Physics
Scientific paper
Feb 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989georl..16..179g&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 16, Feb. 1989, p. 179-182.
Physics
58
Convective Heat Transfer, Geotemperature, Plates (Tectonics), Viscous Fluids, Dynamic Models, Nusselt Number, Planetary Evolution, Rayleigh Number, Rayleigh-Benard Convection
Scientific paper
The heat transport by a viscous fluid with temperature dependent viscosity has been studied numerically. As opposed to previous models, the top surface of the fluid clearly defines a tectonic plate with horizontally uniform velocity and subduction. Past studies failed to incorporate plates resulting in inefficient heat transport. With tectonic plates, the heat transport is as efficient as Rayleigh-Benard convection with constant viscosity; there is a strong buffering between internal temperature and heat loss. Past studies of parameterized convection which incorporated parameters indicative of a strong buffering between internal temperature and total heat output still provide the most physically plausible representation of the earth's thermal evolution.
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