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\begin{document}

\title{Signature of Tonga Volcanic Eruption in the ionosphere over South
America}



\author[1]{Hisao Takahashi}%
\author[1]{Cosme Alexandre O. B. Figueiredo}%
\author[2]{Diego Barros}%
\author[1]{Cristiano M. Wrasse}%
\author[3]{Gabriel Augusto Giongo}%
\author[1]{Rogerio H. Honda}%
\author[1]{Luiz F. R. Vital}%
\author[4]{Laysa Cristina Araujo Resende}%
\author[5]{Prosper Kwamla Nyassor}%
\author[1]{Toyese Tunde Ayorinde}%
\author[1]{Carolina S Calmo}%
\author[5]{Marcelo Banik de Padua}%
\author[6]{Yuichi Otsuka}%
\affil[1]{Instituto Nacional de Pesquisas Espaciais}%
\affil[2]{Unknown}%
\affil[3]{Southern Regional Space Research Center}%
\affil[4]{National Institute for Space Research/China-Brazil Joint Laboratory of Space Weather}%
\affil[5]{National Institute for Space Research}%
\affil[6]{Nagoya University}%


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  \date{May 24, 2024}


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\begin{abstract}
On January 15, 2022, we observed various unusual atmospheric wave events
over the South American sector: Atmospheric pressure waves (Lamb mode)
around 12:30 to 17:30 UT, Tsunamis along the Chile coast at around 17:00
to 19:00 UT, and related ionospheric disturbances between 11:30 and
20:00 UT. We understand that these events were generated by the Tonga
volcanic eruption that occurred at (20.55\selectlanguage{ngerman}°S, 175.39°W) in South Pacific
Ocean at 04:15 UT. Several Traveling Ionospheric Disturbances (TIDs)
were observed before and after the Lamb wave passed over the continent
and the arrival of the tsunami on the Chile coast. This is the first
time to report the signature of ionospheric disturbances over the South
American continent generated by both the Lamb wave and the tsunami that
were produced by the huge volcanic eruption.%
\end{abstract}\selectlanguage{ngerman}%



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\textbf{Hosted file}

\verb`essoar.10511884.1.docx`  available at \url{https://authorea.com/users/540949/articles/605333-signature-of-tonga-volcanic-eruption-in-the-ionosphere-over-south-america}

\textbf{Hosted file}

\verb`agu_suppinfo_takahashi.docx`  available at \url{https://authorea.com/users/540949/articles/605333-signature-of-tonga-volcanic-eruption-in-the-ionosphere-over-south-america}

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