1. 1 The Hydrologic Cycle Where is the water? The global cycle Groundwater –The myth of underground rivers

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3. 3 Water source Water volume, in cubic miles Percent of total water Oceans317,000,00097.24% Icecaps, Glaciers7,000,0002.14% Ground water2,000,0000.61% Fresh-water lakes30,0000.009% Inland seas25,0000.008% Soil moisture16,0000.005% Atmosphere3,1000.001% Rivers3000.0001% Total water volume326,000,000100% From USGS, similar to CS Table 17.2

4. 4 How much of water is usable by humans? CS Figure 17.6

5. 5 LH

6. 6 CS Fig. 17.3 WET! DRY!

7. 7 CS Fig. 17.2

8. 8 CS Fig. 17.8

9. 9 From USGS Porosity = spaces in rock Permeability = connectedness of spaces in rock Water table = level below which all spaces filled

10. 10 An aquifer is a porous, water-bearing layer of sand, gravel or rock CS Fig. 17.9 Permeable! Impermeable!

11. 11 The Rock Cycle Structure of the Earth Plate Tectonics Rocks and the Rock Cycle

12. 12 Fig. 14.2

13. 13 Fig. 14.3 Map of Tectonic Plates

14. 14 CS Fig. 14.5

15. 15 Fig. 14.4 Tectonic plate movement

16. 16 Subduction animation

17. 17 Types of Plate Boundaries  Divergent -Plates move away from each other  Convergent -Plates move towards each other  Transform -Plates slide past each other i.e. mid ocean ridges i.e. subduction zones

18. 18 CS Fig. 14.3 Dec. 26 Earthquake

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21. 21 Model of Tsunami inflow and outflow at Phuket, Thailand Choowong et al., 2008 Marine Geology

22. 22 Tsunami Links NY times http://whyfiles.org/2011/tsunami-the-killer-wave/ http://www.cnn.com/video/#/video/world/2011/03 /11/sot.tsunami.hit.japan.cnnhttp://www.cnn.com/video/#/video/world/2011/03 /11/sot.tsunami.hit.japan.cnn

23. 23 Surface of the Earth

24. 24 South American Trench

25. 25 Atlantic Ocean Basin

26. 26 CS Fig. 14.8 The Rock Cycle

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29. 29 Recent Lava Flow

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32. 32 The End. Back