Nonlinearity in a dynamo
Using a rotating flat layer heated from below as an example, we consider effects which lead to stabilizing an exponentially growing magnetic field in magnetostrophic convection in transition from the kinematic dynamo to the full non-linear dynamo. We present estimates of the energy redistribution ov...
Saved in:
Published in | Geophysical and astrophysical fluid dynamics Vol. 104; no. 5-6; pp. 491 - 504 |
---|---|
Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Abingdon
Taylor & Francis Group
01.10.2010
Taylor & Francis Ltd |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Using a rotating flat layer heated from below as an example, we consider effects which lead to stabilizing an exponentially growing magnetic field in magnetostrophic convection in transition from the kinematic dynamo to the full non-linear dynamo. We present estimates of the energy redistribution over the spectrum and helicity quenching by the magnetic field. We also study the alignment of the velocity and magnetic fields. These regimes are similar to those in planetary dynamo simulations. |
---|---|
Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0309-1929 1029-0419 |
DOI: | 10.1080/03091929.2010.496365 |