完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | Lin, Chih-Ping | en_US |
dc.contributor.author | Lin, Chun-Hung | en_US |
dc.date.accessioned | 2014-12-08T15:14:00Z | - |
dc.date.available | 2014-12-08T15:14:00Z | - |
dc.date.issued | 2007-06-01 | en_US |
dc.identifier.issn | 0267-7261 | en_US |
dc.identifier.uri | http://dx.doi.org/10.1016/j.soildyn.2006.10.008 | en_US |
dc.identifier.uri | http://hdl.handle.net/11536/10774 | - |
dc.description.abstract | The surface wave (S-wave) method has gained popularity in engineering practice for determining S-wave velocity depth profiles. A growing trend is towards the application of S-wave testing for spatially 2-D S-wave velocity tomography, ignoring the assumption of horizontally layered medium. A fourth-order velocity-stress finite difference method is used to perform numerical simulations of S-wave testing in earth models with lateral variation. Results show that the lateral heterogeneity induces a non-stationary property in the space domain, resulting in false depth-related dispersion or higher modes if conventional approach based on stationary assumption is used for the dispersion analysis. Artifacts maybe introduced in spatially 2-D S-wave velocity imaging if the effect of lateral heterogeneity is not accounted for. As a potential countermeasure, a high-lateral-resolution S-wave method is proposed to reduce the effect of lateral heterogeneity while maintaining the resolution and depth range of dispersion analysis. It consists of a walk-away survey and a phase-seaming procedure when synthesizing seismograms with different nearest source-to-receiver offset, allowing wide-wavelength dispersion analysis within a small spatial range. The proof of concept is given with several numerical examples. They show that the high-resolution S-wave method can greatly alleviate the effect of lateral heterogeneity and increase spatial resolution. (c) 2006 Elsevier Ltd. All rights reserved. | en_US |
dc.language.iso | en_US | en_US |
dc.subject | surface wave | en_US |
dc.subject | multi-channel analysis of surface wave | en_US |
dc.subject | lateral heterogeneity | en_US |
dc.title | Effect of lateral heterogeneity on surface wave testing: Numerical simulations and a countermeasure | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1016/j.soildyn.2006.10.008 | en_US |
dc.identifier.journal | SOIL DYNAMICS AND EARTHQUAKE ENGINEERING | en_US |
dc.citation.volume | 27 | en_US |
dc.citation.issue | 6 | en_US |
dc.citation.spage | 541 | en_US |
dc.citation.epage | 552 | en_US |
dc.contributor.department | 土木工程學系 | zh_TW |
dc.contributor.department | Department of Civil Engineering | en_US |
dc.identifier.wosnumber | WOS:000244832600004 | - |
dc.citation.woscount | 14 | - |
顯示於類別: | 期刊論文 |