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Fig. 2 | Earth, Planets and Space

Fig. 2

From: On the use of ELF/VLF emissions triggered by HAARP to simulate PLHR and to study associated MLR events

Fig. 2

Spectrogram of an electric component recorded onboard DEMETER in the Southern hemisphere between 22:04:40 and 22:05:40 UT, and in the frequency range 0–4 kHz. The power spectral density is color-coded according to the scale on the right. The parameters below the panels indicate the UT, the geographical latitude and longitude, the McIlwain parameter L, and the geomagnetic latitude

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