Skip to main content
Earth, Planets and Space
Fig. 3 | Earth, Planets and Space

Fig. 3

From: Atmospheric modes excited by the 2021 August eruption of the Fukutoku-Okanoba volcano, Izu–Bonin Arc, observed as harmonic TEC oscillations by QZSS

Fig. 3

a High-pass filtered slant TEC time series with various combinations of three stations and satellites of four different GNSS (G, R, E, J indicates GPS, GLONASS, Galileo, and QZSS, respectively). In b, we corrected for the travel time of acoustic wave assuming the propagation velocity of 0.8 km/s and time-variable distances between the volcano and ionospheric piercing points of line-of-sights (altitude assumed as 300 km), to reproduce hypothetical oscillation signals right above the volcano

Back to article page