Pc 3 pulsation eigenperiod determination at low latitudes

Journal Article · Sun Nov 01 00:00:00 EST 1987 · Journal of Geophysical Research; (United States)

DOI:https://doi.org/10.1029/JA092iA11p12433· OSTI ID:5961997

Hattingh, S K.F.; Sutcliffe, P R ^[1]

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1. Council for Scientific and Industrial Research, Hermanus (South Africa)

A realistic method of calculating the eigenperiod of Pc 3 pulsations at low latitudes is discussed. Solution of the problem requires a magnetic field model and a model for the plasma distribution along the resonating field line. The calculated eigenperiods obtained using the dipole field model and the IGRF model are found to be similar. The inclusion of the F region O{sup +} in the plasma distribution noticeably affects the calculated eigenperiod at low latitudes. This effect decreases with increasing L value. Pulsation periods obtained from recordings made at four stations lying on a geomagnetic meridian demonstrate the importance of including O{sup +} in the plasma model if realistic periods are to be calculated at low latitudes.

• OSTI ID: 5961997
• Journal Information: Journal of Geophysical Research; (United States), Vol. 92:A11; ISSN 0148-0227
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
EARTH MAGNETOSPHERE
ALFVEN WAVES
CALCULATION METHODS
EIGENVALUES
F REGION
GEOMAGNETIC FIELD
MATHEMATICAL MODELS
OXYGEN IONS
RESONANCE
STANDING WAVES
CHARGED PARTICLES
EARTH ATMOSPHERE
HYDROMAGNETIC WAVES
IONOSPHERE
IONS
MAGNETIC FIELDS
PLANETARY IONOSPHERES
661320* - Auroral
Ionospheric
& Magnetospheric Phenomena- (1992-)