Global Oceans and Seas

Global Oceans and Seas PowerPoint PPT Presentation


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Ocean's Physical Structure. Figure 16.3. Coastal System Components

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Global Oceans and Seas

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1. Global Oceans and Seas  Chemical Composition of Seawater   Physical Structure of the Ocean  

2. Ocean’s Physical Structure

3. Coastal System Components   Inputs to the Coastal System   The Coastal Environment and Sea Level  

4. Littoral Zone

5. Coastal System Actions   Tides   Waves  

6. Tides

7. Wave Formation

8. Coastal Straightening

9. Longshore Current and Beach Drift

10. Coastal System Outputs   Erosional Coastal Processes and Landforms   Depositional Coastal Processes and Landforms   Biological Processes: Coral Formations  

11. Erosional Coastal Features

12. Depositional Coastal Features

13. Littoral Drift

14. Coral Reef Distribution

15. Coral Reef Formation and Forms

16. Wetlands, Salt Marshes, and Mangrove Swamps  Wetlands Salt marshes Mangrove swamps

17. Coastal Salt Marsh

18. Mangroves

19. Glacial and Periglacial Processes Repeated periods over time Most evidence wiped out The Ice Age Pleistocene Cryosphere

20. Pleistocene Glaciation

21. Glacial and Periglacial Processes Repeated periods over time Most evidence wiped out The Ice Age Pleistocene Cryosphere

22. Evolution of the Great Lakes

23. Paleolakes

24. Rivers of Ice   Alpine Glaciers   Continental Glacier  

25. Rivers of Ice

26. Formation of Glaciers Compaction and recrystallization of snow Glacier budget Zone of accumulation Zone of ablation Line of equilibrium Alpine Continental; Ice sheets

27. Alpine Glacier and Mass Balance

28. Glacial Movement Weight and gravity Plastic internal flow Basal sliding Advancing and Retreating Alpine Glacier

29. Glacial Movement

30. Glacial Polish

31. Alpine Glaciers High altitude, above snowline U-shaped valleys Cirques, arêtes, horns Hanging valleys Fjords California’s glaciers

32. Erosion and Deposition Plucking (detachment and entrainment) Glacial erratic Abrasion Striations, glacial polish Moraines Lateral, medial, terminal (end)

33. Alpine Erosional Features

34. Erosion and Deposition Plucking (detachment and entrainment) Glacial erratic Abrasion Striations, glacial polish Moraines Lateral, medial, terminal (end)

35. Alpine Glacier Depositional Features

36. Erosion and Deposition Plucking (detachment and entrainment) Glacial erratic Abrasion Striations, glacial polish Moraines Lateral, medial, terminal (end)

37. Continental Glacier Depositional Features

38. Continental Depositional Features

39. Roche Moutonnée

40. Continental Glaciers Past Ice Age, Pleistocene Epoch Wisconsin period Canadian Shield Current Antarctica, Greenland Nunataks Landforms: till, moraines, kettles, drumlins

42. Greenland

43. Greenland (southern end)

44. Periglacial Landscapes Geography of Permafrost   Ground Ice and Frozen Ground Phenomena   Humans and Periglacial Landscapes  

45. Periglacial Processes Permanently or semi-permanently frozen ground Permafrost Beyond extent of ice sheet expansion, and following retreat Glaciofluvial processes

46. Permafrost Distribution

47. Periglacial Environments

48. Ice Wedge and Pingo

49. Gelifluction Lobes

50. Permafrost Melting

51. Patterned Ground

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