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Statistical Characteristics and Correlation of Low-Latitude F Region Bottom-Type Irregularity Layers and Plasma Plumes Over Sanya

文献类型：期刊论文

作者Hu, Lianhuan1,2,3; Zhao, Xiukuan1,2,3; Sun, Wenjie1,2,3; Wu, Zhi1; Zheng, Jianchang1,2,3; Xie, Haiyong1,2,3; Huang, Zhaoguo1; Ning, Baiqi1,2,3; Li, Guozhu1,2,3,4
刊名JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
出版日期2020-08-01
卷号125期号:8页码:13
关键词equatorial plasma plume bottom-type irregularity layer radar low latitude
ISSN号2169-9380
DOI10.1029/2020JA027855
英文摘要Ionospheric F region bottom-type irregularity layer has been frequently detected at equatorial latitude and regarded as a possible precursor of equatorial backscatter plumes producing scintillations. In this study, the VHF radar observations of ionospheric F region bottom-type irregularity layers and plasma plumes over the low-latitude station Sanya (18.4 degrees N, 109.6 degrees E, dip lat. 12.8 degrees N) during the equinoctial months (March, April, September, and October) of 2011-2018 are analyzed. The results show an equinoctial asymmetry in the occurrence of F region backscatter plumes, wherein the occurrence could be greater in spring or autumn months under different solar activities and background ionospheric conditions (F layer height and density). On the other hand, the bottom-type irregularity layer occurred almost exclusively in the descending phase of solar cycle (2015-2018). No clear correlation is found between the occurrences of bottom-type irregularity layer and plasma plume at low latitude. The F layer virtual height (hF) observations from the Sanya ionosonde show that the average hF is higher during the months when the plume occurrence is higher, suggesting that the asymmetric plasma vertical drift could play a role in the equinoctial asymmetry of plume occurrence. Larger vertical drift (and higher hF) could cause higher occurrence of equatorial plasma plumes which extend to low latitudes along magnetic field lines. In contrast, during the days when bottom-type irregularity layers occur, the hF is relatively lower. We surmise that only when the background F region is situated at low altitudes (with h ' F < similar to 250 km), the low-latitude bottom-type irregularity layer could be generated.
WOS关键词EQUATORIAL-SPREAD-F ; IONOSPHERE-THERMOSPHERE SYSTEM ; RADAR OBSERVATIONS ; VHF RADAR ; JULIA RADAR ; INSTABILITY ; GENERATION ; EVOLUTION ; DRIFTS ; ONSET
资助项目Natural National Science Foundation of China[41727803] ; Natural National Science Foundation of China[41574149] ; Solar-Terrestrial Environment Research Network (STERN) of Chinese Academy of Sciences
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000577125000073
出版者AMER GEOPHYSICAL UNION
资助机构Natural National Science Foundation of China ; Natural National Science Foundation of China ; Natural National Science Foundation of China ; Natural National Science Foundation of China ; Solar-Terrestrial Environment Research Network (STERN) of Chinese Academy of Sciences ; Solar-Terrestrial Environment Research Network (STERN) of Chinese Academy of Sciences ; Solar-Terrestrial Environment Research Network (STERN) of Chinese Academy of Sciences ; Solar-Terrestrial Environment Research Network (STERN) of Chinese Academy of Sciences ; Natural National Science Foundation of China ; Natural National Science Foundation of China ; Natural National Science Foundation of China ; Natural National Science Foundation of China ; Solar-Terrestrial Environment Research Network (STERN) of Chinese Academy of Sciences ; Solar-Terrestrial Environment Research Network (STERN) of Chinese Academy of Sciences ; Solar-Terrestrial Environment Research Network (STERN) of Chinese Academy of Sciences ; Solar-Terrestrial Environment Research Network (STERN) of Chinese Academy of Sciences ; Natural National Science Foundation of China ; Natural National Science Foundation of China ; Natural National Science Foundation of China ; Natural National Science Foundation of China ; Solar-Terrestrial Environment Research Network (STERN) of Chinese Academy of Sciences ; Solar-Terrestrial Environment Research Network (STERN) of Chinese Academy of Sciences ; Solar-Terrestrial Environment Research Network (STERN) of Chinese Academy of Sciences ; Solar-Terrestrial Environment Research Network (STERN) of Chinese Academy of Sciences ; Natural National Science Foundation of China ; Natural National Science Foundation of China ; Natural National Science Foundation of China ; Natural National Science Foundation of China ; Solar-Terrestrial Environment Research Network (STERN) of Chinese Academy of Sciences ; Solar-Terrestrial Environment Research Network (STERN) of Chinese Academy of Sciences ; Solar-Terrestrial Environment Research Network (STERN) of Chinese Academy of Sciences ; Solar-Terrestrial Environment Research Network (STERN) of Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/98323]  
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, Beijing Natl Observ Space Environm, Beijing, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
3.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing, Peoples R China
4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Hu, Lianhuan,Zhao, Xiukuan,Sun, Wenjie,et al. Statistical Characteristics and Correlation of Low-Latitude F Region Bottom-Type Irregularity Layers and Plasma Plumes Over Sanya[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2020,125(8):13.
APA Hu, Lianhuan.,Zhao, Xiukuan.,Sun, Wenjie.,Wu, Zhi.,Zheng, Jianchang.,...&Li, Guozhu.(2020).Statistical Characteristics and Correlation of Low-Latitude F Region Bottom-Type Irregularity Layers and Plasma Plumes Over Sanya.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,125(8),13.
MLA Hu, Lianhuan,et al."Statistical Characteristics and Correlation of Low-Latitude F Region Bottom-Type Irregularity Layers and Plasma Plumes Over Sanya".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 125.8(2020):13.

入库方式： OAI收割

来源：地质与地球物理研究所

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