Frequency domain acoustic equation high-order modeling based on an average-derivative method
文献类型：期刊论文
| 作者 | Zhang Heng1,2; Liu Hong1; Liu Lu1,2; Jin Wei-Jun1; Shi Xiao-Dong1 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2014-05-01 |
| 卷号 | 57期号:5页码:1599-1611 |
| 关键词 | Rotated coordinate Average-derivative method Perfectly matched layer |
| ISSN号 | 0001-5733 |
| DOI | 10.6038/cjg20140523 |
| 文献子类 | Article |
| 英文摘要 | This paper firstly illustrates the limitation of frequency-domain finite-difference forward modeling algorithm based on the rotation coordinate which can only be applied to the same horizontal and vertical spatial sampling interval. Then we develop a new kind of 25-point scheme based on an average-derivative method. This scheme represents the approximations of the spatial derivatives as the weighted average of 5 grid points in the orthogonal directions and can be applied to different ratio of horizontal and vertical sampling interval. Therefore this scheme can be used as a general fourth-order scheme, so this method possesses excellent applicability. By determining the weighting coefficients of spatial derivative terms and the acceleration terms to minimize numerical dispersion, the number of grid points per wavelength bounded by the error range of 1% is only 2. 78. We apply perfectly matched layer absorbing boundary condition to eliminate the artificial boundary reflection efficiently. The numerical examples prove the validity and precision of the ADM 25-point scheme. |
| WOS关键词 | SCALAR WAVE EXTRAPOLATOR ; FINITE-DIFFERENCE ; FORM INVERSION ; SPACE DOMAIN ; ACCURACY ; SCHEME |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000336701200023 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/85057]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhang Heng |
| 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 | Zhang Heng,Liu Hong,Liu Lu,et al. Frequency domain acoustic equation high-order modeling based on an average-derivative method[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2014,57(5):1599-1611. |
| APA | Zhang Heng,Liu Hong,Liu Lu,Jin Wei-Jun,&Shi Xiao-Dong.(2014).Frequency domain acoustic equation high-order modeling based on an average-derivative method.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,57(5),1599-1611. |
| MLA | Zhang Heng,et al."Frequency domain acoustic equation high-order modeling based on an average-derivative method".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 57.5(2014):1599-1611. |
入库方式： OAI收割
来源：地质与地球物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。