11:45 〜 12:00 [MIS04-10] The 3-D ionospheric Ne disturbances prior to Tohoku-Oki Earthquake occurred on March 11, 2011 ★Invited Papers *Song Rui1、服部 克巳1、张 学民2、劉 正彦3 (1.千葉大学理学部、2.Institute of Earthquake Forecasting, China Earthquake Administration, China、3.Institute of Space Science, National Central University, Taiwan)