气候变化领域集成服务门户(CCPortal): Formation of the Low-Energy “Finger” Ion Spectral Structure Near the Inner Edge of the Plasma Sheet

CCPortal

DOI	10.1029/2020GL089875
	Formation of the Low-Energy “Finger” Ion Spectral Structure Near the Inner Edge of the Plasma Sheet
	Wang Y.B.; Kistler L.M.; Mouikis C.G.; Zhang J.C.; Lu J.Y.; Welling D.; Rastaetter L.; Bingham S.; Jin Y.W.; Wang L.; Miyoshi Y.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:22
英文摘要	We present a case study of the H+, He+, and O+ low-energy “finger” structure observed by the Van Allen Probe A Helium, Oxygen, Proton, and Electron (HOPE) spectrometer on 26 October 2016. This structure, whose characteristic energy is from approximately tens of eV to a few keV, looks like a “finger” that is rich in O+ and He+, faint in H+ on an energy-time spectrogram. By using the Space Weather Modeling Framework (SWMF) and Weimer05 electric fields, combined with a dipole or more self-consistent magnetohydrodynamic (MHD) magnetic field, backward tracing of O+ reveals that the structure is formed by ions with a long drift time from the plasma sheet during the magnetic storm main phase to the inner region with trajectories dominated by eastward drift motion, and the formation depends on the convection electric field model. The heavy ion dominance of the feature is explained by charge exchange losses along the long slow drift paths. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Aerospace vehicles; Charge transfer; Electric fields; Geomagnetism; Heavy ions; Ion exchange; Magnetohydrodynamics; Plasma sheaths; Characteristic energy; Charge exchanges; Drift motion; Electric-field model; Magnetic storms; Space weather modeling frameworks; Spectral structure; Spectrograms; Magnetoplasma; detection method; electric field; geomagnetic storm; instrumentation; magnetohydrodynamics; plasma
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169389
作者单位	Institute of Space Weather, Nanjing University of Information Science and Technology, Nanjing, China; Department of Physics and Space Science Center, University of New Hampshire, Durham, NH, United States; Staunch Data Analytics Lab, Durham, NH, United States; Physics Department, University of Texas at Arlington, Arlington, TX, United States; NASA Goddard Space Flight Center, Greenbelt, MD, United States; Applied Physics Laboratory, Johns Hopkins University, Laurel, MD, United States; Department of Mathematics And Physics, Nanjing Institute of Technology, Nanjing, China; Department of Astrophysical Sciences, Princeton University, Princeton, NJ, United States; Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan
推荐引用方式 GB/T 7714	Wang Y.B.,Kistler L.M.,Mouikis C.G.,等. Formation of the Low-Energy “Finger” Ion Spectral Structure Near the Inner Edge of the Plasma Sheet[J],2020,47(22).
APA	Wang Y.B..,Kistler L.M..,Mouikis C.G..,Zhang J.C..,Lu J.Y..,...&Miyoshi Y..(2020).Formation of the Low-Energy “Finger” Ion Spectral Structure Near the Inner Edge of the Plasma Sheet.Geophysical Research Letters,47(22).
MLA	Wang Y.B.,et al."Formation of the Low-Energy “Finger” Ion Spectral Structure Near the Inner Edge of the Plasma Sheet".Geophysical Research Letters 47.22(2020).