On the vertical drift of ionospheric F layer during disturbance time: Results from ionosondes

Details On the vertical drift of ionospheric F layer during disturbance time: Results from ionosondes On the vertical drift of ionospheric F layer during disturbance time: Results from ionosondes

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012jgra..11701303s&link_type=abstract

Journal of Geophysical Research, Volume 117, Issue A1, CiteID A01303

Physics

Ionosphere: Equatorial Ionosphere, Ionosphere: Ionospheric Disturbances, Ionosphere: Ionospheric Dynamics

Scientific paper

The morphology of low-latitude ionosphere is greatly affected by the zonal electric field, especially at disturbance time. In this study, historical data from two low-latitude ionosondes located at Haikou and Chongqing, China, are used to study the disturbance vertical drift properties of ionospheric F layer during the initial and main phases of 50 intense storms. The disturbance drift from an empirical model is used as an indicator to denote the E × B disturbance magnitude. It is found that the drifts both at the base and at the peak height are increased in magnitude when the disturbance becomes stronger. For the same disturbance, ionospheric vertical drifts at the base height are comparable with those at the peak height over Haikou, but they are larger than the latter over Chongqing, both drifts being smaller than those at the magnetic equator. The drifts are larger in daytime than in nighttime, but no rule is found on their seasonal dependence. This indicates that low-latitude storm time ionospheric vertical drift of the ionospheric layer exhibits both consistent and individual properties at different locations.

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