DOI: 10.1016/j.quascirev.2019.01.011
Scopus记录号: 2-s2.0-85061437538
论文题名: Characterizing the Eemian-Weichselian transition in northwestern Europe with three multiproxy speleothem archives from the Belgian Han-sur-Lesse and Remouchamps cave systems
作者: Vansteenberge S. ; Verheyden S. ; Genty D. ; Blamart D. ; Goderis S. ; Van Malderen S.J.M. ; Vanhaecke F. ; Hodel F. ; Gillikin D. ; Ek C. ; Quinif Y. ; Cheng H. ; Edwards R.L. ; Claeys P.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2019
卷: 208 起始页码: 21
结束页码: 37
语种: 英语
英文关键词: Glacial inception
; Interglacial(s)
; Paleoclimatology
; Speleothems
; Stable isotopes
; Western Europe
Scopus关键词: Climatology
; Stochastic systems
; Trace elements
; Vegetation
; Glacial inception
; Interglacial(s)
; Paleoclimatology
; Speleothems
; Stable isotopes
; Western Europe
; Glacial geology
; carbon isotope
; cave
; climate variation
; Eemian
; glacial-interglacial cycle
; grass
; paleoclimate
; Quaternary
; speleothem
; stable isotope
; stochasticity
; vegetation
; Weichselian
; Belgium
; Germany
; Western Europe
英文摘要: Interglacial to glacial transitions represent the most drastic turnovers in the Quaternary climate system. Yet, millennial-scaled climate variability and stochastic internal variability that result in (inter)glacial transitions remain poorly understood. Here, three speleothems from two different cave systems in Belgium are investigated to characterize the Eemian to early Weichselian transition. The speleothems show high reproducibility for δ 13 C, interpreted as a proxy for past vegetation activity, controlled by type of vegetation above the cave. All three speleothems show a drastic increase in δ 13 C between 118 and 117 ka, reflecting a rapid change in vegetation from last interglacial temperate tree species towards glacial open-grass vegetation. This transition shows a strong affinity with the Late Eemian Aridity Pulse (LEAP) at 118 ± 1 ka, previously identified in pollen records from Western Germany. An age of 117.7 ± 0.5 ka is determined for the start of this transition in the Belgian speleothems. The speleothem records show a distinct transition in the proxies between Eemian optimum conditions and increased variability during the glacial inception and therefore the Eemian-Weichselian transition is set at 117.7 ± 0.5 ka in the speleothem records. High-resolution trace element analysis shows that the transition is initiated by a cooling pulse followed by a decrease in precipitation. Through comparison with other archives, including North-Atlantic sedimentary records, it is proposed that the transition at 117.7 ka constitutes an internal climate response caused by a substantial input of freshwater from degraded ice-sheets by the end of the Eemian (∼120-118 ka). © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117366
Appears in Collections: 气候变化与战略
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Recommended Citation:
Vansteenberge S.,Verheyden S.,Genty D.,et al. Characterizing the Eemian-Weichselian transition in northwestern Europe with three multiproxy speleothem archives from the Belgian Han-sur-Lesse and Remouchamps cave systems[J]. Quaternary Science Reviews,2019-01-01,208