GEOLOGY

Detailed explanation-1: -Ocean currents can be caused by wind, density differences in water masses caused by temperature and salinity variations, gravity, and events such as earthquakes or storms. Currents are cohesive streams of seawater that circulate through the ocean.

Detailed explanation-2: -Ocean currents are set in motion primarily by prevailing winds.

Detailed explanation-3: -The movement of ocean waters or ocean currents takes place due to the effect of earth’s rotation, wind difference, salinity and density of seawater, etc. The current in the ocean is originated due to the combined effect of all these factors acting internally as well as externally.

Detailed explanation-4: -OCEAN CURRENTS The primary forces that influence the currents are: (i) heating by solar energy; (ii) wind; (iii) gravity; (iv) coriolis force. Heating by solar energy causes the water to expand. That is why, near the equator the ocean water is about 8 cm higher in level than in the middle latitudes.

Detailed explanation-5: -There are five major ocean-wide gyres-the North Atlantic, South Atlantic, North Pacific, South Pacific, and Indian Ocean gyres. Each is flanked by a strong and narrow “western boundary current, ” and a weak and broad “eastern boundary current” (Ross, 1995).