Solar and Planetary Dynamos

Dynamo theory is the study of how large-scale magnetic fields can arise in bodies such as the Earth, Sun and stars, and it brings together researchers in such diverse subjects as geophysics, astronomy and nuclear reactor technology. In this book are papers on the theory of dynamos, delivered at the Isaac Newton Institute for Mathematical Sciences in Cambridge in September 1992, and these have been carefully brought together to form a unified presentation. Topics covered include: modelling of solar magnetic field generation, theoretical studies of the galaxies, and papers on fast dynamos, study of magnetic field regeneration in fluid of very high electrical conductivity. This volume represents a comprehensive record of research into the theory of dynamos.

Preface
Magnetic noise and the galactic dynamo
On the oscillation in model Z
Nonlinear dynamos in a spherical shell
The onset of dynamo action in alpha-lambda dynamos
Multifractality, near-singularities and the role of stretching in turbulence
Note on perfect fast dynamo action in a large-amplitude SFS map
A thermally driven disc dynamo
Magnetic instabilities in rapidly rotating systems
Modes of a flux ring lying in the equator of a star
A nonaxisymmetric dynamo in toroidal geometry
Simulating the interaction of convection with magnetic fields in the sun
Experimental aspects of a laboratory scale liquid sodium dynamo model
Influence of the period of an ABC flow on its dynamo action
Numerical calculations of dynamos for ABC and related flows
Incompressible Euler equations
On the quasimagnetostrophic asymptotic approximation related to solar activity
Simple dynamical fast dynamos
A numerical study of dynamos in spherical shells with conducting boundaries
Non-axisymmetric shear layers in a rotating spherical shell
Testing for dynamo action
Alpha-quenching in cylindrical magnetoconvection
On the stretching of line elements in fluids: an approach from different geometry
Instabilities of tidally and precessionally induced flows
Probability distribution of passive scalars with nonlinear mean gradient
Magnetic fluctuations in fast dynamos
A statistical description of MHD turbulence in laboratory plasma
Compressible magnetoconvection in three dimensions
The excitation of nonaxisymmetric magnetic fields in galaxies
Localized magnetic fields in a perfectly conducting fluid
Turbulent dynamo and the geomagnetic secular variation
On-off intermittency: general description and feedback model
Dynamo action in a nearly integrable chaotic flow
The dynamo mechanism in the deep convection zone of the sun
Shearing instabilities in magnetoconvection
On the role of rotation of the internal core relative to the mantle
Evolution of magnetic fields in a swirling jet
Analytic fast dynamo solution for a two-dimensional pulsed flow
On magnetic dynamos in thin accretion disks around compact and young stars
The strong field branch of the Childress-Soward dynamo
Evidence for the suppression of the alpha-effect by weak magnetic fields
Turbulent magnetic transport effects and their relation to magnetic field intermittency
Proving the existence of negative variation of electrical conductivity
Spherical inertial oscillation and convection
Hydrodynamics stability of the ABC flow
Dynamos with ambipolar diffusion
Subject index
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Solar and Planetary Dynamos

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