Effect of the Non-Dipole Field on the Seasonal Variation of the Geomagnetic Sq(Y)
文献类型：期刊论文
| 作者 | Tian, Lin1,2; Du, Aimin1,2; Huang, Sheng1; Luo, Hao1,2; Xu, Wenyao1,2; Ge, Yasong1,2 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
 |
| 出版日期 | 2022-10-01 |
| 卷号 | 127期号:10页码:16 |
| ISSN号 | 2169-9380 |
| 关键词 | Sq seasonal variation South Atlantic Ocean anomaly |
| DOI | 10.1029/2022JA030441 |
| 英文摘要 | The annual mean (Sq(0)), annual (Sq(1)), and semiannual (Sq(2)) components of the monthly averaged daily amplitude of the geomagnetic Y component during quiet period over several solar cycles at 25 mid-low latitudes observatories were separated by means of Fourier analysis. No obvious distinction is found for the morphology of the spatial distribution of these Sq(Y) components during solar quiet and active periods, except that they are more intense in high solar activity. We found that the longitudinal variations in the Southern Hemisphere were primarily attributed to the differences in the annual component (Sq(1)), which is stronger at the Eurasia and Australia anomaly zones than at the South Atlantic Ocean anomaly (SAA) zones. The positive correlation between Sq(0) and geomagnetic vertical component Z suggests that the convection electric fields in the dynamo region play a key role in controlling the annual mean (Sq(0)). On the other hand, the Sq(1) exhibits a positive correlation with geomagnetic horizontal component H, implying the interhemispheric field-aligned currents (IHFACs) may contribute to difference of the annual variation amplitude at the different observatories. Sq(2) is most prominent in the SAA region while rather weak at other positive anomaly zones (in total field), which indicates there is a negative correlation between the total field anomaly and the semiannual variations. |
| WOS关键词 | CURRENT SYSTEM ; MAIN FIELD ; SQ ; QUIET ; DYNAMO ; SOLAR ; CURRENTS ; CONDUCTIVITY ; LATITUDES ; STRENGTH |
| 资助项目 | National Key R&D Program of China[2018YFC1503806] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB41010304] ; International Partnership Program of Chinese Academy of Sciences[183311KYSB20200017] ; Key Research Program of the Chinese Academy of Sciences[ZDBS-SSWTLC001] ; National Natural Science Foundation of China[41874197] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | AMER GEOPHYSICAL UNION |
| WOS记录号 | WOS:000864699000001 |
| 资助机构 | National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/107806]  |
| 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 | Luo, Hao |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, CAS Engn Lab Deep Resources Equipment & Technol, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tian, Lin,Du, Aimin,Huang, Sheng,et al. Effect of the Non-Dipole Field on the Seasonal Variation of the Geomagnetic Sq(Y)[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2022,127(10):16. |
| APA | Tian, Lin,Du, Aimin,Huang, Sheng,Luo, Hao,Xu, Wenyao,&Ge, Yasong.(2022).Effect of the Non-Dipole Field on the Seasonal Variation of the Geomagnetic Sq(Y).JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,127(10),16. |
| MLA | Tian, Lin,et al."Effect of the Non-Dipole Field on the Seasonal Variation of the Geomagnetic Sq(Y)".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 127.10(2022):16. |
入库方式： OAI收割
来源：地质与地球物理研究所
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