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	A 154a high-resolution ammonium record from the Rongbuk Glacier, north slope of Mt. Qomolangma (Everest), Tibet-Himal region
	Hou, SG; Qin, DH; Zhang, DQ; Kang, SC; Mayewski, PA; Wake, CP
发表日期	2003
ISSN	1352-2310
起始页码	721
结束页码	729
卷号	37 期号:5
英文摘要	An 80.4m ice core was recovered from a site at 6500m above sea level on the East Rongbuk Glacier, Mt. Qomolangma (Everest) in August 1998. A total of 1816 samples were analyzed for major ions (Ca Mg Na+,K+, NH4+,SO42-,NO3-, and Cl-) and stable oxygen isotope ratios (delta(18)O). The core was dated by the seasonal variations along the stable isotopic and major ionic profiles, and the dating was verified by the double beta activity peaks corresponding to the annual layers 1963 and 1954, the highest sodium peak corresponding to a major monsoon failure occurred in 1876-1877, and several identified sulfate volcanic signals. The NH4+ level remained fairly constant from 1840s to 1940s, followed by a substantial increase until the end of 1980s, then a slight decrease during the recent decade, which may provide information on change in the regional agriculture activities. (C) 2003 Elsevier Science Ltd. All rights reserved.
英文关键词	Mt. Qomolangma (Everest); ice core; dating; ammonium; agriculture activities
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158731
作者单位	Hou, SG (corresponding author), Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Ice Core & Cold Reg Environm, Lanzhou 730000, Peoples R China.
推荐引用方式 GB/T 7714	Hou, SG,Qin, DH,Zhang, DQ,et al. A 154a high-resolution ammonium record from the Rongbuk Glacier, north slope of Mt. Qomolangma (Everest), Tibet-Himal region[J],2003,37(5).
APA	Hou, SG,Qin, DH,Zhang, DQ,Kang, SC,Mayewski, PA,&Wake, CP.(2003).A 154a high-resolution ammonium record from the Rongbuk Glacier, north slope of Mt. Qomolangma (Everest), Tibet-Himal region.ATMOSPHERIC ENVIRONMENT,37(5).
MLA	Hou, SG,et al."A 154a high-resolution ammonium record from the Rongbuk Glacier, north slope of Mt. Qomolangma (Everest), Tibet-Himal region".ATMOSPHERIC ENVIRONMENT 37.5(2003).