Premium
Simulation of geomagnetic storms during the passage of magnetic clouds
Author(s) -
Chen James,
Slinker Steven,
Fedder Joel A.,
Lyon John G.
Publication year - 1995
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/95gl01520
Subject(s) - magnetic cloud , magnetohydrodynamics , solar wind , geomagnetic storm , physics , geophysics , polar , magnetosphere , magnetohydrodynamic drive , earth's magnetic field , ionosphere , interplanetary magnetic field , atmospheric sciences , magnetic field , computational physics , astronomy , quantum mechanics
The response of the Earth's magnetosphere to the passage of interplanetary magnetic clouds is simulated using a three‐dimensional magnetohydrodynamic (MHD) model. The input solar wind condition is given by the magnetic field, particle density, and plasma flow calculated from a model magnetic cloud. The cross‐polar potential (Φ p ), Joule heating and electron energy precipitation into the polar cap are calculated. Synthetic magnetic indices D st * and AE * are defined to serve as surrogates for the usual D st and AE indices, respectively. We demonstrate that Φ p ² provides a good predictor of the energy deposition into the ionosphere during storm conditions and that D st * and AE * behave qualitatively similarly to D st and AE .