ocean currents notes.notebook - unatego currents (2015).pdf · 2016-02-10 · ocean currents...
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Ocean Currents NOTES.notebook
1
February 10, 2016
Jan 271:19 PM
Ocean Currents
Jan 271:19 PM
Ocean Current
Large _________________ of moving water that flows throughthe ocean.
Carries water over ______________ distances.
Two types of currents:
• _____________________
• _____________________
stream
great
SurfaceDeep Water
Jan 271:19 PM
Surface Currents
Driven by _______________ ______________
Move in circular patterns called ______________
Circular patterns a result of the __________________
_______________
______________________ in the Northern Hemisphere
______________________ in the Southern Hemisphere
global windsgyres
CoriolisEffect
Clockwise
Counterclockwise
Jan 271:19 PM
Surface Currents
Five Gyres
1. ________________________________________
2. ________________________________________
3. ________________________________________
4. ________________________________________
5. ________________________________________
North AtlanticSouth AtlanticNorth Pacific
South PacificIndian Ocean
Jan 271:19 PM
Surface CurrentsEach gyre normally made up of _____________ currents4
Jan 271:19 PM
Western Intensification
Center of gyre tends to favor the ______________ boundarywestern
Ocean Currents NOTES.notebook
2
February 10, 2016
Jan 271:19 PM
Western Intensification
The western boundary of all gyres tend to be:
_____________________________________
_____________________________________
_____________________________________
_____________________________________
Currents run along _______________ coasts of land
Narrow (< 100 km)
Deep (~2 km)
Fast (100's of km/day)
Warmeastern
Jan 271:19 PM
Western Intensification
The eastern boundary of all gyres tend to be:
_____________________________________
_____________________________________
_____________________________________
_____________________________________
Currents run along _______________ coasts of land
Wide (1000 km)
Shallow (~0.5 km)
Slow (10's of km/day)
Cool
western
Jan 271:19 PM
Surface Currents
Jan 271:19 PM
Tropical Convergence
Centers of gyres tend to be around _____ degrees latitude
Convergence is caused by water piling up in the ___________of the gyre
Forms a __________ of water about _____ meters high in the center
30center
hill 2
Jan 271:19 PM
Effects of Currents on Climate
Currents move both _________ and __________ waterall around the Earth
Surface currents ____________ or ___________ the air
above it, influencing the ____________ of the land near
the ______________.
cold warm
cool warmclimate
coast
Jan 271:19 PM
Effects of Currents on Climate
Warm currents tend to add ________________ to the
winds as they blow across them.
Results in _________ temperatures and __________weather
moisture
mild rainy
Ocean Currents NOTES.notebook
3
February 10, 2016
Jan 271:19 PM
Effects of Currents on Climate
Cold currents tend to __________ the winds as they blow across them.
Brings _________ and __________ weather to theland
cool
cool dry
Jan 271:19 PM
Deep Water Currents
Over _____ km deep
Transport the very _________ waters at the ___________of the ocean
Caused by differences in ______________ rather than
______________ winds
2
cold bottom
density
surface
Jan 271:19 PM
Deep Water Currents
___________ water flows back toward the _______________
along the ocean floor’s hills and valleys
Affected by the ___________________ effect, which causes
them to _____________
Moves and __________ water around the __________
Cold equator
Corioliscurve
mixes world
Jan 271:19 PM
Deep Water Currents
Move ______________ than surface currents
Estimates indicate they may take as long as
_________ years to make the round trip from the
pole, to the equator, and back to the pole
slower
1000
Jan 271:19 PM Jan 271:19 PM
Ocean Currents NOTES.notebook
4
February 10, 2016
Jan 271:19 PM
Upwelling
The upward movement of __________ water from the ocean depths.
As winds blow away the warm _____________ water,
___________ water rises to replace it.
___________ water contains many ______________
(and therefore ____________). Upwelling allows them
to be brought to the ________________.
cold
surfacecold
Cold nutrientsfish
surface
Jan 271:19 PM
Upwelling Example
West coast of South America
Jan 271:19 PM
El Niño
Every _____ to ______ years
Forms around ______________________
A ________________ ocean event; however, disrupts
weather patterns around the entire world (especially the
________________areas)
2 7
Christmas time
Pacific
coastal
Jan 271:19 PM
Add to notes: El Nino results in a reversal of equatorial current -- resulting in disruption of normal weather patterns
Jan 271:19 PM
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