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Hydrogeochemical characteristics of groundwater in coastal phreatic aquifers of Alleppey district, Kerala

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Journal of the Geological Society of India

Abstract

Hydrogeochemical characteristics of groundwater in phreatic aquifers of Alleppey district were studied. Factor analysis has been applied to the chemical analysis data of 32 water samples collected from dug wells to extract the principal factors corresponding to the sources of variation in the hydrochemistry. 12 hydrochemical parameters were correlated and statistically examined. Varimax rotation was used to define the factor scores and percentage of variance in the hydrogeochemistry. A four-factor model is extracted and explains over 80.394% of the total groundwater quality variation. Factor-1 has high loading values of Electrical Conductivity (EC), Ca++, and Cl, and reflects the signature of saline water. Similarly strong correlation exists between F3 score and pH. The correlation coefficient matrix between EC and Na+, Cl, SO −−4 is significant. The mineralogy of coastal aquifers and the marine aerosol are playing significant role in the hydrogeochemistry of groundwater in the phreatic aquifer system.

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Correspondence to E. Shaji.

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Shaji, E., Vinayachandran, N. & Thambi, D.S. Hydrogeochemical characteristics of groundwater in coastal phreatic aquifers of Alleppey district, Kerala. J Geol Soc India 74, 585–590 (2009). https://doi.org/10.1007/s12594-009-0172-z

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  • DOI: https://doi.org/10.1007/s12594-009-0172-z

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