DOI: 10.1016/j.quascirev.2014.01.018
Scopus记录号: 2-s2.0-84896109448
论文题名: Lateglacial and early-Holocene climate variability reconstructed from multi-proxy records on Andøya, northern Norway
作者: Birks H.H. ; Aarnes I. ; Bjune A.E. ; Brooks S.J. ; Bakke J. ; Kühl N. ; Birks H.J.B.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 89 起始页码: 108
结束页码: 122
语种: 英语
英文关键词: Allerød
; Catchment glacier
; Chironomids
; Early Holocene
; Inferred July temperature
; Lateglacial aridity
; Macrofossils
; Pollen
; Sea ice
; Younger Dryas
Scopus关键词: Atmospheric temperature
; Catchments
; Plants (botany)
; Runoff
; Sea ice
; Chironomids
; Early Holocene
; Lateglacial aridities
; Macrofossils
; Pollen
; Younger Dryas
; Glacial geology
; biotic factor
; climate variation
; Holocene
; island
; late glacial
; least squares method
; proxy climate record
; Arctic Ocean
; Norway
; Norwegian Sea
英文摘要: We reconstruct mean July temperature (Tjul) from three sites on the island of Andøya, northern Norway for the period 15000-9000cal yr BP using three biotic proxies. A probabilistic indicator species approach (pdf method) was used for plant macrofossil data from all sites (M-Tjul). Reconstructions based on pollen (P-Tjul) (2 sites) and chironomids C-Tjul) (1 site) were done using weighted averaging and weighted-averaging partial least-squares, respectively. A sediment proxy for catchment glacier development was measured at the main site, Lusvatnet. The July temperature reconstructions from all the sites show a similar development through the deglaciation. An initial July temperature of 4°C increased to a maximum of 7-8°C during the Allerød at c.13200cal yr BP. There was no marked cooling at the start of the Younger Dryas (YD) chronozone, at Lusvatnet, C-Tjul decreased after 12700cal yr BP to a low of 6°C at about 12550cal yr BP before increasing markedly around 12400cal yr BP. Conversely, P-Tjul rose slowly through the early YD. Both proxies exceeded the Allerød temperatures for around 300 years before decreasing towards a minimum of 6°C at c. 12000cal yr BP. M-Tjul maintained a mean of c. 8 °C throughout the YD. Different sensitivities of proxies are discussed. Their different responses during the YD at the three sites, along with the glacial evidence, highlight the role of aridity. At c. 11500cal yr BP, July temperatures increased rapidly over Andøya to about 10°C, and then rose gradually to maximum values of 12°C at c. 9700calyr BP. The temperature reconstructions are consistent with the flow of Atlantic water into the Nordic Seas except during the YD, when variability in sea ice may have been more important. During the early Holocene there are some differences between sites, resulting from local site factors such as altitude and exposure, soil development, and catchment instability. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60352
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Biology, University of Bergen, Bjerknes Centre for Climate Research, Post Box 7803, N-5020 Bergen, Norway; Uni Climate, Uni Research AS, Bjerknes Centre for Climate Research, Allégaten 55, N-5007 Bergen, Norway; Department of Entomology, Natural History Museum, London SW7 5BD, United Kingdom; Department of Earth Science, University of Bergen, Bjerknes Centre for Climate Research, Post Box 7803, N-5020 Bergen, Norway; Steinmann Institute of Geology, Mineralogy and Paleontology, University of Bonn, Nussallee 8, 53115 Bonn, Germany; Environmental Change Research Centre, University College London, London WC1E 6BT, United Kingdom; School of Geography and the Environment, University of Oxford, Oxford OX1 3QY, United Kingdom
Recommended Citation:
Birks H.H.,Aarnes I.,Bjune A.E.,et al. Lateglacial and early-Holocene climate variability reconstructed from multi-proxy records on Andøya, northern Norway[J]. Quaternary Science Reviews,2014-01-01,89