Optimal finite-difference schemes for elastic wave based on improved cosine-combined window function
文献类型：期刊论文
| 作者 | Li, Wen-Da2; Meng, Xiao-Hong1; Hong, Liu2; Jian, Wang1; Sheng, Gui2; Xiu, Chun-Xiao1; Wang, Zhi-Yang2 |
| 刊名 | EXPLORATION GEOPHYSICS
 |
| 出版日期 | 2020-08-05 |
| 页码 | 14 |
| 关键词 | Seismic exploration 2D modelling optimisation finite difference wave equation |
| ISSN号 | 0812-3985 |
| DOI | 10.1080/08123985.2020.1801344 |
| 英文摘要 | The finite difference method is widely used in seismic wave numerical simulation, reverse time migration and full waveform inversion. However, the numerical dispersion problem seriously affects the results of seismic imaging and inversion. Based on this, we introduced cosine-combined window function (CCWF) used in harmonic analysis of the power system and compared the amplitude response and error properties with other window functions. Then, an optimised CCWF and a new weighting method are proposed, which results in finite-difference operators with not only large spectral coverage but also small precision error fluctuation. In this paper, the analysis shows the good stability of using finite difference operators. Finally, we perform numerical forward modelling, which denotes that our method is superior than other optimum methods. From an economic point of view, this method will effectively reduce the computation cost and improve efficiency. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000576311700001 |
| 出版者 | TAYLOR & FRANCIS LTD |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/98289]  |
| 专题 | 地质与地球物理研究所_中国科学院油气资源研究重点实验室 |
| 通讯作者 | Li, Wen-Da |
| 作者单位 | 1.China Univ Geosci Beijing, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Key Lab Petr Resources Res, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Wen-Da,Meng, Xiao-Hong,Hong, Liu,et al. Optimal finite-difference schemes for elastic wave based on improved cosine-combined window function[J]. EXPLORATION GEOPHYSICS,2020:14. |
| APA | Li, Wen-Da.,Meng, Xiao-Hong.,Hong, Liu.,Jian, Wang.,Sheng, Gui.,...&Wang, Zhi-Yang.(2020).Optimal finite-difference schemes for elastic wave based on improved cosine-combined window function.EXPLORATION GEOPHYSICS,14. |
| MLA | Li, Wen-Da,et al."Optimal finite-difference schemes for elastic wave based on improved cosine-combined window function".EXPLORATION GEOPHYSICS (2020):14. |
入库方式： OAI收割
来源：地质与地球物理研究所
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