can be well understood using techniques from a generalized version of statistical mechanics,

so-called nonextensive statistical mechanics.

The following picture shows probability densities
of velocity differences as measured on
various scales in a

turbulent Taylor-Couette flow, and the theoretical predictions
of a model based on nonextensive statistical mechanics.

There is excellent agreement. Other theoretical
models for probability densities
in turbulent flows do not yield anything of similar precision.

The measurements were made by Greg Lewis and Harry Swinney
at the

Center for Nonlinear Dynamics, University of Texas at Austin.

More details can be found in the following references:

ps file available

ps file available

A recent article in the SCIENCE magazin (23 August 2002) also mentions this.