Physics
Scientific paper
Dec 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984pepi...36..181f&link_type=abstract
(International Association of Seismology and Physics of the Earth's Interior, Symposium on Quantitative Geodynamics Lithospheric
Physics
52
Lithosphere, Oceans, Pressure Dependence, Rheology, Temperature Dependence, Thermodynamics, Constitutive Equations, Finite Element Method, Heat Transmission, Rayleigh Number, Seismology, Steady State, Strain Rate, Wavelengths
Scientific paper
The evolution of the oceanic lithosphere is studied using a thermomechanical approach. The basic equations, initial and boundary conditions, and rheological laws involved are first described, and the stability of the lithosphere and the nature of the steady-state solutions are discussed. Time-dependent solutions for the growing lithosphere are obtained by solving the complete two-dimensional equations with a finite-element method and by a single-mode, mean-field scheme. The latter approach allows a larger sampling of the parameter space to be obtained than would be possible with the full set of convective equations. The influence of secondary convection on short-wavelength features of heat flow, topography, and gravity is presented. The variation of large-scale geophysical observables with age is studied, and the aging of the lithosphere is discussed.
Fleitout Luce
Yuen Dave A.
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