DOI: 10.1002/2013GL058889
论文题名: Fine structure of large-amplitude chorus wave packets
作者: Santolík O. ; Kletzing C.A. ; Kurth W.S. ; Hospodarsky G.B. ; Bounds S.R.
刊名: Geophysical Research Letters
ISSN: 0094-10475
EISSN: 1944-10206
出版年: 2014
卷: 41, 期: 2 起始页码: 293
结束页码: 299
语种: 英语
英文关键词: nonlinear phenomena
; waveform measurements
; whistler mode chorus
Scopus关键词: Electromagnetic waves
; Magnetic fields
; Waveform analysis
; Electric and magnetic fields
; Frequency element
; Instantaneous amplitude
; Non-linear phenomena
; Relativistic electron
; Wave-particle interactions
; Waveform measurement
; Whistler-mode chorus
; Atomic physics
; amplitude
; electric field
; electron
; magnetic field
; magnetosphere
; nonlinearity
; peak acceleration
; wave direction
英文摘要: Whistler mode chorus waves in the outer Van Allen belt can have consequences for acceleration of relativistic electrons through wave-particle interactions. New multicomponent waveform measurements have been collected by the Van Allen Probes Electric and Magnetic Field Instrument Suite and Integrated Science's Waves instrument. We detect fine structure of chorus elements with peak instantaneous amplitudes of a few hundred picotesla but exceptionally reaching up to 3 nT, i.e., more than 1% of the background magnetic field. The wave vector direction turns by a few tens of degrees within a single chorus element but also within its subpackets. Our analysis of a significant number of subpackets embedded in rising frequency elements shows that amplitudes of their peaks tend to decrease with frequency. The wave vector is quasi-parallel to the background magnetic field for large-amplitude subpackets, while it turns away from this direction when the amplitudes are weaker. ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84892395844&doi=10.1002%2f2013GL058889&partnerID=40&md5=b717c2acfc2c23f3764dfdf4aee5bc05
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7739
Appears in Collections: 气候减缓与适应
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作者单位: Institute of Atmospheric Physics ASCR, Prague, Czech Republic
Recommended Citation:
Santolík O.,Kletzing C.A.,Kurth W.S.,et al. Fine structure of large-amplitude chorus wave packets[J]. Geophysical Research Letters,2014-01-01,41(2).