Three branches of dynamo action
| Autor: | Ludovic Petitdemange, Emmanuel Dormy, Ludivine Oruba |
|---|---|
| Přispěvatelé: | Département de Mathématiques et Applications - ENS Paris (DMA), Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA (UMR_8112)), Sorbonne Université (SU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Observatoire de Paris, Université Paris sciences et lettres (PSL) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Fluid Flow and Transfer Processes
Physics Condensed Matter::Quantum Gases [PHYS]Physics [physics] [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] Mechanical Engineering General Physics and Astronomy FOS: Physical sciences State (functional analysis) 01 natural sciences Action (physics) 010305 fluids & plasmas Geophysics (physics.geo-ph) Physics::Geophysics Physics - Geophysics Classical mechanics 0103 physical sciences Dynamo theory Limit (mathematics) 10. No inequality [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] 010303 astronomy & astrophysics Dynamo |
| Zdroj: | Fluid Dynamics Research Fluid Dynamics Research, IOP Publishing, 2018, 50 (1), pp.011415. ⟨10.1088/1873-7005/aa769c⟩ |
| ISSN: | 0169-5983 1873-7005 |
| DOI: | 10.1088/1873-7005/aa769c⟩ |
| Popis: | 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. Comment: 21 pages, 12 figures Accepted Manuscript Fluid Dynamics Research (online 2 June 2017) |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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