Remarks on the Growth Phase of Substorms

  • L. Rossberg
Part of the Astrophysics and Space Science Library book series (ASSL, volume 44)


A pre-bay poleward expansion of 30 > keV electron intensities near midnight is shown to be coincident with the maximum phase of a plasma sheet expansion in the predawn sector of the Vela orbit. A study of simultaneous particle observations by ATS 1 and 5, and of perturbations of the horizontal component of the magnetic field on ground in the auroral zone, shows that one can arrive at two different conclusions about the relevant substorm phase. Based on the results of a multi-satellite study it is suggested to supplement the search for growth phase phenomena by a more general consideration of the varying modes of energy release into the auroral zone.


Interplanetary Magnetic Field Plasma Sheet Auroral Zone Vertical Break Line Dawn Sector 
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Copyright information

© D. Reidel Publishing Company, Dordrecht-Holland 1974

Authors and Affiliations

  • L. Rossberg
    • 1
  1. 1.Institut für Stratosphären-PhysikMax-Planck-Institut für AeronomieLindau/HarzGermany

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