• Ground-based optical measurements of daytime auroral emissions: A new means of investigating space-weather related processes

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    • Keywords


      Daytime-aurora; space-weather; auroral photometry; plasmapause related processes

    • Abstract


      The first optical signatures of plasmapause associated processes were gleaned from the daytime auroral emissions monitored from Maitri, the Indian station in Antarctica, using the newly built, ground-based, Multiwavelength Daytime Photometer (MWDPM). The plasmapause boundary inferred from these measurements conforms well with the known empirical relationship with the geomagnetic indexKp. The measurements made at 391.4, 486.1, 557.7 and 630.0 nm emissions revealed significant day-to-day variations in their spatial and temporal extents. These preliminary results are presented and discussed.

    • Author Affiliations


      D Pallam Raju1 R Sridharan1

      1. Physical Research Laboratory, Navrangpura, Ahmedabad - 380009, India
    • Dates

  • Journal of Earth System Science | News

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      Posted on July 25, 2019

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