Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.yqres.2015.09.009 |
Late Plio-Pleistocene humidity fluctuations in the western Qaidam Basin (NE Tibetan Plateau) revealed by an integrated magnetic-palynological record from lacustrine sediments | |
Herb, Christian1; Koutsodendris, Andreas2; Zhang, Weilin1,3; Appel, Erwin1; Fang, Xiaomin3; Voigt, Silke4; Pross, Joerg2 | |
通讯作者 | Appel, Erwin |
来源期刊 | QUATERNARY RESEARCH
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ISSN | 0033-5894 |
EISSN | 1096-0287 |
出版年 | 2015 |
卷号 | 84期号:3页码:457-466 |
英文摘要 | Deciphering the climatic evolution of the Tibetan Plateau region during the Plio-Pleistocene is hampered by the lack of continuous archives and proxy datasets indicative of moisture availability. Here we assess the suitability of magnetic susceptibility (chi) measured on lacustrine sediments as a paleohydrological proxy based on material from drill core SG-1 (2.69-0.08 Ma) from the western Qaidam Basin. Our assessment is based on directly comparing chi with the Artemisia/Chenopodiaceae (A/C) pollen ratio, which represents a sensitive, well-established proxy for moisture changes in arid environments. We find that higher and lower chi values represent drier and less dry conditions, respectively, for the Late Plio-Pleistocene. Less dry phases were likely caused by transiently increased influence of the westerlies and/or decreased influence of the Asian winter monsoon on glacial-interglacial time scales. An exception from this relationship is the interval between similar to 1.9 and 1.3 Ma, when the SG-1 chi record exhibits a 54 ka cyclicity, which may indicate summer monsoon influence on the Qaidam Basin during that time. After similar to 1.3 Ma, the summer monsoon influence may have ceased due to global cooling, with the consequence that the Asian winter monsoon and the westerlies exerted a stronger control on the hydrology of the Qaidam Basin. (C) 2015 University of Washington. Published by Elsevier Inc. All rights reserved. |
英文关键词 | Magnetic proxies Pollen Lacustrine sediments Paleoclimate Monsoon Westerlies Qaidam Basin Tibetan Plateau |
类型 | Article |
语种 | 英语 |
国家 | Germany ; Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000367278200015 |
WOS关键词 | CENOZOIC TECTONIC EVOLUTION ; LOESS-PALEOSOL SEQUENCES ; SOUTH CHINA SEA ; DRILL CORE SG-1 ; CLIMATE-CHANGE ; ASIAN MONSOON ; GRAIN-SIZE ; PROGRESSIVE EVOLUTION ; WINTER MONSOON ; LATE EOCENE |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
WOS研究方向 | Physical Geography ; Geology |
来源机构 | 中国科学院青藏高原研究所 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/190067 |
作者单位 | 1.Univ Tubingen, Dept Geosci, D-72074 Tubingen, Germany; 2.Heidelberg Univ, Inst Earth Sci, Paleoenvironm Dynam Grp, D-69120 Heidelberg, Germany; 3.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China; 4.Goethe Univ Frankfurt, Inst Geosci, D-60438 Frankfurt, Germany |
推荐引用方式 GB/T 7714 | Herb, Christian,Koutsodendris, Andreas,Zhang, Weilin,et al. Late Plio-Pleistocene humidity fluctuations in the western Qaidam Basin (NE Tibetan Plateau) revealed by an integrated magnetic-palynological record from lacustrine sediments[J]. 中国科学院青藏高原研究所,2015,84(3):457-466. |
APA | Herb, Christian.,Koutsodendris, Andreas.,Zhang, Weilin.,Appel, Erwin.,Fang, Xiaomin.,...&Pross, Joerg.(2015).Late Plio-Pleistocene humidity fluctuations in the western Qaidam Basin (NE Tibetan Plateau) revealed by an integrated magnetic-palynological record from lacustrine sediments.QUATERNARY RESEARCH,84(3),457-466. |
MLA | Herb, Christian,et al."Late Plio-Pleistocene humidity fluctuations in the western Qaidam Basin (NE Tibetan Plateau) revealed by an integrated magnetic-palynological record from lacustrine sediments".QUATERNARY RESEARCH 84.3(2015):457-466. |
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