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Fig. 8 | Earth, Planets and Space

Fig. 8

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

Fig. 8

An example of Helmholtz resonance excited after a thin film bursts (case 4b). \(V = 6\) \(\text{ cm}^3\) bubble bursts while it is rising in a suspension of \(\phi = 0.4\). a Time-lapse images (see Additional file 4: Movie 4). Red arrows indicate the aperture. b Waveform (detrended, highpass filtered at 800 Hz). c Spectrogram of (b) using a 1.024 ms sliding window and a 1.000 ms overlap. \(\bigcirc\) indicates the \(f_{\mathrm{H}}\) calculated using Eq. (11) and measured \(R_{\mathrm{a}}\)

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