800 cal year BP, although this was interrupted by very wet conditions from 5,300 to 5,150, 4,300 to 4,050 and 3,700 to 3,450 cal year BP. The timing of the latter two moist intervals is consistent with other Scandinavian paleoclimatic records. Dry conditions at Lake Bliden between 3,450 and 2,800 cal year BP is consistent with other paleolimnological records from southern Sweden but contrasts with records in central Sweden, possibly suggesting a more northerly trajectory of prevailing westerlies carrying moisture from the North Atlantic at this time. Overall, fluctuating moisture conditions at Lake Bliden appear to be strongly linked to changing sea surface temperatures in the Greenland, Iceland and Norwegian seas. After 2,800 cal year BP, sedimentology, magnetic susceptibility, delta C-13(ORG), delta C-13(carb) and delta O-18(carb) indicate a major reduction on water level, which caused the depositional setting at the coring site to shift from the profundal to littoral zone. The Roman Warm Period (2,200-1,500 cal year BP) appears dry based on enriched delta O-18(carb) values. Possible effects of human disturbance in the watershed after 820 cal year BP complicate attempts to interpret the stratigraphic record although tentative interpretation of the delta O-18(carb), magnetic susceptibility, delta C-13(ORG), delta C-13(carb) and delta O-18(carb) records suggest that the Medieval Warm Period was dry and the Little Ice Age was wet. Article in Journal/Newspaper Greenland Iceland North Atlantic Queen's University Belfast Research Portal Journal of Paleolimnology 43 2 323 343 |
institution |
Open Polar |
collection |
Queen's University Belfast Research Portal |
op_collection_id |
ftqueensubelpubl |
language |
English |
topic |
/dk/atira/pure/subjectarea/asjc/1100/1104 name=Aquatic Science /dk/atira/pure/subjectarea/asjc/1900/1904 name=Earth-Surface Processes |
spellingShingle |
/dk/atira/pure/subjectarea/asjc/1100/1104 name=Aquatic Science /dk/atira/pure/subjectarea/asjc/1900/1904 name=Earth-Surface Processes Olsen, Jesper Noe-Nygaard, N. Wolfe, B.B. Mid- to late-Holocene climate variability and anthropogenic impacts: multi-proxy evidence from Lake Bliden, Denmark |
topic_facet |
/dk/atira/pure/subjectarea/asjc/1100/1104 name=Aquatic Science /dk/atira/pure/subjectarea/asjc/1900/1904 name=Earth-Surface Processes |
description |
We conducted multi-proxy geochemical analyses (including measurements of organic carbon, nitrogen and sulphur stable isotope composition, and carbonate carbon and oxygen isotope composition) on a 13.5 m sediment core from Lake Bliden, Denmark, which provide a record of shifting hydrological conditions for the past 6,700 years. The early part of the stratigraphic record (6,700-5,740 cal year BP) was wet, based on delta O-18(carb) and lithology, and corresponds to the Holocene Thermal Maximum. Shifts in primarily delta O-18(carb) indicate dry conditions prevailed from 5,740 to 2,800 cal year BP, although this was interrupted by very wet conditions from 5,300 to 5,150, 4,300 to 4,050 and 3,700 to 3,450 cal year BP. The timing of the latter two moist intervals is consistent with other Scandinavian paleoclimatic records. Dry conditions at Lake Bliden between 3,450 and 2,800 cal year BP is consistent with other paleolimnological records from southern Sweden but contrasts with records in central Sweden, possibly suggesting a more northerly trajectory of prevailing westerlies carrying moisture from the North Atlantic at this time. Overall, fluctuating moisture conditions at Lake Bliden appear to be strongly linked to changing sea surface temperatures in the Greenland, Iceland and Norwegian seas. After 2,800 cal year BP, sedimentology, magnetic susceptibility, delta C-13(ORG), delta C-13(carb) and delta O-18(carb) indicate a major reduction on water level, which caused the depositional setting at the coring site to shift from the profundal to littoral zone. The Roman Warm Period (2,200-1,500 cal year BP) appears dry based on enriched delta O-18(carb) values. Possible effects of human disturbance in the watershed after 820 cal year BP complicate attempts to interpret the stratigraphic record although tentative interpretation of the delta O-18(carb), magnetic susceptibility, delta C-13(ORG), delta C-13(carb) and delta O-18(carb) records suggest that the Medieval Warm Period was dry and the Little Ice Age was wet. |
format |
Article in Journal/Newspaper |
author |
Olsen, Jesper Noe-Nygaard, N. Wolfe, B.B. |
author_facet |
Olsen, Jesper Noe-Nygaard, N. Wolfe, B.B. |
author_sort |
Olsen, Jesper |
title |
Mid- to late-Holocene climate variability and anthropogenic impacts: multi-proxy evidence from Lake Bliden, Denmark |
title_short |
Mid- to late-Holocene climate variability and anthropogenic impacts: multi-proxy evidence from Lake Bliden, Denmark |
title_full |
Mid- to late-Holocene climate variability and anthropogenic impacts: multi-proxy evidence from Lake Bliden, Denmark |
title_fullStr |
Mid- to late-Holocene climate variability and anthropogenic impacts: multi-proxy evidence from Lake Bliden, Denmark |
title_full_unstemmed |
Mid- to late-Holocene climate variability and anthropogenic impacts: multi-proxy evidence from Lake Bliden, Denmark |
title_sort |
mid- to late-holocene climate variability and anthropogenic impacts: multi-proxy evidence from lake bliden, denmark |
publishDate |
2010 |
url |
https://pure.qub.ac.uk/en/publications/19dbfa26-49c7-406d-acdc-f747b5539cb0 https://doi.org/10.1007/s10933-009-9334-7 |
genre |
Greenland Iceland North Atlantic |
genre_facet |
Greenland Iceland North Atlantic |
op_source |
Olsen , J , Noe-Nygaard , N & Wolfe , B B 2010 , ' Mid- to late-Holocene climate variability and anthropogenic impacts: multi-proxy evidence from Lake Bliden, Denmark ' , Journal of Paleolimnology , vol. 43 , no. 2 , pp. 323-343 . https://doi.org/10.1007/s10933-009-9334-7 |
op_relation |
https://pure.qub.ac.uk/en/publications/19dbfa26-49c7-406d-acdc-f747b5539cb0 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s10933-009-9334-7 |
container_title |
Journal of Paleolimnology |
container_volume |
43 |
container_issue |
2 |
container_start_page |
323 |
op_container_end_page |
343 |
_version_ |
1799481081866485760 |