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

Fig. 7

From: Excitation of airwaves by bubble bursting in suspensions : regime transitions and implications for basaltic volcanic eruptions

Fig. 7

An example of Helmholtz resonance (large bubble, case 5). \(V = 7\) \(\text{ cm}^3\) bubble bursts while it is rising in a suspension of \(\phi = 0.4\). a Time-lapse images (see Additional file 3: Movie 3). b Waveform (detrended, highpass filtered at 800 Hz). c Spectrogram of (b) using a 2.048 ms sliding window and 2.030 ms overlap. \(\bigcirc\) indicates the \(f_{\mathrm{H}}\) calculated from Eq. (11) using measured \(R_{\mathrm{a}}\)

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