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Earth, Planets and Space
Fig. 8 | Earth, Planets and Space

Fig. 8

From: Lightning evolution and VLF perturbations associated with category 5 TC Yasa in the South Pacific Region

Fig. 8

The variation of ionospheric Wait parameters, H′ (first column, red) and β (second column, blue), based on the LWPC modeling of the following NPM signal perturbations: the daytime signal perturbations on a 13 December 2020 at 0:46 UT and b 14 December 2020 at 22:23 UT and the nighttime signal perturbations on c 16 December 2020 at 10:47 UT and d 17 December 2020 at 11:07 UT. The relative distance of the Suva receiver (Rx) from the NPM transmitter is indicated by the arrow pointing downwards

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