干旱区生态环境知识资源中心(Arid): Appraisal of Groundwater Vulnerability Pollution Mapping Using GIS Based GOD Index in Tiruchendur, Thoothukudi District, India

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DOI	10.3390/w15030520
	Appraisal of Groundwater Vulnerability Pollution Mapping Using GIS Based GOD Index in Tiruchendur, Thoothukudi District, India
	Sekar, Selvam; Kamaraj, Jesuraja; Poovalingam, Sivasubramanian; Duraisamy, Radhika; Senapathi, Venkatramanan; Sang Yong, Chung
通讯作者	Sekar, S
来源期刊	WATER
EISSN	2073-4441
出版年	2023
卷号	15 期号:3
英文摘要	Recently, groundwater resources have become the main freshwater supply for human activities worldwide, especially in semi-arid regions, and groundwater pollution from anthropological events is one of the chief environmental problems in built-up and industrial coastal areas. Many researchers around the world have conducted studies to evaluate the impact of groundwater management. For this study, GIS based GOD vulnerability models were used to assess the intrinsic impact and risk of pollution of coastal and irrigated areas in Tiruchendur Taluk, Thoothukudi district in Tamil Nadu. Here, GOD stands for G-Groundwater hydraulic confinement, O-Overlying aquifer strata, and D-Depth to groundwater. The parameters of G, O, and D show that 70% of the study area consists of an unconfined aquifer whose central part often consists of sandstone and fine to medium clay with sand along the coast that acts as an aquifer. The recorded value was 1-28 mbgl. The map of vulnerability using the GOD method shows that 32% of the medium vulnerabilities are located in the almost northern part of the study area, where the main source of pollution is from agricultural land and anthropological activities. A total of 39 groundwater samples were collected from different types of aquifers and used to validate the pollution map, using the EC concentration (230 to 15,480 mu s/cm with an average of 2758 mu s/cm) and NO3- concentration (2 to 120 mg/L with an average of 46 mg/L) in groundwater as indicators of pollution. Finally, we measured how the EC and NO3- parameters represent the medium vulnerability zone of the GOD model based on the pattern of their concentrations in groundwater. Therefore, the GIS with GOD model is the best model among these models for predicting groundwater vulnerability in Tiruchendur Taluk.
英文关键词	groundwater vulnerability GOD Index GIS EC and NO3- parameters
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:000930021800001
WOS关键词	WATER-QUALITY INDEX ; TAMIL-NADU ; COASTAL AQUIFERS ; IRRIGATION ; TUTICORIN ; DRINKING
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398982
推荐引用方式 GB/T 7714	Sekar, Selvam,Kamaraj, Jesuraja,Poovalingam, Sivasubramanian,et al. Appraisal of Groundwater Vulnerability Pollution Mapping Using GIS Based GOD Index in Tiruchendur, Thoothukudi District, India[J],2023,15(3).
APA	Sekar, Selvam,Kamaraj, Jesuraja,Poovalingam, Sivasubramanian,Duraisamy, Radhika,Senapathi, Venkatramanan,&Sang Yong, Chung.(2023).Appraisal of Groundwater Vulnerability Pollution Mapping Using GIS Based GOD Index in Tiruchendur, Thoothukudi District, India.WATER,15(3).
MLA	Sekar, Selvam,et al."Appraisal of Groundwater Vulnerability Pollution Mapping Using GIS Based GOD Index in Tiruchendur, Thoothukudi District, India".WATER 15.3(2023).