Seismic-geodynamic determination of the origin of excess ellipticity of the core-mantle boundary

Details Seismic-geodynamic determination of the origin of excess ellipticity of the core-mantle boundary Seismic-geodynamic determination of the origin of excess ellipticity of the core-mantle boundary

May 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995georl..22.1013f&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 22, no. 9, p. 1013-1016

Physics

28

Core-Mantle Boundary, Ellipticity, Geodynamics, Seismology, Topography, Convective Flow, Earth Rotation, Nutation, Three Dimensional Flow, Viscous Flow

Scientific paper

The excess dynamic ellipticity of the core-mantle boundary (CMB) inferred from the period of the Earth's retrograde free core nutation may be explained in terms of viscous stresses generated by mantle convective flow. The 3D elastic structure and radial viscosity profile which define the model used in the viscous flow calculations are constrained to simultaneously reconcile a large set of seismic and geodynamic data.

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