• General Article

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/reso/025/03/0363-0379

    • Keywords

       

      Magnetic field, polarity reversal, axial dipole, polar wander, dipole moment, dip pole.

    • Abstract

       

      The Earth’s magnetic field has been a constant source of curiosityand wonder, for its ubiquitous use in navigation, theproperties of magnetic attraction and the influence and connectionto celestial phenomena like aurora, sunspots, etc.Records of magnetic measurements exist going back 400 years.Modern measurements, with the addition of satellite-borneobservations, provide accuracy and enables understanding ofintriguing characteristics of the geomagnetic field. Some ofthese are: magnetic polarity reversals, wandering of the magneticpoles and the most fundamental one: the origin of thefield in the Earth’s interior and the mechanisms that havesustained it for over a billion years.

    • Author Affiliations

       

      Nandini Nagarajan1

      1. 69, Parklink Road Vayupuri Secunderabad 500 094, India.
    • Dates

       

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