Multi-instrument detection in Europe of ionospheric disturbances caused by the 15 January 2022 eruption of the Hunga volcano

0555869 - ÚFA 2023 RIV FR eng J - Journal Article
Verhulst, T. - Altadill, D. - Barta, V. - Belehaki, A. - Burešová, Dalia - Cesaroni, C. - Galkin, I. - Guerra, M. - Ippolito, A. - Herekakis, T. - Kouba, Daniel - Mielich, J. - Segarra, A. - Spogli, L. - Tsagouri, I.
Multi-instrument detection in Europe of ionospheric disturbances caused by the 15 January 2022 eruption of the Hunga volcano.
Journal of Space Weather and Space Climate. Roč. 12, Oct 21 (2022), č. článku 35. ISSN 2115-7251. E-ISSN 2115-7251
EU Projects: European Commission(XE) 776011 - TechTIDE
Institutional support: RVO:68378289
Keywords : travelling ionospheric disturbances * volcanic eruption impact on the ionosphere * medium scale TIDs
OECD category: Meteorology and atmospheric sciences
Impact factor: 3.3, year: 2022
Method of publishing: Open access
https://www.swsc-journal.org/articles/swsc/full_html/2022/01/swsc220017/swsc220017.html

The 15 January 2022 eruption of the Hunga volcano provides a unique opportunity to study the reaction of the ionosphere to large explosive events. In particular, this event allows us to study the global propagation of travelling ionospheric disturbances (TIDs) using various instruments. We focus on detecting the ionospheric disturbances caused by this eruption over Europe, where dense networks of both ionosondes and GNSS receivers are available. This event took place on the day of a geomagnetic storm. We show how data from different instruments and observatories can be combined to distinguish the TIDs produced by the eruption from those caused by concurrent geomagnetic activity. The Lamb wavefront was detected as the strongest disturbance in the ionosphere, travelling between 300 and 340 m/s, consistent with the disturbances in the lower atmosphere. By comparing observations obtained from multiple types of instruments, we also show that TIDs produced by various mechanisms are present simultaneously, with different types of waves affecting different physical quantities. This illustrates the importance of analysing data from multiple independent instruments in order to obtain a full picture of an event like this one, as relying on only a single data source might result in some effects going unobserved.
Permanent Link: http://hdl.handle.net/11104/0330487