Smooth solutions of the surface semi-geostrophic equations

Smooth solutions of the surface semi-geostrophic equations
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地表半地转方程的光滑解

DOI:
10.1007/s00526-019-1664-3
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发表时间:
2019
影响因子:
2.1
通讯作者:
Lisai S
Lisai S
中科院分区:
数学2区
文献类型:
--
作者:
Lisai S

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自 20 世纪 70 年代 Hoskins 的工作以来,半地转方程引起了物理和数学界的关注,因为它们能够模拟旋转主导流中锋面的形成,并且与最优输运理论相关。在本文中,我们研究了一个主动标量方程,其活动是通过与无限带上的完全非线性二阶诺依曼边值问题相关的诺伊曼到狄利克雷图来确定的,该方程模拟了恒定位涡状态下的半地转流。该系统是欧拉半地转流在最初由霍斯金斯提出的坐标系中的表达,我们将其称为霍斯金斯坐标。我们获得了 Hölder 空间中该主动标量方程经典解的局部时间存在性和唯一性的结果。
The semi-geostrophic equations have attracted the attention of the physical and mathematical communities since the work of Hoskins in the 1970s owing to their ability to model the formation of fronts in rotation-dominated flows, and also to their connection with optimal transport theory. In this paper, we study an active scalar equation, whose activity is determined by way of a Neumann-to-Dirichlet map associated to a fully nonlinear second-order Neumann boundary value problem on the infinite strip, that models a semi-geostrophic flow in regime of constant potential vorticity. This system is an expression of an Eulerian semi-geostrophic flow in a coordinate system originally due to Hoskins, to which we shall refer asHoskins’ coordinates. We obtain results on the local-in-time existence and uniqueness of classical solutions of this active scalar equation in Hölder spaces.
DOI: --
发表时间: 2012
期刊:
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具有奇异初始数据的半地转系统的拉格朗日解
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