28 June 2015 to 3 July 2015
Africa/Johannesburg timezone
SAIP2015 Proceeding published on 17 July 2016

Ionospheric pre-geomagnetic disturbance enhancements over African equatorial and midlatitude regions

1 Jul 2015, 15:20
20m
Oral Presentation Track D2 - Space Science Space

Speaker

Ms Nicola Orford (South African National Space Agency)

Level for award<br>&nbsp;(Hons, MSc, <br> &nbsp; PhD, N/A)?

PhD

Abstract content <br> &nbsp; (Max 300 words)<br><a href="http://events.saip.org.za/getFile.py/access?resId=0&materialId=0&confId=34" target="_blank">Formatting &<br>Special chars</a>

The ionosphere is used to reflect high frequency radio signals. In addition, the behaviour of the ionosphere can affect satellites and power grids. The behaviour of both the ionosphere and the magnetosphere as well as the interaction of these two regions is strongly affected by solar activity.

The response of the ionosphere to geomagnetic disturbances has been widely studied. A phenomenon which sometimes accompanies ionospheric storms is known as a pre-storm enhancement and this reaction of the ionosphere has not been as deeply studied as ionospheric storms themselves.

Studies over European latitudes have revealed that pre-storm enhancements accompany approximately 20% of strong storms and occur during both day and night times - with occurrences seen more frequently in winter months. The mechanism behind these pre-storm enhancements remains unknown.

We are exploring this phenomenon over African equatorial and mid-latitude regions in an effort to further understand this phenomenon and to explore its potential in predicting strong ionospheric storms. In particular, we explore three storm periods, namely 11-17 May 2005, 27 September – 3 October 2012 and 14-19 March 2013, using both GPS and ionosonde data.

Apply to be<br> considered for a student <br> &nbsp; award (Yes / No)?

Yes

Main supervisor (name and email)<br>and his / her institution

Dr Z Katamzi, South African National Space Agency

Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?

No

Please indicate whether<br>this abstract may be<br>published online<br>(Yes / No)

Yes

Primary author

Ms Nicola Orford (South African National Space Agency)

Co-author

Dr Zama Thobeka Katamzi (South African National Space Agency)

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