The moon and the planets

, Volume 27, Issue 4, pp 453–462 | Cite as

Whistler observations of magnetospheric electric field in the night side plasma-sphere at low latitude

  • P. N. Khosa
  • M. M. Ahmad
  • Lal Mani


Whistlers recorded at low latitude ground stations of Gulmarg, Nainital and Varanasi were used to infer the east-west component of electric field on the nightside plasmasphere atL=1.2, 1.12, and 1.07 during magnetic storm periods. The method of measuring electric field from the observed cross-L motions of whistler ducts within the plasma-sphere, indicated by changes in nose frequency of whistlers has been outlined. The nose frequencies of the non-nose whistlers under consideration have been deduced from Dowden-Allocock linear Q-technique. The results show eastward electric fields of 0.7 mVm−1 in the equatorial plane of Gulmarg and ∼0.3 mVm−1 in the equatorial plane of Nainital in the premidnight local time sector. Near midnight, there is a sharp transition from eastward field to a westward electric field of 0.2–0.7 mV m−1 for Gulmarg, 0.3–0.5 mV m−1 for Nainital and 0.1–0.3 mVm−1 for Varanasi.


Local Time Equatorial Plane Magnetic Storm Sharp Transition Time Sector 
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Copyright information

© Reidel Publishing Co 1982

Authors and Affiliations

  • P. N. Khosa
    • 1
  • M. M. Ahmad
    • 1
  • Lal Mani
    • 1
  1. 1.Department of PhysicsRegional Engineering CollegeSrinagar, KashmirIndia

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