  Saturns rings are known to show remarkable real time variability in their
structure. Many of which can be associated to interactions with nearby moons
and moonlets. Possibly the most interesting and dynamic place in the rings,
probably in the whole Solar System, is the F ring. A highly disrupted ring with
large asymmetries both radially and azimuthally. Numerically non zero
components to the curl of the velocity vector field (vorticity) in the
perturbed area of the F ring post encounter are witnessed, significantly above
the background vorticity. Within the perturbed area rich distributions of local
rotations is seen located in and around the channel edges. The gravitational
scattering of ring particles during the encounter causes a significant elevated
curl of the vector field above the background F ring vorticity for the first
1-3 orbital periods post encounter. After 3 orbital periods vorticity reverts
quite quickly to near background levels. This new found dynamical vortex life
of the ring will be of great interest to planet and planetesimals in
proto-planetary disks where vortices and turbulence are suspected of having a
significant role in their formation and migrations. Additionally, it is found
that the immediate channel edges created by the close passage of Prometheus
actually show high radial dispersions in the order ~20-50 cm/s, up to a maximum
of 1 m/s. This is much greater than the value required by Toomre for a disk to
be unstable to the growth of axisymmetric oscillations. However, an area a few
hundred km away from the edge shows a more promising location for the growth of
coherent objects.
