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The Oceans

The Oceans. Take-Away Points. The ocean is salty because erosion brings dissolved elements to the sea The Coriolis Effect causes ocean currents to travel curving paths Surface currents in the ocean are driven by the winds Vertical movements in the ocean are due to density differences.

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The Oceans

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  1. The Oceans

  2. Take-Away Points • The ocean is salty because erosion brings dissolved elements to the sea • The Coriolis Effect causes ocean currents to travel curving paths • Surface currents in the ocean are driven by the winds • Vertical movements in the ocean are due to density differences

  3. Composition of Sea Water Element Weight %: 1%=10 gm/liter • Cl 1.9 • Na 1.05 • Mg 0.135 • S 0.0885 • Ca 0.040 • K 0.038 • Br 0.0065 • C 0.0028 • Sr 0.00081 • B 0..00096 • Si 0.00030 • F 0.00013 1. The ocean is salty because erosion brings dissolved elements to the sea

  4. The Coriolis Effect • Due to moving on a rotating earth • Things on equator are moving faster than points near poles • Affects: • Winds • Ocean Currents • Tides 2. The Coriolis Effect causes ocean currents to travel curving paths

  5. The Coriolis Effect • Things moving toward the equator are deflected west • Things moving poleward are deflected east • Movements are deflected to right in Northern Hemisphere • Movements are deflected to left in Southern Hemisphere 2. The Coriolis Effect causes ocean currents to travel curving paths

  6. Not a Manifestation of the Coriolis Effect! • Too small scale for the Coriolis Effect to be significant

  7. Ocean Currents 3. Surface currents in the ocean are driven by the winds

  8. Tracking Ocean Currents

  9. 2011 Tsunami Debris

  10. The Global Heat Conveyor 4. Vertical movements in the ocean are due to density differences

  11. Take-Away Points • The ocean is salty because erosion brings dissolved elements to the sea • The Coriolis Effect causes ocean currents to travel curving paths • Surface currents in the ocean are driven by the winds • Vertical movements in the ocean are due to density differences

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