Magnetostrophic MRI in the earth's outer core

We show that a simple, modified version of the Magnetorotational Instability (MRI) can develop in the outer liquid core of the Earth, in the presence of a background shear. It requires either thermal wind, or a primary instability, such as convection, to drive a weak differential rotation within the...

Full description

Bibliographic Details
Main Authors: Petitdemange, L, Dormy, E, Balbus, S
Format: Journal article
Language:English
Published: 2008