Effects of velocity contrast on the quality of crosswell traveltime tomography and an improved method
文献类型：期刊论文
| 作者 | Guo-Jin, C; Hui, C; Yong-Shuan, W; Fei, Z; Zhen-Xing, Y |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2006-05-01 |
| 卷号 | 49期号:3页码:915-922 |
| 关键词 | crosswell first-break traveltime tomography velocity contrast ray coverage grid discretization multi-scale resolution accuracy |
| ISSN号 | 0001-5733 |
| 文献子类 | Article |
| 英文摘要 | The quality of the tomographic result is not good as expected because of the uneven ray coverage caused by increasing velocity contrast of the neighboring geological bodies and the inappropriate grid discretization in crosswell seismic first-break traveltime tomography. The tomographic results of physical and numerical models prove that when the velocity contrast is greater than 30.0%, its tomographic result will be deformed significantly, when between 30.0% and 15.0%, it will be acceptable, and when less than 15.0%, it will be very good. The multi-scale crosswell traveltime tomography is proposed on the above basis. The method is a simultaneous traveltime tomography using various grid discretizations for the same model to obtain velocity reconstructive images of a study area. The tomographic results of numerical and physical models show that this method simultaneously considers the resolution and accuracy of tomography and can significantly improve the quality of crosswell tomography. Even if the velocity contrast is more than 30.0%, multiscale tomographic results are still good. Therefore, this method can be applied to real crosswell seismic data tomography. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000237873000038 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/66276]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Guo-Jin, C |
| 作者单位 | 1.SINOPEC, Inst Geophys Prospecting, Nanjing 210014, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.Nanjing Univ Aeronaut & Astronaut, Nanjing 210016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo-Jin, C,Hui, C,Yong-Shuan, W,et al. Effects of velocity contrast on the quality of crosswell traveltime tomography and an improved method[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2006,49(3):915-922. |
| APA | Guo-Jin, C,Hui, C,Yong-Shuan, W,Fei, Z,&Zhen-Xing, Y.(2006).Effects of velocity contrast on the quality of crosswell traveltime tomography and an improved method.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,49(3),915-922. |
| MLA | Guo-Jin, C,et al."Effects of velocity contrast on the quality of crosswell traveltime tomography and an improved method".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 49.3(2006):915-922. |
入库方式： OAI收割
来源：地质与地球物理研究所
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