Extraction of secular variation signals of geomagnetic field and evaluation of prediction accuracy of geomagnetic field models
文献类型：期刊论文
| 作者 | Mao Ning3,4; Chen Shi3,4; Yang YongYou1,2; Wu Xu3,4; Li YongBo3,4 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2023-08-01 |
| 卷号 | 66期号:8页码:3302-3315 |
| 关键词 | Geomagnetic field IGRF WMM Secular variation Geomagnetic navigation |
| ISSN号 | 0001-5733 |
| DOI | 10.6038/cjg2022Q0499 |
| 英文摘要 | The purpose of this research is to compare the secular variations of the core field calculated by IGRF and WMM with those observed by geomagnetic stations and to quantitatively evaluate the accuracy of IGRF-12 and WMM2015 in mainland China. Based on the hourly mean data of 10 geomagnetic reference stations in mainland China from 2009 to 2022, we used annual differences of monthly means and principal component analysis to eliminate the external interference field and remove the crustal magnetic field to extract the secular variation of the core field. The results are the prediction accuracy of the seven geomagnetic elements in the WMM2015 model is better than that of IGRF-12, and the error will gradually increase with time. The maximum 1-year error of the total field intensity of the two models is 13 nT, and the 5-year error reaches 153.65 nT, which is difficult to meet the requirements of high-precision geomagnetic navigation. It is suggested to develop the rapid secular variation model (1 year) to improve its prediction accuracy by supplementing the multi-source magnetic survey data in China. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001045501300013 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/111405]  |
| 专题 | 地质与地球物理研究所_深部资源勘探装备研发 |
| 通讯作者 | Chen Shi |
| 作者单位 | 1.CAS Engn Lab Deep Resources Equipment & Technol, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.Beijing Baijiatuan Earth Sci Natl Observat & Res, Beijing 100095, Peoples R China 4.China Earthquake Adm, Inst Geophys, Beijing 100081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Mao Ning,Chen Shi,Yang YongYou,et al. Extraction of secular variation signals of geomagnetic field and evaluation of prediction accuracy of geomagnetic field models[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2023,66(8):3302-3315. |
| APA | Mao Ning,Chen Shi,Yang YongYou,Wu Xu,&Li YongBo.(2023).Extraction of secular variation signals of geomagnetic field and evaluation of prediction accuracy of geomagnetic field models.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,66(8),3302-3315. |
| MLA | Mao Ning,et al."Extraction of secular variation signals of geomagnetic field and evaluation of prediction accuracy of geomagnetic field models".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 66.8(2023):3302-3315. |
入库方式： OAI收割
来源：地质与地球物理研究所
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