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DOI	10.1007/BF02887130
	Summer monsoon and dust signals recorded in the Dasuopu firn core, central Himalayas
	Kang, SC; Qin, DH; Yao, TD; Wake, CP; Mayewski, PA
发表日期	1999
ISSN	1001-6538
起始页码	2010
结束页码	2015
卷号	44 期号:21
英文摘要	In September 1997, a 15-m firn core was recovered from an elevation of 7000 m a. s.l, from the Dasuopu Glacier in the central Himalayas. The analysis of delta(18)O values and major ion (Ca2+, Mg2+, NH4+, SO42- and NO3-) concentrations shows that average annual accumulation is 0.75 m (water equivalent) in the Dasuopu firn core. The seasonal variations of delta(18)O values and major ion concentrations in the core indicate that present summer monsoon and dust signals are recorded with high-resolution in the Dasuopu Glacier. delta(18)O in precipitation are controlled by amount effect in summer monsoon season, more negative 6180 is representative of summer monsoon signal in snow layers. Higher concentrations of Ca2+, Mg2+, SO42- and NO3- are dominated by spring dust storm imput derived from the arid and semi-arid desert regions in central Asia. Also EOF analysis verifies that high spring concentrations of major ions are consistent. Due to the possibly different sources, the secondary variations of NH4+ and NO3- are negatively relevant with that of Ca2+ and Mg2+.
英文关键词	firn core; records of summer monsoon and dust signals; central Himalayas
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/158766
作者单位	Kang, SC (corresponding author), Chinese Acad Sci, Lab Ice Core & Cold Reg Environm, Lanzhou Inst Glaciol & Geocryol, Lanzhou 730000, Peoples R China.
推荐引用方式 GB/T 7714	Kang, SC,Qin, DH,Yao, TD,et al. Summer monsoon and dust signals recorded in the Dasuopu firn core, central Himalayas[J],1999,44(21).
APA	Kang, SC,Qin, DH,Yao, TD,Wake, CP,&Mayewski, PA.(1999).Summer monsoon and dust signals recorded in the Dasuopu firn core, central Himalayas.CHINESE SCIENCE BULLETIN,44(21).
MLA	Kang, SC,et al."Summer monsoon and dust signals recorded in the Dasuopu firn core, central Himalayas".CHINESE SCIENCE BULLETIN 44.21(1999).