气候变化领域集成服务门户(CCPortal): delta O-18, delta D and d-excess signatures of ground ice in permafrost in the Beiluhe Basin on the Qinghai-Tibet Plateau, China

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DOI	10.3724/SP.J.1226.2017.00038
	delta O-18, delta D and d-excess signatures of ground ice in permafrost in the Beiluhe Basin on the Qinghai-Tibet Plateau, China
	Yang, YuZhong; Wu, QingBai; Jin, HuiJun; Zhang, Peng
发表日期	2017
ISSN	1674-3822
起始页码	38
结束页码	45
卷号	9 期号:1
英文摘要	In this paper, stable isotope (delta O-18, delta D) investigations were completed in ground ice from a deep borehole in the Beiluhe Basin on northern Qinghai-Tibet Plateau to unravel the isotopic variations of ground ice and their possible source water. The delta O-18 and delta D of ground ice show distinctive characteristics compared with precipitation and surface water. The near-surface ground ice is highly enriched in heavier isotopes (delta O-18 and delta D), which were gradually depleted from top to bottom along the profile. It is suggestive of different origin and ice formation process. According to isotopic variations, the ice profile was divided into three sections: the near -surface ground ice at 2.5 m is frozen by the active-layer water which suffered evaporation. It is possible that ground ice between 3 and 4.2 m is recharged by the infiltration of snowmelt. From 5 to 6 m, the ground ice show complex origin and formation processes. Isotopic variations from 6 to 11.1 m and 20.55 m indicate different replenishment water. The calculated slope of freezing line (S=6.4) is larger than the experimental value (5.76), and is suggestive of complex origin and formation process of ground ice.
英文关键词	Qinghai-Tibet Plateau; ground ice; stable isotope; source water; ice formation process
语种	英语
WOS研究方向	Physical Geography
WOS类目	Geography, Physical
WOS关键词	OXYGEN-ISOTOPE ; WATER ; HYDROLOGY
WOS记录号	WOS:000412780800004
来源期刊	SCIENCES IN COLD AND ARID REGIONS
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/240191
作者单位	[Yang, YuZhong; Wu, QingBai; Jin, HuiJun; Zhang, Peng] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, 320 West Donggang Rd, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Yang, YuZhong,Wu, QingBai,Jin, HuiJun,et al. delta O-18, delta D and d-excess signatures of ground ice in permafrost in the Beiluhe Basin on the Qinghai-Tibet Plateau, China[J]. 中国科学院西北生态环境资源研究院,2017,9(1).
APA	Yang, YuZhong,Wu, QingBai,Jin, HuiJun,&Zhang, Peng.(2017).delta O-18, delta D and d-excess signatures of ground ice in permafrost in the Beiluhe Basin on the Qinghai-Tibet Plateau, China.SCIENCES IN COLD AND ARID REGIONS,9(1).
MLA	Yang, YuZhong,et al."delta O-18, delta D and d-excess signatures of ground ice in permafrost in the Beiluhe Basin on the Qinghai-Tibet Plateau, China".SCIENCES IN COLD AND ARID REGIONS 9.1(2017).