Three-dimensional gravity inversion method based on the projection model subspace of the gravity vertical first derivative and the gravity tilt angle
文献类型：期刊论文
| 作者 | Wang, Qingluan1; Xiong, Shengqing4; Wang, Wanyin1,2,3 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2025-10-01 |
| 卷号 | 68期号:10页码:3992-4004 |
| 关键词 | Gravity anomaly 3D inversion Projection model subspace Vertical first order derivative Tilt angle |
| ISSN号 | 0001-5733 |
| DOI | 10.6038/cjg2024S0247 |
| 通讯作者 | Xiong, Shengqing(xsqagrs@126.com) |
| 英文摘要 | As a current research focus in the field of gravity exploration, three-dimensional (3D) gravity inversion can provide valuable information for geological structure research and mineral exploration. However, traditional 3D gravity inversion methods often face the challenges of large computational loads and high storage costs in practical applications. The subspace inversion method, widely used in seismic and electrical exploration, reduces the computational cost by using subspace linear representations of model terms, modifying the optimization objective, and lowering the dimensionality of the system. Applying the subspace method to 3D gravity inversion can improve the efficiency of preliminary underground density modeling and reduce trial-and-error costs in the subsequent refinement of the density model. Unlike previous methods that use the gradient from the iterative process as the subspace, this paper proposes a novel approach to compute the subspace by projecting the two-dimensional (2D) plane data distribution characteristics onto the 3D model distribution features. By using the vertical first-order derivative of gravity and the gravity tilt angle projection, a more optimal model subspace is obtained. The inversion results show that this method can more accurately reflect the boundaries between high-value physical property zones and the geological bodies of the source field, while also demonstrating a stronger focusing ability. To further reduce the computational cost of subspace inversion, this paper combines the method with a frequency-domain convolution fast algorithm, significantly improving the efficiency of forward modeling and matrix operations. In theoretical model tests, the feasibility and superiority of this projected model subspace inversion method were validated, with an overall improvement in computational efficiency of 97.33% to 99.14% compared to traditional inversion methods. In practical data tests, gravity subspace inversion was applied to the Olympic Dam study area, and inversion results consistent with the actual geological structure of the mining area were obtained in a much shorter computational time. |
| WOS关键词 | URANIUM ; DEPOSIT |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001594442300020 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/203620]  |
| 专题 | 海洋研究所_海洋地质与环境重点实验室 |
| 通讯作者 | Xiong, Shengqing |
| 作者单位 | 1.Changan Univ, Coll Geol Engn & Geomat, Xian 710054, Peoples R China 2.Natl Engn Res Ctr Offshore Oil & Gas Explorat, Beijing 100028, Peoples R China 3.Chinese Acad Sci, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 4.Minist Nat Resources, China Aero Geophys Survey & Remote Sensing Ctr Nat, Key Lab Airborne Geophys & Remote Sensing Geol, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Qingluan,Xiong, Shengqing,Wang, Wanyin. Three-dimensional gravity inversion method based on the projection model subspace of the gravity vertical first derivative and the gravity tilt angle[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2025,68(10):3992-4004. |
| APA | Wang, Qingluan,Xiong, Shengqing,&Wang, Wanyin.(2025).Three-dimensional gravity inversion method based on the projection model subspace of the gravity vertical first derivative and the gravity tilt angle.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,68(10),3992-4004. |
| MLA | Wang, Qingluan,et al."Three-dimensional gravity inversion method based on the projection model subspace of the gravity vertical first derivative and the gravity tilt angle".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 68.10(2025):3992-4004. |
入库方式： OAI收割
来源：海洋研究所
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