Ring Current
Modeling during Geomagnetic Storms
Magnetospheric convection electric field variability during the Jan 1997 magnetic storm
Magnetic
storms are characterized by a pronounced intensification of the global magnetospheric electric field, driven by disturbed solar
wind conditions. The electric field
causes an intensification of the energy density of ring current ions in the
inner magnetosphere. Following the storm these ions are removed by charge
exchange and wave-particle scattering processes. In collaboration with V. Jordanova (LANL) we are attempting to understand the
processes responsible for ring current formation and decay during storms.
Recent Publications:
Thorne, R. M., R. B. Horne, V. K. Jordanova, J. Bortnik, S. A. Glauert, Interaction of EMIC waves with thermal plasma and
radiation belt particles, in Magnetospheric ULF
Waves; Synthesis and New Directions, Geophys. Monogr. Ser., vol. 169, edited by K. Takahashi, P. J. Chi, R.
E. Denton, and R. L. Lysak, pp 213-223, AGU,
Washington, D. C., 2006.
Jordanova,
V. K., A. Boonsiriseth, R. M. Thorne, and Y. Dotan, Ring Current Asymmetry From Global Simulations Using
AMIE Potentials, J. Geophys.
Res., 108, 1443, doi:10.1029/2003JA009993, 2003.
Jordanova,
V. K., R. M. Thorne, C. J. Farrugia, Y. Dotan, J. F. Fennell, M. F. Thomsen, G. D. Reeves, and D.
J. McComas, Ring current dynamics during the July
13-18, 2000 storm period, Solar Phys.,
204, 361-375, 2001.
Boonsiriseth,
A., R. M. Thorne, G. Lu, V. K. Jordanova, M. F.Thomsen, D. M. Ober, and A. J.
Ridley, A semi-empirical equatorial
mapping of AMIE convection electric potentials (MACEP) for the January 10, 1997
magnetic storm, J. Geophys., Res., 106, 12903-12917, 2001.
Jordanova,
V. K., C. J. Farrugia, R. M. Thorne, G. V. Khazanov, G. D. Reeves, and M. F. Thomsen, Modeling ring
current protons precipitation by EMIC waves during the May 14-16, 1997 storm. J. Geophys. Res., 106, 7-22,
2001.
Daglis,
I. A., R. M. Thorne, W. Baumjohan, and S. Orsini, The terrestrial ring current: Origin, formation and
decay, Revs. Geophys., 37, 407-438, 1999.
Thorne, R. M., and R. B. Horne, "Modulation of electromagnetic ion cyclotron instability due to interaction with ring current O+ during geomagnetic storms," J. Geophys. Res., 102, 14155-14163, 1997.