The Farley instability and the polar cap E field
Journal Article
·
· J. Geophys. Res., v. 80, no. 25, pp. 3698-3700
OSTI ID:4161270
The theoretical distributions over the polar cap of the growth rates of the gradient and the Farley-Buneman two-stream instabilities are compared to the measured distribution of the 'slant E condition' (SEC) on polar cap ionograms. The Farley instability seems to be the most likely source of the SEC, and this opens the possiblity of detecting by means of ground-based ionospheric Doppler radars whether the polar cap E field is above or below a critical field and, if above, of determining the direction of the E field and the magnitude of the critical field.
- Research Organization:
- Division of Geophysics, Danish Meteorological Institute, Copenhagen, Denmark
- NSA Number:
- NSA-33-003899
- OSTI ID:
- 4161270
- Journal Information:
- J. Geophys. Res., v. 80, no. 25, pp. 3698-3700, Journal Name: J. Geophys. Res., v. 80, no. 25, pp. 3698-3700; ISSN JGREA
- Country of Publication:
- United States
- Language:
- English
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