Asymptotic convergence rate of supercritical surface quasi-geostrophic equation in Morrey space

Asymptotic convergence rate of supercritical surface quasi-geostrophic equation in Morrey space
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Morrey空间中超临界表面准地转方程的渐近收敛速度

DOI:
10.1016/j.jmaa.2015.01.037
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发表时间:
2015-05
影响因子:
1.3
通讯作者:
Dong, Bo-Qing
Dong, Bo-Qing
中科院分区:
数学3区
文献类型:
--
作者:
Jia, Yan;Dong, Bo-Qing

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本文研究了Morrey空间中超临界曲面准地转方程的渐近收敛速度。证明了若超临界表面准地转方程的整体解θ(x,t)在临界Morrey空间<$0 ∞ <$$> θ(t)<$Mstecp,q(R2)rdt <∞(其中α r+ 2 p= α,2 α< p<∞)中满足增长条件,则扰动准地转方程的每一个扰动弱解θ <$(x,t)渐近收敛于θ(x,当t→∞时,最优速率<$θ <$(t)− θ(t)<$L2 = O((1+ t)− 1 α).特别地,允许初始扰动较大。研究结果基于分数阶拉普拉斯谱分解方法和Morrey空间技术。
In this paper the asymptotic convergence rate of the supercritical surface quasi-geostrophic equation in Morrey space is investigated. It is shown that if the global solution θ (x, t) of the supercritical surface quasi-geostrophic equation satisfies the growth condition in critical Morrey space∫ 0∞‖∇ θ (t)‖ M˙ p, q (R 2) r d t<∞ for α r+ 2 p= α, 2 α< p<∞, then every perturbed weak solution θ˜(x, t) of the perturbed quasi-geostrophic equation converges asymptotically to θ (x, t) with the optimal rate‖ θ˜(t)− θ (t)‖ L 2= O ((1+ t)− 1 α), as t→∞. In particular, the initial perturbation is allowed large. The findings are based on the spectral decomposition methods of fractional Laplace and Morrey space technique.
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发表时间: 2008-04
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