气候变化领域集成服务门户(CCPortal): Linkage of liquid conductivity of glacier ice with its alkalinity over the north Qinghai-Xizang (Tibet) Plateau

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DOI	10.1360/02yd9032
	Linkage of liquid conductivity of glacier ice with its alkalinity over the north Qinghai-Xizang (Tibet) Plateau - Implication to the past dust recovery
	Xiao, CD; Yao, TD; Qin, DH; Seko, K; Pu, JC; Sheng, WK
发表日期	2002
ISSN	1006-9313
起始页码	300
结束页码	310
卷号	45 期号:4
英文摘要	Liquid conductivity (EC) measurement was conducted for the samples collected from several snow pits and ice cores over the Qinghai-Xizang (Tibet) Plateau, with their time range covering seasonal, decadal and centennial scales. Unlike the previous attention mostly focused on the acidity (W) responding to the solid conductance (ECM) of glacial ice, we introduce the alkalinity (OH-) of snow and ice to show how it responds to EC. Strong linear relationship was established between EC and OH- for these snow pits and ice cores. Positive correlation is also established between EC and major cations (Ca2+,Mg2+, Na+ and K+). Since the cations are known as the proxies for the intensity of mineral dust influx onto glaciers of the northern Qinghai-Xizang Plateau, we believe that EC could be used as an indicator for the history of dust input in deep ice core study. In fact, records in Guliya ice core since the Little Ice Age (LIA) indicate that dust load in glacier may depend on the combination of temperature and humidity. Cold-dry combination favors the dust arising, and results in higher EC and OH- values, while warm-wet combination prevents dust form and EC and OH- values are lower. In the past century, with the atmospheric warming and precipitation increasing over the northern plateau, which means an atmospheric condition of dust decreasing, both EC and OH- displayed rapid decline.
英文关键词	liquid conductivity (EC); Qinghai-Xizang (Tibet) Plateau; Asia dust; climatic change
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
来源期刊	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158741
作者单位	Xiao, CD (corresponding author), Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lab Ice Core & Cold Reg Environm, Lanzhou 730000, Peoples R China.
推荐引用方式 GB/T 7714	Xiao, CD,Yao, TD,Qin, DH,et al. Linkage of liquid conductivity of glacier ice with its alkalinity over the north Qinghai-Xizang (Tibet) Plateau - Implication to the past dust recovery[J],2002,45(4).
APA	Xiao, CD,Yao, TD,Qin, DH,Seko, K,Pu, JC,&Sheng, WK.(2002).Linkage of liquid conductivity of glacier ice with its alkalinity over the north Qinghai-Xizang (Tibet) Plateau - Implication to the past dust recovery.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,45(4).
MLA	Xiao, CD,et al."Linkage of liquid conductivity of glacier ice with its alkalinity over the north Qinghai-Xizang (Tibet) Plateau - Implication to the past dust recovery".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 45.4(2002).