Modeling of ion dynamics in the inner geospace during enhanced magnetospheric activity
We investigate the effect of magnetic disturbances on the ring current buildup and the dynamics of the current systems in the inner geospace by means of numerical simulations of ion orbits during enhanced magnetospheric activity. For this purpose, we developed a particle-tracing model that solves...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2016-02-01
|
| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/34/171/2016/angeo-34-171-2016.pdf |
| Summary: | We investigate the effect of magnetic disturbances on the ring current
buildup and the dynamics of the current systems in the inner geospace by
means of numerical simulations of ion orbits during enhanced magnetospheric
activity. For this purpose, we developed a particle-tracing model that solves
for the ion motion in a dynamic geomagnetic field and an electric field due
to convection, corotation and Faraday induction and which mimics
reconfigurations typical to such events. The kinematic data of the
test particles is used for analyzing the dependence of the system on the
initial conditions, as well as for mapping the different ion species to the
magnetospheric currents. Furthermore, an estimation of Dst is given in terms
of the ensemble-averaged ring and tail currents. The presented model may
serve as a tool in a Sun-to-Earth modeling chain of major solar eruptions,
providing an estimation of the inner geospace response. |
|---|---|
| ISSN: | 0992-7689 1432-0576 |