Effects of source and cavity depths on wave fields in layered media
文献类型：期刊论文
| 作者 | Chai, Hua-You1,3; Goh, Siang-Huat2; Phoon, Kok-Kwang2; Wei, Chang-Fu3; Zhang, Dian-Ji1 |
| 刊名 | JOURNAL OF APPLIED GEOPHYSICS
 |
| 出版日期 | 2014 |
| 卷号 | 107页码:163-170 |
| 关键词 | Layered half space Buried source Rayleigh waves Leaky Lamb waves Thin layer method Scattered waves |
| ISSN号 | 0926-9851 |
| DOI | 10.1016/j.jappgeo.2014.05.017 |
| 英文摘要 | The multiple modes of Rayleigh waves (R-waves) or leaky Lamb waves (L-waves) may be present in the activated and/or the back-scattered wave fields. The presence of these waves in the wave fields is related to the source and the cavity depths. Two types of layered media are used to investigate the influences of the source and the cavity depths. One is the layered half space where the half space is stiffer than all the overlying layers; the other is the pavement system where there is significant velocity contrast between layers and the shear velocity of layers decreases with the layer depth. The discrete displacement expressions developed for spherical point sources are used to study the effects of the source depth on the excitability and the propagation behavior of R-waves or leaky L-waves. In layered half spaces, the multiple modes of R-waves can be activated by the sources within a certain depth. The effective phase velocity of these activated modes is derived. In pavement systems, the leaky L-waves can be activated by the sources at any depth. The discrete displacement expressions of the scattered waves are derived and used to evaluate the effects of the cavity depth on the presence of R-waves or the leaky L-waves in the back-scattered wave field. (C) 2014 Elsevier B.V.. All rights reserved. |
| WOS研究方向 | Geology ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000338978000018 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3612]  |
| 专题 | 岩土力学所知识全产出_期刊论文 |
| 作者单位 | 1.Sch Res & Civil Engn, Wuhan Inst Technol ; 2.Natl Univ Singapore, Dept Civil & Environm Engn ; 3.Chinese Acad Sci, Inst Rock & Soil Mech, Key Lab Geomech & Geotech Engn |
| 推荐引用方式 GB/T 7714 | Chai, Hua-You,Goh, Siang-Huat,Phoon, Kok-Kwang,et al. Effects of source and cavity depths on wave fields in layered media[J]. JOURNAL OF APPLIED GEOPHYSICS,2014,107:163-170. |
| APA | Chai, Hua-You,Goh, Siang-Huat,Phoon, Kok-Kwang,Wei, Chang-Fu,&Zhang, Dian-Ji.(2014).Effects of source and cavity depths on wave fields in layered media.JOURNAL OF APPLIED GEOPHYSICS,107,163-170. |
| MLA | Chai, Hua-You,et al."Effects of source and cavity depths on wave fields in layered media".JOURNAL OF APPLIED GEOPHYSICS 107(2014):163-170. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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