Fig. 2
From: Soliton-induced spectrally uniform ion line power enhancements at the ionospheric F region peak
Incoherent scatter radar spectra measured with the 42 m ESR on 5 April 2007. The full time resolution of 6 sec is used and the starting times for each integration are shown for 5 adjacent height gates, which are centred at the altitudes indicated. The x axes show frequency and the y axes show range corrected power spectral density. The spectra at 17:14:30 UT over a longer height range are shown in Fig. 1.