The temporal variation of the frequency of high latitude field line resonances
Journal Article
·
· Journal of Geophysical Research
- Univ. of Alberta, Edmonton (Canada)
The authors report observations of ULF continuum field line resonance spectra using the Canadian Auroral Network for the OPEN Program Unified Study (CANOPUS) array. They use cross spectral procedures to analyze the data from magnetometer arrays. Observations are typically seen to start near dawn at frequencies near 2 mHz, to increase over several hours to 5 - 10 mHz, and then to slowly decrease back to 2 mHz over the remainder of the day. The waves are thought to be part of a resonant Alfven continuum. Using magnetic field models and a cold plasma magnetohydrodynamics model, the authors infer plasma densities from the resonant frequencies.
- OSTI ID:
- 207237
- Journal Information:
- Journal of Geophysical Research, Journal Name: Journal of Geophysical Research Journal Issue: A5 Vol. 100; ISSN JGREA2; ISSN 0148-0227
- Country of Publication:
- United States
- Language:
- English
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