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Rapid Holocene climate changes in the North Atlantic: evidence from lake sediments from the Faroe Islands

Andresen, Camilla Snowman LU ; Björck, Svante LU ; Rundgren, Mats LU ; Conley, DJ and Jessen, Catherine LU (2006) In Boreas 35(1). p.23-34
Abstract
Holocene records from two lakes on the Faroe Islands were investigated to determine regional climatic variability: the fairly wind-exposed Lake Starvatn on Streymoy and the more sheltered Lake Lykkjuvotn on Sandoy. Sediment cores were analysed for content of biogenic silica, organic carbon and clastic material, and magnetic susceptibility. In addition, a new qualitative proxy for past lake ice cover and wind activity was developed using the flux of clastic grains that are larger than 255 mu m. Both long-term and short-term climatic developments were similar between the two lakes, suggesting a response to a regional climate signal. The long-term climate development is characterized by early Holocene rapid warming followed by Holocene... (More)
Holocene records from two lakes on the Faroe Islands were investigated to determine regional climatic variability: the fairly wind-exposed Lake Starvatn on Streymoy and the more sheltered Lake Lykkjuvotn on Sandoy. Sediment cores were analysed for content of biogenic silica, organic carbon and clastic material, and magnetic susceptibility. In addition, a new qualitative proxy for past lake ice cover and wind activity was developed using the flux of clastic grains that are larger than 255 mu m. Both long-term and short-term climatic developments were similar between the two lakes, suggesting a response to a regional climate signal. The long-term climate development is characterized by early Holocene rapid warming followed by Holocene climatic optimum conditions ending around 8300 cal. yr BP. A more open landscape as evidenced from increased sand grain influx in the period 8300-7200 cal. yr BP could reflect the aftermath of the 8200 cal. yr BP event, although the event itself is not recognized in either of the two lake records. From around 7200 cal. yr BP the mid-Holocene climate deterioration is observed and from 4200 cal. yr BP the climate deteriorated further with increased amplitude of centennial cooling episodes. (Less)
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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Boreas
volume
35
issue
1
pages
23 - 34
publisher
John Wiley and Sons
external identifiers
  • wos:000234922300002
  • scopus:32144441728
ISSN
1502-3885
DOI
10.1080/03009480500359228
language
English
LU publication?
yes
id
e33a9e70-3e4c-4e56-8308-bf5c2f4e6150 (old id 419528)
date added to LUP
2016-04-01 12:10:59
date last changed
2021-02-17 04:40:15
@article{e33a9e70-3e4c-4e56-8308-bf5c2f4e6150,
  abstract     = {Holocene records from two lakes on the Faroe Islands were investigated to determine regional climatic variability: the fairly wind-exposed Lake Starvatn on Streymoy and the more sheltered Lake Lykkjuvotn on Sandoy. Sediment cores were analysed for content of biogenic silica, organic carbon and clastic material, and magnetic susceptibility. In addition, a new qualitative proxy for past lake ice cover and wind activity was developed using the flux of clastic grains that are larger than 255 mu m. Both long-term and short-term climatic developments were similar between the two lakes, suggesting a response to a regional climate signal. The long-term climate development is characterized by early Holocene rapid warming followed by Holocene climatic optimum conditions ending around 8300 cal. yr BP. A more open landscape as evidenced from increased sand grain influx in the period 8300-7200 cal. yr BP could reflect the aftermath of the 8200 cal. yr BP event, although the event itself is not recognized in either of the two lake records. From around 7200 cal. yr BP the mid-Holocene climate deterioration is observed and from 4200 cal. yr BP the climate deteriorated further with increased amplitude of centennial cooling episodes.},
  author       = {Andresen, Camilla Snowman and Björck, Svante and Rundgren, Mats and Conley, DJ and Jessen, Catherine},
  issn         = {1502-3885},
  language     = {eng},
  number       = {1},
  pages        = {23--34},
  publisher    = {John Wiley and Sons},
  series       = {Boreas},
  title        = {Rapid Holocene climate changes in the North Atlantic: evidence from lake sediments from the Faroe Islands},
  url          = {http://dx.doi.org/10.1080/03009480500359228},
  doi          = {10.1080/03009480500359228},
  volume       = {35},
  year         = {2006},
}