Ionospheric GPS total electron content (TEC) disturbances triggered by the 26 December 2004 Indian Ocean tsunami
Jann-Yenq Liu,Yi-Ben Tsai,Kuo Fong Ma,Yuh Ing Chen,Ho Fang Tsai,Chien Hung Lin,Masashi Kamogawa,C. Lee +7 more
TLDR
In this article, the total electron content (TEC) of ground-based receivers of the global positioning system (GPS) in the Indian Ocean area of the 26 December 2004 Mw 9.3 Sumatra earthquake was analyzed.Abstract:
[1] Tsunami ionospheric disturbances (TIDs) of the 26 December 2004 Mw 9.3 Sumatra earthquake are detected by the total electron content (TEC) of ground-based receivers of the global positioning system (GPS) in the Indian Ocean area. It is found that the tsunami waves triggered atmospheric disturbances near the sea surface, which then traveled upward with an average velocity of about 730 m/s (2700 km/hr) into the ionosphere and significantly disturbed the electron density within it. Results further show that the TIDs, which have maximum height of about 8.6–17.2 km, periods of 10–20 min, and horizontal wavelengths of 120–240 km, travel away from the epicenter with an average horizontal speed of about 700 km/hr (190 m/s) in the ionosphere.read more
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Ionospheric disturbances triggered by the 11 March 2011 M9.0 Tohoku earthquake
Jann-Yenq Liu,Jann-Yenq Liu,Chia-Hung Chen,Chien Hung Lin,Ho Fang Tsai,Chieh-Hung Chen,Masashi Kamogawa +6 more
TL;DR: In this article, the total electron content (TEC) derived from nationwide GPS receiving networks in Japan and Taiwan is employed to monitor STIDs triggered by seismic and tsunami waves of the Tohoku earthquake.
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From Sumatra 2004 to Tohoku-Oki 2011: The systematic GPS detection of the ionospheric signature induced by tsunamigenic earthquakes
TL;DR: In this article, the authors highlight the early signature in the ionosphere produced by tsunamigenic earthquakes and observed by GPS, measuring the total electron content, close to the epicenter.
Journal ArticleDOI
Plate Boundary Observatory and related networks: GPS data analysis methods and geodetic products
Thomas A. Herring,Timothy I. Melbourne,Mark Murray,Michael Floyd,Walter Szeliga,Robert W. King,David A. Phillips,Christine M. Puskas,Marcelo Santillan,Lei Wang +9 more
TL;DR: In this article, the authors document the methodology for generating station positions and their evolution over time, and describe the requisite tradeoffs involved with combination of results, and explore the impact of analysis assumptions on the reference frame realization and on the final solutions.
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Three‐dimensional waveform modeling of ionospheric signature induced by the 2004 Sumatra tsunami
TL;DR: In this article, the authors reproduce, with a 3D numerical modeling of the ocean-atmosphere-ionosphere coupling, the tsunami signature in the Total Electron Content (TEC) data measured by the Jason-1 and Topex/Poseidon satellite altimeters.
References
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Seismology: speed and size of the Sumatra earthquake.
Seth Stein,Emile A. Okal +1 more
TL;DR: Now that the entire rupture zone has slipped, the strain accumulated from the subduction of the Indian plate beneath the Burma microplate has been released, and there is no immediate danger of a similar tsunami being generated on this part of the plate boundary, although large earthquakes on segments to the south still present a threat.
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GPS detection of ionospheric perturbations following the January 17, 1994, Northridge Earthquake
Eric Calais,J. Bernard Minster +1 more
TL;DR: In this article, the ionospheric electron content time series for several days preceding and following the January 17, 1994, M(sub w) = 6.7 Northridge earthquake was used to compute ionoispheric electron density.
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Acoustic‐gravity waves in the upper atmosphere
Kung C. Yeh,Chao H. Liu +1 more
TL;DR: In this article, the authors review the theory of acoustic-gravity waves, the interaction of such waves with the ionosphere, the experimental support for the existence of acoustic gravity waves in the upper atmosphere, and the role played by acoustic gravity wave in thermospheric dynamics.
Journal ArticleDOI
Ionospheric detection of gravity waves induced by tsunamis
TL;DR: In this paper, the authors used the GEONET network in Japan to image small-scale perturbations of the Total Electron Content above Japan and up to 400 km off shore.