DOI: 10.1016/j.quascirev.2013.06.022
Scopus记录号: 2-s2.0-84885960093
论文题名: Reconstructing past sea ice cover of the Northern Hemisphere from dinocyst assemblages: Status of the approach
作者: De Vernal A. ; Rochon A. ; Fréchette B. ; Henry M. ; Radi T. ; Solignac S.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 79 起始页码: 122
结束页码: 134
语种: 英语
英文关键词: Arctic
; Climate
; Dinoflagellates
; Modern analogue technique
; Organic-walled microfossils
; Palynology
; Sea ice cover
; Subarctic
Scopus关键词: Arctic
; Climate
; Dinoflagellates
; Microfossils
; Modern analogue techniques
; Palynology
; Sea-ice cover
; Subarctic
; Mean square error
; Plants (botany)
; Population statistics
; Sea ice
; annual variation
; biostratigraphy
; canonical analysis
; dinoflagellate cyst
; environmental conditions
; ice cover
; microfossil
; Northern Hemisphere
; paleoceanography
; palynology
; reconstruction
; salinity
; sea ice
; subarctic region
; surficial sediment
; uncertainty analysis
; Brigantedinium
; Dinophyceae
; Echinidinium
; Impagidinium
; Operculodinium centrocarpum
; Pentapharsodinium dalei
; Polykrikos
; Spiniferites elongatus
英文摘要: Dinocysts occur in a wide range of environmental conditions, including polar areas. We review here their use for the reconstruction of paleo sea ice cover in such environments. In the Arctic Ocean and subarctic seas characterized by dense sea ice cover, Islandinium minutum, Islandinium? cezare, Echinidinium karaense, Polykrikos sp. var. Arctic, Spiniferites elongatus-frigidus and Impagidinium pallidum are common and often occur with more cosmopolitan taxa such as Operculodinium centrocarpum sensu Wall & Dale, cyst of Pentapharsodinium dalei and Brigantedinium spp. Canonical correspondence analyses conducted on dinocyst assemblages illustrate relationships with sea surface parameters such as salinity, temperature, and sea ice cover. The application of the modern analogue technique permits quantitative reconstruction of past sea ice cover, which is expressed in terms of seasonal extent of sea ice cover (months per year with more than 50% of sea ice concentration) or mean annual sea ice concentration (in tenths). The accuracy of reconstructions or root mean square error of prediction (RMSEP) is ±1.1 over 10, which corresponds to perennial sea ice. Such an error is close to the interannual variability (standard deviation) of observed sea ice cover. Mismatch between the time interval of instrumental data used as reference (1953-2000) and the time interval represented by dinocyst populations in surface sediment samples, which may cover decades if not centuries, is another source of error. Despite uncertainties, dinocyst assemblages are useful for making quantitative reconstruction of seasonal sea ice cover. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60484
Appears in Collections: 过去全球变化的重建
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作者单位: Centre de recherche en géochimie et géodynamique (Geotop), Université du Québec à Montréal, PO Box 8888, succursale centre-ville, Montréal, QC H3C 3P8, Canada; ISMER, Université du Québec à Rimouski, 310 allée des Ursulines, Rimouski, QC G5L 3A1, Canada
Recommended Citation:
De Vernal A.,Rochon A.,Fréchette B.,et al. Reconstructing past sea ice cover of the Northern Hemisphere from dinocyst assemblages: Status of the approach[J]. Quaternary Science Reviews,2013-01-01,79