[PEM09-P02] Enhanced dynamo electric field as a possible cause of ionosphere disturbance before Large Earthquake
Keywords:Earthquake, Electric field, Ionosphere, Disturbance
Next question on the electric field generation is the mechanism which modifies the dynamo field. We speculate that modification of E field is a result of modification of neutral wind system, which is originally caused by internal gravity waves which propagate from below. Then again next question is on the origin of the internal gravity waves. The waves might be originally caused by the ground motion, and these waves which propagate upward might interact with planetary wave, and amplified. We show several side evidence of ground motions before earthquakes.