Relationships Between Auroral and Magnetic Activity in the Polar Cusp/Cleft

  • Takasi OGUTI
Part of the NATO ASI Series book series (ASIC, volume 278)


Both large- and small-scale dynamics of the cusp aurora and cusp electrodynamics are discussed in connection with electric currents, electric field and ground magnetic perturbations. Sources of the field-aligned electric currents in the dayside polar cusp are most likely located within the boundary layers, both the frontside low latitude and the magnetotai1, where induction currents due to relative motion between the sheath plasma and the magnetosphere produces space charges. The importance of the magnetospheric magnetic field model in the study of the cusp phenomena, especially their magnetospheric source regions, is noted.


Solar Wind Interplanetary Magnetic Field Sheath Plasma Polar Cusp Magnetic Impulse 
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Copyright information

© Kluwer Academic Publishers 1989

Authors and Affiliations

  • Takasi OGUTI
    • 1
  1. 1.Geophysics Research LaboratoryUniversity of TokyoTokyoJapan

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