干旱区生态环境知识资源中心(Arid): Hydrochemistry in integration with stable isotopes (delta O-18 and delta D) to assess seawater intrusion in coastal aquifers of Kachchh district, Gujarat, India

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DOI	10.1016/j.gexplo.2018.09.013
	Hydrochemistry in integration with stable isotopes (delta O-18 and delta D) to assess seawater intrusion in coastal aquifers of Kachchh district, Gujarat, India
	Maurya, Parul 1; Kumari, Rina 1; Mukherjee, Saumitra 2
通讯作者	Kumari, Rina
来源期刊	JOURNAL OF GEOCHEMICAL EXPLORATION
ISSN	0375-6742
EISSN	1879-1689
出版年	2019
卷号	196 页码:42-56
英文摘要	Coastal aquifers are highly vulnerable to salinization, especially by seawater intrusion. This problem is exacerbated by increasing demands for freshwater in coastal zones due to urbanization and industrialization. This paper investigates seawater intrusion in coastal aquifers of Kachchh district in Gujarat, an economic hub of the country in western India. A total of 26 groundwater samples were collected from various villages of the district from Kandla to Mandavi. In this study hydro-chemical, stable isotope (delta O-18 and delta D) and GIS analysis were used to infer salinization processes. The origin of salinity and mixing of various water masses has been studied through the integration of major ions chemistry with stable isotopes delta O-18 and delta D. Most of the samples were showing Na-Cl type water facies. It was observed that besides natural processes (such as water-rock interaction, ion exchange, dissolution/precipitation dynamics and evaporation) which are governing the groundwater quality, current land use practices have augmented the salinization in this poorly drained semi-arid area. Various ionic ratios (such as Mg2+/Ca2+, Na+/Cl-, SO42-/Cl-, K+/Cl-) and isotopic composition (delta O-18 and delta D) of groundwater suggest that while in coastal areas seawater intrusion and formation of saline plumes is taking place, due to upconing of underlying natural saline water which is enhanced by overexploitation. In inland areas groundwater quality is deteriorating due to infiltration of wastewater and irrigation return flow. The continued stress on land and water resources has shifted the natural balance and accelerated the salinization process in this water scarce region. For securing freshwater in future, the integrated water resources management is required which should also include calculation of groundwater budget in the coastal aquifer.
英文关键词	Hydrochemistry Ionic ratio Seawater intrusion Stable isotopes (delta O-18 and delta D) GIS Coastal aquifers Kachchh district
类型	Article
语种	英语
国家	India
收录类别	SCI-E
WOS记录号	WOS:000451068100005
WOS关键词	GROUNDWATER QUALITY ; SALINE GROUNDWATER ; WATER-INTRUSION ; GODAVARI DELTA ; TAMIL-NADU ; IDENTIFY ; RECHARGE ; ISRAEL ; BASIN ; SALINIZATION
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/2XILL650/217027
作者单位	1.Cent Univ Gujarat, Gandhinagar 382030, India; 2.Jawaharlal Nehru Univ, New Delhi 110067, India
推荐引用方式 GB/T 7714	Maurya, Parul,Kumari, Rina,Mukherjee, Saumitra. Hydrochemistry in integration with stable isotopes (delta O-18 and delta D) to assess seawater intrusion in coastal aquifers of Kachchh district, Gujarat, India[J],2019,196:42-56.
APA	Maurya, Parul,Kumari, Rina,&Mukherjee, Saumitra.(2019).Hydrochemistry in integration with stable isotopes (delta O-18 and delta D) to assess seawater intrusion in coastal aquifers of Kachchh district, Gujarat, India.JOURNAL OF GEOCHEMICAL EXPLORATION,196,42-56.
MLA	Maurya, Parul,et al."Hydrochemistry in integration with stable isotopes (delta O-18 and delta D) to assess seawater intrusion in coastal aquifers of Kachchh district, Gujarat, India".JOURNAL OF GEOCHEMICAL EXPLORATION 196(2019):42-56.