Answer:Thermohaline circulation
Explanation: Because the ocean consists of warm, less salty water along the surface of the water, and cooler, saltier water deep below the ocean , Thermohaline circulation occurs which is the term used to control the differences in temperature and salinity of the ocean body where the circulation continually replaces seawater, it involves warm, less salty water moving along the surface of the water, and cooler, saltier water moving deep beneath the ocean.
Effects of the factors such as salinity and temperature on movement of sea water.
High temperatures give rise to warmer water and thus can hold more salt than low temperatures leading to cold water having lower salinity. the higher the salinity of ocean water, the more dense it becomes making it difficult to move and so the water will sink to form convection current causing the cold with low salinity water to come above the warm water with high salinity and making ease of movement of seawater possible.
