气候变化领域集成服务门户(CCPortal): Global Survey of Plasma Sheet Electron Precipitation due to Whistler Mode Chorus Waves in Earth's Magnetosphere

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DOI	10.1029/2020GL088798
	Global Survey of Plasma Sheet Electron Precipitation due to Whistler Mode Chorus Waves in Earth's Magnetosphere
	Ma Q.; Connor H.K.; Zhang X.-J.; Li W.; Shen X.-C.; Gillespie D.; Kletzing C.A.; Kurth W.S.; Hospodarsky G.B.; Claudepierre S.G.; Reeves G.D.; Spence H.E.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:15
英文摘要	Whistler mode chorus waves can scatter plasma sheet electrons into the loss cone and produce the Earth's diffuse aurora. Van Allen Probes observed plasma sheet electron injections and intense chorus waves on 24 November 2012. We use quasilinear theory to calculate the precipitating electron fluxes, demonstrating that the chorus waves could lead to high differential energy fluxes of precipitating electrons with characteristic energies of 10–30 keV. Using this method, we calculate the precipitating electron flux from 2012 to 2019 when the Van Allen Probes were near the magnetic equator and perform global surveys of electron precipitation under different geomagnetic conditions. The most significant electron precipitation due to chorus is found from the nightside to dawn sectors over 4 < L < 6.5. The average total precipitating energy flux is enhanced during disturbed conditions, with time-averaged values reaching ~3–10 erg/cm2/s when AE ≥ 500 nT. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Electromagnetic waves; Electrons; Geomagnetism; Magnetosphere; Plasma sheaths; Probes; Surveys; Characteristic energy; Differential energy; Earth's magnetosphere; Electron precipitation; Geomagnetic conditions; Magnetic equator; Quasilinear theory; Whistler-mode chorus; Atmospherics; aurora; diffusion; electron; energy flux; geomagnetic storm; magnetosphere; plasma; precipitation (chemistry); probe; survey
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/169982
作者单位	Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, CA, United States; Center for Space Physics, Boston University, Boston, MA, United States; Geophysical Institute and Physics Department, University of Alaska Fairbanks, Fairbanks, AK, United States; Department of Earth, Planetary and Space Sciences, University of California, Los Angeles, CA, United States; Department of Physics and Astronomy, University of Iowa, Iowa City, IA, United States; Space Sciences Department, The Aerospace Corporation, Los Angeles, CA, United States; Space Science and Applications Group, Los Alamos National Laboratory, Los Alamos, NM, United States; Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH, United States
推荐引用方式 GB/T 7714	Ma Q.,Connor H.K.,Zhang X.-J.,et al. Global Survey of Plasma Sheet Electron Precipitation due to Whistler Mode Chorus Waves in Earth's Magnetosphere[J],2020,47(15).
APA	Ma Q..,Connor H.K..,Zhang X.-J..,Li W..,Shen X.-C..,...&Spence H.E..(2020).Global Survey of Plasma Sheet Electron Precipitation due to Whistler Mode Chorus Waves in Earth's Magnetosphere.Geophysical Research Letters,47(15).
MLA	Ma Q.,et al."Global Survey of Plasma Sheet Electron Precipitation due to Whistler Mode Chorus Waves in Earth's Magnetosphere".Geophysical Research Letters 47.15(2020).