DOI: 10.1016/j.quascirev.2015.05.013
Scopus记录号: 2-s2.0-84930655156
论文题名: Evolution of the central Nordic Seas over the last 20 thousand years
作者: Telesiński M.M. ; Bauch H.A. ; Spielhagen R.F. ; Kandiano E.S.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2015
卷: 121 起始页码: 98
结束页码: 109
语种: 英语
英文关键词: Deglaciation
; Holocene
; Ice-rafted debris
; Nordic Seas
; Paleoceanography
; Planktic foraminifera
; Stable isotopes
Scopus关键词: Flow of water
; Isotopes
; Lithology
; Mooring
; Sea ice
; Surface waters
; Water
; Deglaciations
; Holocenes
; Ice rafted debris
; Nordic seas
; Paleoceanography
; Planktic foraminifera
; Stable isotopes
; Ice
; deglaciation
; gyre
; Heinrich event
; Holocene
; ice sheet
; ice-rafted debris
; micropaleontology
; paleoceanography
; planktonic foraminifera
; reconstruction
; stable isotope
; Arctic Ocean
; Norwegian Sea
; Foraminifera
英文摘要: The deep and surface water paleoceanographic evolution of the central Nordic Seas over the last 20 thousand years was reconstructed using various micropaleontological, isotopic and lithological proxy data. These show a high spatial and temporal complexity of the oceanic circulation when compared with other records from the region. During early deglaciation a collapse of ice sheets surrounding the Nordic Seas released large amounts of freshwater that affected both the surface and bottom water circulation and significantly contributed to Heinrich stadial 1. During the Younger Dryas, the central Nordic Seas were affected by a last major freshwater plume which probably originated from the Arctic Ocean. When major ice rafting had ceased around 11ka subsurface temperatures started to rise. However, Atlantic Water advection and subsurface temperatures reached their maximum in the central Nordic Seas later than along the eastern continental margin. That spatio-temporal offset is explained by a gradual re-routing and westward expansion of the Atlantic Water flow during times when the Greenland Sea gyre system became more steadily established. In the Greenland Basin, the Holocene thermal maximum ended c. 5.5ka, and time-coeveal with an increase in sea-ice export from the Arctic. In the Lofoten Basin the cooling occurred later, after 4ka, and together with a weakening of the overturning processes. The Neoglacial cooling was reached c. 3ka, together with low solar irradiance, expanding sea ice and a slight decrease in deep convection. At c. 2ka subsurface temperatures began to rise again due to an increasing influence of Atlantic Waters. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59899
Appears in Collections: 过去全球变化的重建
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作者单位: GEOMAR Helmholtz Centre for Ocean Research Kiel, Wischhofstrasse 1-3, Kiel, Germany; Academy of Sciences and Literature, Mainz, Germany; Royal Netherlands Institute for Sea Research, Texel, Netherlands
Recommended Citation:
Telesiński M.M.,Bauch H.A.,Spielhagen R.F.,et al. Evolution of the central Nordic Seas over the last 20 thousand years[J]. Quaternary Science Reviews,2015-01-01,121