An improvement to the transformation algorithm for the transient electromagnetic field
文献类型：期刊论文
| 作者 | Xue JunJie1; Zhong HuaSen2,3; Li Hai2,3; Li Xiu4; Di QingYun3; Wang HeYuan5; Tong ZhaoCheng1 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2018-12-01 |
| 卷号 | 61期号:12页码:5077-5083 |
| 关键词 | Wave-field transformation Singular value decomposition method Truncated singular Value method Modified truncated singular value method Numerical calculation |
| ISSN号 | 0001-5733 |
| DOI | 10.6038/cjg2018M0271 |
| 英文摘要 | Mathematically, there exist an effective transformation relationship between the electromagnetic (EM) and virtual seismic data fields, by which one can effectively to identify the underground target's interfaces using the EM method. Such transformation is a uncertain problem, which can be treated by the singular value decomposition (SVD) method. Because large singular values control main information of inversion matrix, small singular values are usually less important. So one usually ignores small singular values during singular value decomposition caluculation, leading to low precision results. To solve this problem, a new algorithm named the modified truncated singular value decomposition method was proposed, in which the ridge estimation method is used to calculate the virtual wave field caused by small singular values. The results of model calculation show that the improved truncated singular value method is better than the traditional singular value decomposition method. Using this new method, the survey data from a gob area of a coal mine was processed, and the interface of this area was successfully identified. |
| WOS关键词 | IMAGING TECHNIQUE ; TRUNCATED SVD ; FULL-TIME |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000454466600031 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/90244]  |
| 专题 | 地质与地球物理研究所_中国科学院矿产资源研究重点实验室 |
| 通讯作者 | Di QingYun |
| 作者单位 | 1.Liaoning Univ Technol, Coll Sci, Jinzhou 121001, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 3.Chinese Acad Sci Univ, Beijing 100049, Peoples R China 4.Changan Univ, Sch Geol Engn & Geomat, Xian 710054, Shaanxi, Peoples R China 5.Shenyang Normal Univ, Shenyang 110034, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xue JunJie,Zhong HuaSen,Li Hai,et al. An improvement to the transformation algorithm for the transient electromagnetic field[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2018,61(12):5077-5083. |
| APA | Xue JunJie.,Zhong HuaSen.,Li Hai.,Li Xiu.,Di QingYun.,...&Tong ZhaoCheng.(2018).An improvement to the transformation algorithm for the transient electromagnetic field.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,61(12),5077-5083. |
| MLA | Xue JunJie,et al."An improvement to the transformation algorithm for the transient electromagnetic field".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 61.12(2018):5077-5083. |
入库方式： OAI收割
来源：地质与地球物理研究所
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