4-8 July 2016
Kramer Law building
Africa/Johannesburg timezone
Paper Review: Initial screening in progress
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Ionospheric Disturbances During Geomagnetic Storm at SANAE

Presented by Mr. Alicreance HIYADUTUJE on 6 Jul 2016 from 10:00 to 10:20
Type: Oral Presentation
Session: Space Science
Track: Track D2 - Space Science

Abstract

It has been reported by many studies that the ionosphere responds differently to different geomagnetic storms depending on their magnitude and time of occurrence. During geomagnetic storms the polar plasma dynamics can influence the middle and low latitude ionosphere via travelling ionospheric disturbances (TIDs). TIDs are a wave-like electron density disturbances caused by atmospheric gravity waves propagating in the ionosphere. The aim of this study is to investigate the ionospheric responses to the storm of 15th July 2012 using total electron content (TEC) and scintillations measurements derived from Global Positioning System (GPS) receiver as well as superDARN relative power at SANAE station and superDARN convection map. TEC results show that this storm had positive storm effect on the ionosphere (i.e. increase in TEC), which commenced in the main phase of the storm and lasted for approximately 8 hours. Both TEC and superDARN power measurements show presence of a TID with period of 39 minutes and amplitude of ~ 0.6 TECU between 12:00 and 16:00 UT. SuperDARN convection map indicates that this TID was caused by instabilities moving at around 200 m/s brought by the heat gradient in the plasma around 9:40 magnetic local time (MLT).

Award

Yes

Level

MSc

Supervisor

Name: Dr Zama Katamzi E-mail: zkatamzi@sansa.org.za Institutions: South African National Space Agency & RU

Paper

No

Permission

Yes

Place

Location: Kramer Law building
Address: UCT Middle Campus Cape Town
Room: 5B


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