Propagation of Internal Gravity Waves in a Medium of Weak Random Vertical Shear PDF Download
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Author: Jeffrey M. Forbes
Publisher:
ISBN:
Category : Equations of motion
Languages : en
Pages : 32
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Book Description
The dispersion relation is derived for the ensemble-averaged wave in a Boussinesq fluid with a weak random vertical shear. The basic flow is assumed to be statistically homogeneous in space and time with zero mean. The phase velocity and decay rate are found for the two limiting cases where the wavelength is much greater and much smaller than the correlation length of the basic flow speeds. The decay rate is found to increase as the direction of propagation becomes more horizontal. However, the maximum decrease in phase velocity is found to occur when the wave is propagating at an angle of 50 degrees to the horizontal. These results are compared to those previously published (Keller and Veronis, 1969) for the analagous problem of Rossby waves propagating in the presence of random zonal currents that vary with latitude. (Author).
Author: Jeffrey M. Forbes
Publisher:
ISBN:
Category : Equations of motion
Languages : en
Pages : 32
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Book Description
The dispersion relation is derived for the ensemble-averaged wave in a Boussinesq fluid with a weak random vertical shear. The basic flow is assumed to be statistically homogeneous in space and time with zero mean. The phase velocity and decay rate are found for the two limiting cases where the wavelength is much greater and much smaller than the correlation length of the basic flow speeds. The decay rate is found to increase as the direction of propagation becomes more horizontal. However, the maximum decrease in phase velocity is found to occur when the wave is propagating at an angle of 50 degrees to the horizontal. These results are compared to those previously published (Keller and Veronis, 1969) for the analagous problem of Rossby waves propagating in the presence of random zonal currents that vary with latitude. (Author).
Author: Jeffrey M. Forbes
Publisher:
ISBN:
Category : Equations of motion
Languages : en
Pages : 0
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Book Description
The dispersion relation is derived for the ensemble-averaged wave in a Boussinesq fluid with a weak random vertical shear. The basic flow is assumed to be statistically homogeneous in space and time with zero mean. The phase velocity and decay rate are found for the two limiting cases where the wavelength is much greater and much smaller than the correlation length of the basic flow speeds. The decay rate is found to increase as the direction of propagation becomes more horizontal. However, the maximum decrease in phase velocity is found to occur when the wave is propagating at an angle of 50 degrees to the horizontal. These results are compared to those previously published (Keller and Veronis, 1969) for the analagous problem of Rossby waves propagating in the presence of random zonal currents that vary with latitude. (Author)
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 964
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: Bruce Sutherland
Publisher: Cambridge University Press
ISBN: 0521839157
Category : Science
Languages : en
Pages : 395
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Book Description
The first comprehensive treatment of the theory for small and large amplitude internal gravity waves, with illustrative examples and exercises.
Author: Lawrence Coy
Publisher:
ISBN:
Category :
Languages : en
Pages : 195
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Book Description
Author:
Publisher:
ISBN:
Category : Shock (Mechanics)
Languages : en
Pages : 488
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Author: Air Force Cambridge Research Laboratories (U.S.)
Publisher:
ISBN:
Category : Geophysics
Languages : en
Pages : 336
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Book Description
Author:
Publisher:
ISBN:
Category : Technology
Languages : en
Pages : 1726
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1296
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Book Description
Author: Mostafa M. Ibrahim
Publisher:
ISBN:
Category : Atmospheric waves
Languages : en
Pages : 272
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Book Description
"The linear and weakly non-linear limits of two-dimensional gravity waves in an incompressible, inviscid and stably stratified atmosphere are studied. The linear results indicate the growth of waves propagating upward leading to the breakdown of the linear theory. The three-wave resonant interaction theory indicates an energy cascade from a vertically propagating wave (primary wave) to waves having smaller absolute values of Doppler shifted frequency ((OMEGA)). When the non-dimensional parameter" --
