Meridional structures of electric potentials relevant to premidnight discrete auroras: A case study from Akebono measurements
- Univ. of Tokyo (Japan)
- Institute of Space and Astronautical Science, Kanagawa (Japan); and others
The authors present satellite measurements from Akebono of auroral structures from UV images, from particle measurements, and from electric field measurements made at altitudes near 10000 km over the polar region in a period of geomagnetic activity. The effort is to correlate the auroral data, and in particular what is observed at lower altitudes, with measurements at these altitudes of precipitation properties, and field values, to infer information on the contribution of altitudes above and below the satellite to acceleration processes which produce observed aurorae. The regions of observed discrete aurorae are compared with the regions exhibiting particle precipitation, which are commonly associated with plasma sheet sources, and found to not be in good alignment. Such observations are correlated with field observations to develop an altitude picture of field structures in the disturbed polar ionosphere.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 232999
- Journal Information:
- Journal of Geophysical Research, Vol. 98, Issue A7; Other Information: PBD: 1 Jul 1993
- Country of Publication:
- United States
- Language:
- English
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