Physics
Scientific paper
Sep 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982pepi...29..281p&link_type=abstract
(NATO, Advanced Study Institute on Early Evolution of the Planets and their Atmospheres, Newcastle-upon-Tyne, England, Mar. 23-A
Physics
30
Convective Heat Transfer, Earth Mantle, Planetary Evolution, Planetary Temperature, Continental Drift, Earth Crust, Forced Convection, Gravity Anomalies, Plates (Tectonics), Polar Wandering (Geology), Thermal Boundary Layer, Viscosity
Scientific paper
The mantle convective circulation which is required to understand plate tectonics and continental drift is analyzed, presenting the arguments for and against the crucial notion that the main circulation has a depth scale equal to the mantle thickness. Data which require that the viscosity of the mantle be essentially uniform are described, and recent results from high Rayleigh number simulations of whole-mantle convection are discussed. An attempt is made to address the question of the extent to which the mantle convective circulation is forced by heating from within. Using the idea of parameterized convection, the radial heat transfer by the mantle convective circulation is included in a thermal history of the earth. This model contains an interesting explanation of the fact that no crustal rocks with ages over 3.8 Ga have ever been found.
Jarvis Gary T.
Peltier Richard W.
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