Physics
Scientific paper
Sep 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978pepi...17..147b&link_type=abstract
Physics of the Earth and Planetary Interiors, vol. 17, Sept. 1978, p. 147-162.
Physics
5
Earth Core, Earth Mantle, Earth Planetary Structure, Equations Of State, Seismic Waves, Adiabatic Conditions, Bulk Modulus, Density Distribution, Extrapolation, Homogeneity, Mathematical Models, Modulus Of Elasticity, Pressure Effects
Scientific paper
The lower mantle and outer core are subjected to tests for homogeneity and adiabaticity. An earth model is used which is based on the inversion of body waves and Q-corrected normal-mode data. Homogeneous regions are found at radii between 5125 and 4825 km, 4600 and 3850 km, and 3200 and 2200 km. The lower mantle and outer core are inhomogeneous on the whole and are only homogeneous in the above local regions. Finite-strain and atomistic equations of state are fit to the homogeneous regions. The apparent convergence of the finite-strain relations is examined to judge their applicability to a given region. In some cases the observed pressure derivatives of the elastic moduli are used as additional constraints. The effect of minor deviations from adiabaticity on the extrapolations is also considered. An ensemble of zero-pressure values of the density and seismic velocities are found for these regions. The range of extrapolated values from these several approaches provides a measure of uncertainties involved.
Anderson David L.
Butler Ralph
No associations
LandOfFree
Equation of state fits to the lower mantle and outer core does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Equation of state fits to the lower mantle and outer core, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Equation of state fits to the lower mantle and outer core will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-943051