干旱区生态环境知识资源中心(Arid): 藏南干旱区湖泊及地热水体氢氧同位素研究

Arid

	藏南干旱区湖泊及地热水体氢氧同位素研究
其他题名	Hydrogen and Oxygen Isotopes of Lake Water and Geothermal Spring Water in Arid Area of South Tibet
	肖可 1; 沈立成 1; 王鹏 2
来源期刊	环境科学
ISSN	0250-3301
出版年	2014
卷号	35 期号:8 页码:2952-2958
中文摘要	青藏高原水循环过程情况复杂,水体氢氧同位素包含了其重要信息. 选取西藏南部干旱区淡水湖、咸水湖及地热水水体为研究对象,分析研究区内不同水体氢氧同位素组成、变化特征、影响因素及水循环过程. 结果表明,3种水体均表现出了高海拔地区氢氧同位素组成偏负的特点,淡水湖打加芒错delta~(18)O平均值为-17.0,deltaD平均值为-138.6,咸水湖朗错delta~(18)O平均值为-6.4,deltaD平均值为-87.4,搭格架地热区热水delta~(18)O平均值为-19.2,deltaD平均值为-158.2; 受内陆干旱区强烈的蒸发作用影响,湖泊及地热水蒸发线斜率均小于8,氘过量d值均为负值; 搭格架地热区热储温度较高,氢氧同位素关系存在氧漂移现象.
英文摘要	The condition of water cycles in Tibet Plateau is a complex process, and the hydrogen and oxygen isotopes contain important information of this process. Based on the analysis of isotopic composition of freshwater lake, saltwater lake and geothermal water in the southern Tibetan Plateau, this study investigated water cycling, composition and variation of hydrogen and oxygen isotopes and the influencing factors in the study area. The study found that the mean values of delta~(18)O and deltaD in Daggyaima lake water (-17.0 for delta~(18)O and -138.6 for deltaD), Langcuo lake water (-6.4 for delta~(18)O and -87.4 for deltaD) and Dagejia geothermal water (-19.2 for delta~(18)O and -158.2 for deltaD) all showed negative delta~(18)O and deltaD values in Tibetan Plateau by the influence of altitude effects. Lake water and geothermal water were influenced by evaporation effects in inland arid area, and the slope of evaporation line was less than 8.Deuterium excess parameters of lake water and geothermal water were all negative. The temperature of geothermal reservoirs in Dagejia geothermal field was high,and oxygen shift existed in the relationship of hydrogen and oxygen isotopes.
中文关键词	湖泊 ; 地热水 ; 氢氧同位素 ; 氘盈余 ; 青藏高原
英文关键词	lakes geothermal water hydrogen and oxygen isotopes deuterium excess Tibet Plateau
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:5206728
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231354
作者单位	1.西南大学地理科学学院, 三峡库区生态环境教育部重点实验室, 重庆 400715, 中国; 2.中山大学地理科学与规划学院, 广州, 广东 510275, 中国
推荐引用方式 GB/T 7714	肖可,沈立成,王鹏. 藏南干旱区湖泊及地热水体氢氧同位素研究[J],2014,35(8):2952-2958.
APA	肖可,沈立成,&王鹏.(2014).藏南干旱区湖泊及地热水体氢氧同位素研究.环境科学,35(8),2952-2958.
MLA	肖可,et al."藏南干旱区湖泊及地热水体氢氧同位素研究".环境科学 35.8(2014):2952-2958.