Pfister's space characterisation of ionospheric movements

Wilson M.J. (1995) Pfister's space characterisation of ionospheric movements. Journal of Atmospheric and Terrestrial Physics, 57 14: 1733-1752. doi:10.1016/0021-9169(95)00094-I


Author Wilson M.J.
Title Pfister's space characterisation of ionospheric movements
Journal name Journal of Atmospheric and Terrestrial Physics
ISSN 0021-9169
Publication date 1995-01-01
Sub-type Article (original research)
DOI 10.1016/0021-9169(95)00094-I
Volume 57
Issue 14
Start page 1733
End page 1752
Total pages 20
Subject 1902 Film, Television and Digital Media
1908 Geophysics
Abstract Pfister's theorem provides a relationship between the velocity of an effective reflecting surface, the Doppler shifts of the reflected radio waves and their angles of arrival. The Bribie Island HF radar measures the Doppler shift, the north-south angle of arrival and the east-west angle of arrival of the ionospheric echo(es). These three dimensions were used to form Pfister's space. The signatures produced by modelled data in this space were used to characterise ionospheric movements. These signatures allowed non-dispersive plane-wave motions, non plane-wave motions which obey Pfister's theorem, dispersive and superposed motions to be distinguished. These different characteristic motions were also identified in a time-series of F-region measurements. Some of the ionospheric motions previously attributed to dispersion may have been produced by superposed disturbances. The day to day variation of how well Pfister's theorem is obeyed may be due to the variability of sources producing disturbances, and therefore superposition effects, and not just dispersion as previously claimed. The individual parameters of superposed disturbances may be difficult to extract using spectral analysis techniques. The wide variety of motions observed at mid-latitudes have important consequences for those techniques which assume a uniform drift of the ionosphere.
Q-Index Code C1
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Tue, 06 Sep 2016, 10:33:46 EST by System User