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Progress in Earth and Planetary Science
Fig. 10 | Progress in Earth and Planetary Science

Fig. 10

From: Unseasonal development of post-sunset F-region irregularities over Southeast Asia on 28 July 2014: 2. Forcing from below?

Fig. 10

a The 2-day planetary wave packet (1.5–2.5-day bandpass filtered) in the meridional wind from Indian low-latitude station, Kolhapur, during 01 July 2014–31 August 2014. b Amplitude spectra of meridional wind at 80–98 km altitudes showing the quasi-2-day wave periodicity of ~ 48–52 h. c Altitudinal variation of amplitude (red) and phase (black) of quasi-2-day wave taken at 48 h periodicity

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