Upper hybrid and Langmuir turbulence in the auroral E region
Journal Article
·
· J. Geophys. Res.; (United States)
Oscillations at a frequency between the local upper hybrid and plasma frequencies have been detected in the upper E region of the morning auroral oval. The emission occurs in a narrow band of frequencies when the dipole antenna is nearly perpendicular to B but broadens when the antenna has a component parallel to B. The waves have a low-altitude cutoff at about 125--130 km, and their intensity increases in regions of low plasma density. No theoretical explanation yet exists for these waves, which may be the manifestation of a plasma instability process due to the suprathermal electron flux which accompanies collisional ionization in the auroral E region. copyright American Geophysical Union 1988
- Research Organization:
- School of Electrical Engineering, Cornell University, Ithaca, New York
- OSTI ID:
- 5229032
- Journal Information:
- J. Geophys. Res.; (United States), Journal Name: J. Geophys. Res.; (United States) Vol. 93:A3; ISSN JGREA
- Country of Publication:
- United States
- Language:
- English
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