SM025
Ring Current Dynamics and Its Coupling with Other Particle Populations
Ring Current Dynamics and Its Coupling with Other Particle Populations
Session ID#: 156827
Session Description:
The terrestrial ring current is comprised of ions and electrons from 1 keV to several hundred keV and plays an important role in regulating the energy density and field configuration of the magnetosphere. Abrupt changes in this population are responsible for global decreases in the Earth's surface magnetic field, known as geomagnetic storms. The storm-time ring current is thus linked to harmful space weather effects, which have motivated the study of its formation, dynamics, decay, and coupling with other particle populations. The instability of ring current plasma provides free energy for various waves (e.g., EMIC, magnetosonic, and whistler-mode waves), which can heat or pitch-angle-scatter various other plasma populations through wave-particle interactions and result in plasma energization or loss via precipitation. The subsequent precipitation modifies the ionospheric conductance, which in turn changes the magnetospheric electric potential pattern. Understanding the coupling processes between the ring current and other particle populations is crucial to modeling the inner magnetosphere. We invite presentations on research progress of the ring current dynamics, wave-particle interactions, and the coupling between ring current system and particle populations in other regimes (e.g., plasmasphere, radiation belts, ionosphere and neutral atmosphere). Contributions including theoretical studies, numerical modeling, observations from satellite and ground-based missions are welcome.
Index Terms:
2730 Magnetosphere: inner [MAGNETOSPHERIC PHYSICS]
2736 Magnetosphere/ionosphere interactions [MAGNETOSPHERIC PHYSICS]
2772 Plasma waves and instabilities [MAGNETOSPHERIC PHYSICS]
2778 Ring current [MAGNETOSPHERIC PHYSICS]
Primary Convener: Chao Yue, Peking University, Beijing, China
Conveners: Cristian Ferradas1, Qianli Ma2,3 and Jacob Bortnik3, (1)NASA Goddard Space Flight Center, Geospace Physics Laboratory, Greenbelt, MD, United States(2)Boston University, Boston, MA, United States(3)University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, United States
See more of: SPA-Magnetospheric Physics
