Transverse Shocks in the Turbulent Gluon Plasma Produced in   Ultra-Relativistic A+A
  Mini-jet production in ultra-relativistic nuclear collisions leads to initial conditions characterized by large fluctuations of the local energy density (hot spots) and of the collective flow field (turbulence). Assuming that local equilibrium is reached on a small time scale, $\sim 0.5$ fm/c, the transverse evolution of those initial conditions is computed using hydrodynamics. We find that a new class of collective flow phenomena (hadronic volcanoes) could arise under such conditions. This could be observable via enhanced azimuthal fluctuations of the transverse energy flow, $d^2E_\perp/d\phi dy$. 
M. Gyulassy, D.H. Rischke, and B. Zhang