Comparison of ULF and VLF measurements of magnetospheric cold plasma densities

Journal Article · Tue Nov 01 04:00:00 EST 1977 · J. Geophys. Res.; (United States)

DOI:https://doi.org/10.1029/JA082i032p05063· OSTI ID:5280945

Webb, D C; Lanzerotti, L J; Park, C G

Equatorial cold plasma density profiles determined from VLF whistlers propagating in magnetospheric ducts are compared with densities computed from the observations of ULF hydromagnetic waves (geomagnetic pulsations). The densities obtained by the ULF technique are based on the identification of resonant geomagnetic field lines, assumed to be driven by a monochromatic source. The ULF results thus obtained agree well with the whistler results throughout the period, June 17--20, 1973, when simultaneous data comparisons could be made. The ULF observations show that at mid-latitudes, shorter-period resonances can be supported in the plasma trough region, while those of longer period can occur inside the plasmasphere.

• Research Organization: Bell Laboratories, Murray Hill, New Jersey 07974
• OSTI ID: 5280945
• Journal Information: J. Geophys. Res.; (United States), Journal Name: J. Geophys. Res.; (United States) Vol. 82:32; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

640203* -- Atmospheric Physics-- Magnetospheric Phenomena-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COLD PLASMA
EARTH ATMOSPHERE
ELECTROMAGNETIC RADIATION
EQUATOR
HYDROMAGNETIC WAVES
MAGNETOSPHERE
NOISE
PLASMA
PLASMA DENSITY
PLASMASPHERE
RADIATIONS
RADIO NOISE
RADIOWAVE RADIATION
WHISTLERS