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Elastic wave propagation using fully vectorized high order finite-difference algorithms

Vafeidis Antonios, Flavian Abramovici , Kanasewich, Ernest R

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URIhttp://purl.tuc.gr/dl/dias/11B6C8FC-FAAB-4687-B802-D0430F6413A5-
Identifierhttp://geophysics.geoscienceworld.org/content/57/2/218.abstract-
Identifierhttps://doi.org/DOI: 10.1190/1.1443235-
Languageen-
Extent15 pagesen
TitleElastic wave propagation using fully vectorized high order finite-difference algorithmsen
CreatorVafeidis Antoniosen
CreatorΒαφειδης Αντωνιοςel
Creator Flavian Abramovici en
CreatorKanasewich, Ernest Ren
PublisherSociety of Exploration Geophysicistsen
Content SummaryTwo 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.en
Type of ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2015-10-28-
Date of Publication1992-
SubjectElastic wavesen
Bibliographic CitationA. Vafidis, F. Abramovici and E. R. Kanasewich, "Elastic wave propagation using fully vectorized high order finite-difference algorithms", Geoph., vol. 57, no. 2, pp. 218-232, Feb. 1992. doi: 10.1190/1.1443235en

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