ocean currents that occur at or near the surface of the ocean, caused by wind. affected by 3 factors; continental deflections, the coriolis effect, and global winds.
causes currents in open water to move in a curved path rather than a straight path. due to Earth's rotation
when surface currents meet continents, the currents are deflected and change direction. In the Northern Hemisphere, currents are deflected to the right. In the Southern Hemisphere, currents are deflected to the left.
causes cold, nutrient rich water's to move up to the Earth's surface. extremely important to ocean life.
how sun provides energy for surface currents
sun heats air, pressure differences form, because of differences in heating, wind forms and causes this type of current.
movements of ocean water far below the surface. they form from where the density of ocean water increases.. density is affected by salinity.
movement of water that results from density differences. these currents can be vertical, circular, or cyclical. like a conveyor belt. deep currents make up the bottom part.