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Earth, Planets and Space
Fig. 13 | Earth, Planets and Space

Fig. 13

From: New aspects of the upper atmospheric disturbances caused by the explosive eruption of the 2022 Hunga Tonga–Hunga Ha’apai volcano

Fig. 13

Dynamic spectra of plasma waves in a frequency range from 3 to 6000 kHz obtained from the PWE-HFA instrument onboard the Arase satellite. The pink and red curves indicate the upper limit frequency of the UHR waves and the electron cyclotron frequency, respectively. The vertical dashed line is the time when the Arase satellite encountered an air pressure wave propagating in the troposphere. The right color bar shows the power spectrum of the electric field in a unite of mV2/m2/Hz

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