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	Preliminary results from the chemical records of an 80.4 m ice core recovered from East Rongbuk Glacier, Qomolangma (Mount Everest), Himalaya
	Qin, DH; Hou, SG; Zhang, DQ; Ren, JW; Kang, SC; Mayewski, PA; Wake, CP
发表日期	2002
ISSN	0260-3055
起始页码	278
结束页码	284
卷号	35
英文摘要	High-resolution chemical records from an 80.4 m ice core from the central Himalaya demonstrate climatic and environmental changes since 1844. The chronological net accumulation series shows a sharp decrease from the mid-1950s, which is coincident with the widely observed glacier retreat. A negative correlation is found between the ice-core delta(18)O record and the monsoon precipitation for Indian region 7. The temporal variation of the terrestrial ions (Ca2+ and Mg2+) is controlled by both the monsoon precipitation for Indian regions 3,7 and 8, located directly south and west of the Himalaya, and the dust-storm duration and frequency in the northern arid regions, such as the Taklimakan desert, China. The NH4+ profile is fairly flat until the 1940s, then substantially increases until the end of the 1980s, with a slight decrease during the 1990s which may reflect new agricultural practices. The SO42- and NO3- profiles show an apparent increasing trend, especially during the period 1940s-80s. Moreover, SO42- concentrations for the East Rongbuk Glacier core are roughly double that of the nearby Dasuopu core at Xixabangma, Himalaya, due to local human activity including that of climbing teams who use gasoline for cooking, energy and transport.
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
来源期刊	ANNALS OF GLACIOLOGY, VOL 35
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158745
作者单位	Qin, DH (corresponding author), Chinese Acad Sci, Cold & Arid Regions Environm & Engn Res Inst, Lab Ice Core & Cold Regions Environm, Lanzhou 730000, Peoples R China.
推荐引用方式 GB/T 7714	Qin, DH,Hou, SG,Zhang, DQ,et al. Preliminary results from the chemical records of an 80.4 m ice core recovered from East Rongbuk Glacier, Qomolangma (Mount Everest), Himalaya[J],2002,35.
APA	Qin, DH.,Hou, SG.,Zhang, DQ.,Ren, JW.,Kang, SC.,...&Wake, CP.(2002).Preliminary results from the chemical records of an 80.4 m ice core recovered from East Rongbuk Glacier, Qomolangma (Mount Everest), Himalaya.ANNALS OF GLACIOLOGY, VOL 35,35.
MLA	Qin, DH,et al."Preliminary results from the chemical records of an 80.4 m ice core recovered from East Rongbuk Glacier, Qomolangma (Mount Everest), Himalaya".ANNALS OF GLACIOLOGY, VOL 35 35(2002).