Channeling of VLF chorus emissions on the plasmapause

Details Channeling of VLF chorus emissions on the plasmapause Channeling of VLF chorus emissions on the plasmapause

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ge%26ae..25..520m&link_type=abstract

Geomagnetizm i Aeronomiia (ISSN 0016-7940), vol. 25, May-June 1985, p. 520-522. In Russian.

Computer Science

Dawn Chorus, Plasmapause, Radio Emission, Vlf Emission Recorders, Auroral Zones, Kp Index, Waveguides

Scientific paper

Simultaneous observations at auroral and subauroral observatories near a geomagnetic meridian are compared in an effort to localize VLF-chorus emission zones at the earth surface. Signals with mean frequencies of 2 and 4 kHz were recorded at the Lovozero and Sogra stations during February-March 1974. It is found that the channeling of VLF waves on the plasmapause during low magnetic activity is a necessary condition of the escape of waves from the equatorial plane to the earth surface. However, this channeling is an insufficient condition for this escape, since even a large density gradient on the plasmapause may not suffice for wave channeling toward the earth surface during electron density increases at the base level and decreases of wave frequency.

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