Characterization of low frequency oscillations at substorm breakup
- Universite Versailles Saint-Quentin, Velizy (France)
- Universite Versailles Saint-Quentin, Velizy (France); and others
The authors study, by means of satellite observations, low frequency oscillations in electric and magnetic field signatures of the breakup phase of a magnetic storm occuring on January 25, 1979. They characterize three major types of low frequency variations. First there is a long period oscillation (300 sec) which they argue is related to apparent oscillation of the entire field lines. They are seen most prominently following the most active phase of the breakup. Second there are a shorter period oscillation (45 - 65 sec), which the authors argue originate from waves trapped in current layers during the storm, which are released during the breakup phase of the storm. Thirdly there are impulsive increases in fields, and ion flux, which occur over one rotation period of the satellites, and which they argue signal the propagation of the substorm breakup down the tail.
- OSTI ID:
- 227117
- Journal Information:
- Journal of Geophysical Research, Vol. 100, Issue A10; Other Information: PBD: 1 Oct 1995
- Country of Publication:
- United States
- Language:
- English
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