globalchange  > 气候减缓与适应
DOI: 10.1002/2017JA024537
Scopus ID: 2-s2.0-85043268935
Magnetic Reconnection at a Thin Current Sheet Separating Two Interlaced Flux Tubes at the Earth's Magnetopause
Author: Kacem I.; Jacquey C.; Génot V.; Lavraud B.; Vernisse Y.; Marchaudon A.; Le Contel O.; Breuillard H.; Phan T.D.; Hasegawa H.; Oka M.; Trattner K.J.; Farrugia C.J.; Paulson K.; Eastwood J.P.; Fuselier S.A.; Turner D.; Eriksson S.; Wilder F.; Russell C.T.; Øieroset M.; Burch J.; Graham D.B.; Sauvaud J.-A.; Avanov L.; Chandler M.; Coffey V.; Dorelli J.; Gershman D.J.; Giles B.L.; Moore T.E.; Saito Y.; Chen L.-J.; Penou E.
Source Publication: Journal of Geophysical Research: Space Physics
ISSN: 21699380
Publishing Year: 2018
Volume: 123, Issue:3
pages begin: 1779
pages end: 1793
Language: 英语
Keyword: flux transfer event ; interlaced flux tubes ; magnetic reconnection ; magnetopause ; thin current sheet
English Abstract: The occurrence of spatially and temporally variable reconnection at the Earth's magnetopause leads to the complex interaction of magnetic fields from the magnetosphere and magnetosheath. Flux transfer events (FTEs) constitute one such type of interaction. Their main characteristics are (1) an enhanced core magnetic field magnitude and (2) a bipolar magnetic field signature in the component normal to the magnetopause, reminiscent of a large-scale helicoidal flux tube magnetic configuration. However, other geometrical configurations which do not fit this classical picture have also been observed. Using high-resolution measurements from the Magnetospheric Multiscale mission, we investigate an event in the vicinity of the Earth's magnetopause on 7 November 2015. Despite signatures that, at first glance, appear consistent with a classic FTE, based on detailed geometrical and dynamical analyses as well as on topological signatures revealed by suprathermal electron properties, we demonstrate that this event is not consistent with a single, homogenous helicoidal structure. Our analysis rather suggests that it consists of the interaction of two separate sets of magnetic field lines with different connectivities. This complex three-dimensional interaction constructively conspires to produce signatures partially consistent with that of an FTE. We also show that, at the interface between the two sets of field lines, where the observed magnetic pileup occurs, a thin and strong current sheet forms with a large ion jet, which may be consistent with magnetic flux dissipation through magnetic reconnection in the interaction region. ©2018. American Geophysical Union. All Rights Reserved.
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被引频次[WOS]:11   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Appears in Collections:气候减缓与适应

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Affiliation: Institut de Recherche en Astrophysique et Planétologie, CNRS, UPS, CNES, Université de Toulouse, Toulouse, France; Laboratoire de Physique des Plasmas, Palaiseau, France; Space Sciences Laboratory, University of California, Berkeley, CA, United States; Institute of Space and Astronautical Science, JAXA, Sagamihara, Japan; Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, Boulder, CO, United States; Physics Department and Space Science Center, University of New Hamsphire DurhamNH, United States; The Blackett Laboratory, Department of physics, Imperial College London, London, United Kingdom; Southwest Research Institute, San Antonio, TX, United States; Department of Physics, University of Texas at San Antonio, San Antonio, TX, United States; Space Sciences Department, The Aerospace Corporation, El Segundo, CA, United States; Institute of Geophysics, Earth, Planetary, and Space Sciences, University of California, Los Angeles, CA, United States; Swedish Institute of Space Physics, Uppsala, Sweden; NASA Goddard Space Flight Center, Greenbelt, MD, United States; NASA Marshall Space Flight Center, Huntsville, AL, United States

Recommended Citation:
Kacem I.,Jacquey C.,Génot V.,et al. Magnetic Reconnection at a Thin Current Sheet Separating Two Interlaced Flux Tubes at the Earth's Magnetopause[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(3)
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