Open AccessSelf‐consistent model of magnetospheric electric field, ring current, plasmasphere, and electromagnetic ion cyclotron waves: Initial results
Author(s) -
Gamayunov K. V.,
Khazanov G. V.,
Liemohn M. W.,
Fok M.C.,
Ridley A. J.
Publication year - 2009
Publication title -
journal of geophysical research: space physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.67
H-Index - 298
eISSN - 2156-2202
pISSN - 0148-0227
DOI - 10.1029/2008ja013597
Subject(s) - plasmasphere , physics , magnetosphere , ionosphere , ring current , geophysics , computational physics , electric field , cyclotron , plasma , quantum mechanics
Further development of our self‐consistent model of interacting ring current (RC) ions and electromagnetic ion cyclotron (EMIC) waves is presented. This model incorporates large‐scale magnetosphere‐ionosphere coupling and treats self‐consistently not only EMIC waves and RC ions, but also the magnetospheric electric field, RC, and plasmasphere. Initial simulations indicate that the region beyond geostationary orbit should be included in the simulation of the magnetosphere‐ionosphere coupling. Additionally, a self‐consistent description, based on first principles, of the ionospheric conductance is required. These initial simulations further show that in order to model the EMIC wave distribution and wave spectral properties accurately, the plasmasphere should also be simulated self‐consistently, since its fine structure requires as much care as that of the RC. Finally, an effect of the finite time needed to reestablish a new potential pattern throughout the ionosphere and to communicate between the ionosphere and the equatorial magnetosphere cannot be ignored.