Fortelling catastrophes?

Yves Pomeau; Martine Le Berre

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arXiv · 1102.5637

Fortelling catastrophes?

Yves Pomeau·Martine Le Berre

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Abstract

A generic saddle-node bifurcation is proposed to modelize fast transitions of finite amplitude arising in geophysical (and perhaps other) contexts, when they result from the intrinsic dynamics of the system. The fast transition is generically preceded by a precursor phase which is less rapid, that we characterize. In this model, if an external source of noise exist, the correlation length of the fluctuations increases before the transition, and its spectrum tends to drift towards lower frequencies. This change in the fluctuations could be a way of detecting catastrophic events before they happen.

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Yves Pomeau, Martine Le Berre. 2011-02-28. Fortelling catastrophes?. https://arxiv.org/abs/1102.5637

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