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

	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
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 cycle 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(clusters 4 and 5), and HCO_3-Ca type(cluster 6). The Gibbs diagram and saturation index suggested thatweathering of rock-forming mineralswere 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.
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	CSCD
WOS类目	Mineralogy
CSCD记录号	CSCD:6936743
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377417
作者单位	Wu Chu, Department of Water Resources, China Institute of Water Resources and Hydropower Research;;School of Water Resources and Environment, China University of Geosciences(Beijing), ;;, ;;, Beijing;;Beijing 100083;;100083.; Fang Chen, Center for Advanced Technology and Education(CATE), Florida International University, Miami, 33174, USA.; Wu Xiong, School of Water Resources and Environment, China University of Geosciences(Beijing), Beijing 100083, China.; Zhu Ge, School of Water Resources and Environment, China University of Geosciences(Beijing), Beijing 100083, China.; Zhang Yuzhe, School of Water Resources and Environment, China University of Geosciences(Beijing), Beijing 100083, China.
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.