[M-IS29_29PM2] 地震・火山等の地殻活動に伴う地圏・大気圏・電離圏電磁現象

[MIS29-13] 地震先行電離圏異常現象を検証可能な衛星の軌道設計

*東郷 翔帆¹、須藤 雄志¹、鴨川 仁¹ (1.東京学芸大学教育学部物理学科)

キーワード：地震, 電離圏, 人工衛星

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.