Articles | Volume 26, issue 13
https://doi.org/10.5194/acp-26-9559-2026
https://doi.org/10.5194/acp-26-9559-2026
Research article
 | 
08 Jul 2026
Research article |  | 08 Jul 2026

Co-seismic infrasound in the ionosphere over Central Europe from the M8.8 Kamchatka 2025 earthquake observed by Doppler sounding at record heights

Jaroslav Chum, Zbyšek Mošna, Jiří Baše, Jan Zedník, Carsten Schmidt, Patrick Hannawald, Jan Rusz, Jaroslav Urbář, and Šimon Mackovjak

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Cited articles

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Astafyeva, E.: Ionospheric detection of natural hazards, Rev. Geophys. 57, 1265–1288, https://doi.org/10.1029/2019RG000668, 2019. 
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Bass, H. E., Sutherland, L. C., Piercy, J., and Evans, L.: Absorption of sound by the atmosphere, in: Physical Acoustics, Vol. XVII, Chap. 3., edited by: Mason, W. P. and Thurston, R. N., Academic Press, Inc, 145–232, https://ui.adsabs.harvard.edu/abs/1984papm...17..145B/abstract (last access: 19 June 2026), 1984. 
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Short summary
An analysis of unique observations of long period infrasound waves (~200 s) recorded in the ionosphere over Central Europe at record heights by continuous Doppler sounding is presented. The infrasound was generated by the Long-period surface seismic waves induced by the M8.8 Kamchatka earthquake on July 29, 2025. The time delay of the infrasound detection in the ionosphere relative to the vertical motion of the ground surface is consistent with the numerical simulation of infrasound propagation.
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