Toggle Main Menu Toggle Search

Open Access padlockePrints

Kinematic dynamos driven by thermal-wind flows

Lookup NU author(s): Dr Graeme Sarson

Downloads

Full text for this publication is not currently held within this repository. Alternative links are provided below where available.


Abstract

Most kinematic dynamos have been constructed without reference to the magneto-hydrodynamics applicable to the geodynamo; none of the simple cases in the literature are consistent with the magnetostrophic regime expected in the Earth's core. A simple flow that can be driven by the thermal-wind term present in this regime is constructed. This flow is shown to act as a dynamo, via direct three-dimensional calculations and via αω-calculations in the axisymmetric Braginsky limit. The temperature field and heat-source distribution necessary to drive this velocity are considered; although artificial, these forms could be of use in the construction of laboratory dynamos.


Publication metadata

Author(s): Sarson GR

Publication type: Article

Publication status: Published

Journal: Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences

Year: 2003

Volume: 459

Issue: 2033

Pages: 1241-1259

ISSN (print): 1364-5021

ISSN (electronic): 1471-2946

Publisher: Royal Society Publishing

URL: http://dx.doi.org/10.1098/rspa.2002.1073

DOI: 10.1098/rspa.2002.1073


Altmetrics

Altmetrics provided by Altmetric


Share