"Trunk-like" heavy ion structures observed by the Van Allen Probes

doi:10.1002/2015JA021822

CORC > 地质与地球物理研究所 > 中国科学院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

	"Trunk-like" heavy ion structures observed by the Van Allen Probes
	Zhang, J. -C.1; Kistler, L. M.1; Spence, H. E.1; Wolf, R. A.2; Reeves, G.3; Skoug, R.3; Funsten, H.3; Larsen, B. A.3; Niehof, J. T.1; MacDonald, E. A.4
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
	2015-10-01
卷号	120 期号:10 页码:8738-8748
关键词	ion structure ion injection inner magnetosphere magnetic storm magnetic cloud Van Allen Probes
DOI	10.1002/2015JA021822
文献子类	Article
英文摘要	Dynamic ion spectral features in the inner magnetosphere are the observational signatures of ion acceleration, transport, and loss in the global magnetosphere. We report trunk-like ion structures observed by the Van Allen Probes on 2 November 2012. This new type of ion structure looks like an elephant's trunk on an energy-time spectrogram, with the energy of the peak flux decreasing Earthward. The trunks are present in He+ and O+ ions but not in H+. During the event, ion energies in the He+ trunk, located at L=3.6-2.6, magnetic local time (MLT)=9.1-10.5, and magnetic latitude (MLAT)=-2.4-0.09 degrees, vary monotonically from 3.5 to 0.04keV. The values at the two end points of the O+ trunk are energy=4.5-0.7keV, L=3.6-2.5, MLT=9.1-10.7, and MLAT=-2.4-0.4 degrees. Results from backward ion drift path tracings indicate that the trunks are likely due to (1) a gap in the nightside ion source or (2) greatly enhanced impulsive electric fields associated with elevated geomagnetic activity. Different ion loss lifetimes cause the trunks to differ among ion species.
WOS关键词	RING CURRENT PARTICLES ; INNER MAGNETOSPHERE ; GEOMAGNETIC STORMS ; ENERGETIC PARTICLE ; MAGNETIC STORM ; SIMULATIONS ; POTENTIALS ; DYNAMICS ; FEATURES ; LOSSES
WOS研究方向	Astronomy & Astrophysics
语种	英语
WOS记录号	WOS:000366135200040
资助机构	RBSP-ECT - JHU/APL contract under NASA(967399 ; RBSP-ECT - JHU/APL contract under NASA(967399 ; NASA(NNX13AE23G) ; NASA(NNX13AE23G) ; United States Department of Energy ; United States Department of Energy ; NAS5-01072) ; NAS5-01072) ; RBSP-ECT - JHU/APL contract under NASA(967399 ; RBSP-ECT - JHU/APL contract under NASA(967399 ; NASA(NNX13AE23G) ; NASA(NNX13AE23G) ; United States Department of Energy ; United States Department of Energy ; NAS5-01072) ; NAS5-01072)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/62150]
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
作者单位	1.Univ New Hampshire, Ctr Space Sci, Durham, NH 03824 USA 2.Rice Univ, Dept Phys & Astron, Houston, TX USA 3.Los Alamos Natl Lab, ISR Space Sci & Applicat, Los Alamos, NM USA 4.NASA, Goddard Space Flight Ctr, Geospace Phys Lab, Greenbelt, MD 20771 USA 5.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zhang, J. -C.,Kistler, L. M.,Spence, H. E.,et al. "Trunk-like" heavy ion structures observed by the Van Allen Probes[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2015,120(10):8738-8748.
APA	Zhang, J. -C..,Kistler, L. M..,Spence, H. E..,Wolf, R. A..,Reeves, G..,...&Luo, H..(2015)."Trunk-like" heavy ion structures observed by the Van Allen Probes.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,120(10),8738-8748.
MLA	Zhang, J. -C.,et al.""Trunk-like" heavy ion structures observed by the Van Allen Probes".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 120.10(2015):8738-8748.