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Spread F bubbles - Nonlinear Rayleigh-Taylor mode in two dimensionsThe paper discusses long-wavelength developed bottomside spread F which has been attributed to the Rayleigh-Taylor instability. The nonlinear saturation amplitude and the k spectrum of the inertia-dominated Rayleigh-Taylor instability is found in two directions: east-west and vertical. As in the collisional case (Chaturvedi and Ossakow, 1977), the dominant nonlinearity is found to be two-dimensional. It is found that the linearly most unstable modes, which are primarily horizontal, saturate by the nonlinear generation of vertical spatial harmonics. The harmonics are damped by diffusion or recombination. The resulting amplitude spectrum indicates that bubbles are vertically elongated in both inertial and collisional regimes.
Document ID
19780061282
Document Type
Reprint (Version printed in journal)
Authors
Hudson, M. K. (California, University Berkeley, Calif., United States)
Date Acquired
August 9, 2013
Publication Date
July 1, 1978
Publication Information
Publication: Journal of Geophysical Research
Volume: 83
Subject Category
GEOPHYSICS
Funding Number(s)
CONTRACT_GRANT: NOAA-04-5-022-16
CONTRACT_GRANT: NSG-7401
Distribution Limits
Public
Copyright
Other