Axisymmetric spherical shell models of mantle convection with variable properties and free and rigid lids

A. M. Leitch, D. A. Yuen, C. L. Lausten

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Axisymmetric spherical shell numerical simulations of mantle convection were carried out to investigate the influence of two end-member surface stress conditions: stress-free and rigid. These correspond approximately to a subducting or a rigid lithosphere and can be seen as end-member models of the surface of Venus. It is shown how the temperature, speed and vorticity fields change qualitatively and quantitatively with surface temperature, surface stress condition, internal heating and viscosity distribution. Among the significant results, it is found that a rigid lid and viscosity which increases with depth both promote steady large-scale circulation with smaller-scale circulation in the upper mantle. -from Authors

Original languageEnglish (US)
Pages (from-to)20,899-20,923
JournalJournal of Geophysical Research
Volume97
Issue numberE12
DOIs
StatePublished - Jan 1 1992

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