Optimal 15-point finite difference forward modeling in frequency-space domain
文献类型：期刊论文
| 作者 | Liu Lu1,2; Liu Hong1; Liu Hong-Wei1 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2013-02-01 |
| 卷号 | 56期号:2页码:644-652 |
| 关键词 | 15-point difference scheme Compressed storage Perfectly matched layer Weighted-averaging difference operator |
| ISSN号 | 0001-5733 |
| DOI | 10.6038/cjg20130228 |
| 文献子类 | Article |
| 英文摘要 | Forward modeling is the fundamental factor of waveform inversion in frequency-space domain. Fast and effective difference scheme can guarantee the precision and efficiency of the results of waveform inversion. In this paper, aiming at suppressing dispersion effectively with a smaller impedance matrix bandwidth in frequency-space domain, we make use of three techniques: weighted averaging operator, averaging the mass acceleration term and optimizing the coefficient, then propose an optimal 15-point difference scheme; And we use compressed storage method to store the huge impedance matrix so that significantly decrease the memory consumption. In order to suppress the reflection from the boundary, we apply perfectly matched layer boundary condition. Finally, through the comparison between our difference scheme and the previous methods, it is proved that our method can effectively suppress dispersion without adding too much calculation amount. |
| WOS关键词 | SCALAR WAVE EXTRAPOLATOR ; EQUATIONS |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000315762400028 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/87928]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Liu Lu |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu Lu,Liu Hong,Liu Hong-Wei. Optimal 15-point finite difference forward modeling in frequency-space domain[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2013,56(2):644-652. |
| APA | Liu Lu,Liu Hong,&Liu Hong-Wei.(2013).Optimal 15-point finite difference forward modeling in frequency-space domain.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,56(2),644-652. |
| MLA | Liu Lu,et al."Optimal 15-point finite difference forward modeling in frequency-space domain".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 56.2(2013):644-652. |
入库方式： OAI收割
来源：地质与地球物理研究所
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