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Animation illustrating Dymanical Interconnection between Geomagnetic and Interplanetary Magnetic Field lines (IMF)
Lemaire (1982)
Belgian Institute for Space Aeronomy, Brussels
Centre for Space Radiations, Université cath. Louvain, LLN

This movie is a digitalized version of a VHS video produced at the Belgian Institute for Space Aeronomy (BISA), Brussels in 1982. It illustrates how dipole magnetic field lines (the geomagnetic field) may be assumed to interconnect with those of the Interplanetary Magnetic Field (IMF).
The B-field changes produced by shocked supersonic solar wind plasma irregularities in the magnetosheath are ignored, as in Dungey's [1961] idealized magnetosphere model.
The total magnetic field is the superposition of two B-field distributions, as in classical magnetostatic theory in a medium whose magnetic permeability is equal to that of free space (μ = μ0). The magnetic permeability of space plasmas is almost equal to that of vacuum.

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Related references:
Lemaire J. [1977], Impulsive penetration of filamentary plasma elements into the magnetospheres of Earth and Jupiter, Planet. Space Sci., 25, 201.
Lemaire J., Roth, M. [1978], Penetration of solar wind plasma elements into the magnetosphere. J. Atmos. Terr. Phys., 40, 331-335.
Lemaire J. [1985], Plasmoid motion across a tangential discontinuity, (with application to the Magnetopause), J. Plasma Physics, 33, part 3, 425.
Echim M. E., Lemaire, J. [2000], Laboratory and numerical simulations of the impulsive penetration mechanism. Space Science Review, 92, 565-601.

Lemaire's simulations can be accessed by clicking on ftp link
for the English version;
for the French version.

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