AUTHOR=Moro Juliano , Xu Jiyao , Bageston José Valentin , da Silva Lígia Alves , Resende Laysa Cristina Araújo , De Nardin Clezio Marcos , Andrioli Vânia Fátima , Santos Angela Machado , Picanço Giorgio Arlan da Silva , Li Hui , Zhengkuan Liu , Wang Chi , Schuch Nelson Jorge TITLE=Study of height-spread sporadic-E layers observed in the South American Magnetic Anomaly JOURNAL=Frontiers in Astronomy and Space Sciences VOLUME=12 YEAR=2025 URL=https://www.frontiersin.org/journals/astronomy-and-space-sciences/articles/10.3389/fspas.2025.1535186 DOI=10.3389/fspas.2025.1535186 ISSN=2296-987X