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题名: Highly negative oxygen isotopes in precipitation in southwest China and their significance in paleoclimatic studies
作者: Li, YX; Rao, ZG; Cao, JT; Jiang, H; Gao, YL
收录类别: SCIE
出版日期: 2017-06-08
刊名: QUATERNARY INTERNATIONAL
卷号: 440, 页码:64-71
出版者: ELSEVIER
出版地: OXFORD
英文摘要: The moisture carried by the Indian summer monsoon (ISM) is increasingly believed to have an important effect on oxygen isotope in precipitation (delta O-18(p)) in the East Asian summer monsoon (EASM) region. This is mainly based on the spatially coherent variability in the stalagmite oxygen isotopic records (delta O-18(s)) from both the ISM and EASM regions. Based on the comparison of delta O-18(s) records with variable time scales, including the last glacial (36-54 ka BP) and the mid-late Holocene (2-6.5 ka BP), in this paper, we show that the delta O-18(s) values in southwest China were much more negative than in the EASM region of east China, and the behavior of modern delta O-18(p) values is similar. Detailed analyses demonstrated that the highly negative delta O-18(s) and delta O-18(p) values in southwest China could not be explained by any of the altitude, latitude, amount, and temperature effects, and therefore the only interpretation for this phenomenon was might the different moisture sources. The different major moisture sources for southwest and east China were supported by further analyses of the deuterium excess (d-excess) parameter of modern delta O-18(p) and delta D values for both the ISM and EASM regions. The results suggested that the moisture sources for the ISM and EASM regions were might essentially different. Our findings could contribute to a better understanding of the paleoclimatic history in the ISM and EASM regions and their possible interactions. (C) 2016 Elsevier Ltd and INQUA. All rights reserved.
关键词: ISM ; EASM ; Southwest China ; Oxygen isotopes ; Moisture source
作者部门: [Li, Yunxia ; Rao, Zhiguo ; Cao, Jiantao ; Jiang, Hong] Lanzhou Univ, Coll Earth & Environm Sci, Minist Educ, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China ; [Gao, Yongli] Univ Texas San Antonio, Dept Geol Sci, San Antonio, TX 78249 USA
通讯作者: Li, YX (reprint author), Lanzhou Univ, Coll Earth & Environm Sci, Minist Educ, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China.
学科分类: Physical Geography; Geology
文章类型: Article
所属项目编号: National Natural Science Foundation of China [41372181, 41171091] ; Chinese Ministry of Education [113057A]
所属项目名称: 国家自然科学基金项目 ; 教育部科学技术研究重点项目
项目资助者: NSFC ; MOE
语种: 英语
DOI: 10.1016/j.quaint.2016.05.013
ISSN号: 1040-6182
WOS记录号: WOS:000404315300007
IR记录号: WOS:000404315300007
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/189886
Appears in Collections:资源环境学院_期刊论文

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作者单位: 12ENVIROM

Recommended Citation:
Li, YX,Rao, ZG,Cao, JT,et al. Highly negative oxygen isotopes in precipitation in southwest China and their significance in paleoclimatic studies[J]. QUATERNARY INTERNATIONAL,2017,440:64-71.
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