On the relationship between tectonic plates and thermal mantle plume morphology

Details On the relationship between tectonic plates and thermal mantle plume morphology On the relationship between tectonic plates and thermal mantle plume morphology

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993lpi....24..865l&link_type=abstract

In Lunar and Planetary Inst., Twenty-Fourth Lunar and Planetary Science Conference. Part 2: G-M p 865-866 (SEE N94-16173 03-91)

Mathematics

Logic

1

Convective Heat Transfer, Mathematical Models, Plates (Tectonics), Plumes, Tectonics, Thermal Boundary Layer, Morphology, Planetary Geology, Temperature Distribution, Velocity Distribution, Viscosity

Scientific paper

Models incorporating plate-like behavior, i.e., near uniform surface velocity and deformation concentrated at plate boundaries, into a convective system, heated by a mix of internal and basal heating and allowing for temperature dependent viscosity, were constructed and compared to similar models not possessing plate-like behavior. The simplified numerical models are used to explore how plate-like behavior in a convective system can effect the lower boundary layer from which thermal plumes form. A principal conclusion is that plate-like behavior can significantly increase the temperature drop across the lower thermal boundary layer. This temperature drop affects the morphology of plumes by determining the viscosity drop across the boundary layer. Model results suggest that plumes on planets possessing plate-like behavior, e.g., the Earth, may differ in morphologic type from plumes on planets not possessing plate-like behavior, e.g., Venus and Mars.

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