气候变化领域集成服务门户(CCPortal): Electron Inflow Velocities and Reconnection Rates at Earth's Magnetopause and Magnetosheath

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DOI	10.1029/2020GL089082
	Electron Inflow Velocities and Reconnection Rates at Earth's Magnetopause and Magnetosheath
	Burch J.L.; Webster J.M.; Hesse M.; Genestreti K.J.; Denton R.E.; Phan T.D.; Hasegawa H.; Cassak P.A.; Torbert R.B.; Giles B.L.; Gershman D.J.; Ergun R.E.; Russell C.T.; Strangeway R.J.; Le Contel O.; Pritchard K.R.; Marshall A.T.; Hwang K.-J.; Dokgo K.; Fuselier S.A.; Chen L.-J.; Wang S.; Swisdak M.; Drake J.F.; Argall M.R.; Trattner K.J.; Yamada M.; Paschmann G.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:17
英文摘要	Electron inflow and outflow velocities during magnetic reconnection at and near the dayside magnetopause are measured using satellites from NASA's Magnetospheric Multiscale (MMS) mission. A case study is examined in detail, and three other events with similar behavior are shown, with one of them being a recently published electron-only reconnection event in the magnetosheath. The measured inflow speeds of 200–400 km/s imply dimensionless reconnection rates of 0.05–0.25 when normalized to the relevant electron Alfvén speed, which are within the range of expectations. The outflow speeds are about 1.5–3 times the inflow speeds, which is consistent with theoretical predictions of the aspect ratio of the inner electron diffusion region. A reconnection rate of 0.04 ± 25% was obtained for the case study event using the reconnection electric field as compared to the 0.12 ± 20% rate determined from the inflow velocity. ©2020. The Authors.
英文关键词	Aspect ratio; Electric fields; Magnetopause; NASA; Electron diffusion; Inflow velocity; Magnetic reconnections; Magnetosheaths; Magnetospheric multiscale missions; Outflow velocities; Reconnection rate; Electrons; electric field; electromagnetic method; electron; flow velocity; magnetopause; satellite mission
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/169801
作者单位	Space Science and Engineering Division, Southwest Research Institute, San Antonio, TX, United States; Department of Physics and Astronomy, Rice University, Houston, TX, United States; Department of Physics and Technology, University of Bergen, Bergen, Norway; Department of Physics and Astronomy, Dartmouth College, Hanover, NH, United States; Space Sciences Laboratory, University of California, Berkeley, CA, United States; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan; Department of Physics and Astronomy, West Virginia University, Morgantown, WV, United States; Physics Department and Space Science Center, University of New Hampshire, Durham, NH, United States; NASA, Goddard Space Flight Center, Greenbelt, MD, United States; Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, Boulder, CO, United States; Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, CA, United States; Laboratoire de Ph...
推荐引用方式 GB/T 7714	Burch J.L.,Webster J.M.,Hesse M.,et al. Electron Inflow Velocities and Reconnection Rates at Earth's Magnetopause and Magnetosheath[J],2020,47(17).
APA	Burch J.L..,Webster J.M..,Hesse M..,Genestreti K.J..,Denton R.E..,...&Paschmann G..(2020).Electron Inflow Velocities and Reconnection Rates at Earth's Magnetopause and Magnetosheath.Geophysical Research Letters,47(17).
MLA	Burch J.L.,et al."Electron Inflow Velocities and Reconnection Rates at Earth's Magnetopause and Magnetosheath".Geophysical Research Letters 47.17(2020).