JpGU-AGU Joint Meeting 2017

Presentation information

[EE] Oral

P (Space and Planetary Sciences) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM13] [EE] Exploring space plasma processes with Magnetospheric Multiscale (MMS) mission

Sat. May 20, 2017 3:30 PM - 5:00 PM 201A (International Conference Hall 2F)

convener:Hiroshi Hasegawa(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency), Thomas Earle Moore(NASA Goddard Space Flight Ctr), Benoit Lavraud(IRAP), Seiji Zenitani(NAOJ National Astronomical Observatory of Japan), Chairperson:Benoit Lavraud(IRAP, University of Toulouse)

3:45 PM - 4:00 PM

[PEM13-14] Asymmetry in mid-latitude reconnection site locations associated with the Kelvin-Helmholtz instability

*Yoann Vernisse1,2, Benoit Lavraud1,2, Stefan Eriksson3, Matteo Faganello4, Daniel J. Gershman5,6, John Dorelli5, Craig J Pollock5, Barbara Giles5, Nicolas Aunai7, Levon Avanov5,6, Jim Burch8, Michael Chandler9, Victoria Coffey9, Jérémy Dargent1,7, Robert Ergun3, Charlie Farrugia10, vincent genot1,2, Daniel Graham11, Hiroshi Hasegawa12, Christian Jacquey1,2, Issaad Kacem1,2, Yuri Khotyaintsev11, Wenya Li11, Werner Magnes13, Aurélie Marchaudon1,2, Thomas earle Moore5, William r Paterson5, Emmanuel Penou2,1, Tai Phan14, Alessandro Retino7, Christopher t Russell15, Yoshifumi Saito12, Jean-André Sauvaud1,2, Conrad Schiff5, Roy Torbert10, Frederick Wilder3, Shoichiro Yokota12 (1.Institut de Recherche en Astrophysique et Planétologie, Université Paul Sabatier, Toulouse, France, 2.Centre National de la Recherche Scientifique, France, 3.Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, Boulder, Colorado, USA, 4.Laboratoire de Physique des Interactions Ioniques et Moléculaires, Université Aix-Marseille, Marseille, France, 5.NASA Goddard Space Flight Center, Greenbelt, Maryland, USA, 6.Department of Astronomy, University of Maryland, College Park, Maryland, USA, 7.Laboratoire de Physique des Plasmas, Palaiseau, France, 8.Southwest Research Institute, San Antonio, Texas, USA, 9.NASA Marshall Space Flight Center, Huntsville, Alabama, USA, 10.Physics Department and Space Science Center, University of New Hampshire, Durham, New Hampshire, USA, 11.Swedish institute of Space Physics, Uppsala, Sweden, 12.Institute of Space and Astronautical Science, JAXA, Sagamihara, Japan, 13.Space Research Institute, Austrian Academy of Sciences, Graz, Austria, 14.Space Sciences Laboratory, Berkeley, California, USA, 15.Institute of Geophysics and Planetary Physics, and Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, California, USA)

Keywords:Kelvin-Helmholtz instability, mid-latitude reconnection, magnetospheric multiscale mission

On 08 September 2015, MMS observed a long duration Kelvin-Helmholtz instability at the dayside magnetopause near the terminator. Kinetic signatures of local reconnection have been observed, showing evidences of Type I reconnection associated with the Kelvin-Helmholtz waves. Remote observations, i.e., streaming hot electrons in the magnetosheath boundary layer, suggested that reconnection occurred at higher latitudes both above and below the KH development plane. A revised analysis shows that the electron signatures have a preferred directionality, suggesting a preference for mid-latitude reconnection occurring mostly southward of the KH development plane. We investigate this preference by means of the high resolution instruments of the MMS mission combined with MHD simulations and show potential relation between the magnetic field line tension and reconnection.