Pc 3 pulsation eigenperiod determination at low latitudes

Details Pc 3 pulsation eigenperiod determination at low latitudes Pc 3 pulsation eigenperiod determination at low latitudes

Nov 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....9212433h&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 92, Nov. 1, 1987, p. 12433-12436.

Physics

30

Geomagnetic Micropulsations, Temporal Distribution, F Region, Latitude, Magnetic Fields, Space Plasmas

Scientific paper

A realistic method of calculating the eigenperiod of Pc3 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(+) 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(+) in the plasma model if realistic periods are to be calculated at low latitudes.

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