Japan Geoscience Union Meeting 2014

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Oral

Symbol M (Multidisciplinary and Interdisciplinary) » M-IS Intersection

[M-IS29_29PM2] Electromagnetic phenomena associated with seismic and volcanic activities

Tue. Apr 29, 2014 4:15 PM - 6:00 PM 313 (3F)

Convener:*Tetsuya Kodama(Earth Observation Research Center, Space Applications Mission Directorate, Japan Space Exploration Agency), Jun Izutsu(College of Engineering, Chubu University), Yasuhide Hobara(Graduate School of Information and Engineering Department of Communication Engineering and Informatics, The University of Electro-Communications), Toshiyasu Nagao(Earthquake Prediction Research Center, Tokai University), Chair:Toshiyasu Nagao(Earthquake Prediction Research Center, Tokai University), Tetsuya Kodama(Earth Observation Research Center, Space Applications Mission Directorate, Japan Space Exploration Agency)

5:30 PM - 5:45 PM

[MIS29-13] Satelite orbit of detecting Ionospheric Earthquake Precursor

*Shoho TOGO1, Yushi SUTO1, Masashi KAMOGAWA1 (1.Dpt. of Phys., Tokyo Gakugei Univ.)

Keywords:Earthquake, Ionosphere, Satellite

In general, it is difficult to show a statistical correlation between the precursor and the large earthquake, because of infrequent occurrences of the large earthquake. In particular, to prove the causation required by the identification criteria 5 needs a number of much larger earthquakes, which are further less number according to Gutenberg- Richter relation. In addition, the events of earthquakes in the ocean and far from the ground observation site might be undetectable. Supposing that a number of precursors are detectable on the ground-based station, it might take the long term of thousand years. Theses plausible atmospheric-ionospheric precursors last for a few hours to a few days before the mainshock. Therefore, some of precursors are detectable by satellites because the orbit sampling of satellite is less than the duration of the precursors. Moreover, the satellite observation can cover the whole of a region of active seismicity, when the inclination of satellite is more than 60 degrees. In this presentation, we propose ideal orbits of dedicated satellite for this study.