干旱区生态环境知识资源中心(Arid): Delineation of groundwater flow and estimation of lake water flushing time using radium isotopes and geochemistry in an arid desert: The case of Badain Jaran Desert in western inner Mongolia (CHN)

Arid

DOI	10.1016/j.apgeochem.2020.104740
	Delineation of groundwater flow and estimation of lake water flushing time using radium isotopes and geochemistry in an arid desert: The case of Badain Jaran Desert in western inner Mongolia (CHN)
	Yi Lixin; Lu Xinyan; Nie Zhenlong; Wang Hongpeng; Cheng Ke; Yang Yongpeng; Li Luxuan
通讯作者	Yi, LX
来源期刊	APPLIED GEOCHEMISTRY
ISSN	0883-2927
EISSN	1872-9134
出版年	2020
卷号	122
英文摘要	The Badain Jaran Desert, located in western Inner Mongolia in northwestern China, is characterized by the coexistence of high megadunes and numerous lakes. The spatial distribution of groundwater systems and supply sources of lakes have yet to be elucidated. Ra isotopes and geochemistry of water samples from 17 lakes and their peripheral groundwater were investigated. The characteristics of the geochemical behaviors of Ra isotopes, including activities, activity ratios, main sources and sinks, and geochemistry both of groundwater and lake water, suggest that there are two groundwater flow systems in the studied area: the southern-central and the northern groundwater flow systems. The southern-central groundwater is supplied from mountains farther to the south and the northern groundwater supplied from areas farther to the north. We developed mass balance models for Ra-228 in fresh and saline lakes. The equation for the saline lakes has three input terms: groundwater discharge, atmospheric deposition and diffusion from bottom sediments; and two outputs: radioactive decay and coprecipitation. The freshwater lake equation has one input term: radionuclide supply from groundwater; and two output terms: adsorption onto particles in the lake and radioactive decay. Mass balance calculations for Ra-228 give discharge fluxes of 0.03 x 10(6)-7.72 x 10(7)m(3) yr(-1) for the lakes. The flushing times of the lakes were estimated to be 0.05-9.23 yrs. The results of this study promote scientific understanding of the hydrologic cycle and water resource evaluation in the Badain Jaran Desert and provide a paradigm for radium isotope application in hydrological research in arid areas.
英文关键词	The badain jaran desert Radium isotopes Groundwater Lake Ra mass balance equations Lake flushing time
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000587914200023
WOS关键词	COASTAL WATERS ; COPRECIPITATION ; RECHARGE ; RA-226 ; INDICATORS ; EVOLUTION ; TRANSPORT ; BEHAVIOR ; RIVERS ; CHINA
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327425
作者单位	[Yi Lixin; Lu Xinyan; Cheng Ke; Yang Yongpeng] Nankai Univ, Coll Environm Sci & Engn, 38 Tongyan Rd, Tianijn, Peoples R China; [Nie Zhenlong] Chinese Acad Geol Sci, Inst Hydrogeol & Environm Geol, 268 Huabei St, Shijiazhuang 050061, Hebei, Peoples R China; [Wang Hongpeng; Li Luxuan] Nankai Univ, Remediat & Pollut Control Urban Ecol Environm, Tianijn, Peoples R China
推荐引用方式 GB/T 7714	Yi Lixin,Lu Xinyan,Nie Zhenlong,et al. Delineation of groundwater flow and estimation of lake water flushing time using radium isotopes and geochemistry in an arid desert: The case of Badain Jaran Desert in western inner Mongolia (CHN)[J],2020,122.
APA	Yi Lixin.,Lu Xinyan.,Nie Zhenlong.,Wang Hongpeng.,Cheng Ke.,...&Li Luxuan.(2020).Delineation of groundwater flow and estimation of lake water flushing time using radium isotopes and geochemistry in an arid desert: The case of Badain Jaran Desert in western inner Mongolia (CHN).APPLIED GEOCHEMISTRY,122.
MLA	Yi Lixin,et al."Delineation of groundwater flow and estimation of lake water flushing time using radium isotopes and geochemistry in an arid desert: The case of Badain Jaran Desert in western inner Mongolia (CHN)".APPLIED GEOCHEMISTRY 122(2020).