Effects of source and cavity depths on wave fields in homogeneous half spaces
文献类型：期刊论文
| 作者 | Chai, Hua-You1,2; Goh, Siang-Huat2; Phoon, Kok-Kwang2; Wei, Chang-Fu1 |
| 刊名 | JOURNAL OF APPLIED GEOPHYSICS
 |
| 出版日期 | 2013 |
| 卷号 | 93页码:52-59 |
| 关键词 | Buried source Rayleigh waves Thin layer method Scattered waves Green's functions |
| ISSN号 | 0926-9851 |
| DOI | 10.1016/j.jappgeo.2013.03.009 |
| 英文摘要 | In homogeneous half spaces excited by small buried, spherically symmetric P-wave sources, Rayleigh waves (R-waves) could be generated. The effects of the source depth on the induced wave pattern and propagation behavior of R-waves are analyzed using the thin layer method. When a cavity is present in a homogeneous half space, R-waves could be formed in the scattered wave field. It is found that the energy of R-waves in the incident (direct) surface wave-field is related to the ratio of the source depth to the wavelength of R-waves; R-waves have relatively strong energy when the ratio is less than 1; the buried source induced R-waves approximately travel at the velocity of the planar R-waves in the range of the offset beyond about one wavelength; the energy of R-waves in the back-scattered surface wave-field depends on the ratio of the depth of cavity to the wavelength of R-waves; and for the case of the cavity presented at depths less than one wavelength, R-waves can be clearly observed in the back-scattered wave field. The results are helpful for selecting the source depth and the frequency component in seismic surveys and interpreting both the incident wave and the scattered wave patterns. (C) 2013 Elsevier B.V. All rights reserved. |
| WOS研究方向 | Geology ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000320424600006 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3465]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Natl Univ Singapore, Dept Civil & Environm 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 homogeneous half spaces[J]. JOURNAL OF APPLIED GEOPHYSICS,2013,93:52-59. |
| APA | Chai, Hua-You,Goh, Siang-Huat,Phoon, Kok-Kwang,&Wei, Chang-Fu.(2013).Effects of source and cavity depths on wave fields in homogeneous half spaces.JOURNAL OF APPLIED GEOPHYSICS,93,52-59. |
| MLA | Chai, Hua-You,et al."Effects of source and cavity depths on wave fields in homogeneous half spaces".JOURNAL OF APPLIED GEOPHYSICS 93(2013):52-59. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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