Physics
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986ge%26ae..26.1011d&link_type=abstract
Geomagnetizm i Aeronomiia (ISSN 0016-7940), vol. 26, Nov.-Dec. 1986, p. 1011-1013. In Russian.
Physics
F Region, Ionograms, Ionospheric Propagation, Critical Frequencies, Ionospheric Electron Density
Scientific paper
Transionograms obtained by the Intercosmos-19 satellite have disclosed the presence of additional or secondary pulses. It is suggested that the occurrence of these so-called transionograms can be explained either by the existence of a region in the ionosphere (in the radio-visibility zone of the satellite) with sharp electron-density gradients or by the existence of a second energy-channeling condition for radio-wave propagation at frequencies above the critical frequency of the F region.
Danilkin N. P.
Ivanov I. I.
Kovalev V. S.
Kushnerevskii Iu. V.
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