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Opposite Latitudinal Dependence of the Premidnight and Postmidnight Oscillations in the Electron Density of Midlatitude F Layer
Chen, Gang; Wang, Jin; Zhang, Shaodong; Deng, Zhongxin; Zhong, Dingkun; Wu, Chen; Jin, Han; Li, Yaxian; Chen, G (reprint author), Wuhan Univ, Sch Elect Informat, Wuhan, Hubei, Peoples R China.
作者部门空间科学部
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
2018
卷号123期号:1页码:796-807
ISSN2169-9380
语种英语
摘要The dense observation points of the oblique-incidence ionosonde network in North China make it possible to discover the ionospheric regional variations with relatively high spatial resolution. The ionosonde network and the Beijing digisonde are used to investigate the ionospheric nighttime oscillations in January and February 2011. The electron density enhancements occurring before and after midnight present the obvious opposite latitudinal dependence in the time-latitude maps, which are composed by the differential critical frequency of F-2 layer. The premidnight enhancements (PRMEs) appeared earlier in the north and then moved to south. The postmidnight enhancements (POMEs) did the opposite. The data analysis shows that the PRME was a part of the large-scale traveling ionospheric disturbance (LSTID), which may be produced by gravity waves. The southward propagation of the LSTIDs is considered to form the positive latitudinal dependence of the wave peaks and troughs. The postmidnight F layer oscillation was composed by a single enhancement and a single decline following it. The westward electric field-induced E x B drift, which pushed the F layer to lower altitudes with higher recombination loss, was most likely to compress the plasma and produce the POMEs. Along with the continuously dropping of the layer, the recombination loss exceeded the density increase due to the compression effect and then the electron density decline appeared.
收录类别SCI
文献类型期刊论文
条目标识符http://ir.nssc.ac.cn/handle/122/6203
专题空间科学部
通讯作者Chen, G (reprint author), Wuhan Univ, Sch Elect Informat, Wuhan, Hubei, Peoples R China.
推荐引用方式
GB/T 7714
Chen, Gang,Wang, Jin,Zhang, Shaodong,et al. Opposite Latitudinal Dependence of the Premidnight and Postmidnight Oscillations in the Electron Density of Midlatitude F Layer[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2018,123(1):796-807.
APA Chen, Gang.,Wang, Jin.,Zhang, Shaodong.,Deng, Zhongxin.,Zhong, Dingkun.,...&Chen, G .(2018).Opposite Latitudinal Dependence of the Premidnight and Postmidnight Oscillations in the Electron Density of Midlatitude F Layer.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,123(1),796-807.
MLA Chen, Gang,et al."Opposite Latitudinal Dependence of the Premidnight and Postmidnight Oscillations in the Electron Density of Midlatitude F Layer".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 123.1(2018):796-807.
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