globalchange  > 科学计划与规划
DOI: 10.1002/2016GL068783
Magnetospheric Multiscale observations of magnetic reconnection associated with Kelvin-Helmholtz waves
Author: Eriksson S.; Lavraud B.; Wilder F.D.; Stawarz J.E.; Giles B.L.; Burch J.L.; Baumjohann W.; Ergun R.E.; Lindqvist P.-A.; Magnes W.; Pollock C.J.; Russell C.T.; Saito Y.; Strangeway R.J.; Torbert R.B.; Gershman D.J.; Khotyaintsev Y.V.; Dorelli J.C.; Schwartz S.J.; Avanov L.; Grimes E.; Vernisse Y.; Sturner A.P.; Phan T.D.; Marklund G.T.; Moore T.E.; Paterson W.R.; Goodrich K.A.
Source Publication: Geophysical Research Letters
ISSN: 0094-8979
EISSN: 1944-8710
Publishing Year: 2016
Volume: 43, Issue:11
pages begin: 5606
pages end: 5615
Language: 英语
Keyword: guide-magnetic field reconnection ; Kelvin-Helmholtz waves ; reconnection exhaust
Scopus Keyword: Magnetism ; Magnetopause ; Magnetosphere ; Plasma density ; Spacecraft ; Guide magnetic field ; Kelvin-Helmholtz waves ; Magnetic reconnections ; Magnetopause current sheets ; Magnetospheric multi scale ; Mass and energy transport ; Pressure anisotropy ; reconnection exhaust ; Magnetoplasma
English Abstract: The four Magnetospheric Multiscale (MMS) spacecraft recorded the first direct evidence of reconnection exhausts associated with Kelvin-Helmholtz (KH) waves at the duskside magnetopause on 8 September 2015 which allows for local mass and energy transport across the flank magnetopause. Pressure anisotropy-weighted Walén analyses confirmed in-plane exhausts across 22 of 42 KH-related trailing magnetopause current sheets (CSs). Twenty-one jets were observed by all spacecraft, with small variations in ion velocity, along the same sunward or antisunward direction with nearly equal probability. One exhaust was only observed by the MMS-1,2 pair, while MMS-3,4 traversed a narrow CS (1.5 ion inertial length) in the vicinity of an electron diffusion region. The exhausts were locally 2-D planar in nature as MMS-1,2 observed almost identical signatures separated along the guide-field. Asymmetric magnetic and electric Hall fields are reported in agreement with a strong guide-field and a weak plasma density asymmetry across the magnetopause CS. ©2016. American Geophysical Union. All Rights Reserved.
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Document Type: 期刊论文
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Affiliation: Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, Boulder, CO, United States

Recommended Citation:
Eriksson S.,Lavraud B.,Wilder F.D.,et al. Magnetospheric Multiscale observations of magnetic reconnection associated with Kelvin-Helmholtz waves[J]. Geophysical Research Letters,2016-01-01,43(11).
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