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Recurrent geomagnetic storms, solarM-regions and the solar wind

Authors
Journal
Planetary and Space Science
0032-0633
Publisher
Elsevier
Publication Date
Volume
12
Issue
2
Identifiers
DOI: 10.1016/0032-0633(64)90115-1
Disciplines
  • Astronomy
  • Earth Science
  • Physics

Abstract

Abstract Evidence is reviewed indicating that the main features of geomagnetic storms of both types are caused by frictional interaction with the solar wind rather than by mere pressure on the geomagnetic cavity. If this is so then recurrent or M-region storms are caused by a property of the (steady) solar wind which controls the frictional interaction. This property is the component of the interplanetary magnetic field in the geomagnetic equatorial plane. Hence M-regionsm are regions above which (projected along the streamlines) the magnetic field is unusually weak or lies at an angle ∼π 2 to this plane.

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