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SH‐wave propagation in the whole mantle using high‐order finite differences
Author(s) -
Igel Heiner,
Weber Michael
Publication year - 1995
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/95gl00312
Subject(s) - seismogram , finite difference , mantle (geology) , core–mantle boundary , geophysics , finite difference method , geology , wave equation , wave propagation , physics , computational physics , mathematical analysis , seismology , mathematics , optics
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 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.