Double-diffusive Convection in Magma Chambers: Single Or Multiple Layers?
An approximate set of equations applicable to double-diffusive convection in magma chambers has been solved in the steady state for a range of geologically relevant parameters. No evidence for the steady state existence of layered convection for conditions appropriate to magma chambers has been found. At large ratios of the thermal to chemical diffusivity (Lewis number, Le) the heat transport is independent of the Lewis number and equal to that found for thermal convection in a single component fluid. The vertical upward transport of light component varies directly with both the Rayleigh and Lewis numbers (Nuc ∼ Ra0.23 Le0.37).
F. J. Spera et al., "Double-diffusive Convection in Magma Chambers: Single Or Multiple Layers?," Geophysical Research Letters, American Geophysical Union (AGU), Jan 1986.
The definitive version is available at http://dx.doi.org/10.1029/GL013i002p00153
Mathematics and Statistics
Keywords and Phrases
mineralogy; petrology; rock chemistry; igneous petrology; volcanology; physics and chemistry of magma bodies
Article - Journal
© 1986 American Geophysical Union (AGU), All rights reserved.