Whole planet cooling and the radiogenic heat source contents of the earth and moon

Details Whole planet cooling and the radiogenic heat source contents of the earth and moon Whole planet cooling and the radiogenic heat source contents of the earth and moon

May 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jgr....85.2531s&link_type=abstract

Journal of Geophysical Research, vol. 85, May 10, 1980, p. 2531-2538.

Physics

Geophysics

55

Earth Mantle, Free Convection, Lunar Mantle, Mathematical Models, Radioactivity, Surface Cooling, Convective Heat Transfer, Earth Surface, Enthalpy, Lunar Surface, Thermal Energy, Viscosity, Planets, Earth, Moon, Heat Source, Heat Flow, Radioactivity, Models, Thermal Evolution, Mantle, Convection, Rheology, Viscosity, Cooling, Geochemistry, Parameters, Surface, Temperatures, Time Dependency, Heat Flux, Lithosphere, Thickness, Thermodynamics, Analysis, Cores, Conductivity, Layers, Geothermal Properties, Geop

Scientific paper

Thermal evolution models based on subsolidus whole mantle convection which indicate that the surface heat flows of the earth and the moon do not necessarily provide good measures of the total amounts of radioactives in these bodies have been constructed. These models assume an initially hot state, but with a wide variety of choices for the parameters characterizing the rheology and convective vigor. All models are constrained to be consistent with present-day surface heat fluxes, and many of the terrestrial models are consistent with the mantle viscosities indicated by postglacial rebound. In the lunar models, heat generation is typically only 70-80% of the surface heat flow, even with allowance for the strong near-surface enhancement of radioactives. Despite the simplicity of these models, the persistence of a significant difference between heat generation and heat output indicates that this difference is real and should be incorporated in geochemical modeling of planets.

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