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      Permanent link:
      https://www.ias.ac.in/article/fulltext/joaa/029/01-02/0281-0286

    • Keywords

       

      Sudden Storm Commencement (SSC); magnitude of the H component deviation; Interplanetary Magnetic Field (IMF).

    • Abstract

       

      A fluxgate digital magnetometer is used to study the variation of magnitude of H component during geomagnetic storm events of April, July and November 2004 at southern subauroral localized region at “MAITRI” (geom. lat. 62°S, long. 52.8°E). We also study the effect of vertical component of interplanetary magnetic field (IMF) on the variation of the magnitude of H component during storm time of April, July and November 2004. Results show that before sudden storm commencement (SSC) time magnitude ofHcomponent and IMF showsmooth variation but after SSC of first storm of 22 July 2004, the magnitude of the H component shows fluctuations and at 09:00 UT it increases, but during second storm of 24 July 2004, the magnitude of H component indicates large fluctuations and it increases rapidly at 04:00 UT.

    • Author Affiliations

       

      Rajni Devi1 Smita Dubey1 Shailendra Saini1 Babita Devi1 Ajay Dhar2 S. K. Vijay3 A. K. Gwal1

      1. Space Science Laboratory, Department of Physics, Barkatullah University, Bhopal 462 026, India.
      2. Indian Institute of Geomagnetism, New Panvel, Mumbai, India.
      3. Government Geetanjali College, Bhopal, India.
    • Dates

       
  • Journal of Astrophysics and Astronomy | News

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