Explanation:

Thermohaline circulation, also called Global Ocean Conveyor or Great Ocean Conveyor Belt, the component of general oceanic circulation controlled by horizontal differences in temperature and salinity. It continually replaces seawater at depth with water from the surface and slowly replaces surface water elsewhere with water rising from deeper depths. Although this process is relatively slow, tremendous volumes of water are moved, which transport heat, nutrients, solids, and other materials vast distances. Thermohaline circulation also drives warmer surface waters poleward from the subtropics, which moderates the climate of Iceland and other coastal areas of Europe.
• The general circulation of the oceans consists primarily of wind-driven ocean currents. These, however, are superimposed on the much more sluggish circulation driven by horizontal differences in temperature and salinity—namely, thermohaline circulation. Wind-driven circulation, which is strongest in the surface
layer of the ocean, is the more vigorous of the two and is configured as large gyres that dominate an ocean
region. In contrast, thermohaline circulation is much slower, with a typical speed of 1 centimetre (0.4
inch) per second, but this flow extends to the seafloor and forms circulation patterns that envelop the
global ocean.