Arid
DOI10.1016/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
ISSN0033-5894
EISSN1096-0287
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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