Minimum travel time tree algorithm for seismic ray tracing: improvement in efficiency
文献类型：期刊论文
| 作者 | Zhao, AH; Zhang, ZJ; Teng, JW |
| 刊名 | JOURNAL OF GEOPHYSICS AND ENGINEERING
 |
| 出版日期 | 2004-12-01 |
| 卷号 | 1期号:4页码:245-251 |
| 关键词 | ray tracing travel time computation seismic exploration computational seismology |
| ISSN号 | 1742-2132 |
| DOI | 10.1088/1742-2132/1/4/001 |
| 文献子类 | Article |
| 英文摘要 | The computational efficiency of the basic minimum travel time tree (MTTT) algorithm for seismic ray tracing is improved by means of dynamically adjusting the pre-defined propagation area of secondary waves according to the spread of seismic waves. The improvement on the MTTT algorithm is achieved explicitly by limiting the calculation of seismic rays and travel times to a small pre-defined propagation area of secondary waves and to the secondary waves from the points around the straight elongation of the incoming ray. Numerical examples verify that a good approximation of travel times and ray paths can be obtained with the improved algorithm using a small pre-defined propagation area of secondary waves even for complex models. Furthermore, the denser a grid coverage a model has, the greater the improvement in computational efficiency the new algorithm makes. The computational efficiency is more obvious for a 3D model than for a 2D one. |
| WOS关键词 | FINITE-DIFFERENCE CALCULATION |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000228577000001 |
| 出版者 | IOP PUBLISHING LTD |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/79171]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhao, AH |
| 作者单位 | 1.Chinese State Bur Seismol, Inst Geophys, Beijing 100081, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, AH,Zhang, ZJ,Teng, JW. Minimum travel time tree algorithm for seismic ray tracing: improvement in efficiency[J]. JOURNAL OF GEOPHYSICS AND ENGINEERING,2004,1(4):245-251. |
| APA | Zhao, AH,Zhang, ZJ,&Teng, JW.(2004).Minimum travel time tree algorithm for seismic ray tracing: improvement in efficiency.JOURNAL OF GEOPHYSICS AND ENGINEERING,1(4),245-251. |
| MLA | Zhao, AH,et al."Minimum travel time tree algorithm for seismic ray tracing: improvement in efficiency".JOURNAL OF GEOPHYSICS AND ENGINEERING 1.4(2004):245-251. |
入库方式： OAI收割
来源：地质与地球物理研究所
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