气候变化领域集成服务门户(CCPortal): Lower Hybrid Drift Waves During Guide Field Reconnection

CCPortal

DOI	10.1029/2020GL087192
	Lower Hybrid Drift Waves During Guide Field Reconnection
	Yoo J.; Ji J.-Y.; Ambat M.V.; Wang S.; Ji H.; Lo J.; Li B.; Ren Y.; Jara-Almonte J.; Chen L.-J.; Fox W.; Yamada M.; Alt A.; Goodman A.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:21
英文摘要	Generation and propagation of lower hybrid drift wave (LHDW) near the electron diffusion region (EDR) during guide field reconnection at the magnetopause is studied with data from the Magnetospheric Multiscale mission and a theoretical model. Inside the current sheet, the electron beta (βe) determines which type of LHDW is excited. Inside the EDR, where the electron beta is high (βe ∼ 5), the long-wavelength electromagnetic LHDW is observed propagating obliquely to the local magnetic field. In contrast, the short-wavelength electrostatic LHDW, propagating nearly perpendicular to the magnetic field, is observed slightly away from the EDR, where βe is small (∼0.6). These observed LHDW features are explained by a local theoretical model, including effects from the electron temperature anisotropy, finite electron heat flux, electrostatics, and parallel current. The short-wavelength LHDW is capable of generating significant drag force between electrons and ions. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Drag; Electrons; Electrostatics; Heat flux; Magnetic fields; Magnetosphere; Plasma confinement; Plasma waves; Electron diffusion; Electron heat flux; Electron temperature anisotropy; Local magnetic field; Magnetospheric multiscale missions; Parallel currents; Short wavelengths; Theoretical modeling; Electron temperature; electrochemistry; electromagnetic wave; electron; heat flux; magnetopause; magnetosphere; temperature profile; wave propagation; wavelength
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/169481
作者单位	Princeton Plasma Physics Laboratory, Princeton, NJ, United States; Department of Physics, Utah State University, Logan, UT, United States; Department of Mechanical Engineering, University of Rochester, Rochester, NY, United States; NASA Goddard Space Flight Center, Greenbelt, MD, United States; Department of Astrophysical Sciences, Princeton University, Princeton, NJ, United States; Department of Physics, Harbin Institute of Technology, Harbin, China
推荐引用方式 GB/T 7714	Yoo J.,Ji J.-Y.,Ambat M.V.,et al. Lower Hybrid Drift Waves During Guide Field Reconnection[J],2020,47(21).
APA	Yoo J..,Ji J.-Y..,Ambat M.V..,Wang S..,Ji H..,...&Goodman A..(2020).Lower Hybrid Drift Waves During Guide Field Reconnection.Geophysical Research Letters,47(21).
MLA	Yoo J.,et al."Lower Hybrid Drift Waves During Guide Field Reconnection".Geophysical Research Letters 47.21(2020).