Acoustic-Gravity Lamb Waves from the Eruption of the Hunga-Tonga-Hunga-Hapai Volcano, Its Energy Release and Impact on Aerosol Concentrations and Tsunami

• Published in: Pure and applied geophysics Vol. 179; no. 5; pp. 1533 - 1548
• Main Authors: Kulichkov, S. N., Chunchuzov, I. P., Popov, O. E., Gorchakov, G. I., Mishenin, A. A., Perepelkin, V. G., Bush, G. A., Skorokhod, A. I., Vinogradov, Yu. A., Semutnikova, E. G., Šepic, J., Medvedev, I. P., Gushchin, R. A., Kopeikin, V. M., Belikov, I. B., Gubanova, D. P., Karpov, A. V., Tikhonov, A. V.
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.05.2022; Springer Nature B.V
• Subjects: Acoustic gravity waves; Acoustics; Aerosol concentrations; Aerosol effects; Aerosols; Atmosphere; Atmospheric aerosols; Correlation analysis; Earth and Environmental Science; Earth Sciences; Earthquakes; Energy; Eruptions; Geophysics/Geodesy; Gravity waves; Infrasound; Lamb waves; Microbarographs; Monitoring systems; Phase velocity; Physics; Propagation; Tonga Volcanic Explosion 2022; Tsunamis; Velocity; Volcanic eruptions; Volcanoes; Waveforms; tsunami; Lamb mode; aerosol concentration; nuclear explosion; acoustic gravity waves
• ISSN: 0033-4553; 1420-9136
• DOI: 10.1007/s00024-022-03046-4

The characteristics of acoustic-gravity waves (waveforms, time durations, amplitudes, azimuths and horizontal phase speeds) from the eruption of the Hunga-Tonga-Hunga-Hapai volcano detected at different infrasound stations of the Infrasound Monitoring System and at a network of low-frequency microbarographs in the Moscow region are studied. Using the correlation analysis of the signals at different locations, six arrivals of signals from the volcano, which made up to two revolutions around the Earth, were detected. The Lamb mode of acoustic gravity waves from the volcano eruption is identified and the effect of this mode on generation of tsunami waves and variation of aerosol concentration is studied. The energy released from an underwater volcano into the atmosphere is estimated from the parameters of the Lamb wave and compared with the energy released from the most powerful nuclear bomb of 58 Mt TNT.