DOI: 10.1002/2014GL059815
论文题名: Propagation of lower-band whistler-mode waves in the outer Van Allen belt: Systematic analysis of 11years of multi-component data from the Cluster spacecraft
作者: Santolík O. ; Macúšová E. ; Kolmašová I. ; Cornilleau-Wehrlin N. ; De Conchy Y.
刊名: Geophysical Research Letters
ISSN: 0094-10123
EISSN: 1944-9854
出版年: 2014
卷: 41, 期: 8 起始页码: 2729
结束页码: 2737
语种: 英语
英文关键词: Van Allen radiation belts
; wave vector directions
; whistler-mode chorus
Scopus关键词: Ionizing radiation
; Magnetoplasma
; Probability distributions
; Radiation belts
; Spacecraft
; Vectors
; Wave propagation
; Local magnetic field
; Outer radiation belt
; Propagation parameters
; Systematic analysis
; Van allen radiation belts
; Wave vector
; Whistler-mode chorus
; Whistler-mode waves
; Data flow analysis
; electromagnetic wave
; magnetic field
; magnetosphere
; parameterization
; probability
; spacecraft
; wave propagation
英文摘要: Lower-band whistler-mode emissions can influence the dynamics of the outer Van Allen radiation belts. We use 11years of measurements of the STAFF-SA instruments onboard the four Cluster spacecraft to systematically build maps of wave propagation parameters as a function of position. We determine probability distributions of wave vector angle weighted by the wave intensity. The results show that wave vector directions of intense waves are close to a Gaussian-shaped peak centered on the local magnetic field line. The width of this peak is between 10 and 20 degrees. The cumulative percentage of oblique waves is below 10-15%. This result is especially significant for an important class of whistler-mode emissions of lower-band chorus at higher latitudes, well outside their source region, where a simple ray tracing model fails and another mechanism is necessary to keep the wave vectors close to the field-aligned direction. Key Points Lower-band whistler-mode waves influence the outer radiation belt 11 years of wave propagation data from Cluster are analyzed by new methods Wave vector directions of intense waves are mostly field-aligned ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84898729830&doi=10.1002%2f2014GL059815&partnerID=40&md5=46259fa001bf95b2a35256e437163c8e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7387
Appears in Collections: 气候减缓与适应
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作者单位: Institute of Atmospheric Physics AS CR, Prague, Czech Republic
Recommended Citation:
Santolík O.,Macúšová E.,Kolmašová I.,et al. Propagation of lower-band whistler-mode waves in the outer Van Allen belt: Systematic analysis of 11years of multi-component data from the Cluster spacecraft[J]. Geophysical Research Letters,2014-01-01,41(8).