HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Figures Only Full Text Full Text (PDF) Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (7) Citing Articles via Google Scholar Google Scholar Articles by Yang, D. Articles by Teng, J. Search for Related Content GeoRef GeoRef Citation

n-Times Absorbing Boundary Conditions for Compact Finite-Difference Modeling of Acoustic and Elastic Wave Propagation in the 2D TI Medium

Department of Mathematical Sciences
Tsinghua University
Beijing 100084, China
dhyang{at}math.tshinghua.edu.cn
(D.Y., S.W.)
Institute of Geophysics
Chinese Academy of Sciences
Beijing 100101, China
(Z.Z., J.T.)

Manuscript received 6 November 2002.

This article presents decoupling n-times absorbing boundary conditions designed to model acoustic and elastic wave propagation in a 2D transversely isotropic (TI) medium. More general n-times boundary conditions with absorbing parameters are also obtained by cascading first-order differential operators with parameters. These boundary conditions are approximated with simple finite-difference schemes for numerical simulations. The numerical results show that the absorbing for the reflection waves strengthens with increasing the absorbing times n and the discretization boundary formulas are stable. Specially, the n-times absorbing boundary condition with absorbing parameters is better than that without the absorbing parameters under the case of same absorbing order. Elastic wave fields and three-component synthetic seismograms, generated by using the compact finite-difference and the decoupling n-times absorbing boundary, also illustrate that the n-times absorbing boundary condition can eliminate effectively the spurious numerical reflections in the acoustic and elastic wave modeling for the TI medium case.

This article has been cited by other articles:

				D. Yang, J. Peng, M. Lu, and T. Terlaky Optimal Nearly Analytic Discrete Approximation to the Scalar Wave Equation Bulletin of the Seismological Society of America, June 1, 2006; 96(3): 1114 - 1130. [Abstract] [Full Text] [PDF]

				An Optimal Nearly Analytic Discrete Method for 2D Acoustic and Elastic Wave Equations Bulletin of the Seismological Society of America, October 1, 2004; 94(5): 1982 - 1992.