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DOI	10.1016/j.atmosres.2009.06.005
	Rare earth elements in an ice core from Mt. Everest: Seasonal variations and potential sources
	Zhang, Qianggong; Kang, Shichang; Kaspari, Susan; Li, Chaoliu; Qin, Dahe; Mayewski, Paul A.; Hou, Shugui
发表日期	2009
ISSN	0169-8095
EISSN	1873-2895
卷号	94 期号:2
英文摘要	Rare earth element (REE) concentrations in ice samples from the upper 8.4 m of a Mt. Everest ice core retrieved from the col of the East Rongbuk Glacier (28.03 degrees N, 86.96 degrees E, 6518 ma.s.l.) on the northeast ridge of Mt. Everest in September 2002 are presented. REEs display large seasonal variations, with high concentrations in the non-monsoon season and low concentrations in the summer monsoon season. This seasonality is useful for ice core dating. When normalized to a shale standard, the Mt. Everest REEs exhibit a consistent shale-like pattern with a slight enrichment of middle REEs during both seasons. However, individual monsoon REE patterns display differences, possibly resulting from diversified sources. Non-monsoon REE patterns are stable and are associated with the westerlies. Investigation of potential sources for the Everest REEs suggests an absence of anthropogenic contributions and minimal input from local provenances. REEs in Mt. Everest samples are most likely representative of a stable well-mixed REE background of the upper troposphere consisting of a mixture of aerosols transported by the atmospheric circulation from the west windward and regions such as the Thar Desert, West Asia, the Sahara Desert and other uncertain provenances. (C) 2009 Elsevier B.V. All rights reserved.
关键词	Ice core Rare earth elements (REEs)Seasonal variations Potential sources Mt. Everest
学科领域	Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
来源期刊	ATMOSPHERIC RESEARCH
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111532
作者单位	Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100085, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Qianggong,Kang, Shichang,Kaspari, Susan,et al. Rare earth elements in an ice core from Mt. Everest: Seasonal variations and potential sources[J]. 中国科学院西北生态环境资源研究院,2009,94(2).
APA	Zhang, Qianggong.,Kang, Shichang.,Kaspari, Susan.,Li, Chaoliu.,Qin, Dahe.,...&Hou, Shugui.(2009).Rare earth elements in an ice core from Mt. Everest: Seasonal variations and potential sources.ATMOSPHERIC RESEARCH,94(2).
MLA	Zhang, Qianggong,et al."Rare earth elements in an ice core from Mt. Everest: Seasonal variations and potential sources".ATMOSPHERIC RESEARCH 94.2(2009).