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Climate significance of speleothem d18O from central China on decadaltimescale
Tan,LC(Tan,Liangcheng)[1,2]; Cai,YJ(Cai,Yanjun)[1,3]; Cheng,H(Cheng,Hai)[3,4]; Edwards,R.L(Edwards,R.Lawrence)[4]; Shen,CC(Shen,Chuan-Chou)[5]; Gao,YL(Gao,Yongli)[6]; An,ZS(An,Zhisheng)[1,3]
2015
发表期刊Journal of Asian Earth Sciences
卷号106期号:2015页码:150-155
文章类型期刊论文
摘要

Speleothem-based oxygen isotopic sequences have been widely used to reveal regional climatic changes worldwide. However, the climatic significance of speleothem d18O variations in monsoonal China on decadal- to annual timescales remains in debate, which limits its application to paleoclimate reconstruction in the world’s largest country by population. In this study, we analyzed a seasonally resolved d18O record of an annually layered stalagmite, XL21 whose variability covers a period of 98 years (1912–2009 AD), from Xianglong Cave, central China. The annual d18O trend shows an inverse relationship with local monsoon precipitation, suggesting speleothem d18O variations in this area can reflect monsoon precipitation at least on decadal timescale. Changes in moisture sources and transport pathways have little effect on the d18O variations in speleothems/monsoon precipitation on decadal timescale, which may be ascribed to similar distances from this region to the two main moisture sources, the Bay of Bengal and West Pacific. There is an anti-phase relationship between speleothem d18O records from central China and India during the last 98 years, which indicates the relationship between Indian monsoon intensity and speleothem d18O from central China on short timescales requires further investigation.

关键词Speleothem D18o Monsoon Precipitation Decadal Timescale Central China
DOI10.1016/j.jseaes.2015.03.008
收录类别SCI
语种英语
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9448
专题现代环境研究室
作者单位1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS, Xi’an 710075, China;
2.Joint Center for Global Change Studies (JCGCS), Beijing 100875, China;
3.Institute of Global Environmental Change, Xi’an Jiaotong University, Xi’an 710049, China;
4.Department of Earth Sciences, University of Minnesota, Minneapolis 55455, USA;
5.High-Precision Mass Spectrometry and Environment Change Laboratory (HISPEC), Department of Geosciences, National Taiwan University, Taipei 106, Taiwan;
6.Center for Water Research, Department of Geological Sciences, University of Texas at San Antonio, San Antonio 78249, USA
推荐引用方式
GB/T 7714
Tan,LC,Cai,YJ,Cheng,H,et al. Climate significance of speleothem d18O from central China on decadaltimescale[J]. Journal of Asian Earth Sciences,2015,106(2015):150-155.
APA Tan,LC.,Cai,YJ.,Cheng,H.,Edwards,R.L.,Shen,CC.,...&An,ZS.(2015).Climate significance of speleothem d18O from central China on decadaltimescale.Journal of Asian Earth Sciences,106(2015),150-155.
MLA Tan,LC,et al."Climate significance of speleothem d18O from central China on decadaltimescale".Journal of Asian Earth Sciences 106.2015(2015):150-155.
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