SC- and SI-associated ULF and HF-Doppler oscillations during the great magnetic storm of February 1986
Abstract
Results are presented of an investigation of SC- and SI-associated ULF and HF-Doppler pulsations observed during the great geomagnetic storm of February 1986, which began with a sudden commmencement on February 6 at about 13:12 UT, developed slowly over the next two days, and, after a rapid intensification late on February 8, reached a minimum. It is shown that these ULF and geomagnetic pulsations can be explained by the dynamo-motor mechanism of ionospheric electric fields and by global compressional oscillations in the magnetosphere and ionosphere, respectively.
- Publication:
-
Journal of Geomagnetism and Geoelectricity
- Pub Date:
- 1989
- DOI:
- 10.5636/jgg.41.871
- Bibcode:
- 1989JGG....41..871Y
- Keywords:
-
- Doppler Effect;
- Geomagnetic Pulsations;
- Magnetic Storms;
- Solar Terrestrial Interactions;
- Dynamo Theory;
- Extremely Low Radio Frequencies;
- High Frequencies;
- Ionospheric Disturbances;
- Magnetic Compression;
- Magnetospheric Instability