Bulletin of the Seismological Society of America
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Bulletin of the Seismological Society of America; October 2009; v. 99; no. 5; p. 3086-3093; DOI: 10.1785/0120090013
© 2009 Seismological Society of America
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Short Note

New Finite Difference Formulations for Interfaces in Layered Media

Richard Stacey

Department of Electrical Electronic and Information Engineering, City University, Northampton Square, London EC1V 0HB

New finite difference formulations are developed that model the interface between two bonded elastic solids in two dimensions. The new methods achieve the same order of accuracy as that obtained for the solid body nodes. The stability of the formulations is demonstrated. Their greater accuracy compared with earlier formulations is shown in a test using known exact solutions.






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