Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/6487
Title: Absorbing boundary conditions in a fourth-order accurate SH-wave staggered grid finite difference algorithm
Authors: Kumar S.
Narayan J.P.
Published in: Acta Geophysica
Abstract: This article presents the implementation of two well known absorbing boundary conditions in a fourth-order accurate staggered grid SH -wave finite difference (FD) algorithm with variable grid size, in a very simplified manner. Based on simulated results, it was confirmed that the Clayton and Engquist absorbing boundary condition causes edge-reflections in case of larger angle of incidence of body waves on the model edges. The results of various numerical experiments revealed that the Israeli and Orszag sponge boundary condition is efficient enough to avoid edge-reflections for any angle of incidence of the body. We recommend the use of both the Clayton and Engquist and Israeli and Orszag absorbing boundary conditions simultaneously to avoid any edge-reflections. © Versita Warsaw and Springer-Verlag Berlin Heidelberg 2008.
Citation: Acta Geophysica (2008), 56(4): 1090-1108
URI: https://doi.org/10.2478/s11600-008-0043-9
http://repository.iitr.ac.in/handle/123456789/6487
Issue Date: 2008
Keywords: Boundary condition
Edge-reflections
Finite difference algorithm
Fourth-order spatial accuracy
SH-wave
ISSN: 18956572
Author Scopus IDs: 57213855980
56240931000
Author Affiliations: Kumar, S., Department of Earthquake Engineering, Indian Institute of Technology, Roorkee, India
Narayan, J.P., Department of Earthquake Engineering, Indian Institute of Technology, Roorkee, India
Funding Details: A c k n o w l e d g e m e n t . The second author is thankful to the Department of Science and Technology (DST), New Delhi, and Earthquake Risk Evaluation Centre (EREC), IMD, New Delhi, for the financial assistance through Grants Number DST-034-EQD and ERC-244-EQD, respectively. The authors are also grateful to the unknown Reviewers for their valuable comments and suggestions.
Corresponding Author: Kumar, S.; Department of Earthquake Engineering, Indian Institute of Technology, Roorkee, India
Appears in Collections:Journal Publications [EQ]

Files in This Item:
There are no files associated with this item.
Show full item record


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.