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- W1978290416 abstract "Two finite‐difference schemes for solving the elastic wave equation in heterogeneous two‐dimensional media are implemented on a vector computer. A modified Lax‐Wendroff scheme that is second‐order accurate both in time and space and is a version of the MacCormack scheme that is second‐order accurate in time and fourth‐order in space. The algorithms are based on the matrix times vector by diagonals technique that is fully vectorized and is described using a novel notation for vector supercomputer operations. The technique described can be implemented on a vector processor of modest dimensions and increase the applicability of finite differences. The two difference operators are compared and the programs are tested for a simple case of standing sinusoidal waves for which the exact solution is known and also for a two‐layer model with a line source. A comparison of the results for an actual well‐to‐well experiment verifies the usefulness of the two‐dimensional approach in modeling the results." @default.
- W1978290416 created "2016-06-24" @default.
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- W1978290416 date "1992-02-01" @default.
- W1978290416 modified "2023-10-14" @default.
- W1978290416 title "Elastic wave propagation using fully vectorized high order finite‐difference algorithms" @default.
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- W1978290416 doi "https://doi.org/10.1190/1.1443235" @default.
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