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    • Keywords


      Elliptic polarization; diurnal variation; groundwater investigations; granitic terrain; very low frequency electromagnetic equipment

    • Abstract


      The very low frequency electromagnetic prospecting equipment measures different space and phase components of the electromagnetic field in the frequency range 15–25 kHz emanating from distant naval radio stations. The field application of the equipment designed and constructed for this purpose has demonstrated the usefulness of the investigations in groundwater and geological mapping. The amplitude measurements necessitate correction of the diurnal variations of the electromagnetic field at the observation point.

    • Author Affiliations


      I B Rama Prasada Rao1 R Nagendra1 S L Narasimha Rao1 J Venkatramaiah1

      1. Centre of Exploration Geophysics, Osmania University, Hyderabad - 500 007, India
    • Dates

  • Journal of Earth System Science | News

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      Posted on July 25, 2019

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