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Holocene climate change inferred from stratigraphy and OSL chronology of aeolian sediments in the Qaidam Basin, northeastern Qinghai-Tibetan Plateau | |
Yu, LP (Yu, LuPeng)[ 1,2,3 ]; Lai, ZP (Lai, ZhongPing)[ 1,3,4 ] | |
2014-05-15 | |
发表期刊 | QUATERNARY RESEARCH |
卷号 | 81期号:3页码:488-499 |
文章类型 | 期刊论文 |
摘要 | Paleoclimatic reconstruction based on aeolian sediments in the eastern Qaidam Basin (QB) has been hindered by the limited chronological data. Here we present 61 Optically Stimulated Luminescence (OSL) ages. On the basis of these OSL ages and the lithologic stratigraphy, we propose the 'effective moisture index (EMI)' for aeolian sediments to reconstruct the effective moisture change. Based on the EMI from twelve sections, the effective moisture change, moisture sources and relevant mechanisms for paleoclimatic change in the eastern QB are discussed. The results indicate that (1) aeolian deposition started at least before 12.4 +/- 0.7 ka during the deglaciation, the paleosols developed at the early and mid-Holocene, and aeolian sand and loess accumulated at mid- and late Holocene; (2) effective moisture history was: hyper-arid at 12.8-11.6 ka, humid and variable at 11.6-8.3 ka, moderately humid and stable at 83-3.5 ka, and increasingly arid at 3.5-0 ka; (3) the effective moisture change was mainly controlled by the Asian summer monsoon (ASM), which mainly followed the change of Northern Hemispheric summer insolation, and the westerlies strengthened and increased the aridity in the QB when the ASM shrank. |
关键词 | Osl Dating Aeolian Activity Holocene Climate Change Asian Summer Monsoon Qaidam Basin Qinghai–tibetan Plateau |
DOI | 10.1016/j.yqres.2013.09.006 |
收录类别 | SCI ; EI |
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/361006/9839 |
专题 | 黄土与第四纪地质国家重点实验室(2010~) |
通讯作者 | Lai, ZP (Lai, ZhongPing)[ 1,3,4 ] |
作者单位 | 1.CAS Key Laboratory of Salt Lake Resources and Chemistry, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 81000, China; 2.Qinghai Geological Survey Institute, Xining 810012, China; 3.State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; 4.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China |
推荐引用方式 GB/T 7714 | Yu, LP ,Lai, ZP . Holocene climate change inferred from stratigraphy and OSL chronology of aeolian sediments in the Qaidam Basin, northeastern Qinghai-Tibetan Plateau[J]. QUATERNARY RESEARCH,2014,81(3):488-499. |
APA | Yu, LP ,&Lai, ZP .(2014).Holocene climate change inferred from stratigraphy and OSL chronology of aeolian sediments in the Qaidam Basin, northeastern Qinghai-Tibetan Plateau.QUATERNARY RESEARCH,81(3),488-499. |
MLA | Yu, LP ,et al."Holocene climate change inferred from stratigraphy and OSL chronology of aeolian sediments in the Qaidam Basin, northeastern Qinghai-Tibetan Plateau".QUATERNARY RESEARCH 81.3(2014):488-499. |
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文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
Holocene climate cha(2199KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 请求全文 |
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