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    • Keywords


      Electromagnetometry; sea floor; electromagnetic variations; conductivity anomaly

    • Abstract


      Electromagnetometry at the sea floor has been developed over the last two decades taking advantage of the progress of positioning and acoustic technology in marine region. In spite of its risks and costs, electromagnetometry at the sea floor has significantly contributed to the study of conductivity anomalies through direct observations of electromagnetic variations at the sea floor. Some of the fruitful results of the ocean bottom observations around Japan as well as data processing of sea floor electromagnetic measurements are reviewed. Future problems in electromagnetometry at the sea floor are also discussed. In conclusion, the importance of establishing semipermanent electromagnetic observatories at the sea floor is emphasized.

    • Author Affiliations


      Jiro Segawa1 Hiroaki Toh1

      1. Ocean Research Institute, The University of Tokyo, 15-1, 1-chome, Minamidai, Nakano-ku, Tokyo - 164, Japan
    • Dates

  • Journal of Earth System Science | News

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      Posted on July 25, 2019

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