La turbulence magnétique observée à l'interface vent solaire/magnétosphère
Résumé
The magnetopause is the interface between the solar wind and the magnetosphere. Therefore, it has a fundamental rôle in exchanges between the terrestrial environment and the interplanetary medium. As this medium is collisionless, the magnetic turbulence which is observed on this boundary is likely to be responsible for the transfers that take place through it. This can be carried out either through "anomalous" diffusion, or by triggering reconnection. This paper describes the currently known experimental properties of this turbulence, and a model to explain why it is localized on the boundary. It is shown that multi-point measurements are necessary to really understand the dynamics of this region.