Publication Date:
2023-06-01
Description:
The power spectral densities of the micro-barometric, geomagnetic, and GPS-TEC fluctuations at the Phimai station in Thailand showed the sharp peaks of power spectral densities at around 220 and 270 seconds after the passage of the Lamb waves generated in association with the Hunga-Tonga submarine volcanic eruption on January 15, 2022 and orbited the Earth. The sharp spectral peaks were presumed to be caused by a vertical acoustic resonance. Lamb waves are basically sound waves that propagate horizontally in the lower atmosphere, but vertical acoustic resonance is a phenomenon caused by sound waves that propagate in the vertical direction. In this report, we also show the vertical resonance phenomena observed at other stations. The relation with a global amplitude enhancement of magnetic ripples observed by the Swarm satellites is discussed.
Language:
English
Type:
info:eu-repo/semantics/conferenceObject
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