Comparison of stress-associated coda attenuation and intrinsic attenuation from ultrasonic measurements
文献类型：期刊论文
| 作者 | Guo, Meng-Qiu1; Fu, Li-Yun1; Ba, Jing2 |
| 刊名 | GEOPHYSICAL JOURNAL INTERNATIONAL
 |
| 出版日期 | 2009-07-01 |
| 卷号 | 178期号:1页码:447-456 |
| 关键词 | Fourier analysis Body waves Seismic attenuation Wave scattering and diffraction Wave propagation |
| ISSN号 | 0956-540X |
| DOI | 10.1111/j.1365-246X.2009.04159.x |
| 文献子类 | Article |
| 英文摘要 | Seismic wave attenuation has been proved to be an indicator of stress changes in rocks. Seismic coda, as a superposition of incoherent scattered waves, is known to reflect small-scale random heterogeneities in the Earth medium. It contains information on stress changes of the Earth's interior, as a result of changes in the physical state of materials. In this paper, we measure ultrasonic properties of rocks under different effective stresses to study the effect of pore-pressure induced stress changes on coda attenuation as a combination of intrinsic attenuation and scattering attenuation. We investigate the stress-associated coda attenuation quality factors Q(PC) and Q(SC) as a function of frequencies and characterize its scale dependence on stress variations in rocks by comparing with the intrinsic attenuation quality factors Q(P) and Q(S), calculated from ultrasonic measurements. Comparisons of the P- and S-coda attenuations versus frequencies under different effective stresses demonstrate that the scattering of the S-coda is much stronger because of its shorter wavelength. The intrinsic and coda attenuations versus stress variations present quite different non-linear features, where Q(P), Q(S), Q(PC) and Q(SC) increase with increasing effective stress, but Q(PC) and Q(SC) show a greater sensitivity to pore pressure than Q(P) and Q(S). |
| WOS关键词 | SEISMIC CODA ; ANELASTIC ATTENUATION ; FREQUENCY-DEPENDENCE ; ELASTIC PROPERTIES ; SATURATED ROCKS ; PORE PRESSURE ; UNITED-STATES ; RANDOM-MEDIA ; LONG-VALLEY ; SCATTERING |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000266979600026 |
| 出版者 | WILEY-BLACKWELL PUBLISHING, INC |
| 资助机构 | National Nature Science Foundation of China(40674030) ; National Nature Science Foundation of China(40674030) ; National Basic Research Program of China(2007CB209505) ; National Basic Research Program of China(2007CB209505) ; National Nature Science Foundation of China(40674030) ; National Nature Science Foundation of China(40674030) ; National Basic Research Program of China(2007CB209505) ; National Basic Research Program of China(2007CB209505) ; National Nature Science Foundation of China(40674030) ; National Nature Science Foundation of China(40674030) ; National Basic Research Program of China(2007CB209505) ; National Basic Research Program of China(2007CB209505) ; National Nature Science Foundation of China(40674030) ; National Nature Science Foundation of China(40674030) ; National Basic Research Program of China(2007CB209505) ; National Basic Research Program of China(2007CB209505) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/70680]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Guo, Meng-Qiu |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earths Deep Interior, Beijing, Peoples R China 2.CNPC, Dept Geophys, Res Inst Petr Explorat & Dev, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Meng-Qiu,Fu, Li-Yun,Ba, Jing. Comparison of stress-associated coda attenuation and intrinsic attenuation from ultrasonic measurements[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2009,178(1):447-456. |
| APA | Guo, Meng-Qiu,Fu, Li-Yun,&Ba, Jing.(2009).Comparison of stress-associated coda attenuation and intrinsic attenuation from ultrasonic measurements.GEOPHYSICAL JOURNAL INTERNATIONAL,178(1),447-456. |
| MLA | Guo, Meng-Qiu,et al."Comparison of stress-associated coda attenuation and intrinsic attenuation from ultrasonic measurements".GEOPHYSICAL JOURNAL INTERNATIONAL 178.1(2009):447-456. |
入库方式： OAI收割
来源：地质与地球物理研究所
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