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Quasiperiodic Rising Structures in the E-F Valley Region Below the Equatorial Plasma Bubble: A Numerical Study
Savio, S.; Sousasantos, J.; Pimenta, A. A.; Yang, G.; Kherani, E. A.; Wang, C.; Liu, Z.
Department空间科学部
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
2019
Volume124Issue:8Pages:7247-7255
DOI10.1029/2019JA026620
ISSN2169-9380
Language英语
KeywordNumerical simulation Equatorial plasma irregularities Equatorial QuasiPeriodic echoes
AbstractThis paper presents a numerical study aiming to understand the generating mechanism of poorly studied equatorial plasma irregularities known as equatorial quasiperiodic echoes. Employing a two-dimensional model of the collisional interchange instability, the simulations are able to reproduce the spatial periodic features of this kind of irregular structures. The usage of an instability seeding source considering an overlap of two gravity waves with different wavelengths was capable to produce such quasiperiodic structures. The results suggest that the penetration of the equatorial plasma bubble fringe fields in typical altitudes of the valley region may be the physical mechanism responsible for the structures. Additionally, the simulation results indicate that the lower wavelength gravity wave dominates over the quasiperiodic nature of the these irregularities. The simulations results present considerable agreement with radar and in situ measurements of these quasiperiodic structures.
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7199
Collection空间科学部
Recommended Citation
GB/T 7714
Savio, S.,Sousasantos, J.,Pimenta, A. A.,et al. Quasiperiodic Rising Structures in the E-F Valley Region Below the Equatorial Plasma Bubble: A Numerical Study[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2019,124(8):7247-7255.
APA Savio, S..,Sousasantos, J..,Pimenta, A. A..,Yang, G..,Kherani, E. A..,...&Liu, Z..(2019).Quasiperiodic Rising Structures in the E-F Valley Region Below the Equatorial Plasma Bubble: A Numerical Study.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,124(8),7247-7255.
MLA Savio, S.,et al."Quasiperiodic Rising Structures in the E-F Valley Region Below the Equatorial Plasma Bubble: A Numerical Study".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 124.8(2019):7247-7255.
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