Postmidnight equatorial plasma irregularities on the June solstice during low solar activity - a case study
文献类型：期刊论文
| 作者 | Candido, Claudia M. N.1,2; Shi, Jiankui1; Batista, Inez S.2; Becker-Guedes, Fabio2; Correia, Emilia2,6; Abdu, Mangalathayil A.2,4; Makela, Jonathan3; Balan, Nanan7; Chapagain, Narayan5; Wang, Chi1 |
| 刊名 | ANNALES GEOPHYSICAE
 |
| 出版日期 | 2019-07-30 |
| 卷号 | 37期号:4页码:657-672 |
| ISSN号 | 0992-7689 |
| DOI | 10.5194/angeo-37-657-2019 |
| 英文摘要 | We present a case study of unusual spread-F structures observed by ionosondes at two equatorial and low-latitude Brazilian stations - Sao Luis (SL: 44.2 degrees W, 2.33 degrees S; dip angle: -6.9 degrees) and Fortaleza (FZ: 38.45 degrees W, 3.9 degrees S; dip angle: -16 degrees). The irregularity structures observed from midnight to postmidnight hours of moderate solar activity (F10.7 < 97 sfu, where 1 sfu = 10(-22) W m(-2) s(-1)) have characteristics different from typical post-sunset equatorial spread F. The spread-F traces first appeared at or above the F-layer peak and gradually became well-formed mixed spread F. They also appeared as plasma depletions in the 630.0 nm airglow emissions made by a wide-angle imager located at the nearby low-latitude station Cajazeiras (CZ: 38.56 degrees W, 6.87 degrees S; dip angle: -21.4 degrees). The irregularities appeared first over FZ and later over SL, giving evidence of an unusual westward propagation or a horizontal plasma advection. The drift-mode operation available in one of the ionosondes (a digital portable sounder, DPS-4) has enabled us to analyze the horizontal drift velocities and directions of the irregularity movement. We also analyzed the neutral wind velocity measured by a Fabry-Perot interferometer (FPI) installed at CZ and discuss its possible role in the development of the irregularities. |
| WOS关键词 | FIELD-ALIGNED IRREGULARITIES ; SPREAD-F ; REGION ; BUBBLES ; RADAR |
| 资助项目 | China-Brazil Joint Laboratory for Space Weather (CBJLSW) ; Brazilian funding agency (CNPq)[64537/2015-5] ; National Natural Science Foundation of China (NSSC)[41474137] ; National Natural Science Foundation of China (NSSC)[1674145] ; National Science Foundation CEDAR[AGS 09-40253] |
| WOS研究方向 | Astronomy & Astrophysics ; Geology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000477871400002 |
| 出版者 | COPERNICUS GESELLSCHAFT MBH |
| 资助机构 | China-Brazil Joint Laboratory for Space Weather (CBJLSW) ; Brazilian funding agency (CNPq) ; National Natural Science Foundation of China (NSSC) ; National Science Foundation CEDAR ; China-Brazil Joint Laboratory for Space Weather (CBJLSW) ; Brazilian funding agency (CNPq) ; National Natural Science Foundation of China (NSSC) ; National Science Foundation CEDAR ; China-Brazil Joint Laboratory for Space Weather (CBJLSW) ; Brazilian funding agency (CNPq) ; National Natural Science Foundation of China (NSSC) ; National Science Foundation CEDAR ; China-Brazil Joint Laboratory for Space Weather (CBJLSW) ; Brazilian funding agency (CNPq) ; National Natural Science Foundation of China (NSSC) ; National Science Foundation CEDAR |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/92961]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Candido, Claudia M. N. |
| 作者单位 | 1.Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab, China Brazil Joint Lab Space Weather, Beijing, Peoples R China 2.Natl Inst Space Res INPE, Sao Jose Dos Campos, SP, Brazil 3.Univ Illinois, Dept Elect & Comp Engn, 1406 W Green St, Urbana, IL 61801 USA 4.Inst Tecnol Aeronaut ITA, Sao Jose Dos Campos, Brazil 5.Tribhuvan Univ, Dept Phys, Patan Multiple Campus, Latitpur, Nepal 6.Univ Presbiteriana Mackenzie, Ctr Radio Astron & Astrofis Mackenzie, Sao Paulo, Brazil 7.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Candido, Claudia M. N.,Shi, Jiankui,Batista, Inez S.,et al. Postmidnight equatorial plasma irregularities on the June solstice during low solar activity - a case study[J]. ANNALES GEOPHYSICAE,2019,37(4):657-672. |
| APA | Candido, Claudia M. N..,Shi, Jiankui.,Batista, Inez S..,Becker-Guedes, Fabio.,Correia, Emilia.,...&Liu, Zhengkuan.(2019).Postmidnight equatorial plasma irregularities on the June solstice during low solar activity - a case study.ANNALES GEOPHYSICAE,37(4),657-672. |
| MLA | Candido, Claudia M. N.,et al."Postmidnight equatorial plasma irregularities on the June solstice during low solar activity - a case study".ANNALES GEOPHYSICAE 37.4(2019):657-672. |
入库方式： OAI收割
来源：地质与地球物理研究所
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