3-D Gravity and Magnetic Inversion With a Modified Generalized Depth Weighting
文献类型：期刊论文
| 作者 | Zhu, Yingjie1,5; Wang, Dingding4; Liu, Jin4; Wang, Wanyin2,3,4 |
| 刊名 | IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
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| 出版日期 | 2025 |
| 卷号 | 63页码:13 |
| 关键词 | Geology Gravity Kernel Magnetosphere Magnetic resonance imaging Three-dimensional displays Vectors Sensitivity Data mining Surveys 3-D gravity and magnetic inversion central burial depth horizontal correction factor modified generalized depth weighting (MGDW) vertical correction factor |
| ISSN号 | 0196-2892 |
| DOI | 10.1109/TGRS.2025.3586257 |
| 通讯作者 | Zhu, Yingjie(yj_zhu0312@163.com) |
| 英文摘要 | Depth weighting plays an essential role in 3-D potential-field inversion to counteract the decay of the kernel function of gravity or magnetic potential fields, making the recovered results more consistent with the actual situation rather than being overly distributed near the surface. We propose a modified generalized depth weighting (MGDW) to improve the horizontal and vertical resolutions of the inversion with compact recovered results, removing the tendency to easily have a long "tail" with low amplitudes at depth for inversions using the traditional sensitivity matrix as the depth weighting when counteracting the tendency to concentrate near the surface. The improved process is achieved by applying central burial depths of the targets to analyze the decay features of the kernel functions from the initial forward modeling theory of gravity and magnetic anomalies, according to which a generalized depth weighting based on the sensitivity matrix is constructed and then horizontal and vertical correction factors are developed to create the modified one. Here, the central burial depths are estimated by extracting extrema of the depth from extreme points (DEXPs) for the potential field along the profiles, which are determined based on the delineated edges by the normalized vertical derivatives of the total horizontal derivative (NVDR-THDR) and the delineated centers by the NVDRs of the analytic signal amplitude (NVDR-ASA). The horizontal correction factor is determined based on the normalized potential field and its NVDR, which helps to narrow the horizontal range for inversion. The vertical correction factor is constructed based on the decay features of the field source in the upper and lower half-space regions. Synthetic examples with noisy gravity or magnetic anomalies, as well as the gravity inversion of Pako Guyot, demonstrate the robustness, effectiveness, and higher accuracy of the inversion using MGDW. By fully exploring the information of the potential field for self-constraints, the improved depth weighting for 3-D gravity and magnetic inversion can be extended to recover the deep structures of seamounts, ore deposits, etc., especially in cases where limited known constraint information is available. |
| WOS关键词 | POTENTIAL-FIELD DATA ; MINIMUM CURVATURE ; EDGE-RECOGNITION ; STRUCTURAL INDEX ; MODEL |
| 资助项目 | Open-End Fund through the Key Laboratory of Submarine Geosciences, Ministry of Natural Resources[KLSG2403] ; Marine Regional Geological Survey Project through China Geological Survey[DD20242758] |
| WOS研究方向 | Geochemistry & Geophysics ; Engineering ; Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:001531839300012 |
| 出版者 | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/202607]  |
| 专题 | 海洋研究所_海洋地质与环境重点实验室 |
| 通讯作者 | Zhu, Yingjie |
| 作者单位 | 1.China Geol Survey, Qingdao Inst Marine Geol, Qingdao 266237, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 3.Natl Engn Res Ctr Offshore Oil & Gas Explorat, Beijing 100028, Peoples R China 4.Changan Univ, Sch Geol Engn & Geomat, Xian 710054, Peoples R China 5.Minist Nat Resources, Key Lab Submarine Geosci, Hangzhou 310012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Yingjie,Wang, Dingding,Liu, Jin,et al. 3-D Gravity and Magnetic Inversion With a Modified Generalized Depth Weighting[J]. IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,2025,63:13. |
| APA | Zhu, Yingjie,Wang, Dingding,Liu, Jin,&Wang, Wanyin.(2025).3-D Gravity and Magnetic Inversion With a Modified Generalized Depth Weighting.IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,63,13. |
| MLA | Zhu, Yingjie,et al."3-D Gravity and Magnetic Inversion With a Modified Generalized Depth Weighting".IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 63(2025):13. |
入库方式： OAI收割
来源：海洋研究所
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