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- Title
Lower ionospheric resonance caused by Pekeris wave induced by 2022 Tonga volcanic eruption.
- Authors
Ohya, Hiroyo; Tsuchiya, Fuminori; Takamura, Tamio; Shinagawa, Hiroyuki; Takahashi, Yukihiro; Chen, Alfred B.
- Abstract
The submarine volcano Hunga Tonga–Hunga Ha'apai erupted explosively on January 15, 2022, offering a unique opportunity to investigate interactions between the atmosphere and ionosphere caused by Lamb and Pekeris waves. However, the resonance of Pekeris waves has not been previously detected. In this study, we applied a multi-point monitoring approach focusing on the lower ionosphere and atmospheric electric field. Here we show observed oscillations of 100–200 s in manmade transmitter signals and the magnetic and atmospheric electric fields, which were caused by Pekeris waves. However, no corresponding changes with the period of 100–200 s in atmospheric pressure due to Pekeris waves were observed on the ground. A simulation of neutral wind revealed Pekeris waves oscillating near the mesopause, suggesting resonance. Therefore, the oscillation in atmospheric electric field is interpreted that the resonance in the lower ionosphere was projected onto the Earth's surface via a global electric circuit.
- Subjects
RESONANCE; SUBMARINE volcanoes; SURFACE of the earth; LAMB waves; ATMOSPHERIC tides; VOLCANIC eruptions; ATMOSPHERIC electricity
- Publication
Scientific Reports, 2024, Vol 14, Issue 1, p1
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/s41598-024-65929-x