منابع مشابه
A Theory of Baroclinic Turbulence
Understanding the physical mechanism maintaining fluid turbulence remains a fundamental theoretical problem. The two-layer model is an analytically and computationally simple system in which the dynamics of turbulence can be conveniently studied; in this work, a maximally simplified model of the statistically steady turbulent state in this system is constructed to isolate and identify the essen...
متن کاملFormation of Jets by Baroclinic Turbulence
Turbulent fluids are frequently observed to spontaneously self-organize into large spatial-scale jets; geophysical examples of this phenomenon include the Jovian banded winds and the earth’s polar-front jet. These relatively steady large-scale jets arise from and are maintained by the smaller spatialand temporalscale turbulence with which they coexist. Frequently these jets are found to be adju...
متن کاملEffects of Ambient Turbulence on Interleaving at a Baroclinic Front
In this paper the authors investigate the action of ambient turbulence on thermohaline interleaving using both theory and numerical calculations in combination with observations from Meddy Sharon and the Faroe Front. The highly simplified models of ambient turbulence used previously are improved upon by allowing turbulent diffusivities of momentum, heat, and salt to depend on background gradien...
متن کاملJet Formation and Evolution in Baroclinic Turbulence with Simple Topography
Satellite altimetry and high-resolution ocean models indicate that the Southern Ocean is comprised of an intricate web of narrow, meandering jets that undergo spontaneous formation, merger and splitting events, and rapid latitude shifts over periods of weeks to months. The role of topography in controlling jet variability is explored using over 100 simulations from a doubly-periodic, forced-dis...
متن کاملToward a Theory of Interstellar Turbulence. I. Weak Alfvenic Turbulence
We study weak Alfvenic turbulence of an incompressible, magnetized fluid in some detail, with a view to developing a firm theoretical basis for the dynamics of small-scale turbulence in the interstellar medium. We prove that resonant 3-wave interactions are absent. We also show that the Iroshnikov-Kraichnan theory of incompressible, magnetohydrodynamic turbulence-which is widely accepted--descr...
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ژورنال
عنوان ژورنال: Journal of the Atmospheric Sciences
سال: 2009
ISSN: 1520-0469,0022-4928
DOI: 10.1175/2009jas2989.1