DOI: 10.1016/j.palaeo.2016.02.005
论文题名: Grain size of Lake Qinghai sediments: Implications for riverine input and Holocene monsoon variability
作者: Liu X. ; Vandenberghe J. ; An Z. ; Li Y. ; Jin Z. ; Dong J. ; Sun Y.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 449 起始页码: 41
结束页码: 51
语种: 英语
英文关键词: Asian summer monsoon
; Grain size
; Holocene
; Lake Qinghai
; Solar activities
英文摘要: Grain-size compositions of lake sediments can provide direct information on changes in transporting mechanism and sedimentary environment. Various grain-size parameters have been employed to reconstruct hydrological conditions within the lake and dust influx from outside the lake. Here we present the grain-size results of a 5-m core retrieved from Lake Qinghai, northeastern Tibetan Plateau in order to address the links between Holocene depositional process and climatic change. Our results indicate that two parameters (skewness and grain-size ratio of 8-50/2-8 μm) are sensitive to hydrodynamic changes in Lake Qinghai, which are further linked to the strength of the Asian summer monsoon. Variations of these two parameters reveal that summer monsoon intensity weakened gradually from early to late Holocene, superimposed by persistent centennial variability with dominant periods at 0.35, 0.23 and 0.12 kyr. Comparison of grain-size variations with solar activities and North Atlantic cooling events reveals that solar forcing likely plays an important role in driving centennial monsoon variability. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68502
Appears in Collections: 过去全球变化的重建
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作者单位: State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China; College of Earth Science, University of Chinese Academy of Sciences, Beijing, China; Institute of Earth Sciences, Vrije Universiteit, De Boelelaan 1085, HV Amsterdam, Netherlands
Recommended Citation:
Liu X.,Vandenberghe J.,An Z.,et al. Grain size of Lake Qinghai sediments: Implications for riverine input and Holocene monsoon variability[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,449