what are the main reasons behind formation of ocean current ?
Answers
✔Ocean currents can be generated by wind, density differences in water masses caused by temperature and salinity variations, gravity, and events such as earthquakes. Currents are cohesive streams of seawater that circulate through the ocean.
The density of sea water depends both upon its temperature and upon its salinity and, since these vary from place to place, the density also varies and gives rise to currents. These density currents are not independent of winds, however, because the wind-induced currents themselves alter the density distributions. Similarly, if warm water is driven from low latitudes into higher latitudes it will be cooled, and thus a limit is set on the differences of density which can be attained. The positions of the land masses and the shape and depths of the ocean basins also affect the currents.