Physics
Scientific paper
Apr 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....89.2151m&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 89, April 1, 1984, p. 2151-2161.
Physics
54
Bow Waves, Collisionless Plasmas, International Sun Earth Explorer 1, International Sun Earth Explorer 2, Oblique Shock Waves, Electrostatic Waves, Energy Dissipation, Ion Acoustic Waves, Polarization (Waves), Power Spectra, Time Lag, Wavelengths, Whistlers
Scientific paper
ISEE 1 and 2 spacecraft magnetic field data are used to determine the scale lengths of various elements of shock structure, as well as wavelengths and wave polarizations, in a study of structural elements which include shock ramps and precursor wave trains over a series of oblique, low Mach number terrestrial bow shocks. Dissipative processes are reflected in the damping of the precursors, and dissipative scale lengths are of 200-800 km, or several times greater than shock thicknesses. The source of dissipation in the shocks does not appear to be the wave-wave decay of the whistlers, for which no evidence is found. The interaction of the whistler itself with upstream electrons is suggested as a simple and self-consistent explanation for the observed wave train damping.
Greenstadt Eugene W.
Mellott Mary M.
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