Narrow-band 5 kHz hiss observed in the vicinity of the plasmapause

Details Narrow-band 5 kHz hiss observed in the vicinity of the plasmapause Narrow-band 5 kHz hiss observed in the vicinity of the plasmapause

Jan 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981p%26ss...29...65o&link_type=abstract

Planetary and Space Science, vol. 29, Jan. 1981, p. 65-72.

Physics

9

Emission Spectra, Hiss, Latitude, Plasmapause, Very Low Frequencies, Bandwidth, Midlatitude Atmosphere, Oscillographs, Upper Ionosphere

Scientific paper

Latitudinal distributions of narrow-band 5 kHz hisses have been statistically obtained by using VLF electric field data received from the ISIS-1 and -2 at Syowa station, Antarctica and Kashima station, Japan, in order to study an origin of the narrow-band 5 kHz hisses which are often observed on the ground in mid- and low-latitudes. The result shows that the narrow-band 5 kHz hiss occurs most frequently at geomagnetically invariant latitudes from 55 to 63 deg, which are roughly the plasmapause latitudes at various geomagnetic activities, both in the Northern and Southern Hemispheres. The narrow-band 5 kHz hiss seems to be generated by the cyclotron instabilities of several keV to a few ten keV electrons for the most feasible electron density of 10 to 1000 per cu cm in the vicinity of the equatorial plasmapause.

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