The regularity of the boundary of vortex patches for the quasi-geostrophic shallow-water equations

Fuente: arXiv
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Autores principales: Magaña, Marc, Mateu, Joan, Orobitg, Joan
Formato: Preprint
Publicado: 2026
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author Magaña, Marc
Mateu, Joan
Orobitg, Joan
author_facet Magaña, Marc
Mateu, Joan
Orobitg, Joan
contents We prove the persistence of boundary smoothness of vortex patches for the quasi-geostrophic shallow-water (QGSW) equations. The QGSW equations generalize the Euler equations by including an additional parameter, the Rossby radius $\varepsilon^{-1}$, which modifies the relationship between the streamfunction and the (potential) vorticity. In addition, we prove that solutions of the QGSW equations converge locally in time to the corresponding Euler solutions as $\varepsilon \to 0$ in little Hölder spaces.
format Preprint
id arxiv_https___arxiv_org_abs_2602_22767
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle The regularity of the boundary of vortex patches for the quasi-geostrophic shallow-water equations
Magaña, Marc
Mateu, Joan
Orobitg, Joan
Analysis of PDEs
35Q31, 35Q35 (Primary), 35B65, 35Q49, 35B30 (Secondary)
We prove the persistence of boundary smoothness of vortex patches for the quasi-geostrophic shallow-water (QGSW) equations. The QGSW equations generalize the Euler equations by including an additional parameter, the Rossby radius $\varepsilon^{-1}$, which modifies the relationship between the streamfunction and the (potential) vorticity. In addition, we prove that solutions of the QGSW equations converge locally in time to the corresponding Euler solutions as $\varepsilon \to 0$ in little Hölder spaces.
title The regularity of the boundary of vortex patches for the quasi-geostrophic shallow-water equations
topic Analysis of PDEs
35Q31, 35Q35 (Primary), 35B65, 35Q49, 35B30 (Secondary)
url https://arxiv.org/abs/2602.22767