Gravitational viscoelastic relaxation of eccentrically nested spheres

Details Gravitational viscoelastic relaxation of eccentrically nested spheres Gravitational viscoelastic relaxation of eccentrically nested spheres

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999geoji.138...45m&link_type=abstract

Geophysical Journal International, Volume 138, Issue 1, pp. 45-66.

Astronomy and Astrophysics

Astronomy

7

Normal Modes, Spherical Harmonics, Viscoelasticity, Viscosity

Scientific paper

We present a semi-analytical solution to the 2-D forward modelling of viscoelastic relaxation in a heterogeneous model consisting of eccentrically nested spheres. Several numerical methods for 2-D and 3-D viscoelastic relaxation modelling have been applied recently, including finite-element and spectral-finite-difference schemes. The present semi-analytical approach provides a model response against which more general numerical algorithms can be validated. The eccentrically nested sphere solution has been tested by comparing it with the analytical solutions for viscoelastic relaxation in a homogeneous sphere and in two concentrically nested spheres, and good agreement was obtained.

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