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3D Fourth-Order Staggered-Grid Finite-Difference Schemes: Stability and Grid Dispersion

โœ Scribed by Moczo, P.


Book ID
121344169
Publisher
Seismological Society of America
Year
2000
Tongue
English
Weight
238 KB
Volume
90
Category
Article
ISSN
0037-1106

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We construct local fourth-order finite difference approximations of first and second derivatives, on nonuniform grids, in one dimension. The approximations are required to satisfy symmetry relationships that come from the analogous higher-dimensional fundamental operators: the divergence, the gradie