On the prediction of auroral radio absorption on the equatorial side of the absorption zone

Details On the prediction of auroral radio absorption on the equatorial side of the absorption zone On the prediction of auroral radio absorption on the equatorial side of the absorption zone

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jatp...49..259h&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 49, March 1987, p. 259-272. SERC-supported research.

Physics

3

Auroral Zones, Cosmic Noise, Electromagnetic Absorption, Geomagnetic Latitude, Ionospheric Propagation, Radio Attenuation, Diurnal Variations, Equatorial Atmosphere, Magnetoactivity, Riometers, Sunspots

Scientific paper

Observations of auroral radio absorption made in Finland over the years 1972-1983 have been compiled for use in absorption predictions. The data are presented as values of Q(1), the probability of at least 1 dB absorption being recorded by a 30 MHz riometer, and the results are compared with the predictions of an existing model regarding the latitudinal variation, the influence of solar and magnetic activity indices, and the pattern of daily variation. New formulae for basing absorption predictions on the Ap index are proposed.

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