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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
Article

Abstract

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.

Keywords

Local Time Equatorial Plane Magnetic Storm Sharp Transition Time Sector 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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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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