Japan Geoscience Union Meeting 2014

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International Session (Oral)

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

[P-EM10_29PM1] Wave, Turbulence, Reconnection, and Energetic Particles in Solar, Space and Laboratory

Tue. Apr 29, 2014 2:15 PM - 4:00 PM 414 (4F)

Convener:*Huirong Yan(Kavli Institute of Astronomy & Astrophysics), Takeru Suzuki(Department of Physics, School of Science, Nagoya University), Alex Lazarian(University of Wisconsin-Madison), Chair:Huirong Yan(Kavli Institute of Astronomy & Astrophysics)

2:15 PM - 2:35 PM

★ [PEM10-01] Modeling Turbulence in Space Plasmas

*Jungyeon CHO1 (1.Chungnam National University)

Keywords:turbulence, MHD, waves, magnetic field

Space plasmas are magnetized and in turbulent states. I will briefly introduce properties of turbulence in a strongly magnetized medium. Turbulence in space plasmas is involved with various length scales. In general, different descriptions should be used for different scales. On large scales, plasma turbulence can be described in the framework of magnetohydrodynamics (MHD). In the first par of the talk, I will focus on MHD turbulence in the presence of a strong mean field. I will discuss energy cascade and structure of turbulence in this regime. On the other hand, on small scales near the proton gyro-scale, we cannot use MHD. In the second part of the talk, I will discuss how we can treat magnetized turbulence on small scales. I will also discuss properties and scaling relations of waves and turbulence in this regime.