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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
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
ISSN2169-9380
Volume123Issue:11Pages:9873-9880
AbstractThe 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
Funding OrganizationNational 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 KeywordEQUATORIAL SPREAD-F ; RAYLEIGH-TAYLOR INSTABILITY ; VHF RADAR ; FIELD ; MANIFESTATION ; DISRUPTION ; GENERATION ; EAR
Language英语
Funding ProjectNational Natural Science Foundation of China[41727803] ; National Natural Science Foundation of China[41574149]
Funding OrganizationNational 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 Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000453227400065
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/90265
Collection地球与行星物理院重点实验室
Corresponding AuthorLi, Guozhu
Affiliation1.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
Recommended Citation
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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