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Geos 2 plasma drift velocity measurements associated with a storm time Pc5 pulsation
Author(s) -
Walker A. D. M.,
Junginger H.,
Bauer O. H.
Publication year - 1983
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/gl010i008p00757
Subject(s) - oscillation (cell signaling) , transverse plane , upper hybrid oscillation , physics , electric field , transverse wave , phase velocity , geophysics , plasma oscillation , computational physics , longitudinal wave , magnetic field , plasma , wave propagation , optics , genetics , structural engineering , quantum mechanics , engineering , biology
The Geos 2 electron gun experiment has been used to obtain electric field data during the compressional Pc5 pulsation event of Day 300, 1979. The phase relationships between the electric field and magnetic field observations show that the oscillation in the meridian plane appears to be a transverse Alfvén standing wave in the second harmonic, while the compressional oscillation is symmetrical about the equatorial plane. Computations of the fields of a guided poloidal wave fit the transverse oscillation well. The oscillation is not completeley explained by existing theories. A comprehensive model of the oscillation is presented.