昆明上空电离层D区电子密度季节变化的首次观测分析

李娜; 陈金松; 丁宗华; 赵振维; 吴健

doi:10.11728/cjss2014.06.809

昆明上空电离层D区电子密度季节变化的首次观测分析

doi: 10.11728/cjss2014.06.809 cstr: 32142.14.cjss2014.06.809

李娜^1, ,,
陈金松^1,2,3,
丁宗华^1,4,
赵振维¹,
吴健¹

1.
中国电波传播研究所电波环境特性及模化技术重点实验室青岛 266107
2.
中国科学院空间科学与应用研究中心北京 100190
3.
中国科学院大学北京 100049
4.
空间天气学国家重点实验室北京 100190

基金项目: 国家自然科学基金项目资助(41104102)

详细信息

通讯作者:

李娜,13884631552@163.com

中图分类号: P352
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出版历程
- 收稿日期: 2013-12-20
- 修回日期: 2014-04-29
- 刊出日期: 2014-11-15

First Observation and Analysis of Seasonal Variation of the Ionosphere D Region Electron Density at Kunming

LI Na^{1
, ,},
CHEN Jinsong^1,2,3,
DING Zonghua^1,4,
ZHAO Zhenwei¹,
WU Jian¹

1.
National Key Laboratory of Electron Magnetic Environment, China Research Institute of Radio Wave Propagation, Qingdao 266107
2.
Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190
3.
University of Chinese Academy of Sciences, Beijing 100049
4.
State Key Laboratory for Space Weather, Beijing 100190

摘要

摘要: 通过分析2008年8月至2009年7月昆明站(25.6°N, 103.8°E) 中频(MF)雷达观测数据, 研究了太阳活动低年电离层D区电子密度的季节变化特性,发现D区电子密度主要呈现半年变化特征, 即在春秋季电子密度较大, 而在夏冬季则较小, 这与国际参考电离层(IRI)预测的年变化趋势不一致, 但与昆明站电离层测高仪的最低回波频率f_min的观测结果相符. 同时比较了D区电子密度半年变化与纬向风半年变化的关系, 发现二者之间保持了非常一致的变化趋势并对这种一致性的内在原因进行了分析.
- 电离层D区 /
- 电子密度 /
- 纬向风 /
- 季节变化
Abstract: The observed data by Kunming MF radar (25.6°N, 103.8°E) from August 2008 to July 2009 are employed to investigate the seasonal variation of the ionosphere D region electron density during low solar activity. The obvious characteristics in D region electron density is semiannual variation with the observed values larger in spring and autumn, smaller in su mmer and winter, which is different from the simulated result by International Reference Ionosphere (IRI). The result conforms to that observed by digital ionosonde. Then, comparison with that of zonal wind shows very good correspondence of changing trend between them. Finally the reasons leading to the correspondence are discussed.
- Ionosphere D region /
- Electron density /
- Zonal wind /
- Seasonal variation

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参考文献(27)

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