IMF B-y-controlled field-aligned currents in the magnetotail during northward interplanetary magnetic field
文献类型：期刊论文
| 作者 | Cheng, Z. W.; Shi, J. K.; Dunlop, M.; Liu, Z. X. |
| 刊名 | JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS
 |
| 出版日期 | 2014 |
| 卷号 | 115页码:52-58 |
| 关键词 | Field-aligned currents Magnetotail Interplanetary magnetic field B-y |
| ISSN号 | 1364-6826 |
| 通讯作者 | Cheng, ZW (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing, Peoples R China. |
| 英文摘要 | The influence of the interplanetary magnetic field (IMF) B-y component on the field-aligned currents (FACs) in the plasma sheet boundary layer (PSBL) in the magnetotail during the northward IMF were investigated using the data from Cluster. There are 748 FACs cases selected to do analysis. We present that the IMF B-y component plays a very important role in controlling the flow direction of the FACs in the PSBL in the magnetotail. In the northern hemisphere, the influence of the positive (negative) IMF B-y is an earthward (tailward) FACs. To the contrary, in the southern hemisphere, the effect of the positive (negative) IMF B-y is a tailward (earthward) FACs. There is a clear north-south asymmetry of the polarity of the FACs in the PSBL when IMF B-y is positive or negative, and this asymmetry of the polarity is more distinct when IMF B-y is positive. The FAC density is controlled by IMF B-y only when vertical bar IMF B-y vertical bar is large. When vertical bar IMF B-y vertical bar is more than 10 nT the absolute FAC density in the PSBL has an obvious positive correlation with the vertical bar IMF B-y vertical bar. When vertical bar IMF B-y vertical bar is less than 10 nT, there is no correlation between the absolute FAC density and vertical bar IMF B-y vertical bar. There is a clear dusk-dawn asymmetry in the current densities for the FACs in the PSBL, with the dawn currents appearing larger than the dusk currents. The FAC with the largest (smallest) density is located in the range of 0100 <= MLT < 0200 (2100 <= MLT < 2200). (C) 2013 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| 源URL | [http://ir.nssc.ac.cn/handle/122/4440]  |
| 专题 | 国家空间科学中心_空间科学部 |
| 推荐引用方式 GB/T 7714 | Cheng, Z. W.,Shi, J. K.,Dunlop, M.,et al. IMF B-y-controlled field-aligned currents in the magnetotail during northward interplanetary magnetic field[J]. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS,2014,115:52-58. |
| APA | Cheng, Z. W.,Shi, J. K.,Dunlop, M.,&Liu, Z. X..(2014).IMF B-y-controlled field-aligned currents in the magnetotail during northward interplanetary magnetic field.JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS,115,52-58. |
| MLA | Cheng, Z. W.,et al."IMF B-y-controlled field-aligned currents in the magnetotail during northward interplanetary magnetic field".JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS 115(2014):52-58. |
入库方式： OAI收割
来源：国家空间科学中心
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