Does the equatorial ionospheric peak electron density really record the lowest during the recent deep solar minimum?
文献类型：期刊论文
| 作者 | Yang Jun1,2,3; Liu Li-Bo1; Chen Yi-Ding1; Le Hui-Jun1 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2012-09-01 |
| 卷号 | 55期号:9页码:2826-2834 |
| 关键词 | Solar minimum Equatorial ionosphere foF(2) |
| ISSN号 | 0001-5733 |
| DOI | 10.6038/j.issn.0001-5733.2012.09.002 |
| 文献子类 | Article |
| 英文摘要 | The solar activity in 2008-2009, located at the minimum phase of solar cycle 23/24, was unusually low, which attracts ionospheric physics scientists to explore the plasma behaviors in the ionosphere during the deep solar minimum. Some investigators reported a reduction in ionospheric electron density during this period, while others found a marginal and minor change. In this study we collected the critical frequency of the F2-layer ionosphere (foF(2)) data retrieved from ionogram records observed by an ionosonde at Jicamarca (12 degrees S, 76.9 degrees W), an American station located near the dip equator, to examine the changes in electron density in equatorial region and explore what caused the inconsistence between the differences of solar minimum foF(2) in published works. We determined the foF(2) differences in moving yearly, seasonal and monthly medians and the Fourier series analysis. The picture of ionospheric changes is found to be related with the data analysis method used. The seasonal median and moving yearly values of foF(2) are smaller in 2008-2009 than in 1996-1997, both in the daytime and nighttime. In contrast, the monthly median foF(2) is found to be of varying solar minimum-to-minimum differences. Although greater values in the last minimum are prevailing in the monthly median case at most local times, opposite changes are also found at some time intervals. Further analysis reveals that the reduction in foF(2) during the current solar cycle minimum is certainly presented in the longer time scale variations of foF(2). Therefore, the inconsistent changes in the published investigations reflect the impact of foF(2) variability on the solar minimum-to-minimum difference over different time scales. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000309628400002 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/84434]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Yang Jun |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing Natl Observ Space Environm, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Sate Key Lab Space Weather, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang Jun,Liu Li-Bo,Chen Yi-Ding,et al. Does the equatorial ionospheric peak electron density really record the lowest during the recent deep solar minimum?[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2012,55(9):2826-2834. |
| APA | Yang Jun,Liu Li-Bo,Chen Yi-Ding,&Le Hui-Jun.(2012).Does the equatorial ionospheric peak electron density really record the lowest during the recent deep solar minimum?.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,55(9),2826-2834. |
| MLA | Yang Jun,et al."Does the equatorial ionospheric peak electron density really record the lowest during the recent deep solar minimum?".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 55.9(2012):2826-2834. |
入库方式： OAI收割
来源：地质与地球物理研究所
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