气候变化领域集成服务门户(CCPortal): Geochemical characteristics and zones of surface snow on east Antarctic Ice Sheet

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DOI	10.1360/03wd0355
	Geochemical characteristics and zones of surface snow on east Antarctic Ice Sheet
	Kang, JC; Liu, LB; Qin, DH; Wang, DL; Wen, JH; Tan, DJ; Li, ZQ; Li, J; Zhang, XW
发表日期	2004
ISSN	1001-6538
起始页码	2205
结束页码	2211
卷号	49 期号:20
英文摘要	The surface-snow geochemical characteristics are discussed on the East Antarctic Ice Sheet, depending on the stable isotopes ratios of oxygen and hydrogen, concentration of impurities (soluble-ions and insoluble micro-particle) in surface snow collected on the ice sheet. The purpose is to study geochemical zones on the East Antarctic Ice Sheet and to research sources and transportation route of the water vapor and the impurities in surface snow. It has been found that the ratio coefficients, as S-1, d(1) in the equation deltaD = S(1)delta(18)O + d(1), are changed near the elevation 2000 m on the ice sheet. The weight ratio of Cl-/Na+ at the area below the elevation of 2000 m is close to the ratio in the sea salt; but it is about 2 times that of the sea salt, at the inland area up to the elevation of 2000 m. The concentrations of non-sea-salt Ca2+ ion (nssCa(2+)) and fine-particle increase at the interior up to the elevation 2000 m. At the region below the elevation of 2000 m, the impurity concentration is decreasing with the elevation increasing. Near coastal region, the surface snow has a high concentration of impurity, where the elevation is below 800 m. Combining the translating processes of water-vapor and impurities, it suggests that the region up to the elevation 2000 m is affected by large-scale circulation with longitude-direction, and that water-vapor and impurities in surface snow come from long sources. The region below the elevation 2000 m is affected by some strong cyclones acting at peripheral region of the ice sheet, and the sources of water and impurities could be at high latitude sea and coast. The area below elevation 800 m is affected by local coastal cyclones.
英文关键词	Antarctic Ice Sheet; snow; geochemical zones
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
来源期刊	CHINESE SCIENCE BULLETIN
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158713
作者单位	Kang, JC (corresponding author), Polar Res Inst China, Shanghai 200129, Peoples R China.
推荐引用方式 GB/T 7714	Kang, JC,Liu, LB,Qin, DH,et al. Geochemical characteristics and zones of surface snow on east Antarctic Ice Sheet[J],2004,49(20).
APA	Kang, JC.,Liu, LB.,Qin, DH.,Wang, DL.,Wen, JH.,...&Zhang, XW.(2004).Geochemical characteristics and zones of surface snow on east Antarctic Ice Sheet.CHINESE SCIENCE BULLETIN,49(20).
MLA	Kang, JC,et al."Geochemical characteristics and zones of surface snow on east Antarctic Ice Sheet".CHINESE SCIENCE BULLETIN 49.20(2004).