These deep-ocean currents are driven by differences in the water’s density, which is controlled by temperature (thermo) and salinity (haline). This process is known as thermohaline circulation. … Surface water is pulled in to replace the sinking water, which in turn eventually becomes cold and salty enough to sink.

What is the cause of deep water circulation?

Deep ocean currents (also known as Thermohaline Circulation) are caused by: … The sinking and transport of large masses of cool water gives rise to the thermohaline circulation, which is driven by density gradients due to variations in temperature and salinity.

What two factors cause deep ocean currents?

Deep currents are driven by temperature and water density/salinity. Of course, deep currents impact surface currents, which carry warm water to the poles. Surface currents are also driven by global wind systems fueled by energy from the sun. Factors like wind direction and the Coriolis effect play a role.