Ionospheric radiowave absorption during the annular solar eclipse of April 29, 1976

Details Ionospheric radiowave absorption during the annular solar eclipse of April 29, 1976 Ionospheric radiowave absorption during the annular solar eclipse of April 29, 1976

Aug 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978ge%26ae..18..737s&link_type=abstract

Geomagnetizm i Aeronomiia, vol. 18, July-Aug. 1978, p. 737-739. In Russian.

Computer Science

Sound

Electromagnetic Absorption, Ionospheric Propagation, Ionospheric Sounding, Radio Attenuation, Solar Eclipses, Diurnal Variations, E Region, Electron Density (Concentration), Time Dependence

Scientific paper

The effect of the cited annular eclipse on the time variation of ionospheric absorption at frequencies of 1.8, 2.2, and 2.6 MHz over Ashkhabad, USSR, is examined. A slight decrease in absorption with increasing frequency is found along with a moderate increase in E-layer reflection height at all three frequencies. It is shown that at the maximum phase of the eclipse, ionospheric absorption attained a minimum value of 4 dB, which corresponds to nighttime conditions.

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