Magnetic pulsations recorded in northern Scandinavia during the IMS; a study of Pc 4-5 events

Details Magnetic pulsations recorded in northern Scandinavia during the IMS; a study of Pc 4-5 events Magnetic pulsations recorded in northern Scandinavia during the IMS; a study of Pc 4-5 events

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.217..655w&link_type=abstract

In ESA Achievements of the Intern. Magnetospheric Study (IMS) p 655-661 (SEE N85-24544 14-46)

Physics

Geomagnetic Pulsations, International Magnetospheric Study, Kelvin-Helmholtz Instability, Magnetohydrodynamic Waves, Standing Waves, Ats 2, Cyclotron Resonance, Geos 2 Satellite, Magnetometers, Magnetospheric Instability, Resonant Frequencies

Scientific paper

Ground magnetometers in northern Scandinavia and the geostationary satellites GEOS-2 and ATS-6 supplied data for a study of Pc4 and Pc5 events. A morning Pc5 and a giant pulsation event (pg) are described. It is assumed that both events correspond to the fundamental mode of a resonant wave. The Pc5 is governed by a toroidal mode and gets its energy from a surface wave excited near the magnetopause. The pg shows at GEOS-2 the largest magnetic perturbation along the ambient field, and the most likely energy source is bounce-drift resonance with medium energy (5 keV) ions.

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