气候变化领域集成服务门户(CCPortal): Parallel Electrostatic Waves Associated With Turbulent Plasma Mixing in the Kelvin-Helmholtz Instability

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DOI	10.1029/2020GL087837
	Parallel Electrostatic Waves Associated With Turbulent Plasma Mixing in the Kelvin-Helmholtz Instability
	Wilder F.D.; Schwartz S.J.; Ergun R.E.; Eriksson S.; Ahmadi N.; Chasapis A.; Newman D.L.; Burch J.L.; Torbert R.B.; Strangeway R.J.; Giles B.L.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:14
英文摘要	The Kelvin-Helmholtz Instability (KHI) is thought to be an important driver of mass and momentum transfer from the solar wind to the Earth's magnetosphere. We present observations from NASA's Magnetospheric Multiscale mission of ion acoustic-like waves associated with turbulence during the KHI interval on 8 September 2015. These parallel electrostatic waves are nonlinear, can have amplitudes in excess of 100 mV/m, and may be associated with a field-aligned potential drop. We perform a survey of all vortices in the 8 September 2015 event, investigating the occurrence of electrostatic waves below the ion plasma frequency. We find that they tend to occur in the turbulent region in the middle of the KHI vortices, independent of the presence of compressed or intermittent currents. This suggests that the waves occur in the presence of plasma mixing in the vortex region and that they may play a part in the overall turbulent dissipation process. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Electrostatics; Magnetosphere; Mixing; NASA; Plasma stability; Plasma turbulence; Vortex flow; Earth's magnetosphere; Electrostatic waves; Ion plasma frequency; Kelvin-helmholtz instabilities; Magnetospheric multiscale missions; Mass and momentum transfers; Turbulent dissipation; Turbulent plasmas; Plasma diagnostics; Kelvin-Helmholtz instability; magnetosphere; mass transfer; momentum transfer; plasma; solar wind; turbulence
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/170089
作者单位	Laboratory of Atmospheric and Space Physics, University of Colorado Boulder, Boulder, CO, United States; Department of Astrophysical and Planetary Sciences, University of Colorado Boulder, Boulder, CO, United States; Department of Physics, University of Colorado Boulder, Boulder, CO, United States; Southwest Research Institute, San Antonio, TX, United States; Department of Physics, University of New Hampshire, Durham, NH, United States; Department of Earth, Planetary and Space Sciences, University of California, Los Angeles, CA, United States; NASA Goddard Space Flight Center, Greenbelt, MD, United States
推荐引用方式 GB/T 7714	Wilder F.D.,Schwartz S.J.,Ergun R.E.,et al. Parallel Electrostatic Waves Associated With Turbulent Plasma Mixing in the Kelvin-Helmholtz Instability[J],2020,47(14).
APA	Wilder F.D..,Schwartz S.J..,Ergun R.E..,Eriksson S..,Ahmadi N..,...&Giles B.L..(2020).Parallel Electrostatic Waves Associated With Turbulent Plasma Mixing in the Kelvin-Helmholtz Instability.Geophysical Research Letters,47(14).
MLA	Wilder F.D.,et al."Parallel Electrostatic Waves Associated With Turbulent Plasma Mixing in the Kelvin-Helmholtz Instability".Geophysical Research Letters 47.14(2020).