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Stationary "nose-like" ion spectral structures in the inner magnetosphere: Observations by Van Allen probes and simulations

文献类型：期刊论文

作者Li, S. Y.1,2,3; Luo, H.1,2,3; Kronberg, E. A.8,9; Ferradas, C. P.6,7; Du, A. M.1,2,3,4; Ge, Y. S.1,2,3; Zhang, Y.1,3; Chen, G. X.1,2,3; Deng, H.5
刊名JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS
出版日期2020-12-01
卷号211页码:10
关键词"Nose" ion spectral structure Ion backward tracing Van Allen probes
ISSN号1364-6826
DOI10.1016/j.jastp.2020.105390
英文摘要The "Nose-like" ion spectral structures are characterized by the deep inward penetration of ions from the near -Earth plasma sheet and can extend to low L shells in the inner magnetosphere. The stationary "Nose-like" ion structures are believed to be driven by the stationary electric and magnetic field during quiet geomagnetic times. However, the global distribution picture, especially for each MLT, for both single and double stationary nose structures is still not reached. In this study, we statistically investigate the stationary "Nose-like" ion spectral structure based on 2 years of Van Allen probes observations. We find a clear MLT dependence of the number of stationary noses, with a higher occurrence of single-nose structures from 13 to 03 MLT, while a higher occurrence of double-nose structures from 03 to 13MLT. This is confirmed by calculating the backward drift time using backward tracing method based on the dipole magnetic field and Weimer 96 electric field model for each MLT. Simulation results indicate that the ion spectral gap, which is formed due to long drift time or existence of the ion forbidden region, controls the nose structure at different MLT during geomagnetic quiet times. A possible physical explanation of this MLT dependence can be a combination of the ion spectral gaps created by the region of long drift time in the dayside within the nose energy range and the persistent dawn-dusk asymmetries in the convection electric field.
WOS关键词RING CURRENT ; ELECTRIC-FIELD ; ENERGETIC PARTICLE ; MAGNETIC-FIELD ; MODEL ; FEATURES ; GAPS
资助项目National Key R&D Program of China[2018YFC1503806] ; National Natural Science of China[41574162] ; National Natural Science of China[41874197] ; German Research Foundation (DFG)[KR 4375/2-1]
WOS研究方向Geochemistry & Geophysics ; Meteorology & Atmospheric Sciences
语种英语
WOS记录号WOS:000591365100007
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science of China ; National Natural Science of China ; National Natural Science of China ; National Natural Science of China ; German Research Foundation (DFG) ; German Research Foundation (DFG) ; German Research Foundation (DFG) ; German Research Foundation (DFG) ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science of China ; National Natural Science of China ; National Natural Science of China ; National Natural Science of China ; German Research Foundation (DFG) ; German Research Foundation (DFG) ; German Research Foundation (DFG) ; German Research Foundation (DFG) ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science of China ; National Natural Science of China ; National Natural Science of China ; National Natural Science of China ; German Research Foundation (DFG) ; German Research Foundation (DFG) ; German Research Foundation (DFG) ; German Research Foundation (DFG) ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science of China ; National Natural Science of China ; National Natural Science of China ; National Natural Science of China ; German Research Foundation (DFG) ; German Research Foundation (DFG) ; German Research Foundation (DFG) ; German Research Foundation (DFG)
源URL[http://ir.iggcas.ac.cn/handle/132A11/99859]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Luo, H.
作者单位1.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 10029, Peoples R China
2.Univ Chinese Acad Sci, Geosci Sch, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
4.Macau Univ Sci & Technol, Macau, Peoples R China
5.Earthquake Adm Jiangxi Prov, Nanchang, Jiangxi, Peoples R China
6.Catholic Univ Amer, Dept Phys, Washington, DC 20064 USA
7.NASA, Geospace Phys Lab, Goddard Space Flight Ctr, Greenbelt, MD USA
8.Ludwig Maximilians Univ Munchen, Dept Earth & Environm Sci, Munich, Germany
9.Max Planck Inst Solar Syst Res, Gottingen, Germany
推荐引用方式
GB/T 7714		 Li, S. Y.,Luo, H.,Kronberg, E. A.,et al. Stationary "nose-like" ion spectral structures in the inner magnetosphere: Observations by Van Allen probes and simulations[J]. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS,2020,211:10.
APA Li, S. Y..,Luo, H..,Kronberg, E. A..,Ferradas, C. P..,Du, A. M..,...&Deng, H..(2020).Stationary "nose-like" ion spectral structures in the inner magnetosphere: Observations by Van Allen probes and simulations.JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS,211,10.
MLA Li, S. Y.,et al."Stationary "nose-like" ion spectral structures in the inner magnetosphere: Observations by Van Allen probes and simulations".JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS 211(2020):10.

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来源：地质与地球物理研究所

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