Small scale stratification of the mid-latitude F-region

Details Small scale stratification of the mid-latitude F-region Small scale stratification of the mid-latitude F-region

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jatp...49.1007b&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 49, Oct. 1987, p. 1007-1015. Research supported by the Aus

Physics

10

Atmospheric Stratification, F Region, Ionograms, Midlatitude Atmosphere, F 2 Region, Fine Structure, Ray Tracing

Scientific paper

Ionograms recorded over limited frequency and height ranges have been used to reveal systematic structures on both main and range spread traces for a midlatitude region. When disturbances are present ionogram traces are of ten made up of quasi-horizontal segments, suggesting that the F2-layer consists of stratified regions spaced a few kilometers apart vertically. It is proposed that if in fact stratifications are present, they may be produced by instabilities created by the presence of internal gravity waves. Interference effects on ionogram traces are also reported. These are shown to result from the presence of overlapping traces. The existence of these quasi-horizontal trace segments and interference effects is shown to contribute to the diffuseness of a range spread midlatitude ionogram. Thus a midlatitude range spread ionogram often appears diffuse even though the spread may consist primarily of a number of duplicate traces produced by specular reflections from a range of off-vertical angles.

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