Computer Science – Sound
Scientific paper
Dec 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.7043g&link_type=abstract
Journal of Geophysical Research, vol. 84, Dec. 1, 1979, p. 7043-7058. Research sponsored by the U.S. Department of Energy; Bund
Computer Science
Sound
33
International Sun Earth Explorer 1, International Sun Earth Explorer 2, Magnetopause, Magnetospheric Instability, Plasma Turbulence, Plasma Waves, Electric Fields, Magnetic Fields, Magnetohydrodynamic Stability, Plasma Spectra, Polarization (Waves), Satellite Sounding, Wavelengths
Scientific paper
An investigation of plasma wave electric and magnetic fields in the vicinity of the magnetopause using measurements from the ISEE 1 and 2 spacecraft is presented. Strong electric and magnetic field turbulence is often observed at the magnetopause; the electric field spectrum of this turbulence extends from less than a few hertz to over 100 kHz, and the magnetic field from a few hertz to about 1 kHz. Similar turbulence spectra are observed in association with flux transfer events and possible 'inclusions' of boundary layer plasma in the magnetosphere. Two possible plasma instabilities, the electrostatic ion-cyclotron and the lower-hybrid-drift instability, should explain the broad-band electric field turbulence; the narrow-band electrostatic emissions near the local electron plasma frequency are believed to be plasma oscillations or electrostatic waves near the upper-hybrid-resonance frequency.
Anderson Rachel
Bame J. Jr. S.
Gurnett Donald A.
Haerendel Gerhard
Paschmann Goetz
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