A linear stability problem is formulated to investigate the effect of turbu
lence on double-diffusively driven thermohaline interleaving in rotating me
dia. Three cases are considered: (a) intrusions with an alongfront slope in
rotating media, (b) intrusions with zero alongfront slope in nonrotating m
edia, (c) intrusions with zero alongfront slope, where the Coriolis force i
s retained. The physical reason for case c is that the large-scale vertical
geostrophic shear in baroclinic fronts will rotate any intrusion with nonz
ero alongfront slope as long as the alongfront slope vanishes. In all three
cases, turbulence works to suppress interleaving so that the growth rate o
f the fastest growing intrusion decreases with the increase of turbulent di
ffusivity k*. However, in cases a and b the growing intrusions exist for an
y finite value of k*, while in case c there is a marginal (maximum) value o
f k* beyond which growing intrusions do not exist.