William H. Matthaeus

TL;DR: A theoretical model of spectral transfer for anisotropic magnetohydrodynamic turbulence is introduced, approximating energy transport in wave vector space as a nonlinear diffusion process, extending previous isotropic k -space diffusion theories for hydrodynamics and MHD.

TL;DR: In this article, a new approach for estimating the age of solar wind turbulence as a function of heliocentric distance was proposed, using the local turbulent decay rate as the natural dock, but taking into account expansion and driving effects.

TL;DR: In this article, the authors show that RMHD is properly neither 2D nor fully 3D, being rather an incomplete representation that enforces at least one family of extraneous conservation laws.

TL;DR: In this paper, the authors studied the role of the heliospheric current sheet (CS) and small-scale magnetic islands (SMIs) in the formation of large magnetic cavities, bordered by strong CSs, which in turn produce secondary CSs and dynamical SMIs.

TL;DR: In this paper, the formation of coherent structures in turbulence is a signature of a developing cascade and therefore might be observable by analyzing inner heliospheric solar wind turbulence, and data from the Helios 2 mission, for six streams of solar wind at different heliocentric distances and of different velocities, were subjected to statistical analysis using the partial variance of increments approach.