High resolution hematite/goethite records from Chinese loess sequences for the last glacial-interglacial cycle: Rapid climatic response of the East Asian Monsoon to the tropical Pacific

doi:10.1029/2003GL018975

IEECAS OpenIR > 黄土与第四纪地质国家重点实验室（1985-2004）

	High resolution hematite/goethite records from Chinese loess sequences for the last glacial-interglacial cycle: Rapid climatic response of the East Asian Monsoon to the tropical Pacific
	Ji, JF; Chen, J; Balsam, W; Lu, HY; Sun, YB; Xu, HF
	2004-02-13
发表期刊	GEOPHYSICAL RESEARCH LETTERS
卷号	31 期号:3
文章类型	Article
摘要	In order to study the variability of dry versus humid conditions resulting from the East Asian monsoon (EAM) we analyzed hematite and goethite from two high-resolution Chinese loess sections by diffuse reflectance spectroscopy. The hematite and goethite concentrations are higher in interglacial paleosols than in glacial loess sediments, whereas the hematite/goethite (Hm/Gt) ratios are lower in paleosols than in loess. Such changes are consistent with higher precipitation and temperature and increased pedogenesis during interglaciation and lower precipitation and temperature and decreased pedogenesis during glaciation. The Hm/Gt ratio can be employed as a tool to assess short-term variations in humidity and aridity of the EAM. The Hm/Gt ratios of the last glacial loess displays millennial-scale abrupt climate oscillations, revealing a pattern of significantly reduced and enhanced summer monsoon moisture. Our results indicate that the EAM responded to tropical Pacific climate by millennial-scale changes in precipitation during the last glaciation.
关键词	hematite and goethite humid and dry Chinese loess
学科领域	Geology
DOI	10.1029/2003GL018975
关键词[WOS]	SURFACE MAGNETIC-SUSCEPTIBILITY ; DUST ACCUMULATION RATE ; PALEOSOL SEQUENCES ; NORTH-ATLANTIC ; PLATEAU ; ICE ; PRECIPITATION ; TEMPERATURE ; DEPENDENCE ; GOETHITE
收录类别	SCI ; SCIE
语种	英语
WOS研究方向	Geosciences, Multidisciplinary
WOS记录号	WOS:000189051200004
出版者	AMER GEOPHYSICAL UNION
引用统计	被引频次：87[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/11936
专题	黄土与第四纪地质国家重点实验室（1985-2004）
推荐引用方式 GB/T 7714	Ji, JF,Chen, J,Balsam, W,et al. High resolution hematite/goethite records from Chinese loess sequences for the last glacial-interglacial cycle: Rapid climatic response of the East Asian Monsoon to the tropical Pacific[J]. GEOPHYSICAL RESEARCH LETTERS,2004,31(3).
APA	Ji, JF,Chen, J,Balsam, W,Lu, HY,Sun, YB,&Xu, HF.(2004).High resolution hematite/goethite records from Chinese loess sequences for the last glacial-interglacial cycle: Rapid climatic response of the East Asian Monsoon to the tropical Pacific.GEOPHYSICAL RESEARCH LETTERS,31(3).
MLA	Ji, JF,et al."High resolution hematite/goethite records from Chinese loess sequences for the last glacial-interglacial cycle: Rapid climatic response of the East Asian Monsoon to the tropical Pacific".GEOPHYSICAL RESEARCH LETTERS 31.3(2004).