干旱区生态环境知识资源中心(Arid): Hydrogeochemical characterization and quality assessment of groundwater using self-organizing maps in the Hangjinqi gasfield area, Ordos Basin, NW China

Arid

DOI	10.1016/j.gsf.2020.09.012
	Hydrogeochemical characterization and quality assessment of groundwater using self-organizing maps in the Hangjinqi gasfield area, Ordos Basin, NW China
	Wu, Chu; Fang, Chen; Wu, Xiong; Zhu, Ge; Zhang, Yuzhe
通讯作者	Wu, X (corresponding author), China Univ Geosci Beijing, Sch Water Resources & Environm, Beijing 100083, Peoples R China.
来源期刊	GEOSCIENCE FRONTIERS
ISSN	1674-9871
出版年	2021
卷号	12 期号:2 页码:781-790
英文摘要	Water resources are scarce in arid or semiarid areas, which not only limits economic development, but also threatens the survival of mankind. The local communities around the Hangjinqi gasfield depend on groundwater sources for water supply. A clear understanding of the groundwater hydrogeochemical characteristics and the groundwater quality and its seasonal cyde is invaluable and indispensable for groundwater protection and management. In this study, self- organizing maps were used in combination with the quantization and topographic errors and K-means clustering method to investigate groundwater chemistry datasets. The Piper and Gibbs diagrams and saturation index were systematically applied to investigate the hydrogeochemical characteristics of groundwater from both rainy and dry seasons. Further, the entropy-weighted theory was used to characterize groundwater quality and assess its seasonal variability and suitability for drinking purposes. Our hydrochemical groundwater dataset, consisting of 10 parameters measured during both dry and rainy seasons, was classified into 6 clusters, and the Piper diagram revealed three hydrochemical facies: Cl-Na type (clusters 1, 2 and 3), mixed type (dusters 4 and 5), and HCO3-Ca type (duster 6). The Gibbs diagram and saturation index suggested that weathering of rock-forming minerals were the primary process controlling groundwater chemical composition and validated the credibility and practicality of the clustering results.Two-thirds of 45 groundwater samples were categorized as excellent- or good-quality and were suitable as drinking water. Cluster changes within the same and different clusters from the dry season to the rainy season were detected in approximately 78% of the collected samples. The main factors affecting the groundwater quality were hydrogeochemical characteristics, and dry season groundwater quality was better than rainy season groundwater quality. Based on this work, such results can be used to investigate the seasonal variation of hydrogeochemical characteristics and assess water quality accurately in the others similar area. (C) 2020 Elsevier B.V.
英文关键词	Self-organizing maps Seasonal change Entropy-weighted theory Hydrogeochemical characteristics Groundwater quality
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000611950300021
WOS关键词	RED-RIVER DELTA ; WATER-QUALITY ; SHALLOW GROUNDWATER ; MONITORING DATA ; CHEMISTRY ; DISTRICT ; DRINKING ; AQUIFERS ; REGION ; INDEX
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/367972
作者单位	[Wu, Chu] China Inst Water Resources & Hydropower Res, Dept Water Resources, Beijing 100083, Peoples R China; [Wu, Chu; Wu, Xiong; Zhu, Ge; Zhang, Yuzhe] China Univ Geosci Beijing, Sch Water Resources & Environm, Beijing 100083, Peoples R China; [Fang, Chen] Florida Int Univ, Ctr Adv Technol & Educ CATE, Miami, FL 33174 USA
推荐引用方式 GB/T 7714	Wu, Chu,Fang, Chen,Wu, Xiong,et al. Hydrogeochemical characterization and quality assessment of groundwater using self-organizing maps in the Hangjinqi gasfield area, Ordos Basin, NW China[J],2021,12(2):781-790.
APA	Wu, Chu,Fang, Chen,Wu, Xiong,Zhu, Ge,&Zhang, Yuzhe.(2021).Hydrogeochemical characterization and quality assessment of groundwater using self-organizing maps in the Hangjinqi gasfield area, Ordos Basin, NW China.GEOSCIENCE FRONTIERS,12(2),781-790.
MLA	Wu, Chu,et al."Hydrogeochemical characterization and quality assessment of groundwater using self-organizing maps in the Hangjinqi gasfield area, Ordos Basin, NW China".GEOSCIENCE FRONTIERS 12.2(2021):781-790.