PROPAGATION OF PC1 GEOMAGNETIC MICROPULSATIONS IN THE MAGNETOSPHERE AND THE IONOSPHERE.
NEWCASTLE UNIV (AUSTRALIA) DEPT OF PHYSICS
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The report details original equipment for continuously recording Pc1 geomagnetic micropulsations on magnetic tape with timing accuracy of less than 0.1 second. Analysis of the records is carried out by using both frequency-time and amplitude-time techniques. An extensive study of temporal variations in Pc1 in relation to propagation in the magnetosphere is detailed. Signals are generated in the lambda 4.5 - 9.5 region of the magnetosphere and show diurnal and geomagnetic disturbance variations. The theoretical problem of north-south propagation of Pc1 signals in an ionospheric duct is treated. Comparison with experimental results show that wave group velocities in the duct vary from 400 to 800 kmsec, depending on the electron concentration in the duct and hence local time. Author
- Atmospheric Physics
- Electromagnetic Pulses