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Type: Artigo de periódico
Title: Weak stability of Lagrangian solutions to the semigeostrophic equations
Author: Faria, JCO
Lopes, MC
Lopes, HJN
Abstract: In (Cullen and Feldman 2006 SIAM J. Math. Anal. 37 137-95), Cullen and Feldman proved the existence of Lagrangian solutions for the semigeostrophic system in physical variables with initial potential vorticity in L(p), p > 1. Here, we show that a subsequence of the Lagrangian solutions corresponding to a strongly convergent sequence of initial potential vorticities in L(1) converges strongly in L(q), q < infinity, to a Lagrangian solution, in particular extending the existence result of Cullen and Feldman to the case p = 1. We also present a counterexample for Lagrangian solutions corresponding to a sequence of initial potential vorticities converging in BM. The analytical tools used include techniques from optimal transportation, Ambrosio's results on transport by BV vector fields and Orlicz spaces.
Country: Inglaterra
Editor: Iop Publishing Ltd
Rights: fechado
Identifier DOI: 10.1088/0951-7715/22/10/011
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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