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Fig. 27 | Progress in Earth and Planetary Science

Fig. 27

From: Review of the accomplishments of mid-latitude Super Dual Auroral Radar Network (SuperDARN) HF radars

Fig. 27

a Model ray paths of HF radar propagation through an ionosphere modulated by a TID. Focusing and defocusing at the ground is caused by the uneven contours of electron density (adapted from Samson et al. (1990)). b Example of FIR radar ground scatter data received along a single beam, versus ground range and universal time, showing several signatures of TID moving toward the radar. Reproduced from Fig. 2 of Grocott et al. (2013)

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