DOI: 10.1002/2017JA025005
Scopus记录号: 2-s2.0-85044787823
论文题名: A Census of Plasma Waves and Structures Associated With an Injection Front in the Inner Magnetosphere
作者: Malaspina D.M. ; Ukhorskiy A. ; Chu X. ; Wygant J.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期: 4 起始页码: 2566
结束页码: 2587
语种: 英语
英文关键词: electron injection
; inner magnetosphere
; kinetic structures
; plasma boundaries
; plasma waves
; radiation belts
英文摘要: Now that observations have conclusively established that the inner magnetosphere is abundantly populated with kinetic electric field structures and nonlinear waves, attention has turned to quantifying the ability of these structures and waves to scatter and accelerate inner magnetospheric plasma populations. A necessary step in that quantification is determining the distribution of observed structure and wave properties (e.g., occurrence rates, amplitudes, and spatial scales). Kinetic structures and nonlinear waves have broadband signatures in frequency space, and consequently, high-resolution time domain electric and magnetic field data are required to uniquely identify such structures and waves as well as determine their properties. However, most high-resolution fields data are collected with a strong bias toward high-amplitude signals in a preselected frequency range, strongly biasing observations of structure and wave properties. In this study, an ∼45 min unbroken interval of 16,384 samples/s field burst data, encompassing an electron injection event, is examined. This data set enables an unbiased census of the kinetic structures and nonlinear waves driven by this electron injection, as well as determination of their “typical” properties. It is found that the properties determined using this unbiased burst data are considerably different than those inferred from amplitude-biased burst data, with significant implications for wave-particle interactions due to kinetic structures and nonlinear waves in the inner magnetosphere. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114120
Appears in Collections: 气候减缓与适应
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作者单位: Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, Boulder, CO, United States; Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States; Atmospheric & Oceanic Sciences, University of California, Los Angeles, CA, United States; School of Physics and Astronomy, University of Minnesota, Twin Cities, Minneapolis, MN, United States
Recommended Citation:
Malaspina D.M.,Ukhorskiy A.,Chu X.,et al. A Census of Plasma Waves and Structures Associated With an Injection Front in the Inner Magnetosphere[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(4)