| Type de publication : |
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Articles dans des revues avec comité de lecture |
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| Domaine : |
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| Titre : |
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The geometry of a vorticity model equation |
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| Auteur(s) : |
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Joachim Escher ( ) 1, Boris Kolev ( ) 2, Marcus Wunsch ( ) 3 |
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| Laboratoire : |
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| Résumé : |
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We provide rigorous evidence of the fact that the modified Constantin-Lax-Majda equation modeling vortex and quasi-geostrophic dynamics describes the geodesic flow on the subgroup of orientation-preserving diffeomorphisms fixing one point, with respect to right-invariant metric induced by the homogeneous Sobolev norm $H^{1/2}$ and show the local existence of the geodesics in the extended group of diffeomorphisms of Sobolev class $H^{k}$ with $k\ge 2$. |
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Langue du texte intégral : |
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Anglais |
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Date de production, écriture : |
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22/10/2010 |
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| Journal : |
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Communications on Pure and Applied Analysis |
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| Audience : |
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internationale |
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| Date de publication : |
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07/2012 |
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Date de publication électronique : |
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01/2012 |
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| Volume : |
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11 |
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| Numéro : |
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4 |
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| Page, identifiant, ... : |
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1407 - 1419 |
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| Mots Clés : |
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Constantin-Lax-Majda equation – Euler equation on diffeomorphisms group of the circle |
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| Classification : |
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MSC: 58D05, 58B25, 35Q35, 37K65 |
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| Commentaire : |
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24 pages |
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| Contrat, financement : |
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JSPS Postdoctoral Fellowship P09024 |
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