Long period hydromagnetic wave inside the plasmasphere
A long period (approx.6 min) hydromagnetic wave was observed near Lapprox.4 in the southern hemisphere at both Halley Bay and Siple, Antarctica, to have a substantially larger amplitude than that observed in the northern hemisphere conjugate areas. At Halley Bay, as well as at Siple, the wave appeared quite monochromatic. Data from a station array conjugate to Siple in the northern hemisphere showed the wave to be localized near Lapprox.3.4. Whistler wave determinations of the equatorial electron densities show the wave to occur inside the plasmasphere. The wave period and localization region are no readily reconcilable with a cold, pure hydrogen plasma. The density of heavy ions that would be required within the plasmasphere to explain the observations appears excessive from present understanding of magnetosphere plasmas.
- Research Organization:
- Institute of Geological Sciences, Edinburgh, Scotland
- OSTI ID:
- 6769276
- Journal Information:
- J. Geophys. Res.; (United States), Journal Name: J. Geophys. Res.; (United States) Vol. 87:A3; ISSN JGREA
- Country of Publication:
- United States
- Language:
- English
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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
EARTH ATMOSPHERE
EARTH PLANET
ELECTRON DENSITY
GEOMAGNETIC CONJUGACY
GEOMAGNETIC FIELD
HYDROMAGNETIC WAVES
MAGNETIC FIELDS
MAGNETOSPHERE
NORTHERN HEMISPHERE
PLANETS
PLASMASPHERE
POLARIZATION
SOUTHERN HEMISPHERE