globalchange  > 气候减缓与适应
DOI: 10.1002/2017JA025034
Scopus ID: 2-s2.0-85045218412
Title:
Large-Amplitude High-Frequency Waves at Earth's Magnetopause
Author: Graham D.B.; Vaivads A.; Khotyaintsev Y.V.; André M.; LeContel O.; Malaspina D.M.; Lindqvist P.-A.; Wilder F.D.; Ergun R.E.; Gershman D.J.; Giles B.L.; Magnes W.; Russell C.T.; Burch J.L.; Torbert R.B.
Source Publication: Journal of Geophysical Research: Space Physics
ISSN: 21699380
Publishing Year: 2018
Volume: 123, Issue:4
pages begin: 2630
pages end: 2657
Language: 英语
Keyword: magnetopause ; plasma waves
English Abstract: Large-amplitude waves near the electron plasma frequency are found by the Magnetospheric Multiscale (MMS) mission near Earth's magnetopause. The waves are identified as Langmuir and upper hybrid (UH) waves, with wave vectors either close to parallel or close to perpendicular to the background magnetic field. The waves are found all along the magnetopause equatorial plane, including both flanks and close to the subsolar point. The waves reach very large amplitudes, up to 1 V m−1, and are thus among the most intense electric fields observed at Earth's magnetopause. In the magnetosphere and on the magnetospheric side of the magnetopause the waves are predominantly UH waves although Langmuir waves are also found. When the plasma is very weakly magnetized only Langmuir waves are likely to be found. Both Langmuir and UH waves are shown to have electromagnetic components, which are consistent with predictions from kinetic wave theory. These results show that the magnetopause and magnetosphere are often unstable to intense wave activity near the electron plasma frequency. These waves provide a possible source of radio emission at the magnetopause. ©2018. American Geophysical Union. All Rights Reserved.
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被引频次[WOS]:12   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Identifier: http://119.78.100.158/handle/2HF3EXSE/114146
Appears in Collections:气候减缓与适应

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Affiliation: Swedish Institute of Space Physics, Uppsala, Sweden; Laboratoire de Physique des Plasmas (LPP), UMR7648, CNRS, Ecole Polytechnique, UPMC University Paris 06, University Paris-Sud, Observatoire de Paris, Paris, France; Laboratory of Atmospheric and Space Physics, University of Colorado Boulder, Boulder, CO, United States; Space and Plasma Physics, School of Electrical Engineering, KTH Royal Institute of Technology, Stockholm, Sweden; NASA Goddard Space Flight Center, Greenbelt, MD, United States; Department of Astronomy, University of Maryland, College Park, MD, United States; Space Research Institute, Austrian Academy of Sciences, Graz, Austria; Department of Earth and Space Sciences, University of California, Los Angeles, CA, United States; Southwest Research Institute, San Antonio, TX, United States; Space Science Center, University of New Hampshire, Durham, NH, United States

Recommended Citation:
Graham D.B.,Vaivads A.,Khotyaintsev Y.V.,et al. Large-Amplitude High-Frequency Waves at Earth's Magnetopause[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(4)
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