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arXiv · 1612.07655

Three Branches of Dynamo Action

Emmanuel Dormy·Ludivine Oruba·Ludovic Petitdemange
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Abstract

In addition to the weak-dipolar state and to the fluctuating-multipolar state, widely discussed in the literature, a third regime has been identified in Dormy (2016). It corresponds to a strong-dipolar branch which appears to approach, in a numerically affordable regime, the magnetostrophic limit relevant to the dynamics of the Earth's core. We discuss the transitions between these states and point to the relevance of this strong-dipolar state to Geodynamo modelling.

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Emmanuel Dormy, Ludivine Oruba, Ludovic Petitdemange. 2017-12-21. Three Branches of Dynamo Action. https://doi.org/10.1088/1873-7005%2Faa769c

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