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Nonstorm time scattering of ring current protons by electromagnetic ion cyclotron waves
Xiao, Fuliang; Yang, Chang; Zhou, Qinghua; He, Zhaoguo; He, Yihua; Zhou, Xiaoping; Tang, Lijun; Xiao, FL (reprint author), Changsha Univ Sci & Technol, Sch Phys & Elect Sci, Changsha 410004, Hunan, Peoples R China.
Department空间科学部
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
2012
Volume117Pages:A08204
ISSN0148-0227
Language英语
AbstractWe report correlated observation of enhanced electromagnetic ion cyclotron (EMIC) waves and dynamic evolution of ring current proton flux collected by Cluster satellite near the location L = 4.5 during March 26-27, 2003, a nonstorm period (D-st > -10). Energetic (5-30 keV) proton fluxes are found to drop rapidly (e.g., a half hour) at lower pitch angles, corresponding to intensified EMIC wave activities. By adopting a Gaussian fit to the observed spectra of EMIC waves, we present two-dimensional (2D) numerical simulations which demonstrate that EMIC wave can yield such decrements in proton flux within 30 minutes, consistent with the observational data. The current result provides a further understanding of ring current dynamics driven by wave-particle interaction under different geomagnetic activities.; We report correlated observation of enhanced electromagnetic ion cyclotron (EMIC) waves and dynamic evolution of ring current proton flux collected by Cluster satellite near the location L = 4.5 during March 26-27, 2003, a nonstorm period (D-st > -10). Energetic (5-30 keV) proton fluxes are found to drop rapidly (e.g., a half hour) at lower pitch angles, corresponding to intensified EMIC wave activities. By adopting a Gaussian fit to the observed spectra of EMIC waves, we present two-dimensional (2D) numerical simulations which demonstrate that EMIC wave can yield such decrements in proton flux within 30 minutes, consistent with the observational data. The current result provides a further understanding of ring current dynamics driven by wave-particle interaction under different geomagnetic activities.
Indexed BySCI
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/3117
Collection空间科学部
Corresponding AuthorXiao, FL (reprint author), Changsha Univ Sci & Technol, Sch Phys & Elect Sci, Changsha 410004, Hunan, Peoples R China.
Recommended Citation
GB/T 7714
Xiao, Fuliang,Yang, Chang,Zhou, Qinghua,et al. Nonstorm time scattering of ring current protons by electromagnetic ion cyclotron waves[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2012,117:A08204.
APA Xiao, Fuliang.,Yang, Chang.,Zhou, Qinghua.,He, Zhaoguo.,He, Yihua.,...&Xiao, FL .(2012).Nonstorm time scattering of ring current protons by electromagnetic ion cyclotron waves.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,117,A08204.
MLA Xiao, Fuliang,et al."Nonstorm time scattering of ring current protons by electromagnetic ion cyclotron waves".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 117(2012):A08204.
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