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DOI	10.1002/ppp.1892
	Stable Isotopic Stratification and Growth Patterns of Ground Ice in Permafrost on the Qinghai-Tibet Plateau, China
	Yang, Yuzhong; Wu, Qingbai; Jiang, Guanli; Zhang, Peng
发表日期	2017
ISSN	1045-6740
EISSN	1099-1530
起始页码	119
结束页码	129
卷号	28 期号:1
英文摘要	Stable isotope analysis of ground ice from a deep borehole in permafrost in the Kunlun Mountain Pass on the Qinghai-Tibet Plateau, China, was carried out to assess the water source and origin of the ground ice. Five sections were isotopically distinguished in the borehole. The ground-ice samples had O-18 values ranging from -20.2 to -8.5 parts per thousand (mean: -11.0 parts per thousand), D values from -151.9 to -73.1 parts per thousand (mean: -84.9 parts per thousand) and D-excess values from -16.7 to 9.8 parts per thousand (mean: 2.7 parts per thousand). The isotopic contents and the freezing line (S-O-D(18) = 6.86) of ground-ice samples in the five sections showed significant deviations from modern isotopic values of regional precipitation and surface water, indicating discrepancies in the replenishment of source water and different climatic conditions during periods of ice formation. Near-surface ground ice (0-3 m depth) (D-excess: 9.8 parts per thousand) formed mainly from modern precipitation, whereas deep ground ice was related to the source water and freezing conditions during ice formation. Ground ice from 3.8 to 9.6 m and from 9.6 to 16 m is segregated in origin and a stable freezing front at 9.6 m was identified. Ground ice from 16 to 50 m was replenished by precipitation in the period during ground-ice formation. Between 50 and 91.3 m, ground ice formed in an unstable climate and a palaeo-permafrost table at 91.3m was distinguished. Copyright (c) 2016 John Wiley & Sons, Ltd.
英文关键词	Qinghai-Tibet Plateau; ground ice; stable isotope; permafrost
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geology
WOS关键词	SIBERIAN PERMAFROST ; CANADA ; PRECIPITATION ; WATER ; ANTARCTICA ; NORTH ; GEOCHEMISTRY ; MOISTURE ; REGIONS ; ORIGIN
WOS记录号	WOS:000394429900010
来源期刊	PERMAFROST AND PERIGLACIAL PROCESSES
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/240218
作者单位	[Yang, Yuzhong; Wu, Qingbai; Jiang, Guanli; Zhang, Peng] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Yang, Yuzhong,Wu, Qingbai,Jiang, Guanli,et al. Stable Isotopic Stratification and Growth Patterns of Ground Ice in Permafrost on the Qinghai-Tibet Plateau, China[J]. 中国科学院西北生态环境资源研究院,2017,28(1).
APA	Yang, Yuzhong,Wu, Qingbai,Jiang, Guanli,&Zhang, Peng.(2017).Stable Isotopic Stratification and Growth Patterns of Ground Ice in Permafrost on the Qinghai-Tibet Plateau, China.PERMAFROST AND PERIGLACIAL PROCESSES,28(1).
MLA	Yang, Yuzhong,et al."Stable Isotopic Stratification and Growth Patterns of Ground Ice in Permafrost on the Qinghai-Tibet Plateau, China".PERMAFROST AND PERIGLACIAL PROCESSES 28.1(2017).