Mid-latitude spread-F structure

From W.R. and Meehan D.H. (1988) Mid-latitude spread-F structure. Journal of Atmospheric and Terrestrial Physics, 50 7: 629-638. doi:10.1016/0021-9169(88)90061-X

Author From W.R.
Meehan D.H.
Title Mid-latitude spread-F structure
Journal name Journal of Atmospheric and Terrestrial Physics
ISSN 0021-9169
Publication date 1988-01-01
Sub-type Article (original research)
DOI 10.1016/0021-9169(88)90061-X
Open Access Status
Volume 50
Issue 7
Start page 629
End page 638
Total pages 10
Language eng
Subject 1902 Film, Television and Digital Media
1908 Geophysics
Abstract Spread-F has been observed at frequencies of 1.98, 3.84 and 5.80 MHz and multiple angles of arrival have been resolved using an HF radar near Brisbane (27°S, 153°E). The spreading of the ionogram trace has been shown to be due to a spread in angles of arrival of echoes, rather than any 'vertical' spreading. The reflection process appears to involve total specular reflection rather than scattering. The previously reported very strong bias for angles of arrival from the north-west at Brisbane is supported. The direction of movement of the reflection points is not radial and therefore, the structure cannot be purely frontal with purely linear movement, as is often supposed. The velocities are much less than for coexisting travelling ionospheric disturbances. The variations of angle of arrival, range and rate of change of range with frequency do not fit previously proposed ideas of the plasma distribution and an alternative is suggested in which the distortions of the isoionic surfaces resemble small, elongated, asymmetrical 'hills' or 'dips'.
Q-Index Code C1
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
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Citation counts: TR Web of Science Citation Count  Cited 10 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 4 times in Scopus Article | Citations
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Created: Tue, 06 Sep 2016, 11:13:38 EST by System User