气候变化领域集成服务门户(CCPortal): Heavy dust fall in Beijing, on April 16-17, 2006: Geochemical properties and indications of the dust provenance

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DOI	10.2343/geochemj.42.221
	Heavy dust fall in Beijing, on April 16-17, 2006: Geochemical properties and indications of the dust provenance
	Feng, Jin-Liang; Zhu, Ll-Ping; Ju, Jian-Ting; Zhou, Li-Ping; Zhen, Xlao-Lin; Zhang, Wen; Gao, Shao-Peng
通讯作者	Feng, JL (通讯作者)
发表日期	2008
ISSN	0016-7002
EISSN	1880-5973
起始页码	221
结束页码	236
卷号	42 期号:2
英文摘要	A heavy dust fell in Beijing on April 16-17, 2006. The dust storm formed in middle and western Inner Mongolia, China, under a strong Mongolian Cyclone. During the dust fall, the near-surface wind speed was insignificant in Beijing. The minimal wind speed at ground level indicates that the dust must have been transported by upper northwestern winds, and the local dust of Beijing contributed little to dust fall. The lack of a contribution from local dust differed from previous dust fall events in Beijing. Therefore, this dust fall provides good information on the dust source. Dust samples colleted during this event and Pleistocene loess samples from the Beijing area were analyzed for magnetic susceptibility, bulk particle and quartz grain size distributions, bulk particle and quartz micro-textures, mineralogy, carbonate content, major element concentrations, trace element and rare earth element (REE) concentrations, and the oxygen isotope composition of quartz. The results indicate the following. (1) The dust of the April 2006 storm derives mainly from surface sediments in middle and western Inner Mongolia, with some minor contributions from anthropogenic emissions from coal combustion and mining. (2) The characteristics of the dust fall in China appear to vary with time and location, which has significance for palcoclimate reconstructions. (3) Many characteristics differ between the dust from 2006 event and Pleistocene loess in Beijing, and implying that the two have different sources. (4) The loess deposits found in Beijing and on the Loess Plateau also appear to differ in provenance.
关键词	GRAIN-SIZE DISTRIBUTION CHINESE LOESS OXYGEN ISOTOPES EOLIAN ORIGIN AEOLIAN DUST QUARTZ SILT SOILS TRANSPORT SEDIMENTS DEPOSITS
英文关键词	dust fall; loess; geochemical properties; quartz; oxygen isotope composition; dust provenance
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000261047500007
来源期刊	GEOCHEMICAL JOURNAL
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/257579
推荐引用方式 GB/T 7714	Feng, Jin-Liang,Zhu, Ll-Ping,Ju, Jian-Ting,et al. Heavy dust fall in Beijing, on April 16-17, 2006: Geochemical properties and indications of the dust provenance[J]. 中国科学院青藏高原研究所,2008,42(2).
APA	Feng, Jin-Liang.,Zhu, Ll-Ping.,Ju, Jian-Ting.,Zhou, Li-Ping.,Zhen, Xlao-Lin.,...&Gao, Shao-Peng.(2008).Heavy dust fall in Beijing, on April 16-17, 2006: Geochemical properties and indications of the dust provenance.GEOCHEMICAL JOURNAL,42(2).
MLA	Feng, Jin-Liang,et al."Heavy dust fall in Beijing, on April 16-17, 2006: Geochemical properties and indications of the dust provenance".GEOCHEMICAL JOURNAL 42.2(2008).