气候变化领域集成服务门户(CCPortal): Environmental implications of the magnetic record in Pleistocene lacustrine sediments of the Qaidam Basin, NE Tibetan Plateau

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DOI	10.1016/j.quaint.2013.06.015
	Environmental implications of the magnetic record in Pleistocene lacustrine sediments of the Qaidam Basin, NE Tibetan Plateau
	Herb, Christian; Zhang, Weilin; Koutsodendris, Andreas; Appel, Erwin; Fang, Xiaomin; Pross, Joerg
通讯作者	Appel, E (通讯作者)
发表日期	2013
ISSN	1040-6182
EISSN	1873-4553
起始页码	218
结束页码	229
卷号	313
英文摘要	The application of magnetic proxies in paleoclimate studies has the advantage of fast and non-destructive measurement procedures, which is an important precondition for obtaining high-resolution datasets within a manageable time frame. Here we demonstrate the advantage of using magnetic proxies for a similar to 940-m-long drill core comprising lacustrine sediments from the Qaidam Basin (NE Tibetan Plateau), which was previously dated by magnetostratigraphy and optical stimulated luminescence (OSL) dating. Comparison of three independent mass-specific magnetic susceptibility (chi) datasets confirms the horizontal homogeneity of the drill core at scales of several cm(3). The potential linkage of chi to astronomical forcing is suggested by spectral analysis. Magnetic grain size- and mineralogy-dependent parameters were used to evaluate possible scenarios explaining the chi variation. Moreover, using additional palynological results we demonstrate the correlation of x with climatic constraints, thereby showing the climate sensitivity of chi. Higher and lower chi values are related to dry and more humid conditions, respectively. Our results lead us to conclude that chi variations are caused by the interference of two driving mechanisms: low-temperature oxidation in the catchment area and a changing catchment area. In summary, this study confirms the informative value of magnetic proxies for detecting paleoenvironmental change in high resolution. (C) 2013 Elsevier Ltd and INQUA. All rights reserved.
关键词	CENOZOIC TECTONIC EVOLUTION LOESS-PALEOSOL SEQUENCES DEEP-SEA SEDIMENTS ROCK MAGNETISM CLIMATE-CHANGE CHINESE LOESS LAKE BAIKAL GRAIN-SIZE CORE SG-1 HYSTERESIS
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000327171200022
来源期刊	QUATERNARY INTERNATIONAL
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258151
推荐引用方式 GB/T 7714	Herb, Christian,Zhang, Weilin,Koutsodendris, Andreas,et al. Environmental implications of the magnetic record in Pleistocene lacustrine sediments of the Qaidam Basin, NE Tibetan Plateau[J]. 中国科学院青藏高原研究所,2013,313.
APA	Herb, Christian,Zhang, Weilin,Koutsodendris, Andreas,Appel, Erwin,Fang, Xiaomin,&Pross, Joerg.(2013).Environmental implications of the magnetic record in Pleistocene lacustrine sediments of the Qaidam Basin, NE Tibetan Plateau.QUATERNARY INTERNATIONAL,313.
MLA	Herb, Christian,et al."Environmental implications of the magnetic record in Pleistocene lacustrine sediments of the Qaidam Basin, NE Tibetan Plateau".QUATERNARY INTERNATIONAL 313(2013).