气候变化领域集成服务门户(CCPortal): Observational Evidence for Solar Wind Proton Heating by Ion-Scale Turbulence

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DOI	10.1029/2020GL089720
	Observational Evidence for Solar Wind Proton Heating by Ion-Scale Turbulence
	Zhao G.Q.; Lin Y.; Wang X.Y.; Wu D.J.; Feng H.Q.; Liu Q.; Zhao A.; Li H.B.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:18
英文摘要	Based on in situ measurements by Wind spacecraft from 2005 to 2015, this letter reports for the first time a clearly scale-dependent connection between proton temperatures and the turbulence in the solar wind. A statistical analysis of proton-scale turbulence shows that increasing helicity magnitudes correspond to steeper magnetic energy spectra. In particular, there exists a positive power law correlation (with a slope ∼0.4) between the proton perpendicular temperature and the turbulent magnetic energy at scales (Formula presented.), with k being the wave number and ρp being the proton gyroradius. These findings present evidence of solar wind heating by the proton-scale turbulence. They also provide insight and observational constraint on the physics of turbulent dissipation in the solar wind. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Energy dissipation; Turbulence; Gyroradius; In-situ measurement; Magnetic energies; Power-law correlations; Proton temperatures; Turbulent dissipation; Wave numbers; Wind spacecraft; Solar wind; atmospheric wave; energy flux; heating; ion exchange; magnetic field; power law; solar wind; spacecraft; statistical analysis; 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/169755
作者单位	Institute of Space Physics, Luoyang Normal University, Luoyang, China; Henan Key Laboratory of Electromagnetic Transformation and Detection, Luoyang, China; Physics Department, Auburn University, Auburn, AL, United States; Purple Mountain Observatory, CAS, Nanjing, China
推荐引用方式 GB/T 7714	Zhao G.Q.,Lin Y.,Wang X.Y.,et al. Observational Evidence for Solar Wind Proton Heating by Ion-Scale Turbulence[J],2020,47(18).
APA	Zhao G.Q..,Lin Y..,Wang X.Y..,Wu D.J..,Feng H.Q..,...&Li H.B..(2020).Observational Evidence for Solar Wind Proton Heating by Ion-Scale Turbulence.Geophysical Research Letters,47(18).
MLA	Zhao G.Q.,et al."Observational Evidence for Solar Wind Proton Heating by Ion-Scale Turbulence".Geophysical Research Letters 47.18(2020).