DOI: 10.1016/j.epsl.2018.05.025
Scopus记录号: 2-s2.0-85047340077
论文题名: Late Quaternary climate in southern China deduced from Sr–Nd isotopes of Huguangyan Maar sediments
作者: Zaarur S. ; Stein M. ; Adam O. ; Mingram J. ; Chu G. ; Liu J. ; Wu J. ; Erel Y.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 496 起始页码: 10
结束页码: 19
语种: 英语
英文关键词: East Asian monsoon
; Huguangyan Maar
; paleo-climate
; Sr–Nd
Scopus关键词: Atmospheric thermodynamics
; Climatology
; Isotopes
; Lakes
; Volcanoes
; Chemical compositions
; Climate condition
; Climatic conditions
; East Asian monsoon
; Huguangyan Maar
; paleo-climate
; Regional climate
; Volcanic materials
; Sediments
英文摘要: The hydro-climatic conditions that prevailed during the last Glacial and early to mid-Holocene periods in South China are inferred from chemical compositions and Sr–Nd isotope ratios of sediments from lake Huguangyan Maar and its vicinity. The lake sediments are comprised of organic matter, volcanic materials and aeolian input from nearby granitoid-derived soils. Variations in 87Sr/86Sr ratios in the lake sediments indicate two modes of climate conditions: wet intervals during which the lake sediments are mainly derived from the volcanic-lake rim materials, expressed in low 87Sr/86Sr ratios, and dry intervals during which fine particles from the nearby granitic soils are windblown to the lake and supply local dust expressed in high 87Sr/86Sr ratios in the sediments. These wet and dry intervals generally correspond to regional climate records (e.g., speleothem δ18O profiles in southeast China) and correlate with global climate events (e.g., Heinrich events). While δ18O records of speleothems from southeast China caves are dominated by the precession signal, the Huguangyan Maar Sr record mainly correlates with obliquity. This most likely reflects masking of the precession signal due to regional climate variability, accentuating the obliquity signal. These local effects may also account for some of the differences that have been observed between the various East Asian monsoon records. More importantly, the masking of the precession signal reveals the direct influence of obliquity on the hydro-climate regime in South China. © 2018 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109795
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Institute of Earth Sciences, The Hebrew University of Jerusalem, Givat Ram, 91904, Israel; Geological Survey of Israel, 30 Malkhe Israel St., Jerusalem, 95501, Israel; Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China; College of Earth and Planetary Sciences, Chinese Academy of Sciences, Beijing, China; GFZ German Research Centre for Geosciences, Potsdam, Germany
Recommended Citation:
Zaarur S.,Stein M.,Adam O.,et al. Late Quaternary climate in southern China deduced from Sr–Nd isotopes of Huguangyan Maar sediments[J]. Earth and Planetary Science Letters,2018-01-01,496