Nonstationary coupling between the magnetosphere and ionosphere

Details Nonstationary coupling between the magnetosphere and ionosphere Nonstationary coupling between the magnetosphere and ionosphere

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983esasp.183..221g&link_type=abstract

In ESA Sixth ESA Symp. on European Rocket and Balloon Programs and Related Res. p 221-228 (SEE N83-33397 21-46)

Physics

1

Cross Coupling, Earth Ionosphere, Earth Magnetosphere, Electrokinetics, Magnetohydrodynamic Waves, Magnetosphere-Ionosphere Coupling, Electric Fields, Electron Energy, Field Aligned Currents, Magnetic Resonance, Magnetic Storms, Standing Waves

Scientific paper

Resonant coupling of large scale MHD waves to small scale kinetic Alfven waves is described. The small-scale waves drive field-aligned currents tens of micro A/sqm into the ionosphere with accelerated electrons of energies a few keV. Bounce resonant interaction with standing kinetic Alfven waves may precipitate higher energy electrons. East-west aligned arcs should be thinnest and move polewards relative to the plasma at the poleward edge. Downward travelling wave packets trap electrons between the wave front and the ionosphere whose energy is below the peak energy and whose phase-space density should be independent of the peak energy.

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