Fast and accurate calculation of seismic wave travel time in 3D TTI media
文献类型：期刊论文
| 作者 | Mao Yuan-Tong1,2,3; Zhao Ai-Hua1 |
| 刊名 | APPLIED GEOPHYSICS
 |
| 出版日期 | 2021-12-01 |
| 卷号 | 18期号:4页码:545-556 |
| 关键词 | TTI media ray tracing minimum traveltime tree algorithm minimum heap sorting parallel computation |
| ISSN号 | 1672-7975 |
| DOI | 10.1007/s11770-021-0917-z |
| 英文摘要 | The Tilted tilted transversely isotropic (TTI) media, a kind of anisotropic medium, widely exists within the earth. For faster calculation of travel times in the TTI anisotropic media, we modified a minimum traveltime tree algorithm with high efficiency by dynamical modification of the secondary wave propagation region during the spread of seismic waves. To manage the wavefront points in the modified version, we used a novel minimum heap sorting technique to reduce the time spent on selecting secondary waves points. In this study, seismic group velocities were obtained from analytical solutions in terms of phase angle, and the corresponding phase angles were determined by binary search rather than approximate equations for weakly anisotropic media. For the most time-consuming part of the secondary wave traveltime calculation, the parallel computation was initially performed using multiple cores and threads. Numerical examples showed that the improved method can calculate seismic travel times and ray paths faster and accurately in a 3D TTI medium. For four cores and eight threads, the computing speed increased by six times when compared to the conventional method. |
| WOS关键词 | VELOCITY ANALYSIS ; EIKONAL EQUATION ; ISOTROPIC MEDIA ; ANISOTROPY ; ALGORITHM |
| 资助项目 | National Key R&D Program of China[2020YFA0710600] ; National Science Foundation of China[41374098] ; Special Fund of the Institute of Geophysics, China Earthquake Administration[DQJB19B40] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000789846800010 |
| 出版者 | SPRINGER |
| 资助机构 | National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; Special Fund of the Institute of Geophysics, China Earthquake Administration ; Special Fund of the Institute of Geophysics, China Earthquake Administration ; Special Fund of the Institute of Geophysics, China Earthquake Administration ; Special Fund of the Institute of Geophysics, China Earthquake Administration ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; Special Fund of the Institute of Geophysics, China Earthquake Administration ; Special Fund of the Institute of Geophysics, China Earthquake Administration ; Special Fund of the Institute of Geophysics, China Earthquake Administration ; Special Fund of the Institute of Geophysics, China Earthquake Administration ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; Special Fund of the Institute of Geophysics, China Earthquake Administration ; Special Fund of the Institute of Geophysics, China Earthquake Administration ; Special Fund of the Institute of Geophysics, China Earthquake Administration ; Special Fund of the Institute of Geophysics, China Earthquake Administration ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; Special Fund of the Institute of Geophysics, China Earthquake Administration ; Special Fund of the Institute of Geophysics, China Earthquake Administration ; Special Fund of the Institute of Geophysics, China Earthquake Administration ; Special Fund of the Institute of Geophysics, China Earthquake Administration |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/105164]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhao Ai-Hua |
| 作者单位 | 1.China Earthquake Adm, Inst Geophys, Beijing 100081, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Mao Yuan-Tong,Zhao Ai-Hua. Fast and accurate calculation of seismic wave travel time in 3D TTI media[J]. APPLIED GEOPHYSICS,2021,18(4):545-556. |
| APA | Mao Yuan-Tong,&Zhao Ai-Hua.(2021).Fast and accurate calculation of seismic wave travel time in 3D TTI media.APPLIED GEOPHYSICS,18(4),545-556. |
| MLA | Mao Yuan-Tong,et al."Fast and accurate calculation of seismic wave travel time in 3D TTI media".APPLIED GEOPHYSICS 18.4(2021):545-556. |
入库方式： OAI收割
来源：地质与地球物理研究所
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