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Finite-difference elastic wave propagation in 2D heterogeneous transversely isotropic media
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
1995 (English)In: Geophysical Prospecting, ISSN 0016-8025, E-ISSN 1365-2478, Vol. 43, no 6, 843-858 p.Article in journal (Refereed) Published
Abstract [en]

The velocity-stress formulation for propagation of elastic seismic waves through 2D heterogeneous transversely isotropic media of arbitrary orientation is presented. The equations are recast into a finite-difference scheme and solved numerically using fourth-order spatial operators and a second-order temporal operator on a staggered grid. Absorbing, free-surface and symmetry boundary conditions have been implemented. Test cases compare well with other published solutions. Synthetic seismograms are calculated over two idealized models: (i) vertical fractures in granite with a dolerite sill reflector and (ii) a dipping anisotropic shale. Comparisons with the isotropic counterparts show significant differences which may have to be accounted for in seismic processing in the future.

Place, publisher, year, edition, pages
Blackwell Publishing, 1995. Vol. 43, no 6, 843-858 p.
Keyword [en]
SEISMOGRAMS; SIMULATION; EQUATIONS; MIGRATION
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:uu:diva-27974DOI: 10.1111/j.1365-2478.1995.tb00284.xOAI: oai:DiVA.org:uu-27974DiVA: diva2:55870
Available from: 2008-10-17 Created: 2008-10-17 Last updated: 2017-12-07Bibliographically approved

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Juhlin, Christopher

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