Small-scale Rossby and drift wave clusters
Large scale drift and Rossby wave turbulence
... Introduction Drift waves in plasmas and Rossby waves in the ocean and planetary atmospheres, though unrelated at the fi rst sight, have common features in their dynamics and statistics, which at a basic ...
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Rossby wave, drift wave and zonal flow turbulence
... Gustaf Rossby [60; 61] determined the velocity of these large scale flow patterns in the zonal direction which propagate westward in the atmosphere with very low ...
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The life cycle of drift wave turbulence driven by small scale instability
... The ZF saturation mechanism described in this Letter is remarkable because it is achieved entirely dynamically without the need to remove the small scale driving insta- bility or to invoke a dissipation ...
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Rossby wave turbulence
... sector, small amounts can move into the zonal sector, but not all can transfer as otherwise semi-action would be ...is small but finite and it was discovered that forbidden triads ...
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Rossby and drift wave turbulence and zonal flows : The Charney–Hasegawa–Mima model and its extensions
... primary wave. A numerical proof is provided for an the extra invariant in Rossby and drift wave turbulence – ...the wave kinetic equation which assumes weak wave amplitudes, it ...
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Dispersive effects in Rossby-wave hydraulics
... the CD integrations of HJH which become prohibitively computationally intensive as the disturbance to the interface lengthens. CD simulations can, however, follow flows after the interface overturns, as it will in flows ...
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Modulational instability of Rossby and drift waves and generation of zonal jets
... primary wave and the modulation belong to the same resonant triad that is non-degenerate, ...include wave vectors too close to k = 0 point where the two branches of the resonant curve ...for small ...
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Rossby-wave turbulence in a rapidly rotating sphere
... by Rossby waves, as predicted by Rhines (1975), and for which very little other evidence has been found ...injection scale. The strong rotation prevents any downward cascade to small scales where the ...
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The decay of cyclonic eddies by Rossby wave radiation
... zonal drift velocity of the vortex and the fact that a circular separatrix exists in the geostrophic streamfunction field in the frame of reference moving with the ...vanishingly small compared to the mean ...
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Nonlinear excitation of zonal flows by rossby wave turbulence
... plasma wave turbulence [3], where short-scale oscillations of the medium provide an arbitrary turbulent spectrum as the background for the excitation and absorption of large-scale ...appropriate ...
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Utility of Hovmöller diagrams to diagnose Rossby wave trains
... remove small-scale contributions. Then, Rossby wave breaking is identified through reversed meridional gradients of Ertel PV on an isentropic surface ...planetary wave breaking in the ...
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The statistical dynamics of turbulent Rossby wave flow over topography
... and Rossby wave turbulence on a generalized β-plane and in the presence of a large scale flow U ...large scale flow U ...the small-scales and the large scale flow U that allows ...
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A SIMPLE-MODEL OF ROSSBY-WAVE HYDRAULIC BEHAVIOR
... At early times, as shown in figure 11 (a), the flow seems to approach the hydraulically controlled solution, at least on the downstream side of the obstacle.. The bold c[r] ...
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Null modes effect in Rossby wave model
... The crucial importance of the proper introduction of normal variables in such systems is highlighted in Sect. 4. We con- sider the RHM-model as an example to which the HA can be directly applied to obtain analytical ...
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Rossby-Haurwitz wave perturbations under tropical forcing
... E-mail: [email protected] Received February 19, 2013; accepted May 5, 2014 RESUMEN Este trabajo explora el flujo zonal en forma de polinomios de Legendre. El flujo básico se divide en un flujo zonal simétrico y una onda de ...
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Large and small scale wave forecast in the Mediterranean Sea
... Of course, for the just mentioned reason, this is partly filtered out in the wave results. It is instructive to compare the performance of the father and son models considered here with those of global models, ...
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Equatorially trapped Rossby-gravity wave propagation in the Gulf of Guinea
... The consistency shown between the local rate of change of wave energy following a packet and the observations suggest that nonlinear inter- actions are relatively unimportan[r] ...
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Ocean Wave Model and Wave Drift Caused by the Asymmetry of Crest and Trough
... the wave drift possessing the same ...Stokes drift is done by Taylor expansion around the particle’s equilibrium which requires a small wave slope δ ...the wave mechanism , it ...
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A singular vortex Rossby wave packet within a rapidly rotating vortex
... the wave packet that has been omitted in the nonlinear CL dynamics until ...the wave packet, so ignoring this mean flow constitutes a serious ...a Rossby wave packet can become ...gravity ...
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Drift wave models for 3-dimensional plasmas
... In chapters 2 and 3, some key attributes of the magnetic field topology of the general screw pinch, helically-symmetric configuration , toka- mak configuration and s[r] ...
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