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  • February 27, 2024

[Frontier Letter] Simulation study of atmosphere–ionosphere variations driven by the eruption of Hunga Tonga-Hunga Ha’apai on 15 January 2022

The volcanic eruption of Hunga Tonga-Hunga Ha'apai on 15 January 2022 … Read more

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  • November 28, 2023

[Frontier Letter] New aspects of the upper atmospheric disturbances caused by the explosive eruption of the 2022 Hunga Tonga–Hunga Ha’apai volcano

An explosive eruption of the Hunga Tonga–Hunga Ha’apai (Tonga) volcano… Read more

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[Frontier Letter] Monitoring of equatorial plasma bubbles using aeronautical navigation system: a feasibility study

Equatorial Plasma Bubbles (EPBs) are regions of depleted plasma in the… Read more

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[Frontier Letter] A review of shallow slow earthquakes along the Nankai Trough

In the Nankai subduction zone, the shallow (≤ 10 km) slow earthquakes … Read more

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  • May 8, 2023

[Frontier Letter] New GEONET analysis strategy at GSI: daily coordinates of over 1300 GNSS CORS in Japan throughout the last quarter century

Takamatsu et al. (2023) reprocesses the daily station coordinates of J… Read more

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[Frontier Letter] Variations of the surface characteristics of Ryugu returned samples

The Planetary Material Sample Curation Facility3 of JAXA is responsibl… Read more