Physics
Scientific paper
May 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jgr....85.2335r&link_type=abstract
Journal of Geophysical Research, vol. 85, May 1, 1980, p. 2335-2340.
Physics
13
Auroral Zones, Electric Current, Electric Fields, Electrodynamics, Field Aligned Currents, Free Convection, E Region, Electrical Resistivity, Electrons, Explorer 12 Satellite, F Region, Ions, Magnetic Fields, Periodic Variations, Plasma Layers, Polar Regions
Scientific paper
The present work extends the study of large subauroral electric fields by using the S3-2 satellite experiments carried out in 1976. The electric field and magnetic field data reveal that the electric field is generated by plasma sheet ions being driven closer to the earth than plasma sheet electrons by magnetospheric convection in the evening sector. If both the F region and the E region are depleted in the strong convection region, there may be a naturally occurring ionization 'hole' through the ionosphere, a region of anomalously low ionization per unit area. A net field-aligned current into the ionosphere through the region leads to the presence of a latitudinal conductivity gradient.
Burke William J.
Kelley Michael C.
Rich Frederic J.
Smiddy Michael
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