Results 291 to 300 of about 154,413 (348)

On the Computation of Nonlinear Planetary Waves

Studies in Applied Mathematics, 1987
A numerical method is developed to solve a class of nonlinear, nonlocal eigenvalue problems defined in an infinite strip, and is applied to compute solitary planetary waves in a sheared zonal current on the beta‐plane. This method, an iterative procedure derived from the natural variational structure of these problems, is implemented in the physical ...
EYDELAND, A, Turkington, B
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Planetary shock waves

Deep Sea Research Part B. Oceanographic Literature Review, 1987
Abstract A number of general circulation models have recently been proposed that compute the steady-state structure of the general circulation. Observation of 18°C water formation, on the other hand, suggest the need for a study of the time-dependent large-scale structure of the oceans.
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A Planetary-Wave Climatology

Journal of the Atmospheric Sciences, 1981
Abstract Ultralong and long planetary waves are analyzed at the 500 mb level in terms of their amplitudes, phases and stationarity characteristics, the latter described in terms of a stationarity index SIn. This index consists of the ratio between planetary-wave amplitudes computed from time-averaged 500 mb height patterns, and the wave amplitudes ...
Elmar R. Reiter, Daniel Westhoff
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PLANETARY WAVES IN THE ATMOSPHERE

Journal of Meteorology, 1954
Abstract A numerical method is presented for solving the non-linear barotropic vorticity equation in spherical coordinates. It is shown that, when the stream function is expressed as a sum of surface spherical harmonics, the barotropic vorticity equation gives rise to harmonic tendency equations which express the time rate of change of the harmonic ...
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Hydromagnetic planetary waves

Journal of Fluid Mechanics, 1967
A study is made of hydromagnetic oscillations in a rotating fluid sphere. The basic state is chosen as a uniform current parallel to the axis of rotation. It is found that the non-dissipative normal modes are described by a modified form of the Poincaré eigenvalue problem. For small rotation rates, the lowest non-axisymmetric modes are unstable.
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