Simple and accurate operators based on taylor expansion for 2D elastic seismogram calculation under geological discontinuities with regular cartesian grids

N. Fuji, Oleg Ovcharenko, R. Martin, C. Cuvilliez

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

We propose a set of local operators to deal with internal discontinuities that do not coincide with collocated Cartesian grids in 2D transversely isotropic media. We use globally optimally accurate operators in order to obtain high accuracy. We derive modified operators by extrapolating wavefields from nearby grid points to the discontinuous point, introducing boundary conditions; we then distribute those conditions to the nearby grid points. Numerical examples suggest that the operators improve the coherency of the wavefront. We would like to optimise the local operators to control all the error propagation during the modelling.
Original languageEnglish (US)
Title of host publication78th EAGE Conference and Exhibition 2016 - Workshops
PublisherEAGE Publications BV
ISBN (Print)9789462821866
DOIs
StatePublished - Mar 13 2017

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