1. Class 12: Tides, Waves, Tsunamis, Oceanography

2. Today’s topics: Tides Wave features Tsunamis Oceanography Class Updates Reading: 16.1-16.5 Homework #5 assigned today Final Exam: Mon. May 9th @ 4pm Class 12: Tides, Waves, Tsunamis, Oceanography

3. Ocean Tides - What Causes Them?

4. Ocean Tides From Gravity F ~ M / R 2 F = force M = mass R = radius

5. Tidal Pulls: Moon vs. Sun Which exerts a greater pull - Moon or Sun?

6. Daily Tides from the Moon

7. Monthly Tides: Moon Phases & Sun

8. Extreme Tides low tide high tide Bay of Fundy (Nova Scotia, Canada)

9. Which statement is most correct about spring tides? a. They occur in the spring. b. They occur when the sun, the moon and the Earth all fall on a straight line c. They are the largest high tides on Earth d. Both statements b and c are true.

10. a. Yes, and they would be much LARGER b. Yes, but they would be much SMALLER c. No, we would not have tides d. Maybe, it depends on the season If Earth didn’t have a moon, would we still have tides?

11. Sea Waves 1 2 3 4

12. Circular Motion of Water

13. Types of Waves

14. Sediment Transport Along Coastlines

15. Beaches

16. Rocky Coastlines cliffs plaforms

17. Sandy Coastlines Barrier Islands

18. Tsunamis Banda Aceh, Sumatra, Indonesia December 26, 2004 Magnitude 9.3

19. Tsunamis Underwater fault 1. BIG earthquake 2. Tsunami generated 3.

20. Tsunami Animation

21. Tsunami Example: Sumatra

22. 2011 Japan Tsunami

23. Review: Ocean in Motion

24. Oceanography

25. The Oceans

26. Ocean Water Composition

27. Salty Origin

28. Where do ions go?

29. Salt Balance

30. Salinity of Ocean Surface

31. Changes with depth

32. Top: Mixed Zone

33. Middle: Transition Zone

34. Bottom: Deep Zone

35. From North to South

36. Water is moving

37. Warm water cools in North Atlantic Cold water sinks: cold = densest The Water Pump

38. Atlantic Deep Water

39. Surface Currents

40. Adding complication

41. Currents and Winds

43. Coriolis Effect

44. El Nino-Step 1

45. El Nino-Step 2

46. El Nino-Step 3

47. Southern Oscillation El Nino and La Nina are the extreme hot and cold parts of the Southern Oscillation cycle