DOI: 10.1016/j.quascirev.2013.12.012
Scopus记录号: 2-s2.0-84892876542
论文题名: The last interglacial-glacial cycle (MIS 5-2) re-examined based on long proxy records from central and northern europe
作者: Helmens K.F.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 86 起始页码: 115
结束页码: 123
语种: 英语
英文关键词: Climate evolution
; Degree of continentality
; Fennoscandian Ice Sheet
; Last Glacial (MIS 4-2)
; Last Interglacial (MIS 5)
; N Atlantic sea-ice
; Pleniglacial
Scopus关键词: Climate evolution
; Degree of continentality
; Ice sheet
; Last glacial
; Last interglacial (MIS 5)
; Pleniglacial
; Climatology
; Geochronology
; Glaciers
; Isotopes
; Lithology
; Oceanography
; Piles
; Stratigraphy
; Vegetation
; Glacial geology
; bedrock
; climate variation
; Eemian
; glacial erosion
; glacial-interglacial cycle
; glaciation
; Last Interglacial
; marine isotope stage
; paleoceanography
; paleoclimate
; proxy climate record
; sea ice
; Atlantic Ocean
; Atlantic Ocean (North)
; Central Europe
; Northern Europe
英文摘要: Current multi-proxy studies on a long sediment sequence preserved at Sokli (N Finland), i.e. in the central area of Fennoscandian glaciations, are drastically changing classic ideas of glaciations, vegetation and climate in northern Europe during the Late Pleistocene. The sediments in the Sokli basin have escaped major glacial erosion due to non-typical bedrock conditions. In this review, the Sokli record is compared in great detail with other long proxy records from central, temperate and northern, boreal Europe. These comprise the classic records of La Grande Pile (E France) and Oerel (N Germany) and more recently obtained records from Horoszki Duże (E Poland) and Lake Yamozero (NW Russia). The focus of the review is on pollen, lithology and macrofossil- and insect-based temperature inferences. The long records are further compared with recent proxy data from nearby terrestrial sites as well as with the rapidly accumulating high-resolution proxy data from the ocean realm. The comparison allows a re-examination of the environmental history and climate evolution of the Last Interglacial-Glacial (LI-G) cycle (MIS 5-2). It shows that environmental and climate conditions during MIS 5 (ca130-70kaBP) were distinctly different from those during MIS 4-2 (ca70-15kaBP). MIS 5 is characterized by three long forested intervals (broadly corresponding to MIS 5e, 5c, 5a), both in temperate and northern boreal Europe. These mild periods were interrupted by two short, relatively cold and dry intervals (MIS 5d and 5b) with mountain-centered glaciation in Fennoscandia. Millennial scale climate events were superimposed upon these longer lasting climate fluctuations. The time interval encompassing MIS 4-2 shows open vegetation. It is characterized by two glacial maxima (MIS 4 and 2) with sub-continental scale glaciation over northern Europe and dry conditions in strongly continental eastern European settings. High amplitude climate oscillations of millennial duration characterized the climate variability of MIS 3. Mild climate conditions in early MIS 3 caused large-scale deglaciation of the Fennoscandian Ice Sheet, and ice-free conditions with Betula-dominated vegetation (including tree birch) persisted over large parts of Fennoscandia, possibly interrupted by glaciation, during major part of MIS 3 till ca35kaBP. Overall, MIS 5 was mostly mild with warmest or peak interglacial conditions at the very start during MIS 5e. MIS 4-2 was mostly cold with most extreme or peak glacial conditions in the closing phase during MIS 2. This points to a subdivision of the last climate cycle into an early, overall mild interglacial half and a late, overall cold glacial half, each with duration of ca50ka. This review also shows that the climate variability in central and northern Europe during the LI-G cycle was mostly in degrees of continentality with major shifts in winter temperature and precipitation values; summer temperatures, on the other hand, remained largely unchanged. It points to the waxing and waning of sea-ice over the North Atlantic Ocean as a possible characteristic feature of the Late Pleistocene. The present compilation, based on long terrestrial sequences, high-resolution multi-proxy data from the oceans, and quantified paleo-climate data, strongly favors a definition of entire Marine Oxygen Isotope Stage 5 as the Last Interglacial similar as in the original marine stratigraphy and the stratigraphy at La Grande Pile in France. The proxy-based climate data places the start of the Last Glacial at the base of MIS 4 and the northwest European Pleniglacial. It shows that the division between the Eemian (MIS 5e) and the Early Weichselian (MIS 5d-a) is not useful, as not relevant from a climate point of view. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60388
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Physical Geography and Quaternary Geology, Stockholm University, SE-10691 Stockholm, Sweden
Recommended Citation:
Helmens K.F.. The last interglacial-glacial cycle (MIS 5-2) re-examined based on long proxy records from central and northern europe[J]. Quaternary Science Reviews,2014-01-01,86