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

Alessandro M. Forte; Jerry X. Mitrovica; Robert L. Woodward

doi:10.1029/95GL01065

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

Alessandro M. Forte
, Jerry X. Mitrovica
, Robert L. Woodward

Université Paris Diderot
Department of Physics
University of Toronto
Albuquerque Seismological Lab
U.S.G.S

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

47 Citations (Scopus)

Résumé

We demonstrate that the excess dynamic ellipticity of the core‐mantle‐boundary (CMB) inferred from the period of the Earth's retrograde free core nutation (RFCN) 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.

langue originale	Anglais
Pages (de - à)	1013-1016
Nombre de pages	4
journal	Geophysical Research Letters
Volume	22
Numéro de publication	9
Les DOIs	https://doi.org/10.1029/95GL01065
état	Publié - 1 janv. 1995
Modification externe	Oui

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10.1029/95GL01065

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title = "Seismic‐geodynamic determination of the origin of excess ellipticity of the core‐mantle boundary",

abstract = "We demonstrate that the excess dynamic ellipticity of the core‐mantle‐boundary (CMB) inferred from the period of the Earth's retrograde free core nutation (RFCN) 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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AU - Forte, Alessandro M.

AU - Mitrovica, Jerry X.

AU - Woodward, Robert L.

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Y1 - 1995/1/1

N2 - We demonstrate that the excess dynamic ellipticity of the core‐mantle‐boundary (CMB) inferred from the period of the Earth's retrograde free core nutation (RFCN) 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.

AB - We demonstrate that the excess dynamic ellipticity of the core‐mantle‐boundary (CMB) inferred from the period of the Earth's retrograde free core nutation (RFCN) 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.

UR - https://www.scopus.com/pages/publications/0028848775

U2 - 10.1029/95GL01065

DO - 10.1029/95GL01065

M3 - Article

AN - SCOPUS:0028848775

SN - 0094-8276

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JO - Geophysical Research Letters

JF - Geophysical Research Letters

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ER -

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

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