Persistent switching near a heteroclinic model for the geodynamo problem

• Tipo: Artigo em Revista Científica Internacional
• Data: 2013

Autores

Alexandre A P Rodrigues (Autor) FCUP

Indexação

ISI Web of Knowledge - 4 Citações

Scopus - 3 Citações

Outras Informações

ID Authenticus: P-002-0P6

DOI: 10.1016/j.chaos.2012.12.005

Abstract (EN): Modelling chaotic and intermittent behaviour, namely the excursions and reversals of the geomagnetic field, is a big problem far from being solved. Armbruster et al. [5] considered that structurally stable heteroclinic networks associated to invariant saddles may be the mathematical object responsible for the aperiodic reversals in spherical dynamos. In this paper, invoking the notion of heteroclinic switching near a network of rotating nodes, we present analytical evidences that the mathematical model given by Melbourne et al. [19] contributes to the study of the georeversals. We also present numerical plots of solutions of the model, showing the intermittent behaviour of trajectories near the heteroclinic network under consideration.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 14