Effects from equation of state and rheology in dissipative heating in compressible mantle convection
Abstract
The effects of compressibility on mantle convection are considered, incorporating the effects of equations of state and rheology in the dissipative heating term of the energy equation. The ways in which compression may raise the interior mantle temperature are explicitly demonstrated, and it is shown how this effect can be used to constrain some of the intrinsic parameters associated with the equation of state in the mantle. It is concluded that the coupling between variable viscosity and equation of state in dissipative heating is potentially an important mechanism in mantle convection. These findings emphasize that rheology, equation of state, and radiogenic heating are all linked to each other by nonlinear thermomechanical couplings.
- Publication:
-
Nature
- Pub Date:
- March 1987
- DOI:
- 10.1038/326067a0
- Bibcode:
- 1987Natur.326...67Y
- Keywords:
-
- Convective Heat Transfer;
- Earth Mantle;
- Energy Dissipation;
- Equations Of State;
- Rheology;
- Compressibility Effects;
- Temperature Gradients;
- Thermodynamic Properties;
- Viscosity;
- Geophysics