Japan Geoscience Union Meeting 2016

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Poster

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

[P-EM17] Space Plasma Physics: Theory and Simulation

Tue. May 24, 2016 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall HALL6)

Convener:*Takayuki Umeda(Institute for Space-Earth Environmental Research, Nagoya University), Takanobu Amano(Department of Earth and Planetary Science, University of Tokyo), Yasuhiro Nariyuki(Faculty of Human Development, University of Toyama), Tadas Nakamura(Fukui Prefectural University), Tooru Sugiyama(Japan Agency for Marine-Earth Science and Technology Center for Earth Information Science and Technology)

5:15 PM - 6:30 PM

[PEM17-P01] On the kinetic nature of Dipolarization fronts

*Haoyu Lu

Keywords:dipolarization fronts, interchange instability, Hall effect, FLR effect, simulation

A non-ideal MHD model including Hall and finite Larmor radius (FLR) effects was used to reproduce the dipolarization fronts(DFs) produced by the interchange instability in the magnetotail. Numerical results indicate that Hall effect on the scale of inertial length determines the distributions of electric field and its ingredients at DFs. The inclusion of FLR effect would cause a clear asymmetry and dawnward drifting of the DF structure, which is attributed to the ion diamagnetic velocity. In addition, it also causes to alter the direction of the high-speed flow nearby the DF.