Possible Earthquake Effect on Electron Temperature in the Afternoon Overshoot at 600km: Contribution of Space Plasma Chamber to the Accurate Measurement of Te
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Space Plasma Symposium 2006 (December 19-2, 2006. Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA)), Sagamihara, Kanagawa Japan
抄録（英）
We are studying the effect of the 3 big earthquakes on the ionosphere by using electron temperature (Te) and electron density (Ne) data which were obtained by HINOTORI satellite. The three big earthquakes occurred in November, 1981, and in January 1982 in Philippine. Te of the afternoon overshoots which appears around 15-17 local times in the low-mid latitude totally disappears or strongly depressed about 5 days prior to the earthquake. This is explained by the excess deposit of photoelectron energy caused by the enhanced Ne which occurs below 600km. The enhanced Ne is possibly generated by westward electric field associated with earthquake. This study is only possible by using contamination free instrument, such as a resonance rectification probe, which was invented and improved in Japan by using Space Plasma Chamber.
Possible Earthquake Effect on Electron Temperature in the Afternoon Overshoot at 600km: Contribution of Space Plasma Chamber to the Accurate Measurement of Te
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