Ground-based observations of radio emissions near 2f(ce) and 3f(ce) in the auroral zone

Details Ground-based observations of radio emissions near 2f(ce) and 3f(ce) in the auroral zone Ground-based observations of radio emissions near 2f(ce) and 3f(ce) in the auroral zone

Jul 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993georl..20.1447w&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 20, no. 14, p. 1447-1450.

Physics

32

Auroral Zones, Ground Truth, Ionospheric Electron Density, Radio Emission, Electron Cyclotron Heating, Frequency Ranges, Narrowband

Scientific paper

Narrow band emissions at frequencies near twice and three times the ionospheric electron cyclotron frequency were observed with a ground-based receiver located at Two Rivers (Alaska). The emissions at twice the local ionospheric electron cyclotron frequency (about 2.50-2.80 MHz) appear similar in frequency, intensity, local time dependence, and temporal structure to auroral 'roar' events previously observed at Churchill, Manitoba (Kellogg and Monson, 1979; 1984). The observation of emissions near 3f(ce) (about 3.66-4.24 MHz), sometimes observed simultaneously with the 2f(ce) events, represents a new aspect of this phenomenon. A quantitative theoretical understanding of the phenomenon has not yet been achieved.

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