Three-dimensional Properties of Interplanetary Disturbances in 1978–1981

  • Takashi Watanabe
  • Takakiyo Kakinuma


This paper presents the average three-dimensional configuration of solar flare- or disappearing filament—associated interplanetary disturbances on the basis of IPS (interplanetary scintillation) and spacecraft observations in 1978–1981. The angular distribution of the propagation speed at 1 AU is largely isotropic over the range of 110° in solar longitude centered at the normal of the solar source. In the latitudinal direction, the characteristic angular extent is about 60°. Thus the three-dimensional shape of an interplanetary disturbance can be approximated by a half of an ellipsoid having an axial ratio of about 1.8.


Solar Wind Solar Flare Propagation Speed Shock Speed Interplanetary Scintillation 
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Copyright information

© D. Reidel Publishing Company 1986

Authors and Affiliations

  • Takashi Watanabe
    • 1
  • Takakiyo Kakinuma
    • 1
  1. 1.Research Institute of AtmosphericsNagoya UniversityToyokawaJapan

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