22-30 July 2021
North-West University
Africa/Johannesburg timezone
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Statistical analysis between Travelling Ionospheric Disturbances (TIDs) and SuperDARN Near Range Echoes (NREs)

Not scheduled
Potchefstroom Campus (North-West University)

Potchefstroom Campus

North-West University

Poster Presentation Track D2 - Space Science Space Science


Alicreance HIYADUTUJE (South African national Space Agency)


The Super Dual Auroral Radar Network (SuperDARN) forms a global network of coherent high frequency (HF) radars located at mid- to high latitudes. Atmospheric gravity waves (AGWs) are ubiquitous throughout the atmosphere and can transport enormous energy and momentum from above or below into the mesosphere. AGWs are readily detected by HF radars as Travelling Ionospheric Disturbances (TIDs) (Oinats et al., 2015). Different mechanisms cause SuperDARN Near Range echoes (NREs) around 100 km altitude. By using cross-correlation and statistical significance analysis, a moderate correlation between the two phenomena was found (Rauf et al., 2019). TIDs amplitudes, wavelengths and velocities are estimated to be 5-15 km, 15-75 km, and 30-70 m/s, respectively (He et al., 2004). The cross-correlation between the TID-perturbed electric field and SuperDARN backscatter power shows a good correlation.
(1) Oinats, Alexey V., Vladimir I. Kurkin, and Nozomu Nishitani. "Statistical study of medium-scale travelling ionospheric disturbances using SuperDARN Hokkaido ground backscatter data for 2011." Earth, Planets and Space 67.1 (2015)
(2) Rauf, Abdur, et al. "Investigation of PMSE dependence on high energy particle precipitation during their simultaneous occurrence." Advances in Space Research 63.1 (2019): 309-316.
(3) He, L-S., et al. "Studies of medium-scale travelling ionospheric disturbances using TIGER SuperDARN radar sea echo observations." Annales Geophysicae. Vol. 22. No. 12. Copernicus GmbH, 2004.

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Primary author

Dr Judy Stephenson (University of KwaZulu Natal)


Alicreance HIYADUTUJE (South African national Space Agency) Prof. Michael Kosch (South African Space Agency)

Presentation Materials