Convenor: Janos Lichtenberger (Hungary)
Co-Convenors: Anders Jorgensen (USA), Balázs Heilig (Hungary), Fred Menk (Australia)
The plasmasphere is a dynamic system governed by solar activity and coupled by electromagnetic fields, currents and particle fluxes to the underlying ionosphere and atmosphere. Populated by dense cold plasma but also straddled by the ring current and radiation belts, dynamics of the plasmasphere plays an important role in Earth’s space weather system. The cold background density is a key parameter in wave-particle interactions in the radiation belts, but information on this is not always known with sufficient spatial and temporal resolution to be able to estimate wave power. Recent advances in modelling the plasmasphere, including physics based, empirical and data assimilative approaches, improve our understanding of the dynamics of this region. These modelling efforts are based on ground-based as well as in-situ measurements. Opportunities for ground-based remote sensing have grown rapidly with the deployment of many instrument arrays, while in situ observations are facilitated through multi-satellite missions.
This symposium solicits presentations on:
- Ground-based remote-sensing techniques, including measurements using ULF-ELF-VLF electromagnetic waves,
- In-situ satellite-based measurements, particularly observations of the plasmasphere from the Van Allen Probes and Themis missions and other satellite radio sounding and imaging experiments,
- Advances in modelling of the plasmasphere and plasma trough and the dynamic behaviour of the plasmapause.