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Earth, Planets and Space
Fig. 7 | Earth, Planets and Space

Fig. 7

From: Solar flare effects on D-region ionosphere using VLF measurements during low- and high-solar activity phases of solar cycle 24

Fig. 7

Ionospheric D-region parameters H′ and β, found as functions of solar X-ray flare power from the VLF amplitude and phase perturbations of NLK and NWC signals received at Suva during the periods of low- and mid-level (moderate) solar activity. The red points and best-fit lines correspond to low-level solar activity, while the blue points and best-fit lines correspond to mid-level (moderate) solar activity periods

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