Storm‐Time Observations of Traveling Ionospheric Disturbances and Ionospheric Irregularities in East Africa

In this paper equatorward propagating large scale traveling ionospheric disturbance (LSTID) on 17 March 2015 were investigated using the Statistical Angle-of-Arrival and Doppler Method for GPS (SADM-GPS) radio interferometry technique in data-scarce East Africa. To apply SADM-GPS method, 5 arrays each with 3 receivers arranged a triangular geometry used. Our results show that during 15:00–18:00 UT March, TIDs mean horizontal velocities between 161.9 464.4 m/s observed. Using wavelet analysis, periods of range 51–69 min qualify to LSTIDs revealed. The peak-to-peak phase shift detrended total electron content (TEC) over latitudes study confirms TID propagation, which was obtained by technique. A pair magnetometers used infer E × B drift an adequate agreement found Swarm satellites derived plasma density enabled us explain behaviour irregularity main geomagnetic storm. Moreover, significant TEC enhancement (reaching ∼20%–105%) captured period propagation. Nevertheless, rate change (ROT) ROT index (ROTI) wavy structures reflect effects modulations post noon evening hours 2015.