Annales Geophysicae
Annales Geophysicae
ANGEO
Articles | Volume 34, issue 2
Articles | Volume 34, issue 2
https://doi.org/10.5194/angeo-34-271-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/angeo-34-271-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 34, issue 2
Regular paper
 | 
18 Feb 2016
Regular paper |  | 18 Feb 2016

Interpretation of deformed ionograms induced by vertical ground motion of seismic Rayleigh waves and infrasound in the thermosphere

Takashi Maruyama, Kamil Yusupov, and Adel Akchurin

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Short summary
A significant anomaly was observed in the ionogram at Kazan, Russia, following the 2010 M8.8 Chile earthquake, which was caused by vertical ground motions of Rayleigh waves and the resulting acoustic waves propagating upward. The anomaly was characterized by steep satellite traces for which the range increased rapidly with frequency. The inclined ionospheric density perturbation caused oblique returns of sounding radio waves in addition to the nearly vertical returns of the main trace.
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