Ionospheric irregularities observed by topside sounders
- 1 June 1969
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Proceedings of the IEEE
- Vol. 57 (6), 1019-1025
- https://doi.org/10.1109/proc.1969.7146
Abstract
Topside sounders observe electron-density irregularities in the ionosphere with dimensions of hundreds of meters to many kilometers across the magnetic field. Most irregularities are elongated and may extend thousands of kilometers along the field. The variation of electron density is normally a few percent or less. The irregularities tend to occur in patches, in which the individual irregularities vary greatly in size. Irregularities can produce radio echoes by scattering, ducting, or complex refraction, depending on their dimensions. The different kinds of echoes produce different characteristic patterns on topside ionograms, and therefore irregularities in various size ranges may be distinguished and studied.Keywords
This publication has 22 references indexed in Scilit:
- Radio wave reflections from large horizontal gradients in the topside ionosphereProceedings of the IEEE, 1969
- Topside Refractive Irregularities and Travelling Ionospheric DisturbancesAustralian Journal of Physics, 1967
- F-layer ionization troughs deduced from Alouette dataJournal of Geophysical Research, 1965
- F-region irregularities studied by scintillation of signals from satellitesJournal of Research of the National Bureau of Standards, Section D: Radio Science, 1964
- Radio propagation along magnetic field-aligned sheets of lonization observed by the Alouette Topside SounderJournal of Geophysical Research, 1963
- Guidance of radio and hydromagnetic waves in the magnetosphereJournal of Geophysical Research, 1962
- Pulsed radio soundings of the topside of the ionosphere in the presence of spreadFJournal of Geophysical Research, 1962
- The interpretation and synthesis of certain spread-Fconfigurations appearing on equatorial ionogramsJournal of Geophysical Research, 1961
- A survey of the present knowledge of sporadic-E ionizationJournal of Atmospheric and Terrestrial Physics, 1959
- The Use of Radio Stars to Study Irregular Refraction of Radio Waves in the IonosphereProceedings of the IRE, 1958