Computer Science – Sound
Scientific paper
Oct 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988angeo...6..573p&link_type=abstract
Annales Geophysicae (ISSN 0980-8752), vol. 6, Oct. 1988, p. 573-586. Research supported by the Swedish Board for Space Activitie
Computer Science
Sound
38
Auroral Zones, Electromagnetic Noise Measurement, Kilometric Waves, Satellite Sounding, Broadband, Bursts, Electron Beams, Viking Spacecraft
Scientific paper
Viking satellite high-frequency wave receiver data for auroral zones at 1-2 earth radii altitudes exhibit many intense bursts of broadband electrostatic turbulence in the auroral kilometric radiation (AKR) generation regions. The broadband noise is primarily observed at the equatorial and polar edges of the source regions of AKR that are characterized by steep gradients of the cold electron density. Theoretical processes which could be invoked to explain the observations are discussed; attention is given to the interpretation in which the low-frequency part of the bursts consists of intense lower hybrid waves and whistler mode waves that are trapped within small-scale enhanced density structures.
Bahnsen Axel
Eliasson Lars
Malingre Michel
Pottelette Raymond
Stasiewicz Krzysztof
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