Ono Y, Ida Y, Kasahara Y, Hobara Y, Hayakawa M, Rozhnoi A, Solovieva M, Molchanov OA, Ohta K. Ionospheric perturbations associated with two huge earthquakes in Japan, using principal component analysis for multiple subionospheric VLF/LF propagation paths. Ann. Geophys. [Internet]. 2012Apr.24 [cited 2024Apr.26];55(1). Available from: https://www.annalsofgeophysics.eu/index.php/annals/article/view/5329