Statistical Study on the Occurrences of Postsunset Ionospheric E, Valley, and F Region Irregularities and Their Correlations Over Low-Latitude Sanya

doi:10.1029/2018JA025729

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院地球与行星物理重点实验室

	Statistical Study on the Occurrences of Postsunset Ionospheric E, Valley, and F Region Irregularities and Their Correlations Over Low-Latitude Sanya
	Xie, Haiyong 1,2; Li, Guozhu 1,2,3; Zhao, Xiukuan 1,2; Hu, Lianhuan 1,2; Wu, Baoyuan 2; Ning, Baiqi 1,2
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
	2018-11-01
卷号	123 期号:11 页码:9873-9880
ISSN号	2169-9380
DOI	10.1029/2018JA025729
英文摘要	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.
资助项目	National Natural Science Foundation of China[41727803] ; National Natural Science Foundation of China[41574149]
WOS关键词	EQUATORIAL SPREAD-F ; RAYLEIGH-TAYLOR INSTABILITY ; VHF RADAR ; FIELD ; MANIFESTATION ; DISRUPTION ; GENERATION ; EAR
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000453227400065
资助机构	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 ; 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
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/90265]
专题	地质与地球物理研究所_中国科学院地球与行星物理重点实验室
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
推荐引用方式 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.