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Statistical Study on the Occurrences of Postsunset Ionospheric E, Valley, and F Region Irregularities and Their Correlations Over Low-Latitude Sanya
Xie, Haiyong1,2; Li, Guozhu1,2,3; Zhao, Xiukuan1,2; Hu, Lianhuan1,2; Wu, Baoyuan2; Ning, Baiqi1,2
2018-11-01
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
ISSN2169-9380
卷号123期号:11页码:9873-9880
摘要The coupling of equatorial and low-latitude ionosphere has been an active area of research for many years. At low latitude, the occurrences of E and valley region irregularities during postsunset hours are obviously different from those around the magnetic equator. In this work, we statistically investigated the occurrences of postsunset ionospheric E, valley, and F region irregularities, the postsunset rise of F layer, and their correlations by using the Sanya (18.4 degrees N, 109.6 degrees E, dip latitude 12.8 degrees N) very high frequency radar and ionosonde observations during equinoctial months of 2012-2016. A statistically significant correlation between the presence of valley region irregularities and that of equatorial spread F (ESF) was found over Sanya. For the days without ESF, valley region irregularity was rarely observed. The Doppler velocities of valley region irregularities were mainly upward which resemble those of simultaneous ESF irregularities. On the other hand, an occurrence peak of E region irregularities was detected around sunset. After sunset, E region irregularity echo was frequently disrupted. The disruption can appear on both ESF and non-ESF days, when the amplitudes of F layer postsunset rise were significantly different. The effects of polarization electric field associated with ESF and of equatorial ionospheric background condition on the E and valley region irregularities over Sanya are discussed.
DOI10.1029/2018JA025729
资助者National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
关键词[WOS]EQUATORIAL SPREAD-F ; RAYLEIGH-TAYLOR INSTABILITY ; VHF RADAR ; FIELD ; MANIFESTATION ; DISRUPTION ; GENERATION ; EAR
语种英语
资助项目National Natural Science Foundation of China[41727803] ; National Natural Science Foundation of China[41574149]
资助者National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000453227400065
出版者AMER GEOPHYSICAL UNION
引用统计
文献类型期刊论文
条目标识符http://ir.iggcas.ac.cn/handle/132A11/90265
专题地球与行星物理院重点实验室
通讯作者Li, Guozhu
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing Natl Observ Space Environm, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
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GB/T 7714
Xie, Haiyong,Li, Guozhu,Zhao, Xiukuan,et al. Statistical Study on the Occurrences of Postsunset Ionospheric E, Valley, and F Region Irregularities and Their Correlations Over Low-Latitude Sanya[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2018,123(11):9873-9880.
APA Xie, Haiyong,Li, Guozhu,Zhao, Xiukuan,Hu, Lianhuan,Wu, Baoyuan,&Ning, Baiqi.(2018).Statistical Study on the Occurrences of Postsunset Ionospheric E, Valley, and F Region Irregularities and Their Correlations Over Low-Latitude Sanya.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,123(11),9873-9880.
MLA Xie, Haiyong,et al."Statistical Study on the Occurrences of Postsunset Ionospheric E, Valley, and F Region Irregularities and Their Correlations Over Low-Latitude Sanya".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 123.11(2018):9873-9880.
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