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|Title:||A Non-linear Theory of Gravitation-induced Rayleigh-Taylor Instability Mechanism & the Equatorial Spread-F|
|Authors:||Jain, R K|
|Abstract:||The non-linear evolution of the collisional gravitation-induced Rayleigh-Taylor (R-T) instability in the equatorial F-region has been studied taking into account the finite Larmor radius effects and the completed ion inertial term in ion equation of motion. A special class of coherent weakly non-linear modes as solutions to the wave equation describing R-T instability driven modes, is obtained. It is shown that the R-T modes in the equatorial F-region can evolve into coherent non-linear almost sinusoidal stationary wave structures. These structures are found to travel with a constant phase velocity and to have distorted sinusoidal shapes. The present results show a reasonably good agreement with many of the recent rocket and satellite observations of the equatorial spread-F irregularities.|
|ISSN:||0975-105X (Online); 0367-8393 (Print)|
|Appears in Collections:||IJRSP Vol.06(3) [September 1977]|
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