Elastic wave and excitation mechanism of surface waves in multilayered media
文献类型：期刊论文
| 作者 | Xiong, W; Yu, M; Zhang, BX; Lan, CQ |
| 刊名 | JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
 |
| 出版日期 | 1996-12-01 |
| 卷号 | 100期号:6页码:3527-3538 |
| ISSN号 | 0001-4966 |
| 文献子类 | Article |
| 英文摘要 | The elastic wave field and the excitation mechanism of the surface waves in multilayered elastic solid media are studied in this paper. On the basis of Abo-zena [Geophys. J. R. Astron. Sec. 58, 91-105 (1979)] and Menke [Geophys. J. R. Astron. Sec. 59, 315-323 (1979)], the elastic wave held is further investigated in the B, P, C coordinate system. The so-called new type of propagator matrix introduced by Menke to avoid loss of the precision problem is improved. It presented an important result and some new properties. The dispersion characteristics and excitation mechanisms of the surface waves (Rayleigh and Love waves) are also investigated via numerical simulation. The excitation intensities of the surface waves strongly depend on the frequency range of the source. The source frequency should be controlled in a proper range to effectively excite the surface waves. Two quantities, beta(1) (the ratio of B to P components of displacement) and beta(2) (the ratio of B to P components of stress), are defined for the Rayleigh wave. It is found that beta(1) and beta(2) are sensitive to the material property of the medium and the layered geometry, and they are two important physical quantities for exploring the structures of the interfaces and the velocity distributions of layers under the free surface. The relative error in estimating the thickness of each medium by beta(1) and beta(2) is less than 10%. The effects of the thickness of each layer of media and other factors on the dispersion characteristics of Rayleigh and Love waves and the values of beta(1) and beta(2) are also analyzed. (C) 1996 Acoustical Society of America. |
| WOS关键词 | FILLED POROUS-MEDIA ; RAYLEIGH-WAVES ; LAYERED MEDIA ; GUIDED-WAVES ; HALF-SPACE ; COMPUTATION ; DISPERSION |
| WOS研究方向 | Acoustics ; Audiology & Speech-Language Pathology |
| 语种 | 英语 |
| WOS记录号 | WOS:A1996VX67400005 |
| 出版者 | AMER INST PHYSICS |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/12635]  |
| 专题 | 中国科学院武汉物理与数学研究所 |
| 作者单位 | CHINESE ACAD SCI,WUHAN INST PHYS,WUHAN 430071,PEOPLES R CHINA |
| 推荐引用方式 GB/T 7714 | Xiong, W,Yu, M,Zhang, BX,et al. Elastic wave and excitation mechanism of surface waves in multilayered media[J]. JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA,1996,100(6):3527-3538. |
| APA | Xiong, W,Yu, M,Zhang, BX,&Lan, CQ.(1996).Elastic wave and excitation mechanism of surface waves in multilayered media.JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA,100(6),3527-3538. |
| MLA | Xiong, W,et al."Elastic wave and excitation mechanism of surface waves in multilayered media".JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 100.6(1996):3527-3538. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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