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Conference Paper

Development of 3D ionospheric Tomography and its Application to Ionospheric Disturbances Related to Typhoon and the 2011 Tohoku-Oki Earthquake

Authors

Hattori,  Katsumi
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Rui,  Song
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Yoshino,  Chie
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Zhang,  Xuemin
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Liu,  Jann-Yenq
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

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Citation

Hattori, K., Rui, S., Yoshino, C., Zhang, X., Liu, J.-Y. (2023): Development of 3D ionospheric Tomography and its Application to Ionospheric Disturbances Related to Typhoon and the 2011 Tohoku-Oki Earthquake, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-3736


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020807
Abstract
Conventionally, two-dimensional spatio-temporal variations and one-dimensional temporal variations such as GNSS-based TEC fluctuations and ionosonde data have been used for ionospheric disturbances. Ionospheric disturbances such as Pre-earthquake phenomena, and triggered by seismic ground motions, tsunamis, and typhoons, for which the physical mechanisms have not yet been elucidated, were also studied using GNSS-based TEC and Ionosonde data. In this study, we introduce the newly developed an ionospheric tomography system that is stable even during disturbances and can reconstruct the three-dimensional ionospheric electron density distribution. And we apply the developed tomography method to the GEONET data with typhoon signature and earthquake-related disturbances around Japan. Based on the obtained the three-dimensional structure, it is highly suggestive that ionospheric disturbances caused by typhoons were excited by atmospheric gravity waves, seismic fluctuations by sound waves, tsunami-induced fluctuations by atmospheric gravity waves, and earthquake precursors by electric fields. Details will be shown in the presentation.