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Identification of groundwater discharge in Cuddalore coast, Tamil Nadu using radium isotopes

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Abstract

For the optimal exploitation and management of coastal aquifers of Tamil Nadu, it is essential to evaluate the groundwater outflow into the sea also called as submarine groundwater discharge. In this study, radium isotopes (223,224Ra) were employed to understand the groundwater discharge in coastal areas of Cuddalore district, Tamil Nadu. Sea water samples (100 L) were collected from various locations of Cuddalore coast in October 2011 and passed through Mn-impregnated acrylic fiber columns. These acrylic columns were analyzed for 223,224Ra activities using radium delayed coincidence counter. The observed higher activities of 223,224Ra excess (0.02 ± 0.001–3.28 ± 0.16 and 64 ± 3–380 ± 19 mBq/100 L respectively) indicate that groundwater discharge occurs in this coastal region.

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Acknowledgments

We would like to thank Dr. U. Saravana Kumar, Head, Isotope Hydrology Section, IAD and Dr. Gursharan Singh, Associate Director RC&IG, BARC for their encouragement throughout this investigation. Mr. Md. Arzoo Ansari is thanked for his help in preparing maps.

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Authors and Affiliations

  1. Isotope Hydrology Section, Isotope Applications Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India

    Diksha Chawla, Noble Jacob & H. V. Mohokar

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  1. Diksha Chawla
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  2. Noble Jacob
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  3. H. V. Mohokar
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Correspondence to Diksha Chawla.

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Chawla, D., Jacob, N. & Mohokar, H.V. Identification of groundwater discharge in Cuddalore coast, Tamil Nadu using radium isotopes. J Radioanal Nucl Chem 300, 29–32 (2014). https://doi.org/10.1007/s10967-014-3004-6

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  • DOI: https://doi.org/10.1007/s10967-014-3004-6

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