Regional features of the secular variation of the geomagnetic field in China for 2000
文献类型：期刊论文
| 作者 | Xu, WY; Wei, ZG; Xia, GH |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2005-05-01 |
| 卷号 | 48期号:3页码:551-560 |
| 关键词 | Magnetic Charts Main Geomagnetic Field Secular Variation Of The Geomagnetic Field International Geomagnetic Reference Field (Igrf) China Geomagnetic Reference Field (Cgrf) |
| ISSN号 | 0001-5733 |
| 文献子类 | Article |
| 英文摘要 | On the basis of magnetic survey data during 1998-2001, the China Geomagnetic Reference Field Secular Variation model for 2000, CGRF-SV2000, is established. The model shows a slow and smooth variation of the magnetic field in China. The unsigned average annual rates are 12.2 nT/a, 8.2 nT/a, 43.8 nT/a, 11.8 nT/a, 0.96(')/a, 2.99(')/a and 22.4 nT/a for X, Y, Z, H, D, I and F, respectively. These rates are less than the global rates of IGRF by 1/2 to 1/3. The variations of different elements show an unified SV pattern in China: the north geomagnetic pole is moving to China, or China is moving toward high latitudes at a rate 3(')/a. In addition, the variation of declination D shows that the contrast of D between eastern and western China is enhanced. As a comparison and test, The 8th generation of the International Geomagnetic Reference Field (IGRF) model is used to analyze the secular change of the global geomagnetic field. The global SV estimated by the IGRF model shows similar characteristics compared with CGRF-SV2000, although the annual rates of IGRF-SV are greater than those of CGRF-SV, and some regional (or local) anomalies are noted. |
| WOS关键词 | CAP HARMONIC-ANALYSIS ; WESTWARD DRIFT ; MAGNETIC OBSERVATIONS ; CORE MOTIONS ; EARTH ; MODEL ; MAGSAT ; MANTLE ; DYNAMO ; JERKS |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000229401600012 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/65108]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Xu, WY |
| 作者单位 | Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, WY,Wei, ZG,Xia, GH. Regional features of the secular variation of the geomagnetic field in China for 2000[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2005,48(3):551-560. |
| APA | Xu, WY,Wei, ZG,&Xia, GH.(2005).Regional features of the secular variation of the geomagnetic field in China for 2000.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,48(3),551-560. |
| MLA | Xu, WY,et al."Regional features of the secular variation of the geomagnetic field in China for 2000".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 48.3(2005):551-560. |
入库方式： OAI收割
来源：地质与地球物理研究所
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