Earth Planets Space, Vol. 57 (No. 6), pp. e9-e12, 2005

Self-generation of phase coherence in parallel Alfvén turbulence

Y. Nariyuki and T. Hada

E. S. S. T., Kyushu University, Japan

(Received April 5, 2005; Revised May 31, 2005; Accepted June 2, 2005)

Abstract: Nonlinear evolution of Alfvén turbulence is discussed within the framework of the derivative nonlinear Schroedinger equation (DNLS), a subset of the hall-MHD equation set, which includes quasi-parallel propagating right- and left-hand polarized Alfvén wave modes. By numerically time integrating the equation with periodic boundary conditions, we discuss relationship between generation of wave phase coherence and self-organization of the system due to birth of Alfvén solitons.
Key words: Alfvén waves, turbulence, complex system.