Auroral Substorms Observed by UV-Imager on Akebono
- Joseph R. Kan,
- Thomas A. Potemra,
- Susumu Kokubun and
- Takesi Iijima
Published Online: 19 MAR 2013
Copyright 1991 by the American Geophysical Union.
How to Cite
Kaneda, E. and Yamamoto, T. (1991) Auroral Substorms Observed by UV-Imager on Akebono, in Magnetospheric Substorms (eds J. R. Kan, T. A. Potemra, S. Kokubun and T. Iijima), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM064p0235
- Published Online: 19 MAR 2013
- Published Print: 1 JAN 1991
Print ISBN: 9780875900308
Online ISBN: 9781118663981
- Magnetospheric substorms—Congresses
We have studied global aurora dynamics by the analyses of high time resolution UV-images acquired on the AKEBONO satellite. The substorm expansion onset is one of challenging targets in studies of global aurora dynamics. It is confirmed that the expansion onset is constituted by succeeding two stages. The first stage is the initial brightening within a localized region of 1 hour longitudinal extent and continues for several minutes. The succeeding one is the flaring-up, which follows the former and accompanies breakup aurora displays including bulge-surge formation.