Anisotropic models of the upper mantle

Details Anisotropic models of the upper mantle Anisotropic models of the upper mantle

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984pepi...35..227r&link_type=abstract

Physics of the Earth and Planetary Interiors (ISSN 0031-9201), vol. 35, Nov. 1984, p. 227-263. Previously announced in STAR as N

Physics

67

Group Velocity, Lithosphere, Love Waves, Oceans, Rayleigh Waves, Anelasticity, Anisotropy, Data Acquisition, Mathematical Models, Phase Transformations, Tables (Data)

Scientific paper

Long period Rayleigh wave and Love wave dispersion data, particularly for oceanic areas, were not simultaneously satisfied by an isotropic structure. Available phase and group velocity data are inverted by a procedure which includes the effects of transverse anisotropy, an elastic dispersion, sphericity, and gravity. The resulting models, for the average earth, average ocean and oceanic regions divided according to the age of the ocean floor, are quite different from previous results which ignore the above effects. The models show a low velocity zone with age dependent anisotropy and velocities higher than derived in previous surface wave studies. The correspondence between the anisotropy variation with age and a physical model based on flow aligned olivine is suggested.

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