The motion of the ocean
Causes of the currents
Causes of ocean currents include wind friction, gravity, variation, and water density and different parts of the ocean. two major factors that set ocean currents in motion are wind and variation and water density.
ENSO is an irregular periodical climate change cause by variations in sea surface temperatures over the tropical eastern Pacific Ocean, affecting much of the tropics and subtropics. The warming phase is known as EL Nino the cooling phase as LA Nina. The tropical pacific ocean and atmosphere move between warm, cool and neutral phases on a time scale of a few years. A typical El Nino or La Nina event may show its first signs of development during the southern hemisphere autumn and strengthen over winter and spring.
Studying Ocean Currets
There are three distinct approaches to studying currents. One is The Lagrangian Method, also called the float method. You can study the current by tracking a drifting object using this technique. The next one is the Eulerian Method, also known as the flow method. this technique helps us study the current by staying in one place and measuring the velocity of the water as it flows past. The third performance uses altimeter satellites. They use the satellites to measure the highs and lows of the sea surface. The satellites can produce more maps of ocean currents everywhere on the ocean surface.