Physics
Scientific paper
May 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agusmsm41c..11s&link_type=abstract
American Geophysical Union, Spring Meeting 2002, abstract #SM41C-11
Physics
2712 Electric Fields (2411)
Scientific paper
Most models for calculating the electric fields in the ionosphere are based on the assumption that the electric field is a potential field. This assumption usually works well and gives good agreement between the calculated and observed ionospheric electric fields. This assumption excludes the possibility of inductive electric fields, which are due to time varying magnetic fields. It is well known that geomagnetic field variations can induce quasi-steady-state electric currents through electric power lines, and therefore it is necessary to include inductive electric fields in simulations of the ionosphere to adequately predict when power line currents may be enhanced. We consider the model for numerically simulating the ionospheric currents without assuming a potential electric field. Within this model (which in its simplest form operates with a simple boundary condition coupling the tangential components of the induction magnetic filed and velocities) we consider a problem of the varying solar wind interaction with the Earth magnetosphere and find the time-varying magnetic field.
Gombosi Tamas
Ridley A. A.
Sokolov Igor V.
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