globalchange  > 科学计划与规划
DOI: 10.1002/2016GL068968
Title:
Whistler mode waves and Hall fields detected by MMS during a dayside magnetopause crossing
Author: Contel O.L.; Retinò A.; Breuillard H.; Mirioni L.; Robert P.; Chasapis A.; Lavraud B.; Chust T.; Rezeau L.; Wilder F.D.; Graham D.B.; Argall M.R.; Gershman D.J.; Lindqvist P.-A.; Khotyaintsev Y.V.; Marklund G.; Ergun R.E.; Goodrich K.A.; Burch J.L.; Torbert R.B.; Needell J.; Chutter M.; Rau D.; Dors I.; Russell C.T.; Magnes W.; Strangeway R.J.; Bromund K.R.; Leinweber H.K.; Plaschke F.; Fischer D.; Anderson B.J.; Le G.; Moore T.E.; Pollock C.J.; Giles B.L.; Dorelli J.C.; Avanov L.; Saito Y.
Source Publication: Geophysical Research Letters
ISSN: 0094-9704
EISSN: 1944-9435
Publishing Year: 2016
Volume: 43, Issue:12
pages begin: 5943
pages end: 5952
Language: 英语
Keyword: Hall field ; magnetopause ; separatrix ; whistler waves
Scopus Keyword: Anisotropy ; Earth atmosphere ; Electric fields ; Electron scattering ; Electrons ; Ions ; Magnetic fields ; Magnetopause ; Magnetoplasma ; Magnetosphere ; Hall field ; Magnetopause crossings ; Magnetospheric multiscale missions ; Perpendicular anisotropy ; Separatrix ; Temperature anisotropy ; Whistler wave emission ; Whistler waves ; Atmospherics
English Abstract: We present Magnetospheric Multiscale (MMS) mission measurements during a full magnetopause crossing associated with an enhanced southward ion flow. A quasi-steady magnetospheric whistler mode wave emission propagating toward the reconnection region with quasi-parallel and oblique wave angles is detected just before the opening of the magnetic field lines and the detection of escaping energetic electrons. Its source is likely the perpendicular temperature anisotropy of magnetospheric energetic electrons. In this region, perpendicular and parallel currents as well as the Hall electric field are calculated and found to be consistent with the decoupling of ions from the magnetic field and the crossing of a magnetospheric separatrix region. On the magnetosheath side, Hall electric fields are found smaller as the density is larger but still consistent with the decoupling of ions. Intense quasi-parallel whistler wave emissions are detected propagating both toward and away from the reconnection region in association with a perpendicular anisotropy of the high-energy part of the magnetosheath electron population and a strong perpendicular current, which suggests that in addition to the electron diffusion region, magnetosheath separatrices could be a source region for whistler waves. ©2016. American Geophysical Union. All Rights Reserved.
Related Link: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84983249271&doi=10.1002%2f2016GL068968&partnerID=40&md5=87e373515c3474f10887c3dbd007fa17
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Document Type: 期刊论文
Identifier: http://119.78.100.158/handle/2HF3EXSE/10667
Appears in Collections:科学计划与规划
气候变化与战略

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Affiliation: Laboratoire de Physique des Plasmas (LPP), UMR7648 CNRS/Ecole Polytechnique/UPMC/Université Paris-Sud/Observatoire de Paris, Palaiseau, France

Recommended Citation:
Contel O.L.,Retinò A.,Breuillard H.,et al. Whistler mode waves and Hall fields detected by MMS during a dayside magnetopause crossing[J]. Geophysical Research Letters,2016-01-01,43(12).
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