Physics
Scientific paper
Nov 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.6687m&link_type=abstract
Journal of Geophysical Research, vol. 84, Nov. 1, 1979, p. 6687-6690.
Physics
1
Atmospheric Physics, Auroral Electrojets, Radio Auroras, Earth Ionosphere, Field Aligned Currents, Geomagnetism, Radar Echoes, Radar Measurement
Scientific paper
It is established within experimental error that the relevant characteristics of diffuse radio aurora seen by the Thompson (48-MHz) radar at high aspect angles (8-14 deg) are the same as those observed by others at low aspect angles. Specifically, during a study of radio aurora in the sunlit auroral oval it was found that the relationship between the intensity of a high-aspect-angle diffuse radio aurora and the magnitude of the geomagnetic disturbance is consistent with that observed by others. McDiarmid and McNamara (1978) have already shown that the same radio aurora is related to field-aligned currents in the way as was previously observed at low aspect angle. These results imply that more definitive work in the neighborhood of 50 MHz at these high aspect angles, which occur at relatively high latitudes (at least about 70 deg), would lead to a significant increase in the understanding of auroral physics.
Mareschal Marianne
McDiarmid D. R.
McNamara Allen G.
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