Mantle lateral variations and elastogravitational deformations - I. Numerical modelling

Details Mantle lateral variations and elastogravitational deformations - I. Numerical modelling Mantle lateral variations and elastogravitational deformations - I. Numerical modelling

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006geoji.167.1060m&link_type=abstract

Geophysical Journal International, Volume 167, Issue 3, pp. 1060-1076.

Astronomy and Astrophysics

Astronomy

8

Elastogravitational Theory, Finite Element Methods, Lateral Heterogeneity, Loadings, Tides

Scientific paper

The Earth response (deformation and gravity) to tides or to surface loads is traditionally computed assuming radial symmetry in stratified earth models, at the hydrostatic equilibrium. The present study aims at providing a new earth elastogravitational deformation model which accounts for the whole complexity of a more realistic earth.
The model is based on a dynamically consistent equilibrium state which includes lateral variations in density and elastic parameters, and interface topographies. The deviation from the hydrostatic equilibrium has been taken into account as a first-order perturbation. We use a finite element method (spectral element method) and solve numerically the gravitoelasticity equations.
As a validation application, we investigate the deformation of the Earth to surface loads. We first evaluate the classical loading Love numbers with a relative precision of about 0.3 per cent for PREM earth model. Then we assume an ellipsoidal homogeneous incompressible earth with hydrostatic pre-stresses. We investigate the impact of ellipticity on loading Love numbers analytically and numerically. We validate and discuss our numerical model.

Affiliated with

Also associated with

No associations

Rating

Mantle lateral variations and elastogravitational deformations - I. Numerical modelling 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 Mantle lateral variations and elastogravitational deformations - I. Numerical modelling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mantle lateral variations and elastogravitational deformations - I. Numerical modelling will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1544144