Research on the adaptive regularization filtering method of reduction-to-the-pole
文献类型：期刊论文
| 作者 | He Tao2,4; Wang Hao4; Zhang YiMi2,4; Wang WanYin1,3,4; Farquharson, Colin G.2; Welford, J. Kim2 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2024-03-01 |
| 卷号 | 67期号:3页码:1255-1272 |
| 关键词 | Reduction-to-the-pole (RTP) Low latitudes areas Amplitude Adaptive regularization filtering Iterative algorithm |
| ISSN号 | 0001-5733 |
| DOI | 10.6038/cjg2023Q0718 |
| 通讯作者 | Wang WanYin(wwy7902@chd.edu.cn) |
| 英文摘要 | Reduction-to-the-pole (RTP) is a significant step in eliminating the effects of oblique magnetization on magnetic anomaly. This process can be conducted in both the wave-number (frequency domain) and the spatial domains. The RTP in the wave-number domain (frequency domain) is more efficient than in the spatial domain, but it can be unstable in low latitude areas. Thus, it is necessary to define the scope of the low latitude areas and develop stable, practical, and high-precision RTP methods. In this paper, the theoretical study shows that the maximum value of the amplitude is 2, and the corresponding magnetization inclination is +/- 45 degrees. Within this range of magnetization inclination, causing the instability in RTP procedure. To address this issue, an adaptive regularization filtering method of reduction-to-the-pole (ARF-RTP) is proposed based on the regularization idea. The method constructs a regularization filtering function using the amplitude of RTP factor, and with the amplitude value of 2 as the constraint, the determination value of the parameter in the method is calculated to realize the adaptive RTP of magnetic anomaly, which improves the stability and practicability of the method. Additionally, an iterative algorithm is used to improve the accuracy of the method. The proposed ARF-RTP method effectively solves the instability problem of the RTP in the low latitude areas. The accuracy, stability, and practicality of the method are verified using synthetic models and real data. The adaptive regularization filtering can not only solve the instability problem of RTP but also address instability problems in data processing, such as component transformation or magnetization direction transformation of magnetic field. The ARF-RTP method has broad application prospects. |
| WOS关键词 | STABLE DOWNWARD CONTINUATION ; LOW LATITUDES ; MAGNETIZATION DIRECTION ; ITERATION METHOD ; ANALYTIC SIGNAL ; FIELD ; APPROXIMATION ; DERIVATIVES ; TRANSFORMS ; ANOMALIES |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001208197000029 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/185619]  |
| 专题 | 海洋研究所_海洋地质与环境重点实验室 |
| 通讯作者 | Wang WanYin |
| 作者单位 | 1.Natl Engn Res Ctr Offshore Oil & Gas Explorat, Beijing 100028, Peoples R China 2.Mem Univ Newfoundland, Dept Earth Sci, St John, NF A1B 3X5, Canada 3.Chinese Acad Sci, Key Lab Marine Geol & Environm, Qingdao 266071, Shandong, Peoples R China 4.Changan Univ, Coll Geol Engn & Geomat, Xian 710054, Peoples R China |
| 推荐引用方式 GB/T 7714 | He Tao,Wang Hao,Zhang YiMi,et al. Research on the adaptive regularization filtering method of reduction-to-the-pole[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2024,67(3):1255-1272. |
| APA | He Tao,Wang Hao,Zhang YiMi,Wang WanYin,Farquharson, Colin G.,&Welford, J. Kim.(2024).Research on the adaptive regularization filtering method of reduction-to-the-pole.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,67(3),1255-1272. |
| MLA | He Tao,et al."Research on the adaptive regularization filtering method of reduction-to-the-pole".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 67.3(2024):1255-1272. |
入库方式： OAI收割
来源：海洋研究所
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