The effect of small-scale structure on normal mode frequencies and global inversions

Details The effect of small-scale structure on normal mode frequencies and global inversions The effect of small-scale structure on normal mode frequencies and global inversions

Jan 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....96..501s&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 96, Jan. 10, 1991, p. 501-515.

Physics

24

Bridges (Landforms), Earth Mantle, Earth Planetary Structure, Subduction (Geology), Tectonics, Earth Core, Planetary Waves, Seismology

Scientific paper

A model of all the subduction zones and spreading ridges of the earth's upper mantle is used for the purpose of computing normal-mode frequency shifts for an earth model that contains significant small-scale structure. The model is detailed, and a short outline of the employed scattering theory is given. The normal-mode frequency shifts are shown, and inversions for a global earth model using the synthetic normal-mode frequency shifts are presented. The earth model in this inversion is presented as a truncated series of spherical harmonics, and a comparison is made with the true projection of structure on the same low-order spherical harmonics.

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