DOI: 10.1016/j.quascirev.2013.11.013
Scopus记录号: 2-s2.0-84890201522
论文题名: Insights into continental temperatures in the northwestern Black Sea area during the Last Glacial period using branched tetraether lipids
作者: Sanchi L. ; Ménot G. ; Bard E.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 84 起始页码: 98
结束页码: 108
语种: 英语
英文关键词: Abrupt climate changes
; Black Sea
; BrGDGTs
; Continental paleotemperatures
; Last Glacial
; MBT/CBT
Scopus关键词: Abrupt climate change
; Black sea
; BrGDGTs
; Last glacial
; MBT/CBT
; Paleotemperatures
; Catchments
; Climate change
; Glycerol
; Soils
; Glacial geology
; climate variation
; lacustrine deposit
; Last Glacial
; lipid
; Northern Hemisphere
; paleotemperature
; quantitative analysis
; Black Sea
; Europe
英文摘要: In the continental realm, continuous quantitative temperature reconstructions spanning the Last Glacial are rare, especially in central and eastern Europe. Here, we provide a reconstruction from the northwestern Black Sea catchment, spanning 40 to 9ka BP, from a study of the relative distribution of branched glycerol dialkyl glycerol tetraethers (brGDGTs) in Black Sea lacustrine sediments. First, the origins of brGDGTs are discussed. The comparison of geochemical proxies from the same core supports a dominant terrestrial origin for brGDGTs during the Last Glacial, and a strong decrease in the soil derived brGDGT proportion toward the Holocene. Since the lowering of soil vs. lacustrine derived brGDGTs is prone to bias the temperature signal that is reconstructed using a soil calibration, a correction for in situ-production is applied. The corrected signal is compared to independent discrete temperature records from the study area. The brGDGT-temperature relative evolution reconstructed in this work provides additional insight regarding millennial-scale climate variability in central and eastern Europe. Notably, the imprints of Heinrich event cold spells and Lateglacial climatic oscillations are consistent with other regional paleorecords from the Northern Hemisphere.© 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60402
Appears in Collections: 过去全球变化的重建
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作者单位: Aix-Marseille Université, CNRS, IRD, Collège de France, CEREGE UM34, 13545 Aix en Provence, France
Recommended Citation:
Sanchi L.,Ménot G.,Bard E.. Insights into continental temperatures in the northwestern Black Sea area during the Last Glacial period using branched tetraether lipids[J]. Quaternary Science Reviews,2014-01-01,84