what is a surface ocean current
any continuous flow of water along a definite path in the ocean
surface ocean currents are driven by...
west hemisphere has....
east hemisphere has....
south has winds moving...
two factors that affect wind and ocean currents
uneven heating of earths surface, and insulation (solar heating)
how deep does sunlight heat the ocean
10-15 ft (100mm)
ocean is layered by what...
describe the mixed later
heated by the sun, mixed by waves and wind with uniform temp.
describe the thermocline layer
layerd of rapid temperature change
describe the pelagic layer
cold layer all around the globe
layer where most life exists
strong trade wings blow e-w, cool water near south america, warm water near australia, upwelling in eastern pacific brings nutrient rich deep waters to the surface
el nino conditions
trade winds weaken or reverse, warm water near s.america, flooding near s.america, droughts in australia/indonesia, upwelling stops, fish die in s.america
la nina conditions
trade winds are very strong, very cold water near s.america, very warm water near australia
ENSO, el nino southern oscillation
el nino and la nina events together
why does ice float
separated molecules so it's less dense
what does thermohaline circulation describe
ocean currents based on temp and salinity
what winds are encountered at the horse latitudes
little or none
what are the currents that take 1000 years to make one trip around the world
deep ocean currents
what is the coriolis effect
the tendency of an object o veer from its path