气候变化领域集成服务门户(CCPortal): Statistical Properties of Magnetic Structures and Energy Dissipation during Turbulent Reconnection in the Earth's Magnetotail

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DOI	10.1029/2020GL088540
	Statistical Properties of Magnetic Structures and Energy Dissipation during Turbulent Reconnection in the Earth's Magnetotail
	Bergstedt K.; Ji H.; Jara-Almonte J.; Yoo J.; Ergun R.E.; Chen L.-J.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:19
英文摘要	We present the first statistical study of magnetic structures and associated energy dissipation observed during a single period of turbulent magnetic reconnection, by using the in situ measurements of the Magnetospheric Multiscale mission in the Earth's magnetotail on 26 July 2017. The structures are selected by identifying a bipolar signature in the magnetic field and categorized as plasmoids or current sheets via an automated algorithm which examines current density and plasma flow. The size of the plasmoids forms a decaying exponential distribution ranging from subelectron up to ion scales. The presence of substantial number of current sheets is consistent with a physical picture of dynamic production and merging of plasmoids during turbulent reconnection. The magnetic structures are locations of significant energy dissipation via electric field parallel to the local magnetic field, while dissipation via perpendicular electric field dominates outside of the structures. Significant energy also returns from particles to fields. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Electric fields; Energy dissipation; Magnetic fields; Magnetic structure; Magnetosphere; Automated algorithms; Earth's magnetotail; Exponential distributions; In-situ measurement; Local magnetic field; Magnetospheric multiscale missions; Statistical properties; Turbulent magnetic reconnections; Magnetoplasma; algorithm; Earth; electric field; energy dissipation; magnetic method; magnetotail; 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/169654
作者单位	Department of Astrophysical Sciences, Princeton University, Princeton, NJ, United States; Princeton Plasma Physics Laboratory, Princeton, NJ, United States; Department of Astrophysical and Planetary Sciences, University of Colorado Boulder, Boulder, CO, United States; Laboratory of Atmospheric and Space Sciences, University of Colorado Boulder, Boulder, CO, United States; NASA, Goddard Space Flight Center, Greenbelt, MD, United States
推荐引用方式 GB/T 7714	Bergstedt K.,Ji H.,Jara-Almonte J.,et al. Statistical Properties of Magnetic Structures and Energy Dissipation during Turbulent Reconnection in the Earth's Magnetotail[J],2020,47(19).
APA	Bergstedt K.,Ji H.,Jara-Almonte J.,Yoo J.,Ergun R.E.,&Chen L.-J..(2020).Statistical Properties of Magnetic Structures and Energy Dissipation during Turbulent Reconnection in the Earth's Magnetotail.Geophysical Research Letters,47(19).
MLA	Bergstedt K.,et al."Statistical Properties of Magnetic Structures and Energy Dissipation during Turbulent Reconnection in the Earth's Magnetotail".Geophysical Research Letters 47.19(2020).