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基于20072013年COSMIC掩星数据的电离层振幅闪烁研究
Alternative TitleA study of amplitude scintillation based on COSMIC occultation data during 2007 2013
吴迪; 王瑞
Source Publication电波科学学报
2019
Volume34Issue:5Pages:655-662; AR:1005-0388(2019)34:5<655:JY2NCY>2.0.TX;2-J
ISSN1005-0388
Language中文
Keyword无线电掩星 电离层闪烁 电离层不规则体 赤道F区不规则体 偶发E层 radio occultation ionospheric scintillation ionospheric irregularities equatorial F-region irregularities sporadic-E layer
Abstract利用2007 2013年的COSMIC掩星数据,分析了E区与F区电离层闪烁的变化特征.发现用闪烁出现频次、闪烁发生率以及闪烁强度来表征的电离层闪烁出现规律比较相似.E区电离层闪烁在夏季半球的中纬地区最强,其次是春秋季的低纬地区和冬季半球.就经度分布来说,春秋季E区电离层闪烁呈四波结构.对F区电离层闪烁来说:南美-大西洋扇区在12月至点最为显著;非洲和太平洋扇区在6月至点最为显著;大西洋扇区在春秋分季最为显著.极区也出现中等强度的闪烁,尤其在南半球的90°E~180°E扇区较为显著.高纬E区电离层闪烁强度随太阳活动的增强而增强,而低纬和南半球的中纬E区闪烁随太阳活动的增强而减弱.高纬和低纬F区闪烁随太阳活动的增强而增强,而中纬F区电离层闪烁对太阳活动无显著依赖关系.对于赤道区来说,北半球60°W~60°E经度区闪烁强度随太阳活动的变化最为显著,其次是南半球60°E~210°E附近;而对于高纬地区来说,F区闪烁强度随太阳活动的变化最为显著的区域在南半球60°E~210°E附近.
Other AbstractBased on the COSMIC (constellation observing system for meteorology, ionosphere and climate) GPS occultation data from 2007 to 2013,the characteristics of ionospheric scintillation in E and F regions are analyzed. It is found that the variations of ionospheric scintillation characterized by its frequency, occurrence or intensity are quite similar. Ionospheric scintillation in E region is the strongest in mid-latitudes of summer hemisphere, followed by that in low latitudes in equinox and winter hemisphere. The longitudinal variation of ionospheric scintillation in E-region presents a four-wave structure in equinox. The ionospheric scintillation in F region is strongest in South American-Atlantic sector in December solstice, in African and Pacific sector in June solstice and in Atlantic sector in equinox. The polar region has a weak contribution to the global ionospheric scintillation, mainly from the 90°E180°E sector. The intensity of ionospheric scintillation in E region increases with solar activities in high latitudes, but decreases in mid-latitude in southern hemisphere and low latitudes. The intensity of ionospheric scintillation in F region increases with solar activities in both high and low latitudes, with no significant trends in mid-latitudes. In low latitudes, the 60°W 60°E longitude in northern hemisphere has the most sensitive scintillation effects caused by solar activities, followed by the 60°E210°E longitude in southern hemisphere. In high latitudes, the 60°E210°E longitude in southern hemisphere has the most sensitive scintillation effects caused by solar activities.
Indexed ByCSCD
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7401
Collection中国科学院国家空间科学中心
Affiliation1.吴迪, 中国科学院国家空间科学中心
2.中国科学院大学, 北京
3.北京 100190
4.100049, 中国.
5.王瑞, 哈尔滨工业大学, 哈尔滨, 黑龙江 150001, 中国.
6.Wu Di, National Space Science Center,Chinese Academy of Sciences
7.University of Chinese Academy of Sciences, Beijing
8.Beijing 100190
9.100049.
10.Wang Rui, Harbini Institute of Technology, Harbin, Heilongjiang 150001, China.
11.wangrui217@126.com
Recommended Citation
GB/T 7714
吴迪,王瑞. 基于20072013年COSMIC掩星数据的电离层振幅闪烁研究[J]. 电波科学学报,2019,34(5):655-662; AR:1005-0388(2019)34:5<655:JY2NCY>2.0.TX;2-J.
APA 吴迪,&王瑞.(2019).基于20072013年COSMIC掩星数据的电离层振幅闪烁研究.电波科学学报,34(5),655-662; AR:1005-0388(2019)34:5<655:JY2NCY>2.0.TX;2-J.
MLA 吴迪,et al."基于20072013年COSMIC掩星数据的电离层振幅闪烁研究".电波科学学报 34.5(2019):655-662; AR:1005-0388(2019)34:5<655:JY2NCY>2.0.TX;2-J.
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