Titlebook: Nonlinear MHD Waves and Turbulence; Proceedings of the W Thierry Passot,Pierre-Louis Sulem Conference proceedings 1999 Springer-Verlag Berl

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Reduced Models of Magnetohydrodynamic Turbulence in the Interstellar Medium and the Solar Wind,m of equations has been derived from the compressible magnetohydrodynamic (MHD) equations to describe turbulence in the interstellar medium and the solar wind. These equations apply to a plasma permeated by a spatially varying mean magnetic field when the plasma beta is of the order unity or less. I

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,Alfvénic Turbulence and Wave Propagation in the Corona and Heliosphere,adial gradients in determining the variation of amplitude with distance. Some comments on the role of photospheric vorticity as a source for Alfvén waves are presented, 1-D and 2-D MHD couplings of the waves as they climb out of the coronal density gradient are described (parametric decay, sound wav

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Coherent Electrostatic Nonlinear Waves in Collisionless Space Plasmas,ions, magnetotail, etc) from di)erent space experiments. One of the striking results obtained in the recent years is that these waves are basically electrostatic and coherent, in the form of solitary structures (weak double layers and solitary waves having respectively a net and no net potential dro

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ASSAY

Shell Models for MHD Turbulence,teractions, the paper focuses on the most recent results concerning dynamical properties and intermittency of a model which is a generalization to MHD of the Gledzer-Yamada-Okhitani (GOY) model for hydrodynamic. Applications to astrophysical problems are also discussed.

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Dynamics of Vortex and Magnetic Lines in Ideal Hydrodynamics and MHD,fluids it is shown that the equations of motion for vorticity and magnetic field with the help of this transformation follow from the variational principle. By means of this representation it is possible to integrate the system of hydrodynamic type with the Hamiltonian . = Ω.r. It is also demonstrat

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Conference proceedings 1999of experts in plasma physics, fluid dynamics and applied mathematics. The aim of the meeting was to survey the current knowledge on two main topics: (i) propagation of plasma waves (like Alfven, whistler or ion-acoustic waves), their instabilities and the development of a nonlinear dynamics lea­ din

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,On the Reflection of Alfvén Waves in the Inhomogeneous Solar Wind,nts. Particular attention is given to singularities of the wave equation in the presence of mean flow e.g. critical layers where the mean flow velocity equals the Alfvén speed, and localized wave reflection may occur, as well as other changes in wave properties.