Numerical modeling of hydromagnetic wave coupling in the magnetosphere

Journal Article · Fri May 01 04:00:00 EDT 1987 · Journal of Geophysical Research; (United States)

DOI:https://doi.org/10.1029/JA092iA05p04751· OSTI ID:5557254

Inhester, B ^[1]

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1. Max-Planck-Inst. fuer Aeronomie, Katlenburg-Lindau (West Germany)

The author has developed a simple computer code that simulates the electromagnetic response of a simplified magnetosphere with respect to pressure variations at the magnetopause. The dependence of the magnetospheric response on the azimuthal wave number of the magnetopause perturbation and possible effects of a kinetic correction to the Alfven wave dispersion are investigated. He finds that the coupling of the cavity mode to Alfven oscillations is most efficient for wave numbers m = 1{center dot}{center dot}{center dot}3. With increasing wave number, the fundamental cavity mode may lower its eigenfrequency, opposed to the behavior of the higher-order modes. Kinetic effects cause a propagation of Alfven wave energy away from the resonant field line.

• OSTI ID: 5557254
• Journal Information: Journal of Geophysical Research; (United States), Journal Name: Journal of Geophysical Research; (United States) Vol. 92:A5; ISSN 0148-0227; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

661320* -- Auroral
Ionospheric
& Magnetospheric Phenomena-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALFVEN WAVES
COMPUTERIZED SIMULATION
CORRECTIONS
DIFFERENTIAL EQUATIONS
EARTH ATMOSPHERE
EARTH MAGNETOSPHERE
ENERGY
EQUATIONS
HYDROMAGNETIC WAVES
INTERACTIONS
KINETIC ENERGY
MAGNETOPAUSE
MATHEMATICAL MODELS
PARTIAL DIFFERENTIAL EQUATIONS
PLASMA PRESSURE
SIMULATION
WAVE EQUATIONS
WAVE PROPAGATION