干旱区生态环境知识资源中心(Arid): 西北干寒区冰雪融水氢氧同位素水文地质意义

Arid

	西北干寒区冰雪融水氢氧同位素水文地质意义
其他题名	Hydrogeological Significance of Hydrogen and Oxygen Isotopes in Ice and Snow Melting Water in Northwest Arid Region
	仝晓霞 1; 刘存富 2
来源期刊	环境科学与技术
ISSN	1003-6504
出版年	2018
卷号	41 期号:1 页码:57-63
中文摘要	该文根据Dansgoard氘盈余理论,对中国西北干寒地区(甘肃祁连山-黑河流域、新疆塔什库尔干河流域、青海阿尼玛卿山和西藏羊八井)4个典型研究区大气降水、地表水、冰雪融水、地下水的氢氧同位素组成进行了研究对比;发现冰雪融水和部分地下水的 delta~2H-delta~(18)O信号均位于地方降水线和全球降水线左上方的罕见现象;进一步研究证明了delta~(18)O 、delta~2H和d值在干寒、缺水而有现代冰川分布区研究天然水循环过程有奇特的效果,可以识别地下水是由冰雪融水补给的还是由大气降水补给的,甚至可以区分不同含水层地下水的补给来源,同时分析delta~2H-delta~(18)O信号和氘盈余资料,对判断有冰川、积雪存在地区地下水的补给来源和循环演化具有普遍的水文地质意义和应用价值.
英文摘要	In this study, the hydrogen and oxygen isotopic composition of precipitation, surface water, ice-snow meltwater and groundwater in four typical research areas in arid-cold northwestern China (Qilianshan-Heihe River Basin in Gansu, Tashkurgan River Basin in Xinjiang, Amne Machin in Qinghai and Yangbajing in Tibet) were investigated and compared according to Dansgoard’s deuterium excess theory. A rare phenomenon was found that the delta~2H-delta~(18)O signal of ice-snow meltwater and partial groundwater was located at the upper-left of the local and global precipitation line. The research further suggested that the delta~2H, delta~(18)O and d value were of special significance for investigating the water’s natural circulation in arid-cold areas with ice. This information can be used to determine if the groundwater in a given region is recharged by ice-snow or precipitation, and to distinguish the recharging sources of various aquifers. Overall, the results presented herein indicate that analysis of the delta~2H and delta~(18)O signals concurrently with deuterium excess data can be used to identify a groundwater recharge source and circulation evolution in which ice and snow are present.
中文关键词	氘盈余 ; 中国西北干寒地区 ; 冰雪融水 ; 地下水补给和循环演化
英文关键词	deuterium excess arid-cold areas of northwestern China ice-snow melting water groundwater recharge and circulation evolution
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:6211867
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237863
作者单位	1.中国地质环境监测院, 北京 100081, 中国; 2.中国地质大学环境学院(武汉), 武汉, 湖北 430074, 中国
推荐引用方式 GB/T 7714	仝晓霞,刘存富. 西北干寒区冰雪融水氢氧同位素水文地质意义[J],2018,41(1):57-63.
APA	仝晓霞,&刘存富.(2018).西北干寒区冰雪融水氢氧同位素水文地质意义.环境科学与技术,41(1),57-63.
MLA	仝晓霞,et al."西北干寒区冰雪融水氢氧同位素水文地质意义".环境科学与技术 41.1(2018):57-63.