Phys.org  May 22, 2023 Equatorial plasma bubbles which impact satellite-based communications was observed in the Asia-Pacific region after the eruption of the Tonga volcano on January 15, 2022. Researchers in Japan used satellite and ground-based ionospheric observations to demonstrate that an air pressure wave triggered by the Tonga volcanic eruption could cause the emergence of an equatorial plasma bubble. The most prominent observation result showed a sudden increase of electron density and height of the ionosphere several ten minutes to hours before the initial arrival of the air pressure wave in the lower atmosphere. They also found that the propagation […]