Dynamos with weakly convecting outer layers : implications for core-mantle boundary interaction

  title={Dynamos with weakly convecting outer layers : implications for core-mantle boundary interaction},
  author={Binod Sreenivasan and David Gubbins},
Convection in the Earth’s core is driven much harder at the bottom than the top. This is partly because the adiabatic gradient steepens towards the top, partly because the spherical geometry means the area involved increases towards the top, and partly because compositional convection is driven by light material released at the lower boundary and remixed uniformly throughout the outer core, providing a volumetric sink of buoyancy. We have therefore investigated dynamo action of thermal… CONTINUE READING
Highly Cited
This paper has 42 citations. REVIEW CITATIONS


Publications referenced by this paper.
Showing 1-10 of 27 references

Azimuthal winds, convection and dynamo action in the polar regions of planetary cores

B. Sreenivasan, C. A. Jones
Geophys. Astrophys. Fluid Dynam., • 2006
View 4 Excerpts
Highly Influenced

Convection in a rotating spherical fluid shells with inhomogeneous heat flux at the outer boundary

S. J. Gibbons, D. Gubbins, K. Zhang
Geophys. Astrophys. Fluid Dynam., • 2007
View 2 Excerpts

A detailed study of the polarity reversal mechanism in a numerical

J. Wicht, P. Olson
Geophys. J. Int., • 2006

The Boussinesq and anelastic liquid approximation for convection in the Earth’s core

A. P. Anufriev, C. A. Jones, A. M. Soward
Phys. Earth Planet. Inter., • 2005
View 1 Excerpt

Secular variation in numerical geodynamo models with lateral variations of boundary heat flow

U. R. Christensen, P. Olson
Phys. Earth Planet. Inter., • 2003
View 1 Excerpt

Similar Papers

Loading similar papers…