from 28 June 2015 to 3 July 2015 (Africa/Johannesburg)
Africa/Johannesburg timezone
SAIP2015 Proceeding published on 17 July 2016
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Analysis of ionospheric response during geomagnetic storms for mid and low latitudes

Presented by Mrs. Tshimangadzo Merline MATAMBA on 2 Jul 2015 from 11:10 to 11:30
Type: Oral Presentation
Session: Space
Track: Track D2 - Space Science

Abstract

The ionosphere suffer major perturbations during geomagnetic storms called ionospheric storms. Ionospheric storms represent an extreme form of space weather which can have major effects on space-borne and ground based technological systems. Adverse conditions in the space environment can cause a disruption of satellite operations, communications, navigation, and electric power distribution grids leading to a variety of socio- economic losses. This research aims at performing a long term statistical analysis of ionospheric response during geomagnetic storms over the African mid and low latitudes. The statistical results will then be used in the classification or establish the physical mechanisms driving ionospheric dynamics over different latitude regions during disturbed conditions. The Disturbance storm time (Dst) index with a storm criterion of (Dst <= −50 nT) will be used to identify the geomagnetically disturbed conditions. A combination of ionosondes and GPS will provide the ionospheric data needed for the analysis. In addition, in this study we will investigate the statistics of ionospheric storm effects during geomagnetic storms as well as the physical mechanisms of the ionospheric storm effects. The study will also investigate the diurnal, seasonal and solar cycle dependence of the ionospheric storm effects. In addition, this study aims at investigating the contribution of the equatorial ionization anomaly (EIA) and the E×B drifts in determining ionospheric storm effects at different latitudes.

Award

Yes

Level

Phd

Supervisor

Dr John Bosco Habarulema, jhabarulema@sansa.org.za South African National Space Agency (SANSA) Space Science

Paper

No

Permission

Yes

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Co-authors

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