DOI: 10.1016/j.quascirev.2018.06.012
Scopus记录号: 2-s2.0-85048993861
论文题名: Climate response of the Florida Peninsula to Heinrich events in the North Atlantic
作者: Arnold T.E. ; Diefendorf A.F. ; Brenner M. ; Freeman K.H. ; Baczynski A.A.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 194 起始页码: 1
结束页码: 11
语种: 英语
英文关键词: Biomarkers
; Carbon isotopes
; Heinrich events
; Hydrogen isotopes
; Lake Tulane
; North Atlantic
; Paleoclimatology
; Pleistocene
; Rapid climate change
Scopus关键词: Biomarkers
; Climate change
; Isotopes
; Lakes
; Lipids
; Plants (botany)
; Carbon isotopes
; Heinrich Events
; Hydrogen isotope
; North Atlantic
; Paleoclimatology
; Pleistocene
; Rapid climate change
; Oceanography
; Magnoliophyta
英文摘要: Hydrogen and carbon isotope values (δD & δ13C) were measured on lipid biomarkers from a sediment core collected in Lake Tulane, Florida, USA, to infer shifts in climate and hydrologic variables during the Last Glacial. Isotopic trends from 24 samples correlate with plant community shifts evaluated in a previous pollen study by Grimm et al. (2006). We observe maxima in Δleaf values and minima in δD values concurrent with peaks in Pinus pollen abundances and Heinrich Events 4-2. Increased Δleaf values during North Atlantic cold spells indicate lower water-use-efficiency among angiosperms around Lake Tulane. Combined δD values from terrestrial and aquatic lipids, confirm that aridity decreased during cold, stadial periods (Heinrich Events), and increased during warm, interstadials. Furthermore, lower δD values in aquatic lipids during stadials are attributed to warming, as well as changing moisture sources. The anti-phase relationship between temperatures and aridity derived from our subtropical lacustrine record and those at high latitude in the North Atlantic is likely the result of complex ocean-atmosphere teleconnections that resulted from the collapse of Atlantic Meridional Overturning Circulation during Heinrich Events in the North Atlantic. © 2018 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112103
Appears in Collections: 气候减缓与适应
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作者单位: Department of Geological Sciences, University of Florida, Gainesville, Florida 32611, United States; Department of Geology, University of Cincinnati, PO Box 210013, Cincinnati, Ohio 45221-0013, United States; Department of Geosciences, Pennsylvania State University, University Park, PA 16802, United States
Recommended Citation:
Arnold T.E.,Diefendorf A.F.,Brenner M.,et al. Climate response of the Florida Peninsula to Heinrich events in the North Atlantic[J]. Quaternary Science Reviews,2018-01-01,194