Events linked to the lithosphere-atmosphere-ionosphere coupling observed by DEMETER

摘要

It has been statistically shown that earthquakes induce perturbations in the ionosphere before their occurrence. Models taking into account the global electric circuit between the ground and the bottom of the ionosphere can explain these perturbations. To validate these models, the aim of this paper is to show in the ionosphere the signature of various events occurring at the Earth's surface or in the atmosphere. This includes the old natural nuclear reactor located at Oklo (Gabon), sandstorms in the Sahara, volcanic activity, thunderstorm activity, and hurricanes.