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Statistical Analysis of Equatorial Plasma Irregularities Retrieved From Swarm 2013-2019 Observations
Alternative TitleWOS:000536831100043
Aa, Ercha1; Zou, Shasha; Liu, Siqing2
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
2020
Volume125Issue:4Pages:e2019JA027022
DOI10.1029/2019JA027022
ISSN2169-9380
Language英语
KeywordF-REGION IRREGULARITIES SPREAD-F LONGITUDINAL VARIABILITY IONOSPHERIC IRREGULARITIES DENSITY IRREGULARITIES GLOBAL CLIMATOLOGY BACKSCATTER PLUMES BUBBLE OCCURRENCE ELECTRIC-FIELDS MAGNETIC STORM
AbstractIn this study, we present a statistical analysis of equatorial plasma irregularities (EPIs) by using in situ plasma density measurements of the Swarm constellation from December 2013 to December 2019. The occurrence patterns for both postsunset and postmidnight EPIs with respect to longitude, season, local time, latitude, solar activity, and geomagnetic activity level are investigated. The main findings are as follows: (1) The postsunset/postmidnight EPIs occurrence rates exhibit different longitudinal and seasonal dependence: The postsunset EPIs have the maximum occurrence rate over the American-Atlantic sectors during the December solstice and equinoxes, and the postmidnight EPIs have the maximum occurrence rate during the June solstice, especially over the African sector. (2) The postsunset EPIs occurrence rates have a positive correlation with solar activity, while the postmidnight EPIs are negatively correlated with it. (3) The latitudinal distribution of EPIs exhibits a double-peak structure around +/- 5. magnetic latitude with a more significant peak in the summer hemisphere. (4) The EPIs occurrence rate increases with increasing geomagnetic activity level. (5) The main controlling factors for the distribution of postsunset EPIs are the magnetic declination angle, equatorial vertical E x B drift, and thermospheric zonal wind. For the postmidnight EPIs, the main controlling factors are likely to be atmospheric gravity waves and equatorward thermospheric meridional wind associated with midnight temperature maximum.
Indexed BySCI
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7625
Collection中国科学院国家空间科学中心
Affiliation1.Univ Michigan, Dept Climate & Space Sci & Engn, Ann Arbor, MI 48109 USA
2.MIT, Haystack Observ, Westford, MA 01886 USA
3.Chinese Acad Sci, Natl Space Sci Ctr, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Aa, Ercha,Zou, Shasha,Liu, Siqing. Statistical Analysis of Equatorial Plasma Irregularities Retrieved From Swarm 2013-2019 Observations[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2020,125(4):e2019JA027022.
APA Aa, Ercha,Zou, Shasha,&Liu, Siqing.(2020).Statistical Analysis of Equatorial Plasma Irregularities Retrieved From Swarm 2013-2019 Observations.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,125(4),e2019JA027022.
MLA Aa, Ercha,et al."Statistical Analysis of Equatorial Plasma Irregularities Retrieved From Swarm 2013-2019 Observations".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 125.4(2020):e2019JA027022.
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