SH-wave propagation in the whole mantle using high-order finite differences

Details SH-wave propagation in the whole mantle using high-order finite differences SH-wave propagation in the whole mantle using high-order finite differences

Mar 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995georl..22..731i&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 22, no. 6, p. 731-734

Physics

18

Earth Core, Earth Mantle, Finite Difference Theory, Seismology, Sh Waves, Spherical Coordinates, Wave Propagation, Core-Mantle Boundary, Earth Planetary Structure, Seismographs, Waveforms

Scientific paper

Finite-difference approximations to the wave equation in spherical coordinates are used to calculate synthetic seismograms for global Earth models. High-order finite-difference (FD) schemes were employed to obtain accurate waveforms and arrival times. Application to SH-wave propagation in the mantle shows that multiple reflections from the core-mantle shows that multiple reflections from the core-mantle shows that multiple reflections from the core-mantle boundary (CMB), with travel times of about one hour, can be modeled successfully. FD techniques, which are applicable in generally heterogeneous media, can be used to determine realistic global earth structure.

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