On variational data assimilation for 1D and 2D fluvial hydraulics

Igor Gejadze 1, 2 Marc Honnorat 1, 2 François-Xavier Le Dimet 1, 2 Jerome Monnier 1, 2
1 MOISE - Modelling, Observations, Identification for Environmental Sciences
Inria Grenoble - Rhône-Alpes, UJF - Université Joseph Fourier - Grenoble 1, INPG - Institut National Polytechnique de Grenoble , CNRS - Centre National de la Recherche Scientifique : UMR5227
2 MOISE - Modelling, Observations, Identification for Environmental Sciences
Inria Grenoble - Rhône-Alpes, LJK - Laboratoire Jean Kuntzmann, INPG - Institut National Polytechnique de Grenoble
Abstract : We address two problems related to variational data assimilation (VDA) as applied to river hydraulics (1D and 2D shallow water models). First, we seek to estimate accurately some parameters such as the inflow discharge, manning coefficients, the topography and/or the initial state. We develop a method which allow to assimilate lagrangian data (trajectory particles at the surface e.g. extracted from video images). Second, we develop a joint data assimilation - coupling method. We seek to couple accurately a 1D global net-model (rivers net) and a local 2D shallow water model (zoom into a flooded area), while we assimilate data. Numerical twin experiments are presented.
Type de document :
Communication dans un congrès
European Conference on Mathematics for Industry (14th ECMI), Jul 2006, Madrid, Spain. Springer, Mathematics in Industry, 12, pp.361-365, 2008, Progress in Industrial Mathematics at ECMI 2006. 〈10.1007/978-3-540-71992-2_53〉
Liste complète des métadonnées

Littérature citée [5 références]  Voir  Masquer  Télécharger

https://hal.inria.fr/inria-00259096
Contributeur : Jerome Monnier <>
Soumis le : mardi 26 février 2008 - 16:23:04
Dernière modification le : mercredi 6 juin 2018 - 01:10:51
Document(s) archivé(s) le : jeudi 20 mai 2010 - 18:45:29

Fichier

MonnierEtAl.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Collections

Citation

Igor Gejadze, Marc Honnorat, François-Xavier Le Dimet, Jerome Monnier. On variational data assimilation for 1D and 2D fluvial hydraulics. European Conference on Mathematics for Industry (14th ECMI), Jul 2006, Madrid, Spain. Springer, Mathematics in Industry, 12, pp.361-365, 2008, Progress in Industrial Mathematics at ECMI 2006. 〈10.1007/978-3-540-71992-2_53〉. 〈inria-00259096〉

Partager

Métriques

Consultations de la notice

594

Téléchargements de fichiers

195