Journal ArticleDOI
The Maximum Principle and the Global Attractor for the Dissipative 2D Quasi-Geostrophic Equations
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TLDR
In this paper, the authors studied the long time behavior of the solutions to the two dimensional dissipative quasi-geostrophic equations and obtained a new positivity lemma which improved a previous version of A. Cordoba and D. Duygulu.Abstract:
The long time behavior of the solutions to the two dimensional dissipative quasi-geostrophic equations is studied. We obtain a new positivity lemma which improves a previous version of A. Cordoba and D. Cordoba [10] and [11]. As an application of the new positivity lemma, we obtain the new maximum principle, i.e. the decay of the solution in Lp for anyp ∈ [2,+∞) when f is zero. As a second application of the new positivity lemma, for the sub-critical dissipative case with Open image in new window the existence of the global attractor for the solutions in the space Hs for any s>2(1−α) is proved for the case when the time independent f is non-zero. Therefore, the global attractor is infinitely smooth if f is. This significantly improves the previous result of Berselli [2] which proves the existence of an attractor in some weak sense. For the case α=1, the global attractor exists in Hs for any s≥0 and the estimate of the Hausdorff and fractal dimensions of the global attractor is also available.read more
Citations
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Journal ArticleDOI
A New Bernstein’s Inequality and the 2D Dissipative Quasi-Geostrophic Equation
TL;DR: In this article, a new Bernstein's inequality was proposed to show the global well-posedness of the 2D quasi-geostrophic equation with the critical and super-critical dissipation for the small initial data in the critical Besov space.
Journal ArticleDOI
Existence and Uniqueness of the Solution to the Dissipative 2D Quasi-Geostrophic Equations in the Sobolev Space
TL;DR: In this article, the existence and uniqueness of the solution local in time is proved in the Sobolev space when s ≥ 2(1−α) and the initial data is small.
Journal ArticleDOI
Lower Bounds for an Integral Involving Fractional Laplacians and the Generalized Navier-Stokes Equations in Besov Spaces
TL;DR: In this paper, lower bounds for the generalized Navier-stokes equations in Besov spaces were derived by combining pointwise inequalities for (−Δ)======πασεερασαστε with Bernstein's inequalities for fractional derivatives.
Journal ArticleDOI
Generalized surface quasi-geostrophic equations with singular velocities
TL;DR: In this paper, the existence and uniqueness results for two families of active scalar equations with velocity fields determined by the scalars through very singular integrals were established, where the boundary case β = 1 corresponds to the generalized surface quasigeostrophic (SQG) equation and the situation is more singular for β > 1.
Journal ArticleDOI
Regularity of Hölder continuous solutions of the supercritical quasi-geostrophic equation
Peter Constantin,Jiahong Wu +1 more
TL;DR: In this article, a regularity result for weak solutions of the 2D quasi-geostrophic equation with supercritical ( α 1 / 2 ) dissipation ( − Δ ) α was presented.
References
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Singular Integrals and Differentiability Properties of Functions.
TL;DR: Stein's seminal work Real Analysis as mentioned in this paper is considered the most influential mathematics text in the last thirty-five years and has been widely used as a reference for many applications in the field of analysis.
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TL;DR: In this paper, the authors consider the problem of finding solutions to elliptic boundary value problems in Spaces of Analytic Functions and of Class Mk Generalizations in the case of distributions and Ultra-Distributions.
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Geophysical Fluid Dynamics
TL;DR: In this article, the authors propose a quasigeostrophic motion of a Stratified Fluid on a Sphere (SFL) on a sphere, which is based on an Inviscid Shallow-Water Theory.
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Navier-Stokes Equations: Theory and Numerical Analysis
TL;DR: This paper presents thediscretization of the Navier-Stokes Equations: General Stability and Convergence Theorems, and describes the development of the Curl Operator and its application to the Steady-State Naviers' Equations.