▪ Abstract Turbulence affects the structure and motions of nearly all temperature and density
regimes in the interstellar gas. This two-part review summarizes the observations, theory …

We review statistical analyses of Lagrangian data from the ocean. These can be grouped
into studies involving single particles and those with pairs or groups of particles. Single …

A procedure is presented to detect eddy cores from sea level anomaly (SLA) maps obtained
from altimetric measurements. The method is based on finding the sign of Q, which is an …

The presence of coherent vortices makes observed mesoscale fields of the ocean resemble
two-dimensional turbulence. Using this analogy, a common definition of a coherent structure …

Transport and mixing properties of surface currents can be detected from altimetric data by
both Eulerian and Lagrangian diagnostics. In contrast with Eulerian diagnostics, Lagrangian …

Three Algerian eddies (open sea big anticyclonic eddies in the Algerian basin, western
Mediterranean sea) are studied in detail using altimetric and in situ data. To characterize …

Coexistence of competitive species is severely limited by the availability of resources and
the characteristics of the environment. In particular, the so–called–competitive exclusion …

We investigate the performance of standard stochastic models of single-particle dispersion
in two-dimensional turbulence. Owing to the presence of coherent vortices, particle …

The formation of vortices in protoplanetary disks is explored via pseudospectral numerical
simulations of an anelastic-gas model. This model is a coupled set of equations for vorticity …

We study the evolution of vortex statistics in freely decaying two-dimensional turbulence at
very large Reynolds number. The results obtained here confirm that the peak vorticity inside …