Describe the circulation of deep ocean water.no

I am going to take a stab at this and assume you meant to
write "deep ocean water."  As it says in the article referenced below, "deep ocean
currents are the result of sinking and upwelling water, and termohaline ( href="../../uxl-science-encyclopedia/temperature">temperature and salinity)
differences."

Not a great deal is currently known about
these deep ocean currents and they are being researched by a number of robotic
submarines to try and get more of an understanding of
them.

They are sometimes referred to as "submarine rivers"
and they flow according to changes in density and temperature rather than according to
wind and other conditions that drive currents closer to the surface.  Once water sinks
low enough, the pressure and other factors can actually cause density to increase which
again, contributes to how that water will then move around deep below the
surface.

Generally deep ocean currents are classified as
those below the firs 400m of water.