Drifts and intensity variations of the geomagnetic field
文献类型：期刊论文
| 作者 | Wei, ZG; Xu, WY |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2001-07-01 |
| 卷号 | 44期号:4页码:500-509 |
| 关键词 | International Geomagnetic Reference Field geomagnetic anomaly westward drift intensity variation correlation analysis |
| ISSN号 | 0001-5733 |
| 文献子类 | Article |
| 英文摘要 | In this paper we modified the Briggs' method of correlation analysis of moving random pattern and studied the characteristics of the westward drift and intensity variations of the non-dipole geomagnetic field and 6 planetary-scale geomagnetic anomalies. During 1900-2000, the non-dipole field has drifted westward at an average speed of 0.15 degrees /a, and has intensified by 29%. Six planetary-scale magnetic anomalies exhibit different characteristics in the drift. The African anomaly (AF) drifts westward at an average speed of 0.26 degrees /a. The Australia anomaly drifts at an average speed of 0.23 degrees /a. The slowest drift occurs in the Eurasia anomaly at an average speed of 0.09 degrees /a. As drifting westward, most anomalies drift northward slowly. During 1945-1955, the anomalies EA, NAM, NAT in the northern hemisphere and AF near the equator changed its drift directions, from the westward to northwestward; a little later, the drifts of the anomalies AUS and SAT in the southern hemisphere slowed down. In the 20th century, the intensities of AUS, SAT, AF and EA have been increased, while the intensities of other two anomalies have been decreased. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000170181000008 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/76783]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Wei, ZG |
| 作者单位 | CAS, Inst Geol & Geophys, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wei, ZG,Xu, WY. Drifts and intensity variations of the geomagnetic field[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2001,44(4):500-509. |
| APA | Wei, ZG,&Xu, WY.(2001).Drifts and intensity variations of the geomagnetic field.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,44(4),500-509. |
| MLA | Wei, ZG,et al."Drifts and intensity variations of the geomagnetic field".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 44.4(2001):500-509. |
入库方式： OAI收割
来源：地质与地球物理研究所
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