Abstract Since 1976 a total of 3500 orbits of data from the Isis-1 and 2, Kyokko and Akebono satellites have been analysed to produce some new observational results about polar VLF and ELF emissions at Arctica and Antarctica. By mapping the distribution of the occurrence of the emissions in the polar regions the source of Electrostatic Ion Cyclotron (EIC) emissions has been located. (1)The EIC emissions with clear harmonic structure at the local ion cyclotron frequency of wide V-shaped auroral hiss emissions were always located at altitudes about 3000 km above an auroral arc. (2)Over 85% of EIC emissions were observed at the active auroral area of the night-side. (3)Direction finding observations using the Akebono satellite showed that all sources of VLF saucers were located below the altitude of the satellite orbit.
On the distribution of polar electrostatic emissions and their relationships to auroral hiss and direction finding measurements of saucer emission in polar regions observed by Isis, Kyokko and Akebono satellites
Advances in Space Research ; 11 , 9 ; 45-50
1991-01-01
6 pages
Article (Journal)
Electronic Resource
English
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