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Effect of thermal diffusion on the stability of strongly tilted mantle plume tails

Kerr, Ross; Meriaux, Catherine; Lister, John R.

Description

The effect of thermal diffusion on the stability of strongly tilted mantle plume tails is explored by investigating experimentally and numerically the gravitational instability of a rising horizontal cylindrical region of buoyant viscous fluid. At large viscosity ratios, we find that the instability is unaffected by diffusion when the Rayleigh number Ra is greater than about 300. When Ra is less than 300, diffusion significantly increases the time for instability, as the rising fluid region...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
URI: http://hdl.handle.net/1885/25091
Source: Journal of Geophysical Research
DOI: 10.1029/2007JB005510

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