Some aspects of large-scale travelling ionospheric disturbances

Bowman G.G. (1992) Some aspects of large-scale travelling ionospheric disturbances. Planetary and Space Science, 40 6: 829-845. doi:10.1016/0032-0633(92)90110-A

Author Bowman G.G.
Title Some aspects of large-scale travelling ionospheric disturbances
Journal name Planetary and Space Science   Check publisher's open access policy
ISSN 0032-0633
Publication date 1992
Sub-type Article (original research)
DOI 10.1016/0032-0633(92)90110-A
Volume 40
Issue 6
Start page 829
End page 845
Total pages 17
Subject 1908 Geophysics
1912 Space and Planetary Science
3103 Astronomy and Astrophysics
Abstract On two occasions the speeds and directions of travel of large-scale travelling ionospheric disturbances (LS-TIDs) following geomagnetic substorm onsets, have been calculated for the propagation of these disturbances in both hemispheres of the Earth. N(h) analyses have been used to produce height change profiles at a fixed frequency from which time shifts between stations (used for the speed and direction-of-travel values) have been calculated. Fixed-frequency phase path measurements at Bribie Island for two events reveal wavetrains with periodicities around 17 min associated with these disturbances. Another event recorded a periodicity of 19 min. Also, for two of the events additional periodicities around 30 min were found. These wavetrains along with the macroscale height changes and electron density depletions associated with these LS-TIDs are essentially the same as the ionospheric structure changes observed during the passage of night-time medium-scale travelling ionospheric disturbances (MS-TIDs). However, unlike these MS-TIDs, the LS-TIDs are generally not associated with the recording of spread-F on ionograms. Possible reasons for this difference are discussed as well as the special conditions which probably prevail on the few occasions when spread-F is associated with LS-TIDs.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
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Citation counts: Scopus Citation Count Cited 13 times in Scopus Article | Citations
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Created: Tue, 26 Jul 2016, 02:23:46 EST by System User