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	Spatial mapping of aquifer parameters over basaltic terrain of Maharashtra (India) using geophysical and hydro-geochemical information
	Shailaja, G.; Gupta, G.; Rao, P. Rama
通讯作者	Gupta, G
来源期刊	JOURNAL OF INDIAN GEOPHYSICAL UNION
ISSN	0257-7968
出版年	2018
卷号	22 期号:1 页码:40-48
英文摘要	Integrating the geoelectrical parameters with hydro-geochemical parameters of existing wells, the hydraulic conductivity, transmissivity and porosity of hard rock basaltic aquifers in a part of the semi-arid southeastern region of Maharashtra were estimated. The hydraulic conductivity values were computed using the Kozeny-Carman-Bear (KCB) equation. The spatial variation of aquifer parameters was determined using the ordinary kriging technique. The results suggest that a number of isolated pockets of the study area reveal relatively high value of hydraulic conductivity, porosity and transmissivity. The hydraulic conductivity decreases with increasing bulk electrical resistivity due to possible presence of basaltic rock while, the increase of hydraulic conductivity with decrease of bulk electrical resistivity is presumably due to the good fracture network connectivity in crystalline hard rock. The transmissivity values at certain locations divulge high values (> 380 m(2)/day), which are likely due to the water-saturated fractured medium. The derived transmissivity values are in good agreement with those obtained from well performance data of Central Ground Water Board (CGWB). These zones also have relatively high aquifer thickness and thus represent high potential regions within the water-bearing formations. The spatial variation map of transmissivity reveals a positive relationship with hydraulic conductivity at north-east, southern and western parts of the study area. These findings indicate that such studies would be useful in characterizing the aquifer system over different semi-arid, trap covered regions of India, including Maharashtra.
英文关键词	Vertical electrical sounding hydro-geochemical parameters hydraulic conductivity kriging technique transmissivity porosity Deccan Volcanic Province
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000418760400006
WOS关键词	SHALY SANDSTONES ; CONDUCTIVITY
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/2XILL650/332698
作者单位	[Shailaja, G.; Gupta, G.] Indian Inst Geomagnetism, New Panvel W 410218, Navi Mumbai, India; [Rao, P. Rama] Andhra Univ, Dept Geophys, Visakhapatnam 530003, Andhra Pradesh, India
推荐引用方式 GB/T 7714	Shailaja, G.,Gupta, G.,Rao, P. Rama. Spatial mapping of aquifer parameters over basaltic terrain of Maharashtra (India) using geophysical and hydro-geochemical information[J],2018,22(1):40-48.
APA	Shailaja, G.,Gupta, G.,&Rao, P. Rama.(2018).Spatial mapping of aquifer parameters over basaltic terrain of Maharashtra (India) using geophysical and hydro-geochemical information.JOURNAL OF INDIAN GEOPHYSICAL UNION,22(1),40-48.
MLA	Shailaja, G.,et al."Spatial mapping of aquifer parameters over basaltic terrain of Maharashtra (India) using geophysical and hydro-geochemical information".JOURNAL OF INDIAN GEOPHYSICAL UNION 22.1(2018):40-48.