PMO OpenIR  > 太阳和太阳系等离子体研究团组
Kinetic Alfven turbulence below and above ion cyclotron frequency
Zhao, J. S.1,2; Voitenko, Y. M.3; Wu, D. J.1; Yu, M. Y.4,5,6
2016
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
Volume121Issue:1Pages:5-18
AbstractAlfvenic turbulent cascade perpendicular and parallel to the background magnetic field is studied accounting for anisotropic dispersive effects and turbulent intermittency. The perpendicular dispersion and intermittency make the perpendicular-wave-number magnetic spectra steeper and speed up production of high ion cyclotron frequencies by the turbulent cascade. On the contrary, the parallel dispersion makes the spectra flatter and decelerate the frequency cascade above the ion cyclotron frequency. Competition of these factors results in spectral indices distributed in the interval [-2, -3], where -2 is the index of high-frequency space-filling turbulence and -3 is the index of low-frequency intermittent turbulence formed by tube-like fluctuations. Spectra of fully intermittent turbulence fill a narrower range of spectral indices [-7/3, -3], which almost coincides with the range of indexes measured in the solar wind. This suggests that the kinetic-scale turbulent spectra are mainly shaped by the dispersion and intermittency. A small mismatch with measured indexes of about 0.1 can be associated with damping effects not studied here.
KeywordMhd Turbulence Sun: Corona Solar Wind
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1002/2015JA021959
WOS KeywordSOLAR-WIND TURBULENCE ; 1 AU ; PLASMA TURBULENCE ; ACCRETION FLOWS ; WAVES ; SCALES ; RANGE ; EXCITATION ; CLUSTER
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000371146900001
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/16161
Collection太阳和太阳系等离子体研究团组
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Key Lab Planetary Sci, Nanjing, Jiangsu, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing, Peoples R China
3.Belgian Inst Space Aeron, Space Phys Div, Solar Terr Ctr Excellence, Brussels, Belgium
4.Zhejiang Univ, Inst Fus Theory & Simulat, Hangzhou 310003, Zhejiang, Peoples R China
5.Zhejiang Univ, Dept Phys, Hangzhou 310003, Zhejiang, Peoples R China
6.Ruhr Univ Bochum, Inst Theoret Phys 1, Univ Str 150, Bochum, Germany
Recommended Citation
GB/T 7714
Zhao, J. S.,Voitenko, Y. M.,Wu, D. J.,et al. Kinetic Alfven turbulence below and above ion cyclotron frequency[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2016,121(1):5-18.
APA Zhao, J. S.,Voitenko, Y. M.,Wu, D. J.,&Yu, M. Y..(2016).Kinetic Alfven turbulence below and above ion cyclotron frequency.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,121(1),5-18.
MLA Zhao, J. S.,et al."Kinetic Alfven turbulence below and above ion cyclotron frequency".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 121.1(2016):5-18.
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