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Geomagnetism and Aeronomy

, Volume 53, Issue 4, pp 441–447 | Cite as

Geomagnetic activity as a reflection of processes in the magnetospheric tail: 1. The source of diurnal and semiannual variations in geomagnetic activity

  • A. A. Danilov
  • G. F. Krymskii
  • G. A. MakarovEmail author
Article

Abstract

Diurnal and semiannual variations in geomagnetic activity are considered. We prove that there exists an inner magnetospheric source of magnetic activity, which depends on the angle φ between the planes of the magnetotail plasma sheet and the geomagnetic equator. It is shown that diurnal and semiannual variations in magnetic activity result from changes in the value of this angle.

Keywords

Solar Wind Diurnal Variation Interplanetary Magnetic Field Geomagnetic Activity Plasma Sheet 
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

© Pleiades Publishing, Ltd. 2013

Authors and Affiliations

  • A. A. Danilov
    • 1
  • G. F. Krymskii
    • 1
  • G. A. Makarov
    • 1
    Email author
  1. 1.Shafer Institute of Cosmophysical Research and Aeronomy, Siberian BranchRussian Academy of SciencesYakutskRussia

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