Aspherical earth structure from fundamental spheroidal-mode data

Details Aspherical earth structure from fundamental spheroidal-mode data Aspherical earth structure from fundamental spheroidal-mode data

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982natur.298..609m&link_type=abstract

Nature, vol. 298, Aug. 12, 1982, p. 609-613.

Mathematics

184

Earth Mantle, Geodesy, Geoids, Spherical Harmonics, Free Vibration, Heterogeneity, Least Squares Method, Mathematical Models, Temperature Gradients

Scientific paper

Free-oscillation data reveal heterogeneity in the earth's mantle whose geographical pattern is dominated by spherical harmonics of angular degree two and correlates well with the hydrostatically referenced geoid. The heterogeneity can be modelled as localized in the transition zone (420-670 km depth) and may be related to a large-scale component of mantle convection.

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