NDLI: Identification of the sources for groundwater salinization in the coastal aquifers of Southern Tamil Nadu, India

Content Provider	Springer Nature Link
Author	Pratheepa, V. Ramesh, S. Sukumaran, N. Murugesan, A. G.
Copyright Year	2015
Abstract	The increasing demand of water resources leads to decline the groundwater table, and it leads to saline intrusion in the aquifers of coastal areas. Hence, the need for monitoring and identification of saline intrusion in groundwater is to be recognized for sustainable utilization of that precious resource. A detailed hydro-chemical study was undertaken to identify the sources of groundwater salinization in the coastal aquifers of Southern Tamil Nadu, India. The present investigation of hydro-chemical study infers that the groundwater samples in the study area are generally characterized by fresh to brackish, moderately hard to very hard and alkaline in nature. The Piper plot shows that most of the groundwater samples in the north-eastern region were Na$^{+}$–Cl$^{−}$ type, while in the south-west and the western region no particular cation shows clear dominance. Though, the dominance of chloride was observed throughout the study area. The investigation of hydro-chemical evolution reveals that sea water intrusion may be possible for the source of groundwater salinization in the aquifers of the north-eastern region, whereas reverse ion exchange is the major process for controlling the hydro-chemical evolution of groundwater in the south-west and the western region. The results of principal component analysis and hierarchical cluster analysis are also concomitant with the hydro-chemical interpretations.
Starting Page	2819
Ending Page	2829
Page Count	11
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	74
Issue Number	4
e-ISSN	18666299
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-03-26
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Groundwater Sea water intrusion Piper plot Multivariate statistics Southern Tamil Nadu Geology Hydrology/Water Resources Geochemistry Environmental Science and Engineering Terrestrial Pollution Biogeosciences
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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