Free-surface boundary condition in finite-difference elastic wave modeling SCIE SCOPUS
DC Field | Value | Language |
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dc.contributor.author | Min, DJ | - |
dc.contributor.author | Shin, C | - |
dc.contributor.author | Yoo, HS | - |
dc.date.accessioned | 2020-04-20T15:25:32Z | - |
dc.date.available | 2020-04-20T15:25:32Z | - |
dc.date.created | 2020-01-28 | - |
dc.date.issued | 2004-02 | - |
dc.identifier.issn | 0037-1106 | - |
dc.identifier.uri | https://sciwatch.kiost.ac.kr/handle/2020.kiost/5304 | - |
dc.description.abstract | We design a new frequency-domain, finite-difference approach, based on a displacement formulation, which correctly describes the stress-free conditions at a free surface. In the conventional, displacement-based finite-difference method, we assign both displacements and material properties such as density and Lame constants to nodal points (a node-based grid set), whereas in our new finite-difference method, displacements are still defined at nodal points but material properties within cells (a cell-based grid set). In our new finite-difference technique using the cell-based grid set, stress-free conditions at the free surface are described by the changes in the material properties without any additional stress-free boundary condition. By conducting accuracy tests, we confirmed that the new second-order finite differences formulated in the cell-based grid set generate numerical solutions compatible with analytic solutions within the range of errors determined by dispersion analysis; the new, cell-based, weighted-averaging finite-difference method also yields better solutions than the old, node-based, weighted-averaging finite-difference method. The cell-based finite-difference method does not violate the reciprocity. | - |
dc.description.uri | 1 | - |
dc.language | English | - |
dc.publisher | SEISMOLOGICAL SOC AMER | - |
dc.subject | FREQUENCY-DOMAIN | - |
dc.subject | SYNTHETIC SEISMOGRAMS | - |
dc.subject | HETEROGENEOUS MEDIA | - |
dc.subject | TOPOGRAPHY | - |
dc.subject | PROPAGATION | - |
dc.subject | SCHEME | - |
dc.subject | COMPUTATION | - |
dc.subject | SIMULATION | - |
dc.subject | OPERATORS | - |
dc.title | Free-surface boundary condition in finite-difference elastic wave modeling | - |
dc.type | Article | - |
dc.citation.endPage | 250 | - |
dc.citation.startPage | 237 | - |
dc.citation.title | BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA | - |
dc.citation.volume | 94 | - |
dc.citation.number | 1 | - |
dc.contributor.alternativeName | 민동주 | - |
dc.contributor.alternativeName | 유해수 | - |
dc.identifier.bibliographicCitation | BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, v.94, no.1, pp.237 - 250 | - |
dc.identifier.doi | 10.1785/0120020116 | - |
dc.identifier.scopusid | 2-s2.0-1842842374 | - |
dc.identifier.wosid | 000188929700018 | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | FREQUENCY-DOMAIN | - |
dc.subject.keywordPlus | SYNTHETIC SEISMOGRAMS | - |
dc.subject.keywordPlus | HETEROGENEOUS MEDIA | - |
dc.subject.keywordPlus | TOPOGRAPHY | - |
dc.subject.keywordPlus | PROPAGATION | - |
dc.subject.keywordPlus | SCHEME | - |
dc.subject.keywordPlus | COMPUTATION | - |
dc.subject.keywordPlus | SIMULATION | - |
dc.subject.keywordPlus | OPERATORS | - |
dc.relation.journalWebOfScienceCategory | Geochemistry & Geophysics | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Geochemistry & Geophysics | - |