Generation of 3-m irregularities during equatorial spread F by low-frequency drift waves
Journal Article
·
· J. Geophys. Res.; (United States)
We consider the linear theory of low-frequency drift waves for parameters typical of the ionosphere during equatorial spread F. These waves are considered to be generated by density gradients associated with long-wavelength primary plasma fluid instabilities (e.g., collisional Rayleigh-Taylor). We include electron-ion, electron-neutral, and ion-ion collisions in our analysis. We find that a collisional drift wave can occur in the 3-meter regime but that it is heavily damped by ion viscosity. For density gradient scale lengths of > or approx. =75 m it is required that n<2 x 10/sup 3/ cm/sup -3/ for wave excitation to occur.
- Research Organization:
- Science Applications, Inc., McLean Virginia 22101
- OSTI ID:
- 5485348
- Journal Information:
- J. Geophys. Res.; (United States), Journal Name: J. Geophys. Res.; (United States) Vol. 84:A11; ISSN JGREA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640201* -- Atmospheric Physics-- Auroral
Ionospheric
& Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COLLISIONS
DISPERSION RELATIONS
DISTURBANCES
EARTH ATMOSPHERE
ELECTRON COLLISIONS
ELECTRON-ION COLLISIONS
F REGION
INSTABILITY
ION COLLISIONS
ION-ION COLLISIONS
ION-MOLECULE COLLISIONS
IONOSPHERE
IONOSPHERIC STORMS
MOLECULE COLLISIONS
PLANETARY IONOSPHERES
PLASMA DRIFT
PLASMA WAVES
RAYLEIGH-TAYLOR INSTABILITY
SPREAD F
TRAVELLING IONOSPHERIC DISTURBANCE
Ionospheric
& Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COLLISIONS
DISPERSION RELATIONS
DISTURBANCES
EARTH ATMOSPHERE
ELECTRON COLLISIONS
ELECTRON-ION COLLISIONS
F REGION
INSTABILITY
ION COLLISIONS
ION-ION COLLISIONS
ION-MOLECULE COLLISIONS
IONOSPHERE
IONOSPHERIC STORMS
MOLECULE COLLISIONS
PLANETARY IONOSPHERES
PLASMA DRIFT
PLASMA WAVES
RAYLEIGH-TAYLOR INSTABILITY
SPREAD F
TRAVELLING IONOSPHERIC DISTURBANCE