The delayed occurrence of equatorial ionospheric F2 layer post-sunset height decreases following auroral-zone substorm onsets

Bowman, G. G. and Mortimer, I. K. (2010) The delayed occurrence of equatorial ionospheric F2 layer post-sunset height decreases following auroral-zone substorm onsets. Journal of Atmospheric and Solar-Terrestrial Physics, 72 2-3: 234-240. doi:10.1016/j.jastp.2009.11.016


Author Bowman, G. G.
Mortimer, I. K.
Title The delayed occurrence of equatorial ionospheric F2 layer post-sunset height decreases following auroral-zone substorm onsets
Formatted title
The delayed occurrence of equatorial ionospheric F2 layer post-sunset height decreases following auroral-zone substorm onsets
Journal name Journal of Atmospheric and Solar-Terrestrial Physics   Check publisher's open access policy
ISSN 1364-6826
1879-1824
Publication date 2010-02-01
Year available 2009
Sub-type Article (original research)
DOI 10.1016/j.jastp.2009.11.016
Open Access Status
Volume 72
Issue 2-3
Start page 234
End page 240
Total pages 7
Place of publication Oxford, United Kingdom
Publisher Pergamon
Language eng
Formatted abstract
Nighttime F2 layer height decreases have been examined for post-sunset intervals at the equatorial station, Huancayo. The analyses involved mainly Rz max years, (1957-1960), although Rz min years (1974-1977) were also used. The data were obtained from tabulations of the ionogram parameters h'F, fF2 and fEs. The height reductions are delayed by more than 7 h following geomagnetic substorm onsets for locations at longitudes to the east. The reduced occurrence of spread-F and fEs enhancements is found to be associated. These enhancements are also recorded at the European station, Dourbes about 4.5 h before the Huancayo enhancements. It is proposed that an LS-TID which propagates in the 80 km sound channel may be involved. Also, the experimental evidence suggests that the westward propagation of the LS-TIDs allows equatorial disturbances to occur at local times (before midnight) which are similar to the times when the LS-TIDs are generated. © 2009 Elsevier Ltd. All rights reserved.
Keyword F-2 layer ionospheric disturbances
Neutral particle density
The influence of LS-TIDs
Equatorial ionosphere
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 3 December 2009

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2011 Collection
 
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Created: Sun, 14 Mar 2010, 10:04:17 EST