3D physical property inversion for gravity data based onthreshold pruning iterative algorithm
文献类型：期刊论文
| 作者 | Zhang, Yimi4,5; Xiong, Shengqing1,6; Wang, Hao2,3; Wang, Wanyin4,5,9; Yang, Min7,8 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2025-09-01 |
| 卷号 | 68期号:9页码:3616-3633 |
| 关键词 | Gravity data Physical property inversion Threshold pruning iterative algorithm L-2-norm Inversion resolution |
| ISSN号 | 0001-5733 |
| DOI | 10.6038/cjg2024S0470 |
| 通讯作者 | Xiong, Shengqing(xsqagrs@126.com) |
| 英文摘要 | The utilization of gravity data inversion to acquire the distribution of underground density non-uniform bodies holds significant importance in the search for target geological bodies. The majority of physical property inversion methods for gravity data are based on the L-2-norm minimization of observed data and model parameter constraints, with the optimal method employed for solving to obtain the physical property distribution results. Owing to the influence of the "skin effect" during the inversion process, the physical property inversion results frequently concentrate near the observation surface, which can give rise to certain troubles in actual geological interpretation. The introduction of the depth-weighted function can partially alleviate the "skin effect", but simultaneously introduces the "trailing effect" and "associated anomalies", resulting in relatively low horizontal and vertical resolutions of the inversion results. Based on the fundamental principle of Tikhonov regularization for three-dimensional physical property inversion of gravity data, a three-dimensional focusing inversion method for gravity data based on threshold pruning iterative algorithm is presented in this paper. By re-utilizing the weak anomalies induced by the L-2-norm constraint inversion to convert and enhance the original physical property distribution around the target geological body, the objective of focusing the physical property inversion results is accomplished. To a certain extent, this method has overcome the influences of the "skin effect" and "trailing effect", and enhanced the resolution of the inversion results. This method is applied in the theoretical model test, and the test results indicate that the inversion results of this method are more in line with the spatial position and physical property values of the theoretical model, thereby verifying the correctness of this method. Finally, the method in this paper is utilized to invert the gravity data of the Olympic Dam multi-metal mining area in Australia, attaining the density distribution results that match the known geological information, thereby embodying the effectiveness of this method. |
| WOS关键词 | OLYMPIC DAM ; 3-D INVERSION ; MAGNETIC INVERSION ; FOCUSING INVERSION ; STRUCTURAL INDEX ; SOUTH-AUSTRALIA ; JOINT INVERSION ; ANOMALIES ; GRADIENT ; URANIUM |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001571941600023 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/203383]  |
| 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.Minist Nat Resources, Remote Sensing Ctr Nat Resources, Key Lab Airborne Geophys & Remote Sensing Geol, Beijing 100083, Peoples R China 2.State Key Lab Spatial Datum, Xian 710054, Peoples R China 3.Res Inst Surveying & Mapping, Xian 710054, Peoples R China 4.Changan Univ, Key Lab Western Mineral Resources & Geol Engn, Minist Educ, Xian 710054, Peoples R China 5.Natl Engn Res Ctr Offshore Oil & Gas Explorat, Beijing 100028, Peoples R China 6.Minist Nat Resources, China Aero Geophys Survey, Beijing 100083, Peoples R China 7.China Univ Geosci, Hubei Subsurface Multiscale Imaging Key Lab, Wuhan 430074, Peoples R China 8.Key Lab Smart Earth, Xian 710054, Peoples R China 9.Chinese Acad Sci, Key Lab Marine Geol & Environm, Qingdao 266071, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yimi,Xiong, Shengqing,Wang, Hao,et al. 3D physical property inversion for gravity data based onthreshold pruning iterative algorithm[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2025,68(9):3616-3633. |
| APA | Zhang, Yimi,Xiong, Shengqing,Wang, Hao,Wang, Wanyin,&Yang, Min.(2025).3D physical property inversion for gravity data based onthreshold pruning iterative algorithm.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,68(9),3616-3633. |
| MLA | Zhang, Yimi,et al."3D physical property inversion for gravity data based onthreshold pruning iterative algorithm".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 68.9(2025):3616-3633. |
入库方式： OAI收割
来源：海洋研究所
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