DOI: 10.1002/2016GL070233
论文题名: Van Allen Probes observations of oxygen cyclotron harmonic waves in the inner magnetosphere
作者: Usanova M.E. ; Malaspina D.M. ; Jaynes A.N. ; Bruder R.J. ; Mann I.R. ; Wygant J.R. ; Ergun R.E.
刊名: Geophysical Research Letters
ISSN: 0094-8712
EISSN: 1944-8443
出版年: 2016
卷: 43, 期: 17 起始页码: 8827
结束页码: 8834
语种: 英语
英文关键词: cyclotron harmonic waves
; energetic particle loss
; geomagnetic storms
; inner magnetosphere
; oxygen
; Van Allen Probes
Scopus关键词: Cyclotron radiation
; Electric field effects
; Electric fields
; Electromagnetic waves
; Electron beams
; Geomagnetism
; Harmonic analysis
; Magnetosphere
; Oxygen
; Probes
; Radiation belts
; Storms
; Wave propagation
; Cyclotron frequency
; Cyclotron harmonics
; Energetic particles
; Geomagnetic storm
; Inner magnetosphere
; Ion cyclotron waves
; Poynting vectors
; Radiation belt electrons
; Cyclotrons
; electromagnetic radiation
; electron density
; geomagnetic storm
; harmonic analysis
; instrumentation
; magnetosphere
; oxygen
; particle motion
; probe
; satellite data
; wave field
; wave velocity
英文摘要: Waves with frequencies in the vicinity of the oxygen cyclotron frequency and its harmonics have been regularly observed on the Van Allen Probes satellites during geomagnetic storms. We focus on properties of these waves and present events from the main phase of two storms on 1 November 2012 and 17 March 2013 and associated dropouts of a few MeV electron fluxes. They are electromagnetic, in the frequency range ~0.5 to several Hz, and amplitude ~0.1 to a few nT in magnetic and ~0.1 to a few mV/m in electric field, with both the wave velocity and the Poynting vector directed almost parallel to the background magnetic field. These properties are very similar to those of electromagnetic ion cyclotron waves, which are believed to contribute to loss of ring current ions and radiation belt electrons and therefore can be also important for inner magnetosphere dynamics. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84984820317&doi=10.1002%2f2016GL070233&partnerID=40&md5=8e2bfc20990d3a2dd631d3bd7084f993
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9675
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, Boulder, CO, United States
Recommended Citation:
Usanova M.E.,Malaspina D.M.,Jaynes A.N.,et al. Van Allen Probes observations of oxygen cyclotron harmonic waves in the inner magnetosphere[J]. Geophysical Research Letters,2016-01-01,43(17).