DOI: 10.1016/j.quascirev.2013.08.007
Scopus记录号: 2-s2.0-84883792013
论文题名: Low latitude hydro-climatic changes during the Plio-Pleistocene: Evidence from high resolution alkane records in the southern South China Sea
作者: Li L. ; Li Q. ; Tian J. ; Wang H. ; Wang P.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 78 起始页码: 209
结束页码: 224
语种: 英语
英文关键词: Hydro-climate
; N-Alkane chain lengths
; Plant n-alkanes
; Plio-Pleistocene
Scopus关键词: Global climate changes
; Hydro-climate
; Mid-pleistocene climate transition
; N-alkane chains
; n-Alkanes
; Northern hemisphere glaciations
; Plio-pleistocene
; Southern South China Sea
; Chain length
; Chains
; Climate change
; Glacial geology
; Salinity measurement
; Paraffins
; alkane
; biomarker
; climate variation
; glacial-interglacial cycle
; hydrometeorology
; latitude
; Pleistocene
; Pliocene
; precipitation (climatology)
; proxy climate record
; tropical meteorology
; Pacific Ocean
; South China Sea
英文摘要: High resolution records of long chain n-alkane biomarkers from the southern South China Sea reveal tightly response of n-alkane distribution to hydro-climate changes over the past 5Ma, with increasing longer chain n-C31 alkanes indicating a correlation with drier conditions and increasing shorter chain n-C27 alkanes with wetter conditions. The variations of the C31/C27 ratio, or the alkane chain length index, imply humid conditions before 2.9Ma, progressively reduced moisture since then and to bigger fluctuations between wet and dry conditions since 1.2Ma. This long term hydro-climate trend is superimposed by glacial dry and interglacial wet patterns over the Plio-Pleistocene glacial cycles. Combined with other proxy records, our results indicate that precipitation over the tropical Asia-Pacific strengthened before the onset of the northern hemisphere glaciation and the mid-Pleistocene climate transition at about 1.2Ma. These dramatic humidity changes over major climate transitions imply a crucial role of tropical hydrology dynamics on global climate change in the late Cenozoic. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60489
Appears in Collections: 过去全球变化的重建
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作者单位: State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China; School of Earth and Environmental Sciences, University of Adelaide, SA 5005, Australia
Recommended Citation:
Li L.,Li Q.,Tian J.,et al. Low latitude hydro-climatic changes during the Plio-Pleistocene: Evidence from high resolution alkane records in the southern South China Sea[J]. Quaternary Science Reviews,2013-01-01,78