Environmental Earth Sciences

, Volume 71, Issue 1, pp 183–199 | Cite as

Geoelectrical method in the investigation of groundwater resource and related issues in Ophiolite and Flysch formations of Port Blair, Andaman Island, India

  • Shrikant MauryEmail author
  • S. Balaji
Original Article


Geoelectrical resistivity investigation using Vertical Electrical Sounding (VES) technique was conducted at Port Blair, South Andaman Island, to locate the fractures in different formations and to decipher its groundwater potential. A total of 40 VES were carried out covering the entire study area using Schlumberger electrode configuration out of which 34 VES fall in Andaman Flysch formations and the remaining VES in Ophiolite formations. The interpreted resistivity results were integrated with nine borehole lithologs for the subsurface analysis. The combination of VES with borehole litholog data has provided a close correspondence on subsurface hydrogeological conditions. The interpreted VES data of various formations showed drastic variations in the resistivity ranging from higher in Ophiolite, moderate in Andaman Flysch and very low in valleys of Andaman Flysch formations. The study further revealed that the weathered and fractured volcanics of Ophiolite groups of rocks and sandstone that occur in the Andaman Flysch formations constitute the productive water bearing zones categorized as good groundwater potential zone. Based on the geoelectrical parameters, viz., thickness of layers and the layer resistivity values, a groundwater potential map was prepared, in which good, moderate, and poor groundwater zones were demarcated. Further, numerical, spatial and litho-geoelectric models of resistivity were analyzed in terms of groundwater potential and these models have thus enabled to prepare a comprehensive groundwater development and management plans proving its efficacy in this art of exploratory investigations.


Island hydrogeology Groundwater exploration Ophiolite Andaman Flysch Spatial analysis 



The first author is grateful to Prof. D.P. Solomatine, UNESCO-IHE, Delft, The Netherlands for his encouragement. We are thankful to Prof. N. Ramanujam, Department of Disaster Management, Pondicherry University and Mr. M.K. Sirohi, Project Manager, Geo Foundation and Structures (P) Ltd, Port Blair for their endeavor in this work and facilitation of instrument and borehole survey respectively during the field work. And, also grateful to Mr. Anil who has provided transportation service during the field survey. The author is also thankful to Dr. S.K. Ambast, former director of Central Agricultural and Research Institute, Port Blair for his valuable discussion, and Andaman and Nicobar Archives Secretariat, Directorate of Economics and Statistics, Andaman and Nicobar Administration, Port Blair for providing basic references and information during the preparation of this manuscript.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.Department of Disaster ManagementPondicherry UniversityPort BlairIndia

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