  Chaotic and turbulent dispersion of passive heavy inertial particles in
homogeneous two-dimensional turbulence with Ekman drag has been studied using
notions of the effective diffusivity and distributed chaos. Results of recent
direct numerical simulations have been used for this purpose. Effect of the
Stokes number value on the applicability of these notions to the dispersion of
passive heavy inertial particles has been briefly discussed.
