Physics
Scientific paper
May 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006jgra..11105303l&link_type=abstract
Journal of Geophysical Research, Volume 111, Issue A5, CiteID A05303
Physics
24
Ionosphere: Ionospheric Disturbances, Oceanography: Physical: Tsunamis And Storm Surges, Seismology: Earthquake Source Observations (1240), Radio Science: Ionospheric Physics (1240, 2400), Radio Science: Ionospheric Propagation (0689, 2487, 3285, 4275, 4455)
Scientific paper
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.
Chen Yuh-Ing
Kamogawa Masashi
Lee Chien-Ping
Lin Chien-Hung
Liu Jann-Yenq
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